An ultrahigh pressure bypass valve

Abstract

The utility model discloses an ultrahigh pressure bypass valve, including valve body, cylinder body, piston, spring, cylinder cover, sealing ring, valve core, valve core sealing ring, guide bushing, valve seat and sealing ring. The detachable fixed of valve body has cylinder body, is equipped with piston and spring in the cylinder body, and cylinder cover is equipped with compressed air inlet. Valve core is equipped in the valve body, and valve core sealing ring is installed on the valve core, and the valve body lower extreme is equipped with guide bushing, valve seat in proper order, and the bottom of valve seat is equipped with sealing ring, and the valve core bottom end passes through guide bushing and is in contact with the inner hole top end of valve seat. The bottom end of valve body is equipped with ultrahigh pressure water inlet, and one side is equipped with low pressure water outlet. The utility model discloses through low pressure compressed air control ultrahigh pressure water's unloading, and valve core sealing only bears low pressure water, avoids ultrahigh pressure sealing leakage risk, and valve seat, sealing ring and valve core adopt mechanical type sealing, and the simple structure is reliable, is applicable to ultrahigh pressure fluid system.

Description

Technical Field

[0001] This utility model relates to the field of fluid control equipment technology, and in particular to an ultra-high pressure bypass valve, specifically a bypass valve for ultra-high pressure systems, and more particularly to a bypass valve that controls the unloading of ultra-high pressure water by using low-pressure compressed air. Background Technology

[0002] In ultra-high pressure fluid systems, bypass valves are used to release ultra-high pressure fluid to a low-pressure area when the system pressure exceeds a set value, thereby protecting the safety of system equipment. Existing ultra-high pressure bypass valves typically employ direct mechanical or hydraulic control methods, which suffer from problems such as complex structure, poor sealing reliability, and susceptibility to leakage.

[0003] For example, some ultra-high pressure valves use ultra-high pressure sealing rings, but under long-term high pressure, these rings are prone to aging, deformation, or damage, increasing the risk of leakage. Furthermore, the manufacturing and installation of ultra-high pressure sealing rings have high requirements and are costly. Other valves employ complex hydraulic control systems that drive the valve core through high-pressure fluid; however, this system requires an additional hydraulic power source, increasing system complexity and maintenance difficulty.

[0004] Furthermore, the sealing between the valve core and seat of existing ultra-high pressure valves largely relies on elastic sealing rings. Under ultra-high pressure environments, these sealing rings are subjected to high stress, making them prone to plastic deformation or fatigue failure, leading to seal failure. Simultaneously, the impact and vibration of ultra-high pressure fluids can also easily cause wear on the valve core and seat, further affecting sealing performance.

[0005] Therefore, there is an urgent need in this field for a bypass valve that is simple in structure, has reliable sealing, is easy to control, and can effectively avoid the risk of ultra-high pressure leakage. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an ultra-high pressure bypass valve, which is a simple structure, reliable sealing, and ultra-high pressure bypass valve that controls the unloading of ultra-high pressure water through low-pressure compressed air.

[0007] The above-mentioned utility model objective is achieved through the following technical solution:

[0008] This utility model provides an ultra-high pressure bypass valve, including a valve body, a cylinder body detachably fixed to the valve body, a piston disposed in the cylinder body, a spring sleeved on the outer side of one end of the piston, a cylinder head mounted on the top of the cylinder body, a first sealing groove formed on the top surface of the cylinder body in contact with the cylinder head, a first sealing ring disposed in the first sealing groove, a second sealing groove formed on the outer wall of the upper end of the piston in contact with the inner wall of the cylinder body, a second sealing ring disposed in the second sealing groove, a compressed air inlet formed on the cylinder head, a valve core disposed in the valve body, a plurality of valve core sealing rings in contact with the inner wall of the valve body mounted on the outer side of one end of the valve core, a guide sleeve and a valve seat disposed sequentially from top to bottom inside the lower end of the valve body, a sealing ring disposed at the bottom of the valve seat, the bottom end of the valve core passing through the guide sleeve and abutting against the top of the inner hole of the valve seat, an ultra-high pressure water inlet formed at the bottom end of the valve body, and a low pressure water outlet formed on one side of the valve body.

[0009] According to one embodiment of the present invention, the cylinder body and the valve body are threadedly connected, and a sealing gasket is provided at the connection.

[0010] According to one embodiment of the present invention, the piston is made of copper alloy or chrome-plated steel, and the piston is fitted with the inner wall of the cylinder with a clearance of 0.1-0.5 mm.

[0011] According to one embodiment of the present invention, the spring is a compression spring made of spring steel, with a wire diameter of 2-10mm, an outer diameter of 30-100mm, and a free length of 50-200mm.

[0012] According to one embodiment of the present invention, both the first sealing ring and the second sealing ring are O-rings, made of nitrile rubber or fluororubber, with a hardness of 70-90 Shore A.

[0013] According to one embodiment of the present invention, the number of valve core sealing rings is 2-4, and the material of the valve core sealing rings is polytetrafluoroethylene or polyurethane.

[0014] According to one embodiment of the present invention, the guide sleeve is made of a self-lubricating material, such as copper-based powder metallurgy or engineering plastic, and the inner diameter of the guide sleeve matches the diameter of the valve core with a gap of 0.05-0.2mm.

[0015] According to one embodiment of the present invention, the valve seat is made of hard alloy, and the inner hole of the valve seat is conical or planar with a cone angle of 30-60 degrees.

[0016] According to one embodiment of the present invention, the sealing ring is made of an elastic material, such as rubber or polyurethane, and the sealing ring is connected to the bottom end of the valve core by a thread.

[0017] According to one embodiment of the present invention, the diameter of the ultra-high pressure water inlet is 10-50mm, the diameter of the low pressure water outlet is 20-80mm, and the diameter of the compressed air inlet is 5-20mm.

[0018] In summary, compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0019] This utility model discloses an ultra-high pressure bypass valve with a simple structure. It controls the unloading of ultra-high pressure water using low-pressure compressed air, reducing the complexity and cost of the control system. The valve core sealing ring only bears the low-pressure water, avoiding the leakage risk of ultra-high pressure seals and improving sealing reliability and service life. The valve seat, sealing ring, and valve core adopt mechanical sealing, avoiding the risk of leakage of the ultra-high pressure sealing ring on the valve seat and enhancing the durability and safety of the valve. The cylinder body and valve body are detachably connected, facilitating maintenance and component replacement, and reducing maintenance costs.

[0020] The guide sleeve design of this invention ensures the stability of the valve core's movement, reducing wear and vibration. A spring provides a restoring force, ensuring the valve remains closed when there is no compressed air, thus improving system safety. Multiple sealing rings ensure the sealing of all connections, further preventing leakage. The rational layout of the ultra-high pressure inlet and low-pressure outlet optimizes the fluid flow path and reduces pressure loss. The connection between the valve core and the sealing ring is simple, reliable, and easy to process and assemble. The overall structure is compact, making it suitable for installation in space-constrained ultra-high pressure systems.

[0021] This utility model's ultra-high pressure bypass valve uses low-pressure compressed air to drive a piston, thereby controlling the movement of the valve core and achieving unloading of ultra-high pressure water. The valve core sealing ring only withstands low-pressure water, avoiding the risk of leakage from the ultra-high pressure seal. The valve seat, sealing ring, and valve core employ mechanical sealing, further avoiding the risk of leakage from the ultra-high pressure sealing ring on the valve seat. Attached Figure Description

[0022] Figure 1 This is the front view of the present invention.

[0023] Figure 2 for Figure 1 A cross-sectional view along the EE position.

[0024] Reference numerals in the attached diagram: 1. Cylinder head; 2. First sealing ring; 3. Second sealing ring; 4. Cylinder body; 5. Valve body; 6. Sealing ring; 7. Valve seat; 8. Guide sleeve; 9. Valve core; 10. Valve core sealing ring; 11. Piston; 12. Spring; P. Ultra-high pressure water inlet; Z. Compressed air inlet; T. Low pressure drain port. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] This utility model discloses an ultra-high pressure bypass valve, including a valve body 5, a cylinder body 4 detachably fixed to the valve body 5, a piston 11 disposed inside the cylinder body 4, a spring 12 sleeved on the outer side of one end of the piston 11, a cylinder head 1 mounted on the top of the cylinder body 4, a first sealing groove formed on the top surface of the cylinder body 4 in contact with the cylinder head 1, a first sealing ring 2 disposed in the first sealing groove, and a second sealing groove formed on the outer wall of the upper end of the piston 11 in contact with the inner wall of the cylinder body 4, a second sealing groove disposed in the second sealing groove. There is a second sealing ring 3, and a compressed air inlet Z is provided on the cylinder head 1. A valve core 9 is installed inside the valve body 5. Multiple valve core 9 sealing rings that contact the inner wall of the valve body 5 are installed on the outer side of one end of the valve core 9. A guide sleeve 8 and a valve seat 7 are arranged sequentially from top to bottom inside the lower end of the valve body 5. A sealing ring 6 is provided at the bottom of the valve seat. The bottom end of the valve core 9 passes through the guide sleeve 8 and abuts against the top of the inner hole of the valve seat 7. An ultra-high pressure water inlet P is provided at the bottom end of the valve body 5, and a low pressure water outlet T is provided on one side of the valve body 5.

[0029] The cylinder body 4 is threadedly connected to the valve body 5, and a sealing gasket is provided at the connection. The piston 11 is made of copper alloy or chrome-plated steel, and the piston 11 is clearance-fitted with the inner wall of the cylinder body 4, with a clearance of 0.1-0.5mm. The spring 12 is a compression spring made of spring steel, with a wire diameter of 2-10mm, an outer diameter of 30-100mm, and a free length of 50-200mm.

[0030] Both the first sealing ring 2 and the second sealing ring 3 are O-rings, made of nitrile rubber or fluororubber, with a hardness of 70-90 Shore A. The valve core 9 has 2-4 sealing rings, made of polytetrafluoroethylene or polyurethane. The guide sleeve 8 is made of a self-lubricating material, such as copper-based powder metallurgy or engineering plastic. The inner diameter of the guide sleeve 8 matches the diameter of the valve core 9, with a gap of 0.05-0.2 mm.

[0031] The valve seat 7 is made of hard alloy, and its inner bore is tapered or flat with a cone angle of 30-60 degrees. The sealing ring 6 is made of an elastic material, such as rubber or polyurethane, and is threaded to the bottom of the valve core 9. The diameter of the ultra-high pressure inlet P is 10-50mm, the diameter of the low pressure drain T is 20-80mm, and the diameter of the compressed air inlet Z is 5-20mm.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Example 1

[0034] like Figure 1 and Figure 2 As shown, the ultra-high pressure bypass valve of this utility model includes a valve body 5, which is made of high-strength stainless steel, such as 304 stainless steel or 316 stainless steel, to withstand ultra-high pressure environments. The wall thickness of the valve body 5 is 10-50mm, preferably 20-30mm, to ensure sufficient strength and pressure resistance. The valve body 5 is cylindrical or rectangular in shape; in this embodiment, it is cylindrical, with a diameter of 100-300mm and a height of 200-500mm.

[0035] A cylinder body 4 is detachably fixed to the valve body 5 via threads. The cylinder body 4, also made of high-strength stainless steel, connects to the valve body 5, and a sealing gasket is installed at the connection point to ensure a tight seal. The inner diameter of the cylinder body 4 is 50-150mm, and its height is 100-300mm. A piston 11 is housed within the cylinder body 4. The piston 11 is made of wear-resistant materials such as copper alloy or chrome-plated steel. The diameter of the piston 11 is 50-150mm, and it is clearance-fitted with the inner wall of the cylinder body 4, with a clearance of 0.1-0.5mm to ensure smooth movement of the piston 11.

[0036] A spring 12 is fitted onto the outer side of one end of the piston 11. The spring 12 is a compression spring made of spring steel, such as 60Si2Mn or 50CrVA. The wire diameter of the spring 12 is 2-10mm, the outer diameter is 30-100mm, and the free length is 50-200mm. One end of the spring 12 contacts the bottom of the piston 11, and the other end contacts the inner wall of the cylinder body 4, providing an upward restoring force so that the piston 11 is in the upper limit position without external force.

[0037] A cylinder head 1 is mounted on the top of the cylinder block 4. The cylinder head 1 is made of the same material as the cylinder block 4 and is fixed to the cylinder block 4 with bolts. A first sealing groove is formed on the top surface of the cylinder block 4 where it contacts the cylinder head 1. The depth of the first sealing groove is 2-5 mm and the width is 3-8 mm. A first sealing ring 2 is provided in the first sealing groove. The first sealing ring 2 is an O-ring made of nitrile rubber (NBR) or fluororubber (FKM) with a hardness of 70-90 Shore A to ensure good sealing performance.

[0038] A second sealing groove is provided on the outer wall of the piston 11, which is in contact with the inner wall of the cylinder body 4. The depth of the second sealing groove is 2-5mm and the width is 3-8mm. A second sealing ring 3 is provided in the second sealing groove. The second sealing ring 3 is also an O-ring, and the material is the same as that of the first sealing ring 2. It is used to prevent compressed air leakage.

[0039] The cylinder head 1 has a compressed air inlet Z. The diameter of the compressed air inlet Z is 5-20mm, preferably 10mm, and it is connected to an external compressed air source with a working pressure of 0.5-1.0MPa. When compressed air enters the cylinder body 4 through the inlet Z, it pushes the piston 11 downward and compresses the spring 12.

[0040] A valve core 9 is installed inside the valve body 5. The valve core 9 is made of a hard material such as tungsten carbide or ceramic-coated steel to resist the erosion and wear of ultra-high pressure water. The valve core 9 has a diameter of 20-80 mm and a length of 100-300 mm. Multiple valve core sealing rings 10 are installed on the outer side of one end of the valve core 9. The valve core sealing rings 10 are made of polytetrafluoroethylene (PTFE) or polyurethane (PU), and there are 2-4 rings, preferably 2. The valve core sealing rings 10 contact the inner wall of the valve body 5 to ensure a tight seal between the valve core 9 and the valve body 5. Because the valve core sealing rings 10 only withstand low-pressure water, with an operating pressure below 1.0 MPa, the seal is reliable and has a long service life.

[0041] Inside the lower end of the valve body 5, from top to bottom, are arranged a guide sleeve 8 and a valve seat 7, with a sealing ring 6 at the bottom of the valve seat 7. The guide sleeve 8 is made of a self-lubricating material such as copper-based powder metallurgy or engineering plastic such as POM, and its inner diameter matches the diameter of the valve core 9 with a gap of 0.05-0.2mm to ensure the guidance and stability of the valve core 9 during movement. The valve seat 7 is made of a hard alloy such as tungsten carbide and is connected to the valve body 5 by threads or an interference fit. The inner hole of the valve seat 7 is conical or flat; in this embodiment, it is conical with a cone angle of 30-60 degrees to ensure a sealing fit with the valve core 9. The sealing ring 6 is made of an elastic material such as rubber or polyurethane and is connected to the bottom end of the valve core 9 by threads or a snap-fit, forming a mechanical seal with the valve seat 7 when the valve is closed.

[0042] The bottom end of the valve core 9 passes through the guide sleeve 8 and abuts against the top of the inner hole of the valve seat 7. When the valve core 9 moves downward, the sealing ring 6 separates from the valve seat 7, and ultra-high pressure water enters from the ultra-high pressure inlet P, flows out through the gap between the valve seat 7 and the sealing ring 6, and exits from the low pressure outlet T. When the valve core 9 moves upward, the sealing ring 6 contacts the valve seat 7, forming a seal, and the ultra-high pressure water is blocked.

[0043] The bottom of the valve body 5 is provided with an ultra-high pressure inlet P, the diameter of which is 10-50mm, preferably 25mm, and the working pressure is 100-400MPa, suitable for ultra-high pressure water jet systems. A low-pressure drain port T is provided on one side of the valve body 5, the diameter of which is 20-80mm, preferably 40mm, and the working pressure is below 1.0MPa, connected to a low-pressure drainage system.

[0044] Working process: Under normal conditions, the elastic force of spring 12 keeps piston 11 in the upper limit position, and valve core 9 moves upward under the action of spring 12. Sealing ring 6 and valve seat 7 are in close contact to form a mechanical seal, and the passage between ultra-high pressure water inlet P and low pressure water outlet T is closed, so ultra-high pressure water cannot be discharged.

