Suspension melt crystallization system

Abstract

The invention relates to the technical field of melt crystallization, and particularly discloses a suspension melt crystallization system which comprises a tank body, a cooling mechanism, a first knocking mechanism, a second knocking mechanism and a linkage mechanism, the cooling mechanism comprises a rotating rod, a cooling plate, a cooling liquid circulating assembly and a driving assembly, the rotating rod is rotationally arranged, the cooling plate is arranged on the rotating rod, a first flow channel is formed in the cooling plate, a second flow channel is formed in the side wall of the tank body, the first flow channel communicates with the second flow channel, and the driving assembly is arranged on the first flow channel. And the cooling liquid circulating assembly is arranged between the first flow channel and the second flow channel, and the driving assembly is used for driving the rotating rod to rotate. The raw material liquid is cooled and crystallized through the cooling plate, and the cooling plate is rotationally arranged, so that the possibility of crystal wall attachment on the outer wall of the cooling plate can be reduced; when the cooling plate rotates, the first knocking mechanism and the second knocking mechanism can be driven to operate, the possibility that crystals are attached to the outer wall of the cooling plate can be further reduced, and therefore the heat exchange efficiency is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of melt crystallization, and in particular to a suspension melt crystallization system. Background Art

[0002] Suspension melt crystallization is a crystallization technique used to purify organic compounds by crystallization in the absence of solvents. This system involves a liquid phase that is rich in crystalline components and can be a single-component or multi-component system.

[0003] During the purification process, the molten raw material liquid is first added to the crystallizer, which cools the raw material liquid inside. Crystals will gradually precipitate from the raw material liquid and become suspended matter. After a period of crystallization, the suspension is transferred to a solid-liquid separation device to separate the crystal particles from the mother liquor. The separated crystals are then washed or sweated to remove impurities contained in or attached to the particles, and a high-purity product can be produced. Suspended melt crystallization has the advantages of high purity, high yield and flexible operation, and is suitable for the separation and purification of various solutes, such as chemicals, drugs, metal salts, etc.

[0004] The crystallizer used for suspended melt crystallization is usually set up in an interlayer cooling mode, that is, an interlayer for accommodating a coolant is set in the inner wall of the container of the crystallizer, and the coolant circulates in the interlayer, thereby cooling the raw material liquid inside the crystallizer, so that the required crystals are precipitated in the raw material liquid. The crystallizer is usually also provided with a stirring mechanism for stirring the raw material liquid, thereby reducing the possibility of crystal wall formation, that is, reducing the crystals attached to the inner wall of the crystallizer, thereby ensuring the heat exchange efficiency of the crystallizer. Since the interlayer is set in the crystallizer and coolant flows in the interlayer, the temperature of the interlayer is relatively low. Even if a stirring mechanism is set, in the case of insufficient stirring or uneven flow of coolant, the inner wall of the crystallizer is still prone to crystal deposition and wall formation, affecting the heat exchange efficiency, so further improvement is needed. Summary of the invention

[0005] In order to reduce the influence of the crystal wall phenomenon on the heat exchange efficiency, the present application provides a suspension melt crystallization system.

[0006] The present application provides a suspension melt crystallization system that adopts the following technical solution: A suspension melt crystallization system comprises a tank body, a cooling mechanism, a first knocking mechanism, a second knocking mechanism and a linkage mechanism arranged in the tank body; The cooling mechanism comprises a rotating rod, a cooling plate, a coolant circulation assembly and a driving assembly, the rotating rod is rotatably connected to the tank body, the cooling plate is arranged on the rotating rod, a first flow channel for the coolant to flow is provided in the cooling plate, a second flow channel for the coolant to flow is provided in the side wall of the tank body, the first flow channel and the second flow channel are connected, the coolant circulation assembly and the driving assembly are both arranged on the tank body, the two ends of the coolant circulation assembly are respectively connected to the first flow channel and the second flow channel, so that the coolant can circulate between the first flow channel and the second flow channel, and the driving assembly is used to drive the rotating rod to rotate; The first knocking mechanism includes a first support rod, a first knocking block and a first elastic member, wherein the first support rod is arranged along the axis direction of the tank body and is rotatably connected to the inner wall of the tank body, the first knocking block is fixedly connected to the first support rod, and the first elastic member is connected between the first support rod and the tank body, so that the first knocking block is pressed against the inner wall of the tank body at the second flow channel; The second knocking mechanism includes a second support rod, a second knocking block and a second elastic member, the second support rod is arranged along the axis direction of the tank body and is rotatably connected to the cooling plate, the second knocking block is fixedly connected to the second support rod, and the second elastic member is connected between the second support rod and the cooling plate, so that the second knocking block is pressed against the outer wall of the cooling plate; The linkage mechanism is arranged between the first knocking mechanism and the second knocking mechanism, so that when the cooling plate rotates with the rotating rod, the second knocking block and the first knocking block can rotate successively, and then the second knocking block rotates in the opposite direction until it is pressed against the cooling plate, and the first knocking block rotates in the opposite direction until it is pressed against the inner wall of the tank body.

