Crystal silicon carbide processing wastewater treatment device and method

Abstract

The invention discloses a crystal silicon carbide processing wastewater treatment device and method, and relates to the technical field of crystal silicon carbide processing. A plurality of feeding pipes are arranged at the top of the neutralization tank at equal intervals, an acid water mechanism is arranged on the back of the neutralization tank, an alkaline water mechanism is arranged on the front of the neutralization tank, a conveying pipe is arranged at the right end of the neutralization tank, and a flocculation mechanism is arranged at the right end of the conveying pipe; and a U-shaped frame is fixedly mounted on the outer wall of the distributing hopper. According to the device, moisture is effectively prevented from invading the inner wall of the feeding pipe through the material distributing hopper moving up and down, the agent falling uniformity is improved while agent condensation is avoided, the agent scattering range is effectively expanded through rotation of the rotating roller, the contact area between the agent and wastewater is increased, the pH value of the wastewater can be adjusted more quickly, and it is guaranteed that the overall pH value of the wastewater is within the standard reaching range.

Description

Technical Field

[0001] The present invention relates to the technical field of crystal silicon carbide processing, and specifically provides a device and method for treating wastewater from crystal silicon carbide processing. Background Art

[0002] During the production process of silicon carbide crystals, various acid-base solutions and other reagents are usually added and used. If these chemical agents are directly discharged without treatment after the production of silicon carbide crystals is completed, the chemical components contained therein are likely to cause great pollution and harm to the environment, which is not conducive to environmental protection.

[0003] A patent with the patent publication number CN219526362U discloses a device for treating wastewater from crystal silicon carbide processing, including a filtering structure and a neutralizing structure; the filtering structure includes a filtering tank and a workbench, etc.; a filter plate is fixedly connected inside the filtering tank; a drain pipe is fixedly connected to the bottom end of the wastewater tank; currently, existing equipment includes equipment such as a wastewater collection pipeline, a wastewater collection tank, a purification pipe, and a purification device. Among them, one end of the wastewater collection pipeline is connected to the silicon carbide particle size grading system, and the other end is connected to the wastewater collection tank. The wastewater collection tank is connected to equipment such as a purification device and a middle water tank. In the current prior art, various emissions are converged to a designated location for unified treatment. After treatment, filtrate will be generated, and the filtrate will be made into filter cakes for sale as by-products. Before being made into filter cakes, the filtrate needs to be uniformly recovered. When recovering, there will be residues of the filtrate on the filter plate. Excessive residues may cause blockage, affecting the next recovery.

[0004] However, there are still deficiencies in the current device: the device pushes the residual filtrate on the filter plate to the filter pipe through a push plate to avoid filtrate residue. However, it is difficult to quickly and evenly adjust the pH value of the silicon carbide wastewater in the neutralizing tank only by natural neutralization. In the long run, it is easy to reduce the neutralization treatment and pH adjustment effect of the wastewater, and it is difficult to ensure that the overall pH value of the wastewater meets the standard. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a device and method for treating wastewater from crystal silicon carbide processing, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A device for treating crystal silicon carbide processing wastewater includes a neutralization tank. A number of feeding pipes are equidistantly arranged at the top of the neutralization tank. An acid water mechanism is arranged on the back of the neutralization tank, and an alkaline water mechanism is arranged on the front of the neutralization tank. A conveying pipe is arranged at the right end of the neutralization tank, and a flocculation mechanism is arranged at the right end of the conveying pipe. A distributing hopper is slidably installed inside the feeding pipe through a spring at the lower part. A U-shaped frame is fixedly installed on the outer wall of the distributing hopper. A rotating rod is penetrated and rotatably installed at the bottom outer wall of the U-shaped frame. An electric rotating rod is rotatably installed at the top of the inner wall of the neutralization tank. A mixing device for promoting the mixing of wastewater and medicament is arranged below the electric rotating rod. An optimization device for intercepting medicament powder in the wastewater is arranged inside the conveying pipe. A number of sweeping rods are equidistantly and fixedly installed on the outer wall of the top of the electric rotating rod. A mesh plate is fixedly installed above the inside of the neutralization tank. A scraping plate is fixedly installed on the outer wall of the bottom of the electric rotating rod. A number of angular plates are symmetrically and fixedly installed on the outer wall of the scraping plate.

