A centrifuge for crystallization

Abstract

The application belongs to the field of centrifuges, in particular to a crystallization centrifuge, which comprises a base, a shell and a driving motor fixed to the top side of the base, a distributor and a hydraulic scraper fixed to the top of the shell, a feeding pipe fixed to the top of the shell, a discharging cylinder fixed to the bottom center of the shell, a bearing seat fixed to the middle of the discharging cylinder, and a main shaft rotatably connected to the bearing seat, wherein a hydraulic cylinder, a push plate, a guide rod, a limiting plate and an annular plate are arranged, and after the material is scraped by the hydraulic scraper, the push plate is moved upward by the hydraulic cylinder, the guide rod is moved upward by the push plate, the annular plate is moved upward by the guide rod, the filter cloth is folded and stacked upward, the residual dithioformic material on the surface of the filter cloth is crushed, the residual dithioformic material on the filter cloth is stripped, and the influence of the residual material on the water permeability is reduced.

Description

Technical Field

[0001] This invention relates to the field of centrifuges, specifically a crystallization centrifuge. Background Technology

[0002] A crystallization centrifuge is a mechanical device that uses centrifugal force to separate liquids and solid particles that crystallize within the liquid. It is generally classified into filtration centrifuges and sedimentation centrifuges according to the separation method.

[0003] In current technologies, during the preparation of dithiourea, the dithiourea crystals after cooling and crystallization are mixed in the material solution. Workers use a crystallization centrifuge to separate the dithiourea crystals from the mother liquor. The crystallization centrifuge mainly consists of a drive mechanism, a rotating drum, a hydraulic scraper, and a distributor. The material solution is injected into the distributor through the feed pipe, and the distributor distributes the material solution evenly inside the rotating drum. The drive mechanism drives the rotating drum to rotate at high speed, and the centrifugal force causes the solid dithiourea to remain on the inner wall of the rotating drum. Then, the hydraulic cylinder on the hydraulic scraper drives the scraper to move downward to scrape off the dithiourea crystals inside the rotating drum, thus completing the separation of dithiourea.

[0004] However, when feeding materials into the centrifuge, in order to avoid damaging the inner wall of the drum, the scraper needs to maintain a certain distance from the inside of the drum, which results in a material layer remaining on the inner wall of the drum. This residual material layer will affect the permeability. Therefore, a crystallization centrifuge is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A crystallization centrifuge of this invention includes a base; a shell and a drive motor are fixedly connected to the top side of the base; a distributor and a hydraulic scraper are fixedly connected to the top of the shell; a feed pipe is fixedly connected to the top of the shell; a discharge cylinder is fixedly connected to the center of the bottom of the shell; a bearing seat is fixedly connected to the middle of the discharge cylinder; a main shaft is rotatably connected inside the bearing seat; a belt is installed between the output end of the drive motor and the main shaft; a connecting cylinder is fixedly connected to the top of the main shaft; a rotating drum is fixedly connected to the top of the connecting cylinder; a filter cloth is fixedly connected to the inner side wall of the top of the rotating drum; an annular plate is fixedly connected to the bottom of the filter cloth; multiple guide rods are fixedly connected to the bottom side of the annular plate; the guide rods penetrate the bottom wall of the rotating drum and are slidably connected to it; multiple hydraulic cylinders are fixedly connected to the bottom of the shell; a push plate is fixedly connected to the top of the hydraulic cylinders. Based on the above configuration, the annular plate moves upward, causing the filter cloth to deform, thereby breaking and peeling off the residual dithiourea material on the filter cloth, thus reducing the impact of the residual material on water permeability.

[0007] Preferably, a limiting plate is fixedly connected to the bottom of the guide rod; a spring is fixedly connected between the top side of the limiting plate and the drum; a fixed cylinder is fixedly connected to the bottom side of the drum; the guide rod passes through the fixed cylinder and is slidably connected to it; an annular groove is formed at the bottom of the guide rod; a set of grooves is formed on the inner side wall of the fixed cylinder; a fixing spring is fixedly connected to the side wall of the groove, and the filter cloth is quickly reset and pulled to shake off the dithiourea material on the filter cloth, thereby improving the cleaning effect of the material and reducing the adhesion of squeezed dithiourea material fragments to the filter cloth.

[0008] Preferably, a water tank is fixedly connected to the top side of the base; an electric heating wire is fixedly connected inside the water tank; a flexible tube is fixedly connected to the side of the water tank; a submersible pump is installed at one end of the flexible tube; a first annular tube is fixedly connected to the other end of the flexible tube; the first annular tube is fixedly connected to a push plate; multiple conveying pipes are fixedly connected to the outer wall of the drum; a nozzle is fixedly connected to the top of the conveying pipe; a water outlet groove is opened inside the nozzle; the nozzle is fixedly connected to the top of the drum; a second annular tube is fixedly connected to the bottom of the conveying pipe; a connecting sleeve is fixedly connected to the top of the first annular tube; a connecting pipe is fixedly connected to the bottom of the second annular tube; a positioning component is provided at the bottom of the drum; the positioning component is used to drive the drum to rotate so that the connecting pipe and the connecting sleeve are positioned and aligned. With the above settings, the filter cloth is washed with hot water, so that the small amount of residual dithiourea material dissolves into the hot water, thereby improving the cleaning effect of the filter cloth, reducing the impact of dithiourea clogging the filter cloth during material drying, and at the same time facilitating the use of the centrifuge to prepare other materials, reducing the pollution caused by dithiourea material residue.

[0009] Preferably, the positioning assembly includes an electric actuator; a connecting seat is fixedly connected to the bottom of the electric actuator; a positioning motor is fixedly connected to the middle of the connecting seat; a first gear is fixedly connected to the output end of the positioning motor; a second gear is fixedly connected to the bottom outer wall of the drum; a positioning rod is fixedly connected to the top side of the second gear; a baffle is fixedly connected to the side of the connecting seat at a position corresponding to the positioning rod. During use, this baffle is used to position and align the connecting pipe and the connecting cylinder, thereby facilitating the insertion of the connecting pipe into the connecting cylinder and reducing the possibility of hot water leakage at the connection point.

[0010] Preferably, an air inlet shroud is fixedly connected to the bottom of the bearing housing; a fan blade is fixedly connected to the bottom of the main shaft; the fan blade is located inside the air inlet shroud; multiple connecting pipes are fixedly connected to the top of the air inlet shroud; a third annular pipe is fixedly connected to the top of the connecting pipe; a set of cooling pipes is fixedly connected to the third annular pipe; a set of air outlet grooves are opened in the wall of the cooling pipe; the cooling pipe penetrates the housing and is fixedly connected to it. In use, the airflow can cool and reduce the temperature of the high-speed rotating drum and connecting cylinder, thereby reducing the possibility of dithiourea re-incorporating into the material solution due to temperature rise.

[0011] Preferably, a cooling tank is fixedly connected to the top of the shell; a pipe is fixedly connected to the bottom of the cooling tank; the end of the pipe away from the cooling tank is fixedly connected to the feed pipe; a valve is installed on the pipe; an air supply pipe is fixedly connected to the side of the third annular pipe; an air guide shroud is fixedly connected to the top of the air supply pipe; the air guide shroud is fixedly connected to the wall of the cooling tank; a uniform distribution plate is fixedly connected to the top of the air guide shroud; a set of fins is fixedly connected to the wall of the cooling tank, which is injected into the feed pipe through the pipe and then separated again by the rotating drum and filter cloth, thereby separating the dithiourea material in the washing hot water and reducing material waste.

[0012] Preferably, the bottom of the air intake hood is bolted to a hood body; the side of the hood body is fixedly connected to an air intake pipe; the top of the hood body is fixedly connected to a filter screen plate; the main shaft passes through the filter screen plate and is rotatably connected to it. By setting the filter screen, the intake air can be filtered, thereby reducing the possibility of blockage in the subsequent pipeline.

[0013] Preferably, a pair of elastic ropes are symmetrically fixed to the inner sidewall of the water outlet tank; a vibrating plate is fixed between the pair of elastic ropes, and the vibration of the vibrating plate can disturb the water flow, thereby increasing the spray area and improving the washing effect on the filter cloth.

[0014] Preferably, the inner wall of the connecting cylinder has a receiving cavity; a spring telescopic rod is fixedly connected to the top side of the receiving cavity; a ring is fixedly connected to the bottom end of the spring telescopic rod; an elastic sleeve is fixedly connected to the top side of the receiving cavity; the top of the elastic sleeve is fixedly connected to the annular plate. By setting the elastic sleeve, the annular plate and the connecting cylinder are connected and shielded, thereby reducing the entry of dithiourea material into the annular plate, thereby reducing the waste of residual material at this location, and reducing the contamination of other materials produced by the residual material at this location.

[0015] Preferably, the bottom of the ring is rotatably connected to multiple rollers; the multiple rollers are arranged in a circular array; a scraper is fixed to the bottom side of the storage cavity and rotates by means of the rollers, thereby reducing the friction between the ring and the elastic sleeve, thus facilitating the elastic sleeve to be pulled out of the storage groove.

[0016] The advantages of this invention are:

[0017] 1. This invention, by setting up a hydraulic cylinder, a push plate, a guide rod, a limiting plate, and an annular plate, relies on the above-mentioned setup. After the hydraulic scraper removes the material, the hydraulic cylinder drives the push plate to move upward, the push plate drives the guide rod to move upward, and the guide rod pushes the annular plate to move upward, thereby causing the filter cloth to fold and stack upward, thereby squeezing and crushing the residual dithiourea material on the surface of the filter cloth, thus breaking and peeling off the residual dithiourea material on the filter cloth, thereby reducing the impact of the residual material on water permeability;

[0018] 2. This invention, by setting up a water tank, heating wire, first annular tube, second annular tube, flexible tube, water supply pipe, and nozzle, heats the water in the tank using the heating wire. Then, a submersible pump injects hot water into the first annular tube through the flexible tube. The hot water is then sprayed downwards from the nozzle through the second annular tube and the supply pipe. Since dithiourea is slightly soluble in hot water, shaking the filter cloth removes most of the dithiourea. The filter cloth is then washed with hot water, dissolving any remaining small amount of dithiourea. This improves the cleaning effect on the filter cloth, reduces the impact of dithiourea clogging the filter cloth during drying, and facilitates the use of the centrifuge for preparing other materials, minimizing contamination caused by residual dithiourea. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the housing structure of the present invention;

[0022] Figure 3 This is a schematic cross-sectional view of the drum structure of the present invention;

[0023] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0025] Figure 6 This is a schematic diagram of the cooling tank structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the nozzle structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the fixed cylinder structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the ring structure of the present invention.

[0029] In the diagram: 11. Base; 12. Housing; 13. Distributor; 14. Hydraulic scraper; 15. Feed pipe; 16. Main shaft; 17. Connecting cylinder; 18. Hydraulic cylinder; 19. Drum; 191. Filter cloth; 192. Annular plate; 193. Guide rod; 194. Push plate; 21. Fixed cylinder; 22. Fixed spring; 23. Annular groove; 31. Water tank; 32. Flexible tube; 33. First annular tube; 34. Second annular tube; 35. Nozzle; 36. Connecting sleeve; 37. Connecting pipe; 4 1. Electric actuator; 42. Connecting seat; 44. Second gear; 45. Positioning rod; 46. Baffle; 51. Air inlet hood; 52. Third annular pipe; 53. Cooling pipe; 61. Cooling tank; 62. Air guide hood; 63. Pipe body; 64. Air delivery pipe; 65. Fin; 66. Distribution plate; 71. Cover body; 72. Air inlet pipe; 73. Filter screen; 81. Elastic rope; 82. Vibrating plate; 91. Elastic sleeve; 92. Ring body; 93. Spring telescopic rod; 101. Roller; 102. Scraper. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Specific implementation examples are given below. Example 1

[0032] Please see Figure 1-3As shown, a crystallization centrifuge includes a base 11; a housing 12 and a drive motor are fixedly connected to the top side of the base 11; a distributor 13 and a hydraulic scraper 14 are fixedly connected to the top of the housing 12; a feed pipe 15 is fixedly connected to the top of the housing 12; a discharge cylinder is fixedly connected to the center of the bottom of the housing 12; a bearing housing is fixedly connected to the middle of the discharge cylinder; a main shaft 16 is rotatably connected inside the bearing housing; a belt is installed between the output end of the drive motor and the main shaft 16; the main shaft 16... A connecting cylinder 17 is fixedly connected to the top of the housing 12; a rotating drum 19 is fixedly connected to the top of the connecting cylinder 17; a filter cloth 191 is fixedly connected to the inner side wall of the top of the rotating drum 19; an annular plate 192 is fixedly connected to the bottom of the filter cloth 191; multiple guide rods 193 are fixedly connected to the bottom side of the annular plate 192; the guide rods 193 penetrate the bottom wall of the rotating drum 19 and are slidably connected to it; multiple hydraulic cylinders 18 are fixedly connected to the bottom of the housing 12; a push plate 194 is fixedly connected to the top of the hydraulic cylinders 18; during use, the material... The solution is injected into the distributor 13 through the feed pipe 15. The distributor 13 then distributes the material evenly inside the drum 19. The drive motor drives the main shaft 16 and the drum 19 to rotate. Then, through centrifugal force and filter cloth 191, the dithiourea crystals in the material solution are separated. After the hydraulic scraper 14 scrapes off the material, the hydraulic cylinder 18 drives the push plate 194 to move upward. The push plate 194 drives the guide rod 193 to move upward, and the guide rod 193 pushes the annular plate 192 to move upward. This causes the filter cloths 191 to be stacked upwards, thereby crushing and removing the residual dithiourea material from the surface of the filter cloths 191. Then, the hydraulic cylinder 18 drives the push plate 194 to reset, and then the annular plate 192 pulls the filter cloths 191 downwards to reset. The above arrangement causes the annular plate 192 to move upwards, causing the filter cloths 191 to deform, thereby crushing and peeling off the residual dithiourea material on the filter cloths 191, thereby reducing the impact of the residual material on water permeability.

[0033] Furthermore, such as Figure 3 and 8As shown, a limiting plate is fixedly connected to the bottom of the guide rod 193; a spring is fixedly connected between the top side of the limiting plate and the rotating drum 19; a fixing cylinder 21 is fixedly connected to the bottom side of the rotating drum 19; the guide rod 193 passes through the fixing cylinder 21 and is slidably connected to it; an annular groove 23 is formed at the bottom of the guide rod 193; a set of grooves is formed on the inner side wall of the fixing cylinder 21; a fixing spring piece 22 is fixedly connected to the side wall of the groove; in use, the guide rod 193 moves upward, and when it moves to the top, the side of the fixing spring piece 22 will be engaged in the annular groove 23. This allows the guide rod 193 to be fixed. When the push plate 194 is reset, the fixing spring 22 will fix the guide rod 193 for a certain period of time. During the fixing process, the spring pushes the fixing spring 22 to continuously deform until the fixing spring 22 is completely deformed and comes out of the annular groove 23. Then the guide rod 193 is quickly reset under the push of the spring. The quick reset pulls the filter cloth 191, thereby shaking off the dithiourea material on the filter cloth 191. This can improve the cleaning effect of the material and reduce the adhesion of squeezed dithiourea material fragments to the filter cloth 191.

[0034] Furthermore, such as Figure 2-4As shown, a water tank 31 is fixedly connected to the top side of the base 11; an electric heating wire is fixedly connected inside the water tank 31; a flexible tube 32 is fixedly connected to the side of the water tank 31; a submersible pump is installed at one end of the flexible tube 32; a first annular tube 33 is fixedly connected to the other end of the flexible tube 32; the first annular tube 33 is fixedly connected to the push plate 194; multiple conveying pipes are fixedly connected to the outer wall of the drum 19; a nozzle 35 is fixedly connected to the top of the conveying pipe; a water outlet groove is opened inside the nozzle 35; The nozzle 35 is fixedly connected to the top of the drum 19; a second annular tube 34 is fixedly connected to the bottom of the conveying pipe; a connecting sleeve 36 is fixedly connected to the top of the first annular tube 33; a connecting pipe 37 is fixedly connected to the bottom of the second annular tube 34; a positioning component is provided at the bottom of the drum 19; the positioning component is used to drive the drum 19 to rotate so that the connecting pipe 37 and the connecting sleeve 36 are positioned and aligned; during use, after the filter cloth 191 is shaken, residues will remain on the filter cloth 191 mesh and surface. In this embodiment of the invention, when using dithiourea material, water is injected into the water tank 31 and heated by an electric heating wire. Then, hot water is injected into the first annular pipe 33 through a flexible pipe 32 by a submersible pump. When the push plate 194 moves upward, the connecting pipe 37 is inserted into the connecting sleeve 36, so that the first annular pipe 33 and the second annular pipe 34 are connected to each other. The connecting sleeve 36 is equipped with a sealing element that cooperates with the connecting pipe 37 for sealing. Hot water is sprayed from the nozzle 35 from top to bottom through the second annular pipe 34 and the conveying pipe. Dithiourea material is slightly soluble in hot water. The above structure causes the filter cloth 191 to shake off most of the dithiourea. Then, the filter cloth 191 is washed with hot water, so that the remaining small amount of dithiourea material dissolves into the hot water. This can improve the cleaning effect of the filter cloth 191, reduce the impact of dithiourea clogging the filter cloth 191 during material drying, and at the same time, it can facilitate the use of the centrifuge to prepare other materials, reducing the pollution caused by dithiourea material residue.

[0035] Furthermore, such as Figure 2-4As shown, the positioning assembly includes an electric push rod 41; a connecting seat 42 is fixedly connected to the bottom of the electric push rod 41; a positioning motor is fixedly connected to the middle of the connecting seat 42; a first gear is fixedly connected to the output end of the positioning motor; a second gear 44 is fixedly connected to the bottom outer wall of the drum 19; a positioning rod 45 is fixedly connected to the top side of the second gear 44; a baffle 46 is fixedly connected to the side of the connecting seat 42 at a position corresponding to the positioning rod 45; in use, after the dithiourea material has been centrifuged and dehydrated, the electric push rod 41 is started, and the electric push rod 41 drives the connecting seat 42 to move the first gear downward. During the movement, the positioning motor drives the first gear to rotate slowly until the teeth of the first gear and the second gear 44 correspond. After the teeth correspond, the electric push rod can drive the first gear to rotate. The wheel continues to move downwards, causing the first gear to mesh with the second gear 44. The positioning motor, a servo motor, drives the first gear to rotate. The rotation of the first gear causes the drum 19 to rotate slowly. During the rotation, the positioning rod 45 contacts the baffle 46. The housing 12 is equipped with an observation window. By observing and listening to the collision sound, the positioning motor is controlled to stop working, thereby rotating the connecting pipe 37 to a fixed position. This allows the connecting pipe 37 and the connecting sleeve 36 to be positioned and aligned, making it easier for the connecting pipe 37 to be inserted into the connecting sleeve 36 and reducing the possibility of hot water leakage at the connection. After rinsing, the electric push rod 41 drives the connecting seat 42 and the first gear to return to their original positions, causing the baffle 46 to separate from the positioning rod 45.

[0036] Furthermore, such as Figure 2-4 As shown, an air intake shroud 51 is fixedly connected to the bottom of the bearing housing; a fan blade is fixedly connected to the bottom of the main shaft 16; the fan blade is located inside the air intake shroud 51; multiple connecting pipes 37 are fixedly connected to the top of the air intake shroud 51; a third annular pipe 52 is fixedly connected to the top of the connecting pipes 37; a set of cooling pipes 53 are fixedly connected to the third annular pipe 52; a set of air outlet grooves are opened in the wall of the cooling pipes 53; the cooling pipes 53 penetrate the housing 12 and are fixedly connected to it; the cooling pipes 53 are L-shaped pipes; in use, the main shaft 16 drives the drum 19 to rotate at high speed, and friction will be generated during the high-speed rotation. The heat from the rotating drum 19 will cause the temperature of the material solution to rise, which in turn will cause the dithiourea in the material solution to dissolve. In this embodiment of the invention, the rotation of the main shaft 16 will drive the fan blades to rotate. The rotation of the fan blades will draw in air from the bottom of the air inlet shroud 51, and then inject it into the third annular pipe 52 through the connecting pipe 37. It will then be ejected from the air outlet groove on the cooling pipe 53. The airflow ejected from the air outlet groove can cool and lower the temperature of the high-speed rotating drum 19 and the connecting cylinder 17, thereby reducing the possibility of dithiourea re-incorporating into the material solution due to temperature rise.

[0037] Furthermore, such as Figure 2-3As shown in Figure 6, a cooling tank 61 is fixedly connected to the top of the shell 12; a pipe 63 is fixedly connected to the bottom of the cooling tank 61; one end of the pipe 63 away from the cooling tank 61 is fixedly connected to the feed pipe 15; a valve is installed on the pipe 63; an air supply pipe 64 is fixedly connected to the side of the third annular pipe 52; an air guide shroud 62 is fixedly connected to the top of the air supply pipe 64; the air guide shroud 62 is fixedly connected to the wall of the cooling tank 61; a uniform distribution plate 66 is fixedly connected to the top of the air guide shroud 62; a set of fins 65 is fixedly connected to the wall of the cooling tank 61; the cross-section of the fins 65 is designed with a wave-shaped structure; during use, the hot water containing dithiourea after washing is collected, and the collected hot water... The airflow is injected into the cooling tank 61. Then, part of the airflow in the third annular pipe 52 is injected into the top of the air guide shroud 62 through the air supply pipe 64. Then, under the action of the uniform distribution plate 66, the airflow is divided into multiple small airflows. The small airflows come into contact with the fins 65, thereby removing the temperature of the cooling tank 61 and the hot water. This causes the dithiourea dissolved in the hot water collected multiple times to recrystallize. Then, it can be injected into the feed pipe 15 through the pipe body 63. Then, it is separated again by the rotating drum 19 and the filter cloth 191. This separates the dithiourea material in the washing hot water, reducing the waste of material. The corrugated fins 65 are designed to increase the contact area with the airflow and hot water, thereby improving the heat transfer effect.

[0038] Furthermore, such as Figure 1-3 As shown, the bottom of the air intake hood 51 is bolted with a hood body 71; the side of the hood body 71 is fixedly connected with an air intake pipe 72; and the top of the hood body 71 is fixedly connected with a filter screen plate 73. The main shaft 16 passes through the filter screen plate 73 and is rotatably connected to it. In use, by setting up the hood body 71 and the air intake pipe 72, the air intake hood can be made to take in air from the side, thereby reducing the intake of dithiourea material during the air intake process. By setting up the filter screen, the intake air can be filtered, thereby reducing the possibility of blockage in the subsequent pipeline.

[0039] Furthermore, such as Figure 7 As shown, a pair of elastic ropes 81 are symmetrically fixed to the inner sidewall of the water outlet tank; a vibrating plate 82 is fixed between the pair of elastic ropes 81; during use, the impact of the hot water spray will cause the vibrating plate 82 to shake, and the shaking of the vibrating plate 82 can then disrupt the water flow, thereby increasing the spray area and improving the washing effect on the filter cloth 191.

[0040] Furthermore, such as Figure 5As shown, the inner wall of the connecting cylinder 17 has a receiving cavity; a spring telescopic rod 93 is fixedly connected to the top side of the receiving cavity; a ring 92 is fixedly connected to the bottom end of the spring telescopic rod 93; an elastic sleeve 91 is fixedly connected to the top side of the receiving cavity; the top of the elastic sleeve 91 is fixedly connected to the annular plate 192; in use, the elastic sleeve 91 connects and blocks the annular plate 192 and the connecting cylinder 17, thereby reducing the entry of dithiourea material into the annular plate 192, thus reducing the waste of residual material at this location, and reducing the contamination of other materials produced by the residual material at this location. The spring telescopic rod 93 pushes the ring 92 downward, thereby pulling and storing the elastic sleeve 91 into the receiving cavity. Example 2

[0041] like Figure 5 and 9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a plurality of rollers 101 are rotatably connected to the bottom of the ring 92; the plurality of rollers 101 are arranged in a ring array; a scraper 102 is fixedly connected to the bottom side of the receiving cavity; in use, the rollers 101 are rotated to reduce the friction between the ring 92 and the elastic sleeve 91, thereby facilitating the elastic sleeve 91 to be pulled out of the receiving groove; the scraper 102 can scrape off the material on the surface of the elastic sleeve 91, thereby reducing the amount of material entering the receiving cavity, thereby reducing the contamination of other materials produced by the residual dithiourea material in the receiving cavity, and reducing material waste.

