JPS6031552B2 - Spring pressure accumulator spray pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved dawn mist pump that accumulates pressure with spring pressure and generates mist, and its purpose is to eliminate residual air generated in the pressure accumulation chamber. be.

Another object of the present invention is to use a piston to open and close a liquid passage that communicates between a pressure accumulation chamber and a nozzle, thereby simplifying the structure and reducing costs. To explain with a diagram, the valve case 1 is provided with an air inlet hole 12 that takes in air from the outside and a spring hook 11 that keeps the piston 7 in a fixed position in order to prevent pressure reduction inside the container.

One end of the air inlet hole 12 communicates with the inside of the container 20, and the other end communicates with the inside of the valve shell 1 above the piston 7.
Inside the valve weight 1, there is a check valve 9 at its bottom that allows liquid sucked up from the pipe 30 to pass through but not in the opposite direction, and an inner wall of the valve cover 1 and an outer periphery of the plunger 3. A piston 7 that slides airtightly between the pistons 7 and a compression spring 6 that biases the piston 7 is provided, and the piston 7 is made of a soft material so that the sliding portion has elasticity. The distal end portion which is inserted and slides is formed thinly.

A compression spring 6 is configured to fit from the upper surface of the piston 7 to the lower surface of the cap 2.

The plunger 3 is provided with a horizontal hole 4 that communicates with the liquid passage 13 from the pressure accumulation chamber 21, and one end of the passage 13 communicates with the nozzle 4. Said plunger 3
A compression spring 5 is provided at the bottom of the plunger 3 for reciprocating the plunger 3, but as an alternative, the spring 5 may be located at the top of the plunger 3.

In this case, it goes without saying that a spring 5 retaining portion is provided at the intermediate portion of the plunger 3. A cap 2 is placed on the top of the Benjaku 1 to prevent it from falling off easily, and a container 201 is also placed on top of the Benjaku 1.
A suitable screw, for example a screw, is provided for this engagement, and a spray head 10 is connected to the upper part of the plunger 3 for dispensing as a mist, paste or the like.

When using the present invention thus constructed, when the misting head 10 is pushed down with finger pressure as shown in FIG. Therefore, the piston 7 is compressed by the plunger 3, and the piston 7 is pushed up against the spring 6 by the compressed amount, thereby maintaining the accumulated pressure.

When the plunger 3 is further pushed and the horizontal hole 4 is closed by the piston 7, the liquid that has been pressurized by the spring 6 passes through the liquid circuit 13 and is ejected from the nozzle 40.
When the finger pressure is removed from the Akebono mist head 10 after the spraying is finished, the plunger 3 moves back by the spring 5, and the pressure accumulation chamber 21 becomes negative pressure, so the liquid in the container 20 passes through the suction pipe 30 and is reversed. The stop valve 9 is closed and the water is replenished to prepare for the next falsification cycle.

The present invention has a horizontal hole 4 that communicates from the pressure accumulation chamber 21 to the nozzle 4.
is provided in the upper part of the pressure accumulating chamber 21, the air stagnant in the upper part is discharged during the next mist, and the generation of residual air is completely prevented.

Further, in the present invention, when the pressure in the pressure accumulation chamber 21 becomes negative pressure as the plunger 3 moves back, as described above, the liquid is sucked up from inside the container 20.
1, since the lotus is passed through the horizontal hole 4, the nozzle 4
0 and the liquid remaining in the liquid passage 13 are suctioned, and then air is sucked in.

However, if the horizontal hole 4 and the piston 7 are located at appropriate positions so that the horizontal hole 4 is immediately closed by the piston 7 after suction of the residual liquid is finished, air suction can be completely prevented. Closure due to solidification of dry substances remaining in the nozzle 40 and liquid passage 13,
Undesirable residual fog caused by residual air in the pressure accumulating chamber 21 can be prevented. To prevent pressure reduction within the container 20,
A gap 14 is provided at the outer periphery of the plunger 3 in which the center of the cap 2 is movable, and when the plunger 3 is moved, air is admitted from the gap 14 through the air entry hole 12. If the liquid leaks from the plunger 14, a European-grade sliding member that slides airtightly on the outer circumference of the plunger 3 is provided, and when the pressure inside the container 20 is reduced, the sliding member is bent to open. It may be made to allow air to enter.

Further, in the present invention, since the horizontal hole 4 is closed by the piston 7, leakage is prevented.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing the effect of FIG. 1. 1... Bengai, 3... Cap, 3...
... Plunger, 5, 6 ... Spring, 7 ... Piston, 9 ... Check valve, 10 ... Around fog head, 20
...Container, 30"""pipe. Next 1 diagram Next diagram

Claims (1)

[Claims] 1 a container suitable for containing a dispensed product, a spray head suitable for discharging said dispensed product to the outside, a cap suitable for engaging a pump body onto said container, and a vacuum generation within said container; A valve housing is provided with an air inlet hole for preventing air inflow, a plunger is provided with a passage for pressurizing the dispensed material and introducing the dispensed material to the nozzle, and the outer circumference of the plunger and the inner wall of the valve housing are arranged in an airtight manner. A spring accumulator spray pump comprising a piston that slides in the opposite direction, a compression spring that biases the plunger and the piston, and a check valve that allows dispensing in one direction but not in the opposite direction. , the plunger is provided with a horizontal hole that is normally closed by a piston, and when the plunger moves, the horizontal hole opens from the piston to communicate the pressure accumulation chamber and the nozzle to distribute the pressure accumulation. Spring pressure accumulator spray pump.