JPS5815633B2 - pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grip-type pump used to subdivide liquid fuel for kerosene heaters, soy sauce, etc. from large containers to small containers by siphoning.

This type of grip-type pump has a valve cylinder at the bottom of the grip that can be compressed and restored, a discharge hose is connected to the side of the valve cylinder, and a suction pipe is connected to the bottom of the valve cylinder. is equipped with check valves on the discharge hose side and the suction pipe side, and by compressing and restoring the grip part, the liquid in the suction pipe is sucked up and discharged toward the discharge hose, and the liquid is transferred to the suction pipe, valve cylinder, and discharge hose. After the tank is filled with liquid, it is continuously pumped out using a siphon action.

By the way, when distributing liquid with this pump,
If you take your eyes off the small portion while working, 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 action, causing the liquid to fill the container and overflow. There is a problem with it.

Various ideas have been devised as means to prevent this overflow.

For example, as described in Japanese Utility Model Application No. 50-113903, one main air pipe is pulled out from the grip and connected to a switching operation panel attached to the side of the grip. By connecting and hanging down multiple sub-air pipes, and operating the slide piece on the switching operation panel, any one of the sub-air pipes and the main air pipe are communicated, and the communicated sub-air pipes are Devices have been devised to stop the siphon action by sucking in air when the lower end of the tube leaves the liquid surface.

However, this device requires precision force cutting between the switching operation panel and the slide piece in order to reliably and airtightly connect the main air pipe connected to the switching operation panel to the selected auxiliary air pipe, making it expensive. Not only that, but if the airtightness is uncertain, siphon action will not occur, making it unsuitable for this type of siphon pump, and the discharge amount can only be adjusted by the length of each sub-air pipe.
In other words, there is a problem that continuous adjustment is not possible.

The present invention takes the above points into consideration and aims to provide a pump having a function of continuously adjusting the discharge amount.

In other words, the pump of the present invention is a grip-type pump, in which one or a plurality of hard rods of different lengths are placed inside the pump part consisting of the grip part and the valve barrel, and the lower side is outside the pump part and is attached to the suction pipe. A straight tube is disposed at two places on the top wall of the pump section and on the lower side of the pump section so as to be able to slide up and down in an airtight manner, and the upper end protruding above the pump section is closed to form a knob; In the pump section, a small hole is formed in the pipe wall in the middle of these straight pipes, and a liquid suction amount scale is attached above the small hole, and the small hole is such that the knob comes into contact with the pump section. It is formed in a portion corresponding to the wall of the lower through-hole of the pump section in the lowered position so that it can be closed by the wall of the through-hole, and the thin tube has a length such that its lower end reaches near the lower end of the suction tube.

With this configuration, any straight pipe can be lowered by the required distance according to the scale, and when the liquid level falls, the air in the container can flow into the pump section only from the lower end of the straight pipe. By closing the small hole in the straight pipe, even if the pump is operated to pump out the liquid and a siphon effect is generated, the liquid level in the container will fall and the liquid level in the container will reach the scale once a certain amount of liquid has been pumped out. At the same time, the air in the container is sucked from the lower end of the straight pipe, and the siphon action is automatically stopped.

Therefore, there is no risk of the liquid overflowing from the small container even if you are doing other chores.

Furthermore, by arbitrarily selecting the scale, the amount of pumping can be changed continuously.

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

In the figure, 1 is a valve cylinder that constitutes the pump part A. A grip part 2 is connected to the upper part, a connection port 4 for the discharge hose 3 is connected to the side of the valve cylinder, and a connection port for the suction pipe 5 is located at the bottom. 6 is formed,
Inside these connection ports, a short cylinder 8 with a valve seat 7 is provided with a valve plate 9.
Check valves B-1 and B-2, which are swingably mounted, are fitted.

Pumps with the above structure are well known.

The pump part, that is, from the valve cylinder 1 to the grip part 2 in Fig. 1 and Fig. 2.
Inside are hard straight pipes 10a and 10b made of stainless steel, for example, whose lower sides are attached to the suction pipe 5 outside the pump section.
The upper part of the straight pipes 10a and 10b is passed through the pump part in an airtight manner at two places, the upper and lower parts, and can be slid up and down, and the upper ends of the straight pipes 10a and 10b protruding from the pump part, that is, the grip part 2, close the shaft hole and are provided with a knob 11. It is.

