JPH08301332A - Liquid spouting pump - Google Patents

Abstract

PURPOSE: To provide an excellent liquid spouting pump which can smoothly, certainly spout a liquid without an interference of a liquid container bag in sucking the liquid into a cylinder and can discharge the content liquid almost completely. CONSTITUTION: When a liquid spouting pump is used, it is mounted on a container body 3 having an liquid-filled pouch 2 which is sealed with content liquid inside and shrinks with inside negative pressures produced as the content liquid is taken out. A cylinder 4 hanging down in the container body 3 has a suction port 15 at the center of a bottom wall 14 of the cylinder 4 and a fitting pipe 16 protrudes downward from the periphery of the suction port 15. The upper end of a specially-shaped pipe 6 having a special constitution or a spacer having a special constitution is firmly fitted in the fitting pipe 16 to prevent the suction port 15 from being blocked by the liquid-filled pouch 2.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a liquid pouring pump,
Specifically, the present invention relates to a liquid pouring pump that is used by mounting it on a container body having a flexible liquid filling bag inside.

[0002]

2. Description of the Related Art Generally, as a liquid pouring pump for pouring a fixed amount of a highly viscous or anaerobic stored liquid,
Some of them are used by being attached to a container body in which a flexible liquid filling bag is installed. These pumps have a cylinder that hangs above the container body and an annular piston that slidably fits inside the cylinder in the lower part, and the pressing-down head at the upper end protrudes above the container body to urge it upward. And a vertically movable member provided so as to be vertically movable in a state.

Further, a suction port is formed in the bottom wall of the cylinder, and a cylindrical suction pipe having an upper end fitted to a fitting cylinder portion hung from the back surface of the bottom wall around the suction port is filled with a liquid filling bag. It hangs on the inner bottom.

Then, by vertically moving the vertical moving member, the liquid in the container is sucked up into the cylinder through the suction opening from the lower end opening of the pipe, and the liquid in the cylinder is poured out through the pouring outlet of the head. It is configured like this.

[0005]

However, in the above-mentioned conventional one, there is no problem at the beginning of use,
When the amount of stored liquid decreases, the liquid-filled bag easily comes into close contact with the suction pipe or the like, the lower end opening of the suction pipe is blocked, and the stored liquid cannot be sucked. For this reason,
There is a problem that the pump cannot be completely restored and the stored liquid remains.

Further, the liquid-filled bag adheres tightly to the suction pipe or the like to prevent the stored liquid in the upper part of the liquid-filled bag from flowing down to the opening of the lower end of the suction pipe, and at the same time, the bottom of the liquid-filled bag is focused on. By squeezing, the stored liquid will be accumulated in the upper part. Thus, it is uneconomical for the stored liquid to remain on the upper part of the liquid filling bag.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and the liquid filling bag can smoothly and surely pour out the liquid without obstructing the suction of the stored liquid into the cylinder. At the same time, it proposes a liquid pouring pump capable of pouring out substantially the entire amount of the stored liquid and being excellent in productivity and inexpensive to manufacture.

[0008]

In order to solve the above problems, the pump according to the first aspect of the present invention has a container having a liquid filling bag 2 for sealing the stored liquid, which contracts due to internal negative pressure caused by taking out the stored liquid. A pump used by being attached to a body 3, which has a cylinder 4 suspended above the container body and an annular piston 22 slidably fitted in the cylinder in the lower portion, and pushes down the upper end portion. The head 23 is provided with an up-and-down moving member 5 protruding upward from the container body so as to be vertically movable under an upwardly biased state. By vertically moving the member 5, the liquid in the container body is sucked up into the cylinder 4 and the head 23 In a liquid pouring pump configured to pour out from a pouring port, a fitting tubular portion 16 is hung vertically downward from a peripheral edge of a suction port 15 bored in the center of the bottom wall 14 of the cylinder, and inside the tubular portion 16. The upper end is fitted and fixed on the lower end and the lower end is filled with the above liquid. (2) A deformed pipe 6 is provided which is vertically hung in the lower part of the inner wall and extends in the circumferential direction from the upper end of the outer peripheral wall of the cylinder wall to the lower end thereof. Is configured to communicate with the suction port 15 as a liquid pouring pump.

Further, in the pump of the second aspect of the invention, the upper end opening of each concave groove 30 is sucked into the suction port by fitting and fixing the upper end of the deformed pipe 6 with a gap from the lower surface of the cylinder bottom wall 14 in the fitting cylindrical portion. 15. The liquid pouring pump according to claim 1, which is in communication with 15.

Still further, in the pump of the third aspect of the present invention, the through hole 31 is bored in the cylindrical wall of the deformed pipe 6 as described above.
It is configured as the liquid pouring pump described in any one of 1.

According to a fourth aspect of the present invention, there is provided the above-mentioned through hole.
4. The liquid pouring pump according to claim 3, wherein 31 is a through hole 31a which is formed by penetrating the protruding wall 29 of the protruding wall 29 through the protruding wall 29.

A pump according to a fifth aspect of the present invention is a pump used by being attached to a container body 3 having a liquid-filled bag 2 for sealing a stored liquid, which contracts due to internal negative pressure caused by taking out the stored liquid. And has a cylinder 4 hung above the container body and an annular piston 22 slidably fitted in the cylinder at the bottom, and a push-down head 23 at the upper end projects upward from the container body. And a vertically moving member 5 provided so as to be vertically movable in a biased state, and the vertical movement of the member 5 sucks up the liquid in the container body into the cylinder 4 and heads.
In a liquid pouring pump constructed so as to pour from 23 pouring ports, a suction port 15 formed in the center of the bottom wall 14 of the cylinder
The fitting tubular portion 16 is vertically provided below the peripheral edge, and below the fitting portion 36 at the upper end fitted in the tubular portion 16, a gap holding portion 37 that obstructs the closing of the suction port by the liquid filling bag is provided. A gap holding body which is extended and has the lower end of the holding portion 37 hanging downward from the inside of the liquid filling bag 2 and a plurality of liquid-flowing concave grooves 38 provided vertically on the outer periphery of the fitting portion 36 in the circumferential direction. 39 is provided, and the above fitting cylinder part
A liquid pouring pump characterized in that the upper end opening of each groove 38 is communicated with the suction port 15 by fitting and fixing the upper end of the fitting portion 36 with a gap between the lower surface of the cylinder bottom wall 14 and the lower surface of the cylinder bottom wall 14. Configured as.

[0013]

The liquid in the liquid filling bag 2 passes through the concave grooves 30 even if the liquid in the liquid filling bag 2 is deflated and the lower end opening of the deformed pipe 6 is closed. It is introduced into the cylinder 4 from the upper end through the suction port 15.

In the pump according to the second aspect of the present invention, the upper surface portion of the deformed pipe 6 which is closed by the lower surface of the cylinder bottom wall 14 in the fitting tubular portion 16 can be reduced, and the upper surface of the pipe 6 is the bottom wall 14.
The opening area of the upper surface of the deformed pipe can be increased as compared with the case of being in contact with the lower surface.

According to the pumps of the third and fourth inventions,
Even if the lower end opening of the deformed pipe 6 is closed by the liquid filling bag 2, in addition to the introduction of the liquid into the cylinder 4 from the above-mentioned concave grooves 30, the pipes are opened from the through holes 31 (31a). Liquid is introduced into the cylinder 4 through the inside.

In the pump according to the fifth aspect of the invention, the gap retainer 39
The upper surface of the fitting portion 36 does not narrow the suction port 15.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. The liquid pouring pump 1 of the present invention comprises a container body 3 having a liquid filling bag 2 inside.
The cylinder 4, the vertical movement member 5, and the deformed pipe 6 are provided.

The container body 3 includes a tubular body portion 7 and a mouth / neck portion 8 from an upper edge thereof.
And a screw thread is provided around the outer periphery of the mouth / neck portion 8. The liquid filling bag 2 is removably laminated over the entire inner surface of the container body from the body portion 7 to the mouth / neck portion 8 and the upper surface of the mouth / neck portion. Further, a through hole 9 is formed in the lower portion of the mouth / neck portion 8 so that outside air can be introduced between the inner surface of the container body 3 and the liquid-filled bag 2 separated from the inner surface.

