Oil-water non-mixing type low-control-pressure leakage-free hydraulic control water valve

Abstract

The invention belongs to the technical field of water control valves, and particularly relates to an oil-water non-mixing type low-control-pressure leakage-free hydraulic control water valve which comprises a valve body, and a spring-cavity-free control piston, a water valve element, a special sealing piece, a spring cavity control piston and a reset spring are assembled in the valve body. The non-spring cavity control piston, the water valve element, the spring cavity control piston and the reset spring are sequentially connected from left to right, and the special sealing piece is assembled between the non-spring cavity control piston and the spring cavity control piston. Oil-water impact is reduced through the splitter plate, the durability of the valve body is improved, and the splitter box is matched with the filter screen to reduce and control oil temperature and prevent overheating damage. A temperature sensor is arranged to monitor oil temperature, a limiting sensor ensures complete piston resetting, and use of a hole channel is prevented from being affected. In addition, the extrusion block facilitates quick replacement of the reset spring, and stable operation of the valve is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of water control valves, and in particular relates to an oil-water non-mixing type low control pressure non-leakage type hydraulically controlled water valve. Background Art

[0002] Water control valve is a general term for a series of valves with different functions that utilize water pressure, kinetic energy and potential energy, through a main valve combined with different pilot valves and components. It is not the name of a single valve, but the name of a series of products. According to different functions, water control valves can be divided into many types, such as remote control float valves, adjustable pressure reducing valves, slow closing silencer check valves, flow control valves, pressure relief / pressure holding valves, hydraulic electric control valves, etc.

[0003] The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve is a special type of valve designed to achieve effective separation of oil-water mixtures and maintain leakage-free performance under low control pressure. However, oil and water are very fluid and flow very quickly, so they are prone to impact the inner wall when passing through the water control valve. If this continues for a long time, the durability of the water control valve will be reduced. Summary of the invention

[0004] The purpose of the present invention is to provide an oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve, aiming to solve the problem in the prior art. However, the fluidity of oil and water is very large and the flow is also very fast, so it is easy to impact the inner wall when passing through the water control valve. If this continues for a long time, the durability of the water control valve will be reduced.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an oil-water non-mixing type, low control pressure, non-leakage hydraulically controlled water valve, comprising a valve body, wherein the interior of the valve body is equipped with a spring-free chamber control piston, a water valve core, a special seal, a spring chamber control piston and a return spring, wherein the spring-free chamber control piston, the water valve core, the spring chamber control piston and the return spring are connected in sequence from left to right, and the special seal is assembled between the spring-free chamber control piston and the spring chamber control piston.

[0006] As a preferred embodiment of the oil-water non-mixing, low control pressure, non-leakage hydraulically controlled water valve of the present invention, the top of the valve body is provided with a first water inlet hole and a second water inlet hole, the bottom of the valve body is connected with a drain port, and the first oil control hole and the second oil control hole are installed on both sides of the top of the valve body.

[0007] As a preferred embodiment of the oil-water non-mixing, low control pressure, leakage-free hydraulically controlled water valve of the present invention, a support block is installed inside the first water inlet hole and the second water inlet hole, a connecting block is installed on the top of the support block, a diverter plate is installed on the inner circle of the connecting block, a filter plate is installed on the inner circle of the connecting block and at the bottom end of the diverter plate, and a bolt is installed on the top of the connecting block.

[0008] As a preferred embodiment of the oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve of the present invention, a protrusion is installed at the bottom end of the connecting block, a mounting plate is rotatably connected to the surface of the protrusion, and a first screw is threadedly connected to the bottom end of the mounting plate.

[0009] As a preferred embodiment of the oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve of the present invention, the filter plate is fixedly connected to the connecting block through the first screw and the mounting plate.

[0010] As a preferred embodiment of the oil-water non-mixing, low control pressure, non-leakage hydraulically controlled water valve of the present invention, support rings are installed inside the first oil control hole and the second oil control hole, diverter boxes are arranged inside the first oil control hole and the second oil control hole, a filter is installed in the inner cavity of the diverter box, a limiting ring is integrally connected to the top of the diverter box, and a second screw is connected to the top of the limiting ring.

[0011] As a preferred embodiment of the oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve of the present invention, the diverter box is a metal hollow shape, and the filter is a metal material adapted to be assembled in the inner cavity of the diverter box.

