CN211752741U - Filter tank sharing filter material cleaning device - Google Patents

Abstract

The utility model discloses a filter tank of a shared filter material cleaning device, which comprises a plurality of filter tanks arranged in parallel, wherein a plurality of filter material air-lifting pipelines distributed in rows and columns are arranged in each filter tank, and the filter material air-lifting pipelines are divided into at least two lines; at least one group of rails is laid above the tank body, the rails are positioned in the middle of two rows of filter material air stripping pipelines, and the filter material cleaning device is placed on the rails; the filter material cleaning device is provided with a power assembly which drives the filter material cleaning device to move above the same stage of the tank body along the track; the discharge end of the filter material cleaning device is provided with a discharge reversing valve, the discharge reversing valve is connected with two discharge chutes, and the discharge chutes face the filter material air stripping pipelines on two sides of the track respectively. The utility model arranges a plurality of filter material air stripping pipelines in the filter chamber, so that the filter material flows uniformly, the inclination angle of the bottom of the filter chamber can be reduced, the thickness of the filter layer is increased, and the utilization rate of the filter material is improved; the same filter pool can share one set of filter material cleaning device, so that the idle rate of the equipment is reduced, and the cost is reduced.

Description

Filter tank sharing filter material cleaning device

Technical Field

The utility model belongs to the technical field of sewage treatment device, in particular to filter material belt cleaning device's that shares filtering pond.

Background

The existing flowing sand filter and flowing activated carbon adsorption filter used in the water treatment industry have several modes of single stage, two stage or multi stage aiming at different concentrations of pollutants to be removed. The purpose of multistage setting is in order to increase the gross height of precoat, increases the time of being handled the sewage to improve the treatment effect. When the water quantity to be treated is large, a mode that a plurality of filter bodies in each stage are connected in parallel to run is needed, the filter bodies are mutually independent and are provided with respective pipelines and filter material cleaning devices. The filter material cleaning device usually has idle time, and each filter chamber is provided with one filter material cleaning device, so that the equipment investment cost is high and the utilization rate is low.

Meanwhile, in order to increase the sewage treatment capacity, the area of a single filter needs to be increased, and in order to enable the filter material to smoothly flow downwards, the conical hopper at the bottom of the filter needs to be designed to be steeper, which results in that the ineffective height of the filter is more (taking a5 m × 5 m pool as an example, the height of the conical hopper is about 3.25 m), and in order to ensure the treatment effect, the height of the filter needs to be increased, which in turn will greatly increase the construction cost. Because the area of the filter is large, only the central position is provided with the material lifting point, the condition that only the central material is discharged is easily formed, dead angles are formed at the periphery, and the peripheral filter materials are completely polluted and blocked after being not cleaned for a long time, so that the treatment capacity is lost.

Filter material belt cleaning device only has a blanking point, and when the pond area was great, high, the peripheral low shape in the middle of the easy formation of filter material layer top, the peripheral lower time that makes water pass through the filter material layer shortens, handles not abundant enough promptly, influences the treatment effect, at this moment need increase again and strickles the device for the belt cleaning device structure is miscellaneous. And the cleaning when new filter materials are added and the daily cleaning of filter materials in the tank have different requirements on the cleaning yield of the filter material cleaning device, and the current filter material cleaning device can not meet the requirement of variable cleaning yield.

Disclosure of Invention

The utility model aims at solving the problems, providing a filter tank of a shared filter material cleaning device which has simple structure and saves cost and ensures that filter materials flow uniformly.

Therefore, the technical scheme of the utility model is that: the utility model provides a sharing filter material belt cleaning device's filtering pond, includes a plurality of cell bodies of parallelly connected setting, its characterized in that: a plurality of filter material air-lifting pipelines distributed in rows and columns are arranged in each tank body, and the filter material air-lifting pipelines are at least divided into two rows; at least one group of rails is laid above the tank body, the rails are positioned in the middle of two rows of filter material air stripping pipelines, and the filter material cleaning device is placed on the rails; the filter material cleaning device is provided with a power assembly which drives the filter material cleaning device to move above the same stage of the tank body along the track; the discharge end of the filter material cleaning device is provided with a discharge reversing valve, the discharge reversing valve is connected with two discharge chutes, and the discharge chutes face the filter material air stripping pipelines on two sides of the track respectively.