In the present invention, the liquid filling bag 2 is not limited to the releasable laminated body on the inner surface of the container as described above, but may be simply inserted into the container body. Any form can be adopted as long as it is in the form of a liquid-filled bag used for the container.

The upper end of the cylinder 4 is fixed to the neck of the container body by a mounting cap 10 and the lower end of the cylinder 4 is suspended above the upper part of the container body. In the present embodiment, the flange 12 placed on the upper surface of the container neck 8 through the packing 11.
And a suction port 15 is formed at the center of the bottom wall 14 extending from the lower edge of the peripheral wall 13, and the fitting cylindrical portion 16 is located below the bottom wall lower surface around the suction port 15. Are hung vertically.

Also, the mounting cap 10 is a container body neck 8
An inward flange-shaped top wall 18 is extended from the upper edge of the peripheral wall 17 to be screwed to the outer periphery, and a short cylinder 19 is hung downward from the peripheral edge of the window hole at the center of the top wall, and further from the top surface of the top wall 18. Is the vertical movement member 5
A guide tube 20 for guiding the up and down movement of is installed upright.

Then, the flange 12 is fitted between the peripheral wall 17 at the bottom of the mounting cap top wall 18 and the short cylinder 19 to fix the cylinder 4 to the mounting cap 10, and the mounting cap peripheral wall 17 is screwed onto the outer periphery of the mouth / neck portion 8. By attaching it, the flange 12 of the cylinder is pressed against the upper surface of the neck 8 of the container body through the packing 11 to fix the cylinder to the container body.

A suction valve 21 is provided in the cylinder 4. This suction valve 21 integrally connects a ring-shaped frame portion 21a fitted to the lower end inside the cylinder peripheral wall 13 and a valve plate 21b closing the upper surface of the suction port 15 by a plurality of elastic plate portions 21c in the circumferential direction. This is a well-known mechanism configured by doing so.

The up-and-down moving member 5 has an annular piston 22 slidably fitted in the cylinder 4 at its lower portion, and a pushing-down head 23 at the upper end thereof is projected upward from the container body to be urged upward. It is provided so that it can move up and down.

In this embodiment, an annular piston having an H-shaped cross section in which the outer peripheral edge is fitted to the inner peripheral surface of the cylinder 4 so as to be vertically slidable.
The inner peripheral edge of 22 is fitted into the lower part of the outer periphery of a stem 24 inserted in the center of the cylinder 4 so as to be vertically movable. 23 is fitted and fixed, the upper end inside the stem 24 and the inside of the nozzle 25 are communicated, and by the coil spring 26 interposed between the back surface of the top wall of the pressing head 23 and the top surface of the top wall of the mounting cap. Always urged upward. Further, the peripheral wall of the head 23 is fitted on the outer periphery of the guide cylinder 20 so as to be vertically movable and incapable of slipping out.

A through hole 27 is formed in the stem 24 at the portion where the annular piston 22 is fitted, and the lower end of the inner circumference of the annular piston 22 is pressed against the upper surface of the flange portion 28 projecting from the lower portion of the through hole 27. At this time, the through hole 27 is closed to block the inside of the cylinder 4 from the inside of the stem 24, and the annular piston 22 is fixed to the stem 24.
It is configured so that the inside of the cylinder 4 and the inside of the stem 24 communicate with each other through the through hole 27 when the cylinder 24 is relatively elevated.

When the head 23 is pushed down, the inside of the cylinder 4 is pressurized and the annular piston 22 is moved to the stem 24.
The liquid is pushed up relative to the cylinder 4, and the pressurized liquid is discharged from the cylinder 4 through the through hole 27 and the stem 24 to the outside from the spout at the tip of the nozzle 25. On the other hand, when the up-and-down moving member 5 rises, the inside of the cylinder 4 becomes negative pressure, the annular piston 22 relatively descends to close the through hole 27, and the suction valve 21 opens to let the liquid in the container into the cylinder 4. Introduce.

In the present invention, the concrete structure of the cylinder, the vertical moving member, etc. is not limited to that of the above embodiment, but any pump mechanism used in the conventional pump of this kind can be adopted.

The deformed pipe 6 is formed by vertically arranging a plurality of projections 29 extending in the circumferential direction from the upper end to the lower end of the outer peripheral surface of a cylindrical cylinder wall, and the outer peripheral surface of the upper end is fitted and fixed in the fitting cylindrical portion 16. The lower end is made to hang down inside the liquid filling bag 2. Further, the upper ends of the concave grooves 30 formed between the protrusions and the suction port 15 of the cylinder 4 are made to communicate with each other to be fitted in the fitting cylindrical portion. The upper end of each groove 30 is communicated with the suction port 15 by forming the outer diameter of the cylindrical wall of the deformed pipe 6 to be smaller than the inner diameter of the suction port 15.

The number of the protrusions 29 may be plural, but it is preferable that the number is three or more in order to surely and stably fit and fix the fitting tubular portion 16. In addition, the cross-sectional shape of the ridge 29 is also
As shown in FIG. 2, the cross section is not limited to a general rectangular cross section, but may be a T cross section as shown in FIG. 3 or another cross section. .

As shown in FIG. 4, the deformed pipe 6 has a plurality of ridges 29.
A plurality of through holes 31 may be formed in the cylindrical wall between them, or as shown in FIG. It may be one in which 31a is provided. The through holes 31 and 31a may be provided at only one place.

According to a second aspect of the present invention, in the pump according to the first aspect of the present invention, the upper end of the deformed pipe 6 is fitted and fixed with a gap from the lower surface of the cylinder bottom wall 14 in the fitting tubular portion 16. Thus, the upper end opening of each groove 30 is configured to communicate with the suction port 15.

For example, as shown in FIG. 6, a downward facing step portion 32 is provided around the inner periphery of the fitting tubular portion 16, and the protrusions 29 are provided on the lower surface of the step portion 32.
The deformed pipe 6 is fitted and fixed in a state where the peripheral portion of the upper surface is in contact.

Further, as shown in FIG. 7, the deformed pipe 6 is fitted so that the peripheral edges of the upper surfaces of the protrusions 29 are in contact with the lower surfaces of the ribs 33 provided in the upper end of the inner surface of the fitting tubular portion 16 in the circumferential direction. It may be fixed, or as shown in FIG. 8, a large number of ribs 35 having downwardly facing step portions 34 are provided on the inner surface of the upper portion in the circumferential direction, and the lower surface of the downwardly facing step portion 34 of each rib 35 is provided with the upper peripheral edge portion of each protrusion 29. The deformed pipe 6 may be fitted and fixed in the abutting state.

In the case of the fitting cylinder portion 16 having ribs projecting as shown in FIGS. 7 and 8, the protrusion 29 of the deformed pipe 6 is arranged as shown in FIG.
It is necessary to have a T-shaped cross section as shown in FIG.

Further, in the pump of the fifth aspect of the invention, downward from the fitting portion 36 at the upper end fitted in the fitting tubular portion 16,
A gap holding portion 37 that obstructs the closing of the suction port by the liquid filling bag is extended, and the lower end of the holding portion 37 is hung down inside the liquid filling bag 2 and the liquid is circulated on the outer periphery of the fitting portion 36. Providing a gap holder 39 formed by vertically arranging a plurality of concave grooves 38 in the circumferential direction,
The upper end opening of each concave groove 38 is communicated with the suction port 15 by fitting and fixing the upper end of the fitting portion 36 with a gap from the lower surface of the cylinder bottom wall 14 in the fitting cylindrical portion 16.

