JPH0996300A - Hand pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hand pump, which can be hooked to a protrusion of a wall or the like, and which can make air quickly flow in by operating with one hand a protrusion provided in an upper part of a working cylinder. SOLUTION: A hand pump comprises a flexible cylinder 1 having a notch 10 in a root of an annular protrusion 9 in an upper part to cause flow of air from the notch 10 by bringing down the protrusion 9 and stop flow of the air by returning back the protrusion 9 to the origin, suction pipe successively provided through a suction valve in the working cylinder 1 and a delivery hose successively provided through a delivery valve in the working cylinder 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual pump used when transferring kerosene, soy sauce, edible oil or the like from a large can to a stove or a small container.

[0002]

2. Description of the Related Art Conventionally, a manual pump as shown in FIG. 3 is known. Briefly explaining its structure,
An air hole 3 is formed in the upper part of the bendable actuating cylinder 1, and the air hole 3 is sealed when the screw-type air hole lid 2 is strongly tightened, and when the air hole lid 2 is loosened, air is passed through the air hole 3 from the screw gap. Come and go. Further, a valve box 4 is provided in the lower part of the operating cylinder 1, and is connected to a suction pipe 7 via a suction valve 5.
Further, they are respectively connected to the discharge hose 8 via the discharge valve 6.

When transferring kerosene from a large can to the stove, the suction pipe 7 is inserted into the can mouth, and the discharge hose 8 is inserted into the tank of the stove. When the operation of closing and closing the part of the operating cylinder 1 with the hand is repeated several times, the suction valve 5 and the discharge valve 6 are alternately opened and closed, and kerosene is sucked up from the can through the suction pipe 7, and the discharge hose 8 Through to the stove tank. After the discharge hose 8 is filled with kerosene, the kerosene is automatically pumped out by the siphon principle even if the operation of grasping and separating the operating cylinder 1 by hand is stopped. In order to stop the pumping of kerosene, the air hole lid 2 is loosened, and air enters the operating cylinder 1 and the valve box 4 from the air hole 3 to stop the movement of kerosene.

However, in order to loosen the air hole lid 2, it takes a little time to use both hands, and when trying to fill the stove tank full, the timing of opening the air hole 3 is slightly delayed and kerosene is used. There was a drawback that it was easy to make a mistake of overflowing.

Further, since the air hole lid 2 is located above the actuating cylinder 1, it is difficult to take a structure for hooking it on a hook during storage as seen in a dry battery type kerosene pump. It had the drawback of not becoming.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to remedy the above-mentioned drawbacks of the conventional device and to provide a manual pump which can quickly open an air hole with one hand.

[0007]

In order to achieve the above object, the manual pump of the present invention has a notch at the base of the upper protrusion, and by tilting the protrusion, air flow from the notch occurs and the protrusion is removed. A flexible actuating cylinder that stops air flow when returned to its original state, a suction pipe connected to the actuating cylinder via an intake valve, and a discharge hose connected to the actuating cylinder via a discharge valve. I have it. Furthermore, the head of the actuating cylinder has an annular protrusion.

[0008]

[Operation] When no force is applied to the projection on the upper part of the operating cylinder, air does not enter or leave the operating cylinder through the notch at the base of the projection. Liquid can be pumped out of the can by repeating several times, and when stopping pumping,
Just by pushing down the protrusion with the thumb holding the operating cylinder, the notch at the base is opened and air enters the operating cylinder, so pumping can be stopped.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A manual pump according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front sectional view of the whole thereof, and FIG. 2 is an operation explanatory view showing a portion of an operating cylinder. An annular projection 9 is formed on an upper portion of an operating cylinder 1 made of a bendable material such as soft polyethylene, and a valve box 4 provided with a suction valve 5 and a discharge valve 6 is continuously connected to a lower portion of the operating cylinder 1 for suction. A suction pipe 7 is connected to the valve box 4 via a valve 5, and a discharge hose 8 is connected to the valve box 4 via a discharge valve 6.

The projection 9 on the upper portion of the actuating cylinder 1 is flat so that the thumb can be easily tilted while gripping the actuating cylinder 1, and a notch 10 is provided on one side at the base thereof. The cuts 10 are in close contact with each other when no external force is applied. It is provided at a position distant from the outer edge portion 11 of the operating cylinder 1 so that the stress due to the deformation is not transmitted to the notch 10 while the operating cylinder 1 is bent. Further, the root of the protrusion 9 is thick on the side where the notch 10 is formed so that the protrusion 9 can only fall to the opposite side of the notch 10. This has the advantages that the cutting is easy to process and that the opening area of the cutting when the protrusion 9 falls down can be made large.

Next, the operation will be described. At the time of use, the projection 9 on the upper part of the operating cylinder 1 does not fall down, and the notch 10 at the base thereof is sealed so that air does not come in and out of the operating cylinder 1. When repeated several times, the suction valve 5 and the discharge valve 6 are alternately opened and closed to suck the liquid from the can through the suction pipe 7,
After the discharge hose 8 is discharged and the discharge hose 8 is filled with kerosene, the liquid is automatically drawn out of the can by the siphon principle even if the operation of grasping and separating the part of the operating cylinder 1 by hand is stopped. To stop the pumping of the liquid, use the operating cylinder 1
When the projection 9 is tilted in the direction opposite to the notch 10 with the thumb of the hand holding the notch 10, the notch 10 is opened and air enters the actuating cylinder 1 to stop the pumping. Further, when the thumb is released from the protrusion 9, the notch 10 is returned to the original state, and the resetting operation for performing the lifting again is unnecessary.

When storing the manual pump, the annular portion of the projection 9 can be inserted and hung in a hook or the like attached to the wall, so that the tip of the hose can be prevented from attaching dirt to the floor when leaning against the wall. it can.

In the above embodiment, the annular projection 9 is provided on the upper portion of the actuating cylinder 1, but it is not always necessary, and it is only necessary that the projection 9 can be easily tilted to open the notch 10. Good.

[0014]

As described above, in the manual pump of the present invention, the operation of drawing air into the operating cylinder can be performed with one hand, and the operation need only be performed by tilting the projection, so the operation is simple and quick. Eliminating the failure that the timing of opening the air vent is delayed and the liquid overflows,
The operation for closing the air hole at the time of re-operation is unnecessary, and it is possible to hook it on a wall hook or the like, which is an effect of being clean.

[Brief description of drawings]

FIG. 1 is a front sectional view of a manual pump according to an embodiment of the present invention.

FIG. 2 is an operation explanatory view showing a portion of the operating cylinder.

FIG. 3 is a sectional view of a conventional device.

[Explanation of symbols]

1 Working Tube 2 Air Hole Cover 3 Air Hole 4
Valve box 5 Suction valve 6 Discharge valve 7 Suction pipe 8
Discharge hose 9 Protrusion 10 Notch 11 Outer edge

Claims (2)

[Claims] 1. A bendable actuating cylinder having a notch at the base of an upper protrusion, inclining the protrusion causes air to flow from the notch, and returning the protrusion to stop the air from flowing. A suction pipe connected to the cylinder via a suction valve,
A manual pump having a discharge hose connected to an operating cylinder via a discharge valve. 2. A bendable actuating cylinder having an annular projection on its head, a suction pipe connected to the actuating cylinder via a suction valve, and a discharge hose connected to the actuating cylinder via a discharge valve. Manual pump with and.