Multi-station multi-stage filtering device and filtering system

Abstract

The invention relates to a multi-station multi-stage filtering device which comprises a first filter, a second filter, a third filter, a fourth filter, a fifth filter, a sixth filter, a bracket assembly, three groups of lifting assemblies, three groups of overturning assemblies and six groups of cleaning assemblies, the left side of the support assembly is connected with the first filter, the second filter and the third filter, and the filtering system comprising the multi-station multi-stage filtering device comprises a main communicating pipeline, a second communicating pipeline, a third communicating pipeline and a fourth communicating pipeline; the main communication pipeline is respectively connected in series with a fourth filter, a fifth filter and a sixth filter, the left end of the main communication pipeline is communicated with a material liquid supply source, and the right end of the main communication pipeline is communicated with a material liquid outlet pipe; the multi-station multi-stage filtering device and the filtering system are provided for overcoming the existing defects, the structure is simple, and multi-stage filtering of multi-stage and multi-layer biological feed liquid can be achieved; and the material filtering efficiency is improved.

Description

Technical Field

[0001] The invention relates to a multi-station multi-stage filtering device and a filtering system. Background Art

[0002] The biopharmaceutical industry involves the fields of biosafety and biohealth, which have higher requirements for equipment than conventional equipment. Liquid materials will undergo single-stage or multi-stage filtration in special sections. The filters used by existing pharmaceutical factories include single-core filters and multi-core filters. The longer the size, the larger the filter size and the higher the quality. The filter element in the filter housing is a consumable and often needs to be replaced. The disassembly and assembly of the filter housing of the multi-core filter will increase labor costs. At the same time, biopharmaceuticals are highly time-sensitive. When the filter is replaced, the filtration system will be in a stagnant state due to the replacement, increasing the risk of material contamination. When the filter element is replaced, the filter housing also needs to be cleaned and sterilized. Traditional cleaning and sterilization processes transfer such large filter housings to a sterilization cabinet for independent sterilization, wasting time and manpower.

[0003] The existing technology CN220090691U has the following shortcomings: although it can realize online cleaning, the filter housing is inconvenient to disassemble and assemble, the degree of automation is very low, and the accumulated water will leak out after the filter housing is disassembled and assembled, and the biopharmaceutical sterilization conditions are not considered.

[0004] The existing technology CN220090788U has a patent deficiency in that it does not consider the online connection of the filtration system to achieve online filtration of materials and sterilization of the filter shell. The single-station efficiency is very low, there is no pipeline slipknot device, and multi-stage filtration is not considered.

[0005] Therefore, in view of the above problems, a multi-station multi-stage filtering device and a filtering system are proposed. Summary of the invention

[0006] The purpose of the present invention is to overcome the existing defects and provide a multi-station multi-stage filtering device and a filtering system, which has a simple structure and can realize multi-stage filtration of multi-stage and multi-layer biological liquids; thereby improving the efficiency of material filtration.

[0007] The technical solution to achieve the above object is: a multi-station multi-stage filtering device, including a first filter, a second filter, a third filter, a fourth filter, a fifth filter, a sixth filter, a bracket assembly, three sets of lifting assemblies, three sets of flipping assemblies and six sets of cleaning assemblies;

[0008] The left side of the bracket assembly is respectively connected to the first filter, the second filter and the third filter, and the right side is respectively connected to the fourth filter, the fifth filter and the sixth filter; the middle of the bracket assembly is respectively connected to three groups of lifting assemblies, and the upper end of each group of lifting assemblies is connected to a group of flipping assemblies; six groups of cleaning assemblies are respectively connected to the first filter, the second filter, the third filter, the fourth filter, the fifth filter and the sixth filter.

[0009] Preferably, the bracket assembly includes a base frame, the middle part of which is connected to the vertical frame; the first filter, the second filter and the third filter are each connected to the left side of the vertical frame through a group of base components; the fourth filter, the fifth filter and the sixth filter are each connected to the right side of the vertical frame through a group of base components.

[0010] Preferably, the base assembly includes a filter base, the upper end of the filter base is connected to a filter clamp, and the corresponding filter is connected through the filter clamp; the lower end of the filter base is connected to a support leg; the lower end of the filter base is respectively connected to a filter inlet pipe and a filter outlet pipe.

[0011] Preferably, the lifting assembly includes a lifting push rod, the lower end of the lifting push rod is connected to the lower end of the side wall of the stand through a bottom fixing member, the upper end of the lifting push rod is rotatably connected to the flip main shaft, both ends of the flip main shaft are rotatably connected to a guide rod, the guide rod is slidably connected to a slider, and the slider is fixedly connected to the side wall of the stand.

[0012] Preferably, the flip assembly includes a flip plate, the flip plate is fixedly connected to the flip main shaft, the other end of the flip plate is connected to a lifting wire, and the lower end of the lifting wire is connected to a lifting quick-release connector.

[0013] Preferably, it also includes a flipping drive assembly, wherein the upper end of one of the guide rods is connected to a fixed plate, and the flipping drive assembly is connected to the fixed plate; the flipping drive assembly includes a servo motor, and the output end of the servo motor is connected to a driving gear, and the driving gear is meshedly connected to a driven gear, and the driven gear is fixedly connected to one end of the flip main shaft.

[0014] Preferably, the cleaning assembly comprises a cleaning replacement rod, one end of which is connected to a cleaning spray ball, an outer wall of which is connected to a cleaning rod quick-release clamp, and a corresponding filter is connected via the cleaning rod quick-release clamp.

[0015] Preferably, a liquid receiving and pipetting tray is disposed on the bottom frame below the first filter, the second filter, the third filter, the fourth filter, the fifth filter and the sixth filter.

[0016] A filtering system including a multi-station multi-stage filtering device, comprising a main communicating pipe, a second communicating pipe, a third communicating pipe and a fourth communicating pipe; the main communicating pipe is connected in series with a fourth filter, a fifth filter and a sixth filter respectively, the left end of the main communicating pipe is connected to a material liquid supply source, and the right end is connected to a material liquid outlet pipe;

[0017] Both ends of the second communicating pipe are connected to the main communicating pipe, and the middle of the second communicating pipe is connected to the first filter; both ends of the third communicating pipe are connected to the main communicating pipe, and the middle of the third communicating pipe is connected to the second filter; both ends of the fourth communicating pipe are connected to the main communicating pipe, and the middle of the fourth communicating pipe is connected to the third filter.

[0018] Preferably, it also includes a main cleaning water supply pipe, a first cleaning water supply pipe, a second cleaning water supply pipe, a third cleaning water supply pipe, a fourth cleaning water supply pipe, a fifth cleaning water supply pipe and a sixth cleaning water supply pipe;

[0019] The main cleaning water supply pipe is connected to the main connecting pipe; one end of the first cleaning water supply pipe is connected to the main connecting pipe, and the other end is connected to the cleaning port of the fourth filter; one end of the second cleaning water supply pipe is connected to the main connecting pipe, and the other end is connected to the cleaning port of the fifth filter; one end of the third cleaning water supply pipe is connected to the main connecting pipe, and the other end is connected to the cleaning port of the sixth filter;

[0020] One end of the fourth cleaning water supply pipe is connected to the second connecting pipe, and the other end is connected to the cleaning port of the first filter; one end of the fifth cleaning water supply pipe is connected to the third connecting pipe, and the other end is connected to the cleaning port of the second filter; one end of the sixth cleaning water supply pipe is connected to the fourth connecting pipe, and the other end is connected to the cleaning port of the third filter.

[0021] The beneficial effects of the present invention are as follows: the multi-station multi-stage filtering device and filtering system have a simple structure and can realize multi-stage filtration of multi-stage and multi-layered biological liquids; the multi-station design of the system improves the efficiency of material filtration; the filter housing can be automatically lifted when the filter element is removed and replaced, and the lifting object can be converted by rotation; the filter can be cleaned and sterilized online, saving the operation time of offline cleaning and sterilization; the filter docking installation adopts a slipknot form to facilitate the disassembly and maintenance of the filter during lifting; the frame device integrates the filter and the rotating and lifting devices, and the equipped liquid receiving and transfer tray can collect the accumulated liquid generated when the filter is disassembled and assembled to avoid splashing on the ground; the multi-station design realizes the high efficiency of the biopharmaceutical filtration production line and avoids the production line being in a stagnant standby state during operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a multi-station multi-stage filtering device of the present invention;

[0023] Figure 2 is a detailed diagram of the connection of the cleaning assembly of the present invention;

[0024] Figure 3 It is a schematic diagram of the connection between the lifting assembly and the flip assembly of the present invention;

[0025] Figure 4 is a detailed view of the lifting assembly of the present invention;

[0026] Figure 5 is a detailed view of the flip assembly of the present invention;

[0027] Figure 6 is a detailed view of the connection of the flip plate of the present invention;

[0028] Figure 7 It is a connection detail diagram of the flip spindle of the present invention;

[0029] Figure 8 It is a schematic diagram of the filtering system of the multi-station multi-stage filtering device of the present invention.

