JPS6024438Y2 - Manual liquid injection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved manual injection device that always injects the inner container normally, regardless of whether the liquid injection container is placed in a normal upright position or an inverted position. be.

Hereinafter, an embodiment of the present invention will be described. 1 is a cap that is screwed onto the neck of a liquid container; 2 is a valve barrel having a collar 3 fitted and fixed to the inner upper wall portion of the cap 1;
A large diameter portion 4 and a small diameter portion 5 are formed vertically and continuously through a stepped portion 6, and a liquid suction pipe structure 7 is provided at the lower end of this small diameter portion 5.
The upper end of the first suction pipe 8 is connected to.

9 is a large piston received in the large diameter portion; 10 is an injection valve pipe integrally equipped with the large piston 9 at its lower end, and is connected to the lower edge of the center hole 11 of the cap 1 via a backing 12 to a shoulder portion 13;
A nozzle 14 projects upward from the center hole 11 to the outside.
Insert the button 15 with the button into the upper end.

16 is a small piston received in the small diameter portion 5; 17 is a valve cylinder 2 formed by this small piston 16 and the large piston 9 above;
A pressurizing chamber 18 is formed internally to be separated from other parts, and is a rod-shaped member integrally equipped with the small piston 16 at its lower end, and has a liquid passage 19 opened to the small diameter portion 5 side inside. It communicates with the pressurizing chamber 17 through a horizontal hole 20 at the top.

Reference numeral 22 denotes a push-up spring located within the small diameter portion 5 and attached to the rod-shaped member 18.
The upper and lower ends can be received by the lower end face of and the bottom of the small diameter portion 5.

Reference numeral 21 denotes an elastic valve body, which is attached to the upper part of the rod-shaped member 18 in the shape of a downward cap, and comes into contact with a valve seat formed at the lower end opening of the injection valve pipe 10, covers the horizontal hole 20, and connects each valve part to those parts. The horizontal hole 20 is opened during liquid suction, the horizontal hole 20 is closed during injection, and the valve seat contacts the valve seat during liquid suction, and when the liquid pressure in the pressurized chamber overcomes the push-up spring 22 during injection. The valve is opened by moving away from the valve seat, and the pressurizing chamber 17 and the nozzle 14 are communicated with each other.

The liquid suction pipe structure 7 is assembled from each of the first and second suction pipes 8° 23 and a cylindrical part 24 for connecting them.

The cylindrical part 24 has an opening on the upper end surface and has a first fitting hole 25 and a second fitting hole 25.
Fitting holes 26 are provided in parallel, and a first small diameter hole 2 is provided at the bottom of each of the fitting holes 26.
7 and the second small-diameter hole 28 are provided in series, and a central hole 29 common to the small-diameter holes 27 and 28 is provided below the center hole 29, and a valve seat 30 and an internal hole 31 are provided continuously thereto. A valve seat 32 is provided on the upper end surface of the lower end opening of the internal hole 31.
The ball 34 is inserted into the inner hole 31 by fitting the receiving cylinder 33 with the ball 34 into the inner hole 31.
be installed so that it can move freely in the vertical direction, and each valve seat 30
, 32.

35 is a liquid inlet opened at the lower end of the receiving cylinder 33.

The central hole 29 always communicates the first and second suction pipes 8, 23, and is provided so that its outer periphery commonly enters the circle of the small diameter holes 27, 28, and is connected to the passage 36. 3
7 to the central hole 29, and the first and second small diameter holes 2
7 and 28, the passage 27 of the second small diameter hole 28 is made to have a significantly smaller cross-sectional area than the passage 36 of the first small diameter hole 27, providing resistance to the flow of liquid.

The lower end of the first suction pipe 8 connected to the valve cylinder 2 is fitted into the first fitting hole 25, and the lower end of the second suction pipe 23 is fitted into the second fitting hole 26. The pipe 23 stands parallel to the first suction pipe 8, and its upper end opens near the mouth of the injection container to form a second liquid inlet 38.

During normal injection in an upright position, the ball 34 received in the internal hole 31 moves downward to the valve seat 30 due to gravity as shown in FIG.
be accepted.

With one stroke at the initial stage of operation, the ball valve is released and liquid is sucked into the pressurizing chamber 17 from the first liquid inlet 35 and fills the first and second suction pipes 8 and 23.

When pushing down the injection valve pipe 10, the ball valve blocks the passage to the first liquid inlet 35, so that the liquid in the first suction pipe 8 flows into the second
The second suction pipe is filled with the inflow inside the suction pipe 23.

During the next suction operation, the liquid is sucked up from the liquid passage with the ball valve released, and since the second suction pipe is filled with liquid, resistance due to the surface tension of the liquid is added, and the first and second passages are 36.3
The difference in the cross-sectional area of 7 also acts, and the water is sucked into the pressurizing chamber 17 as the main flow of the flow to the first suction pipe 8 .

The pressure of the liquid filling the pressurizing chamber is increased by the large piston, and when that liquid pressure overcomes the push-up spring 23, the rod-shaped member receives the liquid pressure and quickly moves downward, causing the valve to contact the valve seat. is released and sprayed from the nozzle all at once.

Normal injection is performed by repeating these operations.

When the valve is inverted as shown in FIG. 2, the ball 34 is received by the upper valve seat 30.

This liquid is transferred to the mouth of the injection container, and a second liquid is deposited within the liquid.
The second liquid inlet 38 of the suction pipe 23 is opened, and by repeating the above-described injection operation, liquid is sucked from the second liquid inlet 38, and the liquid is sucked into the central hole 29.
, followed by the first suction pipe 8, sucked into the pressurizing chamber 17, and injected.

In the embodiments shown in FIGS. 3 and 4, the 11th second suction liquid 8a, 23
In another embodiment, a has a double cylindrical shape, the second suction pipe 23a has a large diameter and is fitted into the upper outer periphery of the cylindrical part 24, and the first suction pipe 8a is inserted so as to create an annular gap 39 inside. The first suction pipe 8a is inserted and its lower end is fitted into the fitting hole 25a, and a narrow axial groove 40 is provided in the peripheral wall of the fitting hole 25a with its lower end opening into the central hole 29a. The second suction pipe 23a and the first suction pipe 8a are connected through the groove 40 and the central hole 29a.

The upper end of the large-diameter second suction pipe 23a opens near the mouth of the injection container.

FIG. 3 is a partial cross-sectional view of the device in an upright position, and FIG. 4 is a partial cross-sectional view in an inverted position.

In Figures 3 and 4, the operation for injection, the positioning of the ball valve, and the flow of liquid are shown in Figures 1 and 2.
It is similar to the figure.

Since the present invention has the above-mentioned configuration, it is possible to properly spray liquid from the container even if the spray container is placed in an upright or inverted position in order to be in a suitable position for use. The suction pipe structure has an extremely simple structure and can reliably maintain normal injection.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the present invention when standing upright, Fig. 2 is a partial sectional view when the invention is inverted, Fig. 3 is a partial sectional view of another embodiment when standing upright, and Fig. 4 is the same. A partial cross-sectional view when inverted is shown. 2...Valve cylinder, 7...Liquid suction pipe structure,
8, 8a... First suction pipe, 23, 23a...
... Second suction pipe, 24 ... Cylindrical part, 29.
...Fork in the road.

Claims (1)

[Scope of utility model registration request] An injection valve device that is manually operated is arranged in a vertically connected valve cylinder having a diameter difference, and includes an injection valve pipe, a large piston formed at the lower end of the injection valve pipe, a small piston facing the large piston, and a rod-shaped rod having the small piston. The rod-like member has an elastic cap-like member on the upper part, and the rod-like member is configured to form a check valve between a valve seat of the injection valve pipe and a liquid passage leading to a pressurizing chamber divided by a large and small piston. and the first part of the suction pipe structure is connected to the injection valve device.
This first suction pipe and another second suction pipe are connected by a cylindrical part below, and a branch passage inside the suction pipe allows constant communication between the two, and a second suction pipe is connected to the second suction pipe. The passage to the pipe is narrowed, an internal hole communicating with the liquid inlet is provided below the branch passage, a weight-operated ball valve is housed in the internal hole, and the liquid inlet of the second suction pipe is opened near the mouth of the container. A manual liquid injection device consisting of: