Liquid medicine filtering device

Abstract

The utility model belongs to the field of liquid medicine filtering, and particularly relates to a liquid medicine filtering device. The utility model provides a liquid medicine filtering device which comprises a machine frame, a liquid supply device arranged on the machine frame, a filtering device arranged on one side of the liquid supply device, a filter cartridge arranged on the filtering device and used for filtering liquid medicine, and a filter element arranged on the filter cartridge and used for filtering the liquid medicine, the cleaning device is arranged in the filtering device, and the cleaning device is used for cleaning the filter cartridge. According to the technical scheme, the liquid supply device supplies the liquid medicine into the filtering device, the liquid medicine passes through the filtering cylinder, so that medicine residues in the liquid medicine are left on the filtering cylinder, and when the filtering cylinder is blocked, the cleaning device cleans the filtering cylinder, so that the medicine residues on the filtering cylinder are separated from the surface of the filtering cylinder, the service life of the screen is prolonged, and meanwhile, the filtering efficiency of the liquid medicine is improved.

Description

Technical Field

[0001] This utility model belongs to the field of liquid medicine filtration, and in particular relates to a liquid medicine filtration device. Background Technology

[0002] The main functions of pharmaceutical filtration include removing impurities, protecting equipment, improving product quality, meeting regulatory requirements, extending shelf life, and improving appearance. Impurity removal through filtration effectively removes insoluble particles, microorganisms, bacteria, pyrogens, and other impurities from pharmaceutical solutions, ensuring the purity and safety of the drugs. Filtration prevents impurities from entering subsequent processing equipment (such as filling machines and sterilizers), reducing equipment wear and extending equipment lifespan. By removing unnecessary components, pharmaceutical filtration helps improve the quality and consistency of the final product, ensuring that each batch of drugs meets stringent quality control standards. The pharmaceutical industry is subject to strict regulation, and filtration is a crucial step in ensuring that drugs meet national and international health standards. Properly filtered pharmaceutical solutions, due to the reduction of factors that could cause spoilage, may have longer stability and shelf life. For some oral liquid preparations, filtration can make the solution clearer and more transparent, thereby improving the product's visual appeal.

[0003] A published patent discloses a centrifugal medicine residue filter barrel, aiming to solve the technical problems of low efficiency and incomplete extraction of medicine liquid in existing medicine liquid filtration devices. The technical solution adopted is: a centrifugal medicine residue filter barrel, including an outer barrel with a drain port at the bottom and a cover plate at the top; a mounting base driven by a servo motor is installed at the bottom of the outer barrel; multiple vertically extending limiting rods are evenly arranged around the upper surface of the mounting base along its rotation axis, and the top of the limiting rods has a threaded section and is fitted with a nut; an inner barrel is fixed on the mounting base, and the sidewall of the inner barrel is made of screen; multiple hollow rods extending vertically are evenly arranged on the sidewall of the inner barrel, and the hollow rods correspond one-to-one with the positioning rods; a cap is provided at the top of the inner barrel, and the cap has through holes corresponding to the positioning rods. However, during the filtration process, the filter residue will clog the screen, resulting in reduced filtration efficiency and requiring frequent screen replacement, thus reducing the screen's utilization efficiency. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a medicine filtration device that can self-clean the screen, remove medicine residue from the screen, eliminate the need for frequent screen replacements, extend the screen's lifespan, and improve the efficiency of medicine filtration.

[0005] In view of the above, the present invention provides a liquid filtration device, characterized in that it includes a frame, on which a liquid supply device is provided, and further includes:

[0006] A filtration device is provided on one side of the liquid supply device, and a filter cartridge is provided on the filtration device. The filtration device is used to filter the medicine liquid.

[0007] A cleaning device is installed inside the filter device and is used to clean the filter cartridge.

[0008] In this technical solution, the liquid supply device supplies the liquid medicine to the filtration device. The liquid medicine passes through the filter cartridge, leaving the residue inside the liquid medicine on the filter cartridge. When the filter cartridge is clogged, the cleaning device cleans the filter cartridge, causing the residue on the filter cartridge to detach from the surface of the filter cartridge, thereby extending the service life of the screen and improving the efficiency of liquid medicine filtration.

