CN211901711U

CN211901711U - Novel nitrogen seal regulating valve

Info

Publication number: CN211901711U
Application number: CN202020347188.8U
Authority: CN
Inventors: 徐宏伟; 张居平
Original assignee: Zhejiang Bohan Fluid Control Equipment Co ltd
Current assignee: Zhejiang Bohan Fluid Control Equipment Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-11-10
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses a novel nitrogen seals governing valve, which comprises a valve body, disk seat and valve gap, the S-shaped passageway has been seted up in the valve body, the disk seat is fixed in the S-shaped passageway, the valve gap passes through bolted connection with the valve body, still including setting up the actuating mechanism who is used for switching valve on the valve body and setting up the detection device who is used for detecting pressure on the valve body, detection device includes little valve body, little case and little valve seat, little valve body is fixed in on the actuating mechanism, it is complicated to have solved nitrogen seal governing valve structure on the current market, the reaction is sensitive inadequately, it is more to produce the contact of leaking, there is certain potential safety hazard, and actuating mechanism is before going on, but does not carry out certain regulation to pressure, the short.

Description

Novel nitrogen seal regulating valve

Technical Field

The utility model relates to a valve equipment technical field, in particular to novel nitrogen seals governing valve.

Background

At present, in a gas seal system of a storage tank in the chemical industry, a nitrogen seal adjusting valve is needed, the storage tank chemical raw materials are required to be isolated from air, and inert gas (such as nitrogen) needs to be supplemented to the storage tank. This gas supply requires the use of a nitrogen seal regulating valve.

The nitrogen seal adjusting valve on the existing market is complex in structure, not sensitive enough in reaction, more in leakage generating contact, and short in service life, and has certain potential safety hazard because an executing mechanism does not adjust pressure to a certain extent before going on.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel nitrogen seals governing valve, it is complicated to have solved the nitrogen seal governing valve structure on the current market, and the reaction is sensitive inadequately, and it is more to produce the contact of leaking, has certain potential safety hazard, and actuating mechanism before going on, but does not carry out certain regulation, problem that the life-span is shorter to pressure.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a novel nitrogen seal regulating valve comprises a valve body, a valve seat and a valve cover, wherein an S-shaped channel is formed in the valve body, the valve seat is fixed in the S-shaped channel, the valve cover is connected with the valve body through a bolt, the novel nitrogen seal regulating valve also comprises an actuating mechanism which is arranged on the valve body and used for switching on and off a valve and a detection device which is arranged on the valve body and used for detecting pressure, the detection device comprises a small valve body, a small valve element and a small valve seat, the small valve body is fixed on the actuating mechanism, a sliding block which is in sliding fit with the small valve body is arranged in the small valve body, a sliding way is formed in the sliding block, the small valve element is arranged in the sliding way and is in sliding fit with the sliding way, the small valve seat is fixedly connected with the sliding block, a cavity is formed in the small valve body, a push rod which is in sliding fit with the small valve seat is arranged, the novel pressure-measuring valve is characterized in that a bolt in threaded fit with the small valve body is arranged in the small valve body, a sharp rod is fixed at the lower end of the bolt, a first bottom cover connected with the small valve body through a bolt is arranged on the first bottom cover, a first top cover connected with the first bottom cover through a bolt is fixed on the first top cover, a detection spring is arranged in the adjustment cylinder, an adjusting screw in threaded fit with the inner wall of the adjustment cylinder is arranged in the adjustment cylinder, a detection diaphragm is connected between the first bottom cover and the first top cover through a bolt, a first base plate and a second base plate connected with a push rod through a bolt are arranged on two sides of the detection diaphragm through the push rod, an L-shaped channel II communicated with a slide way is symmetrically arranged on the slide way, a second spring.

By adopting the technical scheme, the pressure taking hole behind the valve is communicated with an external storage tank, the medium in the storage tank enters the detection membrane chamber, when the pressure of the storage tank is lower than the set pressure, the detection spring drives the push rod to move, the push rod moves to drive the small valve core to move, meanwhile, the pressure before the valve enters the front of the small valve body, the pressure before the valve enters the slideway from the L-shaped channel II, the small valve core and the small valve seat regulate the pressure before the valve, then the valve enters the first L-shaped channel, the bolt rotates to drive the sharp rod to rotate by rotating the bolt, the sharp rod moves up and down while rotating to adjust the first L-shaped channel, finally the valve enters the execution mechanism, the execution mechanism switches the valve, otherwise, when the pressure of the storage tank is higher than the set pressure, the detection spring drives the push rod to move, the push rod moves to drive the small valve element to move, the small valve body is closed, and the valve is closed by the actuating mechanism.

