JPH0728060U - Dispensing pump for containers with deformable inner layer - Google Patents

Abstract

(57) [Summary] [Objective] To obtain a dispensing pump for a container having a deformable inner layer capable of almost completely dispensing the content liquid to the end. [Structure] A pump main body 2 and an introduction columnar body 3 attached to the pump main body. The introduction columnar body 3 is fitted with at least an outer peripheral surface of a suction cylinder 14 of a pumping pump main body 1. And the introduction column body main body 22, and the introduction column body main body 22 forms bending pieces of the same shape in point symmetry with respect to the axis of the introduction column body main body at the tips of the sides of the cross shape. It has a cross-sectional shape such as a swastika shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pouring pump for pouring a content liquid from a container having a deformable inner layer such as a laminated release bottle.

[0002]

[Prior art]

 Recently, shampoos, such as laminated release bottles, have a container body composed of at least two layers, an outer layer and an inner layer, in which the inner pressure of the container is reduced as the content liquid is poured out and only the inner layer shrinks. It has been proposed as a pouring container for highly viscous liquids such as a rinse and rinse. Shampoos and rinses are generally filled at a temperature higher than room temperature, but when the contents liquid is filled at a high temperature, the temperature inside the container is reduced and the container is dented, which may lower the commercial value. In order to prevent this, in the conventional single-layer container, the wall thickness of the container is increased to increase the strength, or the container is sealed after cooling, but in the former case, the material cost of the container is high. However, in the latter case, there was a problem that hinders high-speed filling. On the other hand, in the inner layer peeling bottle, only the inner layer is deformed by the reduced pressure, and the outer layer is not affected by the reduced pressure, so the thickness of the outer layer can be made thin to cope with high temperature filling, and the container cost can be reduced. And high-speed filling can be achieved.

Conventionally, as a pouring pump for pouring out a content liquid from a container having a deformable inner layer, the same type as a conventional one applied to a container in which the atmospheric pressure does not change due to pouring and the internal pressure does not change. This pump is used with the air intake hole simply closed and the suction pipe removed, or with an introduction column with a different cross-section installed as an alternative to the suction pipe.

However, the pouring of the content liquid from the container provided with the deformable inner layer is more difficult than the pouring from the container in which the internal pressure does not change, particularly when the content liquid has a high viscosity. There was a problem in that it was bad and the remaining amount was large. The cause is that when the remaining amount of the content liquid becomes small, the inner layer is unevenly attached to the suction port or the introduction column of the pump and blocks the suction port or liquid passage to obstruct the suction of the liquid. The contraction becomes non-uniform, and the residual liquid sealing part in which the conduction with the suction port of the pump is partly cut off occurs in the inner layer, and the content liquid cannot be poured out to the end. It is in.

[0005]

[Problems to be solved by the device]

 The present invention is intended to solve the above-mentioned problems of the conventional pouring pump for pouring the content liquid from the container having the deformable inner layer, and the content liquid is almost completely completed. An object of the present invention is to provide a pouring pump for a container having a deformable inner layer capable of pouring and dramatically reducing the residual liquid rate.

[0006]

[Means for Solving the Problems]

 A pouring pump for a container having a deformable inner layer according to the present invention, which solves the above-mentioned problems, comprises a pump body and an introducing column mounted on the pump body, and the introducing column is at least the pouring column. A suction cylinder fitting portion that fits on the outer peripheral surface of the suction cylinder of the pump body, and an introduction columnar body portion that is integrally molded at the lower end of the suction cylinder fitting portion. It has a cross-sectional shape in which bent pieces of the same shape are formed point-symmetrically with respect to the axis of the introduction column body as a symmetry point at the tip of each side of the character.

Although various shapes can be adopted for the bending piece, the bending piece is formed by bending in the same direction at right angles from the tips of the sides of the cross, and the cross-sectional shape of the introduction columnar body is a swastika shape. Is desirable. The introduction pillar may be integrally formed with a cylinder fitting portion that fits on the outer peripheral surface of the cylinder of the pump body.

In addition, the suction cylinder fitting portion of the introduction column has a plurality of liquid flow-down grooves extending in the axial direction on the inner peripheral surface and the outer peripheral surface, and the shaft fitting on the outer peripheral surface of the cylinder fitting wall portion. It is desirable that a plurality of liquid flow-down grooves are formed in the direction, and the lower end of the groove is opened. Further, when the introduction column does not have the cylinder fitting wall portion, it is desirable to form a plurality of liquid flow-down grooves in the axial direction on the outer peripheral surface of the cylinder of the pump body.

