CN203963104U - A kind of pneumatic control valve - Google Patents
A kind of pneumatic control valve Download PDFInfo
- Publication number
- CN203963104U CN203963104U CN201420379256.3U CN201420379256U CN203963104U CN 203963104 U CN203963104 U CN 203963104U CN 201420379256 U CN201420379256 U CN 201420379256U CN 203963104 U CN203963104 U CN 203963104U
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- CN
- China
- Prior art keywords
- pneumatic
- liquid inlet
- inlet pipe
- drain pipe
- utility
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- 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 has been announced a kind of pneumatic control valve, comprises valve body and spool, it is characterized in that: on described valve body, be provided with Pneumatic actuator, and the metal tube that valve rod is hollow, the upper end of metal tube is connected with pressure-detecting device, and lower end is provided with pneumatic shuttle; In described valve body, be provided with liquid inlet pipe and drain pipe, pneumatic shuttle is arranged on the joint of liquid inlet pipe and drain pipe.The utility model arranges air bag in the joint of liquid inlet pipe and drain pipe, and air bag connects air generator by valve rod, realize to airbag boost air or decompression, ensure the flow of liquid in modulating valve, and the utility model can not use electric energy, avoid electric leakage dangerous.
Description
Technical field
The utility model belongs to modulating valve field, specifically, relates to a kind of pneumatic control valve.
Background technique
Along with scientific and technical progress, the modulating valve that is used in the production automation controlling fluid flow is generally for industry-by-industry.And for heating power, chemical industry control system, as the modulating valve of the every quality of final control procedure medium and safety index, play an important role at aspects such as steady production, optimization control, maintenance and cost of overhaul controls.
The modulating valve using at present, what generally adopt is electronic.Although current electric control valve has been made very large improvement in safety, the danger of its existence does not lack to be eliminated, such as electric leakage situation.And the good method that solves electric leakage is not use electronic modulating valve.
Model utility content
For solving the problem in background technique, the utility model provides a kind of reasonable in design, can not use electric energy, avoids the dangerous pneumatic control valve that leaks electricity.
The technical solution of the utility model is:
A kind of pneumatic control valve, comprises valve body and spool, it is characterized in that: on described valve body, be provided with Pneumatic actuator, and the metal tube that valve rod is hollow, the upper end of metal tube is connected with pressure-detecting device, and lower end is provided with pneumatic shuttle; In described valve body, be provided with liquid inlet pipe and drain pipe, pneumatic shuttle is arranged on the joint of liquid inlet pipe and drain pipe.
As a kind of technological scheme of optimization, described Pneumatic actuator comprises air generator, and air generator is communicated with valve rod by sebific duct.
As a kind of technological scheme of optimization, described pressure-detecting device is the pressure gauge that is arranged on valve rod upper end.
As a kind of technological scheme of optimization, described pneumatic shuttle is the air bag that is communicated with valve rod lower end, and air bag is arranged on the joint of liquid inlet pipe and drain pipe.
Owing to having adopted technique scheme, compared with prior art, the utility model arranges air bag in the joint of liquid inlet pipe and drain pipe, and air bag connects air generator by valve rod, realize to airbag boost air or decompression, ensure the flow of liquid in modulating valve, and the utility model can not use electric energy, avoid electric leakage dangerous.
Brief description of the drawings
Fig. 1 is a kind of embodiment's of the utility model structural representation.
Embodiment
Embodiment
As shown in Figure 1, a kind of pneumatic control valve, comprises valve body 2 and spool.On described valve body 2, be provided with Pneumatic actuator, the metal tube that valve rod 6 is hollow, the upper end of metal tube is connected with pressure-detecting device, and lower end is provided with pneumatic shuttle 7 as spool.In described valve body 2, be provided with liquid inlet pipe 1 and drain pipe 8, pneumatic shuttle 7 is arranged on the joint of liquid inlet pipe 1 and drain pipe 8.
In the present embodiment, described Pneumatic actuator comprises air generator 3, and air generator 3 is communicated with valve rod 6 by sebific duct 4.
Described pressure-detecting device is the pressure gauge 5 that is arranged on valve rod upper end.
Described pneumatic shuttle 7 is for being communicated with the air bag of valve rod lower end, and air bag is arranged on the joint of liquid inlet pipe and drain pipe.
The utility model arranges air bag in the joint of liquid inlet pipe and drain pipe, and air bag connects air generator by valve rod, realize to airbag boost air or decompression, ensure the flow of liquid in modulating valve, and the utility model can not use electric energy, avoid electric leakage dangerous.
The utility model is not limited to above-mentioned preferred implementation, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or akin technological scheme, all belong to protection domain of the present utility model.
Claims (4)
1. a pneumatic control valve, comprises valve body and spool, it is characterized in that: on described valve body, be provided with Pneumatic actuator, and the metal tube that valve rod is hollow, the upper end of metal tube is connected with pressure-detecting device, and lower end is provided with pneumatic shuttle; In described valve body, be provided with liquid inlet pipe and drain pipe, pneumatic shuttle is arranged on the joint of liquid inlet pipe and drain pipe.
2. pneumatic control valve according to claim 1, is characterized in that: described Pneumatic actuator comprises air generator, and air generator is communicated with valve rod by sebific duct.
3. pneumatic control valve according to claim 2, is characterized in that: described pressure-detecting device is the pressure gauge that is arranged on valve rod upper end.
4. pneumatic control valve according to claim 3, is characterized in that: described pneumatic shuttle is the air bag that is communicated with valve rod lower end, and air bag is arranged on the joint of liquid inlet pipe and drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379256.3U CN203963104U (en) | 2014-07-10 | 2014-07-10 | A kind of pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379256.3U CN203963104U (en) | 2014-07-10 | 2014-07-10 | A kind of pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963104U true CN203963104U (en) | 2014-11-26 |
Family
ID=51923686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420379256.3U Expired - Fee Related CN203963104U (en) | 2014-07-10 | 2014-07-10 | A kind of pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266553A (en) * | 2016-12-30 | 2018-07-10 | 福州品行科技发展有限公司 | A kind of pressure maintaining valve with electrolysis unit |
-
2014
- 2014-07-10 CN CN201420379256.3U patent/CN203963104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266553A (en) * | 2016-12-30 | 2018-07-10 | 福州品行科技发展有限公司 | A kind of pressure maintaining valve with electrolysis unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |