CN216789398U - Pneumatic actuator with heat insulation performance for ball valve - Google Patents

Abstract

The utility model discloses a pneumatic actuator with heat insulation performance for a ball valve, which comprises a shell and a heat insulation structure, wherein the heat insulation structure comprises a bottom plate, the top surface of the bottom plate is provided with a heat insulation cavity, the top surface of the bottom plate is fixedly connected with a heat insulation top plate, the heat insulation top plate is fixedly connected to the bottom surface of the shell, a plurality of arc-shaped fins are fixedly connected in the heat insulation cavity vertically, a snake-shaped cold liquid pipe is fixedly connected in the heat insulation cavity, the snake-shaped cold liquid pipe penetrates through the arc-shaped fins, and two ends of the snake-shaped cold liquid pipe are fixedly connected with two injection pipes respectively. The thermal insulation structure is arranged to insulate the ball valve and the pneumatic actuator, so that the situation that the internal structure of the pneumatic actuator is damaged due to overhigh temperature is avoided.

Description

Pneumatic actuator with heat insulation performance for ball valve

Technical Field

The utility model relates to the technical field of pneumatic actuators, in particular to a pneumatic actuator with heat insulation performance for a ball valve.

Background

The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the flow direction switching of media on a pipeline, and can close any channel to connect the other two channels, wherein the automatic ball valve needs to be opened and closed by a pneumatic actuator, a transmission mechanism of the pneumatic actuator has a gear rack type and a shifting fork type, the gear rack type pneumatic actuator mainly drives the rotation of a shaft through the meshing movement of a piston pushing the gear rack to realize the control of the valve, and the gear and the shaft are integrated. The pneumatic actuator generally comprises a housing, a left end cover and a right end cover, which form a sealed cavity to realize the opening and closing functions of the valve. Regular maintenance and overhaul can guarantee the normal clear of production to production facility, but pneumatic actuator is because a large amount, and it is great to dismantle the engineering volume one by one when overhauing, wastes time and energy.

To this end, chinese utility model patent that the publication number is CN206361234U discloses a pneumatic actuator, this pneumatic actuator includes the casing, left end lid and right-hand member lid connect into a confined whole, be provided with in the casing with casing inner wall sealed left piston and right piston, the gear shaft passes through the rack respectively with left piston, right piston is connected, the middle part of left end lid and right-hand member lid is fixed mutually through bolt and casing respectively, the both ends of casing are provided with a plurality of hasp ring respectively, the edge of left end lid and right-hand member lid is provided with the hasp corresponding with the hasp ring of casing, the edge of left end lid and right-hand member lid is fixed mutually through taking buckle and hasp. The utility model has simple structure, compact design and convenient use, the middle parts of the left end cover and the right end cover are fixed on the shell through bolts, the edges of the left end cover and the right end cover are connected through the hasps and the hasps rings, the disassembly is convenient, the time for overhauling and maintaining is shortened, and the left end cover, the right end cover and the shell are firmly connected.

This pneumatic actuator does not set up thermal-insulated structure, and present ball valve has a lot of productions high temperature, for example steam ball valve, and start the executor casing and be the metal material mostly, the heat conductivility is strong, the part that leads to in the pneumatic actuator easily receives the high temperature and damages, this pneumatic actuator passes through hasp and bolted connection end cover in addition, though dismantle the convenience, but also influenced the stability that the end cover is connected to a certain extent, use the back for a long time and lead to the condition that produces great gap between end cover and the casing easily.

To this end, we propose a pneumatic actuator with thermal insulation properties for ball valves to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a pneumatic actuator with heat insulation for ball valve, so as to solve the problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a pneumatic actuator with heat insulation performance for a ball valve comprises a shell and a heat insulation structure, wherein the heat insulation structure comprises a bottom plate, a heat insulation cavity is formed in the top surface of the bottom plate, a heat insulation top plate is fixedly connected to the top surface of the bottom plate, and the heat insulation top plate is fixedly connected to the bottom surface of the shell;

the utility model discloses a thermal-insulated intracavity perpendicular rigid coupling a plurality of arc fins, thermal-insulated intracavity rigid coupling snakelike cold liquid pipe, snakelike cold liquid pipe passes a plurality of arc fins, two injection pipes of snakelike cold liquid pipe both ends rigid coupling respectively, injection pipe one end is passed thermal-insulated chamber lateral wall and is located bottom plate outside and rigid coupling filling opening, threaded connection sealed lid on the filling opening.

Preferably, the central position of the shell is vertically and rotatably connected with a gear shaft, the central position of the top surface of the shell is rotatably connected with a hand wheel, the hand wheel is fixedly connected with the top end of the gear shaft, and the positions, corresponding to the gear shaft, of the heat insulation top plate and the heat insulation bottom plate are vertically provided with reserved holes.

Preferably, two ends of the shell are fixedly connected with two end covers through a plurality of fixing bolts respectively, two pistons are slidably connected to the positions, close to the two end covers, in the shell, and a plurality of springs are fixedly connected between the pistons and the end covers.

Preferably, four threaded through holes are horizontally formed in four corners of the end cover respectively, four threaded holes are formed in the end portion of the shell corresponding to the four threaded through holes respectively, and the four threaded through holes and the four threaded holes are in threaded connection with four fixing bolts respectively.

Preferably, the end cover four sides are close to four picture pegs of casing one side rigid coupling respectively, casing tip edge corresponds four the picture peg position is seted up four slots respectively, the picture peg is pegged graft in the slot, the picture peg is kept away from the fixed sealing washer that cup joints in end cover one end outside, the slot corresponds the sealing washer position and is seted up the seal groove, seal groove intercommunication slot, sealing washer interference fit is in the seal groove.

Compared with the prior art, the utility model has the beneficial effects that:

the thermal insulation structure is arranged to insulate the ball valve and the pneumatic actuator, so that the situation that the internal structure of the pneumatic actuator is damaged due to overhigh temperature is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the heat insulation structure according to the present invention;

FIG. 3 is an enlarged structural view of the joint between the end cap and the housing according to the present invention;

FIG. 4 is a schematic cross-sectional view of the present invention.

In the figure: 1. a housing; 2. an end cap; 3. a thermally insulating structure; 11. a gear shaft; 12. a hand wheel; 13. a piston; 14. a spring; 21. a threaded through hole; 22. a threaded hole; 23. fixing the bolt; 24. inserting plates; 25. a seal ring; 26. a slot; 27. a sealing groove; 31. a base plate; 32. a thermally insulating top panel; 33. a thermally insulating cavity; 34. an arc-shaped fin; 35. a snake-shaped liquid cooling pipe; 36. an injection pipe; 37. an injection port; 38. a sealing cover; 39. holes are reserved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-4, the present invention provides a technical solution: a ball valve is with pneumatic actuator of heat-proof quality, including body 1 and heat-proof structure 3, the heat-proof structure 3 includes the bottom plate 31, the top surface of the bottom plate 31 offers the heat-proof cavity 33, the top surface building in of the bottom plate 31 insulates against heat the roof 32, insulate against heat the roof 32 building in the body 1 bottom surface;

a plurality of arc fins 34 are vertically and fixedly connected in the heat insulation cavity 33, a snake-shaped cold liquid pipe 35 is fixedly connected in the heat insulation cavity 33, the snake-shaped cold liquid pipe 35 penetrates through the arc fins 34, two ends of the snake-shaped cold liquid pipe 35 are fixedly connected with two injection pipes 36 respectively, one end of each injection pipe 36 penetrates through the side wall of the heat insulation cavity 33 and is positioned on the outer side of the bottom plate 31 and fixedly connected with an injection port 37, and a sealing cover 38 is in threaded connection with each injection port 37.

Example 2:

referring to fig. 2 and 4, the center of the housing 1 is vertically and rotatably connected to the gear shaft 11, the center of the top surface of the housing 1 is rotatably connected to the hand wheel 12, the hand wheel 12 is fixedly connected to the top end of the gear shaft 11, the heat insulation top plate 32 and the bottom plate 31 are vertically provided with a reserved hole 39 corresponding to the gear shaft 11, and the ball valve shaft passes through the reserved hole 39 and is connected to the bottom of the gear shaft 11 during installation.

Referring to fig. 3, two ends of the housing 1 are fixedly connected to the two end caps 2 through a plurality of fixing bolts 23, two pistons 13 are slidably connected to the interior of the housing 1 near the two end caps 2, and a plurality of springs 14 are fixedly connected between the pistons 13 and the end caps 2.

Referring to fig. 3, four threaded through holes 21 are horizontally formed at four corners of the end cover 2, four threaded holes 22 are formed at positions of the end portion of the housing 1 corresponding to the four threaded through holes 21, and four fixing bolts 23 are screwed into the four threaded through holes 21 and the four threaded holes 22.

