CN211061906U - Micro-differential pressure controller - Google Patents
Micro-differential pressure controller Download PDFInfo
- Publication number
- CN211061906U CN211061906U CN201921972880.3U CN201921972880U CN211061906U CN 211061906 U CN211061906 U CN 211061906U CN 201921972880 U CN201921972880 U CN 201921972880U CN 211061906 U CN211061906 U CN 211061906U
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- diaphragm
- elastic device
- air inlet
- differential pressure
- shell
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Abstract
The utility model belongs to the technical field of differential pressure controller and specifically relates to little differential pressure controller. The differential pressure controller comprises a shell, a high-pressure air inlet, a low-pressure air inlet, a diaphragm, a transmission rod, a first elastic device, a second elastic device, an elastic device adjusting mechanism and a micro switch, wherein the diaphragm is fixed in the shell, the inner cavity of the shell is divided into an upper cavity and a lower cavity by the diaphragm, the upper cavity is provided with the high-pressure air inlet, the lower cavity is provided with the low-pressure air inlet, the transmission rod is slidably matched in the upper cavity of the shell, the micro switch is installed on the shell, the transmission rod is located between the micro switch and the diaphragm, the first elastic device is connected between the upper cavity of the shell and the diaphragm, and the elastic device adjusting. The utility model discloses a level and smooth of diaphragm is kept with resilient means two to resilient means one. The deformation of the diaphragm is formed by the difference of the pressures of the upper chamber and the lower chamber, so that the driving rod is pushed to move up and down, and the microswitch is triggered. The application improves the control precision.
Description
Technical Field
The utility model belongs to the technical field of differential pressure controller and specifically relates to little differential pressure controller.
Background
The existing differential pressure controller generally comprises a shell, a high-pressure sensor and a low-pressure sensor, wherein one end of the high-pressure sensor and one end of the low-pressure sensor are arranged inside a sensor shell, and the other end of the high-pressure sensor and the other end of the low-pressure sensor are arranged outside the sensor shell; the upper ends of the high-pressure sensor and the low-pressure sensor respectively comprise a pressure deformation device; one end of the differential pressure transmission lever is arranged at the upper end of the pressure deformation device in the high-pressure sensor, the other end of the differential pressure transmission lever is arranged at the upper end of the pressure deformation device in the low-pressure sensor, and the middle of the differential pressure transmission lever is pivoted on the sensor shell. The ejector rod is arranged on one side of the sensor shell relative to the high-pressure sensor, and one end of the ejector rod is connected with one end, located on the high-pressure sensor, of the differential pressure transmission lever. The shell structure is mostly the lever, and the sensor structure is bellows type. These two structures, although simple and mature, are not precise and are not suitable for low pressure operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems described in the background art, the present invention provides a micro differential pressure controller. The diaphragm is kept flat when air is not supplied through the first elastic device and the second elastic device. The deformation of the diaphragm is formed by the difference of the pressures of the upper chamber and the lower chamber, so that the driving rod is pushed to move up and down, and the microswitch is triggered. The application improves the control precision.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a little differential pressure controller, includes casing, high-pressure air inlet, low pressure air inlet, diaphragm, transfer line, resilient means one, resilient means two, resilient means adjustment mechanism and micro-gap switch, the casing internal fixation has the diaphragm, and two upper and lower cavities are separated into with the casing inner chamber to the diaphragm, and the upper chamber is equipped with high-pressure air inlet, and the lower cavity is equipped with the low pressure air inlet, and the transfer line sliding fit installs micro-gap switch on the casing in the upper chamber of casing, and the transfer line is located between micro-gap switch and the diaphragm, is connected with resilient means one between the upper chamber of casing and the diaphragm, installs resilient means adjustment mechanism in the lower cavity of casing, is connected with resilient means two between resilient means adjustment mechanism and the diaphragm.
Specifically, the membrane sheet has a diameter of 200mm and a thickness of 0.18 mm.
Specifically, the elastic device adjusting mechanism is composed of an adjusting screw and a spring seat, a rod body of the adjusting screw is rotatably connected to the lower cavity of the casing, the rod body of the adjusting screw is in threaded connection with a threaded hole of the spring seat, the spring seat is in sliding fit connection with the lower cavity of the casing, and a second elastic device is connected between the spring seat and the diaphragm.
Specifically, the first elastic device and the second elastic device are both compression springs.
In particular, the transmission rod is an I-shaped rod.
The utility model has the advantages that: the utility model provides a little differential pressure controller. The diaphragm is kept flat when air is not supplied through the first elastic device and the second elastic device. The deformation of the diaphragm is formed by the difference of the pressures of the upper chamber and the lower chamber, so that the driving rod is pushed to move up and down, and the microswitch is triggered. The application improves the control precision.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
in the figure, 1, a machine shell, 2, a high-pressure air inlet, 3, a low-pressure air inlet, 4, a diaphragm, 5, a transmission rod, 6, a first elastic device, 7, a second elastic device, 8, an elastic device adjusting mechanism, 9, a microswitch, 81, an adjusting screw rod and 82, a spring seat are arranged.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Fig. 1 is a schematic structural diagram of the present invention.
The utility model provides a little differential pressure controller, includes casing 1, high pressure air inlet 2, low pressure air inlet 3, diaphragm 4, transfer line 5, elastic device 6, elastic device two 7, elastic device adjustment mechanism 8 and micro-gap switch 9, casing 1 internal fixation has diaphragm 4, and two upper and lower cavities are separated into with casing 1 inner chamber to diaphragm 4, and the upper cavity is equipped with high pressure air inlet 2, and the lower cavity is equipped with low pressure air inlet 3, and transfer line 5 sliding fit is in the upper cavity of casing 1, installs micro-gap switch 9 on the casing 1, and transfer line 5 is located between micro-gap switch 9 and the diaphragm 4, is connected with elastic device one 6 between the upper cavity of casing 1 and the diaphragm 4, installs elastic device adjustment mechanism 8 in the lower cavity of casing 1, is connected with elastic device two 7 between elastic device adjustment mechanism 8 and the diaphragm 4. The membrane disc 4 has a diameter of 200mm and a thickness of 0.18 mm. The elastic device adjusting mechanism 8 is composed of an adjusting screw 81 and a spring seat 82, a rod body of the adjusting screw 81 is rotatably connected to the lower cavity of the machine shell 1, a rod body of the adjusting screw 81 is in threaded connection with a threaded hole of the spring seat 82, the spring seat 82 is in sliding fit connection with the lower cavity of the machine shell 1, and an elastic device II 7 is connected between the spring seat 82 and the diaphragm 4. The first elastic device 6 and the second elastic device 7 are compression springs. The transmission rod 5 is an I-shaped rod.
As shown in figure 1, when the controller is in a non-working state, the first elastic device 6 applies downward pressure to the diaphragm 4, the second elastic device 7 applies upward pressure to the diaphragm 4, and the pressures on the upper side and the lower side are balanced, so that the diaphragm 4 is in a flat state. And the upper end and the lower end of the I-shaped transmission rod 5 are respectively attached to the microswitch and the diaphragm. When the pressure of the second elastic device 7 on the upper diaphragm 4 needs to be adjusted, the second elastic device 7 between the spring seat 82 and the diaphragm 4 can be squeezed or released by only rotating the adjusting screw 81 to drive the spring seat 82 in threaded connection with the adjusting screw to move up and down.
When air enters the upper cavity and the lower cavity respectively through the high-pressure air inlet 2 and the low-pressure air inlet 3 to form pressure difference, the diaphragm 4 deforms, the transmission rod 5 moves downwards and is separated from the microswitch 9, and the microswitch transmits a signal to the controller so as to realize induction control. The diaphragm has a diameter of 200mm and a thickness of 0.18mm, so that ultra-low pressure differential sensing can be realized.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A micro differential pressure controller is characterized by comprising a machine shell (1), a high-pressure air inlet (2), a low-pressure air inlet (3), a diaphragm (4), a transmission rod (5), an elastic device I (6), an elastic device II (7), an elastic device adjusting mechanism (8) and a microswitch (9), wherein the diaphragm (4) is fixed in the machine shell (1), the inner cavity of the machine shell (1) is divided into an upper cavity and a lower cavity by the diaphragm (4), the upper cavity is provided with the high-pressure air inlet (2), the lower cavity is provided with the low-pressure air inlet (3), the transmission rod (5) is slidably arranged in the upper cavity of the machine shell (1), the microswitch (9) is arranged on the machine shell (1), the transmission rod (5) is positioned between the microswitch (9) and the diaphragm (4), the elastic device I (6) is connected between the upper cavity of the machine shell (1) and the diaphragm (4), the elastic device adjusting mechanism (8) is arranged in the lower cavity, an elastic device II (7) is connected between the elastic device adjusting mechanism (8) and the diaphragm (4).
2. The micro differential pressure controller according to claim 1, wherein: the diaphragm (4) has a diameter of 200mm and a thickness of 0.18 mm.
3. The micro differential pressure controller according to claim 1, wherein: elastic device adjustment mechanism (8) comprise adjusting screw (81) and spring holder (82), and the body of rod of adjusting screw (81) rotates to be connected in the lower cavity of casing (1), and the body of rod threaded connection of adjusting screw (81) is in the threaded hole of spring holder (82), and spring holder (82) sliding fit is connected in the lower cavity of casing (1), is connected with elastic device two (7) between spring holder (82) and diaphragm (4).
4. The micro differential pressure controller according to claim 1, wherein: the first elastic device (6) and the second elastic device (7) are both compression springs.
5. The micro differential pressure controller according to claim 1, wherein: the transmission rod (5) is an I-shaped rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921972880.3U CN211061906U (en) | 2019-11-14 | 2019-11-14 | Micro-differential pressure controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921972880.3U CN211061906U (en) | 2019-11-14 | 2019-11-14 | Micro-differential pressure controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211061906U true CN211061906U (en) | 2020-07-21 |
Family
ID=71583822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921972880.3U Expired - Fee Related CN211061906U (en) | 2019-11-14 | 2019-11-14 | Micro-differential pressure controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211061906U (en) |
-
2019
- 2019-11-14 CN CN201921972880.3U patent/CN211061906U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 Termination date: 20201114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |