CN2582718Y

CN2582718Y - Gas water back flushing device used for moving flushing cage filter chamber

Info

Publication number: CN2582718Y
Application number: CN 02276653
Authority: CN
Inventors: 刘继平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-27
Filing date: 2002-09-27
Publication date: 2003-10-29
Anticipated expiration: 2012-09-27

Abstract

The utility model relates to a gas water back flushing device used for a moving flushing cage filter chamber, which belongs to a back flushing device of a filter layer in a water treatment process. The utility model comprises a moving flushing cage used for covering the filter chamber. The top of the moving flushing cage is communicated with a telescopic pipe. The rear part of the telescopic pipe is communicated with a three-way pipe. An outlet of the three-way pipe is connected with a vertical discharging pipe on which a discharging valve is arranged. The other outlet of the three-way pipe is communicated with water in a sealing mode by a pipeline. A back flushing water inlet pipe is arranged under the filter layer in the filter chamber. A gas distribution device of a plurality of exhaust holes is arranged above the filter layer in the filter chamber. The gap distribution device is communicated with a gas inlet pipe which is supplied with wind by a blower. The utility model adopts a gas water combination mode, carries out back flush to filter materials of the filtering layer of the filter chamber of the moving flushing cage, decreases water flushing strength, decreases the sealing requirements of the flushing cage and the filter chamber, saves water for the flush, and enhances a flushing effect.

Description

Be used for moving the air water back washing cleaning device in flushing cover filter tank

Technical field

This novel purifier that relates to is especially for the backwash apparatus field of filter course in the water treatment.

Technical background

Traditional mobile flushing cover filter tank in the waterworks will adopt water to carry out periodic back flush (calling water backwashing in the following text) to filtering layer after using the regular period, and water is discharged impurity, the foul in the filtering layer first, and filtering layer is played cleaning action; Second reduce the resistance of filter operation in the water treatment.The mobile flushing of general employing is covered, and draw with telescoping tube on its top, will wash cover fastening (often adopting the lifting of driving a vehicle) on the filter tank, washes the cover mouth and is provided with sealing strip with the junction, filter tank.During operation, open the backwash water inlet pipe (or filter) of inner filtration layer below, filter tank, make water reverse (flow direction of water when water treatment is operated) pass filtering layer from bottom to up, telescoping tube and the drainpipe through flushing cover top discharges again.Because traditional mobile flushing cover filter tank is to be arranged as a plurality of settings of row, so adopt above-mentioned portable flushing cover.Use one or a pair of flushing cover, alternately carries out single water backwashing to all filter tanks.Traditional mobile flushing cover filter tank is because of having advantages such as cost is low, valve is few, flushing is convenient, and is once popular in a large number at home.Through nearly 30 years practice, find only to adopt single water backwashing, more or less there is certain problem in the seal degree in cover body and filter tank in addition, and backwash effect is always not ideal, has seriously hindered the further raising of effluent quality.Therefore, how to still undergoing technological transformation in the mobile flushing cover filter tank of operation at present, how in conjunction with the advantage in traditional mobile flushing cover filter tank, the novel trans flusher in the mobile flushing cover filter tank of designing just seems extremely important.

The utility model content

Task of the present utility model is to provide a kind of air water back washing cleaning device that is used for moving flushing cover filter tank, and it can improve the backwash effect to filtrate under the prerequisite that reduces the backwashing water flow significantly.This task is realized by following technical scheme: a kind of air water back washing cleaning device that is used for moving flushing cover filter tank comprises being used for the mobile flushing cover of buckle closure on the filter tank; The telescoping tube that is communicated with this flushing cover top; Be arranged on the backwash water inlet pipe of inner filtration layer below, filter tank, it is characterized in that, also comprise the air inlet pipe that front end is connected with air blast, the air inlet pipe rear end is connected with a distribution device in gas-fluid, have plurality of rows pore eye (or narrow slit or filter) on this distribution device in gas-fluid, this distribution device in gas-fluid is arranged on the filter course below; The telescoping tube of described portable flushing cover rear end connects a threeway, and an outlet of threeway is connected with a blow-down pipe that vertically is provided with, and is equipped with atmospheric valve on the blow-down pipe, and another outlet is communicated with water seal through pipeline.Clearly, technique scheme is set up a cover feeder on the basis of the flusher in traditional mobile flushing cover filter tank, existing single water backwashing is improved to the backwash of air water combined type.On the one hand, this novel intensity that reduces the water flushing is saved backwashing water.Backwash process should adopt water behind the first gas, by gas flushing, turbid matter is stripped down from filtrate earlier, washes by water more turbid matter is drained; Also can adopt air water to wash simultaneously, air is drained by the pipeline that is communicated with flushing cover top in the lump with backwashing water.The water backwash rate can be by traditional 15l/sm ²Be reduced to 10l/sm ²On the other hand, the seal request between this novel reduction cover body and filter tank.Because the water backwash rate reduces greatly, the corresponding reduction of vacuum during the water flushing in the cover body, the seal request between cover body and filter tank also decreases.Therefore, be not difficult to find out, under the situation that reduces the backwashing water flow, adopt this novel backwash effect that improves filtrate.

Description of drawings

Fig. 1 is this novel and filter tank vertical view in use;

Fig. 2 is the profile along the A-A line shown in Figure 1.

The specific embodiment

Fig. 1 Fig. 2 illustrates, and in the water treatment plant, particularly running water treatment plant, several are arranged as row as shown in Figure 1 (discharge duct 6a, 6b distribution situation in the filter tank when two filter tanks of first row illustrate the flushing cover among Fig. 1 are set often in filter tank 1; Two filter tanks of second row illustrate the situation of adding a cover the flushing cover; All the other filter tanks only show its situation when uncovered).Be provided with filter plate 4 in the filter tank 1, filter plate 4 has the eyelet of spreading all over.The filter course of being made up of filtrate 5 is arranged on above the filter plate 4.Have plurality of rows pore eye on the distribution device in gas-fluid, it is arranged on filter course 5 belows, preferably be arranged on above the filter plate 4, below the filter course 5, this distribution device in gas-fluid can adopt along continuous straight runs shown in Figure 1 to be distributed on crisscross, the discharge duct 6a, the 6b that are interconnected below the filter course 5, has plurality of rows pore eye (narrow slit or dress filter) on discharge duct 6a, the 6b.The above-mentioned gas distribution apparatus is connected with air inlet pipe 6 as discharge duct 6a, 6b, and air inlet pipe 6 is communicated with air blast 8 through an air intake valve 7.Moving flushing cover 2 tops is communicated with a telescoping tube 3, telescoping tube 3 is connected (in the reality with a threeway 10, can not establish threeway 10, one vertical blow-down pipe only is set on the pipeline of water seal 11 fronts to get final product) threeway 10 1 outlet is connected with a blow-down pipe (being also referred to as blast pipe) that vertically is provided with, blow-down pipe is provided with atmospheric valve 9 (being also referred to as air bleeding valve), threeway 10 another outlets are connected with water seal 11, and water seal 11 is positioned at filter tank 1 operation (being the air-water backwashing operation) below the water surface.Be left and right two filter tanks among Fig. 2, its all facilities are left and right being symmetrical arranged.In the water treatment production process, build up turbid matter, foreign material in the filter course 5, the fluid resistance of water increases gradually, and therefore the decrease in efficiency of water treatment, to the regular period, needs filter course 5 is carried out backwash the filtrate in the cleaning filter course.This novel use when air-water backwashing is operated, at first use lifting appliance, it generally is driving, to move flushing cover 2 slings, buckle closure is being waited to wash on the filter tank, open air blast 8 then, air through air inlet pipe 6, is sent into the discharge duct below the filter course 5, and form multiply air-flow from its eyelet and go out, turbid matter is peeled off mutually with filtrate, and then said flow, is introduced the water with certain pressure by the backwash water inlet pipe (not shown among Fig. 1 Fig. 2) that is arranged on filter course 5 belows and is carried out backwash at last by 9 emptyings of the atmospheric valve behind the telescoping tube 3, the turbid matter of having peeled off is taken away, through telescoping tube 3, threeway 10 is laggard goes into water seal 11.Also can adopt air water to wash simultaneously.After this filter back washing is finished, the flushing cover of slinging with driving a vehicle, buckle closure is waited to wash on the filter tank at another, proceeds next step backwash operation.This novel filter tank design and traditional technological transformation of moving flushing cover filter tank that is mainly used in the water treatment plant.

Claims

1, a kind of air water back washing cleaning device that is used for moving flushing cover filter tank comprises being used for the mobile flushing cover of buckle closure on the filter tank; The telescoping tube that is communicated with this flushing cover top; Be arranged on the backwash water inlet pipe of inner filtration layer below, filter tank, it is characterized in that, also comprise the air inlet pipe (6) that front end is connected with air blast (8), the air inlet pipe rear end is connected with a distribution device in gas-fluid, have plurality of rows pore eye on this distribution device in gas-fluid, this distribution device in gas-fluid is arranged on filter course (5) below; The telescoping tube (3) of described mobile flushing cover (2) rear end connects a threeway (10), and an outlet of threeway (10) is connected with a blow-down pipe that vertically is provided with, and is equipped with atmospheric valve (9) on the blow-down pipe, and another outlet is communicated with water seal (11) through pipeline.

2, air water back washing cleaning device according to claim 1 is characterized in that, described distribution device in gas-fluid is crisscross, the discharge duct (6a, 6b) that is interconnected that along continuous straight runs is distributed on filter course (5) below.

3, air water back washing cleaning device according to claim 1 and 2 is characterized in that, the described air inlet pipe (6) that is positioned at behind the air blast (8) is provided with intake valve (7); Described discharge duct (6a, 6b) is arranged on above the filter plate (4), below the filter course (5).

4, air water back washing cleaning device according to claim 1 and 2 is characterized in that, described water seal (11) is positioned at below filter tank (1) the operation water surface.