[0009] Furthermore, the liquid supply device is equipped with a liquid supply pipe, and the filtration device includes:

[0010] A filter barrel is fixedly installed at the center of the frame. A first through hole is provided on one side of the filter barrel. The liquid supply pipe is fixedly connected to one side of the filter barrel. The bottom of the filter barrel is sealed.

[0011] The inner barrel is fixedly installed at the bottom of the filter barrel. The diameter of the inner barrel is smaller than the inner diameter of the filter barrel. There is a space between the inner barrel and the filter barrel that can accommodate the medicine liquid. The inner barrel is fixedly connected to the liquid supply pipe through the first through hole. The top of the inner barrel is provided with a fixing hole.

[0012] A filter cartridge is mounted on a fixed hole and has filter holes smaller than the dregs.

[0013] In this technical solution, the liquid medicine in the liquid supply device enters the inner tank through the liquid supply pipe. The liquid medicine continuously enters the inner tank, allowing it to enter the filter cartridge through the fixing hole. The residue in the liquid medicine is filtered out and left on the surface of the filter cartridge. The clean liquid medicine flows out from the inside of the filter cartridge and enters the space between the inner tank and the filter tank.

[0014] Furthermore, multiple fixing holes are provided, and the fixing holes are equidistantly arranged on the top of the inner barrel along the circumferential direction. A fixing groove concentric with the fixing hole is provided on the outside of the fixing hole. The diameter of the fixing groove is adapted to the diameter of the filter cartridge. The fixing groove is detachably threaded to one end of the filter cartridge.

[0015] Furthermore, a cover plate is detachably fixed to the top of the filter barrel, and a fixing plate is provided at the bottom of the cover plate. The fixing plate is threaded to one end of the filter barrel, and a positioning groove corresponding to the fixing groove is provided on the fixing plate. The diameter of the positioning groove is adapted to the diameter of the filter barrel.

[0016] In this technical solution, the filter cartridge and the cover plate can be connected with bolts and nuts. The filter cartridge is fixedly connected between the fixed plate and the fixed groove. After the filter cartridge has been filtering for a long time, the filter screen on the filter cartridge will be damaged, affecting the filtration quality. By unscrewing the bolts and nuts to separate the cover plate and the filter cartridge, rotating the fixed plate to separate the fixed plate from the filter cartridge, and then rotating the filter cartridge to separate the fixed groove from the filter cartridge, the filter cartridge can be replaced, which is convenient for disassembly and replacement.

[0017] Furthermore, a base is fixedly installed inside the inner tub, and a receiving chamber is provided between the base and the bottom of the inner tub. A liquid inlet hole is provided at the center of the top of the base, and a center hole corresponding to the liquid inlet hole is provided at the top of the inner tub. The cleaning device is installed on the base.

[0018] Furthermore, the cleaning device includes:

[0019] A rotating shaft is rotatably mounted on the base, with one end of the rotating shaft connected to the center hole on the inner tub, and one end of the rotating shaft passing through the base and connecting to the bottom of the inner tub;

[0020] An outer tube is rotatably mounted on a base, and is fixedly connected to a rotating shaft and a liquid inlet.

[0021] A rotating tube is fixedly mounted on the outer tube, one end of which is connected to the top of the inner tub, and the diameter of the rotating tube is adapted to the diameter of the fixing hole.

[0022] A power source is fixedly mounted on the frame, and the output shaft of the power source is connected to one end of the rotating shaft. The power source is used to rotate the rotating shaft.

[0023] In this technical solution, the power source can be a motor to rotate the rotating shaft. When the filter cartridge needs to be cleaned during the filtration process, the power source rotates the rotating shaft, causing the rotating tube on the outer tube to rotate. The rotating tube is rotated to the fixed hole, preventing the liquid in the inner barrel from entering the filter cartridge. At this time, the pressure inside the filter cartridge is less than the pressure between the filter barrel and the inner barrel, causing the filtered liquid to be backwashed into the filter cartridge. This flushes the residue on the filter cartridge into the rotating tube, and the liquid carrying the residue enters the receiving chamber between the base and the bottom of the inner barrel through the outer tube. After cleaning one filter cartridge, the rotating tube is connected to different fixed holes by rotating the outer tube, thereby backwashing the filter cartridge. Backwashing the filter cartridge while filtering can improve the filtration efficiency of the filter cartridge. When not cleaning, the rotating tube is not connected to the fixed hole.

[0024] Furthermore, the diameter of the end of the rotating shaft is larger than the diameter of the central hole, the diameter of the central part of the rotating shaft is smaller than the diameter of the central hole, the diameter of the outer tube is adapted to the diameter of the liquid inlet hole, and a second through hole is provided on the top of the outer tube, the diameter of the second through hole being adapted to the diameter of the central part of the rotating shaft.

[0025] In this technical solution, the diameter of the end of the rotating shaft is larger than the diameter of the central hole, which can seal the top of the inner barrel. The diameter of the outer tube is matched with the diameter of the liquid inlet hole, which can seal the top of the base. The diameter of the second through hole is matched with the diameter of the central part of the rotating shaft, which can seal the top of the outer tube to prevent the medicine from flowing out and contaminating the filtered medicine.

[0026] Furthermore, an infusion pipe is provided on the side of the filter bucket opposite to the first through hole, the infusion pipe being used to discharge the filtered medicine solution, and a recovery pipe is provided at the bottom of the container, the recovery pipe being used to collect the medicine solution containing medicine residue.

[0027] Furthermore, the filter cartridge includes a filter element and fixing blocks at both ends of the filter element. The fixing blocks are fixedly connected to the fixing groove and the positioning groove, respectively. The filter element is pleated in both the circumferential and radial directions, and the inner diameter of the filter element is adapted to the inner diameter of the fixing groove.

[0028] In this technical solution, the filter element is pleated in both the circumferential and radial directions, which increases the surface area that can be filtered, thus enabling better filtration of the drug solution.

[0029] The beneficial effects of this utility model are:

[0030] 1. This utility model achieves the effect of connecting the rotating tube to different fixed holes by rotating the outer tube, so that the filtered medicine is backwashed into the filter cartridge, thereby flushing the medicine residue on the filter cartridge into the rotating tube. The medicine liquid carrying the medicine residue enters the receiving chamber between the base and the bottom of the inner barrel through the outer tube. The filter cartridge is backwashed at the same time as filtration, which can improve the filtration efficiency of the filter cartridge. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a front view structural diagram of the present invention;

[0033] Figure 3 This is a schematic diagram of part of the structure of the filtration device of this utility model;

[0034] Figure 4 This is a schematic diagram of the inner barrel structure of this utility model;

[0035] Figure 5 This is a schematic diagram of the working structure of the cleaning device of this utility model;

[0036] Figure 6 This is a schematic diagram of the structure of the filter cartridge of this utility model;

[0037] In the diagram: 1. Frame; 2. Filter device; 3. Cleaning device; 4. Liquid supply pipe; 5. Filter barrel; 6. Inner barrel; 7. Fixing hole; 8. Filter cartridge; 9. Filter hole; 10. Fixing groove; 11. Cover plate; 12. Fixing plate; 13. Positioning groove; 14. Base; 15. Reception chamber; 16. Liquid inlet hole; 17. Center hole; 18. Rotating shaft; 19. Outer pipe; 20. Rotating pipe; 21. Power source; 22. End of rotating shaft; 23. Central part of rotating shaft; 24. Second through hole; 25. Liquid delivery pipe; 26. Recovery pipe; 27. Filter element; 28. Fixing block; 29. ​​First through hole. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0040] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0042] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0043] Example 1:

[0044] like Figure 1-6 As shown, this utility model provides a liquid filtration device 2, including a frame 1, on which a liquid supply device is provided, and further comprising:

[0045] A filter device 2 is provided on one side of the liquid supply device. The filter device 2 is equipped with a filter cartridge 8 and is used to filter the liquid medicine.

[0046] A cleaning device 3 is installed inside the filter device 2 and is used to clean the filter cartridge 8.

[0047] The liquid supply device supplies the liquid medicine to the filter device 2. The liquid medicine passes through the filter cartridge 8, leaving the residue in the liquid medicine on the filter cartridge 8. When the filter cartridge 8 is clogged, the cleaning device 3 cleans the filter cartridge 8, causing the residue on the filter cartridge 8 to detach from the surface of the filter cartridge 8, thereby extending the service life of the screen and improving the efficiency of liquid medicine filtration.

[0048] The liquid supply device is equipped with a liquid supply pipe 4, and the filter device 2 includes:

[0049] The filter barrel 5 is fixedly installed at the center of the frame 1. A first through hole 29 is provided on one side of the filter barrel 5. The liquid supply pipe 4 is fixedly connected to one side of the filter barrel 5. The bottom of the filter barrel 5 is sealed.

[0050] Inner barrel 6, the inner barrel 6 is fixedly installed at the bottom of the filter barrel 5, the diameter of the inner barrel 6 is smaller than the inner diameter of the filter barrel 5, there is a space between the inner barrel 6 and the filter barrel 5 that can hold the medicine liquid, the inner barrel 6 is fixedly connected to the liquid supply pipe 4 through the first through hole 29, and the top of the inner barrel 6 is provided with a fixing hole 7.

[0051] The filter cylinder 8 is mounted on the fixing hole 7 and has filter holes 9 that are smaller than the dregs.

[0052] The liquid medicine in the liquid supply device enters the inner barrel 6 through the liquid supply pipe 4. The liquid medicine continuously enters the inner barrel 6, so that the liquid medicine enters the filter cylinder 8 through the fixing hole 7. The residue in the liquid medicine is filtered and left on the surface of the filter cylinder 8. The clean liquid medicine flows out from the inside of the filter cylinder 8 into the space between the inner barrel 6 and the filter barrel 5.

[0053] Multiple fixing holes 7 are provided, and the fixing holes 7 are equidistantly arranged on the top of the inner barrel 6 along the circumferential direction. A fixing groove 10 concentric with the fixing hole 7 is provided on the outside of the fixing hole 7. The diameter of the fixing groove 10 is adapted to the diameter of the filter cylinder 8. The fixing groove 10 is detachably threaded to one end of the filter cylinder 8.

[0054] The top of the filter barrel 5 is detachably fixed with a cover plate 11, and the bottom of the cover plate 11 is provided with a fixing plate 12. The fixing plate 12 is threadedly connected to one end of the filter barrel 8. The fixing plate 12 is provided with a positioning groove 13 corresponding to the fixing groove 10. The diameter of the positioning groove 13 is adapted to the diameter of the filter barrel 8.

[0055] The filter cartridge 5 and the cover plate 11 can be connected with bolts and nuts. The filter cylinder 8 is fixedly connected between the fixing plate 12 and the fixing groove 10. After the filter cylinder 8 has been filtering for a long time, the filter screen on the filter cylinder 8 will be damaged, affecting the filtration quality. By unscrewing the bolts and nuts to separate the cover plate 11 and the filter cartridge 5, rotating the fixing plate 12 to separate the fixing plate 12 from the filter cylinder 8, and then rotating the filter cylinder 8 to separate the fixing groove 10 from the filter cylinder 8, the filter cylinder 8 can be replaced, which is convenient for disassembly and replacement.

[0056] A base 14 is fixedly installed inside the inner tub 6. A receiving chamber 15 is provided between the base 14 and the bottom of the inner tub 6. A liquid inlet hole 16 is provided at the center of the top of the base 14. A center hole 17 corresponding to the liquid inlet hole 16 is provided at the top of the inner tub 6. The cleaning device 3 is installed on the base 14.

[0057] The cleaning device 3 includes:

[0058] A rotating shaft 18 is rotatably mounted on a base 14. The end 22 of the rotating shaft 18 is connected to the center hole 17 on the inner tub 6. One end of the rotating shaft 18 passes through the base 14 and is connected to the bottom of the inner tub 6.

[0059] The outer tube 19 is rotatably mounted on the base 14, and is fixedly connected to the rotating shaft 18 and the liquid inlet 16.

[0060] A rotating tube 20 is fixedly mounted on the outer tube 19. One end of the rotating tube 20 is connected to the top of the inner tub 6. The diameter of the rotating tube 20 is adapted to the diameter of the fixing hole 7.

[0061] The power source 21 is fixedly mounted on the frame 1. The output shaft of the power source 21 is connected to one end of the rotating shaft 18. The power source 21 is used to rotate the rotating shaft 18.

[0062] The power source 21 can use a motor to rotate the rotating shaft 18. When the filter cartridge 8 needs to be cleaned during the filtration process, the power source 21 rotates the rotating shaft 18 to drive the rotating tube 20 on the outer tube 19 to rotate. The rotating tube 20 is rotated to the fixed hole 7, and the medicine in the inner barrel 6 cannot enter the filter cartridge 8. At this time, the pressure inside the filter cartridge 8 is less than the pressure between the filter barrel 5 and the inner barrel 6, so that the filtered medicine is backwashed into the filter cartridge 8, thereby flushing the medicine residue on the filter cartridge 8 into the rotating tube 20. The medicine liquid with medicine residue enters the receiving chamber 15 between the base 14 and the bottom of the inner barrel 6 through the outer tube 19. After cleaning one filter cartridge 8, the rotating tube 20 is connected to different fixed holes 7 by rotating the outer tube 19, thereby backwashing the filter cartridge 8. Backwashing the filter cartridge 8 while filtering can improve the filtration efficiency of the filter cartridge 8. When not cleaning, the rotating tube 20 is not connected to the fixed hole 7.

[0063] The diameter of the end 22 of the rotating shaft 18 is greater than the diameter of the central hole 17, the diameter of the central part 23 of the rotating shaft 18 is smaller than the diameter of the central hole 17, the diameter of the outer tube 19 is adapted to the diameter of the liquid inlet hole 16, and a second through hole 24 is provided on the top of the outer tube 19, the diameter of the second through hole 24 is adapted to the diameter of the central part 23 of the rotating shaft 18.

[0064] The diameter of the end 22 of the rotating shaft 18 is larger than the diameter of the central hole 17, which can seal the top of the inner barrel 6. The diameter of the outer tube 19 is matched with the diameter of the liquid inlet hole 16, which seals the top of the base 14. The diameter of the second through hole 24 is matched with the diameter of the central part 23 of the rotating shaft 18, which seals the top of the outer tube 19 to prevent the medicine from flowing out and contaminating the filtered medicine.

[0065] An infusion pipe 25 is provided on the side of the filter bucket 5 opposite to the first through hole 29. The infusion pipe 25 is used to discharge the filtered medicine. A recovery pipe 26 is provided at the bottom of the container 15. The recovery pipe 26 is used to collect the medicine with residue.

[0066] The filter cartridge 8 includes a filter element 27 and fixing blocks 28 at both ends of the filter element 27. The fixing blocks 28 are fixedly connected to the fixing groove 10 and the positioning groove 13 respectively. The filter element 27 is pleated in both the circumferential and radial directions. The inner diameter of the filter element 27 is adapted to the inner diameter of the fixing groove 10.

[0067] The filter element 27 is pleated in both the circumferential and radial directions, which increases the surface area that can be filtered, thus enabling better filtration of the medicine.

[0068] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A pharmaceutical liquid filtration device, characterized in that, Including a frame (1), on which a liquid supply device is provided, and further comprising: A filter device (2) is provided on one side of the liquid supply device. A filter cartridge (8) is provided on the filter device (2). The filter device (2) is used to filter the liquid medicine. A cleaning device (3) is installed inside the filter device (2) and is used to clean the filter cartridge (8).

