CN101357276B

CN101357276B - Immersed filter

Info

Publication number: CN101357276B
Application number: CN2008101985838A
Authority: CN
Inventors: 臧立新
Original assignee: 臧立新
Current assignee: GUANGDONG CHUANGYUAN ENERGY SAVING ENVIRONMENTAL PROTECTION CO., LTD.
Priority date: 2008-09-13
Filing date: 2008-09-13
Publication date: 2010-11-10
Anticipated expiration: 2028-09-13
Also published as: CN101357276A

Abstract

The invention discloses a submerged filter, comprising a water storage tank, a supporting rack arranged inside the water storage tank, one or more filter discs fixedly arranged on the supporting rack, a filter medium arranged on the surface of the filter discs, and an inner cavity of the filter discs which is communicated with a discharge hole by an outlet tube and a water pump. The submerged filter has the advantages of small area occupancy, low operation cost, low water consumption for backwash which only accounts for 0.5%-2.0% of the total filtered water, lower energy consumption which only accounts for 20%-25% of the energy consumption of a conventional pressure filter or a vacuum filter, and meeting the requirements of saving energy and reducing energy consumption.

Description

A kind of immersed filter

Technical field

The present invention relates to a kind of water treatment facilities, particularly a kind of filter.

Background technology

In process of solid-liquid separation, filtering technique is one of the most frequently used technology.The principle of filtering is exactly to form certain pressure differential on the both sides of filter medium, insoluble suspended material is filtered medium and holds back, form filter cake, and solvent, solable matter and part can form clear filtrate by filter cake and filter medium less than the particulate in filter medium space, and then reach the effect of Separation of Solid and Liquid.

In the water treatment procedure of all conglomeraties, owing to need the amount of processing bigger, and the composition of the suspended material in the water is relatively stable, if but adopt traditional pressure type filter or vacuum filter to handle, the floor space of these filter plants is bigger, operating cost height, backwash water consumption rate height, and, do not meet energy-saving and cost-reducing now requirement to the consumption height of the energy.

Summary of the invention

The technical problem to be solved in the present invention provides the little immersed filter of a kind of floor space, reduces the consumption of operating cost, backwash water consumption rate and the energy.

In order to solve the problems of the technologies described above, a kind of immersed filter of the present invention, comprise storage tank, be provided with bearing support in the described storage tank, be installed with one or more filtering table on the bearing support, the surface of this filtering table is equipped with filter medium, the inner chamber of filtering table passes through outlet pipe, water pump is communicated with discharging opening, described filter medium surface is equipped with the netted press strip of the macromolecular material that is fixed, the contour surface of described filtering table is provided with the vacuum backpurge system, this vacuum backpurge system comprises and is arranged on the bearing support and the rotating shaft that overlaps with described filtering table center, the vacuum cups that filtering table is radially surrounded and fit tightly with the netted press strip on its surface is installed on this rotating shaft, described vacuum cups passes through carrier pipe, centrifugal pump is communicated with liquid outlet, has motor to drive this rotating shaft by driving-belt and rotates.

The passage that described vacuum cups comprises compressing tablet and is arranged on the compressing tablet top and connects with described carrier pipe, this compressing tablet middle part forms cavity with the filter medium on filtering table surface, described passage is communicated with this cavity by through hole, the both sides of compressing tablet are upturned, and the bottom surface, both sides of compressing tablet fits tightly with described netted press strip respectively.

The invention has the beneficial effects as follows: owing to adopted said structure, the floor space of this immersed filter is little, operating cost is low, the backwash water consumption rate is low, only account for 0.5%～2.0% of total filtration water yield, and lower to the consumption rate of the energy, have only 20% to 25% of conventional pressure type filter or vacuum filter power consumption, meet energy-saving and cost-reducing now requirement.

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention;

Description of drawings

Fig. 2 is a cross-sectional side structural representation of the present invention;

Fig. 3 is the radially sectional structure schematic diagram of filtering table;

Fig. 4 is the structural representation of vacuum cups.

The specific embodiment

Referring to figs. 1 through Fig. 3, a kind of immersed filter of the present invention, comprise storage tank 1, be provided with bearing support 2 in the described storage tank 1, be installed with one or more filtering table 3 on the bearing support 2, the surface of this filtering table 3 is equipped with filter medium 4, and the inner chamber of filtering table 3 is communicated with discharging opening 7 by outlet pipe 5, water pump 6.During work, pending water enters storage tank 1 and makes filtering table 3 submergences wherein, the inner chamber that starts water pump 6 back filtering tables 3 forms negative pressure, and pending water is realized filtering through the inner chamber that filter medium 4 enters filtering table 3, and the water after the filtration is discharged through outlet pipe 5, water pump 6 and discharging opening 7.Owing to adopted said structure, the floor space of this immersed filter is little, operating cost is low, the backwash water consumption rate is low, only account for 0.5%～2.0% of total filtration water yield, and lower to the consumption rate of the energy, have only 20% to 25% of conventional pressure type filter or vacuum filter power consumption, meet energy-saving and cost-reducing now requirement.

Described filter medium 4 surfaces are equipped with the netted press strip 9 of the macromolecular material that is fixed, and this netted press strip 9 can be connected and fixed by the support body of screw and filtering table 3.The contour surface of described filtering table 3 is provided with vacuum backpurge system 8, this vacuum backpurge system 8 comprises and is arranged on the bearing support 2 and the rotating shaft 81 that overlaps with described filtering table 3 centers, the vacuum cups 82 that filtering table 3 is radially surrounded and fit tightly with the netted press strip 9 on its surface is installed on this rotating shaft 81, described vacuum cups 82 is communicated with liquid outlet 85 by carrier pipe 83, centrifugal pump 84, has motor 86 to drive this rotating shaft 81 by driving-belt 87 and rotates.When the suspended material on filter medium 4 surfaces is stacked into certain thickness, the flow that flows through filtering table 3 is less than setting when replenishing flow, liquid level in the pond can rise, when liquid level has risen to the height of a certain setting or through time of one section setting, the vacuum backpurge system can start, and filter medium 4 surfaces are cleaned.Because the vacuum cups 82 of vacuum backpurge system is attached to filter medium 4 surfaces of filtering table 3, under the swabbing action of centrifugal pump 84, vacuum cups 82 can tightly be inhaled on the netted press strip of filter medium 4 lip-deep macromolecular materials and rotate adjustable-speed by certain speed.The suspension that is adsorbed on filter medium 4 surfaces is sucked and shifts out the vacuum backpurge system, and then cleaning filtering table surface, and high-quality backwash filter process when realizing continuous filtration reaches high efficiency filtration.

With reference to Fig. 4, described vacuum cups 82 comprises compressing tablet 821 and the passage 822 that is arranged on compressing tablet 821 tops and connects with described carrier pipe 83, the filter medium 4 on these compressing tablet 821 middle parts and filtering table 3 surfaces forms cavity, described passage 822 is communicated with this cavity by through hole 823, the both sides of compressing tablet 821 are upturned, and the bottom surface, both sides of compressing tablet 821 fits tightly with described netted press strip 9 respectively.Owing to adopt said structure, the both sides of compressing tablet 821 and netted press strip 9 are fitted the cavity and the outside pending water of compressing tablet formation is isolated, when taking seriously suction 82 work, form big negative pressure in the cavity scope, make the suspension that is adsorbed on filter medium 4 surfaces discharge the vacuum backpurge system, realize high-efficiency cleaning through through hole 823, passage 822 and carrier pipe 83.And the both sides of compressing tablet 821 are upturned, and avoid the corner of compressing tablet in running that netted press strip 9 is damaged.The another kind of structure of described vacuum cups 82 can also be the pipeline that is provided with in the cavity of compressing tablet 821 middle parts and filter medium 4 formation with some apertures, and this pipeline and carrier pipe 83 are connected, and can realize the effect of backwash equally.

Described filtering table 3 is put together by the filtration fraction of two semicircles or semicircular, and transportation, installation and removal are conveniently.

Described filter medium 4 is fiber, fibrous braid, cardboard, micro-filtration membrane, milipore filter or wire netting, can select the filter medium of different filtering accuracies according to actual needs for use, realizes the controlled of filtering accuracy.

The top of described storage tank 1 is provided with charging aperture 11; The bottom of described storage tank 1 is provided with sludge funnel 14; The bottom of described sludge funnel 14 is provided with sewage draining exit 12, the cleaning of convenient pending water deposit.In addition, the top of described storage tank 1 is provided with overfall 13, pending water excessive in the storage tank 1 can be flowed out from overfall 13, avoid the pollution around the filter, but also can realize when liquid level has risen to overfall 13, starting vacuum backpurge system 8 by control device, filtering table 3 surfaces are cleaned.

Claims

1. immersed filter, comprise storage tank (1), it is characterized in that being provided with in the described storage tank (1) bearing support (2), be installed with one or more filtering table (3) on the bearing support (2), the surface of this filtering table (3) is equipped with filter medium (4), the inner chamber of filtering table (3) is by outlet pipe (5), water pump (6) is communicated with discharging opening (7), described filter medium (4) surface is equipped with the netted press strip (9) of the macromolecular material that is fixed, the contour surface of described filtering table (3) is provided with vacuum backpurge system (8), this vacuum backpurge system (8) comprises and is arranged on the rotating shaft (81) that bearing support (2) is gone up and overlapped with described filtering table (3) center, the vacuum cups (82) that filtering table (3) is radially surrounded and fit tightly with the netted press strip (9) on its surface is installed on this rotating shaft (81), described vacuum cups (82) is by carrier pipe (83), centrifugal pump (84) is communicated with liquid outlet (85), has motor (86) to drive this rotating shaft (81) by driving-belt (87) and rotates.

2. immersed filter according to claim 1, it is characterized in that the passage (822) that described vacuum cups (82) comprises compressing tablet (821) and is arranged on compressing tablet (821) top and connects with described carrier pipe (83), this compressing tablet (821) middle part forms cavity with the filter medium (4) on filtering table (3) surface, described passage (822) is communicated with this cavity by through hole (823), the both sides of compressing tablet (821) are upturned, and the bottom surface, both sides of compressing tablet (821) fits tightly with described netted press strip (9) respectively.

3. immersed filter according to claim 1 is characterized in that described filtering table (3) is put together by the filtration fraction of two semicircles.

4. immersed filter according to claim 1 is characterized in that described filter medium (4) is fiber, fibrous braid, cardboard, micro-filtration membrane, milipore filter or wire netting.

5. immersed filter according to claim 1 is characterized in that the top of described storage tank (1) is provided with charging aperture (11).

6. immersed filter according to claim 1 is characterized in that the top of described storage tank (1) is provided with overfall (13).

7. immersed filter according to claim 1 is characterized in that the bottom of described storage tank (1) is provided with sludge funnel (14).

8. immersed filter according to claim 7 is characterized in that the bottom of described sludge funnel (14) is provided with sewage draining exit (12).