A stirring crystallization composite component for cholesterol extraction

Abstract

This invention discloses a stirring crystallization composite component for cholesterol extraction, belonging to the field of cholesterol processing technology. It includes a tank with a cover on top and a base fixedly connected to the bottom. The base has an internal mounting cavity containing a motor. The motor's output shaft is fixedly connected to a drive sleeve, the upper end of which extends into the tank and is coaxial with it. The cover has a through hole through which a fixing sleeve is inserted. A rotating handle is fixedly connected to the upper end of the fixing sleeve, which is snapped into the cover by a locking mechanism. A stirring rod is located inside the tank, with slots at both its upper and lower ends. This multifunctional cholesterol extraction stirring device, with its detachable stirring rod and stirring components, allows for easy disassembly and assembly of the stirring rod and components. This not only facilitates maintenance and repair but also allows for convenient removal and cleaning of the stirring components after stirring.

Description

Technical Field

[0001] This invention belongs to the field of cholesterol processing technology, and particularly relates to a stirring crystallization composite component for cholesterol extraction. Background Technology

[0002] Cholesterol is an important raw material for the production of hormones and can also be used as an emulsifier. Cholesterol has a wide range of physiological functions in the body, but when it is excessive, it can lead to hypercholesterolemia, which has adverse effects on the body.

[0003] Cholesterol extraction requires stirring using a mixing device. Most existing mixing devices consist of three parts: a tank, a cover, and stirring blades. During operation, the stirring blades are fixed to the motor's output shaft, and the motor drives the blades to rotate, achieving the stirring effect. However, the existing stirring blade structure is relatively simple, resulting in a small contact area between the blades and the raw materials in the tank, easily creating dead zones. Furthermore, because the stirring blades are fixedly connected to the motor's output shaft, cleaning the blades after stirring is difficult, leading to dirt and grime buildup that affects future use. Additionally, adding seed crystals during cholesterol crystallization is extremely inconvenient, and the coordination between seed crystal addition and stirring is poor, preventing the added seed crystals from being evenly dispersed in the solution, which is detrimental to the normal crystallization process.

[0004] To address these issues, we propose a stirring crystallization composite assembly for cholesterol extraction. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of poor stirring effect and difficulty in cleaning of stirring blades in the prior art, and to propose a stirring crystallization composite component for cholesterol extraction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A stirring crystallization composite component for cholesterol extraction includes a tank body, a cover body on the top of the tank body, and a base fixedly connected to the bottom of the tank body;

[0008] The tank is equipped with a stirring rod, and at least two sets of stirring elements are provided on the stirring rod. Each stirring element includes a sliding block, which is slidably sleeved on the outside of the stirring rod. Multiple sets of stirring strips are fixedly connected to the outer wall of the sliding block. A first spring is fixedly connected to the end of the stirring strip away from the sliding block. The stirring block is fixedly connected to the stirring block at the end of the first spring away from the stirring strip. The stirring block has a hollow cavity structure inside, and a sealing cap is movably embedded on the stirring block.

[0009] An adjustment assembly is provided below each set of stirring components. The adjustment assembly includes an electromagnetic component sleeved on the stirring rod. A compression spring is connected above the electromagnetic component, and the upper end of the compression spring is connected to the lower end of the sliding block.

[0010] It also includes a seed crystal introduction component, which includes a fixing ring that is connected to a sealing cap on each stirring block by multiple connecting ropes.

[0011] Preferably, the cover has a through hole, through which a fixing sleeve is inserted. A rotating handle is fixedly connected to the upper end of the fixing sleeve, and the fixing sleeve and the cover are connected by a snap-fit ​​device. The snap-fit ​​device includes a locking block fixedly connected to the side wall of the fixing sleeve, and a limiting block corresponding to the position of the locking block is fixedly connected to the upper end of the cover. There are two sets of locking blocks and limiting blocks, and the two limiting blocks are symmetrically arranged about the center of the cover. When the fixing sleeve is inserted to the upper end of the stirring rod, the upper end face of the locking block abuts against the lower end face of the limiting block.

[0012] Preferably, a limiting piece is fixedly connected to the side wall of the limiting block, the limiting piece is vertically arranged, and the two limiting pieces are rotationally symmetrical about the center of the cover.

[0013] Preferably, both ends of the rotating handle are fixedly connected to locking plates, each locking plate consisting of a vertical part and a horizontal part. A locking block is fixedly connected to the outer wall of the tank. When the locking block engages with the limiting block, the upper end face of the horizontal part of the locking plate abuts and engages with the lower end face of the locking block.

[0014] Preferably, at least two sets of lifting handles are fixedly connected to the upper end of the cover.

[0015] Preferably, the base has an internal mounting cavity, in which a motor is fixedly mounted. The output shaft of the motor is fixedly connected to a drive sleeve, the upper end of which extends into the tank body and is coaxial with the tank body. Multiple horizontal strip-shaped heat dissipation vents are opened on both sides of the side wall of the mounting cavity, and each strip-shaped heat dissipation vent is equidistant from the vertical direction.

[0016] Preferably, the stirring rod has slots at both the upper and lower ends, the slots being formed along the length of the stirring rod. The upper end of the driving sleeve and the lower end of the fixed sleeve are provided with storage grooves for fitting onto the outside of the stirring rod. A locking block adapted to the slot is formed on the inner wall of the storage groove of the driving sleeve.

[0017] Preferably, the stirring bar is composed of two parts, a raised section and a recessed section, connected together. The other end of the raised section is fixedly connected to the outer wall of the sliding block, and the other end of the recessed section is fixedly connected to the first spring.

[0018] Preferably, the first spring is a spiral spring.

[0019] Preferably, the sliding block has a slide rail that matches the stirring rod, and a slide bar is fixedly connected to the side wall of the slide rail, the slide bar matching the slot.

[0020] This invention has at least the following technical effects and advantages:

[0021] 1. The stirring device of the present invention, by providing a detachable stirring rod and stirring component, allows for easy disassembly and assembly of the stirring component and stirring rod, which not only facilitates maintenance and repair, but also allows for easy removal and cleaning of the stirring component after stirring is completed.

[0022] 2. By setting up a twisted stirring bar and a stirring block connected by a first spring, this application can achieve the effect of layered stirring, reduce dead corners in the stirring, and improve the stirring effect.

[0023] 3. This invention, by setting up an adjustment component, allows the electromagnetic component to adjust the height position of the stirring bar, the first spring, and the stirring block in the tank via a sliding block. This enables the stirring bar, the first spring, and the stirring block to stir the solution at different heights in the tank, thereby improving the stirring effect. Simultaneously, by controlling the electromagnetic components of the two adjustment components, the distance between the upper and lower stirring bar, the first spring, and the stirring block can be controlled, allowing their individual stirring actions to interact and generate turbulence, changing the flow rate and mixing intensity of the solution in the tank, thus comprehensively improving the stirring effect.

[0024] 4. This invention, by setting up a seed crystal introduction component and having it work in conjunction with an adjustment component, achieves two effects. First, the connecting rope on the seed crystal introduction component, in conjunction with the electromagnetic component, causes the sliding block to compress the spring and move downwards along the stirring rod to a first height position. The connecting rope pulls the first spring and the stirring block closer to the stirring rod, changing their stirring positions and thus stirring the solution at different locations, improving the overall stirring effect. Second, when seed crystals need to be added, the electromagnetic component moves the sliding block downwards to a second height position, and the connecting rope pulls the sealing cap away from the stirring block. Simultaneously, as the stirring rod drives the stirring block to rotate, the pre-loaded seed crystals in the stirring block are added through different addition points under the action of centrifugal force and are evenly added to the saturated solution under the stirring action of the stirring block, thereby improving the speed and quality of crystallization. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the disassembled state of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the stirring rod and stirring component in this invention;

[0028] Figure 4 This is a schematic diagram of the stirring component structure in this invention;

[0029] Figure 5 This is a schematic diagram of the structure of the cover in this invention;

[0030] Figure 6 This is a schematic diagram of the rotating handle and locking plate in this invention;

[0031] Figure 7 This is a schematic diagram of the tank structure in this invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the tank in this invention;

[0033] Figure 9 This is a schematic diagram of the stirring block and sealing cap structure of the present invention.

