JP3983437B2 - Liquid jet pump for container mounting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid jet pump for mounting a container body.
[0002]
[Prior art]
As a liquid ejection pump for mounting a container body, a vertical pump that hangs a cylinder into the container body and a trigger type pump are widely known, both of which suspend a suction pipe to the bottom of the container body, The liquid in the container is sucked into the cylinder by the pump operation, and the liquid in the cylinder is ejected from the nozzle.
[0003]
[Problems to be solved by the invention]
The above-mentioned pump was originally mounted on the container body and used as a container with a pump. However, a so-called refill container body is provided that does not have a pump from the standpoint of reducing waste and resource utilization. Reattach the pump that was originally used to a spare container body that does not have a pump, and replace the pump with a plurality of container bodies. It is now possible to replenish and use many times. In this way, when one pump is used by changing it to another container body several times, it is included in the liquid in the container, unlike the case where one pump is used only for one container body. Microscopic floating substances, crystals of chemicals and other components, and dust that has entered the container when the pump is replaced or refilled, gradually accumulates in the pump over time, etc. It may cause failure. In particular, in the case of a foam jet pump, the jet liquid is foamed, and a net of about 200 mesh is used at the key point of the liquid outflow path. It is difficult to remove objects.
[0004]
The present invention has a liquid suction cylinder portion for mounting the suction pipe on the upper side of the pump, that is, in communication with the cylinder and the injection cylinder in the case of the vertical pump and in the lower part of the cylinder. The pump can be used for a plurality of container bodies many times by providing a filter that allows easy removal of deposits at the lower part of the main cylinder standing upright.
[0005]
[Means for Solving the Problems]
The first means is to provide a filter 11 that closes the lower end opening surface of the cylindrical portion 12 with a net 13 of about 100 mesh or more, and the liquid suction pump portion 5 of the liquid jet pump 1 has the upper cylindrical portion of the filter. The lower part of the suction pipe holding cylinder 21 is detachably fixed to the lower outer surface of the cylindrical part 12 of the filter and detachably fixed to the lower part. The suction pipe 31 is suspended by fitting the upper cylinder portion.
[0007]
As a second means, an inward flange-like portion 14 is provided in the middle portion of the cylindrical portion 12 of the filter, and the upper cylindrical portion of the flange-like portion is formed in the large diameter portion 12a and the lower cylindrical portion is formed in the small diameter portion 12b. The lower end surface of the liquid suction tube portion 5 is placed on the upper surface of the inward flange-like portion 14 so that the large diameter portion 12a is fitted to the lower outer surface of the liquid suction tube portion and the suction pipe is held on the outer surface of the small diameter portion 12b. The upper part of the cylinder 21 is fitted.
[0008]
As a third means, the liquid jet pump 1 having an extension cylinder 5a provided by extending the peripheral wall of the liquid suction cylinder portion 5 downward and the upper end opening surface of the cylinder portion 12 with a net 13 of about 100 mesh or more. From the filter 11 at the bottom end opening of the cylinder part that closes, and the suction pipe holding cylinder 21 that has an outward flange 24 at the lower end of the small cylinder 23 and that hangs the suction pipe 31 with the upper part fixed inside the small cylinder The tube portion 12 of the filter is detachably fitted into the extension tube and cannot be pushed up, and the small tube 23 of the suction pipe holding tube 21 is forced into the lower portion of the tube portion 12 of the filter. In the container-attached liquid jet pump in which the bottom end surfaces of the tube portion 12 and the extension tube 5a of the filter are brought into contact with the upper surface of the outward flange 24 so as to be able to be pulled out ,
The frictional resistance during the small tube 23 withdrawn from the cylindrical portion 12 the inner surface of the filter, are larger than the frictional resistance during withdrawal filter of the cylindrical portion 12 from the extension tube 5a inner surface.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
First, the first embodiment shown in FIG. 1 will be described. Reference numeral 1 denotes a vertical liquid jet pump. The pump is for foaming, has a peripheral wall 2 to be screwed into the outer surface of the container body neck and neck, and has a cylinder 3 having a large diameter portion 3a at the top and a small diameter portion 3b at the bottom, and the lower end of the small diameter portion is A tapered portion 4 having a small diameter is formed, and a ball valve as a suction valve is provided in the tapered portion. Normally, the suction pipe fitting cylinder is suspended from the lower end of the tapered portion, the upper end is fitted to the outer surface of the cylinder, and the suction pipe is suspended.
[0011]
In the present invention, a cylindrical filter 11 is provided in which the lower end opening surface of the cylindrical portion 12 is closed with a net 13 of about 100 mesh or more, and the upper cylindrical portion of the filter is formed by the lower portion of the cylinder small diameter portion 3b. The liquid suction cylinder portion 5 is detachably attached to the lower portion of the liquid suction cylinder portion 5 and is firmly fitted so as not to easily fall out. However, it may be fixed. As shown in the figure, the cylindrical filter is provided with an inward flange-like portion 14 at the middle portion in the vertical direction of the cylindrical portion, the upper cylindrical portion of the flange is the large diameter portion 12a, and the lower cylindrical portion is the small diameter portion 12b. The tapered lower surface of the liquid suction cylinder portion 5 is placed on the upper surface of the inward flange-shaped portion 14.
[0012]
Furthermore, the upper part of the suction pipe holding cylinder 21 provided separately is detachably fitted to the outer surface of the small diameter part 12b formed by the lower cylinder part. The suction pipe holding cylinder is formed with a lower small diameter tapered portion 22 at a portion slightly lower than the middle, and a lower diameter lower cylindrical portion is suspended from the lower end of the tapered portion, and the upper portion of the suction pipe 31 is fitted into the cylindrical portion. The pipe is hung down to the bottom.
[0013]
FIG. 2 shows a second embodiment. The embodiment shows an example in which the filter 11 and the suction pipe holding cylinder 21 are used in a trigger type liquid jet pump 1.
[0014]
As is well known, the trigger type liquid jet pump stands up a main cylinder 6 for sucking liquid, communicates with the main cylinder from an intermediate portion of the main cylinder, projects the cylinder 7 forward, and from the upper end of the main cylinder. The injection cylinder protrudes forward by communicating with the main cylinder, the nozzle 8 is fitted to the front end of the injection cylinder, the trigger 9 is suspended from the front of the injection cylinder, and the trigger is swung back and forth. The plunger 10 protruding forward by fitting the rear portion into the cylinder by the forward movement advances and retreats, sucks the liquid in the container into the cylinder via the suction pipe suspended from the main cylinder 6, and the liquid in the cylinder Is ejected from the nozzle 8 through the injection cylinder. Reference numeral 2 denotes a peripheral wall for screwing the container body neck and neck, and the peripheral wall is suspended so as to be rotatable.
[0015]
In the illustrated example, the large-diameter portion 3a of the filter 11 provided in substantially the same manner as in the case of FIG. 1 is detachably fitted to the outer surface of the liquid suction cylinder portion 5 formed by the lower portion of the main cylinder 6. However, it may be fixed. The upper part of the suction pipe holding cylinder 21 is detachably fixed to the lower part of the filter 11 and the upper cylinder part is further fitted to the outer surface of the lower part of the holding cylinder so that the suction pipe 31 is suspended. This is the same as the case of the embodiment, and the description is omitted by using the same reference numerals.
[0016]
FIG. 3 shows a third embodiment. The liquid jet pump 1 used in this embodiment is the same vertical pump as in FIG. In this embodiment, the liquid suction cylinder portion 5 of the pump, that is, in the illustrated example, the peripheral wall of the cylinder small diameter portion 3b is extended downward to form an extension cylinder 5a. A plurality of ribs 5b for defining the upper limit of the filter to be described later are provided on the upper inner surface of the extension cylinder .
[0017]
In the extension cylinder 5a, a filter 11 having an opening on the lower end surface of the cylinder portion, in which the upper end surface of the cylinder portion 12 is closed with a net 13 of about 100 mesh or more, is detachably fitted and cannot be pushed up. The lower end surface of the tube portion 12 of the filter and the lower end surface of the extension tube 5a may be provided on the same plane.
[0018]
Further, on the inner surface of the cylindrical portion 12 of the filter, the small cylinder 23 of the suction pipe holding cylinder 21 provided with the outward flange 24 attached to the lower end of the small cylinder 23 is connected to the upper surface of the outward flange 24 below the extension cylinder. The end surface and the lower end surface of the cylindrical portion 12 of the filter are fitted together. The fitting is also a detachable solid fit, but it is desirable that the frictional resistance due to the fitting of the small cylinder 23 with respect to the tubular part 12 of the filter is larger than the frictional resistance due to the fitting of the tubular part of the filter with respect to the extension cylinder 5a. An inward flange may be attached to the upper end of the small cylinder 23.
[0019]
The upper part of the suction pipe 31 is fitted into the small cylinder 23 of the suction pipe holding cylinder 21. Fitting deposition may performed to a degree impossible extraction, pulled strongly suction pipe 31 downward Then, first off filter 11 from the extension tube 5a, and then allows extracting the filter 11 from the suction pipe holding cylinder 21 upward It is good to form.
[0020]
FIG. 4 shows a configuration in which the vertical liquid jet pump 1 in the embodiment of FIG. 3 is replaced with a trigger type liquid jet pump as in the embodiment of FIG. 2, and the other parts are the same as those in FIG. Therefore, the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0021]
In each of the above embodiments, the mesh of the filter 11 is about 100 mesh or more. However, in the case of a foaming liquid jet pump, the mesh of the foaming net in the pump is usually about 200 mesh. In order to prevent clogging of the filter, the mesh of the filter should be 200 mesh or more, preferably 255 mesh or more.
[0022]
【The invention's effect】
In the present invention, the filter 11 having the net 13 of about 100 mesh or more is fitted to the lower part of the liquid suction cylinder portion 5 of the liquid ejection pump. After the liquid has run out, the pump attached to the container body can be reattached to another spare container body that does not have a pump and used as it is, or the empty container body can be refilled with liquid. Even if the pump is used as it is, minute floats or crystals contained in the liquid in the container body can enter the pump as they are, and the above filter can remove them. Failures due to accumulation can be eliminated. Further, the filter 11 is fitted to the lower part of the liquid suction cylinder part 5 of the liquid jet pump 1 and the suction cylinder part is usually much larger in diameter than the suction pipe. The contact area can be increased, and therefore, the fitting of them can be performed moderately, that is, detachable and easy to fix. In addition, the liquid suction tube portion and the filter tube portion are different from the suction pipe and are formed with high rigidity, so that the above-described fitting can be ensured. The net 13 is concealed in the suction pipe holding cylinder 21 or the extension cylinder 5a from the liquid suction cylinder portion 5. Therefore, even if the container body and the stored liquid are transparent, suspended matter or the like adhering to the net is present. It is not visible and the appearance can be improved.
[0024]
By forming as in claim 2, the length of the fitting portion between the liquid suction tube portion 5 and the tube portion of the filter can be made constant, so that proper fitting is facilitated.
[0025]
According to the third aspect of the present invention, it is possible to increase the cross-sectional area of the cylindrical hole of the cylindrical portion 12 of the filter compared to the cross-sectional area of the pipe hole of the suction pipe. Compared with the case where the filter cylinder is closed, the area of the net that closes the upper end surface of the filter cylinder portion can be increased, and the liquid suction through the net can be improved.
[0026]
According to the third aspect of the present invention, it is possible to pull out the tube portion 12 of the filter from the extension tube 5a by simply pulling down the suction pipe 31, and the filter 11 from the small tube 23 of the suction pipe holding tube. The filter net 13 can be easily cleaned.
[Brief description of the drawings]
FIG. 1 is a side view of a pump according to a first embodiment of the present invention, a part of which is shown in cross section.
FIG. 2 is a side view of the second embodiment, similar to FIG.
FIG. 3 is a side view of the third embodiment, similar to FIG.
FIG. 4 is a side view of the fourth embodiment, similar to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Liquid ejection pump 5 ... Liquid suction cylinder part
11 ... filter 13 ... net
21 ... Suction pipe holding cylinder 31 ... Suction pipe

Claims (3)

 A filter 11 is provided in which the lower end opening surface of the cylindrical portion 12 is closed with a net 13 of about 100 mesh or more, and the upper cylindrical portion of the filter is detachable to the lower portion of the liquid suction cylindrical portion 5 of the liquid jet pump 1. The upper part of the suction pipe holding cylinder 21 is detachably fixed to the lower outer surface of the cylindrical part 12 of the filter, and the upper cylindrical part is further fitted to the lower part of the holding cylinder. A liquid jet pump for mounting on a container, wherein the suction pipe 31 is suspended. An inward flange-like portion 14 is provided in the middle portion of the tubular portion 12 of the filter, the upper tubular portion of the flange-like portion is formed in the large-diameter portion 12a, and the lower tubular portion is formed in the small-diameter portion 12b. The lower end surface of the liquid suction tube portion 5 is placed on the upper surface of the portion 14, and the large diameter portion 12a is fitted to the lower outer surface of the liquid suction tube portion, and the upper portion of the suction pipe holding tube 21 is fitted to the outer surface of the small diameter portion 12b. The liquid jet pump for mounting a container body according to claim 1 , wherein the liquid jet pump is mounted on the container body. The lower end surface of the cylinder part which closes the upper end opening surface of the liquid jet pump 1 and the cylinder part 12 with a net 13 of about 100 mesh or more having the extension cylinder 5a provided by extending the peripheral wall of the liquid suction cylinder part 5 downward. It consists of a filter 11 having an opening and a suction pipe holding cylinder 21 having an outward flange 24 at the lower end of the small cylinder 23 and having the upper part fixed inside the small cylinder to suspend the suction pipe 31. The filter cylinder 12 is detachably fitted and cannot be pushed up, and the small pipe 23 of the suction pipe holding cylinder 21 can be forcibly pulled out into the lower part of the filter cylinder 12 In the liquid jet pump for mounting the container body in which the lower end surfaces of the tube portion 12 and the extension tube 5a of the filter are brought into contact with the upper surface of the outward flange 24 ,
The small tube 23 the frictional resistance during withdrawal, extension cylinder liquid container body attachment, characterized in that a larger than the frictional resistance during filter of the cylindrical portion 12 withdrawn from 5a the inner surface of the cylindrical portion 12 the inner surface of the filter Spout pump .

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