CN113639061B - Double-flashboard wedge gate valve - Google Patents

Double-flashboard wedge gate valve Download PDF

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Publication number
CN113639061B
CN113639061B CN202110901644.8A CN202110901644A CN113639061B CN 113639061 B CN113639061 B CN 113639061B CN 202110901644 A CN202110901644 A CN 202110901644A CN 113639061 B CN113639061 B CN 113639061B
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CN
China
Prior art keywords
valve
fixed
valve body
driving
plate
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Application number
CN202110901644.8A
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Chinese (zh)
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CN113639061A (en
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
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Jiangsu Shengtai Valve Co ltd
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Priority to CN202110901644.8A priority Critical patent/CN113639061B/en
Publication of CN113639061A publication Critical patent/CN113639061A/en
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Publication of CN113639061B publication Critical patent/CN113639061B/en
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Classifications

    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sliding Valves (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a double-flashboard wedge gate valve, which comprises: the valve comprises a valve body, a flow passage, 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 member is used for controlling the opening and closing of the flow passage, the driving member is used for providing driving power for the action of the closing member, 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 member. The double-flashboard wedge gate valve provided by the invention has a double-flashboard 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 is overcome, and the flashboard can flexibly move after the wedge block moves; the valve is controlled to input low-pressure inert gas auxiliary seal through valve rod limit when closed, and simultaneously the valve rod limit control cuts off the input of external gas source when open.

Description

Double-flashboard wedge gate valve
Technical Field
The invention relates to the field of gate valves, in particular to a double-gate wedge gate valve.
Background
The gate valve is a shutter, the moving 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. The gate valve is sealed by contact between the valve seat and the gate plate, and typically the sealing surface will be clad with a metal material to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate plate has a rigid gate plate and an elastic gate plate, and the gate valve is divided into a rigid gate valve and an elastic gate valve according to the difference of the gate plates. .
In order to effectively cut off the fluid in the pipeline, the pipeline is provided with a gate valve, and because the pipeline is complex and the pipeline has higher pressure, the gate valve is also highly required, and the existing gate valve is mostly closed only through a driving control gate plate, so that the sealing is unreliable easily and the use requirement cannot be well met.
Disclosure of Invention
The invention aims to provide a double-gate wedge gate valve, wherein the gate of the gate valve is controlled to be closed through a driving piece and a bypass assembly, so that the problems in the prior art are solved.
In order to achieve the above object, the present invention provides a dual gate wedge gate valve, comprising: the valve comprises a valve body, a flow passage, a closing member, a driving member, a bypass assembly and a valve cover;
the valve body is internally provided with the runner, the closing member is used for controlling the opening and closing of the runner, the driving member is used for providing driving power for the action of the closing member, 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 so as to control the closing of the runner in the valve body in a linkage manner with the driving member.
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 by the flow channel.
Preferably, the closing member includes: valve seat, flashboard sealing ring, valve body guide groove and flashboard guide rail;
The valve seat is fixedly arranged on the side wall of the inner part of the valve body, and is provided with a through hole which penetrates through the left end face and the right end face of the valve body and allows medium to circulate;
The valve body guide groove is fixed on the outer side wall of the right end face 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, be connected with through the bolt connection on the flashboard sealing washer, the flashboard sealing washer is used for right 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 bolts.
Preferably, the driving member includes: wedge block, valve rod, support and driving device;
The wedge blocks are arranged on the inner sides of the two flashboards, the inclined planes of the wedge blocks are attached to the flashboards, and the right ends of the wedge blocks are fixedly connected to one end of the valve rod;
The support sleeve is arranged outside the valve rod and is fixed at the right end of the valve cover, the right end of the support is fixedly connected with a driving device, and the driving device is 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;
one end of the driving connecting block is connected to the valve rod, the other end of the driving connecting block is clamped with one end of the actuator connecting block, the other end of the actuator connecting block is connected with the reset stop valve, and the bent pipe is connected with the inside of the valve cover, the reset stop valve and an external air source.
Preferably, the inlet end of the upper end of the valve body is further provided with a filtering device, the filtering device is fixed with the valve body, and the filtering device comprises: the device comprises a filtering device shell, a filtering net assembly, a limiting chute and a filtering net replacing device;
The filter device shell is fixed with the inlet end of the valve body, the limiting chute is fixed on the inner side wall of the filter device shell, the filter screen assembly is slidably connected in the limiting chute, the filter device shell is provided with a filter screen replacement device, and the filter screen replacement device is connected with the filter screen assembly.
Preferably, the screen changer includes:
The device comprises a guide plate, a first sliding block, a first sliding groove, a rebound power arm, a spring connecting hole, a first linkage plate, a first hinge shaft, a first spring, a second hinge shaft, a second linkage plate, a first fixed shaft, a second spring, a second fixed shaft, a third hinge shaft, a rebound deflector rod, a rebound deflector block, a fourth hinge shaft, a clamping protrusion, a sector toothed plate, a driving arm, a fifth hinge shaft, a second sliding block, a sixth hinge 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 filter device shell, and the first sliding groove is vertically arranged on the guide plate;
The filter screen assembly is fixed with one end of the fixing plate penetrating through the shell of the filter device, the other end of the fixing plate is connected with the second sliding block through the sixth hinge shaft, the second sliding block is connected in the first sliding groove in a sliding manner, and the groove is formed in the fixing plate;
The first sliding groove is slidably connected with the first sliding block, the first sliding block is positioned 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 positioned in the groove, and the other end of the driving arm is rotatably connected with a sector toothed plate through the third fixing shaft;
the third spring is further arranged between the driving arm and the fan-shaped 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 at the edge of the fan-shaped toothed plate, and the other end of the third fixing shaft is connected with the driving arm through the fourth fixing shaft;
One side of the sector toothed plate is provided with the rebound deflector rod, one end of the rebound deflector rod is hinged to the driving arm through the third hinge shaft, one side of the rebound deflector rod, which is close to the sector toothed plate, is provided with the clamping protrusion, and the clamping protrusion 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 hinge shaft;
the opposite sides of the clamping protrusions are provided with second springs, the middle parts of the second springs are connected with the driving arms through second fixing shafts, one ends of the second springs are clamped with the rebound deflector rods, and the other ends of the second springs are connected with the driving arms through first fixing shafts fixed to the driving arms;
One end of the rebound power arm is fixed on the guide plate, the middle part of the rebound 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 on the other end of the rebound power arm;
The other end of the first linkage plate is hinged with one end of the second linkage plate through a second hinge shaft, and the other end of the second linkage plate is fixed with the sector toothed plate.
Preferably, the outlet end of the lower end of the valve body is further provided with a flow passage change detection device, and the flow passage change detection device comprises:
the device comprises a circulation cavity, a power bin, a rotating power arm, a motor, a transmission shaft, a driving gear, a ring gear, a fifth fixed shaft, a seventh hinge shaft, a detection plate, a fixed bottom plate, a limiting pipe and a second chute;
One side of the circulation cavity is fixed with the outlet end of the lower end of the valve body, the power bin is of an annular structure, the circulation cavity is arranged between the power bins, the motor is fixed on the inner wall of the power bin, the motor is electrically connected with the power supply controller, a torque sensor is arranged outside the output end of the motor, the torque sensor is electrically connected with the power supply 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 bin;
The fixed bottom plate is fixed on the other side of the circulation cavity, the fixed bottom plate is annular, the limiting pipe is fixed at the upper end of the fixed bottom plate, the inner diameter of the limiting pipe is the same as the inner diameter of the fixed bottom plate, and the outer diameter of the limiting pipe is smaller than the outer diameter 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 force arm through the seventh hinge shaft, one end of the rotating force arm is fixed with the detection plate, the other end of the rotating force arm is provided with the second sliding groove, one end of the fifth fixed shaft is fixed to the ring gear, and the other end of the fifth fixed shaft is connected in the second sliding groove in a sliding mode.
Drawings
FIG. 1 is a cross-sectional view of a main structure of the present invention;
FIG. 2 is a schematic side view of the body structure of the present invention;
FIG. 3 is a schematic view of the installation position of the filtering device of the present invention;
FIG. 4 is a schematic diagram of a screen changer according to the present invention;
FIG. 5 is a schematic view showing the installation position and structure of the flow channel change detecting device of the present invention;
FIG. 6 is a schematic view of a detecting state structure of a flow channel change detecting device according to the present invention;
FIG. 7 is a schematic view showing a stationary structure of a flow channel change detecting apparatus according to the present invention;
In the figure: 1. a valve body; 2. a flow passage; 3. a closing member; 4. a driving member; 5. a bypass assembly; 6. a valve cover; 7. a valve seat; 8. a flashboard; 9. a flashboard sealing ring; 10. wedge blocks; 11. a valve stem; 12. a bracket; 13. a driving device; 14. bending the pipe; 15. driving the connecting block; 16. resetting the stop valve; 17. an actuator connecting block; 18. a valve body guide groove; 19. a flashboard guide rail; 20. a bottom cover; 21. a through hole; 301. a filter housing; 302. a filter screen assembly; 303. limiting sliding grooves; 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 connection 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. a rebound deflector rod; 30416. rebound shifting block; 30417. a fourth hinge shaft; 30418. the clamping bulge; 30419. sector toothed plate; 30420. a driving 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 turning power arm; 404. a motor; 405. a transmission shaft; 406. a drive gear; 407. a ring gear; 408. a fifth fixed shaft; 409. a seventh hinge shaft; 410. a detection plate; 411. a fixed bottom plate; 412. a limiting tube; 413. and a second chute.
