Device and method for extracting and recovering cesium chloride

Abstract

The invention relates to the technical field of cesium chloride extraction processing, in particular to a cesium chloride extraction and recovery device and method, and solves the problems that when cesium chloride is subjected to centrifugal extraction, a large amount of raw material solution is left at the bottom of a centrifugal inner barrel after filling of the raw material solution is stopped, and the raw material solution cannot be continuously subjected to centrifugal extraction; and raw material solution waste is caused. A cesium chloride extraction and recovery device comprises a machine body, a first discharging pipe, a second discharging pipe and two feeding pipes are fixed to the outer side of the machine body, a centrifugal motor is fixed to the top end of the machine body, a centrifugal inner barrel is rotationally installed in the machine body, and the output shaft end of the centrifugal motor penetrates through the machine body and is fixed to the top end of the centrifugal inner barrel; and a liquid outlet bin is arranged between the centrifugal inner barrel and the machine body. The lifting circular ring and the sealing plate move up and down in the centrifugal inner barrel, raw material solutions left at the bottom of the centrifugal inner barrel are conveyed upwards, the raw material solutions continue to be subjected to centrifugal extraction, and therefore waste of the raw material solutions is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cesium chloride extraction and processing, in particular to a cesium chloride extraction and recovery device and method. Background Art

[0002] Cesium chloride is an inorganic salt with the chemical formula CsCl and a molecular weight of 168.36. It is a colorless cubic crystal that is easily soluble in water, ethanol, and methanol, but insoluble in acetone. It absorbs moisture and deliquesces in the air. Cesium chloride is dissolved in a solvent with cesium carbonate as the raw material solution to form a solution, and then the cesium chloride produced by the chemical reaction in the solution is extracted. When cesium chloride is centrifuged and extracted, a large amount of raw material solution will remain at the bottom of the centrifugal inner barrel after the raw material solution stops being added. These raw material solutions cannot continue to be centrifugally extracted, resulting in a waste of raw material solution; therefore, it does not meet the existing needs. In this regard, we propose a cesium chloride extraction and recovery device and method. Summary of the invention

[0003] The object of the present invention is to provide an extraction and recovery device and method for cesium chloride, so as to solve the problem that when cesium chloride is centrifugally extracted, after the raw material solution is stopped from being added, a large amount of raw material solution will remain at the bottom of the centrifugal inner barrel, and the raw material solution can no longer be centrifugally extracted, resulting in waste of raw material solution.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a cesium chloride extraction and recovery device, comprising a body, a first discharge pipe, a second discharge pipe and two feed pipes are fixed on the outside of the body, a centrifugal motor is fixed on the top of the body, a centrifugal inner barrel is rotatably installed inside the body, the output shaft end of the centrifugal motor passes through the body and is fixed to the top of the centrifugal inner barrel, a liquid discharge bin is provided between the centrifugal inner barrel and the body, a first liquid discharge flow channel and a second material discharge flow channel are provided on the top of the centrifugal inner barrel, a first material discharge ring channel and a second material discharge ring channel are provided between the top of the centrifugal inner barrel and the body, the first discharge pipe is installed at the outlet of the first discharge ring channel, the second discharge pipe is installed at the outlet of the second discharge ring channel, the first liquid discharge flow channel is connected to the first discharge ring channel, the second discharge flow channel is connected to the second discharge ring channel, the centrifugal inner A feed port is provided at the bottom end of the barrel, a connecting rod is fixed inside the centrifugal inner barrel, a connecting plate is fixed at the bottom end of the connecting rod, two L-shaped support rods are fixed to the bottom surface of the connecting plate, the bottom ends of the two L-shaped support rods are fixed to the inner wall of the feed port at the bottom end of the centrifugal inner barrel, a lifting ring is slidably installed on the inner side of the centrifugal inner barrel, a through hole is provided in the middle of the lifting ring, the diameter of the through hole is greater than or equal to the outer diameter of the connecting plate, two symmetrically distributed waterproof electric telescopic rods are symmetrically fixed inside the lifting ring, sealing plates are fixed at the movable ends of the two waterproof electric telescopic rods, the sealing plates are located on the inner side of the through hole and are slidably connected to the lifting ring, a positioning groove is provided in the middle of the opposite ends of the two sealing plates, and the diameter of the positioning groove matches the outer diameter of the connecting rod.