Preferably, the executing mechanism comprises a valve rod, a second bottom cover and a second top cover, the second bottom cover is connected to the valve cover through a bolt, the second top cover is connected with the second bottom cover through a bolt, the second top cover is connected with the small valve body through a bolt, a second diaphragm which is connected with the second bottom cover and the second top cover through bolts is arranged between the second bottom cover and the second top cover, the valve rod is in sliding fit with the valve cover, a main valve core is fixed at one end of the valve rod and matched with the valve seat, the valve rod penetrates through the second diaphragm, the two sides of the second diaphragm are connected with a third bottom plate and a fourth bottom plate through bolts, a third spring is arranged between the third bottom plate and the second top cover, a channel is formed in the valve rod, and a sealing assembly is arranged.

By adopting the technical scheme, when the valve is to be opened and closed, the elastic force of the spring III drives the base plate III and the base plate four-way valve body to move, the base plate III and the base plate four move to drive the diaphragm II and the valve rod to move towards the valve body, the valve rod moves to drive the valve core of the main valve to move towards the valve body, and the valve core of the main valve moves to open the valve, so that the valve is controlled to be opened and closed and the opening and closing degree of the.

Preferably, an air inlet channel is formed in the small valve body and communicated with the L-shaped channel II, an air inlet pipe is fixed on the small valve body, and a pressure reducing valve is fixed on the air inlet pipe.

By adopting the technical scheme, the pressure reducing valve reduces the pressure before the valve, and the reduced pressure enters from the air inlet pipe, so that the functions of reducing pressure and air inlet are achieved.

Preferably, the sealing assembly comprises a V-shaped sealing packing and a sealing sleeve, the sealing sleeve is sleeved on the valve rod, the valve rod is in sliding fit with the sealing sleeve, the sealing sleeve is fixedly connected with the valve cover, and the V-shaped sealing packing is arranged in a gap between the valve rod and the valve cover.

By adopting the technical scheme, the sealing sleeve and the V-shaped sealing packing play a role in sealing between the valve rod and the valve cover.

Preferably, the adjusting cylinder is provided with a cylinder cover in threaded fit with the adjusting cylinder.

By adopting the technical scheme, the barrel cover plays a role in preventing the adjusting screw from rotating out.

Preferably, both ends of the valve body are provided with connecting holes.

By adopting the technical scheme, the connecting hole plays a role in facilitating the connection of the valve body and the pipeline.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic diagram showing the positions of the seal assembly, main valve spool, passage and valve stem;

fig. 3 is a schematic structural diagram for showing the detection device.

Reference numerals: 1. a valve body; 2. a valve seat; 3. a valve cover; 4. an S-shaped channel; 5. an actuator; 6. a detection device; 7. a small valve body; 8. a small valve core; 9. a small valve seat; 10. a slider; 11. a slideway; 12. a cavity; 13. a push rod; 14. an L-shaped channel I; 15. a bolt; 16. a sharp rod; 17. a first bottom cover; 18. a first top cover; 19. an adjusting cylinder; 20. detecting a spring; 21. an adjusting screw; 22. detecting the membrane; 23. a first chassis; 24. a second chassis; 25. an L-shaped channel II; 26. a second spring; 27. pressure tapping; 28. a valve stem; 29. a second bottom cover; 30. a second top cover; 31. a second membrane; 32. a main valve spool; 33. a third chassis; 34. a fourth chassis; 35. a third spring; 36. a seal assembly; 37. an air intake passage; 38. an air inlet pipe; 39. a pressure reducing valve; 40. v-shaped sealing filler; 41. sealing sleeves; 42. a cylinder cover; 43. connecting holes; 44. a channel.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

