Crystal separation device of inorganic salt melt crystallization equipment

Abstract

The invention discloses a crystal separation device of inorganic salt melt crystallization equipment, relates to the technical field of inorganic salt melt crystallization, and aims to solve the technical problems that the surface area of a roller is relatively large, a circulation path of circulating water in the roller is relatively long, a temperature gradient is easily formed in a cooling path, and the surface temperature of the roller is not uniform. A molten liquid box is installed in the supporting frame, a drum-type crystallizer and a scraping and separating assembly are installed at the top of the supporting frame, the drum-type crystallizer comprises a drum body, a plurality of cooling cavities are formed in the inner side wall of the drum body and distributed in an annular array mode, and a water storage barrel is arranged in an inner cavity of the drum body. The two ends of the water storage cylinder are installed on the tops of the supporting frames correspondingly, and a piston type plate is movably arranged in the cooling cavity. The rotary drum has the advantages that all areas on the surface of the rotary drum main body are enabled to be in crystallization with melt liquid and are always in contact with low-temperature cooling water, temperature gradient is avoided, and the melt liquid is uniformly crystallized.

Description

Technical Field

[0001] This invention relates to the field of inorganic salt melt crystallization technology, and more specifically, to a crystallization separation device for inorganic salt melt crystallization equipment. Background Technology

[0002] Inorganic salt melting and crystallization equipment heats raw materials containing inorganic salts to a molten state. Lithium and sodium salts from chemical solid waste can be used as raw materials to achieve the recovery and purification of inorganic salts. Once the inorganic salts are completely dissolved to form a homogeneous molten liquid, the material is purified by temperature difference separation. The crystallization separation device of the inorganic salt melting and crystallization equipment is the core unit for the production of high-purity inorganic salts. It achieves efficient purification of the target substance through precise heat exchange and solid-liquid separation technology. The device mainly consists of a drum crystallizer, a circulating cooling system, a molten material supply device, a crystallization scraping and collection component, and an automated control system. During operation, the inorganic salt solid is first heated and melted into a liquid, allowing the liquid inorganic salt to flow to the outside of the drum. Circulating water at a fixed temperature is circulated inside the drum for cooling. Upon contact with the low-temperature drum surface, the liquid inorganic salt crystallizes and adheres. As the drum rotates, a scraper scrapes off and collects the crystals. After further cooling, high-purity inorganic salt is finally obtained. The entire process utilizes heating and melting, cooling and crystallization, and scraping and collection to achieve continuous and efficient separation.

[0003] In the crystallization separation device of an inorganic salt melting and crystallization equipment, circulating water serves as the core cooling medium, undertaking the crucial task of heat exchange. Its hollow structure, located inside the drum, is driven by a water pump. Water flows into the drum through the inlet and circulates along a long, spiral path on the inner wall of the drum. This circulation process continuously removes heat from the drum surface, thereby cooling and crystallizing the liquid inorganic salt outside the drum. However, due to the large surface area of ​​the drum and the long flow path of the circulating water inside, the temperature of the water gradually increases in the later stages of the flow path due to continuous heat absorption. This creates a temperature gradient along the cooling path, resulting in uneven temperature distribution on the drum surface. This leads to excessively thick crystallization in low-temperature zones and sparse crystallization in high-temperature zones, and even the inability of liquid inorganic salt to crystallize in high-temperature zones. Therefore, we propose a crystallization separation device for an inorganic salt melting and crystallization equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a crystallization separation device for an inorganic salt melting and crystallization equipment, in order to solve the technical problem that the large surface area of ​​the drum and the long flow path of the circulating water inside the drum easily create a temperature gradient in the cooling path, resulting in uneven temperature on the surface of the drum.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a crystallization separation device for an inorganic salt melting crystallization equipment, comprising a support frame, a molten liquid tank installed inside the support frame, and a drum-type crystallizer and a scraping separation component installed on the top of the support frame; the drum-type crystallizer includes a drum body, the inner side wall of the drum body having multiple cooling chambers arranged in a ring array, a water storage tank arranged in the inner cavity of the drum body, the two ends of the water storage tank being respectively installed on the top of the support frame, and the cooling water in the water storage tank being recycled; a piston plate is movably arranged in the cooling chamber, which, when the drum body rotates at a uniform speed, drives the piston plate to slide back and forth in the cooling chamber; when the piston plate slides forward, it is used to squeeze out the cooling water in the cooling chamber, and when the piston plate slides back, it is used to seal the newly injected cooling water in the cooling chamber; through the periodic sliding of the piston plate in the cooling chamber, a single-chamber single-time cooling effect is formed, and multiple cooling chambers participate in cooling sequentially according to the rotation sequence, forming a multi-chamber relay cooling.

[0006] Preferably, the drum crystallizer further includes multiple fixing blocks I, multiple fixing blocks II, and a motor I installed on the top of the support frame. The output end of the motor I is connected to a gear I. A cover I is connected to one side wall of the drum body. A rotating column I that penetrates one side wall of the cover I is connected to the side wall of the cover I. The rotating column I is rotatably engaged with the fixing block I through a bearing. A gear II is connected to the outer circumference of the rotating column I. The gear II meshes with the gear I. A cover II is connected to the other side wall of the drum body. The side wall of the cover II is rotatably engaged with another fixing block I through a rotating column II.

[0007] Preferably, a guide block is connected to one side wall of the water storage tank, and a support pipe is connected to one side wall of the guide block. The support pipe is movably arranged in the inner cavity of the rotating column. One end of the support pipe passes through the side wall of the fixed block and is connected to a water supply pipe. The input end of the water supply pipe is connected to an external water supply device. A guide block is connected to the other side wall of the water storage tank, and a transfer cylinder is connected to the side wall of the guide block. A fixed rod is connected to the side wall of the transfer cylinder. The fixed rod is movably arranged in the inner cavity of the rotating column and is connected to another fixed block.

[0008] Preferably, the two side walls of the cover are provided with multiple drainage channels that communicate with the inner cavity of the roller body. The inner cavity of the roller body is a frustum structure and is inclined towards the drainage channels. The cooling chamber is connected to the inner cavity of the roller body through a slot. The inner cavity of the roller body is also provided with a connecting block. The intermediate cylinder is rotatably arranged in the inner cavity of the connecting block. The inner cavity of the connecting block is connected to the inner cavity of the cooling chamber through a connecting channel.

[0009] Preferably, a guide plate is arranged at the opening of the slot, and the guide plate is inclined towards the central axis of the slot.

[0010] Preferably, a movable groove is formed on one side wall of the guide block, and a guide groove is formed on the inner side wall of the movable groove. The outer side wall structure of the second guide block is the same as that of the first guide block, and the guide groove protrudes upward about the axis of the support tube.

[0011] Preferably, the piston plate sidewall has multiple drainage holes, the piston plate sidewall is clearance-fitted with the inner sidewall of the cooling chamber, the piston plate sidewall is connected to an insert block, the insert block sidewall is configured with an inclined structure, the insert block is inserted into the slot, the insert block sidewall is connected to a push-pull rod, the end of the push-pull rod is rotatably arranged with a roller, and the roller is movably arranged in the guide groove.

[0012] Preferably, the water storage tank has an inner cylinder arranged in its inner cavity, an overflow groove is provided at the top of the inner cylinder, a heat insulation channel is formed between the outer wall of the inner cylinder and the inner wall of the water storage tank, the bottom of the water storage tank has a hollow structure, the inner cavity of the support pipe is connected to the inner cavity of the inner cylinder through the first guide block, and the inner cavity of the inner cylinder is connected to the inner cavity of the transfer cylinder through the second guide block.

[0013] Preferably, the side wall of the transfer cylinder is provided with a water inlet that communicates with its inner cavity. When the main body of the drum rotates, the water inlet can communicate with the inner cavity of the cooling chamber through the connecting channel.

[0014] Preferably, a fixed frame is connected to the inner side wall of the inner cylinder, and a rotating rod is rotatably arranged inside the fixed rod cavity. One end of the rotating rod is rotatably connected to the side wall of the fixed frame, and the other end is connected to a sprocket. A second motor is also arranged on the top of the support frame. The output end of the second motor is connected to a second sprocket, and the second sprocket is driven by the first sprocket through a chain. A spiral blade and an impeller are connected to the outer circumference of the rotating rod. The spiral blade is arranged in the inner cavity of the inner cylinder and the second guide block, and the impeller is arranged in the inner cavity of the intermediate transfer cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention constructs a multi-chamber independent circulating cooling system by setting multiple cooling chambers arranged in a ring array on the inner wall of the drum body, combined with the reciprocating sliding mechanism of the piston plate. Each cooling chamber achieves independent "water injection, cooling, and drainage" circulation operations through the movement of the piston plate. When the drum body rotates, the piston plate slides periodically in the cooling chamber. When sliding forward, it squeezes out the cooled water after heat exchange, and when sliding back, it seals the newly injected cooling water, forming a single-chamber single-time cooling effect. At the same time, multiple cooling chambers participate in cooling in sequence according to the rotation time. When a cooling chamber rotates to the bottom and contacts the molten liquid, the newly injected low-temperature cooling water quickly absorbs heat. When it rotates to the top, the hot water is discharged, and the next cooling chamber is simultaneously injected with cold water, forming a multi-chamber relay cooling method. This ensures that all areas of the drum body surface are always in contact with the low-temperature cooling water during the crystallization process with the molten liquid, avoiding temperature gradients and making the molten liquid crystallize uniformly. In principle, this solves the problem in traditional equipment where the circulating water has a long flow path inside the drum, which easily leads to uneven temperature, resulting in uneven cooling effect on the drum surface and affecting the crystallization quality.

[0016] 2. This invention designs a guide block 1, which uses the guide groove of the guide block 1 to support the structure of the tube that is offset upward from the eccentric protrusion. When the main body of the drum rotates, the roller can automatically roll along the guide groove trajectory of the eccentric protrusion. Furthermore, the push-pull rod drives the insert block to reciprocate in the slot, and synchronously drives the piston plate to slide precisely back and forth in the cooling chamber. This realizes the circulation action of cooling water discharge and injection in the cooling chamber, ensuring the timing and stability of independent circulation cooling in multiple chambers, thereby enabling each area of ​​the outer wall of the drum body to obtain a uniform and continuous cooling effect.

[0017] 3. This invention designs an inner cylinder within the water storage tank. New cooling water is transported forward through the inner cylinder. A heat insulation channel is formed between the outer wall of the inner cylinder and the inner wall of the water storage tank. When the cooling water in the cooling chamber is discharged through the slot after heat exchange, the cooling water falls into the outer wall of the water storage tank and flows into the inner cavity of the drum body through the outer wall of the water storage tank. Finally, it is discharged through the drainage channel. In this process, the heat insulation channel can block the heat transfer between the cooling water after heat exchange and the new cooling water in the inner cylinder, preventing the new cooling water from heating up due to contact with the high-temperature water flow on the outside, and ensuring that the inner cylinder always supplies low-temperature and stable cooling water to the cooling chamber.

[0018] 4. This invention also features an overflow trough at the top of the inner cylinder. As the drum body rotates, the water inlet and connecting channel gradually become misaligned, leading to a decrease in the output of cooling water in the inner cylinder. As the external water supply equipment continuously delivers cooling water, the amount of cooling water in the inner cylinder increases, and the water overflows from the overflow trough, enters the heat insulation channel, and is discharged through the hollow structure at the bottom of the water storage tank. During this process, the water flow can carry away the heat from the water storage tank, achieving cooling and heat dissipation, preventing the temperature from rising due to the cooling water being poured on it after heat exchange, thereby maintaining the low-temperature stability of the newly input cooling water in the inner cylinder, further ensuring that the cooling chambers obtain low-temperature stable cooling water, and ultimately ensuring the stability of the cooling of the outer wall of the drum body. At the same time, it solves the risk of increased internal water pressure when switching chambers during the process of sequentially injecting cooling water into multiple cooling chambers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the molten liquid tank structure of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the drum crystallizer of the present invention; Figure 4 This is a cross-sectional structural diagram of the roller body of the present invention; Figure 5 This is a schematic diagram of another cross-sectional structure of the drum body of the present invention; Figure 6 This is a schematic diagram of the inner wall structure of the drum body of the present invention; Figure 7 This is a schematic diagram of the two-part structure of the roller body and the cover of the present invention; Figure 8 This is a schematic diagram of the slot structure of the present invention; Figure 9 This is a schematic diagram showing the distribution of multiple piston plates according to the present invention; Figure 10 This is a schematic diagram of the water storage cylinder, guide block one, guide block two, and transfer cylinder of the present invention; Figure 11 This is a schematic diagram of the piston-type plate structure of the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the water storage cylinder of the present invention; Figure 13 This is a schematic diagram of the rotating rod structure of the present invention; Figure 14 This is a cross-sectional structural diagram of one usage state of the present invention.

[0020] Explanation of the labels in the diagram: 1. Support frame; 2. Molten liquid tank; 3. Drum crystallizer; 4. Scraping and separation assembly; 301. Drum body; 302. Cooling chamber; 303. Water storage tank; 304. Piston plate; 305. Fixing block one; 306. Fixing block two; 307. Motor one; 308. Cover one; 309. Rotating column one; 310. Gear one; 311. Gear two; 312. Cover two; 313. Rotating column two; 314. Guide block one; 315. Support pipe; 316. Water supply pipe; 317. Guide block two; 318. Central transfer cylinder; 319. Fixing rod; 320. Drainage channel; 321. Slot; 322. Connecting block; 323. Connecting channel; 324. Guide plate; 3031, Inner cylinder; 30311, Overflow trough; 3032, Fixing frame; 3033, Rotating rod; 3034, Sprocket 1; 3035, Motor 2; 3036, Sprocket 2; 3037, Chain; 3038, Spiral blade; 3039, Impeller; 3041, Drain hole; 3042, Insert block; 3043, Push-pull rod; 3044, Roller column; 3141, guide groove; 3181, water inlet. Detailed Implementation

[0021] like Figures 1 to 14 As shown, the present invention relates to a crystallization separation device for an inorganic salt melting crystallization apparatus, comprising a support frame 1, a molten liquid tank 2 installed inside the support frame 1, a drum crystallizer 3 and a scraping separation assembly 4 installed on the top of the support frame 1, the drum crystallizer 3 being arranged above the molten liquid tank 2, the molten liquid tank 2 being used to store inorganic salt raw materials heated to a molten state, providing the required molten liquid for the subsequent crystallization separation process. The drum crystallizer 3 includes a drum body 301, the bottom of the outer wall of the drum body 301 being arranged inside the molten liquid tank 2, and multiple cooling chambers 302 being formed on the inner wall of the drum body 301 in a circular array, and a water storage tank 303 being arranged inside the drum body 301, with both ends of the water storage tank 303 being respectively installed on the top of the support frame 1, the cooling water in the water storage tank being recycled; the scraping separation assembly 4 includes a scraper and a guide plate, wherein the scraper is in contact with the outer wall of the drum body 301, specifically, during the inorganic salt melting crystallization process... During the operation of the crystallization equipment, the raw materials containing inorganic salts are heated to a molten state, so that they are completely dissolved to form a homogeneous molten liquid. This molten liquid is stored in the molten liquid tank 2. The bottom of the outer wall of the drum body 301 of the drum crystallizer 3 is in contact with the molten liquid. Through the cooling effect of the cooling water in the cooling chamber 302, the molten liquid crystallizes at the bottom of the outer wall of the drum body 301. As the drum body 301 rotates, the scraper of the scraping separation component 4 scrapes off the crystals and collects them in the guide plate, thereby realizing the crystallization and separation of inorganic salts.

[0022] In an embodiment of the present invention, a piston plate 304 is movably arranged in the cooling chamber 302. When the drum body 301 rotates at a constant speed, it can drive the piston plate 304 to slide back and forth in the cooling chamber 302. When the piston plate 304 slides forward, it is used to squeeze out the cooling water in the cooling chamber 302. When the piston plate 304 slides back, it is used to seal the newly poured cooling water in the cooling chamber 302. The outer wall of the drum body 301 is cooled sequentially by multiple cooling chambers 302 to achieve the crystallization of inorganic salt melt. Then, the cooled water after heat exchange is discharged sequentially to form a cycle, realizing independent circulation cooling of multiple chambers. This circulation method can replace the cooling medium in time, ensuring that there is always low-temperature cooling water in the cooling chamber 302 for heat exchange, so that the inorganic salt melt can crystallize quickly and greatly improve the crystallization efficiency.

[0023] This invention constructs a multi-chamber independent circulating cooling system by setting multiple cooling chambers 302 arranged in a ring array on the inner wall of the drum body 301, and cooperating with the reciprocating sliding mechanism of the piston plate 304. Each cooling chamber 302 achieves independent "water injection, cooling, and drainage" cyclic operation through the movement of the piston plate 304. When the drum body 301 rotates, the piston plate 304 slides periodically in the cooling chamber 302. When sliding forward, it squeezes out the cooled water after heat exchange, and when sliding backward, it seals the newly injected cooling water, forming a single-chamber single-cycle cooling effect; simultaneously, multiple cooling chambers 302... 2. Cooling is carried out sequentially according to the rotation sequence. When a certain cooling chamber 302 rotates to the bottom and contacts the molten liquid, the newly injected low-temperature cooling water quickly absorbs heat. When it rotates to the top, the hot water is discharged, and the next cooling chamber 302 is simultaneously injected with cold water, forming a multi-chamber relay cooling method. This ensures that each area of ​​the surface of the drum body 301 is always in contact with the low-temperature cooling water during the crystallization process with the molten liquid, avoiding temperature gradients and making the molten liquid crystallize uniformly. In principle, this solves the problem in traditional equipment where the circulating water has a long flow path inside the drum, which easily leads to uneven temperature and uneven cooling effect on the drum surface, affecting the crystallization quality.

[0024] In an embodiment of the present invention, the drum crystallizer 3 further includes a plurality of fixing blocks 305, a plurality of fixing blocks 306, and a motor 307 mounted on the top of the support frame 1. The output end of the motor 307 is connected to a gear 310. A cover 308 is connected to one side wall of the drum body 301. A rotating column 309 penetrating the side wall of the fixing block 305 is connected to the side wall of the cover 308. The rotating column 309 is rotatably engaged with the fixing block 305 through a bearing. A gear 311 is connected to the outer circumference of the rotating column 309. The gear 311 meshes with the gear 310. A cover 312 is connected to the other side wall of the drum body 301. The side wall of the cover 312 is rotatably engaged with another fixing block 305 through a rotating column 313. After the motor 307 starts, it drives the gear 310 to rotate. Through the meshing transmission of the gear 310 and the gear 311, the rotating column 309 rotates under the bearing support of the fixed block 305, thereby causing the drum body 301 to rotate. At the same time, the cover 312 on the other side wall of the drum body 301 rotates and engages with the other fixed block 305 through the rotating column 313, ensuring the stable rotation of the drum body 301.

[0025] In an embodiment of the present invention, a guide block 314 is connected to one side wall of the water storage tank 303, and a support pipe 315 is connected to the side wall of the guide block 314. The support pipe 315 is movably arranged in the inner cavity of the rotating column 309. One end of the support pipe 315 passes through the side wall of the fixing block 306 and is connected to a water supply pipe 316. The input end of the water supply pipe 316 is connected to an external water supply device. A guide block 317 is connected to the other side wall of the water storage tank 303, and a transfer cylinder 318 is connected to the side wall of the guide block 317. A fixing rod 319 is connected to the side wall of the transfer cylinder 318. The fixing rod 319 is movably arranged in the inner cavity of the rotating column 313 and connected to another fixing block 306. The support pipe 315 is supported and fixed by one fixing block 306, and the fixing rod 319 is supported and fixed by the other fixing block 306, so that the water storage cylinder 303 can be stably and firmly held in the inner cavity of the drum body 301, and the water storage cylinder 303 remains stationary when the drum body 301 rotates.

[0026] In an embodiment of the present invention, the sidewall of the second cover 312 is provided with multiple drainage channels 320 that communicate with the inner cavity of the roller body 301. The inner cavity of the roller body 301 is a frustum-shaped cavity that is inclined toward the drainage channels 320. The cooling chamber 302 is connected to the inner cavity of the roller body 301 through a slot 321. A connecting block 322 is also arranged in the inner cavity of the roller body 301. The transfer cylinder 318 is rotatably arranged in the inner cavity of the connecting block 322. The inner cavity of the connecting block 322 is connected to the inner cavity of the cooling chamber 302 through a connecting channel 323. By designing the inner cavity of the roller body 301 as a frustum-shaped cavity that is inclined toward the drainage channels 320, the present invention can utilize the gravity of the cooling water after heat exchange to guide it to quickly converge along the inclined inner wall to the drainage channels 320 for discharge, thus avoiding the stagnation of cooling water in the inner cavity of the roller body 301 or the formation of local water accumulation.

[0027] In an embodiment of the present invention, a guide plate 324 is arranged at the opening of the slot 321. The guide plate 324 is inclined towards the central axis of the slot 321. When the cooling water after heat exchange in the cooling chamber 302 is discharged through the slot 321, the guide plate 324 can guide the cooling water downward, reducing the cooling water from flowing along the inner wall of the roller body 301. Furthermore, the guide plate 324 can block the flow of cooling water from flowing into the other cooling chamber 302 from the inner wall of the roller body 301.

[0028] In an embodiment of the present invention, a movable groove is provided on the side wall of guide block 1 314, and a guide groove 3141 is provided on the inner side wall of the movable groove. The outer side wall structure of guide block 2 317 is the same as that of guide block 1 314. The guide groove 3141 is deviated upward from the axis of the support tube 315 and protrudes.

[0029] In another embodiment of the present invention, the piston plate 304 has a plurality of drainage holes 3041 on its side wall. The side wall of the piston plate 304 is clearance-fitted with the inner side wall of the cooling chamber 302. The side wall of the piston plate 304 is connected to an insert block 3042. The side wall of the insert block 3042 is configured with a sloping structure. The insert block 3042 is inserted into the slot 321. The side wall of the insert block 3042 is connected to a push-pull rod 3043. A roller 3044 is rotatably arranged at the end of the push-pull rod 3043. The roller 3044 is movably arranged in the guide groove 3141. When the drum body 301 rotates, the insert block 3042 on the side wall of the piston plate 304 rotates with the drum body 301. The roller 3044 at the end of its push-pull rod 3043 rolls in the guide groove 3141 of the guide block 314. Since the guide groove 3141 is deviated upward from the support tube 315 axis, when the roller 3044 moves along the groove trajectory, it will drive the insert block 3042 to reciprocate in the slot 321 through the push-pull rod 3043, thereby causing the piston plate 304 to slide back and forth in the cooling chamber 302. When the cooling water in one of the cooling chambers 302 cools the bottom of the outer wall of the drum body 301, the inorganic salt melt encounters the cold and crystallizes rapidly at the bottom of the outer wall of the drum body 301. As the drum body 301 rotates, the crystals are carried away from the melt. At the same time, the piston plate 304 slides forward. The 304 itself will squeeze the cooling water in the cooling chamber 302, so that the cooling water that has completed the heat exchange will be quickly discharged through the drain hole 3041 to the slot 321, and then enter the inner cavity of the drum body 301 through the slot 321 and be discharged through the drain channel 320. When the cooling chamber 302 rotates to the top with the drum body 301, the remaining cooling water in the cooling chamber 302 will be discharged from the slot 321 due to its own gravity. As the drum body 301 continues to rotate, the piston plate 304 slides back, and the water storage tank 303 quickly injects new cooling water into the cooling chamber 302. The drain hole 3041 is sealed against the inner wall of the cooling chamber 302. At the same time, the insert block 3042 is inserted into the slot 321, so that the slot 321 is in a closed state, so that the new cooling water is sealed in the cooling chamber 302 for the next heat exchange of crystallization.

[0030] This invention designs a guide block 314, whose guide groove 3141 is offset upward from the axis of the support tube 315 by a protruding structure. When the roller body 301 rotates, the roller 3044 can automatically roll along the trajectory of the guide groove 3141 of the eccentric protrusion. Furthermore, the push-pull rod 3043 drives the insert block 3042 to reciprocate in the slot 321, and synchronously drives the piston plate 304 to slide precisely back and forth in the cooling chamber 302. This realizes the circulation action of cooling water discharge and injection in the cooling chamber 302, ensuring the timing and stability of independent circulation cooling in multiple chambers, thereby obtaining a uniform and continuous cooling effect in all areas of the outer wall of the roller body 301.

[0031] In an embodiment of the present invention, an inner cylinder 3031 is arranged in the inner cavity of the water storage cylinder 303. An overflow groove 30311 is provided at the top of the inner cylinder 3031. A heat insulation channel is formed between the outer wall of the inner cylinder 3031 and the inner wall of the water storage cylinder 303. The bottom of the water storage cylinder 303 has a hollow structure. The inner cavity of the support pipe 315 is connected to the inner cavity of the inner cylinder 3031 through the guide block 1 314. The inner cavity of the inner cylinder 3031 is connected to the inner cavity of the transfer cylinder 318 through the guide block 2 317.

[0032] This invention designs an inner cylinder 3031 within the cavity of the water storage cylinder 303. New cooling water is conveyed forward through the inner cylinder 3031. A heat insulation channel is formed between the outer wall of the inner cylinder 3031 and the inner wall of the water storage cylinder 303. When the cooling water in the cooling chamber 302, after heat exchange, is discharged through the slot 321, the cooling water falls into the outer wall of the water storage cylinder 303 and flows into the inner cavity of the drum body 301 through the outer wall of the water storage cylinder 303. Finally, it is discharged through the drainage channel 320. In this process, the heat insulation channel can block the heat transfer between the cooling water after heat exchange and the new cooling water in the inner cylinder 3031, preventing the new cooling water from heating up due to contact with the high-temperature water flow outside, and ensuring that the inner cylinder 3031 always supplies low-temperature and stable cooling water to the cooling chamber 302.

[0033] In an embodiment of the present invention, the side wall of the transfer cylinder 318 is provided with a water inlet 3181 that communicates with its inner cavity. When the drum body 301 rotates, the water inlet 3181 can communicate with the inner cavity of the cooling chamber 302 through the connecting channel 323.

[0034] In an embodiment of the present invention, a fixed frame 3032 is connected to the inner wall of the inner cylinder 3031, and a rotating rod 3033 is rotatably arranged in the inner cavity of the fixed rod 319. One end of the rotating rod 3033 is rotatably connected to the side wall of the fixed frame 3032, and the other end is connected to a sprocket 3034. A second motor 3035 is also arranged on the top of the support frame 1. A second sprocket 3036 is connected to the output end of the second motor 3035. The second sprocket 3036 is connected to the first sprocket 3034 through a chain 3037. A spiral blade 3038 and an impeller 3039 are connected to the outer circumference of the rotating rod 3033. The spiral blade 3038 is arranged in the inner cavity of the inner cylinder 3031 and the guide block 317, and the impeller 3039 is arranged in the inner cavity of the intermediate rotating cylinder 318. After the motor 3035 starts, it drives the sprocket 3034 to rotate through the sprocket 3036 and chain 3037, causing the rotating rod 3033 to rotate inside the inner cylinder 3031 and the fixed rod 319. The spiral blades 3038 on its outer wall push the cooling water in the inner cylinder 3031 into the intermediate drum 318 through the guide block 317. At the same time, the impeller 3039 agitates the water flow in the intermediate drum 318. When the drum body 301 rotates to the point where the water inlet 3181 is aligned with the connecting channel 323, the cooling water in the intermediate drum 318 is poured into the cooling chamber 302 through the water inlet 3181 and the connecting channel 323. The pushing of the spiral blades 3038 and the agitation of the impeller 3039 ensure the continuous delivery and uniform distribution of the cooling water, while the periodic connection between the water inlet 3181 and the connecting channel 323 achieves precise water filling of the cooling chamber 302. The reciprocating motion of the piston plate 304 completes the cooling water circulation.