[0007] By adopting the above technical scheme, the cooling plate and the coolant circulation component cooperate with each other, so that the coolant can circulate inside the tank body and the inner wall of the tank body, achieving uniform cooling and reducing the wall caking problem caused by local overcooling, thereby ensuring heat exchange efficiency; the first knocking block is pressed against the inner wall of the tank body under the action of the first elastic member, and when the cooling plate rotates with the rotating rod, the first knocking block will be driven away from the inner wall of the tank body, and then rotated in the opposite direction and pressed against again, thereby intermittently knocking on the inner wall of the tank body, causing the inner wall of the tank body to vibrate, thereby preventing crystals from accumulating here; the second knocking block is pressed against the outer wall of the cooling plate under the action of the second elastic member, and when the cooling plate rotates, the second knocking block will be driven away from the outer wall of the cooling plate, and then rotated in the opposite direction and pressed against again, thereby intermittently knocking on the outer wall of the cooling plate, causing the outer wall of the cooling plate to vibrate, thereby preventing crystals from accumulating here.

[0008] Optionally, the linkage mechanism includes a first gear, a second gear, a slide rail, a meshing member and a spring, the first gear is coaxially fixedly connected to the first support rod, the second gear is coaxially fixedly connected to the second support rod, the slide rail is fixedly connected to the cooling plate, the slide rail is arranged between the first gear and the second gear, the slide rail is arranged in an arc shape, the meshing member is slidably arranged on the slide rail, and the spring is connected between the meshing member and the slide rail; The meshing member includes a first rack, a second rack and a connecting rod, the connecting rod is fixedly connected between the first rack and the second rack, the first rack is used to mesh with the first gear, the second rack is used to mesh with the second gear, the elastic coefficient of the first elastic member is greater than the elastic coefficient of the second elastic member and the spring, so that when the cooling plate rotates with the rotating rod, the meshing member slides to the side away from the spring, so that the second gear rotates, and the second knocking block rotates to the side away from the cooling plate, and then the meshing member drives the first gear to rotate, and the first knocking block rotates to the side away from the inner wall of the tank body, and then the first knocking block and the second knocking block rotate in opposite directions to knock the inner wall of the tank body and the outer wall of the cooling plate respectively.

[0009] By adopting the above technical solution, the linkage mechanism is used to drive the first knocking block and the second knocking block to rotate. The rotation of the first knocking block and the second knocking block are driven by the meshing member, and the movement of the meshing member is driven by the cooling plate. Therefore, when the cooling plate rotates, on the one hand, the cooling plate and the raw material liquid can be fully contacted to perform sufficient heat exchange. On the other hand, the first knocking mechanism and the second knocking mechanism can be driven to operate, so that the operation of the knocking mechanism does not require the setting of an additional power source, which is more energy-saving. In addition, the vibration caused by the first knocking member and the second knocking member when knocking can not only reduce the attached crystals, but also reduce the scale accumulated on the inner walls of the first flow channel and the second flow channel, which can further ensure the heat exchange efficiency.

[0010] Optionally, the linkage mechanism is arranged at the top of the tank body.

[0011] By adopting the above technical solution, the linkage mechanism can be prevented from directly contacting the raw material liquid in the tank body, which helps to ensure the normal operation of the linkage mechanism and prolong the service life of the linkage mechanism.

[0012] Optionally, both the first knocking block and the second knocking block are provided with holes for the raw material liquid to pass through.

[0013] By adopting the above technical solution, when the first knocking block and the second knocking block are rotated and reset under the action of the corresponding elastic parts, part of the raw material liquid can pass through the perforations, thereby reducing the resistance encountered by the first knocking block and the second knocking block during the rotation process, thereby ensuring the rotation speed of the first knocking block and the second knocking block during the reset process and ensuring the knocking vibration effect.

[0014] Optionally, both the first knocking block and the second knocking block are provided with flexible pads.

[0015] By adopting the above technical solution, the impact force during the knocking process can be effectively reduced to avoid damage to the inner wall of the tank and the cooling plate; at the same time, the flexible pad can also increase the frequency of knocking and enhance the knocking vibration effect, thereby reducing the possibility of crystal wall formation.

[0016] Optionally, a connecting pipe connected to the coolant circulation assembly is fixedly connected to the top wall of the tank body, the connecting pipe is rotatably connected to the top of the rotating rod, the top of the first flow channel extends to the top of the rotating rod, and the top of the first flow channel is connected to the connecting pipe.

[0017] By adopting the above technical solution, the rotating connection design of the connecting pipe and the rotating rod ensures the continuous supply of coolant, avoids the problem of coolant interruption caused by the rotation of the rotating rod, and further enhances the reliability of the system.

[0018] Optionally, the driving assembly includes a rotating power member, a driving gear and a driven gear, the rotating power member is fixedly arranged on the tank body, the driving gear is coaxially fixedly connected to the output end of the rotating power member, the driven gear is coaxially fixedly connected to the rotating rod, and the driving gear and the driven gear are meshed.

[0019] By adopting the above technical solution, under the cooperation of the driving gear and the driven gear, the rotating power part can drive the rotating rod to rotate when it rotates, thereby realizing stable driving of the rotating rod.

[0020] Optionally, the bottom end of the rotating rod is vertically fixedly connected to a branch pipe, the end of the first flow channel is connected to the branch pipe, a connecting ring is fixedly connected to the branch pipe, a cavity connected to the branch pipe is provided in the connecting ring, a liquid storage ring is fixedly connected to the bottom wall inside the tank body, a cavity connected to the second flow channel is provided in the liquid storage ring, and the connecting ring is rotatably connected to the liquid storage ring and is connected to each other.

[0021] By adopting the above technical solution and the rotating connection design between the connecting ring and the liquid storage ring, the flow of the coolant will not be affected by the entanglement of the pipe during the rotation of the rotating rod, thereby ensuring the long-term stable operation of the system.

[0022] Optionally, a plurality of first flow channels are provided, the number of the first flow channels is the same as the number of cooling plates, each of the first flow channels is provided in a corresponding cooling plate, an infusion tube is fixedly connected to the cooling plate, and the infusion tube is connected between the bottom end of the first flow channel and the branch pipe.

[0023] By adopting the above technical solution, multiple first flow channels are distributed in each cooling plate, so that the coolant can be evenly distributed to each cooling plate, thereby improving the cooling efficiency and avoiding local overcooling or overheating, thereby ensuring that the temperature control of the entire system is more uniform and stable; since multiple first flow channels are provided, two adjacent first flow channels are only combined at the top and bottom ends, so that the length of the first flow channel can be shortened, thereby shortening the flow path of the coolant, which helps to ensure the cooling effect.

[0024] Optionally, a separator ring is provided on the outer fixed sleeve of the liquid storage ring, and a gap for accommodating air is provided between the inner wall of the separator ring and the outer wall of the liquid storage ring.

[0025] By adopting the above technical solution, the setting of the separation ring effectively isolates the liquid storage ring from the raw material liquid in the tank body, so that the outer wall of the liquid storage ring does not directly contact the raw material liquid. Therefore, it is not easy to produce crystal wall formation on the outer wall of the liquid storage ring, so that more crystals are suspended in the suspension, which is convenient for subsequent collection of the crystals.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The cooling plate is rotatably arranged in the tank body, and a first flow channel for the circulation of the coolant is arranged in the cooling plate, so that the cooling plate can fully contact with the raw material liquid in the tank body, so that the raw material liquid can be cooled better, which helps to accelerate the precipitation of crystals; because the cooling plate is in a moving state, it is not easy for crystals to adhere to the outer wall of the cooling plate, which helps to ensure the heat exchange efficiency.

[0027] 2. A second flow channel is opened in the inner wall of the tank body. The coolant first flows into the first flow channel to exchange heat with the raw material liquid. Then the coolant that has undergone heat exchange can flow into the second flow channel. The coolant in the second flow channel can exchange heat with the raw material liquid again, which helps to enhance the cooling effect on the raw material liquid. Since the coolant in the second flow channel has a higher temperature after heat exchange, the possibility of sintering on the inner wall of the tank body can be reduced.

[0028] 3. When the cooling plate rotates, the linkage mechanism can drive the first knocking mechanism and the second knocking mechanism to operate, thereby knocking the inner wall of the tank body and the outer wall of the cooling plate, which can further reduce the possibility of crystal wall formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a cross-sectional view of an embodiment of the present application; Figure 3 is a cross-sectional view of an embodiment of the present application for showing a first flow channel; Figure 4 is a cross-sectional view of the embodiment of the present application when the meshing member and the first gear just begin to mesh; Figure 5 is an exploded schematic diagram of a meshing member in an embodiment of the present application; Figure 6 is a cross-sectional view of the second support rod after rotation in the embodiment of the present application; Figure 7 It is a cross-sectional view after the second support rod and the first support rod are rotated in the embodiment of the present application.

[0030] Reference numerals: 1, tank body; 11, second flow channel; 2, cooling mechanism; 21, rotating rod; 22, cooling plate; 221, first flow channel; 23, coolant circulation assembly; 231, pump body; 232, radiator; 24, driving assembly; 241, rotating power member; 242, driving gear; 243, driven gear; 3, first knocking mechanism; 31, first support rod; 32, first knocking block; 33, first elastic member; 4, second knocking mechanism; 41, second support rod Rod; 42, second knocking block; 43, second elastic member; 5, linkage mechanism; 51, first gear; 52, second gear; 53, slide rail; 54, meshing member; 541, first rack; 542, second rack; 543, connecting rod; 544, slider; 55, spring; 6, perforation; 7, connecting pipe; 8, branch pipe; 9, connecting ring; 10, liquid storage ring; 12, infusion tube; 13, separator ring; 14, collecting pipe; 15, connecting pipe; 16, heat dissipation pipe. DETAILED DESCRIPTION

[0031] The following combination Figure 1-Figure 7 This application is described in further detail.

[0032] The present application discloses a suspension melt crystallization system. Figure 1 and Figure 2 The suspension melt crystallization system includes a tank body 1 and a cooling mechanism 2 arranged in the tank body 1, and the axis of the tank body 1 is arranged vertically. A liquid inlet and a liquid outlet are provided on the tank body 1, and valves for controlling opening and closing are provided at the liquid inlet and the liquid outlet. After the raw material liquid is added into the tank body 1, the raw material liquid is cooled and crystallized in the tank body 1, and the crystals precipitated from the raw material liquid will be suspended in the raw material liquid to form a suspension; after a period of crystallization, the suspension is discharged into a crystallization centrifuge for solid-liquid separation to separate relatively pure crystals, and then the crystals are washed and melted to further purify the product, and finally the purified product can be collected.

[0033] Reference Figure 2 and Figure 3The cooling mechanism 2 includes a rotating rod 21, a cooling plate 22, a coolant circulation component 23 and a driving component 24. The rotating rod 21 is coaxially arranged in the tank body 1, and the rotating rod 21 is rotatably connected to the top wall of the tank body 1. The cooling plate 22 is fixedly connected to the rotating rod 21, and the cooling plates 22 are arranged in multiple rows and arranged in a circular array. In this embodiment, the cooling plates 22 are symmetrically arranged in two rows; each row includes a plurality of cooling plates 22 evenly spaced in the vertical direction. A first flow channel 221 is provided in each cooling plate 22, and a vertically arranged second flow channel 11 is provided in the inner wall of the tank body 1. The second flow channel 11 is provided with multiple channels and arranged in a circular array. Cooling liquid circulates in the first flow channel 221 and the second flow channel 11, which is used to cool the raw material liquid in the tank body 1 and accelerate the precipitation of crystals.

[0034] The bottom end of the rotating rod 21 is vertically fixedly connected to a branch pipe 8, and a connecting ring 9 is fixedly connected to the branch pipe 8. The connecting ring 9 and the tank body 1 are coaxially arranged, and a cavity for accommodating coolant is arranged in the connecting ring 9, and the connecting ring 9 and the branch pipe 8 are connected. A liquid storage ring 10 is coaxially fixedly connected to the inner wall of the bottom of the tank body 1, and the liquid storage ring 10 is located below the connecting ring 9. A cavity for accommodating coolant is arranged in the liquid storage ring 10, and the liquid storage ring 10 and the bottom end of the second flow channel 11 are connected through a connecting pipe 15. The bottom end of the connecting ring 9 and the top end of the liquid storage ring 10 are rotatably connected, and the connecting ring 9 and the liquid storage ring 10 are internally connected.

[0035] A vertical infusion tube 12 is fixedly connected to the branch tube 8, and the branch tube 8 is connected to the infusion tube 12; the infusion tube 12 is also connected to the bottom end of the first flow channel 221, and the top end of the first flow channel 221 extends to the top end of the rotating rod 21. Therefore, the coolant in the first flow channel 221 can flow into the infusion tube 12, the branch tube 8, the connecting ring 9, the liquid storage ring 10 and the second flow channel 11 in sequence.

[0036] A connecting pipe 7 is coaxially fixedly connected to the top wall of the tank body 1, the top of the rotating rod 21 passes through the top wall of the tank body 1 and is rotatably connected to the connecting pipe 7, and the top of the first flow channel 221 passes through the top of the rotating rod 21 and is connected to the connecting pipe 7. The arrangement of the connecting pipe 7 makes it difficult for the rotation of the rotating rod 21 to affect the connection between the pipes. The coolant circulation component 23 is arranged between the top of the first flow channel 221 and the top of the second flow channel 11, and the coolant circulation component 23 is used to connect the top of the first flow channel 221 and the top of the second flow channel 11.

[0037] The coolant circulation assembly 23 includes a pump body 231 and a radiator 232, both of which are fixedly connected to the top wall of the tank body 1. The water outlet of the pump body 231 is connected to the top of the connecting pipe 7; the water inlet of the pump body 231 is connected to the top of the second flow channel 11, and a collection pipe 14 for collecting coolant is connected between the water inlet of the pump body 231 and the top of the second flow channel 11. The collection pipe 14 is arranged in an annular shape; the collection pipe 14 and the top of the second flow channel 11 are connected through a heat dissipation pipe 16. The radiator 232 is arranged on the pipeline between the collection pipe 14 and the pump body 231. Therefore, under the action of the pump body 231, the cooling liquid can flow into the first flow channel 221, so that the cooling plate 22 and the raw material liquid in the tank body 1 can exchange heat, cool the raw material liquid, and accelerate the precipitation of crystals; then the cooling liquid in the first flow channel 221, after heat exchange with the raw material liquid, flows into the infusion pipe 12, the branch pipe 8, the connecting ring 9, the liquid storage ring 10 and the second flow channel 11 in sequence, and the cooling liquid in the second flow channel 11 exchanges heat with the raw material liquid in the tank body 1 again, and then flows into the radiator 232 through the heat dissipation pipe 16 and the collecting pipe 14 for cooling, and the cooled cooling liquid flows into the first flow channel 221 through the pump body 231 and the connecting pipe 7, so that the cooling liquid circulates.

[0038] Reference Figure 2 The driving assembly 24 includes a rotating power member 241, a driving gear 242 and a driven gear 243. The rotating power member 241 is a motor, which is fixedly connected to the outer wall at the top of the tank body 1, and the output shaft of the rotating power member 241 is vertically downward, and the output shaft of the rotating power member 241 penetrates into the tank body 1. The driving gear 242 is coaxially fixedly connected to the output shaft end of the rotating power member 241, and the driven gear 243 is coaxially fixedly connected to the top of the rotating rod 21, and the driving gear 242 and the driven gear 243 are meshed. Therefore, under the cooperation of the driving gear 242 and the driven gear 243, the rotating power member 241 can drive the rotating rod 21 to rotate after starting, thereby driving the cooling plate 22 to rotate, so that the cooling plate 22 and the raw material liquid in the tank body 1 are more fully contacted, thereby improving the heat exchange efficiency. Since the cooling plate 22 is in a moving state, it is not easy to form a wall on the outer wall of the cooling plate 22, which helps to ensure the heat exchange efficiency.

[0039] Among them, a separator ring 13 is fixedly arranged on the outside of the liquid storage ring 10, and a cavity for accommodating air is arranged between the inner wall of the separator ring 13 and the outer wall of the liquid storage ring 10, so that the outer wall of the liquid storage tube is not in direct contact with the raw material liquid in the tank body 1, which can reduce the possibility of wall formation on the outer wall of the liquid storage ring 10 in a static state, and is helpful for the subsequent collection of crystals.

[0040] Since the inner wall of the tank body 1 and the cooling plate 22 at the second flow channel 11 are in contact with the raw material liquid in the tank body 1 for heat exchange, in order to further reduce the possibility of crystal wall formation on the inner wall of the tank body 1 and the outer wall of the cooling plate 22 and ensure the heat exchange efficiency, the tank body 1 is further provided with a first knocking mechanism 3, a second knocking mechanism 4 and a linkage mechanism 5. The linkage mechanism 5 is used to drive the first knocking mechanism 3 and the second knocking mechanism 4 to operate, knock the inner wall of the tank body 1 and the outer wall of the cooling plate 22, thereby further reducing the possibility of the precipitated crystals adhering.

[0041] Reference Figure 3 and Figure 4 The first knocking mechanism 3 is provided with multiple groups, the number of the first knocking mechanism 3 is the same as the number of the second flow channels 11, and each group of the first knocking mechanism 3 corresponds to a second flow channel 11. The first knocking mechanism 3 is arranged on the inner wall of the tank body 1 at the corresponding second flow channel 11, and the first knocking mechanism 3 includes a first support rod 31, a first knocking block 32 and a first elastic member 33.

[0042] The first support rod 31 is arranged vertically, and the first support rod 31 rotates around its own axis and is connected to the inner wall of the tank body 1. The first knocking block 32 is fixedly connected to the first support rod 31, and a plurality of the first knocking blocks 32 are arranged evenly spaced in the vertical direction. The first elastic member 33 is a coil spring, and the first elastic member 33 is fixedly connected between the first support rod 31 and the inner wall of the tank body 1. Under normal conditions, the first elastic member 33 is in a twisted state, so that the first knocking block 32 is pressed against the inner wall of the tank body 1. Therefore, the first support rod 31 is rotated so that the first knocking block 32 rotates toward the side away from the inner wall of the tank body 1 at the second flow channel 11, and then the first support rod 31 is released, and the first elastic member 33 causes the first support rod 31 and the first knocking block 32 to rotate in the opposite direction until the first knocking block 32 is pressed against the inner wall of the tank body 1, thereby achieving the knocking of the inner wall of the tank body 1 at the second flow channel 11, which can make the inner wall of the tank body 1 vibrate, further reducing the possibility of crystal attachment.

[0043] Reference Figure 2 and Figure 4, the second knocking mechanism 4 is provided with multiple groups, the number of the second knocking mechanisms 4 is the same as the number of cooling plates 22 at the same height, and each group of the second knocking mechanisms 4 corresponds to a cooling plate 22. The second knocking mechanism 4 includes a second support rod 41, a second knocking block 42 and a second elastic member 43. The second support rod 41 is vertically arranged, and the second support rod 41 rotates around its own axis and is connected to the outer wall of the cooling plate 22. The second knocking block 42 is fixedly connected to the second support rod 41, and the second knocking blocks 42 are provided in plurality and are evenly spaced and arranged in the vertical direction. The second elastic member 43 is a coil spring, and the second elastic member 43 is fixedly connected between the second support rod 41 and the cooling plate 22. Under normal conditions, the second elastic member 43 is in a twisted state, so that the second knocking block 42 is pressed against the outer wall of the cooling plate 22. Therefore, after the second support rod 41 is rotated and then released, the second elastic member 43 can make the second support rod 41 rotate in the opposite direction, thereby knocking the outer wall of the cooling plate 22 to make the outer wall of the cooling plate 22 vibrate, further reducing the possibility of crystal adhesion.

[0044] In this embodiment, the first elastic member 33 and the second elastic member 43 may also be configured as torsion springs.

[0045] Reference Figure 4 The linkage mechanism 5 is disposed between the first knocking mechanism 3 and the second knocking mechanism 4, and is used to drive the first knocking mechanism 3 and the second knocking mechanism 4 to operate. The linkage mechanism 5 includes a first gear 51, a second gear 52, a gearing 54 and a spring 55. The first gear 51 is coaxially fixedly connected to the top of the first support rod 31, and the second gear 52 is coaxially fixedly connected to the top of the second support rod 41.

[0046] Reference Figure 4 and Figure 5 , the meshing member 54 is arranged between the first gear 51 and the second gear 52, and the meshing member 54 includes a first rack 541, a second rack 542, a connecting rod 543 and a slider 544. The teeth of the first rack 541 and the second rack 542 face away from each other, the first rack 541 is used to mesh with the first gear 51, and the second rack 542 is used to mesh with the second gear 52; the connecting rod 543 is fixedly connected between the first rack 541 and the second rack 542, so that the meshing member 54 is a whole; the slider 544 is fixedly connected to the bottom wall of the second rack 542. The slide rail 53 is fixedly connected to the top wall of the topmost cooling plate 22, and the slide rail 53 is arranged in an arc shape, and the center line of the slide rail 53 is coaxial with the axis of the rotating rod 21. The slider 544 at the bottom end of the second rack 542 is slidably arranged in the slide rail 53, and the spring 55 is fixedly connected between the slider 544 and the end of the slide rail 53. In a normal state, the spring 55 is at its original length, and the second rack 542 and the second gear 52 are in meshing state.

[0047] Reference Figure 4 , Figure 6 and Figure 7 The elastic coefficient of the first elastic member 33 is greater than the elastic coefficient of the second elastic member 43 and the spring 55. Therefore, in the process of the rotating rod 21 driving the cooling plate 22 to rotate, when the first rack 541 engages with the first gear 51, since the rotation of the first elastic member 33 is more laborious, the first gear 51 will limit the rotation of the engaging member 54, and the engaging member 54 will be in a stationary state, while the cooling plate 22 and the slide rail 53 are still rotating, so that the engaging member 54 slides relative to the slide rail 53 toward the side away from the spring 55; since the engaging member 54 is engaged with the second gear 52, the relative sliding of the engaging member 54 will cause the second gear 52 to rotate, thereby causing the second support rod 41 and the second knocking block 42 to rotate toward the side away from the cooling plate 22. When the engaging member 54 slides relatively to the end of the slide rail 53 away from one end of the spring 55, the slider 544 in the engaging member 54 presses against the end of the slide rail 53. At this time, the cooling plate 22 forces the engaging member 54 to rotate through the slide rail 53. Since the engaging member 54 is engaged with the first gear 51, the first gear 51 can be rotated, thereby causing the first support rod 31 and the first knocking block 32 to rotate toward the side away from the inner wall of the tank body 1.

[0048] That is, the rotation of the cooling plate 22 can make the second knocking block 42 and the first knocking block 32 rotate outward successively. When the meshing member 54 is disengaged from the first gear 51, the restriction of the meshing member 54 on the first gear 51 is lost, and the first gear 51 will rotate in the opposite direction, so that the first support rod 31 and the first knocking block 32 rotate, and the first knocking block 32 knocks the inner wall of the tank body 1. When the meshing member 54 is disengaged from the first gear 51, the restriction of the first gear 51 on the meshing member 54 is lost, and the meshing member 54 slides relative to the slide rail 53 toward the side close to the spring 55, so that the second gear 52 rotates, the second support rod 41 and the second knocking block 42 rotate, and the second knocking block 42 knocks the outer wall of the cooling plate 22.

[0049] Among them, refer to Figure 2 The first knocking block 32 and the second knocking block 42 are both provided with a plurality of through holes 6, so that when the first knocking block 32 and the second knocking block 42 rotate in the resetting direction under the action of their respective coil springs, part of the raw material liquid can pass through the through holes 6, reducing the resistance encountered by the first knocking block 32 and the second knocking block 42 during the resetting process, thereby ensuring the vibration effect caused by knocking. Flexible pads are also bonded and fixed to the outer walls of the first knocking block 32 and the second knocking block 42. The flexible pads are rubber pads, and the flexible pads are relatively thin. Therefore, while protecting the first knocking block 32 and the second knocking block 42, the effect of the setting of the flexible pads on the vibration effect caused by knocking can also be reduced.

[0050] The implementation principle of a suspended melt crystallization system in the embodiment of the present application is as follows: the raw material liquid is added to the tank body 1, and under the action of the pump body 231, the cooling liquid flows into the first flow channel 221, so that the cooling plate 22 can exchange heat with the raw material liquid in the tank body 1, cool the raw material liquid, and accelerate the precipitation of crystals in the raw material liquid. After heat exchange, the cooling liquid in the first flow channel 221 flows into the branch pipe 8 through the infusion tube 12, then flows into the liquid storage ring 10 through the connecting ring 9, and then flows into the second flow channel 11, so that the cooling liquid in the inner wall of the tank body 1 can exchange heat with the raw material liquid again, enhancing the cooling effect on the raw material liquid. Then, after the cooling liquid in the second flow channel 11 is treated by the heat dissipation and cooling of the radiator 232, it flows back to the pump body 231 and the first flow channel 221 to circulate the cooling liquid.

[0051] During the process, the rotating power part 241 is started, and with the cooperation of the driving gear 242 and the driven gear 243, the rotating rod 21 can be rotated, and the rotating rod 21 drives the cooling plate 22 to rotate, so that the cooling plate 22 and the raw material liquid are in more complete contact, which helps to improve the heat exchange efficiency.

[0052] When the cooling plate 22 rotates, it can drive the slide rail 53 and the meshing member 54 to rotate. In the initial state, the spring 55 is at its original length, the meshing member 54 is meshed with the second gear 52, the first knocking block 32 is pressed against the inner wall of the tank body 1, and the second knocking block 42 is pressed against the outer wall of the cooling plate 22. As the cooling plate 22 rotates, the meshing member 54 is meshed with the first gear 51, so that the second knocking block 42 and the first knocking block 32 rotate; then the meshing member 54 is disengaged from the first gear 51, and under the action of the second elastic member 43 and the first elastic member 33, the second knocking block 42 and the first knocking block 32 can be reversely rotated and reset, thereby achieving the knocking of the outer wall of the cooling plate 22 and the inner wall of the tank body 1, further reducing the possibility of crystal wall formation, which helps to ensure the heat exchange efficiency.

[0053] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A suspension melt crystallization system, characterized in that: It comprises a tank body (1), and a cooling mechanism (2), a first knocking mechanism (3), a second knocking mechanism (4), and a linkage mechanism (5) arranged in the tank body (1); The cooling mechanism (2) comprises a rotating rod (21), a cooling plate (22), a coolant circulation assembly (23) and a driving assembly (24); the rotating rod (21) is rotatably connected to the tank body (1); the cooling plate (22) is arranged on the rotating rod (21); a first flow channel (221) for the coolant to flow is provided in the cooling plate (22); a second flow channel (11) for the coolant to flow is provided in the side wall of the tank body (1); the first flow channel (221) and the second flow channel (11) are connected; the coolant circulation assembly (23) and the driving assembly (24) are both arranged on the tank body (1); two ends of the coolant circulation assembly (23) are respectively connected to the first flow channel (221) and the second flow channel (11), so that the coolant can circulate between the first flow channel (221) and the second flow channel (11); and the driving assembly (24) is used to drive the rotating rod (21) to rotate; The first knocking mechanism (3) comprises a first support rod (31), a first knocking block (32) and a first elastic member (33); the first support rod (31) is arranged along the axis direction of the tank body (1) and is rotatably connected to the inner wall of the tank body (1); the first knocking block (32) is fixedly connected to the first support rod (31); and the first elastic member (33) is connected between the first support rod (31) and the tank body (1), so that the first knocking block (32) is pressed against the inner wall of the tank body (1) at the second flow channel (11); The second knocking mechanism (4) comprises a second support rod (41), a second knocking block (42) and a second elastic member (43); the second support rod (41) is arranged along the axis direction of the tank body (1) and is rotatably connected to the cooling plate (22); the second knocking block (42) is fixedly connected to the second support rod (41); and the second elastic member (43) is connected between the second support rod (41) and the cooling plate (22), so that the second knocking block (42) is pressed against the outer wall of the cooling plate (22); The linkage mechanism (5) is arranged between the first knocking mechanism (3) and the second knocking mechanism (4), so that when the cooling plate (22) rotates along with the rotating rod (21), the second knocking block (42) and the first knocking block (32) can rotate successively, and then the second knocking block (42) rotates in the opposite direction until it is pressed against the cooling plate (22), and the first knocking block (32) rotates in the opposite direction until it is pressed against the inner wall of the tank body (1).

