CN215487855U

CN215487855U - Electronic pressure relief valve

Info

Publication number: CN215487855U
Application number: CN202121336203.XU
Authority: CN
Inventors: 李启鹏; 张松; 李铁东; 李超; 陈桐
Original assignee: Dongfeng Motor Group Co Ltd
Current assignee: Dongfeng Motor Group Co Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-01-11
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses an electronic pressure relief valve which comprises a valve assembly, a valve body and a valve cover, wherein a first chamber and a second chamber are arranged at the bottom of the valve body, the valve assembly comprises a valve rod, a valve head and a second sleeve, a first end of the valve rod is movably arranged in a first through hole, a second end of the valve rod penetrates through a second through hole, the valve head is fixedly arranged at a second end of the valve rod, the valve head can seal an air outlet of the first chamber in an operable mode, the valve head is provided with an air hole for communicating the air outlet with the second sleeve, the second sleeve is fixedly arranged on one side, back to the first chamber, of the valve head, the outer peripheral surface of the second sleeve is provided with a first sealing ring, a gap is formed between the first sealing ring and the inner wall of the first sleeve, and the first sealing ring can be abutted to or separated from a first supporting plate in an operable mode. The utility model can shorten the response time of the pressure release valve, so that the vehicle can avoid the surge phenomenon, and the utility model has strong applicability and low cost.

Description

Electronic pressure relief valve

Technical Field

The utility model belongs to the technical field of pressure relief valves, and particularly relates to an electronic pressure relief valve.

Background

The electronic pressure relief valve is a valve on a passenger car and is arranged on an air inlet pipeline of an engine, and the turbocharger is connected with the engine through the air inlet pipeline. The turbocharger is actually an air compressor, the air input is increased through compressed air, when the pressure release valve is closed, enough air inlet pressure is ensured in an engine air inlet pipe, when the valve of the pressure release valve is opened, redundant gas can be released into the atmosphere, the pressure in the air inlet pipe is reduced, and an engine air inlet pipeline is protected.

During the running process of the vehicle, the turbocharger can obviously improve the power and the torque of the engine, so that the oil consumption is reduced. However, when a vehicle using a turbocharger is accelerated, if the throttle is suddenly released, the flow of the turbocharger is suddenly reduced, and surging occurs. The relief valve functions to release a portion of the gas to atmosphere or before the turbocharger at this time to avoid surge. The prior pressure relief valve has too slow response time and cannot avoid surging.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the electronic pressure relief valve which has the advantages of short opening response time, high efficiency and the function of avoiding surge of the turbocharger.

The technical scheme of the utility model is as follows:

the utility model provides an electronic pressure relief valve, comprising,

the valve body is provided with a first end and a second end which are opposite, a first cavity and a second cavity are arranged in the valve body, the first end of the first cavity is provided with a gas inlet for conveying high-pressure gas, the second end of the first cavity is provided with a gas outlet, the second cavity surrounds the periphery of the first cavity, the side wall of the second cavity is provided with a pressure relief opening, the first end of the second cavity is arranged in a sealing mode, and the second end of the second cavity protrudes out of the second end of the first cavity;

the valve cover is fixedly arranged at the second end of the valve body, a first through hole and a second through hole which are communicated with each other are coaxially arranged in the middle of the valve cover, the first through hole and the second through hole are sequentially close to the valve body, the inner diameter of the first through hole is smaller than that of the second through hole, a first sleeve is fixedly arranged in the second through hole, the first sleeve is arranged in the second cavity, a first supporting plate is arranged in one end, located in the second cavity, of the first sleeve, and a third through hole is formed in the middle of the first supporting plate;

a valve assembly including a valve stem, a valve head and a second sleeve, the valve stem having a first end and a second end opposite to each other, the first end of the valve stem being movably disposed in the first through hole, the second end of the valve stem passing through the second through hole, the valve head being fixedly disposed at the second end of the valve stem, the valve head being operable to seal the gas outlet of the first chamber, the valve head being provided with a vent hole communicating the gas outlet with the second sleeve, the second sleeve being fixedly disposed at a side of the valve head facing away from the first chamber, a gap at the second end of the valve stem being disposed in the second sleeve, the second sleeve being movably disposed in the third through hole, a gap being provided between an end of the second sleeve facing away from the valve head and an end of the second through hole facing away from the valve body, a first sealing ring being disposed on an outer peripheral surface of the second sleeve, the first sealing ring and the inner wall of the first sleeve have a gap therebetween, and the first sealing ring is operatively abutted against or separated from the first support plate.

Further, first sealing ring towards the terminal surface of first backup pad is provided with the second sealing ring, the second sealing ring towards the terminal surface of first backup pad is kept away from the telescopic axis of second, just the second sealing ring towards the terminal surface of first backup pad with have the clearance between the first sleeve inner wall, the second sealing ring operationally with first backup pad top is leaned on or is separated.

Furthermore, an annular second support plate is arranged on the periphery of the second sleeve, the end face, deviating from the third sealing ring, of the first sealing ring is fixedly arranged on the second support plate, and a gap is formed between the second support plate and the inner wall of the first sleeve.

Further, one side of the first supporting plate, which faces the second sealing ring, is provided with a third sealing ring, a gap is reserved between the inner wall of the third sealing ring and the second sleeve, and the second sealing ring is operably abutted against or separated from the third sealing ring.

Further, a bushing is disposed on the gas outlet of the first cavity, and the valve head is operable to seal the bushing of the first cavity.

Further, the valve stem is movably passed through a fixing ring fixed in the first through hole.

Further, a fourth sealing ring is arranged in the first through hole, the fourth sealing ring is arranged on one side, close to the valve body, of the fixing ring, and the valve rod penetrates through the fourth sealing ring.

Further, the valve assembly further comprises a stator, the stator is provided with a first end and a second end which are oppositely arranged, the first end of the stator is fixedly arranged in the first through hole, a coil communicated with a power supply is wound on the stator, and when the pressure release valve is in a closed state, a gap is formed between the second end of the stator and the first end of the valve rod.

Further, the valve component also comprises a spring which is coaxially arranged with the first through hole, one end of the spring is fixedly arranged in the first guide hole of the stator, and the other end of the spring is fixedly arranged in the second guide hole of the valve rod.

Furthermore, the valve component also comprises a guide rod, the spring is surrounded on the guide rod, one end of the guide rod is fixedly arranged in the first guide hole, and the other end of the guide rod is movably arranged in the middle of the second guide hole.

The beneficial effects of the utility model at least comprise:

the present invention provides an electronic pressure relief valve,

the utility model provides a pressure relief valve which comprises a valve assembly, a valve body and a valve cover, wherein the valve body is provided with a first end and a second end which are opposite, a first chamber and a second chamber are arranged in the valve body, the first end of the first chamber is provided with an air inlet used for conveying high-pressure air, the second chamber surrounds the periphery of the first chamber, the side wall of the second chamber is provided with a pressure relief opening, the first section of the second chamber is arranged in a sealing manner, and the second end of the second chamber protrudes out of the second end of the first chamber; the valve cover is fixedly arranged on the second end of the valve body, the middle part of the valve cover is coaxially provided with a first through hole and a second through hole which are communicated with each other, the first through hole and the second through hole are sequentially close to the valve body, the inner diameter of the first through hole is smaller than that of the second through hole, a first sleeve is fixedly arranged in the second through hole and is arranged in the second cavity, a first supporting plate is arranged in one end, located in the second cavity, of the first sleeve, and a third through hole is formed in the middle part of the first supporting plate; the valve assembly comprises a valve rod, a valve head and a second sleeve, wherein the valve rod is provided with a first end and a second end which are opposite, the first end of the valve rod is movably arranged in a first through hole of the valve cover, and the second end of the valve stem passes through the second through hole, and the valve head is fixedly arranged at the second end of the valve stem, the valve head can operatively seal the air outlet of the first chamber, and the valve head is provided with a plurality of air vents with the part that the gas outlet of first chamber corresponds, and the fixed setting of second sleeve is in the valve head one side dorsad first chamber, and the second end clearance of valve rod sets up in the second sleeve, and second sleeve clearance activity sets up in the third through-hole, and the second sleeve is dorsad the one end of valve head with the second through-hole has the clearance between deviating from the one end of valve body, and the telescopic peripheral face of second is provided with first sealing ring, has the clearance between first sealing ring and the first sleeve, and first sealing ring is operationally sealed with the top of first backup pad. When the pressure release valve is closed, high-pressure gas enters the first cavity from the gas inlet of the first cavity, and because the valve head is provided with the plurality of vent holes, the high-pressure gas in the first cavity can enter the third cavity separated from the second cavity by the second sleeve and the valve head along the vent holes, and because the first sealing ring and the first supporting plate are in a sealing state, and the valve head seals the gas outlet of the first cavity, the high-pressure gas in the third cavity and the first cavity cannot enter the second cavity; when the vehicle accelerates, if the throttle is suddenly released, the pressure relief valve is powered on and opened, the valve rod moves towards the first end of the valve rod along the first through hole, the valve head fixedly arranged at the second end of the valve rod also moves towards the first end of the valve rod, the valve head can leave the gas outlet of the first cavity, high-pressure gas enters the second cavity from a gap between the valve head and the gas outlet of the first cavity, meanwhile, the valve head can drive the second sleeve connected with the valve head to move towards the first end of the valve rod while moving towards the first end of the valve rod, a gap can be generated between the first sealing ring fixed on the outer periphery of the second sleeve and the first supporting plate fixed on the first sleeve, gaps are formed between the first sealing ring and the first sleeve and between the first supporting plate and the second sleeve, and then the high-pressure gas in the third cavity can move towards the first end of the valve rod during the valve rod, the high-pressure gas in the second cavity enters the second cavity through the gap, so that the gas in the third cavity can enter the second cavity through the vent hole in the valve head and the gap between the first sealing ring and the first supporting plate in the process of opening the pressure release valve, the outflow channel of the high-pressure gas is increased, the high-pressure gas in the third cavity can be discharged in a short time, the blocking effect of the high-pressure gas in the third cavity on the moving process of the valve head and the valve rod is relieved, the response time of the pressure release valve is shortened, and the surge phenomenon of a vehicle is avoided; and the utility model has strong applicability and low cost.

Drawings

FIG. 1 is a schematic diagram illustrating a closed state of an electro-hydraulic valve according to the present embodiment;

FIG. 2 is a schematic diagram of a portion of the electro-hydraulic valve of FIG. 1 in a closed position;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Description of reference numerals:

1-valve body, 101-bushing; 2-a valve cover, 201-a first sleeve, 202-a first support plate, 203-a third sealing ring, 204-a connecting plate, 205-a first through hole; 301-valve head, 302-guide rod, 303-valve stem, 304-stator, 305-spring, 306-vent, 307-second support plate, 308-first sealing ring, 309-second sealing ring, 310-second sleeve; 311-fixed ring, 312-fourth sealing ring, 100-first chamber, 200-second chamber, 300-third chamber.

Detailed Description

In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.

Fig. 1 is a schematic structural diagram of an electronic hydraulic valve according to an embodiment, fig. 2 is a schematic structural diagram of a part of the electronic hydraulic valve in fig. 1, fig. 3 is a partial enlarged view of a part a in fig. 2, and with reference to fig. 1 to 3, the present invention provides an electronic pressure relief valve, which may include a valve assembly, a valve body 1, and a valve cover 2.

The valve body 1 is provided with a first end and a second end which are opposite, a first chamber 100 and a second chamber 200 are arranged in the valve body 1, the first end of the first chamber 100 is provided with an air inlet for conveying high-pressure air, the second end of the first chamber 100 is provided with an air outlet, the second chamber 200 surrounds the periphery of the first chamber 100, the side wall of the second chamber 200 is provided with a pressure relief opening, the first end of the second chamber 200 is arranged in a sealing manner, and the second end of the second chamber 200 protrudes out of the second end of the first chamber 100; the valve cover 2 is fixedly arranged at the second end of the valve body 1, the middle part of the valve cover 2 is coaxially provided with a first through hole 205 and a second through hole which are communicated with each other, the first through hole 205 and the second through hole are sequentially close to the valve body 1, the inner diameter of the first through hole 205 is smaller than that of the second through hole, a first sleeve 201 is fixedly arranged in the second through hole, the first sleeve 201 is arranged in the second chamber 200, a first supporting plate 202 is arranged in one end, located in the second chamber 200, of the first sleeve 201, and a third through hole is formed in the middle part of the first supporting plate 202; the valve assembly comprises a valve rod 303, a valve head 301 and a second sleeve 310, wherein the valve rod 303 is provided with a first end and a second end which are opposite, the first end of the valve rod 303 is movably arranged in the first through hole, the second end of the valve rod 303 penetrates through the second through hole, the valve head 301 is fixedly arranged at the second end of the valve rod 303, the valve head 301 can seal the air outlet of the first chamber 100 in an operable way, the valve head 301 is provided with a vent hole 306 which communicates the air outlet with the second sleeve 310, the second sleeve 310 is fixedly arranged at the side, facing away from the first chamber 100, of the valve head 301, a gap is formed at the second end of the valve rod 303 in the second sleeve 310, the second sleeve 310 is movably arranged in the third through hole in a clearance mode, a gap is formed between the end, facing away from the valve head 301, of the second sleeve 310 and the end, facing away from the valve body, of the second through hole, the outer peripheral surface of the second sleeve 310 is provided with a first sealing ring 308, a gap is formed between the first sealing ring 308 and the inner wall of the first sleeve 201, the first seal ring 308 is operable to abut against or separate from the first support plate 202.

When the pressure relief valve is closed, high-pressure gas enters the first cavity 100 from the gas inlet of the first cavity 100, and due to the vent hole 306 arranged on the valve head 301, the high-pressure gas in the first cavity 100 can enter the third cavity 300 of the second cavity 200 separated by the second sleeve 310 and the valve head 301 along the vent hole 306, and because the first sealing ring 308 and the first support plate 202 are in a sealing state, and the valve head 301 seals the gas outlet of the first cavity 100, the high-pressure gas in the third cavity 300 and the first cavity 100 can not enter the second cavity 200; when the vehicle is accelerated, if the gas is suddenly released, the relief valve is energized to open, the valve rod 303 moves along the first through hole 205 towards the first end of the valve rod 303, the valve head 301 fixedly arranged at the second end of the valve rod 303 also moves towards the first end of the valve rod 303, the valve head 301 leaves the gas outlet of the first cavity 100, high-pressure gas enters the second cavity 20 from the gap between the valve head 301 and the gas outlet of the first cavity 100, meanwhile, the valve head 301 moves towards the first end of the valve rod 303 and simultaneously drives the second sleeve 310 connected with the valve head 301 to move towards the first end of the valve rod 303, a gap is generated between the first sealing ring 308 fixed on the outer periphery of the second sleeve 310 and the first supporting plate 202 fixed on the first sleeve 201, and gaps are respectively arranged between the first sealing ring 308 and the first sleeve 201 as well as between the first supporting plate 202 and the second sleeve 310, then the high-pressure gas in the third chamber 300 will pass through the above-mentioned gap and enter the second chamber 200 in the process that the valve head 301 moves towards the first end of the valve rod 303, so that the gas in the third chamber 300 can enter the second chamber 200 through the vent hole 306 on the valve head 301 and the gap between the first sealing ring 308 and the first support plate 202 in the process that the pressure relief valve opens, the outflow passage of the high-pressure gas is increased, and thus the high-pressure gas in the third chamber 300 can be discharged in a short time, the blocking effect of the high-pressure gas in the third chamber 300 on the moving process of the valve head 301 and the valve rod 303 is released, the response time of the pressure relief valve is shortened, and the surge phenomenon of the vehicle is avoided.

In addition, the first through hole can be designed into a reducing through hole according to actual needs, the reducing through hole can be stepped and can be flexibly adjusted according to actual needs, and specific limitation is not made herein.

Further, in order to improve the sealing effect, referring to fig. 2 and fig. 3, in this embodiment, the end surface of the first sealing ring 308 facing the first support plate 202 is provided with a second sealing ring 309, the end surface of the second sealing ring 309 facing the first support plate 202 is away from the axis of the second sleeve 310, and a gap is formed between the end surface of the second sealing ring 309 facing the first support plate 202 and the inner wall of the first sleeve 201, and the second sealing ring 309 is operably abutted against or separated from the first support plate 202. In practical operation, because the end surface of the second sealing ring 309 facing the first support plate 202 is away from the axis of the second sleeve 310, the side surface of the sealing assembly formed by the second sealing ring 309 and the first sealing ring 308, which is in contact with the high-pressure gas in the third cavity 300, presents an inclined surface, and this design can well ensure that the sealing assembly is not flushed out by the high-pressure gas in the third cavity 300 when the pressure relief valve is closed, thereby ensuring good sealing performance, and the sealing assembly has effective sealing performance within a certain size deviation range. In the present invention, the first sealing ring 308 and the second sealing ring 309 may be an integral sealing ring, which may improve the connection strength between the first sealing ring 308 and the second sealing ring 309, and of course, glue may be used to bond the two, which is not limited in this respect.

Further, in order to improve the connection strength between the first sealing ring 308 and the second sleeve 310, referring to fig. 2 and fig. 3, in this embodiment, an annular second supporting plate 307 may be disposed on the outer periphery of the second sleeve 310, an end surface of the first sealing ring 308 facing away from the third sealing ring 203 is fixedly disposed on the second supporting plate 307, and a gap is formed between the second supporting plate 307 and the inner wall of the first sleeve 201. The first sealing ring 308 and the second supporting plate 307 can be connected by glue, but other connection methods can also be used, and are not limited in detail here.

Further, in order to improve the sealing performance, in the present embodiment, in combination with fig. 2 and 3, a side of the first support plate 202 facing the second sealing ring 309 may be provided with a third sealing ring 203, a gap is provided between an inner wall of the third sealing ring 203 and the second sleeve 310, and the second sealing ring 309 is operably abutted against or separated from the third sealing ring 203. Similarly, the second sealing ring 309 and the first supporting plate 202 may be connected by glue, and is not limited in particular.

Further, referring to fig. 1 and 2, in this embodiment, a bushing 101 may be disposed on the air outlet of the first cavity 100, and the valve head 301 may be operably pressed against or separated from the bushing 101. Since the side wall of the first cavity 100 is formed by casting, and the bush 101 made of metal is added, the reliability of the pressure release valve can be improved.

Specifically, referring to fig. 2, in the present embodiment, the valve rod 303 is movably inserted through a fixing ring fixed in the first through hole 205. Of course, with reference to fig. 2, a fourth sealing ring 312 may be further disposed in the first through hole 205, the fourth sealing ring 312 is disposed on one side of the fixing ring 311 close to the valve body 1, and the valve rod 303 penetrates through the fourth sealing ring 312, so that the first through hole 205 and the third cavity 300 can be sealed and isolated, and certainly, in order to further improve the sealing effect, a plurality of rings having a sealing function may be further disposed, which is not specifically limited herein.

Further, referring to fig. 1, in this embodiment, the valve assembly may further include a stator 304, the stator 304 has a first end and a second end that are opposite to each other, the first end of the stator 304 is fixedly disposed in the first through hole, a coil that is connected to a power supply is wound on the stator 304, and when the pressure relief valve is in a closed state, the second end of the stator 304 has a gap with the first end of the valve rod 303. When the pressure relief valve is opened, a coil on the stator is electrified to generate electromagnetic force, and the second end of the stator 304 attracts the first end of the valve rod 303, so that the valve rod 303 moves and drives the valve head 301 to move, the valve head 301 is separated from the bushing 101, and pressure relief is realized.

Further, referring to fig. 1, in this embodiment, the valve assembly may further include a spring 305 coaxially disposed with the first through hole, one end of the spring 305 is fixedly disposed in the first guiding hole of the stator 304, the other end of the spring 305 is fixedly disposed in the second guiding hole of the valve rod 303, and the spring 305 is under compression when not energized, so that the stator 304 and the valve rod 303 are forced to separate; when the coil is electrified, the electromagnetic force of the stator 304 is greater than the compression elastic force of the spring 305, so that the stator 304 attracts the valve rod 303, the valve rod 303 moves and drives the valve head 301 to move, the valve head 301 is separated from the bushing 101, and pressure relief is realized.

Further, referring to fig. 1, in the present embodiment, the valve assembly may further include a guide rod 302, the spring 305 surrounds the guide rod 302, one end of the guide rod 302 is fixedly disposed in the first guide hole, and the other end of the guide rod is movably disposed in the middle of the second guide hole, so that the valve rod 303 moves along the guide rod 302 when the relief valve is switched between the operating state and the closed state, and the movement path of the valve rod 303 is prevented from deviating.

In terms of materials, the first sealing ring 308 and the second sealing ring 309 can be made of polytetrafluoroethylene, so that the flexibility is moderate, and the heat resistance is certain; in order to ensure good sealing performance by matching with polytetrafluoroethylene, the third sealing ring 203 may be made of fluorosilicone rubber, which has good heat resistance. Of course, other sealing materials may be selected, and are not particularly limited herein.

When electronic relief valve specifically used, can set up valve gap 2 at the top, valve body 1 sets up in the bottom, can avoid like this that oil drops and water droplet in the engine get into inside the relief valve along with high-pressure gas to improve the life of relief valve. In the present utility model, fig. 1 and fig. 3 are front views from two perspectives, wherein the pressure relief port is not shown in fig. 1, and the pressure relief port is shown in fig. 2.

According to the electronic pressure relief valve provided by the utility model, the sealing structures of the first sealing ring 308, the second sealing ring 309 and the third sealing ring 203 are designed to be opened along with the opening of the pressure relief valve like switches, so that when the pressure relief valve is opened, gas in the third chamber 300 of the pressure relief valve can be discharged outwards through the vent hole 306 and can also be discharged through the opened sealing structure, the discharge of the gas in the third chamber 300 is greatly accelerated, and the opening response time of the pressure relief valve is effectively reduced; in addition, in this seal structure design, when the relief valve is closed, the gas leaking from the third chamber 300 to the second chamber 200 is extremely small, and the sealing performance is good. The utility model discloses a suitability is very strong, and low cost.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An electronic pressure relief valve, characterized in that the pressure relief valve comprises:

2. An electronic pressure relief valve according to claim 1 wherein the end face of the first sealing ring facing the first support plate is provided with a second sealing ring, the end face of the second sealing ring facing the first support plate is away from the axis of the second sleeve, and a gap is provided between the end face of the second sealing ring facing the first support plate and the inner wall of the first sleeve, the second sealing ring being operatively abutted against or separated from the first support plate.

3. The electronic pressure relief valve according to claim 2, wherein an annular second support plate is arranged on the outer periphery of the second sleeve, an end face of the first sealing ring, which faces away from the third sealing ring, is fixedly arranged on the second support plate, and a gap is formed between the second support plate and the inner wall of the first sleeve.

4. An electronic pressure relief valve according to claim 3 wherein the side of the first support plate facing the second sealing ring is provided with a third sealing ring, the inner wall of the third sealing ring has a gap with the second sleeve, and the second sealing ring is operatively abutted against or separated from the third sealing ring.

5. An electronic pressure relief valve according to any one of claims 1 to 4 wherein the outlet port of the first chamber is provided with a bushing and the valve head is operable to seal the bushing of the first chamber.

6. The electronic pressure relief valve of claim 5 wherein the valve stem is movable through a retaining ring secured within the first through bore.

7. The electronic pressure relief valve according to claim 6, wherein a fourth sealing ring is arranged in the first through hole, the fourth sealing ring is arranged on one side of the fixing ring close to the valve body, and the valve rod penetrates through the fourth sealing ring.

8. The electronic pressure relief valve of claim 7 wherein the valve assembly further comprises a stator having a first end and a second end opposite to each other, the first end of the stator is fixedly disposed in the first through hole, the stator is wound with a coil that is in communication with a power source, and the second end of the stator is spaced from the first end of the valve stem when the pressure relief valve is closed.

9. The electronic pressure relief valve according to claim 8 wherein the valve assembly further comprises a spring disposed coaxially with the first through hole, one end of the spring being fixedly disposed within the first guide hole of the stator, the other end of the spring being fixedly disposed within the second guide hole of the valve stem.

10. The electronic pressure relief valve of claim 9 wherein the valve assembly further comprises a guide rod, the spring is looped around the guide rod, one end of the guide rod is fixedly disposed in the first guide hole, and the other end of the guide rod is movably disposed in the middle of the second guide hole.