JPH0435640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic siphon-on stop device for a simple siphon-type pump.

[Conventional technology and its problems]

Conventionally, in a simple siphon-type pump, a float is attached to the tip of the discharge hose, and when this float reaches a predetermined level, the valve device of the ventilation pipe is opened by the rise of the float, and the air pump is A device is known in which air is supplied and the siphon action is automatically stopped. (Refer to Japanese Unexamined Patent Publication No. 59-154000) The mechanism that opens the valve device of the ventilation pipe by the rise of the float closes the opening at the tip of the ventilation pipe by a push-up rod that cooperates with the rise and fall of the float. The valve plate is pushed up to open the tip of the ventilation pipe, and the conventional valve device is described in the above-mentioned publication, and as shown in FIG.
is attached so as to be able to swing up and down, and as the push-up rod 43 rises, the valve plate 42 swings upward as shown by the chain line in the figure to open the valve.

However, with this structure of the valve device, if the push-up rod 43 rises significantly for some reason, the valve plate 42 will also swing greatly and come off the protrusion 41, or even if it does not come off, the protrusion will protrude into the mounting hole 44 of the valve plate 42. 41 may get stuck and not come back. If the valve plate 42 comes off and cannot be returned, the simple pump becomes inoperable.

[Purpose of the invention]

The present invention takes the above-mentioned problems into consideration and provides an automatic siphon-on stop device that can reliably and stably open and close the valve of a valve device that stops the siphon action by raising the float.

[Means for solving problems]

In order to achieve the above object, the present invention provides a conventionally well-known siphon-type simple pump in which a suction pipe and a discharge hose are attached to the lower part of the air pump section via a suction valve and a discharge valve, and the discharge hose is A cylindrical valve accommodating chamber is provided inside the tip of the discharge hose with a liquid flow path between it and the inner surface of the discharge hose, and this valve accommodating chamber is opened to the atmosphere. A cylindrical valve seat body having a valve hole on the upper surface and a closed lower surface is housed in the valve housing chamber, and the lower end of the ventilation pipe is connected to the air pump section, and the upper surface of the valve seat body is housed in the valve housing chamber. and the lower end of the vent pipe are connected by a relay pipe to communicate the inside of the valve seat body and the vent pipe, the valve hole on the upper surface of the valve seat body is closed, and the diameter is larger than the diameter of the upper surface of the valve seat body. A ring-shaped valve plate and a ring-shaped weight plate that overlaps the upper surface of the valve plate are slidably fitted to the outer surface of the relay pipe, and the valve plate is attached to the outer surface of the valve seat body and the lower surface thereof. A push-up cylinder that contacts and pushes upward is fitted so as to be able to rise and fall, and a notch is formed in the upper edge of the push-up cylinder, and a push-up rod is connected to the lower surface of the push-up cylinder, and the lower end of this push-up rod is connected to the valve. It was made to protrude below the storage chamber, and a float was attached to the lower end of this push-up rod.

[Effect]

For example, when transferring liquid from a large container to a subdivided container using a simple pump with the above structure, insert the suction pipe into the large container and the end of the discharge hose into the subdivided container, and then connect the air pump section. The liquid in the large container is operated to continuously flow out from the suction pipe to the discharge hose by siphon action, and the liquid flows into the subdivided container.

At this time, the valve plate is usually thin and lightweight;
The suction of air from the air pump portion closes the valve hole by tightly overlapping the upper surface of the valve seat body, so that no air leakage occurs, and the siphoning action is performed reliably and stably.

When the liquid level in the subdividing container rises due to the inflow of the liquid, the float rises accordingly.
When the float rises, the push-up cylinder rises along with the push-up rod along the outer surface of the valve seat body, the upper edge of the push-up cylinder comes into contact with the lower surface of the valve plate, and the valve plate is pushed up along the outer surface of the relay pipe. The valve hole on the top surface of the valve seat body is opened. When the valve hole on the upper surface of the valve seat body is opened in this way, the atmosphere flows into the valve seat body from the notch at the upper end of the push-up cylinder through the valve housing chamber.
Further, the liquid flows into the air pump section through the relay pipe and the ventilation pipe, and the siphon action is stopped, and the liquid stops flowing out from the discharge hose.

