CN214699434U

CN214699434U - Micropressure self-operated regulating valve with commander

Info

Publication number: CN214699434U
Application number: CN202120547088.4U
Authority: CN
Inventors: 白舸; 白宏伟; 叶枫; 王敏花; 张世超; 付扬
Original assignee: Anshan Bell Automatic Controlling Co ltd
Current assignee: Anshan Bell Automatic Controlling Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-11-12
Anticipated expiration: 2031-03-16

Abstract

The utility model provides a take minute-pressure self-operated type governing valve of director, includes actuating mechanism, relief pressure valve, director, adjustment mechanism, two exports of relief pressure valve communicate actuating mechanism's back membrane chamber and preceding membrane chamber respectively, the lever case of director and the sealed apical grafting of the relief pressure valve nozzle export of relief pressure valve, the relief pressure valve export that the membrane chamber is linked together behind the actuating mechanism with the relief pressure valve nozzle is linked together, actuating mechanism installs the case part of lever connection adjustment mechanism in back membrane chamber. Compared with the prior art, the beneficial effects of the utility model are that: the micro-pressure self-operated regulating valve with the director has high control precision which is about one time higher than that of a common direct operation type pressure regulating valve; the adjusting pressure difference ratio is large (such as 0.8MPa before the valve and 0.001MPa after the valve), and the device is particularly suitable for micro-pressure gas control.

Description

Micropressure self-operated regulating valve with commander

Technical Field

The utility model relates to the technical field of valves, especially, relate to a take minute-pressure self-operated governing valve of director.

Background

The self-operated regulating valve is a control device which does not need external energy and can automatically regulate the medium to be measured according to the preset value by means of the self pressure or temperature or flow change of the medium to be measured. According to market needs, a micro-pressure self-operated regulating valve with a commander is developed and specially suitable for micro-pressure air pressure control.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a micro-pressure self-operated regulating valve with a director, which has high control precision and can be about one time higher than the common direct operation type regulating valve; the adjusting pressure difference ratio is large (such as 0.8MPa before the valve and 0.001MPa after the valve), and the device is particularly suitable for micro-pressure gas control.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a take minute-pressure self-operated type governing valve of director, includes actuating mechanism, relief pressure valve, director, adjustment mechanism, two exports of relief pressure valve communicate actuating mechanism's back membrane chamber and preceding membrane chamber respectively, the lever case of director and the sealed apical grafting of the relief pressure valve nozzle export of relief pressure valve, the relief pressure valve export that the membrane chamber is linked together behind the actuating mechanism with the relief pressure valve nozzle is linked together, actuating mechanism installs the case part of lever connection adjustment mechanism in back membrane chamber.

The actuating mechanism comprises an actuating mechanism diaphragm, a top disc, an adjusting rod and a lever, wherein a front diaphragm chamber is arranged on one side of the actuating mechanism diaphragm, a rear diaphragm chamber is arranged on the other side of the actuating mechanism diaphragm, the adjusting rod and the lever are arranged in the rear diaphragm chamber, the actuating mechanism diaphragm is fixedly connected with the top disc and the adjusting rod, the adjusting rod is hinged with the lever, and the lever is provided with a hinged fulcrum.

The pressure reducing valve comprises a valve seat, a nozzle, a pressure reducing valve top plate, a pressure reducing valve diaphragm pressing plate, a throttling nozzle I, a throttling nozzle II, a spring pressing cover, a pressure reducing valve spring, a nozzle spring and a pressure reducing valve nozzle, wherein the valve seat, the pressure reducing valve top plate and the pressure reducing valve spring are arranged on one side of a medium inlet of the pressure reducing valve diaphragm; the pressure reducing valve diaphragm pressing plate, the spring pressing cover and the pressure reducing valve nozzle are arranged on one side of a medium outlet of the pressure reducing valve diaphragm, two ends of the nozzle spring are respectively connected with the pressure reducing valve nozzle and the spring pressing cover in a propping manner, the pressure reducing valve diaphragm is tightly pressed by the nozzle, a pressure reducing valve top plate and the pressure reducing valve diaphragm pressing plate to form an integrated component, a medium flowing space is reserved between the spring pressing cover and the pressure reducing valve diaphragm pressing plate, an outlet of the nozzle is communicated with the medium flowing space, a throttling nozzle I and a throttling nozzle II are arranged on two sides of the pressure reducing valve nozzle, one end of the throttling nozzle I is communicated with the medium flowing space, the other end of the throttling nozzle I is communicated with an outlet C communicated with a front diaphragm chamber of an actuating mechanism, one end of the throttling nozzle II is communicated with the medium flowing space, the other end of the throttling nozzle II is communicated with an outlet B communicated with a rear diaphragm chamber of the actuating mechanism, and the other end of the throttling nozzle II is also communicated with a nozzle of a pressure reducing valve, and a medium inlet channel is arranged in the valve seat.

The central portion of the front end of the valve seat 201 is opposite to the inlet of the nozzle,

the pilot comprises a lever valve core, a connecting rod, a pilot diaphragm, a pilot top disc, a pilot spring I, a pilot spring II and a spring adjusting rod, wherein the lever valve core is provided with a hinged fulcrum, the valve core end of the lever valve core is connected with a pressure reducing valve nozzle outlet of a pressure reducing valve in a propping mode, the other end of the lever valve core is hinged with the connecting rod, the pilot top disc supports the pilot diaphragm, the connecting rod is connected with the pilot top disc, the pilot spring I is arranged between the connecting rod and the pilot top disc, the pilot spring II is connected to the other side of the pilot diaphragm in a propping mode, and the spring adjusting rod adjusts the tightness of the pilot spring II.

The adjusting mechanism comprises a valve body, an upper valve cover, a valve core component and a spring, wherein the upper valve cover is connected to the upper end of the valve body through a bolt, the valve core component extends into the valve body from the upper valve cover, the spring is sleeved on a valve rod of the valve core component, the upper end of the spring is connected with the upper valve cover in a propping mode, the lower end of the spring is connected with the lower end head of the valve core component in a propping mode, and under the action of the elastic force of the spring, a medium channel in the valve body is closed by the valve core component.

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

the micro-pressure self-operated regulating valve with the director has high control precision which is about one time higher than that of a common direct operation type pressure regulating valve; the adjusting pressure difference ratio is large (such as 0.8MPa before the valve and 0.001MPa after the valve), and the device is particularly suitable for micro-pressure gas control.

Drawings

Fig. 1 is a schematic structural view of a micro-pressure self-operated regulating valve with a pilot;

in fig. 1: 1. the system comprises an actuating mechanism, 2 a pressure reducing valve, 3 a director, 4 an adjusting mechanism and 5 a filter.

FIG. 2 is a schematic structural diagram of an actuator according to the present invention;

in fig. 2: 101. the air inlet structure comprises an air inlet 102, an actuator upper membrane cover 103, an actuator diaphragm 104, bolts I and 105, an actuator lower membrane cover 106, a nut 107, a compression screw 108, a top disc 109, a connecting piece 110, screws I and 111, a cushion block 112, an adjusting rod 113, a lever 114, a shell 115, a pressure plate I and 116, screws II and 117, a pressure plate II and 118, bolts II and 119, a cylindrical pin 120, a support seat 121, a guide sleeve 122, an O-shaped ring 123, a front membrane chamber 124 and a rear membrane chamber.

FIG. 3 is a schematic structural view of the pressure reducing valve of the present invention;

in fig. 3: 201. the pressure reducing valve comprises a valve seat, 202, a valve seat sealing gasket, 203, a guide sleeve gland, 204, a guide sleeve, 205, a nozzle, 206, a pressure reducing valve spring, 207, a pressure reducing valve top disc, 208, a pressure reducing valve diaphragm, 209, a pressure reducing valve diaphragm pressing plate, 210, a throttling nozzle I, 211, a screw, 212, a spring gland, 213, a nozzle spring, 214, a pressure reducing valve nozzle gland, 215, a pressure reducing valve auxiliary valve body, 216, an O-ring I, 217, a pressure reducing valve nozzle, 218, an O-ring II, 219, a throttling nozzle II, 220, an O-ring III, 221 and a pressure reducing valve main valve body.