[0007] According to the above technical solution, the neutralization tank is used to neutralize acidic water and alkaline water. The acidic water mechanism is used to collect the wastewater from silicon carbide processing. Both the alkaline water mechanism and the acidic water mechanism are connected to the neutralization tank. The right side of the flocculation mechanism is connected to a filtration tank through a pipeline. The flocculation mechanism is used to reduce the suspension of particulate matter in the wastewater. A partition plate is arranged inside the filtration tank, and an electric telescopic plate is arranged on the right side of the inner wall of the filtration tank. The bottom of the electric telescopic plate contacts the top of the partition plate. The spring provides a vertical reset force for the hopper. The outer wall of the rotating rod is located on the movement track of the sweeping rod. The bottom end of the electric rotating rod movably penetrates inside the mesh plate. The top of the scraping plate contacts the bottom of the mesh plate. The angular plate guides the medicament falling from the mesh plate to fall. The acidic water mechanism and the alkaline water mechanism inject water sources into the neutralization tank synchronously according to a predetermined ratio. The acidic water, namely the wastewater from crystal silicon carbide processing, adjusts the pH value of the wastewater by injecting alkaline water into the neutralization tank. Then, the neutralized wastewater is input into the flocculation mechanism through a delivery pipe for flocculation, and then the flocculated wastewater is input into the filtration tank through a pipeline. The filtrate in the wastewater is separated by the partition plate, and then the electric telescopic plate is relied on to scrape the residual filtrate on the top of the partition plate. The filtrate is discharged from the filtration tank through a pipeline and pressed into cakes, which are sold as by-products. When injecting wastewater into the neutralization tank, a medicament is input into the neutralization tank through a feeding pipe. The medicament falls through the hopper, and the hopper isolates the moisture radiated by the neutralization tank to the inner wall of the feeding pipe by itself. Before that, the electric rotating rod is started. When the electric rotating rod rotates along the top of the inner wall of the neutralization tank, it drives the sweeping rod to revolve. When the sweeping rod revolves, it generates friction force against the outer wall of the rotating rod. At this time, the rotating rod starts to rotate along the outer wall of the U-shaped frame by relying on the friction force, and under the resistance of the sweeping rod, the rotating rod generates an upward movement force. The rotating rod causes the U-shaped frame to push the hopper to slide upward along the inner wall of the feeding pipe. Then, the hopper is reset by the spring force, and so on repeatedly. And the medicament falling from the hopper is guided by the rotating rotating rod, so that it does not gather and falls vertically. When the electric rotating rod rotates, it drives the scraping plate to revolve. When the scraping plate revolves, it scrapes the residual medicament or wastewater particulate matter at the bottom of the mesh plate. The lumped medicament falling through the mesh plate is intercepted by the mesh plate, crushed by the revolving sweeping rod, and the revolving scraping plate drives the angular plate to revolve. During the revolution of the angular plate, the medicament falling is secondarily guided through the inclined plane of the angular plate itself, and the scraping plate continuously pats the falling medicament, so that the medicament is widely distributed in the wastewater during the falling process.

[0008] According to the above technical solution, the mixing device includes a transmission rod. The top of the transmission rod is fixedly installed at the bottom of the electric rotating rod. A plurality of spoiler plates are fixedly installed on the outer wall of the bottom end of the transmission rod. A transmission roller is rotatably installed inside the U-shaped groove of the spoiler plate.

[0009] According to the above technical solution, a non-self-locking reciprocating spiral groove is provided on the outer wall of the transmission rod, and a plurality of spoilers are equidistantly distributed on the outer wall of the transmission rod. A U-shaped groove is provided on the bottom of the spoiler. The outer wall of the transmission roller contacts the bottom of the inner wall of the neutralization tank. When the electric rotating rod rotates, it drives the transmission rod to rotate. The transmission rod drives the spoiler to revolve and disturb the lower part of the neutralization tank. The spoiler drives the transmission roller to revolve along the bottom of the inner wall of the neutralization tank to generate friction. The transmission roller begins to rotate inside the U-shaped groove of the spoiler due to the friction. The transmission roller disturbs the water flow by rotating, thereby increasing the disturbance effect of the spoiler on the wastewater.

[0010] According to the above technical solution, the outer wall of the reciprocating spiral groove of the transmission rod passes through and is movably installed with an arc panel, the outer wall of the arc panel is symmetrically and fixedly installed with two inclined panels, the end of the inclined panel away from the arc panel is fixedly installed with a detection mechanism, the outer wall of the detection mechanism is slidably installed on the inner wall of the neutralization tank, and the detection mechanism detects the pH value of the wastewater inside the neutralization tank, when the transmission rod rotates, it drives the arc panel through the non-self-locking reciprocating spiral groove on its outer wall to generate a downward force and reset, and when the arc panel moves downward and resets, it drives the inclined panel to move synchronously, and the inclined panel drives the detection mechanism to slide synchronously along the inner wall of the neutralization tank.

[0011] According to the above technical solution, the optimization device includes a U-shaped slide plate, the upper and lower ends of which are slidably installed inside the conveying pipe through springs, and the U-shaped slide plate has a built-in heater, a long rod is fixedly installed inside the U-shaped slide plate, a circular ring plate is rotatably installed inside the conveying pipe, a number of interception mesh plates are equidistantly and fixedly installed inside the circular ring plate, and a transmission ring is fixedly installed on one end of the interception mesh plate away from the circular ring plate.

[0012] The U-shaped slide plate is pressed against the bottom surface of the slide plate, and the spring forces the U-shaped slide plate to move horizontally along the inner wall of the conveying pipe, thereby preventing the slide plate from sliding backwards and sliding backwards.

[0013] According to the above technical scheme, a filter plate is installed inside the conveying pipe through spring sliding, and the filter plate is located on the side of the circular plate away from the U-shaped slide plate, and a resistance block is fixedly installed on the edge of the filter plate close to the circular plate, and a semicircular plate is fixedly installed on the side of the circular plate close to the filter plate, and the arc surface of the semicircular plate is in contact with the outer wall of the resistance block. When the circular plate revolves, it drives the semicircular plate to revolve, and when the semicircular plate revolves, the resistance to the resistance block is released, that is, the limit on the filter plate is synchronously released. At this time, the filter plate is changed from a stored force state by the spring elastic force, and drives the resistance block to suddenly hit the outer wall of the circular plate to generate vibration. When the semicircular plate contacts the resistance block again, it pushes the filter plate to reset, and this process is repeated.

[0014] A method for using a crystalline silicon carbide processing wastewater treatment device comprises the following steps: S1: The acid water mechanism and the alkaline water mechanism simultaneously inject water into the neutralization tank in a predetermined ratio. The acid water is the wastewater from the processing of crystalline silicon carbide. The pH value of the wastewater is adjusted by injecting alkaline water into the neutralization tank. Then, the neutralized wastewater is input into the flocculation mechanism through a conveying pipe for flocculation. The flocculated wastewater is then input into the filter tank through a pipeline. The filtrate in the wastewater is separated by a partition, and the residual filtrate on the top of the partition is scraped by an electric telescopic plate. S2: When wastewater is injected into the neutralization tank, the reagent is added into the neutralization tank through the feeding pipe, and the reagent falls through the distribution hopper, and the distribution hopper isolates the moisture radiated by the neutralization tank to the inner wall of the feeding pipe by itself; S3: before this, the electric rotating rod is started, and when the electric rotating rod rotates along the top of the inner wall of the neutralization tank, it drives the sweeping rod to revolve. When the sweeping rod revolves, it contacts the outer wall of the rotating rod to generate friction. At this time, the rotating rod begins to rotate along the outer wall of the U-shaped frame by the friction force, and the sweeping rod causes the rotating rod to generate an upward force under the resistance of the sweeping rod. The rotating rod causes the U-shaped frame to push the material distribution hopper to slide upward along the inner wall of the feeding pipe, and then the material distribution hopper is reset by the elastic force of the spring, and the process repeats; S4: The electric rotating rod rotates and drives the scraper to revolve. The scraper scrapes the residual medicine or wastewater particles at the bottom of the mesh plate. The mesh plate intercepts the agglomerated medicine and crushes it with the help of the sweeping rod. The revolving scraper drives the angle plate to revolve. During the revolving process of the angle plate, the falling medicine is diverted for the second time through its own inclined surface.

[0015] The present invention provides a device and method for treating crystalline silicon carbide processing wastewater. It has the following beneficial effects: (1) The present invention cooperates with a distribution hopper, a U-shaped frame, a rotating stick, an electric rotating rod, a sweeping rod, a mesh plate, a scraper and an angle plate. The distribution hopper that moves up and down effectively isolates moisture from invading the inner wall of the feeding pipe, avoids condensation of the agent, and improves the uniformity of the agent falling. The self-rotation of the rotating stick effectively expands the distribution range of the agent, increases the contact area between the agent and the wastewater, and can adjust the pH value of the wastewater more quickly to ensure that the overall pH value of the wastewater is within the standard range. The scraper effectively avoids clogging of the mesh plate and obstruction of the agent from falling. The scraper and the angle plate revolve, further expanding the dispersion range of the agent on the original basis, and preventing the falling agent from agglomerating, effectively improving the efficiency of adjusting the pH value of the wastewater.

[0016] (2) The present invention adopts the arrangement of a mixing device, and cooperates with an electric rotating rod, a transmission rod, a spoiler, a transmission roller, a curved panel, an inclined panel and a detection mechanism. The spoiler and the transmission roller increase the tumbling rate of the bottom wastewater, so that the mixing effect of the wastewater as a whole and the reagent is better, and at the same time, the wastewater and the alkaline water are fully contacted. The superposition of the two reduces the precipitation of the reagent and improves the accuracy of adjusting the pH value of the wastewater. The detection mechanism slides downward and resets reciprocatingly, effectively expanding its detection range of the wastewater, so that the detection accuracy of the detection mechanism for wastewater of different depths is improved, which makes it easier to understand the neutralization process of the pH value of the wastewater and facilitates the staff to grasp the start time of the next process.

[0017] (3) The present invention optimizes the setting of the device, and cooperates with the detection mechanism, U-shaped slide, long rod, circular plate, interception mesh plate, transmission ring, filter plate, resistance block and semicircular plate. The U-shaped slide plate effectively improves the heating uniformity of the heater on the wastewater inside the conveying pipe, improves the fluidity of the wastewater, and facilitates its full mixing with the coagulant during the flocculation process. At the same time, the interception mesh plate can improve the purity of the wastewater and avoid the undesirable chemical conflict caused by the contact between the undissolved agent and the agent added during the flocculation process; the reciprocating horizontal motion of the filter plate pushes the agent in the water to move towards the interception mesh plate, thereby improving the interception mesh plate's interception effect on the agent. At the same time, the filter plate itself relies on vibration to improve the agent removal efficiency, thereby avoiding the adhesion of agents to the filter holes, which causes the conveying rate of the conveying pipe to the wastewater to slow down, thereby delaying the wastewater treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a cross-sectional schematic diagram of the present invention as a whole; Figure 3 This is a schematic diagram of the peripheral structure of the electric rotating rod of the present invention; Figure 4 It is a cross-sectional schematic diagram of the peripheral structure of the electric rotating rod of the present invention; Figure 5 It is a schematic diagram of the mixing device of the present invention; Figure 6 Schematic diagram of the overall display of the mixing device of the present invention; Figure 7 Schematic diagram of the optimized device of the present invention; Figure 8 Schematic cross-sectional view of the optimized device of the present invention.

