Anhydrous rare earth halide purification and dehydration equipment

Abstract

The present invention relates to the field of chemical production technology, specifically to an anhydrous rare earth halide purification and dehydration device, comprising a dehydration tank, a liquid storage tank, a collection tank, a vacuum pump, a motor, and a plurality of heating tubes. The dehydration tank has a device cavity formed therein, a rotating shaft is fixedly mounted at the end of the motor's output shaft, the upper end of the rotating shaft passes through the bottom of the dehydration tank and extends into the interior of the device cavity, two stirring rods for stirring the material are fixedly mounted on the outer edge of the rotating shaft within the device cavity, and a scraper for cleaning the inner wall of the device cavity is also fixedly mounted on the upper end of the rotating shaft. The present invention scrapes the material on the inner wall of the device cavity by rotating the scraper, thereby preventing a large amount of material from adhering to the inner wall of the dehydration tank. The Tesla valve drives the airflow to accelerate, thereby accelerating the flow of water vapor inside the dehydration tank and improving the dehydration efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of chemical production, in particular to anhydrous rare earth halide purification and dehydration equipment. Background Art

[0002] Anhydrous rare earth halides are important chemical reagents in the chemical and manufacturing industries, with significant and broad application prospects in luminescent materials, thermal insulation materials, hydrogen storage materials, ceramic materials, catalysis, and military applications. However, the preparation of anhydrous rare earth halides requires the removal of impurities such as oxyhalides and oxides, which are generated by their extreme deliquescent nature. This makes the preparation of anhydrous rare earth halides extremely difficult.

[0003] The vacuum dehydration equipment for preparing anhydrous rare earth halides is composed of a furnace body, a heating element, a vacuum system, etc. The rare earth halides to be dehydrated are loaded into the furnace, the furnace door is sealed, and the temperature is increased and dehydrated under a vacuum state to obtain anhydrous rare earth halides. Traditional equipment is used for production. Since the furnace body includes a heating element and has a large volume, it usually takes a long time to dehydrate the product, thereby reducing production efficiency.

[0004] Therefore, an anhydrous rare earth halide purification and dehydration device is proposed. Summary of the Invention

[0005] The object of the present invention is to provide an anhydrous rare earth halide purification and dehydration device, which scrapes the material on the inner wall of the device cavity by rotating a scraper to prevent a large amount of material from adhering to the inner wall of the dehydration tank, accelerates the air flow through the Tesla valve, and further accelerates the flow of water vapor inside the dehydration tank, thereby improving the dehydration efficiency, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for purifying and dehydrating anhydrous rare earth halides comprises a dehydration tank, a liquid storage tank disposed on one side of the dehydration tank for containing coolant, a collection tank disposed on the other side of the dehydration tank, a vacuum pump disposed on one side of the liquid storage tank and connected to the interior of the dehydration tank via a conduit, a motor disposed below the dehydration tank, and a plurality of heating tubes fixedly mounted on the inner bottom of the dehydration tank at circumferentially equal intervals. A device cavity is defined within the dehydration tank, a rotating shaft is fixedly mounted on the end of the output shaft of the motor, the upper end of the rotating shaft passes through the bottom of the dehydration tank and extends into the interior of the device cavity, two stirring rods for stirring materials are fixedly mounted on the outer edge of the rotating shaft inside the device cavity, and a scraper for cleaning the inner wall of the device cavity is also fixedly mounted on the upper end of the rotating shaft.

[0008] Preferably, the scraper is in a spiral shape.

[0009] When purifying and dehydrating anhydrous rare earth halide materials, the materials are first put into the interior of the dehydration tank, and then the interior of the device cavity is evacuated by a vacuum pump. After the vacuum degree reaches -0.095MPa, multiple heating tubes are powered, and when the temperature rises to about 350°C, the motor is started, and then the rotating shaft is driven to rotate, and then the stirring rod is driven to stir the material inside the device cavity to make it fully heated and dehydrated. At the same time, the rotating shaft can also drive the scraper to rotate, and then scrape the material on the inner wall of the device cavity to prevent too much material from sticking to the inner wall of the dehydration tank.

[0010] Preferably, the bottom of the collecting tank is connected to the bottom of the dehydration tank through a discharge pipe, and two first control valves are installed at the upper end of the discharge pipe.

[0011] After dehydration is completed, the two first control valves can be opened so that the dehydrated material can enter the interior of the collection tank through the discharge pipe.

[0012] Preferably, a rectangular groove is provided inside the liquid storage tank, the middle bend of the conduit extends to the inside of the rectangular groove, and a connecting pipe is provided at the upper end of the conduit, and a Tesla valve is installed inside the connecting pipe.

[0013] Preferably, a water pump is installed outside the liquid storage tank, a water pump is installed at the water inlet end of the water pump, one end of the water pump passes through the liquid storage tank and is connected to the bottom of the conduit, and a second control valve is fixedly installed inside the water pump.

[0014] During the dehydration process, the pressure inside the device cavity increases, and the vaporized water will flow through the connecting pipe to the bend of the conduit, and will be cooled and liquefied inside the rectangular groove. Then the water pump is started, and the second control valve is opened to extract the liquefied water. At the same time, when the gas flows from top to bottom, it can bypass all arc-shaped obstacles, and the gas can flow smoothly through the entire channel inside the valve. However, if the gas flows in the opposite direction from bottom to top, each time the airflow passes through a channel, it will hit an arc-shaped obstacle, and then change direction and flow back backward, thereby impacting the initial airflow. The more arc-shaped obstacles there are in the valve, the more difficult it is for the gas to flow upward, which in turn causes the one-way conduction effect of the Tesla valve. Because downward diffusion is easier than backward diffusion, there is continuous flow pressure in the valve, which leads to the acceleration of the airflow, thereby accelerating the flow of water vapor inside the dehydration tank and improving the dehydration efficiency.

[0015] Preferably, a semiconductor cooling fin is fixedly mounted on the inner wall of the rectangular groove.

[0016] Preferably, a first controller is provided outside the dehydration tank, and the vacuum pump, water pump, motor, multiple heating tubes, first control valve, second control valve and semiconductor refrigeration plate are all electrically connected to the first controller.

[0017] The semiconductor refrigeration chip is powered by the first controller, and then the liquid inside the liquid storage tank can be cooled by the semiconductor refrigeration chip, thereby improving the liquefaction efficiency of the water inside the conduit, thereby accelerating the dehydration of the material.

[0018] Preferably, two sliding rods are fixedly installed between the dehydration tank and the liquid storage tank, and electromagnets are slidably installed on the outside of the two sliding rods. A metal gadolinium block is fixedly installed between the two electromagnets, and a conductive spring is sleeved on the outside of the two sliding rods. One side of the two electromagnets is elastically connected to the outer wall of the dehydration tank through the conductive spring.

[0019] Preferably, a second controller is provided outside the dehydration tank, and the two electromagnets and the two conductive springs are electrically connected to the second controller.

[0020] When the material is dehydrated, the two electromagnets and the conductive spring can be powered by the second controller. The conductive spring will contract after passing through, thereby driving the two electromagnets to move toward the dehydration tank, so that the metal gadolinium block can be close to the outer wall of the dehydration tank. At the same time, after the metal gadolinium block feels the magnetic force of the two electromagnets, it will quickly heat up, thereby heating the outer wall of the dehydration tank, thereby further improving the dehydration efficiency. After the dehydration is completed, the second controller will no longer power the electromagnet and the conductive spring, and then the conductive spring will rebound under its own elastic force, so that the metal gadolinium block can be close to the outer wall of the liquid storage tank. At the same time, the two electromagnets will no longer generate magnetic force. At this time, the metal gadolinium block will change from initial heat generation to heat absorption and reach an extremely low temperature, and then cool the inside of the liquid storage tank, thereby improving the liquefaction efficiency of the water body.

[0021] Preferably, one side wall of the metal gadolinium block is arc-shaped.

[0022] The curved outer wall allows the metal gadolinium block to be in close contact with the outer wall of the dehydration tank, so that the heat generated by the metal gadolinium block can be efficiently transferred to the side wall of the dehydration tank.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. When purifying and dehydrating anhydrous rare earth halide materials, the stirring rod can be driven to stir the materials inside the device cavity so that they are fully heated and dehydrated. At the same time, the rotating shaft can also drive the scraper to rotate, thereby scraping the materials on the inner wall of the device cavity to prevent more materials from sticking to the inner wall of the dehydration tank.

[0025] 2. Install a Tesla valve inside the connecting pipe so that there is flow pressure inside the valve, which leads to the acceleration of the airflow, thereby speeding up the flow of water vapor inside the dehydration tank and improving the dehydration efficiency.

[0026] 3. The heat generated by the metal gadolinium block is used to heat the outer wall of the dehydration tank, thereby further improving the dehydration efficiency. After the dehydration is completed, the heat absorbed by the metal gadolinium block is used to cool the interior of the liquid storage tank, thereby improving the liquefaction efficiency of the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 Schematic diagram of the internal structure of the liquid storage tank of the present invention;

[0029] Figure 3 This is a schematic diagram of the liquid flowing in the connecting pipe of the present invention in the forward direction;

[0030] Figure 4 This is a schematic diagram of the reverse flow of liquid inside the connecting pipe of the present invention;

[0031] Figure 5 This is a schematic structural diagram of Example 1 of the present invention;

[0032] Figure 6 for Figure 5 A magnified view of the structure at point A;

[0033] Figure 7 This is a schematic structural diagram of Example 2 of the present invention;

[0034] Figure 8 FIG. 4 is a top view of the metal gadolinium block of the present invention.

[0035] In the figure: 1 dehydration tank, 2 device chamber, 3 liquid storage tank, 4 rectangular trough, 5 collection tank, 6 vacuum pump, 7 water pump, 8 conduit, 9 connecting pipe, 10 motor, 11 rotating shaft, 12 scraper, 13 stirring rod, 14 heating pipe, 15 discharge pipe, 16 first control valve, 17 water extraction pipe, 18 second control valve, 19 semiconductor cooling plate, 20 sliding rod, 21 electromagnet, 22 conductive spring, 23 metal gadolinium block. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1;

[0038] See also Figures 1 to 5 The present invention provides an anhydrous rare earth halide purification and dehydration device, the technical solution is as follows:

[0039] A dehydration device for purifying and dehydrating anhydrous rare earth halides includes a dehydration tank 1, a liquid storage tank 3, which is placed on one side of the dehydration tank 1 and is used to hold a coolant, a collection tank 5, which is placed on the other side of the dehydration tank 1, a vacuum pump 6, which is placed on one side of the liquid storage tank 3, fixed to the ground, and connected to the interior of the dehydration tank 1 through a conduit 8, a motor 10, which is placed below the dehydration tank 1 and fixed to the ground, a plurality of heating tubes 14, which are fixedly mounted on the inner bottom of the dehydration tank 1 at equal circumferential intervals, a device chamber 2 being defined inside the dehydration tank 1, a rotating shaft 11 being fixedly mounted on the end of the output shaft of the motor 10, the upper end of the rotating shaft 11 passing through the bottom of the dehydration tank 1 and extending into the interior of the device chamber 2, two stirring rods 13 for stirring the material being fixedly mounted on the outer edge of the rotating shaft 11 inside the device chamber 2, and a scraper 12 for cleaning the inner wall of the device chamber 2 being fixedly mounted on the upper end of the rotating shaft 11, the scraper 12 being spiral in shape.

