A high-efficiency precipitation device and method for waste rare earth treatment extract

Abstract

The present invention relates to the technical field of precipitation of extracts, and in particular to an efficient precipitation device and method for extracts from waste rare earth treatment. It comprises a precipitation barrel, annular plates are arranged at intervals on the inner wall of the precipitation barrel, the annular plates are used to buffer the extract entering the precipitation barrel, through holes are arranged at intervals on the annular plates, the through holes on two adjacent annular plates are staggered, and an inner cylinder is arranged between the inner sides of the annular plates. The present invention is provided with a guide plate, a diverter plate, an annular plate and a staggered through-hole structure, which can not only divert the newly added extract to avoid all the extracts from flowing to a certain area, thereby reducing the disturbance to the sedimentation layer, but also effectively buffer the impact of the newly added extract on the original liquid in the container through the annular plate, avoiding the destruction of the formed sedimentation layer. At the same time, the introduction of the honeycomb inclined plate divides the flow of a large range of water into multiple small areas, significantly reducing the interference and turbulence of the water flow, thereby improving the sedimentation rate and sedimentation efficiency of the precipitate.

Description

Technical Field

[0001] The present invention relates to the technical field of extract precipitation, and in particular to a high-efficiency precipitation device and method for waste rare earth treatment extract. Background Art

[0002] With the rapid development of modern industry and technology, rare earth elements (REEs) play an indispensable role in electronics, magnetic materials, catalysts, new energy and other fields due to their unique physical and chemical properties. However, the mining and processing of rare earth resources will generate a large amount of waste, including a large amount of rare earth extracts. These extracts not only contain residual rare earth elements, but may also contain a variety of harmful substances, such as heavy metal ions, acid and alkali components and organic solvents. If they cannot be effectively recycled or properly disposed of, they will cause serious pollution to the environment and may lead to the waste of precious resources.

[0003] At present, the recovery and treatment technology for rare earth extracts mainly adopts the static sedimentation method, that is, after mixing the extract with a precipitant, the mixture is injected into a sedimentation container, and then the solid particles in the mixture are gradually settled to the bottom of the container under the action of gravity, thereby achieving solid-liquid separation. However, with the continuous improvement of rare earth resource recovery efficiency and environmental protection requirements, the traditional static sedimentation method has exposed many shortcomings: First, in order to improve equipment utilization, a "batch addition and partial removal" method is usually adopted for continuous operation. That is, when a part of the extract is completed, part of the supernatant is removed and an equal amount of new extract is added. However, since the newly added extract will impact the original liquid in the container, it will destroy the formed sedimentation layer, causing the sediment to re-suspension and reducing the sedimentation effect; secondly, after a long period of sedimentation, the rare earth precipitate will settle at the bottom of the container and form a dense structure, which is not easy to discharge, increasing the difficulty of manual operation. Summary of the Invention

[0004] In view of this, the present invention provides an efficient precipitation device and method for waste rare earth treatment extract, which can solve the shortcomings of the existing rare earth extract, when using the static sedimentation method for precipitation, that the newly added extract will impact the original liquid in the container, causing the precipitate to be re-suspension, reducing the precipitation effect, and the rare earth precipitate will be deposited at the bottom of the container and form a dense structure, which is difficult to discharge.

[0005] The technical solution of the present invention is: an efficient precipitation device for waste rare earth treatment extract, comprising a precipitation barrel, an annular plate is arranged at intervals on the inner wall of the precipitation barrel, the annular plate is used to buffer the extract entering the precipitation barrel, through holes are arranged at intervals on the annular plate, the through holes on two adjacent annular plates are staggered, an inner cylinder is arranged between the inner sides of the annular plates, a honeycomb inclined plate is arranged on the inner side of the inner cylinder, a barrel cover is installed on the top of the precipitation barrel, a guide plate is arranged at intervals on the bottom of the barrel cover, a diverter plate is arranged on the top of the guide plate, the diverter plate is used to divert the extract on the guide plate, and the side of the precipitation barrel is provided with a diverter plate. The surface is connected to a drainage pipe, which passes through the sedimentation barrel and is connected to the inner tube. The bottom of the sedimentation barrel is connected to a discharge pipe. The drainage pipe and the discharge pipe are provided with a control mechanism. The control mechanism is used to control the drainage pipe and the discharge pipe to discharge. The inner tube is provided with a turbidity sensor for detecting the turbidity of the extract. A scraping mechanism is provided at the bottom of the sedimentation barrel. The scraping mechanism is used to scrape the sediment at the bottom of the sedimentation barrel into the discharge pipe. A mixing mechanism is provided on the side of the sedimentation barrel. The mixing mechanism is used to mix the extract with the precipitant and send the mixed extract to the guide plate in the barrel cover.

