CN117847297A - Valve core driving mechanism and double-flashboard gate valve - Google Patents

Abstract

The invention relates to the technical field of valve driver design, in particular to a valve core driving mechanism and a double-flashboard gate valve. According to the valve core driving mechanism and the double-gate valve, the driving mechanism used by the valve core of the existing double-gate valve is improved, and the valve core structure of the double-gate valve is redesigned, so that the valve core is fixed in a pushing mode of being divided into two steps by utilizing the newly designed driving mechanism, the valve core is pushed to be in place in the first step, the sealing valve plate is pushed to be deeply pushed into the matched sleeve in the second step, the sealing contact area of the surface of the sealing valve plate is increased, meanwhile, the influence caused by local abrasion of the surface of the valve body is eliminated, the problem that the contact mode of the existing valve plate and the valve body is simple and internal leakage is easy to occur is solved, and the sealing effect of the valve plate on the valve body can be effectively improved, so that the internal leakage phenomenon of the valve is eliminated.

Description

Valve core driving mechanism and double-flashboard gate valve

Technical Field

The invention relates to the technical field of valve driver design, in particular to a valve core driving mechanism and a double-flashboard gate valve.

Background

The gate valve is a type of valve that uses the vertical movement of the valve elements relative to each other with respect to the valve body to shut off the fluid flow path within the valve body to achieve valve control. Because the gate valve mainly relies on the edge of the gate plate to be in contact with the inner edge of the valve body in the process of cutting off the fluid flow passage for sealing, the gap between the edge of the gate plate and the valve body after repeated friction is larger and larger, so that the sealing effect is reduced to cause the leakage of the valve body.

The existing gate valve for improving the internal leakage phenomenon adopts two methods: the side face of the gate valve is changed into an inclined face, so that when the gate valve is closed, the valve plate can be extruded on the inclined face under the action of downward extrusion force, so that the contact face is tightly attached, but the sealing effect provided by the way is limited, and the leakage influence cannot be eliminated by the way after obvious defect occurs in the sealing area of the valve plate; the other is to seal the pipelines at two ends of the valve body respectively by adopting the double valve plates, so that when one valve plate fails, the other valve plate still has a sealing effect, and therefore, the reliability of the device can be improved to a certain extent.

If a novel valve core driving mechanism can be developed, after the valve plate enters the matching position, the valve plate can be further inserted into the side surface of the valve body, so that the contact area for sealing on the valve plate is increased, the influence caused by partial abrasion of the edge of the valve plate is eliminated, and the sealing effect of the valve plate can be effectively improved.

Therefore, a valve core driving mechanism and a double-flashboard gate valve are needed to solve the problem that the existing valve plate is easy to leak in a contact mode with a valve body, and can effectively improve the sealing effect of the valve plate on the valve body so as to eliminate the leak phenomenon in the valve.

Disclosure of Invention

The invention aims to solve the problem that the existing valve plate is easy to leak in a contact mode with a valve body, and provides a valve core driving mechanism and a double-flashboard gate valve, which can effectively improve the sealing effect of the valve plate on the valve body so as to eliminate the phenomenon of leak in the valve.

In order to achieve the above purpose, the present invention provides the following technical solutions: a valve core driving mechanism and a double-flashboard gate valve comprise:

the device comprises a shell, wherein an installation cavity is formed in the shell, a rotary driving device is arranged in the installation cavity, a driving screw is arranged in the installation cavity and is rotatably installed with the shell through a rotating seat, and a driven wheel meshed with the output end of the driving device is fixedly installed at the top of the driving screw;

the lifting sleeve is slidably mounted with the shell, the lifting sleeve is in threaded connection with the driving screw, a sliding sleeve sliding along the lifting sleeve is connected in a sliding cavity of the lifting sleeve through an extrusion spring, a bottom connecting frame is fixedly mounted at the bottom of the sliding sleeve, a valve core is arranged at the bottom of the bottom connecting frame and comprises a limiting connecting frame fixed with the bottom of the bottom connecting frame, valve plate frames are arranged at two ends of the limiting connecting frame, a closed valve plate is slidably mounted in each valve plate frame, an inclined sliding rod is fixed at the upper end of the closed valve plate, and a pushing block used for driving the inclined sliding rod to move is fixed at the bottom of the lifting sleeve;

the controller is fixedly arranged on the shell and is electrically connected with the rotary driving device, the lifting sleeve is fixedly provided with a detection matching rod, and a displacement detection sensor electrically connected with the controller is fixedly arranged between the detection matching rod and the shell.

Preferably, the top integrated into one piece of slip cap has a top spacing ring, and the bottom integrated into one piece of lift sleeve has a bottom spacing ring that is used for spacing top spacing ring and prevents slip cap roll-off lift sleeve.

Preferably, the shell is fixedly provided with a display, the display is electrically connected with the controller and used for displaying the working state of the controller, and the shell is internally and fixedly provided with a pull handle.

Preferably, the end fixed mounting of seal valve plate has the connection push pedal, and two connection push pedals are connected with spacing link through the pullback spring, the top and the slant slide bar of connection push pedal pass through bolt fixed mounting, and have seted up the slide rail on the spacing link, the connection push pedal slides along the slide rail through first sliding seat.

Preferably, the surface fixed mounting of casing has the fin of inserting the installation intracavity, and the fin is wave or cavity, be provided with on the casing and be used for detecting the installation intracavity temperature and with controller electric connection's temperature detection sensor, and fixed mounting has the alarm with controller electric connection on the casing.

Preferably, the shell is provided with a matching guide groove, and the lifting sleeve is fixedly provided with a matching guide protrusion which is in sliding fit with the matching guide groove.

Preferably, the rotary driving device comprises a driving motor fixedly installed in the installation cavity, the output end of the driving motor is provided with a driving wheel, a first gear and a second gear are installed in the installation cavity in a rotating mode through a bearing, the first gear and the second gear are coaxially and fixedly installed, the first gear is meshed with the driving wheel and connected with a driven wheel in a meshed mode, the transmission ratio of the driving wheel to the first gear is 3:1, the gear ratio of the first gear to the second gear is 3:1, the transmission ratio of the second gear to the driven wheel is 1:1, and the driving motor is electrically connected with the controller.

Preferably, the bottom connecting frame is provided with a guide sliding rod along the left-right direction, and the tail end of the inclined sliding rod is integrally formed with a second sliding seat sliding along the guide sliding rod.

Preferably, a guiding slideway is arranged at the bottom of the shell, and the top of the inclined slide bar slides along the guiding slideway.

The utility model provides a two flashboard gate valves, includes case actuating mechanism and case, the case sets up in the valve body, and the valve body is in the department of interfacing with the valve plate frame fixed mounting has the cooperation sleeve pipe, fixed mounting has the sealed spring energy storage sealing washer with cooperation sleeve pipe's inner wall on the closure valve plate, and the outer wall surface of closure valve plate is provided with the rubber sleeve with cooperation sleeve pipe inner wall face is sealed, thereby the tip fixed mounting of closure valve plate has the edge to be provided with the guide slope and guides the guide block that the closure valve plate got into in the cooperation sleeve pipe, and the intraductal integrated into one piece of cooperation sleeve has spacing and with the annular bulge of guide block seal with the side of guide block.

Compared with the prior art, the invention has the beneficial effects that:

according to the valve core driving mechanism and the double-gate valve, the driving mechanism used by the valve core of the existing double-gate valve is improved, and the valve core structure of the double-gate valve is redesigned, so that the valve core is fixed in a pushing mode formed by two steps by utilizing the lifting sleeve, the extrusion spring, the sliding sleeve, the bottom connecting frame, the pushing block and the inclined sliding rod, the valve core is pushed to be in place in the first step, the sealing valve plate is pushed to be deeper into the matched sleeve in the second step, the sealing contact area of the surface of the sealing valve plate is increased, the influence caused by local abrasion of the surface of the valve body is eliminated, the problem that the contact mode of the existing valve plate and the valve body is simple and internal leakage is easy to occur is solved, and the sealing effect of the valve plate on the valve body can be effectively improved, so that the internal leakage phenomenon of the valve is eliminated.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a cross-sectional view of the internal structure of the housing of the present invention;

FIG. 4 is a schematic illustration of the connection of the lift sleeve and the valve core of the present invention;

FIG. 5 is a cross-sectional view of the connection of the lifting sleeve and the diagonal slide bar of the present invention;

fig. 6 is a schematic structural view of the valve core of the present invention.

In the figure: 1. a housing; 2. a valve core; 201. valve plate frame; 202. closing the valve plate; 203. the connecting push plate; 204. a pull-back spring; 205. a limit connecting frame; 3. a rotation driving device; 301. a driving motor; 302. a driving wheel; 303. a second gear; 304. a first gear; 4. a temperature detection sensor; 5. a controller; 6. a display; 7. a heat sink; 8. a pull handle; 9. a valve body; 10. a pushing block; 11. an oblique slide bar; 12. lifting the sleeve; 13. driven wheel; 14. a rotating seat; 15. a guide slide bar; 16. a guide slide; 17. a displacement detection sensor; 18. a mounting cavity; 19. a slide rail; 20. a first sliding seat; 21. a spring energy storage sealing ring; 22. a guide block; 23. detecting a matching rod; 24. a bottom connecting frame; 25. a second sliding seat; 26. extruding a spring; 27. a sliding chamber; 28. a top stop collar; 29. sliding the sleeve; 30. a bottom stop collar; 31. matching the sleeve; 32. a mating guide slot; 33. a mating guide projection; 34. the screw is driven.

Detailed Description

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example 1

Referring to fig. 1 to 6, the present invention provides a technical solution: a valve core driving mechanism and a double-flashboard gate valve comprise:

1, referring to fig. 1 to 3, a mounting cavity 18 is provided in the housing 1, a rotary driving device 3 is provided in the mounting cavity, a driving screw 34 is provided in the mounting cavity 18, the driving screw 34 is rotatably mounted with the housing 1 through a rotating seat 14, a driven wheel 13 engaged with an output end of the driving device 3 is fixedly mounted on top of the driving screw 34, and the driving screw 34 capable of rotating is driven by rotation of the rotary driving device 3;

the lifting sleeve 12, please refer to fig. 2-5, the lifting sleeve 12 is slidably mounted with the housing 1, the lifting sleeve 12 is threadably mounted with the driving screw 34, the housing 1 is provided with a matching guiding groove 32, the lifting sleeve 12 is fixedly mounted with a matching guiding protrusion 33 slidably matched with the matching guiding groove 32, the sliding cavity 17 of the lifting sleeve 34 is connected with a sliding sleeve 29 sliding along the lifting sleeve 12 through a pressing spring 26, when the driving screw 34 rotates, the lifting sleeve 12 moves up and down along the matching guiding groove 32 under the driving of the driving screw 34, the up and down movement of the lifting sleeve 12 drives the sliding sleeve 29 to move up and down, the top of the sliding sleeve 29 is integrally formed with a top limiting ring 28, the bottom of the lifting sleeve 12 is integrally formed with a bottom limiting ring 30 for limiting the top limiting ring 28 and preventing the sliding sleeve 29 from sliding out of the lifting sleeve 12, the bottom of the sliding sleeve 29 is fixedly provided with a bottom connecting frame 24, the bottom of the bottom connecting frame 24 is provided with a valve core 2, the valve core 2 comprises a limit connecting frame 205 fixed with the bottom of the bottom connecting frame 24, both ends of the limit connecting frame 205 are provided with valve plate frames 201, a closed valve plate 202 is slidably arranged in each valve plate frame 201, the upper end of the closed valve plate 202 is fixedly provided with an inclined sliding rod 11, the bottom of the lifting sleeve 12 is fixedly provided with a pushing block 10 for driving the inclined sliding rod 11 to move, the bottom connecting frame 24 is provided with a guide sliding rod 15 along the left and right directions, the tail end of the inclined sliding rod 11 is integrally provided with a second sliding seat 25 sliding along the guide sliding rod 15, the tail end of the closed valve plate 202 is fixedly provided with a connecting push plate 203, and the two connecting push plates 203 are connected with the limit connecting frame 205 through a pull spring 204, the top of the connecting push plate 203 and the inclined slide rod 11 are fixedly arranged through bolts, the limit connecting frame 205 is provided with a slide rail 19, the connecting push plate 203 slides along the slide rail 19 through the first slide seat 20, when the lifting sleeve 12 moves downwards, the slide sleeve 29 is driven to move downwards, so as to drive the valve core 2 to push the bottom of the valve body 9, the valve plate frames 201 at the two ends of the valve core 2 move in place, then the lifting sleeve 12 continues to move, the valve core 2 cannot move downwards, the extrusion spring 26 is compressed, the distance between the lifting sleeve 12 and the limit connecting frame 205 is reduced, the push block 10 starts to move downwards along the inclined slide rod 11, the inclined slide rod 11 is extruded to move to two sides in the process of the downward movement of the push block 10, so that the inclined slide rod 11 drives the sealing valve plate 202 to move into the matching sleeve 31 along the valve plate frames 201 to seal the valve body 9, when the valve is required to be opened, the lifting sleeve 12 moves upwards under the driving of the driving screw 34, and the sealing valve plate 202 is clamped in the matching sleeve 31 and the extrusion spring 26 is still in a compressed state, so that the lifting sleeve 12 drives the pushing block 10 to move upwards, the pushing block 10 can push the inclined slide rod 11 to slide inwards, the sealing valve plate 202 slides out of the matching sleeve 31, then the extrusion spring 26 is separated from the compressed state, the lifting sleeve 2 moves upwards continuously to drive the valve core 2 to move upwards integrally so as to open the internal channel of the valve body 9, the valve body 9 not only can seal the end part of the matching sleeve 31 by adopting the valve plate frame 201 to match with the sealing valve plate 202 directly, but also can seal the sealing valve plate 202 inserted into the matching sleeve 31, the sealing effect is greatly improved, the occurrence of internal leakage is avoided, the operation method is simple, all the operations can be completed by only one driving motor 301, the structure in the equipment is simpler, and the overhaul and the maintenance are convenient;

referring to fig. 1 to 4, a controller 5, the controller 5 is fixedly mounted on a housing 1 and is electrically connected with a rotary driving device 3, a detection matching rod 23 is fixedly mounted on a lifting sleeve 12, a displacement detection sensor 17 electrically connected with the controller 5 is fixedly mounted between the detection matching rod 23 and the housing 1, a display 6 is fixedly mounted on the housing 1, the display 6 is electrically connected with the controller 5 and is used for displaying the working state of the controller 5, a pull handle 8 is fixedly mounted in the housing 1, and the upper position and the lower position of the lifting sleeve 12 can be detected through the displacement detection sensor 17, so that the controller 5 can judge whether a valve core 2 moves in place or not and send corresponding control signals to the rotary driving device 3;

referring to fig. 3 and 4, the rotary driving device 3 includes a driving motor 301 fixedly installed in the installation cavity 18, wherein an output end of the driving motor 301 is driven by a driving wheel 302, a first gear 304 and a second gear 303 are installed in the installation cavity 18 through bearings in a rotating manner, the first gear 304 and the second gear 303 are fixedly installed coaxially, the first gear 304 is meshed with the driving wheel 302, the second gear 303 is meshed with the driven wheel 13, a transmission ratio of the driving wheel 302 to the first gear 304 is 1:3, a gear ratio of the first gear 304 to the second gear 303 is 3:1, a transmission ratio of the second gear 303 to the driven wheel 13 is 1:1, the driving motor 301 is electrically connected with the controller 5, and a control signal of the controller 5 can be received by the driving motor 301 inside the rotary driving device 3, so that a rotation state of the driving screw 34 is adjusted through a speed reducing mechanism composed of the driving wheel 302, the driven wheel 13, the first gear 304 and the second gear 303, and up-down motion of the lifting sleeve 12 is driven by the driving screw 34, and control of the valve core 2 is achieved.

Example two

Referring to fig. 1 to 3, on the basis of the first embodiment, a heat sink 7 inserted into a mounting cavity 18 is fixedly installed on the surface of a housing 1, the heat sink 7 is in a wave shape or a hollow shape, a temperature detection sensor 4 for detecting the temperature in the mounting cavity 18 and electrically connected with a controller 5 is arranged on the housing 1, an alarm electrically connected with the controller 5 is fixedly installed on the housing 1, and the heat generated by a driving motor 301 during operation can be better emitted by arranging the heat sink 7 on the surface of the housing 1, so that the driving motor 301 can be in a normal operating temperature range, and when the temperature in the mounting cavity 18 is detected by the temperature detection sensor 4 to be no longer suitable for the operation of the driving motor 301, an alarm signal is sent by the alarm electrically connected with the controller 5, thereby notifying maintenance personnel to perform maintenance.

Example III

Referring to fig. 1, 2 and 6, on the basis of the second embodiment, the present invention further provides a dual gate valve, which includes a valve core driving mechanism and a valve core 2, wherein the valve core 2 is disposed in the valve body 9, the valve body 9 is fixedly mounted with a mating sleeve 31 at a butt joint position with the valve plate frame 201, the sealing valve plate 202 is fixedly mounted with a spring energy storage sealing ring 21 sealed with an inner wall of the mating sleeve 31, an outer wall surface of the sealing valve plate 202 is provided with a rubber sleeve sealed with an inner wall surface of the mating sleeve 31, an edge of the sealing valve plate 202 is fixedly mounted with a guiding slope so as to guide the sealing valve plate 202 to enter a guiding block 22 in the mating sleeve 31, and an annular protrusion limited by a side surface of the guiding block 22 and sealed with the guiding block 22 is integrally formed in the mating sleeve 31.

Example IV

On the basis of the third embodiment, the invention provides a use method of a valve core driving mechanism, which comprises the following steps:

step one: when the valve body 9 needs to be closed, a clockwise rotation command is given to the driving motor 301 through the controller 5, at this time, the rotation of the driving motor 301 drives the driving screw 34 to rotate, so that the lifting sleeve 12 is pressed downwards, during the downward movement of the lifting sleeve 12, because the resistance force of the valve core 2 is smaller than the thrust force of the pressing spring 26, the lifting sleeve 12 drives the valve core 2 positioned below the valve core 2 to move downwards, and because the side surface of the closing valve plate 202 is tensioned by the pull-back spring 204, the closing valve plate 202 will not slide during the downward movement of the valve core 2, then the bottom of the limit connecting frame 205 in the valve core 2 is propped against the inside of the valve body 9 and cannot move downwards continuously, at this time, the valve plate frame 201 and the closing valve plate 202 seal the side surface of the matched sleeve 3, at this time, in order to ensure the closing effect, at this time, the lifting sleeve 12 will continue to move downwards, meanwhile, the extrusion spring 29 in the sliding sleeve 29 will be compressed, so that the distance between the valve core 2 and the lifting sleeve 12 is reduced, thus the push block 10 falls down and slides relatively between the inclined slide bars 11, the inclined push bar 11 will be given an outward thrust in the process of sliding the push block 10 downwards, when this thrust is greater than the pulling force of the pull-back spring 204, the sealing valve plate 202 will be driven to move outwards along the guiding slide bar 15 and the sliding rail 19, so that the sealing valve plate 202 can be plugged into the matching sleeve 31 under the guiding of the guiding block 22, so that the sealing effect is better than the traditional simple sealing of the valve body 9 by the valve plate only, in addition, the cross-sectional area of the lifting sleeve 12 is half of the sum of the cross-sectional areas of the two closed valve plates 202, and the descending speed of the lifting sleeve 12 is twice of the moving speed of the two closed valve plates 202, so that when the fluid flowing in the valve body 9 is liquid, the lifting sleeve 12 can squeeze the liquid in a temporary cavity formed between the lifting sleeve 12 and the two closed valve plates 202 in the descending process, thereby compressing the space in the temporary cavity, and the two closed valve plates 202 can squeeze and discharge the liquid in the matched sleeve 31 after being squeezed into the matched sleeve 31, thereby expanding the space in the temporary cavity, so that when the lifting sleeve 12 descends and the two closed valve plates 202 enter the matched sleeve 31, the space in the temporary cavity compressed by the lifting sleeve 12 is equal to the space in the temporary cavity expanded by the two closed valve plates 202, and the liquid in the temporary cavity can not be compressed, thereby discharging the interference of the liquid in the temporary cavity on the lifting sleeve 12 and the closed valve plates 202;

step two: when the internal passage of the valve body 9 needs to be opened, the controller 5 controls the driving motor 301 to rotate reversely, so that the driving screw 34 can drive the lifting sleeve 12 to move upwards, at this time, because the compression spring 26 is in a compressed state, and the pull-back spring 204 is in a tensile state, the valve core 2 is still only pressed inside the valve body 9 when the lifting sleeve 12 moves upwards, and the distance between the lifting sleeve 12 and the valve core 2 is increased, so that the sealing valve plate 202 is preferentially slid inwards from the matching sleeve 31, and then after the compression spring 26 is separated from the compressed state, the valve core 2 can be driven by the compression spring 26 to move upwards, so that the internal passage of the valve body 9 can be completely opened when the valve core 2 moves upwards to a non-working position.

While the foregoing has been described in terms of illustrative embodiments thereof, so that those skilled in the art may appreciate the present application, it is not intended to be limited to the precise embodiments so that others skilled in the art may readily utilize the present application to its various modifications and variations which are within the spirit and scope of the present application as defined and determined by the appended claims.

Claims (10)

1. A spool driving mechanism and a double-gate valve, characterized by comprising:

the device comprises a shell (1), wherein an installation cavity (18) is formed in the shell (1), a rotary driving device (3) is arranged in the installation cavity, a driving screw (34) is arranged in the installation cavity (18), the driving screw (34) is rotatably installed with the shell (1) through a rotating seat (14), and a driven wheel (13) meshed with the output end of the driving device (3) is fixedly installed at the top of the driving screw (34);

the lifting sleeve (12) is slidably mounted with the shell (1), the lifting sleeve (12) is in threaded connection with the driving screw (34), a sliding sleeve (29) sliding along the lifting sleeve (12) is connected in a sliding cavity (17) of the lifting sleeve (34) through an extrusion spring (26), a bottom connecting frame (24) is fixedly mounted at the bottom of the sliding sleeve (29), a valve core (2) is arranged at the bottom of the bottom connecting frame (24), the valve core (2) comprises a limit connecting frame (205) fixed at the bottom of the bottom connecting frame (24), valve plate frames (201) are respectively arranged at two ends of the limit connecting frame (205), a closed valve plate (202) is slidably mounted in each valve plate frame (201), an inclined sliding rod (11) is fixedly arranged at the upper end of the closed valve plate (202), and a pushing block (10) for driving the inclined sliding rod (11) to move is fixedly arranged at the bottom of the lifting sleeve (12).

The controller (5), controller (5) fixed mounting is on casing (1) and with rotary drive device (3) electric connection, and fixed mounting has detection cooperation pole (23) on lift sleeve (12), fixed mounting has displacement detection sensor (17) with controller (5) electric connection between detection cooperation pole (23) and casing (1).

2. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the top integrated into one piece of slip sleeve (29) has top spacing ring (28), and the bottom integrated into one piece of lift sleeve (12) has bottom spacing ring (30) that are used for spacing top spacing ring (28) and prevent slip sleeve (29) slip out in lift sleeve (12).

3. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the display (6) is fixedly arranged on the shell (1), the display (6) is electrically connected with the controller (5) and used for displaying the working state of the controller (5), and the pull handle (8) is fixedly arranged in the shell (1).

4. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the end fixed mounting who seals valve plate (202) has connection push pedal (203), and two connection push pedal (203) are connected with spacing link (205) through pullback spring (204), the top and the slant slide bar (11) of connection push pedal (203) pass through bolt fixed mounting, and have seted up slide rail (19) on spacing link (205), connection push pedal (203) are along slide rail (19) through first sliding seat (20) slip.

5. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the surface of the shell (1) is fixedly provided with radiating fins (7) inserted into the mounting cavity (18), the radiating fins (7) are in wave shape or hollow shape, the shell (1) is provided with a temperature detection sensor (4) for detecting the temperature in the mounting cavity (18) and electrically connected with the controller (5), and the shell (1) is fixedly provided with an alarm electrically connected with the controller (5).

6. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the shell (1) is provided with a matching guide groove (32), and the lifting sleeve (12) is fixedly provided with a matching guide protrusion (33) which is in sliding fit with the matching guide groove (32).

7. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the rotary driving device (3) comprises a driving motor (301) fixedly installed in an installation cavity (18), a driving wheel (302) is driven at the output end of the driving motor (301), a first gear (304) and a second gear (303) are installed in the installation cavity (18) in a rotating mode through bearings, the first gear (304) and the second gear (303) are fixedly installed coaxially, the first gear (304) is connected with the driving wheel (302) in a meshed mode, the second gear (303) is connected with the driven wheel (13) in a meshed mode, the transmission ratio of the driving wheel (302) to the first gear (304) is 3:1, the gear ratio of the first gear (304) to the second gear (303) is 3:1, and the driving motor (301) is electrically connected with the controller (5).

8. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the bottom connecting frame (24) is provided with a guide slide bar (15) along the left-right direction, and the tail end of the inclined slide bar (11) is integrally formed with a second sliding seat (25) sliding along the guide slide bar (15).

9. The spool driving mechanism and the double-gate valve according to claim 1, characterized in that: the bottom of the shell (1) is provided with a guide slideway (16), and the top of the inclined slide bar (11) slides along the guide slideway (16).

10. A double-gate valve, characterized in that: the valve element driving mechanism comprises the valve element driving mechanism and a valve element (2) as claimed in any one of claims 1-9, wherein the valve element (2) is arranged in a valve body (9), a matching sleeve (31) is fixedly arranged at the joint of the valve body (9) and a valve plate frame (201), a spring energy storage sealing ring (21) sealed with the inner wall of the matching sleeve (31) is fixedly arranged on a sealing valve plate (202), a rubber sleeve sealed with the inner wall of the matching sleeve (31) is arranged on the outer wall surface of the sealing valve plate (202), a guiding inclined surface is arranged at the edge of the end part of the sealing valve plate (202) fixedly, so that the sealing valve plate (202) is guided to enter a guiding block (22) in the matching sleeve (31), and an annular bulge which is limited by the side surface of the guiding block (22) and sealed with the guiding block (22) is integrally formed in the matching sleeve (31).