JPS63196Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push-up pump type water jug that pushes out liquid in a container by expanding and contracting an air balloon.

BACKGROUND ART A push-up pump-type water jug that pushes out water in a container using air pressure from an air balloon is conventionally known. However, in conventional push-pump type water jugs like this, when the pressure inside the container becomes higher than the outside pressure due to a difference in temperature between the inside and outside of the container, the liquid inside the container naturally drains. The problem is that it is forced through the lift pipes.

The present invention was developed by focusing on the above-mentioned problems with conventional push-up pump type water jugs. A protrusion is formed on the valve seat contact surface to form a slight ventilation gap between the valve seat and the valve seat, and this ventilation gap allows the inside of the container to communicate with outside air, preventing the pressure inside the container from becoming higher than the outside pressure. The aim is to solve the problems of the conventional technology.

Embodiments of the present invention will be described below with reference to the figures. A pump 2 is attached to the top of the container 1. The pump 2 has a base 3 screwed into the opening of the container 1.
and an air balloon 4 fitted into a base 3.

The base 3 includes a water lift pipe 5 descending into the container 1 and a water injection pipe 6 communicating therewith, and also includes a communication hole 7 for communicating the air balloon 4 with the inside of the container 1.

The bellows-shaped air balloon 4 is made of elastic synthetic resin, and has a restoring spring 8 housed inside. An air supply hole 10 and an air intake hole 11 are formed in the bottom plate 9 of the air balloon 4, and a connecting tube 12 that is fitted into the communication hole 7 of the base 3 is provided in a protruding manner below the air supply hole 10.
The upper surface of the bottom plate 9 has a valve body 1 made of an elastic resin plate.
One side of 3 is fixed. In the illustrated embodiment, a projection 16 is formed on the upper surface of the bottom plate 9 of the air balloon, and an engagement hole 17 of the valve body 13 is fitted into the projection 16. The other side of this valve body 13 is the intake hole 1
1, and protrusions 14, 14 are provided on both edges of the lower surface on the way from the fixed part to the intake hole 11. As shown in FIG. 2, the protrusion 14 normally forms a small ventilation gap S between the lower surface of the valve body 13 and the valve seat 15 around the intake hole 11. This ventilation gap S is designed to be easily closed by the pumping pressure when the air balloon 4 is compressed. Within a range that satisfies these conditions, the material of the valve body 13,
shape, size, and position and size of the protrusion 14;
The shape can be freely selected. In the illustrated embodiment, the protrusions 14 of the valve body 13 are formed on both upper and lower surfaces of the valve body 13. This is to eliminate the distinction between the front and back of the valve body 13 and to improve the workability of attaching it to the bottom plate 9.

Next, the effect will be explained. When air balloon 4 is compressed, the third air balloon is released when its internal pressure increases slightly.
As shown in the figure, the valve body 13 is flexibly deformed and the intake hole 11
closes the intake hole 11 by closely contacting the valve seat 15 on the periphery of the
The air inside the air balloon 4 is transferred from the air supply hole 10 to the connection tube 1.
2. The liquid L is sent to the space inside the container 1 through the communication hole 7 to increase its atmospheric pressure, and the liquid L inside the container is pushed up to the water pumping pipe 5 and poured out through the water injection pipe 6. When you release your hand from the air balloon 4, it is restored by the spring 8, and at this time, the valve body 1
3 separates from the valve seat 15 and sucks outside air through the intake hole 11. In the restored state of Air Balloon 4,
At all times, the air pressure inside the air balloon 4 and the air pressure in the space inside the container 1 are equal. In this state, as shown in FIG.
5, and a ventilation gap S is formed between the valve seat 15 and the valve seat 15. Therefore, for example, even if the space temperature inside the container 1 rises and the internal air expands, the air inside the container 1 will flow back through the communication hole 7, the connecting tube 12, and the air supply hole 10, causing the valve body 13 and the valve seat to flow backward. Since the liquid L in the container 1 flows out through the ventilation gap S between 15 and the intake hole 11, the pressure inside the container is always kept equal to the outside pressure.
There is no risk of the water being accidentally discharged from the water injection pipe 6.

As explained above, in the present invention, the valve body 13 of the suction valve of a push-up pump type water pitcher is formed of a flexible plate-like body, and the valve seat 15 is formed on the valve seat contact surface of the valve body 13.
The protrusion 14 that forms a slight ventilation gap S between
The structure is configured to prevent the internal pressure of the container 1 from becoming higher than the external pressure by always providing ventilation between the internal space of the container 1 and the outside air. It has the advantage that it can effectively prevent discharge, and has an extremely simple structure and can be provided at low cost.

[Brief explanation of the drawing]

Figure 1 is a sectional view, Figure 2 is an enlarged sectional view of a portion of the valve body when it is open, Figure 3 is an enlarged sectional view of a portion of the valve body that is closed. FIG. 1... Container, 2... Pump, 4... Air balloon, 5... Lifting pipe, 6... Water injection pipe, 10... Air supply hole, 11... Intake hole, 13... Valve body, 14... Protrusion, 15... Valve seat, S... Ventilation gap.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pusher that sucks in outside air with an air balloon through a suction valve and sends it into a container to increase the pressure inside the container and pour out the liquid in the container to the outside through a pumping pipe. In the lift pump type water jug, the valve body of the suction valve is a flexible plate-like body that deforms when the air balloon is compressed and can come into close contact with the valve seat. A push-up pump type water jug characterized by having a protrusion that forms a slight ventilation gap between the water jug and the water jug. (2) An intake hole and an air supply hole are formed in the bottom plate of the air balloon, one side of the valve body is fixed to the top surface of the bottom plate, the other side of the valve body extends above the intake hole, and an intermediate lower surface of the valve body is fixed to the bottom plate. Utility model registration claim No. (1) in which a protrusion forming the ventilation gap is formed.
The push-up pump type water jug described in section.