CN113251164A - Double-section sealing gate valve - Google Patents
Double-section sealing gate valve Download PDFInfo
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- CN113251164A CN113251164A CN202110620453.4A CN202110620453A CN113251164A CN 113251164 A CN113251164 A CN 113251164A CN 202110620453 A CN202110620453 A CN 202110620453A CN 113251164 A CN113251164 A CN 113251164A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—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 two or more gates
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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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
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
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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
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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
- F16K31/60—Handles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to the technical field of gate valves and discloses a double-section sealing gate valve, in order to improve the safety and the usability of the double-section sealing gate valve, a pressure relief opening is formed in the position, located at the upper half end, of the inner side of a valve body, a double-section opening and closing mechanism is embedded into the position, located in the middle, of the outer side of the valve body, and a secondary lock mechanism is arranged at the top end of a transmission shell in the double-section opening and closing mechanism. According to the invention, the transmission screw rod in the double-section opening and closing mechanism drives the left valve core and the right valve core to symmetrically close and move, so that the traditional mode of inserting and sealing the valve core and the valve seat is replaced, the good sealing performance is realized, the phenomenon that slag in a medium falls into the valve seat to influence the sealing performance of the valve core can be avoided, the auxiliary lock is flexibly assembled and disassembled through the auxiliary lock mechanism, the gate valve can be subjected to appointed opening and closing treatment when in use, and the gate valve can be flexibly disassembled and independently stored when not in use, so that the gate valve is prevented from being opened and closed accidentally by external personnel or workers, and the safety and the usability of the gate valve are ensured.
Description
Technical Field
The invention relates to the technical field of gate valves, in particular to a double-section sealing gate valve.
Background
The opening and closing piece of gate valve is the flashboard, the direction of motion of flashboard is mutually perpendicular with the fluid direction, the gate valve only can be done and open fully and close entirely, can not do regulation and throttle, when the gate valve is closed, sealed face can only rely on medium pressure to seal, only rely on medium flange wedge gate valve pressure to press the sealed face of flashboard to the disk seat of opposite side to guarantee sealed face sealed promptly, this is exactly self sealedly, most gate valves adopt forced seal, when the valve is closed promptly, will rely on external force to press the flashboard to the disk seat by force, with the leakproofness of guaranteeing sealed face, the gate valve generally adopts manual opening and close, manual gate valve theory of operation: the hand wheel is rotated, the valve plate connected with the valve rod is lifted or lowered by advancing and retreating the threads of the hand wheel and the valve rod, so that the opening and closing effects are achieved, the manual gate valves are various in types, and the double-section sealing gate valve is widely used for various liquids and mixed liquids.
However, the double-section sealing gate valve in the current market has some defects, when the traditional double-section sealing gate valve is used, slag in liquid (particularly mixed liquid) easily falls into a valve seat, so that the valve core and the valve seat are not completely sealed, the leakage occurs, and the valve body structure is damaged. Accordingly, one skilled in the art has provided a two-stage sealing gate valve to solve the problems set forth in the background art described above.
Disclosure of Invention
The present invention is directed to a dual-section sealing gate valve to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a two sections sealing gate valve, includes the valve body, the inboard of valve body is located first end position department and is provided with the pressure release mouth, and the outside of valve body is located middle part department embedding and is provided with two sections operating mechanism, the top of transmission casing is provided with the locking mechanism of paying in the two sections operating mechanism.
As a still further scheme of the invention: the double-section opening and closing mechanism comprises an opening and closing shell arranged at the middle position outside the valve body, one side of the opening and closing shell is provided with a transmission shell, and the inner side of the opening and closing shell is symmetrically connected with a transmission screw rod at the front end and the rear end, the outer side of the transmission screw rod is sleeved with a left transmission piece at one end, and the outer side of the transmission screw rod is sleeved with a right transmission piece at the other end position, the rear side of the left transmission piece is provided with a left valve core, the rear side of the right side transmission part is provided with a right side valve core, the left side valve core and the right side valve core are symmetrically arranged at the position of the discharge end of the pressure relief opening, a transmission main shaft is embedded and connected at the middle position of the inner side of the transmission shell, a transmission gear is arranged at the tail end of the transmission main shaft, the transmission gear is connected with the transmission screw rod through the synchronous gear, and a hexagonal slot is embedded in the port of the transmission main shaft.
As a still further scheme of the invention: the teeth of the transmission gear are meshed with the teeth of the synchronous gear, and the transmission main shaft and the transmission screw rod synchronously rotate through the transmission gear and the synchronous gear.
As a still further scheme of the invention: the transmission screw rod takes a center line as a boundary, positive and negative screw teeth which are symmetrically arranged are respectively arranged on two sides of the center line, and the transmission screw rod is symmetrically sleeved with the left transmission part and the right transmission part through the positive and negative screw teeth.
As a still further scheme of the invention: the bottom symmetry of left side case is provided with the left side connecting seat, and the upper surface embedding of left side case is provided with the left side valve clack, the seal end of left side valve clack is provided with the encapsulation flange, the bottom symmetry of right side case is provided with the right side connecting seat, and the upper surface embedding of right side case is provided with the right side valve clack, the encapsulation draw-in groove has been seted up in the seal end embedding of right side valve clack, the left side valve clack all laminates with the pressure release mouth with the right side valve clack.
As a still further scheme of the invention: the left side valve clack constitutes the disc structure with the right side valve clack, and the size of disc is the same with the size of pressure release mouth, left side valve clack and right side valve clack all adopt brass material component, and left side valve clack and right side valve clack pass through the sealed block of encapsulation flange and encapsulation draw-in groove.
As a still further scheme of the invention: the secondary lock mechanism comprises a lock cylinder frame arranged at the top end of the transmission shell, a lock cylinder hole is formed in the inner side of the lock cylinder frame in a penetrating mode, the lock cylinder frame is clamped with a key supporting rod through the lock cylinder hole, guide slots are symmetrically formed in the upper end and the lower end of the lock cylinder hole, a first annular locking ring, a second annular locking ring and a third annular locking ring are sequentially arranged on the inner side of each guide slot from left to right, a rotating hand wheel is arranged at the top end of the key supporting rod, a hexagonal inserting rod is arranged at the tail end of the key supporting rod, and a first key tooth, a second key tooth and a third key tooth are sequentially arranged on the outer side of the key supporting rod from left to right.
As a still further scheme of the invention: the telescopic length of the key supporting rod is the same as the length of the groove diameter of the lock cylinder hole.
As a still further scheme of the invention: the outer diameters of the first key tooth, the second key tooth and the third key tooth are respectively matched with the inner diameters of the first annular locking ring, the second annular locking ring and the third annular locking ring, and the first key tooth, the second key tooth and the third key tooth are respectively in one-to-one correspondence with the first annular locking ring, the second annular locking ring and the third annular locking ring.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the symmetrical closing motion of the left valve core and the right valve core is driven by the transmission screw rod in the double-section opening and closing mechanism, the traditional mode of inserting and sealing the valve core and the valve seat is replaced, the good sealing performance is realized, the phenomenon that slag in a medium falls into the valve seat to influence the sealing performance of the valve core can be avoided, the excessive damage to the structure of the valve body due to abrasion can be avoided, and in the using process of the gate valve, the auxiliary lock is flexibly assembled and disassembled through the auxiliary lock mechanism, the gate valve can be subjected to appointed opening and closing treatment in use, and can be flexibly disassembled and stored independently when not in use, the accidental opening and closing of the gate valve by external personnel or working personnel is avoided, and the safety and usability of the gate valve are ensured.
