CN2902402Y

CN2902402Y - Fiber filter

Info

Publication number: CN2902402Y
Application number: CN 200620033473
Authority: CN
Inventors: 李旭东; 李国欣
Original assignee: Chengdu Zhongke Chuangzhi Environment Protection Co ltd; Chengdu Institute of Biology of CAS
Current assignee: Chengdu Zhongke Chuangzhi Environment Protection Co ltd; Chengdu Institute of Biology of CAS
Priority date: 2006-03-20
Filing date: 2006-03-20
Publication date: 2007-05-23
Anticipated expiration: 2016-03-20

Abstract

The utility model belongs to the technical field of water disposal and relates to a compressing-draining fiber filter. A tank is provided with an upper screen plate and a lower screen plate, wherein the lower screen is fixed and the upper screen plate is movable. Processed fiber filtering material that is 10-200cm thick is filled between the two screen plates. The wall of the filter tank is provided with a window. A water-distribution machine and an air-distribution machine are arranged between the lower screen plate and the filter bottom, and are respectively connected with a water inlet and an air inlet. The upper screen plate is connected with a lifting machine arranged on the top of the filter by a lifting machine bolt. The wall of the filter tank is provided with a water outlet and a backwash water outlet. The water inlet is connected with a water-admitting pump and the backwash air inlet is connected with an aerator, and the water outlet is connected with a clear-water basin and the backwash water outlet is provided with a butterfly valve and connected with a sludge impoundment. The fiber filtering material is made from artificial fiber and netted cotton yarn. The filter has the advantages that the utility model is easy to produce, low-cost and good in filtering effects, and backwash water consumption is low.

Description

A kind of fabric filter

Technical field

The utility model belongs to water-treatment technology field, relates to a kind of water treatment filter, is used for the dried up suspended material of branch.

Background technology

Sanitary sewage, industrial wastewater and in the water treatment procedure such as water, to the removal of suspended material in the water and grease, filtration is an important process procedure.

Fabric filter is a filter comparatively commonly used, mainly is made up of slave parts such as filter tank body and fiber filtering and water distribution, backwashes.Fiber filtering commonly used at present adopts fiber bundle media and fiber-ball filter media, there is processed complex, the problem that cost is high, fiber bundle media filters under compacted condition, carries out backwash under relaxed state, has the little and low problem of the rate of filtration of filter bed pollutant holding capability, though and the filter bed that the method that adopts short-fibre silk to huddle forms has solved the problems referred to above, but exist filament to twine mutually, easily cause short stream, the not good and easy problem that runs off with backwashing water of repercussion effect.The method of water or combined water and air backwash is adopted in the backwash of filtrate, has the big problem of backwash water amount.

Summary of the invention

Problems such as the processed complex, cost height, the rate of filtration that have the fabric filter existence now are low in order to solve, weak point stream, backwash effect is poor, the backwash water amount is big, the utility model provides a kind of extruding pollution discharge type fabric filter.

The technical scheme that its technical problem that solves the utility model adopts is: this filter comprises the filter tank body, on having in the tank body, following two sieve plates, wherein playing sieve plate is fixed screen deck (5), upper sieve plate is active sieve plate (6), be filled with the fiber filtering of 10～200cm between two sieve plates through processing, observation panel (4) is set on the filter tank skin, be provided with water-locator and gas pipe between following sieve plate and the filter bottom, respectively with the filter tank skin on water inlet (2) link to each other with air inlet, upper sieve plate links to each other with the elevator that is arranged at filter top (7) by elevator (7) screw rod, on the filter tank skin more than the fixed screen deck (5), be provided with and filter out the mouth of a river (9) and backwash delivery port (8), filter out the mouth of a river (9) and be higher than backwash delivery port (8).Filter water inlet (2) links to each other with intake pump, and backwash air inlet (3) links to each other with air blast, and the delivery port of filter links to each other with clear water reserviors, and backwash delivery port (8) is provided with butterfly valve, links to each other with sludge-tank.Fiber filtering adopts artificial fiber, earlier fiber filtering is made cylindric filtrate big or small on an equal basis with filter tank body diameter, thick 2～50cm, spreads following two surfaces placed on it with netted cotton yarn again, and sews up in the side, promptly makes one deck filtrate.

The beneficial effects of the utility model are that filter adopts the fiber filtering through simple and easy processing, has handling ease, with low cost, filter down in nature (non-impaction state), have very big specific area, increase the adsorption capacity and the pollutant holding capability of filtrate, thereby prolonged filter cycle; Fiber filtering backwash regeneration in filtration and backwash process, can not produce filtrate and twine, runs off and short flow phenomenon easily; Fashion of extrusion is mainly adopted in backwash, can significantly reduce the backwash water amount.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 and Fig. 2 are structural representation of the present utility model, and the backwash delivery port (8) of Fig. 1 is lower than active sieve plate (6), and the backwash delivery port (8) of Fig. 2 is higher than active sieve plate (6).

Among the figure: 1. tank body, 2. water inlet, 3. backwash air inlet, 4. observation panel, 5. fixed screen deck, 6. active sieve plate, 7. elevator, 8. the backwash delivery port 9. filters out the mouth of a river, 10. elevator support, 11. elevator screw rods.

The specific embodiment

Embodiment 1: by shown in Figure 1, this filter comprises filter tank body (1), on having in the tank body, following two sieve plates, wherein playing sieve plate is fixed screen deck (5), upper sieve plate is active sieve plate (6), be filled with the fiber filtering of 80cm between two sieve plates through processing, observation panel (4) is set on the filter tank skin, be provided with water-locator that links to each other with 2 and the gas pipe that links to each other with 3 between fixed screen deck (5) and the filter bottom, active sieve plate (6) links to each other with the elevator that is arranged at filter top (7) by elevator screw rod (11), be provided with on the filter tank skin more than the fixed screen deck (5) and filter out the mouth of a river (9) and backwash delivery port (8), backwash delivery port (8) is lower than active sieve plate (6) and filters out the mouth of a river (9).Filter water inlet (2) links to each other with intake pump, and backwash air inlet (3) links to each other with air blast, filters out the mouth of a river (9) and links to each other with clear water reserviors, and backwash delivery port (8) is provided with butterfly valve, links to each other with sludge-tank.

Filter operation: open elevator (7), active sieve plate (6) is increased to a high position (tip position under the fiber filtering relaxed state), make filter material layer be in relaxed state, open intake pump, open water inlet (2) valve, close backwash delivery port (8) valve, promptly begin to filter; Closing intake pump can stop to filter.In the filter process, along with increasing of the solid particulate matter of fiber filtering cut-off filter, filtration resistance increases, and the intake pump outlet pressure increases, when the intake pump outlet pressure reaches 0.10MPa, (set) and close intake pump, filter is carried out backwash operation according to actual conditions.

Backwash: open backwash delivery port (8), open elevator (7), make active sieve plate (6) down move to low level (tip position of fiber filtering after the certain pressure compression) back counter motion, shut down in a high position, the extrusion fiber filtrate, the pollutant that is retained in the filtrate is extruded out with the water in the filtrate, discharges (extruding filtrate once can get rid of hold back more than 60% of pollutant) through backwash delivery port (8); Close backwash delivery port (8), open intake pump, reach the high-order back of active sieve plate (6) at water level and shut down, promptly finish extrusion operation one time.Repeat above-mentioned extrusion operation 3 to 4 times, can finish the backwash of filter.If the scene is provided with air blast, then can in backwash process, open air blast, in filter, charge into air, by strengthening the disturbance of filtrate, strengthen backwash effect.

Embodiment 2: Fig. 2, backwash delivery port (8) is higher than active sieve plate (6).

Filter operation is with embodiment 1.

Backwash: open the backwashing water outlet, open elevator (7), active sieve plate (6) is moved reciprocatingly between a high position and low level, extrusion fiber filtrate bed repeatedly, the pollutant that is retained in the filter bed is extruded out with the water in the filtrate, open intake pump, the backwash delivery port (8) that passes through that the sewage that extruding is come out does not stop is discharged, pump after 4,5 times at elevator (7), close elevator (7) (making it be stopped at a high position), filtrate is carried out rinsing, and water outlet is closed backwash delivery port (8) and is promptly finished backwash operation after becoming clearly.If the scene is provided with air blast, then can in backwash process, open air blast, in filter, charge into air by backwash air inlet (3), to strengthen the disturbance of filtrate, strengthen backwash effect.

Claims

1. fabric filter, comprise filter tank body and fiber filtering, it is characterized in that: on having in the filter tank body, following two sieve plates, wherein playing sieve plate is fixed screen deck, upper sieve plate is an active sieve plate, be filled with the fiber filtering of 10～200cm between two sieve plates through processing, on the filter tank skin observation panel is set, be provided with water-locator and gas pipe between following sieve plate and the filter bottom, respectively with the filter tank skin on water inlet link to each other with air inlet, upper sieve plate links to each other with the elevator that is arranged at filter top by the elevator screw rod, and the filter tank skin is provided with and filters out the mouth of a river and backwash delivery port, and the filter water inlet links to each other with intake pump, the backwash air inlet links to each other with air blast, the delivery port of filter links to each other with clear water reserviors, and the backwash delivery port is provided with butterfly valve, links to each other with sludge-tank.

2. fabric filter according to claim 1, it is characterized in that: described fiber filtering through processing adopts artificial fiber and netted cotton yarn to make, artificial fiber is the cylindric filtrate of the equal size of diameter and filter tank body diameter, thick 2～50cm, it puts netted cotton yarn in shop, two surfaces up and down, and sews up in the side.

3. fabric filter according to claim 1 is characterized in that: filter out the mouth of a river and backwash delivery port and be positioned on the above filter tank skin of fixed screen deck, filter out the mouth of a river and be higher than the backwash delivery port, the backwash delivery port is below or above active sieve plate.