Fig. 4 is a schematic structural diagram of the commander of the present invention;

in fig. 4: 301. the pilot valve comprises a screw I, a screw 302, a connecting rod support, 303, a cylindrical pin, 304, a lever valve core, 305, a pilot housing, 306, a connecting rod, 307, an adjusting screw, 308, a pilot spring I, 309, a pin, 310, an adjusting nut, 311, a thin nut, 312, an O-shaped ring, 313, a cushion, 314, a pilot upper membrane cover, 315, a pilot membrane, 316, a pilot top disc, 317, a bolt, 318, a nut I, 319, a pilot lower membrane cover, 320, a screw, 321, a spring cylinder, 322, a pilot spring II, 323, a spring seat, 324, a spring cylinder lower cover, 325, a nut II, 326 and a spring adjusting rod.

Fig. 5 is a schematic structural diagram of an adjusting mechanism in the present invention;

in fig. 5: 401. the valve comprises a valve body, 402, an upper valve cover, 403, a stud, 404, a nut, 405, an O-ring I, 406, an O-ring II, 407, an O-ring III, 408, a valve core component, 409, a spring gasket, 410, a spring, 411, a sealing gasket I, 412, a balance cylinder, 413, a sealing gasket II, 414, a balance sealing ring, 415, a sleeve, 416, a valve seat and 417, a valve seat sealing gasket.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings:

referring to fig. 1, the micro-pressure self-operated regulating valve with the commander comprises an actuating mechanism 1, a pressure reducing valve 2, a commander 3 and a regulating mechanism 4, wherein two outlets of the pressure reducing valve 2 are respectively communicated with a rear membrane chamber 124 and a front membrane chamber 123 of the actuating mechanism 1, a lever valve core 304 of the commander 3 is in sealed abutting connection with an outlet of a pressure reducing valve nozzle 217 of the pressure reducing valve 2, a pressure reducing valve outlet B communicated with the rear membrane chamber 124 of the actuating mechanism 1 is communicated with the pressure reducing valve nozzle 217, and a lever 113 of the actuating mechanism 1, which is arranged in the rear membrane chamber 124, is connected with a valve core part 408 of the regulating mechanism 4.

Referring to fig. 2, the actuator 1 includes an actuator diaphragm 103, a top plate 108, an adjusting rod 112, and a lever 113, one side of the actuator diaphragm 103 is a front diaphragm chamber 123, the other side of the actuator diaphragm 103 is a rear diaphragm chamber 124, the adjusting rod 112 and the lever 113 are disposed in the rear diaphragm chamber 124, the actuator diaphragm 103 is fixedly connected to the top plate 108 and the adjusting rod 112 through a compression screw 107, the adjusting rod 112 is hinged to the lever 113, and the lever 113 is provided with a hinge pivot.

The front diaphragm chamber 123 is communicated with the air inlet 101, the top disc 108 is connected with the connecting piece 109, the connecting piece 109 is connected with the adjusting rod 112, and the lever 113 is provided with a hook groove which is connected with the cylindrical pin 119 on the valve core component 408. The housing of the actuator 1 is connected to the valve body 401 of the adjusting mechanism 4 by means of a screw ii 118.

Referring to fig. 3, the pressure reducing valve 2 includes a valve seat 201, a nozzle 205, a pressure reducing valve top plate 207, a pressure reducing valve diaphragm 208, a pressure reducing valve diaphragm pressure plate 209, a throttling nozzle i 210, a throttling nozzle ii 219, a spring gland 212, a pressure reducing valve spring 206, a nozzle spring 213 and a pressure reducing valve nozzle 217, the valve seat 201, the pressure reducing valve top plate 207 and the pressure reducing valve spring 206 are arranged on one side of a medium inlet of the pressure reducing valve diaphragm 208, the pressure reducing valve spring 206 tightly supports the pressure reducing valve diaphragm 208 through the pressure reducing valve top plate 207, one end of an inlet of the nozzle 205 is opposite to the end of the valve seat 201, one end of an outlet of the nozzle 205 penetrates through the pressure reducing valve top plate 207 and the pressure reducing valve diaphragm 208, and an axial protrusion is arranged on the nozzle 205 and clamped on the pressure reducing valve top plate 207; the pressure reducing valve diaphragm pressing plate 209, the spring pressing cover 212 and the pressure reducing valve nozzle 217 are arranged on one side of a medium outlet of the pressure reducing valve diaphragm 208, two ends of the nozzle spring 213 are respectively connected with the pressure reducing valve nozzle 217 and the spring pressing cover 212 in a propping mode, the pressure reducing valve diaphragm is pressed by the nozzle, a pressure reducing valve top plate and the pressure reducing valve diaphragm pressing plate to form an integrated component, a medium flowing space is reserved between the spring pressing cover 212 and the pressure reducing valve diaphragm pressing plate 209, an outlet of the nozzle 205 is communicated with the medium flowing space, the throttling nozzle I210 and the throttling nozzle II 219 are arranged on two sides of the pressure reducing valve nozzle 217, one end of the throttling nozzle I210 is communicated with the medium flowing space, the other end of the throttling nozzle I210 is communicated with an outlet C communicated with a front film chamber 123 of the actuating mechanism 1, one end of the throttling nozzle II 219 is communicated with the medium flowing space, the other end of the throttling nozzle II 219 is communicated with an outlet B communicated with a rear film chamber 124 of the actuating mechanism 1, meanwhile, the other end of the throttling nozzle II 219 is also communicated with a pressure reducing valve nozzle 217.

The valve seat 201 has a media inlet passage therein. The medium outlet side of the valve seat 201 is similar to a cone, the side wall of the cone is provided with a medium outlet, the end part of the cone is opposite to the inlet of the nozzle 205, and a valve seat sealing gasket 202 is arranged at the opposite position.

The spring gland 212 and the pressure reducing valve nozzle 217 are sealed through an O-ring I216.

Referring to fig. 4, the commander 3 includes a lever spool 304, a connecting rod 306, a commander diaphragm 315, a commander top disc 316, a commander spring i 308, a commander spring ii 322, and a spring adjusting rod 326, the lever spool 304 is provided with a hinged fulcrum, a spool end of the lever spool 304 abuts against an outlet of a pressure reducing valve nozzle 217 of the pressure reducing valve 2, the other end of the lever spool 304 is hinged with the connecting rod 306, the commander top disc 316 supports the commander diaphragm 315, the connecting rod 306 is connected with the commander top disc 316, the commander spring i is arranged between the connecting rod 306 and the commander top disc 316, the commander spring ii 322 abuts against the other side of the commander diaphragm 315, and the spring adjusting rod 326 adjusts the tightness of the commander spring ii 322.

The pilot housing 305 is connected to the main valve body 221 of the pressure reducing valve on the outlet side of the pressure reducing valve nozzle 217 via a screw i 301. In the housing 305 of the commander there is a connecting rod support 302, to which connecting rod support 302 a lever spool 304 is hinged by means of a cylindrical pin 303. Connecting rod 306 bottom is through threaded connection adjusting screw 307, a spring sleeve of adjusting screw 307 outside cover, commander spring I308 is in spring sleeve and cup joints on adjusting screw 307, commander spring I308 one end apical grafting spring sleeve, the other end apical grafting adjusting screw 307 tip, the tip of spring sleeve passes through threaded connection adjusting nut 310, adjusting screw 307 tip and adjusting nut 310 apical grafting, adjust the elasticity of commander spring I308 through adjusting nut 310, the spring sleeve is through thin nut and commander top dish 316 fixed connection. One end of the director spring II 322 is provided with a spring seat 323, a spring adjusting rod 326 abuts against the spring seat 323, and the abutting length of the spring seat 323 is adjusted through threads.

Referring to fig. 5, the adjusting mechanism 4 includes a valve body 401, an upper bonnet 402, a valve core component 408, and a spring 410, where the upper bonnet 402 is connected to the upper end of the valve body 401 through a stud 403, the valve core component 408 extends into the valve body 401 from the upper bonnet 402, the spring 410 is sleeved on a valve rod of the valve core component 408, the upper end of the spring 410 is abutted against the upper bonnet 402, the lower end of the spring 410 is abutted against the lower end head of the valve core component 408, and under the elastic force of the spring 410, the valve core component 408 closes a medium passage in the valve body 401.

The working principle of the utility model is as follows:

the pressure reducing valve 2 is used for stably controlling the pressure of a medium entering the actuating mechanism 1, the function of the pressure reducing valve 2 is realized by a pressure reducing valve spring 206, a pressure reducing valve diaphragm 208, a nozzle 205 and other components in the pressure reducing valve, when the pressure of the medium entering the pressure reducing valve 2 from an opening A is larger than a set value of acting force of the pressure reducing valve spring 206, the nozzle 205 moves leftwards, the flow area of the medium is reduced, the pressure of the medium entering the nozzle 205 is reduced, when the pressure of the medium entering the nozzle 205 is smaller than the set value of acting force of the pressure reducing valve spring 206, the nozzle 205 moves rightwards, the flow area of the medium is increased, and the pressure of the medium entering the nozzle 205 is increased. With this configuration, the pressure of the medium entering the actuator 1 can be stabilized within a certain range. The decompressed medium passes through the nozzle 205 and then is introduced into the rear film chamber 124 of the actuator 1 through the port B and is introduced into the front film chamber 123 of the actuator 1 through the port C.

The adjusting mechanism 4 is used for controlling the opening and closing of the valve, and the internal valve core part 408 of the adjusting mechanism is controlled by the shifting fork 113 of the executing mechanism 1, so that the opening and closing of the valve are controlled. The core component 408 may be of a single seat or sleeve type construction.

The actuator 1 is used for controlling the action of the valve core component 408 of the adjusting mechanism 4, when air in front of the adjusting mechanism 4 passes through the pressure reducing valve 2 and then enters the two sides of the actuator diaphragm 103 of the actuator 1 through the throttling nozzle I210 and the throttling nozzle II 219, the two sides of the actuator diaphragm 103 of the actuator 1 are in a force balance state. The adjustment mechanism 4 is in the closed state under the urging force of the spring 410 of the adjustment mechanism 4. When the pressure behind the actuator 4 decreases, the director spring ii 322 decreases in compression, pushing open the lever valve spool 304 via the linkage 306, and the pressure in the diaphragm chamber 124 behind the actuator 1 decreases by venting through the pressure relief valve nozzle 217. A pressure differential is created across the actuator diaphragm 103 to displace the lever 113 to open the valve core member 408.

The purpose of the commander 3 is to automatically adjust the amount of compression of the commander spring 322 according to the pressure change behind the adjusting mechanism 4 when the pressure behind the adjusting mechanism 4 changes. Therefore, the opening degree of the adjusting mechanism 4 is changed, the pressure behind the valve is recovered, and the pressure behind the adjusting mechanism 4 is stably output all the time. The amount of pressure behind the adjustment mechanism 4 depends on the amount of thrust of the commander spring 322, so that the output pressure of the adjustment mechanism 4 can be easily adjusted by simply rotating the spring adjustment lever 326.

Claims

1. The micro-pressure self-operated regulating valve with the commander is characterized by comprising an actuating mechanism, a pressure reducing valve, the commander and an adjusting mechanism, wherein two outlets of the pressure reducing valve are respectively communicated with a rear membrane chamber and a front membrane chamber of the actuating mechanism, a lever valve core of the commander is in sealed butt joint with an outlet of a nozzle of the pressure reducing valve, an outlet of the pressure reducing valve communicated with the rear membrane chamber of the actuating mechanism is communicated with the nozzle of the pressure reducing valve, and the actuating mechanism is arranged on a lever of the rear membrane chamber and is connected with a valve core part of the adjusting mechanism.

2. The micro-pressure self-operated regulating valve with the pilot valve according to claim 1, wherein the actuator comprises an actuator diaphragm, a top plate, a regulating rod and a lever, one side of the actuator diaphragm is a front diaphragm chamber, the other side of the actuator diaphragm is a rear diaphragm chamber, the regulating rod and the lever are arranged in the rear diaphragm chamber, the actuator diaphragm is fixedly connected with the top plate and the regulating rod, the regulating rod is hinged with the lever, and the lever is provided with a hinge pivot.

3. The micro-pressure self-operated regulating valve with the commander as claimed in claim 1, wherein the pressure reducing valve comprises a valve seat, a nozzle, a pressure reducing valve top plate, a pressure reducing valve diaphragm pressing plate, a throttling nozzle I, a throttling nozzle II, a spring pressing cover, a pressure reducing valve spring, a nozzle spring and a pressure reducing valve nozzle, the valve seat, the pressure reducing valve top plate and the pressure reducing valve spring are arranged on one side of a medium inlet of the pressure reducing valve diaphragm, the pressure reducing valve spring tightly presses the pressure reducing valve diaphragm through the pressure reducing valve top plate, one end of an inlet of the nozzle is opposite to the end part of the valve seat, one end of an outlet of the nozzle penetrates through the pressure reducing valve top plate and the pressure reducing valve diaphragm, and an axial bulge is arranged on the nozzle and clamped on the pressure reducing valve top plate; the pressure reducing valve diaphragm pressing plate, the spring pressing cover and the pressure reducing valve nozzle are arranged on one side of a medium outlet of the pressure reducing valve diaphragm, two ends of the nozzle spring are respectively connected with the pressure reducing valve nozzle and the spring pressing cover in a propping manner, the pressure reducing valve diaphragm is tightly pressed by the nozzle, a pressure reducing valve top plate and the pressure reducing valve diaphragm pressing plate to form an integrated component, a medium flowing space is reserved between the spring pressing cover and the pressure reducing valve diaphragm pressing plate, an outlet of the nozzle is communicated with the medium flowing space, a throttling nozzle I and a throttling nozzle II are arranged on two sides of the pressure reducing valve nozzle, one end of the throttling nozzle I is communicated with the medium flowing space, the other end of the throttling nozzle I is communicated with an outlet C communicated with a front diaphragm chamber of an actuating mechanism, one end of the throttling nozzle II is communicated with the medium flowing space, the other end of the throttling nozzle II is communicated with an outlet B communicated with a rear diaphragm chamber of the actuating mechanism, and the other end of the throttling nozzle II is also communicated with a nozzle of a pressure reducing valve, and a medium inlet channel is arranged in the valve seat.

4. The micro-pressure self-operated regulating valve with the commander as claimed in claim 1, wherein the commander comprises a lever valve core, a connecting rod, a commander diaphragm, a commander top disc, a commander spring I, a commander spring II and a spring regulating rod, the lever valve core is provided with a hinged fulcrum, the valve core end of the lever valve core is connected with a pressure reducing valve nozzle outlet of a pressure reducing valve in a propping manner, the other end of the lever valve core is hinged with the connecting rod, the commander top disc supports the commander diaphragm, the connecting rod is connected with the commander top disc, the commander spring I is arranged between the connecting rod and the commander top disc, the commander spring II is connected with the other side of the commander diaphragm in a propping manner, and the spring regulating rod regulates the tightness degree of the commander spring II.

5. The micro-pressure self-operated regulating valve with the commander according to claim 1, wherein the regulating mechanism comprises a valve body, an upper valve cover, a valve core part and a spring, the upper valve cover is connected to the upper end of the valve body through a bolt, the valve core part extends into the valve body from the upper valve cover, the spring is sleeved on a valve rod of the valve core part, the upper end of the spring is abutted with the upper valve cover, the lower end of the spring is abutted with the lower end head part of the valve core part, and under the action of the spring force, the valve core part seals a medium channel in the valve body.