[0006] Furthermore, the control mechanism includes a first solenoid valve and a second solenoid valve. The first solenoid valve is installed on the drain pipe, and the second solenoid valve is installed on the discharge pipe.

[0007] Furthermore, the scraping mechanism includes a first motor, a first gear, a gear ring, a spiral scraper plate and a connecting rod. The first motor is arranged on the inside of the sedimentation barrel, and the output shaft of the first motor is connected to the first gear. A gear ring is also rotatably arranged on the inside of the sedimentation barrel, and the gear ring is engaged with the first gear. A spiral scraper plate is connected to the gear ring. The spiral scraper plate is used to scrape the sediment at the bottom of the sedimentation barrel into the discharge pipe, and connecting rods are arranged at intervals on the spiral scraper plate.

[0008] Furthermore, the mixing mechanism includes a connecting plate, a controller, a pump, a mixing barrel, an agitator, a connecting pipe and a conveying pipe. A connecting plate is installed on the side of the sedimentation barrel, and a controller, a pump and a mixing barrel are installed on the connecting plate. The agitator is installed on the mixing barrel. The agitator is used to stir the extract and precipitant in the mixing barrel. A connecting pipe is connected between the feed port of the pump and the mixing barrel, and a conveying pipe is connected between the discharge port of the pump and the barrel cover.

[0009] Furthermore, it also includes an elastic clamping plate. The inner wall of the inner tube is provided with an annular groove. The annular groove on the inner tube is provided with an elastic clamping plate. The elastic clamping plate is used to limit the honeycomb inclined plate.

[0010] Furthermore, it also includes a cleaning mechanism, which includes a hollow tube, a movable tube, a water spraying pipe, an electric push rod and a water connecting pipe. The bottom of the guide plate is connected to the hollow tube, the movable tube is slidably connected to the hollow tube, the movable tube is rotatably connected to the water spraying pipe, an electric push rod is installed on the side of the hollow tube, the telescopic rod of the electric push rod is connected to the movable tube, and a water connecting pipe is installed on the barrel cover, and the water connecting pipe is connected to the hollow tube.

[0011] Furthermore, it also includes a rotating mechanism, which includes a second motor, a second gear and a third gear. The second motor is installed on the telescopic rod of the electric push rod, the output shaft of the second motor is connected to the second gear, and the water pipe is connected to the third gear, and the second gear is meshed with the third gear.

[0012] The present invention also provides a method for a waste rare earth treatment extract efficient precipitation device, comprising the following steps: first, adding an appropriate amount of precipitant and extract into a mixing barrel, and stirring and mixing the precipitant and extract in the mixing barrel by a stirrer; then, using a pump to pump the mixed extract from the mixing barrel into the barrel cover, so that the mixed extract falls on the top of the guide plate, and the diverter plate diverts the extract on the top of the guide plate, so that the diverted extract falls into the bottom of the sedimentation barrel through the through hole on the annular plate; then, waiting for the extract in the sedimentation barrel to precipitate, so that the extract forms a clear liquid and a precipitate. The turbidity sensor continuously senses the turbidity of the extract. When the turbidity of the extract sensed by the turbidity sensor is lower than the preset value, the controller will control the first solenoid valve to open and count, so that the clear liquid in the inner cylinder is gradually discharged through the drain pipe, and then the controller will control the first solenoid valve to close; thereafter, when the controller's count reaches a specified value, the controller will control the second solenoid valve to open, so that the sediment accumulated at the bottom of the sedimentation barrel is discharged through the discharge pipe, and the controller will also control the scraping mechanism to scrape the sediment at the bottom of the sedimentation barrel to the discharge pipe, and then the controller will control the second solenoid valve to close and reset the count.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention, by arranging a guide plate, a diverter plate, an annular plate and a staggered through-hole structure, can not only divert the newly added extract to prevent all the extract from flowing to a certain area, thereby reducing the disturbance to the sedimentation layer, but also effectively buffer the impact of the newly added extract on the original liquid in the container through the annular plate, thereby avoiding damage to the formed sedimentation layer. At the same time, the introduction of the honeycomb inclined plate divides the large-scale water flow into multiple small areas, significantly reducing the interference and turbulence of the water flow, thereby improving the sedimentation rate and sedimentation efficiency of the sediment.

[0014] 2. The scraping mechanism of the present invention adopts a spiral scraper plate and a gear ring transmission structure, which can scrape the sediment at the bottom of the sedimentation barrel to the discharge pipe during the discharge process, effectively preventing the sediment from accumulating to form a dense structure and causing discharge difficulties or blockages, thereby improving the stability of the device operation.

[0015] 3. The present invention is equipped with a control mechanism consisting of a turbidity sensor, a controller and a solenoid valve, which realizes automatic sensing and control of the drainage and discharging process. When the turbidity sensor detects that the turbidity of the extract is lower than the preset value, the controller will automatically start the first solenoid valve on the drain pipe to drain the water. After multiple drainages, the controller will control the second solenoid valve to open the discharge according to the counting results, and link the scraping mechanism to clean the material, which greatly improves the automation level and operation efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 This is a structural separation diagram of the sedimentation barrel and barrel cover of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the annular plate, guide plate and diverter plate of the present invention.

[0019] Figure 4 This is a structural separation diagram of the inner tube and the honeycomb inclined plate of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the control mechanism of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraping mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the mixing mechanism of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the agitator of the present invention.

[0024] Figure 9 It is a schematic diagram of the three-dimensional structure of the annular groove and the elastic clamping plate of the present invention.

[0025] Figure 10 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention.

[0026] Figure 11 It is a schematic diagram of the three-dimensional structure of the rotating mechanism of the present invention.

[0027] Parts names and serial numbers in the figure: 1. Sedimentation barrel, 2. Ring plate, 201. Through hole, 3. Inner barrel, 4. Honeycomb inclined plate, 5. Barrel cover, 6. Guide plate, 7. Diverter plate, 8. Drain pipe, 9. Discharge pipe, 1001. First solenoid valve, 1002. Second solenoid valve, 11. Turbidity sensor, 1201. First motor, 1202. First gear, 1203. Gear ring, 1204. Spiral scraper, 12 05. Connecting rod, 1301. Connecting plate, 1302. Controller, 1303. Pump, 1304. Mixing barrel, 1305. Agitator, 1306. Connecting pipe, 1307. Delivery pipe, 14. Annular groove, 15. Elastic clamping plate, 16. Hollow pipe, 17. Movable pipe, 18. Water spray pipe, 19. Electric push rod, 20. Water connecting pipe, 21. Second motor, 22. Second gear, 23. Third gear. DETAILED DESCRIPTION

[0028] Example: A high-efficiency precipitation device and method for waste rare earth treatment extract, see Figures 1-8As shown, it includes a sedimentation barrel 1, the inner bottom of the sedimentation barrel 1 is conical, and the inner bottom of the conical surface is conducive to collecting sediment; it also includes an annular plate 2, an inner cylinder 3, a honeycomb inclined plate 4, a barrel cover 5, a guide plate 6, a diverter plate 7, a drain pipe 8, a discharge pipe 9, a control mechanism, a turbidity sensor 11, a scraping mechanism and a mixing mechanism; five annular plates 2 are arranged at intervals on the inner wall of the sedimentation barrel 1, and the five annular plates 2 are vertically distributed. Through holes 201 are spaced apart on the annular plates 2, and the through holes 201 on the upper and lower adjacent annular plates 2 are staggered so that when the extractant falls from the through holes 201, it can ensure that the extractant is extracted. The liquid falls to contact the annular plate 2, so that the annular plate 2 buffers the extract, thereby reducing the impact of the extract on the original extract in the sedimentation barrel 1; an inner cylinder 3 is arranged between the inner sides of the five annular plates 2; a honeycomb inclined plate 4 is placed at the bottom of the inner cylinder 3, and the honeycomb inclined plate 4 can divide the large-scale water flow into many small areas, which can reduce the water flow interference and turbulence encountered during the sedimentation process of the sediment, making the sediment easier to settle, thereby improving the sedimentation efficiency of the extract; a barrel cover 5 is installed on the top of the sedimentation barrel 1 by bolts. By unscrewing the bolts, the operator can remove the barrel cover 5 from the sedimentation barrel 1, and then can The honeycomb inclined plate 4 is taken out from the inner tube 3 for replacement; a guide plate 6 is provided at the bottom of the barrel cover 5; a diverter plate 7 is provided at intervals on the top of the guide plate 6, and the diverter plate 7 is used to divert the extract on the guide plate 6 so that the diverted extract flows into the top of the annular plate 2. By diverting the extract through the diverter plate 7, the water flow direction can be evenly distributed to avoid all the extract flowing to a certain area, thereby reducing the disturbance of the sedimentation layer; a drain pipe 8 is connected to the upper outer part of the sedimentation barrel 1, and the drain pipe 8 passes through the sedimentation barrel 1 and is connected to the inner tube 3; a discharge pipe 9 is connected to the bottom of the sedimentation barrel 1; a discharge pipe 9 is provided on the drain pipe 8 and the discharge pipe 9. There is a control mechanism, which is used to control the drainage pipe 8 and the discharge pipe 9 for discharge; a turbidity sensor 11 is provided on the side of the inner tube 3, which is used to detect the turbidity of the extract in the inner tube 3, and the turbidity sensor 11 is at the same height as the drainage pipe 8; a scraping mechanism is provided at the bottom of the sedimentation barrel 1, which is used to scrape the sediment at the bottom of the sedimentation barrel 1 into the discharge pipe 9 so that the sediment at the bottom of the sedimentation barrel 1 can be discharged; a mixing mechanism is provided on the side of the sedimentation barrel 1, which is used to mix the extract with the precipitant, and send the mixed extract to the guide plate 6 in the barrel cover 5.

[0029] See Figure 5 As shown, the control mechanism includes a first solenoid valve 1001 and a second solenoid valve 1002 ; the first solenoid valve 1001 is installed on the drain pipe 8 ; and the second solenoid valve 1002 is installed on the discharge pipe 9 .

[0030] See Figure 6As shown, the scraping mechanism includes a first motor 1201, a first gear 1202, a gear ring 1203, a spiral scraper plate 1204 and a connecting rod 1205; the first motor 1201 is provided on the lower side of the inner wall of the sedimentation barrel 1, and the first motor 1201 is a waterproof motor; the output shaft of the first motor 1201 is connected to the first gear 1202; the gear ring 1203 is provided on the lower side of the inner wall of the sedimentation barrel 1, and the gear ring 1203 is located below the first motor 1201. 1203 is engaged with the first gear 1202; a spiral scraper plate 1204 is connected to the bottom of the gear ring 1203, and the spiral scraper plate 1204 is in contact with the bottom of the sedimentation barrel 1. The spiral scraper plate 1204 is used to scrape the sediment at the bottom of the sedimentation barrel 1 into the discharge pipe 9; connecting rods 1205 are arranged at intervals on the spiral scraper plate 1204, and the connecting rods 1205 are used to fix the shape of the spiral scraper plate 1204 to prevent the spiral scraper plate 1204 from being severely deformed after being subjected to force.

[0031] See Figure 7 and Figure 8 As shown, the mixing mechanism includes a connecting plate 1301, a controller 1302, a pump 1303, a mixing barrel 1304, an agitator 1305, a connecting pipe 1306 and a delivery pipe 1307; a connecting plate 1301 is installed on the lower right side of the sedimentation barrel 1; a controller 1302 is installed on the top left side of the connecting plate 1301, and the turbidity sensor 11, the first solenoid valve 1001, the second solenoid valve 1002 and the first motor 1201 are all electrically connected to the controller 1302; a pump 1303 is installed on the top right side of the connecting plate 1301; a mixing barrel 1304 is installed on the right side of the connecting plate 1301, and the mixing barrel There are covers on both the front and back sides of the top of 1304. By removing the covers, the operator can add the precipitant into the mixing barrel 1304. A feeding pipe is provided on the upper right side of the mixing barrel 1304, and the feeding pipe is used to add the extract into the mixing barrel 1304; an agitator 1305 is installed on the upper side of the mixing barrel 1304, and the agitator 1305 is used to stir the extract and the precipitant in the mixing barrel 1304; a connecting pipe 1306 is connected between the feeding port of the pump 1303 and the front lower side of the mixing barrel 1304; a delivery pipe 1307 is connected between the discharge port of the pump 1303 and the middle of the top of the barrel cover 5.

[0032] When in use, first add an appropriate amount of precipitant and extract into the mixing barrel 1304, then start the agitator 1305 to stir the precipitant and extract in the mixing barrel 1304, so that the precipitant and extract are mixed. After the precipitant and extract in the mixing barrel 1304 are completely stirred, turn off the agitator 1305, then start the pump 1303, so that the pump 1303 draws the mixed extract in the mixing barrel 1304 into the inner side of the barrel cover 5 through the connecting pipe 1306 and the delivery pipe 1307, so that the mixed extract falls on the guide plate 6, and then the mixed extract is diverted through the diverter plate 7. After the mixed extract is diverted, the diverter The extracted liquid will separate from the guide plate 6 and fall to the top of the annular plate 2. Then the extracted liquid on the top of the annular plate 2 will fall down through the through hole 201, causing the extracted liquid to fall to the top of the next annular plate 2. This process repeats until the extracted liquid on the top of the lowest annular plate 2 falls down through the through hole 201 to the bottom of the settling tank 1. After that, as the amount of extracted liquid in the settling tank 1 gradually increases, the extracted liquid in the settling tank 1 will gradually enter the inner tube 3 and the honeycomb inclined plate 4 until all the extracted liquid in the mixing tank 1304 is transferred to the settling tank 1 (the liquid level of the extracted liquid will not exceed the top of the settling tank 1). Then, the pump 1303 is turned off. In this way, the extract feeding operation is completed.

[0033] Then wait for the extract in the sedimentation tank 1 to settle. During the sedimentation of the extract, the extract will gradually form a clear liquid and a sediment (the clear liquid is on the top and the sediment is on the bottom). The sediment will gradually accumulate at the bottom of the sedimentation tank 1 under the influence of gravity. The honeycomb inclined plate 4 can divide the large-scale water flow into many small areas through the arrangement of the honeycomb inclined plate 4, thereby reducing the water flow interference and turbulence encountered during the sedimentation process, making it easier for the sediment to settle, thereby improving the sedimentation efficiency of the extract, and at the same time reducing the turbidity. The sensor 11 continuously senses the turbidity of the extract. When the turbidity sensor 11 senses that the turbidity of the extract in the inner tube 3 is lower than a preset value, the turbidity sensor 11 sends a signal. After receiving the signal, the controller 1302 controls the first solenoid valve 1001 to open for a specified time, allowing the clear liquid in the inner tube 3 to gradually drain through the drain pipe 8 until all the clear liquid exceeding the height of the drain pipe 8 is drained. After the specified time, the controller 1302 controls the first solenoid valve 1001 to close and simultaneously counts.

[0034] The above-mentioned extraction liquid feeding operation is then repeated, and the mixed extraction liquid is fed to the guide plate 6 again, so that the diverter plate 7 diverts the mixed extraction liquid on the guide plate 6. The diverter plate 7 diverts the extraction liquid, which can evenly distribute the water flow direction and prevent all the extraction liquid from concentrating on a certain area, thereby reducing the disturbance to the sedimentation layer. When the diverted extraction liquid leaves the guide plate 6 and falls to the top of the annular plate 2, the annular plate 2 will buffer the extraction liquid, thereby reducing the impact force of the extraction liquid on the original extraction liquid in the sedimentation tank 1. In this way, the extraction liquid can be prevented from destroying the formed sedimentation layer when entering the sedimentation tank 1, and the sediment in the sedimentation tank 1 can be prevented from being re-suspended. After the extraction liquid feeding operation is completed, the extraction liquid is allowed to settle in the sedimentation tank 1 again, and this process is repeated. After that, when the count of the controller 1302 reaches a certain value, it means that a large amount of sediment has accumulated at the bottom of the sedimentation tank 1. At this time, the controller 1302 will control the second solenoid valve 1002 to open for a specified time, so that the sediment accumulated at the bottom of the sedimentation barrel 1 is discharged through the discharge pipe 9, and the controller 1302 will also control the first motor 1201 to start for a specified time, so that the first motor 1201 drives the first gear 1202 to rotate, thereby causing the first gear 1202 to drive the gear ring 1203 and the spiral scraper 1204 to rotate (counterclockwise rotation when viewed from top to bottom), and then the spiral scraper 1204 scrapes the sediment at the bottom of the sedimentation barrel 1 to the discharge pipe 9, thereby accelerating the discharge of the sediment and preventing the sediment from forming a blockage at the bottom of the sedimentation barrel 1. After the specified time, the controller 1302 will control the second solenoid valve 1002 and the first motor 1201 to close, and the controller 1302 will also reset the recorded values. In this way, the sediment at the bottom of the sedimentation barrel 1 can be discharged regularly.

[0035] See Figure 9 As shown, it also includes an elastic card plate 15; an annular groove 14 is opened on the inner wall of the inner tube 3, and an elastic card plate 15 is placed in the annular groove 14 on the inner tube 3. The elastic card plate 15 is arc-shaped and is used to limit the honeycomb inclined plate 4.

[0036] By setting the elastic card plate 15, the elastic card plate 15 can be used to limit the honeycomb inclined plate 4, thereby limiting the position of the honeycomb inclined plate 4, thereby preventing the honeycomb inclined plate 4 from moving, and further avoiding the honeycomb inclined plate 4 from affecting the precipitation effect of the extract due to movement; when the operator needs to replace the honeycomb inclined plate 4, the elastic card plate 15 can be removed from the annular groove 14 after the barrel cover 5 is removed, so that the elastic card plate 15 releases the limitation on the honeycomb inclined plate 4, and then the honeycomb inclined plate 4 can be taken out for replacement, and then the new honeycomb inclined plate 4 is put back to its original place, and then the elastic card plate 15 is re-inserted into the annular groove 14, so that the elastic card plate 15 can limit the honeycomb inclined plate 4.

[0037] See Figure 10and Figure 11 As shown, it also includes a cleaning mechanism, which includes a hollow tube 16, a movable tube 17, a water spraying pipe 18, an electric push rod 19 and a water receiving pipe 20; a hollow tube 16 is connected to the middle of the bottom of the guide plate 6; a movable tube 17 is slidably connected to the hollow tube 16; the lower side of the movable tube 17 is rotatably connected to the water spraying pipe 18, and the water spraying pipe 18 is used to spray clean water on the honeycomb inclined plate 4, so as to clean the honeycomb inclined plate 4; an electric push rod 19 is installed on the left side of the hollow tube 16; the telescopic rod of the electric push rod 19 is connected to the movable tube 17; a water receiving pipe 20 is installed on the right side of the barrel cover 5, the right end of the water receiving pipe 20 is on the outside of the barrel cover 5, and the left end of the water receiving pipe 20 passes through the guide plate 6 and is connected to the hollow tube 16.

[0038] See Figure 11 As shown, it also includes a rotating mechanism, which includes a second motor 21, a second gear 22 and a third gear 23; the second motor 21 is installed at the bottom of the telescopic rod of the electric push rod 19, and the second motor 21 is a waterproof motor; the second gear 22 is connected to the output shaft of the second motor 21; the third gear 23 is connected to the water pipe 18, and the second gear 22 is meshed with the third gear 23.

