Multi-stage inclined plate adjustable angle high-density sedimentation tank and working method

Abstract

This invention belongs to the field of wastewater treatment technology, specifically a multi-stage adjustable-angle high-density sedimentation tank and its working method. It includes a sedimentation tank body, which comprises a water-holding tank with an inlet fixedly inserted through its side wall. By adjusting the movement of the bottom of the adjusting plate, the inclination angle of the inclined plate formed by the adjusting plate and the first rotating plate is reduced. A displacement ring adjusts the angle of the inclined plate in real time according to the water density, allowing the inclined plate to adapt to changes in water density, thereby improving sedimentation efficiency, reducing the amount of coagulant added, or extending the retention time, thus reducing wastewater treatment costs. Furthermore, by the float slowly descending synchronously with the water level, the water is kept in a relatively static or low-velocity state, while the local velocity changes caused by the movement of the second rotating plate are small, reducing disturbance during scraping and thus helping to ensure stable effluent quality.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a multi-stage adjustable-angle high-density sedimentation tank with inclined plates and its working method. Background Technology

[0002] Multi-stage inclined plate adjustable angle high-density sedimentation tank is a high-efficiency water treatment facility. Based on inclined tube sedimentation and sludge recycling technology, it organically combines functions such as mixing, flocculation, sedimentation, and sludge thickening. The multi-stage inclined plate design increases the sedimentation area and improves sedimentation efficiency. At the same time, the inclined plate angle is adjustable to adapt to different working conditions, thereby efficiently removing suspended solids and impurities from the water in a compact structure.

[0003] In existing technologies, when a multi-stage adjustable-angle high-density sedimentation tank is in operation, the sedimentation zone of the multi-stage adjustable-angle inclined plates, which have completed the pre-treatment work, is pre-adjusted according to water quality and treatment requirements to optimize the sedimentation effect. Flocs settle and separate on the surface of the inclined plates, slide down the inclined plates to the sludge hopper at the bottom of the tank, and the clarified water rises through the gaps between the inclined plates to the effluent area for discharge. Some of the sludge at the bottom of the tank is returned to the flocculation zone to enhance the flocculation effect, while some is periodically discharged, thereby achieving efficient solid-liquid separation.

[0004] The above-mentioned solution still has some problems in practical application. Although the existing equipment can complete the sedimentation work in the sedimentation tank, the relationship between the inclined plate angle and the sedimentation efficiency needs to be based on a fluid dynamics model (such as Stokes' law). However, the actual water quality varies greatly, and the model is difficult to accurately fit all working conditions (such as floc adhesion, nonlinear factors such as water flow disturbance), which leads to the failure of the control algorithm. This will prevent the inclined plate from adjusting the tilt angle of the inclined plate in real time according to the density in the water. This will cause the inclined plate to be unable to match the settling velocity of the particles. In order to maintain the treatment effect, it is necessary to increase the amount of coagulant added or extend the retention time, which will increase the cost of the reagents, limit the treatment load, and thus increase the cost of sewage treatment.

[0005] Therefore, the present invention provides a high-density sedimentation tank with adjustable angle of multi-stage inclined plates and a working method thereof. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the multi-stage inclined plate adjustable angle high-density sedimentation tank of the present invention includes a sedimentation tank body, the sedimentation tank body includes a water holding tank, the side wall of the water holding tank is fixedly penetrated by a water inlet, and an adaptive adjustment mechanism is provided inside the sedimentation tank body.

[0008] The adaptive adjustment mechanism includes a displacement ring that floats according to the density of the water. An adjustment plate is rotatably mounted above the displacement ring. A first rotating plate is slidably connected inside the adjustment plate. A second fixed rod is mounted on the top of the first rotating plate. The magnitude of the buoyancy at the same height can be determined by the density of the water, and the tilt angle between the adjustment plate and the first rotating plate can be determined according to the floating height of the displacement ring.

[0009] Preferably, the adaptive adjustment mechanism includes a guide cylinder, which is fixedly connected to the bottom of the water tank. The guide cylinder is hollow to facilitate the discharge of water from the guide cylinder.

[0010] A float is slidably connected inside the guide cylinder. The float is composed of a rod and a ball, and both the rod and the ball can float in water.

[0011] A limiting ring is provided on the outer ring surface of the float rod, and the limiting ring is fixedly connected to the side wall of the inner cavity of the water tank;

[0012] The outer ring of the pontoon is slidably connected to a displacement ring.

[0013] Preferably, the outer ring surface of the displacement ring is hinged to a connecting rod via a universal ball joint, and the other end of the connecting rod is hinged to a first displacement block via a universal ball joint.

[0014] The displacement ring is limited by the limiting ring, and its maximum upward floating height cannot keep the connecting rod in a horizontal state.

[0015] Preferably, a displacement rod is fixedly connected to the side of the first displacement block, and the adaptive adjustment mechanism further includes a first fixed rod fixedly connected to the side wall of the water tank. The connecting rod and the displacement rod are both slidably connected in the inner cavity of the first fixed rod, and the upper part of the first fixed rod has an inner cavity.

[0016] The outer ring surface of the displacement rod is fixedly connected to a first fixing plate;

[0017] A sliding block is fixedly connected to the top of the first fixed plate. The sliding block consists of a base and a sliding plate, and the sliding plate slides in the inner cavity of the upper part of the first fixed rod.

[0018] Preferably, multiple sets of sliding blocks and first fixing plates are arranged along the outer ring surface of the displacement rod, and a slot is opened through the top of the first fixing plate, and the slot communicates with the upper cavity of the first fixing rod.

[0019] Preferably, a second displacement block is fixedly connected to the other end of the displacement rod;

[0020] The second displacement block is fixedly connected to a first spring on its side, and the other end of the second displacement block is fixed in the inner cavity of the first fixed rod. The first spring is used to reset the displacement rod.

[0021] Preferably, the bottom of the adjusting plate is rotatably connected to the base of the sliding block, and the sliding arrangement of the first rotating plate and the adjusting plate facilitates the horizontal displacement of the sliding block. The first rotating plate and the adjusting plate form an inclined plate.

[0022] The adaptive adjustment mechanism also includes a second fixed rod, which is fixedly connected to the side wall of the inner cavity of the water tank and located above the first fixed rod and on the same vertical plane. The top of the first rotating plate is rotatably connected to the bottom of the second fixed rod.

[0023] Preferably, the adaptive adjustment mechanism is provided with a floating cleaning mechanism on its side for cleaning. The floating cleaning mechanism includes a float block, which is fixedly connected to the side wall of the float. A second rotating plate is rotatably connected to the lower part of the side of the float block. A second spring is fixedly connected to the side of the second rotating plate. A second fixing plate is fixedly connected to the other end of the second spring. The second fixing plate is fixedly connected to the upper part of the side of the float block.

[0024] Preferably, the second rotating plate rotates on the side wall of the float via a rotating shaft, the second spring is fixed to the top of the second rotating plate, and both the second fixed plate and the second rotating plate are in an inclined state and are not on the same plane.

[0025] The working method of a multi-stage adjustable-angle inclined plate high-density sedimentation tank is as follows:

[0026] Water intake and mixing: Wastewater enters the water tank through the inlet, and coagulant and coagulant aid are added at the same time. The wastewater is stirred to complete the flocculation reaction.

[0027] Sedimentation and separation stage: When water of different densities is injected, different buoyancy will be generated at the same height. At this time, the upward height of the limiting ring will drive the displacement ring and the end connected to it to rise synchronously. Since the connecting rod is a straight rod, when the connecting rod rises, it will push the connecting rod connected to it to move horizontally along the guide of the first fixed rod. When moving, it will drive the sliding block's slide plate to slide in the cavity at the top of the first fixed rod, thereby driving the bottom of the adjusting plate to move away from the limiting ring. Since the top of the first rotating plate is fixed by the second fixed rod of the base, when the bottom of the adjusting plate moves, the first rotating plate will also rotate while contracting inward, thus completing the adjustment of the inclined plate.

[0028] Clean water collection and sludge discharge: After sedimentation, the water will be discharged through the drain pipe. When the discharge is completed, the sludge suction device at the bottom of the water tank will be activated to suck the sludge out of the water tank.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. The multi-stage inclined plate adjustable angle high-density sedimentation tank of the present invention, after the sewage in the holding tank has settled for a period of time, the high-density solid particles contained in the upper part will settle to the bottom of the sedimentation tank under the action of density difference and gravity, thereby making the density of the upper part of the holding tank closer to the density of clear water. Since the displacement ring is located in the middle area of ​​the water height in the holding tank, the buoyancy will decrease accordingly due to the decrease in water density. Since the connecting rod always maintains an inclined state when it moves to the maximum amplitude, that is, the upward height of the displacement ring is always lower than the position of the first displacement block, when the water density decreases, the displacement rod will move closer to the first displacement block due to the influence of the first spring. As the float moves, the sliding block in the cavity at the top of the first fixed rod also moves synchronously. This causes the bottom of the adjusting plate to move, which in turn reduces the tilt angle of the inclined plate formed by the adjusting plate and the first rotating plate. This increases the horizontal projected area of ​​the inclined plate, prolongs the residence time of particles between the plates, and improves the capture rate of fine particles. By adjusting the angle of the inclined plate formed by the adjusting plate and the first rotating plate in real time according to the density of the water, the inclined plate can adapt to changes in water density in a timely manner, thereby improving sedimentation efficiency, reducing the amount of coagulant added or prolonging the residence time, and thus reducing the cost of wastewater treatment.

