CN207899074U - A kind of back-flushing filtering device - Google Patents

A kind of back-flushing filtering device Download PDF

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Publication number
CN207899074U
CN207899074U CN201820129844.XU CN201820129844U CN207899074U CN 207899074 U CN207899074 U CN 207899074U CN 201820129844 U CN201820129844 U CN 201820129844U CN 207899074 U CN207899074 U CN 207899074U
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pipe
filter
blow
regulating valve
outlet
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CN201820129844.XU
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冯志佳
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Guangzhou Jishuo Agricultural Science And Technology Development Co Ltd
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Guangzhou Jishuo Agricultural Science And Technology Development Co Ltd
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Abstract

The utility model discloses a kind of back-flushing filtering device, including first filter and the second filter, inhalant region, filtering area and exhalant region are disposed in first filter;Inhalant region is connected with water inlet pipe and the first blow-off pipe, and exhalant region is connected with the first outlet pipe, and filtering area is provided with by-pass filtration net, compression spring, pressure sensitive switch and activated charcoal strainer along water (flow) direction is sequentially connected;The outlet of first blow-off pipe connects the second filter, is provided with the second blow-off pipe and the second outlet pipe on the second filter, the outlet of the second outlet pipe is connected on water inlet pipe;The first suction pump is provided on second outlet pipe;Second filter is internally provided with secondary filtration net, and the end face that secondary filtration net is located at first blow-off pipe one end is inclined surface, and the second blow-off pipe is located at corresponding second filter of inclined surface least significant end;Exhalant region is also connected with the second suction pump by pipeline.The utility model is simple in structure, and good filtration effect has saved water resource, saves cost.

Description

A kind of back-flushing filtering device
Technical field
The utility model is related to sewage water filtration technical fields, and in particular to a kind of back-flushing filtering device.
Background technology
Water filter is widely used in metallurgy, chemical industry, oil, papermaking, medicine, food, mining, electric power, city water field. Such as industrial wastewater, the filtering of recirculated water, the regeneration of emulsion, waste oil filtration treatment, the continuous casting water system of metallurgy industry, blast furnace Water system, hot rolling high-pressure water descaling system.When its operation principle is filter work, water to be filtered is flowed by water inlet, Strainer is flowed through, carries out process cycles by exporting into the pipeline needed for access customer, the granule foreign in water is trapped in strainer Portion.So continuous cycle, the particle being retained down is more and more, and the rate of filtration is slower and slower, and the sewage of import still source Source constantly enters, and filter opening can be smaller and smaller, and pressure difference is thus generated between import and export, needs to clean strainer at this time, restore The rate of filtration.
The water filter method for self-cleaning being often used at present is washed using intelligent pressure/differential control, timing controlled automatic backflushing Strainer.When filter inlet outlet pressure differential reaches setting time up to setting value or timer, electric operated control box sends out signal driving Valve rotates, while blowdown valve is opened.At this moment flow is forced to enter on the outside of filter cylinder from the entrance sector hole of filtering net cylinder and be pressed from both sides with shell Layer reversely rinses the impurity being adhered on mesh on the outside of strainer, achievees the purpose that clean filter screen, imports and exports and press when filter Difference is restored normally or after timer setting time, and motor stalls, electric blowdown valve is closed.This method there are the problem of Impulse force is not big enough when being current scour strainer, it is difficult to wash away clean.Another problem is that the water of backwash is directly arranged from sewage draining exit Go out, causes to waste.
Utility model content
In view of the above-mentioned problems, the utility model proposes one kind to repeatedly filter, good filtration effect can also rinse filter The back-flushing filtering device of net.
The technical solution of the utility model is:A kind of back-flushing filtering device, including first filter and the second filter, Inhalant region, filtering area and exhalant region are disposed in the first filter;The inhalant region is connected with water inlet pipe and first Blow-off pipe, exhalant region are connected with the first outlet pipe, and filtering area is provided with by-pass filtration net, pressure along water (flow) direction is sequentially connected Spring, pressure sensitive switch and activated charcoal strainer;It is respectively arranged with first on the water inlet pipe, the first blow-off pipe and the first outlet pipe Regulating valve, the second regulating valve and third regulating valve;
The outlet of first blow-off pipe connects the second filter, and the second blow-off pipe and second are provided on the second filter The outlet of outlet pipe, the second outlet pipe is connected on the water inlet pipe between the first regulating valve and first filter;Described second goes out The first suction pump is provided on water pipe, the water outlet of the second outlet pipe is provided with the 4th regulating valve;Second filter it is interior Portion is provided with secondary filtration net, and end face that secondary filtration net is located at first blow-off pipe one end is to incline with horizontal plane setting at an acute angle Inclined-plane, the second blow-off pipe are located at corresponding second filter of inclined surface least significant end, and the 5th tune is provided on the second blow-off pipe Save valve;
The exhalant region is also connected with the second suction pump by pipeline, and the discharge outlet of the second suction pump is connected to by pipeline On the first outlet pipe between third regulating valve and first filter.
It may further be preferable that being provided with third filter between second suction pump and the first outlet pipe.
Third filter can be for re-filtering to the water come out from the second suction pump, improves the cleannes of water again.
It is even furthermore preferable that the third filter is Y-type pipe filter.
Y-type pipe filter advanced structure resistance is small, flushing facilitate it is through-flow quickly therefore the pressure loss is small, pollution resistance is strong, row Slag is convenient, for filtering out the impurity in sewage, then is used, using water wisely.
It is even furthermore preferable that the pressure sensitive switch is connected with controller, controller be also connected with first regulating valve, Second regulating valve, third regulating valve, the 4th regulating valve, the 5th regulating valve, the first suction pump and the second suction pump.
It is controlled using the same controller, is conveniently automatically controlled.
It is even furthermore preferable that there are two compression springs for the filtering area setting, and each compression spring is all connected with one A pressure sensitive switch.
Two compression springs while stress can maintain balance when stress, keep the stability of by-pass filtration net.
The utility model has the beneficial effects that:
Usually water enters inhalant region from water inlet pipe, exhalant region is entered after by-pass filtration net and activated charcoal strainer, so It is flowed out afterwards from the first outlet pipe.When the impurity in inhalant region reaches certain degree, by-pass filtration net stress is to activated carbon mistake Strainer side is moved, compressed spring forced compression, and pressure sensitive switch stress closes the first regulating valve afterwards to a certain extent, opens second Regulating valve, impurity are flowed into along the first blow-off pipe along the second filter, and remaining moisture flows into the through secondary filtration net in impurity Tow filtrator lower part again flows into water inlet pipe under the action of the first suction pump, and the impurity in the second filter is then from second row Dirty pipe discharges.Process worked after certain time, can open the second suction pump, under the suction of the second suction pump, Flow velocity increases, and also greatly increases, can rapidly sweep away the impurity adhered in activated charcoal strainer to the impulse force of activated charcoal strainer, Then the first outlet pipe is flowed into after the filtering of third filter.
