Dichloromethane waste solution recovery device

Abstract

The invention relates to the technical field of waste liquid recovery, and particularly discloses a dichloromethane waste solution recovery device which comprises a raw material tank, and a filtering mechanism is connected to the raw material tank; the filtering mechanism comprises a filtering tank, a driving assembly arranged on the filtering tank, a filtering assembly rotationally arranged in the filtering tank, a collecting assembly arranged at the bottom of the filtering assembly and slag scraping assemblies symmetrically arranged on the two sides of the inner wall of the filtering tank, and scraping plates are arranged on the slag scraping assemblies to scrape impurities on the filtering assembly; the driving assembly comprises a connecting cylinder rotationally connected into the filtering tank, a universal hinging piece connected to the connecting cylinder in a sliding manner and a connecting ball mounted on the universal hinging piece; according to the dichloromethane waste solution recovery device, the effect that impurities on the filter plate can be cleaned and collected while the impurities are filtered can be achieved, filter holes in the filter plate are prevented from being blocked by the impurities in the filtering process, and therefore the waste solution filtering efficiency can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of waste liquid recovery, and particularly relates to a recovery device for dichloromethane waste solution. Background Art

[0002] Dichloromethane, also known as dichloroalkane and methyl chloroform, abbreviated as DCM, is a colorless organic compound with an ether-like pungent odor, and its chemical formula is CH2Cl2. This compound is formed by replacing two hydrogen atoms in methane (CH4) with chlorine atoms. It is slightly soluble in water, soluble in ethanol and ether, and is a non-flammable low-boiling solvent under normal usage conditions. Its vapor forms a weakly combustible mixture only when it becomes highly concentrated in hot air, and it is often used to replace flammable petroleum ether, ether, etc. Dichloromethane solution has good solubility and is widely used in industrial fields such as industrial solvents, intermediates, and coolants. It also has important uses in pharmaceutical preparation, laboratories, and the pharmaceutical industry, and can also be used as a solvent for coatings, paints, inks, etc. It can dissolve various resins, oils, etc., making the coatings and paints more uniform and reducing viscosity, so as to be better coated on the surface of objects. Since waste dichloromethane is highly stable and difficult to degrade, it can persist in the environment for a long time and cause continuous impacts on the ecosystem. Therefore, it is necessary to recover waste dichloromethane solution. The recovery process generally includes impurity removal - cooling adsorption - desorption and condensation - separation and recovery.

[0003] A Chinese patent application document with the publication number CN119771048A discloses a wastewater filtration and treatment device. The wastewater filtration and treatment device includes a filtration box. The top of the filtration box is provided with a liquid inlet pipe, the bottom of the filtration box is provided with a liquid outlet pipe, and the bottom of the filtration box is fixedly connected with a base. A plurality of filter meshes are fixedly connected in the filtration box. A cleaning plate is in contact with the top of the filter mesh. The filtration box is equipped with a flat push mechanism for pushing a plurality of cleaning plates to move. A plurality of cleaning holes adapted to the cleaning plates are opened on the inner wall of the filtration box. A plurality of fixed boxes are fixedly connected to the outer wall of the filtration box, and the number of fixed boxes, cleaning holes, and cleaning plates is the same. An activity seat is slidably arranged in the fixed box, and the end of the activity seat is located in the corresponding cleaning hole. An impurity outlet hole is opened on the bottom inner wall of the fixed box.

[0004] However, the structural design of the above-mentioned related technology: Although it can recover the impurities after filtering the waste liquid, it needs to wait until the filtering is completed before operation. When the filtering amount of the waste solution is large, it is inconvenient to clean the filter mesh in time, and it is easy to be blocked by solid particles, suspended substances, or colloids in the waste solution, resulting in a decrease in the filtering efficiency of the filter mesh and even the inability to continue filtering.

[0005] Therefore, a recovery device for dichloromethane waste solution is proposed to solve the problems mentioned above. Summary of the Invention

[0006] The present invention provides a device for recovering dichloromethane waste solution, aiming to solve the problem that when the filtration amount of the waste solution in the related art is large, it is inconvenient to clean the filter screen in time.