Drawings
FIG. 1 is a schematic structural view of a two-stage sealing gate valve;
FIG. 2 is a schematic structural diagram of a two-stage opening and closing mechanism in a two-stage sealing gate valve;
FIG. 3 is a schematic structural diagram of a valve core in a double-section sealing gate valve;
FIG. 4 is a schematic view of a secondary lock mechanism in a two-stage sealing gate valve;
fig. 5 is a schematic structural view of a cylinder holder in a double-segment sealing gate valve.
In the figure: 1. a valve body; 2. opening and closing the shell; 3. a transmission housing; 4. a lock cylinder frame; 5. rotating a hand wheel; 6. a key post; 7. a first key tooth; 8. a second key tooth; 9. a third key tooth; 10. a hexagonal inserted link; 11. a lock cylinder hole; 12. a guide slot; 13. a first annular locking ring; 14. a second annular locking ring; 15. a third annular locking ring; 16. a transmission gear; 17. a transmission main shaft; 18. a hexagonal socket; 19. a synchronizing gear; 20. a transmission screw rod; 21. a left side transmission member; 22. a right side transmission member; 23. a left side valve core; 24. a pressure relief port; 25. a right valve core; 26. a left valve flap; 27. packaging the convex wing; 28. a left side connecting seat; 29. a right side connecting seat; 30. packaging the card slot; 31. and a right valve clack.
Detailed Description
Referring to fig. 1 to 5, in the embodiment of the present invention, a two-section sealing gate valve includes a valve body 1, a pressure relief port 24 is disposed at an upper half position of an inner side of the valve body 1, a two-section opening and closing mechanism is embedded at a middle position of an outer side of the valve body 1, the two-section opening and closing mechanism includes an opening and closing housing 2 disposed at a middle position of the outer side of the valve body 1, a transmission housing 3 is disposed at one side of the opening and closing housing 2, transmission screws 20 are symmetrically connected at front and rear end positions of the inner side of the opening and closing housing 2, a left transmission member 21 is sleeved at one end position of the outer side of the transmission screw 20, a right transmission member 22 is sleeved at the other end position of the outer side of the transmission screw 20, a left valve core 23 is disposed at a rear side of the left transmission member 21, a right valve core 25 is disposed at a rear side of the right transmission member 22, the left valve core 23 and the right valve core 25 are symmetrically disposed at a discharge end position of the pressure relief port 24, the bottom end of the left valve core 23 is symmetrically provided with a left connecting seat 28, the upper surface of the left valve core 23 is embedded with a left valve clack 26, the sealing end of the left valve clack 26 is provided with an encapsulation convex wing 27, the bottom end of the right valve core 25 is symmetrically provided with a right connecting seat 29, the upper surface of the right valve core 25 is embedded with a right valve clack 31, the sealing end of the right valve clack 31 is embedded with an encapsulation clamping groove 30, the left valve clack 26 and the right valve clack 31 are both attached to a pressure relief opening 24, the left valve clack 26 and the right valve clack 31 form a disc structure, the size of the disc is the same as that of the pressure relief opening 24, the left valve clack 26 and the right valve clack 31 are both made of brass material, the left valve clack 26 and the right valve clack 31 are hermetically clamped through the encapsulation convex wing 27 and the encapsulation clamping groove 30, in the process of opening or sealing the pressure relief opening 24, when the pressure relief opening 24 is opened, a medium flows through the pressure relief opening 24, circulation valve body 1 that slag charge in the medium can be comprehensive, the sealing performance that influences the case in the slag charge that has avoided in the medium falls into the disk seat, traditional case and disk seat grafting sealed form has been replaced, when having good leakproofness, can avoid wearing and tearing excessively to damage the structure of valve body again, when closing pressure release port 24 is sealed, left side case 23 slides with the closed of right side case 25 symmetry, it slides to drive left side valve clack 26 and the synchronous closure of right side valve clack 31, the butt through encapsulation flange 27 and encapsulation draw-in groove 30 is sealed, make left side valve clack 26 and right side valve clack 31 constitute sealed disc, seal the processing to pressure release port 24.
A transmission main shaft 17 is embedded and connected at the middle position of the inner side of the transmission shell 3, a transmission gear 16 is arranged at the tail end of the transmission main shaft 17, the transmission gear 16 is connected with a transmission screw rod 20 through a synchronous gear 19, a hexagonal slot 18 is embedded and arranged at the port position of the transmission main shaft 17, teeth of the transmission gear 16 are meshed with teeth of the synchronous gear 19, the transmission main shaft 17 and the transmission screw rod 20 synchronously rotate through the transmission gear 16 and the synchronous gear 19, the transmission screw rod 20 takes a center line as a boundary, positive and negative screw teeth which are symmetrically arranged are respectively arranged at two sides of the center line, the transmission screw rod 20 is symmetrically sleeved with a left transmission piece 21 and a right transmission piece 22 through the positive and negative screw teeth, when the double-section sealing gate valve is opened and closed, the rotating hand wheel 5 is rotated to drive the key supporting rod 6 to rotate, and the transmission main shaft 17 is driven to rotate through the assembly combination of the hexagonal slot 18 and the hexagonal inserted rod 10, the transmission gear 16 is synchronously driven to rotate, the transmission screw rod 20 is driven to rotate through the meshing of the transmission gear 16 and the teeth of the synchronous gear 19, and further the left transmission piece 21 and the right transmission piece 22 are driven to symmetrically slide through the positive and negative threads which are symmetrically arranged on the transmission screw rod 20, so that the left valve core 23 and the right valve core 25 are symmetrically opened and closed to slide, and the pressure relief opening 24 is opened or sealed.
The double-section opening and closing mechanism is characterized in that a secondary locking mechanism is arranged at the top end of a transmission shell 3, the secondary locking mechanism comprises a lock cylinder frame 4 arranged at the top end of the transmission shell 3, a lock cylinder hole 11 is formed in the inner side of the lock cylinder frame 4 in a penetrating mode, the lock cylinder frame 4 is clamped with a key support rod 6 through the lock cylinder hole 11, guide slots 12 are symmetrically formed in the upper end and the lower end of the lock cylinder hole 11, a first annular locking ring 13, a second annular locking ring 14 and a third annular locking ring 15 are sequentially arranged on the inner side of each guide slot 12 from left to right, a rotary hand wheel 5 is arranged at the top end of the key support rod 6, a hexagonal inserting rod 10 is arranged at the tail end of the key support rod 6, a first key tooth 7, a second key tooth 8 and a third key tooth 9 are sequentially arranged on the outer side of the key support rod 6 from left to right, the telescopic length of the key support rod 6 is the same as the groove diameter length of the lock cylinder hole 11, and the outer diameters of the first key tooth 7, the second key tooth 8 and the third key tooth 9 are respectively equal to the first annular locking ring 13, The inner diameters of the second annular lock ring 14 and the third annular lock ring 15 are matched, the first key tooth 7, the second key tooth 8 and the third key tooth 9 are respectively corresponding to the first annular lock ring 13, the second annular lock ring 14 and the third annular lock ring 15 one by one, when the double-section sealing gate valve is opened and closed, a worker inserts the key support rod 6 into the lock cylinder hole 11, synchronously enables the first key tooth 7, the second key tooth 8 and the third key tooth 9 on the outer side of the key support rod 6 to be abutted into the guide slot 12, further pushes the key support rod 6, completely inserts the key support rod 6 into the lock cylinder hole 11, enables the hexagonal insert rod 10 to be abutted into the hexagonal slot 18 at the top end of the transmission main shaft 17, and after the abutment is completed, the first key tooth 7, the second key tooth 8 and the third key tooth 9 are in one-to-one correspondence with the first annular lock ring 13, the second annular lock ring 14 and the third annular lock ring 15, the three groups of key teeth can rotate and slide in the three groups of annular lock rings, and then a worker can drive the key supporting rod 6 to rotate by rotating the rotating hand wheel 5 to open and close the gate valve.
The working principle of the invention is as follows: when the double-section sealing gate valve is opened and closed, a worker inserts the key support rod 6 into the lock cylinder hole 11, synchronously pushes the first key tooth 7, the second key tooth 8 and the third key tooth 9 outside the key support rod 6 into the guide slot 12, further pushes the key support rod 6, completely inserts the key support rod 6 into the lock cylinder hole 11, pushes the hexagonal inserted rod 10 into the hexagonal slot 18 at the top end of the transmission main shaft 17, and after pushing is completed, the three groups of key teeth can slide in the three groups of annular locking rings in a rotating manner through the one-to-one correspondence of the first key tooth 7, the second key tooth 8 and the third key tooth 9 with the first annular locking ring 13, the second annular locking ring 14 and the third annular locking ring 15, further, the worker can drive the key support rod 6 to rotate by rotating the rotating hand wheel 5 to open and close the gate valve, and further when the double-section sealing gate valve is opened and closed, the rotating hand wheel 5 is rotated to drive the key supporting rod 6 to rotate, the transmission main shaft 17 is driven to rotate through the assembly combination of the hexagonal slot 18 and the hexagonal inserted rod 10, the transmission gear 16 is synchronously driven to rotate, the transmission screw rod 20 is driven to rotate through the meshing of the transmission gear 16 and the teeth of the synchronous gear 19, and further the transmission screw rod 20 is driven to symmetrically slide through the positive and negative teeth which are symmetrically arranged with each other, so that the left transmission piece 21 and the right transmission piece 22 are driven to symmetrically slide, the left valve core 23 and the right valve core 25 are symmetrically opened and closed to slide, the pressure relief opening 24 is opened or sealed, when the pressure relief opening 24 is opened, a medium flows through the pressure relief opening 24, slag in the medium can comprehensively flow through the valve body 1, the phenomenon that the slag in the medium falls into the valve seat to influence the sealing performance of the valve core is avoided, the traditional inserting and sealing mode of the valve core and the valve seat is replaced, the sealing performance is good, and the structure of the valve body can be prevented from being excessively damaged by abrasion, when the pressure relief opening 24 is sealed and closed, the left valve core 23 and the right valve core 25 symmetrically slide in a closed manner to drive the left valve clack 26 and the right valve clack 31 to synchronously slide in a closed manner, and the left valve clack 26 and the right valve clack 31 form a sealing disc through the abutting sealing of the packaging convex wing 27 and the packaging clamping groove 30, so that the pressure relief opening 24 is sealed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (9)
1. The utility model provides a two sections sealing gate valve, includes valve body (1), its characterized in that, the inboard of valve body (1) is located first end position department and is provided with pressure release mouth (24), and the outside of valve body (1) is located middle part department embedding and is provided with two sections operating mechanism, the top of transmission casing (3) is provided with pair latch mechanism in the two sections operating mechanism.
2. The double-section sealing gate valve according to claim 1, characterized in that the double-section opening and closing mechanism comprises an opening and closing housing (2) arranged at the middle position outside the valve body (1), a transmission housing (3) is arranged at one side of the opening and closing housing (2), the inner side of the opening and closing housing (2) is symmetrically connected with transmission screws (20) at the front end position and the rear end position, a left transmission member (21) is sleeved at one end position of the outer side of the transmission screw (20), a right transmission member (22) is sleeved at the other end position of the outer side of the transmission screw (20), a left valve core (23) is arranged at the rear side of the left transmission member (21), a right valve core (25) is arranged at the rear side of the right transmission member (22), the left valve core (23) and the right valve core (25) are symmetrically arranged at the discharge end position of the pressure relief port (24), the inner side of the transmission shell (3) is embedded and connected with a transmission main shaft (17) at the middle position, a transmission gear (16) is arranged at the tail end of the transmission main shaft (17), the transmission gear (16) is connected with a transmission screw rod (20) through a synchronous gear (19), and a hexagonal slot (18) is formed in the port position of the transmission main shaft (17) in an embedded mode.
