JP2575410Y2 - Dispensing pump for containers with a deformable inner layer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispensing pump for dispensing a liquid content from a container having a deformable inner layer such as a laminated peeling bottle.

[0002]

2. Description of the Related Art In recent years, a container body such as a laminated peeling bottle has been composed of at least two layers, an outer layer and an inner layer. Such a container has been proposed as a container for pouring a highly viscous liquid such as shampoo and rinse. Shampoos, rinses, and the like are generally filled at a temperature higher than room temperature. However, when the content liquid is filled at a high temperature, the inside of the container is depressurized at room temperature, which may cause dents in the container and reduce the commercial value. To prevent this, in conventional single-layer containers, the 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 increases. In the latter case, there is a problem that high-speed filling is hindered. On the other hand, in the inner layer peeling bottle, only the inner layer is deformed by decompression, and the outer layer is not affected by the decompression.Thus, the outer layer can be made thinner to cope with high-temperature filling, reducing container costs and increasing speed. Filling can be achieved.

Conventionally, as a dispensing pump for discharging a content liquid from a container having a deformable inner layer, a type similar to the conventional type applied to a container in which the air flows in with the dispensing and the internal pressure does not change. Is used in a state where the air introduction hole is simply closed and the suction pipe is removed, or in a state where an introduction column having a cross section of a different shape is mounted as an alternative to the suction pipe.

[0004] However, when the content liquid is poured out of a container having a deformable inner layer, the dischargeability is poor, especially when the content liquid has a high viscosity, as compared with the case where the content liquid has a high internal viscosity. In addition, there is a problem in that the remaining amount increases. The cause is
When the remaining amount of the liquid is low, the inner layer is unevenly adhered to the suction port or introduction column of the pump, blocking the suction port and liquid passage, obstructing the suction of the liquid, and the shrinkage of the inner layer is uneven. In other words, a residual liquid sealing portion is formed in the inner layer in which conduction with the suction port of the pump is partially interrupted, so that the content liquid cannot be completely discharged.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems of a conventional dispensing pump for dispensing a content liquid from a container having a deformable inner layer, The liquid content can be almost completely poured out to the end,
It is an object of the present invention to provide a dispensing pump for a container having a deformable inner layer that can drastically reduce the residual liquid ratio.

[0006]

According to the present invention, a dispensing pump for a container having a deformable inner layer is provided.
A pump main body and an introduction column mounted on the pump main body, wherein the introduction column is at least fitted to an outer peripheral surface of a suction cylinder of the dispensing pump main body; The introduction column body is formed integrally at the lower end of the portion, and the introduction column body has the same shape point-symmetrically with respect to each other at the tip of each side of the cross with respect to the axis of the introduction column body. It has a configuration characterized by having a cross-sectional shape formed by forming a bent piece.

The bent piece may be of various shapes. The bent piece is formed by bending in the same direction at a right angle from the tip of each side of the cross, and the cross-sectional shape of the main body of the introduction pillar is in a swastika shape. It is desirable. The introduction column may integrally form a cylinder fitting portion that fits on the outer peripheral surface of the cylinder of the pump body.

The suction cylinder fitting portion of the introduction column has a plurality of axially extending liquid flow-down grooves formed on an inner peripheral surface and an outer peripheral surface thereof, and a shaft formed on an outer peripheral surface of a cylinder fitting wall portion. Preferably, a plurality of liquid flow-down grooves are formed in the direction, and the lower ends of the grooves are preferably open. When the introduction column does not have the cylinder fitting wall, 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]

The inner layer shrinks gradually as the liquid is poured from the container, but since the introduction column is inserted in the inner layer in the axial direction, the shrinkage in the axial direction is restricted and the inner layer mainly rotates. In the direction, and finally the inner layer comes into close contact with the outer peripheral portion of the introduction column. At this time, the introduction column extending in the bottom direction of the container has a cross-sectional shape formed by forming bent pieces of the same shape point-symmetrically with each other with the axis of the introduction column main body as a point of symmetry at the tip of each side of the cross. First, the inner layer comes into close contact with the outer peripheral portion of the bent piece, and gradually secures around the axis of the main body of the introduction column while securing a liquid passage between each side surface of the cross shape. Since the liquid is uniformly crushed point-symmetrically, the residual liquid reaches the liquid inlet through the passage and is sucked up. Therefore, due to uneven contraction of the inner layer, conduction with the liquid suction port is cut off, and it is possible to prevent the remaining liquid from being partially generated in the bag. The residual liquid ratio is very low as compared with 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 introduction column, a liquid flow-down passage is secured between the inner column and the inner layer which is in close contact with the outer peripheral surface of the cylinder fitting portion. The liquid remaining on the inner surface of the layer is collected in the liquid flow-down groove by the suction effect of the negative pressure, flows down, enters the inside of the suction cylinder fitting portion, and is interposed between the suction pipe and the outer peripheral surface of the suction cylinder of the pump body. Flows down the inner peripheral surface liquid flow-down groove formed by the above, reaches the lower end of the suction cylinder, and is sucked up. Similarly, even on the outer peripheral surface of the suction cylinder fitting portion, even if the inner layer is in close contact, a liquid flow-down groove on the outer peripheral surface is secured between the inner layer and the inner layer, and adheres and remains on the inner surface of the bag inner layer. The liquid droplet passing through the groove passes through the liquid suction port at the lower end thereof, and is sucked into the pump body.

By forming the liquid flow-down groove on the outer wall of the cylinder of the pump body, the same effect can be obtained without providing the above-described cylinder fitting portion on the introduction column.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a dispensing pump according to an embodiment of the present invention, and FIG. 2 shows a state in which the dispensing pump is mounted on a laminated peeling bottle 35 having a deformable inner layer 36.

The pouring pump 1 of this embodiment comprises a pump main body 2 and an introducing column 3. The pump body 2
As is clearly shown in FIG. 2, the structure is substantially the same as that of the conventional dispensing pump. A stem 7 in which a piston 6 is displaceably fitted to an outer peripheral surface in a cylinder 5 and a liquid storage chamber 8 is formed inside. Is connected to the pressing head 9, and the pressing head 9 is moved up and down so that the suction valve 10 and the discharge valve 11 are alternately operated to suck up the liquid into the cylinder and discharge it from the spout 12.

The structure of the introduction column 3 is a feature of the present invention and is clearly shown in FIG. As shown in FIG. 1A, the introduction column of this embodiment includes a cylinder fitting portion 20 that fits with the outer peripheral surface of the cylinder of the pump body 2 and a valve seat 13 of a suction valve formed at the lower portion of the cylinder and at the upper portion. A suction tube fitting portion 21 fitted to the outer peripheral portion of the suction tube 14 in which
And the introduction column main body 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. Groove 2
3 is formed, and the lower end of the liquid flow-down groove is opened so as to conduct to the inner surface, and the liquid flowing along the liquid flow-down groove 23 passes through the opening 24 to the inner peripheral portion of the suction cylinder fitting portion 21. To be able to flow into

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

The introduction column main body 22 is formed to have a length that hangs down to the vicinity of the bottom of the container. The cross-sectional shape of the cross column 30 as shown in FIG. It is bent in one direction to form a bent piece 31 of the same shape and is formed in a swastika shape, and only the upper end of the bent 31 is connected to the lower end of the suction tube fitting portion 21 to be integrally formed. . The upper part of the cruciform body 30 is cut, and the opening is enlarged so that the lower part of the liquid suction port 29 is widened so that a high-viscosity liquid is easily sucked up.

The pouring pump according to the present embodiment is configured as described above, and is used in a state where the introduction column 3 is fitted to the outer peripheral portion of the cylinder of the pump body 2 as shown in FIGS. . In order to dispense a high-viscosity liquid such as shampoo from the laminated peeling bottle by the dispense pump, press the pressing head 9 downward, and then release the pressing. Then, 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 via the suction valve 10. Since the introduction of the atmosphere into the bottle is shut off, the liquid is sucked up from the bottle into the storage chamber 8 of the pump body, so that the pressure in the bottle becomes negative pressure by the sucked volume, and The inner layer 36 contracts.

In the introduction column 3 of this embodiment, since the cross-sectional shape of the introduction column main body extending toward the bottom of the container is formed in a swastika shape, the tips of the bent pieces 31 are concentric. The inner layer 36 is disturbed by the bent piece 31 and first comes into close contact with the outer surface of the bent piece, and then collapses in a point-symmetrical manner about the axis of the main body of the introduction column body, and is interposed between the inner layer 36 and the surface of the cross column 30. A liquid introduction path is secured, and the residual liquid reaches the liquid suction port through the introduction path and is sucked up.

In this embodiment, the bent piece 31 of the introduction column body 22 is bent from the tip of the cross column 30 in the same direction.
Although it is formed in a swastika shape, it is easy to remove the mold when the introduction pillar is integrally molded with plastic, the structure of the mold is simplified, and the manufacturing cost is reduced. Can be planned.

On the other hand, a liquid flow-down groove 23 is formed on the outer peripheral surface of the cylinder fitting portion 20 of the introduction column 3 as shown in FIG. The liquid remaining on the inner surface of the inner layer is also collected in the liquid flow-down groove by the suction effect of the negative pressure and flows down, enters the inside of the suction tube fitting portion 21 through the opening 24, and enters the suction tube 14 of the pump body. The fluid flows down the inner peripheral surface liquid flow-down groove 26 formed between the inner peripheral surface and the lower peripheral surface of the suction cylinder 14 and is sucked up. Also,
Similarly, even on the outer peripheral surface of the suction tube fitting portion 21, even if the inner layer is in close contact with the inner layer, a liquid flow-down groove 28 on the outer peripheral surface is secured and reaches the liquid suction port 29 at the lower end through the groove. Is sucked into the pump body.

As described above, according to this embodiment, the introduction column extends to near the bottom of the laminated peeling bottle, and when the liquid is exhausted, the inner layer uniformly adheres to the outer peripheral portion of the introduction column.
Since continuity with the liquid suction port of the pump body is ensured, it is possible to suck up almost completely to the end, and the amount of residual liquid is extremely small as compared with the related art, so that it is economical. Further, in this embodiment, since the introduction column is provided so as to be fitted to the outer peripheral portion of the cylinder of the pump body, it is possible to suction and pour out the liquid adhering to the upper portion of the inner surface of the inner layer, The 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 embodiment, and A suction tube fitting portion 51 fitted to the suction tube 41 of the main body 40, and an introduction column main body portion 5 integrally formed at a lower end of the suction tube fitting portion.
And 2.

Suction cylinder fitting part 51 and introduction column body part 52
Is the same as that of the above-described embodiment, and therefore, the same portions are denoted by the same reference numerals as in the above-described embodiment, and detailed description thereof will be omitted. In the present embodiment, instead of providing the cylinder fitting portion on the introduction column 50, the outer peripheral surface of the cylinder 42 of the pump body 40 is formed on the outer peripheral surface of the cylinder fitting portion 21 of the introduction column of the above-described embodiment in the same manner. , And a liquid flow-down groove 43 is formed.

In this embodiment, as described above, the upper portion of the inner layer which adheres to the outer peripheral surface of the cylinder 42 can be provided in the same manner as in the previous embodiment, even if the introduction column does not have the cylinder fitting portion. Can be efficiently collected and discharged. In this embodiment, material can be saved and the cost can be reduced because the introduction column has no cylinder fitting portion.

In each of the above embodiments, the cross-sectional shape of the main body of the introduction column is formed in a swastika shape. The bent piece 55 is not limited to a swastika shape and may be formed by projecting at right angles to both sides from the tip of each side of the cross pillar 30 as shown in FIG. May be formed, and the bent piece 57 may be formed in a curved shape so as to be positioned concentrically as shown in FIG.

[0027]

Advantageous Effects of the Invention The dispensing pump for a container having a deformable inner layer according to the present invention has the following special effects. The introduction column that extends toward the bottom of the container gradually collapses concentrically and uniformly around the axis of the main body of the introduction column while securing a liquid passage between the surface of the cross column, and is almost completely completed. And the residual liquid ratio can be significantly reduced as compared with the conventional case.

Further, by forming a liquid flow-down groove on the outer peripheral surface of the cylinder fitting portion of the introduction column, and by forming a 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 fitting portion and the inner layer that is in close contact with the outer peripheral surface of the suction tube fitting portion, and the liquid droplets remaining above the liquid suction port can be efficiently collected and discharged.

By forming the liquid flow-down groove on the outer wall of the cylinder of the pump body, the same effect can be obtained even if the cylinder fitting portion is not provided on the introduction column, and the material cost of the introduction column can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a pouring pump according to an embodiment of the present invention is mounted on a lamination release bottle.

FIG. 2 is a partial cross-sectional front view of the dispensing pump according to the embodiment of the present invention.

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

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

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

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

FIGS. 7A and 7B are cross-sectional views of an introduction column main body according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Discharge pump 2, 40 Pump body 3 Introductory column 5, 42 Cylinder 6 Piston 7 Stem 14, 41 Suction cylinder 20 Cylinder fitting part 21, 51 Suction cylinder fitting part 22, 52 Introductory column body part 23, 26 , 28 liquid flow-down groove 30 cruciform body 31, 55, 57 bent piece 35 laminated peeling bottle 36 inner layer

Claims (6)

(57) [Scope of request for utility model registration] 1. A dispensing pump for a container having a deformable inner layer, comprising a pump body and an introduction column mounted on the pump body, wherein the introduction column is at least the dispensing pump. A suction tube fitting portion fitted to the outer peripheral surface of the suction tube of the main body, and an introduction column body portion integrally formed at a lower end of the suction tube fitting portion, wherein the introduction column body portion has a cross shape. A note for a container having a deformable inner layer, characterized in that it has a cross-sectional shape formed by forming bent pieces having the same shape symmetrically with respect to each other with respect to the axis of the introduction column main body at the tip of each side at the point of symmetry. Discharge pump. 2. The pouring according to claim 1, wherein the bent piece is formed by bending in the same direction at a right angle from the tip of each side of the cross, and the cross-sectional shape of the introduction column main body is swastika-shaped. pump. 3. The dispensing pump according to claim 1, wherein the introduction column has a cylinder fitting portion fitted to an outer peripheral surface of a cylinder of the pump body. 4. The dispensing pump according to claim 1, wherein a plurality of liquid flow-down grooves extending in an axial direction are formed on an inner peripheral surface and an outer peripheral surface of the suction cylinder fitting portion of the introduction column. 5. The dispensing 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 groove is open. 6. The dispensing pump according to claim 1, wherein a plurality of liquid flow-down grooves are formed in an axial direction on an outer peripheral surface of a cylinder of the pump body.