Blockage-preventing BAF (Biological Aerated Filter)

Abstract

The utility model relates to the technical field of biological filters, and discloses an anti-clogging BAF (Biological Aerated Filter), which comprises a filter body, a partition plate fixedly connected to the inner wall of the filter body, and a filter plate fixed to the inner wall of the aeration tank, a lifting assembly is arranged at the top of the filter plate, firstly, suspended solids in a water source to be treated can be blocked through the filter plate and the filter head, the water source to be treated is evenly distributed, movement of a filter material layer becomes simpler through the lifting assembly, the filter material layer is cleaned through a back-flushing air inlet pipe and a back-flushing water inlet pipe, and therefore the water source to be treated is cleaned more conveniently. The difficulty and risk of manual operation are reduced, the system shutdown time caused by maintenance and cleaning is shortened, and meanwhile, when the filtered water source enters the water collecting tank and then is subjected to chemical adding and other treatment, the water source and chemicals can be more quickly and uniformly mixed through the arrangement of the stirring assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to biological filter technical field, concretely is a kind of BAF aeration biological filter of preventing blockage. BACKGROUND

[0002] Aeration biological filter, abbreviated as BAF, is a kind of efficient water treatment technology, which integrates biological oxidation and suspended solid interception function, the process can remove suspended solids (SS), chemical oxygen demand (COD), biochemical oxygen demand (BOD), and also can realize nitrification, denitrification, phosphorus removal and removal of harmful organic matter (such as AOX), as a new type of biofilm treatment process, BAF plays the role of biological degradation and physical filtration through its unique filler layer structure, ensuring the efficiency and stability of wastewater treatment.

[0003] However, the current device, filter material layer is prone to blockage, filter material layer is fixed on the inner wall of filter tank, cannot be moved, when filter material layer is backwashed, often need to stop cleaning, increase the difficulty and risk of manual operation during maintenance, increase downtime due to maintenance and cleaning, reduce work efficiency, and water source cannot be evenly distributed when entering filter tank. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of BAF aeration biological filter of preventing blockage to solve the problem of filter material layer cannot be moved, increase the difficulty and risk of manual operation during maintenance and reduce work efficiency when washing.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of BAF aeration biological filter of preventing blockage, including filter tank body, the inner wall of filter tank body is fixedly connected with baffle, and the inner cavity of filter tank body is divided into aeration tank and water collecting tank by baffle, further including: filter plate fixed in the inner wall of aeration tank, the top of filter plate is provided with lifting assembly, lifting assembly includes support seat fixed in one side of filter tank body, the top of support seat is installed with electric telescopic handle, the top of electric telescopic handle is fixedly connected with L type connecting rod, one end of L type connecting rod is fixedly connected with support platform, one side of L type connecting rod is fixedly connected with sliding block, the outer wall of sliding block is slidably connected with sliding groove, and the sliding groove is opened on the inner wall front and back of aeration tank;

[0006] Filter head installed in the inside of support platform, gravel support layer is arranged on the top of the outer wall of filter head, the top of gravel support layer is provided with filter material layer, the inner wall of aeration tank on the top of filter plate is installed with backwash air inlet pipe and backwash water inlet pipe, the inner wall of aeration tank on the top of filter material layer is installed with backwash water outlet pipe.

[0007] Preferably, an aeration assembly is arranged between the filter plate and the support platform, the aeration assembly comprising a blower installed on the back of the filter tank body, an aeration pipe being installed at the output end of the blower, and the outer wall of the aeration pipe being arranged in the inner cavity of the aeration tank.

[0008] Preferably, a plurality of aeration branch pipes are symmetrically and fixedly connected to the outer wall of the aeration pipe, one end of the aeration branch pipes on both sides being fixedly installed on the inner wall of the aeration tank, and a plurality of aeration micro-holes being formed in the outer wall of the aeration branch pipes.

