JPS6158679B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a siphon device used for moving liquid.

[Conventional technology]

Two methods are known for automatic stop devices for this type of siphon device.The first method directly stops the movement of liquid, and uses an airtight storage tank to store the liquid at the liquid level in the individual tank. One that stops the supply of air to the tank (Utility Model Publication No. 49-8487), and one that attaches a float valve to the tip of the discharge pipe and closes the valve directly depending on the liquid level in the individual tank (Utility Model Publication No. 51-23369).
No.).

The second method is to stop the siphon effect of the siphon device, and there is a method that opens an air valve using a float on the individual tank side to supply air into the siphon device (Japanese Utility Model Publication No. 48-52202).

[Problem that the invention seeks to solve]

By the way, if liquid remains in the suction or discharge pipes when the siphon device automatically stops, the siphon device cannot be removed as it is, and the liquid must be drained before removal, which inevitably causes inconvenience in handling. It was hot.

Also, the thing that stops the movement of liquid by stopping the siphon effect is that the amount of air required to stop the siphon effect differs depending on the amount of liquid stored in the siphon operation part, and the pipe that supplies air varies. If a droplet enters the container, pressure is required to counter the surface tension, and variations in the liquid level at which the liquid stops are unavoidable.

[Means for solving problems]

This invention solves the above problems by using an airtight storage tank system in which the liquid level of each individual tank can be stopped at an accurate position. The tube 3 is a siphon operating section, which constitutes a grip cylinder type siphon device. Reference numeral 4 indicates a liquid storage tank, and 5 indicates an individual tank, in which liquid is transferred from the upper storage tank 4 to the lower individual tank by differential pressure. Reference numeral 7 designates an outer pipe longer than the suction pipe 1. The upper part is enlarged and attached to the upper surface of the storage tank 4, and the lower part is exposed to the bottom surface of the storage tank 4. It communicates with the outside air through the enlarged part. Also, outer tube 7
The suction pipe 1 of the siphon device is inserted from above, and 6 is a gap between the suction pipe 1 and the outer pipe 7. 8 is an air pipe provided in the storage tank 4, and the storage tank 4 communicates with the outside air via the air pipe 8.

10 is the liquid injection port of the individual tank 5, and 11 is the discharge pipe 2 of the siphon device and the air pipe 8 of the storage tank 4.
It is an individual tank fitting that holds a
1 is attracted around the liquid inlet 10 by an attached magnet, and the tip of the discharge pipe 2 and the tip opening 9 of the air pipe 8 are located in the individual tank 5. 12
is a liquid supply lid of the storage tank 4, and is provided above the enlarged upper part of the outer tube 7.

[Explanation of action]

Therefore, in order to store liquid in the storage tank 4, it is only necessary to open the lid 12 and pour the liquid into the storage tank 4.
The air inside is discharged through an air pipe 8.

Next, in order to move the liquid to the individual tank 5 by differential pressure, connect the opening 9 of the air pipe 8 and the discharge port of the discharge pipe 2 from the liquid inlet 10 into the individual tank 5 using the fitting 1.
1, etc., and when the siphon operating section 3 sucks out the liquid from the suction pipe 1 and causes it to flow out from the discharge pipe 2, the liquid in the storage tank 4 is transferred to the individual tank 5 due to the siphon effect due to the differential pressure. leak.

That is, the inside of the storage tank 4 communicates with the outside air through the opening 9 of the air pipe 8 located in the individual tank 5, and the inside of the outer pipe 7 also communicates with the outside air, so that the storage tank 4 and the outer pipe 7 are connected to each other. Both of them maintain the same liquid level at atmospheric pressure, and when the suction pipe 1 and the discharge pipe 2 are filled with liquid by operating the siphon operation part 3, the liquid in the outer pipe 7 flows into the storage tank 4, which has high potential energy. Individual tank 5 where the liquid has low potential energy
It is something that flows out to.

By the way, since the opening 9 of the air pipe 8 is located inside the individual tank 5, the liquid level in the individual tank 5 eventually rises and when the opening 9 of the air pipe 8 is closed, the liquid inside the individual tank 5 is sucked into the storage tank 4. When air no longer flows in and the liquid level in the storage tank 4 and the liquid level sucked into the air pipe 8 become the same, the storage tank becomes a sealed tank. In the case of a conventional airtight storage tank, the siphon device is stopped with the liquid filled at this time, but in this invention, the liquid in the outer tube 7 is moved through the suction tube.
After the storage tank 4 becomes a closed tank, the liquid in the gap 6 flows out. Eventually, since the outer pipe 7 is longer than the suction pipe 1, when the gap 6 is filled with air, the suction pipe 1 sucks air and fills the suction pipe 1 and the discharge pipe 2 with air, and the siphon effect stops, so the storage tank 4
The outflow to the individual tank 5 is stopped. Therefore, the thickness of the outer tube 7 is related to the flow rate flowing out to the individual tank 5 after forming a sealed tank, and it is preferable that the outer tube 7 be as thin as possible within a range that satisfies the liquid injection capacity.

On the other hand, the discharge pipe 2 and air pipe 8 are connected to the individual tank 5.
When removed from the storage tank 4, air is sucked in from the air pipe 8 and flows into the outer pipe 7, so that the liquid levels in the storage tank 4, the outer pipe 7, and the suction pipe 1 are kept constant. The same volume of air or liquid as the volume of liquid flowing into the pipe 7 flows into the air pipe 8.
By appropriately setting the positional relationship between the distal end outlet of the discharging pipe 2 and the distal opening 9 of the air pipe 8, droplets of liquid adhering to the inner and outer surfaces of the discharging pipe 2 can be removed. It is also possible to return the air to the storage tank through the opening 9 of the air pipe 8.

〔Effect of the invention〕

As described above, in this invention, liquid is injected into the storage tank 4 through the outer tube 7, and the problem of inability to automatically stop the liquid due to poor adhesion of the liquid injection lid, which occurs in conventional automatic stop devices for closed tanks, is avoided. It was completely preventable.

Furthermore, after the liquid level in the individual tank 5 touches the opening 9 of the air pipe 8 and the inflow is stopped, the amount of liquid flowing into the individual tank 5 is determined by adjusting the amount inside the outer pipe 7, suction pipe 1, discharge pipe 2, and siphon. Since it is only the liquid inside the tank, the flow rate from the stop signal to the complete stop of inflow hardly changes, and if the opening of the air pipe is set in consideration of this flow rate, a very accurate stop liquid level can be obtained. Furthermore, since the factor that causes the stopped liquid level to vary is the remaining amount in the storage tank, which can be specified, wide fluctuations are unlikely.

Furthermore, in this invention, since there is no liquid in the suction pipe 1, discharge pipe 2, and siphon operation part 3 during automatic stop, no special operation is required when removing the discharge pipe 2 from the individual tank 5, and handling errors may occur. It has excellent features that cannot be found anywhere else.

[Brief explanation of the drawing]

The figure is a sectional view of this invention. DESCRIPTION OF SYMBOLS 1...Suction pipe, 2...Discharge pipe, 3...Siphon operation section, 4...Storage tank, 5...Individual tank, 6...Gap, 7...Outer pipe, 8...Air pipe, 9... Aperture.

Claims (1)

[Scope of Claims] 1. In a siphon device in which a siphon operation unit 3 is provided between the suction pipe 1 and the discharge pipe 2, and the liquid is moved from the storage tank 4 to the individual tank 5 by differential pressure, A long outer pipe 7 is attached so that the upper part is in close contact with the upper surface of the storage tank 4 and the lower part is exposed to the bottom surface of the storage tank 4, and the inside of the outer pipe 7 is communicated with the outside air, and the storage tank 4 is communicated with the outside air. An air pipe 8 is provided, the suction pipe 1 is inserted into the outer pipe 7, and the distal end of the discharge pipe 2 and the distal opening 9 of the air pipe 8 are positioned within the individual tank 5.
An automatic stop device for a siphon device, characterized by setting the liquid level of the siphon device. 2 The upper part of the outer pipe 7 is enlarged, and the inside is the storage tank 4.
An automatic stop device for a siphon device according to claim 1, which forms a liquid inlet.