A water extraction valve

Abstract

The present application belongs to the technical field of fluid valve, and particularly relates to a water pumping valve, which comprises a valve body, an upper cover and a lower cover, an integrated water passing pipe is connected in the middle of the annular partition plate in the valve body, a water inlet is communicated with the upper cavity, a water outlet is communicated with the lower cavity and the inside of the water passing pipe, a blocking ring is installed on the upper end of the water passing pipe, a first water passing gap is left between the outer periphery of the blocking ring and the upper cover, a valve rod is arranged to pass through the water passing pipe and the blocking ring, the lower end of the valve rod is connected with a diaphragm, the outer edge of the diaphragm is fixedly connected between the lower cover and the valve body, a second water passing gap is left between the outer wall of the upper segment of the valve rod and the inner wall of the vertical segment of the through hole in the middle of the blocking ring, a water passing vertical through groove is arranged on the lower segment of the valve rod, a second sealing ring is arranged between the installation step and the blocking ring, and the second sealing ring is in interference contact with the valve rod. The present application can realize multi-stage filtration and radial sealing, thereby greatly reducing the dripping risk in the use process of the product, completely solving the problem of water inlet shaking in the water outlet process, and not producing abnormal sound in working.

Description

Technical Field

[0001] This invention belongs to the field of fluid valve technology, and specifically relates to a water pumping valve. Background Technology

[0002] Because when a diaphragm pump is directly connected to a pressurized water source, the water source cannot be shut off and the water output cannot be adjusted when the pump stops. Therefore, when a diaphragm pump needs to draw water quantitatively from a pressurized water source pipeline, it is generally equipped with a transfer tank and a solenoid valve or mechanical float valve. When the pump draws water from the transfer tank, the solenoid valve or mechanical float valve opens to supply water to the tank. When the tank is full or the pump stops drawing water, the solenoid valve or mechanical float valve closes. This is quite complicated, and the transfer tank needs to be connected to the outside air to ensure smooth water flow, which can easily lead to the growth of bacteria and microorganisms and secondary pollution.

[0003] Existing valves exist to address this problem, but they suffer from the following issues: 1) They typically use a filter screen smaller than 100 mesh for initial filtration, which can cause leakage when there are small foreign objects in the inlet water, resulting in the valve not closing completely; 2) Axial sealing is used, but it can also cause leakage when the water pressure is low; 3) During water discharge, if the seal is too close to the sealing surface, the water pressure at the outlet can easily rise, causing the seal to constantly switch between open and closed states, resulting in water hammer and subsequent vibration of the water pipe; 4) Due to flow restriction or seal vibration, there may be a whistling sound or abnormal noise when water is discharged. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a water pumping valve.

[0005] This invention is implemented as follows: a water valve is provided, comprising a valve body, an upper cover, and a lower cover. An annular partition is integrally formed inside the valve body, with a water pipe integrally connected to the middle of the partition. The upper cover is connected above the valve body, forming an upper cavity between the upper cover and the annular partition. The lower cover is connected below the valve body, forming a lower cavity between the lower cover and the annular partition. An inlet is connected to one side of the valve body, and an outlet is connected to the other side. The inlet is connected to the upper cavity, and the outlet is connected to the lower cavity and the inside of the water pipe. A retaining ring is installed at the upper end of the water pipe, with a gap between the outer circumference of the retaining ring and the upper cover. There is a first water passage gap. The through hole in the middle of the retaining ring is divided into two sections: the upper section is a funnel section that gradually widens upwards, and the lower section is a vertical section. The upper end of the valve stem passes through the water passage pipe and the retaining ring, and the lower end is connected to a diaphragm. The outer edge of the diaphragm is fixedly connected between the lower cover and the valve body. The lower cover has an air hole. A second water passage gap is left between the outer wall of the upper section of the valve stem and the inner wall of the vertical section of the through hole in the middle of the retaining ring. The lower section of the valve stem has a water passage vertical groove. The inner wall of the upper section of the water passage pipe has an installation step. A second sealing ring is provided between the installation step and the retaining ring. The second sealing ring is in interference contact with the valve stem.

[0006] Preferably, multiple arc-shaped pressure plates are integrally provided on the inner wall of the upper cover. The multiple arc-shaped pressure plates form a hollow cylinder inside, and there is a certain distance between adjacent arc-shaped pressure plates. The lower ends of the multiple arc-shaped pressure plates press against the upper surface of the retaining ring.

[0007] In a further preferred embodiment, an annular filter element is provided in the upper cavity outside the arc-shaped pressure plate, with the upper end of the filter element abutting against the upper cover and the lower end abutting against the retaining ring.

[0008] A further preferred embodiment is provided with an annular groove on the inner side of the lower end of the arc-shaped pressure plate, and a buffer ring is provided between the annular groove and the retaining ring. The inner diameter of the buffer ring is smaller than the inner diameter of the hollow cylinder formed by the multiple arc-shaped pressure plates.

[0009] A further preferred embodiment is provided with a spring mounting groove at the upper end of the valve stem, with the lower end of the spring installed in the spring mounting groove and the upper end in contact with the inner wall of the upper cover.

[0010] Further preferably, a first sealing ring is provided at the position where the upper cover connects to the valve body; an installation step is provided on the inner wall of the upper section of the water pipe, and a second sealing ring is provided between the installation step and the retaining ring, the second sealing ring being in interference contact with the valve stem.

[0011] In a further preferred embodiment, the upper surface of the diaphragm is provided with a slot, and the lower end of the valve stem is provided with a locking block, which is locked in the slot.

[0012] Further preferably, the diaphragm has a bent section.

[0013] Compared with the prior art, the advantages of the present invention are as follows:

[0014] 1. Multi-stage filtration is achieved through the first water passage gap and filter element, which can effectively intercept tiny foreign objects, thereby greatly reducing the risk of leakage during product use;

[0015] 2. The radial seal reduces the risk of leakage when the inlet water pressure is low;

[0016] 3. By setting the horn section and vertical section structure on the inner wall of the baffle ring, the pressure in the lower cavity is kept at zero or negative pressure during the water outlet process, which will prevent the water inlet pipe from shaking and the water flow from making abnormal noise.

[0017] 4. By setting a buffer ring, the valve stem will not collide with the retaining ring or the top cover during the water discharge process, thus preventing collision noise. Attached Figure Description

[0018] Figure 1 An external perspective view of the pumping valve provided by the present invention;

[0019] Figure 2 for Figure 1 Sectional view;

[0020] Figure 3 A bottom view of the pumping valve provided by the present invention;

[0021] Figure 4 for Figure 3 View from AA direction;

[0022] Figure 5 for Figure 3 Middle BB direction view;

[0023] Figure 6 An exploded view of the pumping valve provided by this invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This invention provides a water valve, comprising a valve body 1, an upper cover 2, and a lower cover 3. An annular partition 7 is integrally formed inside the valve body 1, with a water pipe 4 integrally connected to the middle of the annular partition 7. The upper cover 2 is connected above the valve body 1, forming an upper cavity between the upper cover 2 and the annular partition 7. The lower cover 3 is connected below the valve body 1, forming a lower cavity between the lower cover 3 and the annular partition 7. An inlet 5 is connected to one side of the valve body 1, and an outlet 6 is connected to the other side. The inlet 5 is connected to the upper cavity, and the outlet 6 is connected to the lower cavity and the interior of the water pipe 4. A retaining ring 8 is installed at the upper end of the water pipe 4, with a first water passage space left between the outer periphery of the retaining ring 8 and the upper cover 2. The gap 9 and the through hole in the middle of the retaining ring 8 are divided into two sections. The upper section is a funnel section that gradually widens upwards, and the lower section is a vertical section. The upper end of the valve stem 10 passes through the water pipe 4 and the retaining ring 8, and the lower end is connected to a diaphragm 11. The outer edge of the diaphragm 11 is fixedly connected between the lower cover 3 and the valve body 1. The lower cover 3 is provided with an air hole. A second water passage gap 13 is left between the outer wall of the upper section of the valve stem 10 and the inner wall of the vertical section of the through hole in the middle of the retaining ring 8. The lower section of the valve stem 10 is provided with a water passage vertical groove 12. The inner wall of the upper section of the water pipe 4 is provided with an installation step. A second sealing ring 18 is provided between the installation step and the retaining ring 8. The second sealing ring 18 is in interference contact with the valve stem 10.

[0026] Initially, the uppermost position of the vertical water passage groove 12 on the valve stem 10 is located below the second sealing ring 18. When using the water pump valve provided in this embodiment, the inlet 5 of the water pump valve is installed at the end of the outlet pipe, and the outlet 6 is connected to the water pump. When the water pump is started, the water pump draws the lower cavity into a negative pressure state through the outlet 6. Since the lower cover 3 has an air hole, the atmospheric pressure forces the diaphragm 11 to move upward. The diaphragm drives the valve stem 10 to move upward. When the upper end of the vertical water passage groove 12 passes the second sealing ring 18 but does not reach the trumpet section position of the retaining ring 8, a relatively small flow of water begins to enter the upper cavity through the inlet 5 and the first water passage gap 9, and then passes through the retaining ring 8 and... The water flows from the flared section between the valve stem 10 through the second water passage gap 13, then into the water passage vertical channel 12. The water then flows directly into the outlet 6 or first through the lower cavity before flowing into the outlet 6, and finally flows out from the outlet 6 into the water pump. When the pressure given by the water pump increases further, the flow rate begins to increase when the upper end of the water passage vertical channel 12 reaches the flared section position of the retaining ring 8. When it is necessary to stop pumping, the water pump is turned off, and the diaphragm 11 drives the valve stem 10 to rebound, thereby pulling the water passage vertical channel 12 back to the lower end of the second sealing ring 18, that is, the pumping valve is closed.

[0027] The presence of the first water passage gap 9 can block, filter, and reduce the pressure of large particles in the water. The presence of the second water passage gap 13 can reduce the pressure of the water flowing through the first water passage gap 9. This ensures that when the valve stem is not moving, the pumping volume of the water pump is greater than the water volume after passing through the second water passage gap. This ensures that once the valve stem rises, the lower cavity will be in a state of no pressure or negative pressure before the valve stem water passage groove 12 is disengaged from the vertical section of the retaining ring. Thus, once the valve stem rises, the upper section of the valve stem cannot contact the second sealing ring to cut off the water flow before the pump stops pumping water, and the water hammer effect will not occur, causing the inlet pipe to vibrate.

[0028] To further secure the retaining ring 8, as an improvement to the technical solution, multiple arc-shaped pressure plates 14 are integrally formed on the inner wall of the upper cover 2. The multiple arc-shaped pressure plates 14 form a hollow cylinder, and there is a certain distance between adjacent arc-shaped pressure plates 14. The lower ends of the multiple arc-shaped pressure plates 14 press against the upper surface of the retaining ring 8. The gaps between adjacent arc-shaped pressure plates 14 are to allow water to pass through.

[0029] To further filter out tiny particles in the water, as an improvement, an annular filter element 15 is provided in the upper cavity outside the arc-shaped pressure plate 14. The upper end of the filter element 15 abuts against the upper cover 2, and the lower end abuts against the retaining ring 8. The filter element 15 is made of PE or PP material.

[0030] To prevent abnormal noise from the valve stem 10 during its up-and-down movement, as an improvement to the technical solution, an annular groove is provided on the inner side of the lower end of the arc-shaped pressure plate 14, and a buffer ring 19 is provided between the annular groove and the retaining ring 8. The inner diameter of the buffer ring 19 is smaller than the inner diameter of the hollow cylinder formed by the multiple arc-shaped pressure plates 14.

[0031] When the valve stem 10 moves up and down, the instability of the water flow will cause the valve stem 10 to tilt. When it tilts and contacts the arc-shaped pressure plate 14, the collision will produce abnormal noise. By setting a buffer ring 19, when the valve stem 10 tilts, it will first contact the buffer ring 19. The buffer ring 19 is an elastic body, which will bounce the valve stem 10 back and keep the valve stem 10 in a vertical state, thus eliminating the abnormal noise in the process.

[0032] To assist the valve stem 10 in rebounding, as an improvement to the technical solution, a spring mounting groove is provided at the upper end of the valve stem 10, and a spring 16 is installed in the spring mounting groove at its lower end and connected to the inner wall of the upper cover 2 at its upper end.

[0033] After the water pump stops working, the negative pressure applied by the water pump is less than the restoring force of the spring 16, which causes the spring 16 to push the valve stem 10 downward.

[0034] To achieve a seal on the valve body, as an improvement, a first sealing ring 17 is provided at the connection between the upper cover 2 and the valve body 1. This prevents water from leaking out from the gap between the upper cover 2 and the valve body 1.

[0035] As a specific connection method between the diaphragm 11 and the lower end of the valve stem 10, the upper surface of the diaphragm 11 is provided with a slot, and the lower end of the valve stem 10 is provided with a locking block 19, which is locked in the slot.

[0036] Since the diaphragm 11 needs to move up and down, a bending section is provided on the diaphragm 11. The bending section allows the diaphragm 11 to move up and down.

Claims

1. A water pump valve, characterized in that, The valve includes a valve body (1), an upper cover (2), and a lower cover (3). An annular partition (7) is integrally installed inside the valve body (1), and a water pipe (4) is integrally connected in the middle of the annular partition (7). The upper cover (2) is connected above the valve body (1), and an upper cavity is formed between the upper cover (2) and the annular partition (7). The lower cover (3) is connected below the valve body (1), and a lower cavity is formed between the lower cover (3) and the annular partition (7). An inlet (5) is connected to one side of the valve body (1), and an outlet (6) is connected to the other side. The inlet (5) is connected to the upper cavity, and the outlet (6) is connected to the lower cavity and the inside of the water pipe (4). A retaining ring (8) is installed at the upper end of the water pipe (4), and a first water passage gap is left between the outer periphery of the retaining ring (8) and the upper cover (2). The gap (9), the through hole in the middle of the retaining ring (8) is divided into two sections, the upper section is a horn section that gradually expands upward, and the lower section is a vertical section. The upper end of the valve stem (10) passes through the water pipe (4) and the retaining ring (8), and the lower end is connected to a diaphragm (11). The outer edge of the diaphragm (11) is fixedly connected between the lower cover (3) and the valve body (1). The lower cover (3) is provided with an air hole. A second water passage gap (13) is left between the outer wall of the upper section of the valve stem (10) and the inner wall of the vertical section of the through hole in the middle of the retaining ring (8). The lower section of the valve stem (10) is provided with a water passage vertical groove (12). The inner wall of the upper section of the water pipe (4) is provided with an installation step. A second sealing ring (18) is provided between the installation step and the retaining ring (8). The second sealing ring (18) is in interference contact with the valve stem (10). Multiple arc-shaped pressure plates (14) are integrally provided on the inner wall of the upper cover (2). The multiple arc-shaped pressure plates (14) form a hollow cylinder inside, and there is a certain distance between adjacent arc-shaped pressure plates (14). The lower ends of the multiple arc-shaped pressure plates (14) press against the upper surface of the retaining ring (8). An annular filter element (15) is provided in the upper cavity outside the arc-shaped pressure plate (14). The upper end of the filter element (15) abuts against the upper cover (2), and the lower end abuts against the retaining ring (8).

2. The pumping valve according to claim 1, characterized in that, An annular groove is provided on the inner side of the lower end of the arc-shaped pressure plate (14), and a buffer ring is provided between the annular groove and the retaining ring (8). The inner diameter of the buffer ring is smaller than the inner diameter of the hollow cylinder formed by the multiple arc-shaped pressure plates (14).

3. The water pumping valve according to claim 1, characterized in that, A spring mounting groove is provided at the upper end of the valve stem (10), and a spring (16) is installed at the lower end in the spring mounting groove, with its upper end in contact with the inner wall of the upper cover (2).

4. The water pumping valve according to claim 1, characterized in that, A first sealing ring (17) is provided at the position where the upper cover (2) connects to the valve body (1).

5. The water pumping valve according to claim 1, characterized in that, The upper surface of the diaphragm (11) is provided with a slot, and the lower end of the valve stem (10) is provided with a block (19), which is locked in the slot.

6. The water pumping valve according to claim 1, characterized in that, The diaphragm (11) has a bent section.

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