[0019] In the figure: 1, neutralization tank; 2, feeding pipe; 3, acid water mechanism; 4, alkaline water mechanism; 5, conveying pipe; 6, flocculation mechanism; 7, filtration tank; 8, partition board; 9, electric telescopic board; 10, material distribution hopper; 11, U-shaped frame; 12, rotating rod; 13, electric rotating rod; 14, sweeping rod; 15, mesh plate; 16, scraper; 17, angular plate; 18, mixing device; 181, transmission rod; 182, spoiler; 183, transmission roller; 184, arc panel; 185, inclined panel; 186, detection mechanism; 19, optimized device; 191, U-shaped sliding plate; 192, long rod; 193, circular ring plate; 194, intercepting mesh plate; 195, transmission ring; 196, filter plate; 197, abutting block; 198, semi-circular plate. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] Please refer to Figures 1-8 , an embodiment of the present invention is: a device for treating crystal silicon carbide processing wastewater, including a neutralization tank 1, a plurality of feeding pipes 2 are equidistantly arranged at the top of the neutralization tank 1, an acid water mechanism 3 is arranged on the back of the neutralization tank 1, an alkaline water mechanism 4 is arranged on the front of the neutralization tank 1, a conveying pipe 5 is arranged at the right end of the neutralization tank 1, a flocculation mechanism 6 is arranged at the right end of the conveying pipe 5, a material distribution hopper 10 is slidably installed inside the lower part of the feeding pipe 2 through a spring, a U-shaped frame 11 is fixedly installed on the outer wall of the material distribution hopper 10, a rotating rod 12 is penetrated and rotatably installed at the bottom outer wall of the U-shaped frame 11, an electric rotating rod 13 is rotatably installed at the top inner wall of the neutralization tank 1, a mixing device 18 for promoting the mixing of wastewater and medicine is arranged below the electric rotating rod 13, an optimized device 19 for intercepting the medicine powder in the wastewater is arranged inside the conveying pipe 5, a plurality of sweeping rods 14 are equidistantly and fixedly installed on the top outer wall of the electric rotating rod 13, a mesh plate 15 is fixedly installed above the inside of the neutralization tank 1, a scraper 16 is fixedly installed on the bottom outer wall of the electric rotating rod 13, and a plurality of angular plates 17 are symmetrically and fixedly installed on the outer wall of the scraper 16.

[0022] The neutralization tank 1 is used to neutralize acidic water and alkaline water. The acidic water mechanism 3 is used to collect the wastewater from silicon carbide processing. Both the alkaline water mechanism 4 and the acidic water mechanism 3 are connected to the neutralization tank 1. The flocculation mechanism 6 is connected to a filtration tank 7 through a pipeline on the right side. The flocculation mechanism 6 is used to reduce the suspension of particulate matter in the wastewater. A partition plate 8 is arranged inside the filtration tank 7. An electric telescopic plate 9 is arranged on the right side of the inner wall of the filtration tank 7. The bottom of the electric telescopic plate 9 contacts the top of the partition plate 8. The spring provides a vertical reset force for the dosing hopper 10. The outer wall of the rotating rod 12 is located on the movement track of the sweeping rod 14. The bottom end of the electric rotating rod 13 movably penetrates inside the mesh plate 15. The top of the scraper 16 contacts the bottom of the mesh plate 15. The angular plate 17 guides the medicine falling from the mesh plate 15 to fall downwards.

[0023] The dosing hopper 10 moving up and down effectively isolates the inner wall of the feeding pipe 2 from moisture invasion, avoids the condensation of the medicine, improves the uniformity of the medicine falling, and the self-rotation of the rotating rod 12 effectively expands the dispersion range of the medicine, increases the contact area between the medicine and the wastewater, and can adjust the pH value of the wastewater faster, ensuring that the overall pH value of the wastewater is within the standard range; the scraping of the scraper 16 effectively avoids the blockage of the mesh holes of the mesh plate 15, prevents the obstruction of the medicine falling, and the scraper 16 and the angular plate 17 rotate around the public axis, further expanding the dispersion range of the medicine on the original basis, and preventing the existence of caking phenomena in the falling medicine, effectively improving the adjustment efficiency of the pH value of the wastewater.

[0024] During use, the acidic water mechanism 3 and the alkaline water mechanism 4 inject water sources into the inside of the neutralization tank 1 synchronously according to a predetermined ratio. The acidic water, namely the crystal silicon carbide processing wastewater, is adjusted by injecting alkaline water into the inside of the neutralization tank 1 to adjust the pH value of the wastewater. Then, the neutralized wastewater is input into the flocculation mechanism 6 through the conveying pipe 5 for flocculation, and then the flocculated wastewater is input into the filtration tank 7 through a pipeline. The filtrate in the wastewater is separated by the partition plate 8, and then the residual filtrate on the top of the partition plate 8 is scraped by the electric telescopic plate 9. The filtrate is discharged from the filtration tank 7 through a pipeline and pressed into cakes for sale as a by-product; when injecting wastewater into the neutralization tank 1, a medicament is input into the inside of the neutralization tank 1 through the feeding pipe 2. The medicament falls through the distributing hopper 10, and the distributing hopper 10 isolates the moisture radiated by the neutralization tank 1 to the inner wall of the feeding pipe 2 by itself. Before that, the electric rotating rod 13 is started. When the electric rotating rod 13 rotates along the top of the inner wall of the neutralization tank 1, it drives the sweeping rod 14 to revolve. When the sweeping rod 14 revolves, it generates frictional force against the outer wall of the rotating rod 12. At this time, the rotating rod 12 starts to rotate along the outer wall of the U-shaped frame 11 by relying on the frictional force, and under the resistance of the sweeping rod 14, the rotating rod 12 generates an upward movement force. The rotating rod 12 causes the U-shaped frame 11 to push the distributing hopper 10 to slide upward along the inner wall of the feeding pipe 2. Then, the distributing hopper 10 returns to its original position by the spring elasticity, and so on repeatedly. And the medicament falling from the distributing hopper 10 is guided by the rotating rotating rod 12, so that it does not gather and fall vertically; when the electric rotating rod 13 rotates, it drives the scraper 16 to revolve. When the scraper 16 revolves, it scrapes the residual medicament or wastewater particles at the bottom of the mesh plate 15. The lumped medicament falling is intercepted by the mesh plate 15 and crushed by the revolving sweeping rod 14. And the revolving scraper 16 drives the angular plate 17 to revolve. During the revolution of the angular plate 17, the medicament falling is secondarily guided by its own inclined plane, and the scraper 16 continuously pats the falling medicament, so that the medicament is widely distributed in the wastewater during the falling process.

[0025] According to the above embodiment, the distributing hopper 10 moving up and down effectively isolates the inner wall of the feeding pipe 2 from moisture invasion, avoids the condensation of the medicament, improves the uniformity of the medicament falling while, the self-rotation of the rotating rod 12 effectively expands the dispersion range of the medicament, increases the contact area between the medicament and the wastewater, and can adjust the pH value of the wastewater faster, ensuring that the overall pH value of the wastewater is within the standard range; the scraping by the scraper 16 effectively avoids the blockage of the mesh holes of the mesh plate 15 and the hindrance of the medicament falling. And the revolution of the scraper 16 and the angular plate 17 further expands the dispersion range of the medicament on the original basis and prevents the existence of lumps in the falling medicament, effectively improving the adjustment efficiency of the pH value of the wastewater.

[0026] Please refer to Figures 1-8 , on the basis of the above embodiment, in another embodiment of the present invention, a mixing device 18 is further included; The mixing device 18 includes a transmission rod 181. The top of the transmission rod 181 is fixedly installed at the bottom of the electric rotating rod 13. A plurality of spoiler plates 182 are fixedly installed on the outer wall of the bottom end of the transmission rod 181. A transmission roller 183 is rotatably installed inside the U-shaped groove of the spoiler plate 182.

[0027] A non-self-locking reciprocating spiral groove is formed on the outer wall of the transmission rod 181. A plurality of spoiler plates 182 are evenly distributed on the outer wall of the transmission rod 181. A U-shaped groove is formed at the bottom of the spoiler plate 182. The outer wall of the transmission roller 183 contacts the bottom of the inner wall of the neutralization tank 1.

[0028] An arc-shaped panel 184 penetrates and is movably installed on the outer wall of the reciprocating spiral groove of the transmission rod 181. Two inclined panels 185 are symmetrically and fixedly installed on the outer wall of the arc-shaped panel 184. A detection mechanism 186 is fixedly installed at one end of the inclined panel 185 away from the arc-shaped panel 184. The outer wall of the detection mechanism 186 is slidably installed on the inner wall of the neutralization tank 1, and the detection mechanism 186 detects the pH value of the wastewater inside the neutralization tank 1.

[0029] The spoiler plate 182 and the transmission roller 183 increase the surging rate of the bottom-layer wastewater, making the overall mixing effect of the wastewater and the medicament better. At the same time, it promotes the full contact between the wastewater and the alkaline water. The superposition of the two reduces the precipitation of the medicament while improving the accuracy of the pH value adjustment of the wastewater. The detection mechanism 186 reciprocates downward and resets, effectively expanding its detection range for the wastewater, improving the detection accuracy of the detection mechanism 186 for wastewater at different depths, facilitating the understanding of the neutralization process of the wastewater pH value, and facilitating the staff to grasp the start time of the next process.

[0030] During use, when the electric rotating rod 13 rotates, it drives the transmission rod 181 to rotate. The transmission rod 181 drives the spoiler plate 182 to perform a revolution disturbance on the lower part inside the neutralization tank 1. The spoiler plate 182 drives the transmission roller 183 to revolve along the bottom of the inner wall of the neutralization tank 1 to generate friction. The transmission roller 183 starts to rotate on its own inside the U-shaped groove of the spoiler plate 182 through the friction. The transmission roller 183 disturbs the water flow through its rotation, thereby adding to the disturbance effect of the spoiler plate 182 on the wastewater. When the transmission rod 181 rotates, it drives the arc-shaped panel 184 to generate a downward movement force and reset through the non-self-locking reciprocating spiral groove on its outer wall. When the arc-shaped panel 184 moves downward and resets, it drives the inclined panel 185 to move synchronously. The inclined panel 185 drives the detection mechanism 186 to slide synchronously along the inner wall of the neutralization tank 1.

[0031] According to the above embodiments, the churning rate of the bottom-layer wastewater is increased through the spoiler 182 and the driving roller 183, so that the overall mixing effect of the wastewater and the chemical agent is better. At the same time, it promotes the full contact between the wastewater and the alkaline water. The superposition of the two reduces the precipitation of the chemical agent while improving the accuracy of adjusting the pH value of the wastewater. By the detection mechanism 186 reciprocating downward and resetting, the detection range of the wastewater is effectively expanded, the detection accuracy of the detection mechanism 186 for wastewater at different depths is improved, which is convenient for understanding the neutralization process of the pH value of the wastewater and for the staff to grasp the start time of the next process.

[0032] Please refer to Figures 1-8 , on the basis of the above embodiments, in another embodiment of the present invention, an optimization device 19 is further included; The optimization device 19 includes a U-shaped slide plate 191. Both the upper and lower ends of the U-shaped slide plate 191 are slidably installed inside the conveying pipe 5 through springs, and a heater is built in the U-shaped slide plate 191. A long rod 192 is fixedly installed inside the U-shaped slide plate 191. A circular ring plate 193 is rotatably installed inside the conveying pipe 5. A number of intercepting net plates 194 are equidistantly and fixedly installed inside the circular ring plate 193. A transmission ring 195 is fixedly installed at one end of the intercepting net plate 194 away from the circular ring plate 193.

[0033] The spring provides a reset force for the horizontal sliding of the U-shaped slide plate 191. The arc surface of the U-shaped slide plate 191 close to one end of the neutralization tank 1 contacts the outer wall of the detection mechanism 186. A non-self-locking spiral groove is opened at one end of the long rod 192 away from the neutralization tank 1. The transmission ring 195 penetrates through and is spirally connected to the outer wall of the spiral groove of the long rod 192.

[0034] A filter plate 196 is slidably installed inside the conveying pipe 5 through a spring. The filter plate 196 is located on the side of the circular ring plate 193 away from the U-shaped slide plate 191. A contact block 197 is fixedly installed at the edge of the side of the filter plate 196 close to the circular ring plate 193. A semi-circular plate 198 is fixedly installed on the side of the circular ring plate 193 close to the filter plate 196. The arc surface of the semi-circular plate 198 contacts the outer wall of the contact block 197.

[0035] Through the U-shaped slide plate 191, the heating uniformity of the wastewater inside the conveying pipe 5 by the heater is effectively improved, the fluidity of the wastewater is improved, which is convenient for it to be fully mixed with the coagulant during the flocculation process. At the same time, the intercepting net plate 194 can improve the purity of the wastewater and avoid the adverse chemical conflict caused by the contact between the un-dissolved chemical agent and the chemical agent added during the flocculation process. Through the reciprocating horizontal movement of the filter plate 196, the chemical agent in the water is pushed towards the direction close to the intercepting net plate 194, improving the intercepting effect of the intercepting net plate 194 on the chemical agent. At the same time, relying on the vibration to improve the removal efficiency of the filter plate 196 itself for the chemical agent, avoiding the slowdown of the conveying rate of the wastewater by the conveying pipe 5 due to the attachment of the chemical agent to the filter holes, thus delaying the wastewater treatment process.

[0036] During use, when the detection mechanism 186 slides downward, the limit on the U-shaped slide plate 191 is released. The U-shaped slide plate 191 drives the heater inside itself to slide horizontally along the inner wall of the conveying pipe 5 by the spring force. Then, the reset detection mechanism 186 abuts against the arc surface of the U-shaped slide plate 191 to generate a reaction force. At this time, the U-shaped slide plate 191 slides back along the inner wall of the conveying pipe 5 by the reaction force. This process repeats. During the movement of the U-shaped slide plate 191, the long rod 192 moves synchronously. When the long rod 192 moves horizontally, it drives the transmission ring 195 to rotate through the spiral groove. When the transmission ring 195 rotates, it drives the interception net plate 194 to generate a rotational force. When the interception net plate 194 revolves, it causes the circular ring plate 193 to revolve along the inner wall of the conveying pipe 5. When the interception net plate 194 revolves, it removes the uncompletely melted medicament in the wastewater conveyed inside the conveying pipe 5 through revolution; when the circular ring plate 193 revolves, it drives the semi-circular plate 198 to revolve. When the semi-circular plate 198 revolves, it releases the abutment against the abutting block 197, that is, synchronously releases the limit on the filter plate 196. At this time, the filter plate 196 is in a state of storing energy by the spring force and drives the abutting block 197 to suddenly impact the outer wall of the circular ring plate 193 to generate vibration. When the semi-circular plate 198 contacts the abutting block 197 again, it pushes the filter plate 196 to reset. This process repeats.

[0037] According to the above embodiment, the U-shaped slide plate 191 effectively improves the heating uniformity of the heater for the wastewater inside the conveying pipe 5, improves the fluidity of the wastewater, and facilitates the full mixing with the coagulant during the flocculation process. At the same time, the interception net plate 194 can improve the purity of the wastewater and avoid the adverse chemical conflict caused by the contact between the un-melted medicament and the medicament added during the flocculation process; the filter plate 196 reciprocates horizontally to push the medicament in the water towards the direction close to the interception net plate 194, improving the interception effect of the interception net plate 194 on the medicament. At the same time, relying on the vibration to improve the removal efficiency of the filter plate 196 itself for the medicament, and avoiding the slowdown of the wastewater conveying rate of the conveying pipe 5 due to the attachment of the medicament to the filter holes, thus delaying the wastewater treatment process.

[0038] A method for using a crystal silicon carbide processing wastewater treatment device includes the following steps: S1: The acid water mechanism 3 and the alkaline water mechanism 4 inject water sources into the neutralization tank 1 synchronously according to a predetermined ratio. The acid water is the crystal silicon carbide processing wastewater. The pH value of the wastewater is adjusted by injecting alkaline water into the neutralization tank 1. Then, the neutralized wastewater is input into the flocculation mechanism 6 through the conveying pipe 5 for flocculation. Then, the flocculated wastewater is input into the filtration tank 7 through a pipeline. The filtrate in the wastewater is separated by the partition plate 8. Then, the electric telescopic plate 9 is used to scrape the residual filtrate on the top of the partition plate 8. S2: When injecting wastewater into the neutralization tank 1, a medicament is input into the neutralization tank 1 through the feeding pipe 2. The medicament falls through the distribution hopper 10, and the distribution hopper 10 isolates the moisture radiated by the neutralization tank 1 from the inner wall of the feeding pipe 2. S3: Before this, start the electric rotating rod 13. When the electric rotating rod 13 rotates along the top inner wall of the neutralization tank 1, it drives the material sweeping rod 14 to revolve. When the material sweeping rod 14 revolves, it contacts the outer wall of the rotating roller 12 to generate frictional force. At this time, the rotating roller 12 starts to rotate along the outer wall of the U-shaped frame 11 by relying on the frictional force. And under the contact of the material sweeping rod 14, a force for the rotating roller 12 to move upward is generated. The rotating roller 12 prompts the U-shaped frame 11 to push the material distribution hopper 10 to slide upward along the inner wall of the feeding pipe 2. After that, the material distribution hopper 10 resets by the spring force, and so on repeatedly; S4: When the electric rotating rod 13 rotates, it drives the scraper 16 to revolve. When the scraper 16 revolves, it scrapes the remaining medicament or wastewater particles at the bottom of the mesh plate 15. The lumped medicament falling is intercepted by the mesh plate 15 and is crushed by the revolving material sweeping rod 14. And the revolving scraper 16 drives the angular plate 17 to revolve. During the revolution of the angular plate 17, the falling medicament is secondarily guided through its own inclined surface.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A device for treating waste water from crystal silicon carbide processing, comprising a neutralization tank (1), characterized in that: A number of feeding pipes (2) are equidistantly arranged at the top of the neutralization tank (1). An acid water mechanism (3) is arranged on the back of the neutralization tank (1), and an alkali water mechanism (4) is arranged on the front of the neutralization tank (1). A conveying pipe (5) is arranged at the right end of the neutralization tank (1), and a flocculation mechanism (6) is arranged at the right end of the conveying pipe (5). A distributing hopper (10) is slidably installed inside the lower part of the feeding pipe (2) through a spring. A U-shaped frame (11) is fixedly installed on the outer wall of the distributing hopper (10). A rotating rod (12) is installed through and rotatably on the outer wall of the bottom end of the U-shaped frame (11). An electric rotating rod (13) is rotatably installed at the top of the inner wall of the neutralization tank (1). A mixing device (18) for promoting the mixing of wastewater and chemicals is arranged below the electric rotating rod (13). An optimization device (19) for intercepting chemical powder in the wastewater is arranged inside the conveying pipe (5). A number of sweeping rods (14) are equidistantly and fixedly installed on the outer wall of the top end of the electric rotating rod (13). A mesh plate (15) is fixedly installed above the inside of the neutralization tank (1). A scraping plate (16) is fixedly installed on the outer wall of the bottom end of the electric rotating rod (13). A number of angular plates (17) are symmetrically and fixedly installed on the outer wall of the scraping plate (16).

2. The wastewater treatment device for processing crystalline silicon carbide according to claim 1, wherein: The neutralization tank (1) is used for neutralizing acid water and alkali water. The acid water mechanism (3) is used for collecting wastewater from silicon carbide processing. Both the alkali water mechanism (4) and the acid water mechanism (3) are communicated with the neutralization tank (1). The right side of the flocculation mechanism (6) is communicated with a filtration tank (7) through a pipeline. The flocculation mechanism (6) is used for reducing the suspension of particulate matter in the wastewater. A partition plate (8) is arranged inside the filtration tank (7). An electric telescopic plate (9) is arranged on the right side of the inner wall of the filtration tank (7). The bottom of the electric telescopic plate (9) contacts the top of the partition plate (8). The spring provides a vertical reset force for the distributing hopper (10). The outer wall of the rotating rod (12) is located on the movement track of the sweeping rods (14). The bottom end of the electric rotating rod (13) movably penetrates inside the mesh plate (15). The top of the scraping plate (16) contacts the bottom of the mesh plate (15). The angular plates (17) guide the chemicals falling from the mesh plate (15) to fall downward.

3. The wastewater treatment device for processing crystalline silicon carbide according to claim 2, wherein: The mixing device (18) includes a transmission rod (181). The top of the transmission rod (181) is fixedly installed at the bottom of the electric rotating rod (13). A number of spoiler plates (182) are fixedly installed on the outer wall of the bottom end of the transmission rod (181). A transmission roller (183) is rotatably installed inside the U-shaped groove of the spoiler plate (182).

4. The wastewater treatment device for processing crystalline silicon carbide according to claim 3, wherein: A non-self-locking reciprocating spiral groove is formed on the outer wall of the transmission rod (181). A number of the spoiler plates (182) are equidistantly distributed on the outer wall of the transmission rod (181). A U-shaped groove is formed at the bottom of the spoiler plate (182). The outer wall of the transmission roller (183) contacts the bottom of the inner wall of the neutralization tank (1).

5. The wastewater treatment device for processing crystalline silicon carbide according to claim 4, wherein: The outer wall of the reciprocating spiral groove of the transmission rod (181) is penetrated by a curved plate (184) which is movably mounted thereon; the outer wall of the curved plate (184) is symmetrically and fixedly mounted with two inclined plates (185); one end of the inclined plate (185) away from the curved plate (184) is fixedly mounted with a detection mechanism (186); the outer wall of the detection mechanism (186) is slidably mounted on the inner wall of the neutralization tank (1); and the detection mechanism (186) detects the pH value of the wastewater inside the neutralization tank (1).

6. The wastewater treatment device for processing crystalline silicon carbide according to claim 5, wherein: The optimization device (19) comprises a U-shaped slide plate (191), the upper and lower ends of the U-shaped slide plate (191) are slidably mounted inside the conveying pipe (5) via springs, and the U-shaped slide plate (191) has a built-in heater, a long rod (192) is fixedly mounted inside the U-shaped slide plate (191), a circular plate (193) is rotatably mounted inside the conveying pipe (5), a plurality of interception mesh plates (194) are equidistantly and fixedly mounted inside the circular plate (193), and a transmission ring (195) is fixedly mounted on one end of the interception mesh plate (194) away from the circular plate (193).

7. The wastewater treatment device for processing crystalline silicon carbide according to claim 6, wherein: The spring provides a restoring force for the horizontal sliding of the U-shaped slide plate (191); the arc surface of one end of the U-shaped slide plate (191) close to the neutralization tank (1) contacts the outer wall of the detection mechanism (186); the end of the long rod (192) away from the neutralization tank (1) is provided with a non-self-locking spiral groove; the transmission ring (195) passes through the interior and is spirally connected to the outer wall of the spiral groove of the long rod (192).

8. The wastewater treatment device for processing crystalline silicon carbide according to claim 7, wherein: A filter plate (196) is slidably mounted inside the delivery pipe (5) via a spring, the filter plate (196) being located on a side of the circular plate (193) away from the U-shaped slide plate (191), a resistance block (197) being fixedly mounted on an edge of a side of the filter plate (196) close to the circular plate (193), a semicircular plate (198) being fixedly mounted on a side of the circular plate (193) close to the filter plate (196), the arc surface of the semicircular plate (198) being in contact with an outer wall of the resistance block (197).

9. A method for using a processing wastewater treatment device for crystalline silicon carbide, which uses a processing wastewater treatment device for crystalline silicon carbide as described in claim 8, characterized in that, The following steps are involved: S1: The acid water mechanism (3) and the alkaline water mechanism (4) simultaneously inject water into the neutralization tank (1) in a predetermined ratio. The acid water is the wastewater from the processing of crystalline silicon carbide. The pH value of the wastewater is adjusted by injecting alkaline water into the neutralization tank (1). The neutralized wastewater is then fed into the flocculation mechanism (6) through a delivery pipe (5) for flocculation. The flocculated wastewater is then fed into a filter tank (7) through a pipeline. The filtrate in the wastewater is separated by a partition (8). The residual filtrate on the top of the partition (8) is scraped by an electric telescopic plate (9). S2: When wastewater is injected into the neutralization tank (1), a reagent is added into the neutralization tank (1) through the feeding pipe (2), and the reagent falls through the distribution hopper (10), while the distribution hopper (10) isolates the moisture radiated from the neutralization tank (1) to the inner wall of the feeding pipe (2); S3: Start the electric rotating rod (13) before this. When the electric rotating rod (13) rotates along the top of the inner wall of the neutralization tank (1), it drives the material sweeping rod (14) to revolve. When the material sweeping rod (14) revolves, it touches the outer wall of the rotating roller (12) to generate frictional force. At this time, the rotating roller (12) starts to rotate along the outer wall of the U-shaped frame (11) by relying on the frictional force, and under the touch of the material sweeping rod (14), a force for the rotating roller (12) to move upward is generated. The rotating roller (12) causes the U-shaped frame (11) to push the material distribution hopper (10) to slide upward along the inner wall of the feeding pipe (2), and then the material distribution hopper (10) resets by the spring elasticity, and so on repeatedly; S4: When the electric rotating rod (13) rotates, it drives the scraper (16) to revolve. When the scraper (16) revolves, it scrapes the remaining medicament or waste water particles at the bottom of the mesh plate (15). The caked medicament is intercepted by the mesh plate (15), and is crushed by revolving and rolling with the help of the material sweeping rod (14). Moreover, the revolving scraper (16) drives the angular plate (17) to revolve. During the revolution of the angular plate (17), the falling medicament is secondarily guided through its own inclined plane.

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