[0035] As the drum body 301 rotates, the water inlet 3181 and the connecting channel 323 gradually become misaligned, which leads to a decrease in the output of cooling water in the inner cylinder 3031. As the external water supply equipment continues to deliver cooling water, the amount of cooling water in the inner cylinder 3031 increases. The water overflows from the overflow tank 30311, enters the heat insulation channel, and is discharged from the hollow structure at the bottom of the water storage tank 303. In this process, the water flow can carry away the heat on the water storage tank 303, thereby cooling and dissipating heat from the water storage tank 303 and preventing its temperature from rising due to the cooling water after heat exchange. This maintains the low-temperature stability of the newly input cooling water in the inner cylinder 3031, further ensuring that the cooling chamber 302 obtains low-temperature stable cooling water, and ultimately ensuring the stability of the cooling of the outer wall of the drum body 301. At the same time, it solves the risk of increased internal water pressure when switching chambers during the process of sequentially injecting cooling water into multiple cooling chambers 302.

[0036] Working Principle: This embodiment provides a crystallization separation device for an inorganic salt melting and crystallization equipment. In use, the inorganic salt raw material is first heated and melted into a molten liquid, which is stored in the molten liquid tank 2. The bottom of the outer wall of the drum body 301 is immersed in the molten liquid. Motor 1 307 is started, driving the drum body 301 to rotate via gear transmission. Simultaneously, an external water supply device supplies water to the inner cylinder 3031 through the water supply pipe 316 and support pipe 315. Motor 2 3035 drives the rotating rod 3033 to rotate, and the spiral blades 3038 push the cooling water in the inner cylinder 3031 to the intermediate transfer cylinder 318. The impeller 3039 agitates the water flow. When the drum body 301 rotates and aligns the water inlet 3181 with the connecting channel 323, the intermediate transfer cylinder… Cooling water is poured into the cooling chamber 302 to cool the molten liquid at the bottom of the outer wall of the drum body 301, causing it to crystallize. As the drum rotates, the piston plate 304 slides back and forth under the action of the guide groove 3141. When sliding forward, the cooling water after heat exchange is discharged into the inner cavity of the drum body 301 through the drain hole 3041 and the slot 321, and discharged through the drain channel 320 by the frustum structure. When sliding backward, the newly injected cooling water is sealed off. The crystals are scraped off by the scraper as the drum rotates and collected by the guide plate. Excess cooling water in the inner cylinder 3031 overflows from the overflow tank 30311 into the heat insulation channel and is discharged from the bottom of the water storage tank 303 to maintain the low temperature, realizing the crystallization separation operation of independent circulation cooling in multiple chambers.

[0037] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A crystallization separation device for an inorganic salt melt crystallization apparatus, characterized in that, Includes a support frame (1), inside which a molten liquid tank (2) is installed, and on the top of the support frame (1) a roller crystallizer (3) and a scraping and separating assembly (4). The drum crystallizer (3) includes a drum body (301), and a plurality of cooling chambers (302) are provided on the inner side wall of the drum body (301). The plurality of cooling chambers (302) are arranged in a ring array. A water storage tank (303) is arranged in the inner cavity of the drum body (301). The two ends of the water storage tank (303) are respectively installed on the top of the support frame (1). The cooling water in the water storage tank is recycled. A piston plate (304) is movably arranged in the cooling chamber (302). When the roller body (301) rotates at a constant speed, it can drive the piston plate (304) to slide back and forth in the cooling chamber (302). When the piston plate (304) slides forward, it is used to squeeze out the cooling water in the cooling chamber (302). When the piston plate (304) slides back, it is used to seal the cooling water newly poured into the cooling chamber (302). The piston plate (304) slides periodically in the cooling chamber (302).

2. The crystallization separation device of an inorganic salt melting crystallization apparatus according to claim 1, characterized in that, The drum crystallizer (3) also includes multiple fixing blocks one (305), multiple fixing blocks two (306) and motor one (307) installed on the top of the support frame (1), and the output end of the motor one (307) is connected to gear one (310). A cover (308) is connected to one side wall of the roller body (301). A rotating column (309) is connected to the side wall of the cover (308) through the side wall of the fixing block (305). The rotating column (309) is rotatably engaged with the fixing block (305) through a bearing. A gear (311) is connected to the outer circumference of the rotating column (309). The gear (311) meshes with the gear (310). A cover (312) is connected to the other side wall of the roller body (301). The side wall of the cover (312) is rotatably engaged with another fixing block (305) through a rotating column (313).

3. The crystallization separation device of an inorganic salt melting crystallization equipment according to claim 2, characterized in that, A guide block (314) is connected to one side wall of the water storage tank (303), and a support pipe (315) is connected to the side wall of the guide block (314). The support pipe (315) is movably arranged in the inner cavity of the rotating column (309). One end of the support pipe (315) passes through the side wall of the fixed block (306) and is connected to a water supply pipe (316). The input end of the water supply pipe (316) is connected to an external water supply device. The water storage cylinder (303) is connected to a guide block two (317) on the other side wall. The guide block two (317) is connected to a transfer cylinder (318) on the side wall. The transfer cylinder (318) is connected to a fixing rod (319) on the side wall. The fixing rod (319) is movably arranged in the inner cavity of the rotating column two (313) and connected to another fixing block two (306).

4. The crystallization separation device of an inorganic salt melting crystallization equipment according to claim 3, characterized in that, The second cover (312) has multiple drainage channels (320) on its side wall that are connected to the inner cavity of the roller body (301). The inner cavity of the roller body (301) is a frustum structure and is inclined toward the drainage channels (320). The cooling chamber (302) is connected to the inner cavity of the roller body (301) via a slot (321); The inner cavity of the drum body (301) is also provided with a connecting block (322), and the intermediate drum (318) is rotatably arranged in the inner cavity of the connecting block (322). The inner cavity of the connecting block (322) is connected to the inner cavity of the cooling chamber (302) through the connecting channel (323).

5. The crystallization separation device of an inorganic salt melting crystallization apparatus according to claim 4, characterized in that, A guide plate (324) is arranged at the opening of the slot (321), and the guide plate (324) is inclined towards the central axis of the slot (321).

6. The crystallization separation device of an inorganic salt melting crystallization apparatus according to claim 4, characterized in that, The guide block one (314) has a movable groove on its side wall, and a guide groove (3141) is provided on the inner side wall of the movable groove. The outer side wall structure of the guide block two (317) is the same as that of the outer side wall structure of the guide block one (314). The guide groove (3141) protrudes upward with respect to the axis of the support tube (315).

7. The crystallization separation device of an inorganic salt melting crystallization apparatus according to claim 6, characterized in that, The piston plate (304) has multiple drainage holes (3041) on its side wall. One side wall of the piston plate (304) is clearance-fitted with the inner side wall of the cooling chamber (302). A plug (3042) is connected to the side wall of the piston plate (304). The side wall of the plug (3042) is set as a sloping structure. The plug (3042) is inserted into the slot (321). A push-pull rod (3043) is connected to the side wall of the plug (3042). A roller (3044) is rotatably arranged at the end of the push-pull rod (3043). The roller (3044) is movably arranged in the guide groove (3141).

8. The crystallization separation device of an inorganic salt melting crystallization equipment according to claim 3, characterized in that, The water storage cylinder (303) has an inner cylinder (3031) arranged in its inner cavity. An overflow groove (30311) is provided on the top of the inner cylinder (3031). A heat insulation channel is formed between the outer wall of the inner cylinder (3031) and the inner wall of the water storage cylinder (303). The bottom of the water storage cylinder (303) has a hollow structure. The inner cavity of the support pipe (315) is connected to the inner cavity of the inner cylinder (3031) through the first guide block (314). The inner cavity of the inner cylinder (3031) is connected to the inner cavity of the transfer cylinder (318) through the inner cavity of the second guide block (317).

9. The crystallization separation device of an inorganic salt melting crystallization apparatus according to claim 4, characterized in that, The transfer cylinder (318) has a water inlet (3181) on its side wall that communicates with its inner cavity. When the drum body (301) rotates, the water inlet (3181) can communicate with the inner cavity of the cooling chamber (302) through the connecting channel (323).

10. The crystallization separation device of an inorganic salt melting crystallization apparatus according to claim 8, characterized in that, The inner wall of the inner cylinder (3031) is connected to a fixed frame (3032), and a rotating rod (3033) is rotatably arranged in the inner cavity of the fixed rod (319). One end of the rotating rod (3033) is rotatably connected to the side wall of the fixed frame (3032), and the other end is connected to a sprocket (3034). A motor (3035) is also arranged on the top of the support frame (1). The output end of the motor (3035) is connected to a sprocket (3036). The sprocket (3036) is connected to the sprocket (3034) through a chain (3037). The outer circumference of the rotating rod (3033) is connected to a spiral blade (3038) and an impeller (3039). The spiral blade (3038) is arranged in the inner cavity of the inner cylinder (3031) and the guide block 2 (317), and the impeller (3039) is arranged in the inner cavity of the intermediate rotating cylinder (318).

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