CN2157362Y - Automatic backwater controlling valve for micropressure and atmospheric hot-water boiler - Google Patents
Automatic backwater controlling valve for micropressure and atmospheric hot-water boiler Download PDFInfo
- Publication number
- CN2157362Y CN2157362Y CN 93200139 CN93200139U CN2157362Y CN 2157362 Y CN2157362 Y CN 2157362Y CN 93200139 CN93200139 CN 93200139 CN 93200139 U CN93200139 U CN 93200139U CN 2157362 Y CN2157362 Y CN 2157362Y
- Authority
- CN
- China
- Prior art keywords
- water
- pressure
- micropressure
- backwater
- pump
- 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 an automatic backwater controlling valve for micropressure and atmospheric hot-water boiler. The device makes use of pressure differences between the yielding water pressure of a circulating water pump of the micropressure and the atmospheric hot-water boiler and the backwater pressure of a heating system; when the micropressure and atmospheric pressure boiler starts to operate, a return line is automatically opened; when power is off and the pump is stopped, the return line is automatically closed. When power is off, the micropressure and the atmospheric hot-water boiler is deactivated, and the pump is stopped, phenomena that the heating system is short of water because of power failure and stopping the pump and an atmosphere pressure opening spills water created by inopportune closing the return line through manual controlling the return valve are avoided. Advantages of the device are automatic operation, sensitivity and timeliness, low cost, long run length of the valve flap, small circulating resistance, reliable seal, safe operating and low expenses.
Description
The utility model relates to a kind of control valve, refers to a kind of autocontrol valve of boiler blow-down water especially.
Heating at present, the minute-pressure of heat supply water, the backwater control valve of normal-pressure hot-water boiler is the manual control valve, when having a power failure, stopping using, during termination of pumping, the pressure of return water that can not in time close is higher than minute-pressure, the height of normal-pressure hot-water boiler can cause minute-pressure, normal-pressure hot-water boiler spilling water or superpressure, and a large amount of hot water is run off, cause the waste of fuel and circulating hot water, cause on the other hand in the heating system and form the not hot phenomenon of local radiator because of lack of water.
Goal of the invention of the present utility model is to disclose a kind of backwater hydraulic pressure autocontrol valve, to solve minute-pressure, normal-pressure hot-water boiler has a power failure, termination of pumping or stop using and when restarting, hand control valve switching in time water return pipeline causes boiler spilling water and superpressure phenomenon.
Realize the technical solution of the present utility model purpose: opening is fixed a gland 9 by flange 10 above valve body 1, one piston rod 3 passes gland 9, the fixedly connected flap 2 in the lower end of piston rod 3, the current that flap 2 faces valve body 1 inside pass through valve port, the upper end of piston rod 3 places in the inner chamber of hydraulic cylinder 5, piston rod 3 upper ends do not have a piston 4, the fixedly connected top cover 11 in hydraulic cylinder 5 upper ends, between top cover 11 and piston 4, be equipped with a pressure spring 8, one side of hydraulic cylinder 5 is respectively equipped with circulating water pump press water import 6 and heating system backwater import 7, and press water import 6 and backwater import 7 all communicate with hydraulic cylinder 5.
When minute-pressure, normal-pressure hot-water boiler system start-up operation, circulating water pump starts, the circulating water pump press water import 6 of press water on the backwater autocontrol valve in the outlet pipe, enter in the hydraulic cylinder 5, promote piston 4, move upward after overcoming the pressure of the pressure of heating system backwater and spring 8, drive piston rod 3, mention flap 2, make in the heating system backwater flow through minute-pressure, normal-pressure hot-water boiler heating, after the circulating water pump pressurization, send into user's heating system again.When power failure, termination of pumping, when stopping using, the circulating pump discharge pipe internal pressure descends, and piston 4 is subjected to the double action of the pressure and spring 8 pressure of heating system backwater, overcomes the overbottom pressure in the circulating pump discharge pipe, moves downwards hydraulic cylinder 5 in.By piston rod 3, drive flap 2 and close water return pipeline, prevent that the backwater of heating system from flowing into minute-pressure, normal-pressure hot-water boiler.Avoid the lack of water of minute-pressure, atmospheric hot-water pot spilling water, superpressure and heating system.
The advantage of the utility model backwater autocontrol valve is:
1, when starting minute-pressure, normal-pressure hot-water boiler system, because circulating water pump rotates, the pressure on the outlet pipe is just passed to the backwater autocontrol valve, can in time open water return pipeline.
2, when have a power failure, stop using, during termination of pumping, because the circulating pump discharge pipe internal pressure descends.The backwater autocontrol valve can in time turn-off water return pipeline.
3, in time sensitive, the control automatically of action.
4, volume is little, part is few in addition, cost is low.
5, the flap stroke is long, and the current flow area is big, and circulating resistance is little.
6, safeguard, maintain simple, easy.
7, sealing is reliable, operating cost is low.
Accompanying drawing is a structural representation of the present utility model
Claims (1)
1, a kind of minute-pressure normal-pressure hot-water boiler backwater autocontrol valve, it is characterized in that opening is fixed a gland 9 by flange 10 above valve body 1, one piston rod 3 passes gland 9, the fixedly connected flap 2 in the lower end of piston rod 3, the current that flap 2 faces valve body 1 inside pass through valve port, the upper end of piston rod 3 places in the inner chamber of hydraulic cylinder 5, piston rod 3 upper ends are provided with a piston 4, the fixedly connected top cover 11 in hydraulic cylinder 5 upper ends, between top cover 11 and piston 4, be equipped with a pressure spring 8, one side of hydraulic cylinder 5 is respectively equipped with circulating water pump press water import 6 and heating system backwater import 7, and press water import 6 and backwater import 7 all communicate with hydraulic cylinder 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200139 CN2157362Y (en) | 1993-01-06 | 1993-01-06 | Automatic backwater controlling valve for micropressure and atmospheric hot-water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200139 CN2157362Y (en) | 1993-01-06 | 1993-01-06 | Automatic backwater controlling valve for micropressure and atmospheric hot-water boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2157362Y true CN2157362Y (en) | 1994-02-23 |
Family
ID=33784986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93200139 Expired - Fee Related CN2157362Y (en) | 1993-01-06 | 1993-01-06 | Automatic backwater controlling valve for micropressure and atmospheric hot-water boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2157362Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423505A (en) * | 2012-05-16 | 2013-12-04 | 江南阀门有限公司 | HV fast changeover valve |
| CN104100762A (en) * | 2014-07-23 | 2014-10-15 | 超达阀门集团股份有限公司 | Efficient pneumatic relief gate valve |
-
1993
- 1993-01-06 CN CN 93200139 patent/CN2157362Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423505A (en) * | 2012-05-16 | 2013-12-04 | 江南阀门有限公司 | HV fast changeover valve |
| CN103423505B (en) * | 2012-05-16 | 2016-03-23 | 江南阀门有限公司 | HV rapid switching valve |
| CN104100762A (en) * | 2014-07-23 | 2014-10-15 | 超达阀门集团股份有限公司 | Efficient pneumatic relief gate 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 |