Detailed Description
The description herein as relating to "first," "second," etc. is for descriptive purposes only and is not intended to be specifically construed as a sequential or ordinal meaning nor is it intended to be limiting, but is merely intended to distinguish between components or operations that are described in the same technical term and is not to be interpreted as indicating or implying a relative importance or implying that the number of technical features indicated is not necessarily limited. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the embodiments may be combined with each other, but it is necessary to base that a person skilled in the art can implement the combination of technical solutions, when the combination of technical solutions contradicts or cannot be implemented, should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present invention.
Example 1
Referring to fig. 1-2, an embodiment of the present invention is provided: the utility model provides a two flashboard wedge gate valves which characterized in that: comprising the following steps: a valve body 1, a flow passage 2, a closing member 3, a driving member 4, a bypass assembly 5 and a valve cover 6;
The inside runner 2 that sets up of valve body 1, closure member 3 is used for controlling the opening and closing of runner 2, driving piece 4 is used for the action of closure member 3 provides driving power, valve body 1 right-hand member is provided with valve gap 6, bypass subassembly 5 set up in valve gap 6 is outside, and with valve gap 6 is connected, bypass subassembly 5 is used for controlling the entering valve gap 6 of outside air supply input low pressure inert gas, and then with the closure of the interior runner 2 of driving piece 4 coordinated control valve body 1.
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, the shutter 3 comprises: valve seat 7, flashboard 8, flashboard sealing ring 9, valve body guiding groove 18, flashboard guide rail 19;
the valve seat 7 is fixedly arranged on the inner side wall of 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 flow;
the valve body guide groove 18 is fixed on the outer side wall of the right end face 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 two flashboards 8 are symmetrically arranged on the upper side and the lower side of the through hole 21, the flashboard 8 is slidably connected into the valve body guide groove 18 through the flashboard guide rail 19, the flashboard 8 is connected with the flashboard sealing ring 9 through bolts, and the flashboard sealing ring 9 is used for sealing the flashboard 8 and the valve seat 7 in a fitting way when the valve is closed.
Preferably, a bottom cover 20 is fixed at the through hole of the left end surface of the valve body 1 through bolts.
Preferably, the driving member 4 includes: wedge 10, valve rod 11, bracket 12, driving device 13;
the wedge blocks 10 are arranged on the inner sides of the two flashboards 8, inclined planes of the wedge blocks 10 are attached to the flashboards 8, and the right ends of the wedge blocks 10 are fixedly connected to one end of the valve rod 11;
the support 12 is sleeved outside the valve rod 11 and is 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 valve rod 11 to move. The driving device can adopt the existing device for driving the valve rod to move;
preferably, the bypass assembly 5 comprises: the pipe bending device comprises a pipe bending 14, a driving connecting block 15, a reset stop valve 16 and an actuator connecting block 17;
One end of the driving connecting block 15 is connected to the valve rod 11, the other end of the driving connecting block 15 is clamped with one end of the actuator connecting block 17, the other end of the actuator connecting block 17 is connected with the reset stop valve 16, and the elbow 14 is connected with the inside of the valve cover 6, the reset stop valve 16 and an external air source. The driving connecting block is connected with the valve rod, and the other end of the driving connecting block extends to the reset stop valve, and the driving connecting block is used for controlling the linkage state of the reset stop valve and the valve rod 11 under the action of the valve rod (specifically, alternatively, the first valve rod of the reset stop valve can be connected with the valve rod 11 through the driving connecting block 15 and the actuator connecting block 17 to realize linkage control); and the reset stop valve is connected with the driving connecting block and controls the opening and closing of an external air source.
The working principle and the beneficial effects of the technical scheme are as follows: the invention relates to a closure member 3 for controlling the opening and closing of a flow passage in a valve body, a driving member 4 is used for providing driving power for the action of the closure member, a bypass assembly 5 is used for controlling the entry of low-pressure inert gas from an external gas source so as to control the closing of the flow passage in the valve body in a linkage manner with the driving member 4, a wedge block 10 applies a closing force to a flashboard 8 when the valve is closed, and when the valve is opened, because the wedge block 10 moves rightwards (the wedge block 10 is driven to move rightwards by the valve rod), and the wedge block 10 is connected with the flashboard 8, so that the flashboard 8 is dragged to move, the driving connecting block 15 controls the linkage state of the reset stop valve 16 and the valve rod 11 by the driving connecting block 15 under the action of the valve rod 11, and further controls the opening and closing of an external air source, the double-flashboard wedge gate valve has 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 is overcome, and the flashboard can flexibly move after the wedge block moves; the valve is controlled to input low-pressure inert gas auxiliary seal (auxiliary seal under the action of gas pressure) through the valve rod limit when being closed, and simultaneously, the valve rod limit is controlled to cut off the input of the external gas source when being opened. The invention meets the cutting-off requirement of the reactor, has unique structure, reliable sealing, flexible action and long service life, and is especially suitable for the working conditions of high temperature and large temperature difference.
The invention controls the closing of the gate plate of the gate valve through the driving piece and the bypass assembly, thereby facilitating the reliable closing (sealing) of the gate plate.
Example 2
Referring to fig. 3-4, on the basis of the above embodiment 1, a filter device is further disposed at the inlet end of the upper end of the valve body 1, and the filter device is fixed to the valve body 1, and includes: a filter device housing 301, a filter screen assembly 302, a limit chute 303, and a filter screen changing device 304;
The filter device shell 301 is fixed with the inlet end of the valve body 1, the limiting chute 303 is fixed on the inner side wall of the filter device shell 301, the filter screen assembly 302 is slidably connected in the limiting chute 303, the filter device shell 301 is provided with a filter screen replacing device 304, and the filter screen replacing device 304 is connected with the filter screen assembly 302.
Preferably, the screen changer 304 includes:
A guide plate 30401, a first slider 30402, a first slide groove 30403, a rebound power arm 30404, a spring connection hole 30505, a first linkage plate 30406, a first hinge shaft 30107, a first spring 3008, a second hinge shaft 3009, a second linkage plate 30410, a first fixed shaft 3041, a second spring 30112, a second fixed shaft 3043, a third hinge shaft 30414, a rebound dial rod 30115, a rebound dial block 30116, a fourth hinge shaft 30117, a snap-in projection 30118, a sector toothed plate 30419, a driving arm 30420, a fifth hinge shaft 30121, a second slider 30122, a sixth hinge shaft 30423, a fixing plate 30416, a groove 30125, a third fixed shaft 3046, a fourth fixed shaft 30427, and a third spring 30428;
The guide plate 30401 is fixed to the filter housing 301, and the first chute 30403 is vertically disposed on the guide plate 30401;
The filter screen assembly 302 is fixed to one end of the fixing plate 30414 passing through the filter housing 301, the other end of the fixing plate 30414 is connected to the second sliding block 30122 through the sixth hinge shaft 3023, the second sliding block 30122 is slidably connected to the first sliding groove 30403, and the groove 30240 is provided on the fixing plate 30416;
the first sliding groove 30403 is slidably connected with the first sliding block 30402, 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 3021, one end of the driving arm 30420 is located in the groove 30125, and the other end of the driving arm 30420 is rotatably connected with a sector toothed plate 30419 through the third fixing shaft 3026;
the third spring 30428 is further disposed between the driving arm 30420 and the sector toothed plate 30419, the middle portion of the third spring 30428 is sleeved on the third fixing shaft 3046, one end of the third fixing shaft 3046 is clamped to the edge of the sector toothed plate 30419, and the other end of the third fixing shaft 30426 is connected with the driving arm 30420 through the fourth fixing shaft 30427;
the resilient deflector 3049 is arranged on one side of the sector toothed plate 30419, one end of the resilient deflector 3049 is hinged to the driving arm 30420 through the third hinge shaft 30414, the resilient deflector 3049 is provided with the clamping protrusion 30118 on one side of the sector toothed plate 30419, which is close to the clamping protrusion 30118, and the clamping protrusion 30118 is meshed with the sector toothed plate 30419;
the other end of the rebound dial rod 30115 is connected with the rebound dial block 30116 through the fourth hinge shaft 30117;
the opposite side of the clamping protrusion 30118 is provided with the second spring 30112, the middle part of the second spring 30112 is connected to the driving arm 30420 through the second fixing shaft 3043, one end of the second spring 30112 is clamped with the rebound shifter 30115, and the other end of the second spring 30112 is connected to the driving arm 30420 through the first fixing shaft 3041 fixed to the driving arm 30420;
One end of the rebound power arm 30404 is fixed to the guide plate 30401, the middle part of the rebound power arm 30404 is connected with the first linkage plate 30406 through the first hinge shaft 30107, one end of the first linkage plate 30406 is provided with the spring connection hole 30505, one end of the first spring 3008 is fixed to the spring connection hole 30305, and the other end is fixed to the other end of the rebound 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 3009, and the other end of the second linkage plate 30410 is fixed to the sector 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 the filtering device, impurities are filtered through the liquid entering the valve through the filtering device, the influence of the impurities on the valve is prevented, the filtering effect is affected when the filtering screen component 302 of the filtering device is inevitably damaged after being used for a long time, the filtering screen replacement device 304 is arranged, the workload can be effectively reduced, the filtering screen component 302 is driven to move upwards through downwards pushing the tail end (one end far away from the filtering screen component 302) of the driving arm 30420 under the action of the fixing plate 30416 and the groove 30125, the filtering screen component 302 extends out of the filtering device shell 301 to facilitate replacement, at the moment, the clamping protrusion 30118 is meshed with teeth on the sector toothed plate 30419, the relative position is static, the distance between the first hinging shaft 30307 and the third fixing shaft 30426 is fixed, the driving arm 30420 is static relative to the guide plate 30401 under the mutual extrusion of the third spring 30428 and the second spring 30212, the driving arm 30420 is convenient for the operation of workers, the filtering screen component 302 can only move vertically under the limitation of the first sliding groove 30103, and after the replacement is completed, the sector toothed plate 30419 is only required to be stirred to be separated with the sector toothed plate 30419, and the filtering screen component is separated from the first sliding plate 30412 under the action of the driving arm 30412, and the filtering screen component is restored to the original position.
Example 3
Referring to fig. 5-7, on the basis of the above embodiment 1, a flow passage change detecting device is further provided at the outlet end of the lower end of the valve body 1, and the flow passage change detecting device includes:
The circulation cavity 401, the power bin 402, the rotating force arm 403, the motor 404, the transmission shaft 405, the driving gear 406, the ring gear 407, the fifth fixed shaft 408, the seventh hinge shaft 409, the detection plate 410, the fixed bottom plate 411, the limiting pipe 412 and the second sliding chute 413;
One side of the circulation cavity 401 is fixed at the outlet end of the lower end of the valve body 1, the power bins 402 are in annular structures, 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 the power controller, a torque sensor is arranged outside the output end of the motor 404 (when the detection plate 410 is in contact with the circulation cavity 401, the detection plate 410 stops rotating around the seventh hinge shaft 409, the motor 404 still operates at the moment and generates a larger torque to act on the transmission shaft 405, when the torque is larger than a preset torque, the power controller controls the motor to stop), 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 positioned in the power bins 402;
The fixed bottom plate 411 is fixed on the other side of the flow 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 the inner diameter of the fixed bottom plate 411, and the outer diameter of the limiting pipe 412 is smaller than the outer diameter of the fixed bottom plate 411;
The limiting pipe 412 is sleeved with the ring gear 407, and the outer edge of the ring gear 407 extends into the power bin 402 and is meshed with the driving gear 406;
The limiting tube 412 is connected to the rotating force arm 403 through the seventh hinge shaft 409, one end of the rotating force arm 403 is fixed with the detecting 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 ring 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, the unavoidable impurities in the valve body 1 can generate accumulation part, the passing efficiency of the fluid in the gate valve is influenced, a runner change detection device is arranged at the outlet end of the lower end of the valve body 1, the diameter of the flow channel 2 is detected, under the drive of the motor 404, the driving gear 406 rotates, the ring gear 407 is meshed with the driving gear 406, the ring gear 407 rotates, the larger transmission ratio between the driving gear 406 and the ring gear 407 is caused, the stable output of the motor 404 is ensured, the rotation of the ring gear 407 drives the fifth fixed shaft 408 fixed on the ring gear 407 to rotate along with the rotation, the fifth fixed shaft 408 is positioned in the second chute 413 and slides in the second fixed shaft, when the ring gear 407 rotates, the rotating power arm 403 rotates around the seventh hinge shaft 409 under the action of the fifth fixed shaft 408, the detecting plate 410 moves in the cavity 401, when the driving plate 410 contacts with the flow cavity 401, the 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 flow channel 401 is calculated, and whether the flow channel 2 can be blocked or not, and the current flow channel 2 can be obtained through calculation of the flow channel 2 can be judged.
Example 4
On the basis of the above embodiment 1, the device for detecting the fatigue state of the shutter sealing ring 9 is further included, and the device for detecting the fatigue state of the shutter sealing ring 9 includes:
the temperature sensor is arranged on the inner wall of the valve body 1 and is used for detecting the temperature of the working environment of the flashboard sealing ring 9;
A force sensor arranged in the gate sealing ring 9 and used for detecting the pressure between the gate 8 and the valve seat 7 born by the gate sealing ring 9;
a timer for recording the time when the shutter seal 9 is pressed;
An alarm located on the valve cover 6;
the controller, the controller respectively with temperature sensor, force transducer, time-recorder and alarm electric connection, the controller is based on temperature sensor, force transducer, time-recorder control the alarm work includes:
step 1: the controller obtains a fatigue effect constant of the shutter sealing ring 9 related to thermodynamic temperature based on the temperature sensor and the formula (1):
Wherein N is a fatigue effect constant of the shutter sealing ring 9 related to thermodynamic temperature, W is an activation energy of the shutter sealing ring 9 preset, here, refers to energy required for a material molecule of the shutter sealing ring 9 to be converted from a normal state to an active state in which chemical reaction is easy to occur, B is a gas constant, T is an ambient temperature around the shutter sealing ring 9 detected by a temperature sensor, exp is an exponential function based on a natural constant e, m is a weight of the shutter sealing ring 9, σ is an aging reaction rate constant of the shutter sealing ring 9, μ is a fluctuation compensation coefficient of the ambient temperature around the shutter sealing 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 gate sealing ring 9 based on the force sensor, the timer and the formula (2):
Wherein, For the fatigue state coefficient of the gate sealing ring 9, F is the pressure borne by the gate sealing ring 9 detected by a force sensor, a is the rockwell hardness of the gate sealing ring 9, G is the tensile strength of the gate sealing ring 9, e is a natural constant, the value is 2.72, epsilon is the compression ratio of the gate sealing ring 9 when the valve is closed, S is the compression area of the gate 8 and the valve seat 7 on the gate sealing ring 9 when the gate valve is closed, Z is an exponential factor (the frequency factor of the gate sealing ring 9), t is the time recorded by a timer when the gate sealing ring 9 is compressed, and t 0 is unit time;
When the fatigue state coefficient of the flashboard sealing ring 9 exceeds a preset reference value range, the controller controls the alarm to alarm.
In the method, in the process of the invention,The fatigue effect constant of the shutter sealing ring 9 related to the thermodynamic temperature increases along with the temperature, and the fatigue effect constant of the shutter sealing ring 9 related to the thermodynamic temperature is corrected according to the precision coefficient of the temperature sensor, the aging reaction rate constant of the shutter sealing ring 9 and the like to obtain a final result,Representing that the shutter sealing ring 9 obtains the fatigue state coefficient of the shutter sealing ring 9 based on relevant parameters of the shutter sealing ring 9, such as hardness, tensile strength and frequency factor, and the external effect such as the applied pressure, and the fatigue state coefficient of the shutter sealing ring 9 is positively correlated with the fatigue effect constant related to the thermodynamic temperature of the shutter sealing ringThe relationship between the time of extrusion of the gate seal 9 and the fatigue state coefficient of the gate seal 9 is shown, and the fatigue state coefficient of the gate seal 9 increases with the increase of the extrusion time.
Assuming that the ambient temperature around the shutter sealing ring 9 detected by the temperature sensor of the shutter sealing ring 9 is 30K, that is, t=30, the preset activation energy of the shutter sealing ring 9 is 10J, the gas constant is 8.314J/(mol×k), the weight of the shutter sealing ring 9 is 0.1kg, the aging reaction rate constant of the shutter sealing ring 9 is 1, the fluctuation compensation coefficient of the ambient temperature around the shutter sealing ring 9 detected by the temperature sensor is 0.9, and the precision coefficient of the temperature sensor is 0.98, the fatigue effect constant n=e 3.09 (e is a natural constant) related to the thermodynamic temperature of the shutter sealing ring 9 can be obtained through calculation.
The detection value F=1N of the force sensor, the Rockwell hardness A=40 of the gate sealing ring 9, the tensile strength G=10pa of the gate sealing ring 9, the compression rate epsilon=0.5 of the gate sealing ring 9 when the valve is closed, the extruded area S=10cm 2 of the gate sealing ring 9, the frequency factor Z of the gate sealing ring 9 is 0.3, the time t=100S recorded by a timer when the gate sealing ring 9 is extruded is 1S in unit time t 0, and the fatigue state coefficient of the gate sealing ring 9 is obtained through calculation according to the formula (2)(Taking three decimal places), and calculating the fatigue state coefficient of the flashboard sealing ring 9And the alarm is larger than a preset reference value range of 0.9-1, and the controller controls the alarm to send out an alarm prompt.
The beneficial effects of the technical scheme are as follows: the temperature sensor is used for recording the ambient temperature around the gate sealing ring 9, the fatigue effect constant related to the thermodynamic temperature of the gate sealing ring 9 is obtained through calculation by detecting the ambient temperature around the gate sealing ring 9 and the formula (1), meanwhile, the force sensor is used for detecting the pressure born by the gate sealing ring 9, the timer is used for recording the extruded time of the gate sealing ring 9, then the fatigue state coefficient of the gate sealing ring 9 can be obtained through calculation according to the calculation result of the formula (1), the pressure born by the gate sealing ring 9 detected by the force sensor, the extruded time recorded by the timer and the formula (2), when the fatigue state coefficient of the gate sealing ring 9 exceeds a preset reference value range, the controller controls the alarm to alarm so as to inform related staff of overhauling the valve, accidents are avoided, the controller is used for controlling the alarm to alarm, the relevant staff is timely informed of overhauling, 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 characteristics 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 (7)

1. The utility model provides a two flashboard wedge gate valves which characterized in that: comprising the following steps: the valve comprises a valve body (1), a flow passage (2), a closing member (3), a driving member (4), a bypass assembly (5) and a valve cover (6);
The valve is characterized in that the flow passage (2) is arranged in the valve body (1), the closing member (3) is used for controlling the flow passage (2) to be opened and closed, the driving member (4) is used for providing driving power for the action of the closing member (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 is 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) so as to control the closing of the flow passage (2) in the valve body (1) in a linkage manner with the driving member (4);
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);
the outlet end department of valve body (1) lower extreme still is provided with runner change detection device, runner change detection device includes:
The circulating cavity (401), the power bin (402), the rotating force arm (403), the motor (404), the transmission shaft (405), the driving gear (406), the ring gear (407), the fifth fixed shaft (408), the seventh hinge shaft (409), the detection plate (410), the fixed bottom plate (411), the limiting pipe (412) and the second chute (413);
one side of the circulation cavity (401) is fixed with an outlet end of the lower end of the valve body (1), the power bins (402) are of annular structures, the circulation cavity (401) is arranged between the power bins (402), the motor (404) is fixed on the inner wall of each power bin (402), the motor (404) is electrically connected with the power supply controller, a torque sensor is arranged outside an output end of the motor (404), the torque sensor is electrically connected with the power supply controller, an 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 positioned in the power bins (402);
The other side of the circulation cavity (401) is fixed with the fixed bottom plate (411), the fixed bottom plate (411) is annular, the upper end of the fixed bottom plate (411) is fixed with the limiting pipe (412), the inner diameter of the limiting pipe (412) is the same as the inner diameter of the fixed bottom plate (411), and the outer diameter of the limiting pipe (412) is smaller than the outer diameter 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) stretches into the power bin (402) and is meshed with the driving gear (406);
The limiting tube (412) is far away from the valve body (1) side and is connected with the rotating force arm (403) through the seventh hinge shaft (409), one end of the rotating force arm (403) is fixed with the detection plate (410), the second sliding groove (413) is arranged at the other end of the rotating force arm (403), one end of the fifth fixed shaft (408) is fixed to the ring gear (407), and the other end of the fifth fixed shaft (408) is slidably connected in the second sliding groove (413).
2. The dual gate wedge gate valve of claim 1, wherein: the shutter (3) comprises: the valve seat (7), the flashboard (8), the flashboard sealing ring (9), the valve body guide groove (18) and the flashboard guide rail (19);
the valve seat (7) is fixedly arranged on the inner side wall of 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 flow;
The valve body guide groove (18) is fixed on the outer side wall of the right end face 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 valve body guide groove is formed in the upper side and the lower side of the through hole (21), two flashboards (8) are symmetrically arranged on the upper side and the lower side of the through hole (21), the flashboard (8) is connected to the valve body guide groove (18) in a sliding mode through a flashboard guide rail (19), the flashboard (8) is connected with a flashboard sealing ring (9) through bolts, and the flashboard sealing ring (9) is used for sealing the flashboard (8) and the valve seat (7) in a fitting mode when the valve is closed.
3. The dual gate wedge gate valve of claim 2, wherein: a bottom cover (20) is fixed at the through hole of the left end face of the valve body (1) through bolts.
4. The dual gate wedge gate valve of claim 2, wherein: the driving member (4) includes: wedge block (10), valve rod (11), bracket (12), driving device (13);
the wedge blocks (10) are arranged on the inner sides of the two flashboards (8), the inclined planes of the wedge blocks (10) are attached to the flashboards (8), and the right ends of the wedge blocks (10) are fixedly connected to one end of the valve rod (11);
The support (12) is sleeved outside the valve rod (11), and is 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 valve rod (11) to move.