[0042] Working principle: During use, the material solution is injected into the distributor 13 through the feed pipe 15. The distributor 13 then distributes the material evenly inside the rotating drum 19. A drive motor rotates the main shaft 16 and the rotating drum 19. Centrifugal force and the filter cloth 191 separate the crystallized dithiourea from the material solution. After the hydraulic scraper 14 scrapes off the material, the hydraulic cylinder 18 moves the push plate 194 upwards. The push plate 194 moves the guide rod 193 upwards, which in turn pushes the annular plate 192 upwards. This causes the filter cloth 191 to stack upwards, crushing and removing any remaining dithiourea material from the surface of the filter cloth 191. Finally, the hydraulic cylinder 18 moves the push plate 194 back to its original position. The rear annular plate 192 pulls the filter cloth 191 downwards to reset. The aforementioned configuration causes the annular plate 192 to move upwards, deforming the filter cloth 191 and breaking off any residual dithiourea material, thus reducing the impact of the residual material on water permeability. During use, the guide rod 193 moves upwards. When it reaches the top, the side of the fixing spring 22 engages with the annular groove 23, thus fixing the guide rod 193. After the push plate 194 resets, the fixing spring 22 holds the guide rod 193 in place for a certain period. During this process, the spring pushes, causing the fixing spring 22 to continuously deform until it is completely deformed and dislodged from the annular groove 23. Then, the guide rod 193 quickly resets under the spring's push. By rapidly resetting and pulling the filter cloth 191, the dithiourea material on the filter cloth 191 is shaken off, thereby improving the cleaning effect of the material and reducing the adhesion of squeezed dithiourea material fragments to the filter cloth 191. After shaking, dithiourea material will still remain on the filter cloth 191 mesh and surface. In this embodiment of the invention, clean water is injected into the water tank 31 and heated by an electric heating wire. Then, the hot water is injected into the first annular pipe 33 through the flexible pipe 32 by a submersible pump. When the push plate 194 moves upward, the connecting pipe 37 is inserted into the connecting sleeve 36, so that the first annular pipe 33 and the second annular pipe 34 are connected to each other. The connecting sleeve 36 is equipped with a sealing element that cooperates with the connecting pipe 37 for sealing. The hot water will pass through the first annular pipe 34 to the second annular pipe 36. The two-ring pipe 34 and the conveying pipe spray from the nozzle 35 downwards. The dithiourea material is slightly soluble in hot water. The above structure causes the filter cloth 191 to shake off most of the dithiourea. Then, the filter cloth 191 is washed with hot water to dissolve the remaining small amount of dithiourea material. This improves the cleaning effect of the filter cloth 191 and reduces the impact of dithiourea clogging the filter cloth 191 during drying. At the same time, it facilitates the use of the centrifuge to prepare other materials and reduces the pollution caused by dithiourea material residue. After the dithiourea material is centrifuged and dehydrated, the electric push rod 41 is activated. The electric push rod 41 drives the connecting seat 42 to move the first gear downwards and mesh with the second gear 44. Then, the positioning motor is controlled to drive the first gear to rotate. The positioning motor is a servo motor.The first gear rotates, causing the drum 19 to slowly rotate. During rotation, the positioning rod 45 contacts the baffle 46. An observation window is provided on the housing 12. By observing and listening to the collision sound, the positioning motor is stopped, thus rotating the connecting pipe 37 to a fixed position. This aligns the connecting pipe 37 and the connecting sleeve 36, facilitating the insertion of the connecting pipe 37 into the connecting sleeve 17 and reducing the risk of hot water leakage at the connection point. After rinsing, the electric push rod 41 drives the connecting seat 42 and the first gear upwards to reset, separating the baffle 46 from the positioning rod 45. The main shaft 16 then drives the drum 19 to rotate at high speed. During this high-speed rotation, friction generates heat, causing the temperature of the material solution to rise. The rising temperature causes the dithiourea in the material solution to dissolve. In this embodiment of the invention, the rotation of the main shaft 16 drives the fan blades to rotate, which in turn draws in air from the bottom of the air inlet shroud 51. This air is then injected into the third annular pipe 52 through the connecting pipe 37 and ejected from the air outlet groove on the cooling pipe 53. This airflow cools the high-speed rotating drum 19 and connecting cylinder 17, reducing their temperature and thus minimizing the possibility of dithiourea re-incorporating into the material solution due to temperature rise. During use, the hot water containing dithiourea after washing is collected and injected into the cooling tank 61. Then, a portion of the airflow in the third annular pipe 52 is injected into the top of the air guide shroud 62 through the air delivery pipe 64, and then... Under the action of the cloth plate 66, the airflow is divided into multiple small airflows. These small airflows contact the fins 65, thereby removing the temperature of the cooling tank 61 and the hot water. This causes the dithiourea dissolved in the repeatedly collected hot water to recrystallize, and then it can be injected into the feed pipe 15 through the pipe body 63. Then, it is separated again by the rotating drum 19 and the filter cloth 191, thus separating the dithiourea material in the washing hot water and reducing material waste. The corrugated fins 65 are designed to increase the contact area with the airflow and hot water, improving the heat transfer effect. The hood 71 and the air inlet pipe 72 allow the air intake hood to draw in air from the side, thereby reducing the amount of dithiourea material drawn in during the air intake process. The filter screen can filter the intake air. To reduce the risk of blockages in subsequent pipes, the impact of the hot water jet causes the vibrating plate 82 to shake during the spraying process. This shaking disrupts the water flow, increasing the spray area and improving the washing effect on the filter cloth 191. The elastic sleeve 91 connects and shields the annular plate 192 and the connecting cylinder 17, reducing the amount of dithiourea material entering the annular plate 192 and minimizing waste and contamination of other materials. A spring-loaded telescopic rod 93 pushes the annular body 92 downwards, pulling and retracting the elastic sleeve 91 into the storage cavity. The sleeve is then rotated by rollers 101.This reduces the friction between the ring 92 and the elastic sleeve 91, making it easier for the elastic sleeve 91 to be pulled out of the receiving groove. The scraper 102 removes material from the surface of the elastic sleeve 91, reducing the amount of material entering the receiving cavity and thus minimizing contamination of other materials produced by residual dithiourea material in the receiving cavity, and reducing material waste.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A crystallization centrifuge, comprising a base (11); a housing (12) and a drive motor are fixedly connected to the top side of the base (11); a distributor (13) and a hydraulic scraper (14) are fixedly connected to the top of the housing (12); a feed pipe (15) is fixedly connected to the top of the housing (12); a discharge cylinder is fixedly connected to the center of the bottom of the housing (12); a bearing seat is fixedly connected to the middle of the discharge cylinder; a main shaft (16) is rotatably connected inside the bearing seat; a belt is installed between the output end of the drive motor and the main shaft (16); characterized in that: A connecting cylinder (17) is fixedly connected to the top of the main shaft (16); a drum (19) is fixedly connected to the top of the connecting cylinder (17); a filter cloth (191) is fixedly connected to the inner wall of the top of the drum (19); an annular plate (192) is fixedly connected to the bottom of the filter cloth (191); a plurality of guide rods (193) are fixedly connected to the bottom side of the annular plate (192); the guide rods (193) penetrate the bottom wall of the drum (19) and are slidably connected to it; a plurality of hydraulic cylinders (18) are fixedly connected to the bottom of the housing (12); a push plate (194) is fixedly connected to the top of the hydraulic cylinders (18). A limiting plate is fixedly connected to the bottom of the guide rod (193); a spring is fixedly connected between the top side of the limiting plate and the drum (19); a fixing cylinder (21) is fixedly connected to the bottom side of the drum (19); the guide rod (193) passes through the fixing cylinder (21) and is slidably connected to it; an annular groove (23) is opened at the bottom of the guide rod (193); a set of grooves is opened on the inner side wall of the fixing cylinder (21); a fixing spring piece (22) is fixedly connected to the side wall of the groove. A water tank (31) is fixedly connected to the top side of the base (11); an electric heating wire is fixedly connected inside the water tank (31); a flexible tube (32) is fixedly connected to the side of the water tank (31); a submersible pump is installed at one end of the flexible tube (32); a first annular tube (33) is fixedly connected to the other end of the flexible tube (32); the first annular tube (33) is fixedly connected to the push plate (194); a plurality of conveying pipes are fixedly connected to the outer side wall of the drum (19); a nozzle (35) is fixedly connected to the top of the conveying pipe. A water outlet groove is provided inside the nozzle (35); the nozzle (35) is fixedly connected to the top of the drum (19); a second annular pipe (34) is fixedly connected to the bottom of the conveying pipe; a connecting sleeve (36) is fixedly connected to the top of the first annular pipe (33); a connecting pipe (37) is fixedly connected to the bottom of the second annular pipe (34); a positioning component is provided at the bottom of the drum (19); the positioning component is used to drive the drum (19) to rotate so that the connecting pipe (37) and the connecting sleeve (36) are positioned and aligned.

2. A crystallization centrifuge according to claim 1, characterized in that: The positioning assembly includes an electric push rod (41); a connecting seat (42) is fixedly connected to the bottom of the electric push rod (41); a positioning motor is fixedly connected to the middle of the connecting seat (42); a first gear is fixedly connected to the output end of the positioning motor; a second gear (44) is fixedly connected to the bottom outer wall of the drum (19); a positioning rod (45) is fixedly connected to the top side of the second gear (44); and a baffle (46) is fixedly connected to the side of the connecting seat (42) at the position corresponding to the positioning rod (45).

3. A crystallization centrifuge according to claim 1, characterized in that: An air intake shroud (51) is fixedly connected to the bottom of the bearing housing; a fan blade is fixedly connected to the bottom of the main shaft (16); the fan blade is located inside the air intake shroud (51); a plurality of connecting pipes (37) are fixedly connected to the top of the air intake shroud (51); a third annular pipe (52) is fixedly connected to the top of the connecting pipe (37); a set of cooling pipes (53) is fixedly connected to the third annular pipe (52); a set of air outlet grooves are opened in the wall of the cooling pipe (53); the cooling pipe (53) penetrates the housing (12) and is fixedly connected to it.

4. A crystallization centrifuge according to claim 3, characterized in that: A cooling tank (61) is fixedly connected to the top of the shell (12); a pipe (63) is fixedly connected to the bottom of the cooling tank (61); the end of the pipe (63) away from the cooling tank (61) is fixedly connected to the feed pipe (15); a valve is installed on the pipe (63); an air supply pipe (64) is fixedly connected to the side of the third annular pipe (52); an air guide shroud (62) is fixedly connected to the top of the air supply pipe (64); the air guide shroud (62) is fixedly connected to the wall of the cooling tank (61); a uniform distribution plate (66) is fixedly connected to the top of the air guide shroud (62); a set of fins (65) is fixedly connected to the wall of the cooling tank (61).

5. A crystallization centrifuge according to claim 3, characterized in that: The bottom of the air intake hood (51) is bolted with a hood body (71); an air intake pipe (72) is fixed to the side of the hood body (71), and a filter screen plate (73) is fixed to the top of the hood body (71); the main shaft (16) passes through the filter screen plate (73) and is rotatably connected to it.

6. A crystallization centrifuge according to claim 1, characterized in that: A pair of elastic ropes (81) are symmetrically fixed to the inner sidewall of the water outlet trough; a vibrating plate (82) is fixed between the pair of elastic ropes (81).

7. A crystallization centrifuge according to claim 1, characterized in that: The inner wall of the connecting cylinder (17) is provided with a storage cavity; a spring telescopic rod (93) is fixedly connected to the top side of the storage cavity; a ring (92) is fixedly connected to the bottom end of the spring telescopic rod (93); an elastic sleeve (91) is fixedly connected to the top side of the storage cavity; the top of the elastic sleeve (91) is fixedly connected to the annular plate (192).

8. A crystallization centrifuge according to claim 7, characterized in that: The bottom of the ring (92) is rotatably connected to a plurality of rollers (101); the plurality of rollers (101) are arranged in a ring array; a scraper (102) is fixedly connected to the bottom side of the storage cavity.

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