CN2410503Y - Automatic change check valve - Google Patents
Automatic change check valve Download PDFInfo
- Publication number
- CN2410503Y CN2410503Y CN 99255433 CN99255433U CN2410503Y CN 2410503 Y CN2410503 Y CN 2410503Y CN 99255433 CN99255433 CN 99255433 CN 99255433 U CN99255433 U CN 99255433U CN 2410503 Y CN2410503 Y CN 2410503Y
- Authority
- CN
- China
- Prior art keywords
- flap
- utility
- model
- water
- valve
- 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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- Details Of Reciprocating Pumps (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses an automatic reversing check valve. The utility model is composed of reversing valve clacks which are fixed on both ends of a reversing shaft, and a check valve clack which is arranged on a water outlet. The utility model can realize pump stopping and prevention of water back flowing of systems, and realize automatic reversal. The utility model is provided with a control hole which is used as a control source, which can improve the automation degree of the overall system. The utility model has reasonable structure, and is convenient for realizing automatic control of the systems.
Description
The utility model relates to a kind of safety check.
The application of safety check is very extensive, and for example in the normal-pressure boiler heating system, safety check is used for can preventing between water pump and the heating system aqueous reflux of the heating system that causes because of termination of pumping.Mostly use two water pumps in the existing heating system, promptly one is working pump, and another is a stand by pump.All safety check will be installed between each water pump and heating system like this, installation is loaded down with trivial details.Existing heating system will improve automaticity and mostly utilize the hydraulic pressure between water pump and the safety check to be used as the control source of control automatically.For example utilize pump working pressure to open and close the back-water valve (BWV) of return water system, each water pump all will be communicated with controlled back-water valve (BWV) like this, and with pipeline that each water pump communicates on also to install valve additional, water circulates between two water pumps when preventing because of water pump replacement work, not in the metering-in control system.
The purpose of this utility model is to provide a kind of and is easy to installation and makes things convenient for the realization system safety check of control automatically.
For in the commutation chamber that reaches above-mentioned purpose the utility model automatic reversing check valve valve body the reversing shaft that is sleeved in the bearing hole being arranged, the both sides of reversing shaft are fixed with the commutation flap that matches with the valve inleting water mouth respectively, the water outlet place of valve body is provided with the flap support, leader casing fixing on the non-return flap is contained in the hole of flap support, between non-return flap and the flap support spring that is sleeved on the guide rod is arranged.
Have the control hole that communicates with the chamber of commutating on the valve body.
Owing in the commutation chamber of valve body reversing shaft is arranged after adopting said structure, there is the commutation flap that matches with the valve inleting water mouth reversing shaft both sides.Two water intakes of valve body communicate with work water pump and reserve pump respectively.When a pump working, the water inlet that communicates with it produces the hydraulic pressure flap that will commutate and backs down, and reversing shaft drives another flap that commutates and will block with the water intake that the water pump of not working communicates.When two water pumps were not worked, the non-return flap on valve body top can be closed aqueous reflux in the anti-locking system under the effect of spring.Replaced two original safety check with a valve, installation is convenient.Have the control hole that communicates with the chamber of commutating on the valve body, control hole can be used as the automatic control source of heating system.When two water pump replacement work, the hydraulic pressure at control hole place does not have big variation, do not influence controlled device work, simultaneously because the water pump one side water intake of not working is plugged, water can not appear again two pump house circuit phenomenons, this automatic reversing check valve is rational in infrastructure, is easy to the realization system and controls automatically.
Embodiment is further described the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model schematic appearance.
As seen from Figure 1, Figure 2, the reversing shaft 7 that is sleeved in the bearing hole 8 is arranged in the commutation chamber of valve body, the both sides of reversing shaft 7 are fixed with the commutation flap 5 that matches with valve inleting water mouth 6 respectively.Because the hydraulic pressure that the work water pump produces can promote reversing shaft 7 motions, the water intake 6 that drive commutation flap 5 will communicate with the water pump of not working is blocked, and has realized valve automatic reverse when water pump replacement work.Water outlet 1 place of valve body is provided with flap support 2, and guide rod 3 fixing on the non-return flap 4 is sleeved in the hole of flap support 2, and the spring 9 that is sleeved on the guide rod 3 is arranged between non-return flap 4 and the flap support 2.When water pump all quit work, non-return flap 4 was closed the aqueous reflux that can prevent in the locking system under the effect of spring 9.Have the control hole 10 that communicates with the chamber of commutating on the valve body, control hole 10 can connect controlled device, both can utilize the hydraulic pressure of work water pump, can prevent that again sealing circulates between two water pumps, and this check valve design is reasonable, and compact structure is easy to the realization system and controls automatically.
Claims (2)
1, automatic reversing check valve, it is characterized in that in the commutation chamber of valve body the reversing shaft that is sleeved in the bearing hole being arranged, the both sides of reversing shaft are fixed with the commutation flap that matches with the valve inleting water mouth respectively, the water outlet place of valve body is provided with the flap support, leader casing fixing on the non-return flap is contained in the hole of flap support, between non-return flap and the flap support spring that is sleeved on the guide rod is arranged.
2, safety check according to claim 1 is characterized in that having on the valve body control hole that communicates with the chamber of commutating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99255433 CN2410503Y (en) | 1999-12-03 | 1999-12-03 | Automatic change check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99255433 CN2410503Y (en) | 1999-12-03 | 1999-12-03 | Automatic change check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410503Y true CN2410503Y (en) | 2000-12-13 |
Family
ID=34038803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99255433 Expired - Fee Related CN2410503Y (en) | 1999-12-03 | 1999-12-03 | Automatic change check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2410503Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423487A (en) * | 2013-09-09 | 2013-12-04 | 浙江汉威阀门制造有限公司 | T-shaped synchronous drive triplex sealing check valve |
| CN103438251A (en) * | 2013-08-29 | 2013-12-11 | 浙江汉威阀门制造有限公司 | T-type mute check valve |
-
1999
- 1999-12-03 CN CN 99255433 patent/CN2410503Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438251A (en) * | 2013-08-29 | 2013-12-11 | 浙江汉威阀门制造有限公司 | T-type mute check valve |
| CN103438251B (en) * | 2013-08-29 | 2016-08-31 | 浙江汉威阀门制造有限公司 | A kind of T-type mute check valve |
| CN103423487A (en) * | 2013-09-09 | 2013-12-04 | 浙江汉威阀门制造有限公司 | T-shaped synchronous drive triplex sealing check valve |
| CN103423487B (en) * | 2013-09-09 | 2016-09-07 | 浙江汉威阀门制造有限公司 | A kind of T-shaped synchronization drives triplex sealing check 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 |