High-pressure water valve and high-pressure water pump

Abstract

The present invention provides a high-pressure water valve and a high-pressure water pump. The high-pressure water valve is arranged on a high-pressure water pump, and a water-cooling flow channel for cooling a water seal is arranged on the pump body of the high-pressure water pump, comprising: a high-pressure valve body, having a water inlet flow channel and a corresponding water inlet, a water outlet flow channel and a corresponding water outlet and a water outlet joint, and an overflow flow channel and a corresponding overflow; and a cooling water supply part, which is used to reduce the pressure of a part of the high-pressure water in the water inlet flow channel to obtain cooling water and transport it to the water-cooling flow channel, wherein the cooling water supply part includes a cooling water outlet joint and a pressure reducing nozzle, the high-pressure valve body also has a cooling water outlet, and a high-pressure water outlet flow channel that connects the cooling water outlet with the water inlet flow channel, the cooling water outlet joint is installed in the cooling water outlet, and is connected and communicated with the water inlet of the water-cooling flow channel, and the pressure reducing nozzle is installed in the front end of the cooling water outlet joint, which is used to reduce the pressure of the high-pressure water led out through the high-pressure water outlet flow channel to obtain cooling water.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-pressure water pumps, and in particular relates to a high-pressure water valve and a high-pressure water pump comprising the high-pressure water valve. Background Art

[0002] At present, the water seals used in high-pressure water pumps equipped with high-pressure water valves with single pressure regulating or unloading functions on the market all need to be cooled by water. The common practice in the industry is to set up a water cooling channel on the high-pressure water pump and connect the pressurized water to cool the water seal, and other pressurizing equipment needs to be installed to pressurize the water. This will not only increase the cost too much, but also increase the installation space of the entire high-pressure water pump equipment. Summary of the invention

[0003] The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a high-pressure water valve and a high-pressure water pump including the high-pressure water valve.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] <Option 1>

[0006] The present invention provides a high-pressure water valve, which is arranged on a high-pressure water pump. The pump body of the high-pressure water pump is provided with a water-cooling flow channel for cooling a water seal, and has the following characteristics: a high-pressure valve body, having a water inlet flow channel and a corresponding water inlet, a water outlet flow channel and a corresponding water outlet and a water outlet joint, and an overflow flow channel and a corresponding overflow; and a cooling water supply part, which is used to reduce the pressure of a part of the high-pressure water in the water inlet flow channel to obtain cooling water and convey the cooling water to the water-cooling flow channel, wherein the cooling water supply part includes a cooling water outlet joint and a pressure reducing nozzle, the high-pressure valve body also has a cooling water outlet, and a high-pressure water outlet flow channel that connects the cooling water outlet with the water inlet flow channel, the cooling water outlet joint is installed in the cooling water outlet, and is connected and communicated with the water inlet of the water-cooling flow channel through a water supply pipeline, and the pressure reducing nozzle is detachably installed in the front end portion of the cooling water outlet joint, and is used to reduce the pressure of the high-pressure water led out through the high-pressure water outlet flow channel to obtain cooling water.

[0007] The high-pressure water valve provided by the present invention may also have the following features: the cooling water supply part also includes a cooling water return joint, the high-pressure valve body also has a cooling water return port connected to the overflow channel, the cooling water return joint is installed in the cooling water return port, and is connected and communicated with the water outlet of the water-cooling channel through a return water pipe.

[0008] The high-pressure water valve provided by the present invention may also have the following features: it also includes: an easy-start valve for reducing the load of the engine in the high-pressure water pump during the start-up process of the high-pressure water pump, wherein the high-pressure valve body also has an installation groove matching the easy-start valve, a first flow channel connecting the water inlet flow channel with the middle and rear part of the side of the installation groove, and a second flow channel connecting the overflow flow channel with the bottom of the installation groove. The easy-start valve is installed in the installation groove, and can connect the first flow channel and the second flow channel when the high-pressure water pump is in an unstarted state and during the start-up process, and separate the first flow channel and the second flow channel after the high-pressure water pump is started.

[0009] In the high-pressure water valve provided by the present invention, it can also have the following characteristics: wherein, the easy-to-start valve includes a first valve seat, a first valve ball and a first return spring, the first valve seat is arranged in an installation groove, and has a first chamber extending in the length direction of the first valve seat inside, the first chamber is composed of a first front chamber, a first rear chamber, and a first intermediate chamber whose diameter is larger than the diameter of the first front chamber and the first rear chamber, the top of the first front chamber is provided with a first through hole for connecting the first front chamber with the second flow channel, the sides of the first intermediate chamber and the first rear chamber are provided with at least one second through hole for connecting the first intermediate chamber and the first rear chamber with the first flow channel, the first valve ball is movably installed in the first intermediate chamber, and its diameter is larger than the diameter of the first front chamber and the first rear chamber, the first return spring is installed in the first front chamber, and its two ends are respectively abutted against the front wall of the first front chamber and the first valve ball.

[0010] The high-pressure water valve provided by the present invention may also have the following features: it also includes: a low-pressure holding valve installed in the water outlet flow channel, which is used to reduce the pressure of water remaining in the water outlet flow channel when unloading.

[0011] The high-pressure water valve provided by the present invention may also have the following features: wherein, the water outlet channel is composed of the high-pressure valve body water outlet channel and the water outlet joint water outlet channel, the diameter of the high-pressure valve body water outlet channel is larger than the diameter of the water outlet joint water outlet channel, the low-pressure holding valve comprises a cone valve, a second valve seat, a second return spring, a second valve ball and a third return spring, the cone valve is movably installed in the water outlet channel, the rear end face has a second chamber extending in the length direction of the cone valve, the second chamber is composed of a second front chamber, a second middle chamber and a second rear chamber with successively increasing diameters, the top of the second front chamber is provided with a valve for connecting the second front chamber with the inlet A third through hole connected to the water flow channel, at least one fourth through hole is provided on the side of the second intermediate chamber for connecting the second intermediate chamber with the water outlet flow channel of the high-pressure valve body, the second valve seat is fixedly installed at the front of the second intermediate chamber, and is provided with a fifth through hole for connecting the second intermediate chamber and the second front chamber, the second return spring is installed in the water outlet flow channel of the water outlet joint, and the two ends are respectively abutted against the front wall of the water outlet flow channel of the water outlet joint and the rear wall of the second rear chamber, the second valve ball is movably installed in the second front chamber, and the third return spring is installed in the second front chamber, and the two ends are respectively abutted against the top wall of the second front chamber and the second valve ball.

[0012] The high-pressure water valve provided by the present invention may also have the following feature: an annular sealing ring is provided at the front end of the cone valve.

[0013] <Option 2>

[0014] The present invention also provides a high-pressure water pump having the following characteristics: a high-pressure water valve according to <Scheme 1>.

[0015] Function and Effect of the Invention

[0016] According to the high-pressure water valve and the high-pressure water pump including the high-pressure water valve involved in the present invention, because there is a cooling water supply part, the cooling water supply part includes a cooling water outlet joint and a pressure reducing nozzle, the high-pressure valve body has a cooling water outlet, and a high-pressure water outlet flow channel that connects the cooling water outlet with the water inlet flow channel, the cooling water outlet joint is installed in the cooling water outlet, and is connected and communicated with the water inlet of the water-cooling flow channel through a water delivery pipeline, and the pressure reducing nozzle is detachably installed in the front end of the cooling water outlet joint, and can reduce the pressure of the high-pressure water led out through the high-pressure water outlet flow channel to obtain cooling water, so the present invention can lead out a part of the high-pressure water in the water inlet flow channel, reduce the pressure to obtain cooling water and deliver the cooling water to the water-cooling flow channel, thereby providing cooling water to the water-cooling flow channel of the water seal of the high-pressure water pump. Moreover, the cooling water supply part is integrated on the high-pressure valve body, which will neither increase the occupied space of the high-pressure water valve nor increase excessive costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic diagram of the structure of the high-pressure water valve in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0019] <Example>

[0020] Figure 1 Schematic diagram of the structure of the high-pressure water valve in an embodiment of the present invention.

[0021] like Figure 1 As shown, in this embodiment, the high-pressure water valve 100 is arranged on a high-pressure water pump (not shown in the figure), and a water cooling channel for cooling the water seal is provided on the pump body of the high-pressure water pump. The high-pressure water valve 100 includes a high-pressure valve body 10, a cooling water supply part 20, an easy start valve 30 and a low-pressure holding valve 40.

[0022] like Figure 1 As shown, the high pressure valve body 10 has a water inlet channel 11 and a corresponding water inlet 11a, a water outlet channel 12 and a corresponding water outlet 12a and a water outlet joint 12b, and an overflow channel 13 and a corresponding overflow port 13a.

[0023] The high-pressure valve body 10 is provided with a cooling water outlet 14 at a position close to the water inlet 11 a . The cooling water outlet 14 is connected to the water inlet channel 11 through a high-pressure water outlet channel 15 .

[0024] The high-pressure valve body 10 is provided with a cooling water return port 16 communicating with the overflow channel 13 at a position close to the overflow port 13 a.

[0025] The high-pressure valve body 10 is provided with a mounting groove 17 for mounting the easy-start valve 30 at a position between the water inlet 11a and the overflow port 13a; the middle part of the side of the mounting groove 17 is connected to the water inlet channel 11 through the first channel 18, and the bottom is connected to the overflow channel 13 through the second channel 19.

[0026] In this embodiment, the water outlet channel 12 is composed of a high-pressure valve body water outlet channel located in the high-pressure valve body 10 and a water outlet joint water outlet channel located in the water outlet joint 12b, and the diameter of the high-pressure valve body water outlet channel is larger than the diameter of the water outlet joint water outlet channel; the rear end of the water outlet joint 12b forms a water outlet 12a.

[0027] like Figure 1 As shown, the cooling water supply part 20 is used to reduce the pressure of a part of the high-pressure water in the water inlet channel 11 to obtain cooling water and transport the cooling water to the water cooling channel, and includes a cooling water outlet joint 21, a pressure reducing nozzle 22 and a cooling water return joint 23.

[0028] The cooling water outlet joint 21 is installed in the cooling water outlet 14, and its outlet is connected and communicated with the water inlet of the water cooling channel through a water delivery pipeline (not shown in the figure).

[0029] The pressure reducing nozzle 22 is detachably mounted in the front end portion (ie, the water inlet end) of the cooling water outlet joint 21 and is used to reduce the pressure of the high-pressure water drawn out through the high-pressure water outlet channel 15 to obtain cooling water.

[0030] The cooling water return joint 23 is installed in the cooling water return port 16, and its water inlet is connected and communicated with the water outlet of the water cooling channel through a return water pipe (not shown in the figure).

[0031] After high-pressure water enters the water inlet channel 11 through the water inlet 11a, part of the high-pressure water flows through the high-pressure water outlet channel 15 and flows through the pressure reducing nozzle 22. The cooling water of the pressure value required for water cooling of the water seal is formed by the pressure reducing effect of the pressure reducing nozzle 22, and then delivered to the water cooling channel through the water delivery pipeline, thereby realizing the cooling water supply to the water cooling channel. Since the water pressure near the overflow port 13a of the high-pressure valve body 10 is very low, the cooling water after heat exchange flows back to the high-pressure valve body 10 through the return water pipeline to realize circulation.

[0032] like Figure 1 As shown, the easy-start valve 30 is used to reduce the load of the engine in the high-pressure water pump during the start-up process of the high-pressure water pump, and includes a first valve seat 31 , a first valve ball 32 and a first return spring 33 .

[0033] The first valve seat 31 is disposed in the mounting groove 17, and has a first chamber 31a extending in the length direction of the first valve seat 31. The first chamber is composed of a first front chamber, a first rear chamber, and a first intermediate chamber having a diameter greater than that of the first front chamber and the first rear chamber. A first through hole (not shown in the figure) for connecting the first front chamber with the second flow channel 19 is disposed at the top of the first front chamber, and at least one second through hole 31b for connecting the first intermediate chamber and the first rear chamber with the first flow channel 18 is disposed at the side of the first intermediate chamber and the first rear chamber.

[0034] The first valve ball 32 is movably installed in the first intermediate chamber, and its diameter is larger than the diameters of the first front chamber and the first rear chamber.

[0035] The first return spring 33 is installed in the first front chamber, and two ends thereof are respectively in contact with the front wall of the first front chamber and the first valve ball 32 .

[0036] When the high-pressure water pump is in an unstarted state, the first valve ball 32 is away from the first front chamber under the action of the first return spring 33, and the first through hole is connected to the second through hole 31b, so that the water inlet channel 11 is connected to the overflow channel 13. In the process of starting the high-pressure water pump, the air in the water inlet channel 11 can flow into the overflow channel 33 through the first channel 18, the second through hole 31b, the first intermediate chamber, the first front chamber, the first through hole, and the second channel 19 in sequence, and finally discharged into the atmosphere through the overflow port 13a, which can greatly reduce the exhaust resistance of the power of the engine as the power source of the high-pressure water pump, reduce the load of the engine, and achieve the effect of helping the high-pressure water pump to start the power. When the high-pressure water pump is started, the water pressure of the water in the water inlet channel 11 gradually increases, and a part of the high-pressure water enters the first intermediate chamber and the first rear chamber through the first channel 18, pushing the steel ball forward to abut against the rear end wall of the first front chamber to form a seal, so that the first channel 18 and the second channel 19 are separated.

[0037] like Figure 1 As shown, the low-pressure holding valve 40 is used to reduce the pressure of water remaining in the water outlet channel 12 during unloading, and includes a cone valve 41 , a second valve seat 42 , a second return spring 43 , a second valve ball 44 and a third return spring 45 .

[0038] The cone valve 41 is movably installed in the water outlet flow channel 12, and the rear end surface has a second chamber 41a extending in the length direction of the cone valve 41, and the second chamber is composed of a second front chamber, a second middle chamber and a second rear chamber with successively increasing diameters. The top of the second front chamber is provided with a third through hole 41b for connecting the second front chamber with the water inlet flow channel 11, and the side of the second middle chamber is provided with at least one fourth through hole 41c for connecting the second middle chamber with the water outlet flow channel of the high-pressure valve body. In this embodiment, the front end of the cone valve 41 is provided with an annular sealing ring 41d.

[0039] The second valve seat 42 is fixedly mounted at the front of the second intermediate chamber and is provided with a fifth through hole 42a for connecting the second intermediate chamber with the second front chamber.

[0040] The second return spring 43 is installed in the water outlet channel of the water outlet joint, and its two ends are respectively in contact with the front wall of the water outlet channel of the water outlet joint and the rear wall of the second rear chamber.

[0041] The second valve ball 44 is movably installed in the second front chamber.

[0042] The third return spring 45 is installed in the second front chamber, and two ends thereof are respectively in contact with the top wall of the second front chamber and the second valve ball 44 .

[0043] After high-pressure water flows into the water inlet channel 11, the high-pressure water pushes open the cone valve 41 through the inlet of the water outlet channel 12 and flows into the water outlet channel. When the water outlet channel 12 is closed, a water hammer will be formed. Under the action of the water hammer, the cone valve 41 is closed, and the overflow port 13a is opened to overflow. At this time, the water hammer pressure will be maintained between the cone valve 41 and the water outlet channel 12. At the same time, the second valve ball 44 installed inside the cone valve 41 leaves the surface of the second valve seat 42 under the action of pressure, and the cone valve 41 and the low-pressure area of ​​the high-pressure valve body 10 form a channel. The pressure maintained between the cone valve 41 and the water outlet channel 12 is gradually released. When the force of the pressure acting on the second valve ball 44 is less than the force value of the third reset spring 45, the third reset spring 45 pushes the second valve ball 44 to contact the surface of the second valve seat 42 to form a seal, and the channel is closed. At this time, only a very small pressure value will be maintained between the cone valve 41 and the water outlet channel 12. It should be noted that, since the automatic pressure relief function of the high-pressure water valve 40 requires a certain pressure value to be maintained between the cone valve 41 and the water outlet channel 12 in order to maintain a low-pressure state, the pressure cannot be completely released.

[0044] Example Function and Effect

[0045] According to the high-pressure water valve and the high-pressure water pump including the high-pressure water valve involved in this embodiment, because there is a cooling water supply part, the cooling water supply part includes a cooling water outlet joint and a pressure reducing nozzle, the high-pressure valve body has a cooling water outlet, and a high-pressure water outlet flow channel that connects the cooling water outlet with the water inlet flow channel, the cooling water outlet joint is installed in the cooling water outlet, and is connected and communicated with the water inlet of the water-cooling flow channel through a water delivery pipeline, and the pressure reducing nozzle is detachably installed in the front end of the cooling water outlet joint, and can reduce the pressure of the high-pressure water led out through the high-pressure water outlet flow channel to obtain cooling water, so this embodiment can lead out a part of the high-pressure water in the water inlet flow channel, reduce the pressure to obtain cooling water and deliver the cooling water to the water-cooling flow channel, thereby providing cooling water to the water-cooling flow channel of the water seal of the high-pressure water pump. Moreover, the cooling water supply part is integrated on the high-pressure valve body, which will neither increase the occupied space of the high-pressure water valve nor increase excessive costs.

[0046] Furthermore, because the cooling water supply part also includes a cooling water return joint, the high-pressure valve body also has a cooling water return port connected to the overflow channel. The cooling water return joint is installed in the cooling water return port and is connected and communicated with the water outlet of the water-cooling channel through a return pipe, so that the cooling water after heat exchange can flow back to the high-pressure valve body through the return pipe to realize circulation.

[0047] In addition, because it also has an easy-to-start valve, the easy pneumatic valve includes a first valve seat, a first valve ball and a first return spring. The first valve seat is arranged in the mounting groove, and has a first chamber extending in the length direction of the first valve seat. The first chamber is composed of a first front chamber, a first rear chamber, and a first intermediate chamber whose diameter is larger than that of the first front chamber and the first rear chamber. The top of the first front chamber is provided with a first through hole for connecting the first front chamber with the second flow channel, and the sides of the first intermediate chamber and the first rear chamber are provided with a through hole for connecting the first intermediate chamber and the first rear chamber with the first flow channel. at least one second through hole, the first valve ball is movably installed in the first intermediate chamber, and the diameter is larger than the diameter of the first front chamber and the first rear chamber, the first return spring is installed in the first front chamber, and the two ends are respectively abutted against the front wall of the first front chamber and the first valve ball, so that the first flow channel and the second flow channel can be connected when the high-pressure water pump is in an unstarted state and in the start-up process, and the first flow channel and the second flow channel can be isolated after the high-pressure water pump is started, so as to reduce the load of the engine in the high-pressure water pump during the start-up process of the high-pressure water pump on the basis of ensuring the normal operation of the high-pressure water valve.

[0048] In addition, because it also has a low-pressure maintaining valve, the water outlet flow channel is composed of the high-pressure valve body water outlet flow channel and the water outlet joint water outlet flow channel, the diameter of the high-pressure valve body water outlet flow channel is larger than the diameter of the water outlet joint water outlet flow channel, the low-pressure maintaining valve comprises a cone valve, a second valve seat, a second return spring, a second valve ball and a third return spring, the cone valve is movably installed in the water outlet flow channel, and the rear end face has a second chamber extending in the length direction of the cone valve, the second chamber is composed of a second front chamber, a second middle chamber and a second rear chamber with successively increasing diameters, the top of the second front chamber is provided with a third through hole for connecting the second front chamber with the water inlet flow channel, the second middle chamber The side is provided with at least one fourth through hole for connecting the second intermediate chamber with the water outlet channel of the high-pressure valve body, the second valve seat is fixedly installed at the front part of the second intermediate chamber, and is provided with a fifth through hole for connecting the second intermediate chamber with the second front chamber, the second return spring is installed in the water outlet channel of the water outlet joint, and the two ends are respectively abutted against the front wall of the water outlet channel of the water outlet joint and the rear wall of the second rear chamber, the second valve ball is movably installed in the second front chamber, and the third return spring is installed in the second front chamber, and the two ends are respectively abutted against the top wall of the second front chamber and the second valve ball, thereby reducing the pressure of water remaining in the water outlet channel when unloading.

