CN201015717Y - Precision filter - Google Patents

Abstract

A precision filter comprises a filter tank body with a water inlet, a water outlet and a sewage outlet, wherein a filtering and backwashing unit device is arranged in the filter tank body, and the filtering and backwashing unit device comprises: an inner grating frame and an outer grating frame are fixed in the filter tank body, and a filter material is clamped between the inner grating frame and the outer grating frame; a sewage discharge chamber is formed between the top end socket and the partition plate above the filter tank body, and a sewage discharge valve is arranged on the end socket; a drain pipe is arranged from the center of the filter to the top end of the filter, and a drain outlet of the drain pipe is communicated with the accommodating chamber; the inner sewage discharge pipe passing through the center of the filter is provided with a scanner capable of completely scanning the fiber filter material in the inner grating frame, and the outer side of the scanner close to the inner grating frame is provided with a sucking port for sewage discharge. The utility model is a special device for an industrial circulating water treatment system, which changes the traditional filter material stacking structure into a frame structure that the filter material is fixed in an inner grid and an outer grid; the traditional filtering material loose type backwashing is changed into filtering material sucking scanning type backwashing.

Description

A kind of accurate filter

Technical field

The utility model belongs to industrial cycle water treatment system special equipment, relates in particular to a kind of accurate filter.

Background technology

Now the filter that uses of industrial cycle water treatment system mainly contains two kinds, i.e. filtrate formula filter, net type filter, and these two kinds of filters in use cut both ways.

Filtrate formula filter in use can effectively be removed suspension and the grease in the recirculated water, and still, the effective filtration area of filtrate formula filter is little, causes filter efficiency low, in backwash process, filtrate takes place easily run the mistake phenomenon.

Can effectively remove the suspension in the recirculated water in the use of net type filter formula, but can not remove grease, in backwash process, can not effectively remove the suspension that is bonded in the filter screen hole.

Summary of the invention

The purpose of this utility model provides a kind of accurate filter, and it can overcome the defective of existing filter, in use can effectively remove suspension and grease in the recirculated water.

For achieving the above object, the utility model is taked following design: a kind of accurate filter, comprise the filter tank body that has entery and delivery port and sewage draining exit, the filter tank body is built-in with and filters and the backwash cell arrangement, and described filtration and backwash cell arrangement comprise:

Be fixed with inside and outside grid framework in the filter tank body, and inside and outside grid framework therebetween is equipped with filtrate;

Sewage draining valve is established by forming a blowdown room between top end socket and the dividing plate in filter tank body top on end socket; There is blow-off pipe at the center of passing filter to the top of filter, and the sewage draining exit of blow-off pipe communicates with room;

Be equipped with in can all scanning the scanner of fiber filtering in the grid framework on passing the interior blow-off pipe of filter center, there is the mouth of sucking that blowdown uses in the outside of scanner near interior grid framework place.

Described scanner is driven by drive motors, and drive motors places on the end socket at blow-off pipe top.

Accurate filter is traditional filtrate to be stacked the formula structure change into filtrate is fixed on tower structure in the inside and outside grid; The loose formula backwash of traditional filtrate is changed into filtrate suck the scan-type backwash.

The utility model has the advantages that: changed traditional filtrate formula structure of filter, increased filter area, improved filter efficiency, backwash effect is more thorough.

Description of drawings

Fig. 1 is the utility model accurate filter structural representation (a main cutaway view)

Fig. 2 is the utility model accurate filter A--A cutaway view

Fig. 3 is an accurate filter blow-off pipe structure enlarged diagram

Fig. 4 is an accurate filter scanner cutaway view

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model accurate filter comprises shell 11, has the filter tank body of entery and delivery port 1,2 and sewage draining exit 5, and the filter tank body is built-in with and filters and the backwash cell arrangement.

Described filtration and backwash cell arrangement comprise: grid framework 10, outer grid framework 8 in the filter tank body, being fixed with, and inside and outside grid framework therebetween is equipped with filtrate 9; This filtrate 9 can be fiber filtering; Sewage draining valve 3 is established by forming a blowdown room between top end socket 6 and the dividing plate 7 in filter tank body top on end socket; There is blow-off pipe 12 at the center of passing filter to the top of filter, and the sewage draining exit 5 of blow-off pipe communicates with room.

Referring to Fig. 2, Fig. 3, Fig. 4, on passing the interior blow-off pipe of filter center, be equipped with in can all scanning the scanner 13 of fiber filtering in the grid framework, the outside of scanner sucks mouthfuls 14 near what interior grid framework place had that blowdown uses.

Described scanner 13 is driven by drive motors 4; Drive motors places on the end socket at blow-off pipe top.

The course of work of the present utility model is: when the accurate filter operate as normal, the circulating water flow that needs to filter enters filter, gap, outer grid 8 by interior grid 10, fiber filtering 9, suspension in the recirculated water and oil stain are filtered by fiber filtering 9, be trapped in the surface of fiber filtering 9, recirculated water after the filtration flows out from the delivery port 2 that is connected shell 11, and water outlet is water purification.

Along with being trapped in increasing of suspension on the filtrate, make filter water inlet and delivery port form pressure differential.When pressure reduction reaches preset value, just start anti-clean cycle, at first open sewage draining valve 3, the pressure of make blowoff valve, blow-off pipe, scanner, sucking mouthful is reduced to atmosphere and is communicated.Start drive motors 4 then, drive 13 rotations of blow-off pipe 12 scanners, cause the pressure differential of sucking between mouthful relative filtrate inner face and the filtrate outside, produce the powerful backwashing water of one suction and will suck suspension on the relative filtrate of mouthful mouth and be drawn in the blowdown room between dividing plate 7 and the end socket 6, discharge by sewage draining valve 3 again.After fiber filtering is rinsed well, close blowoff valve, drive motors, equipment returns to full filter state.

Claims (3)

1. an accurate filter comprises the filter tank body that has entery and delivery port and sewage draining exit, and the filter tank body is built-in with and filters and the backwash cell arrangement, it is characterized in that described filtration and backwash cell arrangement comprise:

Be fixed with inside and outside grid framework in the filter tank body, and inside and outside grid framework therebetween is equipped with fiber filtering;

Sewage draining valve is established by forming a blowdown room between top end socket and the dividing plate in filter tank body top on end socket; There is blow-off pipe at the center of passing filter to the top of filter, and the sewage draining exit of blow-off pipe communicates with room;

Be equipped with in can all scanning the scanner of fiber filtering in the grid framework on passing the interior blow-off pipe of filter center, there is the mouth of sucking that blowdown uses in the outside of scanner near interior grid framework place.

2. accurate filter according to claim 1 is characterized in that: described scanner is driven by drive motors.

3. accurate filter according to claim 2 is characterized in that: described drive motors places on the end socket at blow-off pipe top.

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