CN113639061A - Double-gate wedge gate valve - Google Patents

Double-gate wedge gate valve Download PDF

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Publication number
CN113639061A
CN113639061A CN202110901644.8A CN202110901644A CN113639061A CN 113639061 A CN113639061 A CN 113639061A CN 202110901644 A CN202110901644 A CN 202110901644A CN 113639061 A CN113639061 A CN 113639061A
Authority
CN
China
Prior art keywords
valve
fixed
gate
valve body
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110901644.8A
Other languages
Chinese (zh)
Inventor
李伟
严涛
严珊珊
童海东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Shengtai Valve Co ltd
Original Assignee
Jiangsu Shengtai Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Shengtai Valve Co ltd filed Critical Jiangsu Shengtai Valve Co ltd
Priority to CN202110901644.8A priority Critical patent/CN113639061A/en
Publication of CN113639061A publication Critical patent/CN113639061A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
    • F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/316—Guiding of the slide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters

Abstract

The invention discloses a double-gate wedge gate valve, comprising: the valve comprises a valve body, a flow channel, a closing member, a driving member, a bypass assembly and a valve cover; the valve body is internally provided with a flow passage, the closing element is used for controlling the opening and closing of the flow passage, the driving element is used for providing driving power for the action of the closing element, the right end of the valve body is provided with a valve cover, the bypass assembly is arranged outside the valve cover and connected with the valve cover, and the bypass assembly is used for controlling an external air source to input low-pressure inert gas into the valve cover so as to control the closing of the flow passage in the valve body in a linkage manner with the driving element. The double-gate wedge gate valve is provided with a double-gate plate structure, and can realize bidirectional forced sealing; when the valve is opened and closed, only the friction force at the inclined plane of the wedge block needs to be overcome, and after the wedge block moves, the flashboard can also move flexibly; when the valve is closed, the external air source is controlled to input low-pressure inert gas for auxiliary sealing through the valve rod limit, and meanwhile, the external air source is cut off through the valve rod limit control when the valve is opened.

Description

Double-gate wedge gate valve
Technical Field
The invention relates to the field of gate valves, in particular to a double-gate wedge type gate valve.
Background
The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. Gate valves are sealed by the contact of the valve seat and gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate plate is divided into a rigid gate plate and an elastic gate plate according to the difference of the gate plate. .
In order to effectively cut off fluid in a pipeline, a gate valve is arranged on the pipeline, the pipeline is complex, and high pressure exists in the pipeline, so that the requirement on the gate valve is high, most of the existing gate valves only drive and control the closing of a gate plate, the sealing is easy to be unreliable, and the use requirement can not be well met.
Disclosure of Invention
The present invention is directed to a dual gate wedge gate valve, which solves the above-mentioned problems of the prior art by controlling the closing of the gate plate of the gate valve through a driving member and a bypass assembly.
In order to achieve the above object, the present invention provides the following technical solution, a double-gate wedge gate valve, comprising: the valve comprises a valve body, a flow channel, a closing member, a driving member, a bypass assembly and a valve cover;
the valve body is internally provided with the flow channel, the closing element is used for controlling the opening and closing of the flow channel, the driving element is used for providing driving power for the action of the closing element, the right end of the valve body is provided with the valve cover, the bypass assembly is arranged outside the valve cover and connected with the valve cover, and the bypass assembly is used for controlling an external air source to input low-pressure inert gas into the valve cover and further controlling the closing of the flow channel in the valve body in a linkage mode with the driving element.
Preferably, the upper end and the lower end of the valve body are respectively an inlet end and an outlet end, and the inlet end and the outlet end are communicated through the flow channel.
Preferably, the shutter comprises: the valve comprises a valve seat, a flashboard sealing ring, a valve body guide groove and a flashboard guide rail;
the valve seat is fixedly arranged on the side wall in the valve body, and is provided with a through hole which penetrates through the left end surface and the right end surface of the valve body and allows a medium to flow;
the valve body guide groove is fixed on the outer side wall of the right end surface of the valve body and is positioned in a cavity formed between the valve cover and the valve body, and the flashboard guide rail is arranged in the valve body guide groove;
the flashboard sets up two, and the symmetry set up in both sides about the through-hole, the flashboard passes through flashboard guide rail sliding connection in the valve body guide way, there is the flashboard sealing washer through bolted connection on the flashboard, the flashboard sealing washer is used for when the valve is closed the flashboard with the disk seat laminating is sealed.
Preferably, a bottom cover is fixed at the through hole of the left end face of the valve body through a bolt.
Preferably, the driving member includes: the wedge block, the valve rod, the bracket and the driving device;
the wedge blocks are arranged on the inner sides of the two gate plates, the inclined surfaces of the wedge blocks are attached to the gate plates, and the right end of the wedge block is fixedly connected to one end of the valve rod;
the support is sleeved outside the valve rod and fixed at the right end of the valve cover, a driving device is fixedly connected at the right end of the support and connected with the valve rod and used for controlling the valve rod to move.
Preferably, the bypass assembly comprises: the device comprises a bent pipe, a driving connecting block, a reset stop valve and an actuator connecting block;
drive connecting block one end connect in the valve rod, the drive connecting block other end with executor connecting block one end joint, the executor connecting block other end with the stop valve that resets is connected, the return bend is connected inside the valve gap, the stop valve that resets and outside air supply.
