CN220609320U - Sewage filtering tank - Google Patents

Abstract

The utility model discloses a sewage filtering tank which comprises a tank body, filter cloth, a flushing mechanism, a driving device and a plurality of V-shaped filtering frames. When the area with impurities and suspended sediment attached to the filter cloth is washed, other areas of the filter cloth are still covered on the meshes of the filter frame, namely, the process of filtering sewage by the filter cloth cannot be interrupted, and finally, the sewage filter tank can complete the cleaning of the filter cloth without interrupting the sewage filtering work, so that the sewage filter tank is convenient and quick. The flushing mechanism flushes the front and back of the filter cloth, ensures the effect of cleaning the filter cloth, and is more beneficial to improving the efficiency and effect of filtering sewage in the sewage filtering tank as the filter cloth is cleaned more cleanly.

Description

Sewage filtering tank

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sewage filtering tank.

Background

The sewage is deeply treated, the sewage is filtered by adopting a tank body pressure filtration mode and a filler non-pressure gravity filtration mode, most of the used filter materials are horizontally arranged, and the two modes have the following defects: impurities and suspended matters in water can be precipitated on the surface of the filter material, so that the overflow area is gradually reduced until a water flow channel is blocked, the filtering effect is poor, and backwashing is needed at the moment, or the impurities and suspended matters are removed in other modes, so that time and labor are wasted.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the sewage filtering tank which can clean the filtering material in time and has a good filtering effect.

The sewage filtering tank provided by the embodiment of the utility model comprises a tank body, filter cloth, a flushing mechanism, a driving device and a plurality of V-shaped filtering frames. The upper surface of the tank body is provided with a tank cavity, the tank cavity is internally provided with a partition plate, the partition plate divides the tank cavity into a filter cloth flushing chamber and a filter chamber which are distributed left and right, the upper parts of the left end and the right end of the tank cavity are respectively provided with a left supporting roller and a right supporting roller, the top end of the partition plate is provided with an upper steering roller, the lower part of the filter cloth flushing chamber is provided with a lower steering roller and a slag discharge pipe which is communicated with the outside of the tank body, and the filter chamber is communicated with a sewage pipe which is communicated with the outside of the tank body; a plurality of V-shaped filter frames are sequentially arranged on the bottom wall of the filter chamber in an inverted mode along the left-right direction, each filter frame, the front wall of the tank body, the bottom wall of the tank body and the rear wall of the tank body enclose a water purifying cavity, the lower part of each water purifying cavity is communicated with a water purifying pipe outside the tank body, and a plurality of meshes are formed in two inclined walls of each filter frame; the filter cloth is sequentially wound on the left support roller, the right support roller, the lower steering roller and the upper steering roller and is connected end to form a loop, and partial areas of the filter cloth are propped against the inclined walls of all the filter frames so as to cover all the meshes; the flushing mechanism is arranged in the filter cloth flushing chamber and is used for flushing the front side and the back side of the filter cloth; the driving device is used for driving the filter cloth to move along the loop.

Has at least the following beneficial effects: when the area with impurities and suspended sediment attached to the filter cloth is washed, other areas of the filter cloth are still covered on the meshes of the filter frame, namely, the process of filtering sewage by the filter cloth cannot be interrupted, and finally, the sewage filter tank can complete the cleaning of the filter cloth without interrupting the sewage filtering work, so that the sewage filter tank is convenient and quick. The flushing mechanism flushes the front and back of the filter cloth, ensures the effect of cleaning the filter cloth, and is more beneficial to improving the efficiency and effect of filtering sewage in the sewage filtering tank as the filter cloth is cleaned more cleanly.

According to some embodiments of the utility model, the top ends of all the filter frames are provided with upper guide rollers, the lower parts between two adjacent filter frames are provided with lower guide rollers, and the filter cloth is wound on the lower guide rollers and the upper guide rollers alternately.

According to some embodiments of the utility model, the flushing mechanism comprises an upper spray pipe and a lower spray pipe which are both arranged in the filter cloth flushing chamber, wherein the upper spray pipe is provided with an upper spray nozzle facing the front surface of the filter cloth, and the lower spray pipe is provided with a lower spray nozzle facing the back surface of the filter cloth.

According to some embodiments of the utility model, the upper and lower nozzles are oriented at an angle to the direction of movement of the filter cloth.

According to some embodiments of the utility model, the driving device comprises a rotary driving device, a driving roller and a driven roller, the rotary driving device is arranged outside the tank body, the driving roller and the driven roller are both arranged in the tank cavity and clamp the filter cloth, and the output end of the rotary driving device is in transmission connection with the driving roller.

According to some embodiments of the utility model, the rotary driving device is a motor, the motor is arranged on the upper surface of the tank body, and the output end of the motor is connected with the driving roller in a chain transmission or belt transmission mode.

According to some embodiments of the utility model, the apparatus further comprises a suspension deposit layer suction mechanism, wherein the suspension deposit layer suction mechanism comprises a suction manifold, a suction pump arranged on the suction manifold, and a plurality of suction branch pipes which are communicated with the suction manifold, the suction branch pipe extends to the lower part between two adjacent filter frames and is positioned above the filter cloth.

According to some embodiments of the utility model, the tank body is provided with an upper cover for covering the notch of the tank cavity.

According to some embodiments of the utility model, the front side wall or the rear side wall of the tank body is provided with a window in a region corresponding to the filtering chamber.

According to some embodiments of the utility model, the left end of the rear side wall of the tank body is hinged with the left side wall of the tank body, and the right end of the rear side wall of the tank body is connected with the right side wall of the tank body through a chain structure.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a structure of a sewage filter tank with a hidden upper cover according to an embodiment of the present utility model;

FIG. 2 is a schematic sectional view of a sewage filtering tank according to an embodiment of the present utility model;

FIG. 3 is an enlarged partial schematic view of FIG. 2A;

FIG. 4 is a schematic view showing the structure of a filter frame and an upper guide roller in the sewage filtering tank according to the embodiment of the utility model;

FIG. 5 is a schematic diagram of a sewage filtering tank according to an embodiment of the present utility model;

reference numerals: the filter cloth washing device comprises a tank body 100, a partition plate 110, a filter cloth washing chamber 120, an upper spray pipe 121, a lower spray pipe 122, a filter chamber 130, a driving roller 131, a driven roller 132, a left supporting roller 140, a right supporting roller 150, a lower steering roller 160, an upper cover 170, a window 180, an upper steering roller 200, a slag discharging pipe 300, a sewage pipe 400, a filter frame 500, a mesh 510, an upper guide roller 520, a lower guide roller 530, a water purifying cavity 600, a water purifying pipe 700 and a filter cloth 800.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, the present utility model discloses a sewage filtering tank, which comprises a tank body 100, a filter cloth 800, a flushing mechanism, a driving device and a plurality of V-shaped filtering frames 500.

Referring to fig. 2 and 3, a tank cavity is formed on the upper surface of the tank body 100, a partition plate 110 is arranged in the tank cavity, the partition plate 110 divides the tank cavity into a filter cloth flushing chamber 120 and a filter chamber 130 which are distributed left and right, a left support roller 140 and a right support roller 150 are respectively arranged on the upper parts of the left end and the right end of the tank cavity, an upper steering roller 200 is arranged at the top end of the partition plate 110, a lower steering roller 160 and a slag discharge pipe 300 which is communicated with the outside of the tank body 100 are arranged at the lower part of the filter cloth flushing chamber 120, and a sewage pipe 400 which is communicated with the outside of the tank body 100 is arranged in the filter chamber 130;

referring to fig. 2 and 4, a plurality of V-shaped filter frames 500 are sequentially disposed on the bottom wall of the filter chamber 130 in a reverse direction in the left-right direction, each filter frame 500 encloses a water purifying cavity 600 with the front wall of the tank body 100, the bottom wall of the tank body 100 and the rear wall of the tank body 100, the lower part of each water purifying cavity 600 is communicated with a water purifying pipe 700 outside the tank body 100, and a plurality of meshes 510 are arranged on two inclined walls of the filter frame 500;

referring to fig. 2, the filter cloth 800 is sequentially wound around the left support roller 140, the right support roller 150, the lower steering roller 160, and the upper steering roller 200 and is connected end to form a loop, and a partial region of the filter cloth 800 is abutted against the inclined walls of all the filter frames 500 to cover all the mesh holes 510;

the flushing mechanism is arranged in the filter cloth flushing chamber 120 and is used for flushing the front side and the back side of the filter cloth 800;

the driving means is used to drive the filter cloth 800 to move along the circuit.

The sewage to be treated is introduced into the filtering chamber 130 through the sewage pipe 400, and under the gravity of the sewage itself, the sewage can first press the filter cloth 800 against the inclined walls of all the filtering racks 500, that is, all the inclined walls of the filtering racks 500 are covered with the filter cloth 800, and the filter cloth 800 covers all the mesh holes 510 of all the filtering racks 500. Then, water molecules in the sewage pass through the filter cloth 800 and the mesh 510 and enter the water purifying chamber 600, thereby obtaining purified water, which is discharged to the outside of the tank body 100 through the water purifying pipe 700, and impurities and suspended matters in the sewage are intercepted by the filter cloth 800 and cover the front (also called upper surface) of the filter cloth 800.

With the time of filtering sewage increased, the accumulated impurities and suspended matters on the front surface of the filter cloth 800 are more and more, the driving device can be started to drive the filter cloth 800 to move along the loop, when the region with the impurities and suspended matters deposited on the filter cloth 800 enters the filter cloth washing chamber 120, the washing mechanism washes the front and back surfaces of the filter cloth 800, the impurities and suspended matters washed on the filter cloth 800 are discharged out of the tank body 100 through the slag discharging pipe 300, after the region with the impurities and suspended matters deposited on the filter cloth 800 is washed clean, the region with the washed clean on the filter cloth 800 is covered on the mesh 510 of the filter frame 500 again along with the continuous driving of the driving device, and the region with the washed clean on the filter cloth 800 plays a role in filtering sewage again. When the area with impurities and suspended sediment attached to the filter cloth 800 is washed, other areas of the filter cloth 800 still cover the mesh 510 of the filter frame 500, that is, the sewage filtering process of the filter cloth 800 is not interrupted, and finally the sewage filtering tank can complete the cleaning of the filter cloth 800 without interrupting the sewage filtering work, thereby being convenient and quick.

The flushing mechanism flushes the front and back sides of the filter cloth 800, so that the effect of cleaning the filter cloth 800 is guaranteed, and the cleaner the filter cloth 800 is, the more the efficiency and the effect of filtering sewage in the sewage filtering tank are improved. The filter cloth 800 is arranged in the inverted W shape in the filter chamber 130, that is, the filter cloth 800 is folded and distributed, so that the effective filtering area of the filter cloth 800 in the filter chamber 130 is larger in the limited space of the filter chamber 130, thereby being beneficial to improving the filtering efficiency of the sewage filtering tank.

Since each of the filter frames 500 has the same structure and is covered with the filter cloth 800, one filter frame 500, one water purifying chamber 600 and one water purifying pipe 700 correspond to each other, and the number of the filter frames 500, the water purifying chambers 600 and the water purifying pipes 700 is plural, there are two methods of using the sewage filtering tank. In the first method, the sewage pipe 400 pours sewage into the filtering chamber 130, and the water level of the sewage is controlled so that the sewage completely floods all the filtering frames 500 and the filter cloth 800 on the filtering frames 500, and the purified water after once filtering can be obtained by starting all the purified water pipes 700. In the second method, the sewage pipe 400 pours sewage into the filtering chamber 130, and the water level of the sewage is controlled, so that the sewage does not completely submerge any filtering frame 500 and the filter cloth 800 on the filtering frame 500, the sewage firstly enters the area between two adjacent filtering frames 500, the water purifying pipe 700 which does not correspond to the two adjacent filtering frames 500 is started, the sewage at the moment is filtered through the at least three layers of filter cloth 800, and water molecules in the sewage are discharged out of the tank body 100 through the water purifying pipe 700 after passing through the at least three layers of filter cloth 800, so that the water purified by at least three times of filtering is obtained, and the effect of filtering the sewage is ensured.

The longitudinal direction of the left support roller 140, the longitudinal direction of the right support roller 150, the longitudinal direction of the lower steering roller 160, and the longitudinal direction of the upper steering roller 200 are all the front-rear directions, and the inclined surfaces of the filter frame 500 are parallel to the front-rear directions.

It will be appreciated that the location of the sewer 400 may be located between any two adjacently located filter frames 500. The height of the partition plate 110 needs to be high enough but lower than the notch of the tank chamber to avoid sewage from overflowing into the filter cloth washing chamber 120 through the partition plate 110.

It is conceivable that the lower ends of the two inclined planes of the filter frame 500 are detachably connected with the bottom wall of the filter chamber 130 in a sealing manner by the first fastening members, and the front and rear ends of the two inclined planes of the filter frame 500 are respectively connected with the front and rear inner walls of the filter chamber 130 in a sealing manner, so that sewage is prevented from directly entering the water purifying chamber 600 without being filtered by the filter cloth 800. It is further conceivable that sealing strips are provided between the lower ends of the two inclined surfaces of the filter frame 500 and the bottom wall of the filter chamber 130, between the front and rear ends of one inclined surface of the filter frame 500 and the front and rear inner walls of the filter chamber 130, respectively, and between the front and rear ends of the other inclined surface of the filter frame 500 and the front and rear inner walls of the filter chamber 130, respectively.

Referring to fig. 4, the filter frame 500 may be formed by bending a stainless steel plate, wherein both ends of the steel plate are bent to form a V shape, and an included angle formed by both ends of the steel plate may be 15 ° to 45 °. Of course, the filter frame 500 may be formed by splicing two stainless steel plates.

Referring to fig. 2, in some embodiments, the top ends of all the filter frames 500 are provided with upper guide rollers 520, the lower portions between two adjacent filter frames 500 are provided with lower guide rollers 530, the filter cloth 800 is alternately wound on the lower guide rollers 530 and the upper guide rollers 520, the upper guide rollers 520 and the lower guide rollers 530 limit the trend of the filter cloth 800, the filter cloth 800 can be pressed on the inclined plane of the filter frame 500, the filter cloth 800 is prevented from being separated from the inclined plane of the filter frame 500, the filter cloth 800 is ensured to always cover all the meshes 510, and further, the sewage can be prevented from directly passing through the meshes 510 without passing through the filter cloth 800.

It is conceivable that the lengths of the lower guide roller 530 and the upper guide roller 520 are each extended in the front-rear direction. The distance between the lower guide roller 530 and the plane of the similar inclined plane is smaller than or equal to the thickness of the filter cloth 800, and the distance between the upper guide roller 520 and the plane of the similar inclined plane is smaller than or equal to the thickness of the filter cloth 800.

Referring to fig. 1 and 3, in some embodiments, the flushing mechanism includes an upper nozzle 121 and a lower nozzle 122 both disposed in the filter cloth flushing chamber 120, the upper nozzle 121 is provided with an upper nozzle toward the front side of the filter cloth 800, the upper nozzle sprays clean water or other cleaning liquid toward the front side of the filter cloth 800, the clean water or other cleaning liquid can clean impurities and suspended matters on the front side of the filter cloth 800 away, the lower nozzle 122 is provided with a lower nozzle toward the back side of the filter cloth 800, the lower nozzle sprays clean water or other cleaning liquid toward the back side of the filter cloth 800, and the clean water or other cleaning liquid can clean impurities and suspended matters on the back side of the filter cloth 800 away, so that the filter cloth 800 can be reused for filtering sewage again.

The flushing mechanism further comprises a flushing manifold and a flushing pump on the flushing manifold, wherein the upper spray pipe 121 and the lower spray pipe 122 are communicated with the flushing manifold, and the flushing manifold can be communicated with an external water source or a water purifying cavity 600 or a water purifying pipe 700.

In some embodiments, the direction of the upper nozzle and the direction of the lower nozzle form an included angle with the moving direction of the filter cloth 800, that is, the moving direction of the clean water or other cleaning liquid sprayed from the upper nozzle forms an included angle with the moving direction of the filter cloth 800, and the moving direction of the clean water or other cleaning liquid sprayed from the lower nozzle forms an included angle with the moving direction of the filter cloth 800, which is more beneficial to flushing the impurities and suspended matters on the filter cloth 800.

It is conceivable that the orientations of the upper and lower spray nozzles form an obtuse angle with the moving direction of the filter cloth 800, so that the impurities and suspended matters on the filter cloth 800 are washed down and discharged to the outside of the tank body 100 through the slag discharging pipe 300.

The lower turning roller 160 is arranged at the lower end of the left inner side wall of the filter cloth flushing chamber 120, the upper spray pipe 121 is arranged at the upper left of the lower spray pipe 122, and the connecting line of the lower turning roller 160 and the upper turning roller 200 is intersected with the connecting line of the upper spray pipe 121 and the lower spray pipe 122.

Referring to fig. 2, in some embodiments, the driving device includes a rotation driving device, a driving roller 131 and a driven roller 132, the rotation driving device is disposed outside the tank body 100, the rotation driving device does not occupy a space of a groove cavity, the driving roller 131 and the driven roller 132 are both disposed in the groove cavity and clamp the filter cloth 800, an output end of the rotation driving device is in transmission connection with the driving roller 131, and the rotation driving device drives the driving roller 131 to rotate, so as to drive the filter cloth 800 to move.

In some embodiments, the rotary driving device is a motor, the motor is arranged on the upper surface of the tank body, and the output end of the motor is connected with the driving roller 131 in a chain transmission or belt transmission mode.

It will be appreciated that the output end of the motor is provided with a driving sprocket, the driving roller 131 is provided with a driven sprocket, and the driving sprocket and the driven sprocket are connected by a chain. Or the output end of the motor is provided with a driving belt pulley, the driving roller 131 is provided with a driven belt pulley, and the driving belt pulley is connected with the driven belt pulley through a belt.

In the process of filtering the sewage filtering tank, part of impurities and suspended matters are accumulated downwards at the lower part between two adjacent filtering frames 500 and above the filter cloth 800, if not timely pumped away, the efficiency of filtering sewage in the sewage filtering tank is affected. In some embodiments, the sewage filtering tank further comprises a suspended matter deposition layer suction mechanism, the suspended matter deposition layer suction mechanism comprises a suction main pipe, a suction pump arranged on the suction main pipe and a plurality of suction branch pipes which are all communicated with the suction main pipe, the suction branch pipes extend to the lower part between two adjacent filtering frames 500 and are positioned above the filter cloth 800, and the suction pump pumps the lower impurities and suspended matters accumulated between the two adjacent filtering frames 500 out of the tank body 100 through the suction branch pipes and the suction main pipe.

Referring to fig. 5, in some embodiments, the cell body 100 is provided with an upper cover 170 covering the notch of the cell cavity, and the upper cover 170 prevents other objects from falling into the cell cavity.

The front side wall or the rear side wall of the tank body 100 of the upper cover 170 is provided with a window 180 in a region corresponding to the filter chamber 130, and the condition in the filter chamber 130 can be directly seen through the window 180. Of course, the window 180 may also be disposed on the upper cover 170.

In some embodiments, the left end of the rear side wall of the tank body 100 is hinged to the left side wall of the tank body 100, and the right end of the rear side wall of the tank body 100 is connected to the right side wall of the tank body 100 through a chain structure, that is, the rear side wall of the tank body 100 is openable, and the filter cloth flushing chamber 120 and the filter chamber 130 can be opened by opening the rear side wall of the tank body 100, so that the left support roller 140, the right support roller 150, the upper steering roller 200, the lower steering roller 160, the filter frame 500 and the filter cloth 800 can be maintained conveniently.

It can be appreciated that the driving roller 131, the driven roller 132, the left support roller 140, the right support roller 150, the lower steering roller 160, the upper steering roller 200, the lower guide roller 530 and the upper guide roller 520 are provided with baffle rings at both ends, and the baffle rings play a role of limiting the filter cloth 800.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the claims.

Claims (10)

1. Sewage filtering ponds, its characterized in that includes:

the upper surface of the tank body is provided with a tank cavity, the tank cavity is internally provided with a partition plate, the partition plate divides the tank cavity into a filter cloth flushing chamber and a filter chamber which are distributed left and right, the upper parts of the left end and the right end of the tank cavity are respectively provided with a left supporting roller and a right supporting roller, the top end of the partition plate is provided with an upper steering roller, the lower part of the filter cloth flushing chamber is provided with a lower steering roller and a slag discharge pipe which is communicated with the outside of the tank body, and the filter chamber is communicated with a sewage pipe which is communicated with the outside of the tank body;

the filtering frames are arranged on the bottom wall of the filtering chamber in an inverted mode in the left-right direction in sequence, a water purifying cavity is formed by enclosing each filtering frame with the front wall of the tank body, the bottom wall of the tank body and the rear wall of the tank body, a water purifying pipe outside the tank body is communicated with the lower portion of each water purifying cavity, and a plurality of meshes are formed in two inclined walls of each filtering frame;

the filter cloth sequentially winds the left supporting roller, the right supporting roller, the lower steering roller and the upper steering roller and is connected end to form a loop, and partial areas of the filter cloth are propped against the inclined walls of all the filter frames so as to cover all the meshes;

the flushing mechanism is arranged in the filter cloth flushing chamber and is used for flushing the front side and the back side of the filter cloth;

and the driving device is used for driving the filter cloth to move along the loop.

2. The wastewater filtration tank of claim 1, wherein: all the top ends of the filter frames are provided with upper guide rollers, lower guide rollers are arranged at the lower parts between two adjacent filter frames, and the filter cloth is alternately wound on the lower guide rollers and the upper guide rollers.

3. The wastewater filtration tank of claim 1, wherein: the flushing mechanism comprises an upper spray pipe and a lower spray pipe which are both arranged in the filter cloth flushing chamber, wherein an upper spray nozzle facing the front surface of the filter cloth is arranged on the upper spray pipe, and a lower spray nozzle facing the back surface of the filter cloth is arranged on the lower spray pipe.

4. A wastewater filtration tank as claimed in claim 3 wherein: the orientation of the upper nozzle and the orientation of the lower nozzle form an included angle with the moving direction of the filter cloth.

5. The wastewater filtration tank of claim 1, wherein: the driving device comprises a rotary driving device, a driving roller and a driven roller, the rotary driving device is arranged outside the tank body, the driving roller and the driven roller are both arranged in the tank cavity and clamp the filter cloth, and the output end of the rotary driving device is in transmission connection with the driving roller.

6. The wastewater filter tank of claim 5, wherein: the rotary driving device is a motor, the motor is arranged on the upper surface of the tank body, and the output end of the motor is connected with the driving roller in a chain transmission or belt transmission mode.

7. The wastewater filtration tank of claim 1, wherein: the device also comprises a suspended matter sediment layer suction mechanism, wherein the suspended matter sediment layer suction mechanism comprises a suction main pipe, a suction pump arranged on the suction main pipe and a plurality of suction branch pipes which are communicated with the suction main pipe, and the suction branch pipes extend to the lower parts between two adjacent filter frames and are positioned above the filter cloth.

8. The wastewater filtration tank of claim 1, wherein: the tank body is provided with an upper cover for covering the notch of the groove cavity.

9. The wastewater filtration tank of claim 1, wherein: the front side wall or the rear side wall of the tank body is provided with a window in a region corresponding to the filtering chamber.

10. The wastewater filtration tank of claim 1, wherein: the left end of the rear side wall of the tank body is hinged with the left side wall of the tank body, and the right end of the rear side wall of the tank body is connected with the right side wall of the tank body through a chain structure.