Coagulation impurity filter for 2-chloronicotinic acid production sewage treatment

Abstract

The invention provides a coagulation impurity filter for 2-chloronicotinic acid production sewage treatment, the coagulation impurity filter comprises a sedimentation tank, a shell and an outer shell, a transverse plate, a first partition plate and a second partition plate are fixedly mounted in the sedimentation tank, a flow guide mechanism is rotatably connected in the sedimentation tank, the shell and the outer shell are both fixedly connected with the outer wall of the sedimentation tank, and the first partition plate and the second partition plate are arranged in the shell. A cleaning mechanism is arranged in the shell, a deslagging mechanism is arranged at the bottom of the sedimentation tank, a blocking mechanism is arranged in the shell, a sweeping mechanism is arranged at the bottom of the screen frame, and the interior of the shell communicates with the interior of the sedimentation tank through a water pumping mechanism. According to the sewage treatment device, the sedimentation tank is adopted for conveying sewage, rapid discharge of impurities is achieved through back-and-forth movement of the push plate, multi-stage filtration can be conducted on the sewage with the impurities precipitated through the multiple screen frames, real-time sweeping is achieved while the sewage is conveyed, and the sewage can be quickly discharged through opening of the plugging mechanism and starting of the water pumping mechanism. Impurities collected at the filter screen can be treated, and real-time treatment can be carried out to ensure high efficiency and stability of the filter in working.

Description

Technical Field

[0001] The invention relates to a coagulation impurity filter for treating wastewater produced by 2-chloronicotinic acid, belonging to the technical field of wastewater treatment. Background Art

[0002] 2-Chloronicotinic acid is also known as 2-chloronicotinic acid, and its chemical name is 2-chloro-3-pyridinecarboxylic acid, with molecular formula C6H4ClNO2, molecular weight: 157.55, CAS number: 2942-59-8. Due to its special physiological activity, it is widely used as an intermediate of pesticides and medicines, and can be used to produce agricultural herbicides, insecticides, medical antibiotics, etc. 2-Chloronicotinic acid mainly acts on the highly effective herbicides fluazifop and nicosulfuron; in medicine, 2-Chloronicotinic acid can act on the synthesis of anti-AIDS drugs nevirapine, antidepressant mirtazapine, anti-inflammatory analgesic flufenamic acid, and pranoprofen; in veterinary medicine, there are anti-inflammatory analgesic drugs flunixin meglumine.

[0003] Since 2-chloronicotinic acid has become an important pesticide and pharmaceutical intermediate, its application prospects are very broad. However, due to the lack of a suitable production route, 2-chloronicotinic acid is in short supply worldwide, which seriously restricts the research and development of new medicines and new pesticides, especially in my country. Based on existing raw materials or based on my country's existing chemical industry foundation, exploring new synthesis methods for 2-chloronicotinic acid to guide large-scale industrial production has great practical significance for promoting the application of this type of new, efficient, low-dosage, and safe new medicines and new pesticides.

[0004] At present, chlorination of pyridine with a substituent at position 3 is often used, followed by hydrolysis and acidification to obtain 2-chloronicotinic acid, specifically, 3-cyanopyridine is used in hydrogen peroxide to neutralize the catalyst and maintain a certain temperature to oxidize it to generate N oxide. Since the sewage generated in the production process contains a large amount of impurities such as phosphorus, salt, ammonia nitrogen, COD, etc., the impurities are usually filtered during coagulation and precipitation. However, due to the different particle sizes of impurity particles, it is easy to cause impurities to circulate at the same time when transported with sewage, thereby affecting the treatment effect of sewage. It is difficult to achieve effective filtration of coagulated impurities in the sewage treatment process. It is difficult to ensure effective treatment only through coagulation and precipitation. When the filter is used for treatment, due to the long-term discharge of wastewater, the subsequent filtration effect becomes poor, and the discharge efficiency of wastewater is affected, which brings inconvenience to subsequent operation and treatment. Moreover, more impurities generated after filtration are not easy to be effectively cleaned, affecting the performance of the filter. Summary of the invention

[0005] In order to solve the technical problem of poor coagulation and filtration effect of impurities in sewage during the production of 2-chloronicotinic acid, the present invention provides a coagulation impurity filter for treating sewage produced by 2-chloronicotinic acid.

[0006] The present invention solves the above technical problems through the following technical solutions: The present invention provides a coagulation impurity filter for treating wastewater produced by 2-chloronicotinic acid. The coagulation impurity filter for treating wastewater produced by 2-chloronicotinic acid comprises: A sedimentation tank, wherein a transverse plate, a first partition plate and a second partition plate are fixedly installed inside the sedimentation tank, respectively; the first partition plate is fixedly installed to the top of one end of the transverse plate; the tops of the first partition plate and the second partition plate are fixedly connected to the top plate, and the top plate is fixedly connected to the top of the sedimentation tank; a flow guide mechanism located below the second partition plate is rotatably connected inside the sedimentation tank; one side of the first partition plate is fixedly connected to the inner wall of the sedimentation tank through a mesh frame; the flow guide mechanism is used to control the flow rate of sewage conveyance in the sedimentation tank; the flow guide mechanism is used to control the residence time of sewage in the sedimentation tank according to the impurity content in the sewage, so as to ensure effective coagulation, precipitation and removal of impurities; The invention relates to a shell and an outer shell, wherein the shell and the outer shell are fixedly connected to the outer wall of the sedimentation tank, a cleaning mechanism is arranged inside the shell, a slag discharge mechanism is arranged at the bottom of the sedimentation tank below the cleaning mechanism, a blocking mechanism is arranged inside the outer shell, and the blocking mechanism is arranged correspondingly on one side of the mesh frame, a sweeping mechanism is arranged at the bottom of the mesh frame, and the inside of the outer shell is connected with the inside of the sedimentation tank through a pumping mechanism, the bottom of the sedimentation tank can be cleaned in real time by the cleaning mechanism, impurities can be collected by the back and forth movement of the cleaning mechanism, and impurities can be discharged through the slag discharge mechanism through the linkage between the cleaning mechanism and the slag discharge mechanism, and real-time discharge of impurities can be achieved during sewage transportation, and sewage can be discharged up to standard after multi-stage filtration of impurities by the mesh frame, the collected impurities can be collected inside the outer shell by the blocking mechanism, and sewage and impurities can be separated by the pumping mechanism, and impurities can be quickly cleaned, thereby improving the effective precipitation and filtration of impurities in sewage during the production process of 2-chloronicotinic acid and improving the sewage treatment effect.

[0007] In the present technical solution, the tops of both sides of the sedimentation tank are fixedly connected to the liquid inlet pipe and the liquid outlet pipe respectively, the bottom of the sedimentation tank is fixedly installed with legs for the installation of the slag discharge mechanism, the first partition and the second partition are distributed in parallel, and a reflux pump is fixedly installed on the top of the top plate, and both sides of the reflux pump are fixedly connected to the reflux pipes, one of the reflux pipes extends to the inside of the sedimentation tank between the first partition and the second partition, and the other reflux pipe extends to the other side of the second partition.

[0008] In the present technical solution, the guide mechanism includes a spoiler, which is rotatably connected to the inside of the sedimentation tank. The number of the spoilers is several and evenly distributed. Several spoilers are correspondingly arranged above the cross plate. A first motor is fixedly installed on the outer wall of the sedimentation tank. The output end of the first motor is fixedly connected to one of the spoilers. Turntables located outside the sedimentation tank are fixedly installed at the ends of several spoilers, and two adjacent turntables are respectively rotatably connected to the two ends of the connecting rod.

[0009] In the present technical solution, the shell cross-section is a U-shaped structure and is connected to one side of the bottom of the sedimentation tank. The cleaning mechanism inside the shell includes a belt, and the two ends of the belt are respectively fixedly connected to the two sides of the push plate, and the push plate is slidably connected to the inside of the sedimentation tank. A driving wheel and a plurality of driven wheels are rotatably connected inside the shell, and the belt is in contact with the surfaces of the driving wheel and the driven wheels. A second motor is fixedly installed on the top of the shell, and the output end of the second motor is fixedly connected to the driving wheel.

[0010] In the present technical solution, the push plate is located below the cross plate, and both side surfaces of the push plate are inclined structures. The push plate is slidably connected to the bottom surface of the sedimentation tank. Two symmetrically distributed guide rails are fixedly connected to the inner wall of the sedimentation tank, and notches are provided on the surfaces of the guide rails at both ends of the push plate. The push plate is correspondingly arranged between the two slag discharge mechanisms, and both ends of the sedimentation tank are connected to the belt through-through.

[0011] In the present technical solution, the slag discharge mechanism includes a slag discharge pipe, the cross-section of the slag discharge pipe is a square hollow structure, the slag discharge pipe is fixedly installed on both sides of the bottom of the sedimentation tank, the slag discharge pipe is connected to the slag discharge port opened in the sedimentation tank, and a guide plate is inserted through the side wall of the sedimentation tank on one side of the slag discharge port, the guide plate is an L-shaped structure and slides in a sealed manner with the sedimentation tank, a connecting plate is fixedly connected to the bottom of the guide plate, and a sealing gasket located under the slag discharge pipe is fixedly connected to the top of the connecting plate, and limit plates with a cross-section of an L-shaped structure are fixedly connected on both sides of the connecting plate, and the limit plates are slidably connected to the inside of the groove opened on the outer wall of the slag discharge pipe, the slag discharge pipe is an inclined structure, and the slag discharge pipe is connected to the guide plate by a spring.

[0012] In the present technical solution, a plurality of horizontally distributed mesh frames are provided inside the sedimentation tank, and filter meshes with gradually increasing mesh sizes are provided in the middle of the plurality of mesh frames from bottom to top, and a sealing mechanism is provided on the side wall of the sedimentation tank on one side of the mesh frame, and the sealing mechanism includes a sealing plate, which is rotatably connected to the side wall of the sedimentation tank, the sealing plate is sealed to the side wall of the sedimentation tank, and the sealing plate is sealed and fit to the side end of the mesh frame.

[0013] In the present technical solution, the sweeping brush mechanism includes a brush roller, both ends of which are rotatably connected to the sedimentation tank and the inner wall of the side plate respectively, the side plate is an L-shaped structure and is fixedly connected to the side end of the mesh frame, the number of the brush rollers is several, and the ends of several of the brush rollers are fixedly connected with mutually meshing gears, one of the brush rollers is fixedly connected to the worm gear, and a third motor is fixedly installed on the top of the side plate, the output end of the third motor is fixedly connected to the worm, and the worm is meshingly connected to the worm gear.

[0014] In the present technical solution, an electric push rod is fixedly installed on the top of the shell, the telescopic end of the electric push rod passes through the shell and is rotatably connected to one end of the push rod, and the other end of the push rod is rotatably connected to the sealing plate, and a collecting tube with a screw cap is fixedly connected to the bottom of the shell, and the collecting tube is correspondingly arranged above one side of the push rod, the bottom end of the collecting tube is movably connected to the movable rod, and the two ends of the movable rod are respectively fixedly connected to the upper blocking block and the lower blocking block, and the lower blocking block is located inside the collecting tube.

[0015] In the present technical solution, the water pumping mechanism includes a water pump, which is fixedly connected to a water outlet pipe and a water inlet pipe respectively. The water outlet pipe is located above the top plate, and the water inlet pipe passes through the outer shell and extends to the bottom of the outer shell. An end pipe is fixedly connected to the bottom of the water inlet pipe, and the end pipe is distributed correspondingly to the collecting pipe. The top diameter of the end pipe is larger than the bottom diameter. The inside of the end pipe is movably connected to a movable rod, and the upper end of the movable rod is quickly sealed and slidable with the bottom of the end pipe.

[0016] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0017] The positive and progressive effects of the present invention are: The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater proposed above adopts a sedimentation tank for sewage transportation, and realizes impurity precipitation through coagulation sedimentation, and adjusts the sewage precipitation time according to the impurity content and loss in the sewage, and can be quickly adjusted according to actual needs, and the impurities after precipitation can be effectively cleaned to avoid excessive impurities affecting the sewage transportation efficiency, and realize real-time cleaning function while the sewage is being transported, and the back and forth movement of the push plate is used to realize the rapid discharge of impurities, and the sewage after the impurities are precipitated can be filtered again by setting multiple mesh frames to achieve the standard discharge of sewage, and the real-time cleaning can be realized while the sewage is being transported to avoid the problem that impurities block the mesh and cause the sewage to be unable to be discharged quickly, and the impurities collected at the filter can be processed by opening the sealing mechanism and starting the pumping mechanism, and the real-time processing can be realized to ensure the efficiency and stability of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal front view structure of the present invention.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0021] Figure 4 It is a schematic diagram of the internal top view of the shell of the present invention.

[0022] Figure 5 It is a schematic diagram of the internal top view of the shell of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the spoiler of the present invention.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the slag discharge pipe of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the brush roller of the present invention.

[0026] Fig. 9 It is a schematic diagram of the partial front view of the internal structure of the end pipe of the present invention.

[0027] Fig.10 It is a schematic diagram of the local three-dimensional structure inside the end pipe of the present invention.