[0005] Preferably, a lifting motor is fixed inside the connecting rod, a lifting screw is fixed to the output shaft end of the lifting motor, the end of the lifting screw is rotatably connected to the connecting rod, a lifting slider is sleeved on the outer side of the lifting screw, connecting ropes are fixed on both sides of the lifting slider, and one end of the connecting rope passes through the connecting rod and is fixedly connected to the lifting ring.

[0006] Preferably, the lifting slider is located on the inner side of the connecting rod and is slidably connected to the connecting rod, and the lifting slider and the lifting screw rod are driven by threads.

[0007] Preferably, both sides of the top end of the connecting rod are provided with through openings, sealing rings are detachably installed at the openings, and one end of the connecting rope connected to the lifting slider passes through the opening.

[0008] Preferably, a supporting pulley is provided below the connecting rope and close to the lifting slider, an axle pin is fixed through the middle of the supporting pulley, and both ends of the axle pin are rotatably inserted into the inside of the connecting rod.

[0009] Preferably, liquid return holes are provided on both sides of the bottom end of the connecting rod, and an electromagnetic one-way valve is provided inside the bottom end of the liquid return hole.

[0010] Preferably, a connecting ring is rotatably mounted on the outer side of the top end of the centrifugal inner barrel, and a fixing plate is fixed between the connecting ring and the body.

[0011] Preferably, a micro water pump is installed below the fixing plate, the micro water pump is fixed on the inner wall of the machine body, a liquid return pipe is fixed at the outlet of the micro water pump, and an extraction pipe is fixed at the inlet of the micro water pump.

[0012] Preferably, the liquid return pipe is arranged to penetrate the connecting ring and the end of the liquid return pipe is flush with the side wall of the connecting ring, and the bottom end of the extraction pipe is close to the bottom surface of the machine body.

[0013] The extraction method using the cesium chloride extraction and recovery device as described above comprises the following steps:

[0014] S1. Turn on the power of the device, inject the raw material solution to be extracted into the liquid outlet bin through the feed pipe, and the raw material solution enters the centrifugal inner barrel from the bottom of the centrifugal inner barrel;

[0015] S2, the centrifugal motor is powered on and starts to drive the centrifugal inner barrel to rotate, and the centrifugal inner barrel performs centrifugal extraction on the raw material solution;

[0016] S3, the raw material solution is separated into a light phase solution and a heavy phase solvent after centrifugal extraction;

[0017] S4, the light phase solution enters the second discharge channel through the second discharge channel and leaves the machine body from the second discharge pipe, and the heavy phase solution enters the first discharge channel through the first discharge channel and leaves the machine body from the first discharge pipe;

[0018] S5. After all the raw material solutions are injected, the lifting motor is started, and the lifting slider is driven downward by the lifting motor. The lifting slider pulls the lifting ring upward through the connecting rope until the bottom surface of the sealing plate is flush with the upper surface of the connecting plate;

[0019] S6, then the waterproof electric telescopic rod is started and pushes the sealing plate to move, so that the two sealing plates contact each other and fit the connecting rod;

[0020] S7, the micro water pump is powered on and started, the micro water pump extracts the raw material solution accumulated at the bottom of the liquid outlet bin through the extraction pipe, and injects the raw material solution into the centrifugal inner barrel through the return pipe;

[0021] S8, the raw material solution is injected into the centrifugal inner barrel. Since the lifting ring and the sealing plate seal the bottom of the centrifugal inner barrel, the raw material solution cannot return from the centrifugal inner barrel to the liquid outlet bin;

[0022] S9, the centrifugal motor continues to drive the centrifugal inner barrel to rotate and centrifugally extract the raw material solution. During the extraction process, the lifting slider continues to move downward, and the lifting ring is slowly pulled upward by the connecting rope;

[0023] S10, the lifting ring slowly moves upward to slowly push the raw material solution in the centrifugal inner barrel upward, and the light phase solution and the heavy phase solvent after the raw material solution is centrifugally extracted leave the machine body through the second discharge pipe and the first discharge pipe respectively, and the raw material solution is completely extracted.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention moves the lifting slider downward along the lifting screw rod to pull the lifting ring and the sealing plate upward, so that the bottom surface of the sealing plate is flush with the bottom surface of the connecting plate, and then uses the waterproof electric telescopic rod to push the sealing plate to contact the connecting rod, so that the two lifting rings and the sealing plate seal the bottom of the centrifugal inner barrel, and then uses a micro water pump, an extraction pipe, and a liquid return pipe to extract the raw material solution remaining at the bottom of the liquid outlet bin and inject it into the centrifugal inner barrel, and continue to start the centrifugal motor. During the process of the centrifugal motor driving the centrifugal inner barrel to rotate, the lifting slider slowly pulls the lifting ring and the sealing plate upward through the connecting rope, and slowly transports the raw material solution in the centrifugal inner barrel upward, ensuring that the raw material solution is converted into a light phase solution and a heavy phase solvent and is discharged outwardly through the first liquid outlet channel, the second material outlet channel, the second material outlet pipe, and the first material outlet pipe, and all the raw material solutions are centrifugally extracted to avoid unnecessary waste caused by the raw material solution remaining at the bottom of the liquid outlet bin.

[0026] 2. The present invention fixes a micro water pump in the inner wall of the body, and uses the micro water pump, extraction pipe, and liquid return pipe to inject all the raw material solution in the liquid outlet bin into the centrifugal inner barrel, thereby preventing the raw material solution from remaining in the liquid outlet bin and being unable to perform centrifugal extraction, thereby avoiding waste of the raw material solution. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 A cross-sectional view of the present invention as a whole;

[0029] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0030] Figure 4 for Figure 2 A magnified view of the structure at B in the middle;

[0031] Figure 5 for Figure 2 A magnified view of the structure at C in the middle;

[0032] Figure 6 It is a structural schematic diagram of the lifting ring of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the sealing plate of the present invention.

[0034] In the figure: 1. body; 2. feed pipe; 3. first discharge pipe; 4. second discharge pipe; 5. centrifugal motor; 6. centrifugal inner barrel; 7. first discharge channel; 8. second discharge channel; 9. first liquid discharge channel; 10. second liquid discharge channel; 11. liquid discharge bin; 12. connecting rod; 13. connecting plate; 14. connecting rope; 15. lifting motor; 16. lifting screw rod; 17. lifting slider; 18. lifting ring; 19. supporting pulley; 20. sealing ring; 21. connecting ring; 22. fixing plate; 23. micro water pump; 24. extraction pipe; 25. return liquid hole; 26. sealing plate; 27. L-shaped support rod; 28. positioning groove; 29. ​​waterproof electric telescopic rod; 30. return liquid pipe. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] The centrifugal motor (model 130ST-M15025), lifting motor (model 5IK60RGN-CF), micro water pump (model AM555ZSB) and waterproof electric telescopic rod (model ZWMD0023) mentioned in the present invention can all be purchased from the market or obtained through private customization.

[0037] like Figure 1 and Figure 2 As shown, a cesium chloride extraction and recovery device comprises a body 1, a first discharge pipe 3, a second discharge pipe 4 and two feed pipes 2 are fixed on the outside of the body 1, a centrifugal motor 5 is fixed on the top of the body 1, a centrifugal inner barrel 6 is rotatably installed inside the body 1, the output shaft end of the centrifugal motor 5 passes through the body 1 and is fixed to the top of the centrifugal inner barrel 6, a liquid outlet bin 11 is provided between the centrifugal inner barrel 6 and the body 1, a first liquid outlet flow channel 9 and a second discharge flow channel 10 are provided on the top of the centrifugal inner barrel 6, and a first discharge loop 7 and a second discharge loop 10 are provided between the top of the centrifugal inner barrel 6 and the body 1 A discharge ring channel 8, a first discharge pipe 3 is installed at the outlet of the first discharge ring channel 7, a second discharge pipe 4 is installed at the outlet of the second discharge ring channel 8, a first liquid discharge channel 9 is connected to the first discharge ring channel 7, a second discharge channel 10 is connected to the second discharge ring channel 8, a feed port is provided at the bottom end of the centrifugal inner barrel 6, a connecting rod 12 is fixed inside the centrifugal inner barrel 6, a connecting plate 13 is fixed at the bottom end of the connecting rod 12, two L-shaped support rods 27 are fixed to the bottom surface of the connecting plate 13, and the bottom ends of the two L-shaped support rods 27 are fixed to the inner wall of the feed port at the bottom end of the centrifugal inner barrel 6.

[0038] like Figures 2 to 7As shown, a lifting ring 18 is slidably installed on the inner side of the centrifugal inner barrel 6, and a through hole is penetrated in the middle of the lifting ring 18, and the diameter of the through hole is greater than or equal to the outer diameter of the connecting plate 13. Two symmetrically distributed waterproof electric telescopic rods 29 are symmetrically fixed inside the lifting ring 18, and the movable ends of the two waterproof electric telescopic rods 29 are fixed with sealing plates 26, which are located on the inner side of the through hole and are slidably connected to the lifting ring 18. A positioning groove 28 is provided in the middle of the opposite ends of the two sealing plates 26, and the diameter of the positioning groove 28 matches the outer diameter of the connecting rod 12. The sealing plate 26 is pushed to move by the waterproof electric telescopic rod 29, so that the two sealing plates 26 seal and clamp the connecting rod 12, and then the lifting ring 18 drives the two sealing plates 26 to move upward in the centrifugal inner barrel 6, and the raw material solution remaining at the bottom of the centrifugal inner barrel 6 is transported to the top of the centrifugal inner barrel 6, so that the raw material solution continues to be centrifugally extracted to avoid waste of the raw material solution.

[0039] A lifting motor 15 is fixed inside the connecting rod 12, and a lifting screw 16 is fixed to the output shaft end of the lifting motor 15. The end of the lifting screw 16 is rotatably connected to the connecting rod 12, and a lifting slider 17 is sleeved on the outside of the lifting screw 16. Connecting ropes 14 are fixed on both sides of the lifting slider 17. One end of the connecting rope 14 passes through the connecting rod 12 and is fixedly connected to the lifting ring 18. The lifting slider 17 is slidably connected to the connecting rod 12 on the inner side of the connecting rod 12. The lifting slider 17 and the lifting screw 16 are transmitted by threads. The lifting motor 15 drives the lifting screw 16 to rotate, so that the lifting slider 17 moves down or up along the axis of the lifting screw 16. The lifting ring 18 is pulled by the connecting rope 14 to realize the upward or downward movement of the lifting ring 18 and the sealing plate 26.

[0040] Both sides of the top of the connecting rod 12 are provided with through openings, and sealing rings 20 are detachably installed at the openings. One end of the connecting rope 14 connected to the lifting slider 17 passes through the opening, and a supporting pulley 19 is provided below the connecting rope 14 and close to the lifting slider 17. An axle pin is fixed through the middle of the supporting pulley 19, and both ends of the axle pin are rotatably inserted into the inside of the connecting rod 12. The supporting pulley 19 is used to provide rolling support for the connecting rope 14 to avoid friction between the connecting rope 14 and the connecting rod 12 during the pulling process, and the sealing ring 20 can ensure that the raw material solution in the centrifugal inner barrel 6 will not enter the inside of the connecting rod 12.

[0041] A connecting ring 21 is rotatably installed on the outer side of the top of the centrifugal inner barrel 6, a fixing plate 22 is fixed between the connecting ring 21 and the body 1, a micro water pump 23 is installed below the fixing plate 22, the micro water pump 23 is fixed on the inner wall of the body 1, a return pipe 30 is fixed at the outlet of the micro water pump 23, an extraction pipe 24 is fixed at the inlet of the micro water pump 23, the return pipe 30 runs through the connecting ring 21 and the end of the return pipe 30 is flush with the side wall of the connecting ring 21, the bottom end of the extraction pipe 24 is close to the bottom surface of the body 1, the micro water pump 23 is used to extract the raw material solution accumulated at the bottom of the liquid outlet bin 11, and the raw material solution is transported into the centrifugal inner barrel 6 through the extraction pipe 24.

[0042] Liquid return holes 25 are provided on both sides of the bottom end of the connecting rod 12 . An electromagnetic one-way valve is provided inside the bottom end of the liquid return hole 25 . The raw material solution accidentally entering the inside of the connecting rod 12 is returned to the centrifugal inner barrel 6 through the liquid return hole 25 .

[0043] Working principle: First, the extraction raw material solution is continuously added to the liquid outlet bin 11 through the feed pipe 2, and then the device power is turned on and started, the centrifugal motor 5 is powered on to drive the centrifugal inner barrel 6 to rotate at high speed, and the centrifugal inner barrel 6 rotating at high speed performs centrifugal extraction on the raw material solution, so that the raw material solution is divided into a light phase solution and a heavy phase solvent, and the light phase solution enters the second discharge channel 8 through the second discharge channel 10 and leaves the body 1 from the second discharge pipe 4, and the heavy phase solution enters the first discharge channel 7 through the first discharge channel 9 and leaves the body 1 from the first discharge pipe 3, until all the raw material solution is added into the liquid outlet bin 11;

[0044] When the first discharge pipe 3 and the second discharge pipe 4 stop discharging liquid, a certain amount of raw material solution will remain at the bottom of the liquid discharge bin 11 and the centrifugal inner barrel 6. These raw material solutions cannot be extracted because they cannot contact the first discharge flow channel 9 and the second discharge flow channel 10. The centrifugal motor 5 stops moving, and then the lifting motor 15 is started and the lifting slider 17 is driven to move downward by the lifting motor 15. The lifting slider 17 pulls the lifting ring 18 upward through the connecting rope 14 until the bottom surface of the sealing plate 26 is flush with the upper surface of the connecting plate 13. The waterproof electric telescopic rod 29 is started and pushes the sealing plate 26 to move, so that the two sealing plates 26 contact each other and fit the connecting rod 12. At this time, the lifting motor 15 is stopped and the micro water pump 23 is started. The micro water pump 23 extracts the raw material solution accumulated at the bottom of the liquid discharge bin 11 through the extraction pipe 24, and injects the raw material solution into the centrifugal inner barrel 6 through the return pipe 30 until all the raw material solution at the bottom of the liquid discharge bin 11 enters the centrifugal inner barrel 6.

[0045] Next, continue to start the centrifugal motor 5, the centrifugal motor 5 drives the centrifugal inner barrel 6 to continue the centrifugal extraction operation, and at the same time the lifting motor 15 continues to start and drives the lifting slider 17 to move through the lifting screw 16. At this time, the lifting slider 17 slides downward along the axial direction of the lifting screw 16 inside the connecting rod 12, and the lifting slider 17 slowly pulls the lifting ring 18 upward through the connecting rope 14 when moving downward. The slowly moving lifting ring 18 and the sealing plate 26 slide against the inner wall of the centrifugal inner barrel 6 and the outer surface of the connecting rod 12, and the raw material solution in the centrifugal inner barrel 6 is slowly transported upward to ensure that the light phase solution and the heavy phase solvent produced by the centrifugal extraction of the raw material solution are in contact with the first liquid outlet channel 9 and the second material outlet channel 10, and are discharged outwardly through the second discharge pipe 4 and the first discharge pipe 3, and all the raw material solution is centrifugally extracted to avoid unnecessary waste caused by the raw material solution remaining at the bottom of the liquid outlet bin 11.

[0046] The extraction method using the cesium chloride extraction and recovery device as described above comprises the following steps:

[0047] S1, turn on the power of the device, inject the raw material solution to be extracted into the liquid outlet bin 11 through the feed pipe 2, and the raw material solution enters the centrifugal inner barrel 6 from the bottom of the centrifugal inner barrel 6;

[0048] S2, the centrifugal motor 5 is powered on and starts to drive the centrifugal inner barrel 6 to rotate, and the centrifugal inner barrel 6 performs centrifugal extraction on the raw material solution;

[0049] S3, the raw material solution is separated into a light phase solution and a heavy phase solvent after centrifugal extraction;

[0050] S4, the light phase solution enters the second discharge channel 8 through the second discharge channel 10 and leaves the body 1 from the second discharge pipe 4, and the heavy phase solution enters the first discharge channel 7 through the first discharge channel 9 and leaves the body 1 from the first discharge pipe 3;

[0051] S5. After all the raw material solutions are injected, the lifting motor 15 is started, and the lifting slider 17 is driven downward by the lifting motor 15. The lifting slider 17 pulls the lifting ring 18 upward through the connecting rope 14 until the bottom surface of the sealing plate 26 is flush with the upper surface of the connecting plate 13.