[0039] By setting up a cleaning mechanism and a rotating mechanism, after the sedimentation device is used, the clean water pipe can be connected to the water receiving pipe 20, and then the electric push rod 19 drives the movable pipe 17 and the water spray pipe 18 to move downward, so that the water spray pipe 18 gradually approaches the top of the honeycomb inclined plate 4 until the water spray pipe 18 is at a certain distance from the top of the honeycomb inclined plate 4. Then, the second motor 21 drives the second gear 22 to rotate, so that the second gear 22 drives the third gear 23 and the water spray pipe 18 to rotate, and then the clean water is introduced into the water receiving pipe 20 through the pipe, so that the clean water passes through the water receiving pipe 20, the hollow pipe 16 and the movable pipe. 17 enters the water spray pipe 18, so that the water spray pipe 18 sprays clean water on the honeycomb inclined plate 4, thereby flushing the honeycomb inclined plate 4, and then the second solenoid valve 1002 is controlled to open by the controller 1302, so that the clean water for flushing the honeycomb inclined plate 4 is discharged from the discharge pipe 9. After the honeycomb inclined plate 4 is flushed, the second motor 21 drives the second gear 22 to stop rotating, and then the electric push rod 19 drives the movable pipe 17 and the water spray pipe 18 to move upward and reset, and then the clean water pipeline is disconnected from the water receiving pipe 20. In this way, it is convenient for the operator to flush the honeycomb inclined plate 4 after using the sedimentation device.

Claims

1. An efficient precipitation device for waste rare earth treatment extract, comprising a precipitation tank (1), characterized in that: An annular plate (2) is provided at intervals on the inner wall of the sedimentation barrel (1), and the annular plate (2) is used to buffer the extract entering the sedimentation barrel (1). Through holes (201) are provided at intervals on the annular plate (2), and the through holes (201) on two adjacent annular plates (2) are staggered. An inner cylinder (3) is provided between the inner sides of the annular plates (2), and a honeycomb inclined plate (4) is provided on the inner side of the inner cylinder (3). A barrel cover (5) is installed on the top of the sedimentation barrel (1), and a guide plate (6) is provided at the bottom of the barrel cover (5). A diverter plate (7) is provided at intervals on the top of the guide plate (6), and the diverter plate (7) is used to divert the extract on the guide plate (6). A drainage pipe (8) is connected to the side of the sedimentation barrel (1). A drainage pipe (8) passes through the sedimentation barrel (1) and is connected to the inner barrel (3). A discharge pipe (9) is connected to the bottom of the sedimentation barrel (1). A control mechanism is provided on the drainage pipe (8) and the discharge pipe (9). The control mechanism is used to control the drainage pipe (8) and the discharge pipe (9) to discharge. A turbidity sensor (11) for detecting the turbidity of the extract is provided on the inner barrel (3). A scraping mechanism is provided at the bottom of the sedimentation barrel (1). The scraping mechanism is used to scrape the sediment at the bottom of the sedimentation barrel (1) into the discharge pipe (9). A mixing mechanism is provided on the side of the sedimentation barrel (1). The mixing mechanism is used to mix the extract with the precipitant and send the mixed extract to the guide plate (6) in the barrel cover (5).

2. The efficient precipitation device for waste rare earth treatment extract according to claim 1, characterized in that: The control mechanism comprises a first solenoid valve (1001) and a second solenoid valve (1002). The first solenoid valve (1001) is installed on the drainage pipe (8), and the second solenoid valve (1002) is installed on the discharge pipe (9).

3. The efficient precipitation device for waste rare earth treatment extract according to claim 2, characterized in that: The scraping mechanism comprises a first motor (1201), a first gear (1202), a gear ring (1203), a spiral scraping plate (1204) and a connecting rod (1205). The first motor (1201) is arranged inside the sedimentation barrel (1). The first gear (1202) is connected to the output shaft of the first motor (1201). A gear ring (1203) is also rotatably arranged inside the sedimentation barrel (1). The gear ring (1203) is engaged with the first gear (1202). The gear ring (1203) is connected to the spiral scraping plate (1204). The spiral scraping plate (1204) is used to scrape sediment at the bottom of the sedimentation barrel (1) into the discharge pipe (9). Connecting rods (1205) are arranged at intervals on the spiral scraping plate (1204).

4. The efficient precipitation device for waste rare earth treatment extract according to claim 3, characterized in that: The mixing mechanism comprises a connecting plate (1301), a controller (1302), a pump (1303), a mixing barrel (1304), an agitator (1305), a connecting pipe (1306) and a delivery pipe (1307). The side of the sedimentation barrel (1) is provided with a connecting plate (1301). The controller (1302), the pump (1303) and the mixing barrel (1304) are provided on the connecting plate (1301). The mixing barrel (1304) is provided with an agitator (1305). The agitator (1305) is used to stir the extract and the precipitant in the mixing barrel (1304). A connecting pipe (1306) is connected between the feed port of the pump (1303) and the mixing barrel (1304). A delivery pipe (1307) is connected between the discharge port of the pump (1303) and the barrel cover (5).

5. The efficient precipitation device for waste rare earth treatment extract according to claim 1, characterized in that: It also includes an elastic clamping plate (15), an annular groove (14) is provided on the inner wall of the inner cylinder (3), and an elastic clamping plate (15) is provided in the annular groove (14) on the inner cylinder (3). The elastic clamping plate (15) is used to limit the position of the honeycomb inclined plate (4).

6. The efficient precipitation device for waste rare earth treatment extract according to claim 1, characterized in that: The utility model also includes a cleaning mechanism, which includes a hollow tube (16), a movable tube (17), a water spraying tube (18), an electric push rod (19) and a water receiving tube (20). The bottom of the guide plate (6) is connected to the hollow tube (16), the movable tube (17) is slidably connected to the hollow tube (16), the movable tube (17) is rotatably connected to the water spraying tube (18), the electric push rod (19) is installed on the side of the hollow tube (16), the telescopic rod of the electric push rod (19) is connected to the movable tube (17), and the water receiving tube (20) is installed on the barrel cover (5), and the water receiving tube (20) is connected to the hollow tube (16).

7. The efficient precipitation device for waste rare earth treatment extract according to claim 6, characterized in that: The utility model further comprises a rotating mechanism, which comprises a second motor (21), a second gear (22) and a third gear (23). The second motor (21) is mounted on the telescopic rod of the electric push rod (19), the second gear (22) is connected to the output shaft of the second motor (21), the third gear (23) is connected to the water spray pipe (18), and the second gear (22) is meshed with the third gear (23).

8. A method for using the high-efficiency precipitation device for waste rare earth treatment extract according to claim 4, characterized in that: The method comprises the following steps: first, adding an appropriate amount of precipitant and extract into a mixing barrel (1304), and stirring and mixing the precipitant and extract in the mixing barrel (1304) by a stirrer (1305); then, using a pump (1303) to pump the mixed extract from the mixing barrel (1304) into the barrel cover (5), so that the mixed extract falls on the top of the guide plate (6), and the diverter plate (7) diverts the extract on the top of the guide plate (6), so that the diverted extract falls into the bottom of the sedimentation barrel (1) through the through hole (201) on the annular plate (2); then, waiting for the extract in the sedimentation barrel (1) to precipitate, so that the extract forms a clear liquid and sediment, and the turbidity of the extract is continuously sensed by the turbidity sensor (11), and the turbidity sensor (11) is used to detect the turbidity of the extract. When the sensor (11) senses that the turbidity of the extract is lower than a preset value, the controller (1302) controls the first solenoid valve (1001) to open and count, so that the clear liquid in the inner cylinder (3) is gradually discharged through the drain pipe (8), and then the controller (1302) controls the first solenoid valve (1001) to close; thereafter, after the count of the controller (1302) reaches a specified value, the controller (1302) controls the second solenoid valve (1002) to open, so that the sediment accumulated at the bottom of the sedimentation barrel (1) is discharged through the discharge pipe (9), and the controller (1302) also controls the scraping mechanism to scrape the sediment at the bottom of the sedimentation barrel (1) toward the discharge pipe (9), and then the controller (1302) controls the second solenoid valve (1002) to close and reset the count.

Images