[0031] 2. In the multi-stage inclined plate adjustable angle high-density sedimentation tank of the present invention, when the water in the holding tank is discharged outward at a low flow rate, the water level in the holding tank will drop accordingly, which will drive the float to move downward synchronously. Since the bottom of the second rotating plate is rotatably connected to the side wall of the float, and the elastic force of the second spring acts directly on the top of the second rotating plate, during the movement, the second spring will adapt to the inclination of the adjusting plate and the first rotating plate to compress or reset accordingly, and ensure that the upper part of the second rotating plate is always in contact with the side of the adjusting plate and the first rotating plate. At this time, the float and the water level drop slowly in sync, so that the water body is in a relatively static or low flow rate state, and the local flow rate change caused by the movement of the second rotating plate is small, thereby reducing the disturbance caused by scraping, which is conducive to ensuring the stability of the effluent quality. Attached Figure Description

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the position and structure of the water tank and the adaptive adjustment mechanism shown in this invention;

[0035] Figure 3 This is a three-dimensional structural diagram of the adaptive adjustment mechanism shown in this invention;

[0036] Figure 4 This is the invention shown Figure 3 Enlarged structural diagram at point A in the middle;

[0037] Figure 5 This is a schematic diagram of the internal structure of the first fixing rod shown in this invention;

[0038] Figure 6 This is an exploded structural diagram of the adaptive adjustment mechanism components shown in this invention;

[0039] Figure 7 This is a schematic diagram of the position and structure of the adaptive adjustment mechanism and the floating cleaning mechanism shown in this invention;

[0040] Figure 8 This is the invention shown Figure 7 Enlarged structural diagram at point B.

[0041] In the diagram: 1. Sedimentation tank body; 101. Water holding tank; 102. Water inlet;

[0042] 2. Adaptive adjustment mechanism; 201. Guide cylinder; 202. Float; 203. Limiting ring; 204. Displacement ring; 205. Connecting rod; 206. First displacement block; 207. Displacement rod; 208. Sliding block; 209. First fixing plate; 210. First fixing rod; 211. Second displacement block; 212. First spring; 213. Adjusting plate; 214. First rotating plate; 215. Second fixing rod;

[0043] 3. Floating cleaning mechanism; 301. Float; 302. Second rotating plate; 303. Second spring; 304. Second fixed plate. Detailed Implementation

[0044] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0045] Example 1

[0046] like Figures 1 to 8 As shown, one embodiment of the present invention is as follows:

[0047] A multi-stage inclined plate adjustable angle high-density sedimentation tank includes a sedimentation tank body 1, the sedimentation tank body 1 includes a water holding tank 101, the side wall of the water holding tank 101 is fixedly penetrated by an inlet 102, and an adaptive adjustment mechanism 2 is provided inside the sedimentation tank body 1.

[0048] The adaptive adjustment mechanism 2 includes a displacement ring 204 that can float according to the density of the water. An adjustment plate 213 is rotatably arranged above the displacement ring 204. A first rotating plate 214 is slidably connected inside the adjustment plate 213. A second fixed rod 215 is arranged on the top of the first rotating plate 214. The magnitude of the buoyancy at the same height can be determined by the density of the water, and the tilt angle between the adjustment plate 213 and the first rotating plate 214 can be determined according to the floating height of the displacement ring 204.

[0049] Specifically, although existing equipment can complete the sedimentation work in the sedimentation tank, the relationship between the inclined plate angle and sedimentation efficiency needs to be based on a fluid dynamics model (such as Stokes' law). However, the actual water quality varies greatly, and the model is difficult to accurately fit all operating conditions (such as floc adhesion, nonlinear factors such as water flow disturbance), which leads to the failure of the control algorithm. This will prevent the inclined plate from adjusting the tilt angle of the inclined plate in real time according to the density in the water. This will cause the inclined plate to be unable to match the settling velocity of the particles. In order to maintain the treatment effect, it is necessary to increase the amount of coagulant added or extend the retention time, which will increase the cost of chemicals, limit the treatment load, and thus increase the cost of sewage treatment.