Referring to fig. 1 to 3, a novel nitrogen seal regulating valve comprises a valve body 1, a valve seat 2 and a valve cover 3, wherein an S-shaped channel 4 is arranged in the valve body 1, the valve seat 2 is fixed in the S-shaped channel 4, the valve cover 3 is connected with the valve body 1 through a bolt, the novel nitrogen seal regulating valve also comprises an actuating mechanism 5 arranged on the valve body 1 and used for switching on and off the valve, and a detection device 6 arranged on the valve body 1 and used for detecting pressure, the detection device 6 comprises a small valve body 7, a small valve core 8 and a small valve seat 9, a sliding block 10 in sliding fit with the small valve body 7 is arranged in the small valve body 7, the sliding block 10 is provided with a sliding way 11, the small valve core 8 is arranged in the sliding way 11, the small valve core 8 is in sliding fit with the sliding way 11, the small valve seat 9 is fixedly connected with the sliding block 10, a cavity 12 is arranged on the small valve body 7, an L-shaped channel 14 is arranged in, firstly, a bolt 15 is rotated, the bolt 15 rotates to drive a sharp rod 16 to rotate, the sharp rod 16 rotates and moves up and down simultaneously, the sharp rod 16 adjusts a first L-shaped channel 14, a push rod 13 which is in sliding fit with the small valve seat 9 is arranged on the small valve seat 9, a small valve core 8 penetrates through the side wall of a cavity 12 and is fixedly connected with the push rod 13, a first bottom cover 17 which is connected with the small valve body 7 through a bolt is arranged on the first bottom cover 17, a first top cover 18 is connected with the first bottom cover 17 through a bolt, an adjusting cylinder 19 is fixed on the first top cover 18, a detection spring 20 is arranged in the adjusting cylinder 19, an adjusting screw 21 which is in threaded fit with the inner wall of the adjusting cylinder 19 is arranged in the adjusting cylinder 19, a detection diaphragm 22 is connected between the first bottom cover 17 and the first top cover 18 through a bolt, a first base plate 23 and a second base plate 24 which are connected with the push rod 13 through a bolt are arranged on, the medium in the storage tank enters the detection film chamber, when the pressure of the storage tank is lower than the set pressure, the detection spring 20 drives the push rod 13 to move, the push rod 13 moves to drive the small valve core 8 to move, the L-shaped channel II 25 communicated with the slide way 11 is symmetrically arranged on the slide block 10, the spring II 26 is arranged in the slide way 11, the small valve body 7 is internally provided with the air inlet channel 37, the air inlet channel 37 is communicated with the L-shaped channel II 25, the small valve body 7 is fixedly provided with the air inlet pipe 38, the air inlet pipe 38 is fixedly provided with the pressure reducing valve 39, meanwhile, the pre-valve pressure is reduced through the pressure reducing valve 39, the pre-valve pressure enters the L-shaped channel II 25, the pre-valve pressure is adjusted through the small valve core 8 and the small valve seat.

As shown in fig. 1 and 2, the actuator 5 includes a valve rod 28, a second bottom cover 29 and a second top cover 30, the second bottom cover 29 is connected to the valve cover 3 through a bolt, the second top cover 30 is connected to the second bottom cover 29 through a bolt, the second top cover 30 is connected to the small valve body 7 through a bolt, a second diaphragm 31 connected to the second bottom cover 29 and the second top cover 30 through a bolt is disposed between the second bottom cover 29 and the second top cover 30, the valve rod 28 is in sliding fit with the valve cover 3, a main valve core 32 is fixed at one end of the valve rod 28, the main valve core 32 is matched with the valve seat 2, the valve rod 28 penetrates through the second diaphragm 31, a third chassis 33 and a fourth chassis 34 are connected to two sides of the second diaphragm 31 through bolts, a third spring 35 is disposed between the third chassis 33 and the second top cover 30, the valve is opened, liquid enters the storage tank through the throttle of the main valve core 32 and the valve seat 2, the push rod 13 moves to drive the small valve core 8 to move, the elastic force of the spring III 35 drives the chassis III 33 and the chassis IV 34 to move, the chassis III 33 and the chassis IV 34 move to drive the valve rod 28 to the valve seat 2, the valve seat 2 moves to drive the main valve core 32 to move, the main valve core 32 moves to the valve seat 2, and the valve is closed.

As shown in fig. 2, a sealing assembly 36 is arranged on the valve cap 3, the sealing assembly 36 includes a V-shaped sealing packing 40 and a sealing sleeve 41, the sealing sleeve 41 is sleeved on the valve rod 28, the valve rod 28 is in sliding fit with the sealing sleeve 41, the sealing sleeve 41 is fixedly connected with the valve cap 3, the V-shaped sealing packing 40 is arranged in a gap between the valve rod 28 and the valve cap 3, and the sealing sleeve 41 and the V-shaped sealing packing 40 play a role in sealing between the valve rod 28 and the valve cap 3.

As shown in fig. 1, the adjusting cylinder 19 is provided with a cylinder cover 42 in threaded fit with the adjusting cylinder 19, and the cylinder cover 42 plays a role of preventing the adjusting screw 21 from rotating out; connecting holes 43 are formed in the two ends of the valve body 1, and the connecting holes 43 play a role in facilitating connection of the valve body 1 and a pipeline.

