阅读说明：本技术 一种耐高温安全阀 (High-temperature-resistant safety valve ) 是由 许洪强 于 2021-11-01 设计创作，主要内容包括：本发明属于耐高温安全阀领域,尤其涉及一种耐高温安全阀,包括阀体,所述阀体内部中心设有关阀除锈部件,所述阀体内部位于所述关阀除锈部件远离地面一侧设有自动换向部件,所述阀体内部位于所述关阀除锈部件一侧设有灭火降温部件,所述阀体内部位于所述关阀除锈部件远离所述自动换向部件一侧开有液体入口,所述阀体内部与所述液体入口连通处三个方向分别开有液体出口,能够自动灭火降温,检测锈蚀并除锈与关阀以及将输送液体导入安全方向。(The invention belongs to the field of high-temperature-resistant safety valves, and particularly relates to a high-temperature-resistant safety valve which comprises a valve body, wherein a valve rust removing part is arranged in the center of the inside of the valve body, an automatic reversing part is arranged on one side, away from the ground, of the valve rust removing part, a fire extinguishing and cooling part is arranged on one side, away from the automatic reversing part, of the valve rust removing part, the inside of the valve body is provided with a liquid inlet, and liquid outlets are respectively arranged in three directions at the communication positions of the inside of the valve body and the liquid inlet, so that the high-temperature-resistant safety valve can automatically extinguish fire and cool, detect corrosion, remove rust and close the valve and guide conveying liquid into a safety direction.)

1. The utility model provides a high temperature resistant relief valve, includes valve body (10), its characterized in that, relevant valve rust cleaning part (81) is established at the inside center of valve body (10), valve body (10) inside is located close valve rust cleaning part (81) and keep away from ground one side and be equipped with automatic reversing part (82), valve body (10) inside is located close valve rust cleaning part (81) one side and be equipped with cooling part (83) of putting out a fire, valve body (10) inside is located close valve rust cleaning part (81) and keep away from automatic reversing part (82) one side and open there is liquid inlet (17), valve body (10) inside with liquid inlet (17) intercommunication department three direction is opened respectively has liquid outlet (45).

2. The high-temperature-resistant safety valve is characterized in that the valve closing and rust removing component (81) is in contact with and is linked with an automatic reversing component (82), the fire extinguishing and temperature reducing component (83) leads to the outside of the valve body (10), and the automatic reversing component (82) takes liquid in the liquid inlet (17) as driving force.

3. The high-temperature-resistant safety valve according to claim 1, wherein the valve closing rust removing component (81) comprises a reversing column (16), the reversing column (16) is rotatably connected with the valve body (10), a nut (20) is fixedly arranged at the center of the inside of the reversing column (16), a screw (19) is connected with the inside of the nut (20) in a threaded manner, a valve closing sealing ring (18) is rotatably arranged at one end of the screw (19) close to the nut (20), the screw (19) is sleeved with a relevant valve detecting disc (41) in a sliding manner in the direction away from the nut (20), a relevant valve rotating disc (12) is rotatably sleeved outside the valve detecting disc (41), the valve closing rotating disc (12) is rotatably contacted with the reversing column (16), a relevant valve gear ring (13) is fixedly arranged at one side of the valve closing sealing ring (18) close to the valve rotating disc (12), a relevant valve motor (15) is fixedly arranged at one side of the screw (19) inside the reversing column (16), the output end of the valve closing motor (15) is fixedly provided with a related valve pinion (14), the valve closing pinion (14) is meshed with the valve closing toothed ring (13) and a rust remover cavity (23) is fixedly arranged in the reversing column (16) and is positioned on one side, far away from the valve closing motor (15), of the screw (19).

4. The high-temperature-resistant safety valve according to claim 3, wherein the valve-closing rotating disc (12) is connected with the valve-closing detecting disc (41) through a valve-closing rotating disc spring (40), a rust removal detecting sliding block (31) is arranged inside the valve-closing rotating disc (12) at the position of the valve-closing rotating disc spring (40) in a sliding manner, a rust removal detecting spring seat (29) is fixedly arranged inside the valve-closing rotating disc (12) at the position of the rust removal detecting sliding block (31) far away from the valve-closing rotating disc spring (40), the rust removal detecting sliding block (31) is connected with the rust removal detecting spring seat (29) through a rust removal detecting spring (30), a rust removal pressure ring (36) is arranged inside the valve-closing rotating disc (12) at the position of the rust removal detecting spring seat (29) in a sliding manner, and liquid is filled between the rust removal pressure ring (36) and the rust removal detecting spring seat (29), a derusting pressure push rod (34) is fixedly arranged on one side, far away from the derusting detection spring seat (29), of the derusting pressure ring (36), the derusting pressure ring (36) is connected with the valve closing rotary table (12) through a derusting pressure spring (35), the contact surface of the reversing column (16) and the valve closing rotary table (12) surrounds the screw rod (19) and is sleeved with a derusting ejector block (32), the derusting pressure push rod (34) is aligned with the derusting ejector block (32), a derusting ejector rod (33) is fixedly arranged on one side, far away from the derusting pressure push rod (34), of the derusting ejector rod (33), a derusting valve (39) is fixedly arranged on one end, far away from the derusting pressure push rod (34), of the derusting valve (39) is slidably connected with the reversing column (16), and the derusting valve (39) is connected with the reversing column (16) through a derusting valve spring (38), and a plurality of rust removing nozzles (37) are arranged on the inner side wall of the reversing column (16) facing the screw rod (19).

5. The high-temperature-resistant safety valve according to claim 1, wherein the automatic reversing component (82) comprises a reversing gear (53), the reversing gear (53) is fixedly arranged at the top of the reversing column (16), a reversing guide gear (28) is rotatably arranged at the top of the reversing gear (53), the reversing gear (53) is aligned with the gear teeth of the reversing guide gear (28), reversing pistons (42) are respectively and slidably arranged in the valve body (10) at two sides of the reversing guide gear (28), a reversing push rod (43) is fixedly arranged at one side of the reversing piston (42) close to the reversing guide gear (28), a reversing rack (44) is slidably arranged at one side of the reversing push rod (43) far away from the reversing piston (42), the reversing rack (44) is in meshing contact with the reversing guide gear (28), and a reversing expansion piston is slidably arranged at the top of the reversing rack (44) at the center in the valve body (10) The reversing expansion valve is characterized by comprising a plug (48), a reversing expansion push rod (49) is fixedly arranged on one side, close to the reversing rack (44), of the reversing expansion piston (48), the valve body (10) is internally located, the reversing expansion piston (48) is far away from one side, away from the reversing expansion push rod (49), of the reversing expansion push rod (49), a reversing expansion liquid cavity (47) is formed, the reversing rack (44) is far away from one side, away from the reversing expansion push rod (49), of the reversing expansion push rod (49), and a reversing rack ejector block (50) is arranged in a sliding mode, and the reversing rack ejector block (50) is connected with the valve body (10) through an ejector block spring (51).

6. The high-temperature-resistant safety valve according to claim 1, wherein the fire extinguishing and cooling part (83) comprises a water spraying valve block (24), the water spraying valve block (24) is slidably disposed on one side of the reversing column (16), the water spraying valve block (24) is connected with the valve body (10) through a water spraying spring (22), a water spraying push rod (25) is fixedly disposed on one side of the water spraying valve block (24) away from the water spraying spring (22), an expansion liquid cavity (27) is formed on one side of the water spraying push rod (25) away from the water spraying valve block (24), a water inlet (21) is formed inside the valve body (10) and faces the water spraying spring (22), a water outlet (26) is formed inside the valve body (10) and faces the water spraying push rod (25) and a plurality of fire extinguishing nozzles (11) are fixedly disposed on the outer circumferential side wall of the valve body (10), a plurality of the fire extinguishing spray heads (11) are communicated with the water outlet (26).

Technical Field

The invention belongs to the field of high-temperature-resistant safety valves, and particularly relates to a high-temperature-resistant safety valve.

Background

The safety valve is a special equipment for protecting the conveying pipeline, and is an automatic valve. When the pressure reaches the set pressure, it does not rely on any external force, but rather uses the force of the medium itself to perform some operation.

Under the condition of fire, the surface of the safety valve has high temperature and is not easy to fall down, and the safety valve has the condition of internal high pressure when in operation, thereby bringing potential safety hazards to pipelines.

Therefore, a high-temperature-resistant safety valve capable of automatically extinguishing fire, reducing temperature, detecting corrosion, removing rust, closing the valve and guiding conveying liquid into a safety direction is provided.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a high-temperature-resistant safety valve which can automatically extinguish fire, reduce temperature, detect corrosion, remove rust, close the valve and guide conveying liquid into a safety direction.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a high temperature resistant relief valve, includes the valve body, the inside center of valve body establishes relevant valve rust cleaning part, the valve body is inside to be located close valve rust cleaning part and keep away from ground one side and be equipped with the automatic reversing part, the valve body is inside to be located close valve rust cleaning part one side and be equipped with the cooling part of putting out a fire, the valve body is inside to be located close valve rust cleaning part and keep away from automatic reversing part one side is opened there is liquid inlet, the valve body inside with liquid inlet intercommunication department three direction is opened respectively has the liquid export.

Preferably, the valve closing and rust removing component is in contact with and linked with an automatic reversing component, the fire extinguishing and cooling component is communicated to the outside of the valve body, and the automatic reversing component takes liquid in the liquid inlet as driving force.

Preferably, the valve closing and rust removing component comprises a reversing column, the reversing column is rotatably connected with the valve body, a nut is fixedly arranged at the center of the interior of the reversing column, a screw rod is connected with the interior of the nut in a threaded manner, a valve closing sealing ring is rotatably arranged at one end of the screw rod close to the nut, the screw rod is sleeved with a relevant valve detection disc in a sliding way in the direction away from the nut, the outer side of the valve closing detection disc is sleeved with a relevant valve rotating disc in a rotating way, the valve closing turntable is in rotating contact with the reversing column, one side of the valve closing turntable, which is close to the valve closing sealing ring, is fixedly provided with a related valve gear ring, a related valve motor is fixedly arranged at one side of the screw rod in the reversing column, a related valve pinion is fixedly arranged at the output end of the valve closing motor, the valve closing pinion is meshed with the valve closing gear ring, and a rust remover cavity is fixedly arranged in the reversing column and is positioned on one side, far away from the valve closing motor, of the screw.

Preferably, the valve closing rotary disc is connected with the valve closing detection disc through a valve closing rotary disc spring, a rust removal detection slide block is arranged inside the valve closing rotary disc at the position of the valve closing rotary disc spring in a sliding mode, a rust removal detection spring seat is fixedly arranged inside the valve closing rotary disc at the position, far away from the valve closing rotary disc spring, of the rust removal detection slide block, the rust removal detection slide block is connected with the rust removal detection spring seat through a rust removal detection spring, a rust removal pressure ring is arranged inside the valve closing rotary disc at the position of the rust removal detection spring seat in a sliding mode, liquid is filled between the rust removal pressure ring and the rust removal detection spring seat, a rust removal pressure push rod is fixedly arranged on one side, far away from the rust removal detection spring seat, of the rust removal pressure ring, the rust removal pressure ring is connected with the valve closing rotary disc through the rust removal pressure spring, and a rust removal top block is sleeved on the contact surface of the reversing column and the valve closing rotary disc around the screw rod, the rust removing device comprises a rust removing pressure push rod, a rust removing ejector rod, a rust removing valve, a reversing column and a plurality of rust removing nozzles, wherein the rust removing pressure push rod is aligned with the rust removing ejector block, one side, far away from the rust removing pressure push rod, of the rust removing ejector rod is fixedly provided with the rust removing ejector rod, one end, far away from the rust removing pressure push rod, of the rust removing ejector rod is fixedly provided with the rust removing valve, the rust removing valve is connected with the reversing column in a sliding mode, the rust removing valve is connected with the reversing column through the rust removing valve spring, and the side wall of the inner portion of the reversing column faces the screw rod direction and is provided with the plurality of rust removing nozzles.

