Mixing, clarifying and extracting tank for rare earth separation

Abstract

The invention belongs to the technical field of rare earth preparation, and particularly relates to a mixing, clarifying and extracting tank for rare earth separation, the mixing, clarifying and extracting tank comprises a support, a top cover and a mixing chamber, the top cover is jointly mounted between a horizontal section and a vertical section above the support, the mixing chamber is mounted on the front side of the lower end of the support, and meanwhile, the mixing, clarifying and extracting tank is provided with a moving mechanism, a stirring mechanism and a tidying mechanism; a first fan blade and a second fan blade conduct graded stirring and preliminary shearing on a mixed phase in the mixing chamber, meanwhile, an arc-shaped cutting plate is matched with fins to conduct further shearing and crushing on the mixed phase, the contact area between phases is increased, mixed mass transfer between the phases is facilitated, and the mixing efficiency is improved. And then the residual extraction machine on the inner wall of the mixing chamber is scraped and cleaned through a rotating plate, a telescopic scraping plate, a trapezoidal scraping plate and a telescopic cleaning plate, the method has important significance on maintaining the pH environment for rare earth preparation, and then the rare earth preparation efficiency and purity are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rare earth preparation, and in particular relates to a mixed clarification extraction tank for rare earth separation. Background Art

[0002] The mixing and clarifying extraction tank is a step-by-step contact extraction equipment that achieves two-phase separation by gravity. It is mainly composed of a mixing chamber and a clarifying chamber. That is, the raw liquid and the extractant enter the mixing chamber from different feed ports, and then are mixed and transferred by the agitator, and enter the clarifying chamber through the overflow baffle. Then, static separation is achieved by gravity, and finally the extraction is completed through different liquid phase outlets. However, the existing mixed clarification extraction tank for rare earth separation has the following problems: First, when producing and preparing rare earths, companies usually add extractants with different pH values ​​to the raw material mixture according to the characteristics of the rare earths to be prepared, and then use a conventional agitator to stir the mixed liquid phase for a specified time to achieve mass transfer between different phases. However, the traditional mixing and settling tank itself does not have a temperature balance device, and the temperature directly affects the fluidity between different liquid phases. At the same time, the extractant still has a certain viscosity after dilution. Based on the above situation, the conventional agitator cannot perfectly and effectively shear the mixed phase, thereby affecting the mass transfer effect between different phases, causing abnormal phase continuity, which is not conducive to the efficient preparation of rare earths; Secondly, the mixed clarification extraction tank is a multi-stage series extraction equipment, which has the disadvantages of large footprint and difficult cleaning. At the same time, the preparation of different rare earths requires the addition of extractants with different pH values, and the different pH extractants will remain on the inner walls of the mixing chamber and the clarification chamber, making it impossible to accurately control the pH environment during rare earth preparation. At the same time, different pH extractants will adhere to the inner walls of the mixing chamber and the clarification chamber for a long time, which will corrode the rare earth preparation containers, thereby increasing enterprise costs and affecting the accuracy of rare earth preparation to a certain extent. Summary of the invention

[0003] In order to achieve the above object, the present invention adopts the following technical scheme: a mixed clarification extraction tank for rare earth separation, comprising a mixing chamber, a bracket is provided at the rear end of the mixing chamber, and a top cover is installed between the upper horizontal section and the vertical section of the bracket; A stirring roller is installed in the middle of the top cover through a built-in driving motor to drive the stirring mechanism; A fan blade No. 1 is installed at the lower end of the stirring roller, and is 20 cm away from the bottom wall of the mixing chamber; a fan blade No. 2 is installed in the middle of the stirring roller, and is 60 cm away from the fan blade No. 1, and the size of the fan blade No. 2 is smaller than that of the fan blade No. 1; The first and second blades are evenly distributed with embedded arc-shaped cutting plates, and the model, thickness and installation angle of the arc-shaped cutting plate on the first blade are larger than those on the second blade, so as to fully crush the mixed light and heavy phase liquids; fins are evenly distributed in the middle of the outer wall of each arc-shaped cutting plate, and a heat transfer pipe is installed on the upper outer wall of the arc-shaped cutting plate, and its shape is exactly the same as that of the arc-shaped cutting plate; A heat exchanger is built inside the stirring roller, which is connected to the outside through a connecting pipe and is also connected to the arc-shaped cutting plate and the heat transfer pipe to improve the temperature of the light and heavy phase liquids inside the mixing chamber; A rotating plate is installed on the outer wall of the stirring roller and is located at the lower end of the first fan blade, which is used to scrape off the middle position of the bottom wall of the mixing chamber to prevent deposition.

[0004] Preferably, the top cover is provided with a movable mechanism, and the movable mechanism includes: A sliding block is slidably mounted in a circular groove provided on the top cover; The connecting rod is rotatably mounted at the middle position of the lower end of the sliding block; the positioning table is mounted on the outer wall of the connecting rod through a bearing and is used to carry the sorting mechanism; The electric telescopic rod is installed at the middle position of the lower end surface of the horizontal section at the front side of the upper end of the positioning platform through a clamping seat, and is used to lift and lower the sorting mechanism; the turntable is installed at the lower end of the electric telescopic rod, and the middle position of the turntable has an upwardly protruding shaft end; The L-shaped plate is rotatably mounted on the outer wall of the turntable and is slidably mounted with the vertical section of the positioning platform; the fixed column is mounted at the middle position of the lower end of the turntable and is used to cooperate with the turntable to install the sorting mechanism.

[0005] Preferably, the arranging mechanism comprises: Two water storage tanks, symmetrically located on opposite sides of the turntable, are used to hold cleaning agents; Two telescopic scrapers are symmetrically distributed on the outer wall of the fixed column and are installed in a sliding manner with the fixed column; The spraying cabin is fitted on the end of the telescopic scraper away from the axis of the fixed column; a No. 1 hose is installed between the water storage tank and the spraying cabin at the corresponding position; The trapezoidal scraper is installed in the middle of the lower end of the fixed column and is used to clean the bottom wall area of ​​the mixing chamber that cannot be cleaned by the rotating plate in all directions; The diversion cabin is installed on the front end face of the trapezoidal scraper, and the lower end opening of the diversion cabin is in an eight-shaped shape; the No. 2 hose is installed between the upper end of the diversion cabin and any water storage tank.

[0006] Preferably, a baffle is installed on the side edge of the telescopic scraper along the side wall. Telescopic cleaning plates are slidably installed on the outer walls of the left and right sides of the trapezoidal scraper, and U-shaped grooves are formed on the outer walls of the left and right sides of the trapezoidal scraper. Fixed plates are symmetrically arranged up and down inside the left and right ends of the trapezoidal scraper. A water-absorbing pad is installed on one side of the fixed plate close to the middle position of the trapezoidal scraper. Drainage holes are evenly formed at the lower ends of the left and right ends of the trapezoidal scraper for discharging the cleaning agent entering the trapezoidal scraper.

[0007] Preferably, a right-angled plate is installed at the right rear position of the upper end surface of the L-shaped plate. A telescopic rack is slidably installed on the horizontal section at the upper end of the right-angled plate, and the end of the telescopic rack close to the vertical section of the L-shaped plate is a spherical end. A driven gear that cooperates with the telescopic rack is installed on the outer wall of the shaft end that protrudes upward in the middle position of the turntable. A cam that cooperates with the spherical end of the telescopic rack is installed at the lower end of the connecting rod.

[0008] Preferably, L-shaped seats are distributed in a rectangular shape on the lower end surface of the top cover. Fixed racks are installed on the L-shaped seats, and there is a sufficient distance between adjacent fixed racks. A driving gear that cooperates with the fixed racks is installed on the outer wall of the upper end of the connecting rod.

[0009] Preferably, a groove is formed at the end of the telescopic scraper away from the fixed column. The upper ends of the telescopic cleaning plate and the trapezoidal scraper are always in contact with the lower end surface of the cleaning end of the telescopic scraper.

[0010] Preferably, the maximum telescopic amount of the telescopic cleaning plate is less than the opening depth of the U-shaped groove. At the same time, the materials of the telescopic scraper, the telescopic cleaning plate, and the baffle are all rubber. Preferably, the lower end surface of the positioning table is 20 cm higher than the upper end surface of the mixing chamber.

[0011] Preferably, the width of the telescopic scraper is 15 cm, and the moving distance of the sliding block each time is 10 cm.

[0012] The present invention has the following beneficial effects: 1. In the present invention, different types of first fan blades and second fan blades are used to classify and stir and cut different liquid phases in the mixing chamber. At the same time, by arranging the first fan blades and the second fan blades symmetrically up and down, the flow space between different liquid phases in the mixing chamber is reduced to a certain extent, which is beneficial to better mixing and mass transfer between phases. At the same time, the mixed phase is sheared and broken more finely through the arc-shaped cutting plate and the fins, increasing the contact area between different phases, and further improving the mixing and mass transfer effect between phases.

[0013] 2. The present invention converts heat signals into electrical signals that control the heat exchanger to perform different operations through an external PLC control system by means of heat transfer tubes and fins that are close to the arc-shaped cutting plate. That is, when the temperature of the liquid phase in the mixing chamber or the clarifying chamber is higher than the optimal temperature for rare earth preparation, the heat exchanger that receives the signal introduces cold air into the heat transfer tube to control the temperature in the mixing chamber or the clarifying chamber within an appropriate range. Similarly, when the temperature in the mixing chamber or the clarifying chamber is lower than the optimal temperature for rare earth preparation, the heat exchanger quickly transfers heat to the liquid phase in the mixing chamber or the clarifying chamber through the heat transfer tubes and fins, thereby controlling the liquid phase fluidity in the mixing chamber or the clarifying chamber to remain in an optimal state, which is beneficial to the stable operation of the stirring mechanism and improves the purity and efficiency of rare earth preparation.

[0014] 3. The present invention uses an electric telescopic rod to drive a telescopic scraper to carry out targeted cleaning of the side walls of the mixing chamber or the clarifying chamber. In this process, the cleaning agent flowing through the spray cabin to the contact position of the telescopic scraper and the mixing chamber or the clarifying chamber is guided by a baffle, that is, the cleaning agent is prevented from flowing to the area cleaned by the telescopic scraper, thereby improving the cleaning ability of the telescopic scraper and reducing the probability of secondary pollution. At the same time, through the mutual cooperation of the trapezoidal scraper and the telescopic cleaning plate, the bottom wall of the mixing chamber or the clarifying chamber remaining after the rotating plate is cleaned and the side wall remaining after the telescopic scraper is scraped are cleaned without omission, thereby reducing the residual extractant on the inner wall of the mixing chamber or the clarifying chamber, so that the rare earth equipment is kept in a stable pH environment for a long time, and the service life of the equipment is increased.

[0015] 4. The present invention controls the cam to squeeze the telescopic rack ball end to the specified position through the relative movement between the driving gear and the fixed rack, thereby causing relative movement between the telescopic rack and the driven gear, and finally realizing the synchronous rotation of the trapezoidal scraper and the telescopic cleaning plate. That is, the working performance of the product in a specific working environment is improved through mechanical transmission, the production cost is reduced to a certain extent, and the control accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of a partial structure of the stirring mechanism of the present invention.

[0018] Figure 3 The present invention is attached Figure 2 A schematic diagram of the enlarged local structure in the middle.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the heat exchanger of the present invention.

[0020] Figure 5 It is a partial structural schematic diagram of the top cover and its lower end movable mechanism and finishing mechanism of the present invention.

[0021] Figure 6 It is a further partial structural schematic diagram of the movable mechanism and the sorting mechanism of the present invention.

[0022] Figure 7 It is an attachment of the present invention Figure 6 Right view.

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the telescopic scraper and the fixed column assembly of the present invention.

[0024] Fig. 9 It is a cross-sectional view after the trapezoidal scraper and the telescopic cleaning plate of the present invention are assembled.

[0025] Fig.10 It is a partial change display diagram during the rotation process of the telescopic cleaning plate and the trapezoidal scraper of the present invention.

[0026] Fig.11 It is a schematic diagram of the movement track of the telescopic scraper of the present invention.

[0027] Reference numerals in the figure: 1, mixing chamber; 2, movable mechanism; 3, stirring mechanism; 4, sorting mechanism; 11, support; 12, top cover; 13, stirring roller; 21, sliding block; 22, connecting rod; 23, positioning table; 24, electric telescopic rod; 25, turntable; 26, L-shaped plate; 27, fixed column; 31, first fan blade; 32, second fan blade; 33, arc cutting plate; 34, heat transfer pipe; 35, fin; 36, heat exchanger; 37, rotating plate; 41, water storage tank; 42, telescopic scraper; 43, spraying cabin; 44, first hose; 45, trapezoidal scraper; 46, diversion cabin; 47, second hose; 111, L-shaped seat; 112, fixed rack; 113, driving gear; 221, cam; 251, right-angle plate; 252, telescopic rack; 253, driven gear; 421, groove; 451, baffle; 452, telescopic cleaning plate; 453, C-shaped groove; 454, fixing plate; 455, water absorption pad; 456, water diversion hole. Embodiment

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] It should be noted that the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] Reference Figure 1 and Figure 2 It can be seen that a mixed clarification extraction tank for rare earth separation includes a mixing chamber 1, a bracket 11 is provided at the rear end of the mixing chamber 1, and a top cover 12 is installed between the upper horizontal section and the vertical section of the bracket 11; a stirring roller 13 is installed at the middle position of the top cover 12 through a built-in driving motor to drive a stirring mechanism 3; a first fan blade 31 is installed at the lower end of the stirring roller 13, and the distance between the first fan blade 31 and the mixing chamber 1 is 20 cm; a second fan blade 32 is installed at the middle position of the stirring roller 13, and the distance between the first fan blade 31 and the second fan blade 32 is 60 cm, and the size of the second fan blade 32 is smaller than the first fan blade 31; Reference Figure 2 , Figure 3 and Figure 4 It can be seen that the arc cutting plates 33 installed in an embedded manner are evenly distributed on the No. 1 fan blade 31 and the No. 2 fan blade 32, and the model, thickness and installation angle of the arc cutting plate 33 on the No. 1 fan blade 31 are larger than those on the No. 2 fan blade 32, which are used to fully crush the mixed light and heavy phase liquids; fins 35 are evenly distributed in the middle position of the outer wall of each arc cutting plate 33, and a heat transfer tube 34 is installed on the upper outer wall of the arc cutting plate 33, and its shape is completely consistent with the arc cutting plate 33; a heat exchanger 36 is built in the stirring roller 13, and is connected to the outside through a connecting pipe, and is connected to the arc cutting plate 33 and the heat transfer tube 34, so as to improve the temperature of the light and heavy phase liquids in the mixing chamber 1; a rotating plate 37 is installed on the outer wall of the stirring roller 13, and is located at the lower end of the No. 1 fan blade 31, which is used to prevent deposition and scrape the middle position of the bottom wall of the mixing chamber 1; First, the liquid phase temperature in the mixing chamber 1 or the clarifying chamber is sensed through the heat transfer tube 34. When the temperature is lower than the temperature required by the rare earth preparation process, the heat transfer tube 34 transmits the heat signal to the external PLC control system. After calculation and analysis by the external PLC control system, the heat exchanger 36 is controlled to transfer heat to the heat transfer tube 34 through an electrical signal until the temperature in the mixing chamber 1 or the clarifying chamber is maintained within the specified processing range (when the temperature is too high at the beginning or during operation, the heat exchanger 36 absorbs heat from the liquid phase through the heat transfer tube 34), which is beneficial to control the fluidity of the liquid phase in the mixing chamber 1 or the clarifying chamber and improve the mass transfer effect between different phases; Then, the stirring roller 13 drives the fan blades 31 and the fan blades 32 of different models to perform graded stirring and shearing on the mixed phase in the mixing chamber 1. Specifically, the stirring roller 13 can be driven to rotate by an external motor. In this process, the fan blades 31 and the fan blades 32 symmetrically arranged up and down can reduce the flow space between different liquid phases in the mixing chamber 1 to a certain extent, which is conducive to better mixing and mass transfer between phases. At the same time, the arc-shaped cutting plate 33 cooperates with the fins 35 (the fins 35 can better release and absorb heat, and are conducive to shearing the mixed phase to a certain extent) to perform more delicate shearing and crushing on the mixed phase, thereby increasing the contact area between different phases, thereby further improving the mixing and mass transfer effect between phases. Finally, the rotating plate 37 is used to scrape the center area of ​​the bottom wall of the mixing chamber 1 after the extraction is completed (the trajectory is a circle). At the same time, the rotating plate 37, the first fan blade 31, the second fan blade 32, the arc cutting plate 33, the heat transfer tube 34 and the fin 35 are rotated at a high speed. Under the action of centrifugal force, the extractant sticking thereon is fully thrown out, which is beneficial to prolonging the service life of each corresponding component and maintaining the pH environment during rare earth preparation; The top cover 12 provides stable support and trajectory guidance for the movable mechanism 2 .

[0032] Reference Figure 1 , Figure 5 and Figure 6 It can be seen that the top cover 12 is provided with a movable mechanism 2. The movable mechanism 2 includes: a sliding block 21, which is slidably mounted in the circular groove provided on the top cover 12; a connecting rod 22, which is rotatably mounted at the middle position of the lower end of the sliding block 21; a positioning platform 23, which is mounted on the outer wall of the connecting rod 22 through a bearing and is used to carry the sorting mechanism 4; an electric telescopic rod 24, which is mounted at the middle position of the lower end surface of the horizontal section on the front side of the upper end of the positioning platform 23 through a clamping seat, and is used to lift the sorting mechanism 4; a turntable 25, which is mounted at the lower end of the electric telescopic rod 24, and an upwardly protruding shaft end is provided at the middle position of the turntable 25; an L-shaped plate 26, which is rotatably mounted on the outer wall of the turntable 25, and is slidably mounted with the vertical section of the positioning platform 23; a fixed column 27, which is mounted at the middle position of the lower end of the turntable 25, and is used to cooperate with the turntable 25 to install the sorting mechanism 4 together; Reference Figure 1 , Figure 6 and Figure 7It can be known that the sorting mechanism 4 includes: two water storage tanks 41, symmetrically distributed on the opposite sides of the turntable 25, for containing cleaning agents; two telescopic scraping plates 42, symmetrically distributed on the outer wall of the fixed column 27, and slidably installed with the fixed column 27; a spray cabin 43, fitted and installed at one end of the telescopic scraping plate 42 away from the axis of the fixed column 27; a first hose 44, a first hose 44 is commonly installed between the water storage tank 41 and the spray cabin 43 at the corresponding position; a trapezoidal scraping plate 45, installed at the middle position of the lower end of the fixed column 27, for comprehensively cleaning the bottom wall area of the mixing chamber 1 that cannot be cleared by the rotating plate 37; a diversion cabin 46, installed on the front end face of the trapezoidal scraping plate 45, and the lower opening of the diversion cabin 46 is in an eight-shaped; a second hose 47, a second hose 47 is commonly installed between the upper end of the diversion cabin 46 and any one of the water storage tanks 41; Refer to Figure 6 、 Figure 8 and Fig. 9 It can be known that a baffle 451 is installed on the side wall along the side edge of the telescopic scraping plate 42, telescopic cleaning plates 452 are slidably installed on the outer walls of the left and right sides of the trapezoidal scraping plate 45, and U-shaped grooves 453 are opened on the outer walls of the left and right sides of the trapezoidal scraping plate 45. Fixed plates 454 are symmetrically arranged up and down inside the left and right ends of the trapezoidal scraping plate 45. A water absorption pad 455 is installed on one side of the fixed plate 454 close to the middle position of the trapezoidal scraping plate 45. Drainage holes 456 are evenly opened at the lower ends of the left and right ends of the trapezoidal scraping plate 45 for discharging the cleaning agent entering the trapezoidal scraping plate 45; Refer to Figure 6 and Figure 7 It can be known that a groove 421 is opened at the cleaning end of the telescopic scraping plate 42, and the upper ends of the telescopic cleaning plate 452 and the trapezoidal scraping plate 45 are always in contact with the lower end surface of the cleaning end of the telescopic scraping plate 42; the maximum telescopic amount of the telescopic cleaning plate 452 is less than the opening depth of the U-shaped groove 453. At the same time, the materials of the telescopic scraping plate 42, the telescopic cleaning plate 452 and the baffle 451 are all rubber; Refer to Figure 1 It can be known that the lower end surface of the positioning table 23 is cm higher than the upper end surface of the mixing chamber 1; the width of the telescopic scraping plate 42 is cm, and the moving distance of the sliding block 21 each time is cm.

[0033] The connecting rod 22 drives the positioning table 23 under the action of the sliding block 21 to stably move to the specified position along the built-in circular groove in the top cover 12. Specifically, the sliding block 21 can be driven by an electric slider to move intermittently; The turntable 25 drives the L-shaped plate 26 (the positioning platform 23 stably supports and guides the L-shaped plate 26 during the movement) and the fixed column 27 to reciprocate in the up and down directions under the action of the electric telescopic rod 24. During this process, the rubber telescopic scraper 42 is always in contact with the side wall of the mixing chamber 1 at the same end, and continuously moves relative to the side wall of the mixing chamber 1 under the action of the fixed column 27, thereby scraping and cleaning the side wall of the mixing chamber 1. At the same time, the No. 1 hose 44 extracts the cleaning agent from the inside of the water storage tank 41, and then flows to the side wall area where the telescopic scraper 42 contacts the mixing chamber 1 through the spray cabin 43. Specifically, the cleaning agent can be pumped into the No. 1 hose 44 from the inside of the water storage tank 41 through an external air pump, and the cleaning agent is guided by the rubber baffle 451, so that the cleaning agent always flows in the direction of travel of the telescopic scraper 42, thereby preventing the cleaning agent mixed with the extractant residue from causing secondary pollution to the area cleaned by the telescopic scraper 42 (pre-treating the area in the direction of travel of the telescopic scraper 42 and where no cleaning agent exists); When the sliding block 21 moves from one end to the other, the telescopic scraper 42 just moves from one end to the other end of the mixing chamber 1. At the same time, since the length of the contact area between the telescopic scraper 42 and the mixing chamber 1 is greater than the single movement distance of the sliding block 21 (if the single movement distance of the sliding block 21 is equal to or greater than the length of the contact area between the telescopic scraper 42 and the side wall of the mixing chamber 1, there will be uncleaned areas in the adjacent areas before and after the telescopic scraper 42 scrapes the side wall of the mixing chamber 1), the telescopic scraper 42 can fully scrape the side wall of the mixing chamber 1. The specific trajectory can refer to the figure, which is conducive to improving the cleaning ability of the telescopic scraper 42 and fully scraping the residual extractant on the side wall of the mixing chamber 1. The telescopic scraper 42 drives the trapezoidal scraper 45 to move downward under the action of the electric telescopic rod 24 until the lower end of the trapezoidal scraper 45 contacts and squeezes the bottom wall of the mixing chamber 1. Thereafter, when the sliding block 21 moves, the telescopic cleaning plate 452 is always in contact with the side wall of the mixing chamber 1 under the action of its own elastic force, and the area not cleaned by the telescopic scraper 42 is supplemented and cleaned during the movement (as shown in the figure). At the same time, the No. 2 hose 47 draws cleaning agent from the inside of the water storage tank 41, and then flows through the guide cabin 46 with an eight-shaped lower end to the trapezoidal scraper 45 and the lower end of the telescopic cleaning plate 452 and the contact area with the bottom wall of the mixing chamber 1. Specifically, the cleaning agent can be pumped from the water storage tank 41 to the No. 2 hose 47 through an external air pump; During the telescopic process, a small amount of water vapor on the outer wall of the shaft end of the telescopic cleaning plate 452 is adsorbed by the water absorption pad 455 (the maximum telescopic amount of the telescopic cleaning plate 452 is less than the opening depth of the U-shaped groove 453, so a small amount of water vapor adheres to the outer wall of its shaft end, and then a small amount of liquid infiltrated into the trapezoidal scraper 45 is drained through the water diversion hole 456). At the same time, due to the setting of the U-shaped groove 453, when the telescopic cleaning plate 452 reaches the maximum telescopic amount, there is no gap left between the telescopic cleaning plate 452 and the trapezoidal scraper 45, thus avoiding affecting the complete cleaning of the bottom wall of the mixing chamber 1; Through the setting of the groove 421, the acting force between the telescopic scraper 42 and the side wall of the mixing chamber 1 is strengthened, which is beneficial to improving the scraping ability of the telescopic scraper 42 (when the groove 421 contacts the mixing chamber 1, the internal and external pressures at the contact area between the telescopic scraper 42 and it change suddenly); By limiting the height of the lower end of the positioning table 23, when the sliding block 21 moves, the positioning table 23 is prevented from colliding with the mixing chamber 1 and restricting the movement of the sliding block 21.

[0034] Refer to Figure 1 and Figure 5 As can be seen, a right-angled plate 251 is installed at the right rear position of the upper end surface of the L-shaped plate 26. A telescopic rack 252 is slidably installed on the horizontal section of the upper end of the right-angled plate 251, and the end of the telescopic rack 252 close to the vertical section of the L-shaped plate 26 is a spherical end. An outer wall of the shaft end that protrudes upward in the middle position of the turntable 25 is provided with a driven gear 253 that cooperates with the telescopic rack 252. The lower end of the connecting rod 22 is installed with a cam 221 that cooperates with the spherical end of the telescopic rack 252; Refer to Figure 5 and Figure 6 As can be seen, a fixed rack 112 is installed on the L-shaped seat 111, and there is a sufficient distance between adjacent fixed racks 112. An outer wall of the upper end of the connecting rod 22 is provided with a driving gear 113 that cooperates with the fixed rack 112; When the driving gear 113 reaches the designated position and starts to move relative to the fixed rack 112 at the corresponding position, the cam 221 rotates a certain angle under the action of the connecting rod 22 and contacts and presses the spherical end of the telescopic rack 252. After that, relative movement occurs between the moving telescopic rack 252 and the driven gear 253. Then, the telescopic scraper 42, the trapezoidal scraper 45, and the telescopic cleaning plate 452 rotate synchronously. During this process, the telescopic cleaning plate 452 always contacts the inner wall of the mixing chamber 1 (as shown in the figure), and affected by the sliding block 21, the telescopic scraper 42 moves horizontally while rotating. Therefore, the telescopic cleaning plate 452 can cooperate with the trapezoidal scraper 45 to clean the side wall and the bottom wall of the corner area of the mixing chamber 1 simultaneously during the rotation process; Finally, clean water is poured into the mixing chamber 1 through an externally connected clean water inlet, and then the cleaning agent mixed with the extractant inside is taken away by using the externally connected water outlet at the bottom.

