CN111871011A

CN111871011A - Sewage treatment device and process for municipal pipe network

Info

Publication number: CN111871011A
Application number: CN202010694783.3A
Authority: CN
Inventors: 唐科; 靳明
Original assignee: Shenzhen Heshun Da Construction Engineering Co ltd
Current assignee: Shenzhen Heshun Da Construction Engineering Co ltd
Priority date: 2020-07-18
Filing date: 2020-07-18
Publication date: 2020-11-03

Abstract

The application relates to the field of sewage treatment, in particular to a sewage treatment device for a municipal pipe network, which comprises a crushing box, wherein the top of the side wall of the crushing box is communicated with a sewage pipe, and the bottom of the side wall of the crushing box is communicated with a first connecting pipe; a vertical screw rod is rotationally connected in the crushing box; the outer side wall of the screw is connected with a water-stop plate, and a plurality of first water leakage holes are formed in the water-stop plate; a rotary cutting plate is connected in the water-stop plate through a bearing, the shape of the cutting plate is the same as that of the water-stop plate, a plurality of second water leakage holes are formed in the cutting plate, and a plurality of cutting knives for cutting garbage are rotatably connected to the positions, corresponding to the second water leakage holes, on the cutting plate; the side edge of the water-stop sheet is symmetrically provided with a convex block, and the inner side wall of the crushing box is symmetrically provided with a vertical groove which is used for limiting the sliding of the corresponding convex block; the bottom surface of crushing case is provided with the first driving piece of being connected with the screw rod bottom. This application has the effect of dredging the pipeline.

Description

Sewage treatment device and process for municipal pipe network

Technical Field

The application relates to the field of sewage treatment, in particular to a sewage treatment device and a process of a municipal pipe network.

Background

Municipal sewage pipe networks are also increasingly constructed, and sewage in the sewage pipe networks mainly comes from kitchen washing, toilet flushing, bathing, laundry water and the like.

The chinese utility model patent with publication number CN203513442U discloses a sewage purification device for municipal sewage pipe network, which is used for treating sewage discharged from municipal sewage branch pipes into a municipal sewage main pipe, and comprises a plurality of sewage treatment systems connected with the municipal sewage main pipe and a water purification station connected with the sewage treatment systems; wherein, every sewage treatment system is including installing a plurality of sewage treatment pipe on municipal administration sewage house steward, locate the sewage pump on every sewage treatment pipe, with the sewage treatment station of a plurality of sewage treatment union coupling.

In view of the above-mentioned related art, the inventor believes that municipal sewage contains part of domestic waste, which cannot be eliminated after treatment, so that there is a case where a pipeline is easily clogged.

Disclosure of Invention

In order to improve crushing effect, dredge the pipeline, this application provides a sewage treatment plant of municipal pipe network and technology thereof.

First aspect, the application provides a sewage treatment plant of municipal pipe network, adopts following technical scheme:

a sewage treatment device for a municipal pipe network comprises a crushing box, wherein the top of the side wall of the crushing box is communicated with a sewage pipe, and the bottom of the side wall of the crushing box is communicated with a first connecting pipe; a vertical screw rod is rotationally connected in the crushing box; the outer side wall of the screw is connected with a water-stop plate, and a plurality of first water leakage holes are formed in the water-stop plate; a rotary cutting plate is connected in the water-stop plate through a bearing, the shape of the cutting plate is the same as that of the water-stop plate, a plurality of second water leakage holes are formed in the cutting plate, and a plurality of cutting knives for cutting garbage are rotatably connected to the cutting plate corresponding to the second water leakage holes; the side edge of the water-stop sheet is symmetrically provided with a convex block, and the inner side wall of the crushing box is symmetrically provided with a vertical groove which is used for limiting the sliding of the corresponding convex block; the bottom surface of crushing case is provided with the first driving piece of being connected with the screw rod bottom.

Through adopting above-mentioned technical scheme, during the water-stop sheet up-and-down motion, can promote the cutting board that is located the water-stop sheet through rivers and move, the cutting knife can take place the motion in step to carry out broken processing to the rubbish of broken incasement.

