JPH08148139A - Constant-level liquid feeding device - Google Patents

Abstract

PURPOSE: To provide a constant-level liquid feeding device surely setting the liquid level at the prescribed level without monitoring the liquid level by detecting a reference face with a detection section at the tip of d detecting rod and releasing a valve. CONSTITUTION: A constant-level liquid feeding device 1 is gradually lowered in a battery jar 31 while a container 2 is held above and a water filling pipe 11 is held below in the feeding state. When a detection section at the tip section 11a of the water filling pipe 11 is brought into contact with a reference face 32, the descent of the container 2 is stopped. The detection section is brought into contact with the reference face 32, and a detecting rod 21 moves a valve 14 upward while compressing a spring 23 to release the water filling pipe 11. The atmospheric air is released into the container 2 via a water level setting hole 16, and the distilled water in the container 2 is fed into the battery jar 31 in sequence through the water filling pipe 11 and an opening section 15. When the container 2 is lowered in the battery jar 31 until it is stopped while being held in the liquid feeding state, the liquid in the container 2 is fed into the battery jar 31. When the liquid is fed to the prescribed level H1 , the feed of liquid is automatically stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant water level liquid supply device capable of reliably setting a liquid level to a predetermined water level when supplying a liquid to a tank.

[0002]

2. Description of the Related Art Conventionally, when supplying distilled water to a tank, for example, a battery tank of a storage battery for an automobile, the distilled water is supplied while monitoring the liquid level, and the supply is terminated when a predetermined water level is reached.

[0003]

However, it may be difficult to see the inside of the battery case depending on the material of the battery case or the illumination condition, and it is difficult to accurately estimate the liquid level.
Further, even if the inside of the battery case is bright, depending on the viewing angle, when light is reflected, there is a problem that the error of the water level becomes large. When the water level becomes high, the liquid temperature rises when the storage battery operates, and the liquid overflows from the battery case. Since sulfuric acid is used for the storage battery, when the liquid overflows, there is a problem that the surroundings are corroded or a person is injured by burns.

The present invention has been made in view of the above circumstances. An object of the present invention is to provide a constant water level that can reliably set the liquid level to a predetermined water level without monitoring the liquid level when supplying the liquid. A liquid supply device is provided.

[0005]

According to a first aspect of the present invention, there is provided a constant water level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, and a container having a drain port for containing the liquid. A water injection pipe attached to the drainage port of this container and having its tip end in contact with the reference surface in the liquid supply state with the container up, and the water injection pipe provided at the base end of this water injection pipe and opened or closed. Control valve to keep the valve closed at all times, a detection rod that detects the reference surface in the liquid supply state to open the valve, and a water injection pipe that corresponds to a predetermined water level in the tank. It is characterized in that it is provided with a set water level setting hole.

According to a second aspect of the present invention, there is provided a constant water level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, the container having a drain port for containing the liquid, and the drain port of the container. A water injection pipe that is attached and has a water level setting part at the tip,
A valve provided at the base end of this water injection pipe to control the water injection pipe to an open or closed state, which is normally kept closed, and the reference surface in the liquid supply state with the container above is detected. It is characterized in that it is provided with a detector for opening the valve and a stopper for setting the water level setting unit at a height corresponding to a predetermined water level in the tank in the liquid supply state.

According to a third aspect of the present invention, there is provided a constant level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, and a container having a drain port for containing the liquid and movable to the container. The water injection pipe which is attached and has a water level setting portion at its tip, and a valve which is provided at the base end of this water injection pipe and controls the water injection pipe to be in an open or closed state, and is normally kept in a closed state, It is characterized in that it is provided with a detector provided in a water pipe and detecting the reference surface to open the valve in a liquid supply state with the container facing upward.

According to the constant water level liquid supply apparatus of the first aspect of the invention, when the container for containing the liquid is placed in the liquid supply state and the container is lowered and inserted into the tank, the tip of the water injection pipe is The descent of the container is stopped by contacting the reference surface of the tank, and the detection rod detects the reference surface and opens the valve. As a result, the liquid in the container is supplied to the tank. When the water level in the tank gradually rises and the water level setting hole is closed, the inside of the container is closed.
Then, when the water level in the tank further rises and reaches a predetermined water level, the pressure inside and outside the container is balanced and the supply of the liquid is automatically stopped.