[0050] Therefore, this invention solves this problem by setting a certain structure. When an intermittent sedimentation tank is needed to treat sewage, sewage is injected into the holding tank 101 through the inlet 102, submerging the inclined plate in the holding tank 101. At the same time, coagulant and flocculant aid are injected and stirred, and then allowed to settle. However, since the relationship between the inclined plate angle and sedimentation efficiency needs to be based on a fluid dynamics model (such as Stokes' law), but the actual water quality varies greatly, the model is difficult to accurately fit all working conditions (such as floc adhesion, nonlinear factors such as water flow disturbance), causing the control algorithm to fail. This will prevent the inclined plate from adjusting its tilt angle in real time according to the density in the water. This will cause the inclined plate to be unable to match the settling velocity of the particles. In order to maintain the treatment effect, it is necessary to increase the amount of coagulant added or extend the sedimentation time. Longer retention times lead to increased reagent costs and limited treatment load, which in turn increases wastewater treatment costs. In this case, the density in the wastewater is determined by the upward buoyancy of the displacement ring 204. When the displacement ring 204 rises, it drives the bottom of the adjusting plate 213 to move. Since the first rotating plate 214 slides inside the adjusting plate 213, and the top of the first rotating plate 214 rotates through the base and the bottom of the second fixed rod 215, the angle adjustment of the first rotating plate 214 and the adjusting plate 213 can be completed when the bottom of the adjusting plate 213 moves. At this time, when the bottom of the adjusting plate 213 moves, the first rotating plate 214 will retract into the adjusting plate 213. The tilt of the inclined plate formed by the first rotating plate 214 and the adjusting plate 213 can be adjusted by the upward buoyancy of the displacement ring 204.

[0051] like Figure 2As shown, the adaptive adjustment mechanism 2 in this embodiment includes a guide cylinder 201, which is fixedly connected to the bottom of the water tank 101. The guide cylinder 201 is hollow to facilitate the discharge of water from the guide cylinder 201.

[0052] The guide cylinder 201 is slidably connected to a float 202, which is composed of a rod and a ball, and both the rod and the ball can float in the water.

[0053] The outer ring of the float 202 rod is provided with a limiting ring 203, which is fixedly connected to the inner wall of the water tank 101.

[0054] The outer ring surface of the float 202 is slidably connected to a displacement ring 204.

[0055] Specifically, when sewage needs to be treated by sedimentation, sewage containing a large number of solid particles is discharged into the water tank 101 through the inlet 102. At this time, since the guide tube 201 is hollow, the water will also flow into the guide tube 201 at the same time. Since the float 202 can float up with the buoyancy of the water, when water is injected into the water tank 101, the float 202 will rise along the guide tube 201 as the water level rises.

[0056] like Figure 6 As shown, in this embodiment, the outer ring surface of the displacement ring 204 is hinged to a connecting rod 205 via a universal ball joint, and the other end of the connecting rod 205 is hinged to a first displacement block 206 via a universal ball joint.

[0057] The displacement ring 204 is restricted by the limiting ring 203 to a maximum floating height that prevents the connecting rod 205 from being in a horizontal state.

[0058] Specifically, when water flows into the water tank 101 through the inlet 102, due to transportation and other reasons, impurities in the water will be uniformly mixed with the water. At this time, the density of the water injected into the water tank 101 will be greater than that of the clean water. Since the displacement ring 204 is solid polystyrene (i.e., its density is between that of clean water and high-density turbid water), when sewage is injected into the water tank 101, the displacement ring 204 will float upward along the rod of the float 202 due to the density of the sewage. While floating, it will drive the connecting rod 205 and its hinged end to move upward synchronously. However, due to the setting of the limiting ring 203, the displacement ring 204 will be blocked from moving upward continuously. Therefore, when the top of the displacement ring 204 abuts against the bottom of the limiting ring 203, the inclined plate is at its maximum inclination.

[0059] like Figure 5 and Figure 6As shown, in this embodiment, the first displacement block 206 is fixedly connected to the side of the displacement rod 207. The adaptive adjustment mechanism 2 also includes a first fixed rod 210 fixedly connected to the side wall of the water tank 101. The connecting rod 205 and the displacement rod 207 are both slidably connected in the inner cavity of the first fixed rod 210. The upper part of the first fixed rod 210 has an inner cavity.

[0060] The outer ring surface of the displacement rod 207 is fixedly connected to the first fixing plate 209;

[0061] A sliding block 208 is fixedly connected to the top of the first fixing plate 209. The sliding block 208 consists of a base and a sliding plate, and the sliding plate slides in the inner cavity of the upper part of the first fixing rod 210.

