JP2004155591A - Hopper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hopper device for accurately discharging the contents of a hopper. <P>SOLUTION: A first opening/closing plate 7 is provided in a first drop-off port 5 of an accumulation hopper 2 and a measuring hopper 14 is provided under the first drop-off port 5. The measuring hopper 14 has a second drop-off port 15 and is hung down via a load cell 18 as a weight measuring means. The contents of the accumulation hopper 2 is dropped from the first drop-off port 5 and stored in the measuring hopper 14, and the weight thereof in the measuring hopper 14 can be accurately measured by the load cell 18. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a hopper device for storing cereals and the like.

  2. Description of the Related Art Conventionally, as this type, a pedestal unit having a weight measuring unit for placing an object to be weighed and a weighing unit having a display unit for displaying the weight measured by the weighing unit are known. When measuring, for example, 1 ton of paddy on such a platform scale, paddy is accumulated in advance in an accumulation hopper, while a storage container such as a bag is set on the platform, and the accumulation hopper is Is opened and the paddy is dropped and put into the container, and when the weight measurement reaches 1 ton, the lower drop opening is closed to finish the measurement.

  However, in such a platform scale for 1 ton or the like, it was not possible to measure the weight by subdividing the paddy or the like into, for example, 30 kg.

As a solution to such a problem, there is known a device in which a weight of powdery or granular material is measured in a measuring hopper supported by a weighing rod (for example, Patent Document 1).
JP-B-47-37903

  However, in the prior art, the measuring hopper was supported by the weighing rod, so that miniaturization and the like could not be achieved.

  Therefore, an object of the present invention is to provide a hopper device that can accurately measure and reduce the size and the like.

  According to the first aspect of the present invention, a first opening / closing body is provided at a first dropping port of an accumulation hopper, a weighing hopper is provided below the first dropping port, and the weighing hopper has a second dropping port. And the weighing hopper is suspended via weight weighing means.

  2. The hopper according to claim 1, wherein the first opening / closing member sets the first drop port to a fully opened state, a fully closed state, or an intermediate state between a fully opened state and a fully closed state. Device.

  The invention according to claim 3 is characterized in that a suspending member is provided on the upper part of the weighing hopper, and the suspending member is provided on the suspending member suspended from the stacking hopper via the weight measuring means composed of a load cell. A hopper device according to claim 1 or 2, wherein

  The invention according to claim 4 is characterized in that the weighing hopper is provided with a second dropping port, and the second dropping port is provided with a second opening / closing body. 4. The hopper device according to item 1.

  According to the first aspect of the present invention, the contents of the collecting hopper are dropped and stored in the weighing hopper from the first dropping port, and the weight weighing means can accurately measure the weight of the weighing hopper.

  According to the second aspect of the present invention, the contents of the stacking hopper are weighed from the first dropping port through the first opening / closing body which is in a fully opened state, a fully closed state, or a state between the fully opened and fully closed states. The weight weighing means can accurately measure the weight of the weighing hopper.

  According to the third aspect of the present invention, the object to be stored in the collecting hopper is dropped and stored in the weighing hopper from the first dropping port, and the weight of the weighing hopper can be accurately measured by the weight measuring means including the load cell. .

  According to the fourth aspect of the invention, the second opening / closing body can discharge the second opening / closing plate by fully opening the second opening / closing plate after fully closing the second drop opening.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A stacking hopper 2 is provided on an upper part of a pillar 1 standing on all sides. The stacking hopper 2 accommodates an object to be weighed before being weighed, and includes an inverted quadrangular pyramid-shaped hopper main body 3 and a rectangular cylindrical body 4 arranged at an upper portion thereof. A first drop port 5 is formed in a lower portion of the hopper body 3. The first drop port 5 is provided with an opening / closing device 6 for opening and closing the first drop port 5. The opening / closing device 6 includes a first opening / closing plate 7 serving as a first opening / closing body that swings so as to close the first drop port 5 and a first opening / closing plate for rotating the opening / closing plate 7. The first electromagnet device 8 as a driving device and the second electromagnet device 9 as a second opening / closing driving device, and the first and second reciprocating operation shafts 10 of these first and second electromagnet devices 8 and 9 There are provided first and second connecting rods 12 and 13 connecting the opening and closing plate 7 to the opening and closing plate 7. A first connecting rod 12 connected to the reciprocating operation shaft 10 of the first electromagnet device 8 is rotatably connected to one side plate 7B of the opening / closing plate 7, and is a moving direction of the first connecting rod 12. A long hole 12A is formed in the longitudinal direction, and a protrusion 7C protruding from one side plate 7B is inserted into the long hole 12A. On the other hand, the second connecting rod 13 connected to the reciprocating operation shaft 11 of the second electromagnet device 9 is rotatably connected to the other side plate 7D. Therefore, as shown in FIG. 4, when the first electromagnet device 8 and the second electromagnet device 9 are energized, the first and second connecting rods 12, 13 are pulled, and the opening / closing plate 7 can be fully opened. In this case, the protruding portion 7C is locked on the distal end side of the long hole 12A. On the other hand, as shown in FIG. 5, when the first electromagnet device 8 is energized to pull the first connecting rod 12 and the second electromagnet device 9 is de-energized, the second connecting rod 13 returns to the return spring (see FIG. 5). As a result, the protrusion 7C is pulled by the leading end of the long hole 12A in a locked state, and is pushed by a return spring (not shown). It can be intermediate between the fully open and fully closed states. The setting of the intermediate position may be performed by other means. Further, as shown in FIG. 3, when the first electromagnet device 8 and the second electromagnet device 9 are de-energized, the first and second connecting rods 12 and 13 are pushed and the opening / closing plate 7 is moved by the second connecting rod 13. It can be in a fully closed state.

  A weighing hopper 14 is provided below the first drop 5. The weighing hopper 14 has a rectangular tube shape having a narrow lower portion, and has a second drop port 15 formed at a lower portion thereof. On the upper part of the weighing hopper 14, a hanging member 16 having an inverted shape in which a downward member 16B is provided on both sides of a horizontal member 16A is provided. Then, the suspension member 16 is suspended via a load cell 18 as a weight measuring means on an L-shaped suspension member 17 suspended from the side surface of the accumulation hopper 2 and provided with a center-facing member 17B at the lower end of a downward-facing member 17A. The second drop 15 is provided with an opening / closing device 19 for opening and closing the second drop 15. The opening / closing device 19 includes a second opening / closing plate 20 serving as a second opening / closing body that rotates so as to close the second drop opening 15 and a third driving device for rotating the opening / closing plate 20. A third electromagnet device 21 and a connecting rod 23 connecting a third advance / retreat operating shaft 22 of the third electromagnet device 21 and the open / close plate 20 are provided. The third reciprocating shaft 22 retracts and pulls the opening / closing plate 20, and the opening / closing plate 20 rotates about the rotation shaft 20A to open the second drop port 15 entirely. On the other hand, when the third electromagnet device 21 is de-energized, the third reciprocating operating shaft 22 advances by a third return spring (not shown) to push out the opening / closing plate 20, and the opening / closing plate 20 rotates the rotating shaft 20A. Rotating around the center, the second falling port 15 is fully closed.

  Reference numeral 25 denotes a bag holding stand for holding a bag 24 for accommodating, for example, 30 kg of paddy. This stand 25 is provided with support legs 27 arranged on all sides on an installation plate 26 so as to be narrower than the column 1, and an input hopper 28 is provided above the support legs 27, and a lower The third drop port 29 has a narrow mouth shape and can be inserted into the upper opening of the bag 24.

  The control device 30 is based on a load cell 18 disposed on the upper right side of the front and disposed on the left side on the upper left side of the front and an integrated weight display section 31 disposed on the right side of the upper front and displaying a value obtained by integrating (also referred to as accumulation or summation) the weighed values during weighing. A measured weight display section 32 indicating the weight actually measured per one time (also referred to as one batch), a zero button 33 forcibly setting the currently displayed weight to 0 kg from the left to the right in the middle row, The weighing / continuation button 34 for starting the measurement, the completion button 35 for completing the weighing, the operation button 37 of the sampling device 36 described later, and the stop / restart button 38 for stopping or restarting the weighing are provided. Further, on the lower left side, a display switching button 39, a weight setting button 40, a weighing method button 41, an on / off button 42 serving as a power button, a type button 43 for storing a type of the paddy being measured, a date of the weighing date. It is provided with a date button 44 for storing, a slip number button 45 for storing the slip number of the measured material, and a transmission button 46 for transmitting various data to a control device such as a computer and a display device. In the center of the lower stage, there are provided ten (numerical) keys 47 of 0 to 9, a clear key 48, and a setting key 49. Further, on the right side of the lower part, a fixed amount button 50 for setting a subdivision weight per one time (weight per badge), a small supply button 51 for switching supply to small supply (dispensing), and a head compensation weight for total weighing are set. A button 53, a model button 53, and a sample button 54 for setting the maximum number of times of sampling per consignment.

  The sampling device 36 has a through hole (not shown) penetrating the inside and outside on the side surface of the collecting hopper 2, and a plate-shaped shutter 55 for opening and closing the through hole is slidable on the side surface of the collecting hopper 2. The shutter 55 is connected to the forward / backward operation shaft 57 of the fourth electromagnet device 56, a through hole is opened by the operation of the fourth electromagnet device 56, and one of the rice husks accumulated in the accumulation hopper 2 is The portion is taken out via a pipe 58 and can be accommodated in a sample container 61 mounted on a turntable 60 rotatably provided on a horizontal rod 59 provided between a pair of pillars 1.

  Further, a vertical conveyor 62 such as a bucket conveyor is provided at the rear of the stacking hopper 2. The vertical conveyor 62 is provided with an inlet 62A at a lower portion thereof and an outlet 62B at an upper portion facing the upper opening of the collecting hopper 2.

  The control device 30 is connected to the first and second electromagnet devices 8 and 9, the load cell 18, the third electromagnet device 21, and the fourth electromagnet device 56. Then, the control device 30 integrates the weights in the subdivided state and stops discharging from the collecting hopper 2 when the total weight reaches a predetermined target total weight.

  Next, the operation of the above configuration will be described. For example, by putting paddy into the input port 62, the paddy is raised by the vertical conveyor 61, and then put into the collecting hopper 2 from the discharge port 62B. Then, the power is turned on by the on / off button 42. Then start weighing. In actual measurement, the target total weight is generally set to 1000 kg, but in the embodiment, the target total weight is set to 100 kg. As shown in FIG. 9, when weighing the target total weight of 100 kg in small portions of 30 kg, first press the weight setting button 14 and then input the number 100 corresponding to the target total weight of 100 kg with the numeric keypad 47, Press the setting button 49 to confirm the input. Then, the fixed amount button 50 is pressed, the numeral 30 corresponding to the subdivision target weight 30 kg is input by the ten keys 47, and the setting button 49 is pressed to confirm the input. Next, the supply is switched to the small supply (dispensing) at the time of the final measurement corresponding to the fourth measurement, that is, the first opening / closing plate 7 can be set at an intermediate position between the fully opened state and the fully closed state. In order to perform such an operation when the set weight at that time, for example, the load cell 18 detects 6 kg, enter the number 6 corresponding to the small supply target weight 6 kg and press the setting button 49 to Confirm the input.

  By such an input operation, the control device 30 repeats the subdivision weighing of 30 kg each three times with the target total weight of 100 kg, and in the final fourth weighing, when the small supply (dispensing) set target value of 6 kg is weighed, the small weighing is performed. Supply (dispensing), that is, switching is performed so that the first opening / closing plate 7 is opened to be smaller than full opening, and it is calculated that the integrated weight weighs 100 kg and ends. Therefore, as shown in FIG. 9, after a container (not shown) such as a bag capable of accommodating 100 kg of paddy is installed below the second drop 15 in place of the bag 24 and the stand 25 in advance, the control device Activate 30. In FIG. 9, the vertical axis indicates the weighing weight, the horizontal axis indicates the number of weighing steps, the solid line in the table indicates the weighing weight in each weighing step (each badge), and the one-dot chain line indicates the cumulative (cumulative or total). ) Indicates weight. In the first weighing, the second opening / closing plate 20 is previously closed, and the first opening / closing plate 7 is fully opened, so that the paddy of the collecting hopper 2 is discharged from the first dropping port 5 to the weighing hopper 14. Is dropped and housed. The load cell 18 detects the weight of the weighing hopper 14, and when 30 kg is detected, the control device 30 puts the first electromagnet device 8 and the second electromagnet device 9 into a non-energized state and brings them into a fully closed state. However, since the time when 30 kg is detected and the time when the first opening / closing plate 7 is fully closed do not coincide with each other, that is, a time lag occurs between the two, the 30 kg from the first drop 5 to the weighing hopper 14 exceeds 30 kg. For example, 31 kg of paddy is stored. At the same time, the weight is displayed on the integrated weight display section 31 and the measured weight display section 32. Then, the second opening / closing plate 20 is fully opened, and 31 kg of paddy is stored in the 100 kg container as the first measurement. After a predetermined time, the second opening / closing plate 20 is fully closed, and when the first opening / closing plate 7 is fully opened again, more than 30 kg of, for example, 31 kg of paddy is stored again in the weighing hopper 14 from the first drop port 5. Thus, the first opening / closing plate 7 is fully closed. According to the second measurement, that is, for example, 62 kg is displayed on the integrated weight display section 31, and 31 kg is displayed on the measured weight display section 32.

  Then, the second opening / closing plate 20 is fully opened, and 31 kg of paddy is stored in the 100 kg container as the second measurement. Similarly, the third measurement is performed, and for example, 93 kg of paddy is stored in the 100 kg container. In the fourth weighing of the final weighing, the second opening / closing plate 20 is closed in advance, and when the first opening / closing plate 7 is fully opened, the paddy of the collecting hopper 2 is weighed from the first drop port 5. The hopper 14 is dropped and accommodated. The load cell 18 detects the weight of the weighing hopper 14, and upon detecting a preset small supply (dispensing) set target value of 6 kg, the control device 30 turns on the first electromagnet device 8 as described above. The first connecting rod 12 is pulled while the second electromagnet device 9 is de-energized, and the second connecting rod 13 is pushed. As a result, the opening / closing plate 7 is in the middle between the fully opened state and the fully closed state. As a result, the amount per unit time of falling and stored in the weighing hopper 14 from the first dropping port 5 is reduced, and a small supply (dispensing) state is achieved. When the load cell 18 detects 7 kg in this small supply (dispensing) state, that is, when 100 kg is detected in terms of the integrated weight, the first opening / closing plate 7 is fully closed by the control device 30 and the second opening / closing plate 20 is closed. The container is fully opened and the remaining 7 kg is stored in the container, and the measurement of the target total weight of 100 kg is completed.

  On the other hand, in a case where paddy is packed in, for example, a 30 kg bag from the accumulation hopper 2, the bag 24 is set on the stand 25 in advance as shown in FIG. Next, the user presses the weight setting button 40 of the control device 30, inputs the number 30 corresponding to the target weight of 30 kg with the ten keys 47, and presses the setting button 49 to confirm the input. Next, the user presses the fixed amount button 50, inputs the number 30 corresponding to the target weight of 30 kg with the ten keys 47, and presses the setting button 49 to confirm the input. Next, the small supply button 51 is pressed to switch the supply to small supply (dispensing) at the time of weighing, that is, the first opening / closing plate 7 can be set at an intermediate position between full open and full close. In order to perform such an operation when the set amount at that time, for example, the load cell 18 detects 28 kg, enter the number 28 corresponding to the small supply target weight 28 kg and press the setting button 49 to Confirm the input.

  By such an input operation, the control device 30 sets the target weight to 30 kg once, and opens the first opening / closing plate 7 fully until the load cell 18 detects 28 kg as shown in FIG. When the opening / closing plate 20 is accommodated in the weighing hopper 14 in the fully closed state, and the load cell 18 detects 28 kg, the first opening / closing plate 7 is set at a halfway position between the fully opened and fully closed state to supply a small amount (dispensing). The paddy is continuously stored in the weighing hopper 14. Thereafter, when the load cell 18 detects 30, the first opening / closing plate 7 is fully closed. Thereafter, the second opening / closing plate 20 is fully opened and the paddy is stored in the bag 24.

  As described above, in the above embodiment, in the hopper device provided with the opening / closing device 6 for opening and closing the first dropping port 5 provided at the lower part of the collecting hopper 2, the first dropping port 5 of the collecting hopper 2 is The first opening / closing plate 7 is provided, a weighing hopper 14 is provided below the first dropping port 5, and the weighing hopper 14 is provided with a second dropping port 15. The weighing hopper 14 includes a load cell 18 serving as a weight measuring unit. As a result, the load, such as paddy, of the collecting hopper 2 is dropped and stored in the weighing hopper 14 from the first dropping port 5, and the load cell 18 accurately measures the weight of the weighing hopper 14. be able to. Furthermore, since the weighing hopper 14 is suspended via the load cell 18, the lower part of the weighing hopper 14 is opened, so that the bag 24 can be easily taken in and out, and further downsizing can be achieved. it can.

  In addition, an inverted hanging member 16 having a downward member 16B provided on both sides of a horizontal member 16A at the upper part of the weighing hopper 14 is provided. Since the suspension member 16 is suspended from the L-shaped suspension member 17 provided with the orientation member 17B via the load cell 18 serving as the weight measuring means, not only below the measurement hopper 14 but also on the sides, the suspension is opened. The bag 24 can be taken in and out more easily, and the size can be further reduced. .

  Also, a first opening / closing plate 7 capable of opening and closing the first dropping port 5 and the first opening / closing plate 7 are opened at an intermediate position between the first dropping port 5 in addition to being fully closed and fully opened. By providing the first electromagnet device 8 as a driving device for holding and the second electromagnet device 9 as a second opening / closing driving device, the first drop port 5 is fully opened and fully closed, and Therefore, the amount of paddy discharged per unit time from the first drop 5 can be adjusted, and an accurate amount can be discharged. Further, the weighing hopper 14 is provided with a second dropping port 15, and a second opening / closing plate 20 is provided at the second dropping port 15, and the second opening / closing plate 20 fully closes the second dropping port 15. Thereafter, the second opening / closing plate 20 is fully opened to discharge the paddy and the like, so that the discharge can be performed quickly.

  Further, the first opening / closing plate 7 is provided so as to swing and open and close at the first drop opening 5, and is directly connected to the first opening / closing plate 7 via a second connecting rod 13. A second electromagnet device 9 for fully opening or fully closing the plate 7 and a first electromagnet device 8 connected via the first connecting rod 12 having an elongated hole 12A in which the projection 7C can be locked. The first opening / closing plate 7 can be fully opened, fully closed and opened at an intermediate position between the first opening / closing plate 7 and the amount of paddy discharged per unit time from the first drop 5 can be adjusted. By setting the individual first opening / closing plates 7 to the fully opened, fully closed and intermediate positions thereof, the area around the first drop port 5 can be formed compactly.

  In addition, the first opening / closing plate 7 can be fully opened, fully closed and at an intermediate position by a combination of the first and second electromagnet devices 8 and 9, so that the operation can be performed reliably and at low cost. Can be manufactured.

  Further, in the weighing method, a first opening / closing plate 7 which is opened and held at a middle position between the first opening 5 and the first opening 5 of the collecting hopper 2 is provided in addition to the fully opened and closed state. A weighing hopper 14 is provided below the weighing hopper 14, the weighing hopper 14 is provided with a load cell 18 and a second drop port 15, and the second drop port 15 is provided with a second opening / closing plate 20 which is fully opened and fully closed. After opening the open / close plate 7 and storing the paddy in the stacking hopper 2 in the weighing hopper 14, the weight of the stored paddy reaches the subdivision weight target value of, for example, 30 kg by the load cell 18, and The first opening / closing plate 7 is closed, and the second opening / closing plate 20 is fully opened and discharged from the second drop port 15. The integrated value of the divided weight measurement by the weighing hopper 14 is, for example, 100 kg. Repeat weighing until the target total weight is In the weighing method of the hopper device, the subdivided weighing by the weighing hopper 14 is such that the first opening / closing plate 7 is repeatedly opened and closed until the integrated value approaches the target gross weight. When the value approaches the target gross weight, the first opening / closing body 7 is opened and held at an intermediate position after being fully opened, and then fully closed, so that the first to third times, for example, 30 kg. In the subdivision weighing described above, the first opening / closing plate 7 performs weighing by repeatedly opening and closing completely, so that the weighing speed can be increased. On the other hand, in the fourth weighing, the first opening / closing plate 7 is used. When the small supply (dispensing) set target value reaches a preset small supply (dispensing) set value after weighing with 7 fully open, the weighing is adjusted by reducing the opening degree of the first opening / closing plate 7 to reduce the discharge amount per unit time. While measuring up to the target gross weight In other words, since the adjustment by the first opening and closing plate 7 at the time of weighing is performed at the time of the final measurement, there is no time loss associated with the adjustment by the first opening and closing plate 7 except for the last time. The total time required for weighing can be reduced. In the case where only 30 kg is weighed, for example, the adjustment by the first opening / closing plate 7 can be performed at the time of weighing. Can be accurately measured.

  In addition, the integrated value approaches the target total weight of, for example, 100 kg, and the first opening / closing plate 7 is fully opened and held at an intermediate position. Thereafter, the step of fully closing is performed in the fourth final step. By doing so, only one small supply (dispensing) is required until the weighing reaches the target total weight. Therefore, the number of times associated with the adjustment by the first opening / closing plate 7 is set to one in the final process. Only the total time of weighing can be minimized.

  Moreover, in the embodiment, the target total weight, the subdivision weight target value, and the small supply (dispensing) setting target value can be freely set in the control device 30, so that any weighing can be dealt with. In addition, the operation is the same with the weight setting button 40, the fixed amount button 50, and the small supply button 51, both in the case of weighing (accumulation or totaling) and in the case of one time (one badge). Excellent operability.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, although the embodiment uses the electromagnet device, the first and second opening / closing members may be operated by a driving device such as a hydraulic or pneumatic cylinder device or a motor.

It is a front view showing Example 1 of the present invention. FIG. 2 is a side view illustrating the first embodiment of the present invention. FIG. 2 is a perspective view of a main part showing a fully closed state of the opening / closing plate according to the first embodiment of the present invention. FIG. 2 is a perspective view of a main part showing a fully opened state of the opening / closing plate according to the first embodiment of the present invention. FIG. 2 is a perspective view of a main part showing an intermediate state of the opening / closing plate according to the first embodiment of the present invention. 1 is a front view of a control device according to a first embodiment of the present invention. FIG. 1 is a block diagram illustrating a first embodiment of the present invention. 1 is a flowchart showing Embodiment 1 of the present invention. 5 is a graph at the time of integrated weighing showing the first embodiment of the present invention. 5 is a graph at the time of single measurement showing Example 1 of the present invention.

Explanation of reference numerals

2 hopper 5 for stacking 5 1st drop 7 7 1st opening and closing plate (opening and closing body)
14 Weighing hopper
15 2nd fall
16 Suspension members
17 Suspension members
18 Load cell (weighing means)
20 Second opening / closing plate (opening / closing body)

Claims (4)

  A first opening / closing body is provided at a first dropping port of an accumulation hopper, a weighing hopper is provided below the first dropping port, and the weighing hopper is suspended via weight measuring means. Hopper device.   2. The hopper device according to claim 1, wherein the first opening / closing body sets the first drop port to a fully opened state, a fully closed state, or an intermediate state between a fully opened state and a fully closed state. 3.   The hanging member is provided on the upper part of the weighing hopper, and the hanging member is provided on the hanging member suspended from the collecting hopper via the weight weighing means including a load cell. 3. The hopper device according to 2.   The hopper device according to any one of claims 1 to 3, wherein the weighing hopper includes a second drop port, and a second opening / closing body is provided at the second drop port.

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