[0035] The working principle of the mixed clarification extraction tank for rare earth separation provided by the present invention is as follows: Step 1: First, the stirring roller 13 drives the first blade 31 and the second blade 32 to grade and cut and stir the mixed phase in the mixing chamber 1. At the same time, the arc cutting plate 33 cooperates with the fin 35 to further shear the mixed phase. In this process, the temperature of the mixed phase in the mixing chamber 1 is sensed by the heat transfer tube 34, and finally the heat is released and absorbed through the heat exchanger 36; Step 2: Then, the positioning table 23 and the finishing mechanism 4 thereon are driven by the sliding block 21 to make a circular motion along the top cover 12. During this process, the rotating table 25 and the L-shaped plate 26 are driven to reciprocate up and down by the electric telescopic rod 24, thereby driving the telescopic scraper 42 to scrape and clean the side wall of the mixing chamber 1 accordingly; Step 3: Finally, through the relative movement between the driving gear 113 and the fixed rack 112, the connecting rod 22 is controlled to drive the cam 221 to squeeze the telescopic rack 252, thereby controlling the driven gear 253 to drive the turntable 25 to rotate, and then the trapezoidal scraper 45 cooperates with the telescopic cleaning plate 452 to rotate and scrape and clean the inner wall of the mixing chamber 1 while moving horizontally.

[0036] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0037] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mixed clarification extraction tank for rare earth separation, comprising a mixing chamber (1), characterized in that: A bracket (11) is provided at the rear end of the mixing chamber (1), and a top cover (12) is installed between the upper horizontal section and the vertical section of the bracket (11); A stirring roller (13) is installed in the middle of the top cover (12) via a built-in driving motor to drive the stirring mechanism (3); A first fan blade (31) is installed at the lower end of the stirring roller (13) and is 20 cm away from the bottom wall of the mixing chamber (1); a second fan blade (32) is installed at the middle of the stirring roller (13) and is 60 cm away from the first fan blade (31), and the size of the second fan blade (32) is smaller than that of the first fan blade (31); The first fan blade (31) and the second fan blade (32) are evenly distributed with embedded arc-shaped cutting plates (33), and the model, thickness and installation angle of the arc-shaped cutting plate (33) on the first fan blade (31) are larger than those of the arc-shaped cutting plate (33) on the second fan blade (32), so as to fully crush the mixed light and heavy phase liquids; fins (35) are evenly distributed at the middle position of the outer wall of each arc-shaped cutting plate (33), and a heat transfer tube (34) is installed on the upper outer wall of the arc-shaped cutting plate (33), and its shape is completely consistent with that of the arc-shaped cutting plate (33); A heat exchanger (36) is built into the stirring roller (13), and is connected to the outside through a connecting pipe and is also connected to the arc-shaped cutting plate (33) and the heat transfer pipe (34), so as to improve the temperature of the light and heavy phase liquids in the mixing chamber (1); A rotating plate (37) is installed on the outer wall of the stirring roller (13) and is located at the lower end of the first fan blade (31) for preventing deposition by scraping off the middle position of the bottom wall of the mixing chamber (1).

2. The mixed clarification extraction tank for rare earth separation according to claim 1, characterized in that: The top cover (12) is provided with a movable mechanism (2). The movable mechanism (2) comprises: A sliding block (21) is slidably mounted in a circular groove provided on the top cover (12); A connecting rod (22) is rotatably mounted at the middle position of the lower end of the sliding block (21); a positioning table (23) is mounted on the outer wall of the connecting rod (22) through a bearing and is used to carry the sorting mechanism (4); An electric telescopic rod (24) is mounted at the middle position of the lower end surface of the horizontal section at the front side of the upper end of the positioning platform (23) through a clamping seat, and is used to lift and lower the sorting mechanism (4); a turntable (25) is mounted at the lower end of the electric telescopic rod (24), and an upwardly protruding shaft end is provided at the middle position of the turntable (25); The L-shaped plate (26) is rotatably mounted on the outer wall of the turntable (25) and is slidably mounted with the vertical section of the positioning platform (23); the fixing column (27) is mounted at the middle position of the lower end of the turntable (25) and is used to cooperate with the turntable (25) to jointly install the sorting mechanism (4).

3. The mixed clarification extraction tank for rare earth separation according to claim 2, characterized in that: The arranging mechanism (4) comprises: Two water storage tanks (41) are symmetrically arranged on opposite sides of the turntable (25) and are used to contain cleaning agents; Two telescopic scrapers (42) are symmetrically distributed on the outer wall of the fixed column (27) and are slidably mounted on the fixed column (27); A spraying cabin (43) is fitted and mounted on one end of the telescopic scraper (42) away from the axis of the fixed column (27); a No. 1 hose (44) is installed between the water storage tank (41) and the spraying cabin (43) at a corresponding position; The trapezoidal scraping plate (45) is installed at the middle position of the lower end of the fixed column (27) and is used to comprehensively clean the bottom wall area of the mixing chamber (1) that cannot be cleaned by the rotating plate (37). The diversion chamber (46) is installed on the front side end face of the trapezoidal scraping plate (45), and the lower end opening of the diversion chamber (46) is in an inverted V shape; the second hose (47) is installed between the upper end of the diversion chamber (46) and any one of the water storage tanks (41).

4. The mixed clarification extraction tank for rare earth separation according to claim 3, characterized in that: A baffle (451) is installed on the side edge of the side wall of the telescopic scraping plate (42). Telescopic cleaning plates (452) are slidably installed on the outer walls of the left and right sides of the trapezoidal scraping plate (45), and U-shaped grooves (453) are formed in the outer walls of the left and right sides of the trapezoidal scraping plate (45). Fixed plates (454) are symmetrically arranged up and down inside the left and right ends of the trapezoidal scraping plate (45). A water absorption pad (455) is installed on one side of the fixed plate (454) close to the middle position of the trapezoidal scraping plate (45). Drainage holes (456) are evenly formed at the lower ends of the left and right ends of the trapezoidal scraping plate (45) for discharging the cleaning agent that enters the trapezoidal scraping plate (45).

5. The mixed clarification extraction tank for rare earth separation according to claim 2, characterized in that: A right-angle plate (251) is installed at the right rear side position of the upper end face of the L-shaped plate (26). A telescopic rack (252) is slidably installed on the horizontal section of the upper end of the right-angle plate (251), and the end of the telescopic rack (252) close to the vertical section of the L-shaped plate (26) is a spherical end. A driven gear (253) that cooperates with the telescopic rack (252) is installed on the outer wall of the shaft end that protrudes upward in the middle position of the turntable (25). A cam (221) that cooperates with the spherical end of the telescopic rack (252) is installed at the lower end of the connecting rod (22).

6. The mixed clarification extraction tank for rare earth separation according to claim 3, characterized in that: L-shaped seats (111) are distributed in a rectangular shape on the lower end face of the top cover (12). Fixed racks (112) are installed on the L-shaped seats (111), and there is a sufficient distance between adjacent fixed racks (112). A driving gear (113) that cooperates with the fixed rack (112) is installed on the outer wall of the upper end of the connecting rod (22).

7. The mixed clarification extraction tank for rare earth separation according to claim 3, characterized in that: A groove (421) is formed at one end of the telescopic scraping plate (42) away from the fixed column (27). The upper ends of the telescopic cleaning plate (452) and the trapezoidal scraping plate (45) are always in contact with the lower end face of the cleaning end of the telescopic scraping plate (42).

8. The mixed clarification extraction tank for rare earth separation according to claim 4, characterized in that: The maximum telescopic amount of the telescopic cleaning plate (452) is less than the opening depth of the U-shaped groove (453). At the same time, the materials of the telescopic scraping plate (42), the telescopic cleaning plate (452), and the baffle (451) are all rubber.

9. The mixed clarification extraction tank for rare earth separation according to claim 3, characterized in that: The lower end face of the positioning table (23) is 20 cm higher than the upper end face of the mixing chamber (1).

10. The mixed clarification extraction tank for rare earth separation according to claim 7, characterized in that: The width of the telescopic scraping plate (42) is 15 cm, and the moving distance of the sliding block (21) each time is 10 cm.

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