Preferably, the automatic reversing component comprises a reversing gear, the reversing gear is fixedly arranged at the top of the reversing column, a reversing guide gear is rotatably arranged at the top of the reversing gear, the reversing gear is aligned with the gear teeth of the reversing guide gear, reversing pistons are respectively and slidably arranged in the valve body and positioned at two sides of the reversing guide gear, a reversing push rod is fixedly arranged at one side of the reversing piston close to the reversing guide gear, a reversing rack is slidably arranged at one side of the reversing push rod far away from the reversing piston, the reversing rack is in meshing contact with the reversing guide gear, a reversing expansion piston is slidably arranged at the top of the reversing rack in the center of the interior of the valve body, a reversing expansion push rod is fixedly arranged at one side of the reversing expansion piston close to the reversing rack, a reversing expansion liquid cavity is formed in the valve body and positioned at one side of the reversing expansion piston far away from the reversing expansion push rod, and one side of the reversing rack, which is far away from the reversing expansion push rod, is slidably provided with a reversing rack ejector block, and the reversing rack ejector block is connected with the valve body through an ejector block spring.

Preferably, the cooling part of putting out a fire includes the water spray valve piece, the water spray valve piece slides and locates switching-over post one side, the water spray valve piece with connect through the water spray spring between the valve body, the water spray valve piece is kept away from water spray spring one side has set firmly water spray rod, water spray rod keeps away from water spray valve piece one side is opened there is the inflation liquid chamber, the valve body is inside to be located the water spray valve piece towards water spray spring direction is opened there is the water inlet, the valve body is inside to be located the water spray valve piece towards water spray rod direction is opened there is the delivery port, the outside circumference lateral wall of valve body has set firmly a plurality of shower nozzles of putting out a fire, and is a plurality of the shower nozzle of putting out a fire with the delivery port intercommunication.

Advantageous effects

The invention provides a high-temperature-resistant safety valve through improvement, and compared with the prior art, the high-temperature-resistant safety valve has the following improvements and advantages:

1. through setting up the automatic fire extinguishing part, can make the valve body put out a fire the cooling when the surrounding environment temperature rises, effectively guaranteed the safety of carrying liquid.

2. Through setting up the automatic reversing component, can be with the lower side of conveying liquid direction temperature, guarantee safety when normally guaranteeing liquid transport.

3. Through setting up the rust cleaning part of closing the valve, can close the valve under the uncontrollable condition of ambient temperature, detect and automatic rust cleaning closing the valve resistance, ensure to close the valve and accomplish.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 5 is a cross-sectional view taken at C-C of FIG. 3;

FIG. 6 is a cross-sectional view taken at D-D of FIG. 3;

FIG. 7 is a partial cross-sectional view taken at E-E of FIG. 3;

FIG. 8 is an enlarged view of a portion of FIG. 3 at F;

FIG. 9 is an enlarged view of a portion of FIG. 3 at G;

fig. 10 is a partial enlarged view of fig. 3 at H.

In the figure: 10. a valve body; 11. a fire extinguishing nozzle; 12. a valve-closing turntable; 13. a valve closing toothed ring; 14. a valve-closing pinion; 15. a valve closing motor; 16. a reversing post; 17. a liquid inlet; 18. closing the valve sealing ring; 19. a screw; 20. a nut; 21. a water inlet; 22. a water spray spring; 23. a rust remover cavity; 24. a water spray valve block; 25. a water spray push rod; 26. a water outlet; 27. an inflation fluid chamber; 28. a reversing guide gear; 29. a rust removal detection spring seat; 30. a rust removal detection spring; 31. a derusting detection slide block; 32. derusting a jacking block; 33. derusting the ejector rod; 34. a derusting pressure push rod; 35. a derusting pressure spring; 36. derusting the pressure ring; 37. a rust removal nozzle; 38. a rust removal valve spring; 39. a derusting valve; 40. a valve-closing turntable spring; 41. closing the valve detection disc; 42. a reversing piston; 43. a reversing push rod; 44. a reversing rack; 45. a liquid outlet; 46. a reversing liquid inlet; 47. a reversing expansion liquid cavity; 48. a reversing expansion piston; 49. a reversing expansion push rod; 50. a reversing rack top block; 51. a top block spring; 52. a pressure ring spring; 53. a reversing gear; 81. a valve closing rust removal component; 82. an automatic reversing component; 83. a fire extinguishing and cooling component.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-10, a high temperature resistant safety valve comprises a valve body 10, a valve rust removing part 81 is arranged at the center inside the valve body 10, an automatic reversing part 82 is arranged on one side, away from the ground, of the valve rust removing part 81 inside the valve body 10, a fire extinguishing and cooling part 83 is arranged on one side, away from the automatic reversing part 82, of the valve rust removing part 81 inside the valve body 10, a liquid inlet 17 is formed in one side, away from the automatic reversing part 82, of the valve rust removing part 81 inside the valve body 10, and liquid outlets 45 are formed in three directions of the communication position of the inside of the valve body 10 and the liquid inlet 17.

Furthermore, the valve closing rust removing component 81 is contacted and linked with the automatic reversing component 82, the fire extinguishing and temperature reducing component 83 leads to the outside of the valve body 10, and the automatic reversing component 82 takes the liquid in the liquid inlet 17 as the driving force.

Further, the valve closing rust removing component 81 comprises a reversing column 16, the reversing column 16 is rotatably connected with the valve body 10, a nut 20 is fixedly arranged at the center of the interior of the reversing column 16, a screw rod 19 is connected with the interior of the nut 20 in a threaded manner, a valve closing sealing ring 18 is rotatably arranged at one end, close to the nut 20, of the screw rod 19, a related valve detection disc 41 is slidably sleeved on the screw rod 19 in a direction away from the nut 20, a related valve rotating disc 12 is rotatably sleeved on the outer side of the valve closing detection disc 41, the valve closing rotating disc 12 is rotatably contacted with the reversing column 16, a related valve tooth ring 13 is fixedly arranged on one side, close to the valve sealing ring 18, of the valve closing rotating disc 12, a related valve motor 15 is fixedly arranged on one side, located on the screw rod 19, of the interior of the reversing column 16, a related valve pinion 14 is fixedly arranged at the output end of the valve closing motor 15, the valve pinion 14 is meshed with the valve closing tooth ring 13, and a rust removing agent cavity 23 is fixedly arranged on one side, located on one side, far away from the screw rod 19, away from the valve motor 15, of the interior of the reversing column 16.

Further, a valve closing rotating disc 12 is connected with a valve closing detecting disc 41 through a valve closing rotating disc spring 40, a rust removal detecting slide block 31 is arranged inside the valve closing rotating disc 12 at the position of the valve closing rotating disc spring 40 in a sliding mode, a rust removal detecting spring seat 29 is fixedly arranged inside the valve closing rotating disc 12 at the side, far away from the valve closing rotating disc spring 40, of the rust removal detecting slide block 31, the rust removal detecting spring seat 29 is connected with the rust removal detecting spring 30, a rust removal pressure ring 36 is arranged inside the valve closing rotating disc 12 at the position of the rust removal detecting spring seat 29 in a sliding mode, liquid is filled between the rust removal pressure ring 36 and the rust removal detecting spring seat 29, a rust removal pressure push rod 34 is fixedly arranged on the side, far away from the rust removal detecting spring seat 29, of the rust removal pressure ring 36 and the valve closing rotating disc 12 are connected through the rust removal pressure spring 35, a rust removal top block 32 is sleeved on the contact surface of the reversing column 16 and the valve closing rotating disc 12 around the screw rod 19, the derusting pressure push rod 34 is aligned with the derusting push block 32, a derusting push rod 33 is fixedly arranged on one side of the derusting push block 32, which is far away from the derusting pressure push rod 34, a derusting valve 39 is fixedly arranged on one end of the derusting push rod 33, which is far away from the derusting pressure push rod 34, the derusting valve 39 is in sliding connection with the reversing column 16, the derusting valve 39 is connected with the reversing column 16 through a derusting valve spring 38, and a plurality of derusting nozzles 37 are arranged on the inner side wall of the reversing column 16, which faces the screw rod 19.