Claims

1. A novel nitrogen sealing regulating valve comprises a valve body (1), a valve seat (2) and a valve cover (3), wherein an S-shaped channel (4) is formed in the valve body (1), the valve seat (2) is fixed in the S-shaped channel (4), the valve cover (3) is connected with the valve body (1) through a bolt, the novel nitrogen sealing regulating valve is characterized by further comprising an actuating mechanism (5) which is arranged on the valve body (1) and used for switching on and off the valve and a detection device (6) which is arranged on the valve body (1) and used for detecting pressure, the detection device (6) comprises a small valve body (7), a small valve core (8) and a small valve seat (9), the small valve body (7) is fixed on the actuating mechanism (5), a sliding block (10) which is in sliding fit with the small valve body (7) is arranged in the small valve body (7), the sliding block (10) is provided with a sliding way (11), and the small valve, the small valve core (8) is in sliding fit with the slide way (11), the small valve seat (9) is fixedly connected with the slide block (10), the small valve body (7) is provided with a cavity (12), the small valve seat (9) is provided with a push rod (13) in sliding fit with the small valve seat (9), the small valve core (8) penetrates through the side wall of the cavity (12) and is fixedly connected with the push rod (13), the small valve body (7) is internally provided with an L-shaped channel I (14), the small valve body (7) is internally provided with a bolt (15) in threaded fit with the small valve body (7), the lower end of the bolt (15) is fixedly provided with a sharp rod (16), the small valve body (7) is provided with a bottom cover I (17) connected through a bolt, the bottom cover I (17) is connected with a top cover I (18) through a bolt, the top cover I (18) is fixedly provided with an adjusting cylinder (19), and the adjusting cylinder (19, be provided with in the regulation section of thick bamboo (19) with regulation section of thick bamboo (19) inner wall screw-thread fit's adjusting screw (21), there is detection diaphragm (22) through bolted connection between bottom (17) and top cap (18), push rod (13) are provided with chassis one (23) and chassis two (24) through bolted connection with push rod (13) in the both sides that detect diaphragm (22), the communicating L shape passageway two (25) with slide (11) are seted up to the symmetry on slider (10), be provided with spring two (26) in slide (11), seted up on bottom (17) and got pressure hole (27).

2. The novel nitrogen seal regulating valve as claimed in claim 1, wherein the actuator (5) comprises a valve rod (28), a second bottom cover (29) and a second top cover (30), the second bottom cover (29) is connected to the valve cover (3) through a bolt, the second top cover (30) is connected with the second bottom cover (29) through a bolt, the second top cover (30) is connected with the small valve body (7) through a bolt, a second diaphragm (31) which is connected with the second bottom cover (29) and the second top cover (30) through a bolt is arranged between the second bottom cover (29) and the second top cover (30), the valve rod (28) is in sliding fit with the valve cover (3), a main valve core (32) is fixed at one end of the valve rod (28), the main valve core (32) is matched with the valve seat (2), the valve rod (28) penetrates through the second diaphragm (31) and the valve rod (28) is located at two sides of the second diaphragm (31) and is connected with a third base plate (33) and a fourth base plate (, a spring III (35) is arranged between the base plate III (33) and the top cover II (30), a channel (44) is formed in the valve rod (28), and a sealing assembly (36) is arranged on the valve cover (3).

3. The novel nitrogen seal regulating valve is characterized in that an air inlet channel (37) is formed in the small valve body (7), the air inlet channel (37) is communicated with the L-shaped channel II (25), an air inlet pipe (38) is fixed on the small valve body (7), and a pressure reducing valve (39) is fixed on the air inlet pipe (38).

4. The novel nitrogen seal regulating valve is characterized in that the sealing assembly (36) comprises a V-shaped sealing packing (40) and a sealing sleeve (41), the sealing sleeve (41) is sleeved on the valve rod (28), the valve rod (28) is in sliding fit with the sealing sleeve (41), the sealing sleeve (41) is fixedly connected with the valve cover (3), and the V-shaped sealing packing (40) is arranged in a gap between the valve rod (28) and the valve cover (3).

5. The novel nitrogen seal regulating valve is characterized in that a cylinder cover (42) in threaded fit with the regulating cylinder (19) is arranged on the regulating cylinder (19).

6. The novel nitrogen seal regulating valve as claimed in claim 1, wherein both ends of the valve body (1) are provided with connecting holes (43).