Oleic acid freezing separation crystallizer

Abstract

The invention belongs to the technical field of oleic acid freezing separation crystallization, and discloses an oleic acid freezing separation crystallizer which comprises a working shell, supporting frames are fixedly connected to the periphery of the bottom of the working shell, a top cover is fixedly connected to the top of the working shell, and a rotating shaft drives a reciprocating lead screw to rotate so as to drive a threaded plate to move up and down along a limiting rod. The vertical rod and the piston plate are driven to lift. And the piston plate extrudes the cooling liquid in the round box, so that the cooling liquid enters the conversion box through the second connecting pipe, the cooling pipe and the inclined pipe and is cooled under the action of the condenser. Cooling liquid flows back through the conversion box and returns to the round box through the cooling pipe and the first connecting pipe, circulation flowing is achieved, it is ensured that the cooling effect is continuously conducted, when cooling water flows in the round box, centrifugal force is generated due to rotation of the round box, impurities in water are diffused all around, the impurities are conveniently adsorbed by the inner wall activated carbon sleeve, and therefore the cooling water is kept clean; flow speed reduction is avoided, and efficient cooling of oleic acid by the cooling pipe is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oleic acid freezing separation crystallization, and specifically relates to an oleic acid freezing separation crystallizer. BACKGROUND

[0002] The oleic acid freezing separation crystallizer is a method and equipment for separating oleic acid from oil, and the separation and purification of fatty acids are usually achieved by controlling temperature and crystallization process. The equipment is widely used in the oil processing, chemical industry, food, cosmetics and other industries, especially in the treatment of unsaturated fatty acids in animal and vegetable oils. The basic principle is to lower the temperature, use the solubility difference of oleic acid at different temperatures to make it crystallize, and separate out the insoluble oleic acid.

[0003] The prior art uses cooling water to cool the oleic acid. When the cooling water is used for a long time, minerals, algae or other impurities in the water may deposit in the pipeline, forming scale or blockage, causing poor water flow, and the heat exchange between the cooling water and the oleic acid may not be sufficient. This will cause the oleic acid to be unable to be effectively cooled, thereby affecting the freezing separation effect and reducing the overall performance of the system. SUMMARY

[0004] To solve the problem of poor flow of cooling water in the background art, the application provides an oleic acid freezing separation crystallizer.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: an oleic acid freezing separation crystallizer, comprising a working shell, a support frame is fixedly connected around the bottom of the working shell, a top cover is fixedly connected to the top of the working shell, a discharge pipe is communicated with the bottom of the working shell, an inlet pipe is communicated with one side of the top of the top cover, further comprising a freezing separation mechanism, the freezing separation mechanism comprises a motor fixedly connected to the top of the top cover, an output end of the motor is fixedly connected with a rotating shaft, both ends of the outer wall of the rotating shaft are fixedly connected with stirring paddles, and a cooling assembly is arranged on the outer wall of the rotating shaft for freezing the oleic acid.

[0006] Preferably, the cooling assembly comprises a circular box fixedly connected to the top end of the rotating shaft, a reciprocating screw rod is fixedly connected to the outer wall of one end of the circular box, limit rods are fixedly connected to the inner wall top of the top cover on both sides, and a threaded plate is threadedly connected to the outer wall of one end of the reciprocating screw rod.

[0007] Preferably, one end of the limit rod penetrates through the threaded plate and extends to the outside of the threaded plate, vertical rods are fixedly connected to the bottom of the threaded plate on both sides, a piston plate is fixedly connected to the bottom of the vertical rod, and an activated carbon sleeve is fixedly connected to the inner wall of the circular box.

[0008] Preferably, the outer wall of the piston plate is slidingly connected at the inner wall of the activated carbon sleeve, the bottom end of the vertical rod is rotatably connected at the top of the circular box, the outer wall of the top end of the circular box is communicated with the first connecting pipe at one side, and the outer wall of the bottom end of the circular box is communicated with the second connecting pipe at one side.

[0009] Preferably, the bottom of the circular box is fixedly connected with a bottom plate, the outer walls of the two sides of the bottom plate are fixedly connected with connecting plates, one end of the connecting plate is fixedly connected with a support frame rod, the outer wall of the middle end of the support frame rod is fixedly connected with a cooling pipe, and one end of the first connecting pipe and the second connecting pipe is communicated at the top of the cooling pipe.

[0010] Preferably, the two support frame rods are fixedly connected with a horizontal plate, the bottom of the horizontal plate is fixedly connected with a conversion box, the inner wall of the conversion box is fixedly connected with a condenser at the bottom, the bottom of the cooling pipe is communicated with an inclined pipe, and one end of the inclined pipe is communicated at the outer wall of the conversion box.

[0011] Preferably, the bottom of the conversion box is provided with a stirring assembly, the stirring assembly comprises a four-corner fixed frame fixedly connected at the bottom of the conversion box, four scraping plates are fixedly connected around the bottom of the four-corner fixed frame, and the bottom of the scraping plate is in contact with the inner wall of the support frame at the bottom.

[0012] Preferably, the outer wall of the cooling pipe is provided with an auxiliary assembly, the auxiliary assembly comprises a fixed sleeve fixedly connected at the outer wall of the top end of the cooling pipe, and the outer wall of the fixed sleeve is rotatably connected with a toothed disc.

[0013] Preferably, the outer wall of the toothed disc is meshingly connected with a toothed ring at one side, the outer wall of the toothed ring is fixedly connected at the inner wall of the working shell, the bottom of the toothed disc is fixedly connected with a round rod around the four corners, and the outer wall of the round rod is fixedly connected with a connecting sleeve.

[0014] Preferably, a plurality of ecological stirring paddles are fixedly connected at one side of the outer wall of the connecting sleeve, a cleaning strip is fixedly connected at the side of the connecting sleeve away from the ecological stirring paddles, and one side of the cleaning strip is in contact with the outer wall of the cooling pipe.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The application sets the freezing separation mechanism, the oleic acid is input to the inside of the working shell through the feeding pipe, the motor is started, the motor drives the rotating shaft and the stirring paddle to rotate, the stirring paddle realizes the separation effect in the stirring process of the oleic acid, is cooled by the cooling water in the cooling pipe, and assists the freezing separation of the oleic acid in the stirring process. When the rotating shaft rotates, the rotating shaft drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the threaded plate to reciprocate along the outer wall of the limiting rod in the rotating process, the threaded plate drives the vertical rod and the piston plate to reciprocate, and the piston plate can extrude the cooling liquid stored in the circular box in the reciprocating process in the circular box. When the piston plate slides downward, the cooling liquid enters the inside of the second connecting pipe, the cooling water enters the inside of the cooling pipe through the second connecting pipe, the cooling water enters the inside of the inclined pipe through the cooling pipe, and the cooling water enters the inside of the conversion box through the inclined pipe. The condenser in the conversion box cools the cooling water flowing in the conversion box. The cooling water enters the inclined pipe on the other side through the conversion box, and then enters the inside of the first connecting pipe through the cooling pipe on the other side. The cooling water flows back to the inside of the circular box through the first connecting pipe. When the piston plate reciprocates, the cooling water is reset, so that the cooling water is in a flowing state in the cooling assembly at all times, and the freezing effect of the cooling pipe on the oleic acid is improved.

[0017] The application sets the freezing separation mechanism, when the rotating shaft rotates, the rotating shaft drives the circular box and the bottom plate to rotate, the bottom plate drives the connecting plate and the support frame rod to rotate, the support frame rod drives the cooling pipe to rotate, and the cooling pipe rotates in the inside of the working shell, so that the contact area of the cooling pipe and the oleic acid is increased. This helps to improve the cooling effect, so that the cooling pipe can take away the heat of the oleic acid more quickly. As the bottom end of the vertical rod is arranged in the inner wall of the rotating ring at the top of the circular box, the rotating ring rotates at the top of the circular box, as shown in Figure Five When the cooling water flows in the inside of the circular box, because the circular box is continuously in a rotating state, the centrifugal force generated by the cooling water flowing in the circular box makes the fine impurities carried by the cooling water move to the periphery, so that the activated carbon sleeve fixed on the inner wall of the circular box can adsorb the impurities, and the cooling water becomes cleaner, so that the flow rate of the cooling water in the cooling assembly is prevented from slowing down, and the cooling effect of the cooling pipe on the oleic acid is ensured. When the support frame rod rotates, the support frame rod drives the horizontal plate and the conversion box to rotate, the conversion box drives the four-corner fixing frame and the scraping plate to rotate, and the scraping plate can scrape and stir the bottom of the inner wall of the working shell in the rotating process, so that the oleic acid is prevented from staying at the bottom of the working shell and affecting the cooling effect of the cooling pipe on the oleic acid.

[0018] The application sets the frozen separation mechanism, when the cooling pipe rotates, the cooling pipe drives the fixed sleeve and the gear plate to rotate, the gear plate will mesh with the gear teeth of the gear ring in the rotating process, so that the gear plate rotates around the fixed sleeve, the gear plate drives the round rod and the cleaning strip to rotate, the cleaning strip can clean the outer wall of the cooling pipe in the rotating process, prevent the oleic acid from adhering and accumulating on the outer wall of the cooling pipe, affect the conduction of the cooling water in the cooling pipe to the temperature, improve the cooling effect of the cooling pipe, and when the connecting sleeve rotates, a plurality of ecological stirring paddles can be driven to rotate, the oleic acid in the working shell can be close to the cooling pipe in the rotating process of the ecological stirring paddle, so that the cooling pipe can work on the oleic acid at close range, ensure that the oleic acid can be more evenly contacted with the cooling pipe, thereby enhancing the heat exchange between the cooling pipe and the oleic acid. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole side structure schematic diagram of the application;

[0020] Figure 2 It is the top cover sectional structure schematic diagram of the application;

[0021] Figure 3 It is the motor side structure schematic diagram of the application;

[0022] Figure 4 It is the working shell of the application; Figure 3 It is the enlarged view of A in the application;

[0023] Figure 5 It is the working shell of the application;

[0024] Figure 6 It is the ecological stirring paddle side structure schematic diagram of the application;

[0025] Figure 7 It is the enlarged view of B in the application; Figure 6

[0026] It is the activated carbon sleeve sectional structure schematic diagram of the application; Figure 8

[0027] It is the gear plate bottom structure schematic diagram of the application. Figure 9

[0028] ​In the diagram: 1. Working shell; 2. Support frame; 3. Top cover; 4. Discharge pipe; 5. Feed pipe; 6. Freezing and separation mechanism; 61. Motor; 62. Rotating shaft; 63. Stirring paddle; 65. Cooling assembly; 66. Stirring assembly; 67. Auxiliary assembly; 651. Circular box; 652. Reciprocating screw; 653. Limiting rod; 654. Threaded plate; 655. Vertical rod; 656. Piston plate; 657. Activated carbon sleeve; 658. First connecting pipe; 59. Second connecting pipe; 6510. Base plate; 6511. Connecting plate; 6512. Support rod; 6513. Cooling pipe; 6514. Inclined pipe; 6515. Horizontal plate; 6516. Conversion box; 6517. Condenser; 661. Four-corner fixing bracket; 662. Scraper; 671. Fixing sleeve; 672. Gear disc; 673. Gear ring; 677. Round rod; 674. Connecting sleeve; 675. Ecological stirring paddle; 676. Cleaning strip. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 9 As shown, the present invention provides an oleic acid cryogenic separation crystallizer, including a working shell 1, a support frame 2 fixedly connected to the bottom four sides of the working shell 1, a top cover 3 fixedly connected to the top of the working shell 1, a discharge pipe 4 connected to the bottom of the working shell 1, and a feed pipe 5 connected to one side of the top of the top cover 3, and also includes;

[0031] The freezing separation mechanism 6 includes a motor 61 fixedly connected to the top of the top cover 3. The output end of the motor 61 is fixedly connected to a rotating shaft 62. Both ends of the outer wall of the rotating shaft 62 are fixedly connected to a stirring paddle 63. The outer wall of the rotating shaft 62 is provided with a cooling component 65 for freezing oleic acid.

[0032] Oleic acid is fed into the working shell 1 through the feed pipe 5. The motor 61 is started, and the motor 61 drives the rotating shaft 62 and the stirring paddle 63 to rotate. The stirring paddle 63 achieves the separation effect during the stirring of oleic acid.

[0033] The cooling assembly 65 includes a circular box 651 fixedly connected to the top of the rotating shaft 62. A reciprocating screw 652 is fixedly connected to the outer wall of one end of the rotating shaft 62 near the circular box 651. Limiting rods 653 are fixedly connected to both sides of the top of the inner wall of the top cover 3. A threaded plate 654 is threadedly connected to the outer wall of one end of the reciprocating screw 652.

[0034] One end of the limiting rod 653 penetrates the threaded plate 654 and extends to the outside of the threaded plate 654, the bottom of the threaded plate 654 is fixedly connected with a vertical rod 655 on both sides, the bottom of the vertical rod 655 is fixedly connected with a piston plate 656, and the inner wall of the circular box 651 is fixedly connected with an activated carbon sleeve 657.

[0035] The outer wall of the piston plate 656 is slidably connected to the inner wall of the activated carbon sleeve 657, the bottom end of the vertical rod 655 is rotatably connected to the top of the circular box 651, one side of the outer wall of the top of the circular box 651 is communicated with a first connecting pipe 658, and one side of the outer wall of the bottom of the circular box 651 is communicated with a second connecting pipe 659.

[0036] With the above scheme: when the cooling water flows in the circular box 651, the impurities in the water are diffused to the surrounding due to the centrifugal force generated by the rotation of the circular box 651, which facilitates the activated carbon sleeve 657 on the inner wall to adsorb the impurities, so as to keep the cooling water clean, avoid the flow rate to slow down, and ensure the efficient cooling of the cooling pipe 6513 to the oleic acid.

[0037] The bottom of the circular box 651 is fixedly connected with a bottom plate 6510, the outer walls of the bottom plate 6510 are fixedly connected with connecting plates 6511 on both sides, one end of the connecting plate 6511 is fixedly connected with a support frame rod 6512, the outer wall of the middle end of the support frame rod 6512 is fixedly connected with a cooling pipe 6513, and one end of the first connecting pipe 658 and the second connecting pipe 659 is communicated with the top of the cooling pipe 6513.

[0038] With the above scheme: when the rotating shaft 62 rotates, the rotating shaft 62 drives the circular box 651 and the bottom plate 6510 to rotate, the bottom plate 6510 drives the connecting plate 6511 and the support frame rod 6512 to rotate, and the support frame rod 6512 drives the cooling pipe 6513 to rotate, so that the cooling pipe 6513 rotates in the inside of the working shell 1.

[0039] The two support frame rods 6512 are fixedly connected with a horizontal plate 6515, the bottom of the horizontal plate 6515 is fixedly connected with a conversion box 6516, the inner wall of the conversion box 6516 is fixedly connected with a condenser 6517 at the bottom, the bottom of the cooling pipe 6513 is communicated with a inclined pipe 6514, and one end of the inclined pipe 6514 is communicated with one side of the outer wall of the conversion box 6516.

[0040] With the above scheme: the rotating shaft 62 drives the reciprocating wire rod 652 to rotate, and then drives the threaded plate 654 to move up and down along the limiting rod 653, drives the vertical rod 655 and the piston plate 656 to ascend and descend. The piston plate 656 extrudes the cooling liquid in the circular box 651, so that the cooling liquid enters the conversion box 6516 through the second connecting pipe 659, the cooling pipe 6513 and the inclined pipe 6514, and is cooled under the action of the condenser 6517. The cooling liquid flows back through the conversion box 6516, passes through the cooling pipe 6513 and the first connecting pipe 658 to return to the circular box 651, realizes circulating flow, and ensures that the cooling effect continues.

