JP2002294790A - Device for automatically discharging fixed quantity of water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for automatically discharging a fixed quantity of water, which can automatically discharge the water in the fixed quantity while dispensing with a power source such as a power supply and artificial manipulation, and which is used to flush a public lavatory, flush excrement in a breeding shed for animals, prevent sedimentation in a channel, etc., and meet other purposes. SOLUTION: This device is composed of a water tank 2, a feed pipe 3, a drain pipe 4, the first valve seat 5, a large-diameter pipe 6, the second valve seat 7, a valve body 8, an overflow pipe 9 and a float means 10. The device is provided particularly with the large-diameter pipe 6 which is provided in a bottom part of the water tank 2 so as to be concentric with the drain pipe 4, the overflow pipe 9 which is provided inside the water tank 2 in order to make water flow in between the drain pipe 4 and the large-diameter pipe 6 when a prescribed water level H is reached, and the float means 10 which makes the valve body 8 abut on the valve seats 5 and 7 by water-depth pressure P until the water level H is reached and which makes the valve body 8 float so as to make the valve body 8 separated from the valve seats 5 and 7 when the water level H is reached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic quantitative drainage system for automatically discharging a fixed amount of water, for example, for use in washing public toilets, washing manure in animal breeding houses, preventing sedimentation in waterways and the like. It relates to improvement of the device.

[0002]

2. Description of the Related Art Conventionally, as an automatic quantitative drainage device of this type, for example, a device that automatically detects a water level and automatically discharges a certain amount of water by opening a motor-operated valve provided in a drain pipe is known. Conceivable. However, although such a device has a relatively simple structure, it has a drawback that a power source such as a power source is required.

Further, as a constant-rate drainage device, for example, a device using a flush valve for discharging a fixed amount of water by operating a handle, a tank for storing water and a ball tap for stopping water supply when the water reaches a predetermined water level are used. 2. Description of the Related Art A low tank device for a flush toilet equipped with a float valve for discharging water in a tank by operating a handle is known. However,
In such a device, a certain amount of water could not be automatically discharged because the water was drained by operating a steering wheel manually.

[0004]

In short, all of the conventional devices require a power source such as a power source or require an artificial operation. In view of the problems in ordination, was conceived in order to solve this problem, the processing of its object,
It is an object of the present invention to provide an automatic constant-quantity drainage device which does not require a power source such as a power supply or an artificial operation, and can automatically discharge a fixed amount of water.

[0005]

The automatic quantitative drainage device of the present invention is basically provided with a water tank for storing water, a water supply pipe provided at the top of the water tank to supply water, and a water tank provided at the bottom of the water tank. A drain pipe for draining water, a first valve seat formed at the upper end of the drain pipe, a large-diameter pipe provided substantially concentrically with the drain pipe at the bottom of the water tank, and formed at the upper end of the large-diameter pipe A second valve seat, a valve element which is seated on and absent from the first valve seat and the second valve seat, and water is provided between the drain pipe and the large-diameter pipe when provided in the water tank and reaches a predetermined water level. And an overflow pipe for inflow of the first valve seat according to its water depth until the water level reaches a predetermined level, and the valve body floats when the water level reaches a predetermined level. And a float means for separating from the second valve seat.

[0006] Before the start of water supply in which water is not supplied from the water supply pipe, the valve body is seated on the first valve seat and the second valve seat due to the own weight of the valve body and the float means, so-called closed. When water is supplied from the water supply pipe, the water is stored in the water tank. When the water in the water tank does not reach a predetermined water level (water depth), the valve body is about to float by the float means, but the valve body is seated on the first valve seat and the second valve seat by the water depth pressure. The closed valve state is maintained. When the water in the water tank reaches a predetermined water level, water flows in from the overflow pipe and reaches between the large diameter pipe and the drain pipe,
An upward water depth pressure is also applied to the valve element. Therefore, the valve body is floated by the float means, separated from the first valve seat and the second valve seat, and is opened. When the valve body is unseated from the first valve seat and a second valve seat, the water in the water tank is discharged from the drain pipe water level decreases. When the water level falls, the valve body is lowered by the float means, and the valve body is seated on the first valve seat and the second valve seat, so-called a valve is closed, and the discharge of water from the drain pipe is stopped. After that, the above is repeated,
A certain amount of water is automatically drained at regular intervals.

[0007] Preferably, the second valve seat is located slightly above the first valve seat. According to this configuration, after the valve element is seated on the second valve seat, it can be seated on both the second valve seat and the first valve seat, and during that time, water in the overflow pipe can be discharged from the drain pipe. As a result, it is possible to reduce the pressure due to the water in the overflow pipe and bring the valve into contact.

The float means is provided on the valve body and extends upward, a small float provided below the guide rod so as to be able to move up and down, and is provided above the guide rod so as to be able to move up and down and is more buoyant than the small float. A large float, a first stopper provided on the guide rod to restrict the upward movement of the small float, and a water tank provided to support the guide rod so as to be able to ascend and descend, and to move the small float upward and downward of the large float. And a third stopper provided on the guide rod to restrict the upward movement of the large float. With this configuration, the valve body can be accurately lowered in response to a decrease in the water level, and the amount of drainage with respect to the capacity of the water tank can be increased, so that the efficiency can be improved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an automatic quantitative drainage device of the present invention. 2 to 7 are longitudinal sectional views for explaining the operation of the automatic quantitative drainage device. FIG. 8 is a graph showing the relationship between water pressure and buoyancy and water depth.

The automatic quantitative drainage device 1 includes a water tank 2, a water supply pipe 3, a drain pipe 4, a first valve seat 5, a large-diameter pipe 6, a second valve seat 7, a valve body 8, an overflow pipe 9, a float means 10, The main part is constituted from.

The water tank 2 stores water. In this example, the water tank 2 has a side wall 11 and a bottom wall 12, and has a square box shape with an open upper side.

The water supply pipe 3 is provided above the water tank 2 to supply water. In this example, the water supply pipe 3 has an elbow shape and is provided so as to penetrate the upper part of the side wall 11 of the water tank 2. Although not shown, a water supply source such as a water pipe is connected to the water supply pipe 3 through a water supply valve such as a flow control valve.

The drain pipe 4 is provided at the bottom 12 of the water tank 2 to discharge water. In this example, the drain pipe 4 has a circular tubular shape with an inner diameter φB, and is provided through the center of the bottom wall 12 of the water tank 2. Have been. Although not shown, hoses, pipes, and the like that extend to a washing point and the like are connected to the drain pipe 4.

The first valve seat 5 is formed at the upper end of the drain pipe 4.

The large-diameter pipe 6 is provided at the bottom 12 of the water tank 2 with a drain pipe 4.
In this example, the inner diameter φA
And a drain pipe 4 is provided at the center of the bottom wall 12 of the water tank 2.
And a so-called double pipe.

The second valve seat 7 is formed at the upper end of the large-diameter pipe 6. In this example, the second valve seat 7 is formed to be located slightly above the first valve seat 5, and a step S is formed between them. Are formed.

The valve element 8 is seated on and separated from the first valve seat 5 and the second valve seat 7. In this example, the valve element 8 has a disk shape and is made of a rigid material. and a first valve seat 5 and the second valve seat 7 on the valve seat body 14 made by those engaged may elastic material is attached to the lower surface.

The overflow pipe 9 is provided in the water tank 2 and allows water to flow between the drain pipe 4 and the large-diameter pipe 6 when a predetermined water level (water depth) H is reached. The lower end opening 15 is fixed to the large diameter pipe 6 so as to communicate with the space between the drain pipe 4 and the large diameter pipe 6, and the upper end opening 16 is opened upward at a predetermined water level H. are doing.

The float means 10 causes the valve body 8 to rest against the first valve seat 5 and the second valve seat 7 depending on the water depth pressure (water pressure) P until the water level reaches a predetermined water level. In this example, the body 8 is floated and separated from the first valve seat 5 and the second valve seat 7. In this example, the guide rod 17 is provided on the valve body 8 and extends upward, and the guide rod 17 moves up and down below the guide rod 17. A small float 18 provided so as to be able to move, a large float 19 provided above the guide rod 17 so as to be able to move up and down and having a greater buoyancy than the small float 18, and a small float 1 provided to the guide rod 17.
A second stopper 21 for regulating the upward movement of the small float 18 and a second stopper 21 for regulating the upward movement of the small float 18 and the downward movement of the large float 19; , A third stopper 22 provided on the guide rod 17 to regulate the upward movement of the large float 19.

The guide rod 17 is made of a rigid material, and stands upright on the valve body 13 of the valve body 8. The small float 18 generates a buoyancy F1. The small float 18 is made of a buoyancy material, has a cylindrical shape having a through hole 23 at the center, and the guide rod 17 is inserted into the through hole 23 so as to be able to move up and down. The large float 19 generates a buoyancy F, is made of the same buoyancy material as the small float 18, and has a through hole 24 at the center.
The guide rod 17 is inserted into the through hole 24 so as to be able to move up and down, and has a volume (buoyancy) that is approximately five times that of the small float 18.

The first stopper 20 has a C-shaped ring shape and is attached by being fitted into a groove (not shown) formed below the guide rod 17, and the first stopper 20 is provided with the valve body 8, the small float 18, and the like. In order to apply a water depth pressure P to the upper surface of the valve element 18 with a predetermined interval therebetween. Second stopper 21
Has a disc-like shape having a through hole 25 at the center, and has an appropriate number of columns (only one in FIGS. 1 to 7) which is located above the small float 18 and is erected on the bottom wall 12 of the water tank 2. 2)
6 and guides the guide rod 17 so as to be able to move up and down substantially, and when the small float 18 floats, a predetermined gap is provided between the valve body 8 and the first and second valve seats 5 and 7. When the water level H decreases, the large float 19 is supported. The through hole 25 has a size that allows the first stopper 20 to pass therethrough. The strut 26 is also located outside the small float 18 and serves to guide the small float 18 so as to be able to move up and down.
The third stopper 22 has a disk shape and is fixed to the upper end of the guide rod 17.

The apparent specific gravity of the guide rod 17, the small float 18, the first stopper 20, and the third stopper 22 of the float means 10 is larger than that of water, so that they do not float on water. Valve body 8, guide rod 17 of float means 10, small float 18, first stopper 20, and third stopper 22
The apparent specific gravity is smaller than that of water and floats on water. Their own weight is W1. The position of the upper end opening 16 of the overflow pipe 9 is set so that water flows in when the water level H satisfies P ≧ F. First stopper 2
The position of 0 is set so that P> F1-W1.

Next, the operation will be described based on such a configuration. Before the start of water supply in which water from the water supply pipe 3 is not supplied, the small float 18 is placed on the valve body 8 due to the weight W1 of the valve body 8, the guide rod 17 of the float means 10, the first stopper 20, and the third stopper 22. At the same time, the valve seat body 14 of the valve body 8 is seated on the first valve seat 5 and the second valve seat 7 so as to be closed. At this time, the large float 19 of the float means 10 is seated on the second stopper 21 due to its own weight. When water is supplied from the water supply pipe 3, the water is stored in the water tank 2, the small float 18 of the float means 10 floats due to its buoyancy F1, and the water pressure (which increases with the water level H) is placed on the upper surface of the valve body 8 ( The water depth pressure (P) is acted on, whereby the valve body 8 and the first valve seat 5 and the second valve seat 7 are kept in a contact state (see FIG. 2). Then, the small float 18 is raised until it comes into contact with the first stopper 20 (see FIG. 3). After that, the small float 18 also has a water pressure P
Is actuated, so that it is positioned downward and away from the first stopper 20 (see FIG. 4).

When the water level H further rises, the large float 19
Floats and comes into contact with the third stopper 22 so that the valve body 8
Is given an upward lifting force F (see FIG. 4). When a predetermined water level H is reached, the upper end opening 16 of the overflow pipe 9 is opened.
Water flows into the drain pipe 4 and the large-diameter pipe 6, and the water pressure P is also applied to the lower surface of the valve body 8 (see FIG. 5). For this reason, the water pressure P received on the upper surface of the valve body 8 drops rapidly,
<F, a pulling force (see FIG. 8) is generated, the seat is separated from the first valve seat 5 and the second valve seat 7, and the valve is opened. Then, the water in the water tank 2 is discharged from the space between the valve body 8 and the first valve seat 5 and the second valve seat 7 through the drain pipe 4 (FIG. 6).
reference).

When the water level H decreases with the drainage, the large float 19 descends and is seated against the second stopper 21, and the small float 18 is maintained in a floating state, and the valve body 8 is moved to the first position. The valve is kept open from the valve seat 5 and the second valve seat 7 (see FIG. 7). When the valve body 8 comes into contact with the second valve seat 7, the valve seat body 14 of the valve body 8 is pressed against the second valve seat 7 and the first valve seat 5 by the water depth pressure P, so that the valve is closed. Therefore, drainage is stopped (see FIG. 2). At this time, the valve 8
Is provided with an elastically deformable valve seat 14 and the second valve seat 7 is located slightly above the first valve seat 5, so that the valve 8 is seated on the second valve seat 7. After that, it can be seated on both the second valve seat 7 and the first valve seat 5, while the water in the overflow pipe 9 can be drained from the drain pipe 4. As a result, the valve element 8 can be brought into contact with the pressure reduced by the water in the overflow pipe 9. Thereafter, the above operations are repeated, and a fixed amount of water is automatically discharged at regular intervals. By adjusting the water supply valve to increase or decrease the amount of water from the water supply pipe 3, the storage time and the drainage time can be changed.

Although the second valve seat 7 is located slightly above the first valve seat 5 in the above example, the present invention is not limited to this.
For example, it may be flush with the first valve seat 5. Floating means 10
In the above example, two floats, the small float 18 and the large float 19, are used. However, the present invention is not limited to this, and one or three or more floats may be used. In the above example, the float means 10 includes the guide rod 17, the small float 18, the large float 19, the first stopper 20, and the second stopper 21.
And the third stopper 22, but the invention is not limited to this, and an appropriate structure may be adopted.

[0027]

As described above, according to the present invention, as described above,
The following excellent effects can be obtained. (1) A water tank, a water supply pipe, a drain pipe, a first valve seat, a large diameter pipe, a second valve seat, a valve body, an overflow pipe, and a float means, particularly provided concentrically with a drain pipe at the bottom of the water tank. A large-diameter pipe provided in the water tank, an overflow pipe for allowing water to flow between the drain pipe and the large-diameter pipe when the water level reaches a predetermined level, and a valve body until the water level reaches a predetermined level. Because it is provided with a float means for abutting the first valve seat and the second valve seat depending on the pressure and floating the valve body when a predetermined water level is reached to separate from the first valve seat and the second valve seat. In addition, a power source such as a power source or an artificial operation is unnecessary, and a certain amount of water can be automatically discharged.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an automatic quantitative drainage device of the present invention.

FIG. 2 is a longitudinal sectional view for explaining the operation of the automatic quantitative drainage device.

FIG. 3 is a view similar to FIG. 2;

FIG. 4 is a view similar to FIG. 2;

FIG. 5 is a view similar to FIG. 2;

FIG. 6 is a view similar to FIG. 2;

[7] the same view as in FIG. 2.

FIG. 8 is a graph showing the relationship between water pressure and buoyancy and water depth.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Automatic fixed-quantity drainage device, 2 ... Water tank, 3 ... Water supply pipe, 4 ... Drainage pipe, 5 ... First valve seat, 6 ... Large diameter pipe, 7 ... Second valve seat, 8 ...
Valve element, 9: overflow pipe, 10: float means, 1
DESCRIPTION OF SYMBOLS 1 ... Side wall, 12 ... Bottom wall, 13 ... Valve main body, 14 ... Valve seat body,
15: lower end opening, 16: upper end opening, 17: guide rod, 1
8 small float, 19 large float, 20 first stopper, 21 second stopper, 22 third stopper, 23
Through-hole, 24 ... Through-hole, 25 ... Through-hole, 26 ... Support, φA,
φB: inner diameter, F, F1: buoyancy, H: water level (water depth), P:
Water pressure (water depth pressure), S: step, W1: self-weight.

Claims (3)

[Claims] 1. A water tank for storing water, a water supply pipe provided at an upper part of the water tank to supply water, a drain pipe provided at a bottom part of the water tank to discharge water, and formed at an upper end of the drain pipe. The first valve seat, a large-diameter pipe provided substantially concentrically with the drain pipe at the bottom of the water tank, a second valve seat formed at the upper end of the large-diameter pipe, and a first valve seat and a second valve seat. The valve body to be seated and detached, the overflow pipe provided in the water tank to flow water between the drain pipe and the large-diameter pipe when the water level reaches a predetermined level, and the valve body until the water level reaches the predetermined level. Float means for abutting the first valve seat and the second valve seat according to the water depth pressure and floating the valve body when the water level reaches a predetermined level to separate from the first valve seat and the second valve seat. An automatic quantitative drainage device. 2. The automatic metering and drainage device according to claim 1, wherein the second valve seat is located slightly above the first valve seat. 3. A float means provided on the valve body and extending upward, a small float provided below the guide rod so as to be movable up and down, and a small float provided above the guide rod so as to be movable up and down. A large float having greater buoyancy, a first stopper provided on the guide rod to regulate the upward movement of the small float, and a water tank provided to support the guide rod so as to be able to move up and down, and to increase the movement of the small float and the large float. The automatic constant-quantity drainage device according to claim 1, further comprising a second stopper that regulates downward movement, and a third stopper that is provided on the guide rod and regulates upward movement of the large float.