Angle-adjustable high-density sedimentation tank with multi-stage inclined plates and working method of angle-adjustable high-density sedimentation tank

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a multi-stage inclined plate angle-adjustable high-density sedimentation tank and a working method.The multi-stage inclined plate angle-adjustable high-density sedimentation tank comprises a sedimentation tank body, the sedimentation tank body comprises a water containing tank, and a water inlet fixedly penetrates through the side wall of the water containing tank; the inclination angle of an inclined plate composed of an adjusting plate and a first rotating plate can be reduced, and the angle of the inclined plate composed of the adjusting plate and the first rotating plate is adjusted in real time through a displacement ring according to the density of the water body, so that the inclined plate can adapt to the density change of the water body in time, and the sedimentation efficiency can be improved; the method has the advantages that the sewage treatment cost can be reduced by reducing the subsequent coagulant adding amount or prolonging the retention time, the water body is in a relative static state or a low-flow-speed state by synchronously and slowly descending the floating block and the water level, and the local flow speed change caused by the movement of the second rotating plate is small, so that the disturbance caused by scraping can be reduced, and the sewage treatment efficiency is improved. And thus, the stability of the effluent quality is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, in particular to a multi-stage inclined plate high-density sedimentation tank with adjustable angles and a working method. Background Art

[0002] The multi-stage inclined plate with adjustable angle high-density sedimentation tank is a highly efficient water treatment facility. It is based on inclined tube sedimentation and sludge circulation and reflow technology, organically combining functions such as mixing, flocculation, sedimentation, and sludge concentration. The multi-stage inclined plate design increases the sedimentation area and improves the sedimentation efficiency. At the same time, the inclined plate angle can be adjusted to meet the needs of different working conditions, thereby efficiently removing suspended matter and impurities in the water in a compact structure.

[0003] In the existing technology, when the multi-stage inclined plate adjustable angle high-density sedimentation tank is working, the sedimentation area of ​​the multi-stage adjustable angle inclined plate that will complete the previous work will adjust the angle of the inclined plate in advance according to the water quality and treatment requirements to optimize the sedimentation effect. The flocs will settle and separate on the surface of the inclined plate, slide down the inclined plate to the mud hopper at the bottom of the tank, and the clarified water will rise through the gap between the inclined plates to the water outlet area for discharge; part of the sludge at the bottom of the tank will flow back to the flocculation area to enhance the flocculation effect, and part will be discharged regularly, thereby achieving efficient solid-liquid separation.

[0004] There are still some problems in the actual application of the above scheme. Although the existing equipment can complete the sedimentation work of the sedimentation tank, the relationship between the inclined plate angle and the sedimentation efficiency needs to be based on a fluid mechanics model (such as Stokes' law). However, the actual water quality varies greatly, and it is difficult for the model to accurately fit all working conditions (such as floc adhesion, water flow disturbance and other nonlinear factors), resulting in the failure of the control algorithm. This will make it impossible for the inclined plate to adjust the inclination angle of the inclined plate in real time according to the density in the water body, which will cause the inclined plate to be unable to match the settling rate of the particles. In order to maintain the treatment effect, it is necessary to increase the amount of coagulant added or extend the residence time, resulting in increased chemical costs and limited treatment load, which will increase the cost of sewage treatment.

[0005] To this end, the present invention provides a high-density sedimentation tank with a multi-stage inclined plate and adjustable angle and a working method. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: 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 storage tank, a water inlet is fixedly penetrated through the side wall of the water storage tank, and an adaptive adjustment mechanism is provided inside the sedimentation tank body; The adaptive adjustment mechanism includes a displacement ring that can float according to the density of the water body. An adjustment plate is rotatably arranged above the displacement ring. A first rotating plate is slidably connected inside the adjustment plate. A second fixed rod is provided on the top of the first rotating plate. The density of the water body can determine the size of the buoyancy at the same height, and then the inclination angle of the adjustment plate and the first rotating plate can be determined according to the floating height of the displacement ring.

[0008] Preferably, the adaptive adjustment mechanism includes a guide cylinder, which is fixedly connected to the bottom of the water tank and is hollow to facilitate the discharge of water from the guide cylinder; A float is slidably connected to the interior of the guide cylinder, and the float consists of a rod and a sphere, and both the rod and the sphere can float in water; A limit ring is provided on the outer annular surface of the buoy rod, and the limit ring is fixedly connected to the side wall of the inner cavity of the water storage tank; The outer ring surface of the buoy is slidably connected with a displacement ring.

[0009] 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 the first displacement block via a universal ball joint; The displacement ring is restricted by the limiting ring so that the maximum floating height cannot make the connecting rod in a horizontal state.

[0010] Preferably, a displacement rod is fixedly connected to the side of the first displacement block, and the adaptive adjustment mechanism further comprises a first fixing rod fixedly connected to the side wall of the water tank, the connecting rod and the displacement rod are both slidably connected to the inner cavity of the first fixing rod, and the upper part of the first fixing rod is provided with an inner cavity; The outer ring surface of the displacement rod is fixedly connected to a first fixing plate; A sliding block is fixedly connected to the top of the first fixing plate. The sliding block consists of a base and a slide plate, and the slide plate slides in the inner cavity of the upper part of the first fixing rod.

[0011] Preferably, the sliding block and the first fixing plate are provided in multiple groups along the outer annular surface of the displacement rod, a slot is provided through the top of the first fixing plate, and the slot is communicated with the upper cavity of the first fixing rod.

[0012] Preferably, the other end of the displacement rod is fixedly connected to a second displacement block; A first spring is fixedly connected to a side surface of the second displacement block. The other end of the second displacement block is fixed in the inner cavity of the first fixing rod. The first spring is used to reset the displacement rod.

[0013] Preferably, the bottom of the adjustment plate is rotatably connected to the base of the sliding block, the sliding arrangement of the first rotating plate and the adjustment plate facilitates the horizontal displacement of the sliding block, and the first rotating plate and the adjustment plate form an inclined plate; The adaptive adjustment mechanism also includes a second fixed rod, which is fixedly connected to the side wall of the water tank cavity and is 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.

[0014] Preferably, a floating cleaning mechanism for cleaning is provided on the side of the adaptive adjustment mechanism, and the floating cleaning mechanism includes a floating block, which is fixedly connected to the side wall of the float, and the lower part of the side of the floating block is rotatably connected to a second rotating plate, and the side of the second rotating plate is fixedly connected to a second spring, and the other end of the second spring is fixedly connected to a second fixed plate, and the second fixed plate is fixedly connected to the upper part of the side of the floating block.

[0015] Preferably, the second rotating plate rotates on the side wall of the floating block through the rotating shaft, the second spring is fixed on the top of the second rotating plate, and the second fixed plate and the second rotating plate are both in an inclined state and are not on the same plane.

[0016] The working method of the multi-stage inclined plate adjustable angle high-density sedimentation tank is as follows: Water inlet and mixing: sewage enters the water storage tank through the water inlet, coagulant and coagulant aid are added at the same time, and the sewage is stirred to complete the flocculation reaction; Sedimentation and separation stage: When water of different densities is injected, different buoyancy will be generated at the same height. At this time, the floating height of the limit ring drives 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 pushes the connecting rod connected to it to move horizontally along the guide of the first fixed rod and drives the slide of the sliding block to slide in the cavity at the top of the first fixed rod during movement, thereby driving the bottom of the adjustment plate to move away from the limit ring. Since the top of the first rotating plate is fixed by the second fixed rod of the base, when the bottom of the adjustment plate moves, the first rotating plate will shrink into the inside of the adjustment plate and rotate at the same time, thereby completing the adjustment of the inclined plate. Clean water collection and sludge discharge: The water after sedimentation will be discharged through the drain pipe. When the discharge is completed, the sludge suction device at the bottom of the water tank will start to suck the sludge out of the water tank.