Further, the automatic reversing component 82 comprises a reversing gear 53, the reversing gear 53 is fixedly arranged at the top of the reversing column 16, a reversing guide gear 28 is rotatably arranged at the top of the reversing gear 53, the reversing gear 53 is aligned with the gear teeth of the reversing guide gear 28, reversing pistons 42 are respectively arranged inside the valve body 10 at two sides of the reversing guide gear 28 in a sliding manner, a reversing push rod 43 is fixedly arranged at one side of the reversing piston 42 close to the reversing guide gear 28, a reversing rack 44 is arranged at one side of the reversing push rod 43 far away from the reversing piston 42 in a sliding manner, the reversing rack 44 is in meshing contact with the reversing guide gear 28, a reversing expansion piston 48 is arranged inside the valve body 10 at the top of the reversing rack 44 in a sliding manner, a reversing expansion push rod 49 is fixedly arranged at one side of the reversing expansion piston 48 close to the reversing rack 44, a reversing expansion liquid chamber 47 is arranged inside the valve body 10 at one side of the reversing expansion piston 48 far away from the reversing expansion push rod 49, a reversing rack top block 50 is arranged on one side, far away from the reversing expansion push rod 49, of the reversing rack 44 in a sliding mode, and the reversing rack top block 50 is connected with the valve body 10 through a top block spring 51.

Further, the fire extinguishing and temperature reducing component 83 comprises a water spraying valve block 24, the water spraying valve block 24 is slidably arranged on one side of the reversing column 16, the water spraying valve block 24 is connected with the valve body 10 through a water spraying spring 22, a water spraying push rod 25 is fixedly arranged on one side, away from the water spraying spring 22, of the water spraying valve block 24, an expansion liquid cavity 27 is formed in one side, away from the water spraying valve block 24, of the water spraying push rod 25, a water inlet 21 is formed in the position, facing the direction of the water spraying spring 22, of the water spraying valve block 24 inside the valve body 10, a water outlet 26 is formed in the position, facing the direction of the water spraying push rod 25, of the water spraying valve block 24, a plurality of fire extinguishing nozzles 11 are fixedly arranged on the side wall of the outer circumference of the valve body 10, and the plurality of fire extinguishing nozzles 11 are communicated with the water outlet 26.

Principle of operation

When the high temperature resistant relief valve begins to start under by quiescent condition, the external condition of a fire that takes place, ambient temperature risees, and liquid is heated the inflation in the inflation liquid chamber 27, promotes water spray push rod 25 and drives water spray valve block 24 and remove towards water spray spring 22 direction, and water inlet 21 switches on with delivery port 26, and rivers are put out a fire the cooling from a plurality of shower nozzles 11 blowout of putting out a fire to valve body 10 surrounding environment and valve body 10 body.

When ignition points are relatively concentrated, the temperature borne by the valve body 10 is relatively uneven, expansion liquid in the reversing expansion liquid cavities 47 on the two sides is heated and expanded, but the expansion degrees are different, the reversing expansion piston 48 drives the reversing expansion push rod 49 to move towards the reversing rack 44, the reversing expansion push rod 49 pushes the reversing rack 44 to move towards the reversing rack top block 50, the reversing rack 44 on the side with higher temperature is firstly separated from the reversing guide gear 28 and meshed with the reversing gear 53, the reversing rack 44 pushes the reversing gear 53 to drive the reversing column 16 to rotate, the liquid outlet of the reversing column 16 is aligned with the liquid outlet 45 on the low-temperature side, and when important liquid is conveyed continuously, the liquid is guided into the low-temperature side to ensure safety.

When the temperature of the environment is too high due to the out-of-control fire, the valve closing motor 15 is started to drive the valve closing toothed ring 13 to rotate through the valve closing pinion 14, the valve closing toothed ring 13 drives the valve closing rotating disc 12 to rotate, the valve closing rotating disc 12 drives the valve closing detecting disc 41 to rotate through the extruding derusting detecting slide block 31 and the valve closing rotating disc spring 40, if the screw rod 19 and the nut 20 cannot rotate due to corrosion, the valve closing rotating disc 12 continues to rotate and extrudes the derusting detecting slide block 31, so the derusting detecting slide block 31 moves towards the derusting detecting spring seat 29 and extrudes liquid, the derusting pressure ring 36 drives the derusting pressure push rod 34 to move towards the derusting push block 32 and pushes the derusting push rod 32 to move towards the derusting push rod 33, the derusting valve 39 moves towards the derusting valve spring 38, the derusting agent cavity 23 is communicated with the plurality of derusting nozzles 37, the derusting liquid is sprayed from the derusting nozzles 37 to the connection part of the screw rod 19 and the nut 20 to complete derusting, the valve closing rotating disc 12 continues to drive the valve closing detection disc 41 to rotate so as to complete valve closing.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.