CN218719063U - Built-in lever type micro-pressure regulating valve - Google Patents
Built-in lever type micro-pressure regulating valve Download PDFInfo
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- CN218719063U CN218719063U CN202222270048.7U CN202222270048U CN218719063U CN 218719063 U CN218719063 U CN 218719063U CN 202222270048 U CN202222270048 U CN 202222270048U CN 218719063 U CN218719063 U CN 218719063U
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Abstract
The utility model discloses a built-in lever type micro-pressure regulating valve, which comprises a valve body mechanism, wherein an actuating mechanism is arranged on the valve body mechanism in a matching way, the valve body mechanism comprises a valve body provided with a medium flow passage, a valve is arranged on the medium flow passage, a valve seat is arranged on the valve, the valve seat is provided with a valve core used for plugging the lower end surface of the valve seat in a matching way, and a valve rod is arranged on the valve core; the valve body top can be dismantled and connect the valve gap, is equipped with the valve gap runner that link up valve body and actuating mechanism on the valve gap, and sets up the lever subassembly between valve gap and the actuating mechanism is worn out to the valve rod. The utility model discloses a set up the valve gap runner that link up valve body and actuating mechanism on the valve gap and set up the lever in actuating mechanism, adopt the lever to be connected between push rod and the valve rod promptly, enlarge actuating mechanism and produce thrust, reduce actuating mechanism pressure check point, promote the action of actuating mechanism diaphragm to drive valve rod and case and open the valve according to required aperture, thereby realized that the formula of relying on oneself micropressure regulating valve control pressure-fired is released.
Description
Technical Field
The utility model belongs to the technical field of the governing valve, concretely relates to built-in lever minute-pressure governing valve.
Background
The self-operated micro-pressure regulating valve does not need an external energy source (an external power source or an air source), utilizes the self energy of a regulated medium as a power source, and introduces the energy into the lower membrane chamber of the actuating mechanism through the valve body, thereby controlling the position of the valve core and the valve rod, changing the pressure difference and the flow at two ends and stabilizing the pressure before the valve. The automatic pressure relief and pressure stabilization control device has the advantages of sensitive action, good sealing performance, small pressure set point fluctuation and the like, and can be widely applied to automatic pressure relief and pressure stabilization control of nitrogen sealing devices in various industrial equipment.
However, the internal structure of the traditional self-operated micro-pressure regulating valve in China is heavy and is influenced by the self weight of a valve core and a valve rod and the friction force of a sealing ring, the self-operated micro-pressure regulating valve with the conventional structure cannot stabilize the requirement of the pressure micro-positive pressure (as low as 0.5 KPa) discharge of the tank top of the nitrogen sealing device, the full opening speed of the valve is slow along with the pressure rise and the requirement of the discharge amount under the specified pressure cannot be met, and therefore the normal operation of the industrial production process is influenced.
The built-in lever type micro-pressure regulating valve has the advantages that the built-in lever of the actuating mechanism is used, the sensitivity of the actuating mechanism is increased, and the micro-pressure regulating performance is greatly improved.
SUMMERY OF THE UTILITY MODEL
In order to make up the defects of the prior art, the utility model provides a built-in lever type micro-pressure regulating valve, which comprises a valve body mechanism, wherein an actuating mechanism is arranged on the valve body mechanism in a matching way, the valve body mechanism comprises a valve body provided with a medium flow passage, a valve is arranged on the medium flow passage, a valve seat is arranged on the valve, a valve core used for plugging the lower end surface of the valve seat is arranged in a matching way on the valve seat, and a valve rod is arranged on the valve core; the top of the valve body is detachably connected with the valve cover, a valve cover flow passage which penetrates through the valve body and the actuating mechanism is arranged on the valve cover, and a lever assembly is arranged between one end, penetrating out of the valve cover, of the valve rod and the actuating mechanism.
Further, an adjusting mechanism is connected above the actuating mechanism.
Further, actuating mechanism includes the lower membrane lid that communicates with the valve gap and the last membrane lid that communicates with adjustment mechanism, sets up the diaphragm between last membrane lid and the lower membrane lid, installs the elasticity fixed plate on the diaphragm, sets up the push rod on the elasticity fixed plate.
Furthermore, a spring is arranged on the elastic fixing plate and is arranged between the elastic fixing plate and the adjusting mechanism.
Further, the lever assembly is arranged between the valve rod and the push rod and comprises a lever, one end of the lever is hinged to the valve rod, the other end of the lever is hinged to the push rod, the lever is fixed to a supporting rod arranged at the top of the valve cover, and the supporting rod is located between the valve rod and the push rod and close to one end of the valve rod.
Further, adjustment mechanism includes the regulation cover with last membrane lid intercommunication, adjusts and covers the fixed regulation lid of cooperation, sets up in the regulation cover and can follow the gliding clamp plate of regulation cover inner wall, clamp plate below tip and spring coupling, and the clamp plate top sets up the regulation pole, adjusts the outer wall cover that the pole extends the regulation lid and establishes elastic component and top and set up adjusting nut.
Compared with the prior art, the utility model discloses there is following advantage: a valve cover flow passage which penetrates through the valve body and the actuating mechanism is arranged on the valve cover, and a medium enters a lower membrane chamber of the actuating mechanism through the valve cover flow passage to provide thrust for pushing the membrane; the lever is arranged in the actuating mechanism, namely the push rod is connected with the valve rod through the lever, the actuating mechanism is amplified to generate thrust, the pressure detection point of the actuating mechanism is reduced, the diaphragm of the actuating mechanism is pushed to act, and the valve rod and the valve core are driven to open the valve according to the required opening degree, so that the self-operated micro-pressure regulating valve is used for controlling micro-positive pressure release, and the domestic vacancy is filled.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the point a of fig. 1 according to the present invention.
In the figure: 1-valve body, 11-inlet flow passage, 12-outlet flow passage, 2-valve seat, 3-valve core, 4-valve rod, 5-valve cover, 51-valve cover flow passage, 52-sealing ring, 6-actuating mechanism, 61-upper membrane cover, 62-lower membrane cover, 63-membrane, 64-push rod, 65-elastic fixing plate, 7-lever component, 71-lever, 72-strut, 8-adjusting mechanism, 81-adjusting cover, 82-pressing plate, 83-adjusting cover and 84-adjusting rod.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The built-in lever type micro-pressure regulating valve shown in fig. 1 comprises a valve body mechanism, wherein an actuating mechanism 6 is arranged on the valve body mechanism in a matching mode, and an adjusting mechanism 8 is connected above the actuating mechanism 6. The valve body mechanism comprises a valve body 1, the top of the valve body 1 is detachably connected with a valve cover 5, an S-shaped medium flow passage is arranged on the valve body 1 and comprises an inlet flow passage 11 and an outlet flow passage 12, a valve is arranged between the inlet flow passage 11 and the outlet flow passage 12, a valve seat 2 is arranged at the position of the valve, and a valve core 3 is arranged on the valve seat 2 in a matched mode and used for plugging the lower end face of the valve seat 2. The valve core 3 is fixedly connected with a valve rod 4, and the valve rod 4 penetrates out of the valve cover 5 to be connected with an actuating mechanism 6. The actuating mechanism 6 comprises a lower membrane cover 62 communicated with the valve cover 5 and an upper membrane cover 61 communicated with the adjusting mechanism 8, a membrane 63 is arranged between the upper membrane cover 61 and the lower membrane cover 62, an elastic fixing plate 65 is installed on the membrane 63, a spring 9 is installed on the elastic fixing plate 65, and the spring 9 is arranged between the elastic fixing plate 65 and the adjusting mechanism 8. The elastic fixing plate 65 is provided with a push rod 64. Specifically, the bonnet 5 is provided with a bonnet flow passage 51 penetrating the valve body 1 and the lower diaphragm cover 62. A lever assembly 7 is arranged between the valve rod 4 and the push rod 64, the lever assembly 7 comprises a lever 71, one end of the lever 71 is hinged with the valve rod 4, and the other end of the lever 71 is hinged with the push rod 64; the lever 71 is fixed to a rod 72 provided on the valve cover 5, and the rod 72 is provided between the valve stem 4 and the push rod 64 near one end of the valve stem 4.
It can be understood that, when a medium in the valve body 1 enters the lower membrane chamber of the actuating mechanism 6 through the valve cover flow passage 51, a thrust is generated to push the membrane 63, the push rod 64 is driven to move upwards against the thrust of the spring 9, so as to drive the lever assembly 7 to move, the valve rod 4 connected with the lever 71 acts downwards to drive the valve core 3 to leave the valve seat, the valve is opened, the medium is discharged backwards, when the pressure discharge at the valve is reduced, the thrust generated by the membrane 63 is reduced, the spring 9 drives the push rod 64 to move downwards, the valve rod 4 is driven to move upwards through the lever assembly 7, the valve core 3 blocks the valve seat 2, and the valve is closed.
For the sealing of the valve body mechanism, a seal is provided between the valve stem 4 and the bonnet 5, and the seal is sealed by a seal ring 52.
