CN204107164U - A kind of Novel filter power-cut overflow prevention device - Google Patents
A kind of Novel filter power-cut overflow prevention device Download PDFInfo
- Publication number
- CN204107164U CN204107164U CN201420439781.XU CN201420439781U CN204107164U CN 204107164 U CN204107164 U CN 204107164U CN 201420439781 U CN201420439781 U CN 201420439781U CN 204107164 U CN204107164 U CN 204107164U
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- CN
- China
- Prior art keywords
- valve
- power
- water intaking
- filter tank
- tank
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- 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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- Pipe Accessories (AREA)
Abstract
The utility model discloses a kind of Novel filter power-cut overflow prevention device, comprise filter tank, switch board, power gas circuit and air accumulator, described filter tank is provided with water intaking valve and outlet valve, water intaking valve and the outlet valve pneumatic control valve all for being controlled by power gas circuit, described switch board is provided with stand-by power supply, described air accumulator is provided with normally closed solenoid valve between power gas circuit, it is characterized in that: described water intaking valve is connected with pressure-reducing valve and expansion tank by pipeline.When filter tank power-cut overflow prevention device provided by the utility model makes power failure, water intaking valve and outlet valve are for remaining on full-gear, can not overflow when ensureing filter tank power-cut.
Description
Technical field
The utility model relates to a kind of water supplying unit, particularly a kind of Novel filter power-cut overflow prevention device.
Background technology
Filter tank water intaking valve for filtering adopts magnetic valve usually and outlet valve adopts operated pneumatic valve usually, and the operation principle of pneumatic control valve is: control aperture with 4mA ~ 20mA analog signals, corresponding 4mA complete shut-down, 20mA standard-sized sheet; Power gas circuit adopts air compressor machine produce compressed air and be provided with air accumulator in the loop.When water factory occur have a power failure time, water intaking valve because of power-off keep full-gear make filter tank continue water inlet; Outlet valve 4mA ~ 20mA analog signals becomes 0mA, and also have certain pressure due to air storage tank of air circuit, outlet valve cannot water outlet by all shutting, and very fast full water is overflowed by filter tank, and can cause flooding filter tank detection supersonic liquid level and take into account valve control device.
Summary of the invention
In order to solve the problem, the utility model provide a kind of ensure power-off after the Novel filter power-cut overflow prevention device that do not overflow of filter tank.
For achieving the above object, the technical solution of the utility model is: a kind of Novel filter power-cut overflow prevention device, comprise filter tank, switch board, power gas circuit and air accumulator, described filter tank is provided with water intaking valve and outlet valve, water intaking valve and the outlet valve pneumatic control valve all for being controlled by power gas circuit, described switch board is provided with stand-by power supply, and described air accumulator is provided with normally closed solenoid valve between power gas circuit, it is characterized in that: described water intaking valve is connected with pressure-reducing valve and expansion tank by pipeline.
Described pressure-reducing valve plays certain non-return effect in the duct, simultaneously in order to prevent the harm of water hammer, is provided with expansion tank, prevents from damaging pipeline and valve.Described expansion tank is that gasbag-type lands expansion tank, and its formation comprises air bag and tank body.
Described water intaking valve and outlet valve are pneumatic control valve, described switch board can control the work in filter tank and the switch of each valve, control valve still can control aperture with 4mA ~ 20mA analog signals, corresponding 4mA or following time complete shut-down, 20mA or more is standard-sized sheet, thus can realize the control of the permanent water level of constant speed better.
Described stand-by power supply can adopt ups power; Be closed condition during described normally closed solenoid valve non-transformer, gas circuit is cut off.
Operation principle of the present utility model is: when filter tank power-cut, stand-by power supply is temporarily powered to switch board, after switch board detects power cut signal, control filter tank water intaking valve and outlet valve reach maximum simultaneously, valve reach maximum after, cut off the power supply of normally closed solenoid valve between air accumulator to filter tank valve gas circuit again, normally closed solenoid valve turns to closed condition by connected state time charged, thus the gas circuit between air accumulator to filter tank valve is cut off completely, open the filter tank air bleeding valve be positioned in the gas circuit of filter tank again, airline pressure is reduced to operated pneumatic valve need minimum pressure below after close air bleeding valve, the stand-by power supply of cutting-off controlling cabinet again, just can keep the normal filtration state in filter tank and prevent filter tank overflow, due to when power-off, control valve has instantaneous closed condition, and water intaking valve there will be of short duration closedown, then hydraulic pressure can increase, at this moment to be reduced by hydraulic pressure by the pressure-reducing valve set up before water intaking valve and water stores in expansion tank, when after valve open, water enters filter tank from water intaking valve again.