[0028] Description of Reference Numerals 101, sedimentation tank; 102, liquid inlet pipe; 103, supporting leg; 104, horizontal plate; 105, first partition plate; 106, second partition plate; 107, top plate; 108, reflux pump; 109, reflux pipe; 110, first motor; 111, spoiler; 112, rotating disk; 113, connecting rod; 114, liquid outlet pipe; 201, housing; 202, second motor; 203, driving wheel; 204, driven wheel; 205, belt; 206, push plate; 207, guide rail; 301, slag discharge pipe; 302, slag discharge port; 303, guide plate; 304, connecting plate; 305, sealing gasket; 306, limit plate; 307, spring; 401, screen frame; 402, brush roller; 403, side plate; 404, gear; 405, worm gear; 406, third motor; 407, worm; 501, outer shell; 502, sealing plate; 503, electric push rod; 504, push rod; 505, collecting pipe; 506, water pump; 507, water outlet pipe; 508, water inlet pipe; 509, end pipe; 510, movable rod; 511, upper blocking block; 512, lower blocking block. DETAILED DESCRIPTION

[0029] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0030] like Figure 1-10 As shown, the coagulation impurity filter for treating 2-chloronicotinic acid production wastewater comprises: A sedimentation tank 101, wherein a transverse plate 104, a first baffle 105 and a second baffle 106 are fixedly installed inside the sedimentation tank 101, wherein the first baffle 105 is fixedly installed to the top of one end of the transverse plate 104, and the tops of the first baffle 105 and the second baffle 106 are fixedly connected to a top plate 107, and the top plate 107 is fixedly connected to the top of the sedimentation tank 101, and a flow guide mechanism located below the second baffle 106 is rotatably connected inside the sedimentation tank 101, and one side of the first baffle 105 is connected by a mesh frame. 401 is fixedly connected to the inner wall of the sedimentation tank 101. The first partition 105 can guide the sewage during transportation. The sewage entering from the liquid inlet pipe 102 enters the net frame 401 from the bottom of the sedimentation tank 101 and is discharged through the liquid outlet pipe 114. The second partition 106 is used to transport the sewage on both sides thereof, so that the sewage can stay in the sedimentation tank 101 and be fully mixed with the flocculant and other agents. The flow direction of the sewage can be adjusted by rotating the spoiler 111, which can be appropriately adjusted according to actual needs. The shell 201 and the outer shell 501 are both fixedly connected to the outer wall of the sedimentation tank 101. A cleaning mechanism is provided inside the shell 201. A slag discharge mechanism is provided at the bottom of the sedimentation tank 101 below the cleaning mechanism. A sealing mechanism is provided inside the outer shell 501, and the sealing mechanism is correspondingly arranged on one side of the mesh frame 401. A sweeping mechanism is provided at the bottom of the mesh frame 401, and the interior of the outer shell 501 is connected with the interior of the sedimentation tank 101 through a pumping mechanism.

[0031] In the present technical solution, the tops of both sides of the sedimentation tank 101 are fixedly connected to the liquid inlet pipe 102 and the liquid outlet pipe 114 respectively, the bottom of the sedimentation tank 101 is fixedly installed with legs 103 for installing the slag discharge mechanism, the first baffle 105 and the second baffle 106 are distributed in parallel, and a reflux pump 108 is fixedly installed on the top of the top plate 107. Both sides of the reflux pump 108 are fixedly connected to the reflux pipe 109, one of the reflux pipes 109 extends to the inside of the sedimentation tank 101 between the first baffle 105 and the second baffle 106, and the other reflux pipe 109 extends to the other side of the second baffle 106. After catalysis, the sewage is transported from the liquid inlet pipe 102 to the sedimentation tank 101, and the impurities contained therein are coagulated and precipitated in the sedimentation tank 101, and discharged from the liquid outlet pipe 114 after meeting the standards. The sewage is transported upward from the bottom of the sedimentation tank 101 through the first partition 105, and the sewage is transported on both sides of the first partition 105. When the sedimentation tank 101 enters the side of the second partition 106, the sewage between the second partition 106 and the first partition 105 is circulated and transported through the reflux pipe 109. The sewage is adjusted according to the impurity content and the transportation efficiency so that the sewage stays in the sedimentation tank 101 for the same time to ensure its smooth adsorption and precipitation.

[0032] In the present technical solution, the guide mechanism includes a spoiler 111, which is rotatably connected to the inside of the sedimentation tank 101. The number of the spoilers 111 is several and evenly distributed. The several spoilers 111 are correspondingly arranged above the cross plate 104. A first motor 110 is fixedly installed on the outer wall of the sedimentation tank 101. The output end of the first motor 110 is fixedly connected to one of the spoilers 111. The ends of the several spoilers 111 are fixedly installed with a turntable 112 located outside the sedimentation tank 101. Two adjacent turntables 112 are rotatably connected to the two ends of the connecting rod 113 respectively. When the electric spoiler 111 of the first motor 110 rotates, the spoiler 111 drives the turntable 112 to rotate synchronously, so that the transmission of the connecting rod 113 drives the multiple turntables 112 to rotate synchronously, and the angle of the spoiler 111 is adjusted by rotating the turntable 112 by a certain angle, so that the sewage entering the sedimentation tank 101 is guided through the spoiler 111. Figure 2 As shown, the spoiler 111 tends to be in a vertical state, and most of the sewage enters the screen frame 401 from below the horizontal plate 104. When the spoiler 111 rotates to a horizontal state, the downward flow rate of the sewage decreases, and the reflux pump 108 is started to transport the sewage between the first partition 105 and the second partition 106 back and forth through the reflux pipe 109 to improve the impurity precipitation effect.

[0033] In the present technical solution, the cross-section of the shell 201 is a U-shaped structure and is connected to one side of the bottom of the sedimentation tank 101. The cleaning mechanism inside the shell 201 includes a belt 205. The two ends of the belt 205 are respectively fixedly connected to the two sides of the push plate 206. The push plate 206 is slidably connected to the inside of the sedimentation tank 101. A driving wheel 203 and a plurality of driven wheels 204 are rotatably connected inside the shell 201. The belt 205 is in surface contact with the driving wheel 203 and the driven wheel 204. A second motor 202 is fixedly installed on the top of the shell 201, and the output end of the second motor 202 is fixedly connected to the driving wheel 203. After a long period of sedimentation, impurities stay at the bottom of the sedimentation tank 101. At this time, the second motor 202 is started, and the second motor 202 drives the driving wheel 203 and the driven wheel 204 to rotate synchronously, so that when the belt 205 drives the push plate 206 to move, the push plate 206 pushes the impurities to one side of the sedimentation tank 101.

[0034] In the present technical solution, the push plate 206 is located below the transverse plate 104, and both sides of the push plate 206 are inclined structures. The push plate 206 is slidably connected to the bottom surface of the sedimentation tank 101. Two symmetrically distributed guide rails 207 are fixedly connected to the inner wall of the sedimentation tank 101, and notches located on the surfaces of the guide rails 207 are opened at both ends of the push plate 206. The push plate 206 is correspondingly arranged between the two slag discharge mechanisms. Both ends of the sedimentation tank 101 are penetrated and connected with the belt 205. By setting the guide rail 207, the stable movement of the push plate 206 can be achieved, so that the belt 205 pulls the push plate 206 to move at the bottom of the sedimentation tank 101, and pushes impurities into the slag discharge pipe 301 through the inclined surfaces on both sides of the push plate 206. The shell 201 is provided to avoid sewage leakage and problems. Even if part of the sewage enters the shell 201 from the gap at the connection between the sedimentation tank 101 and the belt 205, it will not cause sewage leakage problems.

[0035] In the present technical solution, the slag discharge mechanism includes a slag discharge pipe 301, the cross-section of which is a square hollow structure, and the slag discharge pipe 301 is fixedly installed on both sides of the bottom of the sedimentation tank 101, and the slag discharge pipe 301 is connected to the slag discharge port 302 opened in the sedimentation tank 101, and a guide plate 303 is inserted through the side wall of the sedimentation tank 101 on the side of the slag discharge port 302, and the guide plate 303 is an L-shaped structure and is sealed and slidable with the sedimentation tank 101, and pushes the push plate 206 when it moves. The impurities first fall from the slag discharge port 302 to the inside of the slag discharge pipe 301. When the push plate 206 is completely moved to the top of the slag discharge port 302, the push plate 206 contacts the guide plate 303. During the process of the push plate 206 pushing the guide plate 303 to move, the push plate 206 is always located above the slag discharge port 302. The bottom of the guide plate 303 is fixedly connected to a connecting plate 304, and the top of the connecting plate 304 is fixedly connected to a sealing gasket 305 located below the slag discharge pipe 301. Both sides of the connecting plate 304 are A limit plate 306 with an L-shaped cross-section is fixedly connected, and the limit plate 306 is slidably connected to the inside of the notch opened on the outer wall of the slag discharge pipe 301. The slag discharge pipe 301 is an inclined structure, and the slag discharge pipe 301 is connected to the guide plate 303 through a spring 307. When the push plate 206 pushes the impurities to move to one side, the impurities fall into the slag discharge pipe 301. After the push plate 206 passes through the top of the slag discharge port 302 and closes it, the push plate 206 contacts the guide plate 303 and pushes the guide plate 303 and the connecting plate 304 move horizontally, and the movement of the connecting plate 304 is realized through the cooperation of the limit plate 306 and the slag discharge pipe 301, so that the bottom of the slag discharge pipe 301 is opened, and the impurities inside the slag discharge pipe 301 are discharged. When the push plate 206 moves to the other side, the spring 307 resets the guide plate 303. At this time, after the sealing gasket 305 blocks the bottom of the slag discharge pipe 301, the push plate 206 leaves the top of the slag discharge port 302 again, and pushes the impurities into the slag discharge pipe 301 on the other side.