The adjusting mechanism 8 comprises an adjusting cover 81 communicated with the upper film cover 61, the adjusting cover 81 is matched with a fixed adjusting cover 83, a pressing plate 82 capable of sliding along the inner wall of the adjusting cover 81 is arranged in the adjusting cover 81, the end part below the pressing plate 82 is connected with the spring 9, an adjusting rod 84 is arranged above the pressing plate 82, and the adjusting rod 84 extends out of the outer wall of the adjusting cover 83 to be sleeved with an elastic part and is provided with an adjusting nut at the top. It will be appreciated that the pressure of the spring 9 can be adjusted by adjusting the position of the adjustment rod 84 by means of an adjustment nut.
This application is through the built-in lever subassembly 7 of actuating mechanism 6, adopts the lever connection of certain proportion between push rod 64 and the valve rod 4 promptly, and the thrust that the amplification actuating mechanism 6 produced reduces actuating mechanism 6 pressure detection point, promotes actuating mechanism diaphragm 63 action and drives valve rod 4 and case 3 and open the valve according to required aperture to realized that self-operated micropressure regulating valve control extreme low pressure is released, filled the blank of domestic conventional self-operated micropressure regulating valve control micropressure.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (6)
1. A built-in lever type micro-pressure regulating valve comprises a valve body mechanism, wherein an executing mechanism (6) is arranged on the valve body mechanism in a matched mode, and the built-in lever type micro-pressure regulating valve is characterized in that the valve body mechanism comprises a valve body (1) provided with a medium flow channel, a valve is arranged on the medium flow channel, a valve seat (2) is arranged on the valve, a valve core (3) used for plugging the lower end face of the valve seat (2) is arranged on the valve seat (2) in a matched mode, and a valve rod (4) is arranged on the valve core (3); the top of the valve body (1) is detachably connected with the valve cover (5), a valve cover flow channel (51) penetrating through the valve body (1) and the actuating mechanism (6) is arranged on the valve cover (5), and a lever assembly (7) is arranged between one end, penetrating out of the valve cover (5), of the valve rod (4) and the actuating mechanism (6).
2. A built-in lever type micro-pressure regulating valve according to claim 1, wherein the actuator (6) is provided with a regulating mechanism (8).
3. A built-in lever type micro-pressure regulating valve according to claim 2, wherein the actuator (6) comprises a lower diaphragm cover (62) communicated with the valve cover (5) and an upper diaphragm cover (61) communicated with the regulating mechanism (8), a diaphragm (63) is arranged between the upper diaphragm cover (61) and the lower diaphragm cover (62), an elastic fixing plate (65) is installed on the diaphragm (63), and a push rod (64) is arranged on the elastic fixing plate (65).
4. A built-in lever type micro-pressure regulating valve as claimed in claim 3, wherein said elastic fixing plate (65) is provided with a spring (9), and the spring (9) is disposed between the elastic fixing plate (65) and the regulating mechanism (8).
5. A built-in lever type micro-pressure regulating valve as claimed in claim 3, wherein the lever assembly (7) is arranged between the valve rod (4) and the push rod (64), and comprises a lever (71), one end of the lever (71) is hinged with the valve rod (4), the other end of the lever is hinged with the push rod (64), the lever (71) is fixed with a support rod (72) arranged at the top of the valve cover (5), and the support rod (72) is arranged between the valve rod (4) and the push rod (64) and is close to one end of the valve rod (4).
6. A built-in lever type micro-pressure regulating valve as claimed in claim 3, wherein the regulating mechanism (8) comprises a regulating cover (81) communicated with the upper membrane cover (61), the regulating cover (81) is fixedly matched with the regulating cover (83), a pressing plate (82) capable of sliding along the inner wall of the regulating cover (81) is arranged in the regulating cover (81), the lower end of the pressing plate (82) is connected with the spring (9), a regulating rod (84) is arranged above the pressing plate (82), the regulating rod (84) extends out of the outer wall of the regulating cover (83) and is sleeved with an elastic member, and the top of the regulating rod is provided with a regulating nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222270048.7U CN218719063U (en) | 2022-08-29 | 2022-08-29 | Built-in lever type micro-pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222270048.7U CN218719063U (en) | 2022-08-29 | 2022-08-29 | Built-in lever type micro-pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218719063U true CN218719063U (en) | 2023-03-24 |
Family
ID=85631459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222270048.7U Active CN218719063U (en) | 2022-08-29 | 2022-08-29 | Built-in lever type micro-pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218719063U (en) |
-
2022
- 2022-08-29 CN CN202222270048.7U patent/CN218719063U/en active Active
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