[0041] As Figures 1 to 9 The bottom of the conversion box 6516 is provided with a stirring assembly 66, which comprises a four-corner fixing frame 661 fixedly connected to the bottom of the conversion box 6516, and four scraping plates 662 fixedly connected to the bottom of the four-corner fixing frame 661.

[0042] With the above scheme, when the support frame rod 6512 rotates, the support frame rod 6512 drives the horizontal plate 6515 and the conversion box 6516 to rotate, and the conversion box 6516 drives the four-corner fixing frame 661 and the scraping plate 662 to rotate, so that the scraping plate 662 can scrape and stir the inner wall bottom of the working shell 1 during rotation.

[0043] The outer wall of the cooling pipe 6513 is provided with an auxiliary assembly 67, which comprises a fixed sleeve 671 fixedly connected to the outer wall of the top end of the cooling pipe 6513, and a toothed disc 672 rotationally connected to the outer wall of the fixed sleeve 671.

[0044] The outer wall of the toothed disc 672 is meshingly connected to a toothed ring 673, and the outer wall of the toothed ring 673 is fixedly connected to the inner wall of the working shell 1. The bottom of the toothed disc 672 is fixedly connected to a plurality of round rods 677, and the outer wall of the round rod 677 is fixedly connected to a connecting sleeve 674.

[0045] The outer wall of the connecting sleeve 674 is fixedly connected to a plurality of ecological stirring paddles 675 on one side, and the side of the connecting sleeve 674 away from the ecological stirring paddles 675 is fixedly connected to a cleaning strip 676, and one side of the cleaning strip 676 is in contact with the outer wall of the cooling pipe 6513.

[0046] With the above scheme, when the cooling pipe 6513 rotates, the fixed sleeve 671 and the toothed disc 672 are driven to rotate. The toothed disc 672 meshes with the toothed ring 673 and rotates around the fixed sleeve 671, thereby driving the round rod 677 and the cleaning strip 676 to rotate. The cleaning strip 676 effectively cleans the outer wall of the cooling pipe 6513 during rotation.

[0047] The working principle and use process of the present application are as follows:

[0048] The oil is input into the interior of the working shell 1 through the feeding pipe 5, the motor 61 is started, the motor 61 drives the rotating shaft 62 and the stirring paddle 63 to rotate, the stirring paddle 63 realizes the separation effect in the stirring process of the oil, and the oil in the stirring process is cooled by the cooling water in the interior of the cooling pipe 6513, and the oil in the stirring process is cooled by the cooling water in the interior of the cooling pipe 6513. When the rotating shaft 62 rotates, the rotating shaft 62 drives the reciprocating screw rod 652 to rotate, the reciprocating screw rod 652 drives the threaded plate 654 to reciprocatingly move up and down along the outer wall of the limiting rod 653 in the rotating process, the threaded plate 654 drives the vertical rod 655 and the piston plate 656 to move up and down, and the piston plate 656 can extrude the cooling liquid stored in the interior of the circular box 651 in the process of moving up and down in the circular box 651. When the piston plate 656 slides downward, the cooling liquid enters the interior of the second connecting pipe 659, the cooling water enters the interior of the cooling pipe 6513 through the second connecting pipe 659, the cooling water enters the interior of the inclined pipe 6514 through the cooling pipe 6513, the cooling water enters the interior of the conversion box 6516 through the inclined pipe 6514, and the cooling water is cooled by the condenser 6517 in the interior of the conversion box 6516. The cooling water enters the other side of the inclined pipe 6514 through the conversion box 6516, and then enters the interior of the first connecting pipe 658 through the other side of the cooling pipe 6513. The cooling water flows back to the interior of the circular box 651 through the first connecting pipe 658. When the piston plate 656 moves upward, the cooling water moves back, so that the cooling water is in a flowing state in the cooling assembly 65 at all times, and the cooling effect of the cooling pipe 6513 on the oil is improved.

[0049] When the rotating shaft 62 rotates, the rotating shaft 62 drives the circular box 651 and the bottom plate 6510 to rotate, the bottom plate 6510 drives the connecting plate 6511 and the support frame rod 6512 to rotate, the support frame rod 6512 drives the cooling pipe 6513 to rotate, and the cooling pipe 6513 rotates in the interior of the working shell 1, thereby increasing the contact area of the cooling pipe 6513 and the oil. This helps to improve the cooling effect, so that the cooling pipe 6513 can more quickly take away the heat of the oil. Since the bottom end of the vertical rod 655 is arranged in the inner wall of the rotating ring at the top of the circular box 651, the rotating ring rotates at the top of the circular box 651, and the vertical rod 655 rotates in the rotating ring, the vertical rod 655 is driven by the rotating shaft 62 to rotate, and the vertical rod 655 drives the piston plate 656 to move up and down. Figure FiveAs shown, the vertical rod 655 can prevent the round box 651 from being stuck during the lifting process, ensuring the stability of the device operation. When the cooling water flows inside the round box 651, the centrifugal force generated by the continuous rotation of the round box 651 causes the fine impurities carried in the cooling water flow to move outward, so that the activated carbon sleeve 657 fixed on the inner wall of the round box 651 can adsorb the impurities, making the cooling water cleaner, thereby preventing the flow rate of the cooling water inside the cooling assembly 65 from slowing down, and ensuring the cooling effect of the cooling pipe 6513 on the oleic acid. When the support rod 6512 rotates, the support rod 6512 drives the horizontal plate 6515 and the conversion box 6516 to rotate, and the conversion box 6516 drives the four-corner fixing frame 661 and the scraping plate 662 to rotate. The scraping plate 662 can scrape and stir the bottom of the inner wall of the working shell 1 during rotation, preventing the oleic acid from staying at the bottom of the working shell 1 and affecting the cooling effect of the cooling pipe 6513 on the oleic acid.

[0050] When the cooling pipe 6513 rotates, the cooling pipe 6513 drives the fixed sleeve 671 and the toothed disc 672 to rotate. The toothed disc 672 will mesh with the teeth of the toothed ring 673 during rotation, so that the toothed disc 672 rotates around the fixed sleeve 671. The toothed disc 672 drives the round rod 677 and the cleaning strip 676 to rotate. The cleaning strip 676 can clean the outer wall of the cooling pipe 6513 during rotation, preventing the oleic acid from adhering and accumulating on the outer wall of the cooling pipe 6513, affecting the temperature conduction of the cooling water inside the cooling pipe 6513, and improving the cooling effect of the cooling pipe 6513. When the connecting sleeve 674 rotates, it can drive multiple ecological stirring paddles 675 to rotate. The ecological stirring paddles 675 can make the oleic acid inside the working shell 1 approach the cooling pipe 6513 during rotation, so that the cooling pipe 6513 can cool the oleic acid at close range, ensuring that the oleic acid can more evenly contact the cooling pipe 6513, thereby enhancing the heat exchange between the cooling pipe 6513 and the oleic acid.

[0051] It should be noted that, in the present document, the terms such as first and second, etc., are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0052] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. An oleic acid cryogenic separation crystallizer, comprising a working shell (1), wherein support frames (2) are fixedly connected to the bottom four sides of the working shell (1), a top cover (3) is fixedly connected to the top of the working shell (1), a discharge pipe (4) is connected to the bottom of the working shell (1), and a feed pipe (5) is connected to one side of the top of the top cover (3), characterized in that: Also includes; The refrigeration separation mechanism (6) includes a motor (61) fixedly connected to the top of the top cover (3), the output end of the motor (61) is fixedly connected with a rotating shaft (62), the outer wall of the rotating shaft (62) is fixedly connected with a stirring paddle (63) at both ends, and the outer wall of the rotating shaft (62) is provided with a cooling assembly (65) for freezing work of oleic acid.

2. The oleic acid freeze separation crystallizer of claim 1, wherein: The cooling assembly (65) includes a circular box (651) fixedly connected to the top end of the rotating shaft (62), the outer wall of one end of the rotating shaft (62) close to the circular box (651) is fixedly connected with a reciprocating screw rod (652), and the inner wall top of the top cover (3) is fixedly connected with a limiting rod (653) on both sides.

3. The oleic acid freeze separation crystallizer of claim 2, wherein: One end of the limiting rod (653) penetrates through the threaded plate (654) and extends to the outside of the threaded plate (654), the bottom of the threaded plate (654) is fixedly connected with a vertical rod (655) on both sides, the bottom of the vertical rod (655) is fixedly connected with a piston plate (656), and the inner wall of the circular box (651) is fixedly connected with an activated carbon sleeve (657).

4. The oleic acid freeze separation crystallizer of claim 3, wherein: The outer wall of the piston plate (656) is slidingly connected to the inner wall of the activated carbon sleeve (657), the bottom end of the vertical rod (655) is rotatably connected to the top of the circular box (651), one side of the outer wall of the top end of the circular box (651) is communicated with a first connecting pipe (658), and one side of the outer wall of the bottom end of the circular box (651) is communicated with a second connecting pipe (659).

5. The oleic acid freeze separation crystallizer of claim 4, wherein: The bottom of the circular box (651) is fixedly connected with a bottom plate (6510), the outer wall of the bottom plate (6510) is fixedly connected with a connecting plate (6511) on both sides, one end of the connecting plate (6511) is fixedly connected with a support frame rod (6512), the outer wall of the middle end of the support frame rod (6512) is fixedly connected with a cooling pipe (6513), and one end of the first connecting pipe (658) and the second connecting pipe (659) is communicated with the top of the cooling pipe (6513).

6. The oleic acid freeze separation crystallizer of claim 5, wherein: Two support frame rods (6512) are fixedly connected with a horizontal plate (6515), the bottom of the horizontal plate (6515) is fixedly connected with a conversion box (6516), the inner wall bottom of the conversion box (6516) is fixedly connected with a condenser (6517), the bottom of the cooling pipe (6513) is communicated with an inclined pipe (6514), and one end of the inclined pipe (6514) is communicated with one side of the outer wall of the conversion box (6516).

7. The oleic acid freeze separation crystallizer of claim 6, wherein: The bottom of the conversion box (6516) is provided with a stirring assembly (66), the stirring assembly (66) includes a four-corner fixing frame (661) fixedly connected to the bottom of the conversion box (6516), four scraping plates (662) are fixedly connected to the bottom of the four-corner fixing frame (661) around, and the bottom of the scraping plate (662) contacts the inner wall bottom of the support frame (2).

8. The oleic acid freeze separation crystallizer of claim 7, wherein: The outer wall of the cooling pipe (6513) is provided with an auxiliary assembly (67), which comprises a fixed sleeve (671) fixedly connected to the outer wall of the top end of the cooling pipe (6513), and the outer wall of the fixed sleeve (671) is rotatably connected with a toothed disc (672).

9. The oleic acid freeze separation crystallizer of claim 8, wherein: The outer wall of the toothed disc (672) is meshingly connected with a toothed ring (673) on one side, the outer wall of the toothed ring (673) is fixedly connected to the inner wall of the working shell (1), the bottom of the toothed disc (672) is fixedly connected with a round rod (677) around, and the outer wall of the round rod (677) is fixedly connected with a connecting sleeve (674).

10. The oleic acid freeze separation crystallizer of claim 9, wherein: The outer wall of the connecting sleeve (674) is fixedly connected with a plurality of ecological stirring paddles (675) on one side, the side of the connecting sleeve (674) away from the ecological stirring paddles (675) is fixedly connected with a cleaning strip (676), and one side of the cleaning strip (676) contacts the outer wall of the cooling pipe (6513).

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