A high-density sedimentation tank and sedimentation process

Abstract

The invention discloses a high-density sedimentation tank and a sedimentation process, and relates to the technical field of high-density sedimentation, comprising a high-density tank body, wherein a mixing tank, a flocculation tank and a sedimentation tank are sequentially arranged in the high-density tank body along the flow direction of sewage, an inclined plate sedimentation assembly is arranged in the sedimentation tank, the inclined plate sedimentation assembly comprises an intermediate inclined plate and an outer inclined plate, a plurality of intermediate inclined plates are arranged between two outer inclined plates, a plurality of first triangular baffles are fixed at equal intervals from top to bottom on the end surface of the outer inclined plate close to the intermediate inclined plate, a first baffle space is formed between two adjacent first triangular baffles, a plurality of second triangular baffles are fixed from top to bottom on both left and right end surfaces of the intermediate inclined plate, a second baffle space is formed between two adjacent second triangular baffles, the first triangular baffle corresponds to the second baffle space, the second triangular baffle corresponds to the first baffle space, and the second triangular baffle corresponds to the second baffle space of the adjacent intermediate inclined plates, so that the speed difference between flocs and water flow is gradually enlarged, and clean water and flocs can be effectively separated.

Description

Technical Field

[0001] The invention relates to the technical field of high-density sedimentation, in particular to a high-density sedimentation tank and a sedimentation process. Background Art

[0002] High-density inclined tube sedimentation tank is used for sewage treatment in sewage treatment plants to settle the sludge in sewage. It has superior performance in sludge sedimentation. The high-density sedimentation tank is divided into three areas: reaction zone, sedimentation zone, and effluent zone. In the reaction zone, the turbine agitator stirs at an internal circulation rate of 10 times that of the influent water to form large floccules that are easy to settle. In the sedimentation zone, high-density suspended solids that are easy to settle settle quickly, while tiny floccules are captured by the inclined tubes, and the clean water separated from the floccules is collected and discharged through the water collection tank on the top of the pool. The sewage first enters the rapid mixing tank and is quickly mixed with the added coagulant. The coagulant can be aluminum salt or iron salt. After mixing, the sewage flows into the flocculation reaction tank, and a high-molecular flocculant is added, usually polyacrylamide, and slowly stirred with the sludge returned from the sedimentation tank to complete the flocculation reaction. The circulating solids accelerate the flocculation process and promote the formation of dense and uniform virtual particles. Then the water flows from the flocculation tank into the sedimentation tank through the plug flow area, and the clean water flows into the water collection tank on the top of the tank through the inclined tube / inclined plate; most of the suspended solids are directly separated in the sedimentation tank, and the remaining flocculation particles are intercepted and precipitated in the inclined plate / inclined tube. In actual sewage treatment, it is found that the separation effect in the sedimentation tank is not ideal at present. The water flowing into the water collection tank through the sedimentation tank does not meet the theoretical standard, and its impurity content exceeds the set standard. Research has found that the main reason is that the interception surface of the inclined plate for the flocculation particles is an inclined plane, which causes the speed difference between the flocculation particles and the water flow on the inclined plate to be unable to expand rapidly, causing some smaller flocculation particles to follow the water flow through the inclined plate into the water collection tank. Secondly, the flow separation path of the water flow on the inclined plate is short, and the flocculation particles cannot be effectively separated from the water flow. Extending the length of the inclined plate will cause the high-density sedimentation tank to occupy an increased area, which is not conducive to the layout of the high-density sedimentation tank. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a high-density sedimentation tank and a sedimentation process to solve the deficiencies of the prior art.

[0004] The objective of the present invention is achieved through the following technical solutions: a high-density sedimentation tank, comprising a high-density tank body, wherein a mixing tank, a flocculation tank and a sedimentation tank are sequentially arranged in the high-density tank body along the flow direction of sewage, wherein an inclined plate sedimentation assembly is arranged in the sedimentation tank, wherein the inclined plate sedimentation assembly comprises an intermediate inclined plate and two peripheral inclined plates, wherein a plurality of intermediate inclined plates are arranged at equal intervals between the two peripheral inclined plates, wherein a plurality of first triangular baffles are fixed at equal intervals from top to bottom on the end surface of the peripheral inclined plate close to the intermediate inclined plate, wherein a first baffle space is formed between two adjacent first triangular baffles, wherein the uppermost inclined plate of the first triangular baffle is provided with a plurality of first triangular baffles arranged at equal intervals from top to bottom, wherein a first baffle space is formed between two adjacent first triangular baffles, and wherein the uppermost inclined plate of the first triangular baffle is provided with a plurality of first triangular baffles arranged at equal intervals from top to bottom. The high end of the edge is connected to the outer inclined plate, and the left and right end surfaces of the middle inclined plate are fixed with a plurality of second triangular baffles at equal intervals from top to bottom, and a second baffle space is formed between two adjacent second triangular baffles, the first triangular baffle corresponds to the second baffle space, the second triangular baffle corresponds to the first baffle space, and the second triangular baffle corresponds to the second baffle space of the adjacent middle inclined plate, and flow gaps are formed between the first triangular baffle and the second triangular baffle and between the second triangular baffles of the adjacent middle inclined plates, and the outer inclined plate moves along its own inclination direction without interfering with the adjacent outer inclined plate;

[0005] A guide area is arranged between the flocculation tank and the sedimentation tank. A guide shaft is rotatably arranged in the guide area. A plurality of guide blades are fixed on the guide shaft. The disturbance direction of the guide blades is parallel to the arrangement direction of the plurality of intermediate inclined plates.