[0040] When purifying and dehydrating anhydrous rare earth halide materials, the materials are first placed into the interior of the dehydration tank 1, and then the interior of the device chamber 2 is evacuated by the vacuum pump 6. After the vacuum degree reaches -0.095 MPa, the multiple heating tubes 14 are powered, and when the temperature rises to about 350°C, the motor 10 is started, and then the rotating shaft 11 is driven to rotate, and then the stirring rod 13 is driven to stir the material inside the device chamber 2 so that it is fully heated and dehydrated. At the same time, the rotating shaft 11 can also drive the scraper 12 to rotate, thereby scraping the material on the inner wall of the device chamber 2 to prevent too much material from sticking to the inner wall of the dehydration tank 1.

[0041] As an embodiment of the present invention, refer to Figure 1 The collecting tank 5 is connected to the bottom of the dehydration tank 1 through a discharge pipe 15 , and two first control valves 16 are installed on the upper end of the discharge pipe 15 .

[0042] After dehydration is completed, the two first control valves 16 can be opened so that the dehydrated material can enter the interior of the collection tank 5 through the discharge pipe 15 .

[0043] As an embodiment of the present invention, refer to Figure 1-5 A rectangular groove 4 is provided inside the liquid storage tank 3, and the middle bend of the conduit 8 extends to the inside of the rectangular groove 4. A connecting pipe 9 is also provided at the upper end of the conduit 8, and a Tesla valve is installed inside the connecting pipe 9. A water pump 7 is also installed outside the liquid storage tank 3, and the water pump 7 is fixed to the ground. A water pump 17 is installed at the water inlet end of the water pump 7. One end of the water pump 17 passes through the liquid storage tank 3 and is connected to the bottom of the conduit 8. A second control valve 18 is also fixed inside the water pump 17.

[0044] During the dehydration process, the pressure inside the device chamber 2 increases, and the vaporized water will flow through the connecting pipe 9 to the bend of the conduit 8, and will be liquefied when cooled inside the rectangular groove 4. Then the water pump 7 is started, and the second control valve 18 is opened to extract the liquefied water. At the same time, when the gas flows from top to bottom, it can bypass some arc-shaped obstacles, and the gas can flow smoothly through the entire channel inside the valve. However, if the gas flows in the opposite direction from bottom to top, each time the airflow passes through a channel, it will hit an arc-shaped obstacle, and then change direction and flow back backward, thereby impacting the initial airflow. The more arc-shaped obstacles there are in the valve, the more difficult it is for the gas to flow upward, thereby causing the one-way conduction effect of the Tesla valve. Because downward diffusion is easier than backward diffusion, there is a continuous flow pressure inside the valve, which leads to the acceleration of the airflow, thereby accelerating the flow of water vapor inside the dehydration tank 1 and improving the dehydration efficiency.

[0045] As an embodiment of the present invention, refer to Figure 1 A semiconductor refrigeration plate 19 is also fixedly installed on the inner wall of the rectangular groove 4. A first controller is provided on the outside of the dehydration tank 1. The vacuum pump 6, water pump 7, motor 10, multiple heating tubes 14, first control valve 16, second control valve 18 and semiconductor refrigeration plate 19 are all electrically connected to the first controller.

[0046] The semiconductor refrigeration chip 19 is powered by the first controller, and then the liquid inside the liquid storage tank 3 can be cooled by the semiconductor refrigeration chip 19, thereby improving the liquefaction efficiency of the water inside the conduit 8, thereby accelerating the dehydration of the material.

[0047] Working principle: When purifying and dehydrating anhydrous rare earth halide materials, the materials are first put into the interior of the dehydration tank 1, and then the interior of the device chamber 2 is evacuated by the vacuum pump 6. After the vacuum degree reaches -0.095MPa, the multiple heating tubes 14 are powered, and when the temperature rises to about 350°C, the motor 10 is started, and then the rotating shaft 11 is driven to rotate, and then the stirring rod 13 is driven to stir the material inside the device chamber 2 so that it is fully heated and dehydrated. At the same time, the rotating shaft 11 can also drive the scraper 12 to rotate, thereby scraping the material on the inner wall of the device chamber 2 to prevent more material from sticking to the inner wall of the dehydration tank 1. During the dehydration process, the pressure inside the device chamber 2 increases, and the vaporized water will flow through the connecting pipe 9 to the bend of the conduit 8, and will be liquefied when cooled inside the rectangular groove 4. Then the water pump 7 is started, and the second control valve 18 is opened to extract the liquefied water. At the same time, the gas can flow from top to bottom and around Through the arc-shaped obstacles, the gas can flow smoothly through the entire channel in the valve. However, if the gas flows in the opposite direction from bottom to top, each time the airflow passes through a channel, it will impact an arc-shaped obstacle, and then change direction and flow back backward, thereby impacting the initial airflow. The more arc-shaped obstacles there are in the valve, the more difficult it is for the gas to flow upward, thereby causing the one-way conduction effect of the Tesla valve. Because downward diffusion is easier than backward diffusion, there is a continuous flow pressure in the valve, which leads to the acceleration of the airflow, thereby accelerating the flow of water vapor inside the dehydration tank 1 and improving the dehydration efficiency. The semiconductor refrigeration plate 19 is powered by the first controller, and then the liquid inside the liquid storage tank 3 can be cooled by the semiconductor refrigeration plate 19, thereby improving the water liquefaction efficiency inside the conduit 8, thereby accelerating the dehydration of the material. After the dehydration is completed, the two first control valves 16 can be opened so that the dehydrated material can enter the interior of the collection tank 5 through the discharge pipe 15.

[0048] Example 2;

[0049] Reference Figure 6-8 :

[0050] The difference between this embodiment and embodiment 1 is that: two sliding rods 20 are fixedly installed between the dehydration tank 1 and the liquid storage tank 3, and electromagnets 21 are slidably installed on the outside of the two sliding rods 20. A metal gadolinium block 23 is fixedly installed between the two electromagnets 21. The outside of the two sliding rods 20 is provided with a conductive spring 22, and one side of the two electromagnets 21 is elastically connected to the outer wall of the dehydration tank 1 through the conductive spring 22. A second controller is provided on the outside of the dehydration tank 1, and the two electromagnets 21 and the two conductive springs 22 are electrically connected to the second controller.

[0051] When the material is dehydrated, the two electromagnets 21 and the conductive spring 22 can be powered by the second controller. The conductive spring 22 will contract after passing through, thereby driving the two electromagnets 21 to move toward the dehydration tank 1, so that the metal gadolinium block 23 can be close to the outer wall of the dehydration tank 1. At the same time, after the metal gadolinium block 23 feels the magnetic force of the two electromagnets 21, it will quickly heat up, thereby heating the outer wall of the dehydration tank 1, thereby further improving the dehydration efficiency. After the dehydration is completed, the second controller no longer powers the electromagnet 21 and the conductive spring 22, and then the conductive spring 22 will rebound under its own elastic force, so that the metal gadolinium block 23 can be close to the outer wall of the liquid storage tank 3. At the same time, the two electromagnets 21 no longer generate magnetic force. At this time, the metal gadolinium block 23 will change from initial heat generation to heat absorption and reach an extremely low temperature, and then cool the interior of the liquid storage tank 3, thereby improving the liquefaction efficiency of the water body.

[0052] As an embodiment of the present invention, refer to Figure 8 , one side wall of the metal gadolinium block 23 is arc-shaped.

[0053] The curved outer wall allows the metal gadolinium block 23 to be in close contact with the outer wall of the dehydration tank 1 , so that the heat generated by the metal gadolinium block 23 can be efficiently transferred to the side wall of the dehydration tank 1 .

[0054] Working principle: When dehydrating the material, the two electromagnets 21 and the conductive spring 22 can be powered by the second controller. The conductive spring 22 will shrink after passing through, thereby driving the two electromagnets 21 to move toward the dehydration tank 1, so that the metal gadolinium block 23 can be close to the outer wall of the dehydration tank 1. At the same time, the metal gadolinium block 23 will quickly heat up after feeling the magnetic force of the two electromagnets 21, thereby heating the outer wall of the dehydration tank 1, thereby further improving the dehydration efficiency. After dehydration is completed, the second controller will no longer power the electromagnets 21 and the conductive spring 22. The electric spring 22 supplies power, and then the conductive spring 22 rebounds under its own elastic force, allowing the metal gadolinium block 23 to cling to the outer wall of the liquid storage tank 3. At the same time, the two electromagnets 21 no longer generate magnetic force. At this time, the metal gadolinium block 23 will change from initial heat generation to heat absorption and reach an extremely low temperature, and then cool the interior of the liquid storage tank 3, thereby improving the liquefaction efficiency of the water body. The curved outer wall allows the metal gadolinium block 23 to cling to the outer wall of the dehydration tank 1, so that the heat generated by the metal gadolinium block 23 can be efficiently transferred to the side wall of the dehydration tank 1.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An anhydrous rare earth halide purification and dehydration device, comprising a dehydration tank (1); A liquid storage tank (3) is placed on one side of the dehydration tank (1) and is used to contain cooling liquid; A collecting tank (5) is placed on the other side of the dehydration tank (1); A vacuum pump (6) is placed on one side of the liquid storage tank (3) and is connected to the interior of the dehydration tank (1) through a conduit (8); a motor (10) is placed below the dehydration tank (1); A plurality of heating tubes (14) are fixedly mounted at equal intervals in the circumferential direction on the inner bottom of the dehydration tank (1); Its characteristics are: The dehydration tank (1) is provided with a device cavity (2), the output shaft end of the motor (10) is fixedly mounted with a rotating shaft (11), the upper end of the rotating shaft (11) passes through the bottom of the dehydration tank (1) and extends into the device cavity (2), the outer edge of the rotating shaft (11) is fixedly mounted inside the device cavity (2) with two stirring rods (13) for stirring the material, and the upper end of the rotating shaft (11) is also fixedly mounted with a scraper (12) for cleaning the inner wall of the device cavity (2); The scraper (12) is in a spiral shape; The collecting tank (5) is connected to the bottom of the dehydration tank (1) through a discharge pipe (15), and two first control valves (16) are installed at the upper end of the discharge pipe (15); A rectangular groove (4) is provided inside the liquid storage tank (3), a middle bend of the conduit (8) extends to the inside of the rectangular groove (4), a connecting pipe (9) is provided at the upper end of the conduit (8), and a Tesla valve is installed inside the connecting pipe (9); A water pump (7) is further installed outside the liquid storage tank (3), a water pump (17) is installed at the water inlet end of the water pump (7), one end of the water pump (17) passes through the liquid storage tank (3) and is connected to the bottom of the conduit (8), and a second control valve (18) is further fixedly installed inside the water pump (17); A semiconductor cooling sheet (19) is also fixedly mounted on the inner wall of the rectangular groove (4); A first controller is provided outside the dehydration tank (1), and the vacuum pump (6), the water pump (7), the motor (10), the plurality of heating tubes (14), the first control valve (16), the second control valve (18), and the semiconductor refrigeration plate (19) are all electrically connected to the first controller; Two slide bars (20) are fixedly installed between the dehydration tank (1) and the liquid storage tank (3); electromagnets (21) are slidably installed on the outside of the two slide bars (20); a metal gadolinium block (23) is fixedly installed between the two electromagnets (21); a side wall of the metal gadolinium block (23) is arc-shaped; a conductive spring (22) is sleeved on the outside of the two slide bars (20); one side of the two electromagnets (21) is elastically connected to the outer wall of the dehydration tank (1) through the conductive spring (22); the installation position of the metal gadolinium block (23) is higher than the plurality of heating tubes (14); A second controller is provided outside the dehydration tank (1), and the two electromagnets (21) and the two conductive springs (22) are electrically connected to the second controller.

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