First regulating valve, the second regulating valve, third regulating valve, the 4th regulating valve, the 5th regulating valve, the first suction pump and The convenient automatic or remote control of two suction pumps, improves the degree of automation and flexible performance, and water quality passes through by-pass filtration net and work The double medium filtration of property charcoal filter screen, ensure that the clear of water quality.Impurity again passes by the second filter, reduces the waste of water, The end face that secondary filtration net is located at first blow-off pipe one end is inclined surface with horizontal plane setting at an acute angle, and impurity is facilitated to flow to the Two blow-off pipes, easy cleaning.The setting of second suction pump can clean activated charcoal strainer, activated carbon can be made to filter Net keeps best filter effect.Overall structure is simple, and good filtration effect also as save water resource, saves cost.
Description of the drawings
Fig. 1 is a kind of schematic diagram of back-flushing filtering device of the utility model.
Reference numeral:1- first filters, the second filters of 2-, 3- water inlet pipes, the first blow-off pipes of 4-, 5- first are discharged Pipe, 6- by-pass filtration nets, 7- compression springs, 8- pressure sensitive switch, 9- activated charcoal strainers, the first regulating valves of 10-, 11- second are adjusted Section valve, 12- third regulating valves, the second blow-off pipes of 13-, the second outlet pipes of 14-, the first suction pumps of 15-, the 4th regulating valves of 16-, 17- secondary filtration nets, the 5th regulating valves of 18-, the second suction pumps of 19-, the second suction pumps of 20-.
Specific implementation mode
The technical solution of the utility model is described in detail below, it should be noted that following is only this practicality Novel preferred embodiment is not departing from the concept of the present invention for those of ordinary skill in the art Under the premise of, various modifications and improvements can be made, these should belong to the scope of protection of the utility model.
As shown in Figure 1, a kind of back-flushing filtering device, including first filter 1 and the second filter 2, first mistake Inhalant region, filtering area and exhalant region are disposed in filter 1;The inhalant region is connected with water inlet pipe 3 and the first blow-off pipe 4, Exhalant region is connected with the first outlet pipe 5, and filtering area is provided with by-pass filtration net 6, compression spring along water (flow) direction is sequentially connected 7, pressure sensitive switch 8 and activated charcoal strainer 9, by-pass filtration net are located at inhalant region one end, and activated charcoal strainer is located at exhalant region one End;The first regulating valve 10, the second regulating valve 11 are respectively arranged on the water inlet pipe 3, the first blow-off pipe 4 and the first outlet pipe 5 With third regulating valve 12;
The outlet of first blow-off pipe 4 connects the second filter 2, and the second blow-off pipe 13 is provided on the second filter 2 With the second outlet pipe 14, the outlet of the second outlet pipe 14 is connected to the water inlet pipe 3 between the first regulating valve 10 and first filter 1 On;The first suction pump 15 is provided on second outlet pipe 14, the water outlet of the second outlet pipe 14 is provided with the 4th regulating valve 16;Second filter 2 is internally provided with secondary filtration net 17, and secondary filtration net 17 is located at 4 one end of the first blow-off pipe End face is the inclined surface with horizontal plane setting at an acute angle, and the second blow-off pipe 13 is located at corresponding second filtering of inclined surface least significant end At device 2, the 5th regulating valve 18 is provided on the second blow-off pipe 13;
The exhalant region is also connected with the second suction pump 19 by pipeline, and the discharge outlet of the second suction pump 19 is connected by pipeline It is connected on the first outlet pipe 5 between third regulating valve 12 and first filter 1.
Preferably, it is provided with third filter 20 between second suction pump, 19 and first outlet pipe 5.
Preferably, the third filter 20 is Y-type pipe filter.
Preferably, the pressure sensitive switch 8 is connected with controller, and controller is also connected with the tune of first regulating valve 10, second Save valve 11, third regulating valve 12, the 4th regulating valve 16, the 5th regulating valve 18, the first suction pump 15 and the second suction pump 19.
Preferably, filtering area setting is there are two compression spring 7, and each compression spring 7 is all connected with one and pressure-sensitive opens Close 8.
Usually water enters inhalant region from water inlet pipe, exhalant region is entered after by-pass filtration net and activated charcoal strainer, so It is flowed out afterwards from the first outlet pipe.When the impurity in inhalant region reaches certain degree, by-pass filtration net stress is to activated carbon mistake Strainer side is moved, compressed spring forced compression, and pressure sensitive switch stress closes the first regulating valve afterwards to a certain extent, opens second Regulating valve, impurity are flowed into along the first blow-off pipe along the second filter, and remaining moisture flows into the through secondary filtration net in impurity Tow filtrator lower part again flows into water inlet pipe under the action of the first suction pump, and the impurity in the second filter is then from second row Dirty pipe discharges.Process worked after certain time, can open the second suction pump, under the suction of the second suction pump, Flow velocity increases, and also greatly increases, can rapidly sweep away the impurity adhered in activated charcoal strainer to the impulse force of activated charcoal strainer, Then the first outlet pipe is flowed into after the filtering of third filter.
First regulating valve, the second regulating valve, third regulating valve, the 4th regulating valve, the 5th regulating valve, the first suction pump and The convenient automatic or remote control of two suction pumps, improves the degree of automation and flexible performance, and water quality passes through by-pass filtration net and work The double medium filtration of property charcoal filter screen, ensure that the clear of water quality.Impurity again passes by the second filter, reduces the waste of water, The end face that secondary filtration net is located at first blow-off pipe one end is inclined surface with horizontal plane setting at an acute angle, and impurity is facilitated to flow to the Two blow-off pipes, easy cleaning.The setting of second suction pump can clean activated charcoal strainer, activated carbon can be made to filter Net keeps best filter effect.Overall structure is simple, and good filtration effect also as save water resource, saves cost.
It should be noted that all features disclosed in this specification or disclosed all methods or in the process the step of, Other than mutually exclusive feature and/or step, it can combine in any way.
The technical solution of the utility model can be preferably realized according to the record of this specification.

Claims (5)

1. a kind of back-flushing filtering device, which is characterized in that including first filter and the second filter, the first filter Inside it is disposed with inhalant region, filtering area and exhalant region;The inhalant region is connected with water inlet pipe and the first blow-off pipe, and exhalant region connects Be connected to the first outlet pipe, filtering area along water (flow) direction it is sequentially connected be provided with by-pass filtration net, compression spring, pressure sensitive switch and Activated charcoal strainer;The first regulating valve, the second adjusting are respectively arranged on the water inlet pipe, the first blow-off pipe and the first outlet pipe Valve and third regulating valve;
The outlet of first blow-off pipe connects the second filter, and the second blow-off pipe and the second water outlet are provided on the second filter Pipe, the outlet of the second outlet pipe is connected on the water inlet pipe between the first regulating valve and first filter;Second outlet pipe On be provided with the first suction pump, the water outlet of the second outlet pipe is provided with the 4th regulating valve;The inside of second filter is set It is equipped with secondary filtration net, the end face that secondary filtration net is located at first blow-off pipe one end is the inclination with horizontal plane setting at an acute angle Face, the second blow-off pipe are located at corresponding second filter of inclined surface least significant end, and the 5th adjusting is provided on the second blow-off pipe Valve;
The exhalant region is also connected with the second suction pump by pipeline, and the discharge outlet of the second suction pump is connected to third by pipeline On the first outlet pipe between regulating valve and first filter.
2. a kind of back-flushing filtering device according to claim 1, which is characterized in that second suction pump and first goes out Third filter is provided between water pipe.
3. a kind of back-flushing filtering device according to claim 2, which is characterized in that the third filter is Y-piece Road filter.
4. a kind of back-flushing filtering device according to claim 1, which is characterized in that the pressure sensitive switch is connected with control Device, controller are also connected with first regulating valve, the second regulating valve, third regulating valve, the 4th regulating valve, the 5th regulating valve, One suction pump and the second suction pump.
5. a kind of back-flushing filtering device according to claim 1, which is characterized in that there are two pressures for the filtering area setting Power spring, and each compression spring is all connected with a pressure sensitive switch.
CN201820129844.XU 2018-01-24 2018-01-24 A kind of back-flushing filtering device Active CN207899074U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820129844.XU CN207899074U (en) 2018-01-24 2018-01-24 A kind of back-flushing filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820129844.XU CN207899074U (en) 2018-01-24 2018-01-24 A kind of back-flushing filtering device

Publications (1)

Publication Number Publication Date
CN207899074U true CN207899074U (en) 2018-09-25

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111387019A (en) * 2020-03-18 2020-07-10 广州纯元科技有限公司 A water-saving irrigation equipment for simple operation in gardens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111387019A (en) * 2020-03-18 2020-07-10 广州纯元科技有限公司 A water-saving irrigation equipment for simple operation in gardens

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