Furthermore, two feed inlets are formed in the feed end of the filter material cleaning device, and a lifting assembly for driving the feed inlets to lift is arranged below the feed inlets; when the filter material cleaning device moves along the track, the feed inlet is at a low position, and when the filter material cleaning device moves to a working position, the feed inlet rises to be connected with the filter material air stripping pipeline.

Further, filter material belt cleaning device still includes cylindric first screen cloth and second screen cloth, and first screen cloth and second screen cloth coaxial setting, and two screen cloth insides are linked together, and the feed inlet is connected to first screen cloth, and ejection of compact switching-over valve is connected to the second screen cloth.

Furthermore, the lower parts of the first screen and the second screen are arranged in the water tank, and material propelling spiral plates are fixed in the first screen and the second screen; the device is characterized by also comprising a driving assembly for driving the first screen and the second screen to roll, wherein the first screen and the second screen roll in respective water tanks, and the internal material propelling spiral piece synchronously rotates.

Furthermore, the filter material air-stripping pipeline consists of a discharge pipe, an air-stripping device, a feed pipe and an air inlet valve, wherein the discharge pipe and the feed pipe are respectively positioned at the upper end and the lower end of the air-stripping device, and the air-stripping device is connected with the air inlet valve through the air inlet pipe; a protective sleeve is arranged on the outer side of the filtering material gas stripping pipeline, a water inlet valve is arranged above the protective sleeve, and the water inlet valve is communicated with the discharging protective sleeve through a pipeline; and a pressure-bearing protective cover is arranged below the protective sleeve.

Furthermore, the pressure-bearing protective cover is of a horn-shaped structure with a downward opening, the pressure-bearing protective cover is divided into an inner layer and an outer layer, the inner layer is fixed on the outer side of the protective sleeve, and the outer layer is provided with a water distributor which comprises a plurality of water distribution arms which are uniformly distributed; the water distributor is connected with a water inlet pipe through a water flow channel between the inner layer and the outer layer of the pressure-bearing protective cover.

Furthermore, the filter material air-stripping pipelines positioned on the same side of the track are grouped in pairs, and a blanking pipe is arranged between the two filter material air-stripping pipelines in each group; the blanking pipe is of a splayed structure, and two outlets of the blanking pipe face to the air stripping pipelines of the filter materials on two sides respectively.

Furthermore, a plurality of position sensing blocks are arranged on two sides of the track, and a sensing switch is arranged on the filter material cleaning device and works in a matching mode.

The utility model is provided with a plurality of filtering material air-lifting pipelines inside the filter tank, and can extract materials to be cleaned at a plurality of positions, so that the filtering material layer flows downwards more uniformly, almost no dead angle exists, and the utilization rate of the filtering material is greatly improved; meanwhile, the height of the cone bucket required in the filter tank can be reduced, and the effective use height of the filter tank is increased. The filter material air stripping pipelines are arranged into at least two rows, a rail is laid in the middle of the filter material air stripping pipelines, and the movable filter material cleaning devices are placed on the rail, so that the filter material cleaning devices can reciprocate on each filter material air stripping pipeline, discharge positions are switched through the discharge reversing valves, the discharge reversing valves are respectively connected with the filter material air stripping pipelines on the two sides of the rail, and the lifted filter materials are cleaned. The filter chambers connected in parallel at the same stage can share the filter material cleaning devices, the number of the filter material cleaning devices is determined according to the number of rows of the filter material air stripping pipelines, and each two rows are provided with one set of guide rail and one set of filter material cleaning device.

Position induction blocks are arranged on two sides of the rail, the filter material cleaning device is matched with the position induction blocks through an induction switch, and after the position of a discharge pipe of the filter material air stripping pipeline is opposite to one of feed inlets of the filter material cleaning device, the filter material cleaning device starts to clean the filter material. The filter material air-lifting pipelines are divided into two lines, the filter material cleaning device is arranged in the middle, the discharging position is switched through the discharging reversing valve, the filter material air-lifting pipelines on the two sides can be considered, and the staying position of the filter material cleaning device is reduced.

The middle of every two filter material air stripping pipelines is provided with a position for adding new filter materials, a blanking pipe with a splayed structure is placed, the new filter materials which are added into the filter tank from the next-stage filter tank or the outside through a pipeline are input through a filter material cleaning device, the new filter materials are controlled to fall into the blanking pipe on the left side or the right side through a discharge reversing valve during input, and after the new filter materials are evenly distributed through two outlets of the blanking pipe, the new filter materials fall above the position of each filter material air stripping pipeline.

The filter material air stripping pipeline is externally provided with a protective sleeve, so that the filter material air stripping pipeline can be conveniently taken out for maintenance under the condition that the filter tank is not cleaned; the filter material air stripping pipeline is arranged in the pond, so that the pipeline is short, the turning is less, the phenomenon of abrasion perforation is not easy to generate, and even when the pipeline is abraded to generate leakage, the leaked filter material can fall back into the filter pond, and large production accidents can not be generated.

A pressure-bearing protective cover is arranged below each filter material air lifting pipeline, and the pressure-bearing protective cover can prevent the filter material at the inlet of the filter material air lifting pipeline from being pressed to be dense and difficult to flow; the pressure-bearing protective cover is also provided with a plurality of water distribution arms which are arranged in a radial shape to form a water distributor, the water distributor is connected with a water inlet pipe, water flows from the lower part of the water distribution arms, and the water distribution arms open a space in the filter material layer to enable water to flow out freely. After passing through the water distributor, the water flow upwards passes through the filter material layer, pollutants in the water are gradually intercepted or adsorbed, the water is gradually cleaned, and finally the water flows out of the water outlet weir at the top and flows to the next stage of filter tank for continuous treatment or the next treatment process.

The utility model arranges a plurality of filter material air stripping pipelines in the filter tank, so that the filter material (quartz sand and active carbon) flows uniformly, and simultaneously, the inclination angle of the bottom of the filter tank can be reduced, the thickness of the filter layer is increased, and the utilization rate of the filter material is improved; the same filter pool can share one set of filter material cleaning device, so that the idle rate of the equipment is reduced, and the cost is reduced.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a schematic structural diagram of a filter;

FIG. 2 is a side sectional view of the primary filter chamber and the secondary filter chamber;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a cross-sectional view A-A of FIG. 2;

FIG. 5 is a cross-sectional view B-B of FIG. 2;

FIG. 6 is a cross-sectional view C-C of FIG. 2;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 2;

FIG. 8 is a schematic structural diagram of the filter material cleaning device;

FIG. 9 is a schematic side view of the filter media cleaning apparatus;

FIG. 10 is a schematic diagram of the structure of a filter material stripping pipeline.

Labeled as: the device comprises a primary filter tank 1, a primary feeding pipe 11, a primary discharging pipeline 12, a water outlet weir 13, a discharging point protective cover 14, a secondary filter tank 2, a secondary discharging pipeline 21, a secondary water inlet pipe 22, a filter material layer 3, a filter material gas stripping pipeline 4, a discharging pipe 41, a gas stripping device 42, a feeding pipe 43, a protective sleeve 44, a pressure-bearing protective cover 45, a water distributor 46, a primary water inlet pipe 47, a blanking receiving and guiding groove 48, an air inlet valve 49, a water inlet valve 50, a track 5, a protective railing 51, a position sensing block 52, a filter material cleaning device 6, a driving wheel 61, a sensing switch 62, a discharging groove 63, a feeding port 64, a lifting push rod 65, a discharging reversing valve 66, a first screen 67, a second screen 68, a first water tank 69, a second water tank 70, a sewage discharging groove 71, an aeration motor 72, a power motor 77, a control cabinet 78, an operation cabinet 79, a washing water pump 80, a sewage drainage pipeline 84 and a blanking pipe 9.

Detailed Description

See the drawings. In this embodiment, taking two-stage filters as an example, the first-stage filter 1 and the second-stage filter 2 each include 5 filter bodies arranged in parallel, and according to the size of each filter body, an appropriate number of filter material air-lifting pipelines 4 are arranged in each filter body, for example, 5 m × 5 m tanks, 4 filter material air-lifting pipelines 4 may be arranged in each filter body, the bottom of each tank has an inclined plane with a height of about 1 m, and the 4 filter material air-lifting pipelines are arranged in two rows; 20 filter material air stripping pipelines are respectively arranged on the first-stage filter tank and the second-stage filter tank, 10 filter material air stripping pipelines are arranged in one line, and the filter material air stripping pipelines are divided into two lines. A set of track 5 is respectively laid above the first-stage filter tank and the second-stage filter tank, the track is positioned in the middle of two rows of filter material air stripping pipelines, the first-stage filter tank and the second-stage filter tank respectively comprise a set of filter material cleaning device 6, the filter material cleaning device is placed on the track, a driving wheel 61 and a driving wheel rotating power motor 77 are arranged on the filter material cleaning device 6, and the filter material cleaning device 6 is driven to move above the first-stage tank body or the second-stage tank.

