CN110332341A - A kind of backflow preventer - Google Patents
A kind of backflow preventer Download PDFInfo
- Publication number
- CN110332341A CN110332341A CN201910781828.8A CN201910781828A CN110332341A CN 110332341 A CN110332341 A CN 110332341A CN 201910781828 A CN201910781828 A CN 201910781828A CN 110332341 A CN110332341 A CN 110332341A
- Authority
- CN
- China
- Prior art keywords
- return mechanism
- ontology
- valve
- head loss
- irrigation control
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000002262 irrigation Effects 0.000 claims abstract description 18
- 238000003973 irrigation Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
Abstract
The invention discloses a kind of backflow preventers, including ontology, the first non-return mechanism and the second non-return mechanism are fixed in the middle part of ontology, first non-return mechanism, second non-return mechanism and body outer wall form intermediate cavity, testing agency is provided on ontology, testing agency includes catheter pressure, irrigation control valve and head loss sensor, catheter pressure one end is communicated with the inlet end of ontology, the catheter pressure other end is communicated by irrigation control valve with intermediate cavity, the water outlet of irrigation control valve is provided with protection valve, head loss sensor is fixed on the inside of intermediate cavity, head loss sensor is connected with controller.A kind of backflow preventer of the present invention using the above structure; structure is simple; there are two independent non-return mechanisms for tool; anti-backflow effect is more preferable; there is testing agency simultaneously; when reflux situation occurs for the second non-return mechanism, when detecting liquid reverse flow by head loss sensor, controller alarm opens simultaneously protection valve.
Description
Technical field
The present invention relates to a kind of supply equipments, more particularly to a kind of backflow preventer.
Background technique
Backflow preventer is a kind of equipment for effectivelying prevent Drinking Water pipeline reflux polluted source.Existing anti-backflow
Only be the anti-locking mechanism of simple single layer, and without corresponding alarm structure, prevent staff from find in time failure and
Maintenance.
Summary of the invention
The object of the present invention is to provide a kind of backflow preventers, and structure is simple, and there are two independent non-return mechanisms for tool, prevent
It is more preferable to flow backwards effect, while there is testing agency, when reflux situation occurs for the second non-return mechanism, passes through head loss sensor
When detecting liquid reverse flow, controller alarm opens simultaneously protection valve.
To achieve the above object, the present invention provides a kind of backflow preventer, including ontology, the ontology two sides are set respectively
It is equipped with inlet and outlet, is successively fixed with the first non-return mechanism and the second non-return mechanism in the middle part of the ontology, described first
Non-return mechanism, second non-return mechanism and body outer wall form intermediate cavity, are provided with testing agency on the ontology, described
Testing agency includes catheter pressure, irrigation control valve and head loss sensor, described catheter pressure one end and the ontology
Inlet end communicate, the catheter pressure other end is communicated by irrigation control valve with the intermediate cavity, water conservancy control
The water outlet of valve is provided with protection valve, and the head loss sensor is fixed on the inside of the intermediate cavity, the head damage
Lost sensor is connected with the controller being fixed on ontology.
Preferably, PLC controller, power supply adaptor and buzzer, the head loss are provided in the controller
Sensor, power supply adaptor and the buzzer are connected with the PLC controller.
Preferably, first non-return mechanism and the second non-return mechanism include valve plate, fixing sleeve, bracket and rebound bullet
Spring, the rebound spring are sheathed on the bracket, and described bracket one end passes through fixed plate, and the bracket other end is fixed on institute
It states on valve plate, the valve plate is set in the fixing sleeve, and the water inlet end diameter of the fixing sleeve is less than valve plate diameter.
Preferably, the irrigation control valve includes valve body, push plate, baffle and return spring, and the push plate passes through valve rod
It is fixedly connected with the baffle, the return spring is sheathed on the valve rod.
Preferably, the ontology, the first non-return mechanism, the second non-return mechanism and testing agency are stainless steel material.
Therefore, a kind of backflow preventer of the present invention using the above structure, structure is simple, and there are two independent non-return machines for tool
Structure, anti-backflow effect is more preferable, while having testing agency, when reflux situation occurs for the second non-return mechanism, passes through head loss
When sensor detects liquid reverse flow, controller alarm opens simultaneously protection valve.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is a kind of backflow preventer schematic diagram of internal structure of the present invention；
Fig. 2 is a kind of backflow preventer top view of the present invention；
Fig. 3 is irrigation control valve schematic diagram of internal structure of the present invention；
Fig. 4 is circuit diagram of the present invention.
Appended drawing reference
1, ontology；11, water inlet；12, water outlet；2, the second non-return mechanism；3, the first non-return mechanism；4, non-return mechanism；
41, fixing sleeve；42, valve plate；43 brackets；44, rebound spring；5, testing agency；51, catheter pressure；52, head loss senses
Device；53, irrigation control valve；531, push plate；532, return spring；533, valve rod；534, baffle；54, valve is protected；6, it controls
Device.
Specific embodiment
Embodiment
Fig. 1 is a kind of backflow preventer schematic diagram of internal structure of the present invention, and Fig. 2 is that a kind of backflow preventer of the present invention is overlooked
Figure, Fig. 3 are irrigation control valve schematic diagram of internal structure of the present invention, and Fig. 4 is circuit diagram of the present invention, as shown, one kind is fallen
Stream preventer includes ontology 1, and 1 two sides of ontology are respectively arranged with water inlet 11 and water outlet 12, and 1 middle part of ontology successively fixes two
Non-return mechanism 4, two non-return mechanisms 4 are respectively the first non-return mechanism 3 and the second non-return mechanism 2, and non-return mechanism 4 includes valve plate
42, fixing sleeve 41, bracket 43 and rebound spring 44, rebound spring 44 are sheathed on bracket 43, and 43 one end of bracket, which passes through, to be fixed
Plate, 43 other end of bracket are fixed on valve plate 42, and valve plate 42 is set in fixing sleeve 41, and the water inlet end diameter of fixing sleeve 41 is less than
42 diameter of valve plate, since hydraulic pressure pushes valve plate 42 open, realizes water by non-return mechanism 4, when water does not flow when water forward flow
Or when flowing backwards, since 44 elastic force of rebound spring and water pressure make valve plate 42 tightly be in contact with fixing sleeve 41, to realize
Water flow can only forward flow.
First non-return mechanism 3, the second non-return mechanism 2 and 1 outer wall of ontology form intermediate cavity, are provided with detection on ontology 1
Mechanism 5, testing agency 5 include catheter pressure 51, irrigation control valve 53 and head loss sensor 52,51 one end of catheter pressure
It is communicated with 11 end of water inlet of ontology 1,51 other end of catheter pressure is communicated by irrigation control valve 53 with intermediate cavity, water conservancy control
The water outlet of valve 53 is provided with protection valve 54, and head loss sensor 52 is fixed on the inside of intermediate cavity, head loss sensing
Device 52 is connected with the controller 6 being fixed on ontology 1.PLC controller, power supply adaptor and bee are provided in controller 6
Ring device, and head loss sensor 52, power supply adaptor and buzzer are connected with PLC controller.Irrigation control valve 53 wraps
Valve body, push plate 531, baffle 534 and return spring 532 are included, push plate 531 is fixedly connected by valve rod 533 with baffle 534, is returned
Position spring 532 is sheathed on valve rod 533, and when water forward flow, the water pressure of catheter pressure 51 is big, so that pushing push plate 531
Irrigation control valve 53 is closed, so that the water in intermediate cavity will not be by irrigation control valve 53, when second time locking mechanism 2 breaks down
When, water can flow backward in intermediate cavity, and head loss sensor 52 is normally closed type sensor, when water forward flow, normally closed type sensing
Device contact is opened, and when water is not flowed or flow backwards, normally closed type sensor contact is closed, and PLC controls and receives normally closed type sensor
Shutdown signal after, PLC controller controls corresponding relay, starting buzzer warning and opens protection valve 54, this implementation
Example protection valve 54 is solenoid valve.Ontology 1, the first non-return mechanism 3, the second non-return mechanism 2 and testing agency 5 are stainless steel
Material complies fully with sanitary standard for drinking water.
Therefore, a kind of backflow preventer of the present invention using the above structure, structure is simple, and there are two independent non-return machines for tool
Structure, anti-backflow effect is more preferable, while having testing agency, when reflux situation occurs for the second non-return mechanism, passes through head loss
When sensor detects liquid reverse flow, controller alarm opens simultaneously protection valve.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited,
Although the present invention is described in detail with reference to preferred embodiments, those skilled in the art should understand that: its according to
So can be with modification or equivalent replacement of the technical solution of the present invention are made, and these modifications or equivalent replacement cannot also make to repair
Technical solution after changing is detached from the spirit and scope of technical solution of the present invention.
Claims (5)
1. a kind of backflow preventer, including ontology, the ontology two sides are respectively arranged with inlet and outlet, and feature exists
In: the first non-return mechanism and the second non-return mechanism, first non-return mechanism, described second are successively fixed in the middle part of the ontology
Non-return mechanism and body outer wall form intermediate cavity, are provided with testing agency on the ontology, the testing agency includes pressure
Conduit, irrigation control valve and head loss sensor, described catheter pressure one end are communicated with the inlet end of the ontology, institute
It states the catheter pressure other end and is communicated by irrigation control valve with the intermediate cavity, the water outlet of the irrigation control valve is provided with guarantor
Valve is protected, the head loss sensor is fixed on the inside of the intermediate cavity, the head loss sensor and is fixed on this
Controller on body is connected.
2. a kind of backflow preventer according to claim 1, it is characterised in that: be provided with PLC control in the controller
Device, power supply adaptor and buzzer, the head loss sensor, power supply adaptor and the buzzer with it is described
PLC controller is connected.
3. a kind of backflow preventer according to claim 1, it is characterised in that: first non-return mechanism and the second non-return
Mechanism includes valve plate, fixing sleeve, bracket and rebound spring, and the rebound spring is sheathed on the bracket, the bracket
One end passes through fixed plate, and the bracket other end is fixed on the valve plate, and the valve plate is set in the fixing sleeve, described
The water inlet end diameter of fixing sleeve is less than valve plate diameter.
4. a kind of backflow preventer according to claim 1, it is characterised in that: the irrigation control valve includes valve body, pushes away
Plate, baffle and return spring, the push plate are fixedly connected by valve rod with the baffle, and the return spring is sheathed on described
On valve rod.
5. a kind of backflow preventer according to claim 1, it is characterised in that: the ontology, the first non-return mechanism, second
Non-return mechanism and testing agency are stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781828.8A CN110332341A (en) | 2019-08-23 | 2019-08-23 | A kind of backflow preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781828.8A CN110332341A (en) | 2019-08-23 | 2019-08-23 | A kind of backflow preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110332341A true CN110332341A (en) | 2019-10-15 |
Family
ID=68150192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910781828.8A Pending CN110332341A (en) | 2019-08-23 | 2019-08-23 | A kind of backflow preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110332341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212059A (en) * | 2020-10-19 | 2021-01-12 | 诸暨企创网络科技有限公司 | Backflow prevention electromagnetic valve with pipeline pressure detection function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258989Y (en) * | 2008-09-17 | 2009-06-17 | 马戌寰 | Electric backflow preventer |
| CN102486237A (en) * | 2010-12-01 | 2012-06-06 | 刘永 | Backflow preventer with built-in filter screen and no external piping |
| CN204647445U (en) * | 2015-03-17 | 2015-09-16 | 冈野集团有限公司 | A kind of cross flow check valve |
| CN105371264A (en) * | 2015-11-24 | 2016-03-02 | 佛山高富中石油燃料沥青有限责任公司 | Device for preventing boiler steam from flowing back |
| CN209100759U (en) * | 2018-11-30 | 2019-07-12 | 天津市国威给排水设备制造有限公司 | A kind of backflow preventer |
| CN210344407U (en) * | 2019-08-23 | 2020-04-17 | 德尔保定智能流体有限公司 | Backflow preventer |
-
2019
- 2019-08-23 CN CN201910781828.8A patent/CN110332341A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258989Y (en) * | 2008-09-17 | 2009-06-17 | 马戌寰 | Electric backflow preventer |
| CN102486237A (en) * | 2010-12-01 | 2012-06-06 | 刘永 | Backflow preventer with built-in filter screen and no external piping |
| CN204647445U (en) * | 2015-03-17 | 2015-09-16 | 冈野集团有限公司 | A kind of cross flow check valve |
| CN105371264A (en) * | 2015-11-24 | 2016-03-02 | 佛山高富中石油燃料沥青有限责任公司 | Device for preventing boiler steam from flowing back |
| CN209100759U (en) * | 2018-11-30 | 2019-07-12 | 天津市国威给排水设备制造有限公司 | A kind of backflow preventer |
| CN210344407U (en) * | 2019-08-23 | 2020-04-17 | 德尔保定智能流体有限公司 | Backflow preventer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212059A (en) * | 2020-10-19 | 2021-01-12 | 诸暨企创网络科技有限公司 | Backflow prevention electromagnetic valve with pipeline pressure detection function |
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