[0017] The beneficial effects of the present invention are as follows: 1. The multi-stage inclined plate adjustable angle high-density sedimentation tank described in the present invention, after the sewage inside the water storage 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 water body in the upper part of the water storage tank closer to the density of clean water. Since the displacement ring is in the middle area of ​​the water body height in the water storage tank, the buoyancy will decrease accordingly due to the decrease in water density. Since the connecting rod always maintains an inclined state when moving to the maximum amplitude, that is, the buoyancy 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 be affected by the first spring to move closer to the water body. The float moves in the direction of the float, and the sliding block sliding in the cavity at the top of the first fixed rod will also move synchronously, which will synchronously drive the bottom of the adjusting plate to move, thereby reducing the inclination angle of the inclined plate composed of the adjusting plate and the first rotating plate, thereby increasing the horizontal projection area of ​​the inclined plate and extending the residence time of particles between the plates, thereby improving the capture rate of fine particles, and adjusting the angle of the inclined plate composed of the adjusting plate and the first rotating plate in real time according to the density of the water body through the displacement ring, so that the inclined plate can adapt to the density change of the water body in time, thereby improving the sedimentation efficiency, reducing the subsequent coagulant dosage or extending the residence time, and thereby reducing the cost of sewage treatment.

[0018] 2. The multi-stage inclined plate adjustable angle high-density sedimentation tank described in the present invention, when the water in the water tank is discharged outward at a low flow rate, the water level in the water tank will drop accordingly, thereby driving the floating block to move downward synchronously. Since the bottom of the second rotating plate and the side wall of the floating block are rotatably connected, and the elastic force of the second spring directly acts on the top of the second rotating plate, the second spring will adapt to the inclination of the adjusting plate and the first rotating plate to perform corresponding compression or reset during the movement process, 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 floating block and the water level slowly drop synchronously, so that the water body is in a relatively static or low flow rate state, and the local flow velocity 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 water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the position structure of the water storage tank and the adaptive adjustment mechanism shown in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the adaptive adjustment mechanism shown in the present invention; Figure 4 The present invention shows Figure 3 A in the middle is an enlarged structural diagram; Figure 5 is a schematic diagram of the internal structure of the first fixing rod shown in the present invention; Figure 6 It is a schematic diagram of the exploded structure of the components of the adaptive adjustment mechanism shown in the present invention; Figure 7 It is a schematic diagram of the position structure of the adaptive adjustment mechanism and the floating cleaning mechanism shown in the present invention; Figure 8 The present invention shows Figure 7 Enlarged structural diagram at point B in the middle.

[0021] In the figure: 1, sedimentation tank body; 101, water storage tank; 102, water inlet; 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 fixed plate; 210. First fixed rod; 211. Second displacement block; 212. First spring; 213. Adjustment plate; 214. First rotating plate; 215. Second fixed rod; 3. Floating cleaning mechanism; 301. Floating block; 302. Second rotating plate; 303. Second spring; 304. Second fixed plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Example 1 like Figures 1 to 8 As shown, one embodiment of the present invention is: A multi-stage inclined plate with adjustable angle high-density sedimentation tank includes a sedimentation tank body 1, wherein the sedimentation tank body 1 includes a water storage tank 101, a water inlet 102 is fixedly penetrated through the side wall of the water storage tank 101, and an adaptive adjustment mechanism 2 is provided inside the sedimentation tank body 1; The adaptive adjustment mechanism 2 includes a displacement ring 204 that can float according to the density of the water body. 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 provided on the top of the first rotating plate 214. The density of the water body can determine the size of the buoyancy at the same height and then determine the inclination angle of the adjustment plate 213 and the first rotating plate 214 according to the floating height of the displacement ring 204.

[0024] Specifically, although existing equipment can complete the sedimentation work in sedimentation tanks, the relationship between the inclined plate angle and sedimentation efficiency must be based on a fluid dynamics model (such as Stokes' law). However, actual water quality varies greatly, and it is difficult for the model to accurately fit all working conditions (such as nonlinear factors such as floc adhesion and water flow disturbance). As a result, the control algorithm fails, which makes it impossible for the inclined plate to adjust its tilt angle in real time according to the density in the water body. This makes it impossible for the inclined plate to match the settling velocity of the particles. In order to maintain the treatment effect, it is necessary to increase the coagulant dosage or extend the residence time, resulting in increased chemical costs and limited treatment load, which in turn increases the cost of sewage treatment. Therefore, the present invention solves this problem by setting up a certain structure. When an intermittent sedimentation tank is needed to treat sewage, the sewage is injected into the water tank 101 through the water inlet 102, and the inclined plate in the water tank 101 is submerged. At the same time, coagulant and coagulant aid are injected into the water tank 101 and stirred, and the water is allowed to stand. However, since the relationship between the inclined plate angle and the sedimentation efficiency needs to be based on a fluid mechanics model (such as Stokes' law), but the actual water quality varies greatly, it is difficult for the model to accurately fit all working conditions (such as floc adhesion, water flow disturbance and other nonlinear factors), resulting in failure of the control algorithm. This will make it impossible for the inclined plate to adjust the inclination angle of the inclined plate in real time according to the density in the water body, which 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 delay The long residence time leads to an increase in the cost of chemicals and a limited treatment load, which in turn increases the cost of sewage treatment. At this time, the density of the sewage is determined by the floating height of the displacement ring 204. When the displacement ring 204 floats, it will drive the bottom of the adjustment plate 213 to move. Since the first rotating plate 214 slides inside the adjustment plate 213, and the top of the first rotating plate 214 is rotated through the base and the bottom of the second fixed rod 215, the angle of the first rotating plate 214 and the adjustment plate 213 can be adjusted when the bottom of the adjustment plate 213 moves. At this time, when the bottom of the adjustment plate 213 moves, the first rotating plate 214 will shrink toward the inside of the adjustment plate 213. The inclination of the inclined plate composed of the first rotating plate 214 and the adjustment plate 213 can be adjusted by the floating height of the displacement ring 204.

[0025] like Figure 2 As shown, the adaptive adjustment mechanism 2 of 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. The guide cylinder 201 is internally slidably connected to a float 202, which is composed of a rod and a sphere, and both the rod and the sphere can float in water; The outer annular surface of the rod of the float 202 is provided with a limit ring 203, and the limit ring 203 is fixedly connected to the side wall of the inner cavity of the water storage tank 101; The outer ring surface of the buoy 202 is slidably connected to a displacement ring 204 .

[0026] Specifically, when sewage needs to be precipitated, the sewage containing a large amount of solid particles will be discharged into the water tank 101 through the water inlet 102. At this time, since the guide cylinder 201 is in a hollow state, the water flow will also flow into the guide cylinder 201 synchronously. At the same time, since the float 202 can float up by utilizing the buoyancy of the water body, when water is injected into the water tank 101, the float 202 will rise along the guidance of the guide cylinder 201 as the water level rises.

[0027] like Figure 6 As shown, the outer surface of the displacement ring 204 of this embodiment 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 so that the maximum floating height cannot make the connecting rod 205 in a horizontal state.

[0028] Specifically, when water flows into the water tank 101 through the water inlet 102, impurities in the water body will be evenly mixed with the water body due to reasons such as transportation. At this time, the density of the water body injected into the water tank 101 will be greater than the density of clean water. Since the displacement ring 204 is solid polystyrene (that is, its density is between 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, and at the same time, it will drive the connecting rod 205 to move upward synchronously with the hinged end thereof. However, due to the setting of the limit ring 203, the continuous upward movement of the displacement ring 204 will be blocked. Therefore, when the top of the displacement ring 204 is against the bottom of the limit ring 203, the inclined plate is at the maximum inclination.

[0029] like Figure 5 and Figure 6 As shown, in this embodiment, a displacement rod 207 is fixedly connected to the side of the first displacement block 206, and the adaptive adjustment mechanism 2 further includes a first fixing 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 to the inner cavity of the first fixing rod 210. The upper portion of the first fixing rod 210 defines an inner cavity. The outer ring surface of the displacement rod 207 is fixedly connected to a first fixing plate 209; A sliding block 208 is fixedly connected to the top of the first fixing plate 209 . The sliding block 208 is composed of a base and a slide plate, and the slide plate slides in the inner cavity of the upper portion of the first fixing rod 210 .

[0030] like Figure 6As shown, the bottom of the adjustment plate 213 of this embodiment is rotatably connected to the base of the sliding block 208. The sliding arrangement of the first rotating plate 214 and the adjustment plate 213 facilitates the horizontal displacement of the sliding block 208. The first rotating plate 214 and the adjustment plate 213 form an inclined plate. The adaptive adjustment mechanism 2 also includes a second fixed rod 215, which is fixedly connected to the side wall of the inner cavity of the water tank 101, and is located on the upper part of 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.

[0031] like Figure 5 As shown, the other end of the displacement rod 207 in this embodiment is fixedly connected to a second displacement block 211; A first spring 212 is fixedly connected to a side surface of the second displacement block 211 . 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 .

[0032] Specifically, when the displacement ring 204 floats upward with one end of the connecting rod 205 hinged thereto, since the connecting rod 205 slides inside the first fixed rod 210 and is a straight rod, the displacement ring 204 pushes the first displacement block 206 to move inside the first fixed rod 210. Since the end of the connecting rod 205 away from the displacement ring 204 is hinged to the first displacement block 206, it will not get stuck during the pushing process. When the first displacement block 206 moves toward the inside of the first fixed rod 210, it will synchronously push the displacement rod 207 to move synchronously, and at the same time, it will drive the first fixed plate 209 fixed to its outer ring surface to move linearly. Since the top of the first fixed plate 209 and the bottom of the slide plate of the sliding block 208 are fixed, when the first fixed plate 209 moves linearly, it will synchronously drive the slide plate of the sliding block 208 to move linearly along the cavity opened at the top of the first fixed rod 210. At the same time, since the sliding block 208 and the adjustment plate 213 are rotated together through the base, and the first rotating plate 214 sliding inside the adjustment plate 213 is The bottom of the base and the second fixed rod 215 rotate, so when the sliding block 208 is displaced, the adjusting plate 213 will be synchronously driven to move. At this time, the first rotating plate 214 will slide toward the inner cavity of the adjusting plate 213 and rotate through the rotating shaft in the base at its top while sliding, thereby increasing the overall inclination 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 inclination angle of the inclined plate, the residence time of solid particles on the inclined plate can be reduced, the possibility of particle re-suspension is reduced, and the sedimentation efficiency is improved. After a period of sedimentation of the sewage in the water storage tank 101, 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 water in the upper part of the water storage tank 101 closer to the density of clean water. Since the displacement ring 204 is in the middle area of ​​the water height of the water storage tank 101, the buoyancy will decrease accordingly due to the decrease in water density. Since the connecting rod 205 always maintains an inclined state when moving to the maximum amplitude, that is, the buoyancy height of the displacement ring 204 is always lower than the position of the first displacement block 206, when the water density decreases, the displacement rod 207 will be moved towards the float 202 under the influence of the first spring 212. At this time, the sliding block 208 sliding in the top cavity of the first fixed rod 210 will also move synchronously, and will synchronously drive the bottom movement of the adjustment plate 213, thereby reducing the inclination angle of the inclined plate composed of the adjustment plate 213 and the first rotating plate 214, thereby increasing the horizontal projection area of ​​the inclined plate and extending the residence time of the particles between the plates, thereby improving the capture rate of fine particles. The displacement ring 204 adjusts the angle of the inclined plate composed of the adjustment plate 213 and the first rotating plate 214 in real time according to the density of the water body, so that the inclined plate can adapt to the density change of the water body in time, thereby improving the sedimentation efficiency, reducing the subsequent coagulant dosage or extending the residence time, and thereby reducing the cost of sewage treatment.

[0033] like Figure 7 and Figure 8 As shown, the side of the adaptive adjustment mechanism 2 described in this embodiment is provided with a floating cleaning mechanism 3 for cleaning, and the floating cleaning mechanism 3 includes a floating block 301, and the floating block 301 is fixedly connected to the side wall of the float 202, and the lower part of the side of the floating block 301 is rotatably connected to the second rotating plate 302, and the side of the second rotating plate 302 is fixedly connected to the second spring 303, and the other end of the second spring 303 is fixedly connected to the second fixed plate 304, and the second fixed plate 304 is fixedly connected to the upper part of the side of the floating block 301.

[0034] 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, thereby driving 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 directly acts on the top of the second rotating plate 302, during the movement, the second spring 303 will adapt to the inclination of the adjusting plate 213 and the first rotating plate 214 to be compressed or reset accordingly, 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 slowly drops synchronously with the water level, so that the water body is in a relatively static or low flow rate state, and the local flow velocity 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 water quality.

[0035] Example 2 like Figures 1 to 8 As shown in the comparative example 1, another embodiment of the present invention is: a working method of a multi-stage inclined plate adjustable angle high-density sedimentation tank, the specific steps include: Water inlet and mixing: Sewage enters the water storage tank 101 through the water inlet 102, and coagulant and coagulant aid are added at the same time, and the sewage is stirred to complete the flocculation reaction; Sedimentation and separation stage: When water of different densities is injected, different buoyancy will be generated at the same height. At this time, the floating height of the limit ring 203 drives the displacement ring 204 to rise synchronously with the end connected to it. Since the connecting rod 205 is a straight rod, when the connecting rod 205 rises, it pushes the connecting rod 205 connected to it to move horizontally along the guide of the first fixed rod 210 and drives the slide of the sliding block 208 to slide in the cavity at the top of the first fixed rod 210 during the movement, thereby driving the bottom of the adjustment plate 213 to move away from the limit 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 adjustment plate 213 moves, the first rotating plate 214 will shrink into the inside of the adjustment plate 213 and will also rotate, thereby completing the adjustment of the inclined plate. Clean water collection and sludge discharge: The water after sedimentation will be discharged through the drain pipe. When the discharge work is completed, the sludge suction device at the bottom of the water tank 101 will start to suck the sludge out of the water tank 101.

[0036] Working principle: when sewage needs to be precipitated, the sewage with a large amount of solid particles will be discharged into the water tank 101 through the water inlet 102. At this time, since the guide cylinder 201 is in a hollow state, the water flow will also flow into the guide cylinder 201 synchronously. At the same time, since the float 202 can float up by utilizing the buoyancy of the water body, when water is injected into the water tank 101, the float 202 will rise along the guidance of the guide cylinder 201 as the water level rises.

[0037] When water flows into the water tank 101 through the water inlet 102, impurities in the water body will be evenly mixed with the water body due to transportation and other reasons. At this time, the density of the water body injected into the water tank 101 will be greater than the density of clean water. Since the displacement ring 204 is solid polystyrene (that is, its density is between 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, and at the same time, it will drive the connecting rod 205 to move upward synchronously with the hinged end thereof. However, due to the setting of the limit ring 203, the continuous upward movement of the displacement ring 204 will be blocked. Therefore, when the top of the displacement ring 204 is against the bottom of the limit ring 203, the inclined plate is at the maximum inclination.

[0038] When the displacement ring 204 floats upward with one end of the connecting rod 205 hinged thereto, since the connecting rod 205 slides inside the first fixed rod 210 and is a straight rod, the displacement ring 204 pushes the first displacement block 206 to move inside the first fixed rod 210. Since the end of the connecting rod 205 away from the displacement ring 204 is hinged to the first displacement block 206, it will not get stuck during the pushing process. When the first displacement block 206 moves toward the inside of the first fixed rod 210, it will synchronously push the displacement rod 207 to move synchronously, and at the same time, it will drive the first fixed plate 209 fixed to its outer ring surface to move linearly. Since the top of the first fixed plate 209 and the bottom of the slide plate of the sliding block 208 are fixed, when the first fixed plate 209 moves linearly, it will synchronously drive the slide plate of the sliding block 208 to move linearly along the cavity opened at the top of the first fixed rod 210. At the same time, since the sliding block 208 and the adjustment plate 213 are rotated together through the base, and the first rotating plate 214 sliding inside the adjustment plate 213 is The bottom of the base and the second fixed rod 215 rotate, so when the sliding block 208 is displaced, the adjusting plate 213 will be synchronously driven to move. At this time, the first rotating plate 214 will slide toward the inner cavity of the adjusting plate 213 and rotate through the rotating shaft in the base at its top while sliding, thereby increasing the overall inclination 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 inclination angle of the inclined plate, the residence time of solid particles on the inclined plate can be reduced, the possibility of particle re-suspension is reduced, and the sedimentation efficiency is improved. After a period of sedimentation of the sewage in the water storage tank 101, 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 water in the upper part of the water storage tank 101 closer to the density of clean water. Since the displacement ring 204 is in the middle area of ​​the water height of the water storage tank 101, the buoyancy will decrease accordingly due to the decrease in water density. Since the connecting rod 205 always maintains an inclined state when moving to the maximum amplitude, that is, the buoyancy height of the displacement ring 204 is always lower than the position of the first displacement block 206, when the water density decreases, the displacement rod 207 will be moved towards the float 202 under the influence of the first spring 212. At this time, the sliding block 208 sliding in the top cavity of the first fixed rod 210 will also move synchronously, and will synchronously drive the bottom movement of the adjustment plate 213, thereby reducing the inclination angle of the inclined plate composed of the adjustment plate 213 and the first rotating plate 214, thereby increasing the horizontal projection area of ​​the inclined plate and extending the residence time of the particles between the plates, thereby improving the capture rate of fine particles. The displacement ring 204 adjusts the angle of the inclined plate composed of the adjustment plate 213 and the first rotating plate 214 in real time according to the density of the water body, so that the inclined plate can adapt to the density change of the water body in time, thereby improving the sedimentation efficiency, reducing the subsequent coagulant dosage or extending the residence time, and thereby reducing the cost of sewage treatment.

[0039] When the water in the water storage tank 101 is discharged outward at a low flow rate, the water level in the water storage tank 101 will drop accordingly, thereby driving 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 directly acts on the top of the second rotating plate 302, during the movement, the second spring 303 will adapt to the inclination of the adjusting plate 213 and the first rotating plate 214 to be compressed or reset accordingly, 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 slowly drops synchronously with the water level, 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 water quality.

[0040] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage inclined plate with adjustable angle high-density sedimentation tank, comprising a sedimentation tank body (1), wherein the sedimentation tank body (1) comprises a water storage tank (101), and a water inlet (102) is fixedly penetrated through the side wall of the water storage tank (101), characterized in that: An adaptive adjustment mechanism (2) is provided inside the sedimentation tank body (1); The adaptive adjustment mechanism (2) comprises a displacement ring (204) capable of floating upward according to the density of a water body, an adjustment plate (213) being rotatably arranged above the displacement ring (204), a first rotating plate (214) being slidably connected inside the adjustment plate (213), and a second fixing rod (215) being arranged on the top of the first rotating plate (214). The size of the buoyancy at the same height can be determined by the density of the water body, and the inclination angle of the adjustment plate (213) and the first rotating plate (214) can be determined according to the floating height of the displacement ring (204).

2. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 1 is characterized by: The adaptive adjustment mechanism (2) comprises a guide cylinder (201), the guide cylinder (201) is fixedly connected to the bottom of the water tank (101), and the guide cylinder (201) is hollow to facilitate the discharge of water from the guide cylinder (201); The guide cylinder (201) is internally slidably connected to a float (202), the float (202) being composed of a rod and a sphere, and both the rod and the sphere can float in water; A limiting ring (203) is provided on the outer ring surface of the rod of the float (202), and the limiting ring (203) is fixedly connected to the side wall of the inner cavity of the water storage tank (101); The outer ring surface of the buoy (202) is slidably connected to a displacement ring (204).

3. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 2 is characterized by: 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 limited by the limiting ring (203) so that the maximum floating height cannot make the connecting rod (205) in a horizontal state.

4. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 3 is characterized by: A displacement rod (207) is fixedly connected to the side of the first displacement block (206), and the adaptive adjustment mechanism (2) further comprises a first fixing rod (210) fixedly connected to the side wall of the water storage tank (101). The connecting rod (205) and the displacement rod (207) are both slidably connected in the inner cavity of the first fixing rod (210), and the upper portion of the first fixing rod (210) is provided with an inner cavity; The outer annular surface of the displacement rod (207) is fixedly connected to a first fixing plate (209); A sliding block (208) is fixedly connected to the top of the first fixed plate (209), and the sliding block (208) is composed of a base and a slide, and the slide slides in the inner cavity of the upper part of the first fixed rod (210).

5. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 4 is characterized by: The sliding block (208) and the first fixing plate (209) are provided in multiple groups along the outer ring surface of the displacement rod (207). A slot is provided through the top of the first fixing plate (209), and the slot is communicated with the upper cavity of the first fixing rod (210).

6. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 4 is characterized by: The other end of the displacement rod (207) is fixedly connected to a second displacement block (211); A first spring (212) is fixedly connected to a side surface of the second displacement block (211), 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).

7. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 1 is characterized by: The bottom of the adjusting plate (213) is rotatably connected to the base of the sliding block (208), and 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 comprises a second fixed rod (215), the second fixed rod (215) being fixedly connected to the side wall of the inner cavity of the water storage tank (101) and being located above the first fixed rod (210) and on the same vertical plane, and the top of the first rotating plate (214) being rotatably connected to the bottom of the second fixed rod (215).

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

9. The multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 8, characterized in that: The second rotating plate (302) rotates on the side wall of the floating block (301) via a rotating shaft, the second spring (303) is fixed on the top of the second rotating plate (302), and the second fixed plate (304) and the second rotating plate (302) are both in an inclined state and are not on the same plane.

10. An operating method of a multi-stage inclined plate adjustable angle high-density sedimentation tank, using the multi-stage inclined plate adjustable angle high-density sedimentation tank according to claim 1, characterized in that: Specifically: Water inlet and mixing: sewage enters the water storage tank (101) through the water inlet (102), and coagulant and coagulant aid are added at the same time, and the sewage is stirred to complete the flocculation reaction; Sedimentation and separation stage: when water of different densities is injected, different buoyancy will be generated at the same height. At this time, the floating height of the limit ring (203) drives the displacement ring (204) and the end connected to it to rise synchronously. Since the connecting rod (205) is a straight rod, when the connecting rod (205) rises, it pushes the connecting rod (205) connected to it to move horizontally along the guide of the first fixed rod (210) and drives the slide of the sliding block (208) to slide in the cavity at the top of the first fixed rod (210) during the movement, thereby driving the bottom of the adjustment plate (213) to move in the direction away from the limit 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 adjustment plate (213) moves, the first rotating plate (214) shrinks toward the inside of the adjustment plate (213) and also rotates, thereby completing the adjustment of the inclined plate. Clean water collection and sludge discharge: The water after sedimentation 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 start to suck the sludge out of the water tank (101).

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