The protective railing 51 is arranged above the track 5, the filter material air-lift pipelines 4 are arranged in two rows of 10 in each row, and the filter material cleaning device is provided with two discharge chutes 63 and two feed inlets 64, so that the filter material air-lift pipelines on two sides of the track can be cleaned and fed. The protective barrier 51 is provided with 10 position sensing blocks 52, the filter material cleaning device 6 is provided with a sensing switch 62, and when the protective barrier and the filter material cleaning device work in a matching way, the discharge pipe 41 of the filter material air stripping pipeline 4 is connected with the feed inlet 64, so that the filter material cleaning work can be started.

The positions of 10 filter material air stripping pipelines 4 are recorded as air stripping points, the air stripping points are divided into two groups, and a feeding point is arranged between each two air stripping points, namely the air stripping point A1, a feeding point B1, an air stripping point A2, an air stripping point A3, a feeding point B2, an air stripping point A4, an air stripping point A5, a feeding point B3, an air stripping point A6, an air stripping point A7, a feeding point B4, an air stripping point A8, an air stripping point A9, a feeding point B5 and an air stripping point A10 can be arranged on the filter tank from left to right. Each feeding point is provided with a blanking pipe 9 which is of a splayed structure, two outlets respectively face to the air stripping pipelines (air stripping points) of the filter materials on two sides, the discharge chute is aligned with the blanking pipe of the feeding point, the new filter materials in the filter tank are fed from the next-stage filter tank or the outside through the pipeline and are averagely distributed above the two air stripping points, and the work of adding the new filter materials is completed.

The feed end of the filter material cleaning device 6 is provided with two feed inlets 64, and a lifting push rod 65 for driving the feed inlets to lift is arranged below the feed inlets; the filter material cleaning device 6 moves along the rail 5, when the device is at a non-working position, the feed inlet is at a low position, and when the device is moved to a working position, the feed inlet 64 is lifted to be connected with the discharge pipe 41 of the filter material air stripping pipeline. A discharge reversing valve 66 is arranged at the discharge end of the filter material cleaning device and is connected with the two discharge chutes 63, a swinging baffle is arranged in the discharge reversing valve, and the on-off of the two discharge chutes is switched through the baffle; the two discharge chutes respectively face the filter material air-lifting pipelines 4 on two sides of the track 5, and the filter material air-lifting pipelines 4 are provided with blanking leading grooves 48, so that the filter materials can fall conveniently.

A first cylindrical screen 67 and a second cylindrical screen 68 are erected on a frame of the filter material cleaning device 6, the first screen and the second screen are coaxially arranged, and the insides of the two screens are communicated; the first screen 67 is connected with the feed inlet 64, and the second screen 68 is connected with the discharge reversing valve 66; the lower parts of the first screen and the second screen are arranged in the water tanks, a first water tank 69 is arranged below the first screen 67, a second water tank 70 is arranged below the second screen 68, the first water tank is communicated with the second water tank, and the second water tank is higher than the first water tank; the first screen and the second screen are both fixed with material pushing spiral pieces, the material pushing spiral pieces are fixed with a plurality of shoveling plates which are of sheet structures and are uniformly inserted on the circumferences of the material pushing spiral pieces. The first water tank 69 is provided with a water outlet which is connected with a sewage discharge pipeline 84 through the sewage discharge tank 71; an aeration motor 72 is arranged below the filter material cleaning device 6, and fine filter materials separated by the first and second sieve screens can be deposited at the bottom of the water tank and are discharged along with water flow after being stirred by aeration.

The inside round of nozzle that is equipped with of second screen cloth, second screen cloth below is equipped with a washing water pump 80, and washing water pump directly extracts the water above the filtering pond through washing pump inlet tube 81 to link to each other with the inside nozzle of second screen cloth through the pipeline. And the supernatant of the filter tank is utilized to clean the sewage brought from the first screen in the filter material, and the wastewater generated by cleaning flows into the first water tank after being collected by the second water tank and is used as the washing water for the filter material at the first screen. The flushing pump water inlet pipe 81 is connected with the flushing pump 80 through a water inlet pipe flexible section and a drag chain 83 thereof, the flushing pump water inlet pipe 81 is also provided with a lifter 82 for driving the flushing pump water inlet pipe 81 to lift, when the filter material cleaning device 6 moves, the flushing pump water inlet pipe 81 is lifted to be separated from the filter tank, and the interference with the movement of the filter material cleaning device 6 is avoided.

The filter material cleaning device 6 further comprises a driving assembly for driving the first screen 67 and the second screen 68 to roll, so that the first screen and the second screen roll in respective water tanks, and the internal material propelling spiral sheets rotate synchronously. The driving assembly comprises a motor 73 arranged on the rack, the motor is positioned on the side surface of the first screen, a driving gear is fixed on the motor, a driven gear 74 is arranged on the side surface of the first screen 67, and the driving gear is meshed with the driven gear; one end of the first screen 67 is provided with a first rolling ring 75, the other end of the first screen is connected with a second screen through a second rolling ring, two groups of riding wheels 76 are arranged on the frame, and the first screen and the second screen are erected on the riding wheels of the frame through the rolling rings.

The filter material cleaning device is also provided with a control cabinet 78 and an operation cabinet 79, each functional module is contained in the control cabinet 78, the control cabinet can be operated manually on the operation cabinet to control the filter material cleaning device to advance, clean and other work, the whole cleaning process can be operated manually or fully automatically through wireless communication and remote control, and the control mode can be set.

The filter material gas stripping pipeline 4 consists of a discharge pipe 41, a gas stripping device 42, a feed pipe 43 and an air inlet valve 49, the discharge pipe 41 and the feed pipe 43 are respectively positioned at the upper end and the lower end of the gas stripping device 42, and the gas stripping device is connected with the air inlet valve 49 through the air inlet pipe; a protective sleeve 44 is arranged on the outer side of the filter material gas stripping pipeline, a water inlet valve 50 is arranged above the protective sleeve, and the water inlet valve is communicated with the discharging protective sleeve through a pipeline; and a pressure-bearing protective cover 45 is arranged below the protective sleeve.

When the pneumatic conveying pipeline needs to be maintained, the water inlet valve is opened firstly, so that the water level in the protective sleeve is higher than the water level of an external solid material accumulation layer or the material position, then the pneumatic conveying pipeline is slowly lifted, meanwhile, the water inlet valve continuously feeds water, the water level in the protective sleeve is always higher than the outside in the lifting process, the high inside and the low outside of the pressure are ensured, after the pneumatic conveying pipeline is dismantled, the water inlet valve stops feeding water, the inside and the outside of the protective sleeve are communicated, and the water level is as high; the flow of the solid material is generated by the flow of water, so that the material can not or can not enter the pipe in a small amount as long as the water level in the pipe is not lower than the outside, and the material can not enter the pipe in a large amount as long as the water level in the pipe is not higher than the conical pipe joint. After the pneumatic conveying pipeline is repaired, the pneumatic conveying pipeline is directly hoisted back into the protective sleeve on the original path.

The pressure-bearing protective cover 45 is of a horn-shaped structure with a downward opening, the pressure-bearing protective cover is divided into an inner layer and an outer layer, the inner layer is fixed on the outer side of the protective sleeve, and the outer layer is provided with a water distributor 46 which comprises a plurality of water distribution arms which are uniformly distributed; the water distributor 46 is connected with a first-stage water inlet pipe 47 through a water flow channel between the inner layer and the outer layer of the pressure-bearing protective cover.

When the filter material in the filter tank is activated carbon, the filter material has two functions of adsorption and filtration, the activated carbon can be adsorbed to reach a saturated state when used for a certain time, and the activated carbon filter material needs to be discharged out of the filter tank, namely the operation of waste discharge. When the filter tanks are multi-stage, only the first stage filter tank has the operation of waste material discharge, and the waste material discharged from the next stage filter tank is discharged to the previous stage and is a new material of the previous stage. For example, the waste material discharged from the secondary filter 2 is discharged into the filter material cleaning device of the primary filter 1 through the secondary discharge pipeline 21 and the primary feed pipe 11, and is discharged above each stripping point after being cleaned.

The primary filter 1 is provided with a waste discharge point in the middle of every four air stripping points, a waste discharge point protective cover 14 is arranged above the waste discharge points, waste at the bottom in the filter is discharged out of the filter through a primary discharge pipeline 12 in an air stripping mode, and when multiple filters are connected in parallel, the primary discharge pipeline behind the filter is collected into a pipeline and then conveyed to a waste collection position.

During sewage treatment, incoming water enters the water inlet header pipes of the tanks through the water distribution channels, is redistributed to each tank body of the primary filter tank 1, enters the 4 water distributors 46 in the tank through the primary water inlet pipe 47, and is distributed through the radially distributed water distribution arms; after passing through the water distributor 46, the water flows upwards through the filter material layer 3, pollutants in the water are gradually intercepted or adsorbed, the water is gradually cleaned, and finally the water flows out of the water outlet weir 13 at the top, passes through the secondary water inlet pipe 22 and goes to the secondary filter 2 for continuous treatment.

Claims (8)

1. The utility model provides a sharing filter material belt cleaning device's filtering pond, includes a plurality of cell bodies of parallelly connected setting, its characterized in that: a plurality of filter material air-lifting pipelines distributed in rows and columns are arranged in each tank body, and the filter material air-lifting pipelines are at least divided into two rows; at least one group of rails is laid above the tank body, the rails are positioned in the middle of two rows of filter material air stripping pipelines, and the filter material cleaning device is placed on the rails; the filter material cleaning device is provided with a power assembly which drives the filter material cleaning device to move above the same stage of the tank body along the track; the discharge end of the filter material cleaning device is provided with a discharge reversing valve, the discharge reversing valve is connected with two discharge chutes, and the discharge chutes face the filter material air stripping pipelines on two sides of the track respectively.

2. A filter chamber of a shared filter material cleaning apparatus as defined in claim 1, wherein: the feeding end of the filter material cleaning device is provided with two feeding holes, and a lifting assembly for driving the feeding holes to lift is arranged below the feeding holes; when the filter material cleaning device moves along the track, the feed inlet is at a low position, and when the filter material cleaning device moves to a working position, the feed inlet rises to be connected with the filter material air stripping pipeline.

3. A filter chamber of a shared filter material cleaning apparatus according to claim 2, wherein: the filter material cleaning device further comprises a first cylindrical screen and a second cylindrical screen, the first screen and the second screen are coaxially arranged, the two screens are communicated with each other, the first screen is connected with the feed inlet, and the second screen is connected with the discharge reversing valve.

4. A filter chamber of a common filter material cleaning apparatus according to claim 3, wherein: the lower parts of the first screen and the second screen are arranged in the water tank, and material propelling spiral plates are fixed in the first screen and the second screen; the device is characterized by also comprising a driving assembly for driving the first screen and the second screen to roll, wherein the first screen and the second screen roll in respective water tanks, and the internal material propelling spiral piece synchronously rotates.

5. A filter chamber of a shared filter material cleaning apparatus as defined in claim 1, wherein: the filter material air-stripping pipeline consists of a discharge pipe, an air-stripping device, a feed pipe and an air inlet valve, wherein the discharge pipe and the feed pipe are respectively positioned at the upper end and the lower end of the air-stripping device, and the air-stripping device is connected with the air inlet valve through the air inlet pipe; a protective sleeve is arranged on the outer side of the filtering material gas stripping pipeline, a water inlet valve is arranged above the protective sleeve, and the water inlet valve is communicated with the discharging protective sleeve through a pipeline; and a pressure-bearing protective cover is arranged below the protective sleeve.

6. A filter chamber of a common filter material cleaning device according to claim 5, wherein: the pressure-bearing protective cover is of a horn-shaped structure with a downward opening, the pressure-bearing protective cover is divided into an inner layer and an outer layer, the inner layer is fixed on the outer side of the protective sleeve, and the outer layer is provided with a water distributor which comprises a plurality of water distribution arms which are uniformly distributed; the water distributor is connected with a water inlet pipe through a water flow channel between the inner layer and the outer layer of the pressure-bearing protective cover.

7. A filter chamber of a shared filter material cleaning apparatus as defined in claim 1, wherein: the filter material air-stripping pipelines positioned on the same side of the rail are grouped in pairs, and a blanking pipe is arranged between the two filter material air-stripping pipelines in each group; the blanking pipe is of a splayed structure, and two outlets of the blanking pipe face to the air stripping pipelines of the filter materials on two sides respectively.

8. A filter chamber of a shared filter material cleaning apparatus as defined in claim 1, wherein: a plurality of position sensing blocks are arranged on two sides of the track, and a sensing switch is arranged on the filter material cleaning device and works in a matching mode.

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