High-pressure pressure valve stable in driving

Abstract

The utility model provides a high-pressure pressure valve stable in driving, and belongs to the technical field of valves. The push rod is arranged in the static iron core in a sliding mode, the valve seat and the movable iron core are arranged at the two ends of the static iron core respectively, the movable iron core is connected with one end of the push rod, in addition, a plurality of guide assemblies are evenly distributed between the movable iron core and the static iron core, and each guide assembly comprises a guide column and a guide notch. The guide column is installed on the static iron core and arranged in the axial direction of the push rod, and the guide notch is formed in the movable iron core and matched with the guide column, so that the movable iron core can be guided through the guide column and the guide notch when moving, the moving stability of the movable iron core is maintained, and therefore the influence of high-pressure oil liquid impact on the movable iron core is reduced; and the matching effect of the movable iron core and the static iron core is better, the driving stability is better, the use performance of the high-pressure pressure valve is better guaranteed, and the service life of the high-pressure pressure valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a high pressure pressure valve of driving stability. BACKGROUND

[0002] The solenoid valve is a kind of valve, and the magnetic field generated by the coil can drive the moving iron core to move, so that the valve core moves in the valve body, to open or close the valve passage, to meet the use demand.

[0003] At present, the structure of the existing high pressure pressure valve on the market usually includes a static core, a moving core, a valve seat and a valve core, the static core is provided with a coil assembly, the moving core is slidably arranged in the static core, the valve seat is connected to one end of the static core, and the valve core is installed in the valve seat and selectively contacts the push rod of the moving core, a magnetic field is generated after the static core is electrified, the push rod of the moving core moves in the valve seat, so that the valve core can move in the valve seat, to open or close the flow passage of the valve seat. In addition, in order to reduce the overall volume, the moving core is usually directly sleeved on the push rod of the moving core, and the moving core is disc-shaped and arranged at one end of the coil assembly, which can maximize the reduction of axial space occupation while meeting the extension and retraction movement of the push rod. Although the above structure can meet the conventional on-off control, when adjusting the flow, the high-pressure oil liquid will impact the valve core due to its application in high-pressure environment, and the push rod that drives the valve core to move will also be impacted by the high-pressure oil liquid due to the influence of machining precision and assembly gap, so that the push rod will tilt, vibrate and other problems. In addition, after the existing moving core is fixedly connected with the push rod, the moving core completely relies on the cooperation of the push rod and the static core to realize installation support and movement guidance, in addition, in order to ensure the smooth movement of the push rod, there is usually a gap between the push rod and the inner wall of the static core, so in high-pressure environment, the imbalance of the moving core is easily caused, which leads to the insufficient cooperation stability of the moving core and the static core, affects the use performance of the high-pressure pressure valve and shortens the service life. SUMMARY

[0004] In view of the above problems existing in the prior art, the present application provides a high pressure pressure valve with stable driving, which is arranged in an annular array on the static core, each guide column is arranged along the axial direction of the push rod, and a plurality of guide notches corresponding to the guide columns are formed on the outer edge of the moving core along the axial direction, and a self-adapting contact assembly is arranged in each guide notch. The cooperation of the guide column and the guide notch guides the movement of the moving core, ensures the balance of the moving core, and the self-adapting contact assembly can reduce the assembly gap between the guide column and the guide notch, so that the guide column can always guide the movement of the moving core, further improve the stability of the cooperation between the moving core and the static core, and ensure the use performance of the high pressure pressure valve and prolong the service life.

[0005] The specific technical solutions are as follows:

[0006] The high-pressure pressure valve with stable driving force comprises a static iron core, a dynamic iron core, a push rod, a valve seat, a valve core and a return spring, a coil assembly is arranged in the static iron core, the push rod is arranged in the static iron core and is arranged in sliding mode, the valve seat is arranged at one end of the static iron core, the dynamic iron core is arranged at the end of the static iron core away from the valve seat and is fixedly connected with the push rod, a valve channel is arranged in the valve seat, a throttling opening is arranged in the valve channel, one end of the push rod extends to the throttling opening in the valve channel, a valve core is arranged in the valve channel and selectively contacts the push rod at the throttling opening, an oil inlet hole and an oil outlet hole which are communicated with the valve channel are respectively arranged on the valve seat and at both sides of the throttling opening, and the return spring is arranged at the end of the push rod away from the valve core and abuts against the dynamic iron core, and the high-pressure pressure valve with stable driving force further comprises a plurality of guide assemblies, the plurality of guide assemblies are arranged between the static iron core and the dynamic iron core, and the plurality of guide assemblies are arranged in annular array mode with the shaft of the push rod as the axis.