[0009]

[Action]

 The inner layer gradually contracts as the liquid is poured from the container, but since the introduction column is inserted in the inner layer in the axial direction, the inner layer is regulated from contracting in the axial direction and is mainly oriented in the circumferential direction. It contracts and finally the inner layer adheres to the outer peripheral portion of the introduction column. At that time, a cross-section in which the introduction pillar extending in the bottom direction of the container forms bent pieces of the same shape in point symmetry with each other at the tip of each side of the cross, with the axis of the introduction pillar main body as the symmetry point. Since it is shaped to have a shape, the inner layer first comes into close contact with the outer periphery of the bent piece to secure the liquid passage between each side surface of the cross shape and the axial center of the introduction column body. Since it gradually collapses in a point-symmetrical manner around the center, the residual liquid reaches the liquid suction port through the passage and is sucked up. Therefore, it is possible to prevent the residual liquid from being partially generated in the bag due to the non-uniform contraction of the inner layer, which may interrupt the conduction with the liquid suction port, and to almost entirely dispense the content liquid. Yes, the residual liquid ratio is very low compared to the conventional one.

On the other hand, by forming the liquid flow-down groove on the outer peripheral surface of the cylinder fitting portion of the introducing column, a liquid flow-down passage is secured between the liquid guiding groove and the inner layer which is in close contact with the outer peripheral surface of the cylinder fitting portion. The liquid adhering to and remaining on the inner surface of the side layer is collected in the liquid flow-down groove by the suction action by the negative pressure, flows down, enters the inside of the suction cylinder fitting portion, and becomes the outer peripheral surface of the suction cylinder of the pump body. It flows down the inner peripheral surface liquid flow-down groove formed between them, reaches the lower end of the suction cylinder, and is sucked up. Similarly, on the outer peripheral surface of the suction cylinder fitting part, similarly, even if the inner layer is in close contact with the inner layer, the outer peripheral surface liquid flow-down groove is secured and adheres to and remains on the inner surface of the bag inner layer. The existing liquid droplets are sucked into the pump body through the liquid suction port at the lower end through the groove.

By forming the liquid flow-down groove in the outer wall of the cylinder of the pump body, the same effect can be obtained even if the cylinder fitting portion having the above-mentioned configuration is not provided in the introduction column.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a pouring pump according to an embodiment of the present invention, and FIG. 2 shows a state of being attached to a laminated peeling bottle 35 having a deformable inner layer 36.

The pouring pump 1 of the present embodiment is composed of a pump body 2 and an introducing column 3. As shown in FIG. 2, the pump body 2 has a structure substantially similar to that of a conventional pouring pump, and a piston 6 is displaceably fitted in the cylinder 5 on an outer peripheral surface thereof so that a liquid storage chamber 8 is formed inside. The stem 7 is connected to the press head 9, and the press head 9 is moved up and down to alternately actuate the suction valve 10 and the discharge valve 11 so that the liquid is sucked into the cylinder and discharged from the spout 12. It is a thing.

The structure of the introduction column 3 is characteristic of the present invention and is clearly shown in FIG. As shown in FIG. 3A, the introduction column of the present embodiment includes a cylinder fitting portion 20 that fits with the cylinder outer peripheral surface of the pump body 2, a valve seat of an intake valve formed on the lower portion of the cylinder. The suction cylinder fitting portion 21 is fitted to the outer peripheral portion of the suction cylinder 14 in which 13 is formed, and the introduction columnar main body portion 22.

The cylinder fitting portion 20 is formed in a cylindrical shape so that the inner peripheral surface is tightly fitted to the outer peripheral surface of the cylinder, but the outer peripheral surface has a linear liquid in the axial direction at equal intervals as shown in the figure. A flow-down groove 23 is formed, and a lower end portion of the liquid flow-down groove is opened so as to be electrically connected to the inner surface. The liquid flowing along the liquid flow-down groove 23 is transferred from the opening 24 to the suction cylinder fitting portion 21. It can flow into the inner circumference.

As shown in FIG. 3D, the suction cylinder fitting portion 21 has a zigzag cylindrical peripheral surface and an inner peripheral surface of the suction cylinder 14 of the pump body. A plurality of fitting circular arc surfaces 25 to be fitted to the outer peripheral surface are arranged at equal intervals (four in the illustrated embodiment), and a large diameter circular arc surface is formed between them to form the inner peripheral surface liquid flow-down groove 26. ing. The outer peripheral surface of the fitting circular arc surface 25 is recessed from the outer peripheral wall 27 of the inner peripheral surface liquid flow-down groove 26 to form an outer peripheral surface liquid flow-down groove 28. The lower end of the suction cylinder fitting portion 21 is a liquid suction port 29, and the lower end of the suction cylinder 14 of the pump body 2 is positioned.

The main body 22 of the introduction columnar body is formed to have a length that hangs down to the vicinity of the bottom of the container, and the cross-sectional shape of the cross-shaped columnar body 30 has a right angle at the tip of each side as shown in FIG. The bent piece 31 is bent in one direction to form a bent piece 31 having the same shape, and is formed into a swastika shape. Only the upper end of the bent 31 is integrally formed so as to be connected to the lower end of the suction cylinder fitting portion 21. There is. The upper part of the cross-shaped column 30 is cut, and the opening is enlarged to widen the lower part of the liquid suction port 29 so that the high-viscosity liquid can be easily sucked up.

The pouring pump of this embodiment is configured as described above, and is used with the introduction column 3 fitted to the cylinder outer peripheral portion of the pump body 2 as shown in FIGS. 1 and 2. . When pouring a high-viscosity liquid such as shampoo from the laminated peeling bottle by the pouring pump, when the pressing head 9 is pressed downward and then the pressure is released, the inside of the cylinder becomes negative pressure as the piston rises. The liquid in the container passes through the liquid suction port 29 (FIG. 3) of the introduction column 3 and is sucked into the cylinder from the liquid suction cylinder 14 of the pump body 1 through the suction valve 10. Since the introduction of air into the bottle is blocked, the liquid is sucked from the bottle into the storage chamber 8 of the pump body, and the inside of the bottle becomes a negative pressure due to the sucked volume. Inner layer 36 contracts.

In the introduction columnar body 3 of the present embodiment, since the cross-sectional shape of the introduction columnar body main body extending in the bottom direction of the container is formed in a swastika shape, the tips of the bending pieces 31 are concentric circles. The inner layer 36 is obstructed by the bending piece 31 and first comes into close contact with the outer surface of the bending piece 31 and then is crushed in a point-symmetrical manner around the axis of the introduction column body main body so that the inner layer 36 and the surface of the cross column body 30 are separated from each other. A liquid introduction path is secured, and the residual liquid reaches the liquid suction port through the introduction path and is sucked up.

In the present embodiment, the bending piece 31 of the introduction column body 22 is bent in the same direction from the tip of the cross column 30 to form a swastika shape. According to this, it becomes easy to perform the die cutting when integrally molding the introduction columnar body with plastic, the structure of the die becomes simple, and the manufacturing cost can be reduced.

On the other hand, since the liquid flow-down groove 23 is formed on the outer peripheral surface of the cylinder fitting portion 20 of the introduction columnar body 3 as shown in FIG. 3, a liquid flow-down passage is secured between itself and the inner layer 36. The liquid remaining attached to the inner surface of the inner layer is also collected and flows down in the liquid flow-down groove by the suction action by the negative pressure, enters the inside of the suction cylinder fitting portion 21 through the opening 24, and enters the suction cylinder 14 of the pump body. It flows down the inner peripheral surface liquid flow-down groove 26 formed between the inner peripheral surface and the outer peripheral surface thereof, reaches the lower end of the suction cylinder 14, and is sucked up. Similarly, on the outer peripheral surface of the suction cylinder fitting portion 21, an outer peripheral surface liquid flow-down groove 28 is secured between the inner layer and the inner layer even if the inner layer is in close contact, and the liquid suction port 29 at the lower end thereof is passed through the groove. And is sucked up into the pump body.

As described above, according to this embodiment, the introduction column extends to the vicinity of the substantially bottom of the laminated release bottle, and when the liquid disappears, the inner layer uniformly adheres to the outer periphery of the introduction column. , Since the connection with the liquid suction port of the pump body is secured, it is possible to suck up almost completely to the end, and the remaining liquid is much smaller than before, and it is economical. Further, in this embodiment, since the introduction column is fitted to the cylinder outer peripheral portion of the pump body, the liquid adhering to the inner surface upper part of the inner layer can be sucked and poured out, The amount of residual liquid in the bag can be extremely reduced.

FIGS. 4 to 6 show another embodiment of the present invention. In the pouring pump 49 of this embodiment, the introduction column 50 has no cylinder fitting portion as compared with the above-mentioned embodiment, The pump main body 40 includes a suction cylinder fitting portion 51 that fits into a suction cylinder 41, and an introduction column body portion 52 that is integrally formed at the lower end of the suction cylinder fitting portion.

Since the cross-sectional shapes of the suction cylinder fitting portion 51 and the introduction columnar main body portion 52 are the same as those in the above-described embodiment, the same portions are designated by the same reference numerals and detailed description thereof will be omitted. . In the present embodiment, instead of providing the cylinder fitting portion on the introduction column body 50, on the outer peripheral surface of the cylinder 42 of the pump body 40, similarly to the outer peripheral surface of the cylinder fitting portion 21 of the introduction column body of the above-described embodiment. The liquid flow-down groove 43 is formed.

According to the present embodiment, with the above-described structure, the inner layer upper portion that adheres to the outer peripheral surface of the cylinder 42 is provided in the same manner as in the above-described embodiment without providing the introduction column with the cylinder fitting portion. Can also be efficiently collected and poured out. Further, in this embodiment, the material can be saved and the cost can be reduced because the introduction pillar does not have the cylinder fitting portion.

In each of the above embodiments, the cross-sectional shape of the main body of the introducing column is formed in a swastika shape, but the tip of each side of the dodecagon has the same shape point-symmetrically with respect to the axis of the introducing column. The bent piece 55 is not limited to the swastika shape, and the bent piece 55 may be formed by projecting at right angles to both sides from the end of each side of the cross pillar 30 as shown in FIG. 7A. Alternatively, the bending piece 57 may be formed in a curved shape so as to be positioned concentrically as shown in FIG.

[0027]

[Effect of device]

 The dispensing pump for a container having the deformable inner layer of the present invention has the following special effects. The introduction columnar extending toward the bottom of the container collapses uniformly and concentrically around the axis of the main body of the introduction column while ensuring a liquid passage between it and the surface of the cross column, so it is almost complete until the end. The residual liquid ratio can be significantly reduced compared to the conventional method.

Further, by forming the liquid flow-down groove on the outer peripheral surface of the cylinder fitting portion of the introduction column and by forming the liquid flow-down groove on the outer peripheral surface and the inner peripheral surface of the suction cylinder fitting portion, A liquid flow-down passage is secured between the binder fitting part and the inner layer that is in close contact with the outer peripheral surface of the suction cylinder fitting part, and the droplets remaining above the liquid suction port can be efficiently collected and poured out. It

By forming the liquid flow-down groove on the outer wall of the cylinder of the pump body, the same effect can be achieved without providing the cylinder fitting portion on the introduction column, and the material cost of the introduction column can be saved.

[Brief description of drawings]

FIG. 1 is a front view of a pouring pump according to an embodiment of the present invention when mounted on a delamination bottle.

FIG. 2 is a partial sectional front view of a pouring pump according to an embodiment of the present invention.

FIG. 3 (a) is a front view of an introduction column of a pouring pump according to an embodiment of the present invention, (b) is a plan view, (c) is a sectional view taken along the line AA, and (d) is B. -B cross-section arrow view, (e) is a bottom view.

FIG. 4 is a front view of a dispensing pump according to another embodiment of the present invention.

5A is a partial cross-sectional front view of the pump body, FIG.
FIG. 4 is a bottom view of the suction cylinder.

6A is a front view of the introduction column, FIG. 6B is a plan view thereof, and FIG. 6C is a bottom view thereof.

7 (a) and 7 (b) are cross-sectional views of an introducing column body main portion of another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Discharge pump 2,40 Pump body 3 Introduction column body 5,42 Cylinder 6 Piston 7 Stem 14,41 Suction cylinder 20 Cylinder fitting part 21,51 Suction tube fitting part 22,52 Introduction column body part 23,26 , 28 Liquid flow-down groove 30 Cruciform body 31, 55, 57 Bending piece 35 Laminating peeling bottle 36 Inner layer

Claims (6)

[Scope of utility model registration request] 1. A pouring pump for a container having a deformable inner layer, comprising a pump body and an introduction columnar body attached to the pump body, wherein the introduction columnar body is at least the pouring pump. The main body includes a suction cylinder fitting portion that fits on the outer peripheral surface of the suction cylinder, and an introduction columnar body portion that is integrally formed at the lower end of the suction cylinder fitting portion. A container for a container having a deformable inner layer, characterized in that it has a cross-sectional shape in which bent pieces of the same shape are formed point-symmetrically with respect to each other at the tip of each side with the axis of the introduction columnar body as the symmetry point. Delivery pump. 2. The pour-out according to claim 1, wherein the bent piece is formed by being bent in the same direction at right angles from the ends of the sides of the cross, and the cross-sectional shape of the introduction columnar main body is a swastika shape. pump. 3. The pouring pump according to claim 1, wherein the introduction column has a cylinder fitting portion that fits on a cylinder outer peripheral surface of the pump body. 4. The pouring pump according to claim 1, 2 or 3, wherein a plurality of liquid flow-down grooves extending in the axial direction are formed on the inner peripheral surface and the outer peripheral surface of the suction cylinder fitting portion of the introduction column. 5. The pouring pump according to claim 3, wherein a plurality of liquid flow-down grooves are formed in the outer peripheral surface of the cylinder fitting wall in the axial direction, and the lower end of the grooves is opened. 6. The pouring pump according to claim 1, 2 or 4, wherein a plurality of liquid flow-down grooves are axially formed on the outer peripheral surface of the cylinder of the pump body.