2. A suspension melt crystallization system according to claim 1, characterized in that: The linkage mechanism (5) comprises a first gear (51), a second gear (52), a slide rail (53), a meshing member (54) and a spring (55); the first gear (51) is coaxially fixedly connected to the first support rod (31); the second gear (52) is coaxially fixedly connected to the second support rod (41); the slide rail (53) is fixedly connected to the cooling plate (22); the slide rail (53) is arranged between the first gear (51) and the second gear (52); the slide rail (53) is arranged in an arc shape; the meshing member (54) is slidably arranged on the slide rail (53); and the spring (55) is connected between the meshing member (54) and the slide rail (53); The meshing member (54) comprises a first rack (541), a second rack (542) and a connecting rod (543), wherein the connecting rod (543) is fixedly connected between the first rack (541) and the second rack (542), wherein the first rack (541) is used to mesh with the first gear (51), and the second rack (542) is used to mesh with the second gear (52), and the elastic coefficient of the first elastic member (33) is greater than the elastic coefficient of the second elastic member (43) and the spring (55), so that the cooling plate ( 22) As the rotating rod (21) rotates, the engaging member (54) slides toward the side away from the spring (55), causing the second gear (52) to rotate, and the second knocking block (42) to rotate toward the side away from the cooling plate (22). Then, the engaging member (54) drives the first gear (51) to rotate, and the first knocking block (32) to rotate toward the side away from the inner wall of the tank body (1). Then, the first knocking block (32) and the second knocking block (42) rotate in opposite directions to knock the inner wall of the tank body (1) and the outer wall of the cooling plate (22) respectively.

3. A suspension melt crystallization system according to claim 2, characterized in that: The linkage mechanism (5) is arranged at the top of the tank body (1).

4. A suspension melt crystallization system according to claim 1, characterized in that: The first knocking block (32) and the second knocking block (42) are both provided with a through hole (6) for the raw material liquid to pass through.

5. A suspension melt crystallization system according to claim 1, characterized in that: Flexible pads are provided on both the first knocking block (32) and the second knocking block (42).

6. A suspension melt crystallization system according to claim 1, characterized in that: A connecting pipe (7) connected to a coolant circulation assembly (23) is fixedly connected to the top wall of the tank body (1); the connecting pipe (7) is rotatably connected to the top of the rotating rod (21); the top of the first flow channel (221) extends to the top of the rotating rod (21), and the top of the first flow channel (221) is in communication with the connecting pipe (7).

7. A suspension melt crystallization system according to claim 6, characterized in that: The driving assembly (24) comprises a rotating power member (241), a driving gear (242) and a driven gear (243); the rotating power member (241) is fixedly arranged on the tank body (1); the driving gear (242) is coaxially fixedly connected to the output end of the rotating power member (241); the driven gear (243) is coaxially fixedly connected to the rotating rod (21); and the driving gear (242) and the driven gear (243) are meshed with each other.

8. A suspension melt crystallization system according to claim 1, characterized in that: The bottom end of the rotating rod (21) is vertically fixedly connected to a branch pipe (8); the end of the first flow channel (221) is connected to the branch pipe (8); a connecting ring (9) is fixedly connected to the branch pipe (8); a cavity connected to the connecting ring (9) is provided in the connecting ring (9); a liquid storage ring (10) is fixedly connected to the bottom wall of the tank body (1); a cavity connected to the second flow channel (11) is provided in the liquid storage ring (10); the connecting ring (9) and the liquid storage ring (10) are rotatably connected and connected to each other.

9. A suspension melt crystallization system according to claim 8, characterized in that: A plurality of the first flow channels (221) are provided, the number of the first flow channels (221) being the same as the number of the cooling plates (22), each of the first flow channels (221) being provided in a corresponding cooling plate (22), a liquid infusion tube (12) being fixedly connected to the cooling plate (22), and the liquid infusion tube (12) being connected between the bottom end of the first flow channel (221) and the branch pipe (8).

10. A suspension melt crystallization system according to claim 8, characterized in that: The outer fixed sleeve of the liquid storage ring (10) is provided with a separation ring (13), and a gap for accommodating air is provided between the inner wall of the separation ring (13) and the outer wall of the liquid storage ring (10).

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