Referring to fig. 3, four insertion plates 24 are fixedly connected to one side of the end cover 2 close to the casing 1, four insertion grooves 26 are formed in the edge of the end portion of the casing 1 corresponding to the four insertion plates 24, the insertion plates 24 are inserted into the insertion grooves 26, a sealing ring 25 is fixedly sleeved on the outer side of one end of the insertion plate 24 far away from the end cover 2, a sealing groove 27 is formed in the position of the insertion groove 26 corresponding to the sealing ring 25, the sealing groove 27 is communicated with the insertion grooves 26, and the sealing ring 25 is in interference fit with the sealing groove 27.

Example 3:

when the thermal insulation structure is used, the thermal insulation mechanism 2 is arranged at the end part of the ball valve shaft rod, and the ball valve shaft rod penetrates through the reserved hole 39 to be connected with the bottom of the gear shaft 11, the thermal insulation structure 3 is arranged, the ball valve and the pneumatic actuator are subjected to thermal insulation, the condition that the internal structure is damaged due to overhigh temperature of the pneumatic actuator is avoided, the end cover 2 is fixed through the fixing bolt 23, when the end cover 2 is disassembled for maintenance, only the fixing bolt 23 needs to be disassembled, convenience is realized, meanwhile, the plurality of inserting plates 24 are arranged to be connected with the shell 1, the connection stability is ensured, and the condition that a gap is large between the end cover 2 and the shell 1 is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a ball valve is with pneumatic actuator that has heat-proof quality, includes casing (1) and heat-insulating structure (3), its characterized in that:

the heat insulation structure (3) comprises a bottom plate (31), a heat insulation cavity (33) is formed in the top surface of the bottom plate (31), a heat insulation top plate (32) is fixedly connected to the top surface of the bottom plate (31), and the heat insulation top plate (32) is fixedly connected to the bottom surface of the shell (1);

perpendicular a plurality of arc fins of rigid coupling (34) in thermal-insulated chamber (33), snakelike cold liquid pipe of rigid coupling (35) in thermal-insulated chamber (33), snakelike cold liquid pipe (35) pass a plurality of arc fins (34), two injection pipes (36) of snakelike cold liquid pipe (35) both ends rigid coupling respectively, injection pipe (36) one end is passed thermal-insulated chamber (33) lateral wall and is located bottom plate (31) outside and rigid coupling injection port (37), threaded connection sealed lid (38) on injection port (37).

2. The pneumatic actuator with thermal insulation performance for a ball valve according to claim 1, wherein: the heat insulation device is characterized in that the central position of the shell (1) is vertically and rotatably connected with the gear shaft (11), the central position of the top surface of the shell (1) is rotatably connected with the hand wheel (12), the hand wheel (12) is fixedly connected with the top end of the gear shaft (11), and the heat insulation top plate (32) and the bottom plate (31) are vertically provided with a reserved hole (39) corresponding to the gear shaft (11).

3. The pneumatic actuator with thermal insulation performance for a ball valve according to claim 1, wherein: two ends of the shell (1) are fixedly connected with the two end covers (2) through a plurality of fixing bolts (23), two pistons (13) are slidably connected to the positions, close to the two end covers (2), in the shell (1), and a plurality of springs (14) are fixedly connected between the pistons (13) and the end covers (2).

4. The pneumatic actuator with thermal insulation performance for a ball valve according to claim 3, wherein: four threaded through holes (21) are horizontally formed in four corners of the end cover (2) respectively, four threaded holes (22) are formed in the end portion of the shell (1) corresponding to the four threaded through holes (21) respectively, and four fixing bolts (23) are connected into the four threaded through holes (21) and the four threaded holes (22) in a threaded mode respectively.

5. The pneumatic actuator with thermal insulation performance for a ball valve according to claim 4, wherein: end cover (2) four sides are close to four picture peg (24) of casing (1) one side rigid coupling respectively, casing (1) tip edge corresponds four picture peg (24) position sets up four slots (26) respectively, picture peg (24) are pegged graft in slot (26), end cover (2) one end outside is kept away from in picture peg (24) fixed the cup joint sealing washer (25), seal groove (27) are seted up to slot (26) corresponding sealing washer (25) position, seal groove (27) intercommunication slot (26), sealing washer (25) interference fit is in seal groove (27).

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