[0049] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A high-pressure water valve, arranged on a high-pressure water pump, wherein a water cooling channel for cooling a water seal is arranged on the pump body of the high-pressure water pump, characterized in that: The high pressure water valve comprises: A high-pressure valve body having a water inlet channel and a corresponding water inlet, a water outlet channel and a corresponding water outlet and a water outlet joint, and an overflow channel and a corresponding overflow port; and A cooling water supply unit is used to reduce the pressure of a portion of the high-pressure water in the water inlet channel to obtain cooling water and deliver the cooling water to the water-cooling channel, The cooling water supply unit includes a cooling water outlet joint and a pressure reducing nozzle. The high-pressure valve body also has a cooling water outlet and a high-pressure water outlet channel that connects the cooling water outlet with the water inlet channel. The cooling water outlet joint is installed in the cooling water outlet and is connected and communicated with the water inlet of the water cooling channel through a water delivery pipeline. The pressure reducing nozzle is detachably mounted in the front end of the cooling water outlet joint, and is used to reduce the pressure of the high-pressure water drawn out through the high-pressure water outlet channel to obtain the cooling water. The cooling water supply unit also includes a cooling water return joint. The high pressure valve body also has a cooling water return port connected to the overflow flow channel. The cooling water return joint is installed in the cooling water return port, and is connected and communicated with the water outlet of the water cooling channel through a return water pipe.

2. The high pressure water valve according to claim 1, characterized in that: Also includes: The easy-start valve is used to reduce the load of the engine in the high-pressure water pump during the start-up process of the high-pressure water pump. The high-pressure valve body further comprises a mounting groove matching the easy-start valve, a first flow channel connecting the water inlet flow channel with the middle and rear part of the side of the mounting groove, and a second flow channel connecting the overflow flow channel with the bottom of the mounting groove. The easy-start valve is installed in the installation groove, and can connect the first flow channel and the second flow channel when the high-pressure water pump is in an unstarted state and during the start-up process, and isolate the first flow channel and the second flow channel after the high-pressure water pump is started.

3. The high pressure water valve according to claim 2, characterized in that: in, The easy-start valve comprises a first valve seat, a first valve ball and a first return spring. The first valve seat is arranged in the mounting groove, and has a first chamber extending in the length direction of the first valve seat. The first chamber is composed of a first front chamber, a first rear chamber, and a first intermediate chamber having a diameter larger than that of the first front chamber and the first rear chamber. A first through hole is provided on the top of the first front chamber for connecting the first front chamber with the second flow channel. At least one second through hole is provided at the side of the first intermediate chamber and the first rear chamber for connecting the first intermediate chamber and the first rear chamber with the first flow channel. The first valve ball is movably installed in the first intermediate chamber, and has a diameter greater than that of the first front chamber and the first rear chamber. The first return spring is installed in the first front chamber, and two ends thereof are respectively in contact with the front wall of the first front chamber and the first valve ball.

4. The high pressure water valve according to claim 1, characterized in that: Also includes: A low-pressure holding valve is installed in the water outlet flow channel and is used to reduce the pressure of water remaining in the water outlet flow channel during unloading.

5. The high pressure water valve according to claim 4, characterized in that: in, The water outlet flow channel is composed of a high-pressure valve body water outlet flow channel and a water outlet joint water outlet flow channel. The diameter of the high-pressure valve body water outlet flow channel is larger than the diameter of the water outlet joint water outlet flow channel. The low-pressure holding valve comprises a cone valve, a second valve seat, a second return spring, a second valve ball and a third return spring. The cone valve is movably installed in the water outlet flow channel, and the rear end surface has a second chamber extending in the length direction of the cone valve, and the second chamber is composed of a second front chamber, a second middle chamber and a second rear chamber with successively increasing diameters. A third through hole is provided on the top of the second front chamber for connecting the second front chamber with the water inlet channel. The side of the second intermediate chamber is provided with at least one fourth through hole for connecting the second intermediate chamber with the water outlet channel of the high-pressure valve body. The second valve seat is fixedly mounted on the front part of the second intermediate chamber and is provided with a fifth through hole for connecting the second intermediate chamber with the second front chamber. The second return spring is installed in the water outlet flow channel of the water outlet joint, and its two ends are respectively in contact with the front wall of the water outlet flow channel of the water outlet joint and the rear wall of the second rear chamber. The second valve ball is movably installed in the second front chamber. The third return spring is installed in the second front chamber, and two ends thereof are respectively in contact with the top wall of the second front chamber and the second valve ball.

6. The high pressure water valve according to claim 5, characterized in that: in, An annular sealing ring is arranged at the front end of the cone valve.

7. A high-pressure water pump, characterized in that: A high-pressure water valve as claimed in any one of claims 1 to 6.

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