CN100526568C - Vacuum destroying device for water supply system - Google Patents
Vacuum destroying device for water supply system Download PDFInfo
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- CN100526568C CN100526568C CNB2005100268641A CN200510026864A CN100526568C CN 100526568 C CN100526568 C CN 100526568C CN B2005100268641 A CNB2005100268641 A CN B2005100268641A CN 200510026864 A CN200510026864 A CN 200510026864A CN 100526568 C CN100526568 C CN 100526568C
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- supply system
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Abstract
The vacuum breaker for water supply system includes casing with ventilation hole, ventilation rack with small diaphragm for closing the ventilation port and repositioning spring for the small diaphragm, and non-return diaphragm on one other rack and for closing the annular water flow channel in the ventilation rack and provided with repositioning spring on a seat. The vacuum breaker operates on the principle that local high speed water flow is utilized to interlink the diaphragm. Compared with available vacuum breaker, the present invention has very low water flow pressure loss, and when it is used in flushing valve and other water supply and heating equipment, it has excellent flushing effect and maintained water flow pressure.
Description
Technical field:
The present invention relates to a kind of water system vacuum breaking device, can be widely used in the industries such as plumbing.
Background technology:
Often be easy to generate vacuum because of reason such as cut off the water in the water system, or be lower than atmospheric pressure, cause system's siphon liquid backflow phenomenon, severe patient may cause the pollution of water system, so national standard has proposed anti-siphon requirement to water system and relevant industries such as plumbing, in the prior art, relevant vacuum brake is for effectively anti-siphon, the system that guarantees does not again simultaneously leak, by an one way valve is set, utilize the characteristic of one way valve in whole cross-sectional flow area choked flow, realize the mode of sealing blow vent by the one way valve diaphragm that links, often cause the water flow pressure loss of system excessive, the present invention is reducing the water flow pressure loss and is guaranteeing that efficient vacuum destroys the invention of having done innovation aspect the anti-siphon.
Summary of the invention:
The purpose of this invention is to provide a kind of water system vacuum breaking device.The present invention solves the technical scheme that its problem adopts: in the housing 1 that has air vent, diaphragm frame 3 is stuck on the ventilation support 2, Small diaphragm-piece 4 is in diaphragm frame 3 belows, and slide bar 5 passes Small diaphragm-piece 4, Small diaphragm-piece back-moving spring 6, is inserted in the pilot hole on the ventilation support 2; Unidirectional diaphragm 7 is contained on the support 8, and unidirectional diaphragm 7 is pressed on the annular flow channel 13 of ventilation support, and back-moving spring 9 is between support 8 and spring base 10.Small diaphragm-piece 4 is positioned at the central authorities of whole tubing.Ventilation support air flue 11, middle air inlet port 12 and center-aisle 14 are arranged on the ventilation support 2.
Utilize water system pipeline center local high speed water jet impact interlock diaphragm principle.Wherein the Small diaphragm-piece spring force is less than unidirectional diaphragm return spring power, and ventilation support realizes that the external world is communicated with the system pipeline inner air, and designs an annular flow channel thus, by unidirectional diaphragm seal.Middle Small diaphragm-piece is having under certain water impact, promptly moves the sealing air inlet port, prevents to leak, and when not having current, little spring resets diaphragm, and air inlet port is in open mode.Beginning in pipe-line system has current to pass through, and the hypothesis current are enough little, being not enough to promote Small diaphragm-piece moves down when sealing air inlet port fully, because the Small diaphragm-piece spring force is less than unidirectional diaphragm return spring power, unidirectional diaphragm does not move down yet, and current can not be passed through by the ventilation support circular passage, can only flow through by middle small bore passage to enter downstream line, and the downstream line passage section is unlikely so that current overflow pipeline from the air inlet port overflow much larger than middle small bore.
The invention has the beneficial effects as follows: compare with existing vacuum brake, have relatively very low water flow pressure loss, when it was applied to plumbing such as flushing valve, water flow pressure was kept and is produced good developing result.
Description of drawings:
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the embodiment of the invention
The specific embodiment:
Accompanying drawing of the present invention has been explained the specific embodiment of this vacuum brake, as shown in Figure 1, comprise the housing 1 that has air vent, ventilation support 2 is buckled in the diaphragm frame 3 on the ventilation support, and the Small diaphragm-piece 4 below the diaphragm frame, the air inlet port 12 of Small diaphragm-piece on can the closed vent support is used for installing the slide bar 5 and the Small diaphragm-piece back-moving spring 6 of Small diaphragm-piece, and unidirectional diaphragm 7 is used for the annular flow channel 13 of closed vent support, the one-way membrane sheet is contained on the support 8, and back-moving spring 9 and spring base 10 are arranged.
When not supplying water in the system pipeline, at this moment spring 6 is propped diaphragm 4, housing 1 outer air enters in the pipe-line system via ventilation support air flue 11 and air inlet port 12, thereby destroy the issuable vacuum of pipe-line system, prevent siphon, when beginning in the pipe-line system to have current to pass through, suppose that current are enough little, be not enough to promote Small diaphragm-piece 4 and move down, simultaneously since spring 9 elastic force greater than spring 6, unidirectional diaphragm 7 does not move down yet, current can not be passed through by ventilation support circular passage 13, and can only enter downstream line by center-aisle 14, because center-aisle 14 cross sections are very little, and downstream line 15 passage sections are very big, and are unlikely so that current overflow pipeline from the air inlet port overflow.In system pipeline, it is maximum that water velocity distributes with the pipeline center, and water velocity constantly increases in pipeline, makes Small diaphragm-piece 4 be subjected to bigger impact force, and finally moves down and make air inlet port 12 sealings.When water flow pressure and speed increase to a certain degree, diaphragm 7 overcomes spring 9 and moves down, open ventilation support circular passage 13, at this moment current can enter downstream line by passage 13, obviously, this moment, the through-current capability of system strengthened greatly, in this course, when our setting spring 6 elastic force are enough little, and can lift diaphragm 4, then in the pipeline very during weep pressure, diaphragm 4 just can be closed air inlet port rapidly, and the elastic force of spring 9 suitably is set simultaneously, and the resistance to water-flow that overcomes spring 9 also can be enough little, under the situation of the passage section that guarantees circular passage 13, will be enough little by the water flow pressure loss of this system.
Claims (3)
1. vacuum destroying device for water supply system, it is characterized in that: in having the housing of air vent (1), diaphragm frame (3) is stuck on the ventilation support (2), Small diaphragm-piece (4) is in diaphragm frame (3) below, slide bar (5) passes Small diaphragm-piece (4), Small diaphragm-piece back-moving spring (6), is inserted in the pilot hole on the ventilation support (2); Unidirectional diaphragm (7) is contained on the support (8), and unidirectional diaphragm (7) is pressed on the annular flow channel (13) of ventilation support (2), and back-moving spring (9) is between support (8) and spring base (10).
2. according to the described vacuum destroying device for water supply system of claim 1, it is characterized in that: Small diaphragm-piece (4) is positioned at the central authorities of whole tubing.
3. according to the described vacuum destroying device for water supply system of claim 1, it is characterized in that: ventilation support air flue (11), middle air inlet port (12) and center-aisle (14) are arranged on the ventilation support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100268641A CN100526568C (en) | 2005-06-17 | 2005-06-17 | Vacuum destroying device for water supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100268641A CN100526568C (en) | 2005-06-17 | 2005-06-17 | Vacuum destroying device for water supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749493A CN1749493A (en) | 2006-03-22 |
| CN100526568C true CN100526568C (en) | 2009-08-12 |
Family
ID=36605130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100268641A Active CN100526568C (en) | 2005-06-17 | 2005-06-17 | Vacuum destroying device for water supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100526568C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2915968Y (en) * | 2006-06-08 | 2007-06-27 | 上海澳柯林水暖器材有限公司 | Anti-siphon device for flushing valve |
-
2005
- 2005-06-17 CN CNB2005100268641A patent/CN100526568C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1749493A (en) | 2006-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI KOLLER ELECTRONIC SCIENCE CO., LTD. Free format text: FORMER OWNER: SHANGHAI AOKELIN WATER HEATING EQUIPMENT CO., LTD. Effective date: 20080509 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20080509 Address after: Shanghai City, Pudong New Area No. 18 Jin Dian road building E post encoding: 201206 Applicant after: Shanghai Kohler Electronic Technology Co., Ltd. Address before: Building 18, No. 1080, Changyang Road, Shanghai, China: 200082 Applicant before: Aokelin Water Supply & Heating Equipment Co., Ltd., Shanghai |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |