CN217539748U - Low-resistance backflow preventer - Google Patents
Low-resistance backflow preventer Download PDFInfo
- Publication number
- CN217539748U CN217539748U CN202221308762.4U CN202221308762U CN217539748U CN 217539748 U CN217539748 U CN 217539748U CN 202221308762 U CN202221308762 U CN 202221308762U CN 217539748 U CN217539748 U CN 217539748U
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- Prior art keywords
- valve
- valve body
- clack
- valve rod
- channel
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000012423 maintenance Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000006872 improvement Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model provides a simple structure, a low resistance backflow preventer that convenient maintenance was changed, which comprises a valve body, inhalant canal and exhalant canal have been seted up to the valve body, the valve body is located inhalant canal and is equipped with first disk seat, the valve body is located exhalant canal and is equipped with the second disk seat, it is equipped with first valve clack to lie in first disk seat position in the valve body, the valve body is located the second valve seat position and is equipped with the second valve clack, be connected with the valve rod between first valve clack and the second valve clack, be equipped with elasticity non return spare and elasticity non return spare cover between first valve clack and the second valve seat and locate on the valve rod, the maintenance passageway has been seted up on the valve body, be equipped with through first block device on the valve body and be used for maintaining the inclosed sealed lid of passageway, be equipped with sealing device between valve body and the sealed lid, the valve rod passes through connecting device and is connected with first valve clack and second valve clack.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to low resistance backflow preventer.
Background
Along with the improvement of living standard of people and the promotion of urbanization process, tap water supply gradually extends from cities to small towns and new rural areas, and simultaneously, due to rapid development of industry, various pipe networks are arranged in a staggered mode more and more, sewage pipes, heating pipes, non-drinking water pipes and the like are distributed underground together with tap water supply pipes, and accidents that sewage flows back to the drinking water pipes happen occasionally, so that serious harm is brought to the health of people. The low-resistance backflow preventer is a hydraulic control combination device which strictly limits that pressure water in a pipeline can only flow in one direction and pressure cannot be lost, has the main function of preventing liquid backflow, is particularly used in a tap water pipeline to prevent sewage or other liquid polluted water from flowing backwards into the tap water pipeline, and provides guarantee for water safety of people.
The valve rod and the spring are used for a long time and soaked in water, so that the existing low-resistance backflow preventer is easy to damage, and the elasticity of the spring is easy to lose effect, so that the low-resistance backflow preventer is out of effect, and therefore, the low-resistance backflow preventer needs to be replaced, and the use cost is greatly improved.
SUMMERY OF THE UTILITY MODEL
Therefore, to foretell problem, the utility model provides a simple structure, convenient maintenance change a low resistance backflow preventer.
For realizing the above-mentioned purpose, the technical scheme of the utility model a low resistance backflow preventer is provided, the power distribution valve comprises a valve body, inhalant canal and exhalant canal have been seted up to the valve body, the valve body is located inhalant canal and is equipped with first disk seat, the valve body is located exhalant canal and is equipped with the second disk seat, it is equipped with first valve clack to lie in first disk seat position in the valve body, the valve body is located the second valve seat and is equipped with the second valve clack, be connected with the valve rod between first valve clack and the second valve clack, be equipped with elasticity non return spare and elasticity non return spare cover between first valve clack and the second valve seat and locate on the valve rod, the maintenance passageway has been seted up on the valve body, be equipped with through first block device on the valve body and be used for maintaining the inclosed sealed lid of passageway, be equipped with sealing device between valve body and the sealed lid, the valve rod passes through connecting device and is connected with first valve clack and second valve clack.
The further improvement is that: the connecting device is as follows: the valve rod comprises a first valve rod and a second valve rod, the first valve rod is in threaded connection with the second valve rod, a first channel is formed in the first valve clack, the first valve rod penetrates through the first channel, a first positioning device used for positioning the first valve rod in the first channel is arranged on the first valve clack, a second channel is formed in the second valve clack, the second valve rod penetrates through the second channel, and a second positioning device used for positioning the second valve rod in the second channel is arranged on the second valve clack.
The further improvement is that: the first positioning device is as follows: the first valve rod is locked on the first valve clack through a first bolt.
The further improvement is that: the second positioning device is: and the second valve rod is locked on the second valve clack through a second bolt.
The further improvement is that: the sealing device comprises a sealing gasket, the sealing gasket is provided with a sealing groove, the sealing gasket is arranged in the sealing groove, and an elastic part is arranged between the sealing gasket and the inner wall of the sealing groove.
The further improvement is that: the valve body is further provided with a cleaning channel for cleaning the interior of the valve body, the cleaning channel is communicated with the outside, and the valve body is provided with a blocking device for blocking the cleaning channel.
The further improvement is that: the blocking device is as follows: wash passageway female connection and have the end cap, be equipped with the sealing washer that prevents to reveal between end cap and the valve body.
The further improvement is that: the sealing cover is provided with a handle.
The utility model has the advantages and the beneficial effects that:
simple structure and convenient use. Can change valve rod and non return spring through opening sealed lid, be favorable to the long-term time and the maintenance of preventer. And can wash its inside, prevent by impurity corrosion, further improve its life, reduce the maintenance.
Drawings
Fig. 1 is a schematic view of a cut-open structure of a low resistance backflow preventer according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic structural diagram of embodiment a of the present invention.
Fig. 3 is an enlarged schematic structural diagram of embodiment B of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-fig. 3, a low resistance backflow preventer, includes valve body 1, inhalant canal 2 and exhalant canal 3 have been seted up to valve body 1, valve body 1 is located inhalant canal 2 and is equipped with first disk seat 11, valve body 1 is located exhalant canal 3 and is equipped with second disk seat 12, it is equipped with first valve clack 4 to lie in first disk seat 11 position in valve body 1, valve body 1 is located second disk seat 12 position and is equipped with second valve lamella 5, be connected with valve rod 6 between first valve clack 4 and the second valve lamella 5, be equipped with check spring 7 and check spring 7 cover between first valve clack 4 and the second valve seat 12 and locate on valve rod 6, the maintenance passageway has been seted up on valve body 1, be equipped with through the bolt lock on valve body 1 and be used for maintaining the inclosed sealed lid 8 of passageway, be equipped with sealing device between valve body 1 and the sealed lid 8, valve rod 6 is connected with first valve clack 4 and second valve clack 5 through connecting device.
Preferably, the connecting device is: the valve rod 6 comprises a first valve rod 6 and a second valve rod 6, the first valve rod 6 is in threaded connection with the second valve rod 6, a first channel 14 is formed in the first valve clack 4, the first valve rod 6 penetrates through the first channel 14, the first valve rod 6 is locked on the first valve clack 4 through a first bolt 13, the first valve rod 6 is positioned in the first channel 14, a second channel is formed in the second valve clack 5, the second valve rod 6 penetrates through the second channel, the second valve rod 6 is locked on the second valve clack 5 through a second bolt, and the second valve rod 6 is positioned in the second channel.
Preferably, the sealing device includes a sealing gasket 84, the sealing cover 8 is provided with a sealing groove 82, the sealing gasket 84 is disposed in the sealing groove 82, and a spring 83 is disposed between the sealing gasket 84 and the inner wall of the sealing groove 82. After installation, the spring 83 is compressed and has elasticity, so that the sealing gasket 84 can be better tightened and sealed, and water leakage can be better prevented.
In order to clear away the impurity in the valve body 1, prevent that it from corroding the spare part in valve body 1 and the valve body 1, improve the life of preventer, reduce the maintenance rate, still set up the washing passageway that is used for clearing up the inside of valve body 1 on the valve body 1, it is linked together with the outside to wash the passageway, it has end cap 9 to wash passageway female connection, be equipped with the sealing washer 10 that prevents to reveal between end cap 9 and the valve body 1.
In order to facilitate the taking up of the sealing cover 8, a handle 81 is provided on the sealing cover 8.
The working principle is as follows:
when the valve rod 6 or the check spring 7 needs to be replaced, the sealing cover 8 is detached, then the check spring 7 is pulled open, then the first bolt 13 and the second bolt are detached, the first valve rod 6 and the second valve rod 6 are detached after the first valve rod 6 and the second valve rod 6 are screwed, then the first valve rod 6, the second valve rod 6 and the check spring 7 can be taken out, then the new first valve rod 6, the new second valve rod 6 and the new check spring 7 are installed, and the installation can be completed. When the valve body 1 is to be cleaned, the sealing cover 8 is opened, then the plug 9 is taken down, jet flow cleaning is carried out on the interior of the valve body 1, and impurities flow out through the cleaning channel.
The foregoing shows and describes the basic principles and features of the present invention and their advantages, which should be understood by those skilled in the art, and it is not limited by the foregoing embodiments, but only by the illustrations presented in the foregoing embodiments and illustrations.
Claims (8)
1. The utility model provides a low resistance backflow preventer, includes the valve body, inhalant canal and exhalant canal have been seted up to the valve body, the valve body is located inhalant canal and is equipped with first disk seat, the valve body is located exhalant canal and is equipped with the second disk seat, it is equipped with first valve clack to lie in first disk seat position in the valve body, the valve body is located the second valve seat and is equipped with the second valve clack, be connected with the valve rod between first valve clack and the second valve clack, be equipped with elastic check spare and elastic check spare cover between first valve clack and the second valve seat and locate on the valve rod its characterized in that: the valve comprises a valve body and a valve rod, wherein the valve body is provided with a maintenance channel, the valve body is provided with a sealing cover used for sealing the maintenance channel through a first clamping device, a sealing device is arranged between the valve body and the sealing cover, and the valve rod is connected with a first valve clack and a second valve clack through a connecting device.
2. A low resistance backflow preventer as claimed in claim 1, wherein: the connecting device is as follows: the valve rod comprises a first valve rod and a second valve rod, the first valve rod is in threaded connection with the second valve rod, a first channel is formed in the first valve clack, the first valve rod penetrates through the first channel, a first positioning device used for positioning the first valve rod in the first channel is arranged on the first valve clack, a second channel is formed in the second valve clack, the second valve rod penetrates through the second channel, and a second positioning device used for positioning the second valve rod in the second channel is arranged on the second valve clack.
3. A low resistance backflow preventer as claimed in claim 2, wherein: the first positioning device is as follows: the first valve rod is locked on the first valve clack through a first bolt.
4. A low resistance backflow preventer as claimed in claim 2, wherein: the second positioning device is: and the second valve rod is locked on the second valve clack through a second bolt.
5. A low resistance backflow preventer as claimed in claim 1, wherein: the sealing device comprises a sealing gasket, the sealing gasket is provided with a sealing groove, the sealing gasket is arranged in the sealing groove, and an elastic part is arranged between the sealing gasket and the inner wall of the sealing groove.
6. A low resistance backflow preventer as claimed in claim 1, wherein: the valve body is further provided with a cleaning channel for cleaning the interior of the valve body, the cleaning channel is communicated with the outside, and the valve body is provided with a blocking device for blocking the cleaning channel.
7. A low resistance backflow preventer as claimed in claim 6, wherein: the blocking device is as follows: the cleaning channel is internally threaded with a plug, and a sealing ring for preventing leakage is arranged between the plug and the valve body.
8. A low resistance backflow preventer as claimed in claim 1, wherein: the sealing cover is provided with a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221308762.4U CN217539748U (en) | 2022-05-26 | 2022-05-26 | Low-resistance backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221308762.4U CN217539748U (en) | 2022-05-26 | 2022-05-26 | Low-resistance backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217539748U true CN217539748U (en) | 2022-10-04 |
Family
ID=83441794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221308762.4U Active CN217539748U (en) | 2022-05-26 | 2022-05-26 | Low-resistance backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217539748U (en) |
-
2022
- 2022-05-26 CN CN202221308762.4U patent/CN217539748U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |