CN204716518U - Electric diaphragm pump protective system - Google Patents
Electric diaphragm pump protective system Download PDFInfo
- Publication number
- CN204716518U CN204716518U CN201520389851.XU CN201520389851U CN204716518U CN 204716518 U CN204716518 U CN 204716518U CN 201520389851 U CN201520389851 U CN 201520389851U CN 204716518 U CN204716518 U CN 204716518U
- Authority
- CN
- China
- Prior art keywords
- contactor
- diaphragm pump
- coil
- electric diaphragm
- output terminal
- 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.)
- Active
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of electric diaphragm pump protective system, comprise power switch, the first contactor, the second contactor, enable switch and pressure transducer, after three phase mains series-connection power supplies switch, the first contactor, be electrically connected to the supply terminals of electric diaphragm pump; One phase output terminal parallel connection electrical connection first terminal of coil of the first contactor, the first terminal of the coil of the second contactor of power switch; Another phase output terminal parallel connection electrical connection the normally-closed contact input end of the second contactor, input end of pressure transducer of power switch, second terminal of the coil of described second contactor of output terminal electrical connection of pressure transducer, the normally opened contact input end of the normally-closed contact output terminal electrical connection enable switch of the second contactor, the normally opened contact output terminal of enable switch is electrically connected the second terminal of the coil of the first contactor.Electric diaphragm pump protective system of the present utility model, can prevent the barrier film of electric diaphragm pump from damaging because of overload superpressure.
Description
Technical field
The utility model relates to diaphragm pump technical field, specifically, relates to a kind of electric diaphragm pump protective system.
Background technique
Diaphragm pump is the one of reciprocating pump, and diaphragm pump is separated into not connected two-part by diaphragm pump elastic film, anti-corrosive rubber or elastic sheet metal, is respectively to be transferred liquid and the region of post existence of living.Like this, live post not with the liquid comes into contact of conveying, the medium reciprocating through homonymy of post of living is delivered on barrier film, makes diaphragm pump also reciprocating, thus realizes being transferred liquid and suck through ball shutter and discharge.Be exactly ball shutter with the unique parts being transferred liquid comes into contact in diaphragm pump, this is easy to make the form of not liquid body infringement.Therefore, in the industrial production, diaphragm pump is mainly for delivery of corrosive liquids or the liquid containing suspended solid.
At present, the electric diaphragm pump that industrial and mining enterprise use in the course of the work, often there is the too large or silt of concentration of medium, sludge sucks phenomenon, overburdening is caused to motor, overload superpressure is caused to the barrier film of electric diaphragm pump, thus damage the barrier film of motor, damage electric diaphragm pump, make electric diaphragm pump amount of maintenance large.Such as when electric diaphragm pump is used in the pressure filter front end of powder industry, pressure filter is in order to compress carborundum powder, along with pressure filter is to the press filtration of carborundum powder, moisture in carborundum powder is deviate from gradually, and along with the minimizing of the moisture in carborundum powder, full silicon carbide materials pressed gradually by pressure filter, the increasing pressure of pressure filter is large, the pressure that electric diaphragm pump is born is also increasing, if exceed the pressure that the barrier film in electric diaphragm pump can bear, the barrier film in electric diaphragm pump is easily damaged.
Model utility content
Technical problem to be solved in the utility model is: provide a kind of electric diaphragm pump protective system, can prevent the barrier film of electric diaphragm pump from damaging because of overload superpressure.
For solving the problems of the technologies described above, the technical solution of the utility model is:
Electric diaphragm pump protective system, comprise power switch, the first contactor, the second contactor, enable switch and the pressure transducer for detecting electric diaphragm pump internal pressure, three phase mains is connected and is electrically connected to the supply terminals of electric diaphragm pump after described power switch, described first contactor;
One phase output terminal parallel connection electrical connection first terminal of coil of described first contactor and the first terminal of the coil of described second contactor of described power switch;
Another phase output terminal parallel connection electrical connection normally-closed contact input end of described second contactor and input end of described pressure transducer of described power switch, second terminal of the coil of described second contactor of output terminal electrical connection of described pressure transducer, the normally-closed contact output terminal of described second contactor is electrically connected the normally opened contact input end of described enable switch, the second terminal of the coil of described first contactor of normally opened contact output terminal electrical connection of described enable switch.
Preferably, described enable switch is self-resetting switch;
Second terminal of the coil of described first contactor of auxiliary contact input end electrical connection of described first contactor, the auxiliary contact output terminal of described first contactor is electrically connected the normally opened contact input end of described enable switch.
Preferably, described power switch is air-break switch.
After have employed technique scheme, the beneficial effects of the utility model are:
The utility model provides a kind of electric diaphragm pump protective system; after power switch is closed; press enable switch; a phase power supply in three phase mains is connected to the first terminal of the coil of the first contactor; another phase power supply in three phase mains is electrically connected to the second terminal of the coil of the first contactor after the second contactor and enable switch, and the coil of the second contactor sensor that is stressed controls, thus starts the first contactor; electric diaphragm pump is energized, normally works.And when electric diaphragm pump internal pressure exceedes restriction, the output terminal output signal of pressure transducer, make the coil electricity of the second contactor, the normally-closed contact of the second contactor disconnects, thus disconnects the coil power of the first contactor, and the first contactor is disconnected, disconnect the power supply of electric diaphragm pump, electric diaphragm pump is quit work, and the barrier film that effectively prevent electric diaphragm pump damages because of overload superpressure, extends the working life of electric diaphragm pump.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the principle schematic of the utility model embodiment one;
Fig. 2 is the principle schematic of the utility model embodiment two;
In figure: 1, power switch; 2, the first contactor; 3, electric diaphragm pump; 4, enable switch; 5, the second contactor; 6, pressure transducer.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment one
With reference to Fig. 1; the electric diaphragm pump protective system of the present embodiment; comprise power switch 1, first contactor 2, second contactor 5, enable switch 4 and pressure transducer 6, after three phase mains series-connection power supplies switch 1, first contactor 2, be electrically connected to the supply terminals of electric diaphragm pump 3.The Pressure testing position of pressure transducer 6 is located in electric diaphragm pump 3, for detecting electric diaphragm pump 3 internal pressure.
One phase output terminal parallel connection electrical connection first terminal of coil of the first contactor 2, the first terminal of the coil of the second contactor 5 of power switch 1.
Another phase output terminal parallel connection electrical connection the normally-closed contact input end of the second contactor 5, input end of pressure transducer 6 of power switch 1, the output terminal of pressure transducer 6 is electrically connected the second terminal of the coil of the second contactor 5, the normally opened contact input end of the normally-closed contact output terminal electrical connection enable switch 4 of the second contactor 5, the normally opened contact output terminal of enable switch 4 is electrically connected the second terminal of the coil of the first contactor 2.
Wherein, enable switch 4 is self-supporting switch; Power switch 1 is air-break switch.
The electric diaphragm pump protective system of the present embodiment, after power switch 1 is closed, press enable switch 4, a phase power supply in three phase mains is connected to the first terminal of the coil of the first contactor 2, another phase power supply in three phase mains is electrically connected to the second terminal of the coil of the first contactor 2 after the second contactor 5 and enable switch 4, the coil of the second contactor 5 sensor 6 that is stressed controls, when electric diaphragm pump 3 internal pressure does not exceed limit value, the contact of pressure transducer 6 disconnects, the output end output signal of pressure transducer 6, now, the coil not conducting of the second contactor 5, the normally-closed contact input end of the second contactor 5 is communicated with normally-closed contact output terminal, make the coil conducting of the first contactor 2, thus start the first contactor 2, electric diaphragm pump 3 is energized, normal work.And when electric diaphragm pump 3 internal pressure exceedes restriction, the output terminal output signal of pressure transducer 6, make the coil electricity of the second contactor 5, the normally-closed contact of the second contactor 5 disconnects, thus disconnects the coil power of the first contactor 2, and the first contactor 2 is disconnected, disconnect the power supply of electric diaphragm pump 3, electric diaphragm pump 3 is quit work, and the barrier film that effectively prevent electric diaphragm pump 3 damages because of overload superpressure, extends the working life of electric diaphragm pump 3.
Embodiment two
With reference to Fig. 2; the electric diaphragm pump protective system of the present embodiment; comprise power switch 1, first contactor 2, second contactor 5, enable switch 4 and pressure transducer 6, after three phase mains series-connection power supplies switch 1, first contactor 2, be electrically connected to the supply terminals of electric diaphragm pump 3.The Pressure testing position of pressure transducer 6 is located in electric diaphragm pump 3, for detecting electric diaphragm pump 3 internal pressure.
One phase output terminal parallel connection electrical connection first terminal of coil of the first contactor 2, the first terminal of the coil of the second contactor 5 of power switch 1.
Another phase output terminal parallel connection electrical connection the normally-closed contact input end of the second contactor 5, input end of pressure transducer 6 of power switch 1, the output terminal of pressure transducer 6 is electrically connected the second terminal of the coil of the second contactor 5, the normally opened contact input end of the normally-closed contact output terminal electrical connection enable switch 4 of the second contactor 5, the normally opened contact output terminal of enable switch 4 is electrically connected the second terminal of the coil of the first contactor 2.
Wherein, enable switch 4 is self-resetting switch; The auxiliary contact input end of the first contactor 2 is electrically connected the second terminal of the coil of the first contactor 2, and the normally opened contact input end of the auxiliary contact output terminal electrical connection enable switch 4 of the first contactor 2, is formed and start self-hold circuit.
In the present embodiment, power switch 1 adopts air-break switch.
The above is the citing of the utility model preferred forms, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (3)
1. electric diaphragm pump protective system, it is characterized in that: comprise power switch, the first contactor, the second contactor, enable switch and the pressure transducer for detecting electric diaphragm pump internal pressure, three phase mains is connected and is electrically connected to the supply terminals of electric diaphragm pump after described power switch, described first contactor;
One phase output terminal parallel connection electrical connection first terminal of coil of described first contactor and the first terminal of the coil of described second contactor of described power switch;
Another phase output terminal parallel connection electrical connection normally-closed contact input end of described second contactor and input end of described pressure transducer of described power switch, second terminal of the coil of described second contactor of output terminal electrical connection of described pressure transducer, the normally-closed contact output terminal of described second contactor is electrically connected the normally opened contact input end of described enable switch, the second terminal of the coil of described first contactor of normally opened contact output terminal electrical connection of described enable switch.
2. electric diaphragm pump protective system as claimed in claim 1, is characterized in that: described enable switch is self-resetting switch;
Second terminal of the coil of described first contactor of auxiliary contact input end electrical connection of described first contactor, the auxiliary contact output terminal of described first contactor is electrically connected the normally opened contact input end of described enable switch.
3. electric diaphragm pump protective system as claimed in claim 1 or 2, is characterized in that: described power switch is air-break switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520389851.XU CN204716518U (en) | 2015-06-08 | 2015-06-08 | Electric diaphragm pump protective system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520389851.XU CN204716518U (en) | 2015-06-08 | 2015-06-08 | Electric diaphragm pump protective system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716518U true CN204716518U (en) | 2015-10-21 |
Family
ID=54315519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520389851.XU Active CN204716518U (en) | 2015-06-08 | 2015-06-08 | Electric diaphragm pump protective system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716518U (en) |
-
2015
- 2015-06-08 CN CN201520389851.XU patent/CN204716518U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2012030963A3 (en) | Overvoltage protection for ac power source | |
| CN204716518U (en) | Electric diaphragm pump protective system | |
| CN105116928A (en) | Novel water tank automatic pumping controller | |
| CN104456973A (en) | Hot water return device and control method thereof | |
| EP2840584A3 (en) | Capacitive driven normal relay emulator using voltage boost | |
| CN204575681U (en) | Insulating material insulating property detector guard warning circuit | |
| CN204738952U (en) | Reation kettle automatic protection device of pump of unloading | |
| CN203488388U (en) | Submersible pump wireless remote control device with water level detection function | |
| CN204215027U (en) | A kind of power source aging system | |
| CN106921144A (en) | Deep water pump water shortage automatic stop arrangement | |
| CN206991491U (en) | Cable theft-prevention drives alarm | |
| CN104124833A (en) | Water leaking outage submersible pump | |
| CN202906463U (en) | Two-wire-system transmitter positive/negative pole recognition and protection device | |
| CN204122413U (en) | The special dust of a kind of crane detects and dust pelletizing system | |
| CN203151418U (en) | Zoom regulating controller | |
| CN204407398U (en) | A kind of cell both positive and negative polarity connected structure | |
| CN204458289U (en) | A kind of suction pump | |
| CN104324910A (en) | Dust detecting and dust removing system special for crane | |
| CN103728033A (en) | Alarm device used for switch cabinet bus temperature rise | |
| CN204067617U (en) | Earthing device | |
| CN203312770U (en) | Simple industrial wastewater transfer pump protection circuit | |
| CN103334912B (en) | Pressure gauge with electric contact control circuit | |
| CN104808704B (en) | Water control system on remote auto | |
| CN203362479U (en) | Electric contact pressure gauge control circuit | |
| CN203981528U (en) | A kind of instrument that detects solution cleanliness factor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |