JPH10147965A - Pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump device with excellent performance and ease for mounting work at a low manufacturing cost and in a simplest-possible system and structure. SOLUTION: A pump device has a top-open supporting cylinder 1 provided with a suction valve 6 a discharge valve 7 and a spring 4 stored therein and suspended on a floor plate 3. A small capacity of bottom-open sliding cylinder 5 with a communication hole 11 made in the side wall of the top to suck/ discharge water is suspended in a large capacity of closed expansive material 8 with the lower part protruded and made into one unit therewith to form a pup mainbody A. The sliding cylinder 5 is fitted from upward into the supporting cylinder 1 to be seated on the spring 4. In this way, air in the pump mainbody is completely expelled and water is completely filled in the pump mainbody, so that pressure generated by stepping the pump mainbody is applied to water stored inside without any loss to ensure discharge of water. The pump is thus provided with high performance and extremely good operability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel proposal of a pump device, and more particularly to a novel proposal of a pump device most suitable for application to a temporary toilet.

[0002]

2. Description of the Related Art In recent years, there have been proposed temporary toilets provided with washing means, and one of them is a bellows structure which is installed under the floor by depressing a pedal arranged on a floor plate. The pump body (extendable pump body) is expanded and contracted so that flush water is pumped to the toilet to flush the toilet.

[0003] By the way, the pump device using the telescopic pump body which has been proposed up to now does not give sufficient consideration to the structure of the pump itself and simplification and simplification of the work of mounting the pump. As a result, the purpose of reducing the cost of the pump has not been achieved, and this has hampered its widespread use.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above, and has excellent performance while simplifying the mechanism and structure of the pump as much as possible, and also facilitates the mounting work.
It is an object of the present invention to propose a pump device that can be manufactured at low cost.

[0005]

According to the present invention, a suction valve and a discharge valve are provided at a lower portion, and a top surface which is urged upward to accommodate a spring and is vertically installed on a floor plate or the like is opened. A supporting cylinder body, and a small-capacity sliding cylinder body for water absorption / discharge, in which a communication hole is provided in the top side wall surface and the bottom surface is open,
The lower part of the cylindrical body is protruded, and the cylindrical elastic body and the sliding cylindrical body are integrated by being vertically installed in a large-capacity sealed elastic body,
A pump body that communicates with the outside through an opening in the bottom surface of the sliding cylinder, and the sliding cylinder and the sealing elastic body communicate with each other only through the communication hole. The sliding cylinder body of the main body is inserted into the support cylinder from above and seated on the spring, and the pump body is pressed from above to shrink the sealed telescopic body so that the water in the pump body goes out. Through the water suction valve by pushing up the sliding cylinder by the repulsive force of the spring in the supporting cylinder and restoring the closed elastic body by releasing the pressure on the pump body. The object has been solved by completing a pump device configured to suck water from a supply source into a pump body.

[0006]

[Action]

[Operation at the time of installation (initial first)] In a state where the present apparatus is installed (completely unused state), the inside of the pump body is filled with air, but the pump body is depressed a few times from above. When doing this (by expanding and contracting the closed elastic body), the air in the closed elastic body moves through the communication hole due to the pressure difference between the large volume closed elastic body and the small volume sliding cylinder. And is pushed out to the outside at a stretch via the discharge valve together with the air in the sliding cylinder. In other words, the air in the pump body is completely expelled, and in exchange for this, water is strongly sucked into the sliding cylinder from the suction valve, and furthermore, vigorously flows into the sealed telescopic body from the communication hole, The inside of the pump body is completely filled with water.

[Subsequent normal use] Since the pump body is completely filled with water by the above-described operation at the time of installation (since there is no air layer in the pump body), In use (normal use), if the pump body is stepped on and the closed elastic body is crushed flatly (at this time, the sliding cylinder body is pressed against the spring in the support cylinder, Is slid downward in the support cylinder while crushing), and the pressing force is directly applied to the water contained in the pump body. That is, at the same time as the stepping, the water in the closed elastic body is pressed into the sliding cylinder through the communication hole, and the water in the pump body is sent out from the discharge valve to the outside via the sliding cylinder at once.

When the pressing (stepping) on the pump body is released, the sliding cylinder is pushed back by the repulsive force of the spring in the supporting cylinder (that is, the sliding cylinder slides upward in the supporting cylinder). Thereby, the closed elastic body is extended and restored to the original volume, and in conjunction with this action, water is sucked from the suction valve, and the inside of the pump body is filled with water.

The pump body has a configuration in which a small-volume sliding cylinder for supplying and discharging water is accommodated in a large-volume hermetic expansion and contraction body, and both are communicated with each other only by a continuous cylinder hole. By using the pressure difference, the air in the closed elastic body can be completely expelled through the sliding cylinder, and thus the pump body can be completely filled with water. However, it can be spilled on the water contained inside without any loss and can be discharged to the outside, ensuring high performance as a pump, and a good feeling when stepping on, and comfortable operability. can get.

Further, since the pump body is directly installed on the floor, the installation work is easy, and the subsequent maintenance management work can be easily performed.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings. (1) is a support cylinder, which is vertically fixed to the floor plate (3) by a fastener (2).

A spring (4) is housed in the support cylinder (1). The spring (4) is fitted into the support cylinder (1) from above, and is seated on the spring (4). The bottom surface of the sliding cylinder (5) is constantly pushed up.

The inner wall of the supporting cylinder (1) is provided with a step (1a) at a required position (having a reduced diameter), and the bottom bulge of the sliding cylinder (5) pushed up by a spring (4). When the protrusion (5a) comes into contact with the reduced diameter portion (1a), the upward movement of the sliding cylinder (5) is prevented at the position.

A suction valve (6) and a discharge valve (7) are provided at required positions below the support cylinder (1).

The sliding cylinder (5) has an open bottom surface and a closed top surface.

Reference numeral (8) denotes a bellows-like hermetically-sealed elastic body, the bottom of which is fixedly fastened to the support cylinder (1) by a fastening ring (9), and attached to the fastening ring (10). The top is fastened and fixed to the sliding cylinder (5) to form a closed body.

A communication hole (11) is opened in the top side wall surface of the sliding cylinder (5), and the communication between the sliding cylinder (5) and the closed elastic body (8) is established. ) Alone, and both constitute a pump body (A).

(12) is a stepping plate fixed to the top surface of the sliding cylinder (5).

The operation will be described below. When the pump device of the present invention is installed and used, the stepping plate (12) is depressed a few times with an appropriate force (this operation is performed only once).

Then, the air in the pump body (A) is filled with the air in the closed elastic body (8).
From 1), the sliding cylinder (5) is press-fitted, and the sliding cylinder (5) performs the function of the guide cylinder, and is discharged from the discharge valve (7). That is, the air in the pump body (A) is completely expelled.

When the foot is released from the stepping plate (12) (when the pressing force is released), the sliding cylinder (5) is lifted by the repulsive force of the spring (4), and the bottom of the sliding cylinder (5) is lifted. The bulging part (5a) is a reduced diameter part (1a) of the support cylinder (1).
, The upward movement of the sliding cylinder (5) is prevented.

That is, the spring (4) and the pump body (A) are restored to the state shown in the figure. By this action, water is sucked from the suction valve (6), and the sucked water is transferred to the sliding cylinder ( 5), and further press-fit into the closed elastic body (8) through the communication hole (11), so that the pump body (A) is filled with water.

Hereinafter, a normal operation may be performed. That is, since the pump body (A) is filled with water by the above operation, when the stepping plate (12) is depressed (when the closed elastic body <8> is crushed until it becomes flat), the pressure is increased. The water in the pump body (A) immediately spreads through the communication hole (1) due to the pressure difference due to the volume.
From 1), it is press-fitted into the sliding cylinder (5), is discharged at once from the discharge valve (7) via the sliding cylinder (5), and is pressure-fed to a toilet (not shown).

When the foot is released from the step board (12) (when the pressure on the closed elastic body << 8 >> is released), as described above,
The sliding cylinder (5) is lifted by the repulsive force of the spring (4), whereby the closed elastic body (8) is extended, and the pump body (A) is restored to the position shown in the drawing. The water sucked in from (6) flows into the closed elastic body (8) from the sliding cylinder (5) and the communication hole (11) at a stretch, and the inside of the pump body (A) is filled with water and automatically. Ready for next use.

[0025]

According to the present invention, a small-volume sliding cylinder for supplying and discharging water is accommodated in a large-volume closed elastic body, and both are accommodated on the top side wall surface of the sliding cylinder. Since it is configured to communicate only with the formed communication hole, the air in the pump body can be completely expelled by utilizing the pressure difference between the two, so that the pump body can be completely filled with water. , The pressure on the pump body will be applied to the water contained inside without any loss, and the water can be reliably discharged, ensuring high performance as a pump,
Extremely comfortable operability is obtained.

Further, since the pump body is directly installed on the floor, the installation work is easy, and the subsequent maintenance work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a structural explanatory view according to a partial cross-sectional view of a pump device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Support cylinder 3 ... Floor plate 4 ... Spring 5 ... Sliding cylinder 6 ... Suction valve 7 ... Discharge valve 8 ... Sealed expansion / contraction body 11 ... Communication hole 12 ・ ・ ・ Step board

Claims (1)

[Claims] 1. A support cylinder having a suction valve and a discharge valve provided at a lower portion thereof, and having a top surface opened by being urged upward to house a spring and being vertically installed on a floor plate or the like; A sliding cylinder of small volume maki for water absorption and drainage, which has a communication hole in the side wall surface and an open bottom surface, is vertically protruded from the lower part of the cylindrical body into a large-capacity sealed elastic body. The sliding tubular body and the sliding tubular body are integrated, communicating with the outside through an opening in the bottom surface of the sliding tubular body, and the sliding tubular body and the sealing stretchable body through the communicating hole. The pump body, which is in communication only with the pump body, has the sliding cylinder body of the pump body fitted into the support cylinder from above and seated on the spring. By compressing the body, the water in the pump body is pumped out through the drain valve, while the pump By releasing the pressure on the body, the sliding cylinder is pushed up by the repulsive force of the spring in the supporting cylinder to restore the closed elastic body, thereby allowing water to be sucked into the pump body from the supply source via the water absorption valve. A pump device characterized by the following.