The beneficial effects of the utility model are: by installing stand-by power supply, normally closed solenoid valve additional on the basis of original filter tank structure, and water intaking valve adopts control valve and sets up pressure-reducing valve and expansion tank, make when having a power failure, ensure filter tank normal filtration, there will not be overflow situation, and improve the control of permanent water level, even if having a power failure, Inlet and outlet water can not have big difference.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of Novel filter power-cut overflow prevention device, comprise filter tank, switch board, power gas circuit and air accumulator, filter tank is provided with water intaking valve and outlet valve, water intaking valve and the outlet valve pneumatic control valve all for being controlled by power gas circuit, be connected with pressure-reducing valve and expansion tank by pipeline before water intaking valve, described switch board is provided with stand-by power supply, ups power can be adopted, for temporarily powering to switch board when power down mode, air accumulator is provided with normally closed solenoid valve between power gas circuit, is closed condition during normally closed solenoid valve non-transformer, and gas circuit is cut off.
In normal condition, normally closed solenoid valve is charged, and magnetic valve keeps connected state, and filter tank airline pressure is normal, switch board power generation operation, filter tank water intaking valve, outlet valve normal regulating, the permanent water level work in filter tank; When filter tank power-cut, stand-by power supply temporarily powers now to switch board, after switch board detects power cut signal, control filter tank water intaking valve and outlet valve reach maximum simultaneously, valve reach maximum after, cut off the power supply of normally closed solenoid valve between air accumulator to filter tank valve gas circuit, the gas circuit at this time between air accumulator to filter tank valve is cut off completely.Open filter tank air bleeding valve again, airline pressure is reduced to operated pneumatic valve need minimum pressure below after close air bleeding valve, the stand-by power supply of cutting-off controlling cabinet again, due to when power-off, control valve has instantaneous closed condition, the of short duration closedown of water intaking valve, then hydraulic pressure can increase, at this moment by the pressure-reducing valve set up before water intaking valve and expansion tank hydraulic pressure reduced and can enter in expansion tank because hydraulic pressure increases water, play the effect of buffering and voltage stabilizing and avoid occurring that water hammer endangers, when after valve open, water enters filter tank from water intaking valve again.Such filter tank water intaking valve and outlet valve will be consistent under full-gear, thus ensure filter tank normal filtration, filter tank also would not overflow, also saves power supply simultaneously, does not need to use stand-by power supply always.
Described expansion tank is that gasbag-type lands expansion tank, be connected with the pipeline before water intaking valve, comprise air bag and tank body, gas is filled with in advance between air bag and tank body, make the air pressure in expansion tank consistent with hydraulic pressure, be in stable state, due to the of short duration closedown of water intaking valve, at this moment hydraulic pressure is greater than the air pressure in tank body, water can enter in tank body, and when water intaking valve reopens, hydraulic pressure slowly recovers normal, water in air bag can be extruded by gas and get back to pipeline, and expansion tank plays the effect of voltage stabilizing equally when normal use.
Foregoing, is only preferred embodiment of the present utility model, and not for limiting embodiment of the present utility model, those skilled in the art are according to design of the present utility model, and done appropriate adaptation or amendment, all should within protection domain of the present utility model.
Claims (2)
1. a Novel filter power-cut overflow prevention device, comprise filter tank, switch board, power gas circuit and air accumulator, described filter tank is provided with water intaking valve and outlet valve, water intaking valve and the outlet valve pneumatic control valve all for being controlled by power gas circuit, described switch board is provided with stand-by power supply, described air accumulator is provided with normally closed solenoid valve between power gas circuit, it is characterized in that: described water intaking valve is connected with pressure-reducing valve and expansion tank by pipeline, described expansion tank is that gasbag-type lands expansion tank, and gasbag-type lands expansion tank and comprises air bag and tank body.
2. Novel filter power-cut overflow prevention device according to claim 1, is characterized in that: described stand-by power supply is ups power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439781.XU CN204107164U (en) | 2014-08-06 | 2014-08-06 | A kind of Novel filter power-cut overflow prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439781.XU CN204107164U (en) | 2014-08-06 | 2014-08-06 | A kind of Novel filter power-cut overflow prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204107164U true CN204107164U (en) | 2015-01-21 |
Family
ID=52324527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420439781.XU Expired - Fee Related CN204107164U (en) | 2014-08-06 | 2014-08-06 | A kind of Novel filter power-cut overflow prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204107164U (en) |
-
2014
- 2014-08-06 CN CN201420439781.XU patent/CN204107164U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20190806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |