JP4026025B2 - Liquid jet pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid jet pump.
[0002]
[Prior art]
As a liquid jet pump, for example, as shown in FIG. 5, a fixed suction part X in which a cylinder 53 is fixed in a state where a lower end is suspended into the container body by a mounting cylinder 52 fitted to the outer periphery of the mouth / neck part 51 of the container body 50. And an operating member Y in which a push-down head 56 with a nozzle 55 is fitted and fixed to the upper end of a stem 54 that is protruded so as to be able to move up and down in an upwardly biased state from the opening at the center of the upper end of the suction part. It is known that the liquid in the container body is sucked up by movement and ejected from the nozzle 55, and is configured so as to be able to be screwed and locked to the fixed suction part X in a state where the operating member Y is pushed down.
[0003]
These also generally have an intake hole 57 for sucking outside air in the upper part of the cylinder 53 thereof. These intake holes 57 are used to introduce outside air into the container body that is negatively pressured as the liquid decreases when the operation member Y is moved up and down to eject the liquid in the container body. It is configured such that outside air is introduced into the container body 50 through the air intake hole 57 from the gap with the upper edge of the fixed suction portion upper opening.
[0004]
[Problems to be solved by the invention]
In this type of conventional container, the inside and outside of the cylinder 53 communicate with each other through the air intake hole 57 when the operating member Y is pushed down and screwed and locked. Therefore, if the container is accidentally tilted, etc., the liquid in the container will enter the cylinder 53 above the piston via the intake hole 57.If the container is used from this state, the liquid leaking above the piston will There is a risk of inconvenience of leaking to the outside through a gap with the upper end opening.
[0005]
In addition, when using a container equipped with this type of pump, for example, it is often used in a water field such as a bathroom. At that time, a cylinder or the like is formed from the gap between the outer surface of the stem and the upper edge of the fixed suction portion by a shower or the like. There may be a problem that water enters the container body from the air intake hole through the inside.
[0006]
In view of the above-mentioned points, the present invention does not leak liquid from the inside of the container into the cylinder even when the container is tilted in a state where the operation member is pushed down when not in use, and when used in a water field during use. the infiltration of the liquid from the gap between the stem outer surface and the fixed suction unit upper opening edge portion can be prevented as much as possible, yet, excellent liquid jetting pump as compared with the conventional products can be easily produced without change of substantial structural This is a proposal.
[0007]
[Means for Solving the Problems]
As a first means , the cylinder 5 is fixed in a state where the lower end is suspended in the container body by the mounting cylinder 4 fitted to the outer periphery of the neck 3 of the container body 2, and an intake hole for introducing outside air is formed in the upper part of the cylinder. 6 and a fixed suction portion A formed by drilling 6 and an operation in which a push-down head 9 with a nozzle 8 is fitted and fixed to the upper end of a stem 7 that protrudes upwardly in an upwardly biased state from the opening at the center of the upper end of the fixed suction portion And a member B configured to suck up the liquid in the container by the vertical movement of the operating member and eject the liquid from the nozzle, and to be able to be locked to the fixed suction portion A in a state where the operating member B is pushed down. In the liquid jet pump, when the operating member B shifts to the lowest lowered locking state, the operating member B is pushed down to shift to the closed state of the intake hole 6 and the operating member B shifts to the highest raised state. When you make The closed cylindrical member 17 which is pushed up by the member and shifts to the intake hole 6 open state and maintains the intake hole 6 open state when the operating member B is in the up-and-down operation for liquid ejection, The upper end opening edge of A was fitted to be slidable up and down .
[0008]
As a second means, in the first means, the closing cylinder member 17 is slidably fitted to the upper part of the cylinder 5 to close the intake hole 6 so as to be able to open and close; The closing portion is provided so as to protrude from the outer periphery of the lower end, and includes a base cylinder portion 19 fitted to the inner surface of the upper edge of the fixed suction portion A so as to be slidable vertically. When moving to the state, it is pushed down by the downward step portion 25 provided on the upper part of the operating member B to shift to the closed state of the intake hole 6, and provided to the lower part of the operating member when the operating member B shifts to the highest state. It is configured to be pushed up by the upward step 24 to shift to the intake hole 6 open state, and to maintain the intake hole 6 open state when the operating member B is operated up and down for liquid ejection .
.
[0009]
As a third means, in the second means, the upper end of the base cylinder portion 19 in the most elevated state of the closed cylinder member 17 is allowed to enter the liquid above the upper end opening of the fixed suction portion A. It was made to protrude greatly to prevent this.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The liquid jet pump 1 of the present invention fixes the cylinder 5 with the lower end hanging down in the container body by the mounting cylinder 4 fitted to the outer periphery of the neck 3 of the container body 2 and introduces outside air into the upper part of the cylinder. And a lowering head 9 with a nozzle 8 is fitted to the upper end of a stem 7 which is protruded so as to be vertically movable from the opening at the center of the upper end of the fixed suction portion. And a fixed actuating member B. The actuating member is configured to suck up the liquid in the container by the vertical movement of the actuating member and eject the liquid from the nozzle. The actuating member can be locked to the fixed suction part while being pushed down. The so-called push-down head type liquid jet pump is improved.
[0011]
The push-down head 9 in the illustrated example has a vertical cylinder 10 fitted to the upper end of the stem suspended from the center of the back surface of the top wall 11 and a suspended wall 12 suspended from the periphery of the top wall 11 and the upper part of the vertical cylinder 10. A nozzle 8 having a base end opened is projected so as to be ejected forward.
[0012]
The fixed suction portion A has a ring cap 13 fitted and fixed to the upper end of the cylinder 5. The ring cap 13 has a fitting cylinder 14 that is fitted to the outer periphery of the cylinder wall at the upper end of the cylinder 5 through a concave and convex engaging means so that the lower part cannot be pulled out from the back surface of the ring-shaped top plate 15. A guide tube 16 for penetrating the stem 7 is suspended from the periphery, and the outer surface of the guide tube is tightly fitted to the upper surface of the cylinder so as not to rotate.
[0013]
Further, a screw thread is provided around the outer surface of the fitting tube 14 and a screw thread is provided around the lower part of the inner surface of the hanging wall 12 of the push-down head 9 so that they are fixedly sucked when the push-down head is pushed down. It is configured to be able to be locked to the part A.
[0014]
In the present invention, in this type of conventional pump, as shown in the drawing, when the operating member B shifts to the lowest lowered locking state, the operating member B is pushed down to shift to the closed state of the intake hole 6. When the operating member B shifts to the highest position, the operating member B is pushed up by the operating member to shift to the open state of the intake hole 6, and the open state of the intake hole 6 is maintained when the operating member B is operated up and down for liquid ejection. The closing cylinder member 17 is fitted to the fixed suction part A upper end opening edge outside the stem 7 so as to be slidable up and down.
[0015]
By providing this closed cylinder member 17, the intake hole 6 of the cylinder 5 is closed when the operating member B is pushed down and locked to prevent inadvertent leakage of liquid from the container body 2 into the cylinder. When the actuating member is moved up and down to eject liquid, the intake hole 6 is opened, and negative pressure is generated through the gap between the stem 7 and the closed cylinder member 17 via the intake hole 6. The outside air is introduced into the container body.
[0016]
In the embodiment shown in the drawings, the closed cylinder member 17 is slidably fitted to the upper part of the cylinder 5 to close the intake hole 6 so that the intake hole 6 can be opened and closed. A base tube portion 19 is provided that protrudes and is fitted to the inner surface of the guide tube 16 of the ring cap 13 so as to be slidable up and down.
[0017]
The sliding closing portion 18 can be slid in the upper part of the cylinder 5 and can be used in various shapes if the intake hole 6 is closed so as to be opened and closed. For example, as shown in FIG. It may be a cylindrical shape integrally extending to the tip edge thereof via a portion, or a shape having upper and lower skirt-like portions as shown in FIG.
[0018]
In the embodiment shown in FIG. 1, a cylindrical projection 19 is formed by projecting a short sliding projection 20 that is cylindrical and has a skirt shape that is upwardly upward from the central portion of the outer surface in the vertical direction. 16 inner surface slidably fitted in, also, the guide cylinder 16, the protrusions 21 and impact set from the inner surface of the upper end, is brought into sliding contact with the distal end face based on tubular portion 19 outer surface, also the inner surface vertically A downward locking step portion 22 is formed at a predetermined position in the central portion, and the lower portion thereof is enlarged in diameter. The sliding protrusion 20 is slidably fitted into the large diameter portion, and the sliding protrusion 20 is engaged with the locking step portion 22. It is configured so that it will not be raised further.
[0019]
In the embodiment shown in FIG. 3, a plurality of longitudinal ridges 23 project in the lower half of the outer surface of the cylindrical base tube portion 19, and the guide tube 16 of the ring cap 13 has a predetermined position in the center in the vertical direction. A downwardly-facing locking step 22 is formed on the lower portion and the lower portion is configured to have a large diameter, and the outer surface of the base tube portion 19 slides on the inner surface of the small-diameter portion above the locking step portion 22, and each vertical protrusion 23 is It is configured to be locked to the lower surface of the locking step portion 22 so as not to rise further.
[0020]
Further, as shown in FIG. 3, the base cylinder portion 19 can be configured such that the upper end of the closing cylinder member 17 protrudes upward from the upper end opening of the fixed suction portion A in the highest state. By configuring in this way, when the container equipped with the pump 1 is used in a water field, it is ensured that the water spouted from a shower or the like infiltrates from the gap between the stem 7 and the fixed suction part A upper end opening edge. Can be prevented.
[0021]
Further, as a mechanism for moving the closing cylinder member 17 up and down, in the illustrated example, an upward step 24 is formed at a predetermined position on the lower part of the outer surface of the stem 7 so that the lower surface of the base cylinder part 19 of the closing cylinder member 17 can be pushed up. In addition, a downward stepped portion 25 is formed at a predetermined position above the vertical cylinder 10 of the push-down head 9 so that the upper surface of the base cylinder portion 19 of the closed cylinder member 17 can be pushed down.
[0022]
When the actuating member B is pushed down from the most elevated state to be screwed and locked to the fixed suction portion A, the downward stepped portion 25 pushes down the upper surface of the base tube portion 19 so that FIG. As shown in FIG. 4, the sliding closing portion 18 is pushed down to a position where the intake hole 6 is closed. Further, when the operation member B is lifted by releasing the screwing from the state, the upward stepped portion 24 pushes up the lower surface of the base tube portion 19 and each engagement of the guide tube 16 as shown in FIG. 1 or FIG. The slide protrusions 20 or the vertical protrusions 23 are pushed up until the stop portions 22 and 22 are locked.
[0023]
Further, the stroke of the actuating member B is configured such that the upward stepped portion 24 and the downward stepped portion 25 do not come into contact with the base tube portion 19 when the actuating member B moves up and down during the liquid ejection.
[0024]
Hereinafter, other parts in the present embodiment will be described.
In the illustrated example, the fixed suction portion A includes a cylinder 5, a mounting cylinder member 26, and the ring cap 13.
[0025]
The cylinder 5 has a cylindrical shape with upper and lower ends opened, and a flange is provided so as to protrude from the upper part of the outer periphery. The lower end portion is reduced in diameter to form a fitting tube portion for pipe fitting, and the upper end is fitted into the tube portion. The pipe 27 is suspended from the lower end of the container. A suction valve 28 is provided at the lower end of the cylinder.
[0026]
The mounting cylinder member 26 is configured by projecting a mounting flange inwardly from the upper end of the mounting cylinder 4, and the flange is rotatably fitted to the upper surface of the flange of the cylinder 5. The fitted ring cap 13 prevents it from coming out and is provided so as to be rotatable with respect to the cylinder. The lower end of the cylinder 5 is inserted and suspended in the container body, and the lower surface of the flange of the cylinder 5 is brought into contact with the upper surface of the container body neck through the packing and is pressed and locked by the flange of the mounting cylinder member 26.
[0027]
The stem 7 is a conduit that communicates with the inside of the cylinder and introduces the liquid therein into the push-down head 9 above. The stem 7 has a cylindrical shape with upper and lower ends opened, and a coil spring 29 is interposed at the lower end. The upper end of the guide tube 16 is projected upward so that it can move up and down. An annular piston 30 having an outer peripheral edge slidably fitted to the inner surface of the cylinder 5 is provided on the outer periphery of the lower end. Further, a discharge valve 31 is provided in the upper part inside.
[0028]
An example of how to use the pump 1 configured as described above will be described. When the storage unit 1 is not used for storage, transportation, etc., the operating member B as shown in FIG. At this time, the sliding closing portion 18 of the closing cylinder member 17 closes the intake hole 6. In use, the push-down head 9 is rotated to remove the screw and raise it. At this time, the lower surface of the closing cylinder member 17 is brought into contact with the upward stepped portion 24 of the actuating member and pushed up, and the closing of the intake hole 6 by the sliding closing portion 18 is released. Next, the push-down head is moved up and down several times to perform an initial operation, and the liquid in the container is introduced into the cylinder to make preparations. At this time, the closed cylinder member 17 is stopped at the uppermost position where it is pushed up. Next, when the push-down head is pushed down, the pressurized liquid in the cylinder opens the discharge valve 31 and ejects from the nozzle 8 through the stem 7. Next, when the pressing of the head is released, the actuating member B is raised by the action of the coil spring 29, and the inside of the cylinder becomes negative pressure so that the discharge valve 31 is closed, and the liquid in the container is introduced by opening the suction valve 28.
[0029]
When the push-down head 9 is screwed and locked again, the upper surface of the closed cylinder member 17 is pushed down by the downward step portion 25 of the head, and the original intake hole 6 is closed.
[0030]
Each of the above members is mainly formed of a synthetic resin, and a metal or a flexible elastomer can be used in combination as required.
[0031]
【The invention's effect】
As described above, the pump according to the present invention is configured as described above, and in particular, when the operating member B shifts to the lowest lowered locking state, it is pushed down by the operating member B and shifts to the closed state of the intake hole 6. At the same time, the operating member B is pushed up by the operating member when shifting to the highest state, and the intake hole 6 is opened, and the intake hole 6 is maintained open when the operating member B is operated vertically for liquid ejection. Since the closed cylinder member 17 is fitted to the upper opening opening edge of the fixed suction portion A outside the stem 7 so as to be vertically slidable, the operating member B is pressed down in a compact state when not in use. In such a case, even if the container is accidentally tilted, there is no risk of liquid leaking from the container body into the cylinder, and as a result, there is a risk of inconvenience such as liquid leaking from the upper end opening of the fixed suction part during use. No.
[0032]
Further, since the opening portion at the upper end of the fixed suction portion A is narrowed by the closed cylinder member 17, it is possible to prevent the liquid from entering through the gap with the stem 7 as much as possible.
Further, since the intake hole is completely opened at the time of use, it is possible to reliably introduce the outside air accompanying the negative pressure of the mounted container body.
[0033]
Further, the pump described in claim 2 has a simple structure and has an advantage that it can be easily manufactured.
[0034]
Furthermore, the pump described in claim 3 has an advantage that the liquid can be more reliably prevented from entering from the upper end of the fixed suction portion.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the pump of the present invention.
FIG. 2 is a vertical cross-sectional view of the working member according to the embodiment in a state where it is pushed down and locked.
FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention.
FIG. 4 is a longitudinal cross-sectional view of the working member according to the embodiment in a state where the operating member is pushed down.
FIG. 5 is a partially cutaway side view showing an example of a conventional pump.
[Explanation of symbols]
2 ... Container body, 3 ... Mouth and neck, 4 ... Installation cylinder, 5 ... Cylinder, 6 ... Intake hole,
7 ... Stem, 8 ... Nozzle, 9 ... Depressing head, 17 ... Blocking cylinder member,
18 ... Sliding block, 19 ... Base tube, 24 ... Upward step, 25 ... Down step,
A ... fixed suction part, B ... actuating member

Claims (1)

  The cylinder 5 is fixed in a state where the lower end is suspended in the container body by the mounting cylinder 4 fitted to the outer periphery of the mouth neck portion 3 of the container body 2, and an intake hole 6 for introducing outside air is formed in the upper part of the cylinder. A fixed suction portion A, and an operating member B in which a push-down head 9 with a nozzle 8 is fitted and fixed to the upper end of a stem 7 which is protruded so as to be vertically movable in an upwardly biased state from the opening at the upper center of the fixed suction portion. In the liquid jet pump configured to suck up the liquid in the container body by the vertical movement of the operating member and to eject the liquid from the nozzle, and to be able to be locked to the fixed suction portion A with the operating member B pushed down. A sliding closing portion 18 that is slidably fitted to the upper portion of the cylinder 5 so as to close the intake hole 6 so as to be openable and closable; Sliding up and down on the inner surface It is composed of a fitted base tube portion 19, and is pushed down by a downward step portion 25 provided on the upper portion of the operating member B when the operating member B shifts to the lowest locking state, and the intake hole 6 is closed. When the operating member B shifts to the highest rise state, it is pushed up by the upward stepped portion 24 provided at the lower part of the operating member to shift to the open state of the intake hole 6, and the operating member B is for liquid ejection. A closed cylinder member 17 configured to maintain the open state of the intake hole 6 during the vertical operation is provided, and the upper end of the base cylinder part 19 in the highest rise state of the closed cylinder member 17 is connected to the upper end opening of the fixed suction part A. A liquid ejection pump characterized by being protruded upward to prevent liquid from entering.

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