These straight pipes are inserted into the lower through hole wall 1 while the straight pipes are lowered to the position where the knob contacts the pump part A.
A small hole 13 is formed in a portion corresponding to 2, and this small hole is closed by the wall of the through hole.

By positioning the lower end of the hard straight pipe a required distance below the liquid level in the container, and opening a small hole in the middle of the straight pipe into pump section A, a siphon effect will occur and the liquid level will fall. When the lower end of the straight tube is reached, the air inside the container is sucked through the straight tube and the siphon action stops.

In this case, the distance that the small hole 13 of the straight pipe moves within the pump section, that is, the vertical length within the pump section, becomes the adjustment range for the pumping amount. If the length is longer than the liquid level movement distance), one straight tube is sufficient; if not, use multiple straight tubes as long and short tools, and make the adjustment range (distance) of each straight tube continuous. Make it possible to cover the entire liquid surface distance.

A suction amount scale 14 is provided above the small hole 13 of each straight pipe, and this scale is set so that, for example, one large scale is 1
00 cubic centimeters.

In this embodiment, two straight tubes are provided, one long and one short.
The length of the straight tube and the position of the small hole are set so that 0a goes up and down from the middle of the depth inside the container to the bottom, and the difficulty level thin tube 10b goes up and down from the top to the middle of the inside of the container, and the liquid level is set to the level of the difficulty level thin tube. After reaching the lower level than 10b, the small hole of the difficulty level thin tube is closed with the lower through hole wall 12.

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

Now, when pumping, check the amount of remaining liquid in the large container, take the pumping amount into consideration, and lower one of the two long and short straight pipes to the required length according to the scale according to the pumping amount. The small hole 13 of the other one is closed with the through-hole wall 12.

In this state, the pump is activated and the liquid is pumped out by siphon action, and when the liquid level gradually falls and the desired amount of liquid is pumped out, the liquid level in the large container is lowered to the lower end of the straight pipe. The siphoning action automatically stops when air enters this straight tube in accordance with the desired amount of liquid is pumped out and then stops.

In addition, if you want to stop the siphon action while the siphon action is in progress (during pumping), it is common to install a popular valve in the pump part and open this valve. The grip part 2 is screwed into the valve cylinder 1 without providing a handle, and the threaded part 15 is tapered so that when the grip part is loosened, a gap is created in the threaded part so that outside air can flow in. It is designed to stop the siphon action,
Therefore, the straight capillary tube is positioned on the axis so that the grip part 2 can be rotated, and a small disc-shaped lid 16 is rotatably attached to the part where the straight capillary tube passes through the grip part. There is an airtight seal through the lid.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of the pump according to the present invention, FIG. 2 is a right side view of the same, and FIG. 3 is an enlarged front view of the main parts of the same. A... Pump part, 1... Valve cylinder, 2...
...Grip part, 3...Discharge hose, 5...
...Suction pipe, B-1, B-2...Check valve, 1
0a, 10b...Rigid straight tube, 11...
・Knob, 12...Lower through hole wall, 13...
...Small hole, 14... Suction amount dial.

Claims (1)

[Claims] 1. A valve cylinder is provided at the bottom of the grip that can be freely compressed and restored, and a discharge hose is connected to the side of this valve cylinder, and a suction pipe is connected to the lower part, and inside the valve cylinder there are a discharge hose side and a suction pipe side. In a grip-type pump that divides liquid from a large container to a small container by a siphon action, a check valve is installed in the pump, and the lower side is placed outside the pump part and aligned with the suction pipe inside the pump part, which consists of the grip part and valve barrel. One or more hard thin tubes of different lengths are arranged so as to be able to slide up and down in an airtight manner at two places, the top wall of the pump part and the bottom of the pump part, and are arranged above the pump part. The protruding upper end is closed to form a knob, a small hole is formed in the pipe wall in the middle of these straight tubes in the pump part, and a liquid suction amount scale is attached above the small hole,
The small hole is formed in a portion corresponding to the wall of the lower through-hole of the pump part at the lowered position where the knob abuts against the pump part, so that it can be closed by the wall of the through-hole, and the lower end of the longest straight tube does not allow suction. A pump characterized by having a length that reaches near the bottom of a pipe.