CN2154938Y - Low pressure large flow safety overflow valve - Google Patents
Low pressure large flow safety overflow valve Download PDFInfo
- Publication number
- CN2154938Y CN2154938Y CN 93230331 CN93230331U CN2154938Y CN 2154938 Y CN2154938 Y CN 2154938Y CN 93230331 CN93230331 CN 93230331 CN 93230331 U CN93230331 U CN 93230331U CN 2154938 Y CN2154938 Y CN 2154938Y
- Authority
- CN
- China
- Prior art keywords
- valve
- safety overflow
- overflow valve
- valve body
- large flow
- 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 relates to a valve, particularly a low pressure large flow safety overflow valve used for the air supply system of a jig in a coal preparation plant, composed of a cylinder sleeve type valve body, a directly moving type valve core, a silencing cover, an adjustable weight matching block, a protecting cover, a position limiting switch, a pressure gauge, etc. The valve is suitable for the performance of low pressure large flow. The valve has the advantages of simple structure, flexible action, good pressure keeping performance, low cost and low noise. The valve is convenient for observing and regulating pressure and realizing automatic control and automatic control display.
Description
The utility model relates to valve, and a kind of gas overflow valve is especially for the lowpressure of air supply system of jig in coal dressing plant, the safety overflow valve of big flow.
At present, the air supply system of jig in coal dressing plant of prior art does not still have the safety overflow valve of this type, adopts many blowers air supply modes in parallel mostly, and the adjustment of blast size relies on the platform number of start-stop blower fully and realizes; Adopt separate unit blower air supply mode in addition, depended on pressure sensor control butterfly valve door is regulated pressure.The difficult control of former structure simple pressure, latter's complex structure cost height.
Purpose of design of the present utility model is to overcome deficiency of the prior art, and provides a kind of simple in structure, and it is reliable to be active in one's movements, and pressure maintaining performance is good, and noise is low, the big flow safety overflow valve of cheap lowpressure.
Purpose of design of the present utility model can reach by following measure:
This safety overflow valve has the valve body 1 of cylinder sleeve type, and there is inward flange the middle and lower part of valve body 1, in the valve body 1, lay the spool 2 of direct-acting type on the inward flange, has relief opening on the above tube wall of valve body 1 inward flange, and relief opening is equipped with silencer cover 3 outward.
Purpose of design of the present utility model can also reach by following measure:
The core hole is arranged at the top at the spool 2 of this safety overflow valve, lays balancing weight 6 in the core hole, and its number is adjustable.
Top layer, cylndrical surface sintering at the spool 2 of this safety overflow valve has the polytetrafluoroethylene lubricating layer.
The utility model compared with prior art has following advantage:
1. adopt straight moving cylinder sleeve type structure, be fit to the low pressure and mass flow performance, simple in structure, it is reliable to be active in one's movements, and pressure maintaining performance is good, and cost is low.
2. the relief opening design has silencer cover, can alleviate noise.
3. there are superpressure limit switch, rated pressure control switch to be convenient to realize control automatically and demonstration automatically.
4. the pressure gauge indication is arranged, be convenient to observe and adjust.
The explanation of accompanying drawing drawing:
Fig. 1: the utility model structural representation
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1: the structure that shows the big flow safety overflow valve of the utility model lowpressure.It mainly contains valve body 1, spool 2, silencer cover 3, balancing weight 6, protective housing 11 compositions.The valve body of cylinder sleeve type is two-part formation about in the of 1, the cylindrical shape of top for erectting, and the bottom is the right-angle elbow pipe form of band flange disc, the outside is welded with several piece gusset reinforcement by connection between the two.Joint at the two is the middle and lower part of valve body 1, because of lower diameter forms inward flange less than the top internal diameter, lay the spool 2 of direct-acting type on the inward flange of valve body 1, between valve body 1 inward flange and the spool 2 Sealing 12 is housed, have relief opening on the tube wall more than the inward flange of valve body 1.
At the top of spool 2 the core hole is arranged, lay balancing weight 6 in the core hole, the number of balancing weight 6 can be regulated as required.Balancing weight 6 centers have the screw thread of being convenient to load and unload.Sintering has the polytetrafluoroethylene lubricating layer on the top layer, cylndrical surface of spool 2.
End face at valve body 1 has cover plate 7 by screw, and superpressure limit switch 8, rated pressure control switch 9 are housed on the cover plate 7.The two is position limited inching switch, and the normal opened contact that utilizes 8 normal opened contact and 9 respectively is for control and demonstration provide transducing signal automatically.Be installed in the support 10 of spool 2 end faces, pass the hole on the cover plate 7, act on switch 8,9.
Claims (5)
1, the big flow safety overflow valve of a kind of lowpressure, it is characterized in that having the valve body (1) of cylinder sleeve type, there is inward flange the middle and lower part of valve body (1), in the valve body (1), lay the spool (2) of direct-acting type on the inward flange, have relief opening on the tube wall more than valve body (1) inward flange, relief opening is equipped with silencer cover (3) outward.
2, safety overflow valve according to claim 1 is characterized in that the core hole is arranged at the top of said spool (2), lays the adjustable balancing weight of number (6) in the core hole.
3, safety overflow valve according to claim 1 and 2, the top layer, cylndrical surface that it is characterized in that said spool (2) are sintering polytetrafluoroethylene lubricating layer.
4, safety overflow valve according to claim 1 is characterized in that being equipped with superpressure limit switch (8), rated pressure control switch (9).
5, safety overflow valve according to claim 1 is characterized in that being equipped with pressure gauge (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230331 CN2154938Y (en) | 1993-03-04 | 1993-03-04 | Low pressure large flow safety overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230331 CN2154938Y (en) | 1993-03-04 | 1993-03-04 | Low pressure large flow safety overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2154938Y true CN2154938Y (en) | 1994-02-02 |
Family
ID=33807009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93230331 Expired - Fee Related CN2154938Y (en) | 1993-03-04 | 1993-03-04 | Low pressure large flow safety overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2154938Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644344A (en) * | 2013-12-03 | 2014-03-19 | 中国地震局工程力学研究所 | Automatic permanent magnet earthquake gas closing valve |
| CN105546171A (en) * | 2016-01-29 | 2016-05-04 | 上海远安流体设备科技有限公司 | Breather valve on top of storage tank |
-
1993
- 1993-03-04 CN CN 93230331 patent/CN2154938Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644344A (en) * | 2013-12-03 | 2014-03-19 | 中国地震局工程力学研究所 | Automatic permanent magnet earthquake gas closing valve |
| CN103644344B (en) * | 2013-12-03 | 2016-04-13 | 中国地震局工程力学研究所 | Magneto automatic seism combustion gas throttle down |
| CN105546171A (en) * | 2016-01-29 | 2016-05-04 | 上海远安流体设备科技有限公司 | Breather valve on top of storage tank |
| CN105546171B (en) * | 2016-01-29 | 2019-05-07 | 上海远安流体设备科技有限公司 | A kind of basin tank deck breather valve |
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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 |