JPS62129168A - Apparatus for distributing creamy fluid - Google Patents

Abstract

PURPOSE:To enhance operability and durability and to prevent the dripping or leakage of a fluid, by providing a piston valve to a valve chamber sucking up a creamy fluid and further providing a valve mechanism to the upper part of the piston valve. CONSTITUTION:When a piston valve 5 is pushed down along with a nozzle body 6, a flap valve 4a is pressed to the bottom part of a valve chamber 3 to close a suction port 3c and the valve chamber 3 is pressurized. When the piston valve 5 is further pushed down and an emitting valve 8 is pushed up by a stem part 4b, a valve port 5f is opened and, as a result, the nozzle body 6 is communicated with the interior of the piston valve 5 and compressed air in the piston valve 5 is escaped to the outside and the creamy fluid already sucked in the valve chamber 3 in a pressurized state flows in the emitting flow passage of the nozzle body 6 to be emitted to the outside from an emitting port 6c. When the pressing force of the piston 5 is released to return said valve 5 to a stationary state, the valve chamber 3 is brought to a negative pressure state to open the flap valve 4a and the fluid is sucked in the valve chamber 3 to prepare for the next operation.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a device for dispensing creamy liquid from a container, particularly after dispensing the contents or even when the container is tilted or inverted. Concerning a leak-free dispensing device.

<Prior Art and its Problems> Various types of devices are known in the art for dispensing creamy or paste-like fluids sealed inside containers.

For example, a diaphragm pump chamber is formed at the end of the container, a suction port and a flap valve closing the suction port are provided at the bottom of the pump chamber, and a nozzle body is fitted to the top of the pump chamber to form the pump chamber. A dispensing device in which a flap valve is provided between the nozzle body and a dispensing device in which the flap valve or valve seat is integrally formed with a string-like body to reduce the number of parts is known. There is.

However, the conventional device described above changes the capacity of the pump chamber by deflecting the diaphragm pump and sucks up the contents into the pump chamber, and has limited durability and poor operability. Furthermore, since the conventional device uses a flap valve to open and close the discharge passage, there is a risk that the liquid inside the container may leak if the container is tilted or turned upside down. Further, even in the upright position, there are problems such as liquid remaining in the flow path after dispensing operation and causing liquid dripping.

Means for Solving the Problems The present invention solves the conventional problems by providing a piston valve in the valve chamber that sucks up creamy fluid and further attaching a valve mechanism to the upper part of the piston valve. This achieved a dispensing device with good performance and durability.

<Structure of the Invention> According to the present invention, the piston comprises a valve chamber provided in a container opening, a piston valve that slides in close contact with the inner wall of the valve chamber, and a nozzle body attached to the piston valve. The valve has a cylindrical shape and is mounted in the valve chamber so as to be able to move up and down by elastic means.
The inside thereof communicates with the valve chamber, and a lip portion is formed on the outer periphery of the lower part of the piston valve, and the lip portion is in close contact with the inside of the valve chamber;
A cream dispensing device is provided, characterized in that a valve mechanism is formed in the upper part of the piston valve to close a flow path leading to a discharge flow path in the upper part of the nozzle body.

A preferred embodiment of the invention is shown in FIG. A lid 2 is fitted into the northern opening of a container 1 for storing a creamy fluid, and a valve chamber 3 is formed inside the lid 2. The lid 2 has a cylindrical shape, and the groove 2a fits into the opening edge 1a of the container 1 via a sealing material 1b, and the cylindrical wall forms a valve chamber 3 inside the lid 2. 3a is inserted, and 1 of the wall 3a
A protrusion 3b is provided on a part of the outer periphery, while the lid 2
A groove 2b into which the projection 3b fits is formed in the inner wall of the wall 3a, and the projection 3b of the wall 3a fits into the IJ 2b, thereby fixing the wall 3a to the inside of the lid 2. . A suction port 3C is provided at the bottom of the wall 3a for communicating with the inside of the container and for sucking creamy fluid into the valve chamber 3, and a valve member 4 for opening and closing the suction port 3C is provided at the bottom of the wall 3a. 3a
It is located inside.

As shown in FIGS. 4(a) to 4(c), the valve member 4 consists of a valve body, that is, a flap valve 4a, which closes the suction port 3c, and a stem portion 4b that is erected inside the wall 3a. The stem portion 4b includes leg portions 4c that stand up on the sides of the suction port 3c, and the flap valve 4a is mounted between the leg portions 4c.

Next, the valve chamber 3 is provided with a piston valve 5 that slides in close contact with the inner periphery of the valve chamber wall.

The piston valve 5 has a lower end portion 5a having a larger diameter than a central portion 5b, and a nozzle body 6 is fitted to the upper end portion 5c. A lip portion 5d that tightly contacts the inner wall of the wall body 3 is formed on the outer periphery of the lower end i'ff15'a of the piston valve, and the piston valve 5 is further disposed between the lower end 5a and the stem portion 4b. A supporting spring 7 is interposed. still,
If the spring 7 is fitted onto the stem portion 4b or the leg portion jc of the valve body 4, and these are also used as a holder for the spring 7, assembly of the device will be facilitated. Further, a partition wall 5e is provided between the center portion and the upper end portion of the piston valve 5, and a valve hole 5f is bored in the partition wall 5e. On the other hand, the piston valve upper end 5c is open upward, and a discharge valve 8 is provided therein. As shown in FIG. 5, the discharge valve 8 includes a rib 8a that projects laterally, and an annular lip portion 8b that is located above the rib 8a and is in close contact with the inner peripheral surface of the upper end portion 5c. It is elastically supported by a spring 9 interposed between the upper part of the nozzle body 6 and the lip portion 8b so as to be vertically movable. On the other hand, a recess 6c for receiving the head of the discharge valve 8 is formed inside the upper part of the nozzle body 6 as shown in FIG. A space 6 that receives the discharge valve 8 pushed up by
a is formed.

A bottom 10 is provided at the bottom of the container 1 to prevent negative pressure associated with dispensing the contents.

The bottom part 10 may be of any type that is commonly used in containers of this type, and is not particularly limited. In fact, the bottom part 10 on the nut flow side has a lip part on its outer periphery that comes into close contact with the inner surface of the container, as shown in the figure. As the creamy fluid in the container is dispensed, it rises to prevent negative pressure inside the container.

When the dispensing device is in a stationary state as shown in FIG.
As shown in the figure, the rib 8a protrudes to the side of the discharge valve body, and the rib 8a abuts against the partition wall 5e.
Even if the valve hole 5f comes into contact with the lip 8, the valve hole 5f is not closed.
It communicates with the piston valve upper end 5C through the space between a. On the other hand, the lip portion 8b of the discharge valve 8 is connected to the upper end portion 5 of the piston valve.
C, and blocks communication between the valve hole 5f and the nozzle body 6.

Next, when the piston valve 5 is pushed down together with the nozzle body 6, the flap valve 4a is pressed against the bottom of the valve chamber 3, closing the suction port 3C, and the valve chamber 3 is pressurized. Furthermore, piston valve 5
is pressed down to the state shown in FIG. 2, the stem portion 4
b pushes up the discharge valve 8 and opens the valve hole 5f. That is, when the piston valve 5 is pushed down to the lowest position,
The stem portion 4b has a height such that its upper end passes through the valve hole 5f and protrudes to the piston valve upper end 5C to press the discharge valve 8 against the upper end of the nozzle body 6, and the discharge valve 8 resists the spring force. As a result of being pushed up by the stem portion 4b, a gap is created between the lip portion 8b and the upper end portion 5C of the piston valve, and the nozzle body 6
The inside of the piston valve communicates with the inside of the piston valve, and the compressed air inside the upper part of the valve chamber escapes to the outside, so that the pressurized cream-like fluid sucked into the valve chamber 3 is transferred to the valve hole 5f and the lip part. It flows into the discharge flow path of the nozzle body 6 through the gap between the piston valve upper end 8b and the piston valve upper end 5C, and is discharged to the outside from the discharge port 6C.

Next, when the pressing force on the piston valve 5 is released, the piston valve 5 is pushed up by the elastic force of the spring 7 and returns to the static upper position shown in FIG. As the piston valve 5 rises, the valve chamber 3
becomes a negative pressure, the flap valve 4a opens, and the creamy fluid inside the container is sucked into the valve chamber 3 through the suction port 3C. Thereafter, the above-described operation is repeated, and a creamy fluid is dispensed.

Next, a second embodiment is shown in FIGS. 6 to 8.
Embodiment 1 shown in FIGS. 5 to 5 is of a type in which the discharge valve 8 is separated upward from the upper end portion 5C of the piston valve 5 during operation.
In the embodiment shown in FIGS. 6 to 8, the discharge valve 8 is not separated from the piston valve 5 when the piston valve 5 is lowered, but is housed in the upper end thereof. The piston valve 5 of the second embodiment has a strut portion 5g formed at its upper end 5C, and a ceiling portion 5h is supported by the strut portion 5g.

There are a plurality of supporting columns 5g at arbitrary intervals (four in the figure).
An opening 5j that communicates the discharge flow path of the nozzle body 6 with the inside of the piston valve 5 is formed between the support columns 5g. On the other hand, the lower surface of the ceiling portion 5h slightly protrudes, and a spring 9 is fitted around the outer periphery of the ceiling portion 5h. Further, a protrusion 5X is provided between the upper end portion 5C of the piston valve 5 and the center portion 5b, and the rib 8a of the discharge valve 8 is in contact with the rib 8a. When the piston valve 5 is in a stationary state, the discharge valve 8 is pressed against the protrusion 51 by the elastic force of the spring 9 and stopped.
When the piston valve 5 is pushed down together with the nozzle body 6, the discharge valve 8 is pushed up by the stem fi4b as described above, and the piston valve 5 and the nozzle body 6 are brought into communication. On the other hand, when the piston valve 5 descends and reaches the lowest position, the discharge valve 8 is pushed between the pillars 5g by the stem 4b, and is pressed against the ceiling 5h while being held by the pillars 5g. ,
A gap is created between the piston valve upper end 5c and the opening 5.
The piston valve upper end portion 5C and the nozzle body 6 communicate with each other through the piston valve j. It should be noted that the piston valve 5 other than the above-mentioned configuration is the same as the first embodiment, so the same members in the drawings are given the same numbers and their explanations will be omitted.

<Effects of the Invention> Since the dispensing device of the present invention is operated by the vertical movement of a piston valve, it has much better operability and better longevity than conventional diaphragm type devices. Furthermore, in the device of the present invention, the discharge valve is pressed against the inside of the piston valve by the spring force and blocks the flow path when the device is static, so even if the container is tilted or turned upside down, the discharge valve will not open and the container will not open. Internal fluids will not leak out. In addition, when the piston valve returns to a stationary state after the dispensing operation, the discharge valve is forcibly lowered by the spring, and the fluid remaining in the discharge flow path of the nozzle body is pulled back to the upper end of the piston valve. The liquid removal is much better.

[Brief explanation of drawings]

1 to 6 show embodiments of the present invention, and FIG.
Figures 2 and 6 are partial vertical cross-sectional views, Figure 3 is a cross-sectional view of the nozzle body, and Figures 4 (a), (b), and (c) are vertical cross-sectional views, cross-sectional views, and bottom views of the valve member. 5 is a plan view and a sectional bottom view of the discharge valve, FIGS. 7(a) and 7(b) are a plan view and a partial side view of the upper part of the piston valve, and FIG. 8 is a side view of the discharge valve. In the drawing: knee container, 2-M body, 3-valve chamber, 4-
Valve member, 5-piston valve, 6-nozzle body, 7
-Spring, 8-Discharge valve, 9-Spring. Patent applicant Tokushu Aerosol Co., Ltd. Agent Patent attorney Masahiro Matsui and one other person Figure 2 Figure 3 Figure 4 Figure 5 <a> (C) Figure 6 Figure 7 ((Z) Procedural amendment 1986 January 16th Japan Patent Office Commissioner Michibe Uga 1. Indication of the case 1985 Patent Application No. 269474 2. Name of the invention Dispensing device for creamy fluid 3. Person making the amendment Relationship to the case Name of patent applicant Name Special Aerosol Co., Ltd. 4 Agent (164) Address 1-31-4-5 Honmachi, Nakano-ku, Tokyo Date of amendment order Voluntary

Claims (3)

[Claims] (1) A valve chamber provided at the opening of the container, a piston valve that slides in close contact with the wall of the valve chamber, and a nozzle body attached to the piston valve, the piston valve having a cylindrical shape, and an elastic means. The piston is mounted in the valve chamber so as to be able to move up and down, and has a lip portion formed on its outer periphery that is in close contact with the inside of the valve chamber, while the inside of the piston communicates with the valve chamber, and the inside of the piston valve has a valve member. A discharge valve that opens and closes the discharge passage of the nozzle body is provided, and the valve member has a stem that stands upright inside the valve chamber and a valve body that opens and closes the suction port of the valve chamber. The discharge valve is supported by elastic means and slides closely against the inner wall of the upper part of the valve chamber, and in the lowered position of the piston valve is pushed upward by the stem to open the discharge passage to the nozzle body. A dispensing device for dispensing creamy fluids. (2) The device according to claim 1, wherein the valve member also serves as a holder for the elastic means of the piston valve. (3) The device according to claim 1, in which a protrusion that prevents the discharge valve from descending is formed on the inner wall of the piston valve, and a support part that supports the upper end of the valve is further formed above the protrusion. and the discharge valve is interposed between the protrusion and the upper end.