Self-cleaning sodium cholate solution filtering device

Abstract

This utility model belongs to the technical field of solution filtration equipment, and in particular to a self-cleaning sodium cholate solution filtration device. It includes a filter cylinder with a drain port at the bottom of its outer side and a debris discharge port on its bottom surface. A drain valve and a debris discharge valve are respectively provided on the drain port and the debris discharge port. The device also includes a sealing top plate, detachably mounted at the top opening of the filter cylinder; a filtration mechanism; and a self-cleaning mechanism. The self-cleaning mechanism can operate online during filtration without stopping the machine. A servo motor drives the cleaning components to scrape away impurities in real time, preventing filter clogging and ensuring continuous production. Automated cleaning replaces manual disassembly and cleaning; operators only need to observe and control the debris discharge valve through a transparent window, reducing labor intensity. The cleaning components are detachable for easy maintenance and replacement, and the L-shaped rubber scraper can simultaneously clean the filter surface of the cylindrical filter screen and the inner bottom surface of the filter cylinder, preventing impurities from adhering.

Description

Technical Field

[0001] This utility model belongs to the technical field of solution filtration equipment, specifically relating to a self-cleaning sodium cholate solution filtration device, which is particularly suitable for the purification of sodium cholate solutions containing insoluble impurities such as protein residues and particulate impurities. Background Technology

[0002] Sodium cholate solution often contains a small amount of insoluble impurities (such as protein residues and particulate impurities) during preparation or purification, which need to be removed by filtration to ensure the purity of the solution.

[0003] Existing filtration devices mostly use a fixed filter screen structure. During use, impurities easily adhere to the filter screen and cause blockage. Frequent shutdowns are required to disassemble the filter screen for manual cleaning, which not only affects filtration efficiency but may also contaminate the solution during disassembly and assembly. In addition, manual cleaning is labor-intensive and cannot meet the needs of continuous production.

[0004] To address the aforementioned problems, this invention proposes a self-cleaning sodium cholate solution filtration device. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a self-cleaning sodium cholate solution filtration device, which is convenient to use and easy to clean.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning sodium cholate solution filtration device, comprising a filter cylinder for containing the sodium cholate solution to be filtered, wherein the bottom end of the outer side of the filter cylinder is provided with a drain port and the bottom surface is provided with a waste discharge port, and a drain valve and a waste discharge valve are respectively provided on the drain port and the waste discharge port, and further comprising:

[0007] A sealing top plate is detachably disposed at the top opening of the filter cylinder;

[0008] A filtration mechanism is detachably mounted on the bottom surface of the sealing top plate for trapping insoluble impurities in the solution, and an inlet is provided on the sealing top plate.

[0009] The self-cleaning mechanism is located on the sealed top plate and includes a driving component and a cleaning component driven by the driving component. The cleaning component is in contact with the filter surface of the filter mechanism and can move along the filter surface to scrape off the attached impurities.

[0010] As a preferred technical solution of this utility model, the filtration mechanism includes a cylindrical filter screen and a fixing flange fixed to the top of the cylindrical filter screen.

[0011] The top end of the cylindrical filter screen is fixedly connected to the sealing top plate by a fixing flange, and the bottom end is tightly fitted to the inner bottom surface of the filter cylinder.

[0012] As a preferred embodiment of this utility model, the filter mechanism further includes a porous positioning ring;

[0013] The porous positioning ring is fixed to the inner bottom surface of the filter cylinder, the bottom end of the cylindrical filter screen is embedded in the porous positioning ring, and the outer diameter of the cylindrical filter screen is adapted to the inner diameter of the porous positioning ring.

[0014] As a preferred technical solution of this utility model, the driving component includes a rotating rod, a servo motor and a connecting rod, and the cleaning component includes a frame, an L-shaped bracket and an L-shaped rubber scraper;

[0015] The rotating rod is rotatably mounted on the bottom surface of the sealing top plate;

[0016] The servo motor is fixed to the top surface of the sealed top plate and is used to drive the rotating rod to rotate;

[0017] The frame is fixedly connected to the rotating rod by a connecting rod.

[0018] The L-shaped bracket is detachably connected to the frame;

[0019] The L-shaped rubber scraper is bonded and fixed to the outer wall of the L-shaped bracket and is in contact with the filter surface of the cylindrical filter screen.

[0020] As a preferred embodiment of this utility model, the self-cleaning mechanism further includes a threaded rod, a locking nut, and a telescopic spring;

[0021] At least two of the threaded rods are fixed to the outer side of the L-shaped bracket and pass through the frame;

[0022] The locking nut is provided at the protruding end of the threaded rod by means of thread engagement;

[0023] The telescopic spring is sleeved on the threaded rod and located between the L-shaped bracket and the frame.

[0024] As a preferred technical solution of this utility model, it also includes a locking mechanism. The sealing top plate is fixed to the top of the filter cylinder by a plurality of locking mechanisms that are equally spaced along the circumferential direction. The locking mechanism includes a fixing block, a positioning screw and a wing nut.

[0025] The fixing block is fixed to the outer wall of the sealing top plate, and a positioning notch is provided on the fixing block;

[0026] The positioning screw is hinged to the outer wall of the filter cylinder and passes through the positioning notch;

[0027] The wing nut is attached to the extended end of the positioning screw by means of thread engagement.

[0028] As a preferred embodiment of this utility model, a rubber sealing ring is provided between the sealing top plate and the filter cylinder.

[0029] As a preferred embodiment of this utility model, a transparent viewing window is embedded in the filter cylinder.

[0030] As a preferred embodiment of this utility model, the top surface of the sealing top plate is fixed with two symmetrically distributed lifting rings.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. The self-cleaning mechanism can operate online during the filtration process without stopping the machine. It uses a servo motor to drive the cleaning components to scrape away impurities in real time, avoiding the decrease in filtration rate caused by filter screen clogging and ensuring continuous production.

[0033] 2. Automated cleaning replaces manual disassembly and cleaning. Operators only need to observe and control the waste discharge valve through a transparent window to discharge waste, resulting in low labor intensity.

[0034] 3. The cleaning components are detachable, making maintenance and replacement convenient. The L-shaped rubber scraper can clean both the filter surface of the cylindrical filter screen and the inner bottom surface of the filter cylinder at the same time, preventing impurities from sticking together.

[0035] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This is an isometric structural diagram of the filter mechanism in this utility model;

[0039] Figure 3 This is an isometric structural diagram of the self-cleaning mechanism in this utility model;

[0040] Figure 4 This utility model Figure 1 A magnified schematic diagram of the locking mechanism in the diagram;

[0041] Figure 5 This utility model Figure 3 A magnified structural diagram at point A in the diagram.

[0042] In the diagram: 1. Filter cylinder; 11. Drain port; 12. Drain valve; 13. Impurity discharge port; 14. Impurity discharge valve; 15. Transparent window; 2. Sealed top plate; 21. Inlet; 22. Lifting ring; 3. Filtering mechanism; 31. Cylindrical filter screen; 311. Fixed flange; 32. Multi-hole positioning ring; 4. Self-cleaning mechanism; 41. Rotating rod; 42. Servo motor; 43. Connecting rod; 44. Frame; 45. L-shaped bracket; 46. L-shaped rubber scraper; 47. Threaded rod; 48. Locking nut; 49. Telescopic spring; 5. Locking mechanism; 51. Fixing block; 511. Positioning notch; 52. Positioning screw; 53. Wing nut; 6. Rubber sealing ring. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] Please see Figures 1-5 The present invention provides the following technical solution: a self-cleaning sodium cholate solution filtration device, comprising a filter cylinder 1 for containing the sodium cholate solution to be filtered, a drain port 11 at the bottom of the outer side of the filter cylinder 1 and a waste discharge port 13 at the bottom, a drain valve 12 and a waste discharge valve 14 respectively provided on the drain port 11 and the waste discharge port 13, and further comprising: a sealing top plate 2, a filtration mechanism 3 and a self-cleaning mechanism 4.

[0045] Furthermore, by Figure 1 and Figure 2 As shown in this embodiment, the sealing top plate 2 is detachably disposed at the top opening of the filter cylinder 1, and the filter mechanism 3 is detachably disposed on the bottom surface of the sealing top plate 2 for intercepting insoluble impurities in the solution. An inlet 21 is provided on the sealing top plate 2, and a self-cleaning mechanism 4 is disposed on the sealing top plate 2. It includes a driving component and a cleaning component driven by the driving component. The cleaning component is in contact with the filter surface of the filter mechanism 3 and can move along the filter surface to scrape off the attached impurities. After adopting the above scheme, when using it, the drain valve 12 and the impurity discharge valve 14 are closed first to prepare for receiving the solution to be filtered.

[0046] The sodium cholate solution to be filtered is injected into the device through the inlet 21 on the sealed top plate 2. The solution flows downward naturally under the action of gravity and first contacts the filter surface of the filter mechanism 3.

[0047] The filter surface of the filter mechanism 3 only allows soluble components in the sodium cholate solution to pass through. Insoluble impurities (such as solid particles, flocculent matter, etc.) are trapped outside the filter surface. The clear sodium cholate solution that passes through the filter surface enters the cavity of the filter cylinder 1 outside the filter mechanism 3 to complete the initial separation.

[0048] When the clear liquid in the cavity of the filter cylinder 1 reaches a certain level, the drain valve 12 is slowly opened, and the clear sodium cholate solution is discharged through the drain port 11, which can be directly connected to the collection container for subsequent use or storage.

[0049] As the filtration time increases, the amount of impurities attached to the filter surface of the filter mechanism 3 gradually increases, which will lead to a decrease in the filtration rate (manifested as a decrease in the amount of liquid discharged from the drain port 11). At this time, the self-cleaning mechanism 4 is activated.

[0050] After receiving the start signal, the drive component of the self-cleaning mechanism 4 drives the cleaning component to move. Since the cleaning component is always in close contact with the filter surface, it can completely scrape off the attached impurities.

[0051] The scraped impurities fall to the bottom of the filter cylinder 1 under gravity. After the impurities accumulate to a certain amount, the drain valve 12 is closed and the impurity discharge valve 14 is opened. The impurities on the bottom are discharged to the waste collection device through the impurity discharge port 13. After the impurities are discharged, the impurity discharge valve 14 is closed, and the drain valve 12 can be reopened to continue filtering, so as to achieve continuous operation.

[0052] When the filtration efficiency of the filter mechanism 3 decreases significantly after long-term use, the sealing top plate 2 can be removed, the filter mechanism 3 can be taken off the bottom of the sealing top plate 2 and cleaned (such as by rinsing with clean water or ultrasonic cleaning) or a new filter mechanism 3 can be directly replaced and then reassembled.

[0053] If impurities remain inside the filter cylinder 1, the inside of the cylinder can be rinsed through the top opening after the sealing top plate 2 is removed. The rinsing wastewater is discharged from the discharge port 13 to ensure that the inside of the device is clean and free of residue.

[0054] Optionally, by Figure 1 and Figure 2As shown in this embodiment, the filtration mechanism 3 includes a cylindrical filter screen 31 and a fixing flange 311 fixed to the top of the cylindrical filter screen 31. The top of the cylindrical filter screen 31 is fixedly connected to the sealing top plate 2 by the fixing flange 311, and the bottom end is tightly fitted to the inner bottom surface of the filter cylinder 1. With the above solution, the cylindrical filter screen 31 can intercept impurities in the solution from all directions during use. In addition, even if some of the mesh holes of the cylindrical filter screen 31 are blocked, the mesh holes in other positions can still meet the filtration operation, thus improving the reliability of the operation.

[0055] The bottom end of the cylindrical filter plate 31 is tightly fitted to the inner bottom surface of the filter cylinder 1. On the one hand, this prevents the solution from passing through the gap between the cylindrical filter plate 31 and the filter cylinder 1, ensuring that the solution only passes through the mesh of the cylindrical filter plate 31. On the other hand, it prevents impurities from accumulating in the gap between the cylindrical filter plate 31 and the filter cylinder 1.

[0056] Preferably, by Figure 1 and Figure 2 As shown in this embodiment, the filter mechanism 3 also includes a porous positioning ring 32. The porous positioning ring 32 is fixed to the inner bottom surface of the filter cylinder 1. The bottom end of the cylindrical filter screen 31 is embedded in the porous positioning ring 32, and the outer diameter of the cylindrical filter screen 31 is matched with the inner diameter of the porous positioning ring 32. With the above solution, during use, the porous positioning ring 32 is pre-fixed to the center area of ​​the inner bottom surface of the filter cylinder 1 by welding or bolts. The inner diameter of its annular structure is precisely matched with the outer diameter of the bottom end of the cylindrical filter screen 31. During assembly, the bottom end of the cylindrical filter screen 31 is aligned with the inner ring opening of the porous positioning ring 32 and vertically inserted downwards until it is fully engaged with the bottom end of the filter screen, forming a double fixing structure of top flange fixing and bottom positioning ring engagement. This prevents the cylindrical filter screen 31 from radially shifting or shaking when the solution impacts or the self-cleaning mechanism 4 operates, ensuring the stability of the filter surface position.

[0057] Optionally, by Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in this embodiment, the driving component includes a rotating rod 41, a servo motor 42, and a connecting rod 43; the cleaning component includes a frame 44, an L-shaped bracket 45, and an L-shaped rubber scraper 46; the self-cleaning mechanism 4 also includes a threaded rod 47, a locking nut 48, and a telescopic spring 49; the rotating rod 41 is rotatably mounted on the bottom surface of the sealing top plate 2; the servo motor 42 is fixed to the top surface of the sealing top plate 2 and is used to drive the rotating rod 41 to rotate; the frame 44 is fixedly connected to the rotating rod 41 by the connecting rod 43; the L-shaped bracket 45 is detachably connected to the frame 44; the L-shaped rubber scraper 46 is bonded and fixed to the outer wall of the L-shaped bracket 45 and fits against the filter surface of the cylindrical filter screen plate 31; at least two threaded rods 47 are fixed to the outer side of the L-shaped bracket 45 and penetrate the frame 44; the locking nut 48 is provided on the screw via a threaded engagement method. The extended end of the threaded rod 47; the telescopic spring 49 is sleeved on the threaded rod 47 and located between the L-shaped bracket 45 and the frame 44. After adopting the above scheme, during use and assembly, first connect the L-shaped bracket 45 and the frame 44 through the threaded rod 47, sleeve the telescopic spring 49 on the threaded rod 47 (located between the L-shaped bracket 45 and the frame 44), and then screw in the locking nut 48. Adjust the compression of the telescopic spring 49 by rotating the locking nut 48: the greater the spring compression, the greater the thrust on the L-shaped bracket 45, making the contact pressure between the L-shaped rubber scraper 46 and the inner wall of the cylindrical filter screen 31 stronger, ultimately ensuring that the outer side of the vertical part of the L-shaped rubber scraper 46 is completely in contact with the filter surface of the cylindrical filter screen 31 without gaps, and the bottom surface of the L-shaped rubber scraper 46 is in contact with the inner bottom surface of the filter cylinder 1.

[0058] When self-cleaning is required, the servo motor 42 starts, and its output shaft drives the rotating rod 41 to rotate around the axis. The rotating rod 41 transmits torque to the frame 44 through the connecting rod 43, causing the frame 44 to make a circular motion around the rotating rod 41. The frame 44 then drives the L-shaped bracket 45 to rotate synchronously through the threaded rod 47, and finally causes the L-shaped rubber scraper 46 to rotate along the inner wall of the cylindrical filter screen 31, simultaneously cleaning the impurities adhering to the filter surface of the cylindrical filter screen 31 and the inner bottom surface of the filter cylinder 1.

[0059] Optionally, by Figure 1 and Figure 3As shown, this embodiment also includes a locking mechanism 5. The sealing top plate 2 is fixed to the top of the filter cylinder 1 by multiple locking mechanisms 5 evenly distributed along the circumferential direction. The locking mechanism 5 includes a fixing block 51, a positioning screw 52, ​​and a wing nut 53. The fixing block 51 is fixed to the outer wall of the sealing top plate 2, and a positioning notch 511 is provided on the fixing block 51. The positioning screw 52 is hinged to the outer wall of the filter cylinder 1 and passes through the positioning notch 511. The wing nut 53 is provided at the protruding end of the positioning screw 52 by thread engagement. A rubber sealing ring 6 is provided between the sealing top plate 2 and the filter cylinder 1. With the above solution, when in use, the rubber sealing ring 6 is first glued and fixed to the top of the filter cylinder 1, and then the sealing top plate 2 with the filter mechanism 3 and the self-cleaning mechanism 4 assembled is covered on the top of the filter cylinder 1 to ensure that the bottom surface of the sealing top plate 2 is completely in contact with the rubber sealing ring 6.

[0060] Flip each positioning screw 52 upward around the hinge point so that it is engaged in the positioning notch 511 of the corresponding fixing block 51. Tighten the wing nut 53 at the protruding end of each positioning screw 52 alternately in the circumferential direction. The downward pressure of the wing nut 53 on the fixing block 51 drives the sealing top plate 2 to be pressed down at a uniform speed, so that the rubber sealing ring 6 is evenly compressed until the wing nut 53 is tightened without any looseness, thus achieving stable installation of the sealing top plate 2.

[0061] Preferably, by Figure 1 As shown in this embodiment, a transparent window 15 is embedded in the filter cylinder 1. With the above solution, when in use, the transparent window 15 can directly observe the clear liquid state on the outside of the cylindrical filter screen 31 inside the filter cylinder 1 and the impurity accumulation on the inside.

[0062] Preferably, by Figure 1 As shown in this embodiment, two symmetrically distributed lifting rings 22 are fixed on the top surface of the sealing top plate 2. With the above solution, when in use, the disassembled sealing top plate 2 (along with the cylindrical filter screen 31 and the self-cleaning mechanism 4) needs to be transferred to the maintenance platform. By attaching the lifting tools to the lifting rings 22, the whole component can be directly lifted to the platform without manual handling, which is especially suitable for scenarios where the device is installed at a high place.

[0063] It should be noted that the servo motor 42 is a commercially available standard device with a built-in power switch. Those skilled in the art can make conventional selections according to their needs. Its working principle is common knowledge known to those skilled in the art and has been fully disclosed in the prior art, so it will not be elaborated further in this article.

[0064] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0065] Components not described in detail in this article are existing technologies.

[0066] The working principle and usage process of this utility model: When using the filter device of this utility model, after the assembly is completed, the sodium cholate solution to be filtered is injected through the liquid inlet 21 of the sealed top plate 2. Because the bottom end of the cylindrical filter screen plate 31 is fitted with a porous positioning ring 32 and the top end is sealed, the solution can only flow into the internal cavity of the cylindrical filter screen plate 31.

[0067] Under the influence of gravity and pressure difference, the solution passes radially through the side wall of the cylindrical filter plate 31 (the pore size of the cylindrical filter plate 31 traps insoluble impurities while allowing soluble components to pass through) and enters the annular cavity between the outer side of the cylindrical filter plate 31 and the inner wall of the filter cylinder 1.

[0068] At this time, insoluble impurities (solid particles, flocculent matter) are intercepted by the inner wall of the cylindrical filter screen 31, and the clear solution gathers downward in the annular cavity. When the liquid level rises to the height of the drain port 11, the drain valve 12 is opened, and the clear liquid is discharged into the collection container through the drain port 11.

[0069] Operators can observe the clarity of the clear liquid in the annular cavity through the transparent window 15 (to determine whether the filtration meets the standards) and the thickness of impurities adhering to the inner side of the cylindrical filter screen 31 (to avoid starting self-cleaning too early / too late), eliminating the need for frequent sampling and testing, thus improving filtration efficiency.

[0070] When the transparent viewing window 15 observes that impurities have accumulated on the inner side of the cylindrical filter screen 31 to the point of affecting the filtration rate (reduced drainage volume), the servo motor 42 is activated: the output shaft of the servo motor 42 drives the rotating rod 41 to rotate around the axis, and the rotating rod 41 transmits the torque to the frame 44 through the connecting rod 43. The frame 44 drives the L-shaped bracket 45 to rotate synchronously, which ultimately causes the L-shaped rubber scraper 46 to rotate along the inner wall of the cylindrical filter screen 31, and simultaneously cleans the impurities adhering to the filter surface of the cylindrical filter screen 31 and the inner bottom surface of the filter cylinder 1.

[0071] The scraped impurities slide down the inner wall of the filter screen and are directed to the bottom of the filter cylinder 1. After confirming the amount of impurities accumulated at the bottom of the cylinder through the transparent window 15, the drain valve 12 is closed and the impurity discharge valve 14 is opened. The impurities are discharged to the waste collection device through the impurity discharge port 13.

[0072] After the impurity removal is completed, reopen the drain valve 12 and close the impurity removal valve 14 to restore the device to the filtration state.

[0073] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-cleaning sodium cholate solution filtration device, comprising a filter cylinder (1) for containing a sodium cholate solution to be filtered, wherein the filter cylinder (1) has a drain port (11) at the bottom of its outer side and a waste discharge port (13) at its bottom surface, and a drain valve (12) and a waste discharge valve (14) are respectively provided on the drain port (11) and the waste discharge port (13), characterized in that, Also includes: A sealing top plate (2) is detachably disposed at the top opening of the filter cylinder (1); The filter mechanism (3) is detachably disposed on the bottom surface of the sealing top plate (2) for intercepting insoluble impurities in the solution. The sealing top plate (2) is provided with a liquid inlet (21). The self-cleaning mechanism (4) is located on the sealing top plate (2) and includes a driving member and a cleaning member driven by the driving member. The cleaning member is in contact with the filter surface of the filter mechanism (3) and can move along the filter surface to scrape off the attached impurities.

2. The self-cleaning sodium cholate solution filtration device according to claim 1, characterized in that: The filtration mechanism (3) includes a cylindrical filter screen (31) and a fixing flange (311) fixed to the top of the cylindrical filter screen (31). The top end of the cylindrical filter screen (31) is fixedly connected to the sealing top plate (2) by a fixing flange (311), and the bottom end is tightly fitted to the inner bottom surface of the filter cylinder (1).

3. The self-cleaning sodium cholate solution filtration device according to claim 2, characterized in that: The filter mechanism (3) also includes a porous positioning ring (32); The porous positioning ring (32) is fixed to the inner bottom surface of the filter cylinder (1), the bottom end of the cylindrical filter screen plate (31) is embedded in the porous positioning ring (32), and the outer diameter of the cylindrical filter screen plate (31) is adapted to the inner diameter of the porous positioning ring (32).

4. The self-cleaning sodium cholate solution filtration device according to claim 2, characterized in that: The driving component includes a rotating rod (41), a servo motor (42), and a connecting rod (43), and the cleaning component includes a frame (44), an L-shaped bracket (45), and an L-shaped rubber scraper (46). The rotating rod (41) is rotatably mounted on the bottom surface of the sealing top plate (2); The servo motor (42) is fixed to the top surface of the sealing top plate (2) and is used to drive the rotating rod (41) to rotate. The frame (44) is fixedly connected to the rotating rod (41) by a connecting rod (43); The L-shaped bracket (45) is detachably connected to the frame (44); The L-shaped rubber scraper (46) is bonded and fixed to the outer wall of the L-shaped bracket (45) and is in contact with the filter surface of the cylindrical filter screen (31).

5. The self-cleaning sodium cholate solution filtration device according to claim 4, characterized in that: The self-cleaning mechanism (4) also includes a threaded rod (47), a locking nut (48), and a telescopic spring (49). At least two of the threaded rods (47) are fixed to the outer side of the L-shaped bracket (45) and pass through the frame (44); The locking nut (48) is provided at the protruding end of the threaded rod (47) by means of thread engagement; The telescopic spring (49) is sleeved on the threaded rod (47) and located between the L-shaped bracket (45) and the frame (44).

6. The self-cleaning sodium cholate solution filtration device according to claim 1, characterized in that: It also includes a locking mechanism (5), wherein the sealing top plate (2) is fixed to the top of the filter cylinder (1) by a plurality of locking mechanisms (5) distributed at equal intervals along the circumferential direction. The locking mechanism (5) includes a fixing block (51), a positioning screw (52) and a wing nut (53). The fixing block (51) is fixed to the outer wall of the sealing top plate (2), and a positioning notch (511) is provided on the fixing block (51). The positioning screw (52) is hinged to the outer wall of the filter cylinder (1) and passes through the positioning notch (511). The wing nut (53) is attached to the extended end of the positioning screw (52) by means of thread engagement.

7. The self-cleaning sodium cholate solution filtration device according to claim 6, characterized in that: A rubber sealing ring (6) is provided between the sealing top plate (2) and the filter cylinder (1).

8. The self-cleaning sodium cholate solution filtration device according to claim 1, characterized in that: A transparent viewing window (15) is embedded in the filter cylinder (1).

9. The self-cleaning sodium cholate solution filtration device according to claim 1, characterized in that: The top surface of the sealing top plate (2) is fixed with two symmetrically distributed lifting rings (22).

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