Preferably, the inlet end department of valve body upper end still is provided with filter equipment, filter equipment with the valve body is fixed, filter equipment includes: the filter comprises a filter device shell, a filter screen assembly, a limiting chute and a filter screen replacing device;
the filter device shell with valve body inlet end department is fixed, filter device shell inside wall is fixed with spacing spout, filter screen subassembly sliding connection in the spacing spout, the filter device shell is provided with filter screen changing device, just filter screen changing device with the filter screen subassembly is connected.
Preferably, the screen changer includes:
the spring-loaded type gear box comprises a guide plate, a first sliding block, a first sliding chute, a rebound power arm, a spring connecting hole, a first linkage plate, a first hinged shaft, a first spring, a second hinged shaft, a second linkage plate, a first fixed shaft, a second spring, a second fixed shaft, a third hinged shaft, a rebound deflector rod, a rebound deflector block, a fourth hinged shaft, a clamping bulge, a sector toothed plate, a driving arm, a fifth hinged shaft, a second sliding block, a sixth hinged shaft, a fixed plate, a groove, a third fixed shaft, a fourth fixed shaft and a third spring;
the guide plate is fixed with the filtering device shell, and the first sliding groove is vertically formed in the guide plate;
the filter screen assembly is fixed with one end of the fixing plate penetrating through the filtering device shell, the other end of the fixing plate is connected to the second sliding block through the sixth hinge shaft, the second sliding block is connected in the first sliding groove in a sliding mode, and the fixing plate is provided with the groove;
the first sliding block is connected in the first sliding groove in a sliding mode and located below the second sliding block, the first sliding block is connected with the driving arm through the fifth hinge shaft, one end of the driving arm is located in the groove, and the other end of the driving arm is rotationally connected with a sector toothed plate through the third fixed shaft;
the third spring is further arranged between the driving arm and the sector toothed plate, the middle part of the third spring is sleeved on the third fixing shaft, one end of the third fixing shaft is clamped on the edge of the sector toothed plate, and the other end of the third fixing shaft is connected with the driving arm through the fourth fixing shaft;
the rebounding deflector rod is arranged on one side of the sector toothed plate, one end of the rebounding deflector rod is hinged to the driving arm through the third hinge shaft, the clamping bulge is arranged on one side, close to the sector toothed plate, of the rebounding deflector rod, and the clamping bulge is meshed with the sector toothed plate;
the other end of the rebound shifting lever is connected with the rebound shifting block through the fourth hinged shaft;
the second spring is arranged on the opposite side of the clamping protrusion, the middle part of the second spring is connected to the driving arm through the second fixed shaft, one end of the second spring is clamped with the rebound deflector rod, and the other end of the second spring is connected with the driving arm through the first fixed shaft fixed on the driving arm;
one end of the resilience power arm is fixed on the guide plate, the middle part of the resilience power arm is connected with the first linkage plate through the first hinge shaft, one end of the first linkage plate is provided with the spring connecting hole, one end of the first spring is fixed on the spring connecting hole, and the other end of the first spring is fixed at the other end of the resilience power arm;
the other end of the first linkage plate is hinged to one end of the second linkage plate through a second hinge shaft, and the other end of the second linkage plate is fixed to the sector toothed plate.
Preferably, the outlet end department of valve body lower extreme still is provided with the runner and changes detection device, the runner changes detection device and includes:
the circulating cavity, the power bin, the power rotating arm, the motor, the transmission shaft, the driving gear, the annular gear, the fifth fixing shaft, the seventh articulated shaft, the detection plate, the fixing bottom plate, the limiting pipe and the second chute;
one side of the circulation cavity is fixed with the outlet end of the lower end of the valve body, the power bins are of an annular structure, the circulation cavity is arranged between the power bins, the motor is fixed on the inner wall of the power bins, the motor is electrically connected with the power controller, a torque sensor is arranged outside the output end of the motor, the torque sensor is electrically connected with the power controller, the output end of the motor is fixed with one end of the transmission shaft, the other end of the transmission shaft is fixed on the driving gear, and the transmission shaft and the driving gear are both positioned in the power bins;
the other side of the circulation cavity is fixedly provided with the fixed bottom plate, the fixed bottom plate is annular, the upper end of the fixed bottom plate is fixedly provided with the limiting pipe, the inner diameter of the limiting pipe is the same as that of the fixed bottom plate, and the outer diameter of the limiting pipe is smaller than that of the fixed bottom plate;
the limiting pipe is sleeved with the annular gear, and the outer edge of the annular gear extends into the power bin and is meshed with the driving gear;
the limiting pipe is far away from the valve body side and is connected with the rotating arm through the seventh hinged shaft, one end of the rotating arm is fixedly provided with the detection plate, the other end of the rotating arm is provided with the second sliding groove, one end of the fifth fixing shaft is fixed on the annular gear, and the other end of the fifth fixing shaft is connected in the second sliding groove in a sliding mode.
Drawings
FIG. 1 is a sectional view of the main structure of the present invention;
FIG. 2 is a schematic side view of the main structure of the present invention;
FIG. 3 is a schematic view of the filter assembly of the present invention in an installed position;
FIG. 4 is a schematic view of a filter screen changer according to the present invention;
FIG. 5 is a schematic view of the installation position and structure of the flow channel variation detecting device of the present invention;
FIG. 6 is a schematic view of a detection state structure of the flow channel variation detection apparatus of the present invention;
FIG. 7 is a schematic view of a static structure of the flow channel variation detecting device of the present invention;
in the figure: 1. a valve body; 2. a flow channel; 3. a closure member; 4. a drive member; 5. a bypass assembly; 6. a valve cover; 7. a valve seat; 8. a shutter plate; 9. a gate seal ring; 10. a wedge block; 11. a valve stem; 12. a support; 13. a drive device; 14. bending the pipe; 15. a driving connecting block; 16. resetting the stop valve; 17. an actuator connecting block; 18. a valve body guide groove; 19. a ram guide rail; 20. a bottom cover; 21. a through hole; 301. a filter device housing; 302. a screen assembly; 303. a limiting chute; 304. a filter screen replacing device; 30401. a guide plate; 30402. a first slider; 30403. a first chute; 30404. a rebound power arm; 30405. a spring connecting hole; 30406. a first linkage plate; 30407. a first hinge shaft; 30408. a first spring; 30409. a second hinge shaft; 30410. a second linkage plate; 30411. a first fixed shaft; 30412. a second spring; 30413. a second fixed shaft; 30414. a third hinge shaft; 30415. rebounding the deflector rod; 30416. rebounding the shifting block; 30417. a fourth hinge shaft; 30418. clamping the bulges; 30419. a sector toothed plate; 30420. a drive arm; 30421. a fifth hinge shaft; 30422. a second slider; 30423. a sixth hinge shaft; 30424. a fixing plate; 30425. a groove; 30426. a third fixed shaft; 30427. a fourth fixed shaft; 30428. a third spring; 401. a flow-through cavity; 402. a power bin; 403. a power-turning arm; 404. a motor; 405. a drive shaft; 406. a driving gear; 407. a ring gear; 408. a fifth fixed shaft; 409. a seventh hinge shaft; 410. detecting a plate; 411. fixing the bottom plate; 412. a limiting pipe; 413. a second runner.
Detailed Description
The description of the present invention as to "first", "second", etc. is for descriptive purposes only, and not for purposes of particular ordinal or sequential meaning, nor for limitations, and is intended to distinguish between components or operations that are described in the same technical language, and is not intended to indicate or imply relative importance or imply the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, an embodiment of the present invention is shown: the utility model provides a double-gate board wedge gate valve which characterized in that: the method comprises the following steps: the valve comprises a valve body 1, a flow channel 2, a closing member 3, a driving member 4, a bypass assembly 5 and a valve cover 6;
the flow channel 2 is arranged in the valve body 1, the closing part 3 is used for controlling the opening and closing of the flow channel 2, the driving part 4 is used for providing driving power for the action of the closing part 3, the valve cover 6 is arranged at the right end of the valve body 1, the bypass assembly 5 is arranged outside the valve cover 6 and connected with the valve cover 6, and the bypass assembly 5 is used for controlling an external air source to input low-pressure inert gas into the valve cover 6 and further controlling the closing of the flow channel 2 in the valve body 1 in a linkage mode with the driving part 4.
Preferably, the upper end and the lower end of the valve body 1 are respectively an inlet end and an outlet end, and the inlet end and the outlet end are communicated by the flow channel 2.
Preferably, said shutter 3 comprises: the valve seat 7, the gate plate 8, the gate plate sealing ring 9, the valve body guide groove 18 and the gate plate guide rail 19;
the valve seat 7 is fixedly arranged on the side wall in the valve body 1, and the valve seat 7 is provided with a through hole 21 which penetrates through the left end surface and the right end surface of the valve body 1 and allows medium to flow;
the valve body guide groove 18 is fixed on the outer side wall of the right end surface of the valve body 1 and is positioned in a cavity formed between the valve cover 6 and the valve body 1, and the flashboard guide rail 19 is arranged in the valve body guide groove 18;
the flashboard 8 sets up two, and the symmetry set up in both sides about the through-hole 21, the flashboard 8 passes through 19 sliding connection in the valve body guide way 18, there is flashboard sealing washer 9 through bolted connection on the flashboard 8, it is right that flashboard sealing washer 9 is used for when the valve is closed flashboard 8 with the laminating of disk seat 7 is sealed.
Preferably, a bottom cover 20 is fixed at the through hole of the left end face of the valve body 1 through a bolt.
Preferably, the driving member 4 comprises: the wedge block 10, the valve rod 11, the bracket 12 and the driving device 13;
the wedge block 10 is arranged on the inner sides of the two gate plates 8, the inclined surface of the wedge block 10 is attached to the gate plates 8, and the right end of the wedge block 10 is fixedly connected to one end of the valve rod 11;
the support 12 is sleeved outside the valve rod 11 and fixed at the right end of the valve cover 6, the right end of the support 12 is fixedly connected with a driving device 13, and the driving device 13 is connected with the valve rod 11 and used for controlling the movement of the valve rod 11. The driving device can adopt the existing device for driving the valve rod to move;
preferably, the bypass assembly 5 comprises: the device comprises a bent pipe 14, a driving connecting block 15, a reset stop valve 16 and an actuator connecting block 17;
drive connecting block 15 one end connect in valve rod 11, the drive connecting block 15 other end with executor connecting block 17 one end joint, executor connecting block 17 other end with stop valve 16 that resets is connected, return bend 14 is connected inside, stop valve 16 and the outside air supply that resets of valve gap 6. The drive connecting block is connected with the valve rod, the other end of the drive connecting block extends to the reset stop valve, and the drive connecting block controls the linkage state of the reset stop valve and the valve rod 11 under the action of the valve rod (specifically, optionally, a first valve rod of the reset stop valve and the valve rod 11 can be connected through the drive connecting block 15 and the actuator connecting block 17 to realize linkage control); and the reset stop valve is connected with the drive connecting block and used for controlling the opening and closing of an external air source.
The working principle and the beneficial effects of the technical scheme are as follows: the closing part 3 is used for controlling the opening and closing of a flow passage in a valve body, the driving part 4 is used for providing driving power for the action of the closing part, the bypass assembly 5 is used for controlling the input of low-pressure inert gas input by an external gas source and further controlling the closing of the flow passage in the valve body in a linkage manner with the driving part 4, the wedge block 10 applies closing force to the flashboard 8 when the valve is closed, when the valve is opened, the flashboard 8 is dragged to move due to the fact that the wedge block 10 moves rightwards (the wedge block 10 is driven to move rightwards through the valve rod) and the wedge block 10 is connected with the flashboard 8, the driving connecting block 15 controls the linkage state of the reset stop valve 16 and the valve rod 11 through the driving connecting block 15 under the action of the valve rod 11, and further controls the opening and closing of the external gas source, and the double-wedge type gate valve is provided with a double-flashboard structure, and bidirectional forced sealing can be realized; when the valve is opened and closed, only the friction force at the inclined plane of the wedge block needs to be overcome, and after the wedge block moves, the flashboard can also move flexibly; when the valve is closed, the external air source is controlled to input low-pressure inert gas for auxiliary sealing (auxiliary sealing under the pressure action of gas) through valve rod limit, and simultaneously, the external air source input is cut off through valve rod limit control when the valve is opened. The invention meets the cutting-off requirement of the reactor, has unique structure, reliable sealing, flexible action and long service life, and is particularly suitable for the working conditions of high temperature and large temperature difference.
The gate plate of the gate valve is controlled to be closed through the driving piece and the bypass assembly, so that the gate plate is closed (sealed) reliably.
Example 2
Referring to fig. 3-4, on the basis of the above embodiment 1, a filtering device is further disposed at an inlet end of an upper end of the valve body 1, and the filtering device is fixed to the valve body 1, and the filtering device includes: a filtering device shell 301, a filter screen assembly 302, a limiting chute 303 and a filter screen replacing device 304;
filter equipment casing 301 with 1 inlet end department of valve body is fixed, filter equipment casing 301 inside wall is fixed with spacing spout 303, filter screen subassembly 302 sliding connection in spacing spout 303, filter equipment casing 301 is provided with filter screen changing device 304, just filter screen changing device 304 with filter screen subassembly 302 is connected.
Preferably, the screen changer 304 includes:
a guide plate 30401, a first sliding block 30402, a first sliding chute 30403, a resilience power arm 30404, a spring connecting hole 30405, a first linkage plate 30406, a first hinge shaft 30407, a first spring 30408, a second hinge shaft 30409, a second linkage plate 30410, a first fixed shaft 30411, a second spring 30412, a second fixed shaft 30413, a third hinge shaft 30414, a resilience shift lever 30415, a resilience shift block 30416, a fourth hinge shaft 30417, a clamping protrusion 30418, a sector toothed plate 30419, a driving arm 30420, a fifth hinge shaft 30421, a second sliding block 30422, a sixth hinge shaft 30423, a fixed plate 30424, a groove 30425, a third fixed shaft 30426, a fourth fixed shaft 30427, and a third spring 30428;
the guide plate 30401 is fixed to the filtering device casing 301, and the first sliding groove 30403 is vertically arranged on the guide plate 30401;
the filter screen assembly 302 is fixed to one end of the fixing plate 30424 penetrating through the filter device housing 301, the other end of the fixing plate 30424 is connected to the second sliding block 30422 through the sixth hinge shaft 30423, the second sliding block 30422 is slidably connected to the first sliding groove 30403, and the fixing plate 30424 is provided with the groove 30425;
the first sliding block 30402 is connected in the first sliding chute 30403 in a sliding manner, the first sliding block 30402 is located below the second sliding block 30422, the first sliding block 30402 is connected to the driving arm 30420 through the fifth hinge shaft 30421, one end of the driving arm 30420 is located in the groove 30425, and the other end of the driving arm 30420 is rotatably connected to a sector-shaped toothed plate 30419 through the third fixed shaft 30426;
the third spring 30428 is further disposed between the driving arm 30420 and the sector-shaped toothed plate 30419, the middle of the third spring 30428 is sleeved on the third fixing shaft 30426, one end of the third fixing shaft 30426 is clamped on the edge of the sector-shaped toothed plate 30419, and the other end of the third fixing shaft 30426 is connected to the driving arm 30420 through the fourth fixing shaft 30427;
the sector-shaped toothed plate 30419 is provided with the rebound shift lever 30415 at one side, the rebound shift lever 30415 is hinged to the driving arm 30420 through the third hinge shaft 30414, the clamp protrusion 30418 is arranged at one side of the rebound shift lever 30415 close to the sector-shaped toothed plate 30419, and the clamp protrusion 30418 is engaged with the sector-shaped toothed plate 30419;
the other end of the rebound shift lever 30415 is connected to the rebound shift block 30416 through the fourth hinge shaft 30417;
the opposite side of the clamping protrusion 30418 is provided with the second spring 30412, the middle of the second spring 30412 is connected to the driving arm 30420 through the second fixed shaft 30413, one end of the second spring 30412 is clamped with the rebounding driving lever 30415, and the other end of the second spring 30412 is connected to the driving arm 30420 through the first fixed shaft 30411 fixed to the driving arm 30420;
one end of the rebounding power arm 30404 is fixed to the guide plate 30401, the middle of the rebounding power arm 30404 is connected to the first linkage plate 30406 through the first hinge shaft 30407, one end of the first linkage plate 30406 is provided with the spring connecting hole 30405, one end of the first spring 30408 is fixed to the spring connecting hole 30405, and the other end of the first spring 30408 is fixed to the other end of the rebounding power arm 30404;
the other end of the first linkage plate 30406 is hinged to one end of the second linkage plate 30410 through a second hinge shaft 30409, and the other end of the second linkage plate 30410 is fixed to the sector-shaped toothed plate 30419.
The working principle and the beneficial effects of the technical scheme are as follows: the inlet end of the upper end of the valve body 1 is provided with a filtering device, impurities entering the valve are filtered by the filtering device, the influence of the impurities on the valve is prevented, when a filter screen assembly 302 of the filtering device is inevitably damaged after being used for a long time, the filtering effect is influenced, the filtering screen replacing device 304 is arranged to conveniently replace the filtering screen assembly, the workload can be effectively reduced, the tail end (the end far away from the filter screen assembly 302) of a driving arm 30420 is pressed downwards, the filtering screen assembly 302 is driven to move upwards under the action of a fixing plate 30424 and a groove 30425 to extend out of a filtering device shell 301, the replacement is convenient, at the moment, a clamping protrusion 30418 is meshed with teeth on a sector toothed plate 30419, the relative position is static, the distance between a first hinging shaft 30407 and a third fixing shaft 30426 is fixed, the driving arm 30420 is static relative to a guide plate 30401 under the mutual extrusion of a third spring 30428 and a second spring 30412, the operation of workers is facilitated, the filter screen assembly 302 can only vertically move under the limitation of the first sliding groove 30403, and after the replacement is completed, only the rebounding shifting block 30416 needs to be pulled, the sector toothed plate 30419 is separated from the clamping protrusion 30418, the driving arm 30420 returns to the original position under the action of the first spring 30408, and the filter screen assembly 302 continues to perform the filtering operation.
Example 3
Referring to fig. 5 to 7, on the basis of embodiment 1, a flow channel change detection device is further disposed at an outlet end of a lower end of the valve body 1, and the flow channel change detection device includes:
a circulation cavity 401, a power bin 402, a rotating arm 403, a motor 404, a transmission shaft 405, a driving gear 406, a ring gear 407, a fifth fixed shaft 408, a seventh hinge shaft 409, a detection plate 410, a fixed bottom plate 411, a limit pipe 412 and a second chute 413;
one side of the circulation cavity 401 is fixed with an outlet end at the lower end of the valve body 1, the power bins 402 are in an annular structure, the circulation cavity 401 is arranged between the power bins 402, the motor 404 is fixed on the inner wall of the power bins 402, the motor 404 is electrically connected with a power supply controller, a torque sensor is arranged outside the output end of the motor 404 (when the detection plate 410 is contacted with the circulation cavity 401, the detection plate 410 stops rotating around the seventh hinge shaft 409, the motor 404 still runs at the moment, a larger torque is generated to act on the transmission shaft 405, when the torque is larger than a preset torque, the power supply controller controls the motor to stop), the torque sensor is electrically connected with the power supply controller, the output end of the motor 404 is fixed with one end of the transmission shaft 405, the other end of the transmission shaft 405 is fixed on the driving gear 406, and the transmission shaft 405, 405, The drive gears 406 are all located within the power cartridge 402;
the fixed bottom plate 411 is fixed on the other side of the circulation cavity 401, the fixed bottom plate 411 is annular, the limiting pipe 412 is fixed at the upper end of the fixed bottom plate 411, the inner diameter of the limiting pipe 412 is the same as that of the fixed bottom plate 411, and the outer diameter of the limiting pipe 412 is smaller than that of the fixed bottom plate 411;
the limiting pipe 412 is sleeved with the annular gear 407, and the outer edge of the annular gear 407 extends into the power bin 402 and is meshed with the driving gear 406;
the side of the limiting pipe 412 far from the valve body 1 is connected to the power rotating arm 403 through the seventh hinge shaft 409, one end of the power rotating arm 403 is fixed with the detecting plate 410, the other end of the power rotating arm 403 is provided with the second sliding groove 413, one end of the fifth fixing shaft 408 is fixed to the annular gear 407, and the other end of the fifth fixing shaft 408 is slidably connected to the second sliding groove 413.
The working principle and the beneficial effects of the technical scheme are as follows: in the use process of the gate valve, a part of impurities are inevitably accumulated in the valve body 1, which affects the passing efficiency of the fluid in the gate valve, a flow passage change detection device is arranged at the outlet end of the lower end of the valve body 1, the diameter of the flow passage 2 is detected, the driving gear 406 is driven by the motor 404 to rotate, the annular gear 407 rotates along with the driving gear 406 due to the meshing of the annular gear 407 and the driving gear 406, the stable output of the motor 404 is ensured due to the large transmission ratio caused by the large diameter ratio between the driving gear 406 and the annular gear 407, the rotation of the annular gear 407 drives the fifth fixing shaft 408 fixed on the annular gear 407 to rotate along with the annular gear 407, the fifth fixing shaft 408 is positioned in the second chute 413 and slides in the second chute, and when the annular gear 407 rotates, the rotation force arm 403 rotates around the seventh hinge shaft 409 under the action of the fifth fixing shaft 408 and the seventh hinge shaft 409, the detection plate 410 is controlled to move in the circulation cavity 401, when the detection plate 410 is in contact with the circulation cavity 401, and data detected by the torque sensor are the same as preset data, the power supply controller controls the motor to stop rotating, the current diameter of the circulation cavity 401 is calculated through the number of turns of the detection motor 404, and the diameter of the flow channel 2 can be known, so that whether impurities are accumulated in the flow channel 2 or not is judged, and the gate valve is possibly blocked.
Example 4
On the basis of embodiment 1 above, the fatigue state detection device for the shutter seal ring 9 is further included, and the fatigue state detection device for the shutter seal ring 9 includes:
the temperature sensor is arranged on the inner wall of the valve body 1 and used for detecting the temperature of the working environment of the flashboard sealing ring 9;
the force sensor is arranged in the flashboard sealing ring 9 and used for detecting the pressure between the flashboard 8 and the valve seat 7, which is borne by the flashboard sealing ring 9;
a timer for recording the time when the shutter seal ring 9 is pressed;
the alarm is positioned on the valve cover 6;
the controller, the controller respectively with temperature sensor, force sensor, time-recorder and alarm electric connection, the controller is based on temperature sensor, force sensor, time-recorder control alarm work includes:
step 1: the controller obtains a fatigue effect constant of the flashboard sealing ring 9 related to thermodynamic temperature based on the temperature sensor and a formula (1):
Figure BDA0003200101880000121
wherein N is a fatigue effect constant of the gate seal ring 9 related to thermodynamic temperature, W is activation energy preset for the gate seal ring 9, where energy required for material molecules of the gate seal ring 9 to change from a normal state to an active state in which chemical reaction easily occurs, B is a gas constant, T is an ambient temperature around the gate seal ring 9 detected by a temperature sensor, exp is an exponential function with a natural constant e as a base, m is a weight of the gate seal ring 9, σ is an aging reaction rate constant of the gate seal ring 9, μ is a fluctuation compensation coefficient of the ambient temperature around the gate seal ring 9 detected by the temperature sensor, and δ is a precision coefficient of the temperature sensor;
step 2: the controller calculates the fatigue state coefficient of the shutter seal ring 9 based on the force sensor, the timer and the formula (2):
Figure BDA0003200101880000131
wherein the content of the first and second substances,
Figure BDA0003200101880000132
do 9 fatigue state coefficients of flashboard sealing washer, F detect for force sensor the pressure that flashboard sealing washer 9 received, A does the rockwell hardness of flashboard sealing washer 9, G do the tensile strength of flashboard sealing washer 9, e are natural constant, take value 2.72, and epsilon does the compression ratio of flashboard sealing washer 9 when the valve is closed, S when the gate valve is closed flashboard 8 is right with disk seat 7 the extrusion area of flashboard sealing washer 9, Z is the index factor (the frequency factor of flashboard sealing washer 9), and t is the timer record flashboard sealing washer 9 is by extruded time, t0Is a unit time;
and when the fatigue state coefficient of the flashboard sealing ring 9 exceeds a preset reference value range, the controller controls the alarm to give an alarm.
In the formula (I), the compound is shown in the specification,
Figure BDA0003200101880000133
the fatigue effect constant of the flashboard sealing ring 9 related to the thermodynamic temperature is increased along with the increase of the temperature, and meanwhile, the obtained fatigue effect constant of the flashboard sealing ring 9 related to the thermodynamic temperature is corrected according to the precision coefficient of a temperature sensor, the aging reaction rate constant of the flashboard sealing ring 9 and the like to obtain a final result,
Figure BDA0003200101880000134
the fatigue state coefficient of the gate sealing ring 9 is obtained based on the relevant parameters of the gate sealing ring 9, such as hardness, tensile strength and frequency factor, and the action of the outside on the gate sealing ring, such as the pressure, and the fatigue state coefficient of the gate sealing ring 9 is positively correlated with the fatigue effect constant related to the thermodynamic temperature,
Figure BDA0003200101880000141
the relationship between the time of pressing the shutter seal ring 9 and the fatigue state coefficient of the shutter seal ring 9 is shown, and the fatigue state coefficient of the shutter seal ring 9 increases with the increase in the pressing time.
Assuming that the shutter packing 9 detects the ambient temperature around the shutter packing 9 by the temperature sensorThe temperature is 30K, that is, T is 30, the preset activation energy of the gate seal ring 9 is 10J, the gas constant is 8.314J/(mol × K), the weight of the gate seal ring 9 is 0.1kg, the aging reaction rate constant of the gate seal ring 9 is 1, the fluctuation compensation coefficient of the ambient temperature around the gate seal ring 9 detected by the temperature sensor is 0.9, the accuracy coefficient of the temperature sensor is 0.98, and then the fatigue effect constant N of the gate seal ring 9 related to the thermodynamic temperature is calculated as e3.09(e is a natural constant).
The force sensor has a detection value F of 1N, the gate seal 9 has a rockwell hardness a of 40, the gate seal 9 has a tensile strength G of 10pa, the gate seal 9 has a compression ratio epsilon of 0.5 when the valve is closed, and the gate seal 9 has an area S of 10cm pressed2The frequency factor Z of the shutter seal ring 9 is 0.3, the time t recorded by the timer when the shutter seal ring 9 is pressed is 100s, and the unit time t0Taking 1s, and calculating by a formula (2) to obtain the fatigue state coefficient of the flashboard sealing ring 9
Figure BDA0003200101880000142
(three decimal places are taken), and the fatigue state coefficient of the flashboard sealing ring 9 is obtained through calculation
Figure BDA0003200101880000143
And when the current value is larger than the preset reference value range of 0.9-1, the controller controls the alarm to send out an alarm prompt.
The beneficial effects of the above technical scheme are: through setting up temperature sensor for the ambient temperature around the flashboard sealing washer 9 is recorded, calculate through detecting ambient temperature around the flashboard sealing washer 9 and formula (1) and obtain the fatigue effect constant that flashboard sealing washer 9 is relevant with the thermodynamics temperature, simultaneously, set up the pressure that force sensor is used for detecting the flashboard sealing washer 9 receives, set up the timer and be used for recording the time that flashboard sealing washer 9 is extrudeed, then according to the calculated result of formula (1), the pressure that force sensor detected the flashboard sealing washer 9 receives, the time that the flashboard sealing washer 9 was extruded that the timer recorded and formula (2) can calculate and obtain the flashboard sealing washer 9 fatigue state coefficient, when flashboard sealing washer 9 fatigue state coefficient exceedes the benchmark value scope that predetermines, the controller control alarm is reported to the police, the valve is overhauled by informing related workers to avoid accidents, the alarm is controlled to alarm through the controller, the related workers are timely informed to overhaul, and the intelligence of the device is increased.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The utility model provides a double-gate board wedge gate valve which characterized in that: the method comprises the following steps: the valve comprises a valve body (1), a flow channel (2), a closing member (3), a driving member (4), a bypass assembly (5) and a valve cover (6);
the flow channel (2) is arranged inside the valve body (1), the closing element (3) is used for controlling the opening and closing of the flow channel (2), the driving element (4) is used for providing driving power for the action of the closing element (3), the valve body (1) right end is provided with the valve cover (6), the bypass assembly (5) is arranged outside the valve cover (6) and connected with the valve cover (6), and the bypass assembly (5) is used for controlling an external air source to input low-pressure inert gas to the valve cover (6) so as to control the closing of the flow channel (2) in the valve body (1) in a linkage mode with the driving element (4).
2. The double-gate wedge gate valve according to claim 1, wherein: the upper end and the lower end of the valve body (1) are respectively provided with an inlet end and an outlet end, and the inlet end and the outlet end are communicated through the flow channel (2).
3. A double-gate wedge gate valve in accordance with claim 2, wherein: the shutter (3) comprises: the valve comprises a valve seat (7), a flashboard (8), a flashboard sealing ring (9), a valve body guide groove (18) and a flashboard guide rail (19);
the valve seat (7) is fixedly arranged on the side wall in the valve body (1), and the valve seat (7) is provided with a through hole (21) which penetrates through the left end face and the right end face of the valve body (1) and allows medium to circulate;
the valve body guide groove (18) is fixed on the outer side wall of the right end surface of the valve body (1) and is positioned in a cavity formed between the valve cover (6) and the valve body (1), and the flashboard guide rail (19) is arranged in the valve body guide groove (18);
flashboard (8) set up two, and the symmetry set up in both sides about through-hole (21), flashboard (8) pass through flashboard guide rail (19) sliding connection in valve body guide way (18), there is flashboard sealing washer (9) through bolted connection on flashboard (8), flashboard sealing washer (9) are used for when the valve is closed right flashboard (8) with valve seat (7) laminating is sealed.
4. A double-gate wedge gate valve in accordance with claim 3, wherein: and a bottom cover (20) is fixed at the through hole of the left end surface of the valve body (1) through a bolt.
5. A double-gate wedge gate valve in accordance with claim 3, wherein: the drive member (4) comprises: the device comprises a wedge block (10), a valve rod (11), a bracket (12) and a driving device (13);
the wedge block (10) is arranged on the inner sides of the two gate plates (8), the inclined surface of the wedge block (10) is attached to the gate plates (8), and the right end of the wedge block (10) is fixedly connected to one end of the valve rod (11);
support (12) cover is located outside valve rod (11), and is fixed in valve gap (6) right-hand member, support (12) right-hand member fixedly connected with drive arrangement (13), drive arrangement (13) with valve rod (11) are connected for control valve rod (11) motion.
6. The double-gate wedge gate valve according to claim 5, wherein: the bypass assembly (5) comprises: the device comprises a bent pipe (14), a driving connecting block (15), a reset stop valve (16) and an actuator connecting block (17);
drive connecting block (15) one end connect in valve rod (11), drive connecting block (15) other end with executor connecting block (17) one end joint, executor connecting block (17) other end with stop valve (16) that reset are connected, return bend (14) are connected valve gap (6) inside, stop valve (16) and outside air supply reset.
7. A double-gate wedge gate valve in accordance with claim 2, wherein: the inlet end department of valve body (1) upper end still is provided with filter equipment, filter equipment with valve body (1) is fixed, filter equipment includes: the filter comprises a filter device shell (301), a filter screen component (302), a limiting chute (303) and a filter screen replacing device (304);
filter equipment casing (301) with valve body (1) import end department is fixed, filter equipment casing (301) inside wall is fixed with spacing spout (303), filter screen subassembly (302) sliding connection in spacing spout (303), filter equipment casing (301) are provided with filter screen change device (304), just filter screen change device (304) with filter screen subassembly (302) are connected.
8. The double-gate wedge gate valve according to claim 7, wherein: the screen changer (304) comprises:
the device comprises a guide plate (30401), a first sliding block (30402), a first sliding chute (30403), a resilience power arm (30404), a spring connecting hole (30405), a first linkage plate (30406), a first hinge shaft (30407), a first spring (30408), a second hinge shaft (30409), a second linkage plate (30410), a first fixed shaft (30411), a second spring (30412), a second fixed shaft (30413), a third hinge shaft (30414), a resilience driving lever (30415), a resilience shifting block (30416), a fourth hinge shaft (30417), a clamping protrusion (30418), a sector toothed plate (30419), a driving arm (30420), a fifth hinge shaft (30421), a second sliding block (30422), a sixth hinge shaft (30423), a fixed plate (30424), a groove (30425), a third sliding block (30426), a fourth fixed shaft (30427) and a third spring (30428);
the guide plate (30401) is fixed with the filtering device shell (301), and the first sliding groove (30403) is vertically arranged on the guide plate (30401);
the filter screen assembly (302) is fixed to one end of the fixing plate (30424) penetrating through the filtering device casing (301), the other end of the fixing plate (30424) is connected to the second sliding block (30422) through the sixth hinge shaft (30423), the second sliding block (30422) is slidably connected to the first sliding groove (30403), and the fixing plate (30424) is provided with the groove (30425);
the first sliding block (30402) is connected in the first sliding chute (30403) in a sliding manner, the first sliding block (30402) is located below the second sliding block (30422), the first sliding block (30402) is connected with the driving arm (30420) through the fifth hinge shaft (30421), one end of the driving arm (30420) is located in the groove (30425), and the other end of the driving arm (30420) is rotatably connected with a sector toothed plate (30419) through the third fixed shaft (30426);
the third spring (30428) is further arranged between the driving arm (30420) and the sector-shaped toothed plate (30419), the middle of the third spring (30428) is sleeved on the third fixed shaft (30426), one end of the third fixed shaft (30426) is clamped at the edge of the sector-shaped toothed plate (30419), and the other end of the third fixed shaft (30426) is connected with the driving arm (30420) through the fourth fixed shaft (30427);
the rebounding driving lever (30415) is arranged on one side of the sector-shaped toothed plate (30419), one end of the rebounding driving lever (30415) is hinged to the driving arm (30420) through the third hinge shaft (30414), the clamping protrusion (30418) is arranged on one side, close to the sector-shaped toothed plate (30419), of the rebounding driving lever (30415), and the clamping protrusion (30418) is meshed with the sector-shaped toothed plate (30419);
the other end of the rebound shift lever (30415) is connected with the rebound shift block (30416) through the fourth hinged shaft (30417);
the second spring (30412) is arranged on the opposite side of the clamping protrusion (30418), the middle of the second spring (30412) is connected to the driving arm (30420) through the second fixed shaft (30413), one end of the second spring (30412) is clamped with the rebounding deflector rod (30415), and the other end of the second spring (30412) is connected to the driving arm (30420) through the first fixed shaft (30411) fixed to the driving arm (30420);
one end of the rebounding power arm (30404) is fixed to the guide plate (30401), the middle of the rebounding power arm (30404) is connected with the first linkage plate (30406) through the first hinge shaft (30407), one end of the first linkage plate (30406) is provided with the spring connecting hole (30405), one end of the first spring (30408) is fixed to the spring connecting hole (30405), and the other end of the first spring (30408) is fixed to the other end of the rebounding power arm (30404);
the other end of the first linkage plate (30406) is hinged with one end of the second linkage plate (30410) through a second hinge shaft (30409), and the other end of the second linkage plate (30410) is fixed with the sector toothed plate (30419).
9. A double-gate wedge gate valve in accordance with claim 2, wherein: the exit end department of valve body (1) lower extreme still is provided with runner change detection device, runner change detection device includes:
the device comprises a circulation cavity (401), a power bin (402), a rotating arm (403), a motor (404), a transmission shaft (405), a driving gear (406), a ring gear (407), a fifth fixed shaft (408), a seventh hinged shaft (409), a detection plate (410), a fixed bottom plate (411), a limiting pipe (412) and a second sliding groove (413);
one side of the circulation cavity (401) is fixed with an outlet end at the lower end of the valve body (1), the power bin (402) is of an annular structure, the circulation cavity (401) is arranged between the power bins (402), the motor (404) is fixed on the inner wall of the power bin (402), the motor (404) is electrically connected with a power controller, a torque sensor is arranged outside the output end of the motor (404), the torque sensor is electrically connected with the power controller, the output end of the motor (404) is fixed with one end of the transmission shaft (405), the other end of the transmission shaft (405) is fixed on the driving gear (406), and the transmission shaft (405) and the driving gear (406) are both located in the power bin (402);
the other side of the circulation cavity (401) is fixedly provided with the fixed bottom plate (411), the fixed bottom plate (411) is annular, the upper end of the fixed bottom plate (411) is fixedly provided with the limiting pipe (412), the inner diameter of the limiting pipe (412) is the same as that of the fixed bottom plate (411), and the outer diameter of the limiting pipe (412) is smaller than that of the fixed bottom plate (411);
the annular gear (407) is sleeved outside the limiting pipe (412), and the outer edge of the annular gear (407) extends into the power bin (402) and is meshed with the driving gear (406);
the side, far away from the valve body (1), of the limiting pipe (412) is connected with the rotating force arm (403) through the seventh hinge shaft (409), one end of the rotating force arm (403) is fixedly provided with the detection plate (410), the other end of the rotating force arm (403) is provided with the second sliding groove (413), one end of the fifth fixing shaft (408) is fixed to the annular gear (407), and the other end of the fifth fixing shaft (408) is slidably connected into the second sliding groove (413).
CN202110901644.8A 2021-08-06 2021-08-06 Double-gate wedge gate valve Pending CN113639061A (en)

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