JPH0524560U - Liquid pouring pump - Google Patents

Abstract

(57) [Summary] [Purpose] A liquid pouring pump for pouring liquid inside a container by vertical movement of an operating member, which does not use a ball valve body and has a discharge valve with a simple mounting structure. Suggest a pump. [Structure] Tapered part 6a in which the diameter of the upper end of the peripheral wall is expanded.
A cylindrical discharge valve member 6 having a closed lower end surface and an open upper end surface is provided, and the tapered portion 6a of the member 6 is mounted on the upper end edge of the stem 12 so as to be liquid-tight and vertically movable so that the upper end of the stem 12 is It was opened and closed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid pouring pump.

[0002]

[Prior Art] [Problems to be solved by the device]

 As a liquid pouring pump, a cylinder with a suction valve that is mounted by hanging a lower end into the container body by a mounting cap that has a fitting cylinder that fits around the outer neck of the container body, and an annular piston that slides inside the cylinder It is known that a stem with a discharge valve, which is attached to the lower end of the stem, is provided with a head with a nozzle attached to the upper end of the stem, and an operating member mounted so as to be vertically movable. These are constructed so that the liquid in the container body is sucked into the cylinder by the action of the internal pump mechanism by moving the operating member up and down, and then the liquid is discharged from the nozzle port of the head. Most of the suction valve and the discharge valve in these pumps have a ball valve element mounted on the valve seat, and this tendency is particularly remarkable in the discharge valve. Many of these ball valves are generally made of metal, and some of them may be made of plastic. However, since it is difficult to produce a true sphere with plastic, it often fails to perform a good valve function, while rust occurs with metal. Therefore, a valve that does not use a ball valve body is desired. The present invention has been made in view of the above points, and proposes a liquid pouring pump having a discharge valve which does not use a ball valve element and has a simple structure and easy to assemble.

[0003]

[Means for Solving the Problems]

 In order to solve the above problems, the liquid pouring pump of the present invention has a mounting cylinder 2 fitted at the outer periphery of the neck of the container body at the upper end, and a cylinder 3 with a suction valve 10 mounted by hanging the lower end inside the container body. And a working member 4 in which an annular piston 11 that slides in the cylinder 3 is attached to the lower end of a stem 12 and a pressing head 14 with a nozzle 13 is attached to the upper end of the stem 12 so as to be vertically movable. In the above, a discharge valve member 6 is provided, which has a cylindrical shape with a lower end surface closed and an upper end surface open, which has a tapered portion 6a in which the upper end portion of the peripheral wall is expanded in a tapered shape. The upper part of the outer surface of the taper portion 6a is placed on the upper end edge of the stem 12 so as to be liquid-tight and vertically movable, and the upper end of the stem 12 is openably and closably closed.

[0004]

[Action]

 When the operation member 4 is pushed down after the screwing above the stem 12 is removed from the state shown in FIG. 1, the inside of the cylinder 3 below the piston 11 is pressurized and pressed above the discharge valve member 6. A gap is created between the valve member 6 and the upper edge of the stem 12 due to this pressing force, and the liquid flowing out from this flows through the flow path above the stem 12 or between the ribs 19 and flows out from the nozzle hole of the head 14. Then, when the pressing of the head 14 is released, the actuating member 4 rises due to the elastic force of the spring 17, the inside of the cylinder 3 becomes negative pressure, and the gap between the valve member 6 and the upper end edge of the stem 12 is liquid-tightly closed. ..

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which 1 denotes a liquid pouring pump. The pump 1 mainly comprises a cylinder 3 with a mounting cylinder 2, an operating member 4, a suction valve member 5 and a discharge valve member 6.

The cylinder 3 has a cylindrical shape with an open upper and lower end surface, and the lower part is reduced in diameter in two stages via a first inclined portion 7 and a second inclined portion 8 each having a tapered shape. The upper end of the pipe 9 is attached to the pipe. A suction valve member 5 is mounted above the suction pipe 9. The suction valve member 5 is composed of a cylindrical base portion 5a having an opened lower end surface, and a rectifying rod-shaped projection portion 5b provided upright from the center of the upper surface of the top wall extending from the upper end edge. It is placed on the second inclined portion 8 below the cylinder 3 and erected vertically in the center of the cylinder 3. A suction valve 10 is formed by the lower end surface of the valve member 5 and the second inclined portion 8 that contacts the surface.

The operating member 4 moves up and down above the opening of the upper end surface of the cylinder 3 on the upper end of the stem 12 provided with an annular piston 11 on the outer circumference of the lower end that slides up and down in the large diameter portion above the first inclined portion 7. A pressing head 14 with a nozzle 13 is provided and configured. At the inner lower end of the system 12 of the actuating member 4, a tubular portion 15 is formed in a double tubular shape with the stem 12 through an inward flange, and the inner surface lower end of the rod-like protruding portion 5b is expanded at the outer peripheral lower end. It is slidably fitted on the outer circumference of the part. Further, a screw thread is provided on the outer circumference of the fitting tube portion 16 of the head 14 fitted to the upper end of the outer circumference of the stem 12 so that it can be screwed with the thread provided on the upper end of the cylinder 3. The actuating member 4 is constantly urged upward by a coil spring 17 whose lower end is locked to a protrusion protruding from the lower part of the cylinder 3.

The discharge valve member 6 has a cylindrical shape with an open upper end having a tapered portion 6a in which the upper end of a cylindrical peripheral wall with a closed lower end is expanded in a tapered shape. It is made of elastic material and its lower part hangs down inside the stem 12.The upper part of the outer surface of the taper part 6a is placed liquid-tight on the upper end of the stem to close the upper end of the stem 12 so that it can be opened and closed. There is. A discharge valve 18 is formed by the tapered portion 6a and the upper end edge portion of the stem 12 that contacts the tapered portion 6a. Further, a plurality of ribs 19 are provided at equal intervals in the circumferential direction in the liquid flow path above the stem 12 so that the lifted upper surface of the discharge valve body 6 is abutted and locked.

When the liquid pouring pump 1 configured as described above is not used, as shown in FIG. 1, the outer periphery of the fitting cylindrical portion 16 of the head 14 is screwed onto the upper end of the cylinder 3 and the inside of the stem 12 is screwed. The cylindrical portion 15 at the lower end is fluid-tightly fitted to the outer circumference of the expanded diameter portion at the lower end of the rod-shaped projection 5b of the suction valve member 5. When the screwing is released during use, the cylindrical portion 15 is disengaged, and when the operating member 4 is moved up and down, the inside of the cylinder 3 becomes negative pressure as the operating member 4 rises, which causes The suction valve 10 opens, and the liquid in the container body is sucked into the cylinder 3 below the piston 11 from the suction pipe 9. Then, when the operating member 4 is pushed down, the suction valve 10 is closed and the discharge valve 18 is opened so that the liquid in the cylinder 3 is discharged from the nozzle 13 of the head 14 via the discharge valve 18. It should be noted that all of the above members may be formed of synthetic resin unless otherwise specified.

[0010]

[Effect of the device]

 As described above, since the liquid pouring pump of the present invention forms the discharge valve without using the ball valve element, there is no problem of rust when the conventional metal ball valve element is used, and the plastic ball A good pump function can be exhibited without the problem of deterioration of the valve function when a valve body is used. In addition, the discharge valve member can be mounted simply by placing it on the upper part of the stem, so that it is easy to assemble, and since it can be incorporated without requiring a special complicated structure, the manufacturing cost is also low. There is also an advantage.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of a liquid pouring pump of the present invention.

[Explanation of symbols]

 2 Mounting cylinder 3 Cylinder 4 Actuating member 5 Suction valve member 6 Discharge valve member 10 Suction valve 11 Annular piston 12 Stem 13 Nozzle 14 Depressing head 6a Tapered portion 18 Discharge valve

Claims (1)

[Scope of utility model registration request] 1. A cylinder 3 with a suction valve 10 which has a mounting cylinder 2 fitted at the outer periphery of the mouth and neck of a container body and which is mounted by suspending the lower end inside the container body, and slides in the cylinder 3. In a liquid pouring pump comprising an operating member 4 in which a push-down head 14 with a nozzle 13 is attached to an upper end of a stem 12 having an annular piston 11 attached to a lower end, and an upper end portion of a peripheral wall is expanded in a tapered shape. Diameter taper
A discharge valve member 6 having a cylindrical shape with a closed lower end surface and an open upper end surface having 6a is provided, and an entire upper portion of the outer surface of the tapered portion 6a of the member 6 is liquid-tight to the upper edge of the stem 12. In addition, a liquid pouring pump, which is placed so as to be movable up and down, and an upper end of the stem 12 is closed so as to be opened and closed.