JPS6017953B2 - simple pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a simple pump of the type in which a squeeze cylinder-shaped compressible and decompressible pump part is interposed between a suction pipe and a discharge hose.

In the conventional simple pump of this kind, as described in Japanese Patent Publication No. 52-2123, a discharge hose is connected from the upper end of a vertical suction pipe to the side, and the pump part is interposed in the connection part. The fluid backflow prevention valve body (hereinafter simply referred to as the valve body) on the suction pipe side has a horizontal valve seat and a valve plate rests on the valve seat, so when fluid backflows, it can immediately stop the backflow. .

The horizontally built simple pump mentioned above is convenient for pumping liquid from 18 and 18 mm containers, but for containers with large heights such as 180 mm drums, even if the length of the suction pipe is increased, the pump will not work. Because the pump section is located at a higher level than the container, it is difficult to compress and restore the pump section.

Therefore, a pump has been devised in which a suction pipe and a discharge pipe are provided in a straight line at the upper and lower parts of the pump part.

That is, to explain with reference to FIG. 1, a flexible suction pipe 3 is connected to the upper part of the cylinder pump part 1 whose axial direction in use is the vertical direction, and a discharge hose is connected to the lower part of the pump part 1. 4 are connected, and backflow prevention valve bodies B-, B-2 are provided at both connecting portions 23 and 2b, respectively.
As shown in the figure, this simple pump is used by making the suction pipe 3 long and inserting it into a container such as a drum, and then bending the suction pipe 3 downward, so the pump part 1 is placed at a lower level than the container. This makes it easy to compress and restore the pump section.

However, with this type of conventional simple pump,
As shown in FIG. 3, the valve bodies 6 of the valve bodies B-, , B-2 are installed horizontally, and the valve bodies 6 are provided so as to come into contact with the fluid outflow side of the valve seat 12, so that the valve bodies 6 are not in use. Now, it is in a state where it can freely swing downward as shown by the chain line in the figure.

Therefore, the backflow of liquid is prevented by the flow (in the opposite direction of the arrow) pushing up the valve plate 6 and closing the valve hole 9, so it takes some time for the valve to close, making the operation of the pump uncertain. There is a problem. With the above points in mind, the present invention provides the above-mentioned simple pump, in which the valve plate is always in the axial direction of the pump part, and when in use, the valve plate is in the vertical direction so that the valve can be closed by its own weight. , the purpose is to ensure that the valve closing action can be achieved.

In order to achieve this objective, in the present invention, as described above, a flexible suction pipe is connected to the upper part of the grip cylinder pump part whose axial direction is the vertical direction when in use, and a discharge pipe is connected to the lower part of the pump part. In a simple pump in which a hose is connected and valve bodies for preventing backflow are provided at both connection parts, the valve body is connected to a vertical partition wall inside a cylindrical valve cylinder that is placed on the same axis as the pump part and wrapped around the connection part. It is divided into two chambers on the left and right, and in one compartment, the upper end opening part of the valve cylinder is closed, and in the other compartment, the lower end closing part is closed with a closing plate, and a valve hole is provided in the vertical partition wall. The valve hole is configured to be closed by a valve plate suspended from the longitudinal partition wall on the fluid outflow side.

With this structure, after inserting the suction pipe into a container such as a drum, the suction pipe is bent downward, the pump section is operated to pump up the liquid through the valve body, and the pump is filled with the liquid, and then, Inject liquid by siphon action.

During this operation, the valve hole is closed with the valve plate suspended in the vertical direction, so the valve closing action is performed not only by the flow of liquid but also by its own weight.

Therefore, since the valve closing action is instantaneously and reliably performed, the operation of the pump is ensured. Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, A is a simple pump, and 1 is a twill-type pump portion thereof, and as will be described later, the vertical direction is the vertical direction when the pump is in use.

Reference numerals 2a and 2b are hose acid competition parts at both ends.

3 is a suction pipe connected in series to one connection part 2a of the pump section 1, and 4 is a discharge hose connected in series to the other connection part 2b.

The pump portion 1 side of the suction pipe 3 is bellows-shaped and can be bent. 14 is the bellows part.

There are valve bodies B-, , in the connecting parts 2a and 2b at both ends of the pump part 1
B-2 is loaded.

As shown in exploded view in FIG. 2, the valve bodies B-, B-2 consist of a valve cylinder 5 and a valve body 6, which are fitted on the same axis as the pump part 1 and connected to the connecting parts 2a and 2b. .

The valve cylinder 5 has a cylindrical body a divided into two chambers 7a and 7b on the left and right by a vertical partition b.One compartment 7a has an upper end side entrance part of the cylinder a, and the other compartment In the chamber 7b, the opening on the lower end side of the cylinder is closed with closing plates 8a and 8b, respectively.

A valve hole 9 is provided in the center of the partition wall b, and a horizontal protrusion 10 is formed in a portion closer to the closing plate 8a on one compartment 7a side, which is the fluid outflow side.

The valve plate 6 has a ring part 11 formed at one place on the periphery to which the protrusion 101 is fixed, and by hooking the ring part 11 to the protrusion 101, the valve plate 6 is moved downward (in the vertical direction). The valve seat 12 on the edge of the hanging valve hole 9 can be contacted.

Incidentally, claws 13 are formed on both sides of the valve plate in order to prevent the ring part 11 of the valve plate from slipping out.

In addition, if the claw 13 is formed, it is difficult to insert the ring part 11 of the valve plate, but the valve cylinder 5 is made of a semi-hard plastic molded product, and the protrusion 10 has a bifurcated shape as shown in the figure. By this, when passing the annular part 11 of the valve plate over the protrusion 101, both parts can be brought close to each other, and it can be easily passed through. Valve cylinder 5 shown
The cylindrical body a has a notch in most of the center of the side wall on the one compartment 7a side over the entire length in the vertical direction so that the valve plate 6 can be easily hung and attached.

The embodiment is configured as described above, and its operation will be explained next.

Now, as shown in FIG. 1, the suction pipe 3 is bent and its tip is inserted into a liquid container (not shown) such as a rum can, the pump part 1 is positioned vertically, and the discharge pipe 4 is After inserting it into an injection container (not shown), when the pump part 1 is inflated vertically and operated, when the pump part 1 is inflated, the upper valve body B-, opens, and the lower valve body B-2 closes, causing the pump part to open. During compression, the upper valve body B-, closes, and the lower valve body B-2 opens to discharge the liquid in the pump part 1.

By repeating this action, the suction pipe 3, the pump part 1,
When the discharge hose 4 is filled with liquid, the flow of the liquid causes the valve body 6 to open as shown by the chain line in FIG. 1, and the liquid is automatically discharged by the siphon action. During this operation, the valve plate 6 is always suspended in the vertical direction, and since this state is the valve closed state, the valve closing operation is performed smoothly. If this valve closing action is performed smoothly, backflow of liquid is reliably prevented, and the pumping action is also reliably performed. Since this invention is constructed as described above, the valve closing action is performed smoothly even when liquid is poured from a large container such as a drum can.
The pump can operate smoothly and reliably, and has the effect of facilitating liquid injection.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of an example of a simple pump according to the present invention, and Fig. 2 is an exploded perspective view of only the valve body of the above.
FIG. 3 is a sectional view of the valve body of the slave pump. 1...Pump part, 2a, 2b...Connection part, 3...Suction pipe, 4...Discharge hose, B
-,, B-2... Valve body, 5... Valve barrel,
a...Cylinder body, b...Vertical bulkhead, 6...
...Valve plate, 7a, 7b... Compartment, 8a, 8
b: Closure plate, 9: Valve hole. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1 Connect a flexible suction pipe to the upper part of the grip cylinder pump part whose axial direction is the vertical direction when in use, connect a discharge hose to the lower part of the pump part, and install a backflow prevention valve at each connection part. In a simple pump having a valve body, the inside of the cylindrical valve cylinder fitted in the connecting part on the same axis as the pump part is partitioned into two left and right chambers by a vertical partition, and one compartment has a valve cylinder. The upper end opening and the lower end opening in the other compartment are closed with a closing plate, a valve hole is provided in the vertical partition wall, and the valve hole is suspended from the vertical partition wall on the fluid outflow side. A simple pump characterized in that it is configured to close with.