CN201439836U - Vacuum regulating valve capable of automatically regulating opening of valve - Google Patents
Vacuum regulating valve capable of automatically regulating opening of valve Download PDFInfo
- Publication number
- CN201439836U CN201439836U CN2009200581413U CN200920058141U CN201439836U CN 201439836 U CN201439836 U CN 201439836U CN 2009200581413 U CN2009200581413 U CN 2009200581413U CN 200920058141 U CN200920058141 U CN 200920058141U CN 201439836 U CN201439836 U CN 201439836U
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- valve
- vacuum
- spring
- vacuum system
- nut
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Abstract
The utility model relates to a vacuum regulating valve capable of automatically regulating the opening of a valve, which comprises a valve seat and a valve arranged in the valve seat, and is mainly characterized in that a spring is arranged in the valve seat; spring force acts on the valve; and the direction of spring force can close the valve. The vacuum regulating valve automatically regulates the opening of the valve with the spring, so that the vacuum in a vacuum system can basically remain unchanged; more importantly, even if the pressure in the vacuum system is equal to or even higher than the external pressure, the vacuum regulating valve can also ensure the fluid in the vacuum system is not leaked out, thereby preventing the leakage of hazardous substances from polluting the environment and harming the human body.
Description
Technical field
The utility model relates to the valve that is applied in the vacuum system, especially for guaranteeing that degree of vacuum in the vacuum system is in the vacuum breaker in a certain stationary value scope.
Background technique
The basic functional principle of vacuum breaker is the aperture by control valve, and ambient air is entered in the vacuum system after the vacuum breaker decompression, makes vacuum system inside keep certain degree of vacuum with this.Yet, existing Purely mechanical vacuum breaker all can not the automatic regulating valve door aperture, when the degree of vacuum in the vacuum system is lower than setting value (just when pressure is higher than setting value), can only rely on and manually reduce valve opening, must cause the hysteresis quality of adjusting like this, be difficult to guarantee the degree of vacuum of vacuum system internal stability.More serious problem is, in case the pressure in the vacuum system is equal to, or greater than ambient pressure, the fluid in the vacuum system will may cause serious consequence thus outside vacuum breaker leaks to vacuum system.For example the fluid in the vacuum system is toxic gas or liquid, and gas of Guo Louing or liquid will cause environmental pollution even cause personal injury so.Though those DYN dynamic vacuum breakers can increase structural complexity and cost because of it must attach electrical control equipment by the aperture of electrical control equipment automatic regulating valve door.
Summary of the invention
But the purpose of this utility model provides a kind of vacuum breaker of automatic regulating valve door aperture.
For this reason, vacuum breaker described in the utility model comprises valve seat and the valve that is installed in the valve seat, especially, is provided with spring between valve seat and valve, and spring force acts on the valve, and the direction of spring force is to impel the direction of valve closing.During vacuum breaker work, when the degree of vacuum of vacuum system inside is in the setting range, the pressure in the vacuum system external world is greater than the vacuum system pressure inside, the pressure difference that forms makes the valve of vacuum breaker overcome the effect of spring force and opens, pressure difference and spring force that vacuum system is inside and outside balance each other, valve opening remains unchanged, and the degree of vacuum of vacuum system inside remains unchanged; When causing the degree of vacuum of vacuum system inside on the low side because of certain factor when (that is pressure is higher), above-mentioned balance is broken, valve will reduce aperture automatically under the spring force effect, can cause the degree of vacuum of vacuum system inside to be gone up so again (that is pressure return fall), so pressure difference that vacuum system is inside and outside and spring force are kept a kind of new balance, valve remains on new aperture, and the degree of vacuum of vacuum system inside then can remain unchanged substantially; If continue to raise because of certain special circumstances cause the pressure in the vacuum system, cause the vacuum system internal pressure to equal even greater than ambient pressure, valve will be closed under the spring force effect fully so, has avoided the interior fluid of vacuum system outside vacuum breaker leaks to vacuum system; Otherwise, when causing the degree of vacuum of vacuum system inside higher because of certain factor when (that is pressure is on the low side), the inside and outside pressure difference of vacuum system will be greater than spring force, the aperture of valve will increase, can cause the degree of vacuum of vacuum system inside to be returned so again and fall (that is pressure rise), so pressure difference that vacuum system is inside and outside and spring force are kept a kind of new balance, valve remains on new aperture, and the degree of vacuum of vacuum system inside then can remain unchanged substantially.From above-mentioned operating principle as seen, the utility model can be according to the operating mode automatic regulating valve door aperture of vacuum system.
The utility model has the advantages that the degree of vacuum that not only can accurately, stably guarantee in the vacuum system, and the more important thing is, even the pressure in the vacuum system equals even greater than ambient pressure, fluid in the vacuum system can not let out yet, and has avoided the leakage pollution on the environment of harmful matter and the injury that the person is caused thus.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the utility model embodiment 2 a structural representation.
Embodiment
Referring to Fig. 1, but the vacuum breaker of automatic regulating valve door aperture comprises a valve seat 1, offers suction port 2 and air outlet 3 in the valve seat 1, and air outlet 3 is connected with vacuum system, suction port 2 communicate with the external world of vacuum system (for example communicating with atmosphere).Be provided with valve 4 in the valve seat 1, valve 4 is in closed condition among the figure.When valve 4 moved down the certain aperture of formation, the fluid in the vacuum system external world entered in the vacuum system through the decompression of valve 4 through suction port 2, air outlet 3 again, made vacuum system inside keep certain degree of vacuum with this.For can automatic regulating valve the aperture of door 4, between valve seat 1 and valve 4, be provided with spring 5, the lower end roof pressure of spring 5 is on valve seat 1, the upper end indirectly-acting of spring 5 is on valve 4, spring force impels valve 4 to move up to cut out.The air outlet 3 of vacuum breaker is with after vacuum system is connected, and the aperture of valve 4 is decided by the pressure difference that vacuum system is inner with extraneous, and the active force of 5 pairs of valves 4 of spring.When the degree of vacuum of vacuum system inside is in the setting range, vacuum system is inner to be impelled valve 4 to move down with extraneous pressure difference to open, and impelling valve 4 to move up, spring force closes, so external and internal pressure difference and spring force finally are in a kind of state of equilibrium, valve 4 keeps certain aperture constant, and the degree of vacuum of vacuum system inside is in steady state; When causing the degree of vacuum of vacuum system inside on the low side because of certain factor when (that is pressure is higher), above-mentioned balance is broken, the active force of 5 pairs of valves 4 of spring is greater than the active force of external and internal pressure difference to valve 4, so valve 4 moves up under the effect of spring 5, aperture reduces, can cause the degree of vacuum of vacuum system inside to be gone up thus again (that is pressure return fall), so external and internal pressure difference and spring force form new balance, valve 4 remains on new aperture, and the degree of vacuum of vacuum system inside remains unchanged substantially; If because of certain special circumstances (for example vacuum pump shutdown) cause pressure in the vacuum system to equal even greater than ambient pressure, valve 4 will be moved upward to complete closing state under the effect of spring 5 so, promptly as shown in Figure 1, avoided the interior fluid of vacuum system thus outside vacuum breaker leaks to vacuum system; Otherwise, when causing the degree of vacuum of vacuum system inside higher because of certain factor when (that is pressure is on the low side), the active force of 5 pairs of valves 4 of spring is less than the active force of the inside and outside pressure difference of vacuum system to valve 4, so valve 4 moves down under the inside and outside action of pressure of vacuum system, aperture increases, can cause the degree of vacuum of vacuum system inside to be returned thus again and fall (that is pressure rise), so external and internal pressure difference and spring force form new balance, valve 4 remains on new aperture, and the degree of vacuum of vacuum system inside still remains unchanged substantially.
As preferred forms, end roof pressure with spring 5 embodiment illustrated in fig. 1 is on a nut 6, nut 6 scyewed joint are on a screw rod 7, screw rod 7 is fixed into one with valve 4, the spring force of spring 5 acts on the valve 4 through nut 6, screw rod 7, and the direction that nut 6 is advanced along screw rod 7 spirals is the direction that compresses with pull-off spring 5.Can adjust the decrement of spring 5 by rotating nut 6, change the pressure of 5 pairs of valves 4 of spring, thereby can regulate the default degree of vacuum of vacuum system easily.Screw rod 7 can be welding or global formation with the mode that valve 4 is fixed.As further improving, nut 6 is sleeve shape, and spring 5 is covered in it, so can make spring 5 be subjected to good protection.Two other nut 8,9 on the screw rod 7 is pressed on the nut 6, plays the effect of locking nut 6.
Another embodiment shown in Figure 2 has set up the little spring 10 of an elastic force less than spring 5 in valve seat 1 on the basis of Fig. 1, the spring force of little spring 10 acts on the valve 4 and direction is a direction of impelling valve 4 to open.After setting up little spring 10, but the part elastic force of little spring 10 balance springs 5, thus can increase the pretightening force of spring 5 accordingly.When vacuum system is inner when impelling valve 4 to move down to open with extraneous pressure difference, spring 5 continues elastic force reinforcement by compression, and little spring 10 loosens, elastic force weakens, when in case the vacuum system internal vacuum is lower than setting value, spring 5 is poor with the elastic force that little spring 10 is produced, and adds the inner pressure difference with the external world of vacuum system and can impel valve 4 to close more rapidly, thereby can guarantee the degree of vacuum that vacuum system is more stable.Other structures of present embodiment are identical with Fig. 1, repeat no more.
Claims (4)
1. but the vacuum breaker of automatic regulating valve door aperture comprises valve seat and is installed in the interior valve of valve seat, and it is characterized in that: be provided with spring between valve seat and valve, spring force acts on the valve, and the direction of spring force is to impel the direction of valve closing.
2. vacuum breaker as claimed in claim 1, it is characterized in that: an end roof pressure of described spring is on a nut, nut thread is connected on the screw rod, screw rod and valve are fixed into one, on valve, the direction that nut is advanced along screw spiral is the direction that compresses with pull-off spring to the spring force of described spring through nut, screw acting.
3. vacuum breaker as claimed in claim 2 is characterized in that: described nut is sleeve shape, and described spring is covered in it.
4. as the described vacuum breaker of one of claim 1 to 3, it is characterized in that: be provided with the little spring of elastic force less than described spring in valve seat, the spring force of this little spring acts on the valve and direction is to impel the direction of valve open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200581413U CN201439836U (en) | 2009-06-05 | 2009-06-05 | Vacuum regulating valve capable of automatically regulating opening of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200581413U CN201439836U (en) | 2009-06-05 | 2009-06-05 | Vacuum regulating valve capable of automatically regulating opening of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439836U true CN201439836U (en) | 2010-04-21 |
Family
ID=42544507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200581413U Expired - Fee Related CN201439836U (en) | 2009-06-05 | 2009-06-05 | Vacuum regulating valve capable of automatically regulating opening of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439836U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170167808A1 (en) * | 2015-12-11 | 2017-06-15 | Hyundai Motor Company | Apparatus for protecting negative pressure |
| CN108478264A (en) * | 2018-02-05 | 2018-09-04 | 日照轩宜信息科技有限公司 | A kind of portable midwifery device |
| CN109827446A (en) * | 2018-12-24 | 2019-05-31 | 陕西能源麟北发电有限公司 | A kind of method and vacuum pump system improving thermal power plant's generating set circulation thermal efficiency |
-
2009
- 2009-06-05 CN CN2009200581413U patent/CN201439836U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170167808A1 (en) * | 2015-12-11 | 2017-06-15 | Hyundai Motor Company | Apparatus for protecting negative pressure |
| CN108478264A (en) * | 2018-02-05 | 2018-09-04 | 日照轩宜信息科技有限公司 | A kind of portable midwifery device |
| CN109827446A (en) * | 2018-12-24 | 2019-05-31 | 陕西能源麟北发电有限公司 | A kind of method and vacuum pump system improving thermal power plant's generating set circulation thermal efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FOSHAN ANDRITZ TECHNOLOGIES LTD. Free format text: FORMER OWNER: FOSHAN KEN FULAI ANDE LEEDS PUMP CO., LTD. Effective date: 20100805 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528000 NO.14, HEBIN ROAD, CHANCHENG DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE TO: 528000 NO.9, TIANBAO ROAD, INDUSTRY ZONE OF WEST DISTRICT, CHANCHENG DISTRICT, FOSHAN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100805 Address after: 528000 Guangdong city of Foshan Province Tianbao West Industrial Zone Chancheng District Road No. 9 Patentee after: Foshan Andritz Technologies Ltd. Address before: 528000 Guangdong Province, Foshan city Chancheng District River Road No. 14 Patentee before: Foshan Kenfulai Andritz pump Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: ANDRITZ (CHINA) CO., LTD. Free format text: FORMER NAME: FOSHAN ANDRITZ TECHNOLOGIES LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Guangdong city of Foshan Province Tianbao West Industrial Zone Chancheng District Road No. 9 Patentee after: Andritz (China) Ltd. Address before: 528000 Guangdong city of Foshan Province Tianbao West Industrial Zone Chancheng District Road No. 9 Patentee before: Foshan Andritz Technologies 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: 20100421 Termination date: 20180605 |