According to the constant water level liquid supply device of the second aspect of the invention, when the container for containing the liquid is placed in the liquid supply state and the container is inserted into the tank, the detection unit contacts the reference surface of the tank. The valve contacts and opens the valve, and the valve contacts the stopper to stop the descending of the container. Then, the water level setting unit is installed at a height corresponding to a predetermined water level in the tank, and the liquid in the container is supplied to the tank. When the water level in the tank gradually rises and the water level setting part is closed, the inside of the container becomes a sealed state, and when the water level in the tank further rises and reaches a predetermined water level, the liquid supply is automatically stopped. .

According to the constant water level liquid supply apparatus of the third aspect of the present invention, when the container for containing the liquid is placed in the liquid supply state and the container is inserted into the tank, the detection unit contacts the reference surface of the tank. The valve is opened upon contact, and the water level setting unit is installed at a height corresponding to the predetermined water level in the tank. Then, the liquid in the container is supplied to the tank. When the water level in the tank gradually rises and the water level setting part is closed, the inside of the container becomes a sealed state, and when the water level in the tank further rises and reaches a predetermined water level, the liquid supply is automatically stopped. .

[0010]

EXAMPLE A constant water level liquid supply apparatus 1 according to claim 1 will be described below.
The first embodiment will be described with reference to FIGS.
First, in FIG. 2, the container 2 is formed of a synthetic resin such as polyethylene resin, and a screw 4 is formed around the drainage port 3 at the upper end portion. The container 2 contains a liquid such as distilled water, and a handle 5 is integrally provided on the side surface. The water injection pipe 11 is attached to the container 2 by screwing an internal thread 12 formed at the end thereof to the screw 4. A valve seat 13 is formed at the base end portion of the water injection pipe 11, and a valve 14 is provided corresponding to the valve seat 13.
1 is controlled to an open or closed state. Four long groove-shaped openings 15 are formed at the tip of the water injection pipe 11.

The detection rod 21 moves up and down in the water injection pipe 11, one end thereof penetrates the valve seat 13 and is connected to the valve 14, and the other end thereof projects outside the water injection pipe 11. .
The detection rod 21 has a collar portion 22 protruding from the middle portion thereof, and a spring 23 interposed between the collar portion 22 and the valve seat 13 causes the valve 14 to be pressed against the valve seat 13 so that the valve 14 is constantly injecting. Water pipe 11
Is kept closed.

FIG. 1 shows a tank 31 from a constant level liquid supply apparatus 1.
This shows a state in which the liquid is supplied to the tank 31. The tank 31 has a flat bottom surface serving as a reference surface 32. In the liquid supply state with the container 2 facing up, the tip portion 11a of the water injection pipe 11
Touches the reference surface 32 and stops. In addition, the detection rod 21
The detector 21a at the tip is configured to detect the reference surface 32 and open the valve 14. The water level setting hole 16 is formed at an intermediate portion of the water injection pipe 11 and at a position corresponding to the predetermined water level H1 of the tank 31, that is, at a position of H2 (H1> H2) from the tip. In the above embodiment, the opening 1
Although the water level setting hole 5 and the water level setting hole 16 are provided independently of each other, they may be communicated with each other and integrated.

By the way, in the case of the storage battery 41 for an automobile, as shown in FIGS. 3 and 4, a large number of electrode plates 43 are arranged in a battery case 42 as a tank, and the upper end portion of the electrode plate 43 is arranged. Is the reference plane 32. Then, the distilled water is supplied to a predetermined water level H1 above the reference surface 32. Since a large number of these electrode plates 43 are arranged in parallel at intervals, the reference surface 32 at the upper end has an uneven shape. In such a case, as shown in FIGS. 3 and 4, a disc-shaped detection unit 24 may be attached to the tip of the detection rod 21.

The detector 24 is made of a non-conductive material such as synthetic resin, and is constructed so as to straddle at least two electrode plates 43. The diameter of this electrode plate 43 is
Since the diameter is larger than the diameter of the reference surface 3 in the liquid supply state, the tip portion 11a of the water injection pipe 11 is connected to the reference surface 3 via the detection portion 24.
It comes into contact with 2. An appropriate distance is provided between the lid 44 and the water level line to prevent overflow.

Further, the distance H3 from the tip of the water level setting hole 16 provided in the water injection pipe 11 is equal to the thickness H4 of the detector 24.
Then, the relationship of H2 = H3 + H4 is established. When the valve 14 closes the water injection pipe 11, a gap is formed between the tip portion 11a of the water injection pipe 11 and the detection unit 24 (see FIG. 4).

Next, referring to FIGS. 3 and 4, as a typical example of supplying liquid using the constant water level liquid supply apparatus 1 having the above-mentioned configuration, in the case of supplying distilled water to the battery case 42 of the storage battery 41 for an automobile. Will be described. First, the water injection pipe 11 is removed to supply the container 2 with distilled water. The female screw 12 is screwed onto the screw 4, and the water injection pipe 11 is attached to the container 2. The valve 14 is the valve seat 13
And the water injection pipe 11 is closed.

Therefore, the container 2 is held in the upper state and the water injection pipe 11 is kept in the lower state, and the constant water level liquid supply device 1 is connected to the battery case 4.
When the tip end portion 11a of the water injection pipe 11 comes into contact with the reference surface 32 via the detection portion 24, the lowering of the container 2 is stopped. In the middle of this, the detection portion 24 contacts the reference surface 32, and the detection rod 21 compresses the spring 23 and the valve 14
Is moved upward and the water injection pipe 11 is opened. In this case, since the inside of the container 2 is open to the atmosphere through the water level setting hole 16, the distilled water in the container 2 is not supplied to the water injection pipe 11 and the opening 15.
It is sequentially supplied into the battery case 42 through the.

When the water level in the battery case 42 rises to reach the water level H2, the water level setting hole 16 is closed and the container 2 is sealed. Therefore, the pressure in the container 2 decreases as the distilled water in the container 2 is discharged. Then, when the water level in the battery case 42 rises to a predetermined water level H1, the pressure inside and outside the container 2 is balanced and the discharge of distilled water is automatically stopped. Then, the container 2 can be pulled up. Tip part 11a of water injection pipe 11
Is separated from the reference surface 32, the valve 14 is pressed against the valve seat 13 by the elastic force of the spring 23 to close the water injection pipe 11, so that the distilled water does not spill even when the container 2 is pulled up. When the predetermined water level H1 is changed, the detection units 21a, 24
The distance between the water level setting hole 16 and the water level setting hole 16 may be changed.

According to the above-described embodiment, if the container 2 is held in the liquid supply state and lowered into the tanks 31 and 42 until the container 2 stops, the liquid in the container 2 enters the tanks 31 and 42. Supplied. Then, when the liquid is supplied to the predetermined water level H1, the supply of the liquid is automatically stopped, so that the handling becomes extremely easy, and even if the tanks 31 and 42 are dark, the liquid can be reliably set to the predetermined water level. It has the excellent effect of being able to

FIG. 5 shows a second embodiment of the first embodiment.
The difference from the embodiment is that four guide pieces 25 for the water injection pipe 11 are provided at the base of the detection rod 21, and a spring 23 is interposed in the tip small diameter portion 17 of the water injection pipe 11. The second embodiment also has the same effect as that of the first embodiment.

6 to 8 show a third embodiment of the constant water level liquid supply device 51 according to the second aspect. Less than,
Differences from the first embodiment will be described. Water injection pipe 11
Is attached to the container 2 by screwing the female screw 12 onto the screw 4. A bulging portion 52 is formed at the base end of the water injection pipe 11, and a valve 53 is housed therein. The valve 53 is pressed against the valve seat 13 to open and close the water injection pipe 11, and the opposite end 53a has a cross-shaped cross section (see FIG. 8).

Further, a rod-shaped detector 54 having a cross-shaped cross section is inserted through the water injection pipe 11. The detector 54 has one end connected to the valve 53 and the other end protruding from the water injection pipe 11. The end face of the drainage port 3 of the container 2 is the end 5 of the valve 53.
A stopper 55 with which 3a abuts is formed, and a spring 56 is interposed between this stopper 55 and the valve 53.
The tip of the water injection pipe 11 constitutes a water level setting unit 57.

Next, the constant water level liquid supply device 51 having the above structure
A case will be described in which distilled water is supplied to the battery case 42 of the storage battery 41 for an automobile using. First, the container 2 is replenished with distilled water, the container 2 is held in the upper state and the water injection pipe 11 is kept in the lower state, and the constant water level liquid supply device 51 is gradually lowered into the battery case 42. When the detection unit 54 contacts the reference surface 32, the valve 53 is pushed up and the water injection pipe 11 is opened. And
When the end portion 53a of the valve 53 comes into contact with the stopper 55, the descending of the container 2 is stopped, and the water level setting portion 57 at the tip of the water injection pipe 11 is set at a predetermined position.

Since the end portion 53a of the valve 53 has a cross shape, the liquid in the container 2 is sequentially supplied from the drain port 3 into the battery case 42 via the water injection pipe 11. When the water level in the battery case 42 rises and the water level setting unit 57 is closed, the container 2 is in a sealed state. Therefore, the pressure in the container 2 decreases as the distilled water in the container 2 is discharged. And the battery case 42
When the water level inside rises to a predetermined water level H1, the pressure inside and outside the container 2 is balanced and the discharge of distilled water is automatically stopped. Therefore, when the container 2 is pulled up, the valve 53 is pressed against the valve seat 13 and the water injection pipe 11 is closed by the elastic force of the spring 56, so that distilled water does not spill even if the container 2 is pulled up.

9 and 10 show a fourth embodiment of the constant water level liquid supply device 61 according to the third aspect. The differences from the third embodiment will be described below. Container 2
A cylindrical mounting member 62 having a female screw 12 is attached to the container 2 by being screwed onto the screw 4 at the end of the drainage port 3. The valve seat 13 is formed on the mounting member 62, and the valve 14 for the valve seat 13 is provided. An insertion hole 63 is formed in the mounting member 62, and a water injection pipe 64 is formed in the insertion hole 63.
Is movably inserted. When the water injection pipe 64 moves, water does not leak between the water injection pipe 64 and the insertion hole 63.

One end of the water injection pipe 64 is attached integrally with the valve 14, and the other end constitutes a water level setting section 57. In addition, a plurality of outflow holes 6 are provided in the water injection pipe 64 near the valve 14.
5 is formed. The detection unit 66 has an annular shape and is attached to the middle portion of the water injection pipe 64. Although not shown, this is fixed to the water injection pipe 64 by a screw, and the distance H5 from the water level setting unit 57 can be changed. A spring 67 is interposed between the detection unit 66 and the mounting member 62.

When the constant water level liquid supply device 61 is used to supply distilled water to the battery case 42 of the storage battery 41 for an automobile, the upper surface of the lid 44 of the storage battery 41 serves as the reference surface 32. First, when the container 2 is replenished with distilled water and kept in the supply state, and the constant water level liquid supply device 61 is gradually lowered into the battery case 42, the detection unit 66 contacts the reference surface 32 and pushes the valve 14. And the outflow hole 65 is opened. Then, the water level setting unit 57 at the tip of the water injection pipe 11 is set at a predetermined position.

The liquid in the container 2 flows from the drainage port 3 to the outflow hole 6
5, it is sequentially supplied into the battery case 42 via the water injection pipe 64. When the water level in the battery case 42 rises and the water level setting unit 57 is closed, the container 2 is in a sealed state. Therefore, container 2
The pressure in the container 2 is reduced as the distilled water is discharged. Then, when the water level in the battery case 42 rises to a predetermined water level H1, the pressure inside and outside the container 2 is balanced and the discharge of distilled water is automatically stopped.

Then, when the container 2 is pulled up, the spring 6
Since the valve 14 is pressed against the valve seat 13 by the elastic force of 7 to close the water injection pipe 11, distilled water does not spill even when the container 2 is pulled up. Also in these third and fourth embodiments, the same effect as that of the first embodiment is obtained.
When changing the predetermined water levels H1 and H5, the detection unit 5
The distance between 4, 66 and the water level setting unit 57 may be changed.

[0030]

According to the first aspect of the present invention, there is provided a constant level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, the container having a drain port for containing the liquid, and the drainage of the container. In a liquid supply state in which the container is attached to the mouth and the tip is in contact with the reference surface, a water injection pipe, and the water injection pipe provided at the base end of the water injection pipe is controlled to an open or closed state, A valve that is normally kept closed, a detection rod that detects the reference surface in the liquid supply state and opens the valve, and a water level setting provided in the water injection pipe corresponding to a predetermined water level in the tank Since it has a hole, if the container is lowered into the tank until it stops, the detector comes into contact with the reference surface of the tank and the liquid in the container is supplied to the prescribed water level in the tank and automatically stops. Therefore, handling is extremely easy, and even if the inside of the tank is dark The one in which there is an effect that it is possible to set a predetermined water level.

According to a second aspect of the present invention, there is provided a constant water level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, the container having a drain port for containing the liquid, and the drain port of the container. A water injection pipe that is attached and has a water level setting part at the tip,
A valve provided at the base end of this water injection pipe to control the water injection pipe to an open or closed state, which is normally kept closed, and the reference surface in the liquid supply state with the container above is detected. Since the detection unit for opening the valve and the stopper for setting the water level setting unit at the height corresponding to the predetermined water level of the tank in the liquid supply state are provided, the handling becomes remarkably easy, and the inside of the tank is dark. Even in such a case, it is possible to reliably set a predetermined water level.

According to a third aspect of the present invention, there is provided a constant level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, and a container having a drain port for accommodating the liquid and movable to this container. The water injection pipe which is attached and has a water level setting portion at its tip, and a valve which is provided at the base end of this water injection pipe and controls the water injection pipe to be in an open or closed state, and is normally kept in a closed state, Since it is provided with a detection unit which is provided in the water pipe and detects the reference surface in the liquid supply state with the container facing upward and opens the valve, the handling is remarkably easy, and even if the inside of the tank is dark, it can be surely performed. The effect is that the water level can be set to a predetermined level.

[0033]

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a state where water is supplied to a tank having a flat reference surface by a first embodiment of a constant water level liquid supply apparatus.

FIG. 2 is a vertical sectional front view of the constant water level liquid supply device according to the first embodiment.

FIG. 3 is a vertical cross-sectional front view showing a state where water is supplied to a tank having a reference surface that is uneven.

FIG. 4 is a vertical cross-sectional front view showing a state in which water supply is completed in a tank having an uneven reference surface.

FIG. 5 is a vertical cross-sectional front view showing a state in which water is being supplied to a tank having an uneven reference surface according to the second embodiment.

FIG. 6 is a vertical sectional front view showing a process of supplying water to a tank having an uneven reference surface according to the third embodiment.

FIG. 7 is a vertical cross-sectional front view showing a state in which water is being supplied to a tank whose reference surface is uneven.

FIG. 8 is a perspective view of a valve and a detection unit.

FIG. 9 is a vertical cross-sectional front view showing a process of supplying water to a tank having an uneven reference surface according to a fourth embodiment.

FIG. 10 is a vertical cross-sectional front view showing a state where water is supplied to a tank having a reference surface that is uneven.

[Explanation of symbols]

 1 Constant Water Level Liquid Supply Device 2 Container 3 Drainage Port 11 Water Injection Pipe 11a Detector 13 Valve Seat 14 Valve 15 Opening 16 Water Level Setting Hole 21 Detector Rod 21a Detector 23 Spring 31 Tank 32 Reference Surface 42 Battery (Tank) 43 Electrode Board

Claims (3)

[Claims] 1. A constant water level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, a container having a drain port for containing the liquid, and the container attached to the drain port of the container. In the liquid supply state with the upper side, the tip end portion is in contact with the reference surface, and the water injection pipe is provided at the base end portion of the water injection pipe to control the water injection pipe to the open or closed state, and is normally kept in the closed state. A valve, a detection rod that opens the valve by detecting the reference surface in the liquid supply state, and a water level setting hole provided in the water injection pipe corresponding to a predetermined water level in the tank. A characteristic constant level liquid supply device. 2. A constant water level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, and a container having a drain port for containing the liquid, and a tip portion attached to the drain port of the container. A water injection pipe having a water level setting part, a valve provided at the base end of the water injection pipe to control the water injection pipe to an open or closed state, and normally kept in a closed state; A detector for detecting the reference surface to open the valve in a supply state; and a stopper for setting the water level setting unit at a height corresponding to a predetermined water level in the tank in the liquid supply state, Constant water level liquid supply device. 3. A constant water level liquid supply device for supplying a liquid to a predetermined water level in a tank having a reference surface, and a container having a drain port for containing the liquid, and a tip part movably attached to the container. A water injection pipe having a water level setting unit, a valve provided at the base end of the water injection pipe to control the water injection pipe to an open or closed state, and normally kept in a closed state; A constant water level liquid supply device, comprising: a detection unit that detects the reference surface and opens the valve in a liquid supply state with the container facing up.