[0007] The dichloromethane waste solution recovery device of the present invention includes a raw material tank, and a filtration mechanism is connected to the raw material tank; The filtration mechanism includes a filtration tank, a driving component arranged on the filtration tank, a filtration component rotatably arranged inside the filtration tank, a collection component arranged at the bottom of the filtration component, and slag scraping components symmetrically arranged on both sides of the inner wall of the filtration tank. The slag scraping components are provided with scraping plates to scrape impurities on the filtration component; The driving component includes a connecting cylinder rotatably connected in the filtration tank, a universal hinge piece slidably connected to the connecting cylinder, and a connecting ball installed on the universal hinge piece; The filtration component includes a filter plate installed on the connecting ball and a baffle plate slidably connected in the filter plate. The filter plate is provided with an opening for discharging impurities, and the baffle plate can open or close the opening; The collection component includes a collection box rotating around the connecting ball and a plugging plate slidably connected in the collection box. The collection box is provided with a groove for the plugging plate to extend out, and convex edges located outside the plugging plate are arranged on both sides of the plugging plate.

[0008] During the process of recovering the waste liquid, the waste liquid in the raw material tank is conveyed to the filtration tank. The waste liquid entering the filtration tank is discharged after being filtered by the filter plate. When the waste liquid is filtered in the filtration tank, the connecting cylinder drives the filter plate to rotate in the filtration tank through the connecting ball on the universal hinge piece. During the rotation of the filter plate, the collection box rotates around the connecting ball, so as to be able to push the filter plate to be inclined, making the top end of the filter plate contact the scraping plate. When the filter plate contacts the scraping plate, the filter plate presses the convex edge on the plugging plate into the collection box, so that the side of the collection box in contact with the filter plate is opened. At the same time, the scraping plate scrapes the impurities filtered by the filter plate. As the filter plate continues to rotate, it can drive the baffle plate to contact the collection box. At this time, the collection box pushes the baffle plate to move to open the opening. At this time, the scraping plate pushes the impurities to fall into the opening and enter the collection box for collection.

[0009] Preferably, the filtration tank includes a tank body and a partition plate. A hemispherical groove is formed in the tank body. The slag scraping components, the filter plate, and the collection box are all located inside the groove. The partition plate is installed in the groove and is slidably connected to the outside of the collection box.

[0010] Preferably, the slag scraping component includes a sector-shaped limiting plate, the limiting plate is inclined and installed on the inner wall of the groove, and the scraping plate is installed at the bottom of the limiting plate.

[0011] Preferably, the universal hinge includes a first universal hinge shaft, a second universal hinge shaft, and a third universal hinge shaft. The top end of the first universal hinge shaft is slidably connected in the connecting cylinder. A chute is provided on the first universal hinge shaft, and a limiting strip adapted to the chute is installed on the inner wall of the connecting cylinder. The two ends of the second universal hinge shaft are respectively hinged to the bottom end of the first universal hinge shaft and the top end of the third universal hinge shaft. The connecting ball is installed at the bottom end of the third universal hinge shaft.

[0012] Through the cooperative setting of the chute and the limiting strip, the first universal hinge shaft can slide in the connecting cylinder to ensure that the filter plate can be inclined.

[0013] Preferably, the filter assembly further includes a storage groove communicating with the opening and a limiting rod slidably connected to the baffle. The baffle is slidably connected in the storage groove. A first spring is installed between the inner wall of the storage groove and the baffle. A limiting groove for the limiting rod to move upward is provided on the inner top wall of the storage groove.

[0014] During the rotation of the filter plate, the limiting rod can contact the collection box. At this time, through the block of the collection box, the baffle can be pushed to move, thereby opening the opening. When the limiting groove corresponds to the limiting rod, as the filter plate rotates, the collection box can push the limiting rod into the limiting groove. At this time, the first spring pushes the baffle to reset, thereby closing the opening.

[0015] Preferably, the baffle and the opening are in a fan shape, and the filter plate and the baffle are concentrically arranged. The baffle has holes for the waste liquid to pass through. The opening at the bottom end of the filter plate is larger than the opening at the top end of the filter plate.

[0016] Preferably, the collection box is in a fan shape and its inner side is in contact with the outer side of the connecting ball. Connecting plates are installed on both sides of the blocking plate. Second springs are installed on both sides of the connecting plates. The two second springs are respectively connected to both sides of the inner wall of the collection box.

[0017] When one side of the blocking plate is squeezed by the filter plate, the convex rib on one side of the blocking plate enters the collection box to open the collection box. When the blocking plate is separated from the filter plate, the second spring drives the blocking plate to reset through the connecting plate.

[0018] Preferably, the filtering mechanism further includes an adjusting component. The adjusting component is arranged outside the collection box to adjust the angle of the collection box.

[0019] The adjusting component can drive the collection box to rotate around the connecting ball, thereby adjusting the angle of the filter plate.