2. The pharmaceutical filtration device according to claim 1, characterized in that, The liquid supply device is provided with a liquid supply pipe (4), and the filter device (2) includes: The filter barrel (5) is fixedly installed at the center of the frame (1). A first through hole (29) is provided on one side of the filter barrel (5). The liquid supply pipe (4) is fixedly connected to one side of the filter barrel (5). The bottom of the filter barrel (5) is sealed. The inner barrel (6) is fixedly installed at the bottom of the filter barrel (5). The diameter of the inner barrel (6) is smaller than the inner diameter of the filter barrel (5). There is a space between the inner barrel (6) and the filter barrel (5) that can hold the medicine liquid. The inner barrel (6) is fixedly connected to the liquid supply pipe (4) through the first through hole (29). The top of the inner barrel (6) is provided with a fixing hole (7). The filter cylinder (8) is set on the fixing hole (7) and the filter cylinder (8) is provided with filter holes (9) smaller than the dregs.

3. The pharmaceutical liquid filtration device according to claim 2, characterized in that, The fixing holes (7) are provided in multiple ways. The fixing holes (7) are equidistantly arranged on the top of the inner barrel (6) along the circumferential direction. The fixing groove (10) is provided on the outside of the fixing hole (7) and is concentric with the fixing hole (7). The diameter of the fixing groove (10) is adapted to the diameter of the filter cylinder (8). The fixing groove (10) is detachably threaded to one end of the filter cylinder (8).

4. The pharmaceutical liquid filtration device according to claim 2, characterized in that, The top of the filter barrel (5) is detachably fixed with a cover plate (11), and the bottom of the cover plate (11) is provided with a fixing plate (12). The fixing plate (12) is threaded to one end of the filter cylinder (8). The fixing plate (12) is provided with a positioning groove (13) corresponding to the fixing groove (10). The diameter of the positioning groove (13) is adapted to the diameter of the filter cylinder (8).

5. A pharmaceutical filtration device according to claim 2, characterized in that, The inner tub (6) is fixedly provided with a base (14), and the base (14) and the bottom of the inner tub (6) are provided with a receiving chamber (15). The base (14) is provided with a liquid inlet hole (16) at the top center. The inner tub (6) is provided with a center hole (17) corresponding to the liquid inlet hole (16) at the top. The cleaning device (3) is provided on the base (14).

6. The pharmaceutical liquid filtration device according to claim 1, characterized in that, The cleaning device (3) includes: A rotating shaft (18) is rotatably mounted on a base (14). The end (22) of the rotating shaft (18) is connected to the center hole (17) on the inner barrel (6). One end of the rotating shaft (18) passes through the base (14) and is connected to the bottom of the inner barrel (6). The outer tube (19) is rotatably mounted on the base (14), the outer tube (19) is fixedly connected to the rotating shaft (18), and the outer tube (19) is fixedly connected to the liquid inlet (16); Rotating tube (20), the rotating tube (20) is fixedly installed on the outer tube (19), one end of the rotating tube (20) is connected to the top of the inner barrel (6), and the diameter of the rotating tube (20) is adapted to the diameter of the fixing hole (7); A power source (21) is fixedly mounted on the frame (1). The output shaft of the power source (21) is connected to one end of the rotating shaft (18). The power source (21) is used to rotate the rotating shaft (18).

7. A pharmaceutical filtration device according to claim 6, characterized in that, The diameter of the end (22) of the rotating shaft (18) is greater than the diameter of the central hole (17), the diameter of the central part (23) of the rotating shaft (18) is smaller than the diameter of the central hole (17), the diameter of the outer tube (19) is adapted to the diameter of the liquid inlet (16), and a second through hole (24) is provided on the top of the outer tube (19), the diameter of the second through hole (24) is adapted to the diameter of the central part (23) of the rotating shaft (18).

8. A pharmaceutical filtration device according to claim 5, characterized in that, An infusion tube (25) is provided on the side of the filter bucket (5) opposite to the first through hole (29). The infusion tube (25) is used to discharge the filtered medicine. A recovery tube (26) is provided at the bottom of the container (15). The recovery tube (26) is used to collect the medicine with residue.

9. A pharmaceutical filtration device according to claim 6, characterized in that, The filter cartridge (8) includes a filter element (27) and fixing blocks (28) at both ends of the filter element (27). The fixing blocks (28) are fixedly connected to the fixing groove (10) and the positioning groove (13) respectively. The filter element (27) is pleated in both the circumferential and radial directions. The inner diameter of the filter element (27) is adapted to the inner diameter of the fixing groove (10).

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