Other configurations are similar to those of the pump shown in FIG. In this embodiment, the gap retainer 39 has a fitting portion 36 having a cross-shaped cross section as shown in FIGS. 9 and 10, and a gap holding portion 37 is hung from the lower surface of the fitting portion 36. I have set up. The gap retaining portion 37 integrally connects the lower surfaces of the two support plate portions 40 that hang down in parallel to the upper surface of the donut plate-shaped portion 41, and the arc plate that extends between the support plate portions 40 and projects forward and backward. Plural shaped portions 42 are provided. Further, the upper end of the fitting portion 36 is brought into contact with and locked to the lower surface of the downward step portion 32 provided in the fitting cylindrical portion 16, and a gap is provided above it.

The gap retainer 39 is not limited to the one in the above embodiment, but the gap retainer below the fitting portion at the upper end fitted in the fitting tubular portion 16 prevents the suction port from being blocked by the liquid filling bag. It suffices that the portion be extended, the lower end of the holding portion be hung in the lower portion of the liquid filling bag, and that a plurality of concave grooves for liquid flow be vertically provided in the outer circumference of the fitting portion in the circumferential direction.

The above-mentioned members are formed mainly by using synthetic resin and, if necessary, by using elastomer, metal or the like.

[0040]

As described above, in the pump of the present invention, the fitting cylindrical portion is vertically provided below the peripheral edge of the suction port formed in the center of the bottom wall of the cylinder, and the outer peripheral surface of the upper end is fitted in the cylindrical portion. The lower end is hung down in the lower part of the liquid filling bag, and a deformed pipe is provided by vertically arranging a plurality of protrusions extending from the outer peripheral upper end to the lower end in the circumferential direction. Since the odd-shaped pipe is fitted and fixed in the fitting cylindrical portion by communicating with the suction port, even if the liquid-filled bag is deflated due to a decrease in liquid, it may block the lower-end opening of the odd-shaped pipe. In addition, since liquid is introduced into the cylinder from the upper end through each groove, smooth operation can be performed without malfunction of the vertical moving member, and almost the entire amount of liquid stored in the bag. Is something that can be poured out.

Further, since the deformed pipe has an extremely simple structure, it can be manufactured by changing the structure of a very small part of the conventional container of this kind, which is excellent in productivity and can be manufactured at low cost.

Further, in the pump of the second aspect of the present invention, the upper end of each irregular groove is communicated with the suction port by fitting and fixing the upper end of the deformed pipe in the fitting cylindrical portion with a gap from the lower surface of the cylinder bottom wall. Therefore, compared to the case where the upper end of the deformed pipe abuts on the lower surface of the cylinder bottom wall and the upper opening of the concave groove communicates with the suction port, the diameter of the suction port, the fitting cylinder portion, etc. is less restricted, and therefore the entire pump is Even if it is made small, it is possible to perform a smooth operation and efficiently dispense the stored liquid.

Further, in the pump of the third aspect of the present invention, since the through hole is bored in the cylindrical wall of the irregularly shaped pipe, the through hole is less likely to be blocked by the presence of each protrusion than the lower end opening of the pipe (plurality). It is more prominent if the holes are drilled), and as a result, in addition to the introduction of liquid into the cylinder from each groove described above, there is also the introduction of liquid from each through hole into the cylinder through the pipe, resulting in a smoother flow. The vertical movement member can be operated, and the stored liquid can be poured out with good pouring efficiency.

Further, in the pump according to the fourth aspect of the present invention, there is less room for the liquid filling bag to close the through hole as compared with the pump according to the third aspect of the present invention. Therefore, further smooth operation of the vertical movement member, It is possible to pour the stored liquid with a high pouring efficiency.

Also, the pump of the fifth aspect of the invention can smoothly operate without causing malfunction of the vertically moving member, and can substantially dispense the entire amount of the stored liquid. Even if the whole is formed small, these effects can be obtained.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of essential parts showing a modified pipe of the embodiment.

FIG. 3 is a perspective view of a main part showing another example of the deformed pipe.

FIG. 4 is a main part perspective view showing still another example of the deformed pipe.

FIG. 5 is a perspective view of a main part showing still another example of the deformed pipe.

FIG. 6 is a half sectional view showing an embodiment of the present invention.