[0052] S6, then the waterproof electric telescopic rod 29 is started and pushes the sealing plate 26 to move, so that the two sealing plates 26 contact each other and fit the connecting rod 12;

[0053] S7, the micro water pump 23 is powered on and started, the micro water pump 23 extracts the raw material solution accumulated at the bottom of the liquid outlet bin 11 through the extraction pipe 24, and injects the raw material solution into the centrifugal inner barrel 6 through the liquid return pipe 30;

[0054] S8, the raw material solution is injected into the centrifugal inner barrel 6. Since the lifting ring 18 and the sealing plate 26 seal the bottom end of the centrifugal inner barrel 6, the raw material solution cannot return from the centrifugal inner barrel 6 to the liquid outlet bin 11;

[0055] S9, the centrifugal motor 5 continues to drive the centrifugal inner barrel 6 to rotate and centrifugally extract the raw material solution. During the extraction process, the lifting slider 17 continues to move downward, and the lifting ring 18 is slowly pulled upward through the connecting rope 14;

[0056] S10, the lifting ring 18 slowly moves upward to push the raw material solution in the centrifugal inner barrel 6 upward slowly, and the light phase solution and the heavy phase solvent after the raw material solution is centrifugally extracted leave the body 1 through the second discharge pipe 4 and the first discharge pipe 3 respectively, and the raw material solution is completely extracted.

[0057] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cesium chloride extraction and recovery device, comprising a body (1), a first discharge pipe (3), a second discharge pipe (4) and two feed pipes (2) are fixed on the outside of the body (1), a centrifugal motor (5) is fixed on the top of the body (1), a centrifugal inner barrel (6) is rotatably mounted inside the body (1), an output shaft end of the centrifugal motor (5) passes through the body (1) and is fixed to the top of the centrifugal inner barrel (6), a liquid outlet bin (11) is provided between the centrifugal inner barrel (6) and the body (1), and a centrifugal inner barrel (6) is provided at the top of the centrifugal inner barrel (6). A first liquid discharge channel (9) and a second material discharge channel (10) are provided at the end of the centrifugal inner barrel (6), a first material discharge channel (7) and a second material discharge channel (8) are provided between the top end of the centrifugal inner barrel (6) and the machine body (1), the first material discharge pipe (3) is installed at the outlet of the first material discharge channel (7), the second material discharge pipe (4) is installed at the outlet of the second material discharge channel (8), the first liquid discharge channel (9) is connected to the first material discharge channel (7), and the second material discharge channel (10) is connected to the second material discharge channel (8), characterized in that: A feed port is provided at the bottom end of the centrifugal inner barrel (6); a connecting rod (12) is fixed inside the centrifugal inner barrel (6); a connecting plate (13) is fixed at the bottom end of the connecting rod (12); two L-shaped support rods (27) are fixed to the bottom surface of the connecting plate (13); the bottom ends of the two L-shaped support rods (27) are fixed to the inner wall of the feed port at the bottom end of the centrifugal inner barrel (6); a lifting ring (18) is slidably mounted on the inner side of the centrifugal inner barrel (6); a through hole is provided in the middle of the lifting ring (18); and the through hole is provided in the middle of the lifting ring (18). The diameter of the hole is greater than or equal to the outer diameter of the connecting plate (13); two symmetrically distributed waterproof electric telescopic rods (29) are symmetrically fixed inside the lifting ring (18); the movable ends of the two waterproof electric telescopic rods (29) are fixed with sealing plates (26); the sealing plates (26) are located inside the through hole and are slidably connected to the lifting ring (18); a positioning groove (28) is provided in the middle of the opposite ends of the two sealing plates (26); the diameter of the positioning groove (28) matches the outer diameter of the connecting rod (12).

2. A cesium chloride extraction and recovery device according to claim 1, characterized in that: A lifting motor (15) is fixed inside the connecting rod (12), a lifting screw (16) is fixed to the output shaft end of the lifting motor (15), the end of the lifting screw (16) is rotatably connected to the connecting rod (12), a lifting slider (17) is sleeved on the outer side of the lifting screw (16), connecting ropes (14) are fixed on both sides of the lifting slider (17), and one end of the connecting rope (14) passes through the connecting rod (12) and is fixedly connected to the lifting ring (18).

3. A cesium chloride extraction and recovery device according to claim 2, characterized in that: The lifting slider (17) is located on the inner side of the connecting rod (12) and is slidably connected to the connecting rod (12). The lifting slider (17) and the lifting screw rod (16) are driven by threads.