[0036] In the present technical solution, a plurality of horizontally distributed mesh frames 401 are provided inside the sedimentation tank 101, and filter screens with gradually increasing mesh sizes are provided in the middle of the plurality of mesh frames 401 from bottom to top, and a sealing mechanism is provided on the side wall of the sedimentation tank 101 on one side of the mesh frame 401, and the sealing mechanism comprises a sealing plate 502, and the sealing plate 502 is rotatably connected to the side wall of the sedimentation tank 101, and the sealing plate 502 is sealedly connected to the side wall of the sedimentation tank 101, and the sealing plate 502 is sealedly fitted to the side end of the mesh frame 401, and the mesh frame 401 is used for the installation of the filter screen to realize multi-stage filtration of impurities, so that impurities of different particle sizes can be concentrated under the corresponding mesh frame 401.

[0037] In the present technical solution, the sweeping mechanism includes a brush roller 402, the two ends of which are rotatably connected to the sedimentation tank 101 and the inner wall of the side plate 403 respectively, the side plate 403 is an L-shaped structure and is fixedly connected to the side end of the mesh frame 401, the side plate 403 is installed between the first partition plate 105 and the sedimentation tank 101, and the installation of the gear 404 and the worm gear 405 can be realized. At the same time, the third motor 406 is installed on the top of the side plate 403, so that the worm 407 can stably rotate on one side of the side plate 403. The number of the brush rollers 402 is several, and the ends of the several brush rollers 402 are fixedly connected with the corresponding The gears 404 are meshed with each other, wherein one of the brush rollers 402 is fixedly connected to the worm gear 405, and a third motor 406 is fixedly installed on the top of the side plate 403, and the output end of the third motor 406 is fixedly connected to the worm 407, and the worm 407 is meshed with the worm gear 405. When the third motor 406 on the top of the side plate 403 is started, the cooperation of the worm 407 and the worm gear 405 drives one of the gears 404 and the brush roller 402 to rotate, and the reverse synchronous rotation of the multiple brush rollers 402 is achieved by the meshing of multiple gears 404, so as to realize the cleaning of the bottom of the screen frame 401 and avoid the problem of blockage.

[0038] In the present technical solution, an electric push rod 503 is fixedly installed on the top of the housing 501, and the telescopic end of the electric push rod 503 penetrates the housing 501 and is rotatably connected to one end of the push rod 504, and the other end of the push rod 504 is rotatably connected to the sealing plate 502. A collecting tube 505 with a screw cap is fixedly connected to the bottom of the housing 501. The collecting tube 505 is correspondingly arranged above one side of the push rod 504. The bottom end of the collecting tube 505 is movably sleeved with a movable rod 510, and the two ends of the movable rod 510 are respectively connected to the upper block 511 and the lower block 512. The electric push rod 503 is fixedly connected, and the lower blocking block 512 is located inside the collecting pipe 505. When the electric push rod 503 is shortened, it drives the push rod 504 to rotate, so that the push rod 504 pulls the sealing plate 502 to rotate so that the sewage at the screen frame 401 carries the collected impurities into the shell 501, and then the electric push rod 503 is extended to drive the push rod 504 and the sealing plate 502 to reset. When the sealing plate 502 blocks the sedimentation tank 101 on one side of the screen frame 401, the push rod 504 is pressed against the inner wall of the shell 501 to limit the position, so that the collected impurities fall into the collecting pipe 505 for storage.

