CN108328773A - A kind of rainwater treatment device for sponge city - Google Patents

Abstract

The invention relates to the technical field of rainwater treatment equipment for sponge cities, and discloses a rainwater treatment device for sponge cities, including a box body, a water storage tank is fixedly installed at the bottom of the inner wall of the box body, and a water storage tank is fixedly installed on the top of the box body An L-shaped tube is fixedly sleeved, and the top of the L-shaped tube is fixedly connected to the first water inlet. The right end of the L-shaped tube is fixedly sleeved with a U-shaped tube through a fastening sleeve, and the top of the water storage tank is fixed. A settling tank is installed. The rainwater treatment device for the sponge city, through the cooperation between the U-shaped pipe, the first valve and the sedimentation tank, facilitates the mixed substances in the rainwater entering from the first water inlet to pass through the pipe connected to the sedimentation tank. The solid particles are dropped into the sedimentation tank through the mouth, so as to filter out the solid particles and weighed impurities, and then perform initial filtration and cleaning of the inflowing rainwater, so as to avoid the pipeline from being blocked by impurities in the sedimentation tank, so as to facilitate the filtering of impurities Timely processing, not easy to block.

Description

A rainwater treatment device for sponge city

technical field

The invention relates to the technical field of rainwater treatment equipment for sponge cities, in particular to a rainwater treatment device for sponge cities.

Background technique

Sponge city is a new generation of urban stormwater management concept. It refers to the city's good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city". The international general term is "low-impact development stormwater system construction". When it rains, it absorbs, stores, infiltrates, and purifies water, and "releases" the stored water for use when needed. Substantial application of "sponge city" materials, showing excellent water seepage, compression resistance, wear resistance, non-slip, environmental protection, beautiful and colorful, comfortable and easy to maintain, sound absorption and noise reduction, etc., has become a "breathing" urban landscape pavement, and is also effective Alleviate the urban heat island effect, so that the urban pavement is no longer hot.

In order to give full play to the natural ecological functions and artificial intervention functions, effectively control rainwater runoff, and realize the urban development mode of natural storage, natural infiltration, and natural purification, more and more people have begun to pay attention to the rainwater treatment devices used in sponge cities. However, the existing When the rainwater treatment device is used for sewage treatment, it cannot effectively clean up the pollutants and impurities in time, and the existing rainwater treatment device cannot timely discharge the filtered and precipitated impurities, which is easy to cause blockage, which is not conducive to rainwater The long-term use of the treatment device will easily cause the quality of the subsequent rainwater to decline, and it is not conducive to the storage of later rainwater.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a rainwater treatment device for sponge cities, which has the advantages of being convenient for timely processing of filtered impurities, not easy to be blocked, and convenient for flood discharge and storage, and solves the problems of existing rainwater treatment devices During sewage treatment, pollutants and impurities cannot be effectively cleaned up in time, and the existing rainwater treatment device cannot timely dump the filtered and precipitated impurities, which is easy to cause blockage, which is not conducive to the long-term use of the rainwater treatment device. And it is easy to cause the quality of rainwater to be treated later to decline, and it is not conducive to the storage of rainwater in the later stage.

(2) Technical solutions

In order to achieve the above-mentioned purposes of timely processing of filtered impurities, not easy to be blocked, and convenient for flood discharge and storage, the present invention provides the following technical solutions: a rainwater treatment device for a sponge city, including a box body, and the bottom of the inner wall of the box is fixedly installed There is a water storage tank, the top of the box body is fixedly sleeved with an L-shaped tube, the top of the L-shaped tube is fixedly connected with the first water inlet, and the right end of the L-shaped tube is fixedly sleeved with a U Type pipe, the top of the water storage tank is fixedly installed with a sedimentation tank, the top of the sedimentation tank is fixedly connected with the bottom of the U-shaped pipe through the first valve, and the bottom of the inner wall of the box is fixedly installed with a seepage well, so The right side of the infiltration well is in contact with the left side of the water storage tank, and the left side of the water storage tank is fixedly connected to the top of the infiltration well through a connecting pipe. The outer surface of the connecting pipe is movably socketed with a second Valve, the bottom of the inner wall of the box is fixedly installed with the first water treatment chamber, the right side of the water storage tank is fixedly connected with the left side of the first water treatment chamber through the first fixed pipe, and the first fixed pipe A support rod is fixedly installed on the top, a motor is fixedly installed on the top of the support rod, an inclined pipe is fixedly installed on the top of the first fixed pipe, and the inclined pipe is located on the left side of the support rod. The first water treatment chamber The top of the box is fixedly equipped with a feeding port, the bottom of the inner wall of the box is fixedly installed with a second water treatment chamber, the second water treatment chamber is located on the right side of the first water treatment chamber, the first water treatment chamber and the second water treatment chamber The two water treatment chambers are fixedly connected by a second fixed pipe, the middle part of the second fixed pipe is fixedly clamped with a filter device, and the outer surface of the second fixed pipe is movably fitted with a third valve, and the third valve is located at On the left side of the filter device, a disinfection port is fixedly installed on the top of the second water treatment chamber, a first filter screen is fixedly installed on the left side of the second water treatment chamber wall, and a first filter screen is fixedly installed on the right side of the first filter screen. There is a filter cloth, the right side of the filter cloth is provided with a sponge, the bottom of the inner wall of the box is fixedly installed with a flood discharge chamber, and the flood discharge chamber is located on the right side of the second water treatment chamber, and the top of the flood discharge chamber passes through the back flow The pipe is fixedly connected to the top of the second water treatment chamber, the return pipe is located on the right side of the disinfection port, the bottom of the inclined pipe penetrates to the inside of the first fixed pipe, and the left lower part of the inclined pipe is provided with a second inlet. A water outlet, the lower right part of the inclined pipe is provided with a water outlet.

Preferably, the top of the inclined tube is fixedly sleeved with a bearing, the output shaft of the motor is fixedly connected to a rotating shaft, the bearing is movably sleeved with the rotating shaft, and the bottom end of the rotating shaft passes through the inclined tube and extends to the bottom of the inclined tube. internal.

Preferably, a connecting rod is fixedly installed on the outer surface of the rotating shaft, the connecting rod is located inside the inclined tube, a cleaning brush is fixedly installed on the top of the connecting rod, and a second filter is fixedly sleeved inside the inclined tube. net, and the cleaning brush is located inside the second filter net.

Preferably, the number of the second water inlets is two, and the two second water inlets are respectively located on both sides of the rotating shaft, the two second water inlets are parallel to each other, and the two second water inlets have the same size , and the calibers of the two second water inlets are both smaller than the calibers of the water outlets.

Preferably, the number of the connecting rods is four, the size of the four connecting rods is the same, the four connecting rods form a group of two, and the two groups of connecting rods are respectively located on the upper and lower sides of the rotating shaft.

Preferably, a flood discharge pipe is provided between the second water treatment chamber and the flood discharge chamber, the left end of the flood discharge pipe is fixedly connected to the right side of the second water treatment chamber, and the right end of the flood discharge pipe is connected to the left side of the flood discharge chamber. Fixed connection.

Preferably, the included angle between the first fixed pipe and the inclined pipe is 37 degrees, the motor and the inclined pipe are located on the same inclined straight line, and the rotating shaft and the inclined pipe are parallel to each other.

Preferably, the second water treatment chamber has the same shape and volume as the flood discharge chamber, the included angle between the flood discharge pipe and the horizontal plane is 30 degrees, and the left end of the flood discharge pipe is lower than the right end of the flood discharge pipe.

Preferably, the filtering device includes a pipe wall, an annular filter screen is fixedly installed on the front of the pipe wall, a grid plate is fixedly installed on the front side of the pipe wall, and the grid plate is located on the inner side of the annular filter screen, A clamping block is fixedly installed on the front of the wall, and the clamping block is located on the outer side of the annular filter screen.

(3) Beneficial effects

Compared with the prior art, the present invention provides a rainwater treatment device for sponge city, which has the following beneficial effects:

1. The rainwater treatment device for the sponge city, through the cooperation between the U-shaped pipe, the first valve and the sedimentation tank, facilitates the connection of the mixed substances in the rainwater entering from the first water inlet to the sedimentation tank. The mouth of the nozzle will drop the solid particles into the sedimentation tank, thereby filtering out the solid particles and weighed impurities, and then performing primary filtration and cleaning of the inflowing rainwater.

2. The rainwater treatment device for the sponge city facilitates secondary filtration of the rainwater from the first water treatment chamber through the cooperation between the annular filter screen, the grid plate and the third valve in the filter device, thereby Filter out the remaining impurities and chemically clean the rainwater, so that the inflowing rainwater can be effectively treated, and the purification effect is better, which is convenient for later storage.

3. The rainwater treatment device for the sponge city facilitates the excessive rainwater to flow into the flood discharge chamber through the inclined flood discharge pipe, thereby slowing down the waterlogging of the city, and through the first valve and the third valve It is convenient to pour out the sediment and solid impurities in the sedimentation tank, so as to avoid the pipeline from being blocked by the impurities in the sedimentation tank, so that the filtered impurities can be processed in time and not easy to be blocked.

Description of drawings

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

Fig. 2 is the left side view of filter device in structure Fig. 1 of the present invention;

Fig. 3 is a half-sectional view of the inclined tube in Fig. 1 of the structure of the present invention.

In the figure: 1 box body, 2 water storage tank, 3 first water inlet, 4 L-shaped pipe, 5 U-shaped pipe, 6 fastening sleeve, 7 first valve, 8 sedimentation tank, 9 second valve, 10 connecting pipe , 11 seepage well, 12 first fixed pipe, 13 first water treatment chamber, 14 support rod, 15 motor, 16 bearing, 17 inclined pipe, 18 feeding port, 19 third valve, 20 filtering device, 201 pipe wall, 202 annular filter screen, 203 grid plate, 204 block, 21 second water treatment chamber, 22 disinfection port, 23 first filter screen, 24 filter cloth, 25 sponge, 26 flood discharge chamber, 27 flood discharge pipe, 28 return pipe, 29 rotating shafts, 30 connecting rods, 31 cleaning brushes, 32 second filter screens, 33 second water inlets, 34 water outlets, 35 second fixed pipes.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1-3, a rainwater treatment device for a sponge city, including a box body 1, a water storage tank 2 is fixedly installed on the bottom of the inner wall of the box body 1, and an L-shaped pipe 4 is fixedly sleeved on the top of the box body 1 , the top of the L-shaped pipe 4 is fixedly connected with the first water inlet 3, the right end of the L-shaped pipe 4 is fixedly sleeved with the U-shaped pipe 5 through the fastening sleeve 6, and the top of the water storage tank 2 is fixedly installed with a sedimentation tank 8, and the precipitation The top of the tank 8 is fixedly connected to the bottom of the U-shaped pipe 5 through the first valve 7, and the bottom of the inner wall of the box body 1 is fixedly installed with an infiltration well 11, and the right side of the infiltration well 11 is in contact with the left side of the water storage tank 2 The left side of the water storage tank 2 is fixedly connected to the top of the infiltration well 11 through the connecting pipe 10, the outer surface of the connecting pipe 10 is movably socketed with the second valve 9, and the bottom of the inner wall of the tank 1 is fixedly installed with the first water treatment Chamber 13, the right side of the water storage tank 2 is fixedly connected to the left side of the first water treatment chamber 13 through the first fixed pipe 12, the angle between the first fixed pipe 12 and the inclined pipe 17 is 37 degrees, and the motor 15 and the inclined pipe 17 are located on the same inclined straight line, and the rotating shaft 29 and the inclined pipe 17 are parallel to each other, so as to prevent the motor 15 from driving the cleaning brush 31 on the rotating shaft 29 to collide with the inclined pipe 17, thereby ensuring that the motor 15 can normally drive the cleaning brush 31 for cleaning. Work, the top of the first fixed pipe 12 is fixedly installed with a support rod 14, the top of the support rod 14 is fixedly installed with a motor 15, the top of the first fixed pipe 12 is fixedly installed with an inclined pipe 17, and the top of the inclined pipe 17 is fixedly sleeved with The bearing 16 and the output shaft of the motor 15 are fixedly connected with a rotating shaft 29, the bearing 16 and the rotating shaft 29 are movably socketed, the bottom end of the rotating shaft 29 runs through the inclined pipe 17 and extends to the inside of the inclined pipe 17, and the outer surface of the rotating shaft 29 is fixedly installed with a connection Rod 30, the connecting rod 30 is positioned at the inside of the inclined pipe 17, the top of the connecting rod 30 is fixedly equipped with a cleaning brush 31, the inside of the inclined pipe 17 is fixedly sleeved with a second filter screen 32, and the cleaning brush 31 is positioned at the bottom of the second filter screen 32 Inside, the number of connecting rods 30 is four, and the size of the four connecting rods 30 is the same, and the four connecting rods 30 form a group in pairs. The remaining impurities are cleaned, the inclined pipe 17 is located on the left side of the support rod 14, the top of the first water treatment chamber 13 is fixedly installed with a feeding port 18, and the bottom of the inner wall of the box body 1 is fixedly installed with a second water treatment chamber 21, the second A flood discharge pipe 27 is arranged between the water treatment chamber 21 and the flood discharge chamber 26. The left end of the flood discharge pipe 27 is fixedly connected to the right side of the second water treatment chamber 21, and the right end of the flood discharge pipe 27 is fixedly connected to the left side of the flood discharge chamber 26. The second water treatment chamber 21 has the same shape and volume as the flood discharge chamber 26. The angle between the flood discharge pipe 27 and the horizontal plane is 30 degrees. Cleaning, the second water treatment chamber 21 is located on the right side of the first water treatment chamber 13, the first water treatment chamber 13 and the second water treatment chamber 21 are fixedly connected by the second fixed pipe 15, and the middle part of the second fixed pipe 15 is fixedly clamped. Connected with filter device 20, filter device 20 includes pipe wall 201 , the front of the pipe wall 201 is fixedly equipped with an annular filter screen 202, the front of the pipe wall 201 is fixedly equipped with a grid plate 203, the grid plate 203 is located on the inner side of the annular filter screen 202, and the front of the wall 201 is fixedly equipped with a clamping block 204, The clamping block 204 is located on the outside of the annular filter screen 202, so as to facilitate the cleaning of impurities in the rainwater. The outer surface of the second fixed pipe 15 is movably socketed with a third valve 19, and the third valve 19 is located on the left side of the filter device 20. The top of the second water treatment chamber 21 is fixedly equipped with a disinfection port 22, and the left side of the second water treatment chamber 21 inwall is fixedly equipped with a first filter screen 23, and the right side of the first filter screen 23 is provided with a filter cloth 24. The right side of 24 is provided with sponge 25, and the bottom of box body 1 inner wall is fixedly installed flood discharge chamber 26, and flood discharge chamber 26 is positioned at the right side of second water treatment chamber 21, and the top of flood discharge chamber 26 is connected with second water treatment chamber 28 through return pipe 28. The top of the chamber 21 is fixedly connected, the second water treatment chamber 21 has the same shape and volume as the flood discharge chamber 26, and the included angle between the flood discharge pipe 27 and the horizontal plane is 30 degrees, and the left end of the flood discharge pipe 27 is lower than the right end of the flood discharge pipe 27, thus It is convenient to store excessive rainwater in the city and alleviate the waterlogging situation in the city. The return pipe 28 is located on the right side of the disinfection port 22, the bottom of the inclined pipe 17 runs through to the inside of the first fixed pipe 12, and the left lower part of the inclined pipe 17 A second water inlet 33 is provided, the number of the second water inlet 33 is two, and the two second water inlets 33 are respectively located on both sides of the rotating shaft 29, the two second water inlets 33 are parallel to each other, and the two second water inlets 33 are parallel to each other. The water ports 33 have the same size, and the calibers of the two second water inlets 33 are smaller than the calibers of the water outlets 34, so that it is convenient to filter the rainwater in the water storage tank 2, and it is also convenient for the filtered rainwater to be purified in the next step. The inclined pipe 17 A water outlet 34 is provided at the lower right part of the water tank.

When working, first check whether the rainwater treatment device is complete, then open the first valve 7, and the solid impurities in the flowing rainwater will flow from the first valve 7 into the sedimentation tank 8, and then start the motor 15 to facilitate the removal of residual impurities. Filter from the second filter screen 32, then the rainwater flowing out from the first water treatment chamber 13 is filtered twice through the filter device 20, and then the rainwater flowing into the second water treatment chamber 21 is sterilized through the disinfection port 22 , when waterlogging occurs in the city, the rainwater will flow into the flood discharge chamber 26 by the flood discharge pipe 27, that is.

In summary, the rainwater treatment device for the sponge city, through the cooperation between the U-shaped pipe 5, the first valve 7 and the sedimentation tank 8, facilitates the removal of the mixed substances in the rainwater entering from the first water inlet 3 The solid particles are dropped into the settling tank 8 through the nozzle connected to the settling tank 8, thereby filtering out the solid particles and weighed impurities, and then performing initial filtration and cleaning of the inflowing rainwater; The cooperation between the annular filter screen 202, the grid plate 203 and the third valve 19 facilitates secondary filtration of the rainwater from the first water treatment chamber 13, thereby filtering out residual impurities and chemically cleaning the rainwater. material, so that the inflowing rainwater is effectively treated, and then the purification effect is better, which is convenient for later storage; through the inclined flood discharge pipe 27, it is convenient for excessive rainwater to flow into the flood discharge chamber 26 through the inclined flood discharge pipe 27, thereby Slow down the waterlogging in the city, and through the first valve 7 and the third valve 19, it is convenient to pour out the sediment and solid impurities in the sedimentation tank 8, so as to avoid the pipeline from being blocked by the impurities in the sedimentation tank 8, so as to facilitate the filtering of impurities Timely treatment, not easy to block; solve the problem that the existing rainwater treatment device cannot effectively clean up the pollutants and impurities in time during sewage treatment, and the existing rainwater treatment device cannot timely discharge the filtered and precipitated impurities If the treatment is dropped, it is easy to cause blockage, which is not conducive to the long-term use of the rainwater treatment device, and it is easy to cause the quality of the rainwater to be treated later to decline, and it is not conducive to the storage of rainwater in the later period.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1. A rainwater treatment device for a sponge city, comprising a casing (1), characterized in that: the bottom of the casing (1) inner wall is fixedly equipped with a water storage tank (2), and the casing (1) ) is fixedly sleeved with an L-shaped pipe (4), the top of the L-shaped pipe (4) is fixedly connected with the first water inlet (3), and the right end of the L-shaped pipe (4) is passed through the fastening sleeve ( 6) A U-shaped pipe (5) is fixedly sleeved, and a settling tank (8) is fixedly installed on the top of the water storage tank (2). The bottom of the pipe (5) is fixedly connected, and the bottom of the inner wall of the box (1) is fixedly equipped with a seepage well (11), and the right side of the seepage well (11) is connected to the left side of the water storage tank (2). side contact, the left side of the water storage tank (2) is fixedly connected to the top of the infiltration well (11) through the connecting pipe (10), and the outer surface of the connecting pipe (10) is movably socketed with a second valve (9), the bottom of the inner wall of the box body (1) is fixedly equipped with a first water treatment chamber (13), and the right side of the water storage tank (2) is connected to the first water treatment chamber through a first fixed pipe (12) The left side of the chamber (13) is fixedly connected, the top of the first fixed pipe (12) is fixedly installed with a support rod (14), and the top of the support rod (14) is fixedly installed with a motor (15). An inclined pipe (17) is fixedly installed on the top of a fixed pipe (12), and the inclined pipe (17) is positioned at the left side of the support rod (14), and a feeding feeder is fixedly installed on the top of the first water treatment chamber (13). mouth (18), the bottom of the inner wall of the box body (1) is fixedly installed with a second water treatment chamber (21), and the second water treatment chamber (21) is located on the right side of the first water treatment chamber (13), The first water treatment chamber (13) and the second water treatment chamber (21) are fixedly connected through a second fixed pipe (15), and the middle part of the second fixed pipe (15) is fixedly connected with a filter device (20) , the outer surface of the second fixed pipe (15) is movably sleeved with a third valve (19), the third valve (19) is located on the left side of the filtering device (20), and the second water treatment chamber ( The top of 21) is fixedly equipped with a disinfection port (22), and the left side of the second water treatment chamber (21) inwall is fixedly equipped with a first filter screen (23), and the right side of the first filter screen (23) is A filter cloth (24) is provided, a sponge (25) is provided on the right side of the filter cloth (24), and a flood discharge chamber (26) is fixedly installed on the bottom of the inner wall of the casing (1), and the flood discharge chamber (26 ) is located on the right side of the second water treatment chamber (21), and the top of the flood discharge chamber (26) is fixedly connected with the top of the second water treatment chamber (21) by a return pipe (28), and the return pipe (28) Located on the right side of the disinfection port (22), the bottom of the inclined pipe (17) penetrates to the inside of the first fixed pipe (12), and the lower left part of the inclined pipe (17) is provided with a second water inlet (33) , the lower right part of the inclined pipe (17) is provided with a water outlet (34). 2. A rainwater treatment device for sponge city according to claim 1, characterized in that: the top of the inclined pipe (17) is fixedly sleeved with a bearing (16), and the output of the motor (15) The shaft is fixedly connected with a rotating shaft (29), the bearing (16) is movably socketed with the rotating shaft (29), and the bottom end of the rotating shaft (29) runs through the inclined pipe (17) and extends to the inside of the inclined pipe (17). 3. A rainwater treatment device for a sponge city according to claim 2, characterized in that: a connecting rod (30) is fixedly installed on the outer surface of the rotating shaft (29), and the connecting rod (30) is located at Inside the inclined pipe (17), the top of the connecting rod (30) is fixedly equipped with a cleaning brush (31), and the inside of the inclined pipe (17) is fixedly sleeved with a second filter screen (32). The brush (31) is located inside the second filter screen (32). 4. A rainwater treatment device for a sponge city according to claim 1, characterized in that: the number of the second water inlets (33) is two, and the two second water inlets (33) are respectively Located on both sides of the rotating shaft (29), the two second water inlets (33) are parallel to each other, the size of the two second water inlets (33) is the same, and the diameters of the two second water inlets (33) are the same. Smaller than the caliber of the water outlet (34). 5. A kind of rainwater treatment device for sponge city according to claim 3, is characterized in that: the quantity of described connecting rod (30) is four, and the size of four described connecting rods (30) is the same, Two of the four connecting rods (30) form a group, and the two groups of connecting rods (30) are respectively located on the upper and lower sides of the rotating shaft (29). 6. A kind of rainwater treatment device for sponge city according to claim 1, characterized in that: a flood discharge pipe (27) is arranged between the second water treatment chamber (21) and the flood discharge chamber (26), The left end of the flood discharge pipe (27) is fixedly connected to the right side of the second water treatment chamber (21), and the right end of the flood discharge pipe (27) is fixedly connected to the left side of the flood discharge chamber (26). 7. A rainwater treatment device for a sponge city according to claim 1, characterized in that: the angle between the first fixed pipe (12) and the inclined pipe (17) is 37 degrees, The motor (15) and the inclined pipe (17) are located on the same inclined straight line, and the rotating shaft (29) and the inclined pipe (17) are parallel to each other. 8. A rainwater treatment device for a sponge city according to claim 1, characterized in that: the second water treatment chamber (21) has the same shape and volume as the flood discharge chamber (26), and the flood discharge pipe The angle between (27) and the horizontal plane is thirty degrees, and the left end of the flood discharge pipe (27) is lower than the right end of the flood discharge pipe (27). 9. A rainwater treatment device for a sponge city according to claim 1, characterized in that: the filter device (20) includes a pipe wall (201), and the front of the pipe wall (201) is fixedly installed There is an annular filter screen (202), the front of the pipe wall (201) is fixedly equipped with a grid plate (203), and the grid plate (203) is positioned at the inner side of the annular filter screen (202), and the wall (201 ) is fixedly equipped with a block (204), and the block (204) is located on the outside of the annular filter screen (202).