Hanging core for hand-operated water pump of water well

Abstract

The utility model relates to the field of water well hand-cranking water pumps, in particular to a water well hand-cranking water pump hanging core which comprises a piston, a hanging rod, a piston valve rubber pad, an upper metal gasket, a lower metal gasket and a spring. A lower steel gasket with the inner diameter smaller than the diameter of the through hole is arranged at the bottom of the piston, a vertical rod concentric with the through hole is arranged in the middle of the hanging rod, the upper metal gasket, the piston valve rubber pad and the lower metal gasket are sequentially arranged on the vertical rod in a sleeving mode, and the upper metal gasket and the lower metal gasket clamp the piston valve rubber pad between the upper metal gasket and the lower metal gasket through a bolt assembly. The spring is arranged on the vertical rod in a sleeving mode and located above the upper metal gasket, the outer diameter of the piston valve rubber pad is smaller than the inner diameter of the lower end of the through hole and larger than the inner diameter of the lower steel gasket, the water pumping efficiency is effectively improved, and the service life of the hanging core is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hand-cranked water pumps for wells, and specifically to a lifting core for a hand-cranked water pump for wells. Background Technology

[0002] In rural areas, wells are a vital source of drinking water, and hand-cranked water pumps are a common form of pumping equipment. However, with prolonged and frequent use, numerous problems have emerged in the internal components of these pumps. Among these, the piston valve rubber gasket, a critical component, is highly susceptible to fatigue fracture. Due to the frequent water demand in rural areas, hand-cranked water pumps are used for extended periods and at high frequencies. The piston valve rubber gasket endures significant pressure during its continuous reciprocating motion, eventually leading to fatigue and breakage. This causes the pump to malfunction, severely impacting villagers' daily water supply. This not only reduces the lifespan of the hand-cranked water pump but also increases the cost of replacing the pump core, placing a financial burden on the villagers.

[0003] Furthermore, the existing piston valve rubber gasket connection method has significant drawbacks. It relies on a single-sided connection to the through-hole inside the piston. At the middle connection point, due to the frequent and continuous bending of the piston valve rubber gasket during pump operation, stress concentrates, causing it to easily break and separate after a short time. This results in poor pump sealing and severely affects pumping efficiency. Moreover, this connection method limits the opening angle of the piston valve rubber gasket, allowing water to flow only from one side, resulting in a small output that cannot meet the water needs of villagers. Therefore, developing a better-performing, longer-lasting, and more efficient hand-cranked well pump with a core is an urgent problem to be solved. Utility Model Content

[0004] This utility model provides a core lifting mechanism for a hand-cranked water pump for water wells, in order to solve the problems of the prior art.

[0005] The purpose of this utility model can be achieved through the following technical solution: A hand-cranked water pump core for a well includes: a piston, a lifting rod, a piston valve rubber gasket, an upper metal washer, a lower metal washer, and a spring. The piston is fixedly connected to the lower end of the lifting rod. A through hole is provided in the middle of the piston. A lower steel washer with an inner diameter smaller than the diameter of the through hole is provided at the bottom of the piston. A vertical rod concentric with the through hole is provided in the middle of the lifting rod. The upper metal washer, the piston valve rubber gasket, and the lower metal washer are sequentially sleeved on the vertical rod. The upper metal washer and the lower metal washer are clamped together by a bolt assembly. The spring is sleeved on the vertical rod and located above the upper metal washer. The outer diameter of the piston valve rubber gasket is smaller than the lower inner diameter of the through hole and larger than the inner diameter of the lower steel washer.

[0006] In a further improvement, the upper metal washer is symmetrically provided with hexagonal socket screws, which pass through the upper metal washer, the piston valve rubber gasket and the lower metal washer in sequence, and the lower end of the hexagonal socket screws is threadedly connected to a nut located at the lower end of the lower metal washer.

[0007] In a further improvement, the upper and lower metal washers are made of stainless steel.

[0008] In a further improvement, the boom includes at least two sets of connecting rods, an upper steel washer is provided on the upper side inside the piston, the connecting rod passes through the upper steel washer, the piston and the lower steel washer in sequence, and a nut one located at the upper end of the upper steel washer and a nut two located at the lower end of the lower steel washer are threadedly connected to the connecting rod.

[0009] In a further improvement, a screw is threaded onto the upper steel washer, and the screw passes through the upper steel washer, the piston, and the lower steel washer in sequence before being secured by a bottom nut.

[0010] Compared with existing technologies, the beneficial effects of this utility model of a hand-cranked water pump core lifting device for wells are as follows:

[0011] The lifting core of this hand-cranked water pump has been improved from the original piston rubber pad single-sided piston connection structure. The component consisting of an upper metal washer, a piston valve rubber pad and a lower metal washer can move up and down on the vertical rod by means of the hole shaft under the action of the spring downward force, so that water can flow out from any direction, significantly increasing the water inlet and outlet area and effectively improving the pumping efficiency.

[0012] Furthermore, the metal washers at both ends of the piston valve rubber gasket enhance the overall structural strength, reduce the probability of damage to the piston valve rubber gasket, and thus extend the service life of the lifting core. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the closed structure of this utility model.

[0015] Figure 3 This is an open structural schematic diagram of the present invention.

[0016] Figure 4 for Figure 1 Top view structural diagram

[0017] In the diagram, 1-piston, 11-through hole, 12-lower steel washer, 13-upper steel washer, 14-screw, 2-lifting rod, 21-vertical rod, 22-connecting rod, 23-nut one, 24-nut two, 3-piston valve rubber gasket, 4-upper metal washer, 5-lower metal washer, 6-spring, 7-internal hexagonal screw, 71-nut three. Detailed Implementation

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] The following is a description of the embodiments and appendices. Figures 1-4 The technical solution of this utility model will be further described below.

[0020] Example 1

[0021] A hand-cranked water pump core for a well includes: a piston 1, a lifting rod 2, a piston valve rubber gasket 3, an upper metal washer 4, a lower metal washer 5, and a spring 6. The lower end of the lifting rod 2 is fixedly connected to the piston 1. The piston 1 has a through hole 11 in the middle. The bottom of the piston 1 has a lower steel washer 12 with an inner diameter smaller than the diameter of the through hole 11. The middle part of the lifting rod 2 has a vertical rod 21 concentric with the through hole 11. The upper metal washer 4, the piston valve rubber gasket 3, and the lower metal washer 5 are sequentially sleeved on the vertical rod 21. The upper metal washer 4 and the lower metal washer 5 are clamped together by a bolt assembly 6. The spring 6 is sleeved on the vertical rod 21 and located above the upper metal washer 4. The outer diameter of the piston valve rubber gasket 3 is smaller than the lower inner diameter of the through hole 11 and larger than the inner diameter of the lower steel washer 12.

[0022] like Figures 1-4 As shown, the working principle of this utility model is as follows:

[0023] When the hand-cranked water pump is operated, the piston moves upward, increasing the volume inside the pump cylinder and decreasing the pressure, creating a relative vacuum. External water pressure forces water in from the bottom. At this time, under the action of water pressure and gravity, the upper metal washer, the piston valve rubber gasket, and the lower metal washer move downward, closing the through hole in the middle of the piston and preventing the sucked-in water from flowing back. The water is thus retained in the pump cylinder space above the piston.

[0024] When the piston moves downward, the volume inside the pump cylinder decreases, the pressure increases, and the water pressure above the piston rises. Under the action of water pressure, the upper metal washer, the piston valve rubber gasket, and the lower metal washer move upward, opening the through hole, allowing the water above the piston to be forced out of the pump through the through hole, thus realizing the water pumping process.

[0025] This hand-operated water pump core has been improved upon the original structure where the piston was connected to the piston on one side only by a rubber gasket. The assembly, consisting of an upper metal washer, a piston valve rubber gasket, and a lower metal washer, can move up and down on a vertical rod under the downward force of a spring and a shaft-hole connection. This design allows water to flow out from any direction, significantly increasing the inlet and outlet area and effectively improving pumping efficiency. Furthermore, the metal gaskets at both ends of the piston valve rubber gasket enhance the overall structural strength, reducing the probability of damage to the piston valve rubber gasket and thus extending the service life of the core.

[0026] It effectively solves the problems of easy fatigue and breakage of piston valve rubber gaskets and low water output caused by connection method in the existing technology, and improves the service life and pumping efficiency of hand-cranked water pumps.

[0027] In a further preferred embodiment, the upper metal washer 4 is symmetrically provided with hexagonal socket head cap screws 7. The hexagonal socket head cap screws 7 pass sequentially through the upper metal washer 4, the piston valve rubber gasket 3, and the lower metal washer 5. The lower end of the hexagonal socket head cap screws 7 is threadedly connected to a nut 71 located at the lower end of the lower metal washer 5. The hexagonal socket head cap screws and the nut 71 cooperate to tightly fix the upper metal washer, the piston valve rubber gasket, and the lower metal washer together, ensuring that the piston valve rubber gasket remains in a stable installation state during the operation of the water pump and will not loosen due to vibration or water flow impact.

[0028] As a further preferred embodiment, the upper metal washer 4 and the lower metal washer 5 are made of stainless steel. Stainless steel has good corrosion resistance and high strength. In the working environment of the water pump, it can effectively resist water erosion and is not easily deformed during long-term use, thus maintaining a good clamping effect on the piston valve rubber gasket.

[0029] As a further preferred embodiment, the lifting rod 2 includes at least two sets of connecting rods 22. An upper steel washer 13 is provided on the upper side of the piston 1. The connecting rods 22 pass sequentially through the upper steel washer 13, the piston 1, and the lower steel washer 12. A nut 23 located at the upper end of the upper steel washer 13 and a nut 24 located at the lower end of the lower steel washer 12 are threaded onto the connecting rods 22. Through the two sets of connecting rods in conjunction with the upper and lower steel washers, and the nuts 1 and 2, the piston and the lifting rod are firmly connected. During the piston's up-and-down movement, the force can be evenly distributed, improving the reliability of the connection between the piston and the lifting rod. This makes the piston's movement within the pump body more stable, reduces component wear caused by unstable connections, and extends the overall service life of the water pump.

[0030] As a further preferred embodiment, the upper steel washer 13 is threaded with a screw 14. The screw 14 passes through the upper steel washer 13, the piston 1 and the lower steel washer 12 in sequence and is fixed by the bottom nut. The screw and the bottom nut further strengthen the connection between the upper steel washer, the piston and the lower steel washer, forming an additional fastening structure to prevent the piston from loosening or shifting with other components when the water pump is working, thereby improving the reliability of the hand-cranked water pump during long-term use.

[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A type of core lifting device for a hand-cranked water pump in a well, characterized in that, include: The assembly comprises a piston, a lifting rod, a piston valve rubber gasket, an upper metal washer, a lower metal washer, and a spring. The lower end of the lifting rod is fixedly connected to the piston. The piston has a through hole in its middle. The bottom of the piston has a lower steel washer with an inner diameter smaller than that of the through hole. The lifting rod has a vertical rod concentric with the through hole in its middle. The upper metal washer, the piston valve rubber gasket, and the lower metal washer are sequentially fitted onto the vertical rod. The upper and lower metal washers are clamped together by bolts. The spring is fitted onto the vertical rod and located above the upper metal washer. The outer diameter of the piston valve rubber gasket is smaller than the lower inner diameter of the through hole but larger than the inner diameter of the lower steel washer.

2. The water pump core lifting mechanism for a well according to claim 1, characterized in that, The upper metal washer is symmetrically provided with hexagonal socket screws, which pass through the upper metal washer, the piston valve rubber gasket and the lower metal washer in sequence. The lower end of the hexagonal socket screw is threadedly connected to a nut located at the lower end of the lower metal washer.

3. The water pump core lifting mechanism for a well according to claim 1, characterized in that, The upper and lower metal washers are made of stainless steel.

4. The core lifting mechanism for a hand-cranked water pump in a well according to claim 1, characterized in that, The lifting rod includes at least two sets of connecting rods. An upper steel washer is provided on the upper side inside the piston. The connecting rod passes through the upper steel washer, the piston and the lower steel washer in sequence. Nut 1 located at the upper end of the upper steel washer and nut 2 located at the lower end of the lower steel washer are threadedly connected to the connecting rod.

5. A water pump core lifting device for a well according to claim 4, characterized in that, The upper steel washer is threaded with a screw, which passes through the upper steel washer, the piston and the lower steel washer in sequence and is then fixed by the bottom nut.

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