[0007] Furthermore, each guide assembly comprises a guide column and a guide notch, a concave cavity is arranged at the end of the static iron core away from the valve seat, a plurality of insertion holes are arranged on the cavity bottom of the concave cavity along the axial direction of the push rod, the plurality of insertion holes are arranged in annular array mode with the shaft of the push rod as the axis, one guide column is arranged in each insertion hole, and one end of the guide column extends into the concave cavity, the dynamic iron core is arranged in the concave cavity, and a plurality of guide notches are arranged on the outer edge of the dynamic iron core in annular array mode along the central axis of the dynamic iron core, and one end of the guide column extending into the concave cavity is inserted into one guide notch.

[0008] The high-pressure pressure valve with stable driving force, wherein the end of the static iron core provided with the concave cavity is provided with an inner cover, and the return spring is arranged between the dynamic iron core and the inner cover.

[0009] The high-pressure pressure valve with stable driving force, wherein each guide assembly further comprises a self-adapting contact assembly, the self-adapting contact assembly comprises an arc-shaped contact piece, an extension rod and a self-adapting spring, a sliding hole is arranged on the dynamic iron core in each guide notch along the radial direction of the dynamic iron core, one end of the extension rod is arranged in the sliding hole in sliding mode, the self-adapting spring is arranged in the sliding hole and abuts against the end of the extension rod, the other end of the extension rod is provided with the arc-shaped contact piece, and the side of the arc-shaped contact piece away from the extension rod abuts against the corresponding guide column.

[0010] The high-pressure pressure valve with stable driving force, wherein the hole wall of the sliding hole is provided with a first guide plane arranged along the axial direction thereof, and the outer wall of the extension rod is provided with a second guide plane corresponding to the first guide plane and arranged along the axial direction thereof.

[0011] The high-pressure pressure valve with stable driving force, wherein the self-adapting contact assembly further comprises a pad, the pad is arranged on the hole bottom of the sliding hole, and one end of the self-adapting spring away from the extension rod abuts against the pad.

[0012] The high-pressure pressure valve with stable driving, wherein the end of the moving iron core away from the valve seat is provided with a protrusion, and the end of the reset spring abutting against the moving iron core is sleeved on the protrusion.

[0013] The high-pressure pressure valve with stable driving, wherein the outer cover is a plastic part, the outer cover covers the end of the static iron core provided with the concave cavity, the outer cover is provided with a plug connector, and the wire connector of the coil assembly extends into the plug connector.

[0014] The high-pressure pressure valve with stable driving, wherein the outer cover is threadedly connected with the static iron core.

[0015] The high-pressure pressure valve with stable driving, wherein the valve channel penetrates through both ends of the valve seat, the port of the end of the valve channel away from the static iron core forms an oil inlet hole, and a plurality of oil outlet holes are formed in the outer side wall of the end of the valve seat close to the static iron core and are arranged in a ring array around the shaft of the valve seat.

[0016] The high-pressure pressure valve with stable driving, wherein the valve core is a ball, the port of the side of the throttle close to the push rod is arranged in a horn shape, the valve core is located in the horn of the throttle, and a spherical groove matched with the surface of the valve body is formed on the end face of the end of the push rod extending into the valve channel.

[0017] The high-pressure pressure valve with stable driving, wherein a filter screen is sleeved on the end of the valve seat and located at the oil inlet hole, the filter screen is arranged in a barrel shape, and the barrel opening of the filter screen is sleeved on the valve seat.