4. The cesium chloride extraction and recovery device according to claim 3, characterized in that: Both sides of the top end of the connecting rod (12) are provided with through openings, and sealing rings (20) are detachably installed at the openings. One end of the connecting rope (14) connected to the lifting slider (17) passes through the openings.

5. A cesium chloride extraction and recovery device according to claim 4, characterized in that: A support pulley (19) is provided below the connecting rope (14) and close to the lifting slider (17). An axle pin is fixed through the middle of the support pulley (19). Both ends of the axle pin are rotatably inserted into the interior of the connecting rod (12).

6. The cesium chloride extraction and recovery device according to claim 5, characterized in that: Liquid return holes (25) are provided on both sides of the bottom end of the connecting rod (12), and an electromagnetic one-way valve is provided inside the bottom end of the liquid return hole (25).

7. The cesium chloride extraction and recovery device according to claim 6, characterized in that: A connecting ring (21) is rotatably mounted on the outer side of the top end of the centrifugal inner barrel (6), and a fixing plate (22) is fixed between the connecting ring (21) and the machine body (1).

8. The cesium chloride extraction and recovery device according to claim 7, characterized in that: A micro water pump (23) is installed below the fixing plate (22), the micro water pump (23) is fixed on the inner wall of the machine body (1), a liquid return pipe (30) is fixed at the outlet of the micro water pump (23), and an extraction pipe (24) is fixed at the inlet of the micro water pump (23).

9. The cesium chloride extraction and recovery device according to claim 8, characterized in that: The liquid return pipe (30) is arranged to penetrate the connecting ring (21) and the end of the liquid return pipe (30) is flush with the side wall of the connecting ring (21), and the bottom end of the extraction pipe (24) is close to the bottom surface of the machine body (1).

10. An extraction method using the cesium chloride extraction and recovery device as claimed in claim 9, characterized in that: The following steps are involved: S1. Turn on the power of the device, inject the raw material solution to be extracted into the liquid outlet bin (11) through the feed pipe (2), and the raw material solution enters the centrifugal inner barrel (6) from the feed port at the bottom of the centrifugal inner barrel (6); S2, the centrifugal motor (5) is powered on and starts to drive the centrifugal inner barrel (6) to rotate, and the centrifugal inner barrel (6) performs centrifugal extraction on the raw material solution; S3, the raw material solution is separated into a light phase solution and a heavy phase solvent after centrifugal extraction; S4, the light phase solution enters the second discharge channel (8) through the second discharge channel (10) and leaves the machine body (1) from the second discharge pipe (4), and the heavy phase solution enters the first discharge channel (7) through the first discharge channel (9) and leaves the machine body (1) from the first discharge pipe (3); S5. After all the raw material solutions have been injected, the lifting motor (15) is started, and the lifting slider (17) is driven downward by the lifting motor (15). The lifting slider (17) pulls the lifting ring (18) upward through the connecting rope (14) until the bottom surface of the sealing plate (26) is flush with the upper surface of the connecting plate (13); S6, then the waterproof electric telescopic rod (29) is started and pushes the sealing plate (26) to move, so that the two sealing plates (26) contact each other and fit with the connecting rod (12); S7, the micro water pump (23) is powered on and started, the micro water pump (23) extracts the raw material solution accumulated at the bottom of the liquid outlet bin (11) through the extraction pipe (24), and injects the raw material solution into the centrifugal inner barrel (6) through the liquid return pipe (30); S8, the raw material solution is injected into the centrifugal inner barrel (6), and because the lifting ring (18) and the sealing plate (26) seal the bottom end of the centrifugal inner barrel (6), the raw material solution cannot return from the centrifugal inner barrel (6) to the liquid outlet bin (11); S9, the centrifugal motor (5) continues to drive the centrifugal inner barrel (6) to rotate and centrifugally extract the raw material solution. During the extraction process, the lifting slider (17) continues to move downward, and the lifting ring (18) is pulled upward through the connecting rope (14); S10, the upwardly moving lifting ring (18) pushes the raw material solution in the centrifugal inner barrel (6) upward, and the light phase solution and the heavy phase solvent of the raw material solution after centrifugal extraction leave the machine body (1) through the second discharge pipe (4) and the first discharge pipe (3) respectively, and the raw material solution is completely extracted.

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