CN211715858U

CN211715858U - Novel nitrogen supply valve with director

Info

Publication number: CN211715858U
Application number: CN202020352707.XU
Authority: CN
Inventors: 汤恒
Original assignee: Hangzhou Fuyang Fu Heng Instrument Valve Co ltd
Current assignee: Hangzhou Fuyang Fu Heng Instrument Valve Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-10-20
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a novel nitrogen supply valve with a director, which comprises a valve body, a valve cover arranged on the valve body, an actuator arranged on the valve cover, and a director arranged on the actuator; the automatic pilot valve is characterized in that the pilot comprises a pilot valve body, a pilot valve rod is slidably mounted on the pilot valve body, and a pilot valve core is mounted at one end of the pilot valve rod; the commander valve body is provided with a commander membrane cover through a bolt, the commander membrane cover comprises a commander upper membrane cover and a commander lower membrane cover, and the commander membrane cover is provided with a commander membrane and a commander tray. The utility model reduces the friction force between the valve core of the commander and the valve rod of the commander by inversely installing the valve core of the commander, thereby increasing the adjustment precision, and the valve core of the commander is provided with the rubber lining seal which is conical, thus being not easy to fall off, having high pressure resistance and good working stability; through design medium flow path on the commander valve body, save external pipe, compact structure reduces weight.

Description

Novel nitrogen supply valve with director

Technical Field

The utility model relates to a valve field specifically indicates a novel take commander to supply nitrogen valve.

Background

The self-operated regulating valve drives the valve to automatically work by taking the pressure and the temperature of the medium flowing through the valve as energy sources without an external power supply and a secondary instrument, and is also called as a self-operated control valve, wherein a feedback signal (pressure, differential pressure and temperature) at the output end of the valve is transmitted to an actuating mechanism through a signal pipe to drive the valve clack to change the opening degree of the valve, so that the purposes of regulating the pressure, the flow and the temperature are achieved; a micro-pressure self-operated regulating valve in a self-operated regulating valve is generally used for micro-pressure control of various industrial gases such as nitrogen seal of a storage tank, coal gas, natural gas, liquefied gas, oxygen, nitrogen and the like, the conventional self-operated regulating valve is complex in structure, large in number of parts and high in assembly difficulty, the conventional self-operated pressure regulating valve needs manual or mechanical control, the capacity of controlling the pressure fluctuation range is small, the pressure behind the valve is not constant, energy can not be saved in the control aspect of the regulating valve due to the input of manpower or machinery, a command device is additionally arranged on the regulating valve in many conventional regulating valves and is automatically controlled through the command device, but the overall appearance of the general additional command device is increased, the weight is heavy, and a small valve core in the general command device is low in regulating precision and poor in sealing. Therefore, a novel nitrogen supply valve with a director is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems and providing a novel nitrogen supply valve with a director.

In order to achieve the above purpose, the utility model provides a following technical scheme: a novel nitrogen supply valve with a director comprises a valve body, a valve cover arranged on the valve body, an actuator arranged on the valve cover, and the director arranged on the actuator; the automatic pilot valve is characterized in that the pilot comprises a pilot valve body, a pilot valve rod is slidably mounted on the pilot valve body, and a pilot valve core is mounted at one end of the pilot valve rod; the pilot valve comprises a pilot valve body and is characterized in that a pilot valve membrane cover is mounted on the pilot valve body through a bolt, the pilot valve membrane cover is divided into a pilot upper membrane cover and a pilot lower membrane cover, a pilot membrane and a pilot tray are mounted on the pilot valve membrane cover, a spring guide disc is mounted on the pilot tray, and the other end of a pilot valve rod is fixedly connected with the pilot membrane, the pilot tray and the spring guide disc through bolts.

Further preferably, the commander membrane is covered and is still installed a pressure regulating section of thick bamboo, install the pressure regulating lead screw on the pressure regulating section of thick bamboo, install the spacing dish of spring on the pressure regulating lead screw, install the spring between spacing dish of spring and the spring positioning disk.

Preferably, the valve body is provided with a valve seat and a guide sleeve, the guide sleeve is provided with a valve rod in a sliding manner, and one end of the valve rod is provided with a valve core; the actuator comprises an upper membrane cover, a lower membrane cover and a membrane, the actuator is fixedly installed on the valve cover through the lower membrane cover, the membrane is installed between the upper membrane cover and the lower membrane cover, the upper membrane cover and the lower membrane cover are fixedly connected through bolts, a tray is installed on the membrane, and one end of the valve rod penetrates through the valve cover and is fixedly connected with the tray and the membrane through bolts; a spring limiting groove is formed in the valve cover, and an actuating spring is arranged between the tray and the spring limiting groove; and a valve rear inlet is arranged on the lower membrane cover.

Further preferably, a valve front flow path is arranged on the valve body; a medium flow path is arranged on the director valve body; a pressure guide pipe A is connected between the flow path in front of the valve and the medium flow path, and a pressure reducer is installed on the pressure guide pipe A; the lower membrane cover of the commander is provided with a medium inlet, and the medium inlet and the medium flow path are connected with a pressure guide pipe B.

Preferably, a constant-throttling adjustable screw is mounted on a medium flow path on the commander valve body, and a cone sealing surface matched with the medium flow path is arranged at the end of the constant-throttling adjustable screw.

Further preferably, a rubber lining seal is arranged on the director valve core, and the rubber lining seal is tapered.

The utility model reduces the friction force between the valve core of the commander and the valve rod of the commander by inversely installing the valve core of the commander, thereby increasing the adjustment precision, and the valve core of the commander is provided with the rubber lining seal which is conical, thus being not easy to fall off, having high pressure resistance and good working stability; through design medium flow path on the commander valve body, save external pipe, compact structure reduces weight.

Drawings

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

FIG. 2 is a schematic view of the enlarged partial structure of the present invention;

FIG. 3 is a schematic view of the enlarged partial structure of the present invention;

fig. 4 is a schematic view of a partial structure of the present invention.

Illustration of the drawings: 1. a valve body; 2. a valve cover; 3. an actuator; 4. a director; 5. a commander valve body; 6. a commander valve stem; 7. a commander valve core; 8. a commander membrane cover; 9. a membrane cover is arranged on the commander; 10. a lower membrane cover of the commander; 11. a commander diaphragm; 12. a director tray; 13. a spring guide plate; 14. a pressure regulating cylinder; 15. a pressure regulating screw rod; 16. a spring limiting disc; 17. a spring; 18. a valve seat; 19. a guide sleeve; 20. a valve stem; 21. a valve core; 22. covering with a film; 23. a lower film cover; 24. a membrane; 25. a tray; 26. a spring limiting groove; 27. an actuator spring; 28. a valve rear inlet; 29. a pre-valve flow path; 30. a medium flow path; 31. a pressure guide pipe A; 32. a pressure reducer; 33. a media inlet; 34. a constant throttle adjustable screw; 35. a cone sealing surface; 36. lining with rubber and sealing; 37. a pressure guide pipe B; 38. a commander valve seat; 39. an upper cavity; 40. and a lower cavity.

Detailed Description

The nitrogen supply valve with the pilot valve according to the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-4, the novel nitrogen supply valve with a director of the present embodiment includes a valve body 1, a valve cover 2 mounted on the valve body 1, an actuator 3 mounted on the valve cover 2, and a director 4 mounted on the actuator 3; the automatic pilot valve is characterized in that the pilot 4 comprises a pilot valve body 5, a pilot valve rod 6 is slidably mounted on the pilot valve body 5, and a pilot valve core 7 is mounted at one end of the pilot valve rod 6; the commander valve body 5 is provided with a commander membrane cover 8 through bolts, the commander membrane cover 8 is divided into a commander upper membrane cover 9 and a commander lower membrane cover 10, the commander membrane cover 8 is provided with a commander membrane 11 and a commander tray 12, the commander tray 12 is provided with a spring guide disc 13, and the other end of the commander valve rod 6 is fixedly connected with the commander membrane 11, the commander tray 12 and the spring guide disc 13 through bolts; the membrane cover 8 of the director is also provided with a pressure regulating barrel 14, the pressure regulating barrel 14 is provided with a pressure regulating screw rod 15, the pressure regulating screw rod 15 is provided with a spring limiting disc 16, and a spring 17 is arranged between the spring limiting disc 16 and a spring guide disc 13; a valve seat 18 and a guide sleeve 19 are installed on the valve body 1, a valve rod 20 is installed on the guide sleeve 19 in a sliding mode, and a valve core 21 is installed at one end of the valve rod 20; the actuator 3 comprises an upper membrane cover 22, a lower membrane cover 23 and a membrane 24, the actuator 3 is fixedly installed on the valve cover 2 through the lower membrane cover 23, the membrane 24 is installed between the upper membrane cover 22 and the lower membrane cover 23, the upper membrane cover 22 and the lower membrane cover 23 are fixedly connected through bolts, a tray 25 is installed on the membrane 24, and one end of the valve rod 20 penetrates through the valve cover 2 and is fixedly connected with the tray 25 and the membrane 24 through bolts; a spring limiting groove 26 is formed in the valve cover 2, and an actuating spring 27 is installed between the tray 25 and the spring limiting groove 26; the lower membrane cover 23 is provided with a valve rear inlet 28; a valve front flow path 29 is arranged on the valve body 1; the director valve body 5 is provided with a medium flow path 30; a pressure guide pipe A31 is connected between the pre-valve flow path 29 and the medium flow path 30, and a pressure reducer 32 is mounted on the pressure guide pipe A31; the lower membrane cover 10 of the director is provided with a medium inlet 33, and the medium inlet 33 and the medium flow path 30 are connected with a pressure guide pipe B37; a constant-throttling adjustable screw 34 is arranged on a medium flow path 30 on the commander valve body 5, and a cone sealing surface 35 matched with the medium flow path 30 is arranged at the end part of the constant-throttling adjustable screw 34; the pilot valve core 7 is provided with a rubber lining seal 36, and the rubber lining seal 36 is tapered.

The working process of the embodiment: the medium flows into the valve body 1 before passing through the valve, part of the medium flows into the pressure guide pipe A31 before passing through the valve on the valve body 1, flows into the director valve body 5 after being decompressed by the decompressor 32 on the way, flows to the medium flow path 30 on the director valve body 5 through the interception area between the director valve core 7 and the director valve seat 38, flows to two ways in the medium flow path 30, one way flows to the upper cavity 39 of the actuator 3, the other path flows to the lower cavity 40 of the actuator 3 through the pressure guide pipe B after passing through the constant-throttle adjustable screw 34, the throttling area between the cone sealing surface 35 and the medium flow path 30 is adjusted through the constant throttling adjustable screw 34, the medium flow rate flowing to the lower cavity 40 of the actuator 3 is reduced, the medium flow rate and the pressure flowing to the upper cavity 39 are larger than those of the lower cavity 40, thereby pushing the valve rod 20 to move downwards through the membrane 24, and driving the valve core 21 to move through the valve rod 20, so that the flow path on the valve body 1 is opened; when the pressure behind the valve rises, the medium behind the valve flows into between the lower membrane cover 10 of the commander and the diaphragm 11 of the commander through the inlet 28 behind the valve, push the diaphragm 24 to extrude the spring 17 upwards, drive the valve rod 6 of the commander to move upwards, thus drive the valve core 7 of the commander to move upwards, reduce or cut off the flow path of the valve core 7 of the commander and the valve seat 38 of the commander, thus cut off the pressure guide pipe A31, no medium is filled in the upper cavity 39 of the actuator 3 at this moment, the extrusion force received by the execution spring 27 in the lower cavity 40 of the actuator 3 is reduced, the execution spring 27 pushes the diaphragm 24 and the valve rod 20 to move upwards through the restoring force of the spring, and the medium in the upper cavity 39 flows into the lower cavity 40 through the pressure guide pipe B37, the valve rod 20 moves upwards to drive the valve core 21 to move upwards, gradually reduces or closes the flow area between the; on the contrary, when the pressure behind the valve is smaller than the set pressure, the spring 17 in the commander 4 pushes the commander valve rod 6 and the valve core 21 to move downwards through the reset force, gradually opens and increases the flow area between the commander valve core 7 and the commander valve seat 38, so that the medium flows to the upper cavity 39 through the medium flow path 30, the upper cavity 39 is pressurized, the valve rod 20 is pushed to drive the valve core 21 to move downwards, the flow path on the valve body 1 tends to increase the opening degree, and the purposes of pressurizing and pressure stabilizing are achieved.

The utility model has the advantages that: the friction force between the commander valve core 7 and the commander valve rod 6 is reduced by inversely installing the commander valve core 7, so that the adjustment precision is increased, and the rubber lining seal 36 is arranged on the commander valve core 7 and is tapered, so that the sealing effect is good, the pressure resistance is high, and the working stability is good, and the falling is difficult; by designing the medium flow path 30 on the director valve body 5, an additional pipeline does not need to be connected, external connecting pipes are saved, the structure is compact, and the weight is reduced; the flow rate of the flow guide tube B37 is controlled by adjusting the flow area between the conical seal surface 35 and the medium flow path 30 by the arrangement of the constant flow rate adjustable screw 34.

The scope of the present invention is not limited to the above embodiments and their variations. The present invention is not limited to the above embodiments, and other modifications and substitutions may be made by those skilled in the art.

Claims

1. A novel nitrogen supply valve with a director comprises a valve body (1), a valve cover (2) arranged on the valve body (1), an actuator (3) arranged on the valve cover (2), and a director (4) arranged on the actuator (3); the automatic pilot control system is characterized in that the pilot (4) comprises a pilot valve body (5), a pilot valve seat (38) is installed in the pilot valve body (5), a pilot valve rod (6) is installed on the pilot valve body (5) in a sliding mode, and a pilot valve core (7) is installed at one end of the pilot valve rod (6); install commander membrane lid (8) through the bolt on commander valve body (5), commander membrane lid (8) divide into on the commander membrane lid (9) and commander membrane lid (10) down, install commander diaphragm (11) and commander tray (12) on commander membrane lid (8), install spring deflector (13) on commander tray (12), commander valve rod (6) other end passes through bolt and commander diaphragm (11), commander tray (12) and spring deflector (13) fixed connection.

2. The novel nitrogen supply valve with the director as claimed in claim 1, wherein: still install pressure regulating section of thick bamboo (14) on commander membrane lid (8), install pressure regulating lead screw (15) on pressure regulating section of thick bamboo (14), install spacing dish of spring (16) on pressure regulating lead screw (15), install spring (17) between spacing dish of spring (16) and spring deflector (13).

3. The novel nitrogen supply valve with the director as claimed in claim 1, wherein: a valve seat (18) and a guide sleeve (19) are installed on the valve body (1), a valve rod (20) is installed on the guide sleeve (19) in a sliding mode, and a valve core (21) is installed at one end of the valve rod (20); the actuator (3) comprises an upper membrane cover (22), a lower membrane cover (23) and a membrane (24), the actuator (3) is fixedly installed on the valve cover (2) through the lower membrane cover (23), the membrane (24) is installed between the upper membrane cover (22) and the lower membrane cover (23), the upper membrane cover (22) and the lower membrane cover (23) are fixedly connected through bolts, a tray (25) is installed on the membrane (24), and one end of the valve rod (20) penetrates through the valve cover (2) and is fixedly connected with the tray (25) and the membrane (24) through bolts; a spring limiting groove (26) is formed in the valve cover (2), and an actuating spring (27) is installed between the tray (25) and the spring limiting groove (26); and a valve rear inlet (28) is arranged on the lower membrane cover (23).

4. The novel nitrogen supply valve with the director as claimed in claim 1, wherein: a valve front flow path (29) is arranged on the valve body (1); a medium flow path (30) is arranged on the director valve body (5); a pressure guide pipe A (31) is connected between the pre-valve flow path (29) and the medium flow path (30), and a pressure reducer (32) is mounted on the pressure guide pipe A (31); the lower membrane cover (10) of the director is provided with a medium inlet (33), and the medium inlet (33) and the medium flow path (30) are connected with a pressure guide pipe B (37).

5. The novel nitrogen supply valve with the director as claimed in claim 4, wherein: a constant-throttling adjustable screw (34) is mounted on a medium flow path (30) on the commander valve body (5), and a cone sealing surface (35) matched with the medium flow path (30) is arranged at the end part of the constant-throttling adjustable screw (34).

6. The novel nitrogen supply valve with the director as claimed in claim 1, wherein: and a rubber lining seal (36) is arranged on the director valve core (7), and the rubber lining seal (36) is tapered.

7. The novel nitrogen supply valve with the director as claimed in claim 3, wherein: an upper cavity (39) is formed between the upper film cover (22) and the diaphragm (24), and a lower cavity (40) is formed between the lower film cover (23) and the diaphragm (24).