Preferably, a space is reserved between the inner side wall of the water-stop sheet and the outer side wall of the cutting plate, a plurality of first magnetic pieces are embedded in the top and the bottom of the inner side wall of the water-stop sheet, and the first magnetic pieces are arranged at intervals; a plurality of second magnetic parts are embedded in the top and the bottom of the outer side wall of the cutting plate, the positions of the first magnetic parts and the positions of the second magnetic parts are matched, and the magnetism of the first magnetic parts and the magnetism of the second magnetic parts are mutually repellent.

Through adopting above-mentioned technical scheme, do not take place the friction with the water-stop sheet when cutting board rotates for cutting board's rotation makes the effect of cutting better.

Preferably, the position of the center of the water stop plate is higher than the position of the top of the side edge of the water stop plate, and the aperture of the second water leakage hole is smaller than that of the first water leakage hole.

Through adopting above-mentioned technical scheme, rubbish firstly passes through first hole that leaks then the second hole that leaks, and rubbish is from the great less process that becomes of volume, when rubbish can not leak the hole through the second, and the cutting knife can constantly rotate and make the volume of rubbish diminish to suitable volume gradually.

Preferably, the top of the inner side wall of the crushing box is communicated with a plurality of first water guide pipes, the sewage pipe is communicated with a plurality of second connecting pipes, the number of the second connecting pipes is the same as that of the first water guide pipes, and one second connecting pipe is communicated with one first water guide pipe; a temporary storage barrel is arranged on one side of the crushing box, and the first connecting pipe is communicated with the temporary storage barrel; the bottom of the temporary storage barrel is communicated with a third connecting pipe; the bottom of the inner side wall of the crushing box is communicated with a plurality of second water guide pipes, a plurality of fourth connecting pipes are communicated with the third connecting pipes, the number of the fourth connecting pipes is the same as that of the second water guide pipes, and one fourth connecting pipe is communicated with one second water guide pipe; the third connecting pipe, the first connecting pipe and the water outlet pipe are connected with water suction pumps; the first connecting pipe is communicated with a water outlet pipe; and valves are arranged on the water outlet pipe, the sewage pipe, the first connecting pipe, the third connecting pipe, the fourth connecting pipes and the second connecting pipes.

Through adopting above-mentioned technical scheme, through the sewage of the bucket of keeping in after will once breaking keep in, carry out secondary crushing's processing to broken incasement with its water conservancy diversion for broken effect is better.

Preferably, one side of the crushing box is provided with a precipitation barrel, the water outlet pipe is communicated with the precipitation barrel, the bottom of the precipitation barrel is communicated with a sludge pipe, and the top of the side wall of the precipitation barrel is communicated with an overflow pipe.

Through adopting above-mentioned technical scheme, put into the flocculating agent in the sedimentation tank and carry out sewage treatment, the silt after the processing flows out from the silt pipe, and the clear water after the layering flows out from the overflow pipe.

Preferably, the inner side wall of the sedimentation barrel is connected with a horizontal connecting piece, and the cross section of the connecting piece is annular; the connecting piece is provided with an air injection pipe, and the air injection pipe is provided with a plurality of air injection holes; the connecting piece is provided with a pressure pump, and the pressure pump is communicated with the gas injection pipe through a hose.

By adopting the technical scheme, the air injection pipe performs air injection treatment on the sewage, so that the mixing of the sewage and the flocculating agent is accelerated, and the precipitation effect is better; in addition, the air injection treatment can clean sludge accumulated at the bottom of the settling tank, so that the sludge pipe is convenient to conduct.

Preferably, a vertical screw rod and a guide rod are arranged in the sedimentation barrel, the connecting piece is in threaded connection with the screw rod, and the guide rod penetrates through the connecting piece; a second driving piece connected with the screw rod is arranged at the bottom of the sedimentation barrel; the connecting piece is provided with a waterproof shell for protecting the pressure pump, the inner side wall of the connecting piece is provided with a connecting groove for placing an air injection pipe, and the air injection hole is arranged at the bottom of the groove far away from the connecting groove; the inside wall of connecting piece is provided with the spout, the spout communicates with the tank bottom of spread groove, the lateral wall that jet-propelled pipe is close to the spread groove rotates and is connected with a plurality of balls, the ball is at the spout internal rotation.

Through adopting above-mentioned technical scheme, when the connecting piece moved along the guide bar, drive the jet-propelled pipe and rotate for jet-propelled direction changes, forms the jet-propelled soon, and then the mixed effect of flocculating agent and sewage is better.

In a second aspect, the application provides a sewage treatment process of a sewage treatment device based on a municipal pipe network, which adopts the following technical scheme:

a sewage treatment process of a sewage treatment device based on a municipal pipe network comprises the following steps:

s1: sewage flows into the crushing box through the sewage pipe, and the cutting knife is used for crushing garbage contained in the sewage;

s2: returning the sewage after the crushing treatment to a crushing box through a temporary storage barrel for secondary crushing treatment;

s3: and the sewage after the secondary crushing treatment is guided to a sedimentation barrel filled with a flocculating agent through a water outlet pipe, sludge generated after reaction is discharged through a sludge pipe, and the upper clear water is discharged through an overflow pipe.

Through adopting above-mentioned technical scheme, sewage is through twice broken handle for the impurity that contains in the sewage is still less, reduces the condition of pipeline jam.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the water-stop plate moves up and down, the cutting plate positioned in the water-stop plate can be pushed to move through water flow, and the cutting knife can synchronously move, so that the garbage in the crushing box is crushed;

2. the cutting plate does not rub the water-stop plate when rotating, so that the rotation of the cutting plate is accelerated, and the cutting effect is better;

3. the sewage after the primary crushing is temporarily stored through the temporary storage barrel, and the sewage is guided to the crushing box to be secondarily crushed, so that the crushing effect is better.

Drawings

FIG. 1 is a schematic view of the overall structure of a municipal pipe network sewage treatment plant according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a crushing box in an embodiment of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic structural view of a water-stop sheet and a cutting sheet in an embodiment of the present application.

Fig. 5 is a cross-sectional view of a settling tank in an embodiment of the present application.

Fig. 6 is a partially enlarged schematic view of a portion B in fig. 5.

FIG. 7 is a cross-sectional view of a mixing tube in an embodiment of the present application.

Description of reference numerals: 1. a crushing box; 11. a sewage pipe; 12. a first connecting pipe; 13. a water outlet pipe; 14. a screw; 15. a first driving member; 16. a groove; 17. a first water conduit; 18. a second connecting pipe; 19. a second water conduit; 2. a water-stop sheet; 21. a first water leakage hole; 22. a bump; 3. cutting the board; 31. a second water leakage hole; 32. a cutting knife; 4. a temporary storage barrel; 41. a third connecting pipe; 42. a fourth connecting pipe; 5. a settling barrel; 51. an overflow pipe; 52. a sludge pipe; 53. a screw rod; 54. a guide bar; 55. a connecting member; 551. connecting grooves; 552. a chute; 56. a gas ejector tube; 561. a gas injection hole; 562. a ball bearing; 57. a waterproof shell; 571. a hose; 58. a second driving member; 6. a mixing tube; 61. opening and closing the opening; 62. opening and closing the door; 63. a seal ring; 64. a first positioning plate; 65. a second positioning plate; 66. a positioning ring; 67. a water leakage cage; 68. a spring; 7. and a frame.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses sewage treatment plant of municipal pipe network. Referring to fig. 1, the sewage treatment device for the municipal pipe network comprises a frame 7 and a crushing box 1 connected to the frame 7, wherein the top of the crushing box 1 is communicated with a sewage pipe 11, and the sewage pipe 11 is communicated with a municipal sewage tank; the bottom of the crushing box 1 is communicated with a first connecting pipe 12.

Referring to fig. 2, the crushing box 1 is cylindrical and hollow, a screw 14 is rotatably connected in the crushing box 1, and the screw 14 is vertically arranged; the outer side wall of the screw 14 is in threaded connection with a water-stop plate 2, the water-stop plate 2 is horizontally arranged, a space for reducing friction generated between the side edge of the water-stop plate 2 and the inner side wall of the crushing box 1 during rotation exists between the side edge of the water-stop plate 2 and the inner side wall, a plurality of first water leakage holes 21 are formed in the water-stop plate 2, and the edge of the water-stop plate 2 corresponding to the first water leakage holes 21 is arranged in a blade shape; the side edges of the water-stop sheet 2 are symmetrically fixed with lugs 22, and the inner side wall of the crushing box 1 is symmetrically provided with vertical grooves 16 which are used for limiting the sliding of the corresponding lugs 22; the bottom surface of crushing case 1 is connected with first driving piece 15, and the output shaft and the screw rod 14 bottom of first driving piece 15 are connected, and first driving piece 15 specifically is the motor. The screw 14 is driven to rotate by the output shaft of the motor through the driving motor, the water-stop sheet 2 can move up and down along the screw 14 through the matching of the convex block 22 and the groove 16, when garbage carried by sewage passes through the first water leakage hole 21, the garbage can be cut by the edge of the blade shape of the first water leakage hole 21, and then the garbage is crushed; and the water-stop sheet 2 can move up and down, so that the cutting effect is better.

Referring to fig. 2, the position of the center of the water-stop sheet 2 is higher than the position of the top of the side edge of the water-stop sheet 2, so that the water-stop sheet 2 plays a better role in guiding sewage.

Referring to fig. 3, in order to achieve better cutting effect, a vertical bearing is connected in the water-stop sheet 2, the screw 14 penetrates through the bearing, a space is formed between the inner side wall of the bearing and the outer side wall of the screw 14, the outer side wall of the bearing is connected with the cutting sheet 3, a space is formed between the inner side wall of the water-stop sheet 2 and the outer side wall of the cutting sheet 3, and the shape of the cutting sheet 3 is the same as that of the water-stop sheet 2; a plurality of second water leakage holes 31 are formed in the cutting plate 3, the edge of the cutting plate 3 corresponding to the second water leakage holes 31 is in a blade shape, and the diameter of each second water leakage hole 31 is smaller than that of the corresponding first water leakage hole 21. The motion of the water-stop sheet 2 can synchronously drive the cutting board 3 to move, and the cutting board 3 can rotate, so that the cutting effect is better.

Referring to fig. 4, a plurality of cutting knives 32 for cutting the garbage are rotatably connected to the cutting plate 3 corresponding to the second water leakage holes 31, edges of the cutting knives 32 far away from the rotating position are arranged in a blade shape, and a space is formed between adjacent cutting knives 32 corresponding to the second water leakage holes 31; when cutting board 3 does not move, correspond second hole 31 that leaks and a plurality of cutting knife 32 and be located the coplanar, rubbish probably flows water to water-stop sheet 2 in, when cutting board 3 moved, cutting knife 32 took place to rotate for the cutting effect is better.

Referring to fig. 4, in order to accelerate the rotation of the cutting plate 3, a plurality of first magnetic members are embedded in the top and the bottom of the inner side wall of the water-stop plate 2, and the first magnetic members are arranged at intervals; a plurality of second magnetic pieces are embedded in the top and the bottom of the outer side wall of the cutting plate 3; the first magnetic part and the second magnetic part are matched in position, and the first magnetic part and the second magnetic part repel magnetically. When the first magnetic member and the second magnetic member are aligned, the maximum force is generated, the maximum jumping amplitude of the cutting board 3 is obtained, and a part of the force is supplied to the cutting board 3 for rotation.

Referring to fig. 2, the top of the inner side wall of the crushing box 1 is communicated with a plurality of first water guide pipes 17, and the plurality of first water guide pipes 17 are positioned on the same horizontal plane and are arranged at intervals; the sewage pipe 11 is communicated with second connecting pipes 18 which are the same as the first water guide pipes 17 in number, the end part, far away from the sewage pipe 11, of the second connecting pipe 18 is communicated with the end part, close to the crushing box 1, of the first water guide pipe 17, and the second connecting pipes 18 correspond to the first water guide pipes 17 one by one.

Referring to fig. 1 and 2, a temporary storage barrel 4 is connected to one side of the frame 7, which is located on the crushing box 1, and one end of the first connecting pipe 12, which is far away from the crushing box 1, is communicated with the temporary storage barrel 4; the bottom of the temporary storage barrel 4 is communicated with a third connecting pipe 41; the bottom of the inner side wall of the crushing box 1 is communicated with a plurality of second water guide pipes 19, and the plurality of second water guide pipes 19 are positioned on the same horizontal plane and are arranged at intervals; the third connecting pipe 41 is communicated with fourth connecting pipes 42 the number of which is the same as that of the second water guide pipes 19, the end part of the fourth connecting pipe 42 far away from the third connecting pipe 41 is communicated with the end part of the second water guide pipe 19 close to the crushing box 1, and the fourth connecting pipes 42 are in one-to-one correspondence with the second water guide pipes 19; the first connecting pipe 12 is communicated with a water outlet pipe 13; valves are arranged on the water outlet pipe 13, the sewage pipe 11, the first connecting pipe 12, the third connecting pipe 41, the fourth connecting pipes 42 and the second connecting pipes 18, and water suction pumps are connected to the third connecting pipe 41, the first connecting pipe 12 and the water outlet pipe 13. Sewage has the rubbish for the first time to flow through cutting plate 3's crushing effect not good, consequently, according to actual need, the rubbish that sewage has can carry out the secondary crushing. Sewage firstly flows into the crushing box 1 from the sewage pipe 11, the second connecting pipe 18 and the first water guide pipe 17, flows into the temporary storage barrel 4 through the first connecting pipe 12 after being crushed, and closes valves on the sewage pipe 11 and the first connecting pipe 12; the sewage in the temporary storage barrel 4 flows into the crushing box 1 again through the third connecting pipe 41, the fourth connecting pipe 42 and the second water guide pipe 19 for secondary crushing treatment, and when the sewage in the crushing box 1 is full, the valve on the water outlet pipe 13 is opened, so that the sewage flows out.

Referring to fig. 2, the first water guiding pipe 17 and the second water guiding pipe 19 are arranged in a bent shape, the bending direction of the first water guiding pipe 17 is the same as the rotating direction of the cutting board 3 when moving from top to bottom, and the bending direction of the second water guiding pipe 19 is the same as the rotating direction of the cutting board 3 when moving from bottom to top.

Referring to fig. 1, one side of the crushing box 1 on the frame 7 is connected with a precipitation barrel 5, a water outlet pipe 13 is communicated with the top of the side wall of the precipitation barrel 5, the bottom of the precipitation barrel 5 is communicated with a sludge pipe 52, the top of the side wall of the precipitation barrel 5 is communicated with an overflow pipe 51, and the sludge pipe 52 and the overflow pipe 51 are both connected with valves. A flocculating agent is put into the settling tank 5 so that the sewage in the settling tank 5 reacts to form sludge, the sludge is discharged from the sludge pipe 52, and the clean water is discharged from the overflow pipe 51.

Referring to fig. 5, in order to enhance the mixing of the flocculant and the sewage, the inner side wall of the precipitation barrel 5 is connected with a horizontal connecting piece 55, the cross section of the connecting piece 55 is annular, and the connecting piece 55 does not influence the circulation of the sewage; the inner side wall of the connecting piece 55 is connected with an air injection pipe 56, the cross section of the air injection pipe 56 is annular, and a plurality of air injection holes 561 are formed in the air injection pipe 56; the top surface of the connecting member 55 is connected to a pressurizing pump, and the pressurizing pump is communicated with the gas injection pipe 56 through a hose 571. The pressurization pump is driven to make the gas be sprayed out from the gas spraying holes 561 through the communication between the hose 571 and the gas spraying pipe 56, thereby increasing the disturbance degree of the sewage in the settling tank 5.

Referring to fig. 5, further, a vertical guide rod 54 is fixed in the sedimentation barrel 5, the guide rod 54 is close to the inner side wall of the sedimentation barrel 5, and the guide rod 54 penetrates through a connecting piece 55; a vertical screw rod 53 is rotatably connected in the sedimentation barrel 5, the screw rod 53 and the guide rod 54 are oppositely arranged, and the screw rod 53 is in threaded connection with a connecting piece 55; a second driving member 58 connected with the screw 53 is fixed at the bottom of the sedimentation barrel 5, and the second driving member 58 is specifically a motor; a waterproof case 57 for protecting the pressure pump is fixed to the connecting member 55. The driving motor, the lead screw 53 rotates to make the connecting piece 55 move up and down, and the gas ejector 56 can move up and down synchronously.

Referring to fig. 5 and 6, a connection groove 551 for placing the gas nozzle 56 is opened on the inner side wall of the connection member 55, and the gas nozzle 561 is disposed away from the groove bottom of the connection groove 551; spout 552 has been seted up to the inside wall of connecting piece 55, spout 552 and the tank bottom intercommunication of connecting groove 551, jet-propelled pipe 56 rotates near the lateral wall of connecting groove 551 and is connected with a plurality of balls 562, ball 562 rotates in spout 552, then when the spray pipe up-and-down motion, also can rotate, make the gaseous direction of blowout change, because hose 571 can take place deformation, measure the sufficient length of hose 571 before the installation, when jet-propelled pipe 56 from last down-motion, jet-propelled pipe 56 clockwise rotation, when jet-propelled pipe 56 from up-motion down, jet-propelled pipe 56 anticlockwise rotation, then hose 571 takes place to twist reverse the back and also can resume deformation.

Referring to fig. 1 and 5, sludge may be deposited on the bottom of the settling cask 5, and after a period of time for settling the wastewater, the valve of the water outlet pipe 13 is closed, and the second driving member 58 is driven to move the air injection pipe 56 in a direction close to the bottom of the settling cask 5, so that the air injection pipe 56 performs air injection treatment on the sludge deposited on the bottom of the settling cask 5, and the sludge is more conveniently discharged from the sludge pipe 52.

Referring to fig. 1 and 7, the end that outlet pipe 13 is close to precipitation bucket 5 is fixed with hybrid tube 6, the tip that outlet pipe 13 was kept away from to hybrid tube 6 communicates with precipitation bucket 5, opening 61 has been seted up at the top of hybrid tube 6, hybrid tube 6 corresponds opening 61 and is located to rotate to be connected with the door 62 that opens and close that covers this opening 61, on the hybrid tube 6 and be located opening 61 and close 61 and locate to be fixed with sealing washer 63, add sealing washer 63 and make opening 62 and be interference fit with hybrid tube 6, then the sealed effect of opening 61 department is better. The side wall of the opening and closing door 62 far away from the mixing pipe 6 is fixed with a first positioning plate 64, the outer side wall of the mixing pipe 6 is fixed with a second positioning plate 65, the first positioning plate 64 and the second positioning plate 65 are close to each other, and the first positioning plate 64 and the second positioning plate 65 are connected with screws. Through the opening and closing port 61, a flocculating agent is put into the mixing pipe 6, and then the flocculating agent is synchronously dispersed into the sedimentation barrel 5 when sewage flows through the mixing pipe 6.

Referring to fig. 7, two positioning rings 66 are fixed to the inner side wall of the mixing pipe 6, and the opening and closing door 62 is positioned between the two positioning rings 66, and the distance between the two positioning rings 66 is greater than the length of the opening and closing door 62 along the length direction of the mixing pipe 6. A water leakage cage 67 is arranged between the two positioning rings 66 in the mixing pipe 6, the diameter of the water leakage cage 67 is larger than the inner diameter of the positioning rings 66, and flocculating agents are arranged in the water leakage cage 67. The springs 68 are fixed on the side walls of the positioning rings 66 close to each other and the inner side wall of the mixing pipe 6, the springs 68 connected to the positioning rings 66 are arranged in a plurality, the length direction of the springs 68 connected to the positioning rings 66 is parallel to the length direction of the mixing pipe 6, the springs 68 connected to the inner side wall of the mixing pipe 6 are arranged in a plurality, and the length direction of the springs 68 connected to the inner side wall of the mixing pipe 6 is parallel to the radius direction of the mixing pipe 6. The movement of the water leakage cage 67 by the elastic deformation of the spring 68 accelerates the mixing of the flocculant and the sewage.

The implementation principle of the sewage treatment device of the municipal pipe network in the embodiment of the application is as follows: sewage flows in broken case 1 through sewage pipe 11, and sewage flows and makes cutting board 3 move with the motion of water-stop sheet 2, then cutting board 3 carries out the processing of cutting to the rubbish that contains in the sewage, and the sewage after once cutting is handled flows in and temporarily stores bucket 4 in, and the water conservancy diversion through fourth connecting pipe 42 is with sewage converge broken case 1 again in, carries out broken processing once more for the broken degree of rubbish is more thorough. After the secondary crushing, the sewage is drained into the sedimentation barrel 5, the sewage is mixed with the flocculating agent, impurities contained in the sewage form sludge to be discharged, and the upper clear water is discharged from the overflow pipe 51.

The embodiment of the application also discloses a sewage treatment process of the sewage treatment device based on the municipal pipe network. The sewage treatment process comprises the following steps:

s1: a flocculating agent is supplemented into the water leakage cage 67 through the opening and closing port 61;

s2: sewage flows into the crushing box 1 through the sewage pipe 11, and the cutting plate 3 and the cutting knife 32 crush garbage contained in the sewage;

s3: the sewage after the crushing treatment flows back to the crushing box 1 through the temporary storage barrel 4 for secondary crushing treatment;

s4: the sewage after the secondary crushing treatment is guided to the sedimentation barrel 5 with the flocculating agent through the water outlet pipe 13, the sludge generated after the reaction is discharged through the sludge pipe 52, and the upper clear water is discharged through the overflow pipe 51.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The sewage treatment device for the municipal pipe network is characterized by comprising a crushing box (1), wherein the top of the side wall of the crushing box (1) is communicated with a sewage pipe (11), and the bottom of the side wall of the crushing box is communicated with a first connecting pipe (12); a vertical screw (14) is rotationally connected in the crushing box (1); the outer side wall of the screw (14) is connected with a water-stop plate (2), and a plurality of first water leakage holes (21) are formed in the water-stop plate (2); a rotary cutting plate (3) is connected in the water-stop plate (2) through a bearing, the shape of the cutting plate (3) is the same as that of the water-stop plate (2), a plurality of second water leakage holes (31) are formed in the cutting plate (3), and a plurality of cutting knives (32) for cutting garbage are rotatably connected to the positions, corresponding to the second water leakage holes (31), of the cutting plate (3); the side edges of the water-stop sheet (2) are symmetrically provided with lugs (22), and the inner side wall of the crushing box (1) is symmetrically provided with vertical grooves (16) which are used for limiting the sliding of the corresponding lugs (22); the bottom surface of the crushing box (1) is provided with a first driving piece (15) connected with the bottom end of the screw rod (14).

2. The sewage treatment device of the municipal pipe network according to claim 2, wherein a space is formed between the inner side wall of the water-stop plate (2) and the outer side wall of the cutting plate (3), a plurality of first magnetic members are embedded in the top and the bottom of the inner side wall of the water-stop plate (2), and the first magnetic members are arranged at intervals; a plurality of second magnetic parts are embedded in the top and the bottom of the outer side wall of the cutting plate (3), the positions of the first magnetic part and the second magnetic part are matched, and the magnetism of the first magnetic part and the magnetism of the second magnetic part are mutually repellent.

3. The sewage treatment device of the municipal pipe network according to claim 2, wherein the center of the water-stop plate (2) is higher than the top of the side of the water-stop plate (2), and the diameter of the second water leakage holes (31) is smaller than that of the first water leakage holes (21).

4. The sewage treatment device of the municipal pipe network according to claim 2, wherein the top of the inner side wall of the crushing tank (1) is communicated with a plurality of first water conduits (17), the sewage pipe (11) is communicated with a plurality of second connecting pipes (18), the number of the second connecting pipes (18) is the same as that of the first water conduits (17), and one second connecting pipe (18) is communicated with one first water conduit (17); a temporary storage barrel (4) is arranged on one side of the crushing box (1), and the first connecting pipe (12) is communicated with the temporary storage barrel (4); the bottom of the temporary storage barrel (4) is communicated with a third connecting pipe (41); the bottom of the inner side wall of the crushing box (1) is communicated with a plurality of second water guide pipes (19), a plurality of fourth connecting pipes (42) are communicated with the third connecting pipe (41), the number of the fourth connecting pipes (42) is the same as that of the second water guide pipes (19), and one fourth connecting pipe (42) is communicated with one second water guide pipe (19); a water outlet pipe (13) is communicated with the first connecting pipe (12); the third connecting pipe (41), the first connecting pipe (12) and the water outlet pipe (13) are connected with water suction pumps; valves are arranged on the water outlet pipe (13), the sewage pipe (11), the first connecting pipe (12), the third connecting pipe (41), the fourth connecting pipes (42) and the second connecting pipes (18).

5. The sewage treatment device of the municipal pipe network according to claim 4, wherein a sedimentation tank (5) is provided at one side of the crushing tank (1), the water outlet pipe (13) is communicated with the sedimentation tank (5), the bottom of the sedimentation tank (5) is communicated with a sludge pipe (52), and the top of the side wall of the sedimentation tank (5) is communicated with an overflow pipe (51).

6. The sewage treatment device of the municipal pipe network according to claim 5, wherein the inner side wall of the settling tank (5) is connected with a horizontal connecting piece (55), and the cross section of the connecting piece (55) is annular; the connecting piece (55) is provided with an air injection pipe (56), and the air injection pipe (56) is provided with a plurality of air injection holes (561); the connecting piece (55) is provided with a pressure pump, and the pressure pump is communicated with the gas injection pipe (56) through a hose (571).

7. The sewage treatment device of the municipal pipe network according to claim 6, wherein a vertical screw rod (53) and a guide rod (54) are arranged in the settling tank (5), the connecting piece (55) is in threaded connection with the screw rod (53), and the guide rod (54) penetrates through the connecting piece (55); the bottom of the sedimentation barrel (5) is provided with a second driving piece (58) connected with the screw rod (53); a waterproof shell (57) for protecting the pressure pump is arranged on the connecting piece (55), a connecting groove (551) for placing an air injection pipe (56) is formed in the inner side wall of the connecting piece (55), and an air injection hole (561) is arranged at the bottom of the groove far away from the connecting groove (551); the inner side wall of the connecting piece (55) is provided with a sliding groove (552), the sliding groove (552) is communicated with the bottom of a connecting groove (551), the side wall of the air injection pipe (56) close to the connecting groove (551) is rotatably connected with a plurality of balls (562), and the balls (562) rotate in the sliding groove (552).

8. The sewage treatment process of the sewage treatment plant based on the municipal pipe network according to any one of claims 1 to 7, comprising the steps of:

s1: sewage flows into the crushing box (1) through the sewage pipe (11), and the cutting knife (32) crushes garbage contained in the sewage;

s2: the sewage after the crushing treatment flows back into the crushing box (1) through the temporary storage barrel (4) to be subjected to secondary crushing treatment;

s3: the sewage after the secondary crushing treatment is guided to a sedimentation barrel (5) filled with flocculating agent through a water outlet pipe (13), the sludge generated after the reaction is discharged through a sludge pipe (52), and the upper clear water is discharged through an overflow pipe (51).