When this siphon action stops, the float rises significantly for some reason, and the valve plate and weight plate rise through the push-up cylinder and come into contact with the inner surface of the upper wall of the valve housing chamber. However, the valve plate and the weight plate overcome the adhesion force due to the moisture due to their own weight and descend as the push-up cylinder descends.
In addition, even if the weight plate should stick, the valve plate will lower the valve only.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the simple pump has a suction pipe 2 connected to the lower part of the air pump part 5 made of a flexible cylindrical body via a suction valve 1, and a suction pipe 2 connected to the lower side of the air pump part 5. through the discharge valve 3 to the discharge hose 4
It is a concatenation of

A collar 23 is fitted on the outside of the distal end of the discharge hose 4, and a collar 23 is fitted to the opening of the subdivided container, and a fixed cylinder 9 is fitted inside.

A cylindrical valve accommodating chamber 10 is formed inside the fixed cylindrical body 9 and is biased to one side. A space is opened, and this space serves as a liquid flow path 24. An opening 21 is formed in the side surface of the valve housing chamber 10 that contacts the inner surface of the discharge hose 4, and a communication hole 22 communicating with the atmosphere is formed in the discharge hose 4 facing the opening 21. The inside of the valve housing chamber 10 communicates with the atmosphere through the opening 21.

A vent pipe connecting cylinder 25 is provided on the upper surface of the valve housing chamber 10.
is erected, and the lower end of a vent pipe 6 inserted into the exhaust hose 4 from inside the air pump section 5 is inserted into the vent pipe connecting cylinder 25.

A relay pipe 15 whose lower end projects into the valve housing chamber 10 is connected to the lower end of the ventilation pipe 6 inserted into the ventilation pipe connection cylinder 25 .

A cylindrical valve seat body 14 having a valve hole 17 on its upper surface is housed in the valve housing chamber 10, and the upper surface of this valve seat body 14 is connected to the lower end of the relay pipe 15. The inside of 14 and the ventilation pipe 6 are connected to the relay pipe 15
are communicated via. The lower surface of the valve seat body 14 is closed by a lid body 19.

A ring-shaped valve plate 18 having a diameter larger than the diameter of the upper surface of the valve seat body 14 and having an outer peripheral portion protruding outward from the valve seat body 14 is slidably fitted on the outer surface of the relay pipe 15. This valve plate 18 is thin like the conventionally known valve plate 42, and when placed on the upper surface of the valve seat body 14, it is tightly fitted onto the upper surface by the intake air in the valve seat body 14. By overlapping, the valve hole 17 is reliably closed. Further, on the outer surface of the relay pipe 15, a metal ring-shaped weight plate 3 that overlaps the upper surface of the valve plate 18 is provided.
0 is slidably fitted.

A push-up tube 13 is fitted on the outer surface of the valve seat body 14 so as to be able to rise and fall to push up the valve plate 18 placed on the upper surface of the valve seat body 14 upward along the outer surface of the relay pipe 15. Several notches 20 are provided on the upper end edge of this push-up cylinder 13. On the lower surface of this push-up cylinder 13, a valve housing chamber 1 is provided downwardly.
A push-up bar 12 that projects downward from the bottom surface of the push-up bar 12 is connected to the float 8. Furthermore, a skirt-shaped guide plate 7 is provided on the lower surface of the valve housing chamber 10 to direct the outflow of the liquid to the side so that the liquid flowing out from the discharge hose 4 does not hit the upper surface of the float 8 .

Next, the operation of the above embodiment will be explained using an example in which liquid in a large container is transferred to subdivided containers.

Insert the tip of the discharge hose 4 into the container mouth of the subdivided container so that the collar 23 is locked to the container mouth, and squeeze the air pump part 5 to suck out the liquid in the large container from the suction pipe 2 and discharge it. It is made to flow into the subdivision container from the hose 4.

At this time, since the valve plate 18 is thin and lightweight, the air is taken in through the ventilation pipe 6 of the air pump section 5, and it tightly overlaps the upper surface of the valve seat body 14, closing the valve hole 17 and preventing air leakage. The siphon action is performed reliably and stably.

When the liquid level in the subdividing container rises due to the inflow of the liquid, the float 8 rises accordingly. When the float 8 rises, the push-up tube 13 rises along with the push-up rod 12 along the outer surface of the valve seat body 14, the upper end edge of the push-up tube 13 comes into contact with the lower outer circumferential surface of the valve plate 18, and the valve plate 18 moves up against the relay pipe 15. The valve hole 1 on the upper surface of the valve seat body 14 is pushed up along the outer surface of the valve seat body 14.
7 will be held. When the valve hole 17 on the upper surface of the valve seat body 14 is opened in this way, the atmosphere in the valve housing chamber 10 flows into the valve seat body 14 through the notch 20 at the upper end of the push-up cylinder 13, and further into the relay pipe. 15. The air flows into the air pump section 5 through the ventilation pipe 6, the siphon action is stopped, and the outflow of liquid from the discharge hose 4 is stopped.

When this siphon action is stopped, the float 8 rises significantly for some reason, and the valve plate 18 and weight plate 30 are lifted up via the push-up tube 13 and come into contact with the inner surface of the upper wall of the valve housing chamber 10. Even if the surfaces are wet, the valve plate 18 and the weight plate 30 overcome the adhesive force due to the wetness due to their own weight and descend as the push-up cylinder 13 descends. Even if the weight plate 30 were to stick, only the valve plate 18 would move down.

〔effect〕

As described above, the present invention provides a valve hole in the upper surface of a cylindrical valve seat body, closes this valve hole with a valve having a diameter larger than the diameter of the valve seat body, and connects this valve to the valve seat body. The valve is slidable along the relay pipe connected to the upper surface, and the lower surface of the outer periphery of the valve is placed on the upper end surface of the push-up cylinder fitted to the outer surface of the valve seat body, so that the valve can be raised and lowered. This has the advantage that the valve plate for stopping the siphon action can be raised and lowered stably and reliably while being guided by the relay pipe.

In addition, the valve body needs to tightly overlap the upper surface of the valve seat body and close the valve hole by the intake air during the siphon action, so it is usually thin and lightweight. If the float rises significantly and the valve plate comes into contact with the inner surface of the upper wall of the valve accommodating chamber, and the contact surface is damp, there is a risk that the valve plate will stick. However, in this invention, since the weight plates are stacked one on top of the other, the valve plate and the weight plate overcome the adhesive force and descend due to their own weight. Or, even if the weight plate were to stick, the valve plate would lower the valve only. That is, the present invention has the advantage that it is possible to reliably close the valve of the automatic stop device when the siphon is activated, and it is also possible to reliably return the valve plate after the valve is opened.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a partially cutaway front view of a simple pump equipped with an automatic siphon stopping device, and Fig. 2 is an enlarged partially cutaway view of only the essential parts of the same siphon stopping device. FIG. 3 is an exploded perspective view, FIG. 3 is an enlarged sectional view taken along the line of FIG. 1, and FIG. 4 is a schematic diagram of a conventional valve device. 1... Suction valve, 2... Suction pipe, 3... Discharge valve,
4...Discharge hose, 5...Air pump section, 6...
Ventilation pipe, 8...Float, 10...Valve accommodation chamber, 1
2...Pushing rod, 13...Pushing cylinder, 14...
... Valve seat body, 15 ... Relay pipe, 17 ... Valve hole, 18
... Valve plate, 20 ... Notch, 30 ... Weight plate.

Claims (1)

[Claims] 1 In a simple siphon type pump in which a suction pipe 2 and a discharge hose 4 are attached to the lower part of the air pump part 5 via a suction valve 1 and a discharge valve 3, a cylindrical valve is installed inside the tip of the discharge hose 4. The accommodation chamber 10 is provided with a liquid flow path 24 between it and the inner surface of the discharge hose 4, and the inside of this valve accommodation chamber 10 is opened to the atmosphere. A cylindrical valve seat body 14 having a valve hole 17 on the upper surface and a closed lower surface is housed in the valve housing chamber 10, and the lower end of the ventilation pipe 6 communicated with The upper surface of the valve seat body 14 and the lower end of the vent pipe 6 are connected by a relay pipe 15 to communicate the inside of the valve seat body 14 and the vent pipe 6, and the valve hole 17 on the upper surface of the valve seat body 14 is closed. A ring-shaped valve plate 18 having a diameter larger than the diameter of the upper surface of the valve seat body 14 and a ring-shaped weight plate 30 overlapping the upper surface of the valve plate 18 are slidably fitted to the outer surface of the relay pipe 15, and the valve A push-up tube 13 that abuts the lower surface of the valve plate 18 and pushes it upward is fit into the outer surface of the seat body 14 so as to be able to rise and fall freely, and a notch 20 is formed at the upper end edge of the push-up tube 13. A push-up bar 12 is connected to the lower surface of the cylinder 13, and the lower end of this push-up bar 12 is made to protrude below the valve housing chamber 10, and a float 8 is attached to the lower end of this push-up bar 12.
A siphon automatic stop device for a simple pump, characterized by the fact that it is equipped with a.