[0012] As a preferred oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve of the present invention, a limit sensor is installed at the bottom end of the valve body and close to the end of the control piston without a spring chamber, drainage holes are opened on the left and right side walls of the valve body, a temperature sensor is installed at the bottom end of the drainage hole, and a sealing plug is connected to the end of the drainage hole.

[0013] As a preferred embodiment of the oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve of the present invention, the side wall of the valve body close to the return spring is connected to an extrusion block, and the outer side wall of the extrusion block is connected to a third screw.

[0014] As a preferred embodiment of the oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve of the present invention, the extrusion block is fixedly connected to the valve body by a third screw, and the inner side wall of the extrusion block is fitted and fixed to the end of the return spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The invention innovatively designs a non-leakage, low-control-pressure, oil-water-immiscible hydraulically controlled water valve. The diverter plate reduces the impact of oil and water to improve the durability of the valve body. The diverter box and the filter screen cooperate to reduce the control oil temperature to prevent overheating damage. A temperature sensor is equipped to monitor the oil temperature, and a limit sensor ensures that the piston is fully reset to avoid affecting the use of the channel. In addition, the extrusion block design facilitates the quick replacement of the reset spring to ensure the stable operation of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure in which the second water inlet hole and the first water inlet hole of the main body of the present invention are under the same pressure;

[0020] Figure 3 is a schematic diagram of the cross-sectional structure of the second water inlet of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection block structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the mounting plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the second oil control hole of the present invention;

[0024] Figure 7 It is a schematic diagram of the connection structure of the diverter box of the present invention.

[0025] In the figure: 1. Control piston without spring chamber; 2. Water valve core; 3. Special seal; 4. Control piston with spring chamber; 5. Return spring; 6. Drain port; 7. Second water inlet hole; 8. First water inlet hole; 9. First oil control hole; 10. Second oil control hole; 11. Support block; 12. Bolt; 13. Connecting block; 14. Diverter plate; 15. Filter plate; 16. Bump; 17. Mounting plate; 18. First screw; 19. Support ring; 20. Limit ring; 21. Second screw; 22. Diverter box; 23. Filter screen; 24. Limit sensor; 25. Drain hole; 26. Sealing plug; 27. Temperature sensor; 28. Extrusion block; 29. ​​Third screw; 30. Valve body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] See also Figure 1-7The present invention provides the following technical solution: an oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve, comprising a valve body 30, wherein the interior of the valve body 30 is equipped with a spring-free chamber control piston 1, a water valve core 2, a special seal 3, a spring chamber control piston 4 and a return spring 5, wherein the spring-free chamber control piston 1, the water valve core 2, the spring chamber control piston 4 and the return spring 5 are connected in sequence from left to right, and the special seal 3 is assembled between the spring-free chamber control piston 1 and the spring chamber control piston 4.

[0029] In the preferred embodiment: the top of the valve body 30 is provided with a first water inlet hole 8 and a second water inlet hole 7, the bottom of the valve body 30 is connected with a drain port 6, and the top of the valve body 30 is provided with a first oil control hole 9 and a second oil control hole 10 on both sides.

[0030] In the embodiment, the working principle of the valve body 30 is as follows: as shown in Figure 1, the reset spring 5 makes the water valve core 2 close to the left end, and the special seal 3 contacts the inclined surface of the inner cavity of the valve body 30. The water valve core 2 is initially in a closed state, that is, the water valve core 2 is close to the left end, and the first water inlet hole 8 and the second water inlet hole 7 are in a disconnected state. When the second oil control hole 10 releases pressure and the first oil control hole 9 supplies control oil, the water valve core 2 drives the special seal 3 to move to the right, and the first water inlet hole 8 and the second water inlet hole 7 are connected. This structure can ensure that the second water inlet hole 7 can withstand high pressure, while the first water inlet hole 8 cannot withstand high pressure.

[0031] It should be noted that: due to the use of the special seal 3, when water enters the second water inlet hole 7, the water pressure will squeeze the special seal 3 and then it will be close to the inclined surface of the inner cavity of the valve body 30, so that it can withstand high pressure when water enters the second water inlet hole 7. Similarly, if water enters the first water inlet hole 8, the second oil control hole 10 releases pressure, and the first oil control hole 9 supplies control oil. Due to the generation of water pressure, the special seal 3 will be squeezed, causing the special seal 3 to move to the right, which will connect the first water inlet hole 8 and the second water inlet hole 7. This is the principle that the second water inlet hole 7 can withstand high pressure, while the first water inlet hole 8 cannot withstand high pressure.

