CN203240018U - Anti-freezing pressure type vacuum circuit break valve - Google Patents
Anti-freezing pressure type vacuum circuit break valve Download PDFInfo
- Publication number
- CN203240018U CN203240018U CN 201320240204 CN201320240204U CN203240018U CN 203240018 U CN203240018 U CN 203240018U CN 201320240204 CN201320240204 CN 201320240204 CN 201320240204 U CN201320240204 U CN 201320240204U CN 203240018 U CN203240018 U CN 203240018U
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- type vacuum
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Abstract
The utility model discloses an anti-freezing pressure type vacuum circuit break valve which comprises a valve body, a water inlet, a water outlet, an air inlet, a check valve component, an air inlet valve component, an anti-freezing device, a valve hood and a cover cap. The anti-freezing pressure type vacuum circuit break valve is characterized in that the check valve component comprises a lower disc, a sealing gasket and a spring, a valve seat of a check valve is arranged on the valve body, the spring is arranged between an upper disc and the valve hood, and the spring enables the lower disc to downwards make contact with the valve seat of the check valve to keep the water inlet to be closed. The air inlet valve component comprises the upper disc, a sealing gasket and a spring, a valve seat of an air inlet valve is arranged on the valve hood, the spring is arranged between the upper disc and the valve hood, the spring enables the upper disc to downwards break away from the valve seat of the air inlet valve, the air inlet is made to be in the air intake state, and the anti-freezing device is arranged on the upper disc. According to the anti-freezing pressure type vacuum circuit break valve, the anti-freezing device is arranged on the upper disc, when the pressure in a cavity is increased due to the fact that piping water is frozen in the cold winter, the anti-freezing device is opened and drainages water, and the cavity pressure is in a certain pressure range, so that the valve and pipelines are prevented from being broken.
Description
Technical field
The utility model relates to a kind of anti-freezing pressure type vacuum breaker.
Background technique
Owing to in the water supply system because the reason such as cut off the water often easily produces vacuum or is lower than barometric pressure, cause the water siphon backflow phenomenon in the pipe-line system, severe patient may cause the pollution of water supply system.The prior art pressure type vacuum shut-off valve is by destroying the mode of vacuum, prevents that in the situation that siphon, the impure water behind the valve flows back to and causes drinking water pollution in the potable water system.But at cold area, after temperature drops to below 0 ℃, have in the valve cavity in the situation of hydraulic pressure, liquid water in the cavity can become ice gradually, it is large that its volume also becomes thereupon, becomes large volume, will inevitably cause this to continue to rise with the pressure in the valve of certain pressure closed at both ends.Because each positional parameter of valve is not quite similar, the speed that each position freezes is often inconsistent, therefore, gradually increase along with the degree of freezing, the ice cube volume increases the lasting cumulative of effect, more and more pressure that passed over by other positions will be born in the slower position of icing rate, and when pressure was added to the pressure that valve can bear, breaking just appearred in this valve.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, and a kind of Novel anti-freezing pressure type vacuum shut-off valve that can prevent in the cold snap bursting by freezing is provided.
The utility model solves the problems of the technologies described above and the technological scheme that adopts is: a kind of anti-freezing pressure type vacuum breaker, comprise valve body, water intake, water outlet, suction port, check valve assembly, the suction valve assembly, anti-icer, bonnet and cover cap, it is characterized in that: described check valve assembly comprises lower wall, sealing gasket and spring, check valve receptacle is arranged on the valve body, spring is arranged between dish and the bonnet, spring keeps down lower wall and contacts with check valve receptacle and keeps water intake to close, described suction valve comprises dish, sealing gasket and spring, the suction valve valve seat is arranged on the bonnet, spring is arranged between dish and the bonnet, spring keeps down dish to break away from the suction valve valve seat, make suction port keep air-suction state, anti-icer is arranged in the dish.
As improvement, described lower wall is provided with support up, and support adopts screw to be connected with lower wall.
As improvement, described bonnet is threaded in the top of valve body, is provided with O type circle between bonnet and the valve body.
As improvement, the top of described valve body cover has cover cap, and this cover cap utilizes Philip's head screw to be connected with the top of bonnet.When changing, described anti-icer is comprised of upper dish, steel ball, spring and plug, and upper dish adopts the material polypropylene that some strength and toughness are arranged to make, and steel ball and spring all adopt 304 stainless steel materials, and plug adopts brass material; Adopt ultrasonic welding to fix between plug and the upper dish.
Compared with prior art, the utility model has the advantage of: be provided with anti-icer coiling, winter is when cold, pipeline water be from outside freezing inward, ice begins to form and expansion, and produce pressure accumulatedly, when pressure is cumulative when reaching certain numerical value, act on the spring force that pressure on the steel ball surpasses top in the valve cavity, anti-icer is opened draining, make pressure in the cavity can not continue to rise or cumulative, remain in the certain pressure scope, thereby preventing that valve and pipeline from producing breaks.
Description of drawings
Structure sectional view when Fig. 1 is the utility model valve closing.
Structure sectional view when Fig. 2 is the utility model valve opening.
Fig. 3 is the structure sectional view of anti-icer described in the utility model.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
A kind of anti-freezing pressure type vacuum breaker comprises valve body 1, water intake 2, water outlet 3, suction port 4, check valve assembly 5, suction valve assembly 6, anti-icer 7, bonnet 8 and cover cap 9 as described in Figure 1; Described water intake 2 is arranged on the bottom of valve body 1, and water outlet 3 is arranged on a side of valve body 1, and suction port 4 is arranged on the top of valve body 1, and check valve assembly 5 and suction valve assembly 6 are arranged in the valve pocket; Described check valve assembly 5 comprises lower wall 51, sealing gasket 52 and spring 53; Described exhaust valve component 6 comprises dish 61, sealing gasket 62 and spring 63; Described check valve receptacle 11 is arranged on the valve body 1, and described spring 53 is arranged between lower wall 51 and the bonnet 8, and lower wall 51 is kept down, and sealing gasket 52 is contacted with check valve receptacle 11, makes water intake keep closed condition; Described suction valve valve seat 81 is arranged on the bonnet 8, and described spring 63 is arranged between dish 61 and the bonnet 8, and dish 61 is kept down, and sealing gasket 62 and suction valve valve seat 81 are broken away from, and makes suction port be in opening state; Described lower wall 51 is provided with support 54 up, and support 54 adopts screw 55 to be connected with lower wall 51; Described bonnet 8 is threaded in the top of valve body 1, is provided with O type circle 12 between bonnet 8 and the valve body 1; Above bonnet 8, be provided with cover cap 9, the top of this bonnet 8 utilizes countersunk head Philip's head screw 10 to be connected with the center of cover cap 9, described anti-icer 7 is arranged in the dish 61, described anti-icer 7 is comprised of valve port 71, steel ball 72, spring 73 and plug 74, valve port 71 is arranged on the dish 61, upper dish 61 adopts the material polypropylene that some strength and toughness are arranged to make, and steel ball 72 and spring 73 all adopt 304 stainless steel materials, and plug 74 adopts brass material; Adopt ultrasonic welding to fix between plug 74 and the upper dish 61.
Should clean first each part before assembling the utility model, must not have any impurity to bring in the valve body 1, the front need that come into operation are through the 0.6Mpa air tightness test, and pressurize just can normally be used without any leakage after 15 seconds.
Working principle of the present utility model is further described.
When water intake 2 water inlet and water flow pressure are normal, under the effect of hydraulic pressure, overcome the elastic force of spring 53, check valve receptacle on the valve body 1 separates with sealing gasket 52 on the lower wall 51, safety check is opened, simultaneously under the effect of hydraulic pressure, overcome the elastic force of spring 63, it is up mobile that upper dish 61 drives sealing gasket 62, and then sealing gasket 62 and the suction valve valve seat 81 on the bonnet 8 are combined closely, suction valve cuts out, and water supply system is separated with air intlet, and anti-sealing overflows, and current are normal in the pipeline at water intake 2 and water outlet 3 places.
When the water flow pressure that does not have water or a water outlet 3 when water intake 2 is higher than the water flow pressure of water intake 2, under the effect of spring 53 elastic force, sealing gasket 52 on the lower wall 51 contacts with check valve receptacle 11 on the valve body 1, closure of check ring, prevent aqueous reflux, simultaneously, under the elastic force effect of spring 63, suction valve valve seat on the bonnet 8 and the sealing gasket on the upper dish 61 62 break away from, INO, suction port have air to enter, and have destroyed the vacuum in the water system pipeline, prevent water siphon or the backflow of water outlet 3, prevented that well water from causing secondary pollution and prevent from water consumption device or water pump are caused impact of water hammer.
Winter is when cold, pipeline internal water outside is freezing inward, ice begins to form and expansion, and produce pressure accumulated, when pressure is cumulative when reaching certain numerical value, act on the spring force that pressure on the steel ball 72 surpasses spring 73 in the valve cavity, steel ball 72 is separated with valve port 71, and anti-icer 7 is opened draining, makes the pressure in the cavity can not continue to rise or add up, remain in the certain pressure scope, thereby preventing that valve and pipeline from producing breaks.Pressure drop in cavity is to certain value, and when being lower than the spring force of spring 73, under the effect of spring force, steel ball 72 contacts with valve port 71 again, and anti-icer cuts out not draining.
Claims (5)
1. anti-freezing pressure type vacuum breaker, comprise valve body, water intake, water outlet, suction port, check valve assembly, the suction valve assembly, anti-icer, bonnet and cover cap, it is characterized in that: described check valve assembly comprises lower wall, sealing gasket and spring, check valve receptacle is arranged on the valve body, spring is arranged between dish and the bonnet, spring keeps down lower wall and contacts with check valve receptacle and keeps water intake to close, described suction valve comprises dish, sealing gasket and spring, the suction valve valve seat is arranged on the bonnet, spring is arranged between dish and the bonnet, spring keeps down dish to break away from the suction valve valve seat, make suction port keep air-suction state, anti-icer is arranged in the dish.
2. anti-freezing pressure type vacuum breaker according to claim 1, it is characterized in that: described lower wall is provided with support up, and support adopts screw to be connected with lower wall.
3. anti-freezing pressure type vacuum breaker according to claim 1, it is characterized in that: described bonnet is threaded in the top of valve body, is provided with O type circle between bonnet and the valve body.
4. anti-freezing pressure type vacuum breaker according to claim 1 is characterized in that: the top cover of described valve body has cover cap, and this cover cap utilizes Philip's head screw to be connected with the top of bonnet.
5. anti-freezing pressure type vacuum breaker according to claim 1, it is characterized in that: described anti-icer is comprised of upper dish, steel ball, spring and plug, upper dish adopts the material polypropylene that some strength and toughness are arranged to make, steel ball and spring all adopt 304 stainless steel materials, and plug adopts brass material; Adopt ultrasonic welding to fix between plug and the upper dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240204 CN203240018U (en) | 2013-05-07 | 2013-05-07 | Anti-freezing pressure type vacuum circuit break valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240204 CN203240018U (en) | 2013-05-07 | 2013-05-07 | Anti-freezing pressure type vacuum circuit break valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203240018U true CN203240018U (en) | 2013-10-16 |
Family
ID=49317316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320240204 Expired - Fee Related CN203240018U (en) | 2013-05-07 | 2013-05-07 | Anti-freezing pressure type vacuum circuit break valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203240018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764021A (en) * | 2016-12-03 | 2017-05-31 | 武海强 | A kind of ice drives freezing protection control device |
-
2013
- 2013-05-07 CN CN 201320240204 patent/CN203240018U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764021A (en) * | 2016-12-03 | 2017-05-31 | 武海强 | A kind of ice drives freezing protection control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20190507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |