JPS6215759B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that is attached to a siphon type pump that divides liquid from a large container into small containers by siphon action, and automatically stops the siphon action.

A typical type of siphon pump is a grip cylinder type pump.This pump has a connecting cylinder at the bottom of the grip cylinder that can be freely compressed and restored.A discharge hose is connected to the side of this connection cylinder, and a suction pipe is connected to the bottom of the cylinder. The pipes are connected, and check valves are installed on the discharge hose side and the suction pipe side in the connecting cylinder, and by compressing and restoring the grip cylinder, the liquid in the suction pipe is sucked up and discharged into the discharge hose. After the suction pipe, connecting tube, and discharge hose are filled with liquid, it is continuously pumped out using a siphon action.

By the way, when liquid is divided into portions using a pump that has a siphon effect, such as the above-mentioned grip cylinder type pump,
If you take your eyes off the container during dispensing work, unless the height of the liquid level on the suction side and the liquid level on the discharge side is reversed, the liquid will continue to be pumped up due to the siphon effect, causing the problem that the dispensing container will be filled with liquid and overflow. .

Various ideas have been devised as means to prevent this overflow. For example, as described in Japanese Utility Model Application Publication No. 48-109504, small holes for air inflow are provided at equal intervals along the entire length of the suction pipe, and an outer cylinder with a short number of small holes is attached to the suction pipe, and each outer cylinder is A small hole that can match the small hole is formed in the cylinder, and the outer cylinder that corresponds to only one of the small holes in the suction pipe is rotated to make both small holes coincide with each other, so that both small holes are used as the air introduction part. When the air introduction part is in the liquid, liquid is also sucked from here, and when the liquid level falls below this air introduction part, air is sucked in and the siphon action stops, that is,
The small holes of the outer cylinder and suction pipe are aligned with the predicted liquid level line corresponding to the discharge amount (pumping amount) to form an air introduction section, and the liquid above the air introduction section is sucked up and divided into the required amount. be.

However, this device has a structure with many small holes in the suction pipe and each small hole is closed with its own short outer cylinder, so it is difficult to reliably close each small hole airtight, and in the unlikely event that liquid If the outer cylindrical part above the surface lacks airtightness, there is a problem that the siphon action and siphon stopping action will be uncertain, and since it can only be adjusted by the position where the small hole is formed, the discharge volume (pumping volume) cannot be adjusted finely. Not adjustable, i.e. cannot be adjusted continuously.

In addition, as described in Japanese Utility Model Application Publication No. 50-113903, one main air pipe is pulled out from the grip tube and connected to a switching operation panel attached to the side of the grip tube. By connecting and hanging down multiple different sub-air pipes and operating the slide piece on the switching operation panel, any one of the sub-air pipes is connected to the main air pipe. A device has also been devised that stops the siphon action by sucking in air when the lower end of the siphon leaves the liquid surface.

However, this device also requires precision machining between the switching operation panel and the slide piece in order to reliably connect the main air pipe connected to the switching operation panel to the selected auxiliary air pipe, making it expensive. If the airtightness is uncertain, the siphon effect will not occur, making it unsuitable for this type of siphon type pump, and the discharge volume can only be adjusted by the number of lengths and shorts of each sub-air pipe, that is, it cannot be adjusted continuously. There's a problem.

This invention solves the above-mentioned drawbacks of the conventional automatic stopping mechanism for siphon action, and its purpose is to provide only one air pipe for stopping the siphon action, whose length is variable. It is.

That is, the automatic stop device for a siphon pump of the present invention is a device that is attached to a siphon pump that divides liquid from a large container to a small container by siphon action to stop the siphon action. A drum is rotatably positioned in the drum, and a tube is wound around the drum with one end thereof fixed, and the other end of the tube hangs down in a straight line, and one end of the tube is communicated with the flow path of the pump. The other end of the tube is inserted into the liquid in the large container, and the communication point of the one end is located higher than the other end of the tube.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The one shown is a grip tube type pump, and as shown in FIG. A discharge hose connection part 3 is formed, a suction pipe 4 is connected to the lower opening, and check valves 5b and 5a are provided at the side opening and the lower opening of the connection cylinder 1, so that the pump is configured. There is. When the grip tube 2 is compressed, the valve 5a closes and the valve 5b opens to discharge the air inside the grip tube 2.As the grip tube 2 is restored, the valve 5a opens and the valve 5b closes, causing the air inside the suction pipe 4 to When the liquid is sucked up into the connecting tube 1 and the grip tube 2, and then the grip tube 2 is compressed, the valve 5a closes and the valve 5b closes.
is opened and the liquid in the connecting tube 1 and the gripping tube 2 is discharged through the discharge hose. Repeating this action,
When the suction pipe 4, the connecting cylinder 1, the grip cylinder 2, and the discharge hose are filled with liquid, the liquid is pumped up and discharged through the suction pipe 4 and the discharge hose by siphon action.

A receiver flange 6 is fixed to the outside of the lower end of the connecting tube 1 of the pump, and after the suction pipe 4 is inserted into a large container containing liquid, the receiver flange 6 is fitted into the liquid injection port. The pump is maintained in an upright position and the pump is mounted in a large container.

The device of the present invention is installed in the above-mentioned siphon pump, and the embodiment is constructed as follows.

That is, a casing 8 having a cylindrical shape with a bottom and a cylindrical shaft 9 at the center of the bottom surface is provided on the side opposite to the discharge side of the connecting cylinder 1 by inserting the cylindrical shaft 9 into the connecting cylinder 1. The drum 7 is the cylinder shaft 1
0 is fitted into the cylindrical shaft 9 of the casing 8 so as to be rotatable, and when the pump is installed in a large container as described above, the drum 7 is positioned above the liquid inlet. A small-diameter tube 11 is wound around the body of the drum 7, and an elbow 13 is fixed to one end of the tube 11. The tube 11 is inserted into and fixed to the casing 8, and one end of the tube 11 is communicated with the circulation path of the pump, and the other end of the tube 11 is fitted with a weight 16 having an air intake hole 17, and is inserted into the receiving flange from the lower opening of the casing 8. 6 and hangs down in a straight line along the suction pipe 4. An outer cylinder 1 has a bulging vertical guide part 14 on the outside of the suction pipe 4.
5 is fitted into the upper opening 19 of this guide portion 14.
The other end of the tube 11 is inserted into the guide portion 14.
It is designed to move up and down inside. The guide portion 14 may be formed integrally with the suction pipe 4 except for the outer cylinder 15. Therefore, by rotating the drum 7, the amount of winding of the tube 11 changes and the lowering position of the other end (weight 16) is adjusted. In the figure, reference numeral 18 indicates window holes formed at appropriate intervals in the vertical direction of the guide portion 14 for ventilation.

Next, the effect will be explained.

First, the suction pipe 4 is inserted into the liquid injection port of the large container to equip the pump, and the lower end (other end) of the tube 11 is set at a lower planned liquid level line corresponding to the amount of liquid to be pumped out from the liquid level in the large container. to be located. The position of the other end of the tube 11 can be determined by inserting an automobile engine oil gauge into the cylindrical part of the oil tank and then pulling it up to check the liquid level. The liquid level in the container may be checked, and the other end of the tube 11 may be positioned a predetermined distance below this level.Alternatively, the surface of the casing 8 may be marked with subdivision scales in units of 1 unit, or furthermore, the same scale may be subdivided to indicate the level of the drum 7. By placing an arrow on the edge of the rotating knob, the drum may be rotated in the direction of feeding out the tube, and the other end of the tube 11 may be lowered by a required length in accordance with the correspondence between the arrow and the scale.

With the other end of the tube 11 set at the desired position, the grip tube 2 is compressed and restored in the same manner as before, and the liquid in the large container is passed through the suction tube 4, the connection tube 1, and the discharge hose into subdivided containers by siphon action. Pump up, discharge and inject. In the injection state due to this siphon action, the liquid level in the large container falls and the weight 1
When the air reaches the air inlet 17 of No. 6, the air flows from the air inlet 17 through the tube 11 into the connecting cylinder 1, and the siphon action is automatically stopped. In other words, the required amount of liquid above the other end of the tube (the air inlet 17 of the weight 16) has been sucked up, and the required amount of liquid is injected into the small container and then automatically stopped.

As is clear from the above description, according to the automatic stop device of the present invention, in a device that is attached to a siphon pump that divides liquid from a large container into small containers by siphon action to stop the siphon action, A drum is rotatably positioned above the liquid injection port, a tube is wound around the drum with one end fixedly fixed, and the other end of the tube hangs down in a straight line, and one end of the tube is connected to the flow path of the pump. At the same time, the other end of the tube is inserted into the liquid in the large container, and the communication point of the one end is located higher than the other end of the tube, so that by rotating the drum, , position the other end of the tube at the expected liquid level line below the liquid level in the large container corresponding to the amount of liquid to be pumped,
When the pump is activated to draw up and discharge the liquid in the large container using the siphon action, and the liquid level in the large container reaches the expected liquid level line, the communication point at one end of the tube is positioned higher than the other end of the tube. As a result, air flows from the other end of the tube through the tube into the flow path of the pump, and the siphon action is automatically stopped and only the required amount of liquid is pumped. During this operation, the air inflow tube for stopping the siphon is kept airtight with only one tube, so unlike the conventional one mentioned above, the airtightness is poor at the part where the two correspond, and the siphon action stops midway. There is no danger of

In addition, by rotating the drum, the amount of descent of the other end of the tube can be continuously adjusted.
It also has the effect of being able to continuously adjust the discharge amount (pumping amount).

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a partially cutaway front view of a grip cylinder type pump equipped with the device of the present invention, FIG. 2 is a partially cutaway right side view of the main parts of the same, and FIG. 3 is a perspective view of the same. 1... Connection tube, 2... Gripping tube, 3... Discharge hose, 4... Suction pipe, 7... Drum, 10... Cylinder shaft, 11... Tube.

Claims (1)

[Claims] 1. In a device attached to a siphon pump that divides liquid from a large container into small containers by siphon action to stop the siphon action, a drum is rotatably positioned above the liquid inlet of the large container, and a tube is attached to the drum. One end of the tube is fixed and wound around the tube, and the other end of the tube hangs down in a straight line, one end of the tube is communicated with the circulation path of the pump, and the other end is inserted into the liquid in the large container. and a communication point at one end of the tube is located higher than the other end of the tube.