[0018] The positive effect of the technical scheme is that:

[0019] The high-pressure pressure valve with stable driving, wherein a plurality of guide assemblies are arranged between the static iron core and the moving iron core, each guide assembly comprises a guide column and a guide notch, the guide column is arranged along the axial direction of the push rod on the moving iron core and is fixedly installed at one end on the static iron core, the guide notch is arranged on the outer edge of the moving iron core, and the other end of the guide column is inserted into the guide notch and slides in the guide notch, so that when the coil assembly in the static iron core is electrified to generate a magnetic field to drive the moving iron core to move or the reset spring drives the moving iron core to move, the moving iron core can be guided by the sliding of the guide column in the guide notch, the stability of the moving iron core is maintained, the high-pressure impact environment is better adapted, the flow regulation stability is better, the use performance of the high-pressure pressure valve is ensured, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure diagram of an embodiment of the high-pressure pressure valve with stable driving.

[0021] Figure 2The utility model discloses a kind of high-pressure pressure valve of driving stability of section view of the utility model;

[0022] Figure 3 For the structure diagram of arc contact piece, telescopic rod of the preferred embodiment of the utility model;

[0023] Figure 4 For the structure diagram of sliding hole in guiding notch of the preferred embodiment of the utility model.

[0024] In the drawing: 1, static core;11, coil assembly;12, recess;13, jack;14, inner cover;2, moving core;21, sliding hole;22, convex edge;211, first guide plane;3, push rod;4, valve seat;41, valve channel;42, throttling opening;43, oil inlet hole;44, oil outlet hole;5, valve core;6, return spring;7, guide assembly;71, guide column;72, guiding notch;73, self-adapting contact assembly;731, arc contact piece;732, telescopic rod;733, self-adapting spring;734, cushion block;7321, second guide plane;8, outer cover;81, plug connector;9, filter screen. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the following embodiments are combined with the attached Figure 1 to attached Figure 4 The technical scheme provided by the utility model is specifically described, but the following content is not as the limitation of the utility model.

[0026] Figure 1 For the structure diagram of the embodiment of the utility model of a kind of high-pressure pressure valve of driving stability; Figure 2 For the section view of the utility model of a kind of high-pressure pressure valve of driving stability. As shown in Figure 1 and Figure 2 The utility model provides a kind of high-pressure pressure valve of driving stability, including: static core 1, moving core 2, push rod 3, valve seat 4, valve core 5, return spring 6 and guide assembly 7.

[0027] Specifically, the static iron core 1 is arranged in a ring-shaped column, and the coil assembly 11 is coaxially arranged in the static iron core 1. The coil assembly 11 generates a magnetic field after being electrified to push the moving iron core 2 to move. At this time, the push rod 3 is arranged in the static iron core 1 and is arranged in a sliding manner, so that the slide rod can move along the axial direction of the slide rod relative to the static iron core 1, thereby providing a condition for the push rod 3 to push the valve core 5 to move. In addition, the valve seat 4 is arranged at one end of the static iron core 1. Preferably, an embedding hole is formed at one end of the static iron core 1, and one end of the valve seat 4 is installed in the embedding hole in an interference fit manner, thereby realizing stable installation of the valve seat 4 on the static iron core 1. In addition, the moving iron core 2 is arranged at the end of the static iron core 1 away from the valve seat 4 and is fixedly connected with the push rod 3, so that the push rod 3 can form an integral body with the moving iron core 2, thereby enabling the push rod 3 to move when the moving iron core 2 acts, thereby realizing flow opening and closing and size adjustment. In addition, the valve seat 4 is provided with a valve channel 41, and a throttling port 42 is arranged in the valve channel 41, that is, a variable cross-section change occurs in the inner wall of the valve channel 41 to form a narrow port in the middle of the valve channel 41, thereby realizing throttling. In addition, one end of the push rod 3 extends to the throttling port 42 in the valve channel 41, and the valve core 5 is arranged in the valve channel 41 and selectively contacts the push rod 3, that is, when the push rod 3 pushes the valve core 5 to move towards the throttling port 42, the size of the throttling port 42 can be gradually reduced until the throttling port 42 is closed, thereby meeting the flow regulation and on-off control requirements. When the push rod 3 is pushed in the opposite direction, the valve core 5 is pushed away in the opposite direction under the action of high-pressure oil, thereby realizing the opening of the throttling port 42 and the increasingly larger opening of the throttling port 42, thereby meeting the flow on-off and flow regulation requirements. In addition, the oil inlet hole 43 and the oil outlet hole 44 are arranged on the valve seat 4 and located on both sides of the throttling port 42, respectively, and the oil inlet hole 43 and the oil outlet hole 44 are connected with the valve channel 41. The oil can enter the valve channel 41 from the oil inlet hole 43 and be discharged from the oil outlet hole 44 after passing through the throttling port 42, thereby meeting the normal use requirements of the valve. In addition, the reset spring 6 is arranged at the end of the push rod 3 away from the valve core 5 and abuts against the moving iron core 2, so that the push rod 3 can be pushed towards the side away from the valve core 5 under the action of the moving iron core 2, and then the push rod 3 can be pushed towards the side of the valve core 5 by the reset spring 6 when the coil assembly 11 is de-energized or the generated magnetic field is weak, that is, the moving iron core 2 and the reset spring 6 jointly act on the push rod 3 to control the sliding of the push rod 3.

[0028] Specifically, a plurality of guide assemblies 7 are arranged between the static iron core 1 and the dynamic iron core 2, and the plurality of guide assemblies 7 are arranged in a ring array with the shaft of the push rod 3 as the axis, so that the guide assemblies 7 are uniformly distributed on the static iron core 1 and the dynamic iron core 2. In addition, a recessed cavity 12 is formed at one end of the static iron core 1 away from the valve seat 4, a plurality of insertion holes 13 are formed on the bottom of the recessed cavity 12 along the axial direction of the push rod 3, and the plurality of insertion holes 13 are arranged in a ring array with the shaft of the push rod 3 as the axis. Each insertion hole 13 is provided with a guide column 71 of a guide assembly 7, that is, the guide column 71 is installed on the static iron core 1 through the insertion hole 13, and the recessed cavity 12 provides space for the installation of the guide assembly 7 and the subsequent static iron core 1. In addition, one end of the guide column 71 extends into the recessed cavity 12, and the dynamic iron core 2 is arranged in the recessed cavity 12, and a plurality of guide notches 72 are arranged on the outer edge of the dynamic iron core 2 in a ring array along the central axis. After the dynamic iron core 2 is installed in place in the recessed cavity 12 of the static iron core 1, one end of the guide column 71 extending into the recessed cavity 12 is inserted into one of the guide notches 72, so that the guide column 71 and the guide notch 72 are one-to-one corresponding, and the dynamic iron core 2 and the static iron core 1 are guided by multiple points. Thus, the stability of the dynamic iron core 2 during movement is better maintained, the dynamic iron core 2 is less affected by the push rod 3, the cooperation between the dynamic iron core 2 and the static iron core 1 is better, the driving stability is higher, and the high-pressure environment is better adapted to, so that the use performance of the high-pressure pressure valve is ensured and the service life is longer.

[0029] More specifically, an inner cover 14 is arranged at one end of the static iron core 1 provided with the recessed cavity 12, and the inner cover 14 is embedded at the cavity opening of the recessed cavity 12 to achieve the closure of the recessed cavity 12. Preferably, a sealing ring is arranged between the inner cover 14 and the inner wall of the recessed cavity 12 to prevent oil leakage through the arrangement channel of the push rod 3 into the recessed cavity 12, and the structure design is more reasonable. In addition, the return spring 6 is arranged between the dynamic iron core 2 and the inner cover 14, that is, the inner cover 14 also serves as the abutting base of the return spring 6 to ensure that the return spring 6 can provide a pushing force for the dynamic iron core 2.

[0030] Figure 3 A structure diagram of an arc-shaped contact piece and a telescopic rod of a preferred embodiment of the utility model. As shown in Figure 2 and Figure 3As shown, each guide assembly 7 further comprises an adaptive contact assembly 73, which comprises an arc-shaped contact piece 731, an extension rod 732 and an adaptive spring 733. During installation, a sliding hole 21 is further formed on the moving iron core 2 and located in each guide notch 72 and in the radial direction of the moving iron core 2, the sliding hole 21 is a blind hole, and one end of the extension rod 732 is slidingly arranged in the sliding hole 21, so that the extension rod 732 can slide in the sliding hole 21 to adjust the length of the extension rod 732 extending out of the sliding hole 21. Moreover, the adaptive spring 733 is arranged in the sliding hole 21 and abuts against the end of the extension rod 732, that is, the extension rod 732 is floating in the sliding hole 21 through the adaptive spring 733, which meets the adjustment requirement of the length of the extension rod 732 extending out of the sliding hole 21. In addition, the arc-shaped contact piece 731 is installed on the other end of the extension rod 732 and abuts against the corresponding guide column 71 on the side away from the extension rod 732, that is, the arc-shaped contact piece 731 is pressed against the outer wall of the guide column 71 by the adaptive spring pushing the extension rod 732, so that if the subsequent guide column 71 is worn after the valve is used for a long time, the arc-shaped contact piece 731 can still be pushed to the guide column 71 through the adaptive spring 733, so that the moving iron core 2 can always cooperate with the guide column 71 through the adaptive contact assembly 73, ensuring that the guide column 71 can always guide the movement of the moving iron core 2, thereby always ensuring the use performance of the valve. Preferably, the material of the arc-shaped contact piece 731 is the same as that of the shaft sleeve on the market, which has better wear resistance and longer service life. In addition, since the shaft sleeve is a commonly used product on the market, the arc-shaped contact piece 731 can be directly cut from the existing shaft sleeve, which is simple and convenient to manufacture.

[0031] Figure 4 It is a structural view of the sliding hole in the guide notch of a preferred embodiment of the utility model. As shown in Figure 3 and Figure 4 As shown, the hole wall of the sliding hole 21 is further provided with a first guide plane 211, which is arranged in the axial direction of the sliding hole 21, so that the length direction of the sliding hole 21 is covered by the first guide plane 211. At the same time, the outer wall of the extension rod 732 is arranged with a second guide plane 7321 corresponding to the first guide plane 211 in the axial direction, so that when the extension rod 732 is installed in the sliding hole 21, the extension rod 732 and the sliding hole 21 can be guided and circumferentially limited through the cooperation of the first guide plane 211 and the second guide plane 7321, preventing the arc-shaped contact piece 731 from being unable to completely fit the outer wall of the guide column 71 after the circumferential rotation of the extension rod 732, thereby causing excessive wear, and the structural design is more reasonable.

[0032] More specifically, each adaptive contact assembly 73 further comprises a pad 734, at this time, the pad 734 is arranged at the bottom of the sliding hole 21, since the sliding hole 21 is a blind hole, in order to facilitate processing, the hole bottom of the sliding hole 21 is tapered by using a drill bit to drill a hole first, which is not convenient for the installation of the adaptive spring 733, at this time, the pad 734 is arranged at the bottom of the sliding hole 21, and the end of the adaptive spring 733 away from the telescopic rod 732 is abutted on the pad 734, so that the pad 734 forms a relatively flat platform at the bottom of the sliding hole 21, ensuring the stability of the adaptive spring 733 after installation.

[0033] More specifically, the dynamic iron core 2 further comprises a protrusion 22 at the end away from the valve seat 4, the protrusion 22 is arranged in a ring shape, and the protrusion 22 is coaxially arranged outside the push rod 3, during assembly, the end of the reset spring 6 abutting on the dynamic iron core 2 is sleeved on the protrusion 22, that is, the protrusion 22 provides a sleeve for the end of the reset spring 6 on the dynamic iron core 2, ensuring that the end of the reset spring 6 can stably stay at the corresponding position on the dynamic iron core 2, improving the stability of the installation of the reset spring 6.

[0034] More specifically, the static iron core 1 further comprises an outer cover 8, at this time, the outer cover 8 is a plastic part and can be directly injection molded. In addition, the outer cover 8 is covered on the end of the static iron core 1 provided with the recess 12, which realizes the wrapping of the outer side of the inner cover 14 and other structures, improving the protection effect. In addition, the outer cover 8 is provided with a plug connector 81, and the wire connector of the coil assembly 11 extends into the plug connector 81, realizing the quick connection of the coil assembly 11 and the external circuit through the plug connector 81, which is more convenient to connect and more reasonable in structure design.

[0035] More specifically, the outer cover 8 and the static iron core 1 are connected by threads, which facilitates the disassembly and assembly of the outer cover 8 on the static iron core 1, making the assembly more convenient, and also facilitating subsequent maintenance.

[0036] More specifically, the valve channel 41 penetrates through both ends of the valve seat 4, and when the valve seat 4 is connected to the static iron core 1, the end port of the valve channel 41 is coaxially arranged with the center hole of the static iron core 1, facilitating the push rod 3 to extend into the valve channel 41. At the same time, the port of the end of the valve channel 41 away from the static iron core 1 forms an oil inlet hole 43, and a plurality of oil outlet holes 44 are formed on the outer side wall of the end of the valve seat 4 close to the static iron core 1, the plurality of oil outlet holes 44 are arranged in a ring array with the shaft of the valve seat 4 as the axis, realizing the uniform distribution of the oil outlet holes 44 on the valve seat 4, making the flow more uniform, and during use, the oil enters the valve channel 41 through the oil inlet hole 43 and is discharged through the oil outlet hole 44, meeting the valve use requirements.

[0037] More specifically, the valve core 5 for controlling the throttle 42 of the valve channel 41 is a ball, the orifice of the throttle 42 near the side of the push rod 3 is arranged in a trumpet shape, after installation, the valve core 5 is located in the trumpet-shaped inner of the throttle 42, so that the valve core 5 cooperates with the throttle 42 to realize the flow start-stop control and adjustment, and the linear sealing can be realized, the sealing effect is better, and in addition, the flow can be gradually increased through the trumpet-shaped orifice, and the adaptability is better. In addition, a spherical groove matched with the surface of the valve body is formed on the end face of the end of the push rod 3 extending into the valve channel 41, a ball bowl is formed through the spherical groove, so that when the valve core 5 is pushed away from the throttle 42 by high-pressure oil, the movement of the valve core 5 can be limited through the spherical groove, so that the valve core 5 is always in the middle of the throttle 42, thereby avoiding the problem that the valve core 5 moves to one side of the throttle 42 to cause uneven flow at each position of the throttle 42, thereby ensuring that the flow of oil flowing out of each oil outlet hole 44 is more uniform.

[0038] More specifically, a filter screen 9 is further sleeved on the valve seat 4 and located at one end of the oil inlet hole 43, at this time, the filter screen 9 is arranged in a barrel shape, and during installation, the barrel opening of the filter screen 9 is sleeved on the valve seat 4, that is, the impurities of the oil entering the valve through the filter screen 9 are limited from entering the valve, oil filtration is achieved, and the service life of the valve is prolonged.

[0039] The high-pressure pressure valve provided by the embodiment has the advantages that the static core 1, the dynamic core 2, the push rod 3, the valve seat 4, the valve core 5, the reset spring 6, and the guide assembly 7 are arranged, the push rod 3 is slidably arranged in the static core 1, the valve seat 4 and the dynamic core 2 are arranged at both ends of the static core 1, the dynamic core 2 is connected with one end of the push rod 3, the other end of the push rod 3 extends into the valve channel 41 in the valve seat 4, the valve core 5 is arranged in the valve channel 41 and in contact with the push rod 3, the reset spring 6 is arranged at the end of the push rod 3 away from the valve seat 4 and abuts against the dynamic core 2, and the guide assemblies 7 are uniformly distributed between the dynamic core 2 and the static core 1, each guide assembly 7 includes a guide column 71 and a guide notch 72, the guide column 71 is arranged on the static core 1 and along the axial direction of the push rod 3, and the guide notch 72 is arranged on the dynamic core 2 and cooperates with the guide column 71, so that the dynamic core 2 can be guided through the guide column 71 and the guide notch 72 during movement, the stability of the movement of the dynamic core 2 is maintained, the influence of the impact of the high-pressure oil on the dynamic core 2 is reduced, the cooperation effect of the dynamic core 2 and the static core 1 is better, the driving stability is better, the use performance of the high-pressure pressure valve is better guaranteed, and the service life of the high-pressure pressure valve is prolonged.

[0040] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A high-pressure pressure valve with stable driving, comprising a static core, a dynamic core, a push rod, a valve seat, a valve core and a reset spring, a coil assembly is arranged in the static core, the push rod is arranged in the static core and is arranged in sliding mode, the valve seat is arranged at one end of the static core, the dynamic core is arranged at the end of the static core away from the valve seat and is fixedly connected with the push rod, a valve channel is arranged in the valve seat, a throttling opening is arranged in the valve channel, one end of the push rod extends to the throttling opening in the valve channel, the valve core is arranged in the valve channel and selectively contacts the push rod at the throttling opening, oil inlet holes and oil outlet holes which communicate with the valve channel are respectively arranged on the valve seat and at both sides of the throttling opening, the reset spring is arranged at one end of the push rod away from the valve core and abuts against the dynamic core, characterized in that, A plurality of guide assemblies are arranged between the static iron core and the dynamic iron core, and the guide assemblies are arranged in a ring array around the axis of the push rod; Each guide assembly comprises a guide post and a guide notch. The static iron core is provided with a concave cavity at one end away from the valve seat. A plurality of insertion holes are arranged in the axial direction of the push rod at the bottom of the concave cavity. Each insertion hole is provided with a guide post. One end of the guide post extends into the concave cavity. The dynamic iron core is arranged in the concave cavity. A plurality of guide notches are arranged in a ring array around the central axis of the dynamic iron core at the outer edge of the dynamic iron core. One end of the guide post extending into the concave cavity is inserted into the guide notch.

2. The drive-stable high-pressure pressure valve according to claim 1, characterized in that The static iron core provided with the concave cavity is provided with an inner cover. The return spring is arranged between the dynamic iron core and the inner cover.

3. The drive-stable high-pressure pressure valve according to claim 1, characterized in that Each guide assembly further comprises an adaptive contact assembly. The adaptive contact assembly comprises an arc-shaped contact piece, an extension rod, and an adaptive spring. A sliding hole is arranged in the radial direction of the dynamic iron core at each guide notch. One end of the extension rod is slidingly arranged in the sliding hole. The sliding hole is provided with an adaptive spring and abuts against the end of the extension rod. The other end of the extension rod is provided with the arc-shaped contact piece. The side of the arc-shaped contact piece away from the extension rod abuts against the corresponding guide post.

4. The drive-stable high-pressure pressure valve according to claim 3, characterized in that A first guide plane is arranged on the hole wall of the sliding hole in the axial direction. A second guide plane corresponding to the first guide plane is arranged on the outer wall of the extension rod in the axial direction.

5. The drive-stable high-pressure pressure valve according to claim 3, characterized in that The adaptive contact assembly further comprises a pad. The pad is arranged at the bottom of the sliding hole. One end of the adaptive spring away from the extension rod abuts against the pad.

6. The drive-stable high pressure pressure valve according to claim 1, characterized in that The end of the dynamic iron core away from the valve seat is provided with a protruding edge. One end of the return spring abutting against the dynamic iron core is sleeved on the protruding edge.

7. The drive-stable high pressure pressure valve according to claim 1, characterized in that An outer cover is further provided. The outer cover is a plastic part. The outer cover is sleeved on the end of the static iron core provided with the concave cavity. The outer cover is provided with a plug-in connector. The wire connector of the coil assembly extends into the plug-in connector.

8. The drive-stable high pressure pressure valve according to claim 1, characterized in that The valve channel penetrates through both ends of the valve seat. The port of the end of the valve channel away from the static iron core forms an oil inlet hole. A plurality of oil outlet holes are arranged on the outer side wall of the end of the valve seat close to the static iron core. The oil outlet holes are arranged in a ring array around the axis of the valve seat.

9. The drive-stable high pressure pressure valve according to claim 1, characterized in that The valve core is a sphere. The orifice of the side of the throttle port close to the push rod is arranged in a trumpet shape. The push rod extends into the valve channel. The end surface of the push rod is provided with a spherical groove matched with the surface of the valve body.

10. The drive-stable high pressure pressure valve according to claim 1, characterized in that A filter screen is sleeved on the end of the valve seat close to the oil inlet hole. The filter screen is arranged in a barrel shape. The barrel opening of the filter screen is sleeved on the valve seat.

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