CN214699370U - Pressure reducing valve for micro-pressure self-operated regulating valve - Google Patents
Pressure reducing valve for micro-pressure self-operated regulating valve Download PDFInfo
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- CN214699370U CN214699370U CN202120544355.2U CN202120544355U CN214699370U CN 214699370 U CN214699370 U CN 214699370U CN 202120544355 U CN202120544355 U CN 202120544355U CN 214699370 U CN214699370 U CN 214699370U
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Abstract
A pressure reducing valve for a micro-pressure self-operated regulating 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 utility model relates to a minute-pressure is relief pressure valve for formula of relying on oneself governing valve for in the formula of relying on oneself governing valve, be responsible for the scope that medium pressure stabilized to formula of relying on oneself governing valve needs before the valve to control formula of relying on oneself governing valve actuating mechanism part, the utility model discloses can be with the scope (if by 0.8Mpa before the valve stabilize to 0.001MPa) of medium pressure stabilized to needs before the valve.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a minute-pressure is relief pressure valve for formula of relying on oneself governing valve.
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 design requirements, a pressure reducing valve for micro-pressure self-operated regulation is developed, and the pressure reducing valve part is responsible for stabilizing the pressure of medium before the valve to the range required by the self-operated regulating valve and controlling an actuating mechanism part of the self-operated regulating valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a minute-pressure is relief pressure valve for formula of relying on oneself governing valve for in the formula of relying on oneself governing valve, be responsible for the scope that medium pressure stabilized to formula of relying on oneself governing valve needs before the valve, and control self-operated governing valve actuating mechanism part, the utility model discloses can be with the scope (if by 0.8Mpa before the valve stabilize to 0.001MPa) of medium pressure stabilized to needs before the valve.
In order to achieve the above object, the utility model adopts the following technical scheme:
a pressure reducing valve for micro-pressure self-operated regulation 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.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a relief pressure valve for micropressure self-operated regulator valve for in the self-operated regulator valve, be responsible for stablize the scope that self-operated regulator valve needs with medium pressure before the valve to control self-operated regulator valve actuating mechanism part, the utility model discloses can stabilize the scope to needs with medium pressure before the valve (if by before the valve 0.8Mpa stabilize to 0.001 MPa).
Drawings
Fig. 1 is a schematic structural view of a pressure reducing valve for a micro-pressure self-operated regulating valve of the present invention;
in fig. 1: 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. 2 is an installation diagram of a pressure reducing valve for micro-pressure self-operated adjustment in a self-operated adjusting valve;
in fig. 2: 1. the device comprises an actuating mechanism, 2 pressure reducing valves, 3 commanders, 4 adjusting mechanisms, 5 filters, 6 front membrane chambers and 7 rear membrane chambers.
FIG. 3 is a schematic diagram of a pilot of the self-operated regulator;
in fig. 3: 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.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings:
referring to fig. 1 and 2, the pressure reducing valve for the micro-pressure self-operated regulating valve comprises a valve seat 201, a nozzle 205, a pressure reducing valve top disc 207, a pressure reducing valve diaphragm 208, a pressure reducing valve diaphragm pressing plate 209, a throttling nozzle I210, a throttling nozzle II 219, a spring pressing cover 212, a pressure reducing valve spring 206, a nozzle spring 213 and a pressure reducing valve nozzle 217, wherein the valve seat 201, the pressure reducing valve top disc 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 disc 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 disc 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 disc 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 6 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 7 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. 2 and 3, the commander 3 comprises a lever valve core 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, wherein the lever valve core 304 is provided with a hinged fulcrum, the valve core end of the lever valve core 304 is abutted with an outlet of a pressure reducing valve nozzle 217 of the pressure reducing valve 2, the other end of the lever valve core 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 is abutted on 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.
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 7 of the actuator 1 through the port B and is introduced into the front film chamber 6 of the actuator 1 through the port C.
When the gas in front of the adjusting mechanism 4 passes through the pressure reducing valve 2 and then enters the rear diaphragm chamber 7 and the front diaphragm chamber 6 on two sides of the actuating mechanism diaphragm 103 of the actuating mechanism 1 through the throttling nozzle I210 and the throttling nozzle II 219, two sides of the actuating mechanism diaphragm of the actuating mechanism 1 are in a force balance state. When the spring adjusting rod 326 of the pilot device 3 is rotated to compress the pilot spring II 322 to push the lever valve core 304 open, the pressure of the rear film chamber 7 of the actuator 1 is discharged through the pressure reducing valve nozzle 217 and is reduced. A pressure difference is generated across the actuator diaphragm to displace the lever to open the spool part of the adjustment mechanism 4.
Claims (1)
1. A pressure reducing valve for a micro-pressure self-operated regulating valve is characterized by comprising 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120544355.2U CN214699370U (en) | 2021-03-16 | 2021-03-16 | Pressure reducing valve for micro-pressure self-operated regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120544355.2U CN214699370U (en) | 2021-03-16 | 2021-03-16 | Pressure reducing valve for micro-pressure self-operated regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214699370U true CN214699370U (en) | 2021-11-12 |
Family
ID=78571507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120544355.2U Active CN214699370U (en) | 2021-03-16 | 2021-03-16 | Pressure reducing valve for micro-pressure self-operated regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214699370U (en) |
-
2021
- 2021-03-16 CN CN202120544355.2U patent/CN214699370U/en active Active
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