JP2011117711A - Dust collector and mixing/drying machine including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector capable of preventing powder dust captured by a filter from attaching to other members, worker's clothes and the like or scattering to the atmospheric air, even when the powder dust is brushed off. <P>SOLUTION: This mixing/drying machine 2 includes the dust collector 1 for capturing the powder dust included in a gas flowing to a pressure reduction pump 15. The dust collector 1 includes a pipe body 21 connecting the pressure reduction pump 16 and the inside 2a of the machine, and the inside of the pipe body 21 is partitioned into an upstream side and a downstream side by a partitioning plate 37. A filter unit 26 is detachably disposed on the partitioning plate 37, and the filter unit 26 is constituted to allow the gas at the upstream side to pass through the filter unit 26 and flows to the downstream side through the filter 32. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dust collector that captures dust contained in a fluid discharged from the inside of a mixing dryer to the outside of the device, and a mixing dryer having the dust collector.

  A mixing dryer that mixes and dries powder particles in the machine while adjusting the inside of the machine to a reduced pressure state with a vacuum pump is practically used. As the mixing dryer, for example, it is described in FIG. Some have an inverted conical container. This mixing dryer is provided with a screw blade to stir the powder particles in an inverted conical container. The screw blades are mechanically connected to a transmission device provided outside the container, and the inside of the container is rotated and revolved by the transmission device. There is an exhaust port at the top of the container. A dust removing device is attached to the exhaust port.

  The dust removing device has a plurality of bottomed cylindrical bag filters. This bag filter has a packing material applied to the opening end, and the portion where the packing material is applied is sandwiched between the gauge plate and the plate while being suspended from the gauge plate. It is attached to the gauge plate by fastening. The plurality of bag filters attached to the gauge plate in this manner are suspended in the dust removing device with their bottoms facing the exhaust ports, and the gas discharged from the inside of the machine to the outside of the machine passes through the plurality of bag filters. ing. The plurality of bag filters arranged in this manner captures dust contained in the gas at each outer peripheral surface and removes dust from the gas.

JP 2002-148857 A

  The bug filter described in Patent Document 1 is designed to be able to wipe off dust accumulated on it by blowing a pulse jet downstream. Since the filter is also clogged, the bag filter must be replaced periodically. When replacing the bag filter, the cover of the dust removing device is removed, and then the bolt for fastening the two plates is loosened, and then the bag filter is removed from the casing of the dust removing device.

  Although the bag filter can be pulled out in this way, the bag filter is designed to capture dust on the outer peripheral surface. Therefore, when the bag filter is pulled out, the outer peripheral surface of the bag filter touches other members or touches workers. In some cases, the captured dust may adhere to other members or the clothes of workers or may be scattered in the atmosphere. Further, if dust adheres to the clothes of the worker, the clothes of the worker become dirty, and if the dust that has been removed is scattered in the atmosphere, the worker may inhale.

  Therefore, the present invention has an object to provide a dust collector capable of preventing dust captured by a filter when the filter is replaced from adhering to other members, workers' clothes, etc., or being scattered in the atmosphere. It is said.

  Another object of the present invention is to provide a dust collector in which the filter can be easily replaced.

  The dust collector of the present invention is used in a mixing dryer, and is a dust collector for capturing dust contained in gas discharged from the inside of the machine to the outside of the machine, and is connected to the inside of the machine and the outside of the machine. A tubular body, and a filter that is detachably attached to the tubular body, and is disposed so as to separate the inner side and the outer side of the inside of the tubular body while being attached to the tubular body, and has a filter that captures the dust. A filter unit, and the filter unit has a bottomed cylindrical shape having an inflow opening that opens toward the inside of the machine, and gas that enters the filter unit from the inside of the machine through the inflow port It passes through from the inside to the outside and is discharged to the outside of the machine.

  According to the present invention, the gas that has entered the filter unit from the inside of the machine through the inflow port passes from the inside to the outside of the filter and is discharged to the outside of the machine. Then, the dust contained in the gas can be captured inside the filter, and the dust can be deposited inside the filter unit. Therefore, dust does not accumulate on the outside of the filter unit, and when removing the filter unit from the tube, even if the outer surface of the filter unit hits the tube or the clothes of the worker, It can be prevented from adhering to the clothes of the worker and the captured dust can be prevented from being scattered in the atmosphere. Therefore, it is possible to prevent the worker's clothes from becoming dusty and the worker from sucking dust scattered in the atmosphere. In the present invention, the bottomed cylindrical shape includes those whose bottom is located on the upper side, that is, those whose bottom constitutes a ceiling.

  In the above invention, the tubular body includes a main passage that connects the outside of the machine and the inside of the machine, and a desorption path that is connected to the main path and extends in a direction different from the main path, and the desorption path includes an insertion port. The filter unit can be inserted and removed from the insertion port, and the filter unit can be attached to and detached from the tube body by being inserted into and removed from the insertion port through the insertion port. preferable.

  According to the above configuration, the filter unit can be attached to and detached from the tube body by inserting and removing the filter unit from the insertion port of the attachment / detachment passage extending in a direction different from the main passage connected to the outside of the machine and the inside of the machine. Therefore, the filter unit can be detached while the main passage is connected to the outside and inside the machine, and the filter unit can be easily replaced.

  In the above invention, it is preferable that the filter unit has a lid, and the lid closes the insertion port when the filter unit is attached to the tube.

  According to the above configuration, when the filter unit is attached to the tube, the insertion port is closed. Therefore, the attachment of the filter unit and the closing of the insertion port can be performed at the same time, and the attachment of the filter unit and the closing of the insertion port are easy.

  In the above invention, it is preferable that the filter extends to the vicinity of the insertion port in the desorption passage.

  If the said structure is followed, since the filter is extended to the vicinity of an insertion opening, the area which a filter can capture | acquire dust can be enlarged, maintaining a compact shape. Thereby, a larger amount of dust can be captured and the life of the filter can be extended. Further, by increasing the area that can be captured, the flow path resistance for the gas flowing from the upstream side to the downstream side can be reduced, and the gas can be easily discharged out of the apparatus.

  In the above invention, the filter unit has a cylindrical holder that can be attached to and detached from the tube body by being inserted and removed from the insertion port, the filter has a cylindrical shape, and the filter has an opening at the opening. It is preferable that the inflow port is formed on one opening side of the holder by being accommodated in the holder toward the inside of the machine.

  According to the above configuration, the gas introduced into the filter through the inflow port flows out to the outside through the filter, and is further discharged out of the machine through the vent hole of the holder. Therefore, the dust contained in the gas is captured inside the filter, and the dust does not adhere to the holder outside the filter. Therefore, even if the filter is removed from the holder, the dust attached to the holder does not adhere to the worker, and the worker's clothes are not soiled when the filter is replaced.

  In the above invention, the filter has a filter flange capable of trapping dust at an opening end portion forming the inflow port, and the filter flange is sandwiched between the holder and the tubular body. It is preferable to fix.

  According to the above configuration, since the filter can be fixed simply by pressing the holder against the tube, the filter unit can be easily attached. In addition, since the filter flange can capture dust, it is possible to capture dust contained in the gas that escapes from between the tube body and the holder, and to prevent dust from falling downstream.

  In the above invention, the filter unit has a lid, and the lid is attached to the other opening of the holder, and closes the insertion port when the filter unit is attached to the tube. Preferably, the filter has an extended portion extending to the lid, and the attachment portion is sandwiched and fixed between the holder and the lid.

  According to the above configuration, the filter is fixed by attaching the lid to the holder, so that the filter can be easily fixed. Further, when the filter unit is attached to the tube body, the insertion port is closed. Therefore, the attachment of the filter unit and the closing of the insertion port can be performed at the same time, and the attachment of the filter unit and the closing of the insertion port are easy.

  In the above invention, the filter unit is preferably arranged in a state of projecting from the desorption passage to the main passage.

  According to the above configuration, the desorption passage can be shortened while sufficiently securing the filter area, and both improvement in dust collection performance and downsizing of the apparatus can be achieved.

  The mixing dryer according to the present invention includes any one of the dust collecting devices described above.

According to the above configuration, it is possible to realize a mixing dryer having the above-described effects.In the above invention, the tubular body is disposed so that the inner side of the machine is on the lower side, and the filter unit is It is preferable that the inlet is arranged so as to open downward toward the inside of the machine.

  According to the above configuration, when the dust accumulated inside the filter falls downward due to gravity or the like, the fallen dust can be returned to the machine. Thereby, the powder deposited on the inside of the filter can be used again.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the dust capture | acquired with the filter at the time of filter replacement adheres to another member, a worker's clothes, etc., or is scattered in air | atmosphere.

  In the present invention, the filter can be easily replaced.

It is a front view which shows an example of a mixing dryer provided with the dust collector of 1st Embodiment of this invention. It is an expanded sectional view which expands and shows the cross section of the dust collector shown in FIG. It is an enlarged view which shows the filter unit with which the dust collector of FIG. 2 is equipped. It is an expanded sectional view which expands and shows the section of the dust collector of a 2nd embodiment. It is an expanded sectional view which expands and shows the section of the dust collector of a 3rd embodiment. It is a perspective view which expands and shows the filter used with the dust collector of 4th Embodiment. It is an expanded sectional view showing a part of section of a dust collector of a 4th embodiment. It is an expanded sectional view showing the section of the dust collecting device of a 5th embodiment. It is a disassembled perspective view which shows the filter unit used with the dust collector of FIG. It is an expanded sectional view which shows the area | region X of the dust collector shown in FIG. It is an expanded sectional view which shows the area | region Y of the dust collector shown in FIG. It is an expanded sectional view showing the section of the dust collector of a 6th embodiment.

  Hereinafter, the dust collectors 1, 1 </ b> A, 1 </ b> B of the first to third embodiments of the present invention and the mixing dryer 2 having the same will be described with reference to FIGS. 1 to 5. In addition, the concept of the direction used when demonstrating below is an example, and is not necessarily limited to the concept of the direction shown below.

  The mixing dryer 2 is an apparatus for reacting, crystallizing, filtering, drying, mixing and the like of the slurry. The mixing dryer 2 is, for example, a PV mixer manufactured by Shinko Environmental Solution Co., and includes a container 3 as shown in FIG. The container 3 has an inverted conical cylindrical container body 4 that is reduced in diameter as it travels downward. An upper lid 5 is detachably provided at the upper end of the container body 4, and the upper opening 4 a of the container body 4 is closed by the upper lid 5. An open / close valve 6 is provided in the product discharge port 4 b which is the lower opening of the container body 4. The open / close valve 6 can open and close the product discharge port 4b. By opening the product discharge port 4b by the open / close valve 6, the product granular material can be discharged from the product discharge port 4b. Slurry can be stored in the container body 4 by closing the discharge port 4b. A jacket 7 is provided on the outer peripheral surface of the container body 4 to heat or cool the slurry or the like stored in the container body 4. The jacket 7 is provided on the outer peripheral surface of the container body 4 so as to cover the whole. The jacket 7 has an outlet 7a and an inlet 7b, and a heating or cooling medium is introduced from the inlet 7b and the medium is discharged from the outlet 7a.

  A stirring means 8 is provided in the container main body 4, and the stirring means 8 has a rotation shaft 9 disposed along the central axis L <b> 1 of the container 3. A plurality of paddle blades 10 and a plurality of auxiliary blades 11 are integrally provided at an intermediate portion of the rotating shaft 9, and a spiral ribbon blade 12 is provided at a lower end portion thereof. A driving device 13 is connected to the upper end of the rotating shaft 9. The drive device 13 is a so-called electric motor with a reduction gear, and is provided on the upper surface of the upper lid 5. The drive device 13 has an output shaft 13 a, and the output shaft 13 a passes through the upper lid 5 and is connected to the rotary shaft 9. The drive device 13 can rotate the output shaft 13a, and can rotate the rotation shaft 9 around the central axis L1 by rotating the output shaft 13a. Thus, the openable / closable manhole 14 is formed in the upper lid 5 provided with the driving device 13, and the raw material can be introduced into the container main body 4 from the manhole 14 or a separately provided inlet. .

  The upper lid 5 provided with the drive device 13 is formed with a manhole 14 that can be opened and closed. From the manhole 14, the inside of the container body 4, that is, the inside of the mixing / drying machine 2 (hereinafter simply referred to as “inside 2 a”). The slurry can be charged into Further, an exhaust port 15 is formed in the upper lid 5, and the exhaust port 15 discharges gas in the in-machine 2 a such as gas evaporated in the in-machine 2 a. A decompression pump 16 is connected to the exhaust port 15. The decompression pump 16 can adjust the inside of the container body 4 to a decompressed state by sucking the gas in the machine 2a. The dust collector 1 is provided at the exhaust port 15 to which the decompression pump 16 is connected, and the dust collector 1 is interposed between the decompression pump 16 and the exhaust port 15.

  The reduced pressure state indicates a state lower than the atmospheric pressure, and does not specifically limit the pressure in the container body 4. The reduced pressure state varies depending on the object to be processed and the mixing / drying process. It is good. The reduced pressure state includes a vacuum and a state close thereto. Moreover, in the mixing dryer 2 of FIG. 1, although what has put the inside 2a into a pressure reduction state using the pressure reduction pump 16 is described, the pressure reduction pump 16 is not necessarily required. For example, when the interior 2a is simply heated and dried under atmospheric pressure, the decompression pump 16 is not used. The dust collector 1 to be described later can be applied to the case where the decompression pump 16 is not provided and the interior 2a is not brought into a decompressed state by the decompression pump 16.

<First Embodiment>
The dust collector 1 captures dust contained in the gas discharged from the machine 2a to the outside of the machine, that is, the gas flowing from the machine 2a to the decompression pump 16, and as shown in FIG. have. The tubular body 21 is Y-shaped when viewed from the front, and includes a main pipe 22 extending in the vertical direction and a sub pipe 23 extending obliquely upward. The main pipe 22 has a cylindrical shape, and annular flanges 22 a and 22 b are formed at both upper and lower ends of the main pipe 22. A flange 22a at the lower end of the main pipe 22 is fastened to the exhaust port 15 by a bolt (not shown) (see FIG. 1), and a flange 22b at the upper end is fastened by a bolt (not shown) to a pipe 17 connected to the decompression pump 16 described later. Yes.

  The main pipe 22 fastened in this way has a main passage 24 therein. The main passage 24 extends in the vertical direction along the axis L2 of the main pipe 22, the inlet 24a on the lower side thereof is connected to the cabin 2a via the exhaust port 15, and the outlet 24b on the upper side thereof. It is connected to the decompression pump 16 via the pipe 17.

  A base end portion of a cylindrical sub-tube 23 is integrally provided on the outer peripheral surface of the main tube 22 having such a main passage 24. The secondary pipe 23 extends obliquely upward so that its axis L3 forms an angle α (for example, α = 45 degrees) with respect to the axis L2 of the main pipe 22, and branches from the main pipe 22 together with the main pipe 22. A character-shaped tube body 21 is formed. In such a sub pipe 23, there is a desorption passage 25, and this desorption passage 25 extends obliquely upward along the axis L 3 of the sub pipe 23, and its lower side is connected to the main passage 24. Therefore, the attachment / detachment passage 25 branches from the main passage 24 in a direction that forms an angle α, and forms a Y-shaped passage together with the main passage 24. The desorption passage 25 is open on the upper side and has an insertion port 25a that opens upward. The insertion port 25a can insert the filter unit 26, and the filter unit 26 can be inserted into and removed from the attachment / detachment passage 25 through the insertion port 25a.

  The filter unit 26 has a holder 27 as shown in FIG. The holder 27 has first and second holder portions 28 and 29. The first and second holder portions 28 and 29 have a cylindrical shape, and their axis lines L4 substantially coincide with each other. The first and second holder portions 28 and 29 are arranged at intervals in the direction along the axis L 4 and are connected by a plurality of rods 30. The plurality of rods 30 extend in parallel to the axis L4 and are fixed to the upper and lower surfaces of the first and second holder portions 28 and 29, respectively.

  The plurality of rods 30 fixed in this way are arranged at equal intervals in the circumferential direction of the first and second holder portions 28 and 29. Therefore, the space between the rods 30 is open, and a ventilation port 31 is formed between the rods 30. A filter 32 is provided on the outer peripheral surface of the holder 27 so as to cover the plurality of ventilation openings 31. The filter 32 is made of, for example, a filter cloth or a non-woven fabric, and can capture dust while having air permeability. The filter 32 has flexibility, is wound around the outer peripheral surface of the holder 27 over the entire circumferential direction, and the lower end portion and the upper end portion thereof are the first and second holder portions 28 by the hose bands 33 and 34. , 29. The filter 32 is attached to the holder 27 by being wound and tied in this way. Therefore, the filter 32 is cylindrical and is held by the holder 27. In addition, on the outer peripheral surfaces of the first and second holder portions 28 and 29, concave grooves 28a and 29a are formed over the entire circumferential direction, and hose bands 33 and 34 are disposed in the concave grooves 28a and 29a. is doing. By doing so, the hose bands 33 and 34 are prevented from sliding off from the first and second holder portions 28 and 29 and the filter 32 being detached.

  A blind ferrule 35 is provided at the base end (upper end portion in FIG. 3) of the holder 27 thus configured, that is, at the upper end of the second holder portion 29. The blind ferrule 35 that is a lid has a disc shape and closes the upper opening of the second holder portion 29. Thereby, the filter unit 26 has a bottomed cylindrical shape. In this way, by closing the upper opening of the second holder part 29, the filter unit 26 in the holder 27 allows gas entering from the lower opening 28 b of the first holder part 28 to exit from the plurality of ventilation openings 31. To go. A handle 36 for an operator to hold the filter unit 26 is attached to the upper surface of the blind ferrule 35.

  As shown in FIG. 2, the filter unit 26 configured as described above is inserted into the insertion port 25 a from the distal end portion 26 a (first holder portion 28 side), and the distal end portion 26 a is provided in the main pipe 22. 37. The partition plate 37 is an annular plate material, and is disposed so as to be substantially orthogonal to the axis L3 of the sub pipe 23. The outer peripheral surface of the partition plate 37 is fixed to the inner peripheral surface of the main pipe 22, and the main passage 24 is divided into two regions 24 c on the cabin 2 a side (ie, upstream side) and the decompression pump 16 side (ie, downstream side). , 24d. The partition plate 37 arranged in this way has a tapered portion 37a at the inner edge thereof, and the tip end portion 26a of the filter unit 26 is guided to the inner hole of the partition plate 37 by the tapered portion 37a. The tip end portion 26a is fitted into the hole. The filter unit 26 fitted in the inner hole of the partition plate 37 in this way opens in the first holder portion 28 toward the lower side (specifically, obliquely downward) on the upstream side, It has the inflow port 26b (opening 28b) opened to the area | region of an upstream side.

  Further, an O-ring 38 is provided on the outer peripheral surface of the front end portion 26 a of the filter unit 26, that is, the outer peripheral surface of the first holder portion 28 (see also FIG. 3). The space between the plate 37 is sealed. By sealing between these, the gas flowing from the upstream side to the downstream side flows through the filter unit 26 to the downstream side, and the filter 32 is provided between the upstream region and the downstream region. Comes to intervene. Therefore, all the gas flowing from the upstream side to the downstream side passes through the filter 32 from the inner peripheral surface (inner side) to the outer peripheral surface (outer side), and the filter 32 can capture dust contained in the gas. become able to. In addition, about this seal, it is not limited to the seal by an O-ring, Other general seals and seal structures can be applied.

  Further, the secondary pipe 23 has a ferrule 23a at the upper end thereof. The ferrule 23a abuts against the outer edge of the blind ferrule 35 with the filter unit 26 held by the partition plate 37, and the outer edge of the abutting blind ferrule 35 and the ferrule 23a are sandwiched by an annular clamp member 39. ing. A gasket 40 is provided at the outer edge portion of the blind ferrule 35, and the gap between the outer edge portion of the blind ferrule 35 and the ferrule 23 a is sealed by the gasket 40 by being clamped by the clamp member 39. Thereby, the insertion port 25a is closed. An annular convex portion 35a is formed on the lower surface of the outer edge portion of the blind ferrule 35, and an annular concave groove 23b corresponding to the convex portion 35a is formed in the ferrule 23a. When the filter unit 26 is held by the partition plate 37 in a predetermined reference posture, the convex portion 35a is fitted into the concave groove 23b and constitutes a positioning means together with the concave groove 23b. The convex portion 35a and the concave groove 23b are not essential components.

  Thus, in the mixing dryer 2 provided with the dust collector 1, when the slurry is filtered, dried and mixed, the in-machine 2 a is adjusted to a reduced pressure state by the decompression pump 16, and the in-machine 2 a is When the pressure is reduced, the gas in the machine 2a flows out from the machine 2a to the dust collector 1 through the exhaust port 15 in a state containing dust. Further, moisture that evaporates during drying flows out to the dust collector 1 accompanied by dust. Further, when dust is rolled up by a stirring blade or the like in the machine 2 a, the gas containing the dust flows out from the machine 2 a to the dust collector 1 through the exhaust port 15.

  Thus, the gas flowing out from the exhaust port 15 enters the dust collector 1 through the inlet 24 a of the main passage 24, passes through the inlet 26 b of the filter unit 26, and flows into the filter unit 26. The gas flowing into the filter unit 26 passes through the plurality of ventilation ports 31, flows to the downstream region 24 d through the filter 32, then exits from the outlet 24 b of the main passage 24, passes through the piping 17, and the decompression pump 16. It flows toward. Thus, the gas flowing from the interior 2a toward the decompression pump 16 flows out from the inside of the cylindrical filter 32 to the outside, and the dust contained therein is captured inside the filter 32. Therefore, dust is removed from the gas flowing toward the decompression pump 16 by the filter 32, and clean gas not containing dust flows into the configuration downstream of the dust collector 1, such as the pipe 17 and the decompression pump 16, The structure can be prevented from being contaminated by dust.

  Thus, in the filter unit 26 that captures dust, the plurality of rods 30 extend to the vicinity of the insertion port 25a, and the plurality of ventilation ports 31 formed between the rods 30 extend to the vicinity of the insertion port 25a. By extending the ventilation port 31 to the insertion port 25a in this way, the area where dust can be captured by the filter 32 can be increased for a compact shape. As a result, a larger amount of dust can be captured, and the life of the filter 32 can be extended. Further, by increasing the area that can be captured, the flow resistance against the gas flowing from the upstream side to the downstream side can be reduced, and the gas can easily flow to the decompression pump 16. Further, the filter unit 26 protrudes from the attachment / detachment passage 25 to the main passage 24 with the tip 26a fitted into the partition plate 37, so that the filter unit 26 can be attached / detached while ensuring a sufficient area of the filter 32. The passage 25 can be shortened. Thereby, the improvement of dust collection performance and the miniaturization of an apparatus can be made compatible.

  As described above, the dust collector 1 captures the dust contained in the gas by the filter unit 26. However, the dust collector 1 may be provided with a pulse generator 41 to remove the captured dust. The pulse generator 41 can generate a pulsed pressure wave (for example, an inert gas such as nitrogen or air is blown onto the filter in a pulsed manner), and is provided on the outer peripheral portion of the sub-tube 23. A pulsed pressure wave can be blown into the sub pipe 23 through the communication hole 23d.

  The pulse generator 41 configured as described above operates in accordance with the differential pressure between the downstream side and the upstream side of the dust collector 1, and the outer peripheral surface of the main pipe 22 is used to measure the differential pressure. Are formed with two differential pressure gauge ports 42a and 42b. One of these two differential pressure gauge ports 42 a and 42 b is provided in the upstream region 24 c of the main passage 24, and the other is provided in the downstream region 24 d in the tube body 21. A differential pressure measuring device 42 is provided in the two differential pressure gauge ports 42a and 42b formed in this way. The differential pressure measuring device 42 measures the pressure difference between the two differential pressure gauge ports 42a and 42b, and operates the pulse generating device 41 when the pressure difference exceeds a predetermined value.

  The differential pressure measuring device 42 configured as described above causes the filter 32 to capture dust, and when the pressure difference between the two differential pressure gauge ports 42a and 42b exceeds a predetermined value, the pulse generator 41 is turned on. Make it work. The pulse generator 41 blows a pulsed pressure wave into the auxiliary pipe 23 through the communication hole 23d. The injected pulsed pressure wave propagates through the filter 32 from the outside to the inside and exits to the upstream region 24c. As the pulsed pressure wave propagates through the filter 32 from the outside to the inside, the dust accumulated inside the filter 32 is wiped off into the filter unit 26. Since the filter unit 26 opens downward, the dust that has been wiped off falls to the upstream side by gravity, and returns to the interior 2 a through the exhaust port 15. Thereby, the waste of the manufactured granular material can be reduced.

  In this embodiment, the pulse generator 41 is operated according to the pressure difference measured by the differential pressure measuring device 42. However, the present invention is not limited to this, and the pulse generator 41 is set at a constant interval regardless of the pressure difference (differential pressure). You may make it operate.

  In the mixer / dryer 2 configured as described above, when the filter 32 is broken, or when a pressure difference is increased due to dust accumulation or clogging, the captured dust can be removed. Even in such a case, if it is wiped out many times, the filter 32 will also become clogged and the filter 32 will have to be replaced. Therefore, the filter unit 26 can be attached to and detached from the tube body 21. Below, the removal | desorption method is demonstrated.

  In the filter unit 26 attached to the tube body 21, the clamp member 39 is first removed, the handle 36 is grasped, and the filter unit 26 is pulled out from the attachment / detachment passage 25. As it is pulled out, first, the tip end portion 26 a of the filter unit 26 is removed from the inner hole of the partition plate 37. Then, since there is no thing holding the front end portion 26a of the filter unit 26, the filter 32 of the filter unit 26 may come into contact with the inner peripheral surface of the sub-pipe 23 or may come into contact with the clothes of the worker when pulling out. .

  In this way, when the filter 32 hits the inner peripheral surface of the sub-pipe 23 or hits the worker's clothes, the dust adheres to the inner peripheral surface of the sub-pipe 23 or the worker's clothes. It was. However, the filter unit 26 captures dust inside the cylindrical filter 32, and deposits dust inside the filter unit 26. Therefore, dust does not accumulate on the outside of the filter unit 26, and even if the outer surface of the filter unit 26 hits the inner peripheral surface of the sub pipe 23 or the clothes of the worker, It will not adhere to the surface or clothes of workers. Therefore, it can suppress that a worker's clothes become dusty.

  When the filter unit 26 is further pulled out after the distal end portion 26 a is removed from the inner hole of the partition plate 37, the filter unit 26 eventually reaches the insertion port 25 a of the desorption passage 25 and is extracted from the desorption passage 25. After extraction, the used filter unit 26 is put in a collection bag. Thus, the worker can remove the filter unit 26 without touching the dust, and the worker's clothes are not soiled or dust is not scattered in the atmosphere at the time of removal.

  Next, the operator inserts a new filter unit 26 prepared separately into the insertion port 25a from the distal end portion 26a, passes through the attachment / detachment passage 25, and inserts the distal end portion 26a to the partition plate 37. At this time, since there is nothing to support the distal end portion 26a of the filter unit 26, the filter unit 26 may hit the inner peripheral surface of the sub pipe 23, but dust does not adhere to the inner peripheral surface of the sub pipe 23 when it is pulled out. Therefore, dust does not adhere to the outside of the filter 32 even if it hits. Therefore, the filter unit 26 can be mounted while the outside of the filter 32 is clean.

  After inserting the distal end portion 26 a of the filter unit 26 up to the partition plate 37, the worker inserts the distal end portion 26 a of the filter unit 26 into the inner hole of the partition plate 37. At this time, the filter unit 26 is inserted while adjusting the posture of the filter unit 26 so that the front end portion 26 a contacts the tapered portion 37 a of the partition plate 37. Thereby, the front-end | tip part 26a is guided to the inner hole of the partition plate 37 by the taper part 37a. That is, the tip end 26 a can be inserted into the inner hole of the partition plate 37 by simply inserting the filter unit 26 against the tapered portion 37 a. As the filter unit 26 is further inserted, the blind ferrule 35 eventually hits the ferrule 23a. Thereafter, the posture of the filter unit 26 is finely adjusted to fit the convex portion 35a of the blind ferrule 35 into the concave groove 23b of the ferrule 23a, and then the blind ferrule 35 and the ferrule 23a are clamped by the clamp member 39. Thereby, the gap between the blind ferrule 35 and the ferrule 23a is sealed by the gasket 40, and the insertion port 25a is closed. By closing the insertion opening 25a, the inside of the dust collector 1 is sealed, and the mounting of the filter unit 26 is completed.

  Thus, in the dust collector 1, the filter unit 26 can be attached to and detached from the partition plate 37 by inserting and removing the filter unit 26 into and from the attachment / detachment passage 25. Therefore, it is not necessary to remove the exhaust port 15 and the pipe 17 that are fastened to the main pipe 22, and the filter unit 26 can be detached while the main passage 24 is connected to the decompression pump 16 and the interior 2a. Is easy. Further, when the filter unit 26 is attached to the partition plate 37, the insertion port 25a of the desorption passage 25 is closed. Therefore, the attachment of the filter unit 26 and the closing of the insertion port 25a can be performed simultaneously, and the attachment of the filter unit 26 and the closing of the insertion port 25a are easy.

Second Embodiment
The dust collector 1A of the second embodiment is similar in configuration to the dust collector 1 of the first embodiment. Therefore, below, about the structure of 1 A of dust collectors of 2nd Embodiment, about the same structure as the dust collector 1 of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted and only about a different structure. explain. The same applies to a dust collector 1B of a third embodiment to be described later.

  The dust collector 1 </ b> A has a tube body 21 as shown in FIG. 4. The tube body 21 is Y-shaped when viewed from the front, and a main passage 24A and a desorption passage 25A are formed therein. The main passage 24A extends upward and bends obliquely upward to the right in the middle to form a dogleg shape. The desorption passage 25A is connected to a bent portion of the main passage 24A and extends upward. An inlet 24a on the lower side of the main passage 24A is connected to the interior 2a via the exhaust port 15, and an outlet 24b on the oblique upper side is connected to the decompression pump 16 via the pipe 17. In addition, the desorption passage 25A is configured such that the filter unit 26 can be inserted from the insertion port 25b located above.

  In the pipe body 21 configured as described above, a partition plate 37A is provided between the inlet 24a of the main passage 24A and the bent portion. The partition plate 37 </ b> A is formed in an annular shape, and is disposed so as to be substantially orthogonal to the axis L <b> 2 of the main pipe 22. The outer peripheral surface of the partition plate 37A is fixed to the inner peripheral surface of the main pipe 22, and partitions the main passage 24 into two regions 24c and 24d on the upstream side and the downstream side. The front end portion 26a of the filter unit 26 inserted from the insertion port 25b is fitted into the inner hole of the partition plate 37A arranged in this way, and the filter unit 26 is fitted into the partition plate 37A by being fitted. Retained. Further, the main pipe 22 has a ferrule 22e at the upper end, the blind ferrule 35 of the filter unit 26 is brought into contact with the ferrule 22e, and the two ferrules 22e and 35 are clamped by the clamp member 39, A filter unit 26 is fixed to the main pipe 22.

  The dust collector 1A configured as described above has the same operational effects as the dust collector 1 of the first embodiment, but the filter is different from the dust collector 1 in the direction in which the main passage 24A and the desorption passage 25A extend. The direction in which the unit 26 is pulled out is different. Therefore, any dust collector 1, 1A can be selected according to the space above or to the left and right of the dust collector 1, 1A.

<Third Embodiment>
The dust collector 1B of the third embodiment is similar in configuration to the dust collector 1A of the second embodiment. Therefore, in the following, with regard to the configuration of the dust collector 1B of the third embodiment, the same components as those of the dust collector 1A of the second embodiment will be denoted by the same reference numerals and description thereof will be omitted, and only different configurations will be described. explain.

  The dust collector 1B has a tubular body 21B as shown in FIG. The pipe body 21B has a main pipe 22 extending upward and a sub pipe 23B extending radially outward from the main pipe, and has a T-shape when viewed from the front. A main passage 24B and a desorption passage 25A are formed in the tube body 21B. The main passage 24B extends upward and bends to the right at a right angle in the middle. The desorption passage 25A is connected to a bent portion of the main passage 24A and extends upward. The filter unit 26 is attached to the attachment / detachment passage 25A formed in this way.

  The dust collector 1B having such a main passage 24B has the same effect as the dust collector 1 of the first embodiment, and the dust collector 1A according to the arrangement of the pipe 17 connected to the outlet 24b of the main passage 24. , 1B can be selected.

  In the dust collectors 1, 1 </ b> A to 1 </ b> B of the first to third embodiments configured as described above, the filter 32 is installed on the outer surface side of the holder 27. However, the filter 32 may be attached to the inner surface side of the holder 27. As a method of attaching the filter 32 to the inner surface side of the holder 27, for example, after the filter 32 is fitted inside the holder 27, a band having elasticity in the direction of expanding from the inner side toward the outer side is attached to the inner periphery of the filter 32. The filter 32 may be fixed by being provided on the surface.

  It is possible to attach the filter 32 to the inner surface side of the holder 27 other than the method described above, and in the following, other embodiments in which the filter 32 is attached to the inner surface side of the holder 27 (the fourth to sixth embodiments). The dust collectors 1C to 1E) will be described. Note that the dust collectors 1C to 1D of the fourth and fifth embodiments are similar in configuration to the dust collector 1 of the first embodiment, and the dust collector 1E of the sixth embodiment is the fifth embodiment. The configuration is similar to the dust collector 1C. Therefore, the configurations of the dust collectors 1C to 1E of the fourth to sixth embodiments described below will be described only with respect to the configurations different from the configurations of the previous embodiments, and the same configurations will be denoted with the same reference numerals. Therefore, the description is omitted.

<Fourth embodiment>
The dust collector 1C of the fourth embodiment has a filter 32C. As shown in FIG. 6, the filter 32 </ b> C has a substantially cylindrical shape and is closed at the upper end (that is, has a bottomed cylindrical shape). A plurality of hook portions 51 are provided on the upper end side of the outer peripheral portion of the filter 32C. The plurality of hooks 51 are formed in a semi-cylindrical shape, and are attached with their openings directed toward the outer periphery of the filter 32A. In the present embodiment, four hook portions 51 are provided on the outer peripheral portion of the filter 32C, and each is disposed at equal intervals in the circumferential direction.

  On the other hand, as shown in FIG. 7, the same number of hook members 52 as the hook portions 51 are provided on the upper end side of the inner peripheral portion of the holder 27. The hook members 52 are L-shaped members that are bent upward, that is, hook-shaped members, and are arranged at equal intervals in the circumferential direction so as to correspond to the hook portions 51. The filter 32C can be mounted in the holder 27 by passing the hook member 52 through the hook portion 51 and hooking it. The opening on the lower end side of the filter 32 </ b> C attached in this manner is folded outward and fixed by the hose band 33 outside the holder 27.

  Note that the lower end side of the filter 32C may not be configured to be folded outward. For example, a hook part 51 and a hook member 52 are provided on the lower end side of the filter 32C and the holder 27 in the same manner as the upper end side thereof so that the lower end side of the filter 32C does not move along the inner peripheral surface of the holder 27. It may be configured to.

<Fifth Embodiment>
A dust collector 1D of the fifth embodiment includes a tube body 21 and a filter unit 26D as shown in FIG. As shown in FIG. 9, the filter unit 26 includes three members, ie, a holder 27D, a filter 32D, and a branding rule 35D. The holder 27D has cylindrical first and second holder portions 28D and 29D. As shown in FIG. 9, the first and second holder portions 28 </ b> D and 29 </ b> D are located away from each other along the axis L <b> 4 and are connected by a plurality of rods 30. The plurality of rods 30 are column members extending in parallel with the axis L4, and are provided at equal intervals in the circumferential direction on the inner peripheral portion of the first holder portion 28D and the outer peripheral portion of the second holder portion 29D. ing. Thus, a ventilation opening 31 is formed between two adjacent rods 30, and a filter 32 </ b> D is accommodated in the holder 27 </ b> D so as to close the ventilation opening 31.

  The filter 32D is made of a material that can capture dust while having air permeability, such as a filter cloth or a non-woven fabric. The filter 32D is generally formed in a bottomed cylindrical shape, and has a filter flange 61 at the opening end thereof. As shown in FIG. 11, the filter flange 61 is a flange protruding outward, and extends over the entire circumference in the circumferential direction at the opening end. The filter flange 61 is formed by, for example, folding back the opening end of the cloth member constituting the filter 32D, and inserting an annular felt or rubber having a rectangular cross section inside the folded portion, and the tip of the folded portion. It is configured by sewing on the outer peripheral surface of the remaining portion. Note that the filter flange 61 is not limited to the above example in which the opening of the cloth member constituting the filter 32 is folded back. For example, an annular filter flange portion may be formed by covering an annular felt or the like with another cloth member different from the filter 32, and the filter flange portion may be sewn to the main body of the filter 32 to constitute the filter 32. Good.

  The filter 32D configured in this way is accommodated in the holder 27D with the opening thereof facing downward. Therefore, the filter flange 61 is arranged on the lower end side of the holder 27D (that is, the lower end side of the rod 30). Further, a flange pressing portion 62 corresponding to the filter flange 61 is provided at the lower end of the rod 30. The first holder portion 28D serves as a reinforcing member for connecting the rod 30 and the flange pressing portion 62, and the flange pressing portion 62 is also fixed to the lower end portion of the first holder portion 28D. Yes.

  In the present embodiment, the second holder portion 29 </ b> D is provided inside the rod 30, but may be provided outside the rod 30. Moreover, it is good also as a structure which provides two large and small 2nd holder parts, and pinches | interposes the rod 30 from the inner side and the outer side by these. Similarly, the first holder portion 28 </ b> D is provided outside the rod 30, but may be provided inside the rod 30. Moreover, it is good also as a structure which provides two large and small 1st holder parts, and clamps the rod 30 from the inner side and the outer side by these.

  The flange pressing portion 62 extends over the entire circumference in the outer circumferential surface at the lower end of the first holder portion 28D. The flange pressing portion 62 has a substantially L-shaped cross section, and the front end portion of the flange pressing portion 62 is bent downward in parallel to the axis L4. The filter flange 61 is formed so that the upper end portion thereof is accommodated in the flange pressing portion 62, and the filter 32 </ b> D is positioned by applying the upper surface of the filter flange 61 to the flange pressing portion 62.

  As shown in FIG. 10, the filter 32D has an outer peripheral portion 32a that extends further upward than the ceiling portion 32b, and forms an extended portion 32c. The extension portion 32c has a cylindrical shape, extends along the inner peripheral portion of the second holder portion 29D, and is folded back radially outward at the upper end of the second holder portion 29D. The folded portion is put on the outer peripheral portion of the second holder portion 29D, and the second holder portion 29D is a hose band attaching portion that is squeezed radially inward where the folded portion is put. 29b. The hose band attaching part 29b extends over the entire circumference in the circumferential direction, and the hose band 34 is wound around and tied to the hose band 34 from the outside so that the extension part 32c of the filter 32D is fixed so as not to move.

  The rule 35D is detachably attached to the blind at the base end portion of the holder 27D configured as described above, that is, the upper end portion of the second holder portion 29D. As shown in FIG. 10, the blind toe rule 35D, which is a lid, has a lid portion 35b and a mounting portion 35c. The lid portion 35b has a disk shape, and a handle 36 is attached to the upper surface of the lid portion 35b so that a worker can hold it. A mounting portion 35c is integrally provided on the lower surface of the lid portion 35b. The mounting portion 35c is formed in a cylindrical shape and is detachably fitted into the second holder portion 29, and the opening 29c on the upper side of the second holder portion 29D is blocked by the lid portion 35b by being fitted. The filter unit 26D has a bottomed cylindrical shape.

  Further, an extension part 32c extending along the inner peripheral part of the second holder part 29 is interposed between the attachment part 35c and the second holder part 29, and the extension part 32c is connected to the attachment part 35c. It is clamped by the second holder part 29. If the extension portion 32 c is firmly fixed by the mounting portion 35 c and the second holder portion 29, the extension portion 32 c does not necessarily have to be folded back to be fixed by the hose band 34. Moreover, the extension part 32c is cylindrical (it is not necessary to extend over the circumferential direction perimeter.

  An engaging recess 35d is formed on the outer peripheral portion of the mounting portion 35c. 35 d of engagement recessed parts are extended over the perimeter of the circumferential direction in the outer peripheral part of the mounting part 35c, and the hose band attaching part 29b restrict | squeezed inside enters there and is engaged. Thus, by engaging the hose band attaching portion 29b with the engaging recess 35d, it is possible to suppress the rule 35D from being detached from the holder 27D to the blind. Moreover, since the extension part 32c is clamped between the mounting part 35c and the 2nd holder part 29, it can suppress that filter 32D remove | deviates. Thus, the filter 32D can be fixed to the partition plate 37 simply by mounting the rule 35D to the holder 27D to the blind, so that the filter 32D can be easily mounted.

  The filter unit 26D configured as described above is inserted through the insertion port 25a as shown in FIG. 8, and is pushed into the blind until the lid portion 35b of the rule 35D hits the ferrule 23a. Further, the outer edge portion of the blind ferrule 35 and the ferrule 23 a are sandwiched by an annular clamp member 39 so that the filter unit 26 </ b> D is not detached from the sub-tube 23. On the other hand, the filter flange 61 at the front end portion 26a of the filter unit 26D is disposed so as to surround the inner hole of the partition plate 37, and is sandwiched and fixed by the partition plate 37 and the flange pressing portion 62 (see FIG. 11). ). The fixed opening of the filter flange 61 forms an inflow port 26 b, and this inflow port 26 b faces the interior 2 a side through the inner hole of the partition plate 37.

  A cylindrical ring member 63 is provided on the inner peripheral portion of the partition plate 37. The ring member 63 is fixed to the partition plate 37 so that the axis thereof substantially coincides with the axis L3 and protrudes into the downstream region 24d, and the filter flange 61 has the ring member 63 inserted therein. In this state, it is fixed to the partition plate 37. Thus, even when a pressure wave in the reverse direction from the downstream region 24d to the upstream region 24c is generated, such as during vacuum break or backflow cleaning, the filter flange 61 is not displaced, and the filter flange It is possible to prevent 61 from being displaced and the inner hole of the partition plate 37 and the downstream region 24d from being directly connected without passing through the filter 32D.

  In the filter unit 26D thus mounted, the gas guided to the upstream region 24c flows into the filter unit 26D, that is, the filter 32D through the inlet 26b. The gas flows out from the inside to the outside of the filter 32D, and further flows through the plurality of ventilation holes 31 to the downstream region 24d. Thereby, the dust contained in the gas flowing in the downstream region 24d is captured by the filter 32D, and the dust is removed from the gas. The gas from which the dust has been removed flows out from the outlet 24b of the main passage 24 and flows toward the decompression pump 16 through the pipe 17 (see FIG. 1). Therefore, clean gas that does not contain dust flows through the configuration downstream of the dust collector 1D, such as the piping 17 and the decompression pump 16 (see FIG. 1), and the configuration is not contaminated by dust. .

  In the dust collector 1 </ b> D configured as described above, the filter flange 61 is sandwiched between the partition plate 37 and the flange pressing portion 62, so that dust is generated from between the partition plate 37 and the flange pressing portion 62 and the filter flange 61. It is possible to suppress the escape to the downstream side. Therefore, since it is not necessary to use a seal member or the like, the number of parts can be reduced, and the processing accuracy of the filter unit 26D and the partition plate 37 can be lowered. Thereby, manufacture of the dust collector 1 is easy.

  Hereinafter, how to assemble the filter unit 26D and how to attach the filter unit 26D to the tube body 21 will be briefly described. First, the filter 32D is inserted into the lower opening 28b of the first holder portion 28D of the holder 27D. At this time, the filter 32D is inserted into the opening 28b from the extended portion 32c, and the holder 27D is lowered or the filter 32D is raised until the filter flange 61 comes into contact with the flange pressing portion 62. After that, the extended portion 32c protruding from the upper opening 29c of the second holder portion 29D of the holder 27D is folded outward as indicated by an arrow A in FIG. After the folding, the rule 35D is fitted into the blind in the opening 29c on the upper side of the second holder part 29D and closed, and then the hose band 34 is wound around the hose band attaching part 29b and the extension part 32c and the holder 27D are blinded. The rule 35D is fixed. Note that, after the folding, before the rule 35D is fitted into the opening 29c, the extension portion 32c may be wound around the hose band attaching portion 29b and the hose band 34 may be wound to fix the extension portion 32c to the holder 27D.

  The filter unit 26D assembled in this way is inserted into the insertion port 25a of the tube body 21 from the distal end portion 26a side (second holder portion 28D side). The filter unit 26D is pushed into the blind until the rule 35D hits the ferrule 23a, and the outer peripheral edge of the rule 35D and the ferrule 23a are clamped by the clamp member 39 into the blind. Then, the filter flange 61 hits the partition plate 37 and is further clamped by the partition plate 37 and the flange pressing portion 62 and fixed on the partition plate 37. The filter flange 61 fixed in this manner is disposed so as to surround the inner hole of the partition plate 37, and thereby the filter unit 26 </ b> D is placed over the inner hole of the partition plate 37. As a result, the filter unit 26D is attached as shown in FIG. When the filter 32D is replaced, the filter unit 26D can be removed from the tube body 21 and the filter 32D can be removed from the filter unit 26D by performing a procedure reverse to that at the time of attachment.

  Thus, since the filter unit 26D can be fixed by being inserted from the insertion port 25a and pressing the tip end portion 26a against the partition plate 37, the attachment and detachment thereof is easy. Further, since the bottomed filter 32D is accommodated in the holder 27D and dust is captured inside thereof, the dust does not adhere to the holder 27D and the lid 35D. Therefore, dust attached to the holder 27D does not adhere to the worker when the filter 32D is removed from the holder 27D, and the worker's clothes are not soiled when the filter 32D is replaced. Furthermore, when removing the filter 32D, the inner surface of the filter 32D capturing dust does not hit the holder 27D, and the filter 32D is removed from the holder 27D while closing the inflow port 26b. The dust is not scattered. Thereby, it is possible to prevent the captured dust from being diffused into the atmosphere or contaminating the worker's clothes.

  In addition, the dust collector 1D has substantially the same effects as the dust collector 1 of the first embodiment.

<Sixth Embodiment>
As shown in FIG. 12, the dust collector 1E of the sixth embodiment has a tubular body 21B having the same shape as the dust collector 1B of the third embodiment. A filter unit 26D is inserted into the insertion port 25b of the attachment / detachment passage 25A of the tube body 21B, and the filter unit 26D is pushed into the blind until the rule 35D hits the ferrule 22e. The outer edge portion of the blind ferrule 35 and the ferrule 23 a are sandwiched by a clamp member 39. Further, the front end portion 26a of the filter unit 26D is in contact with the partition plate 37A, and the filter flange 61 is sandwiched between the partition plate 37A and the flange pressing portion 62. As in the case of the fifth embodiment, the filter unit 26D attached in this way has its inlet 26b facing the upstream region 24c through the inner hole of the partition plate 37A, and the upstream region. Dust contained in the gas flowing from the region 24d to the downstream region 24d can be captured.

  The dust collector 1E configured as described above has the same effects as the dust collector 1D of the fifth embodiment. The dust collectors 1D and 1E can be selected for use according to the arrangement of the pipe 17 connected to the outlet 24b of the main passage 24.