[0009] Preferably, a stirring assembly is arranged in the inner cavity of the water collecting tank, the stirring assembly comprising a driving motor installed on the front side of the filter tank body, and a rotating shaft being installed at the output end of the driving motor.

[0010] Preferably, the rotating shaft is rotatably connected to the inner cavity of the water collecting tank through the outer wall of the filter tank body, and a plurality of stirring blades are arranged on the outer wall of the rotating shaft.

[0011] Preferably, a support shaft seat is rotatably connected to one end of the rotating shaft, and one end of the support shaft seat is fixedly connected to the back of the inner cavity of the water collecting tank.

[0012] Preferably, a feeding pipe is installed on the front of the inner wall of the aeration tank at the bottom of the filter plate, and a blowdown pipe is installed at the bottom of one side of the inner cavity of the aeration tank.

[0013] Preferably, a drainage pipe is installed at the bottom of one side of the inner cavity of the water collecting tank, and valves are installed on the outer walls of the drainage pipe, the blowdown pipe, the backflushing water outlet pipe and the feeding pipe.

[0014] Compared with the prior art, the BAF aeration biological filter provided by the utility model has the beneficial effects as follows:

[0015] The utility model discloses a filter plate and a filter head can block the suspended solids in the water source to be treated, and the water source to be treated is evenly distributed, the movement of the filter material layer becomes simpler through the setting of the lifting assembly, the filter material layer is cleaned through the backflushing air inlet pipe and the backflushing water inlet pipe, the difficulty and risk of manual operation are reduced, the system downtime caused by maintenance and cleaning is reduced, and the water source and the reagent can be uniformly mixed more quickly through the setting of the stirring assembly when the water source filtered is treated by adding chemicals in the water collecting tank. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic view of a preferred embodiment of the BAF aeration biological filter provided by the utility model for preventing blockage is shown in the figure.

[0017] Figure 2 A cross-sectional structure schematic view provided by the utility model is shown in the figure.

[0018] Figure 3 Another state profile structure schematic view provided by the utility model;

[0019] Figure 4 Aeration assembly structure schematic view provided by the utility model;

[0020] Figure 5 Aeration assembly structure schematic view provided by the utility model.

[0021] In the figure: 1, filter pool body; 2, partition; 3, aeration tank; 4, water collecting tank; 5, feed pipe; 6, filter plate; 7, lifting assembly; 701, support seat; 702, electric telescopic rod; 703, L-shaped connecting rod; 704, support platform; 705, sliding block; 8, filter head; 9, gravel supporting layer; 10, filter material layer; 11, backflushing air inlet pipe; 12, backflushing water inlet pipe; 13, aeration assembly; 1301, air blower; 1302, aeration pipe; 1303, aeration sub-pipe; 1304, aeration micropore; 14, stirring assembly; 1401, driving motor; 1402, rotating shaft; 1403, stirring blade; 1404, support shaft seat; 15, backflushing water outlet pipe; 16, blowdown pipe; 17, drain pipe; 18, chute. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-5As shown, a kind of anti-clogging BAF aeration biological filter, including filter body 1, the inner wall of filter body 1 is fixedly connected with partition 2, and the inner cavity of filter body 1 is divided into aeration tank 3 and water collecting tank 4 by partition 2, the height of partition 2 is less than the height of filter body 1 can better guide the filtered water source to be handled into water collecting tank 4, further including: filter plate 6 fixed in the inner wall of aeration tank 3, filter plate 6 can intercept the solid particles of larger volume, the top of filter plate 6 is provided with lifting assembly 7, lifting assembly 7 includes support seat 701 fixed on one side of filter body 1, the top of support seat 701 is installed with electric telescopic rod 702, support seat 701 plays the supporting role of electric telescopic rod 702, the top of electric telescopic rod 702 is fixedly connected with L-shaped connecting rod 703, one end of L-shaped connecting rod 703 is fixedly connected with support platform 704, one side of L-shaped connecting rod 703 is fixedly connected with sliding block 705, sliding block 705 is slidably connected with sliding groove 18 on the outer wall, and sliding groove 18 is opened on the inner wall front and back of aeration tank 3, sliding groove 18 and sliding block 705 play the role of positioning, ensure the stability of lifting and falling process;