[0020] Preferably, the adjusting component includes a telescopic rod slidably connected in the tank body and a hinged arm hinged to the top end of the telescopic rod. One end of the hinged arm is installed on the outside of the collection box.

[0021] During the movement of the telescopic rod, it can drive the articulated arm to move, and the articulated arm can drive the collection box to rotate around the connecting ball, thereby pushing the filter plate to tilt.

[0022] Preferably, accommodation grooves for accommodating the telescopic rod are provided on both sides of the inner wall of the tank body, and a groove for the articulated arm to move is provided on the partition plate.

[0023] When the telescopic rod moves to the limit position, it can be received by the accommodation groove. At the same time, the convex ridge on the blocking plate is pressed into the collection box by the filter plate. During the movement of the telescopic rod, the articulated arm slides in the groove on the partition plate.

[0024] With the above technical solution, the beneficial effect of the present invention is that during filtration, the connecting cylinder drives the filter plate to rotate in the filter tank through the connecting ball on the universal hinge. During the rotation of the filter plate, the collection box rotates around the connecting ball, thereby being able to push the filter plate to tilt, so that the top end of the filter plate contacts the scraper. When the filter plate contacts the scraper, the filter plate presses the convex ridge on the blocking plate into the collection box, opening the side of the collection box in contact with the filter plate. At the same time, the scraper scrapes off the impurities filtered by the filter plate. As the filter plate continues to rotate, it can drive the baffle to contact the collection box. At this time, the collection box pushes the baffle to move to open the opening. At this time, the scraper pushes the impurities to fall into the opening and enter the collection box for collection. It can achieve the effect of filtering impurities while cleaning and collecting the impurities on the filter plate, avoiding the blockage of the filter holes on the filter plate by impurities during the filtration process, and thus being able to ensure the filtration efficiency of the waste liquid. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment in the present invention.

[0026] Figure 2 It is a schematic diagram of the structure of the filtration mechanism of a specific embodiment in the present invention.

[0027] Figure 3 It is a schematic diagram of the internal structure of the tank body of a specific embodiment in the present invention.

[0028] Figure 4 It is a schematic diagram of the structure of the drive assembly of a specific embodiment in the present invention.

[0029] Figure 5 It is a partial sectional view structure diagram of the connecting cylinder and the first universal hinge shaft of a specific embodiment in the present invention.

[0030] Figure 6 It is a schematic diagram of the structure of the filter plate of a specific embodiment in the present invention.

[0031] Figure 7 It is a schematic diagram of the structure of the limiting groove of a specific embodiment in the present invention.

[0032] Figure 8 The structural schematic diagram of the baffle plate in the specific embodiment of the present invention.

[0033] Figure 9 The internal structural schematic diagram of the collection box in the specific embodiment of the present invention.

[0034] Reference numerals: 10, raw material tank; 20, filtering mechanism; 21, filtering tank; 211, tank body; 212, groove; 213, partition plate; 214, receiving groove; 22, slag scraping assembly; 221, limiting plate; 222, scraping plate; 23, driving assembly; 231, cover plate; 232, motor; 233, connecting cylinder; 234, limiting strip; 235, universal hinge shaft one; 236, chute; 237, universal hinge shaft two; 238, universal hinge shaft three; 239, connecting ball; 24, filtering component; 241, filter plate; 242, storage groove; 243, baffle plate; 244, spring one; 245, limiting rod; 246, limiting groove; 247, opening; 25, collecting component; 251, collection box; 252, sealing plate; 253, connecting plate; 254, spring two; 26, adjusting component; 261, hydraulic cylinder; 262, telescopic rod; 263, articulated arm; 30, rectifier; 40, evaporator; 50, condenser; 60, frame body. Specific embodiments

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0036] As Figures 1 to 9 shown, the dichloromethane waste solution recovery device of the present invention includes a raw material tank 10, a filtering mechanism 20, a rectifier 30, an evaporator 40, a condenser 50 and a frame body 60. The raw material tank 10 is arranged on one side of the frame body 60. The filtering mechanism 20 is arranged on the frame body 60 and is connected to the raw material tank 10 through a pipeline. The rectifier 30 is located on one side of the filtering mechanism 20 and is connected to the filtering mechanism 20 through a pipeline. The evaporator 40 is installed on the inner bottom wall of the frame body 60 and is connected to the rectifier 30. The condenser 50 is installed on the top of the frame body 60 and is connected to the top of the rectifier 30 through a pipeline.

[0037] The dichloromethane waste solution in the raw material tank 10 enters the filtering mechanism 20 through a pipeline for filtering operations. The filtered dichloromethane waste solution then enters the rectifier 30 for separation processing. The separated dichloromethane waste solution then enters the evaporator 40 through a pipeline for evaporation operations. The evaporated steam enters the rectifier 30 again and enters the condenser 50 together with the gas in the rectifier 30 for condensation to achieve effective recovery of the dichloromethane liquid.

[0038] As Figures 1 to 3 shown, the filtering mechanism 20 includes a filtering tank 21, a slag scraping assembly 22, a driving assembly 23, a filtering assembly 24, a collection assembly 25, and an adjustment assembly 26.

[0039] The filtering tank 21 is installed on the frame 60, and the filtering tank 21 is connected to the bottom of one side of the rectifier 30 through a pipeline. The number of the slag scraping assemblies 22 is two, and the two slag scraping assemblies 22 are symmetrically installed on both sides of the inner wall of the filtering tank 21 along the axis of the filtering tank 21, and the two slag scraping assemblies 22 are both inclined. The driving assembly 23 is installed on the top of the filtering tank 21, and the filtering assembly 24 is rotatably connected inside the filtering tank 21 and is connected to the driving assembly 23. The collection assembly 25 is arranged at the bottom of the filtering assembly 24 to collect the filter residue on the filtering assembly 24. The adjustment assembly 26 is installed outside the collection assembly 25 to drive the collection assembly 25 to move for adjusting the inclination angle of the filtering assembly 24.

[0040] When filtering the dichloromethane waste solution, the dichloromethane waste solution enters the filtering tank 21 through a pipeline, and then the dichloromethane waste solution is discharged from the filtering tank 21 after being filtered by the filtering assembly 24. During the process of filtering the dichloromethane waste solution by the filtering assembly 24, the driving assembly 23 drives the filtering assembly 24 to rotate in the filtering tank 21. During the rotation of the filtering assembly 24, the impurities on the filtering assembly 24 are scraped off by the slag scraping assembly 22, and the scraped impurities pass through the filtering assembly 24 and enter the collection assembly 25 for collection, so as to achieve the effect of cleaning and collecting impurities during the process of filtering the dichloromethane waste solution.

[0041] As Figures 2 to 3 shown, the filtering tank 21 includes a tank body 211 and a partition plate 213. A hemispherical groove 212 is formed inside the tank body 211, and the slag scraping assembly 22, the filtering assembly 24, and the collection assembly 25 are all located inside the groove 212. The partition plate 213 is installed in the groove 212 and is slidably connected to the outside of the collection assembly 25 to provide support for the collection assembly 25. Accommodating grooves 214 are formed at the bottoms of both sides of the inner wall of the tank body 211.

[0042] The hemispherical groove 212 on the tank body 211 can provide space for the rotation of the filtering component 24, preventing the filtering component 24 from being blocked and unable to rotate, thus ensuring the stability of the device during operation.

[0043] As Figures 3 to 4 shown, the slag scraping component 22 includes a limit plate 221 and a scraping plate 222. The limit plate 221 is in a fan shape. The outer side of the limit plate 221 is installed on the inner wall of the groove 212, and the limit plate 221 is inclined in the groove 212. When the scraping plate 222 contacts the filtering component 24, the scraping plate 222 and the filtering component 24 are coaxial. The scraping plate 222 is installed at the bottom of the limit plate 221, and the scraping plate 222 faces the center of the limit plate 221.

[0044] During the rotation of the filtering component 24, the filtering component 24 can contact the scraping plate 222. When the filtering component 24 contacts the scraping plate 222, relative sliding will occur between the surface of the filtering component 24 and the scraping plate 222. At this time, the scraping plate 222 can scrape off the impurities filtered out by the filtering component 24 during the filtering process, preventing the impurities from accumulating on the surface of the filtering component 24 and then blocking the pores of the filtering component 24, affecting its filtering effect, and enabling the filtering component 24 to always maintain an unobstructed filtering channel, making the filtering component 24 more efficient in filtering work, greatly improving its filtering efficiency, and ensuring the smooth progress of the entire filtering process.

[0045] As Figures 2 to 5 shown, the driving component 23 includes a cover plate 231, a motor 232, a connecting cylinder 233, a limit strip 234, a universal hinge and a connecting ball 239.