[0045] When the system pressure exceeds the set value, the external control unit introduces compressed air into the compressed air inlet Z. The compressed air enters the cylinder body 4, pushing the piston 11 downward and compressing the spring 12. The piston 11 pushes the valve core 9 downward through the connecting piece, separating the sealing ring 6 from the valve seat 7. Ultra-high pressure water enters from the ultra-high pressure inlet P, flows out through the gap between the valve seat 7 and the sealing ring 6, and exits from the low pressure drain port T, thus achieving unloading.

[0046] When the system pressure returns to normal, the compressed air supply stops, and the spring force of spring 12 resets piston 11 and valve core 9, causing sealing ring 6 to re-engage with valve seat 7 and closing the passage.

[0047] Example 2

[0048] In another embodiment, the valve body 5 and cylinder body 4 are integrated to reduce connection points and potential leakage risks. The cylinder body 4 and valve body 5 are integrally formed by casting or welding, and the material is high-strength alloy steel, such as 42CrMo. The piston 11 is coated with a wear-resistant coating, such as tungsten carbide coating, to extend its service life. The spring 12 employs a dual-spring design to provide a more stable return force. The valve core seal 10 uses a combined seal, including an O-ring and a retaining ring, to improve sealing performance. The guide sleeve 8 is made of ceramic material to reduce friction and wear. The sealing surfaces of the valve seat 7 and the sealing ring 6 are spherical to improve sealing effectiveness.

[0049] Example 3

[0050] In another embodiment, the ultra-high pressure bypass valve also includes a pressure sensor and an electronic control unit. The pressure sensor is installed at the ultra-high pressure inlet P to monitor the system pressure in real time. The electronic control unit controls the opening and closing of the compressed air inlet Z based on the signal from the pressure sensor, achieving automatic unloading. Furthermore, the valve body 5 is provided with additional test interfaces for connecting pressure gauges or leak detection equipment.

[0051] Material Selection: Valve body 5, cylinder body 4, cylinder head 1: high-strength stainless steel, alloy steel, or titanium alloy. Piston 11: copper alloy, aluminum alloy, or surface-treated steel. Spring 12: spring steel, stainless steel wire, or nickel-based alloy. Sealing ring: nitrile rubber, fluororubber, silicone rubber, or polytetrafluoroethylene. Valve core 9: tungsten steel, ceramic, or surface-hardened steel. Guide sleeve 8: copper-based powder metallurgy, POM, or ceramic. Valve seat 7: tungsten carbide, zirconium oxide, or hard alloy. Sealing ring 6: polyurethane, rubber, or engineering plastic.

[0052] Size range: Valve body 5 outer diameter: 100-300mm; Valve body 5 height: 200-500mm; Cylinder body 4 inner diameter: 50-150mm; Piston 11 diameter: 50-150mm; Spring 12 wire diameter: 2-10mm; Ultra-high pressure water inlet P diameter: 10-50mm; Low pressure water outlet T diameter: 20-80mm; Compressed air inlet Z diameter: 5-20mm

[0053] Performance parameters: Ultra-high pressure working pressure: 100-400MPa; Low pressure working pressure: 0.5-1.0MPa; Working temperature: -20°C to 150°C; Sealing life: greater than 100,000 cycles; Response time: less than 0.1 seconds.

[0054] Through the above design, the ultra-high pressure bypass valve of this utility model has the advantages of simple structure, reliable sealing, convenient control and long service life, and is suitable for ultra-high pressure water jet, hydraulic system, petrochemical and other fields.

[0055] The ultra-high pressure bypass valve of this invention has a reasonable structure and mature manufacturing process, and can be realized through conventional machining, casting, and assembly processes. The component materials are readily available, and the cost is controllable, making it suitable for large-scale production. The valve has been experimentally verified to operate stably under ultra-high pressure environments, exhibiting excellent sealing performance and fully meeting the requirements of industrial applications.

[0056] The implementation principle of this utility model is as follows: This utility model discloses an ultra-high pressure bypass valve, including a valve body 5, a cylinder body 4, a piston 11, a spring 12, a cylinder head 1, a sealing ring, a valve core 9, a valve core 9 sealing ring, a guide sleeve 8, a valve seat 7, and a sealing ring 6. The cylinder body 4 is detachably fixed to the valve body 5. The piston 11 and spring 12 are housed inside the cylinder body 4. The cylinder head 1 has a compressed air inlet Z. The valve core 9 is housed inside the valve body 5. A valve core 9 sealing ring is mounted on the valve core 9. From top to bottom, the guide sleeve 8 and the valve seat 7 are arranged sequentially inside the lower end of the valve body 5. A sealing ring 6 is located at the bottom of the valve seat. The bottom end of the valve core 9 passes through the guide sleeve 8 and abuts against the top of the inner hole of the valve seat 7. An ultra-high pressure inlet P is located at the bottom of the valve body 5, and a low-pressure outlet T is located on one side. This invention controls the unloading of ultra-high pressure water by using low-pressure compressed air. The valve core 9 seal only bears the low-pressure water, avoiding the risk of leakage of ultra-high pressure seal. The valve seat 7, sealing ring 6 and valve core 9 adopt mechanical seal, which is simple and reliable in structure and suitable for ultra-high pressure fluid systems.

[0057] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An ultra-high pressure bypass valve, comprising a valve body (5), characterized in that: A cylinder body (4) is detachably fixed to the valve body (5). A piston (11) is installed inside the cylinder body (4). A spring (12) is sleeved on the outer side of one end of the piston (11). A cylinder head (1) is installed on the top of the cylinder body (4). A first sealing groove is opened on the top surface of the cylinder body (4) that contacts the cylinder head (1). A first sealing ring (2) is installed in the first sealing groove. A second sealing groove is opened on the outer wall of the piston (11) that contacts the inner wall of the cylinder body (4). A second sealing ring (3) is installed in the second sealing groove. 1) A compressed air inlet (Z) is provided on the top. A valve core (9) is installed inside the valve body (5). Multiple valve core sealing rings (10) that contact the inner wall of the valve body (5) are installed on the outer side of one end of the valve core (9). A guide sleeve (8) and a valve seat (7) are arranged in sequence from top to bottom inside the lower end of the valve body (5). A sealing ring (6) is provided at the bottom of the valve seat. The bottom end of the valve core (9) passes through the guide sleeve (8) and abuts against the top of the inner hole of the valve seat (7). An ultra-high pressure water inlet (P) is provided at the bottom end of the valve body (5). A low pressure water outlet (T) is provided on one side of the valve body (5).

2. The ultra-high pressure bypass valve according to claim 1, characterized in that: The cylinder body (4) is threadedly connected to the valve body (5), and a sealing gasket is provided at the connection.

3. The ultra-high pressure bypass valve according to claim 1, characterized in that: The piston (11) is made of copper alloy or steel with chrome plating. The piston (11) is fitted with the inner wall of the cylinder body (4) with a clearance of 0.1-0.5 mm.

4. The ultra-high pressure bypass valve according to claim 1, characterized in that: The spring (12) is a compression spring made of spring steel. The wire diameter of the spring (12) is 2-10mm, the outer diameter is 30-100mm, and the free length is 50-200mm.

5. The ultra-high pressure bypass valve according to claim 1, characterized in that: The first sealing ring (2) and the second sealing ring (3) are both O-rings, made of nitrile rubber or fluororubber, with a hardness of 70-90 Shore A.

6. The ultra-high pressure bypass valve according to claim 1, characterized in that: The number of valve core sealing rings (10) is 2-4, and the material of the valve core sealing rings (10) is polytetrafluoroethylene or polyurethane.

7. The ultra-high pressure bypass valve according to claim 1, characterized in that: The guide sleeve (8) is made of a self-lubricating material, such as copper-based powder metallurgy or engineering plastic. The inner diameter of the guide sleeve (8) matches the diameter of the valve core (9), with a gap of 0.05-0.2mm.

8. The ultra-high pressure bypass valve according to claim 1, characterized in that: The valve seat (7) is made of hard alloy, and the inner hole of the valve seat (7) is conical or planar with a cone angle of 30-60 degrees.

9. The ultra-high pressure bypass valve according to claim 1, characterized in that: The sealing ring (6) is made of an elastic material, such as rubber or polyurethane, and the sealing ring (6) is connected to the bottom end of the valve core (9) by a thread.

10. The ultra-high pressure bypass valve according to claim 1, characterized in that: The diameter of the ultra-high pressure water inlet (P) is 10-50mm, the diameter of the low pressure water outlet (T) is 20-80mm, and the diameter of the compressed air inlet (Z) is 5-20mm.

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