Sewage treatment device with stage treatment structure

Abstract

The invention relates to the technical field of sewage treatment equipment, in particular to a sewage treatment device with a staged treatment structure, comprising a base; the top end of the outer wall of the base is fixedly connected with a sedimentation tank body, a biochemical reaction tank body and a disinfection tank body; the sedimentation tank body is connected with the biochemical reaction tank body through a first connecting pipe; the biochemical reaction tank is connected with the disinfection tank through a second connecting pipe; electric control valves are arranged in the first connecting pipe and the second connecting pipe; after sewage is filtered through a grid, the sewage is put into the sedimentation tank body, at the moment, a motor drives a rotating shaft and a cleaning plate to rotate, impurities floating on the surface of the sewage are driven by rotation of the cleaning plate, the impurities move out of the sedimentation tank body and are cleaned, and then the impurities are conveniently moved out of the sedimentation tank body through a cleaning mechanism; the large impurities are cleaned again, so that the sewage treatment difficulty is reduced, and the large impurities are not easy to influence the biodegradation effect.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, and in particular to a sewage treatment device with a hierarchical treatment structure. Background Art

[0002] With the acceleration of urbanization, the discharge of urban sewage has increased significantly, and the demand for sewage treatment has become increasingly urgent. With the enhancement of environmental awareness and the improvement of environmental protection laws and regulations, the requirements for the water quality of sewage treatment effluent are also constantly increasing, making it impossible for simple sewage treatment methods to meet modern environmental protection standards. Sewage treatment devices with a hierarchical treatment structure have emerged. Because it divides the sewage treatment process into multiple stages, each stage treats different pollutants, which not only improves the efficiency of sewage treatment, but also improves the requirements for the water quality of sewage treatment effluent, so that it gradually replaces traditional sewage treatment equipment.

[0003] In the prior art, sewage treatment devices usually directly discharge sewage into a sewage treatment pool for sewage treatment. Since sewage contains a large amount of impurities and garbage, after the sewage passes through the screen to filter the sewage, the sewage still contains large impurities, such as plastic bags, branches, etc. These large impurities will float on the surface of the sewage during sewage treatment, which increases the difficulty of sewage treatment. In addition, large impurities are also likely to affect the effect of biodegradation, thereby reducing the sewage treatment effect. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when sewage treatment devices treat sewage, most of them directly discharge sewage into a sewage treatment pool for sewage treatment. Because the sewage contains a large amount of impurities and garbage, after the sewage passes through the grid to filter the sewage, the sewage still contains large impurities, such as plastic bags, branches, etc. These large impurities will float on the surface of the sewage when the sewage is treated, which increases the difficulty of sewage treatment. In addition, the large impurities are also likely to affect the effect of biodegradation, thereby reducing the treatment effect of the sewage. A sewage treatment device with a hierarchical treatment structure is proposed.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A sewage treatment device with a graded treatment structure comprises a base; a sedimentation tank body, a biochemical reaction tank body and a disinfection tank body are fixedly connected to the top of the outer wall of the base; the sedimentation tank body is connected to the biochemical reaction tank body through a first connecting pipe; the biochemical reaction tank is connected to the disinfection tank through a second connecting pipe; an electric control valve is arranged in both the first connecting pipe and the second connecting pipe; a sand discharge device is fixedly connected to the top of the outer wall of the base, and the sand discharge device is connected to the sedimentation tank body through a third connecting pipe; a support plate is fixedly connected to the top of the outer wall of the base, and the support plate is in an inverted U shape; a motor is fixedly connected to the top of the outer wall of the support plate; a rotating shaft is provided at the output end of the motor, and the bottom end of the outer wall of the rotating shaft passes through the support plate; a group of cleaning plates are fixedly connected to the outer wall of one end of the rotating shaft passing through the support plate; a cleaning mechanism is provided on the outer wall of the cleaning plate; the cleaning mechanism comprises a first annular rack; the cleaning plate is in a mesh shape; the bottom end of the outer wall of the cleaning plate contacts with the top end of the outer wall of the sedimentation tank; the length of the cleaning plate is greater than the radius of the sedimentation tank body.

[0007] As a preferred embodiment of the present invention, the outer side wall of the first annular rack is fixedly connected to the inner side wall of the support plate through a pair of fixed blocks; the outer side wall of the cleaning plate is slidably connected with a cleaning block, and the cleaning block is in an inverted U shape; the outer side wall of the rotating shaft is rotatably connected with a group of reciprocating rods 1, and a group of reciprocating rods 1 respectively penetrates a group of cleaning blocks; a group of the reciprocating rods 1 respectively fits with a group of cleaning blocks; one end of the outer wall of a group of the reciprocating rods 1 is fixedly connected with a first gear, and a group of first gears are meshed with the first annular rack.

[0008] As a preferred embodiment of the present invention, square through grooves are provided on opposite sides of the inner wall of the cleaning block; a pair of cleaning rods are rotatably connected to the bottom ends of the inner walls of the square through grooves, and the top ends of the outer walls of the pair of cleaning rods pass through the cleaning block; a group of brushes are fixedly connected to the outer walls of one end of the pair of cleaning rods located in the square through grooves, and the two groups of brushes are matched with the cleaning plate; a second gear is fixedly connected to the top ends of the outer walls of the pair of cleaning rods; a group of first racks are fixedly connected to the outer wall of the rotating shaft; and a group of first racks are respectively meshed with the two groups of second gears.

[0009] As a preferred embodiment of the present invention, first through grooves are provided on opposite sides of the outer wall of the cleaning block, and a pair of first through grooves are respectively connected with a pair of square through grooves; the inner side walls of a pair of the first through grooves are slidably connected with auxiliary blocks, and a pair of auxiliary blocks are respectively sleeved on the outer side walls of a pair of cleaning rods, and a pair of auxiliary blocks match two groups of brushes; reciprocating rods 2 are rotatably connected to the bottom ends of the opposite sides of the outer wall of the cleaning block through the first square plate, and a pair of reciprocating rods 2 respectively pass through a pair of auxiliary blocks; a pair of reciprocating rods 2 are respectively matched with a pair of auxiliary blocks; a third gear is fixedly connected to the top end of the outer wall of a pair of reciprocating rods 2; two groups of the third gears are respectively meshed with two groups of the second gears; a group of the bottom ends of the outer walls of the cleaning plates are fixedly connected with a collecting shell, and a group of the collecting shells are respectively matched with two groups of auxiliary blocks.

[0010] As a preferred embodiment of the present invention, an air pipe is provided in the biochemical reaction tank body; a rotating column is rotatably connected to the bottom end of the inner wall of the biochemical reaction tank body; the outer wall of the rotating column and the outer wall of the rotating shaft are both fixedly connected to a first sprocket, and a pair of first sprockets are connected by a first chain; an annular block is provided on the outer wall of the rotating column; and a group of stirring plates are fixedly connected to the outer wall of the annular block.

[0011] As a preferred embodiment of the present invention, the inner side wall of the annular block is slidably connected to the outer side wall of the rotating column; the outer side wall of the rotating column is rotatably connected to a reciprocating rotating rod three through a second square plate, and the bottom end of the outer wall of the reciprocating rotating rod three passes through the annular block, and the reciprocating rotating rod three is matched with the annular block; the top end of the outer wall of the reciprocating rotating rod three is fixedly connected to a fourth gear; the top end of the outer wall of the biochemical reaction tank body is fixedly connected to a second annular rack through a connecting block, and the second annular rack and the fourth gear are meshed with each other.

[0012] As a preferred embodiment of the present invention, an activated carbon filter and a fiber filter are arranged in the second connecting pipe; a rotating rod is rotatably connected to the bottom end of the inner wall of the disinfection tank body; the outer wall of the rotating rod and the outer wall of the rotating column are both fixedly connected to a second sprocket; a pair of the second sprockets are connected by a second chain; and a mixing plate is fixedly connected to the outer wall of the rotating rod.

[0013] As a preferred embodiment of the present invention, the outer wall of the rotating rod is fixedly connected with a fifth gear; the bottom end of the inner wall of the disinfection pool body is rotatably connected with a group of first rotating rods, and the group of first rotating rods is in a circular array; the top end of the outer wall of a group of the first rotating rods is fixedly connected with a sixth gear, and a group of sixth gears are meshed with the fifth gear; the outer wall of a group of the first rotating rods is fixedly connected with a group of auxiliary plates.

[0014] As a preferred embodiment of the present invention, the cleaning plate includes a base plate and a movable rod; a group of circular placement grooves are opened at the top of the outer wall of the base plate; a group of outer side walls of the movable rods are slidably placed on the inner side walls of a group of circular placement grooves; the base plate matches the movable rod.

[0015] As a preferred embodiment of the present invention, an impurity shell is fixedly connected to the top end of the outer wall of the base through a group of support columns, and the impurity shell is ring-shaped; the inner wall of the impurity shell is in contact with the outer wall of the sedimentation tank body; a discharge pipe is fixedly connected to the bottom end of the outer wall of the impurity shell, and the discharge pipe is connected to the impurity shell; a scraper is fixedly connected to the bottom end of the outer wall of the cleaning plate, and the outer wall of the scraper matches the inner wall of the impurity shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the cleaning block reciprocates, the movement of the cleaning block drives a pair of cleaning rods and the second gear to move. Because a group of first racks are fixedly connected to the outer wall of the rotating shaft; a group of first racks are respectively meshed with the two groups of second gears, so that when the second gear moves on the first rack, it moves and rotates, so that the second gear drives the cleaning rod to rotate, and the cleaning rod drives the brush to rotate. When the cleaning rod drives the brush to rotate, the cleaning plate can be cleaned more thoroughly, and some impurities that are not easy to be cleaned by the cleaning block are entangled and driven by the rotation of the brush, so that the impurities can be cleaned more quickly and effectively.

[0018] 2. When the two groups of second gears rotate, the two groups of third gears are respectively meshed with the two groups of second gears, so that the rotation of the second gear drives the third gear to rotate, and the third gear drives the reciprocating rod 2 to rotate, and the rotation of the reciprocating rod 2 drives the auxiliary block to reciprocate. When the auxiliary block reciprocates, the auxiliary block will clean the brush on the cleaning rod, so that the impurities entangled on the cleaning rod and the brush are cleaned during the reciprocating motion of the auxiliary block, so that the brush can work for a long time, and the number of times the staff cleans the brush is reduced, which not only reduces the workload of the staff, but also improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is the main structure diagram of the present invention;

[0021] Figure 2 It is a partial structural diagram of the main body of the present invention;

[0022] Figure 3 It is a structural diagram of the motor, the rotating shaft, the cleaning plate and the first annular rack of the present invention;

[0023] Figure 4 It is a structural diagram of the cleaning plate, cleaning block and reciprocating rod of the present invention;

[0024] Figure 5 It is a structural diagram of the cleaning block, the cleaning rod, the auxiliary block and the reciprocating rod 2 of the present invention;

[0025] Figure 6 It is an exploded structural diagram of the base plate and the movable rod of the present invention;

[0026] Figure 7 It is an exploded structural diagram of the biochemical reaction pool body and the rotating column of the present invention;

[0027] Figure 8 An exploded structural diagram of the fourth gear and the second annular rack of the present invention;

[0028] Fig. 9 It is an exploded structural diagram of the disinfection tank body and the mixing plate of the present invention;

[0029] Fig.10 It is an exploded structural diagram of the sedimentation tank body and the impurity shell of the present invention;

[0030] In the figure: 1, base; 2, sedimentation tank body; 3, biochemical reaction tank body; 4, disinfection tank body; 5, sand removal equipment; 6, support plate; 7, motor; 8, rotating shaft; 9, cleaning plate; 10, first annular rack; 11, cleaning block; 12, reciprocating rod 1; 13, first gear; 14, square slot; 15, cleaning rod; 16, brush; 17, second gear; 18, first rack; 19, first slot; 20, auxiliary block; 21, reciprocating rod 2; 22, third gear; 23, collection shell; 2 4. Air pipe; 25. Rotating column; 26. First sprocket; 27. First chain; 28. Ring block; 29. ​​Stirring plate; 30. Reciprocating rod three; 31. Fourth gear; 32. Second ring rack; 33. Rotating rod; 34. Second sprocket; 35. Second chain; 36. Mixing plate; 37. Fifth gear; 38. First rotating rod; 39. Sixth gear; 40. Auxiliary plate; 901. Base plate; 902. Movable rod; 41. Circular placement groove; 42. Impurity shell; 43. Discharge pipe; 44. Scraper. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1-Figure 9 As shown, a sewage treatment device with a graded treatment structure comprises a base 1; a sedimentation tank body 2, a biochemical reaction tank body 3 and a disinfection tank body 4 are fixedly connected to the top of the outer wall of the base 1; the sedimentation tank body 2 and the biochemical reaction tank body 3 are connected by a first connecting pipe; the biochemical reaction tank and the disinfection tank are connected by a second connecting pipe; electric control valves are arranged in the first connecting pipe and the second connecting pipe; a sand discharge device 5 is fixedly connected to the top of the outer wall of the base 1, and the sand discharge device 5 is connected to the sedimentation tank body 2 through a third connecting pipe; a support plate 6 is fixedly connected to the top of the outer wall of the base 1, and the support plate 6 is in an inverted U shape; a motor 7 is fixedly connected to the top of the outer wall of the support plate 6; a rotating shaft 8 is arranged at the output end of the motor 7, and the bottom end of the outer wall of the rotating shaft 8 passes through the support plate 6; the rotating shaft 8 passes through the support plate 6 A group of cleaning plates 9 are fixedly connected to the outer wall at one end; a cleaning mechanism is provided on the outer wall of the cleaning plate 9; the cleaning mechanism includes a first annular rack 10; the cleaning plate 9 is in a mesh shape; the bottom end of the outer wall of the cleaning plate 9 contacts the top end of the outer wall of the sedimentation tank; the length of the cleaning plate 9 is greater than the radius of the sedimentation tank body 2. After the sewage is filtered through the grid, the sewage is placed in the sedimentation tank body 2. At this time, the motor 7 drives the rotating shaft 8 and the cleaning plate 9 to rotate, so that the impurities floating on the surface of the sewage are driven by the rotation of the cleaning plate 9, so that the impurities move outside the sedimentation tank body 2, the impurities are cleaned, and then through the cleaning mechanism, the impurities are easily moved out of the sedimentation tank body 2, so that larger impurities are cleaned again, thereby reducing the difficulty of sewage treatment and making it less likely for larger impurities to affect the effect of biodegradation.

[0034] An air pipe 24 is provided in the biochemical reaction tank body 3; a rotating column 25 is rotatably connected to the bottom end of the inner wall of the biochemical reaction tank body 3; the outer wall of the rotating column 25 and the outer wall of the rotating shaft 8 are both fixedly connected with a first sprocket 26, and a pair of first sprockets 26 are connected by a first chain 27; an annular block 28 is provided on the outer wall of the rotating column 25; a group of stirring plates 29 are fixedly connected to the outer wall of the annular block 28. When sewage is discharged into the biochemical reaction tank body 3, air is introduced into the sewage through the air pipe 24, so that aerobic microorganisms reproduce and grow in the sewage to form activated sludge, thereby removing organic pollutants in the sewage. When air is introduced into the sewage, since the outer side wall of the rotating column 25 and the outer side wall of the rotating shaft 8 are fixedly connected with the first sprocket 26, and the pair of first sprockets 26 are connected by the first chain 27, when the rotating shaft 8 rotates, the rotation of the rotating shaft 8 drives the rotating column 25 to rotate through the first sprocket 26 and the first chain 27, and the rotation of the rotating shaft 8 drives the annular block 28 and the stirring plate 29 to rotate, thereby stirring the sewage, so that the sewage can be mixed with the air more evenly, so that the reproduction and growth efficiency and effect of aerobic microorganisms in the sewage are further improved, thereby improving the effect and efficiency of sewage treatment.

[0035] The outer wall of the first annular rack 10 is fixedly connected to the inner wall of the support plate 6 through a pair of fixed blocks; the outer wall of the cleaning plate 9 is slidably connected with a cleaning block 11, and the cleaning block 11 is in an inverted U shape; the outer wall of the rotating shaft 8 is rotatably connected with a group of reciprocating rods 12, and a group of reciprocating rods 12 respectively penetrate a group of cleaning blocks 11; a group of reciprocating rods 12 respectively fit with a group of cleaning blocks 11; one end of the outer wall of a group of reciprocating rods 12 is fixedly connected with a first gear 13, and a group of first gears 13 are meshed with the first annular rack 10. When the cleaning plate 9 rotates with the rotating shaft 8, the rotation of the cleaning plate 9 drives the cleaning block 11 to move, and the rotation of the rotating shaft 8 also drives the reciprocating rod 12 to move, so that the cleaning block 11 and the reciprocating rod 12 move synchronously. When the reciprocating rod 12 drives the first gear 13 to move, because a group of first gears 13 are meshed with the first annular rack 10 and the first annular rack 10 is in a fixed state, the first gear 13 passes through the first annular rack 10, rotates while moving, and the first gear 13 drives the reciprocating rod 12 to rotate. The rotation of the reciprocating rod 12 drives the cleaning block 11 to reciprocate, so that the cleaning block 11 cleans the impurities on the outer surface of the cleaning plate 9, so that it is not easy to accumulate more impurities on the cleaning plate 9, and the cleaning block 11 can push the impurities on the cleaning plate 9 when it moves, so that the impurities are moved to the outside of the sedimentation tank body 2 under the push of the cleaning block 11, so that the impurities are easier to be cleaned.

[0036] The inner wall of the annular block 28 is slidably connected to the outer wall of the rotating column 25; the outer wall of the rotating column 25 is rotatably connected to the reciprocating rotating rod 3 30 through the second square plate, and the bottom end of the outer wall of the reciprocating rotating rod 3 30 passes through the annular block 28, and the reciprocating rotating rod 3 30 is matched with the annular block 28; the top end of the outer wall of the reciprocating rotating rod 3 30 is fixedly connected to the fourth gear 31; the top end of the outer wall of the biochemical reaction tank body 3 is fixedly connected to the second annular rack 32 through the connecting block, and the second annular rack 32 and the fourth gear 31 are meshed with each other. When the rotating column 25 drives the annular block 28 and the stirring plate 29 to rotate, the rotating column 25 also drives the reciprocating rotating rod 3 30 and the fourth gear 31 to rotate. The top of the outer wall of 3 is fixedly connected with a second annular rack 32 through a connecting block, and the second annular rack 32 is meshed with the fourth gear 31, so that the fourth gear 31 rotates while rotating through the fixed second annular rack 32 as the rotating column 25 rotates, so that the rotating fourth gear 31 drives the reciprocating rod 30 to rotate, and the rotation of the reciprocating rod 30 drives the annular block 28 to reciprocate, so that the annular block 28 drives the stirring plate 29 to reciprocate, so that the stirring plate 29 moves up and down while rotating, thereby increasing the stirring range of the stirring plate 29, so that the sewage can be more evenly contacted with the air, so that the effect and efficiency of sewage treatment are further improved.

[0037] The inner wall of the cleaning block 11 is provided with square through grooves 14 on both sides; the bottom ends of the inner walls of a pair of square through grooves 14 are rotatably connected to cleaning rods 15, and the top ends of the outer walls of the pair of cleaning rods 15 pass through the cleaning block 11; a pair of cleaning rods 15 are fixedly connected to a group of brushes 16 on the outer wall of one end of the square through groove 14, and the two groups of brushes 16 match the cleaning plate 9; the top ends of the outer walls of the pair of cleaning rods 15 are fixedly connected to a second gear 17; a group of first racks 18 are fixedly connected to the outer wall of the rotating shaft 8; a group of first racks 18 are respectively meshed with the two groups of second gears 17, and when the cleaning block 11 reciprocates, the cleaning block 11 The movement drives a pair of cleaning rods 15 and the second gear 17 to move, because a group of first racks 18 are fixedly connected to the outer side wall of the rotating shaft 8; a group of first racks 18 are respectively meshed with the two groups of second gears 17, so that when the second gear 17 moves on the first rack 18, it moves and rotates, so that the second gear 17 drives the cleaning rod 15 to rotate, and the cleaning rod 15 drives the brush 16 to rotate. When the cleaning rod 15 drives the brush 16 to rotate, the cleaning plate 9 can be cleaned more thoroughly, and some impurities that are not easy to be cleaned by the cleaning block 11 are entangled and driven under the rotation of the brush 16, so that the impurities can be cleaned more quickly and effectively.

[0038] An activated carbon filter and a fiber filter are arranged in the second connecting pipe; a rotating rod 33 is rotatably connected to the bottom end of the inner wall of the disinfection tank body 4; the outer side wall of the rotating rod 33 and the outer side wall of the rotating column 25 are fixedly connected with a second sprocket 34; a pair of second sprockets 34 are connected by a second chain 35; a mixing plate 36 is fixedly connected to the outer side wall of the rotating rod 33. Since an activated carbon filter and a fiber filter are arranged in the second connecting pipe, the sewage is first purified and filtered when it is transported to the disinfection tank body 4 through the second connecting pipe, and since the outer side wall of the rotating rod 33 and the outer side wall of the rotating column 25 are fixedly connected with a second sprocket 34; a pair of second sprockets 34 are connected by a second chain 35, the rotation of the rotating column 25 drives the rotating rod 33 to rotate through the second sprocket 34 and the second chain 35, so that the rotating rod 33 drives the mixing plate 36 to rotate. When the sewage enters the disinfection tank body 4 for disinfection, the rotation of the mixing plate 36 can stir the sewage, so that the sewage is more easily contacted with the disinfection gas or ultraviolet rays for disinfection, thereby killing the pathogenic microorganisms in the sewage.

[0039] The outer wall of the cleaning block 11 is provided with first through grooves 19 on opposite sides, and the pair of first through grooves 19 are respectively connected with the pair of square through grooves 14; the inner side walls of the pair of first through grooves 19 are slidably connected with auxiliary blocks 20, and the pair of auxiliary blocks 20 are respectively sleeved on the outer side walls of the pair of cleaning rods 15, and the pair of auxiliary blocks 20 match the two groups of brushes 16; the bottom ends of the outer wall of the cleaning block 11 on opposite sides are rotatably connected with reciprocating rods 21 through the first square plate, and the pair of reciprocating rods 21 respectively penetrate the pair of auxiliary blocks 20; the pair of reciprocating rods 21 respectively fit with the pair of auxiliary blocks 20; the top ends of the outer walls of the pair of reciprocating rods 21 are fixedly connected with third gears 22; the two groups of third gears 22 are respectively meshed with the two groups of second gears 17; the bottom ends of the outer walls of a group of cleaning plates 9 are fixedly connected with a collecting The collecting shell 23, and one group of collecting shells 23 are matched with the two groups of auxiliary blocks 20 respectively. When the two groups of second gears 17 rotate, because the two groups of third gears 22 are respectively meshed with the two groups of second gears 17, the rotation of the second gear 17 drives the third gear 22 to rotate, and the third gear 22 drives the reciprocating rod 21 to rotate, and the rotation of the reciprocating rod 21 drives the auxiliary block 20 to reciprocate. When the auxiliary block 20 reciprocates, the auxiliary block 20 will clean the brush 16 on the cleaning rod 15, so that the impurities wound on the cleaning rod 15 and the brush 16 are cleaned during the reciprocating motion of the auxiliary block 20, so that the brush 16 can work for a long time, and the number of times the staff cleans the brush 16 is reduced, which not only reduces the workload of the staff, but also improves the work efficiency.

[0040] The cleaning plate 9 includes a base plate 901 and movable rods 902; a group of circular placement grooves 41 are opened at the top of the outer wall of the base plate 901; the outer side walls of a group of movable rods 902 are slidably placed on the inner side walls of a group of circular placement grooves 41; the base plate 901 matches the movable rods 902, and the cleaning plate 9 includes the base plate 901 and the movable rods 902, so that the device can adjust the number of movable rods 902 and the gap between the cleaning plates 9 according to the conditions of the sewage, so that when the cleaning plate 9 is cleaning larger impurities, fewer movable rods 902 can be placed, and when cleaning smaller impurities, more movable rods 902 can be placed, so that the device can adjust the number of movable rods 902 according to the specific conditions of the sewage, so that the sewage can be purified more quickly.

[0041] The outer wall of the rotating rod 33 is fixedly connected with a fifth gear 37; the bottom end of the inner wall of the disinfection tank body 4 is rotatably connected with a group of first rotating rods 38, and the group of first rotating rods 38 is in a circular array; the top of the outer wall of a group of first rotating rods 38 is fixedly connected with a sixth gear 39, and the group of sixth gears 39 are meshed with the fifth gear 37; the outer wall of a group of first rotating rods 38 is fixedly connected with a group of auxiliary plates 40. When the rotating rod 33 rotates, the rotation of the rotating rod 33 drives the fifth gear 37 to rotate. Because the group of sixth gears 39 are meshed with the fifth gear 37, the rotation of the fifth gear 37 The mixing plate 36 can stir the sewage, and the multiple groups of auxiliary plates 40 can cooperate with the mixing plate 36 to stir the sewage, so that the sewage can be more easily contacted with the disinfection gas or ultraviolet rays under the stirring of the mixing plate 36 and the auxiliary plate 40, and the stirring directions of the mixing plate 36 and the auxiliary plate 40 are inconsistent, so that the sewage is not easy to remain in a relatively static state when being stirred, so that the effect of sewage disinfection is better.

[0042] Embodiment 2:

[0043] See also Figure 2-Figure 4 and Fig.10 As shown in the figure, the top of the outer wall of the base 1 is fixedly connected to an impurity shell 42 through a group of support columns, and the impurity shell 42 is ring-shaped; the inner side wall of the impurity shell 42 is in contact with the outer side wall of the sedimentation tank body 2; the bottom end of the outer wall of the impurity shell 42 is fixedly connected to a discharge pipe 43, and the discharge pipe 43 is connected to the impurity shell 42; the bottom end of the outer wall of the cleaning plate 9 is fixedly connected to a scraper 44, and the outer side wall of the scraper 44 matches the inner side wall of the impurity shell 42. When the impurities floating on the sewage move to the outside of the sedimentation tank body 2 with the assistance of the cleaning plate 9 and the cleaning block 11, they will fall into the impurity shell 42, thereby being removed by the impurities. The impurities in the impurity shell 42 are collected so that they will not fly around, thereby reducing the difficulty of cleaning the impurities and making it easier to clean the impurities. When the cleaning plate 9 rotates, the rotation of the cleaning plate 9 drives the scraper 44 to rotate. The rotation of the scraper 44 pushes the impurities in the impurity shell 42, so that the impurities in the impurity shell 42 are pushed to the discharge pipe 43 and fall from the discharge pipe 43, so that the impurities can be collected and processed in a centralized manner, thereby further reducing the difficulty of cleaning the impurities, reducing the workload of the staff and also reducing the work difficulty of the staff on both sides.

[0044] When the present invention is in use, after the sewage is filtered through the grid, the sewage is placed in the sedimentation tank body 2. At this time, the motor 7 drives the rotating shaft 8 and the cleaning plate 9 to rotate, so that the impurities floating on the sewage surface are driven by the rotation of the cleaning plate 9, so that the impurities move outside the sedimentation tank body 2 to clean the impurities. When the cleaning plate 9 rotates with the rotating shaft 8, the rotation of the cleaning plate 9 drives the cleaning block 11 to move, and the rotation of the rotating shaft 8 also drives the reciprocating rotating rod 12 to move, so that the cleaning block 11 and the reciprocating rotating rod 12 move synchronously. When the reciprocating rotating rod 12 drives the first gear 13 to move, because a group of first gears 13 are all connected with the first annular The racks 10 are meshed with each other and are fixed to the first annular rack 10, so that the first gear 13 passes through the first annular rack 10, moves and rotates at the same time, so that the first gear 13 drives the reciprocating rod 12 to rotate, and the rotation of the reciprocating rod 12 drives the cleaning block 11 to reciprocate, so that the cleaning block 11 cleans the impurities on the outer surface of the cleaning plate 9, so that it is not easy to accumulate more impurities on the cleaning plate 9, and when the cleaning block 11 moves, it can push the impurities on the cleaning plate 9, so that the impurities are moved to the outside of the sedimentation tank body 2 under the push of the cleaning block 11, which reduces the difficulty of sewage treatment and makes it difficult for larger impurities to affect the effect of biodegradation.

[0045] When the cleaning block 11 reciprocates, the movement of the cleaning block 11 drives a pair of cleaning rods 15 and the second gear 17 to move, because a group of first racks 18 are fixedly connected to the outer wall of the rotating shaft 8; a group of first racks 18 are respectively meshed with the two groups of second gears 17, so that when the second gear 17 moves on the first rack 18, it moves and rotates, so that the second gear 17 drives the cleaning rod 15 to rotate, and the cleaning rod 15 drives the brush 16 to rotate. When the cleaning rod 15 drives the brush 16 to rotate, the cleaning plate 9 can be cleaned more thoroughly, and some impurities that are not easy to be cleaned by the cleaning block 11 are entangled and driven under the rotation of the brush 16, so that the impurities can be cleaned more quickly and effectively.

[0046] When the impurities floating on the sewage move to the outside of the sedimentation tank body 2 with the assistance of the cleaning plate 9 and the cleaning block 11, they will fall into the impurity shell 42 and be collected by the impurity shell 42, so that the impurities will not fly around, thereby reducing the difficulty of impurity cleaning and making it easier to clean the impurities. When the cleaning plate 9 rotates, the rotation of the cleaning plate 9 drives the scraper 44 to rotate, and the rotation of the scraper 44 will push the impurities in the impurity shell 42, so that the impurities in the impurity shell 42 are pushed to the discharge pipe 43, so that the impurities fall from the discharge pipe 43, so that the impurities can be collected and processed in a centralized manner, thereby further reducing the difficulty of impurity cleaning, reducing the workload of the staff and also reducing the work difficulty of the staff on both sides.

[0047] When the two groups of second gears 17 rotate, because the two groups of third gears 22 are respectively meshed with the two groups of second gears 17, the rotation of the second gear 17 drives the third gear 22 to rotate, and the third gear 22 drives the reciprocating rod 21 to rotate, and the rotation of the reciprocating rod 21 drives the auxiliary block 20 to reciprocate. When the auxiliary block 20 reciprocates, the auxiliary block 20 will clean the brush 16 on the cleaning rod 15, so that impurities wound on the cleaning rod 15 and the brush 16 are cleaned during the reciprocating motion of the auxiliary block 20, so that the brush 16 can work for a long time, and the number of times the staff cleans the brush 16 is reduced, which not only reduces the workload of the staff, but also improves work efficiency.

[0048] Since the cleaning plate 9 includes a base plate 901 and movable rods 902, the device can adjust the number of movable rods 902 and the gap between the cleaning plates 9 according to the conditions of the sewage, so that when the cleaning plate 9 is cleaning larger impurities, fewer movable rods 902 can be placed, and when cleaning smaller impurities, more movable rods 902 can be placed. Therefore, the device can adjust the number of movable rods 902 according to the specific conditions of the sewage, so that the sewage can be purified more quickly.

[0049] After the larger impurities are cleaned, the sewage is precipitated, and the silt and the like are precipitated at the bottom of the sedimentation tank body 2. At this time, the silt is discharged through the sand discharge device 5, and then the preliminarily treated sewage is discharged to the biochemical reaction tank body 3 through the first connecting pipe.

[0050] When sewage is discharged to the biochemical reaction tank body 3, air is introduced into the sewage through the air pipe 24, so that aerobic microorganisms reproduce and grow in the sewage to form activated sludge, thereby removing organic pollutants in the sewage. When air is introduced into the sewage, because the outer wall of the rotating column 25 and the outer wall of the rotating shaft 8 are fixedly connected with the first sprocket 26, and a pair of first sprockets 26 are connected by the first chain 27, when the rotating shaft 8 rotates, the rotation of the rotating shaft 8 drives the rotating column 25 to rotate through the first sprocket 26 and the first chain 27, so that the rotation of the rotating shaft 8 drives the annular block 28 and the stirring plate 29 to rotate, thereby stirring the sewage, so that the sewage can be mixed with the air more evenly, so that the reproduction and growth efficiency and effect of aerobic microorganisms in the sewage are further improved, thereby improving the effect and efficiency of sewage treatment.

[0051] When the rotating column 25 drives the annular block 28 and the stirring plate 29 to rotate, the rotating column 25 also drives the reciprocating rod 30 and the fourth gear 31 to rotate. Because the top of the outer wall of the biochemical reaction tank body 3 is fixedly connected with the second annular rack 32 through the connecting block, and the second annular rack 32 and the fourth gear 31 are meshed with each other, the fourth gear 31 rotates while passing through the fixed second annular rack 32 as the rotating column 25 rotates, so that the rotating fourth gear 31 drives the reciprocating rod 30 to rotate, and the rotation of the reciprocating rod 30 drives the annular block 28 to reciprocate, and the annular block 28 drives the stirring plate 29 to reciprocate, so that the stirring plate 29 moves up and down while rotating, thereby increasing the stirring range of the stirring plate 29, so that the sewage can be more evenly contacted with the air, so that the effect and efficiency of sewage treatment are further improved.

[0052] After the sewage completes the secondary treatment in the biochemical reaction tank body 3, the sewage is transported to the disinfection tank body 4 through the second connecting pipe. Since the second connecting pipe is provided with an activated carbon filter and a fiber filter, the sewage is first purified and filtered when it is transported to the disinfection tank body 4 through the second connecting pipe. In addition, since the outer wall of the rotating rod 33 and the outer wall of the rotating column 25 are fixedly connected with the second sprocket 34; a pair of second sprockets 34 are connected by a second chain 35, so that the rotation of the rotating column 25 drives the rotating rod 33 to rotate through the second sprocket 34 and the second chain 35, and the rotating rod 33 drives the mixing plate 36 to rotate. When the sewage enters the disinfection tank body 4 for disinfection, the rotation of the mixing plate 36 can stir the sewage, so that the sewage is easier to contact with the disinfection gas or ultraviolet rays for disinfection, thereby killing pathogenic microorganisms in the sewage.

[0053] When the rotating rod 33 rotates, the rotation of the rotating rod 33 drives the fifth gear 37 to rotate. Since a group of sixth gears 39 are meshed with the fifth gear 37, the rotation of the fifth gear 37 drives a group of sixth gears 39 to rotate, and a group of sixth gears 39 drives a group of first rotating rods 38 to rotate, and a group of first rotating rods 38 drives multiple groups of auxiliary plates 40 to rotate. When the mixing plate 36 stirs the sewage, the multiple groups of auxiliary plates 40 can cooperate with the mixing plate 36 to stir the sewage, so that the sewage is more easily contacted with the disinfection gas or ultraviolet rays under the stirring of the mixing plate 36 and the auxiliary plate 40, and the stirring directions of the mixing plate 36 and the auxiliary plate 40 are inconsistent, so that the sewage is not easy to remain in a relatively static state when being stirred, so that the effect of sewage disinfection is better.

[0054] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sewage treatment device with a graded treatment structure, comprising a base (1); a sedimentation tank body (2), a biochemical reaction tank body (3) and a disinfection tank body (4) are fixedly connected to the top of the outer wall of the base (1); the sedimentation tank body (2) and the biochemical reaction tank body (3) are connected by a first connecting pipe; the biochemical reaction tank and the disinfection tank are connected by a second connecting pipe; the first connecting pipe and the second connecting pipe are both provided with an electric control valve; a sand discharge device (5) is fixedly connected to the top of the outer wall of the base (1), and the sand discharge device (5) is connected to the sedimentation tank body (2) by a third connecting pipe; characterized in that A support plate (6) is fixedly connected to the top of the outer wall of the base (1), and the support plate (6) is in an inverted U shape; a motor (7) is fixedly connected to the top of the outer wall of the support plate (6); a rotating shaft (8) is provided at the output end of the motor (7), and the bottom end of the outer wall of the rotating shaft (8) passes through the support plate (6); a group of cleaning plates (9) are fixedly connected to the outer wall of one end of the rotating shaft (8) passing through the support plate (6); a cleaning mechanism is provided on the outer wall of the cleaning plate (9); the cleaning mechanism comprises a first annular rack (10); the cleaning plate (9) is in a mesh shape; the bottom end of the outer wall of the cleaning plate (9) contacts with the top end of the outer wall of the sedimentation tank; the length of the cleaning plate (9) is greater than the radius of the sedimentation tank body (2).

2. A sewage treatment device with a hierarchical treatment structure according to claim 1, characterized in that: The outer wall of the first annular rack (10) is fixedly connected to the inner wall of the support plate (6) through a pair of fixing blocks; the outer wall of the cleaning plate (9) is slidably connected to a cleaning block (11), and the cleaning block (11) is in an inverted U shape; the outer wall of the rotating shaft (8) is rotatably connected to a group of reciprocating rotating rods (12), and the group of reciprocating rotating rods (12) respectively penetrates a group of cleaning blocks (11); a group of the reciprocating rotating rods (12) respectively fits with a group of cleaning blocks (11); one end of the outer wall of the group of the reciprocating rotating rods (12) is fixedly connected to a first gear (13), and the group of first gears (13) are mutually meshed with the first annular rack (10).

3. A sewage treatment device with a hierarchical treatment structure according to claim 2, characterized in that: The cleaning block (11) is provided with square through grooves (14) on opposite sides of the inner wall; a pair of cleaning rods (15) are rotatably connected to the bottom ends of the inner walls of the square through grooves (14), and the top ends of the outer walls of the pair of cleaning rods (15) penetrate the cleaning block (11); a group of brushes (16) are fixedly connected to the outer walls of one end of the pair of cleaning rods (15) located in the square through grooves (14), and the two groups of brushes (16) are matched with the cleaning plate (9); a second gear (17) is fixedly connected to the top ends of the outer walls of the pair of cleaning rods (15); a group of first racks (18) are fixedly connected to the outer wall of the rotating shaft (8); and the group of first racks (18) are respectively meshed with the two groups of second gears (17).

4. A sewage treatment device with a hierarchical treatment structure according to claim 3, characterized in that: The cleaning block (11) is provided with first through grooves (19) on opposite sides of the outer wall, and the pair of first through grooves (19) are respectively connected to the pair of square through grooves (14); the inner side walls of the pair of first through grooves (19) are slidably connected to auxiliary blocks (20), and the pair of auxiliary blocks (20) are respectively sleeved on the outer side walls of the pair of cleaning rods (15), and the pair of auxiliary blocks (20) match the two groups of brushes (16); the bottom ends of the outer wall of the cleaning block (11) on opposite sides are rotatably connected to reciprocating rods through the first square plate. Two (21), and a pair of reciprocating rods (21) respectively penetrate a pair of auxiliary blocks (20); a pair of the reciprocating rods (21) respectively match with a pair of auxiliary blocks (20); the top ends of the outer walls of the pair of the reciprocating rods (21) are fixedly connected with a third gear (22); the two groups of the third gears (22) are respectively meshed with the two groups of the second gears (17); the bottom ends of the outer walls of a group of the cleaning plates (9) are fixedly connected with a collecting shell (23), and a group of the collecting shells (23) respectively match with the two groups of the auxiliary blocks (20).

5. The sewage treatment device with a hierarchical treatment structure according to claim 1, characterized in that: An air pipe (24) is arranged inside the biochemical reaction pool body (3); a rotating column (25) is rotatably connected to the bottom end of the inner wall of the biochemical reaction pool body (3); the outer wall of the rotating column (25) and the outer wall of the rotating shaft (8) are both fixedly connected to a first sprocket (26), and a pair of first sprockets (26) are connected via a first chain (27); an annular block (28) is arranged on the outer wall of the rotating column (25); and a group of stirring plates (29) are fixedly connected to the outer wall of the annular block (28).

6. A sewage treatment device with a hierarchical treatment structure according to claim 5, characterized in that: The inner side wall of the annular block (28) is slidably connected to the outer side wall of the rotating column (25); the outer side wall of the rotating column (25) is rotatably connected to a reciprocating rotating rod (30) via a second square plate, and the bottom end of the outer wall of the reciprocating rotating rod (30) passes through the annular block (28), and the reciprocating rotating rod (30) and the annular block (28) are matched; the top end of the outer wall of the reciprocating rotating rod (30) is fixedly connected to a fourth gear (31); the top end of the outer wall of the biochemical reaction tank body (3) is fixedly connected to a second annular rack (32) via a connecting block, and the second annular rack (32) and the fourth gear (31) are meshed with each other.

7. The sewage treatment device with a hierarchical treatment structure according to claim 1, characterized in that: An activated carbon filter and a fiber filter are arranged in the second connecting pipe; a rotating rod (33) is rotatably connected to the bottom end of the inner wall of the disinfection tank body (4); the outer wall of the rotating rod (33) and the outer wall of the rotating column (25) are both fixedly connected to a second sprocket (34); a pair of the second sprockets (34) are connected by a second chain (35); and a mixing plate (36) is fixedly connected to the outer wall of the rotating rod (33).

8. The sewage treatment device with a hierarchical treatment structure according to claim 7, characterized in that: The outer wall of the rotating rod (33) is fixedly connected to a fifth gear (37); the bottom end of the inner wall of the disinfection tank body (4) is rotatably connected to a group of first rotating rods (38), and the group of first rotating rods (38) is in a circular array; the top end of the outer wall of the group of first rotating rods (38) is fixedly connected to a sixth gear (39), and the group of sixth gears (39) are meshed with the fifth gear (37); the outer wall of the group of first rotating rods (38) is fixedly connected to a group of auxiliary plates (40).

9. The sewage treatment device with a hierarchical treatment structure according to claim 1, characterized in that: The cleaning plate (9) comprises a base plate (901) and a movable rod (902); a group of circular placement grooves (41) are provided at the top of the outer wall of the base plate (901); the outer side walls of a group of movable rods (902) are slidably placed on the inner side walls of a group of circular placement grooves (41); the base plate (901) matches the movable rods (902).

10. The sewage treatment device with a hierarchical treatment structure according to claim 1, characterized in that: The top end of the outer wall of the base (1) is fixedly connected to an impurity shell (42) via a group of support columns, and the impurity shell (42) is in a ring shape; the inner wall of the impurity shell (42) is in contact with the outer wall of the sedimentation tank body (2); the bottom end of the outer wall of the impurity shell (42) is fixedly connected to a discharge pipe (43), and the discharge pipe (43) is connected to the impurity shell (42); the bottom end of the outer wall of the cleaning plate (9) is fixedly connected to a scraper (44), and the outer wall of the scraper (44) matches the inner wall of the impurity shell (42).

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