5. The dual gate wedge gate valve of claim 4, wherein: the bypass assembly (5) comprises: the device comprises an elbow pipe (14), a driving connecting block (15), a reset stop valve (16) and an actuator connecting block (17);
One end of the driving connecting block (15) is connected to the valve rod (11), the other end of the driving connecting block (15) is clamped with one end of the actuator connecting block (17), the other end of the actuator connecting block (17) is connected with the reset stop valve (16), and the elbow (14) is connected with the inside of the valve cover (6), the reset stop valve (16) and an external air source.
6. The dual gate wedge gate valve of claim 1, 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: a filter device shell (301), a filter screen assembly (302), a limiting chute (303) and a filter screen replacing device (304);
The filter device comprises a valve body (1), and is characterized in that a filter device shell (301) is fixed at the inlet end of the valve body (1), a limiting chute (303) is fixed on the inner side wall of the filter device shell (301), a filter screen assembly (302) is slidably connected in the limiting chute (303), a filter screen replacement device (304) is arranged on the filter device shell (301), and the filter screen replacement device (304) is connected with the filter screen assembly (302).
7. The dual gate wedge gate valve of claim 6, wherein: the screen changer (304) includes:
A guide plate (30401), a first slider (30402), a first slide groove (30403), a rebound power arm (30404), a spring connection hole (30505), a first linkage plate (30406), a first hinge shaft (30307), a first spring (3008), a second hinge shaft (3009), a second linkage plate (30410), a first fixed shaft (3041), a second spring (30112), a second fixed shaft (3043), a third hinge shaft (30414), a rebound dial (30450), a rebound dial (30116), a fourth hinge shaft (30117), a snap-in protrusion (30118), a sector gear plate (30419), a driving arm (30420), a fifth hinge shaft (3021), a second slider (30422), a sixth hinge shaft (30423), a fixing plate (30218), a groove (30125), a third fixed shaft (3046), 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 with one end of the fixed plate (30416) penetrating through the filter device shell (301), the other end of the fixed plate (30416) is connected with the second sliding block (30122) through the sixth hinge shaft (30423), the second sliding block (30122) is connected in the first sliding groove (30403) in a sliding mode, and the groove (30240) is formed in the fixed plate (30416);
the first sliding groove (30403) is slidably connected with the first sliding block (30402), 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 hinging shaft (3021), one end of the driving arm (30420) is located in the groove (30525), and the other end of the driving arm (30420) is rotatably connected with a sector toothed plate (30419) through the third fixing shaft (30218);
The driving arm (30420) is further provided with a third spring (30428) between the driving arm and the sector toothed plate (30419), the middle part of the third spring (30428) is sleeved on the third fixing shaft (30426), one end of the third fixing shaft (30426) is clamped at the edge of the sector toothed plate (30419), and the other end of the third fixing shaft (30218) is connected with the driving arm (30420) through a fourth fixing shaft (30427);
One side of the sector toothed plate (30419) is provided with the rebound deflector rod (3049), one end of the rebound deflector rod (3049) is hinged to the driving arm (30420) through the third hinge shaft (30414), one side of the rebound deflector rod (3049) close to the sector toothed plate (30419) is provided with the clamping protrusion (3018), and the clamping protrusion (3018) is meshed with the sector toothed plate (30419);
The other end of the rebound deflector rod (30115) is connected with the rebound deflector block (30116) through the fourth hinge shaft (30117);
The opposite side of the clamping protrusion (30118) is provided with a second spring (30112), the middle part of the second spring (30112) is connected to the driving arm (30420) through a second fixed shaft (3043), one end of the second spring (30112) is clamped with the rebound deflector rod (30115), and the other end of the second spring (30112) is connected with the driving arm (30420) through a first fixed shaft (30111) fixed to the driving arm (30420);
one end of the rebound power arm (30404) is fixed on the guide plate (30401), the middle part of the rebound power arm (30404) is connected with the first linkage plate (30406) through the first hinge shaft (30307), one end of the first linkage plate (30406) is provided with the spring connecting hole (30505), one end of the first spring (30508) is fixed on the spring connecting hole (30505), and the other end of the first spring is fixed on the other end of the rebound 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 (3009), and the other end of the second linkage plate (30410) is fixed with the sector toothed plate (30419).
CN202110901644.8A 2021-08-06 2021-08-06 Double-flashboard wedge gate valve Active CN113639061B (en)

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CN114635980B (en) * 2022-01-24 2023-05-12 良工阀门集团有限公司 Triple offset butterfly valve with automatic compensation sealing function

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