JPS6158680B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a simple pressurizing pump used, for example, in the case of discharging kerosene for kerosene stove fuel from 18 containers into subdivided containers or tanks.

[Conventional technology and its problems]

The simple pressure pump has the upper end of a cylindrical plug that can be airtightly fitted into the mouth of a large container connected to the lower end of the operating cylinder that can be compressed and restored, and a liquid discharge hose is airtightly inserted into the plug. I supported it.

When taking out liquid from a large container using this simple pressurizing pump, once the pump is activated and the internal pressure is applied to the large container and the liquid flows out of the hose, the liquid will continue to flow due to the siphon action even if the pump is stopped. Continuous outflow.

By the way, if you want to stop the outflow of liquid, simply removing the pressurized air in the large container and making it normal pressure will not stop the siphon action.

Generally, air flows into the hose to stop the siphon action, but the purpose of this invention is to provide simple pressurization that allows outside air to flow into the hose by unscrewing the operating cylinder from the stopper. There is a pump.

[Means for solving problems]

In order to solve the above problems, the present invention provides a screw connection between the lower end of the actuating cylinder and the upper end cylinder part of the plug body, and a tapered surface is formed around the entire circumference of the lower end of the actuating cylinder.
A small ventilation hole is provided in the tapered surface of the upper end cylindrical wall of the plug that fits into this tapered surface so that the small hole can communicate with the plug body only when the screw is unscrewed. is a simple method in which the protruding shaft is hung down and its lower end is exposed above a small circular hole formed in the horizontal top wall of the bent part of the hose in the plug body, and the small circular hole is closed with the lower end of the protruding shaft when the actuating cylinder is screwed. It was used as a pump.

[Effect]

By screwing the cylindrical stopper into the container opening of the large container and operating the operating cylinder with the operating cylinder screwed onto the stopper, outside air is forced into the large container, and the liquid in the large container is The liquid flows out through the hose into the subdivision container, and then the inside of the large container is brought to normal pressure and even if the operation of the actuating tube is stopped, the liquid will continue to flow out due to the siphon effect, but if you want to stop the liquid from flowing out, turn the actuating tube. By unscrewing, the small ventilation hole on the plug body side communicates with the plug body, and the small circular hole in the horizontal top wall of the bent part of the hose inside the plug body also opens, allowing outside air to flow into the hose and creating a siphon effect. Stop.

〔Example〕

In FIG. 1, A is an actuating tube, and B is a plug connected to the actuating tube, which fits airtightly into the container opening 2 of the large container 1.

The operating cylinder A has bellows folds 3 that can be compressed and restored, and cylinder parts 4 and 5 with closed tips are formed at the upper and lower ends, and the closed walls of these cylinder parts are shown enlarged in FIG. A valve hole 6 is provided in and a valve body 7 is mounted.

As shown in FIG. 2, the valve body 7 has a protrusion b facing toward the circumference at one end of the valve shaft a, and this protrusion is connected to the valve hole 6.
A thin, soft valve plate c is fixed to the middle of the valve stem a, and the upper part of the valve stem from the valve plate c is inserted into the valve hole 6.

The lower cylindrical portion 5 of the operating cylinder is adapted to fit into the upper end opening of the cylindrical body 9 of the plug body B, and threads 10 and 11 are respectively formed on the fitting surfaces of both.

Further, a tapered surface 12 is formed on the lower end periphery of the lower cylinder part 5 of the actuating cylinder A, as shown in FIG. A tapered surface 13 is formed that comes into close contact with the tapered surface 12 when screwed on, and a small hole 14 for ventilation is provided in the tapered surface 13. When screwed down as shown in FIG. 4, the small hole 14 is plugged. It is designed to communicate with the inside of body B.

A liquid discharge hose 15 is inserted and supported in the plug body B in an airtight manner.

In the illustrated structure, the hose is supported by integrally forming an elbow 16 in the cylindrical part 9 of the stopper, with one end of the elbow 16 partially protruding from the circumferential side of the cylindrical part 9, and a discharge hose part d and the other end of the elbow 16 being made to protrude from the circumferential side of the cylindrical part 9. A straight pipe 17 is connected to and hangs down.

As shown in FIG. 4, a small circular hole 18 is formed in the horizontal top wall of the bent portion of the hose, that is, the elbow 16 in the cylindrical portion 9 of the plug body, directly below the valve body 7. When screwed, the valve body 7 will open as shown in Figure 3.
The tip of the protruding shaft enters into the small circular hole 18 and closes it, and the small circular hole 18 is opened only when the operating cylinder is screwed out. When the small circular hole 18 is opened, the plug body B
The ventilation hole 14 is also open, allowing outside air to flow into the hose 15 and stopping the siphon action.

〔effect〕

By using the simple pressure pump of this invention,
It has the following effects.

Operate the actuating tube to pressurize the inside of the large container and cause the liquid to flow out through the hose to the subdivided containers, then set the inside of the large container to normal pressure and use the siphon action to stop the liquid from flowing out while the liquid is continuously flowing out. If desired, by unscrewing the operating cylinder, the valve stem will come out of the small circular hole in the horizontal top wall of the bent part of the hose in the plug body, allowing outside air to flow into the hose, thereby stopping the siphon action. .

[Brief explanation of the drawing]

The drawings show an embodiment of the simple pressurizing pump of the present invention, in which Fig. 1 is a partially cutaway side view of the pump in its usage mode, Fig. 2 is a perspective view of the valve body, and Fig. 3 is a perspective view of the valve body.
FIG. 4 is an enlarged partial vertical cross-sectional view of the main parts of the figure, and FIG. 4 is a partial vertical cross-sectional view showing the operating state of the same. A... Actuation tube, B... Plug body, 10... Actuation tube A
Threads on the lower end cylindrical part 5, 11...Threads on the upper end of the cylindrical part 9 of the plug body B, 12, 13...Tapered surface, 14...Small hole for ventilation, 7...Valve body, a...Protruded shaft ,b...protrusion,
C...Soft valve plate, 15...Liquid discharge hose, 18
...Local foramen.

Claims (1)

[Claims] 1. Connect the upper end of a cylindrical stopper that can be airtightly fitted to the mouth of a large container to the lower end of the compressible and decompressible actuating cylinder, so that the liquid discharge hose is airtightly inserted into the stopper. In the supported simple pressurizing pump, the lower end of the operating cylinder and the upper end cylinder of the plug are connected by a screw, and the lower end of the operating cylinder is formed with a tapered surface over the entire circumference,
A small ventilation hole is provided in the tapered surface of the upper end cylindrical wall of the plug that fits into this tapered surface so that the small hole can communicate with the plug body only when the screw is unscrewed. hanging the protruding shaft so that the lower end of the protruding shaft faces above the small circular hole formed in the horizontal top wall of the bent part of the hose inside the plug body, and closing the small circular hole with the lower end of the protruding shaft when screwing the actuating cylinder. A simple pressurizing pump featuring: