A sedimentation tank for industrial wastewater treatment configured with a desilting mechanism

Abstract

The application discloses a sedimentation tank with a mud removing mechanism for industrial wastewater treatment and relates to the technical field of industrial wastewater treatment.The sedimentation tank comprises a tank body, a water inlet channel is arranged at the center of the tank body, a ring-shaped water outlet groove is arranged on the side wall of the top of the tank body, a plurality of coaxially-arranged segmentation rings are fixedly arranged at the bottom of the tank body, and each segmentation ring is provided with a compression groove; a mud scraping part is arranged in each annular region and can rotate coaxially with the segmentation ring; a fixed tooth ring is fixedly arranged outside the segmentation ring; an active tooth ring is fixedly arranged on the inner side of each mud scraping part; a speed reduction gear is jointly arranged between the active tooth ring and the fixed tooth ring adjacent to the inner side; a compression wheel coaxial with the speed reduction gear is arranged and used for compressing flocs into the compression groove; a driving part is arranged on the top of the tank body; and the tank bottom is provided with coaxial segmentation rings for dividing regions so that the flocs can be settled according to particle size. The mud scraping part is gradually decelerated from the inside to the outside through the speed reduction device, the floc distribution is adapted, the fine flocs are prevented from floating up, and the sedimentation effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial wastewater treatment, in particular to a sedimentation tank with a sludge removal mechanism for industrial wastewater treatment. BACKGROUND

[0002] With the acceleration of industrialization, the problem of excessive heavy metals, high-concentration organic matter and suspended solids (SS) in industrial wastewater is prominent. As the core unit of secondary treatment, the sludge removal efficiency of the sedimentation tank directly affects the effluent quality and the cost of subsequent advanced treatment. In contrast, the radial flow sedimentation tank, through the innovative design of central water inlet-radial flow-peripheral water outlet, significantly outperforms the traditional horizontal flow tank in terms of land area, sedimentation efficiency and effluent stability, especially in scenarios where land is scarce and water quality fluctuates greatly.

[0003] However, in the current design scheme of the radial flow sedimentation tank, the driving device relies on the rigid main beam to drive the integrated scraper to rotate. Due to the difference in the radius of the tank body (generally within the range of 10 to 30 meters), the linear speed of the outer end of the scraper (v=ωR) can reach 3 to 5 times that of the inner end. In the radial flow (central inlet and peripheral outlet) sedimentation tank, the water flow tends to spread from the center to the periphery, and the particle size of the floc gradually decreases as it approaches the edge of the sedimentation tank. To prevent the floc accumulated in the center of the sedimentation tank from undergoing anaerobic reaction, the scraping speed of the inner end of the scraper needs to be maintained at a certain level, which inevitably leads to an increase in the speed of the outer end. Under the disturbance of the relatively high-speed rotation of the outer end of the scraper, the fine floc deposited in the periphery of the sedimentation tank is easily re-floated, which in turn adversely affects the effluent quality. SUMMARY

[0004] The technical solution of the present application provides a sedimentation tank with a sludge removal mechanism for industrial wastewater treatment, which has a tank body with a plurality of split rings coaxially fixed at the bottom of the tank body to divide the bottom into a plurality of annular regions for floc settlement according to particle size. The scraper gradually slows down from the inside to the outside through a reduction gear and a movable tooth ring to adapt to the particle size distribution of the floc, avoiding the problem of excessive speed of the outer end of the scraper in the traditional scheme, which causes the fine floc to float up, and improving the sedimentation effect.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a sedimentation tank with a sludge removal mechanism for industrial wastewater treatment, comprising a tank body, wherein the center of the tank body is provided with a water inlet channel, and the top side wall is provided with an annular drainage groove, characterized in that:

[0006] The split rings are coaxially fixed at the bottom of the tank body and have a plurality of compression grooves, and the bottom of the tank body is divided into a plurality of annular regions by the split rings;

[0007] The scraper is provided in each annular region and can rotate coaxially with the split ring;

[0008] The fixed tooth ring is fixed outside the split ring.

[0009] movable tooth ring, which is fixedly arranged in each of the mud scraping parts;

[0010] reduction gear, which is coaxially rotatable with the adjacent mud scraping part on the inner side; the movable tooth ring and the fixed tooth ring on the inner side are jointly meshed with the reduction gear;

[0011] compression wheel, which is coaxially fixed with the reduction gear and rolls with the split ring to compress the flocculation into the compression groove;

[0012] driving part, which is installed on the top of the pool body and used to drive the mud scraping parts on the inner side of the pool body to rotate;

[0013] The driving part drives the mud scraping parts on the inner side of the pool body to rotate, the mud scraping parts on the inner side of the pool body drive the reduction gears arranged in rotation with them to rotate around the axis of the pool body, the reduction gears rotate and drive the movable tooth rings meshed with them to rotate under the action of the fixed tooth ring, the movable tooth rings drive the mud scraping parts fixedly arranged with them to rotate, and the rotation is sequentially transmitted, so that the mud scraping parts gradually slow down from the inside to the outside.

[0014] As a further scheme of the present application, the compression wheel is coaxially fixed with a gas supply part, the gas supply part is fixedly provided with a connecting pipe installed on the mud scraping part, the connecting pipes on the adjacent mud scraping parts are in communication and relatively rotatable, the driving part is installed with an air inlet pipe, and the air inlet pipe is in communication with the connecting pipes on the inner side of the pool body.

[0015] As a further scheme of the present application, the gas supply part comprises:

[0016] bottom plate, which is eccentrically arranged with the compression wheel through an eccentric wheel, and is provided with an air outlet in communication with the air outlet hole;

[0017] housing, which is rotationally arranged with the bottom plate and fixedly arranged with the mud scraping part; the housing is provided with a cavity in communication with the connecting pipe, and the cavity is provided with an air inlet hole in the side wall;

[0018] fixed blade, which is involute helical, and is fixedly arranged with the housing at the top and the bottom plate at the bottom;

[0019] movable blade, which is involute helical, and is fixedly arranged with the bottom plate at the bottom and the housing at the top, and can form a closed chamber with the fixed blade;

[0020] cross slide rail, which is installed between the driving part and the bottom plate and used to limit the rotation of the movable blade along the axis thereof;

[0021] The bottom plate rotates with the compression wheel and drives the movable blade to rotate, the movable blade and the fixed blade gradually form a closed chamber at the outer side end and move from the side of the air inlet hole to the side of the air outlet hole, and the gas is transported.

[0022] As a further scheme of the present application, a sleeve pipe of a "C" type structure is fixed between the connecting pipes, and adjacent connecting pipes are connected through the sleeve pipes fixed thereto.

[0023] As a further scheme of the present application, the driving part comprises:

[0024] A driving motor is mounted on the top of the pool body through a frame body.

[0025] A driving frame is coaxially arranged in the pool body, and the driving frame is used to drive the mud scraping part inside the pool body to rotate.

[0026] As a further scheme of the present application, a mud collecting groove is arranged at the center of the bottom of the pool body, a circulating stirring frame is coaxially fixed in the mud collecting groove, a circulating scraper is mounted at the bottom of the circulating stirring frame, and the bottom of the circulating scraper is attached to the bottom of the mud collecting groove.

[0027] As a further scheme of the present application, a plurality of water inlet openings are arranged in a circumferential array at the top of the water inlet channel, and a flow stabilizing barrel is mounted on the water inlet openings.

[0028] As a further scheme of the present application, a transfer groove for storing scum is mounted on the top of the pool body, and a collecting plate for collecting scum is rotatably arranged in the pool body; the collecting plate is fixed with the driving frame.

[0029] As a further scheme of the present application, the compression grooves are arranged in a circumferential array, and the compression grooves are in an "eight" shape.

[0030] Compared with the prior art, the present application has the following advantages:

[0031] In the present application, a plurality of split rings are coaxially fixed at the bottom of the pool body, the pool bottom is divided into a plurality of annular regions, so that the floc can enter the corresponding region according to its own particle size when it is settled. At the same time, the mud scraping part transmits kinetic energy from inside to outside in sequence through the reduction gear and the movable tooth ring, so as to realize gradual deceleration from inside to outside, and accurately adapt to the distribution pattern of the floc particle size decreasing from the center to the periphery in the pool. The problem that the peripheral small floc is disturbed to re-float due to the high speed of the outer end of the mud scraping plate in the traditional scheme is avoided, so that the flocs of different particle sizes in the sedimentation tank can be effectively settled and treated, and the sedimentation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical schemes of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0034] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the present application;

[0035] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present application;

[0036] Figure 4 It is a schematic diagram of the partial structure of the present application Figure 3 It is a schematic diagram of the enlarged structure at A in the present application;

[0037] Figure 5 It is a schematic diagram of the partial structure of the present application

[0038] Figure 6 It is a schematic diagram of the explosion structure of the gas supply part of the present application;

[0039] Figure 7 It is a schematic diagram of the driving frame structure of the present application;

[0040] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the pool body of the present application;

[0041] Figure 9 It is a schematic diagram of the enlarged structure at B in the present application Figure 8 It is a schematic diagram of the enlarged structure at B in the present application

[0042] Figure 10 It is a schematic diagram of the movement trajectory of the movable blade in the present application

[0043] In the drawings: 1, pool body; 11, water inlet channel; 12, water outlet groove; 13, water inlet; 14, steady flow barrel; 15, transfer groove; 16, collection plate; 17, sludge collection groove; 18, circulating stirring frame; 19, circulating scraper; 2, division ring; 21, compression groove; 31, mud scraping part; 32, fixed tooth ring; 33, movable tooth ring; 34, speed reduction gear; 35, compression wheel; 4, driving part; 41, driving motor; 42, driving frame; 51, air outlet; 52, connecting pipe; 53, air inlet pipe; 54, sleeve pipe; 6, gas supply part; 61, bottom plate; 62, air outlet; 63, fixed blade; 64, shell; 65, cavity; 66, air inlet; 67, movable blade; 68, cross slide rail; 69, eccentric wheel; 7, chamber. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] Referring to Figures 1-10 The present application provides a technical solution: a sedimentation tank for industrial wastewater treatment with a desilting mechanism, comprising a tank body 1, a water inlet channel 11 is arranged at the center of the tank body 1, and a ring-shaped drainage groove 12 is arranged on the top side wall of the tank body 1; after sewage enters the tank body 1 through the water inlet channel 11 at the center of the tank body 1, it spreads radially to all directions, during which the flocculation in the sewage gradually sinks under the action of gravity. Since the flocculation settling velocity is positively correlated with the particle size, that is, the larger the particle size, the faster the settling, a distribution pattern of decreasing flocculation particle size from the center to the periphery is naturally formed in the tank body 1. After completion of sedimentation, the sewage is discharged from the tank body 1 through the drainage groove 12, and the sedimentation process is completed;

[0046] A plurality of split rings 2 are coaxially fixed at the bottom of the tank body 1, and a compression groove 21 is arranged at the bottom of each split ring 2, so as to divide the bottom of the tank body 1 into a plurality of annular regions; when the flocculation settles, it enters the corresponding region according to its own particle size;

[0047] Each annular region is provided with a mud scraping part 31 which can be coaxially arranged with the split ring 2; the mud scraping part 31 can rotate relative to the split ring 2 around the axis of the tank body 1 to concentrate the flocculation in the region, and in this process, the mud scraping part 31 concentrates the flocculation in a plurality of annular regions;

[0048] A fixed tooth ring 32 is fixedly arranged outside the split ring 2;

[0049] An active tooth ring 33 is fixedly arranged inside each mud scraping part 31;

[0050] A reduction gear 34 can rotate coaxially with the adjacent mud scraping part 31 on the inside; the active tooth ring 33 and the adjacent fixed tooth ring 32 on the inside jointly mesh with the reduction gear 34; see Figure 5 The diameter of the active tooth ring 33 is greater than that of the fixed tooth ring 32, and the rotation speed of the active tooth ring 33 is less than the revolution speed of the reduction gear 34, that is, the rotation speed of the active tooth ring 33 is less than the rotation speed of the mud scraping part 31 on the inside;

[0051] The reduction gear 34 is coaxially fixed with a compression wheel 35, which rolls in contact with the split ring 2 and is used to compress the flocculation into the compression groove 21;

[0052] When the reduction gear 34 rotates, the compression wheel 35 rotates synchronously around the reduction gear 34, and the compression wheel 35 continuously compresses the flocculation collected outside the split ring 2 into the compression groove 21. After compression, the flocculation adheres to form a block, the particle size increases, and moves to the center of the tank body 1 by one region, and circulates repeatedly until it is moved to the center of the tank body 1 and discharged in batches;

[0053] A driving part 4 is installed at the top of the tank body 1 to drive the mud scraping part 31 on the inside of the tank body 1 to rotate;

[0054] The driving part 4 drives the mud scraping part 31 at the innermost side of the pool body 1 to rotate, the mud scraping part 31 at the innermost side of the pool body 1 drives the reduction gear 34 connected thereto to rotate around the axis of the pool body 1, the reduction gear 34 rotates under the action of the fixed gear ring 32, and the movable gear ring 33 engaged with the reduction gear 34 rotates in the opposite direction, the movable gear ring 33 drives the mud scraping part 31 fixed thereto to rotate synchronously, and the mud scraping part 31 sequentially transmits kinetic energy from inside to outside through the reduction gear 34 and the movable gear ring 33, so that the plurality of mud scraping parts 31 gradually decelerate from inside to outside, and are matched with the particle size distribution of the floc; the floc gathered at the center bottom of the pool body 1 is discharged from the bottom pipeline;

[0055] The mud removing mechanism of the sedimentation tank can ensure that the floc in the central area of the pool body 1 is cleaned in time, effectively avoid the hardening and anaerobic reaction caused by the delay in cleaning, prevent the deterioration of the effluent quality, the damage of the pool body 1 structure, the increase of the operation difficulty and the influence on the subsequent treatment, and realize the accurate decrease of the mud scraping speed from the center of the pool body 1 to the periphery, so as to avoid the small particle size floc at the periphery of the pool body 1 from floating again and being discharged with the water flow. Not only the industrial wastewater treatment efficiency is greatly improved, but also the effluent quality is significantly improved, and the operation cost is reduced, thereby providing an efficient, stable and reliable solution for the industrial wastewater treatment field.

[0056] As a further scheme of the present application, the compression wheel 35 is coaxially provided with a gas supply part 6, the gas supply part 6 is uniformly provided with a connecting pipe 52 mounted on the mud scraping part 31, the connecting pipes 52 on adjacent mud scraping parts 31 are connected and can rotate relative to each other, and the driving part 4 is provided with an air inlet pipe 53 connected with the connecting pipes 52 inside the pool body 1;

[0057] Specifically, the air inlet pipe 53 can deliver external gas into the innermost connecting pipe 52, the innermost connecting pipe 52 delivers the gas into the compression wheel 35 through the gas supply part 6 connected thereto, and the gas is input into the bottom of the pool body 1 through the circumferentially arrayed gas outlet holes 51. The compression wheel 35 rotates around the outer side wall of the split ring 2 attached thereto, and can deliver the gas to the position where the floc is collected in each area (i.e. near the outer side wall of the split ring 2), thereby avoiding the anaerobic reaction of the collected floc and preventing the problems such as the deterioration of the effluent quality and the damage of the pool structure 1.

[0058] As a further scheme of the present application, the gas supply part 6 comprises:

[0059] The bottom plate 61 is eccentrically arranged with the compression wheel 35 through the eccentric wheel 69, and the bottom plate 61 is provided with an exhaust port 62 connected with the gas outlet hole 51;

[0060] The shell 64 is rotationally arranged with the bottom plate 61 and fixed with the mud scraping part 31; the shell 64 is provided with a cavity 65 connected with the connecting pipe 52 at the top, and the cavity 65 is provided with an air inlet hole 66 at the side wall.

[0061] The fixed blade 63 is involute spiral-shaped, and the top is fixedly arranged with the shell 64, and the bottom is attached to the bottom plate 61;

[0062] The movable blade 67 is involute spiral-shaped, and the bottom is fixedly arranged with the bottom plate 61, and the top is attached to the shell 64. The movable blade 67 and the fixed blade 63 can form a closed cavity 7 therebetween;

[0063] The cross rail 68 is installed between the driving part 4 and the bottom plate 61, and is used for limiting the rotation of the cross rail 68 along the axis thereof;

[0064] The bottom plate 61 rotates with the compression wheel 35 and drives the movable blade 67 to rotate. The movable blade 67 and the outer side end of the fixed blade 63 gradually form the closed cavity 7, and move from the side of the air inlet hole 66 to the side of the air outlet hole 62, thereby completing the gas conveying;

[0065] Referring to Figure 5 and Figure 6 During the mud removal process, the bottom plate 61 rotates with the compression wheel 35. Since the bottom plate 61 is limited by the cross rail 68, the bottom plate 61 can only perform eccentric circular translation (i.e., revolution around the axis of the compression wheel 35) around the axis of the compression wheel 35. In this process, the bottom plate 61 drives the movable blade 67 to move synchronously, and the specific movement track can be referred to Figure 10 With the movement of the movable blade 67, a crescent-shaped cavity 7 is gradually formed between the fixed blade 63 and the movable blade 67. The cavity 7 moves from the air inlet hole 66 end to the air outlet hole 62 end, and the volume gradually decreases in this process. Based on such movement changes, the gas suction, compression and discharge processes are realized.

[0066] Through the above process, the gas can be continuously conveyed to the flocculation accumulation area at the bottom of the pool body 1. On the one hand, the continuous input of the gas can effectively prevent the anaerobic reaction of the flocculation accumulation area, thereby reducing the adverse effects on the water quality. On the other hand, since the gas can be continuously and stably conveyed, the flocculation can be prevented from blocking the air outlet hole 51 to a certain extent, thereby ensuring the normal operation of the equipment and the smooth conveying of the gas.

[0067] As a further scheme of the present application, the connecting pipes 52 are fixedly arranged with sleeve pipes 54 of “C” type structure, and adjacent connecting pipes 52 are connected in communication through the sleeve pipes 54 fixedly arranged therewith. The sleeve pipes 54 can connect adjacent connecting pipes 52 in communication, and the adjacent connecting pipes 52 can rotate relative to each other.

[0068] As a further scheme of the present application, the driving part 4 comprises:

[0069] The driving motor 41 is installed on the top of the pool body 1 through the frame body;

[0070] The driving frame 42 is coaxially arranged in the pool body 1, and is used to drive the mud scraping part 31 inside the pool body 1 to rotate;

[0071] Specifically, during the operation of the device, the driving motor 41 is started and drives the driving frame 42 to rotate, the driving frame 42 directly drives the innermost mud scraping part 31 to rotate, and the innermost mud scraping part 31 is driven by the meshing transmission of the speed reducer 34 and the movable gear ring 33, and the kinetic energy is sequentially transmitted to the subsequent mud scraping parts 31 from inside to outside; the rotation effect of gradually reducing the speed of the mud scraping parts 31 from inside to outside is realized.

[0072] In this transmission structure, the driving frame 42 only needs to bear the task of driving the innermost mud scraping part 31 to rotate, compared with the main beam of the existing integrated mud scraping plate, the axial length of the driving frame 42 is greatly shortened, so that when the driving frame 42 rotates, the water flow far away from the central area of the pool body 1 is almost not disturbed by the driving frame 42, and since the degree of disturbance of the water flow is reduced, the interference of the water flow to the flocculation settling velocity is also reduced, thereby effectively reducing the adverse effects of the driving frame 42 on the water flow direction and the flocculation settling velocity, and finally significantly improving the sedimentation efficiency of the sedimentation tank.

[0073] As a further scheme of the present application, the pool body 1 is provided with a mud collecting groove 17 at the bottom center, and the driving frame 42 is coaxially fixed with a circulating stirring frame 18 located in the mud collecting groove 17, and the circulating stirring frame 18 is provided with a circulating scraper 19 at the bottom, and the bottom of the circulating scraper 19 is attached to the bottom of the mud collecting groove 17.

[0074] Specifically, the flocculation gathered in the center of the pool body 1 is concentrated in the mud collecting groove 17 under the action of gravity, the driving frame 42 drives the circulating scraper 19 to rotate by the circulating stirring frame 18, so that the flocculation in the mud collecting groove 17 is in a flowing state, avoiding the flocculation from being hardened in the mud collecting groove 17, which causes the flocculation to be unable to be discharged; the stirring of the flocculation by the circulating scraper 19 can also avoid the vortex at the discharge position of the flocculation, which causes part of the water to be discharged together with the flocculation, increases the water content of the flocculation, and increases the difficulty and cost of processing the flocculation.

[0075] Specifically, during the sedimentation process, the flocculation gathered in the center of the pool body 1 is concentrated and falls into the mud collecting groove 17 under the joint action of gravity and the mud scraping part 31, and the driving frame 42 drives the circulating stirring frame 18 to rotate, and then drives the circulating scraper 19 to rotate.

[0076] The continuous rotation of the circulating scraper 19 can keep the floc in the sludge collecting tank 17 in a flowing state. On the one hand, it can effectively prevent the floc from being hardened due to long-term static in the sludge collecting tank 17. Once the floc is hardened, it will be difficult to be discharged from the sludge collecting tank 17, affecting the normal operation of the entire sedimentation tank. On the other hand, the stirring effect of the circulating scraper 19 on the floc can also prevent vortexes from forming at the floc discharge position. If vortexes occur, part of the water will be discharged together with the floc, which not only increases the water content of the discharged floc, but also further increases the difficulty and cost of subsequent floc treatment.

[0077] As a further scheme of the present application, the top of the water inlet channel 11 is provided with water inlets 13 arranged in a circumferential array, and the water inlets 13 are installed with flow stabilizing barrels 14; the circumferential array of water inlets 13 can make the water flow uniformly into the tank from the circumferential direction of the tank body 1. Compared with a single water inlet 13 or an asymmetric water inlet mode, this design can avoid the phenomenon of local concentration or flow deviation of water flow in the tank, making the water flow distribution of the entire sedimentation tank more uniform, and creating good hydraulic conditions for the subsequent sedimentation process;

[0078] The flow stabilizing barrels 14 can further adjust the flow state of the water flow, making the water flow entering the sedimentation tank more stable. It can reduce the turbulence and vortex of the water flow, prevent the water flow from forming short flow (i.e. the water flow quickly passes through the sedimentation tank without undergoing a sufficient sedimentation process) in the tank, thereby ensuring that the sewage has sufficient residence time in the sedimentation tank and improving the sedimentation effect.

[0079] As a further scheme of the present application, the tank body 1 is installed with a transfer tank 15 for storing scum at the top, and a collecting plate 16 for collecting scum is rotatably arranged in the tank body 1, and the collecting plate 16 is fixedly arranged with a driving frame 42;

[0080] The collecting plate 16 rotates by the power of the driving frame 42, and since the collecting plate 16 is arranged in a rotating manner, it can make regular circumferential motion at the top of the tank body 1.

[0081] During the rotation of the collecting plate 16, the scum floating on the liquid surface can be continuously driven into the transfer tank 15. The transfer tank 15 stably and orderly discharges the collected scum out of the tank body 1 through a pre-installed pipe. Compared with the traditional fixed collecting device, the fixed collecting device can only collect scum in a specific area, and the coverage is limited, which can easily lead to the scum in some areas of the tank body 1 not being cleaned in time. The rotatable collecting plate 16 can cover a larger area of the tank body 1 with circumferential motion, and it can flexibly reach every corner of the tank body 1, ensuring that the scum in each area of the tank body 1 can be effectively collected, greatly improving the comprehensiveness and efficiency of scum collection, and providing a strong guarantee for the cleaning and normal operation of the tank body 1.

[0082] As a further scheme of the present application, the compression grooves 21 are arranged in a circumferential array, and the compression grooves 21 are in the shape of an "eight" character. The side with a larger opening of the "eight" character-shaped compression grooves 21 can more smoothly receive the flocculation, so that the flocculation has a smaller resistance when entering the compression grooves 21, and the accumulation and blockage of the flocculation at the inlet are reduced. At the same time, the gradually narrowing groove shape can guide the flocculation to move in an orderly manner to the outlet direction, which conforms to the flow law of the fluid in the compression process, and improves the smoothness of the flocculation compression.

Claims

1. Industrial wastewater treatment sedimentation tank with mud removing mechanism, comprising a tank body (1), the center of which is provided with a water inlet channel (11), and the top side wall of which is provided with an annular water outlet groove (12), characterized in that: a plurality of split rings (2) are coaxially fixed at the bottom of the tank body (1), each split ring (2) is provided with a compression groove (21), and the bottom of the tank body (1) is divided into a plurality of annular areas by the split rings (2); a mud scraping part (31) capable of rotating coaxially with the split ring (2) is arranged in each annular area; a fixed tooth ring (32) is fixed outside the split ring (2); an active tooth ring (33) is fixed inside each mud scraping part (31); a speed reduction gear (34) is coaxially rotatable with the adjacent mud scraping part (31) on the inside; the active tooth ring (33) and the adjacent fixed tooth ring (32) on the inside are jointly meshed with the speed reduction gear (34); a compression wheel (35) is coaxially fixed with the speed reduction gear (34) and rolls in close contact with the split ring (2), and is used for compressing the floc into the compression groove (21); a driving part (4) is installed on the top of the tank body (1) and is used for driving the mud scraping part (31) on the inside of the tank body (1) to rotate; the driving part (4) drives the mud scraping part (31) on the inside of the tank body (1) to rotate, the mud scraping part (31) on the inside of the tank body (1) drives the speed reduction gear (34) rotatingly arranged therewith to rotate around the axis of the tank body (1), the speed reduction gear (34) rotates by the action of the fixed tooth ring (32) and drives the active tooth ring (33) meshed therewith to rotate, the active tooth ring (33) drives the mud scraping part (31) fixed therewith to rotate, and the rotation is sequentially transmitted, so that the plurality of mud scraping parts (31) gradually decelerate from the inside to the outside. The side wall of the compression wheel (35) is provided with a plurality of circumferentially arranged air outlet holes (51), the compression wheel (35) is coaxially fixed with a gas supply part (6), the gas supply part (6) is fixed with a connecting pipe (52) installed on the mud scraping part (31), the connecting pipes (52) on the adjacent mud scraping parts (31) are in communication and can rotate relative to each other, an air inlet pipe (53) is installed on the driving part (4), and the air inlet pipe (53) is in communication with the connecting pipes (52) on the inside of the tank body (1). The gas supply part (6) comprises: a bottom plate (61) eccentrically arranged with the compression wheel (35) through an eccentric wheel, and provided with an air outlet (62) in communication with the air outlet hole (51); an outer shell (64) rotatably arranged with the bottom plate (61) and fixed with the mud scraping part (31); the outer shell (64) is provided with a cavity (65) in communication with the connecting pipe (52) on the top, and the side wall of the cavity (65) is provided with an air inlet hole (66); a fixed blade (63) in the shape of an involute spiral, fixed with the outer shell (64) on the top and in close contact with the bottom plate (61) on the bottom; an active blade (67) in the shape of an involute spiral, fixed with the bottom plate (61) on the bottom and in close contact with the outer shell (64) on the top, and capable of forming a sealed chamber (7) with the fixed blade (63). ​ ​ 2. The sedimentation tank for industrial wastewater treatment equipped with a desilting mechanism according to claim 1, characterized in that: ​ 3. The sedimentation tank for industrial wastewater treatment equipped with a desludging mechanism according to claim 2, characterized in that: ​ ​ ​ ​ ​ Cross slide rail (68), mounted between the drive part (4) and the bottom plate (61); for limiting the movable blade (67) rotation along its own axis; The bottom plate (61) rotates with the compression wheel (35) and drives the movable blade (67) to rotate, the movable blade (67) and the outer side end of the fixed blade (63) gradually form a closed chamber (7), and move from the air inlet hole (66) to the air outlet (62), complete the gas delivery.

4. The sedimentation tank for industrial wastewater treatment equipped with a desludging mechanism according to claim 3, characterized in that: The connecting pipes (52) are fixed with "C" type structure of the sleeve (54), and the adjacent connecting pipes (52) are connected through the sleeve (54) fixed therewith.

5. The sedimentation tank for industrial wastewater treatment equipped with a desilting mechanism according to claim 1, characterized in that: The drive part (4) comprises: Drive motor (41), mounted on the top of the pool body (1) through the frame body; Drive frame (42), coaxially rotatingly arranged in the pool body (1), the drive frame (42) is used for driving the mud scraping part (31) on the inner side of the pool body (1) to rotate.

6. The sedimentation tank for industrial wastewater treatment equipped with a desludging mechanism according to claim 5, characterized in that: The bottom center of the pool body (1) is provided with a mud collecting groove (17), the drive frame (42) is coaxially fixed with a circulating stirring frame (18) located in the mud collecting groove (17), the bottom of the circulating stirring frame (18) is provided with a circulating scraper (19), and the bottom of the circulating scraper (19) is attached to the bottom of the mud collecting groove (17).

7. The sedimentation tank for industrial wastewater treatment equipped with a desilting mechanism according to claim 1, characterized in that: The top of the water inlet channel (11) is provided with a circumferential array of water inlets (13), and the water inlets (13) are provided with flow stabilizing barrels (14).

8. The sedimentation tank for industrial wastewater treatment equipped with a desilting mechanism according to claim 5, characterized in that: The top of the pool body (1) is provided with a transfer tank (15) for storing scum, and the pool body (1) is provided with a collecting plate (16) for collecting scum; the collecting plate (16) is fixed with the drive frame (42).

9. The sedimentation tank with a sludge removal mechanism according to claim 1, wherein: The compression groove (21) is arranged in a circumferential array, and the compression groove (21) is in the shape of "eight".

Images