JPH0713817Y2 - Small manual reciprocating sprayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a small manual reciprocating atomizer which can continuously see the spray not only in the descending stroke but also in the ascending stroke.

"Problems to be solved by conventional techniques and devices" Conventionally, a small manual sprayer equipped with a downward spray head attached to the mouth of a liquid container usually has a suction valve at the lower end and from the lower end. Inside the vertical cylinder with the suction pipe hung vertically, the annular piston is internally urged upwards,
The flow path pipe is hung vertically from the push down spray head to mechanically connect to the annular piston, and the flow path pipe is equipped with a discharge valve. The liquid in the liquid container is sucked into the cylinder through the suction pipe, pressurized, and supplied to the pressing spray head via the flow path pipe, spraying the pressing spray head. It is designed to be sprayed from a nozzle.

However, in this sprayer, the spray is generated only when the push-down spray head is pushed down, and no matter how quickly and continuously the push-down spray head is operated, the continuous spray cannot be obtained.

The present invention is intended to solve such a problem with a simple structure.

[Means for Solving the Problems] To achieve the above object, the present invention provides a first annular piston in a first cylinder 1 having a suction valve 2 inside a lower portion and a suction pipe 3 suspended from a lower end thereof. 4, the lower end of the flow path pipe 5 is connected to the first annular piston to project upward, the first discharge valve 6 is provided at an appropriate position inside the flow path pipe, and the upper end portion of the flow path pipe is provided. A second annular piston 7 is provided on the outer circumference, and a pressing spray head 8 is placed on the outside of the flow path pipe 5 from above. The second cylinder 9 is provided, the second cylinder is slidably fitted to the second annular piston 7, and the spray nozzle 10 is mounted on the second cylinder 9 in the downward spray head 8. Valve seat 11 and valve hole that open to
12 is provided, and the valve portion 13 formed at the upper end of the flow path pipe 5 is seated on the valve seat to form the second discharge valve 14, and the downward spray head 8 and the second annular valve are formed. It is characterized in that the piston 7 and the piston 7 are appropriately biased upward by springs 15 and 16 of elastic force.

The elastic force of the spring 16 for urging the second annular piston 7 is adapted to the required liquid pressure for spraying the pressurized liquid.

"Operation" Since it has the above-described configuration, it may be used in the same manner as the conventional small-sized manual sprayer, but the following operation is caused by the operation of the downward spray head 8.

Down stroke of the push-down head With the push-down of the push-down head, the flow path pipe 5 and the first annular piston 4 are lowered, the suction valve 2 is closed, and the inside of the first cylinder 1 is in a pressurized state. The pressurized liquid therein pushes open the first discharge valve 6 and flows into the second cylinder 9, and when the liquid pressure in the second cylinder 9 becomes equal to or higher than a predetermined pressure suitable for spraying, the second annular piston 7 is spring-loaded. The second discharge valve 14 is opened by pushing down against 16 and, thereby, a part of the pressurized liquid flowing into the second cylinder 9 is ejected as a mist from the spray nozzle 10. In addition, the excessive pressurized liquid that has flowed into the second cylinder 9 further pushes down the second annular piston 7 and is stored in the second cylinder 9 in a pressurized state. That is, the spring 16 stores the hydraulic pressure as mechanical energy, and as a result, the liquid is stored at a hydraulic pressure equal to or higher than a predetermined value suitable for spraying.

Ascending stroke of the push-down head When the push-down head returns, the second annular piston 7 rises due to the elasticity of the spring 16 with the first discharge valve 6 closed and the second discharge valve 14 open, and the elasticity of the spring is increased. Second cylinder 9 that maintains a fluid pressure above a predetermined value suitable for spraying
The pressurized liquid inside continues to spray from the spray nozzle 10 as a mist. Further, at this time, the flow path pipe 5 and the first annular piston 4 rise together with the downward spray head 8 by the elasticity of the spring 15, but with this, the inside of the first cylinder 1 becomes negative pressure and the suction valve 2 opens. Then, new liquid flows into the first cylinder 1 through the suction pipe 3.

[Example] The drawings show a small manual reciprocating sprayer made of synthetic resin according to the present invention.

In this case, in the above structure, the first cylinder 1 is vertically provided from the mounting base cylinder 17 screwed to the mouth of the liquid container, and the guide cylinder 18 is erected on the upper surface of the mounting base cylinder. The downward spray head 8 is slidably fitted in the guide cylinder.

Thus, ball valves are used for the suction valve 2 and the first discharge valve 6.

In the figure, 19 is a packing and 20 is an intake hole.

[Advantage of the Invention] According to the present invention, the downward spray head 8 is provided with the second cylinder 9 having a volume inside and outside the half of the first cylinder 1, and the spring 16 is biased upward in the second cylinder. Since the first discharge valve 6 and the second discharge valve 14 are provided upstream and downstream of the second cylinder, the first cylinder 1 is provided in the second cylinder 9. The pressurized liquid supplied from the above can be stored at a liquid pressure equal to or higher than a predetermined value suitable for spraying, and in an amount sufficient to cause spraying in the ascending stroke of the downward spraying head 8, and thus, the downward spray Not only when the head 8 is pushed down, but also when the head 8 is returned, it is possible to continuously obtain the spray, and to make continuous spray possible. Moreover, due to the pressure accumulating action at that time, a good spray without dripping can be obtained. Obtainable.

Further, because of the above-mentioned configuration, the structure can be simply and compactly made, and further, it can be easily manufactured and provided at a low cost.

[Brief description of drawings]

 The drawing is a side view showing the embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... 1st cylinder, 2 ... Suction valve 3 ... Suction pipe, 4 ... 1st annular piston 5 ... Flow path pipe, 6 ... 1st discharge valve 7 ... 2nd annular piston, 8 ... Depressing spray head 9 ... Two cylinders, 10 ... Spray nozzle 11 ... Valve seat, 12 ... Valve hole 13 ... Valve part, 14 ... Second discharge valve 15, 16 ... Spring, 17 ... Mounting base 18 ... Guide tube

Claims (1)

[Scope of utility model registration request] 1. A first annular piston 4 is installed in a first cylinder 1 having a suction valve 2 inside the lower part and a suction pipe 3 extending vertically from the lower end, and a flow pipe is provided in the first annular piston. 5, the lower end of which is connected and protruded upward, the first discharge valve 6 is provided at an appropriate place inside the flow passage pipe, and the second annular piston 7 is provided on the outer periphery of the upper end portion of the flow passage pipe. The pressing spray head 8 is covered from above on the outside of the pipe 5, and a second cylinder 9 having a volume inside and outside the first cylinder 1 is provided inside the lower part of the pressing spray head. The second annular piston 7 is slidably fitted to the second annular piston 7, and the spray nozzle is mounted on the second cylinder 9 in the downward spray head 8.
A valve seat 11 and a valve hole 12 that open to 10 are provided, and a valve portion 13 formed at the upper end of the flow path pipe 5 is seated on the valve seat to form a second discharge valve 14, and The push-down spray head 8 and the second annular piston 7 are appropriately springed by a spring 15,1.
Small hand-operated reciprocating sprayer characterized by being urged upwards at 6.