CN110906013B - Compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions - Google Patents
Compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions Download PDFInfo
- Publication number
- CN110906013B CN110906013B CN201911142753.5A CN201911142753A CN110906013B CN 110906013 B CN110906013 B CN 110906013B CN 201911142753 A CN201911142753 A CN 201911142753A CN 110906013 B CN110906013 B CN 110906013B
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- valve
- worm
- pressure
- sealing
- box
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
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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
- 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
- F16K37/0008—Mechanical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
A compensating sealing butterfly valve with sequential linkage opening and closing pressure relief functions comprises a valve body, a valve shaft, a sealing pressure sleeve, a sealing ring, an annular pressure support, a perforation, a pressure inner passage, a pressure pipe, a box body, a box cover, a worm wheel and a worm rod, wherein the valve shaft is arranged in the valve body, the sealing pressure sleeve is arranged on an inner side opening of the valve body, the sealing ring is arranged between the sealing pressure sleeve and the valve body, the annular pressure support is arranged in the sealing ring, the perforation is arranged in the annular pressure support, the pressure inner passage is arranged on a wall surface corresponding to the perforation, the pressure inner passage is connected with the pressure pipe, the box body is arranged on one side of the valve body, the box cover is arranged on the other side of the box body, the worm wheel and the worm rod are arranged in the box body, the shaft sleeve and the belleville spring are arranged in one end of the top rod, the cylinder body is arranged on one side of the box body, the piston is provided with a piston rod and is contacted with the worm, the cylinder body is arranged on one side of the piston rod, the cylinder body is provided with a spring or gas in the other side of the piston, the cylinder body is arranged on one side of the spring, the through hole is arranged, and the through hole is communicated with the other end.
Description
Technical Field
The invention relates to a compensation type sealing butterfly valve, in particular to a compensation type sealing butterfly valve with sequential linkage on-off charging and discharging functions.
Background
The butterfly valve is widely applied to various pipeline control systems for opening and closing or flow regulation due to the characteristics of compact structure, convenient operation, excellent performance and the like. The sealing mode of the butterfly valve can be divided into a forced extrusion type sealing butterfly valve and a compensation type sealing butterfly valve; the sealing of the forced extrusion type sealing butterfly valve, namely the valve, is realized by rotating the valve plate in the inner cavity of the butterfly valve and forcing the sealing pair, the opening and closing operation of the valve is very simple, the valve opening is only required to rotate in a direction to separate the valve plate in the inner cavity of the butterfly valve from the sealing pair and rotate to a full-opening position to finish the valve opening action, and the valve closing is only required to rotate in a direction to close the valve, so that the valve plate in the inner cavity of the butterfly valve rotates until contacting and forcing the sealing pair to a full-closing position to finish the valve closing action. Compared with a forced extrusion type sealing structure, the compensation type sealing structure is provided with a sealing compensation action, namely the expansion of a sealing ring, after the valve is closed, the expanded sealing ring can compensate the sealing specific pressure among sealing pairs of the valve to a certain extent, impurities, abrasion and the like possibly existing among the sealing pairs are avoided, sealing failure is avoided, a more reliable absolute sealing effect is achieved, friction-free movement among the sealing pairs in the opening and closing process of the valve can be achieved, but the opening and closing operation of the compensation type sealing butterfly valve is complex, namely the pressure in the sealing ring is firstly relieved when the valve is opened, the sealing ring is retracted to a gap among the sealing pairs, then the valve plate of the inner cavity of the rotary butterfly valve is opened to a fully-opened position, the valve opening action is completed, the valve plate of the rotary butterfly valve is firstly closed to a fully-closed position when the valve is closed, after the valve plate is in place, the sealing ring is filled with gas (liquid) of a certain pressure, the sealing ring is expanded to a certain sealing specific gap, the sealing pair is not clearance, the valve closing action is completed, and the sealing pair is provided with a certain sealing specific pressure, the gas (liquid) in the sealing ring is required to be realized, external special equipment is required, for sealing operation, for example, an air compressor, an air storage tank, a high-pressure cylinder is required to be directly broken, and the valve is required to be opened, and the sealing valve is directly broken, and the complex operation is required to be carried out, and the sealing valve is broken, and the sealing valve is directly after the failure is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the compensation type sealing butterfly valve with sequential linkage opening and closing and pressure relief functions, wherein after the valve plate is closed in place, the sealing ring is automatically pressurized and expanded for sealing, and before the valve plate is opened, the sealing ring is automatically depressurized for sealing, so that the sealing is reliable, the operation is convenient, the sealing ring has no friction, and the service life of the sealing butterfly valve is ensured.