[0024] Filter head 8 installed in support platform 704, filter head 8 filters the water source to be handled again and ensures that the water source to be handled can uniformly pass through gravel support layer 9 into filter material layer 10, the top of the outer wall of filter head 8 is provided with gravel support layer 9, the bottom of gravel support layer 9 is arranged on the top of support platform 704, support platform 704 can support and install gravel support layer 9 and filter material layer 10, the top of gravel support layer 9 is provided with filter material layer 10, filter material layer 10 contacts and blocks the impurities suspended in the water source to be handled, the inner wall of aeration tank 3 located on the top of filter plate 6 is installed with backflush air inlet pipe 11 and backflush water inlet pipe 12, as the filtration time increases, the suspended matter at the bottom of filter material layer 10 will accumulate more and more, gravel support layer 9 and filter material layer 10 are moved upward to the top of backflush air inlet pipe 11 and backflush water inlet pipe 12 by lifting assembly 7, and are washed by water and air to prevent clogging, backflush water outlet pipe 15 is installed on one side of the inner wall of aeration tank 3 located on the top of filter material layer 10, and the washed suspended matter is discharged through backflush water outlet pipe 15.

[0025] Reference Figure 3 And Figure 4As shown, the filter plate 6 and the support platform 704 are provided with an aeration assembly 13, the aeration assembly 13 includes a blower 1301 installed on the back of the filter tank body 1, the output end of the blower 1301 is provided with an aeration pipe 1302, and the outer wall of the aeration pipe 1302 is arranged in the inner cavity of the aeration tank 3. A plurality of aeration branch pipes 1303 are symmetrically and fixedly connected to the outer wall of the aeration pipe 1302, and one end of the aeration branch pipes 1303 on both sides is fixedly installed on the inner wall of the aeration tank 3. A plurality of aeration micro-holes 1304 are formed in the outer wall of the aeration branch pipe 1303. The blower 1301 provided by the aeration assembly 13 delivers gas through the aeration pipe 1302 and divides the gas through the aeration branch pipes 1303 fixedly connected to the outer wall of the aeration pipe 1302. Finally, the gas is discharged through the plurality of aeration micro-holes 1304 formed in the outer wall of the aeration branch pipe 1303 to contact the water source to be treated for aeration treatment.

[0026] Reference Figure 2 And Figure 5 As shown, the inner cavity of the water collecting tank 4 is provided with a stirring assembly 14, the stirring assembly 14 includes a driving motor 1401 installed on the front side of the filter tank body 1, the output end of the driving motor 1401 is provided with a rotating shaft 1402, the outer wall of the rotating shaft 1402 penetrates the outer wall of the filter tank body 1 and is rotatably connected to the inner cavity of the water collecting tank 4, a plurality of stirring blades 1403 are arranged on the outer wall of the rotating shaft 1402, one end of the rotating shaft 1402 is rotatably connected with a support shaft seat 1404, one end of the support shaft seat 1404 is fixedly connected to the inner cavity of the water collecting tank 4. When the worker adds medicine to the water source to be treated in the water collecting tank 4 for further treatment, the stirring assembly 14 can drive the rotating shaft 1402 and the stirring blades 1403 fixedly installed on the outer wall of the rotating shaft 1402 to stir the water and the medicine powder through the operation of the driving motor 1401, so that the mixture is more uniform.

[0027] The inner wall of the aeration tank 3 located at the bottom of the filter plate 6 is provided with a feeding pipe 5, the feeding pipe 5 is a pipeline for the water source to be treated to enter the filter tank. The inner cavity of the aeration tank 3 is provided with a blow-off pipe 16 at one side of the bottom. The large-particle solids and suspended solids blocked by the filter plate 6 can be discharged through the blow-off pipe 16.

[0028] The inner cavity of the water collecting tank 4 is provided with a drain pipe 17 at one side of the bottom. The treated water is discharged through the drain pipe 17. Valves are installed on the outer walls of the drain pipe 17, the blow-off pipe 16, the backwashing water outlet pipe 15 and the feeding pipe 5. The flow rate of water in and out of the device can be controlled through the valves to ensure sufficient water treatment reaction time and to avoid excessive use of the device during blow-off.

[0029] Working principle: in use, the filter body 1 is fixedly connected with the partition plate 2 through the inner wall, which divides the inner cavity of the filter body 1 into the aeration tank 3 and the water collecting tank 4, the inner wall bottom of the aeration tank 3 is provided with the filter plate 6, the front surface of the inner wall of the aeration tank 3 located at the bottom of the filter plate 6 is provided with the feed pipe 5, the feed pipe 5 introduces the water source to be treated into the aeration tank 3, the filter plate 6 can intercept the solid particles with large volume, the aeration assembly 13 is located between the filter plate 6 and the lifting assembly 7, the air blower 1301 arranged in the aeration assembly 13 sends the gas to the aeration pipe 1302 and divides the gas through the aeration branch pipe 1303 fixedly connected with the outer wall of the aeration pipe 1302, finally the gas is discharged through the aeration micro-pores 1304 arranged on the outer wall of the aeration branch pipe 1303 to contact with the water source to be treated for aeration treatment, after the aeration treatment, the water source to be treated is filtered again through the filter head 8 arranged on the support platform 704, then passes through the gravel supporting layer 9 arranged on the top of the support platform 704 and contacts with the filter material layer 10 arranged on the top of the gravel supporting layer 9 to block the impurities and suspended matters in the water source to be treated, with the increase of the filtration time, the suspended matters at the bottom of the filter material layer 10 will be accumulated more and more, at this time, the electric telescopic rod 702 arranged in the lifting assembly 7 drives the L-shaped connecting rod 703 to move upward, drives the support platform 704 and the gravel supporting layer 9 and the filter material layer 10 arranged on the top of the support platform 704 to move upward, at this time, the support platform 704 is located at the top of the backflush air inlet pipe 11 and the backflush water inlet pipe 12, the backflush air inlet pipe 11 and the backflush water inlet pipe 12 flush the filter plate 6, the gravel supporting layer 9 and the filter material layer 10 to prevent the filter plate 6, the gravel supporting layer 9 and the filter material layer 10 from being blocked, and the suspended matters flushed out are discharged through the backflush water outlet pipe 15, after the flushing is completed, the lifting assembly 7 is reset, the filter material layer 10 can be maintained and cleaned more flexibly, the lifting assembly 7 makes the movement of the filter material layer 10 more simple, reduces the difficulty and risk of manual operation, reduces the system downtime caused by maintenance and cleaning, the sliding block 705 fixedly connected with one side of the L-shaped connecting rod 703 slides up and down in the sliding groove 18 arranged on the inner wall of the aeration tank 3, the sliding groove 18 and the sliding block 705 play the role of positioning to ensure the stability of the lifting and falling process, the arrangement of the lifting assembly 7 can ensure that the maintenance and replacement of the gravel supporting layer 9 and the filter material layer 10 are more convenient, the water source to be treated filtered through the filter material layer 10 enters the water collecting tank 4 after passing through the partition plate 2, the stirring assembly 14 arranged in the water collecting tank 4 can stir the water and the medicine powder through the rotation of the driving motor 1401 to drive the rotating shaft 1402 and the stirring blade 1403 fixedly installed on the outer wall of the rotating shaft 1402 when the workers add medicine to the water source to be treated in the water collecting tank 4 for further treatment, so that the mixture is more uniform, the treated water is discharged through the drain pipe 17, the large particle solids and suspended matters blocked by the filter plate 6 can be discharged through the blowdown pipe 16.

[0030] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0031] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A BAF aeration biological filter for preventing clogging, comprising a filter body (1), a partition plate (2) fixedly connected to the inner wall of the filter body (1), and the inner cavity of the filter body (1) is divided into an aeration tank (3) and a water collecting tank (4) by the partition plate (2), characterized in that, Also include: The filter plate (6) is fixed to the inner wall of the aeration tank (3), the top of the filter plate (6) is provided with lifting assembly (7), the lifting assembly (7) includes support seat (701) fixed to one side of filter tank body (1), the top of the support seat (701) is installed with electric telescopic rod (702), the top of the electric telescopic rod (702) is fixedly connected with L type connecting rod (703), one end of the L type connecting rod (703) is fixedly connected with support platform (704), one side of the L type connecting rod (703) is fixedly connected with sliding block (705), the outer wall of the sliding block (705) is slidably connected with sliding groove (18), and the sliding groove (18) is arranged on the front and back of the inner wall of the aeration tank (3); The filter head (8) is installed in the support platform (704), the outer wall of the filter head (8) is provided with gravel supporting layer (9), the bottom of the gravel supporting layer (9) is arranged on the top of the support platform (704), the top of the gravel supporting layer (9) is provided with filter material layer (10), the inner wall of the aeration tank (3) on the top of the filter plate (6) is provided with backflushing air inlet pipe (11) and backflushing water inlet pipe (12), the inner wall of the aeration tank (3) on the top of the filter material layer (10) is provided with backflushing water outlet pipe (15).

2. The anti-clogging BAF biological aerated filter according to claim 1, characterized in that: The filter plate (6) and the support platform (704) are provided with aeration assembly (13), the aeration assembly (13) includes air blower (1301) installed on the back of the filter tank body (1), the output end of the air blower (1301) is provided with aeration pipe (1302), and the outer wall of the aeration pipe (1302) is arranged in the inner cavity of the aeration tank (3).

3. The anti-fouling BAF biological aerated filter according to claim 2, characterized in that: The outer wall of the aeration pipe (1302) is fixedly connected with a plurality of aeration branch pipes (1303) on both sides, and one end of the aeration branch pipes (1303) on both sides is fixedly installed on the inner wall of the aeration tank (3), a plurality of aeration micropores (1304) are arranged on the outer wall of the aeration branch pipe (1303).

4. The clogging-preventing BAF biological aerated filter according to claim 1, characterized in that: The inner cavity of the water collecting tank (4) is provided with stirring assembly (14), the stirring assembly (14) includes drive motor (1401) installed on one side of the front of the filter tank body (1), the output end of the drive motor (1401) is provided with rotating shaft (1402).

5. The clogging-preventing BAF biological aerated filter according to claim 4, characterized in that: The rotating shaft (1402) is rotatably connected to the inner cavity of the water collecting tank (4) through the outer wall of the filter tank body (1), and a plurality of stirring blades (1403) are arranged on the outer wall of the rotating shaft (1402).

6. The anti-fouling BAF biological aerated filter according to claim 4, characterized in that: One end of the rotating shaft (1402) is rotatably connected with support shaft seat (1404), one end of the support shaft seat (1404) is fixedly connected to the inner cavity of the water collecting tank (4).

7. The clogging-preventing BAF biological aerated filter according to claim 1, characterized in that: The front of the inner wall of the aeration tank (3) on the bottom of the filter plate (6) is provided with feed pipe (5), and the bottom of one side of the inner cavity of the aeration tank (3) is provided with blowdown pipe (16).

8. The clogging-preventing BAF biological aerated filter according to claim 1, characterized in that: The inner cavity side bottom of the water collecting tank (4) is provided with a drain pipe (17), the outer walls of the drain pipe (17), the blow-off pipe (16), the back-flushing water outlet pipe (15) and the feeding pipe (5) are all provided with valves.

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