[0046] The bottom end of the cover plate 231 is installed on the top end of the tank body 211, and the bottom end of the motor 232 is installed on the top end of the cover plate 231. The top end of the connecting cylinder 233 is rotatably connected to the bottom end of the cover plate 231 and is connected to the output shaft of the motor 232. The limit strip 234 is installed on the inner wall of the connecting cylinder 233. The top end of the universal hinge is slidably arranged on the connecting cylinder 233, and the connecting ball 239 is arranged at the bottom end of the universal hinge.

[0047] The universal hinge includes a universal hinge shaft one 235, a universal hinge shaft two 237 and a universal hinge shaft three 238. The top end of the universal hinge shaft one 235 is slidably connected inside the connecting cylinder 233. A chute 236 is opened on the outer side of the top end of the universal hinge shaft one 235, and the limit strip 234 is slidably connected inside the chute 236. The top end of the universal hinge shaft two 237 is hinged to the bottom end of the universal hinge shaft one 235. The top end of the universal hinge shaft three 238 is hinged to the bottom end of the universal hinge shaft two 237. The connecting ball 239 is installed at the bottom end of the universal hinge shaft three 238, and the connecting ball 239 is located at the center of the filtering component 24.

[0048] During the process of filtering the dichloromethane waste solution, the motor 232 drives the connecting cylinder 233 to rotate on the cover plate 231. As the connecting cylinder 233 rotates, the limiting strip 234 arranged inside it drives the universal hinge shaft one 235 to rotate. At the same time, the universal hinge shaft one 235 drives the universal hinge shaft two 237 to rotate accordingly, and the universal hinge shaft two 237 drives the universal hinge shaft three 238 to rotate during the rotation process. The universal hinge shaft three 238 drives the connecting ball 239 to rotate, and at this time the connecting ball 239 drives the filter assembly 24 to rotate. During the rotation of the filter assembly 24, the scraper 222 scrapes off the impurities accumulated on the filter assembly 24 to ensure that the filter assembly 24 can continuously and efficiently perform the filtering work.

[0049] As Figures 3 to 4 and Figures 6 to 8 shown, the filter assembly 24 includes a filter plate 241, a receiving groove 242, a baffle 243, a first spring 244 and a limiting rod 245. The filter plate 241 is installed on the outside of the connecting ball 239. Fan-shaped openings 247 are provided at both the top and bottom ends of the filter plate 241. The opening 247 at the bottom end of the filter plate 241 is larger than the opening 247 at the top end of the filter plate 241. Impurities can pass through the opening 247 through the filter plate 241 and enter the collection assembly 25. The receiving groove 242 is opened inside the filter plate 241 and is communicated with the opening 247. The baffle 243 is fan-shaped and matches the shape of the opening 247, and the baffle 243 is slidably connected inside the receiving groove 242. The baffle 243 has holes to enable the filtered dichloromethane waste solution to pass through the filter plate 241.

[0050] In the initial state, the baffle 243 is located inside the opening 247, so that the opening 247 can be closed in the initial state. On the one hand, the baffle 243 can prevent the impurities on the filter plate 241 from directly passing through the opening 247 in the initial state, avoiding the mixing of impurities into the already filtered dichloromethane waste solution; on the other hand, the baffle 243 can also ensure that the initial stage of the filtering process will not affect the filtering quality due to the direct exposure of the opening 247, thus ensuring the stability and efficiency of the entire filtering process.

[0051] There are two first springs 244, and both of the two first springs 244 are installed between the inner wall of the receiving groove 242 and the baffle 243. The limiting rod 245 is slidably connected to the top edge position of the baffle 243. A through hole for the limiting rod 245 to slide up and down is provided on the baffle 243. Arc-shaped surfaces are provided at both the top and bottom ends of the limiting rod 245, and a limiting groove 246 for the limiting rod 245 to move up is provided on the inner top wall of the receiving groove 242.

[0052] During the rotation of the connecting ball 239, it can drive the filter plate 241 to rotate in the tank body 211. At the same time, the filter plate 241 drives the baffle plate 243 and the limiting rod 245 to rotate synchronously. When the limiting rod 245 contacts the collection assembly 25, under the limitation of the collection assembly 25, it can block the continuous rotation of the limiting rod 245 following the filter plate 241. At this time, with the continuous rotation of the filter plate 241, it can drive the baffle plate 243 into the storage groove 242 to open the opening 247. When the opening 247 is opened, the impurities scraped by the scraper 222 can enter the collection assembly 25 through the opening 247 for collection.

[0053] During the process of collecting impurities, the filter plate 241 continues to rotate. When the limiting groove 246 corresponds to the limiting rod 245, the limiting groove 246 provides an upward movement space for the limiting rod 245. At this time, the collection assembly 25 pushes the limiting rod 245 upward, so that the limiting rod 245 enters the limiting groove 246. When the limiting rod 245 separates from the collection assembly 25, the limiting rod 245 resets. At this time, the first spring 244 drives the baffle plate 243 to reset to close the opening 247.

[0054] As Figures 3 to 4 and Figure 9 As shown, the collection assembly 25 includes a collection box 251, a sealing plate 252 and an elastic member. The shape of the collection box 251 is fan-shaped. The inner side of the collection box 251 is in contact with the outer side of the connecting ball 239, and the collection box 251 can rotate around the connecting ball 239.

[0055] The adjustment assembly 26 can drive the collection box 251 to rotate around the connecting ball 239. When the collection box 251 rotates, it can push the filter plate 241 to move towards one of the scrapers 222 until the filter plate 241 contacts the scraper 222, so that the filter plate 241 is inclined. Since the filter plate 241 is in an inclined state, when the dichloromethane waste solution falls on the filter plate 241, it will flow along the inclined direction of the filter plate 241 and thoroughly wash the surface of the filter plate 241. In this way, the impurities attached to the surface of the filter plate 241 can be removed, thereby further improving the cleaning effect of the filter plate 241.

[0056] The sealing plate 252 is slidably connected inside the collection box 251. Both sides of the collection box 251 have grooves for the sealing plate 252 to extend out. Both sides of the sealing plate 252 have convex ribs, and the convex ribs on the sealing plate 252 are all located outside the collection box 251.

[0057] In the initial state, the plugging plate 252 plugs both sides of the collection box 251, making both sides of the collection box 251 in a closed state, which can prevent external dichloromethane waste solution from entering the collection box 251 or impurities inside the collection box 251 from moving out. When the collection box 251 pushes the filter plate 241 to tilt to the limit position, one convex edge of the plugging plate 252 can be flush with one side of the collection box 251, so that one side of the collection box 251 is in an open state. At the same time, the other side of the plugging plate 252 extends out of the collection box 251, so that the other side of the plugging plate 252 is still in a plugged state. When the opening 247 on the filter plate 241 is opened and corresponds to the collection box 251, impurities can enter the collection box 251 along the gap between the collection box 251 and the convex edge for collection.

[0058] There are two elastic members, and the two elastic members are respectively arranged on both sides of the plugging plate 252. The elastic member includes a connecting plate 253 and a second spring 254. The connecting plates 253 in the two elastic members are respectively installed on both sides of the plugging plate 252. There are two second springs 254. One ends of the two second springs 254 are respectively installed on both sides of the connecting plate 253, and the other ends of the two second springs 254 are respectively installed on both sides of the inner wall of the collection box 251.

[0059] When the plugging plate 252 contacts the filter plate 241, a mutual acting force is generated between the two. At this time, the filter plate 241 exerts a squeezing force on the plugging plate 252, thereby pushing the plugging plate 252 to slide in the collection box 251, so that the convex edge of the plugging plate 252 in contact with the filter plate 241 enters the collection box 251, thus opening the collection box 251. At the same time, the second spring 254 on one side of the connecting plate 253 is compressed, and the second spring 254 on the other side of the connecting plate 253 is stretched. When the filter plate 241 gradually separates from the plugging plate 252, the two second springs 254 on the connecting plate 253 start to gradually reset, thereby driving the plugging plate 252 to gradually reset to close the collection box 251. At this time, the plugging plate 252 can block the entry and exit of substances inside and outside the collection box 251 again.

[0060] Continue to refer to Figures 3 to 4 and Figure 9 As shown, the adjusting assembly 26 includes a hydraulic cylinder 261, a telescopic rod 262 and a hinged arm 263. The hydraulic cylinder 261 is installed on one side of the tank body 211, and the telescopic end of the hydraulic cylinder 261 penetrates one side of the tank body 211 and extends into the interior of the tank body 211. The telescopic rod 262 is installed at the movable end of the hydraulic cylinder 261. The accommodating groove 214 can accommodate the telescopic rod 262, and the telescopic rod 262 has elasticity. One end of the hinged arm 263 is hinged to the top of the telescopic rod 262, and the other end of the hinged arm 263 is installed on the outside of the collection box 251. A groove for the hinged arm 263 to move is opened on the partition plate 213.

[0061] The hydraulic cylinder 261 can drive the telescopic rod 262 to reciprocate inside the tank body 211 through its telescopic end. During the movement of the telescopic rod 262, the articulated arm 263 drives the collection box 251 to reciprocally rotate around the outside of the connecting ball 239. During the rotation of the collection box 251, it can push the filter plate 241 to reciprocally tilt, so that the dichloromethane waste solution can continuously wash the impurities on the filter plate 241. During the process of the filter plate 241 reciprocally tilting, the connecting ball 239 drives the universal hinge shaft one 235 to slide up and down in the connecting cylinder 233 through the universal hinge shaft two 237 on the universal hinge shaft three 238, and at the same time the telescopic rod 262 reciprocates telescopically.

[0062] Working principle: When recovering the dichloromethane waste solution, first transport the dichloromethane waste solution in the raw material tank 10 to the tank body 211 through a pipeline. The dichloromethane waste solution entering the tank body 211 is filtered by the filter plate 241 and then discharged from the tank body 211. The separated dichloromethane waste solution then enters the evaporator 40 through a pipeline for evaporation operation. The evaporated steam enters the rectifier 30 again and enters the condenser 50 together with the gas in the rectifier 30 for condensation to recover the dichloromethane liquid.

[0063] During the process of the filter plate 241 filtering the dichloromethane waste solution, the motor 232 drives the connecting cylinder 233 to rotate. The connecting cylinder 233 drives the universal hinge shaft one 235 to rotate through the limiting strip 234. The universal hinge shaft one 235 drives the connecting ball 239 to rotate through the universal hinge shaft three 238 on the universal hinge shaft two 237. At this time, the connecting ball 239 drives the filter plate 241 to rotate in the tank body 211.

[0064] During the rotation of the filter plate 241, the hydraulic cylinder 261 drives the telescopic rod 262 to reciprocate inside the tank body 211. During the movement of the telescopic rod 262, the articulated arm 263 drives the collection box 251 to reciprocally rotate around the connecting ball 239. During the reciprocal rotation of the collection box 251, the collection box 251 can push the filter plate 241 to reciprocally tilt, so that the dichloromethane waste solution can continuously wash the impurities on the filter plate 241 and prevent the impurities from accumulating concentratedly on the filter plate 241.

[0065] Whenever the filter plate 241 starts to tilt, the telescopic rod 262 moves towards the receiving groove 214. At the same time, the scraper 222 can contact the filter plate 241. Then, under the limitation of the scraper 222, it can block the filter plate 241 from continuing to tilt. At this time, the scraper 222 starts to scrape the impurities on the filter plate 241. As the collection box 251 continues to rotate, the filter plate 241 pushes the plugging plate 252 into the collection box 251, so that the side of the collection box 251 in contact with the filter plate 241 is in an open state. At this time, the telescopic rod 262 enters the receiving groove 214.

[0066] When the side of the collection box 251 in contact with the filter plate 241 is opened, as the filter plate 241 rotates, it can drive the limit rod 245 to contact one side of the collection box 251. At this time, under the limitation of the collection box 251, the rotation of the limit rod 245 following the filter plate 241 can be blocked. As the filter plate 241 continues to rotate, the filter plate 241 can drive the baffle plate 243 into the storage groove 242, thereby opening the opening 247. When the opening 247 is opened, the filter plate 241 drives the opening 247 to correspond to the collection box 251. Then the scraper 222 pushes the scraped impurities into the opening 247, and the impurities entering the opening 247 can pass through the opening 247 and enter the collection box 251 for collection, so as to achieve the effect of filtering impurities while cleaning and collecting the impurities on the filter plate 241, so as to avoid clogging the filter holes on the filter plate 241 during the filtering process, thereby ensuring the filtering efficiency of the dichloromethane waste solution.

[0067] When the limit groove 246 on the filter plate 241 corresponds to the limit rod 245, through the rotation of the filter plate 241 and the block of the collection box 251, the limit rod 245 can be pushed upward, so that the limit rod 245 enters the limit groove 246. When the limit rod 245 moves out of the range of the collection box 251, the limit rod 245 moves downward and resets. At this time, the first spring 244 drives the baffle plate 243 into the opening 247 to close the opening 247.

[0068] After the impurities on the filter plate 241 are collected, the hydraulic cylinder 261 drives the telescopic rod 262 to reset, so that the collection box 251 is separated from the filter plate 241. At this time, the two second springs 254 on the connecting plate 253 reset, so that the blocking plate 252 resets, thereby closing the collection box 251.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A dichloromethane waste solution recovery device, including a raw material tank (10), characterized in that, A filtering mechanism (20) is connected to the raw material tank (10); The filtering mechanism (20) includes a filtering tank (21), a driving component (23) arranged on the filtering tank (21), a filtering component (24) rotatably arranged inside the filtering tank (21), a collecting component (25) arranged at the bottom of the filtering component (24), and slag scraping components (22) symmetrically arranged on both sides of the inner wall of the filtering tank (21). The slag scraping components (22) are provided with scraping plates (222) to scrape impurities on the filtering component (24); The driving component (23) includes a connecting cylinder (233) rotatably connected in the filtering tank (21), a universal hinge connected to the connecting cylinder (233) in a sliding manner, and a connecting ball (239) installed on the universal hinge; The filtering component (24) includes a filtering plate (241) installed on the connecting ball (239) and a baffle (243) slidably connected in the filtering plate (241). An opening (247) for discharging impurities is provided on the filtering plate (241), and the baffle (243) can open or close the opening (247); The collecting component (25) includes a collecting box (251) rotating around the connecting ball (239) and a blocking plate (252) slidably connected in the collecting box (251). The collecting box (251) is provided with a groove for the blocking plate (252) to extend out. Both sides of the blocking plate (252) are provided with convex edges located outside the blocking plate (252).

2. The dichloromethane waste solution recovery device according to claim 1, wherein The filtering tank (21) includes a tank body (211) and a partition plate (213). A hemispherical groove (212) is formed in the tank body (211). The slag scraping components (22), the filtering plate (241), and the collecting box (251) are all located inside the groove (212). The partition plate (213) is installed in the groove (212) and is slidably connected to the outside of the collecting box (251).

3. The dichloromethane waste solution recovery device according to claim 2, characterized in that, The slag scraping component (22) includes a fan-shaped limiting plate (221). The limiting plate (221) is inclined and installed on the inner wall of the groove (212), and the scraping plate (222) is installed at the bottom of the limiting plate (221).

4. The dichloromethane waste solution recovery device according to claim 1, wherein, The universal hinge includes a first universal hinge shaft (235), a second universal hinge shaft (237), and a third universal hinge shaft (238). The top end of the first universal hinge shaft (235) is slidably connected in the connecting cylinder (233). A chute (236) is formed on the first universal hinge shaft (235). A limiting strip (234) adapted to the chute (236) is installed on the inner wall of the connecting cylinder (233). The two ends of the second universal hinge shaft (237) are respectively hinged to the bottom end of the first universal hinge shaft (235) and the top end of the third universal hinge shaft (238). The connecting ball (239) is installed at the bottom end of the third universal hinge shaft (238).

5. The dichloromethane waste solution recovery device according to claim 1, wherein The filtering component (24) further includes a storage groove (242) communicating with the opening (247) and a limiting rod (245) slidably connected to the baffle (243). The baffle (243) is slidably connected in the storage groove (242). A first spring (244) is installed between the inner wall of the storage groove (242) and the baffle (243). A limiting groove (246) for the upward movement of the limiting rod (245) is formed in the inner top wall of the storage groove (242).

6. The dichloromethane waste solution recovery device according to any one of claims 1-5, characterized in that, The baffle (243) and the opening (247) are in a fan shape, and the filter plate (241) is concentric with the baffle (243). The baffle (243) has holes for the waste liquid to pass through. The opening (247) at the bottom end of the filter plate (241) is larger than the opening (247) at the top end of the filter plate (241).

7. The dichloromethane waste solution recovery device according to claim 1, wherein, The collection box (251) is in a fan shape and its inner side is in contact with the outer side of the connecting ball (239). Connecting plates (253) are installed on both sides of the sealing plate (252). Second springs (254) are installed on both sides of the connecting plates (253). The two second springs (254) are respectively connected to the two sides of the inner wall of the collection box (251).

8. The dichloromethane waste solution recovery device according to claim 2, characterized in that, The filtering mechanism (20) further includes an adjusting component (26). The adjusting component (26) is arranged outside the collection box (251) to adjust the angle of the collection box (251).

9. The dichloromethane waste solution recovery device according to claim 8, characterized in that, The adjusting component (26) includes a telescopic rod (262) slidably connected in the tank body (211) and a hinged arm (263) hinged to the top end of the telescopic rod (262). One end of the hinged arm (263) is installed on the outside of the collection box (251).

10. The dichloromethane waste solution recovery device according to claim 9, characterized in that, Receiving grooves (214) for accommodating the telescopic rod (262) are formed on both sides of the inner wall of the tank body (211). A groove for the movement of the hinged arm (263) is formed in the partition plate (213).

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