FIG. 7 is a half cross-sectional view of a main part showing another embodiment of the second aspect of the present invention.

FIG. 8 is a half sectional view of a main portion showing still another embodiment of the present invention.

FIG. 9 is a half sectional view showing an embodiment of the present invention of claim 5;

FIG. 10 is a perspective view showing a gap holder according to the embodiment.

[Explanation of symbols]

2 ... Liquid filling bag, 3 ... Container body, 4 ... Cylinder, 5 ... Vertical movement member, 6 ... Deformed pipe, 14 ... Cylinder bottom wall, 15 ... Suction port, 16 ... Fitting cylinder part, 22 ... Annular piston, 23 ... Pressing down head, 29 ... Ridge, 30 ... Concave groove, 31,31a ... Perforation hole, 36 ... Fit part, 37 ... Gap holding part, 38 ... Groove groove, 39 ... Gap holder

Claims (5)

[Claims] 1. A pump, which is used by being attached to a container body 3 having a liquid filling bag 2 for sealing a stored liquid, which contracts due to internal negative pressure caused by taking out the stored liquid, and which is suspended above the container body. The cylinder 4 and the annular piston 22 slidably fitted in the cylinder are provided in the lower portion, and the push-down head 23 at the upper end is projected above the container body so that it can be moved up and down in a biased state. In the liquid pouring pump, which is provided with a vertically moving member 5 provided and is configured to suck up the liquid in the container body into the cylinder 4 by the vertical movement of the member 5 and to pour it out from the pouring port of the head 23, the cylinder The bottom wall 14
A fitting cylinder portion 16 is hung vertically downward from the periphery of the suction port 15 formed in the center, and an upper end portion is fitted and fixed in the cylinder portion 16 so that the lower end hangs down inside the liquid filling bag 2. The deformed pipe 6 is formed by vertically arranging a plurality of protrusions 29 extending from the upper end to the lower end of the outer periphery of the cylinder wall, and the concave grooves 30 formed between the protrusions 29.
A liquid pouring pump having an upper end opening communicating with the suction port 15. 2. The upper end opening of each groove 30 is made to communicate with the suction port 15 by fitting and fixing the upper end of the deformed pipe 6 with a gap from the lower surface of the cylinder bottom wall 14 in the fitting cylinder portion. 1. The liquid pouring pump according to 1. 3. The liquid pouring pump according to claim 1, wherein a through hole 31 is provided in the cylindrical wall of the odd-shaped pipe 6. 4. The liquid pouring pump according to claim 3, wherein the through hole 31 is a through hole 31a which is formed by penetrating the protruding wall 29 of the protruding wall 29 through the protruding wall 29. 5. A pump which is used by being attached to a container body 3 having a liquid filling bag 2 for sealing a stored liquid, which contracts due to internal negative pressure caused by taking out the stored liquid. The cylinder 4 and the annular piston 22 slidably fitted in the cylinder are provided in the lower portion, and the push-down head 23 at the upper end is projected above the container body so that it can be moved up and down in a biased state. In the liquid pouring pump, which is provided with a vertically moving member 5 provided and is configured to suck up the liquid in the container body into the cylinder 4 by the vertical movement of the member 5 and to pour it out from the pouring port of the head 23, the cylinder The bottom wall 14
A fitting cylinder part 16 is vertically provided below the periphery of the suction port 15 formed in the center, and the suction port is closed by a liquid filling bag below the fitting part 36 at the upper end fitted in the cylinder part 16. A gap holding portion 37 that interferes with the above is extended, the lower end of the holding portion 37 is hung down to the lower part inside the liquid filling bag 2, and a plurality of concave grooves 38 for liquid circulation are circumferentially provided on the outer periphery of the fitting portion 36. By providing a gap holding body 39 which is installed vertically, and by fitting and fixing the upper end of the fitting portion 36 with a gap from the lower surface of the cylinder bottom wall 14 in the fitting cylindrical portion 16, the upper end opening of each groove 38 is formed. A liquid pouring pump characterized by being communicated with the suction port 15.