CN2267473Y - Pneumatic differential pressure/pressure control device - Google Patents
Pneumatic differential pressure/pressure control device Download PDFInfo
- Publication number
- CN2267473Y CN2267473Y CN 96233567 CN96233567U CN2267473Y CN 2267473 Y CN2267473 Y CN 2267473Y CN 96233567 CN96233567 CN 96233567 CN 96233567 U CN96233567 U CN 96233567U CN 2267473 Y CN2267473 Y CN 2267473Y
- Authority
- CN
- China
- Prior art keywords
- pneumatic
- pressure
- differential pressure
- air
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a pneumatic differential pressure (pressure) controller, which is composed of a measuring mechanism and a pneumatic changeover mechanism. The utility model is the pneumatic controller used for controlling the liquid level of fluid, the differential pressure, the pressure, and the specific weight. In the prior art, a nozzle and a baffle plate are used for realizing the output of air signal; because the bore of the nozzle is very small, the bore is easy to block by dirty air, and the phenomenon of the malfunction of the meter can occur. In the technology, the nozzle is replaced by a signal device, and the baffle plate can realize the output of the air signal; thus, the special requirement for an air source is not needed, the phenomenon of the air block can not occur. When the pneumatic differential pressure (pressure) controller is in operation, pneumatic signal is output only at the time of the need of control, and the instant indication can be realized; because the parts are simplified, so the structure is compact, the adjustment is simple, and the operation is reliable.
Description
The utility model is the pneumatic controller technical field that is used to control industrial process fluid liquid level, differential pressure, pressure, proportion.
In the prior art, be used for measuring and controlling liquid level, differential pressure, the pressure of industrial process fluid, the pneumatic transmitter of proportion, parts such as nozzle, plate washer, amplifier, feedback bellow, zeroing spring are all adopted in its pneumatic throw-over gear basically, because its parts are many, complex structure, adjustment is difficult for, particularly because nozzle bore is very little, and be in all the time at work and open output pneumatic signal under the dress attitude, therefore, not only waste energy, and nozzle also can be because of as the impure easily blocked instrument malfunction that is directed at of the air filtration of source of the gas.
The purpose of this utility model is to utilize pneumatic principle, and designing does not a kind ofly have specific (special) requirements to source of the gas, and it is stifled not produce gas, the pneumatic control instrument that can indicate on the spot, and also the design's controller is just just exported pneumatic signal at work when needs are controlled.
The purpose of this utility model is achieved in that the utility model partly is made up of the gentle manual converting mechanism of measuring mechanism two, and wherein pneumatic throw-over gear is made of signalling device, push rod, auxiliary lever, deformity reed, bolster, shift fork and mechanical display; Measuring mechanism is made of bellows, C type reed, main lever and shaft diaphragm; When tested differential pressure/pressure acts on the bellows, under the traction of C type reed, main lever lays out the axilemma sheet and rotates, because the draw of deformity reed, auxiliary lever is rotated around bolster, drive push rod and move, make the pneumatic signal of signalling device commutation output, simultaneously, under the effect of shift fork, realize the indication on the spot of mechanical display.
The utility model has the advantages that: because the nozzle, the baffle plate that have adopted signalling device to replace prior art are realized the output of gas signal, therefore source of the gas there is not specific (special) requirements, it is stifled can not produce gas, and can realize that instrument just just exports pneumatic signal and indicating on the spot at work when needs are controlled, owing to simplified meter unit, thereby compact conformation, easy, the reliable operation of adjustment.
Fig. 1 is a front elevation of the present utility model.
Fig. 2 is a side view of the present utility model.
Provide embodiment of the present utility model below: the utility model partly is made up of the gentle manual converting mechanism two of measuring mechanism, wherein pneumatic throw-over gear is by signalling device (5), push rod (6), auxiliary lever (7), deformity reed (9), bolster (8), shift fork (10) and mechanical display (11) constitute, wherein: signalling device (5) is by two diaphragms (5-1), or employing single-iris, valve rod (5-2) and valve body (5-3) constitute, two diaphragms (5-1) play commutation and sealing, valve rod (5-2) plays the effect of supporting diaphragm and moving, in valve body (5-3), there are two valve ports and passage air supply source to enter and export pneumatic signal, push rod (6) head have regulate and locking mechanism (6-1) so that the instrument adjustment, push rod (6) also can be with and regulate and locking mechanism, in order to provide instrument range to regulate and to realize that auxiliary lever (7) freely rotates around back shaft (8), the inner of back shaft (8) is provided with locking and turning joint mechanism (8-1), also can not be with this locking and turning joint mechanism; Measuring mechanism is made of bellows (1), C type reed (2), main lever (3) and shaft diaphragm (4), and bellows (1) is by two diaphragms, single-iris, and corrugated tube or bourdon tube constitute; When tested differential pressure/pressure acts on the bellows (1), under the traction of C type reed (2), main lever (3) lays out axilemma sheet (4) and rotates, because the draw of deformity reed (9), auxiliary lever (7) is rotated around bolster (8), and it is mobile to drive push rod (6), makes the pneumatic signal of signalling device (5) commutation output, simultaneously, under the effect of shift fork (10), make mechanical display (11) realize the linearity indication of differential pressure/pressure; Otherwise, when differential pressure/the pressure of bellows (1) institute sensing diminished, its main lever (3) laid out axilemma sheet (4) backward rotation, made also backward rotation of auxiliary lever (7), push rod (6) makes signalling device (5) commutation to the virgin state of not having pneumatic signal output under the effect of back-moving spring.
Claims (4)
1. an air pressure drop/pressure controller partly is made up of the gentle manual converting mechanism two of measuring mechanism, and wherein pneumatic throw-over gear comprises signalling device (5), push rod (6), bolster (8), shift fork (10) and mechanical display (11), it is characterized in that:
A. described signalling device (5) is made of two diaphragms, valve rod and valve body,
B. push rod (6) has an adjusting and a locking mechanism,
C. bolster (8) has a locking and a turning joint mechanism.
2. a kind of air pressure drop/pressure controller according to claim 1, the two diaphragms that it is characterized in that described signalling device (5) also can be single-iris.
3. a kind of air pressure drop/pressure controller according to claim 1 is characterized in that described bolster (8) also can fixed and turning joint mechanism not with lock.
4. a kind of air pressure drop/pressure controller according to claim 1 is characterized in that described push rod (6) also can be with to regulate and locking mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96233567 CN2267473Y (en) | 1996-08-15 | 1996-08-15 | Pneumatic differential pressure/pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96233567 CN2267473Y (en) | 1996-08-15 | 1996-08-15 | Pneumatic differential pressure/pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2267473Y true CN2267473Y (en) | 1997-11-12 |
Family
ID=33910212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96233567 Expired - Fee Related CN2267473Y (en) | 1996-08-15 | 1996-08-15 | Pneumatic differential pressure/pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2267473Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051139A (en) * | 2017-11-08 | 2018-05-18 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of leverage for realizing division function |
-
1996
- 1996-08-15 CN CN 96233567 patent/CN2267473Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051139A (en) * | 2017-11-08 | 2018-05-18 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of leverage for realizing division function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |