CN201827496U - Negative-pressure preventive control valve - Google Patents
Negative-pressure preventive control valve Download PDFInfo
- Publication number
- CN201827496U CN201827496U CN2010205361836U CN201020536183U CN201827496U CN 201827496 U CN201827496 U CN 201827496U CN 2010205361836 U CN2010205361836 U CN 2010205361836U CN 201020536183 U CN201020536183 U CN 201020536183U CN 201827496 U CN201827496 U CN 201827496U
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- CN
- China
- Prior art keywords
- guide cylinder
- control valve
- current stabilization
- negative
- guide barrel
- 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
A negative-pressure preventive control valve belongs to the field of negative-pressure preventive control valves of water supply plants. The negative-pressure preventive control valve comprises a protective hood (1), a floater (9) and a guide barrel (11), the floater (9) is mounted in the guide barrel (11), the lower portion of the guide barrel (11) is arranged in a flow-stabilizing tank (10), and a guide barrel lower through hole (12) is disposed at the bottom of the guide barrel (11). The negative-pressure preventive control valve is characterized in that the top of the floater (9) is connected with a sealing cone (6), a guide rod (13) is perpendicularly arranged at the bottom of the floater (9), upper and lower flanges (5 and 7) connected via a fastening bolt (8) are mounted on the outside of the upper end of the guide barrel (11), the upper portion of the upper flange (5) is connected with a sealing gland (3) with an air filter (15) inside, a rubber sealing gasket (4) is arranged between the sealing gland (3) and the guide barrel (11), an anti-flushing backflow bin (2) is disposed above the rubber sealing gasket (4), and the upper portion of the anti-flushing backflow bin (2) is connected to the top of the protective hood (1). The negative-pressure preventive control valve has the advantages that the valve is fine in guiding, tight in sealing and smooth in air inflow and exhaust, prevents spraying and overflowing, is watertight, and the like.
Description
Technical field
Anti-negative pressure control valve belongs to the anti-negative pressure control valve field of water supply equipment, is specifically related to a kind of anti-negative pressure control valve.
Background technique
In frequency-changing water supply device, negative pressure is sprayed water in exhaust process, spilling water influences city planting ductwork for anti-locking system occurs, the normal employing prevented negative pressure control valve, and traditional anti-negative pressure control valve inside all is only to control with a ball float, though also can seal water, spheroid in guide cylinder owing to the cause that gone out by water, ball float rapidly rotation is difficult for guiding, and easy to wear, forward the ball weld joint to and easily leak, the bad so that blowout prevention of sealing effect, anti-overflow effect are unsatisfactory.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of guiding well, tight, the antileaking of sealing, blowout prevention, the effective anti-negative pressure control valve of anti-overflow.
The technological scheme that its technical problem that solves the utility model adopts is: this anti-negative pressure control valve, comprise outside guard shield, ball float and guide cylinder, ball float is installed in the guide cylinder, pack in the current stabilization tank body in the guide cylinder bottom, the guide cylinder bottom has the guide cylinder lower through-hole, it is characterized in that: the ball float top is connected to seal cones, bottom vertical is provided with guide rod, guide cylinder upper end is outside be equipped with that clamping bolt connects on, lower flange, upper flange top connects the inner sealing gland that is provided with air filter, be provided with rubber gasket between sealing gland and the guide cylinder, the top is provided with erosion control refluence storehouse, and top, erosion control refluence storehouse is connected to the guard shield top, and the guide cylinder below is connected to erosion control current stabilization cover, have side opening on the erosion control current stabilization cover, guide rod passes erosion control current stabilization cover bottom.
Described erosion control refluence storehouse is a conical cavity, leaves the gap with the sealing gland top.
Described guard shield is movably installed in current stabilization tank body top, and leaves the gap.
Described seal cones tapering is 100 °～120 °.
Compared with prior art, the beneficial effect that the utility model had is: 1, ball float leads: floating by ball float promotes seal cones and seals, the rotation of ball float, difficult orientation have been avoided, switch is fast, cone seal has guaranteed sealing effect, the ball float below adds guide rod in addition, makes it all have leading role in the position, upper, middle and lower; 2, blowout prevention is effective: water has realized that through multiple tracks critical point resistances such as erosion control current stabilization cover, guide cylinder lower through-hole, ball float, seal cones, sealing gland, erosion control refluence storehouse, the following gaps of guard shield intake and exhaust are unimpeded and watertight.
Description of drawings
Fig. 1 is the utility model structure sectional view schematic representation.
Wherein: 1, guard shield 2, erosion control refluence storehouse 3, sealing gland 4, rubber gasket 5, upper flange 6, seal cones 7, lower flange 8, clamping bolt 9, ball float 10, current stabilization tank body 11, guide cylinder 12, guide cylinder lower through-hole 13, guide rod 14, erosion control current stabilization cover 15, air filter.
Fig. 1 is a most preferred embodiment of the present utility model, is described further below in conjunction with 1 pair of the utility model of accompanying drawing:
Embodiment
With reference to accompanying drawing 1:
Should anti-negative pressure control valve, by the guard shield 1 of outside and be installed on its inner erosion control refluence storehouse 2, sealing gland 3, rubber gasket 4, upper flange 5, seal cones 6, lower flange 7, clamping bolt 8, ball float 9, guide cylinder 11, air conducting tube lower through-hole 12, guide rod 13, erosion control current stabilization cover 14 and air filter 15 and form.Guard shield 1 is sleeved on current stabilization tank body 10 tops, and and 10 of current stabilization tank bodies leave the gap, ball float 9 is housed in the guide cylinder 11, ball float 9 tops are connected to seal cones 6, the bottom connects guide rod 13, seal cones 6 taperings are 120 °.Pack in the current stabilization tank body 10 in guide cylinder 11 lower ends, the below connects the erosion control current stabilization cover 14 that has side opening, and guide cylinder 11 bottoms in the erosion control current stabilization cover 14 have guide cylinder lower through-hole 12, and guide rod 13 passes erosion control current stabilization cover 14 bottoms; The upper and lower flange 5,7 that is connected by clamping bolt 8 is equipped with in outside, guide cylinder 11 upper end, and upper flange 5 tops connect sealing gland 3, are provided with rubber gasket 4 between sealing gland 3 and the guide cylinder 11; Air filter 15 is housed in the sealing gland 3, and sealing gland 3 tops are provided with erosion control refluence storehouse 2, and erosion control refluence storehouse 2 is a conical cavity, and top is connected to guard shield 1 top, and leave the gap with sealing gland 3 tops.
The seal cones tapering can be adjusted into 100 ° or 110 ° as required.
Working procedure is as follows:
When first or have a power failure, when water supply equipment is used in the back recovery of cutting off the water, the municipal tap water flows in the current stabilization tank body 10 by the road, constantly entering and increase with tap water in the current stabilization tank body 10, air in the current stabilization tank body 10 enters erosion control current stabilization cover 14 through the side opening of the erosion control current stabilization cover 14 of guide cylinder 11 bottoms, enter in the guide cylinder 11 by guide cylinder lower through-hole 12 then, when the water level in the current stabilization tank body 10 is elevated to ball float 9 positions, air is through ball float 9, space between seal cones 6 and the guide cylinder 11, air filter 15, sealing gland 3, erosion control refluence storehouse 2, gap between erosion control refluence storehouse 2 and the sealing gland 3, discharge in the gap at guard shield 1 and current stabilization tank body 10 tops, ball float 9 raises gradually because of buoyancy simultaneously, and upwards promote seal cones 6 risings until throttle down, with hydraulic pressure constantly to increase seal degree good more, prevented overflowing of water.
When user's water consumption during greater than the municipal tap water supply flow, hydraulic pressure, water levels in the current stabilization tank body 10 decrease, and water level is reduced to ball float 9 when following, and valve is opened in seal cones 6 declines on ball float 9 tops, thereby has prevented from negative pressure to occur in the current stabilization tank body 10.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (4)
1. anti-negative pressure control valve, comprise outside guard shield (1), ball float (9) and guide cylinder (11), ball float (9) is installed in the guide cylinder (11), pack in the current stabilization tank body (10) in guide cylinder (11) bottom, guide cylinder (11) bottom has guide cylinder lower through-hole (12), it is characterized in that: ball float (9) top is connected to seal cones (6), bottom vertical is provided with guide rod (13), outside, guide cylinder (11) upper end be equipped with that clamping bolt (8) connects on, lower flange (5,7), upper flange (5) top connects the sealing gland (3) that inside is provided with air filter (15), be provided with rubber gasket (4) between sealing gland (3) and the guide cylinder (11), the top is provided with erosion control refluence storehouse (2), top, erosion control refluence storehouse (2) is connected to guard shield (1) top, guide cylinder (11) below is connected to erosion control current stabilization cover (14), have side opening on the erosion control current stabilization cover (14), guide rod (13) passes erosion control current stabilization cover (14) bottom.
2. anti-negative pressure control valve according to claim 1 is characterized in that: described erosion control refluence storehouse (2) is a conical cavity, leaves the gap with sealing gland (3) top.
3. anti-negative pressure control valve according to claim 1 is characterized in that: described guard shield (1) is movably installed in current stabilization tank body (10) top, and leaves the gap.
4. anti-negative pressure control valve according to claim 1 is characterized in that: described seal cones (6) tapering is 100 °～120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205361836U CN201827496U (en) | 2010-09-16 | 2010-09-16 | Negative-pressure preventive control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205361836U CN201827496U (en) | 2010-09-16 | 2010-09-16 | Negative-pressure preventive control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827496U true CN201827496U (en) | 2011-05-11 |
Family
ID=43966030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205361836U Expired - Fee Related CN201827496U (en) | 2010-09-16 | 2010-09-16 | Negative-pressure preventive control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827496U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968081A (en) * | 2014-05-09 | 2014-08-06 | 江苏滔海机械制造有限公司 | Simple water seal valve in negative pressure liquid inlet state |
| CN106759670A (en) * | 2017-03-27 | 2017-05-31 | 天津宏捷安装工程有限公司 | A kind of anti-negative pressure controller |
| CN110566449A (en) * | 2019-08-23 | 2019-12-13 | 贵州乌江水电开发有限责任公司索风营发电厂 | Flow sensing device and hydroelectric pump |
-
2010
- 2010-09-16 CN CN2010205361836U patent/CN201827496U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968081A (en) * | 2014-05-09 | 2014-08-06 | 江苏滔海机械制造有限公司 | Simple water seal valve in negative pressure liquid inlet state |
| CN103968081B (en) * | 2014-05-09 | 2016-03-16 | 江苏滔海机械制造有限公司 | Simple and easy water seal valve under negative pressure feed liquor state |
| CN106759670A (en) * | 2017-03-27 | 2017-05-31 | 天津宏捷安装工程有限公司 | A kind of anti-negative pressure controller |
| CN110566449A (en) * | 2019-08-23 | 2019-12-13 | 贵州乌江水电开发有限责任公司索风营发电厂 | Flow sensing device and hydroelectric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20110916 |