[0034] In the diagram: 1. Tank body; 11. Locking block; 12. Feed pipe; 13. Discharge pipe; 2. Cover; 21. Fixing sleeve; 211. Locking block; 22. Rotating handle; 23. Limiting block; 231. Limiting piece; 24. Locking plate; 25. Lifting handle; 3. Base; 31. Mounting cavity; 311. Strip-shaped heat dissipation vent; 32. Motor; 33. Drive sleeve; 4. Stirring rod; 41. Slot; 42. 43. Storage tank; 43. Stirring component; 431. Sliding block; 4311. Slide rail; 4312. Sliding bar; 432. Stirring bar; 4321. Raised section; 4322. Recessed section; 433. First spring; 434. Stirring block; 435. Sealing cover; 5. Adjustment component; 501. Electromagnetic component; 502. Compression spring; 6. Seed introduction component; 601. Fixing ring; 602. Connecting rope. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Example 1

[0037] like Figure 1-8As shown, a stirring crystallization composite assembly for cholesterol extraction includes a tank 1, a cover 2 on top of the tank 1, a feed pipe 12 at the upper end of the cover 2, and a discharge pipe 13 on the lower side wall of the tank 1. At least two sets of lifting handles 25 are also fixedly connected to the upper end of the cover 2. A base 3 is fixedly connected to the bottom of the tank 1, and an installation cavity 31 is provided inside the base 3. A motor 32 is fixedly installed inside the installation cavity 31. Multiple horizontal strip-shaped heat dissipation vents 311 are opened on both sides of the side wall of the installation cavity 31, and the strip-shaped heat dissipation vents 311 are equidistantly distributed along the vertical direction to facilitate heat dissipation for the motor 32.

[0038] like Figure 8 As shown, a drive sleeve 33 is fixedly connected to the output shaft of the motor 32. The upper end of the drive sleeve 33 extends into the inside of the tank 1, and the drive sleeve 33 is coaxial with the tank 1.

[0039] like Figure 5 As shown, the cover 2 has a through hole, and a fixing sleeve 21 is installed through the through hole. A rotating handle 22 is fixedly connected to the upper end of the fixing sleeve 21.

[0040] like Figure 3 As shown, a stirring rod 4 is provided inside the tank 1. The stirring rod 4 has slots 41 at both its upper and lower ends, extending along its length. The upper end of the drive sleeve 33 and the lower end of the fixed sleeve 21 are each provided with a receiving groove 42 for fitting onto the outside of the stirring rod 4. To facilitate power transmission, a locking block adapted to the slot 41 is provided on the inner wall of the receiving groove 42 of the drive sleeve 33. Thus, connecting the stirring rod 4 through the drive sleeve 33 and the fixed sleeve 21 not only allows the stirring rod 4 to rotate but also facilitates its disassembly and cleaning.

[0041] like Figure 5 As shown, the fixed sleeve 21 and the cover 2 are connected by a snap-fit ​​device. The snap-fit ​​device includes a snap block 211 fixedly connected to the side wall of the fixed sleeve 21. The upper end of the cover 2 is fixedly connected to a limiting block 23 corresponding to the position of the snap block 211. There are two sets of snap blocks 211 and limiting blocks 23. The two limiting blocks 23 are symmetrically arranged about the center of the cover 2. The limiting blocks 23 have an L-shaped structure. When the fixed sleeve 21 is inserted to the upper end of the stirring rod 4, the upper end face of the snap block 211 abuts against the lower end face of the limiting block 23. When the fixed sleeve 21 is inserted downward to the corresponding depth, the snap block 211 and the limiting block 23 can be engaged by rotating the fixed sleeve 21, so that the fixed sleeve 21 can no longer move upward.

[0042] Furthermore, such as Figure 5As shown, a limiting piece 231 is fixedly connected to the side wall of the limiting block 23. The limiting piece 231 is vertically set, and the two limiting pieces 231 are symmetrical about the center of the cover body 2. When in use, the limiting piece 231 can limit the side of the locking block 211, so that after the locking block 211 rotates with the fixing sleeve 21 to the position below the limiting block 23, it can no longer continue to rotate due to the action of the limiting piece 231, thus achieving the limiting effect.

[0043] Furthermore, such as Figure 6 As shown, locking plates 24 are fixedly connected to both ends of the rotating handle 22. The locking plate 24 consists of a vertical part and a horizontal part. A locking block 11 is fixedly connected to the outer wall of the tank body 1. When the locking block 211 engages with the limiting block 23, the upper end face of the horizontal part of the locking plate 24 abuts against the lower end face of the locking block 11. That is, when the limiting block 23 and the locking block 211 engage with each other, the locking plate 24 will also engage with the locking block 11 at the same time, thereby realizing the automatic locking and fixing of the cover 2 and the tank body 1.

[0044] like Figure 3 As shown, at least two sets of stirring elements 43 are provided on the stirring rod 4. The two sets of stirring elements 43 are respectively arranged in the upper and lower parts of the stirring rod 4 to form different turbulence stirring layers.

[0045] like Figure 4 As shown, the stirring component 43 includes a sliding block 431, which is slidably sleeved on the outside of the stirring rod 4. The sliding block 431 has a slide rail 4311 that matches the stirring rod 4. A slide bar 4312 is fixedly connected to the side wall of the slide rail 4311, and the slide bar 4312 matches the slot 41. Multiple sets of stirring bars 432 are fixedly connected to the outer side wall of the sliding block 431. A first spring 433 is fixedly connected to the end of the stirring bar 432 away from the sliding block 431, and a stirring block 434 is fixedly connected to the end of the first spring 433 away from the stirring bar 432.

[0046] Under the action of the first spring 433, the stirring block 434 at the tail of the stirring bar 432 can be made to vibrate slightly, further improving the stirring effect. In addition, since the first spring 433 is vortex-shaped, when the first spring 433 is stirring, under the resistance of the liquid on the first spring 433 and the stirring block 434, it can increase the amplitude of the first spring 433, thereby improving the stirring effect.

[0047] like Figure 4 As shown, the stirring bar 432 is composed of two parts: a raised section 4321 and a recessed section 4322. The other end of the raised section 4321 is fixedly connected to the outer wall of the sliding block 431, and the other end of the recessed section 4322 is fixedly connected to the first spring 433.

[0048] The uppermost part of the raised section 4321 and the lowermost part of the recessed section 4322 can contact materials at different heights, thereby achieving a better layered mixing effect, further reducing mixing dead zones, and improving the mixing effect.

[0049] By setting up a detachable stirring rod 4 and stirring component 43, it is easy to disassemble and assemble the stirring component 43 and stirring rod 4, which not only makes maintenance and repair easier, but also allows the stirring component 43 to be easily removed for cleaning after stirring is finished.

[0050] In addition, by setting a twisted stirring bar 432 and a stirring block 434 connected by a first spring 433, this application can achieve the effect of layered stirring, which can reduce the dead corners of stirring and improve the stirring effect.

[0051] When using this device, firstly, the stirring element 43 is fitted onto the upper and lower parts of the stirring rod 4 respectively. Then, the lower end of the stirring rod 4 is inserted into the receiving groove 42 of the drive sleeve 33, so that the locking block and the locking groove 41 are engaged with each other, allowing power to be transmitted. Then, the receiving groove 42 at the lower end of the fixing sleeve 21 is aligned with the upper end of the stirring rod 4, and the cover 2 is placed on the upper opening of the tank 1. Next, the rotating handle 22 is moved downward until the upper end of the stirring rod 4 is fully inserted into the fixing sleeve 21. Finally, the rotating handle 22 is rotated so that the locking block 211 is engaged in the limiting block 23, fixing the upper end of the stirring rod 4 in place. At the same time, the locking plate 24 is engaged in the locking block 11, fixing the cover 2 and the tank 1 together. The motor 32 is started and drives the stirring rod 4 to rotate through the drive sleeve 33. The stirring rod 4 drives the stirring bar 432, the first spring 433, and the stirring block 434 to rotate, thereby improving the stirring effect.

[0052] Example 2

[0053] To further improve the mixing effect of the mixing components 43, an adjustment assembly 5 is provided below each set of mixing components 43. The adjustment assembly 5 includes an electromagnetic component 501 sleeved on the mixing rod 4, which is detachably connected to the mixing rod 4 via a pin. A compression spring 502 is connected above the electromagnetic component 501, with its upper end connected to the lower end of the sliding block 431. The sliding block 431 is made of ferromagnetic material, while the mixing rod 4 is made of non-ferromagnetic material. When the electromagnetic component 501 is energized, it magnetically attracts the sliding block 431, causing the sliding block 431 to compress the compression spring 502 and move downwards along the mixing rod 4. When the electromagnetic component 501 is de-energized, it no longer magnetically attracts the sliding block 431, the compression spring 502 returns to its elastic deformation, and pushes the sliding block 431 back to its initial position. Thus, the electromagnetic component 501 can adjust the height position of the sliding block 431 on the stirring rod 4, and then adjust the height position of the stirring bar 432, the first spring 433, and the stirring block 434 in the tank 1 through the sliding block 431, so that the stirring bar 432, the first spring 433, and the stirring block 434 can stir the solution at different height positions in the tank 1 to improve the stirring effect.

[0054] In particular, by controlling the electromagnetic component 501 of the upper adjustment component 5 to be energized and magnetically adsorb the sliding block 431, while the electromagnetic component 501 of the lower adjustment component 5 is not energized, the upper sliding block 431 can drive the upper stirring bar 432, the first spring 433, and the stirring block 434 to move closer to or further away from each other. During the subsequent stirring process, due to the change in the distance between the upper and lower stirring bars 432, the first spring 433, and the stirring block 434, the stirring action of the stirring bars 432, the first spring 433, and the stirring block 434 can interact with the stirring action of the lower stirring bars 432, the first spring 433, and the stirring block 434, generating turbulence and changing the flow rate and mixing intensity of the solution in the tank 1, thereby comprehensively improving the stirring effect.

[0055] Example 3

[0056] To obtain cholesterol crystals, a heating mechanism is installed on the side wall or bottom of tank 1 to gradually evaporate the solution, bringing it to saturation and preparing it for cholesterol crystallization. Generally, to improve the quality and speed of cholesterol crystallization, seed crystals need to be added to the saturated solution. However, adding seed crystals requires opening the lid 2. Opening the lid 2 not only affects the normal operation of the stirring rod 4 and the stirring element 43, but also causes changes in pressure and temperature within tank 1, thus hindering the crystallization process. Therefore, through actual production and multiple trials, the stirring element 43 and its related components above it were adopted to solve the above problems.

[0057] Specifically, such as Figure 9 As shown, the stirring block 434 has a hollow cavity structure, and seed crystals are pre-loaded inside. A sealing cap 435 is detachably embedded on the stirring block 434. After the sealing cap 435 is installed on the stirring block 434, it can seal the hollow cavity structure inside the stirring block 434, so that the sealing cap 435 will only open when seed crystals need to be added, and the pre-loaded seed crystals inside the cavity will be released.

[0058] It also includes a seed crystal introduction component 6, which includes a retaining ring 601. The retaining ring 601 is detachably connected to the stirring rod 4, specifically, it is connected by a pin. The retaining ring 601 is connected to the sealing cap 435 on each stirring block 434 by multiple connecting ropes 602.

[0059] Furthermore, during the stirring process, the seed crystal introduction component 6 works in conjunction with the adjustment component 5. By controlling the energization of the electromagnetic component 501, the electromagnetic component 501 can magnetically attract the sliding block 431, causing the sliding block 431 to compress the spring 502 and move downward along the stirring rod 4 to the first height position (at this position, the sealing cover 435 and the stirring block 434 will not separate). When the sliding block 431 moves downward, the stirring bar 432 and the first spring 433 drive the stirring block 434 to move downward. At the same time, due to the embedded and sealed connection between the sealing cover 435 and the stirring block 434, under the restriction of the connecting rope 602, the connecting rope 602 can pull the stirring block 434 through the stirring block 434. At this time, the sealing cover 435 and the stirring block 434 will not separate. The connecting rope 602 restricts the stirring block 434, causing the first spring 433 connected to the stirring block 434 to deform and move closer to the stirring rod 4. At the same time, it drives the stirring block 434 above it to move closer to the stirring rod 4, thereby changing the stirring position of the first spring 433 and the stirring block 434, thus stirring the solution at different positions and improving the overall stirring effect.

[0060] When the solution reaches saturation and seed crystals need to be added, the electromagnetic component 501 is energized, further magnetically attracting the sliding block 431. This causes the sliding block 431 to compress the spring 502 and move downwards along the stirring rod 4 to a second height position (the second position is lower than the first position). At this time, the connecting rope 602 pulls the sealing cap 435 away from the stirring block 434. Simultaneously, as the stirring rod 4 drives the stirring block 434 to rotate, the pre-loaded seed crystals in the stirring block 434 are thrown out by centrifugal force and enter the solution in the tank 1. Thus, on the one hand, adding seed crystals through multiple stirring blocks 434 achieves multi-point addition of seed crystals, which is beneficial for the uniform dispersion of seed crystals in the solution; on the other hand, the stirring rod 4 drives the stirring block 434 to rotate while adding seed crystals, which is more conducive to the rapid and uniform addition of seed crystals to the saturated solution, thereby improving the speed and quality of crystallization, with significant effects.

[0061] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stirring crystallization composite component for cholesterol extraction, characterized in that, The device includes a tank (1), a cover (2) on top of the tank (1), and a base (3) fixedly connected to the bottom of the tank (1). A stirring rod (4) is installed inside the tank (1), and at least two sets of stirring components (43) are provided on the stirring rod (4). Each stirring component (43) includes a sliding block (431), which is slidably fitted onto the outside of the stirring rod (4). Multiple sets of stirring strips (432) are fixedly connected to the outer wall of the sliding block (431). A first spring (433) is fixedly connected to the end of each stirring strip (432) away from the sliding block (431). The first spring (433) is located away from the stirring strip (432). A stirring block (434) is fixedly connected to one end. The stirring block (434) has a hollow internal structure and a sealing cap (435) is movably embedded on the stirring block (434). An adjustment assembly (5) is provided below each set of stirring components (43). The adjustment assembly (5) includes an electromagnetic component (501) sleeved on the stirring rod (4). A compression spring (502) is connected above the electromagnetic component (501). The upper end of the compression spring (502) is connected to the lower end of the sliding block (431). It also includes a seed crystal introduction assembly (6). The seed crystal introduction assembly (6) includes a fixing ring (601). The fixing ring (601) is connected by multiple connecting ropes. (602) is connected to the sealing cap (435) on each stirring block (434); the stirring bar (432) is composed of two parts connected together: a raised section (4321) and a recessed section (4322). The other end of the raised section (4321) is fixedly connected to the outer wall of the sliding block (431), and the other end of the recessed section (4322) is fixedly connected to the first spring (433); the sliding block (431) has a slide (4311) that matches the stirring rod (4), and a slide bar (4312) is fixedly connected to the side wall of the slide bar (4311). The slide bar (4312) matches the slot (41); through crystal A connecting rope on the component, in conjunction with an electromagnetic component, causes the sliding block to compress the spring and move downwards along the stirring rod to a first height position. The connecting rope pulls the first spring and the stirring block closer to the stirring rod, changing their stirring positions and stirring the solution at different locations. When seed crystals need to be added, the electromagnetic component moves the sliding block downwards to a second height position, and the connecting rope pulls the sealing cap away from the stirring block. As the stirring rod drives the stirring block to rotate, the pre-loaded seed crystals in the stirring block are added through different addition points under the action of centrifugal force and are evenly added to the saturated solution under the stirring action of the stirring block.