[0062] like Figure 6 As shown, in this embodiment, the bottom of the adjusting plate 213 is rotatably connected to the base of the sliding block 208. The sliding arrangement of the first rotating plate 214 and the adjusting plate 213 facilitates the horizontal displacement of the sliding block 208. The first rotating plate 214 and the adjusting plate 213 form an inclined plate.

[0063] The adaptive adjustment mechanism 2 further includes a second fixed rod 215, which is fixedly connected to the side wall of the inner cavity of the water tank 101 and located above the first fixed rod 210 and on the same vertical plane. The top of the first rotating plate 214 is rotatably connected to the bottom of the second fixed rod 215.

[0064] like Figure 5 As shown, in this embodiment, the other end of the displacement rod 207 is fixedly connected to a second displacement block 211;

[0065] The second displacement block 211 is fixedly connected to the side of the first spring 212, and the other end of the second displacement block 211 is fixed in the inner cavity of the first fixing rod 210. The first spring 212 is used to reset the displacement rod 207.

[0066] Specifically, when the displacement ring 204 floats upward with one end of the connecting rod 205 hinged to it, since the connecting rod 205 slides inside the first fixed rod 210 and is a straight rod, the displacement ring 204 will push the first displacement block 206 to move into the first fixed rod 210 when it floats upward. Since the end of the connecting rod 205 away from the displacement ring 204 is hinged to the first displacement block 206, there will be no jamming during the pushing process.

[0067] When the first displacement block 206 moves into the first fixed rod 210, it simultaneously pushes the displacement rod 207 to move synchronously. Simultaneously, it drives the first fixed plate 209, which is fixed to its outer ring surface, to move linearly. Since the top of the first fixed plate 209 is fixed to the bottom of the sliding block 208's slide plate, when the first fixed plate 209 moves linearly, it simultaneously drives the sliding block 208's slide plate to move linearly along the cavity opened at the top of the first fixed rod 210. Furthermore, since the sliding block 208 and the adjusting plate 213 rotate together via the base, and the first rotating plate 214 sliding inside the adjusting plate 213 is connected... Because the base and the bottom of the second fixed rod 215 rotate, when the sliding block 208 is displaced, it will synchronously drive the adjusting plate 213 to move. At this time, the first rotating plate 214 will slide into the inner cavity of the adjusting plate 213 and rotate through the rotating shaft in the base at its top while sliding. This will increase the overall tilt angle of the inclined plate composed of the adjusting plate 213 and the first rotating plate 214. At this time, the first spring 212 is in a compressed state. By increasing the overall tilt angle of the inclined plate, the residence time of solid particles on the inclined plate can be reduced, the possibility of particle re-suspension can be reduced, and the sedimentation efficiency can be improved.

[0068] After a period of sedimentation, the high-density solid particles in the upper part of the wastewater in the water tank 101 will settle to the bottom of the sedimentation tank due to density differences and gravity. This will make the density of the upper part of the water in the water tank 101 closer to that of clear water. Since the displacement ring 204 is located in the middle of the water level in the water tank 101, the buoyancy will decrease as the water density decreases. Because the connecting rod 205 remains tilted when it reaches its maximum range of motion, meaning the upward height of the displacement ring 204 is always lower than the position of the first displacement block 206, the displacement rod 207 will move closer to the float 202 due to the influence of the first spring 212 when the water density decreases. At this time, the sliding block 208 sliding in the top cavity of the first fixed rod 210 will also move synchronously, which will drive the bottom of the adjusting plate 213 to move synchronously. This will reduce the tilt angle of the inclined plate formed by the adjusting plate 213 and the first rotating plate 214, thereby increasing the horizontal projected area of ​​the inclined plate and prolonging the residence time of particles between the plates, thus improving the capture rate of fine particles. The displacement ring 204 adjusts the angle of the inclined plate formed by the adjusting plate 213 and the first rotating plate 214 in real time according to the density of the water, so that the inclined plate can adapt to the density changes of the water in a timely manner, thereby improving the sedimentation efficiency, reducing the amount of subsequent coagulant added or prolonging the residence time, and thus reducing the cost of sewage treatment.

[0069] like Figure 7 and Figure 8As shown, the adaptive adjustment mechanism 2 in this embodiment is provided with a floating cleaning mechanism 3 for cleaning on its side. The floating cleaning mechanism 3 includes a float 301, which is fixedly connected to the side wall of the float 202. A second rotating plate 302 is rotatably connected to the lower part of the side of the float 301. A second spring 303 is fixedly connected to the side of the second rotating plate 302. A second fixing plate 304 is fixedly connected to the other end of the second spring 303. The second fixing plate 304 is fixedly connected to the upper part of the side of the float 301.

[0070] Specifically, when the water in the water tank 101 is discharged outward at a low flow rate, the water level in the water tank 101 will drop accordingly, which will cause the float 301 to move downward synchronously. Since the bottom of the second rotating plate 302 is rotatably connected to the side wall of the float 301, and the elastic force of the second spring 303 acts directly on the top of the second rotating plate 302, during the movement, the second spring 303 will adapt to the tilt of the adjusting plate 213 and the first rotating plate 214 and compress or reset accordingly, ensuring that the upper part of the second rotating plate 302 is always in contact with the side of the adjusting plate 213 and the first rotating plate 214. At this time, the float 301 and the water level drop slowly in sync, so that the water body is in a relatively static or low flow rate state, and the local flow rate change caused by the movement of the second rotating plate 302 is small, thereby reducing the disturbance caused by scraping, which is conducive to ensuring the stability of the effluent quality.

[0071] Example 2

[0072] like Figures 1 to 8 As shown in the comparative embodiment one, another embodiment of the present invention is: a working method for a multi-stage inclined plate adjustable angle high-density sedimentation tank, the specific steps of which include:

[0073] Water intake and mixing: Wastewater enters the water holding tank 101 through the inlet 102, and coagulant and coagulant aid are added at the same time. The wastewater is stirred to complete the flocculation reaction.

[0074] Sedimentation and separation stage: When water of different densities is injected, different buoyancy will be generated at the same height. At this time, the upward height of the limiting ring 203 will drive the displacement ring 204 and its connected end to rise synchronously. Since the connecting rod 205 is a straight rod, when the connecting rod 205 rises, it will push the connecting rod 205 connected to it to move horizontally along the guide of the first fixed rod 210. When moving, it will drive the sliding block 208 to slide in the cavity at the top of the first fixed rod 210, thereby driving the bottom of the adjusting plate 213 to move away from the limiting ring 203. Since the top of the first rotating plate 214 is fixed by the second fixed rod 215 of the base, when the bottom of the adjusting plate 213 moves, the first rotating plate 214 will also rotate while contracting into the adjusting plate 213, thereby completing the adjustment of the inclined plate.

[0075] Clean water collection and sludge discharge: After sedimentation, the water will be discharged through the drain pipe. When the discharge is completed, the sludge suction device at the bottom of the water tank 101 will be activated to suck the sludge out of the water tank 101.

[0076] Working principle: When sewage needs to be treated by sedimentation, sewage containing a large number of solid particles is discharged into the water tank 101 through the inlet 102. At this time, since the guide tube 201 is hollow, the water will also flow into the guide tube 201 at the same time. Since the float 202 can float up with the buoyancy of the water, when water is injected into the water tank 101, the float 202 will rise along the guide tube 201 as the water level rises.

[0077] When water flows into the water tank 101 through the inlet 102, impurities in the water will mix evenly with the water due to transportation and other reasons. At this time, the density of the water injected into the water tank 101 will be greater than that of the clean water. Since the displacement ring 204 is solid polystyrene (i.e., its density is between that of clean water and high-density turbid water), when sewage is injected into the water tank 101, the displacement ring 204 will float upward along the rod of the float 202 due to the density of the sewage. While floating, it will drive the connecting rod 205 and its hinged end to move upward synchronously. However, due to the setting of the limiting ring 203, the displacement ring 204 will be blocked from moving upward continuously. Therefore, when the top of the displacement ring 204 abuts against the bottom of the limiting ring 203, the inclined plate is at its maximum inclination.

[0078] When the displacement ring 204 floats upward with one end of the connecting rod 205 hinged to it, since the connecting rod 205 slides inside the first fixed rod 210 and is a straight rod, the displacement ring 204 will push the first displacement block 206 to move into the first fixed rod 210 when it floats upward. Since the end of the connecting rod 205 away from the displacement ring 204 is hinged to the first displacement block 206, there will be no jamming during the pushing process.

[0079] When the first displacement block 206 moves into the first fixed rod 210, it simultaneously pushes the displacement rod 207 to move synchronously. Simultaneously, it drives the first fixed plate 209, which is fixed to its outer ring surface, to move linearly. Since the top of the first fixed plate 209 is fixed to the bottom of the sliding block 208's slide plate, when the first fixed plate 209 moves linearly, it simultaneously drives the sliding block 208's slide plate to move linearly along the cavity opened at the top of the first fixed rod 210. Furthermore, since the sliding block 208 and the adjusting plate 213 rotate together via the base, and the first rotating plate 214 sliding inside the adjusting plate 213 is connected... Because the base and the bottom of the second fixed rod 215 rotate, when the sliding block 208 is displaced, it will synchronously drive the adjusting plate 213 to move. At this time, the first rotating plate 214 will slide into the inner cavity of the adjusting plate 213 and rotate through the rotating shaft in the base at its top while sliding. This will increase the overall tilt angle of the inclined plate composed of the adjusting plate 213 and the first rotating plate 214. At this time, the first spring 212 is in a compressed state. By increasing the overall tilt angle of the inclined plate, the residence time of solid particles on the inclined plate can be reduced, the possibility of particle re-suspension can be reduced, and the sedimentation efficiency can be improved.

[0080] After a period of sedimentation, the high-density solid particles in the upper part of the wastewater in the water tank 101 will settle to the bottom of the sedimentation tank due to density differences and gravity. This will make the density of the upper part of the water in the water tank 101 closer to that of clear water. Since the displacement ring 204 is located in the middle of the water level in the water tank 101, the buoyancy will decrease as the water density decreases. Because the connecting rod 205 remains tilted when it reaches its maximum range of motion, meaning the upward height of the displacement ring 204 is always lower than the position of the first displacement block 206, the displacement rod 207 will move closer to the float 202 due to the influence of the first spring 212 when the water density decreases. At this time, the sliding block 208 sliding in the top cavity of the first fixed rod 210 will also move synchronously, which will drive the bottom of the adjusting plate 213 to move synchronously. This will reduce the tilt angle of the inclined plate formed by the adjusting plate 213 and the first rotating plate 214, thereby increasing the horizontal projected area of ​​the inclined plate and prolonging the residence time of particles between the plates, thus improving the capture rate of fine particles. The displacement ring 204 adjusts the angle of the inclined plate formed by the adjusting plate 213 and the first rotating plate 214 in real time according to the density of the water, so that the inclined plate can adapt to the density changes of the water in a timely manner, thereby improving the sedimentation efficiency, reducing the amount of subsequent coagulant added or prolonging the residence time, and thus reducing the cost of sewage treatment.

[0081] When the water in the water tank 101 is discharged outward at a low flow rate, the water level in the water tank 101 will drop accordingly, which will cause the float 301 to move downward synchronously. Since the bottom of the second rotating plate 302 is rotatably connected to the side wall of the float 301, and the elastic force of the second spring 303 acts directly on the top of the second rotating plate 302, during the movement, the second spring 303 will be compressed or reset accordingly to adapt to the inclination of the adjusting plate 213 and the first rotating plate 214, and ensure that the upper part of the second rotating plate 302 is always in contact with the side of the adjusting plate 213 and the first rotating plate 214. At this time, the float 301 and the water level drop slowly in sync, so that the water body is in a relatively static or low flow rate state, and the local flow rate change caused by the movement of the second rotating plate 302 is small, thereby reducing the disturbance caused by scraping, which is conducive to ensuring the stability of the effluent quality.

[0082] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage inclined plate adjustable angle high-density sedimentation tank, comprising a sedimentation tank body (1), wherein the sedimentation tank body (1) includes a water holding tank (101), and an inlet (102) is fixedly penetrated through the side wall of the water holding tank (101), characterized in that: The sedimentation tank body (1) is equipped with an adaptive adjustment mechanism (2); The adaptive adjustment mechanism (2) includes a displacement ring (204) that can float according to the density of the water. An adjustment plate (213) is rotatably arranged above the displacement ring (204). A first rotating plate (214) is slidably connected inside the adjustment plate (213). A second fixed rod (215) is arranged on the top of the first rotating plate (214). The magnitude of the buoyancy at the same height can be determined by the density of the water. Then, the tilt angle between the adjustment plate (213) and the first rotating plate (214) can be determined according to the floating height of the displacement ring (204). The adaptive adjustment mechanism (2) includes a guide cylinder (201), which is fixedly connected to the bottom of the water tank (101). The guide cylinder (201) is hollow to facilitate the discharge of water from the guide cylinder (201). The guide tube (201) is slidably connected to a float (202), which is composed of a rod and a ball, and both the rod and the ball can float in the water; The outer ring of the float (202) is provided with a limiting ring (203), which is fixedly connected to the inner wall of the water tank (101); The outer ring of the float (202) is slidably connected to a displacement ring (204); The outer ring surface of the displacement ring (204) is hinged to a connecting rod (205) via a universal ball joint, and the other end of the connecting rod (205) is hinged to a first displacement block (206) via a universal ball joint. The displacement ring (204) is restricted by the limiting ring (203) and its maximum upward floating height cannot make the connecting rod (205) horizontal. The first displacement block (206) is fixedly connected to a displacement rod (207) on its side. The adaptive adjustment mechanism (2) also includes a first fixed rod (210) fixedly connected to the side wall of the water tank (101). The connecting rod (205) and the displacement rod (207) are both slidably connected in the inner cavity of the first fixed rod (210). The upper part of the first fixed rod (210) has an inner cavity. The displacement rod (207) is fixedly connected to the outer ring surface of the first fixing plate (209); The top of the first fixed plate (209) is fixedly connected to a sliding block (208), which consists of a base and a sliding plate, and the sliding plate slides in the inner cavity of the upper part of the first fixed rod (210).

2. The multi-stage adjustable-angle high-density sedimentation tank according to claim 1, characterized in that: Multiple sets of sliding blocks (208) and first fixing plates (209) are arranged along the outer ring surface of displacement rod (207). The top of the first fixing plate (209) is provided with a slot, and the slot is connected to the upper cavity of the first fixing rod (210).

3. The multi-stage adjustable-angle high-density sedimentation tank according to claim 1, characterized in that: The other end of the displacement rod (207) is fixedly connected to a second displacement block (211); The second displacement block (211) is fixedly connected to the side of the first spring (212), and the other end of the second displacement block (211) is fixed in the inner cavity of the first fixing rod (210). The first spring (212) is used to reset the displacement rod (207).

4. The multi-stage adjustable-angle high-density sedimentation tank according to claim 1, characterized in that: The bottom of the adjusting plate (213) is rotatably connected to the base of the sliding block (208). The sliding arrangement of the first rotating plate (214) and the adjusting plate (213) facilitates the horizontal displacement of the sliding block (208). The first rotating plate (214) and the adjusting plate (213) form an inclined plate. The adaptive adjustment mechanism (2) further includes a second fixed rod (215), which is fixedly connected to the side wall of the inner cavity of the water tank (101) and located above the first fixed rod (210) and on the same vertical plane. The top of the first rotating plate (214) is rotatably connected to the bottom of the second fixed rod (215).

5. The multi-stage adjustable-angle high-density sedimentation tank according to claim 1, characterized in that: The adaptive adjustment mechanism (2) is provided with a floating cleaning mechanism (3) for cleaning on its side. The floating cleaning mechanism (3) includes a float (301). The float (301) is fixedly connected to the side wall of the float (202). A second rotating plate (302) is rotatably connected to the lower part of the side of the float (301). A second spring (303) is fixedly connected to the side of the second rotating plate (302). A second fixing plate (304) is fixedly connected to the other end of the second spring (303). The second fixing plate (304) is fixedly connected to the upper part of the side of the float (301).

6. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 5, characterized in that: The second rotating plate (302) rotates on the side wall of the float (301) via a rotating shaft. The second spring (303) is fixed to the top of the second rotating plate (302). The second fixed plate (304) and the second rotating plate (302) are both in an inclined state and are not on the same plane.

7. A method for operating a multi-stage adjustable-angle inclined plate high-density sedimentation tank, employing the multi-stage adjustable-angle inclined plate high-density sedimentation tank as described in claim 1, characterized in that: Specifically: Water intake and mixing: Wastewater enters the water storage tank (101) through the inlet (102), while coagulant and coagulant aid are added, and the wastewater completes the flocculation reaction by stirring; Sedimentation and separation stage: When water of different densities is injected, different buoyancy will be generated at the same height. At this time, the upward height of the limiting ring (203) will drive the displacement ring (204) and its connected end to rise synchronously. Since the connecting rod (205) is a straight rod, when the connecting rod (205) rises, it will push the connecting rod (205) connected to it to move horizontally along the guide of the first fixed rod (210) and drive the sliding block (208) to slide in the cavity at the top of the first fixed rod (210) during the movement. This will drive the bottom of the adjusting plate (213) to move away from the limiting ring (203). Since the top of the first rotating plate (214) is fixed by the second fixed rod (215) of the base, when the bottom of the adjusting plate (213) moves, the first rotating plate (214) will also rotate while contracting into the adjusting plate (213), thus completing the adjustment of the inclined plate. Water collection and sludge discharge: After sedimentation, the water will be discharged through the drain pipe. When the discharge is completed, the sludge suction device at the bottom of the water tank (101) will be activated to suck the sludge out of the water tank (101).

Images