The invention relates to a compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions, which comprises the following technical scheme: the valve comprises a valve body, wherein a valve shaft is arranged in the valve body, the valve shaft is connected with the valve plate through a pin, a sealing pressing sleeve is arranged on an inner side opening of the valve body, a sealing ring is arranged between the sealing pressing sleeve and the valve body, the valve plate is matched with the sealing ring, an annular pressurizing support is arranged in the sealing ring, a through hole is formed in the annular pressurizing support, a pressurizing inner channel is formed in a wall surface corresponding to the through hole of the valve body, the pressurizing inner channel is connected with a pressure pipe, a box body is arranged on one side of the valve body, a box cover is arranged on the other side of the box body, a worm wheel and a worm are arranged in the box body, one end of the valve shaft penetrates through the valve body and the box body to be connected with the worm wheel, the worm wheel is meshed with the worm, one end of the worm penetrates through the box body to be connected with a hand wheel, an ejector rod is arranged on the other end of the worm, a shaft sleeve and a belleville spring are arranged in one end of the box body, a cylinder body penetrates through the shaft sleeve and the belleville spring, a cylinder body is arranged on one side of the box body, a piston is fixed with the box body, a piston is arranged in the cylinder body, one side of the piston is arranged on one side of the piston, the piston rod penetrates through the box body and contacts with the worm, a cylinder is arranged on one side of the piston, the piston is arranged on the other side, and the piston is connected with the through hole, and is provided with the through hole.
The invention discloses a compensating seal butterfly valve with sequential linkage opening and closing pressure relief, when a valve plate is to be closed, a closing direction rotating hand wheel, a hand wheel drives a worm to rotate, the worm is meshed with a worm wheel to drive the worm wheel to rotate in the closing direction, a worm wheel drives a valve shaft connected with the worm wheel to synchronously rotate in the closing direction with the valve plate, when the worm wheel rotates to a preset closing direction limit position in the closing direction, the valve plate is synchronously closed in place, if the closing direction rotating hand wheel and the worm is continued, the worm can not drive the worm wheel to rotate in the closing direction any more because the worm wheel reaches the closing direction limit position, at the moment, the worm produces an axial movement trend towards the disc spring, the axial force F=2pi M/P (M-torque acted on the hand wheel, P-lead of the worm) of the disc spring is greater than the pre-tightening elastic force of the disc spring, the worm compresses the disc spring and produces displacement, the worm contacts with a piston rod, the piston rod acts on the piston rod and pushes a piston in the cylinder body to move, the piston presses liquid or air pressure in the cylinder, the liquid or the air pressure in the cylinder is conveyed into a seal ring made of rubber material through a through hole and the through hole, the rubber material is expanded after being pressed, and expands towards an inner cavity until the seal ring in the valve plate is tightly contacted with the valve plate, and the valve plate is tightly pressed against the valve plate, thereby sealing the valve plate is sealed and sealed; when the hand wheel is operated in the opening direction, the worm synchronously rotates in the opening direction, under the action of axial force exerted by the disc spring, the liquid pressure (or air pressure) in the cylinder, the spring and the like, the worm axially retreats, the piston synchronously resets along with the axial force exerted by the liquid pressure (or air pressure) in the cylinder, the liquid pressure (or air pressure) in the cylinder and the inner cavity of the sealing ring synchronously reduces and relieves pressure, the sealing ring synchronously retracts, the sealing ring elastically returns to an initial state along with the axial resetting of the worm, and the sealing ring completely breaks away from contact with the valve plate and forms a gap with the valve plate again, at the moment, the hand wheel continuously rotates in the opening direction, the hand wheel drives the worm wheel to rotate in the opening direction, the valve plate connected with the worm wheel is driven to synchronously rotate in the opening direction, and the valve plate synchronously fully opens in place when the opening direction of the worm wheel rotates to a preset opening direction limiting position, and the valve opening process is completed. The scheme has the advantages that the compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions is provided with: 1. the valve plate opening and closing process and the filling and releasing in the sealing ring are automatically realized directly through the rotation operation of the hand wheel, external special filling equipment or tools are not needed, no additional operation is needed, the process is coherent, no difference exists between the valve plate opening and closing process and the traditional butterfly valve operation method, the valve opening and closing process can be realized, the valve opening and closing process is performed, no logic sequence error in operation can occur, the filling and releasing structure is integrally connected with the opening and closing structure of the worm and worm wheel driven valve plate, and the structure is compact and reliable in action; 2. the non-contact rotation between the sealing pairs is realized in the opening and closing rotation process of the valve plate, so that the sliding friction abrasion and tearing of the sealing pairs are avoided, the service life is prolonged, and the operation is labor-saving and easy; 3. the sealing ring made of the high-strength elastic hollow rubber material has extremely strong elastic restoring capability, uniform elastic deformation and reliable shrinkage restoring; 4. the sealing ring made of rubber material is elastically deformed and stretched by pressurizing, so that contact sealing with the valve plate is achieved, reliable sealing capability can be ensured, sealing abrasion compensation can be realized within a certain range, and the service life of the valve is prolonged.
The invention discloses a compensation type sealing butterfly valve with sequential linkage opening and closing pressure relief, wherein an opening limit bolt and a closing limit bolt are arranged in a box body, and the opening limit bolt and the closing limit bolt are respectively matched with a worm wheel. When the worm wheel rotates in place in the opening direction, one side of the worm wheel is contacted with the opening direction limiting bolt, the opening direction limiting bolt limits the worm wheel, so that the worm wheel cannot continue to rotate in the opening direction, and when the worm wheel rotates in place in the closing direction, the other side of the worm wheel is contacted with the closing direction limiting bolt, and the closing direction limiting bolt limits the worm wheel. One side of the worm wheel penetrates through the box cover to be connected with the indication cover, and an arrow mark is arranged on the indication cover. The cover can be printed or carved with an open and close character, and when the worm wheel drives the indication cover and the arrow mark to rotate to correspond to the character, the valve plate is proved to be opened or closed in place. Bearings are arranged on two ends of the worm, one end of the bearing is contacted with the inner wall of one side end cover of the box body, and the other end of the bearing is contacted with the shaft sleeve. The piston is provided with a sealing groove, and a sealing ring is arranged in the sealing groove. The sealing ring is arranged, so that the tightness between the piston and the cylinder body is improved.
Drawings
FIG. 1 is a schematic diagram of a valve plate opening state structure of a compensation type seal butterfly valve with sequential linkage opening and closing and pressure relief functions;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is a schematic diagram of a valve plate closed state structure of a compensation type seal butterfly valve with sequential linkage opening and closing and pressure relief functions according to the present invention;
FIG. 4 is an enlarged schematic view of a portion at B of FIG. 3;
FIG. 5 is a schematic view of the cross-section in the direction C-C of FIG. 3;
FIG. 6 is a schematic diagram of a seal ring pressurized state structure of a compensation type seal butterfly valve with sequential linkage on-off charging and pressure relief;
fig. 7 is an enlarged schematic view of a portion at D of fig. 6.
Detailed Description
The invention relates to a compensation type sealing butterfly valve with sequential linkage opening and closing charging and discharging functions, which is shown in figures 1-7, and comprises a valve body 1, wherein a valve shaft 2 is arranged in the valve body, the valve shaft is connected with a valve plate 4 through a pin 3, a sealing pressing sleeve 5 is arranged on the inner side opening of the valve body 1, a sealing ring 6 is arranged between the sealing pressing sleeve and the valve body 1, the valve plate is matched with the sealing ring, an annular pressurizing support 7 is arranged in the sealing ring, a perforation 8 is arranged in the annular pressurizing support, a pressurizing inner channel 9 is arranged on the wall surface of the valve body 1 corresponding to the perforation, the pressurizing inner channel is connected with a pressure pipe 10, a box body 11 is arranged on one side of the valve body 1, a box cover 12 is arranged on the other side of the box body, a worm wheel 13 and a worm 14 are arranged in the box body, one end of the valve shaft 2 penetrates through the valve body 1 and the box body 11 to be connected with the worm wheel, the worm wheel is meshed with the worm, one end of the worm penetrates through the box 11 to be connected with the hand wheel 15, the other end of the worm 14 is provided with a push rod 30, the box 11 is provided with a shaft sleeve 20 and a disc spring 21 in one end of the push rod, the push rod penetrates through the shaft sleeve and the disc spring, one side of the box is provided with a cylinder 22, the cylinder is fixed with the box, a piston 23 is arranged in the cylinder, one side of the piston is provided with a piston rod 24, the piston rod penetrates through the box 11 to be contacted with the worm 14, one side of the cylinder is provided with an air inlet hole 25, the other side of the piston is provided with a spring 26, one side of the cylinder is provided with oil or gas, one side of the cylinder is provided with a through hole 27, and the through hole is communicated with the other end of the pressure pipe 10. When the valve plate 4 is to be closed, the hand wheel 15 is turned off, the hand wheel drives the worm 14 to rotate, the worm is meshed with the worm wheel 13, the worm wheel is driven to turn off and rotate, the valve shaft 2 connected with the worm wheel is driven to turn off and rotate synchronously with the valve plate 4, when the worm wheel turns off and rotates to a preset turn-off limit position, the valve plate 4 is also closed synchronously, if the hand wheel 15 and the worm 14 are turned off and rotated continuously, the worm 14 can not drive the worm wheel to turn off and rotate again because the worm wheel 13 reaches the turn-off limit position, at the moment, the worm 14 generates an axial movement trend towards the disc spring 21, the axial force F=2pi M/P (M-torque acted on the hand wheel, lead of the P-worm) of the disc spring 21 is greater than the pre-tightening elastic force of the disc spring, the worm 14 compresses the disc spring 21 and generates displacement, the worm is contacted with the piston rod 24, the piston rod is acted on and pushes the piston 23 in the cylinder 22 to move, the piston presses liquid or air pressure in the cylinder, the liquid or the air pressure is conveyed into the sealing ring 6 made of rubber material through the through holes 27 and 10, the sealing ring made of the rubber material is expanded after being pressed, the sealing ring 4 in the inner cavity 1 is pressed, the sealing ring 4 is tightly contacted with the valve plate 4, the valve plate is tightly sealed with the valve plate, and the sealing ring is tightly sealed and sealed with the valve plate is tightly formed; when the hand wheel 15 is operated in the opening direction, the worm 14 synchronously rotates in the opening direction, under the action of axial forces exerted by the belleville spring 21, the liquid pressure (or air pressure) in the cylinder, the spring 26 and the like, the worm 14 axially retreats, the piston 23 synchronously returns along with the axial force exerted by the liquid pressure (or air pressure) in the cylinder 22 and the inner cavity of the sealing ring 6, the sealing ring synchronously retracts, the sealing ring 6 elastically returns to the initial state along with the axial return of the worm 14, and after the contact with the valve plate 4 is completely released, a gap is formed between the sealing ring 6 and the valve plate, at the moment, the hand wheel drives the worm wheel 13 to rotate in the opening direction, the valve plate 4 connected with the worm wheel is driven to synchronously rotate in the opening direction, and when the worm wheel 13 rotates in the opening direction to a preset opening direction limit position, the valve plate is synchronously fully opened in place, and the valve opening process is completed. The scheme has the advantages that the compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions is provided with: 1. the switching process of the valve plate 4 and the pressure charging and discharging in the sealing ring 6 are automatically realized directly through the rotation operation of the hand wheel 15, external special pressure charging equipment or tools are not needed, no additional operation is needed, the process is coherent, no difference exists between the valve plate and the traditional butterfly valve operation method, the valve is opened after the pressure is released, the valve is closed after the pressure is charged, no logic sequence error in operation can occur, and the pressure charging and discharging structure is integrally connected with the opening and closing structure of the worm and worm wheel driven valve plate, so that the structure is compact, and the action is reliable; 2. the non-contact rotation between the sealing pairs is realized in the opening and closing rotation process of the valve plate 4, so that the sliding friction abrasion and tearing of the sealing pairs are avoided, the service life is prolonged, and the operation is labor-saving and easy; 3. the sealing ring 6 made of high-strength elastic hollow rubber material has extremely strong elastic restoring capability, uniform elastic deformation and reliable shrinkage restoration; 4. the sealing ring 6 made of rubber material is elastically deformed and stretched by pressurizing, so that contact sealing with the valve plate 4 is achieved, reliable sealing capability can be ensured, sealing abrasion compensation can be realized within a certain range, and the service life of the valve is prolonged. The box 11 is provided with an opening limit bolt 16 and a closing limit bolt 17 which are respectively matched with the worm wheel 13. When the worm wheel 13 rotates in place in the opening direction, one side of the worm wheel is contacted with the opening direction limiting bolt 16, the opening direction limiting bolt limits the worm wheel so that the worm wheel cannot continue to rotate in the opening direction, and when the worm wheel 13 rotates in place in the closing direction, the other side of the worm wheel is contacted with the closing direction limiting bolt 17, and the closing direction limiting bolt limits the worm wheel. One side of the worm wheel 13 penetrates through the box cover 12 to be connected with an indication cover 18, and an arrow mark 19 is arranged on the indication cover. The cover 12 may be printed or engraved with an open and closed letter, which when rotated by the worm gear 13 to correspond to the letter, indicates that the valve plate 4 is open or closed. Bearings 28 are arranged on two ends of the worm 14, one end of the bearings is contacted with the inner wall of one side end cover of the box body 11, and the other end of the bearings 28 is contacted with the shaft sleeve 20. The piston 23 is provided with a sealing groove 29, and a sealing ring 31 is arranged in the sealing groove. The sealing ring 31 improves the sealing property between the piston 23 and the cylinder 22.
Claims (5)
1. The utility model provides a compensation formula seal butterfly valve with fill release pressure is opened and close to order linkage, including valve body (1), set up valve shaft (2) in the valve body, the valve shaft passes through pin (3) and connects valve plate (4), set up on the inboard mouth of valve body (1) and seal pressure cover (5), set up sealing washer (6) between sealing pressure cover and valve body (1), the valve plate cooperatees with the sealing washer, set up annular pressure support (7) in the sealing washer, make perforation (8) in the annular pressure support, it has pressure inner channel (9) to make on the wall that valve body (1) are located the perforation correspondence, pressure inner channel connection pressure pipe (10) to fill, set up box (11) in one side of valve body (1), the opposite side of box sets up case lid (12), set up worm wheel (13) and worm (14) in the box, one end of valve shaft (2) is connected with the worm wheel through valve body (1) and box (11), the worm wheel meshes with the worm, one end of worm is passed box (11) and is connected with hand wheel (15), its characterized in that: the other end of the worm (14) is provided with a push rod (30), a shaft sleeve (20) and a belleville spring (21) are arranged in one end of the push rod, the push rod penetrates through the shaft sleeve and the belleville spring, a cylinder body (22) is arranged on one side of the box, the cylinder body is fixed with the box, a piston (23) is arranged in the cylinder body, a piston rod (24) is arranged on one side of the piston, the piston rod penetrates through the box (11) to be in contact with the worm (14), an air inlet hole (25) is formed in one side of the cylinder body, a spring (26) is arranged in the cylinder body on the other side of the piston, oil or gas is arranged in one side of the spring, a through hole (27) is formed in one side of the spring, and the through hole is communicated with the other end of the pressure pipe (10).
2. The compensated seal butterfly valve with sequential linkage on-off charging and discharging pressure as recited in claim 1, wherein: the box body (11) is internally provided with an opening limit bolt (16) and a closing limit bolt (17), and the opening limit bolt and the closing limit bolt are respectively matched with the worm wheel (13).
3. The compensated seal butterfly valve with sequential linkage on-off charging and discharging pressure as recited in claim 1, wherein: one side of the worm wheel (13) penetrates through the box cover (12) to be connected with an indication cover (18), and an arrow mark (19) is arranged on the indication cover.
4. The compensated seal butterfly valve with sequential linkage on-off charging and discharging pressure as recited in claim 1, wherein: bearings (28) are arranged on two ends of the worm (14), one end of the bearing is contacted with the inner wall of one side end cover of the box body (11), and the other end of the bearing is contacted with the shaft sleeve (20).
5. The compensated seal butterfly valve with sequential linkage on-off charging and discharging pressure as recited in claim 1, wherein: a sealing groove (29) is formed in the piston (23), and a sealing ring (31) is arranged in the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911142753.5A CN110906013B (en) | 2019-11-20 | 2019-11-20 | Compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911142753.5A CN110906013B (en) | 2019-11-20 | 2019-11-20 | Compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110906013A CN110906013A (en) | 2020-03-24 |
| CN110906013B true CN110906013B (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911142753.5A Active CN110906013B (en) | 2019-11-20 | 2019-11-20 | Compensation type sealing butterfly valve with sequential linkage opening and closing functions and pressure relief functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110906013B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6805332B2 (en) * | 2002-03-29 | 2004-10-19 | Michael F. Crawley | Inflatable seat valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3464669A (en) * | 1964-12-04 | 1969-09-02 | Marie Charles Emile Henrion | Control system for butterfly valves |
| GB1263391A (en) * | 1969-01-07 | 1972-02-09 | Coplastix Ltd | Improvements in or relating to fluid-flow control valves |
| GB1411544A (en) * | 1971-10-30 | 1975-10-29 | Dunlop Ltd | Retracting inflatable seals |
| US4137935A (en) * | 1976-02-11 | 1979-02-06 | Macawber Engineering Limited | Valve assembly |
| CN2229014Y (en) * | 1995-08-11 | 1996-06-12 | 周宾 | Straight butterfly valve |
| US6213450B1 (en) * | 1998-09-12 | 2001-04-10 | Hygienic Pigging Systems Limited | Valves |
| CN2365464Y (en) * | 1998-10-14 | 2000-02-23 | 郑州市蝶阀厂 | Telescopic butterfly valve |
| CN1643279A (en) * | 2002-03-19 | 2005-07-20 | 费希尔控制国际公司 | Fluid flow control valve with bi-directional shutoff |
| CN108626412A (en) * | 2018-07-13 | 2018-10-09 | 章锡明 | From boost charge-air sealed butterfly valve |
| CN110410563A (en) * | 2019-08-26 | 2019-11-05 | 上海冠龙阀门机械有限公司 | A kind of intellectual worm gear Hand-operated butterfly valve |
| CN211344055U (en) * | 2019-11-20 | 2020-08-25 | 台州市工宇阀门有限公司 | Compensation type sealing butterfly valve with sequential linkage opening and closing charging and pressure relief functions |
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| CN110906013A (en) | 2020-03-24 |
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Effective date of registration: 20230419 Address after: No.390 Jiangtantou, Dujia Village, Beicheng Street, Huangyan District, Taizhou City, Zhejiang Province, 318020 Applicant after: Taizhou Gongyu Valve Co.,Ltd. Address before: Room 602, Unit 2, Building 58, Xijiang New Village, Xicheng Street, Huangyan District, Taizhou City, Zhejiang Province, 318020 Applicant before: Zhang Ximing |
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