[0032] It is worth noting that in order to make the first water inlet 8 and the second water inlet 7 withstand high pressure, it is necessary to adopt Figure 2 The structure shown.

[0033] The working principle is the same as above, except that the stroke of the special seal 3 needs to be lengthened so that the special seal 3 is between the first water inlet hole 8 and the second water inlet hole 7. In this way, when water is flowing into the first water inlet hole 8 and the second water inlet hole 7, the water pressure will not affect the special seal 3 and cause it to move. The first water inlet hole 8 and the second water inlet hole 7 are connected, that is, when oil is flowing into the first oil control hole 9 and the second oil control hole 10, the moving distance of the spring chamber control piston 4 and the springless chamber control piston 1 will not allow the special seal 3 to move out from between the first water inlet hole 8 and the second water inlet hole 7. This ensures that the first water inlet hole 8 and the second water inlet hole 7 can withstand high pressure.

[0034] Therefore, the valve body 30 is truly leak-free and the control pressure can be very low.

[0035] In addition, reference Figure 1 and 2 , the setting of the drain port 6, when the seal between the spring chamber control piston 4 and the non-spring chamber control piston 1 and the valve body 30 is damaged, if the seal near the second water inlet hole 7 is damaged, the excess water will flow out from the drain port 6 when the spring chamber control piston 4 moves to the right. If the seal near the second oil control hole 10 is damaged, the excess water will be discharged from the drain port 6 when the spring chamber control piston 4 moves to the left, and the excess control oil will also be discharged from the drain port 6. Similarly, the non-spring chamber control piston 1 is also the same. Subsequently, if oil and water invade between the two seals, they can also be discharged from the drain port 6 when the spring chamber control piston 4 and the non-spring chamber control piston 1 move.

[0036] The seals connected between the spring chamber control piston 4 and the non-spring chamber control piston 1 can ensure the sealing between the second oil control hole 10 and the second water inlet hole 7 and the first oil control hole 9 and the first water inlet hole 8. Then the drain port 6 can discharge the excess control oil and water, so that after the valve body 30 is used, no excess control oil and water will remain in the inner cavity. Then, the use of the seal and the drain port 6 ensures that the oil and water will not mix, so that the control oil is emulsified.

[0037] Embodiment 2

[0038] See also Figure 1-7 A support block 11 is installed inside the first water inlet hole 8 and the second water inlet hole 7, a connecting block 13 is installed on the top of the support block 11, a diverter plate 14 is installed on the inner circle of the connecting block 13, a filter plate 15 is installed on the inner circle of the connecting block 13 and at the bottom end of the diverter plate 14, and a bolt 12 is installed on the top of the connecting block 13.

[0039] In the preferred embodiment: a protrusion 16 is installed at the bottom end of the connecting block 13 , a mounting plate 17 is rotatably connected to the surface of the protrusion 16 , and a first screw 18 is threadedly connected to the bottom end of the mounting plate 17 .

[0040] In the preferred embodiment, the filter plate 15 is fixedly connected to the connection block 13 via the first screw 18 and the mounting plate 17 .

[0041] In the embodiment, the valve utilizes the diverter plate 14 to effectively divert the oil and water entering from the first water inlet hole 8 and the second water inlet hole 7, which significantly reduces the direct impact of the rapid flow of oil and water on the valve body 30, thereby avoiding the problem of reduced durability of the valve body 30.

[0042] Specifically: Reference Figure 3 , 4When the oil and water flow into the valve body 30 from the first water inlet hole 8 and the second water inlet hole 7, they first pass through the diverter plate 14, which breaks up and diverts the oil and water, and then the oil and water pass through the filter plate 15 and flow into the valve body 30. This design effectively alleviates the impact of the oil and water flow, thereby avoiding the problem of reduced durability of the valve body 30.

[0043] In order to facilitate the disassembly and replacement of the filter plate 15 when it is blocked, we designed a first screw 18 to connect the mounting plate 17 and the filter plate 15. By disassembling the first screw 18, the two can be easily separated and fixed. When the filter plate 15 needs to be removed, it is only necessary to separate the mounting plate 17 and then rotate the mounting plate 17 along the protrusion 16 to smoothly remove the filter plate 15 from the bottom end of the connecting block 13. In addition, the connecting block 13 is connected to the supporting block 11 by the bolt 12. This design allows the connecting block 13 to be easily removed and replaced from the first water inlet hole 8 and the second water inlet hole 7 when necessary.

[0044] Embodiment 3

[0045] See also Figure 1-7 A support ring 19 is installed inside the first oil control hole 9 and the second oil control hole 10, a diverter box 22 is arranged inside the first oil control hole 9 and the second oil control hole 10, a filter screen 23 is installed in the inner cavity of the diverter box 22, and the top of the diverter box 22 is integrally connected to a limit ring 20, and the top of the limit ring 20 is connected to a second screw 21.

[0046] In the preferred embodiment, the diverter box 22 is a metal hollow shape, and the filter screen 23 is made of metal material and is adapted to be assembled in the inner cavity of the diverter box 22 .

[0047] In the embodiment, the diverter box 22 and the filter screen 23 are cleverly coordinated to further divert and merge the control oil entering from the first oil control hole 9 and the second oil control hole 10. This process effectively reduces the temperature of the control oil and prevents potential damage to the interior of the valve body 30 caused by overheating of the control oil.

[0048] Specifically, refer to Figure 6 and 7 When the control oil is fed in through the first oil control hole 9 and the second oil control hole 10, they will enter the diverter box 22. In the diverter box 22, the control oil is continuously diverted and merged through the filter 23, which effectively reduces the oil temperature, thereby avoiding possible damage to the inside of the valve body 30 caused by excessive oil temperature.

[0049] For easy maintenance, the second screw 21 is designed so that the connection between the diverter box 22 and the support ring 19 can be easily released, thereby allowing the diverter box 22 to be conveniently removed from the first oil control hole 9 and the second oil control hole 10 .

[0050] Embodiment 4

[0051] See also Figure 1-7 A limit sensor 24 is installed at the bottom of the valve body 30 and close to the end of the control piston 1 without a spring chamber. The left and right side walls of the valve body 30 are provided with drainage holes 25. A temperature sensor 27 is installed at the bottom of the drainage hole 25. A sealing plug 26 is connected to the end of the drainage hole 25.

[0052] In the embodiment, the valve body 30 is also equipped with a temperature sensor 27, which can monitor the specific temperature of the control oil in real time to ensure that the valve operates within a safe temperature range. At the same time, the addition of the limit sensor 24 effectively monitors the reset degree of the springless chamber control piston 1, avoiding the risk of affecting the normal use of the first water inlet 8 and the second water inlet 7 due to incomplete reset.

[0053] Specifically, when the limit sensor 24 is in the initial state of the water valve core 2 and the valve body 30 is in the closed state, the limit sensor 24 is used to monitor the position of the spring-free chamber control piston 1, thereby ensuring that the first water inlet hole 8 and the second water inlet hole 7 are in a disconnected state.

[0054] In addition, the temperature sensor 27 monitors the temperature of the control oil after the control oil is fed from the first oil control hole 9 and the second oil control hole 10 and is divided and merged, to ensure that the valve operates within a safe temperature range.

[0055] Embodiment 5

[0056] See also Figure 1-7 The side wall of the valve body 30 close to the return spring 5 is connected to an extrusion block 28 , and the outer side wall of the extrusion block 28 is connected to a third screw 29 .

[0057] In the preferred embodiment, the extrusion block 28 is fixedly connected to the valve body 30 via the third screw 29 , and the inner wall of the extrusion block 28 is fitted and fixed to the end of the return spring 5 .

[0058] In the embodiment, in the design of the valve, special consideration is given to the convenient replacement of the reset spring 5. Through the ingenious disassembly and assembly design of the extrusion block 28 and the valve body 30, the user can easily disassemble and replace the reset spring 5. When the elasticity of the reset spring 5 is insufficient, it can be quickly replaced without complicated operations, thereby ensuring the continuous and stable operation of the valve.

[0059] In summary, according to the first to fifth embodiments, the present invention designs an innovative oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve, which is characterized by improving the durability and reliability of the valve through a series of sophisticated structural designs. Specifically, the valve uses a diverter plate 14 to effectively divert the oil and water entering from the first water inlet hole 8 and the second water inlet hole 7, which significantly reduces the direct impact of the rapid flow of oil and water on the valve body 30, thereby avoiding the problem of reduced durability of the valve body 30. Next, the diverter box 22 and the filter screen 23 are cleverly coordinated to further divert and converge the control oil entering from the first oil control hole 9 and the second oil control hole 10. This process effectively reduces the temperature of the control oil and prevents potential damage to the inside of the valve body 30 caused by overheating of the control oil.

[0060] In addition, the valve is also equipped with a temperature sensor 27, which can monitor the specific temperature of the control oil in real time to ensure that the valve operates within a safe temperature range. At the same time, the addition of the limit sensor 24 effectively monitors the reset degree of the springless chamber control piston 1, avoiding the risk of affecting the normal use of the first water inlet 8 and the second water inlet 7 due to incomplete reset.

[0061] Finally, in the design of the valve, special consideration is given to the convenient replacement of the reset spring 5. Through the ingenious disassembly and assembly design of the extrusion block 28 and the valve body 30, the user can easily disassemble and replace the reset spring 5. When the elasticity of the reset spring 5 is insufficient, it can be quickly replaced without complicated operations, thereby ensuring the continuous and stable operation of the valve.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oil-water non-mixing type low control pressure non-leakage hydraulically controlled water valve, comprising a valve body (30), characterized in that: The valve body (30) is internally equipped with a non-spring chamber control piston (1), a water valve core (2), a special sealing component (3), a spring chamber control piston (4) and a return spring (5); The springless chamber control piston (1), the water valve core (2), the spring chamber control piston (4) and the return spring (5) are connected in sequence from left to right, and the special seal (3) is assembled between the springless chamber control piston (1) and the spring chamber control piston (4).

2. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 1 is characterized by: The top end of the valve body (30) is provided with a first water inlet hole (8) and a second water inlet hole (7), the bottom end of the valve body (30) is connected with a water drain port (6), and the first oil control hole (9) and the second oil control hole (10) are installed on both sides of the top end of the valve body (30).

3. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 2 is characterized in that: A support block (11) is installed inside the first water inlet hole (8) and the second water inlet hole (7); a connecting block (13) is installed at the top end of the support block (11); a diverter plate (14) is installed at the inner circle of the connecting block (13); a filter plate (15) is installed at the inner circle of the connecting block (13) and at the bottom end of the diverter plate (14); and a bolt (12) is installed at the top end of the connecting block (13).

4. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 3 is characterized by: A protrusion (16) is installed at the bottom end of the connection block (13), a mounting plate (17) is rotatably connected to the surface of the protrusion (16), and a first screw (18) is threadedly connected to the bottom end of the mounting plate (17).

5. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 4 is characterized in that: The filter plate (15) is fixedly connected to the connection block (13) via a first screw (18) and a mounting plate (17).

6. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 2 is characterized in that: A support ring (19) is installed inside the first oil control hole (9) and the second oil control hole (10), a diverter box (22) is arranged inside the first oil control hole (9) and the second oil control hole (10), a filter screen (23) is installed in the inner cavity of the diverter box (22), the top end of the diverter box (22) is integrally connected to a limit ring (20), and the top end of the limit ring (20) is connected to a second screw (21).

7. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 6, characterized in that: The diverter box (22) is in a metal hollow shape, and the filter screen (23) is made of a metal material and is adapted to be assembled in the inner cavity of the diverter box (22).

8. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 1, characterized in that: A limit sensor (24) is installed at the bottom end of the valve body (30) and close to the end of the control piston (1) without a spring chamber. The left and right side walls of the valve body (30) are provided with drainage holes (25). A temperature sensor (27) is installed at the bottom end of the drainage hole (25). A sealing plug (26) is connected to the end of the drainage hole (25).

9. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 1, characterized in that: The side wall of the valve body (30) close to the return spring (5) is connected to an extrusion block (28), and the outer side wall of the extrusion block (28) is connected to a third screw (29).

10. The oil-water non-mixing low control pressure non-leakage hydraulically controlled water valve according to claim 9, characterized in that: The extrusion block (28) is fixedly connected to the valve body (30) via a third screw (29), and the inner side wall of the extrusion block (28) is fitted and fixed to the end of the return spring (5).

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