2. The stirring crystallization composite component for cholesterol extraction according to claim 1, characterized in that, The cover (2) has a through hole, through which a fixed sleeve (21) is installed. The upper end of the fixed sleeve (21) is fixedly connected to a rotating handle (22). The fixed sleeve (21) and the cover (2) are connected by a snap-fit ​​device. The snap-fit ​​device includes a snap block (211) fixedly connected to the side wall of the fixed sleeve (21). The upper end of the cover (2) is fixedly connected to a limiting block (23) corresponding to the position of the snap block (211). There are two sets of snap blocks (211) and limiting blocks (23). The two limiting blocks (23) are symmetrically arranged about the center of the cover (2). When the fixed sleeve (21) is inserted into the upper end of the stirring rod (4), the upper end face of the snap block (211) abuts against the lower end face of the limiting block (23).

3. The stirring crystallization composite component for cholesterol extraction according to claim 2, characterized in that, Limiting pieces (231) are fixedly connected to the side wall of the limiting block (23). The limiting pieces (231) are vertically set and the two limiting pieces (231) are rotationally symmetrical about the center of the cover (2).

4. The stirring crystallization composite component for cholesterol extraction according to claim 2, characterized in that, Both ends of the rotating handle (22) are fixedly connected to locking plates (24). The locking plates (24) consist of a vertical part and a horizontal part. A locking block (11) is fixedly connected to the outer wall of the tank (1). When the locking block (211) engages with the limiting block (23), the upper end face of the horizontal part of the locking plate (24) abuts against the lower end face of the locking block (11).

5. The stirring crystallization composite component for cholesterol extraction according to claim 1, characterized in that, At least two sets of lifting handles (25) are also fixedly connected to the upper end of the cover (2).

6. The stirring crystallization composite component for cholesterol extraction according to claim 1, characterized in that, The base (3) has an installation cavity (31) inside, and a motor (32) is fixedly installed in the installation cavity (31). The output shaft of the motor (32) is fixedly connected to a drive sleeve (33). The upper end of the drive sleeve (33) extends into the tank (1). The drive sleeve (33) is coaxial with the tank (1). Multiple horizontal strip-shaped heat dissipation vents (311) are opened on both sides of the side wall of the installation cavity (31). Each strip-shaped heat dissipation vent (311) is equidistantly distributed along the vertical direction.

7. The stirring crystallization composite component for cholesterol extraction according to claim 6, characterized in that, The stirring rod (4) has slots (41) at both the upper and lower ends. The slots (41) are opened along the length of the stirring rod (4). The upper end of the driving sleeve (33) and the lower end of the fixed sleeve (21) are provided with storage grooves (42) for fitting onto the outside of the stirring rod (4). A locking block that matches the slots (41) is provided on the inner wall of the storage groove (42) of the driving sleeve (33).

8. The stirring crystallization composite component for cholesterol extraction according to claim 7, characterized in that, The first spring (433) is a spiral spring.

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