CN202646810U - Vacuum negative pressure safety valve - Google Patents
Vacuum negative pressure safety valve Download PDFInfo
- Publication number
- CN202646810U CN202646810U CN 201220320073 CN201220320073U CN202646810U CN 202646810 U CN202646810 U CN 202646810U CN 201220320073 CN201220320073 CN 201220320073 CN 201220320073 U CN201220320073 U CN 201220320073U CN 202646810 U CN202646810 U CN 202646810U
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- Prior art keywords
- valve
- negative pressure
- seat
- spring
- valve seat
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- Expired - Fee Related
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Abstract
The utility model discloses a vacuum negative pressure safety valve, which comprises a valve body, a valve rod, a valve cover and a valve seat, wherein the valve rod is arranged in a valve cavity which is formed by buckling the valve body and the valve cover; the valve seat is fixedly arranged at the junction of the valve body and the valve cover and is integrally placed in the valve body; the valve rod penetrates through a guide sleeve which is arranged in the center of the valve seat to be connected to a valve flap at the bottom of the valve seat; a spring is sleeved on the periphery of the valve rod; and the upper end of the spring is butted against the bottom of a locking nut, which is sleeved on the upper end of the valve rod, through a spring seat, and the lower end of the spring is butted against the valve seat and the guide sleeve. The product has the advantages of novel design, small size, high pressure resistance, accurate opening pressure, convenience in mounting and maintenance, durability, safe operation and the like.
Description
Technical field
The utility model relates to valve, specifically the negative pressure of vacuum safety valve.
Background technique
The safety valve of present prior art, be applied on the pipeline or pressurized container of protected system, to guarantee the Security of pipeline or pressurized container, but all there is certain defective in present safety valve, action is smooth not when opening or closing, affect using effect, more can not guarantee the operation of container and security of system; In general only be used for the specific underpressure system, be not applied in the normal non-negative pressure system, but various Korrosionsmedium containers in reality, such as absorption tower, fractionating tower, storage tank, basin etc., after passing into steam clean, if diffusion valve is not opened steam-condensation, produce negative pressure, this negative pressure state that occurs suddenly can't be processed.So for negative pressure system or the non-negative pressure system of negative pressure state might occur, employed safety valve must completely newly be developed.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the negative pressure of vacuum safety valve of above-mentioned disappearance.
The model utility content
The purpose of this utility model is to provide the negative pressure of vacuum safety valve, and this product has modern design, the advantage such as volume is little, high pressure resistant, cracking pressure is accurate, convenient for installation and maintenance, durable, security of operation.
In order to reach above-mentioned purpose, the utility model has adopted following technological scheme, and the negative pressure of vacuum safety valve comprises valve body, valve rod, valve gap, valve seat, and described valve rod is arranged on by valve body and valve gap and fastens the valve pocket inside that consists of; Described valve seat is fixed on the joint of valve body and valve gap, and integral body places valve inner; Described valve rod is connected on the flap of valve seat bottom after passing the guide pin bushing that the valve seat center arranges; Described valve rod periphery cover has spring, and this spring upper end is connected to the locking nut bottom that is enclosed within the valve rod upper end by spring seat, and this spring lower end is connected on valve seat and the guide pin bushing.
After passing valve gap, described valve rod upper end is provided with limiting stopper.
Described valve seat periphery is provided with Adjusting ring, and this Adjusting ring is by the set screw location of passing and being fixed on the valve body wall.
All with bolts fixing between described valve gap and valve seat, valve seat and the valve body; Described valve rod lower end also is connected with flap by screw.
The all sidewalls of described valve gap offer open-work.
Described valve seat and valve clack sealing surface all adopt Hardmetal materials to make with extra care and form.
Compared to prior art, the utlity model has following beneficial effect:
A: if design is used for negative pressure system: when negative pressure in the negative-pressure container system surpassed permitted value, this valve base and flap were opened automatically, air amount.When negative pressure was reduced to specified value, valve can autoshutdown by behind the pressure-acting of spring.Thereby guarantee the operation of equipment container and security of system.
B: if design is used for normal non-negative pressure system: various Korrosionsmedium containers, such as absorption tower, fractionating tower, storage tank, basin etc., after passing into steam clean, if diffusion valve is not opened, steam-condensation produces negative pressure, this valve base separates automatically with flap, and this valve is opened automatically, air amount.When negative pressure was reduced to specified value, valve forced valve seat and valve clack sealing surface to reset, this valve autoshutdown by after the effect of spring force.Thereby guarantee the operation of equipment container and security of system.
Description of drawings
Fig. 1 is the structural representation of the utility model negative pressure of vacuum safety valve.
Among the figure: 1, valve body; 2, flap; 3, Adjusting ring; 4, valve seat; 5, valve gap; 6, guide pin bushing; 7, valve rod; 8, spring; 9, spring seat; 10, locking nut; 11, limiting stopper.
Embodiment
Relevant detailed description of the present utility model and technology contents cooperate description of drawings as follows, yet accompanying drawing only provides the usefulness of reference with explanation, and the utility model is limited.
According to shown in Figure 1, the negative pressure of vacuum safety valve comprises valve body 1, valve rod 7, valve gap 5, valve seat 4, and described valve rod 7 is arranged on by valve body 1 and valve gap 5 and fastens the valve pocket inside that consists of; Described valve seat 4 is fixed on the joint of valve body 1 and valve gap 5, and integral body places valve inner; Described valve rod 7 is connected on the flap 2 of valve seat bottom after passing the guide pin bushing that valve seat 4 centers arrange; Described valve rod periphery cover has spring 8, and this spring upper end is connected to locking nut 10 bottoms that are enclosed within the valve rod upper end by spring seat 9, and this spring lower end is connected on valve seat and the guide pin bushing.After passing valve gap, described valve rod 7 upper ends are provided with limiting stopper 11.Described valve seat periphery is provided with Adjusting ring 3, and this Adjusting ring is by the set screw location of passing and being fixed on the valve body wall.All with bolts fixing between described valve gap and valve seat, valve seat and the valve body; Described valve rod lower end also is connected with flap by screw.The all sidewalls of described valve gap offer open-work.Described valve seat and valve clack sealing surface all adopt Hardmetal materials to make with extra care and form.
If be used for negative pressure system: when negative pressure in the negative-pressure container system surpassed permitted value, this valve base 4 was opened air amount automatically with flap 2.When negative pressure was reduced to specified value, valve can autoshutdown by behind the pressure-acting of spring 8.Thereby guarantee the operation of equipment container and security of system.
If be used for normal non-negative pressure system: various Korrosionsmedium containers, such as absorption tower, fractionating tower, storage tank, basin etc., after passing into steam clean, if diffusion valve is not opened, steam-condensation produces negative pressure, this valve base 4 separates automatically with flap 2, and this valve is opened automatically, air amount.When negative pressure was reduced to specified value, valve forced valve seat 4 and flap 2 sealing surfaces to reset this valve autoshutdown by after the effect of spring 8 power.Thereby guarantee the operation of equipment container and security of system.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.
Claims (6)
1. the negative pressure of vacuum safety valve comprises valve body, valve rod, valve gap, valve seat, and described valve rod is arranged on by valve body and valve gap and fastens the valve pocket inside that consists of; It is characterized in that described valve seat is fixed on the joint of valve body and valve gap, and integral body places valve inner; Described valve rod is connected on the flap of valve seat bottom after passing the guide pin bushing that the valve seat center arranges; Described valve rod periphery cover has spring, and this spring upper end is connected to the locking nut bottom that is enclosed within the valve rod upper end by spring seat, and this spring lower end is connected on valve seat and the guide pin bushing.
2. negative pressure of vacuum safety valve according to claim 1 is characterized in that, is provided with limiting stopper after described valve rod upper end passes valve gap.
3. negative pressure of vacuum safety valve according to claim 1 is characterized in that, described valve seat periphery is provided with Adjusting ring, and this Adjusting ring is by the set screw location of passing and being fixed on the valve body wall.
4. negative pressure of vacuum safety valve according to claim 1 is characterized in that, and is all with bolts fixing between described valve gap and valve seat, valve seat and the valve body; Described valve rod lower end also is connected with flap by screw.
5. negative pressure of vacuum safety valve according to claim 1 is characterized in that, all sidewalls of described valve gap offer open-work.
6. negative pressure of vacuum safety valve according to claim 1 is characterized in that, described valve seat and valve clack sealing surface all adopt Hardmetal materials to make with extra care and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320073 CN202646810U (en) | 2012-07-04 | 2012-07-04 | Vacuum negative pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320073 CN202646810U (en) | 2012-07-04 | 2012-07-04 | Vacuum negative pressure safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646810U true CN202646810U (en) | 2013-01-02 |
Family
ID=47415919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220320073 Expired - Fee Related CN202646810U (en) | 2012-07-04 | 2012-07-04 | Vacuum negative pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646810U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265960A (en) * | 2014-08-18 | 2015-01-07 | 中国电子科技集团公司第四十八研究所 | One-way pressure relief valve for MOCVD (metal organic chemical vapor deposition) equipment vacuum system |
| CN106246978A (en) * | 2015-12-29 | 2016-12-21 | 中国特种飞行器研究所 | A kind of aerostatics is with tool-free machine automatization drain tap |
| CN112344067A (en) * | 2020-11-04 | 2021-02-09 | 上海梅陇阀门有限公司 | Soft sealing safety valve for outdoor fuel tank |
-
2012
- 2012-07-04 CN CN 201220320073 patent/CN202646810U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265960A (en) * | 2014-08-18 | 2015-01-07 | 中国电子科技集团公司第四十八研究所 | One-way pressure relief valve for MOCVD (metal organic chemical vapor deposition) equipment vacuum system |
| CN104265960B (en) * | 2014-08-18 | 2016-05-18 | 中国电子科技集团公司第四十八研究所 | A kind of unidirectional relief valve for MOCVD device vacuum system |
| CN106246978A (en) * | 2015-12-29 | 2016-12-21 | 中国特种飞行器研究所 | A kind of aerostatics is with tool-free machine automatization drain tap |
| CN112344067A (en) * | 2020-11-04 | 2021-02-09 | 上海梅陇阀门有限公司 | Soft sealing safety valve for outdoor fuel tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The eastern Yongjia County of Wenzhou City, Zhejiang province 325000 streets and village Patentee after: Henghua Valve Co. Ltd. Address before: The eastern Yongjia County of Wenzhou City, Zhejiang province 325000 streets and village Patentee before: Zhejiang Heng Hua valve Co., Ltd |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190704 |