CN116677785B

CN116677785B - Combined high-temperature high-pressure valve

Info

Publication number: CN116677785B
Application number: CN202310967113.8A
Authority: CN
Inventors: 殷方方; 杜强; 靳卫华; 汪长青
Original assignee: Shangdong Zhongli High Pressure Valve Co ltd
Current assignee: Shangdong Zhongli High Pressure Valve Co ltd
Priority date: 2023-08-03
Filing date: 2023-08-03
Publication date: 2023-10-20
Anticipated expiration: 2043-08-03
Also published as: CN116677785A

Abstract

The application relates to the field of valves, and provides a combined high-temperature high-pressure valve which comprises a valve body, wherein one side of the valve body is connected with a connector, and the connector is connected with an induction assembly; the valve body comprises a valve body, a valve head and a sealing part, wherein an adjusting assembly is arranged on the valve head and connected with a mounting plate, a miniature motor is connected to the mounting plate, a rotating rod is connected to a power shaft of the miniature motor, and the rotating rod extends into the valve body. When the valve is used, the sensing assembly is utilized to sense the material speed at one end of the feed inlet, so that the opening and closing of the valve can be adjusted according to the requirement, the flow speed of the material in the valve can be automatically adjusted, the stability of the material flowing is higher, and in addition, the opening and closing degree of the valve can be manually adjusted through the adjusting assembly.

Description

Combined high-temperature high-pressure valve

Technical Field

The application relates to the field of valves, in particular to a combined high-temperature and high-pressure valve.

Background

The valve is a pipeline connecting piece for switching a pipeline, controlling the flow direction, adjusting and controlling the conveying time of working media. In practice, valves control the delivery of fluids, including liquids and gases. In the process of conveying the fluid, the fluid often needs to be heated, so that the materials conveyed by the valve are in a high-temperature and high-pressure state.

In the prior art, in order to realize the industrial demand, the valve is required to realize millisecond-level switching, in some known technical schemes, a rotatable quick valve seat and a quick valve body are adopted, but in a closed state, the valve is in a high-pressure state, the pressure born by the quick valve seat and the quick valve body is larger, so that the tightness between the quick valve seat and the quick valve body is reduced, and the leakage phenomenon is easy to generate.

For this purpose, we propose a combined high temperature and high pressure valve.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the application provides a combined high-temperature high-pressure valve, which solves the technical problem that a quick valve seat and a quick valve body are easy to leak.

Technical proposal

In order to achieve the above purpose, the application is realized by the following technical scheme:

the combined high-temperature high-pressure valve comprises a valve body, wherein one side of the valve body is connected with a connector, and the connector is connected with an induction assembly;

the valve body comprises a valve body, a valve head and a sealing part, an adjusting assembly is arranged on the valve head, the adjusting assembly is connected with a mounting plate, a miniature motor is connected to the mounting plate, a power shaft of the miniature motor is connected with a rotating rod, and the rotating rod extends into the valve body;

the sealing part comprises an inner circle and an outer circle, the rotating rod is connected with the inner circle, a circular groove is formed in the upper side of the outer circle, the circular groove is in a convex shape, the inner circle is clamped into the circular groove and is movably sealed with the circular groove, a through hole is formed in the side wall of the inner circle, an opening is formed in the bottom wall of the circular groove, and the through hole corresponds to the position of the opening;

the top wall of the valve body is connected with a first clamping piece, a clamping ring is arranged in the valve body, the clamping ring is sleeved on the rotating rod, and a second clamping piece is arranged on the outer ring;

the upper side wall of the clamping ring is provided with a first clamping groove matched with the first clamping piece, and the lower side wall of the clamping ring is provided with a second clamping groove matched with the second clamping piece;

when the first clamping piece and the second clamping piece are arranged to rotate, the first clamping piece is clamped into the first clamping groove, and the second clamping piece is separated from the second clamping groove; or the first clamping piece is separated from the first clamping groove, and the second clamping piece is clamped into the first clamping groove.

In a further embodiment, the first clamping piece comprises a first connecting portion, the first connecting portion is connected with a first bending portion, the first bending portion bends along the direction of the first clamping groove, and the first bending portion is connected with a first arc-shaped portion;

the first clamping groove comprises a first notch, an arc-shaped first clamping part is arranged on the inner wall of the first notch, the circle center where the first clamping part is located on the vertical axis of the rotating rod, the first arc-shaped part is arranged to enter the first notch, and when the clamping ring rotates, the first arc-shaped part is clamped into the first clamping part.

In a further embodiment, the second clamping piece comprises a second connecting part, the second connecting part is connected with a second bending part, the second bending part bends along the direction of the second clamping groove, and the second bending part is connected with a second arc-shaped part;

the second clamping groove comprises a second notch, an arc-shaped second clamping part is arranged on the inner wall of the second notch, the circle center where the second clamping part is located on the vertical axis of the rotating rod, the second arc-shaped part is arranged to enter the second notch, and the second clamping part is clamped when the clamping ring rotates.

In a further embodiment, the adjusting assembly comprises a driving motor, the driving motor is connected with a ball screw, a sleeve matched with the ball screw is fixedly connected to the valve head, and the ball screw penetrates through the sleeve and is connected with the mounting plate.

In a further embodiment, the induction component comprises a mounting groove, the mounting groove is mounted on the side wall of the joint and is communicated with the joint, a wind wheel is arranged in the mounting groove, one end of the wind wheel is connected with an induction shaft, the induction shaft extends out of the mounting groove and is movably sealed with the joint of the mounting groove, and a rotating speed sensor is further connected to the induction shaft;

the rotating speed sensor is electrically connected with the driving motor;

the control part comprises a first working module and a second working module;

the first work module includes:

acquiring the real-time rotating speed detected by the rotating speed sensor in real time;

if the real-time rotating speed is greater than the preset rotating speed, controlling the driving motor to rotate positively to drive the ball screw and the mounting plate to move downwards, and reducing the opening between the valve body and the sealing part;

if the real-time rotating speed is smaller than the preset rotating speed, the driving motor is controlled to rotate reversely, the ball screw and the mounting plate are driven to move upwards, and the opening between the valve body and the sealing part is enlarged.

In a further embodiment, the second working module includes:

adjusting the sealing part and the valve body to a sealing state;

if the real-time rotating speed is greater than the preset rotating speed, controlling the micro motor to rotate at a low speed in a low gear;

and if the real-time rotating speed is greater than the preset rotating speed, controlling the micro motor to rotate at a high speed in a high gear.

In a further embodiment, the sealing module is configured to enable the snap ring to be clamped with the first clamping piece when the first working module works;

and when the second working module works, the clamping ring is clamped with the second clamping piece.

In a further embodiment, a speed regulator is provided on the miniature motor.

Advantageous effects

The application provides a combined high-temperature high-pressure valve. Compared with the prior art, the method has the following beneficial effects:

1. the material speed of feed inlet one end can be responded to the response subassembly to the size of valve switching is adjusted as required, and the velocity of flow of material in the valve of can automatically regulated like this makes the stability of material flow higher, in addition, through adjusting part, also can manual regulation valve's switching degree.

2. Through the effect of first joint spare and second joint spare, can restrict the position of snap ring respectively, when needs open whole valve like this, can make the whole quick valve that passes through of material. When the valve is required to be opened and stopped periodically and rapidly, the sealing part is closed, the clamping ring is connected with the first clamping piece, the through hole and the opening are opened, the inner circle is driven to rotate, and when the through hole and the opening are communicated, air flow can pass rapidly, so that the rapid opening and stopping are realized. And when need not to open fast and stop, be connected second joint spare with interior circle and outer lane, interior circle and outer lane can not receive too big pressure like this to guarantee the safety of valve.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of the present application.

Fig. 2 is a schematic view of a connection structure of the sealing portion and the rotation lever.

Fig. 3 is a schematic side view of a sensing assembly.

Fig. 4 is a schematic view of the connection structure of the micro motor, the mounting plate and the sealing part.

Fig. 5 is a schematic view of the internal structure of the valve body.

Fig. 6 is a schematic view of the connection structure of the valve head and the valve body.

Fig. 7 is a schematic connection diagram of the second clamping member and the second clamping groove.

Fig. 8 is a schematic diagram of a positional relationship between the first clamping member and the first clamping groove.

Fig. 9 is a schematic diagram of a connection structure between the second clamping member and the sealing plate.

Fig. 10 is a schematic connection diagram of the first clamping member and the first clamping groove.

Fig. 11 is a schematic block diagram of the control section.

The reference numerals in the figures are:

10 valve body, 11 joint, 12 valve body, 13 valve head, 14 sealing part, 15 mounting plate, 16 miniature motor, 17 rotating rod, 18 speed regulator;

the device comprises a 20 induction component, a 21 mounting groove, a 22 wind wheel, a 23 induction shaft and a 24 rotation speed sensor;

30 adjusting component, 31 driving motor, 32 ball screw and 33 suite

40 inner circles, 41 outer circles, 42 circular grooves, 43 through holes, 44 openings and 45 clamping rings;

50 first clamping pieces, 51 first clamping grooves, 52 first connecting parts, 53 first bending parts, 54 first arc parts, 55 first notch and 56 first clamping parts;

the second clamping piece 60, the second clamping groove 61, the second connecting part 62, the second bending part 63, the second arc-shaped part 64, the second notch 65 and the second clamping part 66;

70 control part, 71 first working module, 72 second working module, 73 sealing module.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The embodiment of the application solves the problem that the high-speed valve seat and the high-speed valve body 10 are subjected to high pressure and are easy to cause poor tightness by providing the combined high-temperature and high-pressure valve, realizes multiple switching modes when in use, plays a good role in protecting the high-speed valve seat and the high-speed valve body 10, and prolongs the service life.

The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:

the snap ring 45 can be clamped on the through hole 43 by the first clamping member 50 and the second clamping member 60, thereby relieving the pressure applied to the inner circle 40.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Referring to FIGS. 1-11

The combined high-temperature high-pressure valve comprises a valve body 10, wherein one side of the valve body 10 is connected with a joint 11, and the joint 11 is connected with an induction assembly 20;

the valve body 10 comprises a valve body 12, a valve head 13 and a sealing part 14, wherein an adjusting assembly 30 is arranged on the valve head 13, the adjusting assembly 30 is connected with a mounting plate 15, the mounting plate 15 is connected with a micro motor 16, a power shaft of the micro motor 16 is connected with a rotating rod 17, and the rotating rod 17 extends into the valve body 12;

the sealing part 14 comprises an inner circle 40 and an outer circle 41, the rotating rod 17 is connected with the inner circle 40, a circular groove 42 is formed in the upper side of the outer circle 41, the circular groove 42 is in a convex shape, the inner circle 40 is clamped into the circular groove 42 and is movably sealed with the circular groove 42, a through hole 43 is formed in the side wall of the inner circle 40, an opening 44 is formed in the bottom wall of the circular groove 42, and the through hole 43 corresponds to the opening 44 in position;

referring to fig. 7-10, a first clamping member 50 is connected to the top wall of the valve body 12, a clamping ring 45 is disposed in the valve body 12, the clamping ring 45 is sleeved on the rotating rod 17, and a second clamping member 60 is disposed on the outer ring 41;

the upper side wall of the clamping ring 45 is provided with a first clamping groove 51 matched with the first clamping piece 50, and the lower side wall of the clamping ring 45 is provided with a second clamping groove 61 matched with the second clamping piece 60;

when the first clamping member 50 and the second clamping member 60 are set to rotate the clamping ring 45, the first clamping member 50 is clamped into the first clamping groove 51, and the second clamping member 60 is separated from the second clamping groove 61; or the first clamping piece 50 is separated from the first clamping groove 51, and the second clamping piece 60 is clamped into the first clamping groove 51.

In a further embodiment, the first clamping member 50 includes a first connecting portion 52, the first connecting portion 52 is connected to a first bending portion 53, the first bending portion 53 is bent along the direction of the first clamping groove 51, and the first bending portion 53 is connected to a first arc portion 54;

the first clamping groove 51 comprises a first notch 55, an arc-shaped first clamping portion 56 is formed in the inner wall of the first notch 55, the circle center of the first clamping portion 56 is located on the vertical axis of the rotating rod 17, the first arc-shaped portion 54 is arranged to enter the first notch 55, and when the clamping ring 45 rotates, the first arc-shaped portion is clamped into the first clamping portion 56.

In a further embodiment, the second clamping member 60 includes a second connecting portion 62, the second connecting portion 62 is connected to a second bending portion 63, the second bending portion 63 is bent along the direction of the second clamping groove 61, and the second bending portion 63 is connected to a second arc portion 64;

the second clamping groove 61 comprises a second notch 65, an arc-shaped second clamping portion 66 is formed in the inner wall of the second notch 65, the center of a circle where the second clamping portion 66 is located on the vertical axis of the rotating rod 17, and the second arc-shaped portion 64 is arranged to enter the second notch 65 and is clamped into the second clamping portion 66 when the clamping ring 45 rotates.

Referring to fig. 4, in a further embodiment, the adjusting assembly 30 includes a driving motor 31, the driving motor 31 is connected with a ball screw 32, a sleeve 33 matched with the ball screw 32 is fixedly connected to the valve head 13, and the ball screw 32 penetrates through the sleeve 33 and is connected with the mounting plate 15.

The driving motor 31 drives the ball screw 32 to rotate, but the sleeve 33 is not moved and fixedly connected, so that the ball screw 32 and the driving motor 31 are controlled to move up and down under the action of threads, and meanwhile, the ball screw 32 drives the mounting plate 15 to move up and down.

In a further embodiment, the sensing assembly 20 includes a mounting groove 21, the mounting groove 21 is mounted on a side wall of the joint 11 and is communicated with the joint 11, a wind wheel 22 is disposed in the mounting groove 21, one end of the wind wheel 22 is connected with a sensing shaft 23, the sensing shaft 23 extends out of the mounting groove 21 and is movably sealed at a joint with the mounting groove 21, and a rotation speed sensor 24 is further connected to the sensing shaft 23;

the air flow in the interface can drive the wind wheel 22 to rotate, and when the air flow is more, the rotating speed is high, and when the air flow is less, the rotating speed is low, so that the arrangement can ensure that the flow speed of the air flow is measured.

The rotational speed sensor 24 can accurately identify the rotational speed of the wind wheel 22.

The rotation speed sensor 24 is electrically connected with the driving motor 31;

further comprising a control section 70, the control section 70 comprising a first work module 71 and a second work module 72;

the first working module 71 includes:

acquiring the real-time rotating speed detected by the rotating speed sensor 24 in real time;

if the real-time rotation speed is greater than the preset rotation speed, the driving motor 31 is controlled to rotate positively to drive the ball screw 32 and the mounting plate 15 to move downwards, so as to reduce the opening 44 between the valve body 12 and the sealing part 14;

if the real-time rotation speed is less than the preset rotation speed, the driving motor 31 is controlled to rotate reversely to drive the ball screw 32 and the mounting plate 15 to move upwards, so as to enlarge the opening 44 between the valve body 12 and the sealing part 14.

By setting different working modules, different demands of the valve are met.

In a further embodiment, the second work module 72 includes:

adjusting the sealing portion 14 and the valve body 12 to a sealed state;

if the real-time rotation speed is greater than the preset rotation speed, the micro motor 16 is controlled to rotate at a low gear and a low speed;

if the real-time rotational speed is greater than the preset rotational speed, the micro-motor 16 is controlled to rotate at a high speed in a high gear.

In a further embodiment, a sealing module 73, where the sealing module 73 is configured to make the snap ring 45 engage with the first engaging member 50 when the first working module 71 works;

when the second working module 72 works, the clamping ring 45 is clamped with the second clamping piece 60.

By providing the sealing module 73, a sealing effect can be ensured, and also the stability of the air flow can be ensured.

In a further embodiment, the micro-machine 16 is provided with a governor 18. The speed regulator 18 can be used to regulate the rotation speed of the micro motor 16.

In use, the first working module 71 or the second working module 72 is adjusted as required.

When the first working module 71 works, the sealing part 14 is clamped with the clamping ring 45 through the second clamping piece 60, so that the through hole 43 and the opening 44 can be blocked, the height of the sealing part 14 is adjusted by the adjusting assembly 30, and the discharging speed is adjusted through the height of the sealing part 14 in the valve body 12 when materials pass through the valve.

If the real-time rotation speed is greater than the preset rotation speed, the driving motor 31 is controlled to rotate positively to drive the ball screw 32 and the mounting plate 15 to move downwards, so as to reduce the opening 44 between the valve body 12 and the sealing part 14; thus, the speed of the interface feeding is increased, the opening 44 between the valve body 12 and the sealing part 14 is reduced, the discharging speed is reduced, and the speed of the discharging is increased due to high pressure, so that the discharging stability is controlled.

Thus the rate of feed to the mouthpiece is slowed and the opening 44 between the valve body 12 and the seal 14 is enlarged to speed up the rate of discharge and thereby ensure that the material is discharged at a relatively uniform rate.

When the first working module 71 needs to be replaced to the second working module 72, the adjusting assembly 30 is utilized to drive the mounting plate 15, the micro motor 16, the rotating rod 17 and the sealing part 14 to move, and drive the clamping ring 45 to move until the first clamping interface at the upper end of the clamping ring 45 contacts the first clamping groove 51, and the first connecting part 52, the first bending part 53 and the first arc part 54 are clamped into the first notch 55. At this time, the second clamping member 60 is clamped into the second clamping groove 61, and in particular, the second arc-shaped portion 64 is located in the second clamping portion 66.

Then the micro motor 16 drives the rotating rod 17 to rotate, the first arc-shaped portion 54 gradually enters the first clamping portion 56 to clamp the clamping ring 45, meanwhile, the second arc-shaped portion 64 gradually breaks away from the second clamping portion 66 and enters the second notch 65 until the second arc-shaped portion 64 is completely separated from the second clamping portion 66, then the adjusting assembly 30 is utilized to drive the sealing portion 14 to move downwards, the second arc-shaped portion 64 can be separated from the second notch 65, and the first arc-shaped portion 54 is limited with the first clamping portion 56, so that the clamping ring 45 is left at the top of the valve body 12, and the through hole 43 is exposed in the valve body 12.

Then, the sealing part 14 and the ventilation part in the valve body 12 are sealed, so that when the micro motor 16 drives the rotating rod 17 to rotate, the rotating rod 17 drives the inner circle 40 to rotate, the through hole 43 on the inner circle 40 rotates, and then the through hole can be gradually communicated with the opening 44, and the valve body is closed again, so that the rapid switching effect can be realized.

In addition, a sealing layer such as a rubber layer or the like may be provided at the lower end of the retainer ring 45.

When the second working module 72 is to be switched to the first working module 71, the snap ring 45 is only required to be reversely rotated by re-locking the first locking member 50 and the first locking groove 51, and the second locking member 60 and the second locking groove 61.

By the arrangement, when the through holes 43 and the openings 44 are not needed, the openings 44 are blocked, the air pressure action of the inner circle 40 and the outer circle 41 is lightened, the damage caused by high pressure is avoided, and the service life of the valve is prolonged.

In summary, compared with the prior art, the method has the following beneficial effects:

the material speed of feed inlet one end can be responded to the response subassembly 20 to the size of valve switching is adjusted as required, the velocity of flow of material in the valve of can automatically regulated like this, makes the stability of material flow higher, in addition, through adjusting part 30, also can manual regulation valve's switching degree.

The positions of the clamping rings 45 can be respectively limited by the action of the first clamping piece 50 and the second clamping piece 60, so that when the whole valve needs to be opened, materials can completely pass through the valve quickly. When the valve is required to be opened or closed periodically and rapidly, the sealing part 14 is closed, the clamping ring 45 is connected with the first clamping piece 50, and then the through hole 43 and the opening 44 are opened, so that the inner circle 40 is driven to rotate, and when the through hole 43 and the opening 44 are communicated, air flow can pass rapidly, so that rapid opening or closing is realized. And when the quick start and stop is not needed, the second clamping piece 60 is connected with the inner circle 40 and the outer circle 41, so that the inner circle 40 and the outer circle 41 cannot bear too great pressure, and the safety of the valve is ensured.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. The combined high-temperature high-pressure valve is characterized by comprising a valve body (10), wherein one side of the valve body (10) is connected with a joint (11), and the joint (11) is connected with an induction component (20);

the valve body (10) comprises a valve body (12), a valve head (13) and a sealing part (14), wherein an adjusting assembly (30) is arranged on the valve head (13), the adjusting assembly (30) is connected with a mounting plate (15), the mounting plate (15) is connected with a micro motor (16), a power shaft of the micro motor (16) is connected with a rotating rod (17), and the rotating rod (17) extends into the valve body (12);

the sealing part (14) comprises an inner circle (40) and an outer circle (41), the rotating rod (17) is connected with the inner circle (40), a circular groove (42) is formed in the upper side of the outer circle (41), the circular groove (42) is in a convex shape, the inner circle (40) is clamped into the circular groove (42) and is movably sealed with the circular groove (42), a through hole (43) is formed in the side wall of the inner circle (40), an opening (44) is formed in the bottom wall of the circular groove (42), and the through hole (43) corresponds to the opening (44);

the top wall of the valve body (12) is connected with a first clamping piece (50), a clamping ring (45) is arranged in the valve body (12), the clamping ring (45) is sleeved on the rotating rod (17), and a second clamping piece (60) is arranged on the outer ring (41);

the upper side wall of the clamping ring (45) is provided with a first clamping groove (51) matched with the first clamping piece (50), and the lower side wall of the clamping ring (45) is provided with a second clamping groove (61) matched with the second clamping piece (60);

when the first clamping piece (50) and the second clamping piece (60) are arranged to rotate, the first clamping piece (50) is clamped into the first clamping groove (51), and the second clamping piece (60) is separated from the second clamping groove (61);

the first clamping piece (50) comprises a first connecting part (52), the first connecting part (52) is connected with a first bending part (53), the first bending part (53) is bent along the direction of the first clamping groove (51), and the first bending part (53) is connected with a first arc-shaped part (54);

the first clamping groove (51) comprises a first notch (55), an arc-shaped first clamping part (56) is formed in the inner wall of the first notch (55), the center of a circle of the first clamping part (56) is located on the vertical axis of the rotating rod (17), and the first arc-shaped part (54) is arranged to enter the first notch (55) and is clamped into the first clamping part (56) when the clamping ring (45) rotates;

the second clamping piece (60) comprises a second connecting part (62), the second connecting part (62) is connected with a second bending part (63), the second bending part (63) is bent along the direction of the second clamping groove (61), and the second bending part (63) is connected with a second arc-shaped part (64);

the second clamping groove (61) comprises a second notch (65), an arc-shaped second clamping portion (66) is formed in the inner wall of the second notch (65), the center of a circle where the second clamping portion (66) is located on the vertical axis of the rotating rod (17), and the second arc-shaped portion (64) is arranged to enter the second notch (65) and is clamped into the second clamping portion (66) when the clamping ring (45) rotates.

2. A valve according to claim 1, wherein the regulating assembly (30) comprises a driving motor (31), the driving motor (31) is connected with a ball screw (32), a sleeve (33) matched with the ball screw (32) is fixedly connected to the valve head (13), and the ball screw (32) penetrates through the sleeve (33) and is connected with the mounting plate (15).

3. A valve according to claim 2, wherein the sensing assembly (20) comprises a mounting groove (21), the mounting groove (21) is mounted on the side wall of the joint (11) and is communicated with the joint (11), a wind wheel (22) is arranged in the mounting groove (21), one end of the wind wheel (22) is connected with a sensing shaft (23), the sensing shaft (23) extends out of the mounting groove (21) and is movably sealed at the joint with the mounting groove (21), and a rotating speed sensor (24) is further connected to the sensing shaft (23);

the rotation speed sensor (24) is electrically connected with the driving motor (31);

the control device further comprises a control part (70), wherein the control part (70) comprises a first working module (71) and a second working module (72);

the first work module (71) comprises:

acquiring the real-time rotating speed detected by a rotating speed sensor (24) in real time;

if the real-time rotating speed is greater than the preset rotating speed, the driving motor (31) is controlled to rotate positively to drive the ball screw (32) and the mounting plate (15) to move downwards, and the opening (44) between the valve body (12) and the sealing part (14) is reduced;

if the real-time rotating speed is smaller than the preset rotating speed, the driving motor (31) is controlled to rotate reversely, the ball screw (32) and the mounting plate (15) are driven to move upwards, and the opening (44) between the valve body (12) and the sealing part (14) is enlarged.

4. A valve as claimed in claim 3, wherein said second working module (72) comprises:

adjusting the sealing part (14) and the valve body (12) to a sealing state;

if the real-time rotating speed is greater than the preset rotating speed, controlling the micro motor (16) to rotate at a low speed in a low gear;

and if the real-time rotating speed is greater than the preset rotating speed, controlling the micro motor (16) to rotate at a high speed in a high gear.

5. The valve of claim 4, further comprising:

a seal module (73), wherein the seal module (73) is configured to enable the clamping ring (45) to be clamped with the first clamping piece (50) when the first working module (71) works;

when the second working module (72) works, the clamping ring (45) is clamped with the second clamping piece (60).

6. Valve according to claim 4 or 5, characterized in that the micro-machine (16) is provided with a governor (18).