[0039] In the present technical solution, the pumping mechanism includes a water pump 506, and the water pump 506 is fixedly connected to a water outlet pipe 507 and a water inlet pipe 508 respectively. The water outlet pipe 507 is located above the top plate 107, and the water inlet pipe 508 penetrates the shell 501 and extends to the bottom of the shell 501. The bottom of the water inlet pipe 508 is fixedly connected with an end pipe 509, and the end pipe 509 is distributed correspondingly to the collecting pipe 505. The top diameter of the end pipe 509 is larger than its bottom diameter. The inside of the end pipe 509 is movably connected with a movable rod 510, and the commercial part at the top of the movable rod 510 is sealed and slid with the bottom of the end pipe 509. When the sealing plate 502 is opened and closed, the water pump 506 is started. At this time, a negative pressure is formed inside the water inlet pipe 508, so that the upper block 511 moves upward from the bottom of the end pipe 509 to the end The top of the tube 509, at this time, the air flow inside the end tube 509 is circulating, and when the upper block 511 is located above the end tube 509, the lower block 512 is driven by the movable rod 510 to seal the top of the collecting tube 505. At this time, the sewage inside the shell 501 enters from the end tube 509, and is re-transported to the sedimentation tank 101 through the inlet pipe 508 and the outlet pipe 507 for coagulation and sedimentation. After the operation is completed, unscrew the screw cap at the bottom of the collecting tube 505 to discharge the solid impurities. At this time, the lower block 512 falls under its own weight, so that the top of the collecting tube 505 is opened, and the upper block 511 moves to the bottom of the end tube 509, so that the impurities in the sewage inside the shell 501 are precipitated and stored in the collecting tube 505. When the sewage is pumped out, the precipitated impurities will not enter the shell 501, which is convenient for subsequent treatment of impurities.

[0040] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. A coagulation impurity filter for treating wastewater produced by 2-chloronicotinic acid, characterized in that: The coagulation impurity filter for 2-chloronicotinic acid production wastewater treatment comprises: A sedimentation tank (101), wherein a transverse plate (104), a first baffle (105) and a second baffle (106) are fixedly installed inside the sedimentation tank (101), the first baffle (105) is fixedly installed to the top of one end of the transverse plate (104), the tops of the first baffle (105) and the second baffle (106) are fixedly connected to a top plate (107), and the top plate (107) is fixedly connected to the top of the sedimentation tank (101), a flow guide mechanism located below the second baffle (106) is rotatably connected inside the sedimentation tank (101), and one side of the first baffle (105) is fixedly connected to the inner wall of the sedimentation tank (101) through a mesh frame (401); A shell (201) and an outer shell (501), wherein the shell (201) and the outer shell (501) are both fixedly connected to the outer wall of the sedimentation tank (101), a cleaning mechanism is provided inside the shell (201), a slag discharge mechanism is provided at the bottom of the sedimentation tank (101) below the cleaning mechanism, a blocking mechanism is provided inside the outer shell (501), and the blocking mechanism is correspondingly arranged on one side of the mesh frame (401), a sweeping mechanism is provided at the bottom of the mesh frame (401), and the interior of the outer shell (501) is connected to the interior of the sedimentation tank (101) via a pumping mechanism.

2. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: The tops of both sides of the sedimentation tank (101) are fixedly connected to the liquid inlet pipe (102) and the liquid outlet pipe (114) respectively; the bottom of the sedimentation tank (101) is fixedly installed with supporting legs (103) for installing a slag discharge mechanism; the first baffle (105) and the second baffle (106) are arranged in parallel; a reflux pump (108) is fixedly installed on the top of the top plate (107); both sides of the reflux pump (108) are fixedly connected to reflux pipes (109); one reflux pipe (109) extends to the inside of the sedimentation tank (101) between the first baffle (105) and the second baffle (106); and the other reflux pipe (109) extends to the other side of the second baffle (106).

3. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: The flow guiding mechanism comprises a spoiler (111), wherein the spoiler (111) is rotatably connected to the inside of the sedimentation tank (101), the number of the spoilers (111) is multiple and evenly distributed, and the multiple spoilers (111) are correspondingly arranged above the transverse plate (104), a first motor (110) is fixedly mounted on the outer wall of the sedimentation tank (101), an output end of the first motor (110) is fixedly connected to one of the spoilers (111), and a rotating disk (112) located outside the sedimentation tank (101) is fixedly mounted at the ends of the multiple spoilers (111), and two adjacent rotating disks (112) are rotatably connected to two ends of a connecting rod (113) respectively.

4. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: The shell (201) has a U-shaped cross-section and is connected to one side of the bottom of the sedimentation tank (101). The cleaning mechanism inside the shell (201) comprises a belt (205). Two ends of the belt (205) are respectively fixedly connected to two sides of a push plate (206). The push plate (206) is slidably connected to the inside of the sedimentation tank (101). A driving wheel (203) and a plurality of driven wheels (204) are rotatably connected inside the shell (201). The belt (205) is in contact with the surfaces of the driving wheel (203) and the driven wheels (204). A second motor (202) is fixedly mounted on the top of the shell (201), and an output end of the second motor (202) is fixedly connected to the driving wheel (203).

5. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 4, characterized in that: The push plate (206) is located below the transverse plate (104). Both side surfaces of the push plate (206) are inclined structures. The push plate (206) is slidably connected to the bottom surface of the sedimentation tank (101). Two symmetrically distributed guide rails (207) are fixedly connected to the inner wall of the sedimentation tank (101). Notches are provided at both ends of the push plate (206) on the surface of the guide rails (207). The push plate (206) is correspondingly arranged between the two slag discharge mechanisms. Both ends of the sedimentation tank (101) are connected to the belt (205).

6. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: The slag discharge mechanism comprises a slag discharge pipe (301), the cross section of the slag discharge pipe (301) is a square hollow structure, the slag discharge pipe (301) is fixedly installed to the two sides of the bottom of the sedimentation tank (101), the slag discharge pipe (301) is connected to the slag discharge port (302) opened in the sedimentation tank (101), and a guide plate (303) is inserted through the side wall of the sedimentation tank (101) located on the side of the slag discharge port (302), the guide plate (303) is an L-shaped structure and is sealed and slidable with the sedimentation tank (101), and the guide plate (303) is connected to the sedimentation tank (101). 3) A connecting plate (304) is fixedly connected to the bottom, and a sealing gasket (305) located below the slag discharge pipe (301) is fixedly connected to the top of the connecting plate (304), and limiting plates (306) with an L-shaped cross-section are fixedly connected to both sides of the connecting plate (304), and the limiting plates (306) are slidably connected to the inside of a notch opened on the outer wall of the slag discharge pipe (301), and the slag discharge pipe (301) is an inclined structure, and the slag discharge pipe (301) is connected to the guide plate (303) via a spring (307).

7. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: A plurality of horizontally distributed mesh frames (401) are provided inside the sedimentation tank (101), and filter screens with gradually increasing mesh sizes are provided in the middle of the plurality of mesh frames (401) from bottom to top. A sealing mechanism is provided on the side wall of the sedimentation tank (101) on one side of the mesh frame (401), and the sealing mechanism comprises a sealing plate (502), the sealing plate (502) is rotatably connected to the side wall of the sedimentation tank (101), the sealing plate (502) is sealedly connected to the side wall of the sedimentation tank (101), and the sealing plate (502) is sealedly fitted to the side end of the mesh frame (401).

8. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: The sweeping mechanism comprises a brush roller (402), the two ends of which are rotatably connected to the sedimentation tank (101) and the inner wall of the side plate (403), respectively; the side plate (403) is an L-shaped structure and is fixedly connected to the side end of the mesh frame (401); there are a plurality of brush rollers (402), the ends of which are fixedly connected to mutually meshing gears (404), one of which is fixedly connected to a worm gear (405); a third motor (406) is fixedly mounted on the top of the side plate (403); the output end of the third motor (406) is fixedly connected to a worm (407), and the worm (407) is meshingly connected to the worm gear (405).

9. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: An electric push rod (503) is fixedly mounted on the top of the housing (501); the telescopic end of the electric push rod (503) passes through the housing (501) and is rotatably connected to one end of a push rod (504); and the other end of the push rod (504) is rotatably connected to a sealing plate (502); a collecting tube (505) with a screw cap is fixedly connected to the bottom of the housing (501); the collecting tube (505) is correspondingly arranged above one side of the push rod (504); the bottom end of the collecting tube (505) is movably sleeved with a movable rod (510); the two ends of the movable rod (510) are respectively fixedly connected to an upper blocking block (511) and a lower blocking block (512); and the lower blocking block (512) is located inside the collecting tube (505).

10. The coagulation impurity filter for treating 2-chloronicotinic acid production wastewater according to claim 1, characterized in that: The pumping mechanism comprises a pump (506), wherein the pump (506) is fixedly connected to a water outlet pipe (507) and a water inlet pipe (508), respectively; the water outlet pipe (507) is located above the top plate (107); the water inlet pipe (508) penetrates the outer shell (501) and extends to the bottom of the outer shell (501); an end pipe (509) is fixedly connected to the bottom of the water inlet pipe (508); the end pipe (509) is distributed correspondingly to the collecting pipe (505); the top diameter of the end pipe (509) is larger than the bottom diameter; the inside of the end pipe (509) is movably sleeved with a movable rod (510); and the upper end of the movable rod (510) is sealed and slidable with the bottom of the end pipe (509).

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