3. The double-section sealing gate valve according to claim 2, characterized in that the teeth of the transmission gear (16) and the teeth of the synchronizing gear (19) are meshed with each other, and the transmission main shaft (17) and the transmission screw rod (20) synchronously rotate through the transmission gear (16) and the synchronizing gear (19).
4. The double-section sealing gate valve according to claim 2, characterized in that the transmission screw rod (20) is bounded by a central line, and both sides of the central line are respectively provided with a positive thread and a negative thread which are symmetrically arranged with each other, and the transmission screw rod (20) is symmetrically sleeved with the left transmission member (21) and the right transmission member (22) through the positive thread and the negative thread.
5. The double-section sealing gate valve according to claim 2, characterized in that a left connecting seat (28) is symmetrically arranged at the bottom end of the left valve core (23), a left valve flap (26) is embedded in the upper surface of the left valve core (23), an encapsulation convex wing (27) is arranged at the sealed end of the left valve flap (26), a right connecting seat (29) is symmetrically arranged at the bottom end of the right valve core (25), a right valve flap (31) is embedded in the upper surface of the right valve core (25), an encapsulation clamping groove (30) is formed in the sealed end of the right valve flap (31), and the left valve flap (26) and the right valve flap (31) are both attached to the pressure relief opening (24).
6. The double-section sealing gate valve according to claim 5, wherein the left valve flap (26) and the right valve flap (31) form a disc structure, the size of the disc structure is the same as that of the pressure relief opening (24), the left valve flap (26) and the right valve flap (31) are both made of brass, and the left valve flap (26) and the right valve flap (31) are in sealing engagement through the sealing convex wing (27) and the sealing clamping groove (30).
7. The double-section sealing gate valve according to claim 1, wherein the secondary lock mechanism comprises a lock cylinder frame (4) arranged at the top end of the transmission housing (3), a lock cylinder hole (11) is formed through the inner side of the lock cylinder frame (4), the lock cylinder frame (4) is clamped with the key support rod (6) through the lock cylinder hole (11), guide slots (12) are symmetrically formed in the upper end and the lower end of the lock cylinder hole (11), a first annular locking ring (13), a second annular locking ring (14) and a third annular locking ring (15) are sequentially arranged on the inner side of each guide slot (12) from left to right, a rotating hand wheel (5) is arranged at the top end of the key support rod (6), a hexagonal insertion rod (10) is arranged at the tail end of the key support rod (6), and a first key tooth (7), a second key tooth (8) and a third annular locking ring (15) are sequentially arranged on the outer side of the key support rod (6) from left to right, A third key tooth (9).
8. A two-stage sealing gate valve according to claim 7, characterized in that the telescopic length of the key support rod (6) is the same as the groove diameter length of the cylinder bore (11).
9. The two-segment sealing gate valve according to claim 7, characterized in that the outer diameters of the first, second and third key teeth (7, 8, 9) are respectively matched with the inner diameters of the first, second and third annular lock rings (13, 14, 15), and the first, second and third key teeth (7, 8, 9) are respectively in one-to-one correspondence with the first, second and third annular lock rings (13, 14, 15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620453.4A CN113251164A (en) | 2021-06-03 | 2021-06-03 | Double-section sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110620453.4A CN113251164A (en) | 2021-06-03 | 2021-06-03 | Double-section sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113251164A true CN113251164A (en) | 2021-08-13 |
Family
ID=77186166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110620453.4A Pending CN113251164A (en) | 2021-06-03 | 2021-06-03 | Double-section sealing gate valve |
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| CN (1) | CN113251164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135697A (en) * | 2021-12-03 | 2022-03-04 | 浙江新博阀门有限公司 | Multi-cutter gate valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135697A (en) * | 2021-12-03 | 2022-03-04 | 浙江新博阀门有限公司 | Multi-cutter gate valve |
| CN114135697B (en) * | 2021-12-03 | 2024-03-26 | 浙江新博阀门有限公司 | Multi-pass knife gate valve |
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