<Other embodiments>
In 1st thru | or 6th Embodiment, although the mixing dryer 2 heated while decompressing the inside of an apparatus using the pressure reduction pump 16 was demonstrated, it is not limited to this. For example, you may apply to the apparatus which heats the container 3 of the mixing drier 2 and dries a to-be-processed object, without reducing pressure. Moreover, about the junction part of the mixing dryer 2 and the dust collector 1, it is not limited to a flange structure, The junction structure using a ferrule, a clamp, etc. may be sufficient.

  In addition, the filter unit 26 has a structure in which a plurality of rods 30 are arranged at equal intervals and the filter 32 is provided on the outer peripheral surface. However, the present invention is not limited to this. The holder 27 may be used, and the holder 27 may be formed by forming a punching metal or a wire mesh into a cylindrical shape without providing the holder portions 28 and 29.

  Further, the hose bands 33 and 34 are used to fix the filter 32, but this is not limited to the hose bands 33 and 34 shown in the figure, and other shapes such as a hose band, other wire bands, and a free band are used. Any filter that can fix the filter 32 may be used. Further, the filter unit 26 and the sub pipe 23 are connected to each other using a ferrule 23a and a blind ferrule 35. However, the present invention is not limited to this, and a normal flange is used to use a bolt, a nut, a clamp, or the like. May be joined.

  In the first to sixth embodiments, Y-shaped or T-shaped tubular bodies 21 and 21B are employed, but tubular bodies having other shapes may be used. For example, it may be a cross-shaped tube body, and may be a tube body having at least three openings of the inlet 24a and the outlet 24b of the main passage 24 and the insertion port 25a of the detachment passage 25.

  In the first to third embodiments, the filter 32 is wound around the entire circumference of the filter unit 26 in the circumferential direction, but is not necessarily limited to such a configuration. For example, the ventilation port 31 may be formed only in a partial region of the filter unit 26 in the circumferential direction, and the filter 32 may cover a portion of the circumferential direction. In this case, the filter 32 is not wound over the entire circumference in the circumferential direction, and the filter 32 is not cylindrical, but the gas that has entered the filter unit 26 passes from the inside of the filter 32 to the downstream side through the outside. It flows.

  Furthermore, although the 1st thru | or 6th embodiment demonstrated the case where the dust collector 1 was applied to PV mixer made from Shinko Environmental Solution Co., the mixing dryer 2 to apply is not limited to this, A bell-shaped mixing is applied. It can also be used in a dryer and the container shape is not particularly limited. As such a mixing dryer, for example, there is an SV mixer, a conical dryer, or a filter dryer manufactured by Shinko Environmental Solution Co., Ltd.

  Furthermore, in 2nd or 3rd Embodiment, although it comprised so that the front-end | tip part 26a of the filter unit 26 may be hold | maintained at the partition plate 37, it is not limited to this, A part of piping (main pipe | tube 22) is made inside. The filter unit 26 may be held at the throttle portion, and the upstream side and the downstream side may be sealed, or a face seal may be used.

  In the first embodiment, since the operator replaces the entire filter unit 26, the operator can be prevented from touching the dust in the entire replacement operation of the filter unit 26. However, the present invention is not limited to this. For example, an operator may replace the filter 32. Specifically, after extracting the filter unit 26, the hose bands 33 and 34 are removed, and the filter 32 is removed from the holder 27. Next, a new filter 32 is wound around the holder 27 from which the filter 32 has been removed, and the upper and lower ends of the filter 32 are tied with hose bands 33 and 34, and the new filter 32 is attached to the holder 27. Even in this case, since the surface of the filter 32 supplementing the dust is inside, the filter can be replaced while suppressing the operator from touching the dust.

  The filters 32 and 32D have a bottomed cylindrical shape, but may have a simple cylindrical shape. In this case, it is only necessary that the opening on the side opposite to the opening on the inflow port 26a is blocked by a structure such as a rule so that the gas guided to the filters 32 and 32D does not leak into the downstream region 24d. Even in this case, the same effect can be obtained with the bottomed cylindrical filters 32 and 32D.

  The present invention is not limited to the embodiments, and can be added, deleted, and changed without departing from the spirit of the invention.

  The present invention can be applied to a dust collector that captures dust contained in a fluid discharged from the inside of the mixing dryer to the outside of the machine and a mixing dryer having the dust collector.

1, 1A-1E Dust collector 2 Mixing dryer 21, 21B Tube 24, 24A, 24B Main passage 25, 25A Desorption passage 26, 26D Filter unit 25a Insertion port 27, 27D Holder 31 Ventilation port 32, 32D Filter 35, 35D Rules for blinds 61 Filter flange

Claims (10)

A dust collector for capturing dust contained in a gas used in a mixing dryer and discharged from the inside of the machine,
A pipe connected to the inside and outside of the aircraft;
A filter unit having a filter that is detachably provided on the tube and is arranged so as to separate the inside of the machine from the inside of the machine and the outside of the machine while being attached to the tube. Prepared,
The filter unit has a bottomed cylindrical shape having an inlet opening toward the inside of the machine, and gas that has entered the filter unit from the inside of the machine through the inlet passes from the inside to the outside of the filter. The dust collector is adapted to be discharged to the outside of the machine. The tubular body has a main passage that connects the outside of the machine and the inside of the machine, and a detachment passage that is connected to the main passage and extends in a direction different from the main passage,
The desorption passage has an insertion port, and the filter unit can be inserted and removed from the insertion port.
2. The dust collecting apparatus according to claim 1, wherein the filter unit can be attached to and detached from the tube body by being inserted into and removed from the insertion port through the insertion port. The filter unit has a lid,
The dust collector according to claim 2, wherein the lid is configured to close the insertion port when the filter unit is attached to the pipe body.   4. The dust collecting apparatus according to claim 2, wherein the filter extends to the vicinity of the insertion port in the desorption passage. The filter unit has a cylindrical holder that can be attached to and detached from the tubular body by inserting and removing from the insertion port.
The holder has a vent hole that can discharge the gas inside thereof to the outside of the machine,
The filter has a cylindrical shape, and the opening is accommodated in the holder with the opening facing toward the inside of the machine, so that the inlet is formed on one opening side of the holder. The dust collector according to claim 2. The filter has a filter flange capable of capturing dust at an opening end portion forming the inlet,
The dust collector according to claim 5, wherein the holder fixes the filter by sandwiching the tube body and the filter flange. The filter unit has a lid,
The lid is attached to the other opening of the holder, and when the filter unit is attached to the tube, the insertion port is closed.
The filter has an extension extending to the lid;
The dust collector according to claim 5 or 6, wherein the extended portion is sandwiched and fixed between the holder and the lid.   The dust filter according to any one of claims 2 to 7, wherein the filter unit is disposed in a state of projecting from the desorption passage to the main passage.   A mixing dryer comprising the dust collecting device according to any one of claims 1 to 8. The tubular body is arranged so that the aircraft inner side is on the lower side,
The mixing dryer according to claim 9, wherein the filter unit is arranged so that the inflow port is opened downward toward the inside of the machine.

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