[0006] Furthermore, a guide baffle is fixed in the flocculation tank, and a flow space is formed between the top of the guide baffle and the inner top wall of the high-density tank body, and the guide area is formed between the guide baffle and the sedimentation tank. A driving cavity is arranged in the guide baffle, and the guide shaft is rotatably connected to the guide baffle, one end of the guide shaft extends into the driving cavity and is connected to a first bevel gear, a main shaft is rotatably connected to the high-density tank body, one end of the main shaft extends into the driving cavity and is connected to a second bevel gear, and the second bevel gear meshes with the first bevel gear, and a reduction gear and a motor are installed on the top of the high-density tank body, and the motor is connected to the input shaft of the reduction gear box through a coupling, and the output shaft of the reduction gear box is connected to a third bevel gear, and a fourth bevel gear is mounted on the main shaft, and the fourth bevel gear meshes with the third bevel gear.

[0007] Furthermore, a guide inclined plate is arranged below each of the intermediate inclined plates, and the inclination direction of the guide inclined plate is arranged opposite to the inclination direction of the intermediate inclined plate.

[0008] Furthermore, a mud discharge baffle is fixed in the sedimentation tank, and the mud discharge baffle divides the sedimentation tank into two areas along the water flow direction, and the inclined plate sedimentation components are arranged in both areas, and a clean water flow space is formed between the top of the mud discharge baffle and the inner top wall of the high-density tank body, and a mud discharge main shaft is rotatably penetrated on the mud discharge baffle, and two groups of mud discharge components are evenly distributed on the side wall of the mud discharge main shaft along its own circumferential direction, and the mud discharge component is located below the inclined plate sedimentation component, and the mud discharge component comprises a translation plate, a scissor-type telescopic structure, a telescopic rod and a mud pushing plate, and the scissor-type telescopic structure extends radially along the mud discharge main shaft. The top of one end of the scissors-type telescopic structure is slidably connected to the mud discharge main shaft, and the bottom of one end is hinged to the mud discharge main shaft, the top of the other end of the scissors-type telescopic structure is slidably connected to the translation plate, and the bottom of the other end is hinged to the translation plate, the mud pushing plate is fixed to the bottom of the translation plate, the mud pushing plate contacts the inner bottom wall of the sedimentation tank, the two ends of the telescopic rod are respectively hinged to the translation plate and the mud discharge main shaft, the lengths of the scissors-type telescopic structures in the two groups of mud discharge assemblies are different, a recessed mud discharge area is formed in the middle of the inner bottom wall of the sedimentation tank, a mud discharge pipe is connected to the bottom of the sedimentation tank, and the mud discharge pipe is connected to the recessed mud discharge area.

[0009] Furthermore, a mud discharge driving mechanism is provided on the top of the high-density pool body, and the mud discharge driving mechanism includes a mud discharge motor, an output shaft of the mud discharge motor is connected with a small gear, the mud discharge main shaft passes through the high-density pool body and is equipped with a large gear, and the small gear meshes with the large gear.

[0010] Furthermore, a driving cavity is coaxially provided in the mud discharge main shaft, and the telescopic rod comprises rod one, rod two and a lead screw, one end of the rod one is hinged to the mud discharge main shaft, and the other end thereof is penetrated by a rectangular groove, one end of the rod two is slidably adapted in the rectangular groove, and the other end is hinged to the translation plate, the lead screw is provided in the rectangular groove, and the lead screw is rotatably connected to the mud discharge main shaft, the rod two is provided with a threaded hole along the extension direction of the scissor-type telescopic structure, the lead screw thread is adapted to the threaded hole, one end of the lead screw extends to the driving cavity and is connected to a fifth bevel gear, a driving main shaft is rotatably penetrated on the mud discharge main shaft, one end of the driving main shaft extends to the driving cavity and is connected to a sixth bevel gear, and the sixth bevel gear meshes with the fifth bevel gear.

[0011] Furthermore, a mud pushing drive mechanism is provided on the top of the sedimentation tank, and the mud pushing drive mechanism includes a lifting plate, a mud pushing motor and a hydraulic rod. The hydraulic rod is vertically installed on the sedimentation tank, and the telescopic shaft of the hydraulic rod is connected to the lifting plate. The mud pushing motor is installed on the lifting plate. The telescopic shaft of the mud pushing motor is connected to a driving gear, and the driving main shaft passes through the top of the mud discharge main shaft and is connected to a driven gear, and the driven gear meshes with the driving gear.

[0012] Furthermore, a fine filtration assembly is provided in the sedimentation tank, and the fine filtration assembly is located above the inclined plate sedimentation assembly. The fine filtration assembly includes a rectangular plate and a fine filter mesh plate. The outer wall of the rectangular plate is fixed to the inner wall of the sedimentation tank. The rectangular plate is provided with a plurality of filter windows from top to bottom, and the plurality of filter windows are evenly distributed along the length direction of the rectangular plate. An annular boss is fixed on the inner wall of the filter window, and the fine filter mesh plate is installed on the annular boss. A clear water tank is provided on the side of the sedimentation tank away from the flocculation tank, and a clear water window connected to the clear water tank is provided on the side wall of the sedimentation tank, and the clear water window is located above the fine filtration assembly.

[0013] Furthermore, the fine filtration assembly also includes a transverse plate and a pressure plate, the transverse plate is fixedly installed on the top of the sedimentation tank, the pressure plate is arranged directly below the transverse plate, and the transverse plate is vertically installed with multiple downward pressure hydraulic rods along its own length direction, the telescopic shaft of the downward pressure hydraulic rod is connected to the pressure plate, and the pressure plate squeezes the fine filter mesh plate.

[0014] A high-density sedimentation process uses the above-mentioned high-density sedimentation tank, installs a second triangular baffle on the middle inclined plate, and installs a first triangular baffle on the outer inclined plate. The first triangular baffle and the adjacent second triangular baffle are arranged alternately, and the second triangular baffles on the adjacent middle inclined plates are arranged alternately. The guide blades are driven to rotate by the guide shaft, so that the water flow generates a force to flow in the horizontal direction. The water flow will flow horizontally while moving upward to contact the inclined plate sedimentation component, so that the water flow will frequently collide with the first triangular baffle and the second triangular baffle, gradually expanding the speed difference between the flocs and the water flow, so that the flocs can be quickly and effectively separated from the water flow. At the same time, a reciprocating flow gap is formed between the second triangular baffles of the adjacent middle inclined plates, which extends the length of the water flow path, can effectively separate the clean water and the flocs, and further expand the speed difference between the flocs and the water flow.

[0015] The beneficial effects of the present invention are:

[0016] The sewage that has been mixed and flocculated enters the sedimentation tank, and the guide blades are driven to rotate by the guide shaft, so that the water flow generates a force for horizontal flow. The water flow will flow horizontally while moving upward to contact the inclined plate sedimentation component, so that the water flow will frequently collide with the first triangular baffle bar and the second triangular baffle bar, gradually increasing the speed difference between the flocs and the water flow, so that the flocs can be quickly and effectively separated from the water flow. At the same time, the provision of the first triangular baffle bar and the second triangular baffle bar extends the length of the path of the water flow, which can greatly improve the flow path of the sewage without changing the size of the sedimentation tank and the inclined plate sedimentation component, gradually increase the speed difference between the flocs and the water flow, and effectively separate the clean water and the flocs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of a high-density sedimentation tank of the present invention;

[0018] Figure 2 It is a structural schematic diagram of an inclined plate sedimentation assembly in a high-density sedimentation tank of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of a middle inclined plate in a high-density sedimentation tank of the present invention;

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of a mud discharge assembly in a high-density sedimentation tank of the present invention;

[0022] Figure 6 This is a schematic diagram of the internal structure of a telescopic rod in a high-density sedimentation tank of the present invention;

[0023] Figure 7 for Figure 1 Enlarged view of point B in the middle;

[0024] In the figure, 1-high-density tank body, 2-mixing tank, 3-flocculation tank, 4-sedimentation tank, 5-middle inclined plate, 6-outer inclined plate, 7-first triangular baffle, 8-second triangular baffle, 9-guide area, 10-guide shaft, 11-guide blade, 12-guide baffle, 13-drive chamber, 14-first bevel gear, 15-main shaft, 16-second bevel gear, 17-reduction box, 18-motor, 19-third bevel gear, 20-fourth bevel gear, 21-guide inclined plate, 22-mud discharge baffle, 23-mud discharge main shaft, 24-translation plate, 25-scissor-type telescopic structure, 26-mud push plate, 28-discharge Mud motor, 29-small gear, 30-large gear, 31-depressed mud discharge area, 32-mud discharge pipe, 33-driving chamber, 34-rod one, 35-rod two, 36-screw, 37-rectangular groove, 38-threaded hole, 39-fifth bevel gear, 40-driving spindle, 41-sixth bevel gear, 42-lifting plate, 43-mud pushing motor, 44-hydraulic rod, 45-driving gear, 46-driven gear, 47-rectangular plate, 48-fine filter plate, 49-filter window, 50-annular boss, 51-clean water tank, 52-clean water window, 53-cross plate, 54-pressure plate, 55-down hydraulic rod. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0026] Embodiment 1

[0027] like Figures 1 to 7As shown, a high-density sedimentation tank comprises a high-density tank body 1, in which a mixing tank 2, a flocculation tank 3 and a sedimentation tank 4 are sequentially arranged along the flow direction of sewage in the high-density tank body 1, and a stirring mechanism is arranged in both the mixing tank 2 and the flocculation tank 3, and the sewage and the reagent are fully mixed by stirring, which belongs to the prior art and will not be described in detail. An inclined plate sedimentation assembly is arranged in the sedimentation tank 4, and the inclined plate sedimentation assembly comprises an intermediate inclined plate 5 and two outer inclined plates 6, and a plurality of intermediate inclined plates 5 are arranged at equal intervals between the two outer inclined plates 6, and a plurality of first triangular baffles 7 are fixed at equal intervals from top to bottom on the end surface of the outer inclined plate 6 close to the intermediate inclined plate 5, and a first deflection space is formed between two adjacent first triangular baffles 7, and the high end of the uppermost oblique side of the first triangular baffle 7 is connected to the outer inclined plate 6, and the left and right sides of the intermediate inclined plate 5 are connected to the outer inclined plate 6. A plurality of second triangular baffles 8 are fixed at equal intervals from top to bottom on both end surfaces, and a second baffle space is formed between two adjacent second triangular baffles 8. The first triangular baffle 7 corresponds to the second baffle space, the second triangular baffle 8 corresponds to the first baffle space, and a second triangular baffle 8 corresponds to the second baffle space of the adjacent middle inclined plate 5. A flow gap is formed between the first triangular baffle 7 and the second triangular baffle 8 and between the second triangular baffles 8 of the adjacent middle inclined plate 5. The outer inclined plate 6 moves along its own inclination direction without interfering with the adjacent outer inclined plate 6, so that the outer inclined plate 6 and the middle inclined plate 5 are conveniently disassembled and assembled, so that there is no overlapping area between the middle inclined plates 5 and between the outer inclined plates 6 and the middle inclined plates 5 along the inclination direction, so that they can be slid out along the inclination direction for easy disassembly and assembly; flocculation A guide area 9 is arranged between the pool 3 and the sedimentation tank 4, and a guide shaft 10 is rotatably arranged in the guide area 9. A plurality of guide blades 11 are fixed on the guide shaft 10, and the disturbance direction of the guide blades 11 is parallel to the arrangement direction of the plurality of intermediate inclined plates 5. The sewage first enters the mixing tank 2, and a coagulant is added to the mixing tank 2 for rapid mixing. Then the sewage flows into the flocculation tank 3, and a flocculant is added to the flocculation tank 3 to complete the flocculation reaction. The sewage carries the flocs through the guide area 9 into the sedimentation tank 4, and the guide shaft 10 drives the guide blades 11 to rotate slowly, pushing the sewage forward. The sewage accumulates in the sedimentation tank 4 and flows upward, so that the sewage passes through the flow gap to the top of the inclined plate sedimentation assembly. Under the action of the guide blades 11, the sewage has horizontal power, so that the sewage During the upward flow, the first triangular baffle 7, the second triangular baffle 8, the middle inclined plate 5 and the outer inclined plate 6 will be frequently collided. After the collision, the flow speed of the flocs is greatly reduced relative to the fluid, so that a speed difference is quickly generated between the flocs and the clean water, so that the flocs are separated from the clean water. During the separation process, the flocs will condense with each other to form large solids, which will fall to the bottom of the sedimentation tank 4. At the same time, under the action of the first triangular baffle 7 and the second triangular baffle 8, the flow gap forms a reciprocating flow space, which greatly extends the flow path length of the sewage, and gradually increases the speed difference between the clean water and the flocs to separate them. There is no need to increase the layout volume of the sedimentation tank 4, so that the flocs and the clean water can be effectively separated, which improves the sedimentation separation effect and makes the clean water of higher quality.Secondly, the guide blade 11 is arranged close to the inclined plate sedimentation assembly, and the rotation speed of the guide blade 11 is relatively slow. Due to the flow of water and the guidance of the guide blade 11, the sewage naturally generates horizontal power, and the power intensity is relatively small, so that the condensed flocs can overcome the effect of the guide blade 11 and settle to the bottom of the sedimentation tank 4, so that the setting of the guide blade 11 does not affect the sedimentation of the flocs; it is worth noting that the high end of the uppermost bevel of the first triangular baffle 7 is connected to the outer inclined plate 6, and the high end of the uppermost bevel of the second triangular baffle 8 is connected to the middle inclined plate 5, so that the inclined surface of the first triangular baffle 7 and the inclined surface of the second triangular baffle 8 are both inclined downward, so that the flocs will not accumulate on the first triangular baffle 7 and the second triangular baffle 8, so that the flocs can smoothly gather and fall to the bottom of the sedimentation tank 4. ;

[0028] Embodiment 2

[0029] Based on the first embodiment, Figure 1 As shown, a guide baffle 12 is fixed in the flocculation tank 3, and a flow space is formed between the top of the guide baffle 12 and the inner top wall of the high-density tank body 1, and a guide area 9 is formed between the guide baffle 12 and the sedimentation tank 4. A driving chamber 13 is arranged in the guide baffle 12, and a guide shaft 10 is rotatably connected to the guide baffle 12. One end of the guide shaft 10 extends to the driving chamber 13 and is connected to a first bevel gear 14. A main shaft 15 is rotatably connected to the high-density tank body 1, and one end of the main shaft 15 extends to the driving chamber 13 and is connected to a second bevel gear 16. The second bevel gear 16 meshes with the first bevel gear 14. A reduction box 17 and a motor 18 are installed on the top of the high-density tank body 1, and the motor 18 is connected to the output of the reduction box 17 through a coupling transmission. The output shaft of the reduction gearbox 17 is connected with the third bevel gear 19, the main shaft 15 is provided with a fourth bevel gear 20, the fourth bevel gear 20 meshes with the third bevel gear 19, the motor 18 drives the reduction gearbox 17 to start, the reduction gearbox 17 drives the main shaft 15 to rotate through the meshing of the fourth bevel gear 20 and the third bevel gear 19, the main shaft 15 drives the guide shaft 10 to rotate through the meshing of the first bevel gear 14 and the second bevel gear 16, the guide shaft 10 drives the guide blade 11 to rotate, so that the guide blade 11 rotates to drive the sewage to flow; the speed of the motor 18 is reduced by the reduction gearbox 17, so that the guide blade 11 rotates slowly, which does not affect the floc sedimentation, and allows the sewage to frequently collide with the middle inclined plate 5 and the outer inclined plate 6.

[0030] Embodiment 3

[0031] Based on the second embodiment, Figure 1As shown, a guide inclined plate 21 is arranged under each intermediate inclined plate 5, and the inclination direction of the guide inclined plate 21 is arranged opposite to the inclination direction of the intermediate inclined plate 5. The water flow is guided by the guide inclined plate 21, so that the water flow moves upward close to the inclined plate sedimentation assembly, and the water flow enters the flow gap. Since the inclination direction of the guide inclined plate 21 is arranged opposite to the inclination direction of the intermediate inclined plate 5, the water flow guided by the guide inclined plate 21 hits the intermediate inclined plate 5 and flows into the flow gap. The speed difference between the clean water and the flocs is quickly increased through multiple reverse collisions, thereby achieving the effect of rapid sedimentation and separation.

[0032] Embodiment 4

[0033] Based on the third embodiment, Figure 1 and Figure 7 As shown, a fine filter assembly is provided in the sedimentation tank 4, and the fine filter assembly is located above the inclined plate sedimentation assembly. The fine filter assembly includes a rectangular plate 47 and a fine filter screen plate 48. The outer wall of the rectangular plate 47 is fixed to the inner wall of the sedimentation tank 4. A plurality of filter windows 49 are provided from top to bottom on the rectangular plate 47. The plurality of filter windows 49 are evenly distributed along the length direction of the rectangular plate 47. An annular boss 50 is fixed to the inner wall of the filter window 49. The fine filter screen plate 48 is installed on the annular boss 50. A clean water tank 51 is provided on the side of the sedimentation tank 4 away from the flocculation tank 3. A clean water window 52 connected to the clean water tank 51 is provided on the side wall of the sedimentation tank 4. The clean water window 52 is located above the fine filter assembly. The clean water passing through the inclined plate sedimentation assembly will pass through the fine filter screen plate 48, and the clean water will be further filtered by the fine filter screen plate 48. The clean water passing through the fine filter screen plate 48 enters the clean water tank 51 through the clean water window 52, ​​thereby further improving The quality of clean water; the fine filter screen plate 48 adopts a detachable connection method, which is convenient for replacing or maintaining the clogged fine filter screen plate 48. The specific installation method of the fine filter screen plate 48 is as follows: the fine filter assembly also includes a transverse plate 53 and a pressure plate 54. The transverse plate 53 is fixedly installed on the top of the sedimentation tank 4, and the pressure plate 54 is arranged directly below the transverse plate 53. The transverse plate 53 is vertically installed with multiple downward pressing hydraulic rods 55 along its own length direction. The telescopic shaft of the downward pressing hydraulic rod 55 is connected to the pressure plate 54. The pressure plate 54 squeezes the fine filter screen plate 48, and the downward pressing hydraulic rod 55 drives the pressure plate 54 to contact the fine filter screen plate 48, thereby limiting the fine filter screen plate 48 between the pressure plate 54 and the annular boss 50, and completing the installation of multiple fine filter screen plates 48 at the same time. When removing the fine filter screen plate 48, it is only necessary to make the downward pressing hydraulic rod 55 drive the pressure plate 54 to move upward and disengage from the fine filter screen plate 48. Compared with the traditional screw installation method, its operation is simple and fast.

[0034] Embodiment 5

[0035] Due to the setting of the guide blades 11, the movement intensity of the sewage in the sedimentation tank 4 is greater than that of the sewage in the traditional sedimentation tank 4. In order to prevent the guide blades 11 from disturbing the sludge precipitated at the bottom of the sedimentation tank 4, it is necessary to discharge the sludge at the bottom of the sedimentation tank 4 in time to prevent the sludge from piling up too high, causing the sludge to approach the guide blades 11, causing the sludge to be affected by the guide blades 11 and mixed into the sewage again, increasing the burden of the inclined plate sedimentation assembly. For this reason, based on the fourth embodiment, as shown in FIG. Figures 1 to 6As shown, a mud discharge baffle 22 is fixed in the sedimentation tank 4, and the mud discharge baffle 22 divides the sedimentation tank 4 into two areas along the water flow direction. Inclined plate sedimentation components are arranged in the two areas, and a clean water flow space is formed between the top of the mud discharge baffle 22 and the inner top wall of the high-density tank body 1. A mud discharge main shaft 23 is rotatably penetrated on the mud discharge baffle 22, and two groups of mud discharge components are evenly distributed on the side wall of the mud discharge main shaft 23 along its own circumferential direction. The mud discharge component is located below the inclined plate sedimentation component. The mud discharge component includes a translation plate 24, a scissor-type telescopic structure 25, a telescopic rod and a mud pushing plate 26. The scissor-type telescopic structure 25 extends radially along the mud discharge main shaft 23, and the top of one end of the scissor-type telescopic structure 25 is slidably connected to the mud discharge main shaft 23, and the bottom of one end is hinged to the mud discharge main shaft 23. The top of the other end of the telescopic structure 25 is slidably connected to the translation plate 24, and the bottom of the other end is hinged to the translation plate 24. The mud pushing plate 26 is fixed to the bottom of the translation plate 24, and the mud pushing plate 26 contacts the inner bottom wall of the sedimentation tank 4. The two ends of the telescopic rod are respectively hinged to the translation plate 24 and the mud discharge main shaft 23. The lengths of the scissor-type telescopic structures 25 in the two groups of mud discharge components are different. A recessed mud discharge area 31 is formed in the middle of the inner bottom wall of the sedimentation tank 4. A mud discharge pipe 32 is connected to the bottom of the sedimentation tank 4, and the mud discharge pipe 32 is connected to the recessed mud discharge area 31. A mud discharge drive mechanism is provided at the top of the high-density tank body 1. The mud discharge drive mechanism includes a mud discharge motor 28. The output shaft of the mud discharge motor 28 is connected to a small gear 29. The mud discharge main shaft 23 passes through the high-density tank body 1 and is equipped with a large gear 30. The small gear 29 The meshing large gear 30 drives the scissor-type telescopic structure 25 to extend and contract through the extension and contraction of the telescopic rod. The scissor-type telescopic structure 25 drives the translation plate 24 to move radially along the mud discharge main shaft 23. The translation plate 24 drives the mud pushing plate 26 to move radially along the mud discharge main shaft 23, and the mud is pushed into the recessed mud discharge area 31 by the mud pushing plate 26. Finally, the mud is discharged to the designated position through the mud discharge pipe 32. Since the extension and contraction range of the scissor-type telescopic structure 25 is limited, in order to ensure that the mud pushing plate 26 can smoothly push the sludge into the recessed mud discharge area 31, two groups of mud discharge components are provided, and the extension lengths of the scissor-type telescopic structures 25 in the two groups of mud discharge components are different. One of the scissor-type telescopic structures 25 has a longer length after being unfolded, which can push the sludge on the inner wall of the sedimentation tank 4 to the sedimentation tank 4. The middle position, and the expanded position of the other scissor-type telescopic structure 25 coincides with the retracted position of the first scissor-type telescopic structure 25, and the retracted position of the other scissor-type telescopic structure 25 is located in the recessed mud discharge area 31, so that the other scissor-type telescopic structure 25 can push the sludge pushed by the first scissor-type telescopic structure 25 into the recessed mud discharge area 31, and the mud discharge motor 28 drives the mud discharge main shaft 23 to rotate through the engagement of the small gear 29 and the large gear 30, and drives the two groups of mud discharge components to move at the same time through the mud discharge main shaft 23, and the mud discharge main shaft 23 stops after rotating a certain angle, leaving the action time of the mud pushing plate 26, and then the mud discharge main shaft 23 stops after rotating a certain angle again, and the mud pushing component moves to push mud, and this is repeated, so that the mud discharge components cover the mud discharge operation in sequence along the circumferential direction.One of the mud discharge components pushes the sludge to the middle of the sedimentation tank 4, and the other mud discharge component pushes the sludge from the middle into the concave mud discharge area 31. Through the joint action of the two groups of mud push components with different extension ranges, the sludge can be quickly pushed into the concave mud discharge area 31, achieving the effect of rapid mud discharge and preventing the sludge from accumulating too high in the sedimentation tank 4. Secondly, the setting of the concave mud discharge area 31 leaves space for the arrangement of the scissor-type telescopic structure 25, so that the scissor-type telescopic structure 25 can push the sludge into the concave mud discharge area 31 after contraction.

[0036] Embodiment 6

[0037] Based on Example 5, Figures 1 to 6As shown, a driving cavity 33 is coaxially provided in the mud discharge main shaft 23, and the telescopic rod includes a rod 1 34, a rod 2 35 and a lead screw 36. One end of the rod 1 34 is hinged to the mud discharge main shaft 23, and the other end is penetrated with a rectangular groove 37. One end of the rod 2 35 is slidably adapted in the rectangular groove 37, and the other end is hinged to the translation plate 24. A lead screw 36 is provided in the rectangular groove 37, and the lead screw 36 is rotatably connected to the mud discharge main shaft 23. A threaded hole 38 is provided in the rod 2 35 along the extension direction of the scissor-type telescopic structure 25. The lead screw 36 is threadedly adapted to the threaded hole 38. One end of the lead screw 36 extends to the driving cavity 33 and is connected to the fifth bevel gear 39. A driving main shaft 40 is rotatably penetrated on the mud discharge main shaft 23, and one end of the driving main shaft 40 extends to the driving cavity 3 3 is connected with a sixth bevel gear 41, which meshes with the fifth bevel gear 39. A mud-pushing driving mechanism is arranged on the top of the sedimentation tank 4. The mud-pushing driving mechanism includes a lifting plate 42, a mud-pushing motor 43 and a hydraulic rod 44. The hydraulic rod 44 is vertically installed on the sedimentation tank 4. The telescopic shaft of the hydraulic rod 44 is connected to the lifting plate 42. The mud-pushing motor 43 is installed on the lifting plate 42. The telescopic shaft of the mud-pushing motor 43 is connected with a driving gear 45. The driving main shaft 40 passes through the top of the mud-discharging main shaft 23 and is connected with a driven gear 46. The driven gear 46 meshes with the driving gear 45. In order to avoid interference between the mud-discharging driving mechanism and the mud-pushing driving mechanism, the mud-pushing motor 43 in the mud-pushing driving mechanism has a lifting freedom. When the mud-pushing operation is performed , the hydraulic rod 44 drives the lifting plate 42 to move, so that the driving gear 45 is meshed with the driven gear 46, so that the mud pushing motor 43 drives the driving spindle 40 to rotate. At this time, the mud discharge spindle 23 does not rotate, and the mud discharge spindle 23 drives the sixth bevel gear 41 to rotate. The sixth bevel gear 41 simultaneously drives the two fifth bevel gears 39 to rotate, and the fifth bevel gear 39 drives the lead screw 36 to rotate. Since the second rod 35 slides and fits in the rectangular groove 37, the rotational freedom of the second rod 35 is limited, so that the second rod 35 moves linearly along the axial direction of the lead screw 36, and the second rod 35 drives the translation plate 24 to move, so that the scissor-type telescopic structure 25 is extended and contracted, so that the two sets of mud pushing components can be driven synchronously to perform mud pushing operations. When the mud pushing operation is completed The mud pushing position is changed to push the mud again. Specifically, the hydraulic rod 44 drives the lifting plate 42 to move, so that the driving gear 45 is separated from the driven gear 46, and the mud discharge motor 28 is started. The mud discharge motor 28 drives the mud discharge main shaft 23 to rotate through the meshing of the small gear 29 and the large gear 30, and the mud discharge main shaft 23 drives the driving main shaft 40 to rotate together. Since the driving gear 45 and the driven gear 46 have been separated, there will be no interference, so that the mud discharge main shaft 23 can smoothly drive the mud pushing assembly to rotate, adjust the mud pushing position, and so on. The cycle is repeated, and the sludge in the sedimentation tank 4 is pushed into the concave mud discharge area 31 in sequence along the circumferential direction of the mud discharge main shaft 23, and finally discharged through the mud discharge pipe 32, thereby realizing a fast mud discharge operation and preventing the sludge from being mixed into the sewage again;It is worth noting that the driving spindle 40 is rotatably connected to the mud discharge spindle 23 through a bearing, and the fixed sleeve on the driving spindle 40 is provided with an elastic friction sleeve, which is interference-fitted with the mud discharge spindle 23, so that there is a large friction force between the mud discharge spindle 23 and the driving spindle 40. When the driving gear 45 and the driven gear 46 are separated, under the action of the friction force, the mud discharge spindle 23 and the driving spindle 40 will not have a relative rotational freedom, so that the driving spindle 40 rotates with the mud discharge spindle 23, so that the deflection accuracy of the mud discharge spindle 23 and the driving spindle 40 is high, so that the large gear 30 can smoothly mesh with the small gear 29 during the next mud discharge operation. ;

[0038] A high-density sedimentation process uses the above-mentioned high-density sedimentation tank, installs a second triangular baffle 8 on the middle inclined plate 5, and installs a first triangular baffle 7 on the outer inclined plate 6. The first triangular baffle 7 is staggered with the adjacent second triangular baffle 8, and the second triangular baffle 8 on the adjacent middle inclined plates 5 is staggered. The guide blade 11 is driven to rotate by the guide shaft 10, so that the water flow generates a force to flow in the horizontal direction. The water flow will flow horizontally while moving upward to contact the inclined plate sedimentation component, so that the water flow will frequently collide with the first triangular baffle 7 and the second triangular baffle 8, gradually expanding the speed difference between the flocs and the water flow, so that the flocs can be quickly and effectively separated from the water flow. At the same time, a reciprocating flow gap is formed between the second triangular baffles 8 of the adjacent middle inclined plates 5, which extends the length of the water flow path, can effectively separate the clean water and the flocs, and further expand the speed difference between the flocs and the water flow.

Claims

1. A high-density sedimentation tank, comprising a high-density tank body (1), characterized in that: The high-density tank body (1) is provided with a mixing tank (2), a flocculation tank (3) and a sedimentation tank (4) in sequence along the flow direction of sewage. The sedimentation tank (4) is provided with an inclined plate sedimentation assembly, and the inclined plate sedimentation assembly comprises an intermediate inclined plate (5) and two peripheral inclined plates (6). A plurality of intermediate inclined plates (5) are arranged at equal intervals between the two peripheral inclined plates (6). A plurality of first triangular baffles (7) are fixed at equal intervals from top to bottom on the end surface of the peripheral inclined plate (6) close to the intermediate inclined plate (5). A first baffle space is formed between two adjacent first triangular baffles (7). The high end of the uppermost oblique side of the first triangular baffle (7) is connected to the peripheral inclined plate (6). A plurality of second triangular baffles (8) are fixed at equal intervals from top to bottom on both left and right end surfaces of the middle inclined plate (5); a second baffle space is formed between two adjacent second triangular baffles (8); the first triangular baffle (7) corresponds to the second baffle space; the second triangular baffle (8) corresponds to the first baffle space; the second triangular baffle (8) corresponds to the second baffle space of the adjacent middle inclined plate (5); a flow gap is formed between the first triangular baffle (7) and the second triangular baffle (8) and between the second triangular baffles (8) of the adjacent middle inclined plates (5); and the outer inclined plate (6) moves along its own inclination direction without interfering with the adjacent outer inclined plate (6); A guide area (9) is provided between the flocculation tank (3) and the sedimentation tank (4), a guide shaft (10) is rotatably provided in the guide area (9), a plurality of guide blades (11) are fixed on the guide shaft (10), and a disturbance direction of the guide blades (11) is parallel to an arrangement direction of the plurality of intermediate inclined plates (5); A guide baffle (12) is fixed in the flocculation tank (3), a flow space is formed between the top of the guide baffle (12) and the inner top wall of the high-density tank body (1), the guide area (9) is formed between the guide baffle (12) and the sedimentation tank (4), a drive chamber (13) is provided in the guide baffle (12), the guide shaft (10) is rotatably connected to the guide baffle (12), one end of the guide shaft (10) extends into the drive chamber (13) and is connected to a first bevel gear (14), and a main shaft (15) is rotatably connected to the high-density tank body (1). One end of the main shaft (15) extends into the driving chamber (13) and is connected to a second bevel gear (16), the second bevel gear (16) meshing with the first bevel gear (14); a reduction box (17) and a motor (18) are installed on the top of the high-density pool body (1); the motor (18) is connected to the input shaft of the reduction box (17) through a coupling, the output shaft of the reduction box (17) is connected to a third bevel gear (19), and a fourth bevel gear (20) is sleeved on the main shaft (15), the fourth bevel gear (20) meshing with the third bevel gear (19); A guide inclined plate (21) is provided below each of the intermediate inclined plates (5), and the inclination direction of the guide inclined plate (21) is arranged opposite to the inclination direction of the intermediate inclined plate (5); A mud discharge baffle (22) is fixed in the sedimentation tank (4), and the mud discharge baffle (22) divides the sedimentation tank (4) into two areas along the water flow direction. The inclined plate sedimentation assembly is arranged in both areas. A clean water flow space is formed between the top of the mud discharge baffle (22) and the inner top wall of the high-density tank body (1). A mud discharge main shaft (23) is rotatably penetrated on the mud discharge baffle (22). Two groups of mud discharge assemblies are evenly distributed on the side wall of the mud discharge main shaft (23) along its own circumferential direction. The mud discharge assembly is located below the inclined plate sedimentation assembly. The mud discharge assembly comprises a translation plate (24), a scissor-type telescopic structure (25), a telescopic rod and a mud pusher plate (26). The scissor-type telescopic structure (25) extends radially along the mud discharge main shaft (23). One end of the scissor-type telescopic structure (25) The top of the scissor-type telescopic structure (25) is slidably connected to the mud discharge main shaft (23), and the bottom of one end is hinged to the mud discharge main shaft (23); the top of the other end of the scissor-type telescopic structure (25) is slidably connected to the translation plate (24), and the bottom of the other end is hinged to the translation plate (24); the mud pushing plate (26) is fixed to the bottom of the translation plate (24), and the mud pushing plate (26) contacts the inner bottom wall of the sedimentation tank (4); the two ends of the telescopic rod are respectively hinged to the translation plate (24) and the mud discharge main shaft (23); the lengths of the scissor-type telescopic structures (25) in the two groups of mud discharge assemblies are different; a recessed mud discharge area (31) is formed in the middle of the inner bottom wall of the sedimentation tank (4); the bottom of the sedimentation tank (4) is connected to a mud discharge pipe (32), and the mud discharge pipe (32) is connected to the recessed mud discharge area (31); A mud discharge drive mechanism is provided on the top of the high-density pool body (1), the mud discharge drive mechanism comprising a mud discharge motor (28), the output shaft of the mud discharge motor (28) being connected to a pinion gear (29), the mud discharge main shaft (23) passing through the high-density pool body (1) being sleeved with a large gear (30), the small gear (29) meshing with the large gear (30); A driving cavity (33) is coaxially arranged in the mud discharge main shaft (23); the telescopic rod comprises a rod 1 (34), a rod 2 (35) and a lead screw (36); one end of the rod 1 (34) is hinged to the mud discharge main shaft (23), and the other end thereof is penetrated by a rectangular groove (37); one end of the rod 2 (35) is slidably fitted in the rectangular groove (37), and the other end thereof is hinged to the translation plate (24); the lead screw (36) is arranged in the rectangular groove (37); the lead screw (36) is rotatably connected to the mud discharge main shaft (23); the rod 2 (35) A threaded hole (38) is provided along the extension direction of the scissor-type telescopic structure (25), the thread of the lead screw (36) is adapted to the threaded hole (38), one end of the lead screw (36) extends into the drive cavity (33) and is connected to a fifth bevel gear (39), a drive main shaft (40) is rotatably penetrated on the mud discharge main shaft (23), one end of the drive main shaft (40) extends into the drive cavity (33) and is connected to a sixth bevel gear (41), and the sixth bevel gear (41) meshes with the fifth bevel gear (39); A mud-pushing driving mechanism is arranged on the top of the sedimentation tank (4), and the mud-pushing driving mechanism comprises a lifting plate (42), a mud-pushing motor (43) and a hydraulic rod (44). The hydraulic rod (44) is vertically mounted on the sedimentation tank (4), and a telescopic shaft of the hydraulic rod (44) is connected to the lifting plate (42). The mud-pushing motor (43) is mounted on the lifting plate (42). The telescopic shaft of the mud-pushing motor (43) is connected to a driving gear (45). The driving main shaft (40) passes through the top of the mud-discharging main shaft (23) and is connected to a driven gear (46). The driven gear (46) meshes with the driving gear (45).

2. A high-density sedimentation tank according to claim 1, characterized in that: A fine filter assembly is provided in the sedimentation tank (4), and the fine filter assembly is located above the inclined plate sedimentation assembly. The fine filter assembly comprises a rectangular plate (47) and a fine filter screen plate (48). The outer wall of the rectangular plate (47) is fixed to the inner wall of the sedimentation tank (4). The rectangular plate (47) is provided with a plurality of filter windows (49) from top to bottom. The plurality of filter windows (49) are evenly distributed along the length direction of the rectangular plate (47). An annular boss (50) is fixed to the inner wall of the filter window (49), and the fine filter screen plate (48) is mounted on the annular boss (50). A clean water tank (51) is provided on a side of the sedimentation tank (4) away from the flocculation tank (3). A clean water window (52) communicating with the clean water tank (51) is provided on the side wall of the sedimentation tank (4), and the clean water window (52) is located above the fine filter assembly.

3. A high-density sedimentation tank according to claim 2, characterized in that: The fine filter assembly further comprises a transverse plate (53) and a pressure plate (54); the transverse plate (53) is fixedly mounted on the top of the sedimentation tank (4); the pressure plate (54) is arranged directly below the transverse plate (53); the transverse plate (53) is vertically mounted with a plurality of downward pressing hydraulic rods (55) along its length direction; the telescopic shafts of the downward pressing hydraulic rods (55) are connected to the pressure plate (54); and the pressure plate (54) presses the fine filter screen plate (48).

4. A high-density sedimentation process, using the high-density sedimentation tank as claimed in claim 1, characterized in that: A second triangular baffle (8) is installed on the middle inclined plate (5), and a first triangular baffle (7) is installed on the outer inclined plate (6). The first triangular baffle (7) and the adjacent second triangular baffle (8) are arranged in a staggered manner, and the second triangular baffles (8) on the adjacent middle inclined plates (5) are arranged in a staggered manner. The guide blades (11) are driven to rotate by the guide shaft (10), so that the water flow generates a force for flowing in the horizontal direction. The water flow will flow horizontally while moving upward to contact the inclined plate sedimentation assembly, so that the water flow will frequently collide with the first triangular baffle (7) and the second triangular baffle (8), gradually increasing the speed difference between the flocs and the water flow, so that the flocs can be quickly and effectively separated from the water flow. At the same time, a reciprocating flow gap is formed between the second triangular baffles (8) of the adjacent middle inclined plates (5), thereby extending the length of the water flow path, effectively separating the clean water and the flocs, and further increasing the speed difference between the flocs and the water flow.

Images