CN116181639A - High-pressure water valve and high-pressure water pump - Google Patents

Abstract

The invention provides a high-pressure water valve and a high-pressure water pump. This high-pressure water valve is set up on high-pressure water pump, is equipped with the water cooling runner that carries out refrigerated to the water seal on the pump body of high-pressure water pump, includes: the high-pressure valve body is provided with a water inlet flow channel, a water outlet connector, an overflow flow channel and an overflow port; and a cooling water supply part for reducing the pressure of a part of the high-pressure water in the water inlet flow passage to obtain cooling water and conveying the cooling water to the water cooling flow passage, wherein the cooling water supply part comprises a cooling water outlet joint and a pressure reducing nozzle, the high-pressure valve body is also provided with a cooling water outlet and a high-pressure water outlet flow passage which enables the cooling water outlet to be communicated with the water inlet flow passage, the cooling water outlet joint is arranged in the cooling water outlet and is connected and communicated with the water inlet of the water cooling flow passage, and the pressure reducing nozzle is arranged in the front end part of the cooling water outlet joint and is used for reducing the pressure of the high-pressure water led out by the high-pressure water outlet flow passage to obtain cooling water.

Description

High-pressure water valve and high-pressure water pump

Technical Field

The invention belongs to the technical field of high-pressure water pumps, and particularly relates to a high-pressure water valve and a high-pressure water pump comprising the same.

Background

At present, water seals used by high-pressure water pumps with single pressure regulating or unloading functions are all water-cooled, and the common practice in the industry is to arrange a water-cooled runner on the high-pressure water pump and turn on pressurized water to perform water seal cooling, and other pressurizing equipment is required to be installed to pressurize the water. This not only increases excessive costs but also increases the installation space of the entire apparatus of the high-pressure water pump.

Disclosure of Invention

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a high-pressure water valve and a high-pressure water pump including the same.

In order to achieve the above purpose, the invention adopts the following technical scheme:

< protocol one >

The invention provides a high-pressure water valve, which is arranged on a high-pressure water pump, a water cooling flow passage for cooling a water seal is arranged on a pump body of the high-pressure water pump, and the high-pressure water valve has the characteristics that: the high-pressure valve body is provided with a water inlet flow channel, a water outlet connector, an overflow flow channel and an overflow port; and a cooling water supply part for depressurizing a part of the high-pressure water in the water inlet flow passage to obtain cooling water and delivering the cooling water to the water cooling flow passage, wherein the cooling water supply part comprises a cooling water outlet joint and a depressurization nozzle, the high-pressure valve body is also provided with a cooling water outlet and a high-pressure water outlet flow passage which enables the cooling water outlet to be communicated with the water inlet flow passage, the cooling water outlet joint is arranged in the cooling water outlet and is connected and communicated with a water inlet of the water cooling flow passage through a water delivery pipeline, and the depressurization nozzle is detachably arranged in the front end part of the cooling water outlet joint and is used for depressurizing the high-pressure water led out through the high-pressure water outlet flow passage to obtain cooling water.

In the high-pressure water valve provided by the invention, the high-pressure water valve can also have the following characteristics: the high-pressure valve body is further provided with a cooling water reflux port communicated with the overflow flow channel, and the cooling water reflux connector is arranged in the cooling water reflux port and is connected and communicated with a water outlet of the water cooling flow channel through a water return pipeline.

In the high-pressure water valve provided by the invention, the high-pressure water valve can also have the following characteristics: further comprises: the easy-start valve is used for reducing the load of an engine in the high-pressure water pump in the starting process of the high-pressure water pump, wherein the high-pressure valve body is further provided with a mounting groove matched with the easy-start valve, a first flow passage for enabling the water inlet flow passage to be communicated with the middle rear part of the side part of the mounting groove, and a second flow passage for enabling the overflow flow passage to be communicated with the bottom of the mounting groove, the easy-start valve is arranged in the mounting groove, the first flow passage and the second flow passage can be communicated in the non-starting state of the high-pressure water pump and in the starting process, and the first flow passage and the second flow passage are separated after the high-pressure water pump is started.

In the high-pressure water valve provided by the invention, the high-pressure water valve can also have the following characteristics: the valve is characterized in that the valve easy to start comprises a first valve seat, a first valve ball and a first reset spring, the first valve seat is arranged in the mounting groove, a first chamber extending in the length direction of the first valve seat is arranged in the first valve seat, the first chamber is composed of a first front chamber, a first rear chamber and a first middle chamber with the diameter larger than that of the first front chamber and the first rear chamber, a first through hole used for enabling the first front chamber to be communicated with a second flow channel is formed in the top of the first front chamber, at least one second through hole used for enabling the first middle chamber and the first rear chamber to be communicated with the first flow channel is formed in the side portions of the first middle chamber and the first rear chamber, the first valve ball is movably mounted in the first middle chamber, the diameter of the first valve ball is larger than that of the first front chamber and the first rear chamber, and the first reset spring is mounted in the first front chamber, and two end portions of the first reset spring are respectively abutted against the front wall of the first front chamber and the first valve ball.

In the high-pressure water valve provided by the invention, the high-pressure water valve can also have the following characteristics: further comprises: and a low pressure maintaining valve installed in the water outlet flow passage for reducing the pressure of water remaining in the water outlet flow passage during unloading.

In the high-pressure water valve provided by the invention, the high-pressure water valve can also have the following characteristics: the low-pressure holding valve comprises a cone valve, a second valve seat, a second reset spring, a second valve ball and a third reset spring, wherein the cone valve is movably arranged in the water outlet flow passage, the rear end face is provided with a second cavity extending in the length direction of the cone valve, the second cavity is composed of a second front cavity, a second middle cavity and a second rear cavity, the diameters of the second front cavity are sequentially increased, the top of the second front cavity is provided with a third through hole for enabling the second front cavity to be communicated with the water outlet flow passage, the side part of the second middle cavity is provided with at least one fourth through hole for enabling the second middle cavity to be communicated with the water outlet flow passage of the high-pressure valve body, the second valve seat is fixedly arranged at the front part of the second middle cavity, the second reset spring is arranged in the water outlet flow passage of the water outlet connector, the two ends of the second reset spring are respectively abutted against the front wall of the water outlet flow passage, the second middle cavity is respectively abutted against the rear wall of the second ball, and the second ball is respectively arranged in the front end of the second middle cavity.

In the high-pressure water valve provided by the invention, the high-pressure water valve can also have the following characteristics: wherein, the front end of the cone valve is provided with an annular sealing ring.

< protocol two >

The invention also provides a high-pressure water pump, which has the characteristics of a high-pressure water valve with the scheme I.

The actions and effects of the invention

According to the high-pressure water valve and the high-pressure water pump including the high-pressure water valve of the present invention, the high-pressure water valve includes the cooling water supply portion including the cooling water extraction joint and the depressurization nozzle, the high-pressure valve body includes the cooling water extraction port, and the high-pressure water extraction flow path connecting the cooling water extraction port with the water inlet flow path, the cooling water extraction joint is installed in the cooling water extraction port and connected with and communicated with the water inlet of the water cooling flow path through the water pipe, and the depressurization nozzle is detachably installed in the front end portion of the cooling water extraction joint, and the high-pressure water extracted through the high-pressure water extraction flow path can be depressurized to obtain the cooling water, so that the cooling water can be extracted and depressurized from a part of the high-pressure water in the water inlet flow path, and then the cooling water can be supplied to the water cooling flow path of the water seal of the high-pressure water pump. Moreover, the cooling water supply part is integrated on the high-pressure valve body, so that the occupied space of the high-pressure water valve is not increased, and excessive cost is not additionally increased.

Drawings

Fig. 1 is a schematic view of a high pressure water valve in an embodiment of the invention.

Detailed Description

The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.

< example >

Fig. 1 is a schematic view of a high pressure water valve in an embodiment of the invention.

As shown in fig. 1, in the present embodiment, the high-pressure water valve 100 is provided on a high-pressure water pump (not shown) having a water cooling flow passage for cooling a water seal provided on a pump body. The high-pressure water valve 100 includes a high-pressure valve body 10, a cooling water supply unit 20, an easy-to-start valve 30, and a low-pressure holding valve 40.

As shown in fig. 1, the high-pressure valve body 10 has a water inlet 11 and a corresponding water inlet 11a, a water outlet 12 and a corresponding water outlet 12a and a water outlet joint 12b, and an overflow 13 and a corresponding overflow 13a.

The high-pressure valve body 10 is provided with a cooling water outlet 14 at a position near the water inlet 11a, and the cooling water outlet 14 communicates with the water inlet flow passage 11 through a high-pressure water outlet flow passage 15.

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

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 13 a; the middle part of the side part of the installation groove 17 is communicated with the water inlet flow channel 11 through a first flow channel 18, and the bottom part is communicated with the overflow flow channel 13 through a second flow channel 19.

In the present embodiment, the water outlet flow passage 12 is composed of a high-pressure valve body water outlet flow passage located in the high-pressure valve body 10 and a water outlet connector water outlet flow passage located in the water outlet connector 12b, and the diameter of the high-pressure valve body water outlet flow passage is larger than that of the water outlet connector water outlet flow passage; the rear end of the water outlet fitting 12b forms a water outlet 12a.

As shown in fig. 1, the cooling water supply unit 20 is configured to depressurize a part of the high-pressure water in the water inlet passage 11 to obtain cooling water and to send the cooling water to the water cooling passage, and includes a cooling water outlet joint 21, a depressurization nozzle 22, and a cooling water return joint 23.

A cooling water outlet fitting 21 is installed in the cooling water outlet port 14, and its water outlet port is connected and communicated with the water inlet port of the water cooling flow passage through a water pipe (not shown in the figure).

The pressure reducing nozzle 22 is detachably installed in the front end portion (i.e., water inlet end portion) of the cooling water outlet joint 21 for reducing the pressure of the high-pressure water led out through the high-pressure water outlet flow passage 15 to obtain cooling water.

A cooling water return joint 23 is installed in the cooling water return port 16, and its water inlet port is connected and communicated with the water outlet port of the water cooling flow passage through a return water pipe (not shown in the figure).

When the high-pressure water enters the water inlet flow channel 11 through the water inlet 11a, a part of the high-pressure water flows through the pressure reducing nozzle 22 through the high-pressure water outlet flow channel 15, the pressure reducing function of the pressure reducing nozzle 22 is carried out to form cooling water with a pressure value required by water cooling of a water seal, and the cooling water is conveyed to the water cooling flow channel through the water conveying pipeline, so that the cooling water supply to the water cooling flow channel is realized. Because 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 into the high-pressure valve body 10 again through the water return pipeline, so that circulation is realized.

As shown in fig. 1, the easy-start valve 30 is used for reducing the load of an engine in a high-pressure water pump during the start of the high-pressure water pump, and includes a first valve seat 31, a first valve ball 32, and a first return spring 33.

The first valve seat 31 is provided in the mounting groove 17, and has a first chamber 31a extending in the longitudinal direction of the first valve seat 31, the first chamber being constituted by a first front chamber, a first rear chamber, and a first intermediate chamber having a diameter larger than those of the first front chamber and the first rear chamber. The top of the first front chamber is provided with a first through hole (not shown) for communicating the first front chamber with the second flow channel 19, and the sides of the first intermediate chamber and the first rear chamber are provided with at least one second through hole 31b for communicating the first intermediate chamber and the first rear chamber with the first flow channel 18.

The first valve ball 32 is movably mounted in the first intermediate chamber and has a diameter greater than the diameters of the first front chamber and the first rear chamber.

The first return spring 33 is installed in the first front chamber, and both end portions are respectively abutted against the front wall of the first front chamber and the first valve ball 32.

When the high-pressure water pump is in an unactuated state, the first valve ball 32 is far away from the first front chamber under the action of the first return spring 33, and at this time, the first through hole is communicated with the second through hole 31b, so that the water inlet flow passage 11 is communicated with the overflow flow passage 13. In the process of starting the high-pressure water pump, air in the water inlet flow channel 11 can flow into the overflow flow channel 33 through the first flow channel 18, the second through hole 31b, the first middle chamber, the first front chamber, the first through hole and the second flow channel 19 in sequence, and finally is discharged into the atmosphere through the overflow port 13a, so that the exhaust resistance of the power of the engine serving as a power source of the high-pressure water pump can be reduced to a great extent, the load of the engine is reduced, and the effect of helping the power starting of the high-pressure water pump is achieved. When the high-pressure water pump is started, the water pressure of the water in the water inlet flow channel 11 gradually rises, part of the high-pressure water enters the first middle chamber and the first rear chamber through the first flow channel 18, and pushes the steel ball to be propped against the rear end wall of the first front chamber to form a seal, so that the first flow channel 18 and the second flow channel 19 are isolated.

As shown in fig. 1, the low-pressure maintaining valve 40 is for reducing the pressure of water remaining in the outlet flow passage 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.

The cone valve 41 is movably installed in the water outlet flow passage 12, and the rear end surface has a second chamber 41a extending in the longitudinal direction of the cone valve 41, the second chamber being composed of a second front chamber, a second intermediate chamber, and a second rear chamber having sequentially increased diameters. The top of the second front chamber is provided with a third through hole 41b for communicating the second front chamber with the water inlet flow channel 11, and the side part of the second middle chamber is provided with at least one fourth through hole 41c for communicating the second middle chamber with the water outlet flow channel of the high-pressure valve body. In the present embodiment, an annular seal 41d is provided at the tip end of the cone valve 41.

The second valve seat 42 is fixedly installed at the front of the second intermediate chamber, and is provided with a fifth through hole 42a for communicating the second intermediate chamber with the second front chamber.

The second return spring 43 is installed in the outlet flow passage of the outlet connector, and two ends of the second return spring are respectively abutted against the front wall of the outlet flow passage of the outlet connector and the rear wall of the second rear chamber.

A second valve ball 44 is movably mounted within the second front chamber.

A third return spring 45 is mounted in the second front chamber, with its two ends abutting the top wall of the second front chamber and the second valve ball 44, respectively.

When high-pressure water flows into the water inlet flow passage 11, the high-pressure water pushes the cone valve 41 open through the inlet of the water outlet flow passage 12 and flows into the water outlet flow passage. When the water outlet flow passage 12 is closed, a water hammer is formed, the cone valve 41 is closed under the action of the water hammer, the overflow port 13a opens the overflow, and at this time, the water hammer pressure is maintained between the cone valve 41 and the water outlet flow passage 12. Meanwhile, the second valve ball 44 installed inside the cone valve 41 is separated from the surface of the second valve seat 42 under the action of pressure, the cone valve 41 and the low pressure area of the high pressure valve body 10 form a channel, the pressure kept between the cone valve 41 and the water outlet flow channel 12 is gradually released, and when the force of the pressure acting on the second valve ball 44 is smaller than the force value of the third return spring 45, the third return 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 small pressure value is maintained between the cone valve 41 and the outlet flow passage 12. It should be noted that, since the automatic pressure relief function of the high-pressure water valve 40 requires a certain pressure value between the cone valve 41 and the water outlet flow channel 12 to maintain the low-pressure state, the pressure cannot be completely released.

Example operation and Effect

According to the high-pressure water valve and the high-pressure water pump including the high-pressure water valve of the present embodiment, since the high-pressure water valve includes the cooling water supply portion including the cooling water extraction joint and the depressurization nozzle, the high-pressure valve body includes the cooling water extraction port, and the high-pressure water extraction flow passage that communicates the cooling water extraction port with the water inlet flow passage, the cooling water extraction joint is installed in the cooling water extraction port and is connected and communicated with the water inlet of the water cooling flow passage through the water pipe, and the depressurization nozzle is detachably installed in the front end portion of the cooling water extraction joint, the high-pressure water extracted through the high-pressure water extraction flow passage can be depressurized to obtain the cooling water, so that the present embodiment can extract and depressurize a part of the high-pressure water in the water inlet flow passage to obtain the cooling water and deliver the cooling water to the water cooling flow passage, thereby realizing the supply of the cooling water to the water cooling flow passage of the water seal of the high-pressure water pump. Moreover, the cooling water supply part is integrated on the high-pressure valve body, so that the occupied space of the high-pressure water valve is not increased, and excessive cost is not additionally increased.

Further, because the cooling water supply part also comprises a cooling water reflux connector, the high-pressure valve body is also provided with a cooling water reflux port communicated with the overflow flow channel, the cooling water reflux connector is arranged in the cooling water reflux port and is connected and communicated with the water outlet of the water cooling flow channel through a water reflux pipeline, so that the cooling water after heat exchange flows back to the high-pressure valve body through the water reflux pipeline again, and circulation is realized.

In addition, since there is also an easy-to-actuate valve comprising a first valve seat provided in the mounting groove, a first valve ball and a first return spring, the first valve seat having therein a first chamber extending in a length direction of the first valve seat, the first chamber being constituted by a first front chamber, a first rear chamber, and a first intermediate chamber having a diameter larger than diameters of the first front chamber and the first rear chamber, a first through hole for communicating the first front chamber with the second flow passage being provided at a top of the first front chamber, at least one second through hole for communicating the first intermediate chamber and the first rear chamber with the first flow passage being provided at a side portion of the first intermediate chamber and the first rear chamber, the first valve ball is movably arranged in the first middle cavity, the diameter of the first valve ball is larger than that of the first front cavity and that of the first rear cavity, the first reset spring is arranged in the first front cavity, two end parts of the first reset spring are respectively abutted against the front wall of the first front cavity and the first valve ball, the first flow passage and the second flow passage can be communicated in the starting process of the high-pressure water pump in an unactuated state, the first flow passage and the second flow passage are separated after the high-pressure water pump is started, and therefore the load of an engine in the high-pressure water pump in the starting process of the high-pressure water pump can be reduced on the basis of ensuring normal operation of the high-pressure water valve.

In addition, because the low-pressure retaining valve is further arranged, the water outlet flow passage is formed by a high-pressure valve body water outlet flow passage and a water outlet joint water outlet flow passage, the diameter of the high-pressure valve body water outlet flow passage is larger than that of the water outlet joint water outlet flow passage, the low-pressure retaining valve comprises a conical valve, a second valve seat, a second return spring, a second valve ball and a third return spring, the conical valve is movably arranged in the water outlet flow passage, the rear end face is provided with a second cavity extending in the length direction of the conical valve, the second cavity is formed by a second front cavity, a second middle cavity and a second rear cavity, the diameters of the second front cavity are sequentially increased, a third through hole used for enabling the second front cavity to be communicated with the water inlet flow passage, at least one fourth through hole used for enabling the second middle cavity to be communicated with the high-pressure valve body water outlet flow passage is formed in the side portion of the second middle cavity, the second valve seat is fixedly arranged at the front portion of the second middle cavity, the second return spring is arranged at the fifth through hole used for enabling the second middle cavity to be communicated with the second front cavity, the second return spring is arranged in the water outlet flow passage, the second front cavity is capable of reducing the pressure of being respectively, the pressure of the second ball is arranged in the water outlet cavity, and the front cavity is capable of reducing the pressure of being respectively and capable of reducing the pressure.

The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.

Claims (8)

1. The utility model provides a high-pressure water valve, is set up on high-pressure water pump, be equipped with on the pump body of high-pressure water pump and carry out refrigerated water cooling runner to the water seal, its characterized in that includes:

the high-pressure valve body is provided with a water inlet flow channel, a water outlet connector, an overflow flow channel and an overflow port; and

a cooling water supply part for depressurizing a part of the high-pressure water in the water inlet flow passage to obtain cooling water and delivering the cooling water to the water cooling flow passage,

wherein the cooling water supply part comprises a cooling water leading-out connector and a depressurization nozzle,

the high-pressure valve body is also provided with a cooling water outlet and a high-pressure water outlet flow passage which enables the cooling water outlet to be communicated with the water inlet flow passage,

the cooling water leading-out joint is arranged in the cooling water leading-out port and is connected and communicated with the water inlet of the water cooling flow passage through a water conveying pipeline,

the pressure reducing nozzle is detachably arranged in the front end part of the cooling water leading-out connector and is used for reducing the pressure of the high-pressure water led out through the high-pressure water leading-out runner to obtain the cooling water.

2. The high pressure water valve of claim 1, wherein:

wherein the cooling water supply part also comprises a cooling water reflux joint,

the high-pressure valve body is also provided with a cooling water reflux port communicated with the overflow flow passage,

the cooling water reflux connector is arranged in the cooling water reflux mouth and is connected and communicated with the water outlet of the water cooling flow passage through a water reflux pipeline.

3. The high pressure water valve of claim 1, further comprising:

an easy-to-start valve for reducing the load of the engine in the high-pressure water pump during the starting process of the high-pressure water pump,

wherein the high-pressure valve body is also provided with a mounting groove matched with the easily-started valve, a first flow passage which enables the water inlet flow passage to be communicated with the middle rear part of the side part of the mounting groove, and a second flow passage which enables the overflow flow passage to be communicated with the bottom of the mounting groove,

the easy-to-start valve is arranged in the mounting groove, can enable the first flow passage and the second flow passage to be communicated when the high-pressure water pump is in an unactuated state and in the opening process, and enables the first flow passage and the second flow passage to be separated after the high-pressure water pump is started.

4. The high pressure water valve of claim 3, wherein:

wherein 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, a first chamber extending in the length direction of the first valve seat is arranged in the first valve seat, the first chamber is composed of a first front chamber, a first rear chamber and a first middle chamber with a diameter 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 communicating the first front chamber with the second flow passage,

the sides of the first intermediate chamber and the first rear chamber are provided with at least one second through hole for communicating the first intermediate chamber and the first rear chamber with the first flow passage,

the first valve ball is movably arranged in the first middle chamber, the diameter of the first valve ball is larger than that of the first front chamber and the first rear chamber,

the first return spring is installed in the first front cavity, and two end portions are respectively abutted with the front wall of the first front cavity and the first valve ball.

5. The high pressure water valve of claim 1, further comprising:

and a low pressure maintaining valve installed in the water outlet flow passage for reducing the pressure of water remaining in the water outlet flow passage during unloading.

6. The high pressure water valve of claim 5, wherein:

wherein the water outlet flow passage is composed of a high-pressure valve body water outlet flow passage and a water outlet connector water outlet flow passage, the diameter of the high-pressure valve body water outlet flow passage is larger than that of the water outlet connector water outlet flow passage,

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 arranged in the water outlet flow passage, the rear end surface is provided with 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 sequentially increased diameters,

the top of the second front chamber is provided with a third through hole for communicating the second front chamber with the water inlet runner,

the side part of the second intermediate chamber is provided with at least one fourth through hole used for the second intermediate chamber to be communicated with the water outlet flow passage of the high-pressure valve body,

the second valve seat is fixedly arranged at the front part of the second middle chamber and is provided with a fifth through hole for communicating the second middle chamber with the second front chamber,

the second reset spring is arranged in the water outlet flow passage of the water outlet connector, the two end parts are respectively abutted with the front wall of the water outlet flow passage of the water outlet connector and the rear wall of the second rear chamber,

the second valve ball is movably arranged in the second front cavity,

the third return spring is arranged in the second front cavity, and two end parts of the third return spring are respectively abutted with the top wall of the second front cavity and the second valve ball.

7. The high pressure water valve of claim 6, wherein:

wherein, the front end of cone valve is equipped with annular sealing washer.

8. A high pressure water pump having a high pressure water valve as claimed in any one of claims 1 to 7.

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