JPH04124956U - liquid dispensing pump - Google Patents

Abstract

(57) [Abstract] [Purpose] To propose an excellent liquid dispensing pump that dispenses liquid in a container by vertical movement of an operating member, which eliminates the disadvantages of coil springs by eliminating coil springs. do. [Structure] A sliding fitting part 14 is provided at the inner upper end of the cylinder 3, and a reduced diameter part 16 with a thread 17 is provided at the lower part of the sliding fitting part 14. On the other hand, the sliding fitting part 14 is provided at the upper end of the stem 8. An enlarged diameter portion 13 is provided which fits into the expanded diameter portion 13, and a thread 15 which threadedly engages with the thread 17 is provided below the enlarged diameter portion 13. and,
This thread 15 is configured to have a vertical width narrower than the vertical width of the sliding fitting part 14, and after removing each thread 15, 17 and pulling up the actuating member 4, it is pushed down to a position where it can be pushed down. At this time, the lower end of the enlarged diameter portion 13 is liquid-tightly fitted to the upper end of the sliding fitting portion 14 to prevent liquid from leaking therefrom.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a liquid dispensing pump.

0002

[Conventional technology] [Problem that the idea aims to solve]

As a liquid dispensing pump, a mounting kit with a fitting cylinder fitted to the outer periphery of the neck of the container body is used. A cylinder mounted with its lower end hanging down inside the container body by a cap, and the cylinder A head with a nozzle on the top end of the stem with an annular piston attached to the bottom end that slides inside. It is known that the actuator is equipped with an actuating member attached thereto so as to be able to move up and down. this In these, the actuating member is constantly urged upward by a coil spring, and when used When the head is pushed in, it will automatically rise due to the upward biasing force of the spring. The liquid inside the container is syringed by the action of the internal pump mechanism due to the vertical movement of the operating member. The liquid is sucked into the tank and then poured out from the nozzle opening of the head.

0003 However, coil springs can become deformed due to repeated use. There may be cases where the function cannot be fully demonstrated. Especially with large pumps The load applied to the ring is large, and this tendency becomes noticeable. Therefore, the spring line Measures have been taken to deal with this situation by increasing the strength by increasing the diameter, etc. However, this time, the strength of the spring causes deformation of other parts, which is an inconvenience. This makes it difficult to choose the degree of spring strength. Therefore, the coil spring It is possible to create a configuration that excludes liquids, but if you simply exclude them, the problem of liquid leakage will occur. Ru. In other words, this type of annular piston is subject to loads such as hydraulic pressure in the closing direction, and therefore has good airtightness. If there is a spring, the piston will not move when the pump is in use. Since it is always pressed against and locked to the upper end of the cylinder, liquid leaks from there. There is no danger. On the other hand, if you exclude the spring, the piston will push down the actuating member. Since the container is located at the lowest possible position with almost no load applied, it There is a risk of liquid leaking from there. Taking these points into consideration, this invention does not use coil springs and can be used for many years. The operating member can move up and down smoothly, and the liquid can be poured out smoothly. We propose an excellent liquid pouring pump that does not leak liquid even if it is knocked over.

0004

[Means to solve the problem]

In order to solve the above problems, the liquid dispensing pump of this invention is designed to fit around the outer periphery of the neck of the container body. It has a mounting tube 2 at the upper end and is mounted with the lower end hanging down inside the container body. A cylinder 3 with a suction valve 5 and an annular piston 7 sliding inside the cylinder 3 are shown below. A head 10 with a nozzle 9 is attached to the upper end of the stem 8 attached to the end to enable vertical movement. A liquid dispensing pump consisting of an operating member 4 mounted on the top surface of the head 10. A graspable handle 12 is formed so that the operating member 4 can be pulled up and pushed down, and the upper The inner upper end of the cylinder 3 serves as a sliding fitting part 14, and the lower part of the sliding fitting part 14 A reduced diameter portion 16 with a thread 17 is provided in series, and the sliding fitting portion is provided at the upper end of the stem 8. 14 is formed, and at the same time the enlarged diameter part 13 is formed to be slidably fitted with the slide fitting part 14, and the sliding fitting part a screw having a vertical width narrower than the vertical width of the cylinder 14 and screwing into the screw thread 17 of the cylinder 3; A leakage prevention rod having a strip 15 and an upper end slidably inserted into the lower end of the stem 8. The shaped protrusion 19 is constructed by protruding its lower part to enable upward and downward circulation within the cylinder 3. .

[0005]

[Effect]

A sliding fitting part 14 is provided at the upper end of the cylinder 3, and a thread 17 is provided at the lower part of the sliding fitting part 14. A reduced diameter portion 16 is provided in series, and the upper end of the stem 8 is fitted with the sliding fitting portion 14. An enlarged diameter portion 13 is provided at the bottom thereof, and a thread 1 that threadably engages with the thread 17 is provided at the bottom thereof. 5 are connected in a row, and this thread 15 has a vertical width narrower than the vertical width of the sliding fitting part 14. After removing each screw 15 and 17 and pulling up the actuating member 4, it can be pushed down. When the lower end of the enlarged diameter part 13 is pushed down to the position where it can be moved, the lower end of the enlarged diameter part 13 is pushed down to the upper part of the sliding fitting part 14, as shown in FIG. It fits liquid-tightly at the end and can prevent liquid from leaking from there.

[0006] On the other hand, inside the cylinder 3, a bar-shaped protrusion 19 is provided to prevent leakage, and each screw After removing 15 and 17 and pulling up the actuating member 4, push it down to the position where it can be pushed down. At this time, as shown in FIG. 2, the outer periphery of the tip of the rod-shaped projection 19 fits into the lower end of the inner periphery of the stem 8 in a fluid-tight manner. This prevents liquid from leaking from here.

[0007]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention, in which reference numeral 1 indicates a liquid dispensing pump. Applicable The pump 1 has a cylinder 3 with a mounting tube 2 and an actuating member 4 as main components. has been completed.

[0008] The cylinder 3 has a cylindrical shape with open upper and lower end surfaces, and the lower part is reduced in diameter in two stages. , a suction valve 5 is formed at the upper end inside the narrowest diameter part, and an upper part of the suction pipe 6 is formed at the lower part of the valve 5. The ends are fitted. Also, the outer periphery of the outward flange protruding from the upper part of the outer periphery of the surrounding wall. The mounting tube 2 is installed vertically downward, and the inner peripheral surface of this mounting tube 2 is attached to the outer periphery of the container mouth and neck. Attach the cylinder 3 to the container body by screwing them together and hanging the lower end into the container body. It is configured as follows.

[0009] The actuating member 4 has an annular piston 7 that slides up and down within the widest diameter part of the cylinder 3. The upper end of a stem 8 attached to the outer periphery of the lower end moves up and down above the opening on the upper end surface of the cylinder 3. A head 10 with a nozzle 9 is provided. In addition, there is a discharge valve at the upper part of the stem 8. 11, and a cylindrical handle 12 protruding from the top surface of the head 10. The operating member 4 is configured to be movable up and down by gripping it. Also, the upper end of the outer circumference of stem 8 is expanded in diameter. A sliding fit is provided in which an enlarged diameter part 13 is provided, and this enlarged diameter part 13 is provided at the upper end inside the cylinder 3. It is configured to be able to fit into the portion 14. Further, a thread 15 is connected to the lower part of the enlarged diameter portion 13. The screw thread 15 is connected to the lower part of the sliding fitting part 14 in the cylinder 3 to reduce the diameter. It is configured to be screwed together with a thread 17 provided on the inner surface of the portion 16. On the outer circumference of this stem 8 The provided thread 15 has a vertical width narrower than the vertical width of the sliding fitting portion 14. , When in use, after unscrewing each thread 15 and 17 and pulling up the actuating member 4, push it down. When pressed down to the possible position, the lower end of the enlarged diameter part 13 is placed above the sliding fitting part 14, as shown in FIG. It is configured to fit liquid-tightly into the end.

0010 Also, from the upper surface of the lower step inside the cylinder 3, there is a predetermined space between the inner surface of the cylinder 3 and the upper surface of the lower step. The support cylinder part 18 is erected with a top wall extending from the upper edge of the support cylinder part 18. A rod-shaped protrusion 19 for leakage prevention is protruded from the center of the upper surface, and the outer periphery of the upper end thereof is inserted into the stem 18. It is slidably fitted to the lower part of the circumference. A through hole 20 is bored in the support cylinder part 18. The inside and outside of the cylindrical portion are communicated with each other. This rod-shaped projection 19 has the above-mentioned threads 15, After unscrewing 17 and pulling up the actuating member 4, push it down to the position where it can be pushed down. In this case, as shown in FIG. 2, the tip thereof is configured to fit into the lower end of the inner circumference of the stem 8. .

[0011] The liquid dispensing pump 1 configured as described above operates as shown in FIG. 1 when not in use. While fitting the enlarged diameter portion 13 of the moving member 4 into the sliding fitting portion 14 of the cylinder 3, The actuating member 4 is fixed to the cylinder 3 by threading the threads 15 and 17 together. When using it, unscrew each screw 15 and 17, grasp the handle 12, and operate it. When the member 4 is moved up and down, the suction valve 5 opens as the actuating member 4 rises, and the suction valve 5 opens inside the container. The liquid is sucked up from the suction pipe 6 and passed through the through hole 20 from the suction valve 5 to the piston. It is sucked into the cylinder 3 at the bottom of the tank. Next, when the actuating member 4 is pushed down, , the suction valve 5 closes, the discharge valve 11 opens, and the liquid in the cylinder 3 passes through the stem 8, It is constructed so that it is discharged from a nozzle 9 of a head 10 via a discharge valve 11.

0012

[Effect of the idea]

As explained above, the liquid dispensing pump of the present invention does not use coil springs and It is designed to move the operating member up and down by grasping the handle on the top of the pad, so it can be used for many years. The operating member can move up and down smoothly even if the container is accidentally knocked over. It is also an excellent pump with no risk of liquid leakage.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of essential parts of an embodiment of the liquid dispensing pump of the present invention.

FIG. 2 is a longitudinal cross-sectional view of a main part of the same embodiment.

[Explanation of symbols]

2 Mounting tube 3 cylinder 4 Operating member 7 Piston 8 Stem 9 Nozzle 10 heads 12 Handle 13 Expanded diameter part 14 Sliding fitting part 15 Screw 16 Reduced diameter part 17 Screw 19 Rod-like process

Claims (1)

[Scope of utility model registration request] 1. A cylinder 3 with a suction valve 5, which has a mounting tube 2 at its upper end that fits around the outer periphery of the mouth neck of a container body, and which is mounted with its lower end hanging down inside the container body;
A liquid dispensing pump consisting of a stem 8 having an annular piston 7 attached to its lower end that slides therein, an operating member 4 having a head 10 with a nozzle 9 attached to its upper end and mounted so as to be movable up and down, the head 10 A grippable handle 12 is formed on the upper surface to enable lifting and pushing down of the operating member 4, and the upper end of the cylinder 3 serves as a sliding fitting part 14, and the lower part of the sliding fitting part 14 is provided with a handle 12 that can be grasped. A reduced diameter part 16 provided with a thread 17 is provided in series, and an enlarged diameter part 13 is formed at the upper end of the stem 8 to be slidably fitted to the sliding fitting part 14, and the sliding fitting part 13 is formed at the lower part thereof. A rod-shaped protrusion for preventing leakage, which has a vertical width narrower than the vertical width of the joining part 14 and has a thread 15 that is threadedly engaged with the thread 17 of the cylinder 3, and whose upper end is slidably inserted into the lower end of the stem 8. 19, the lower part of which protrudes to enable upward and downward circulation within the cylinder 3.