[0030] In the figure: 1. First filter; 2. Second filter; 3. Third filter; 4. Fourth filter; 5. Fifth filter; 6. Sixth filter; 7. Base frame; 8. Stand; 9. Filter base; 10. Filter clamp; 11. Leg; 12. Filter inlet pipe; 13. Filter outlet pipe; 14. Lifting push rod; 15. Bottom fixing piece; 16. Turning spindle; 17. Guide rod; 18. Sliding block; 19. Turning plate; 20. Lifting wire; 21. Lifting quick-release connector; 22. Fixing plate; 23. Servo motor; 24. Active Gear; 25, driven gear; 26, liquid receiving and transferring plate; 27, cleaning replacement rod; 28, cleaning spray ball; 29, cleaning rod quick-release clamp; 30, main connecting pipe; 31, material liquid supply source; 32, material liquid outlet pipe; 33, second connecting pipe; 34, third connecting pipe; 35, fourth connecting pipe; 36, main cleaning water supply pipe; 37, first cleaning water supply pipe; 38, second cleaning water supply pipe; 39, third cleaning water supply pipe; 40, fourth cleaning water supply pipe; 41, fifth cleaning water supply pipe; 42, sixth cleaning water supply pipe. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] like Figure 1-7 As shown, a multi-station multi-stage filtering device includes a first filter 1, a second filter 2, a third filter 3, a fourth filter 4, a fifth filter 5, a sixth filter 6, a bracket assembly, three sets of lifting assemblies, three sets of flipping assemblies and six sets of cleaning assemblies; the left side of the bracket assembly is respectively connected to the first filter 1, the second filter 2 and the third filter 3, and the right side is respectively connected to the fourth filter 4, the fifth filter 5 and the sixth filter 6; the middle of the bracket assembly is respectively connected to three sets of lifting assemblies, and the upper end of each set of lifting assemblies is connected to a set of flipping assemblies; the six sets of cleaning assemblies are respectively connected to the first filter 1, the second filter 2, the third filter 3, the fourth filter 4, the fifth filter 5 and the sixth filter 6. A consumable filter element is installed inside the filter.

[0034] like Figure 1 As shown, the support assembly includes a bottom frame 7, the middle of the bottom frame 7 is connected to a vertical frame 8; the first filter 1, the second filter 2 and the third filter 3 are connected to the left side of the vertical frame 8 through a set of base components; the fourth filter 4, the fifth filter 5 and the sixth filter 6 are connected to the right side of the vertical frame 8 through a set of base components. A liquid receiving and pipetting tray 26 is provided on the bottom frame 7 below the first filter 1, the second filter 2, the third filter 3, the fourth filter 4, the fifth filter 5 and the sixth filter 6. The liquid receiving and pipetting tray 26 can collect the accumulated liquid generated when the filter is disassembled and assembled to avoid splashing on the ground.

[0035] Specifically, when in use, the first filter 1, the second filter 2 and the third filter 3 are connected in series to form a multi-stage filtering device for biological liquid with multiple levels and layers; the fourth filter 4, the fifth filter 5 and the sixth filter 6 are connected in series to form a multi-stage filtering device for biological liquid with multiple levels and layers; when one group is performing filtering work, the other group can perform maintenance, replace filter elements, etc., so that the filtering work will not be suspended, thereby improving work efficiency.

[0036] Specifically, three filters are used for three-stage filtration. The biological stock solution is filtered through filter elements with different densities three times, and the filtered product can be effectively obtained, reducing production risks. Two three-stage filtration lines, this design can achieve uninterrupted filtration of materials, that is, when the first filter line completes filtration and the filter element needs to be removed and replaced, the second filter line can be used to complete continuous filtration of the material, so that the filtration production line is uninterrupted.

[0037] like Figure 1 , 2 As shown, the base assembly includes a filter base 9, the upper end of the filter base 9 is connected to a filter clamp 10, and the corresponding filter is connected through the filter clamp 10; the lower end of the filter base 9 is connected to a support leg 11; the lower end of the filter base 9 is respectively connected to a filter inlet pipe 12 and a filter outlet pipe 13.

[0038] Specifically, the corresponding filter is connected to the filter base 9 through the filter clamp 10; the material supply liquid enters the filter from the filter inlet pipe 12, and is discharged from the filter outlet pipe 13 to enter the next filter after filtering.

[0039] like Figure 3 , 4As shown, the lifting assembly includes a lifting push rod 14, the lower end of which is connected to the lower end of the side wall of the stand 8 through a bottom fixing member 15, the upper end of the lifting push rod 14 is rotatably connected to a flip spindle 16, and the two ends of the flip spindle 16 are rotatably connected to a guide rod 17, and a slider 18 is slidably connected to the guide rod 17, and the slider 18 is fixedly connected to the side wall of the stand 8. A rolling steel ball is arranged inside the slider 18, and the slider can move up and down along the lifting guide column, and the slider is fixed to the slider fixing plate by a fastening bolt. The slider fixing plate is welded to the base frame 7, and the upper ends of the guide rod 17 and the lifting push rod 14 are both linked to the flip spindle 16 axis. When the lifting push rod is extended and retracted up and down, the flip assembly can be driven to move up and down.

[0040] like Figure 3 , 4 As shown in , 5, 6, and 7, the flip assembly includes a flip plate 19, which is fixedly connected to the flip main shaft 16, and the other end of the flip plate 19 is connected to a lifting wire 20, and the lower end of the lifting wire 20 is connected to a lifting quick-release connector 21. It also includes a flip drive assembly, in which the upper end of a guide rod 17 is connected to a fixed plate 22, and the flip drive assembly is connected to the fixed plate 22; the flip drive assembly includes a servo motor 23, the output end of the servo motor 23 is connected to a driving gear 24, and the driving gear 24 is meshed and connected to a driven gear 25, and the driven gear 25 is fixedly connected to one end of the flip main shaft 16.

[0041] Specifically, the proximity sensor is fixed in the motor box, and the sensing part extends out of the motor box. When the flip plate 19 rotates at a low speed with the servo motor, it senses the proximity sensor, and the proximity sensor controls the servo motor to stop rotating. The flip plate 19 completes the rotation positioning, and the control of the rotating plate is completed by controlling the forward and reverse rotation of the servo motor.

[0042] Specifically, the first filter 1, the second filter 2, and the third filter 3 are installed on the left side of the stand 8, and the fourth filter 4, the fifth filter 5, and the sixth filter 6 are installed on the right side of the stand 8, the first filter 1 is opposite to the fourth filter 4; the second filter 2 is opposite to the fifth filter 5; the third filter 3 is opposite to the sixth filter 6; the flip plate 19 can be flipped to the top of the first filter 1 to act on the first filter 1, and can also be flipped to the top of the fourth filter 4 to act on the fourth filter 4; when flipping, the servo motor 23 rotates to drive the driving gear 24 to rotate, the driving gear 24 rotates to drive the meshing driven gear 25 to rotate, the driven gear 25 rotates to drive the flip main shaft 16 to rotate, and the flip main shaft 16 rotates to drive the connected flip plate 19 to flip to the top of the corresponding filter; the filter can be connected by the lifting quick-release joint 21 at the lower end of the lifting wire 20, and the lifting push rod 14 is raised, so that the lifting quick-release joint 21 drives the filter housing to rise, so that the filter housing is separated from the filter element, and a new filter element is replaced; the whole process is mechanically operated, avoiding manual operation and reducing personnel fatigue.

[0043] like Figure 2 As shown, the cleaning assembly includes a cleaning replacement rod 27, one end of which is connected to a cleaning spray ball 28, and the outer wall of the cleaning replacement rod 27 is connected to a cleaning rod quick-release clamp 29, which is connected to the corresponding filter through the cleaning rod quick-release clamp 29.

[0044] Specifically, when the first filter 1, the second filter 2, and the third filter 3 on the left side of the stand 8 are performing filtering work, the fourth filter 4, the fifth filter 5, and the sixth filter 6 on the right side of the stand 8 can be cleaned, and a group of cleaning components are respectively connected to the fourth filter 4, the fifth filter 5, and the sixth filter 6; the cleaning replacement rod 27 is connected to the filter through the cleaning rod quick-release clamp 29, and the cleaning replacement rod 27 is connected to the water source to clean the inside of the filter.

[0045] like Figure 8 As shown, a filtering system including a multi-station multi-stage filtering device includes a main communicating pipe 30, a second communicating pipe 33, a third communicating pipe 34 and a fourth communicating pipe 35; the main communicating pipe 30 is connected in series with a fourth filter 4, a fifth filter 5 and a sixth filter 6 respectively, and the left end of the main communicating pipe 30 is connected to a material liquid supply source 31, and the right end is connected to a material liquid outlet pipe 32;

[0046] Specifically, both ends of the second communicating pipe 33 are connected to the main communicating pipe 30, and the middle of the second communicating pipe 33 is connected to the first filter 1; both ends of the third communicating pipe 34 are connected to the main communicating pipe 30, and the middle of the third communicating pipe 34 is connected to the second filter 2; both ends of the fourth communicating pipe 35 are connected to the main communicating pipe 30, and the middle of the fourth communicating pipe 35 is connected to the third filter 3.

[0047] Specifically, when the fourth filter 4, the fifth filter 5 and the sixth filter 6 are performing filtering work, the valves on the second connecting pipe 33, the third connecting pipe 34 and the fourth connecting pipe 35 are closed, and the material liquid supply source 31 supplies materials into the main connecting pipe 30, and then enters the fourth filter 4, the fifth filter 5 and the sixth filter 6 in turn, and enters the material liquid outlet pipe 32; when the first filter 1, the second filter 2 and the third filter 3 are performing filtering work, the valves of the fourth filter 4, the fifth filter 5 and the sixth filter 6 connecting the main connecting pipe 30 are closed, so that the material liquid supply source 31 supplies materials into the main connecting pipe 3, enters the first filter 1 through the second connecting pipe 33, enters the second filter 2 through the third connecting pipe 34 and enters the third filter 3 through the fourth connecting pipe 35, and flows out to the material liquid outlet pipe 32.

[0048] Specifically, it also includes a main cleaning water supply pipe 36, a first cleaning water supply pipe 37, a second cleaning water supply pipe 38, a third cleaning water supply pipe 39, a fourth cleaning water supply pipe 40, a fifth cleaning water supply pipe 41 and a sixth cleaning water supply pipe 42;

[0049] Specifically, the main cleaning water supply pipe 36 is connected to the main connecting pipe 30; one end of the first cleaning water supply pipe 37 is connected to the main connecting pipe 30, and the other end is connected to the cleaning port of the fourth filter 4; one end of the second cleaning water supply pipe 38 is connected to the main connecting pipe 30, and the other end is connected to the cleaning port of the fifth filter 5; one end of the third cleaning water supply pipe 39 is connected to the main connecting pipe 30, and the other end is connected to the cleaning port of the sixth filter 6;

[0050] Specifically, one end of the fourth cleaning water supply pipe 40 is connected to the second connecting pipe 33, and the other end is connected to the cleaning port of the first filter 1; one end of the fifth cleaning water supply pipe 41 is connected to the third connecting pipe 34, and the other end is connected to the cleaning port of the second filter 2; one end of the sixth cleaning water supply pipe 42 is connected to the fourth connecting pipe 35, and the other end is connected to the cleaning port of the third filter 3.

[0051] Specifically, when cleaning the fourth filter 4, the fifth filter 5 and the sixth filter 6, the valves on the second communicating pipe 33, the third communicating pipe 34 and the fourth communicating pipe 35 are closed, and the main cleaning water supply pipe 36 supplies cleaning water into the main communicating pipe 30, and then enters the fourth filter 4, the fifth filter 5 and the sixth filter 6 in sequence for cleaning.

[0052] Specifically, when cleaning the first filter 1, the second filter 2 and the third filter 3, the valves of the fourth filter 4, the fifth filter 5 and the sixth filter 6 connected to the main communicating pipe 30 are closed, and the main cleaning water supply pipe 36 supplies cleaning water into the main communicating pipe 30, and the cleaning water enters the first filter 1 through the second communicating pipe 33, enters the second filter 2 through the third communicating pipe 34 and enters the third filter 3 through the fourth communicating pipe 35 in sequence, and the cleaning operation is performed;

[0053] Specifically, all valves may be opened at the same time, and the first filter 1 , the second filter 2 , the third filter 3 , the fourth filter 4 , the fifth filter 5 and the sixth filter 6 may be cleaned at the same time.

[0054] The multi-station multi-stage filtration device and filtration system have a simple structure and can realize multi-stage filtration of multi-stage and multi-layered biological liquids; the multi-station design of the system improves the efficiency of material filtration; the filter housing can be automatically lifted when the filter element is removed and replaced, and the lifting object can be changed by rotation; the filter can be cleaned and sterilized online, saving the operation time of offline cleaning and sterilization; the filter docking installation adopts a slipknot form to facilitate the disassembly and maintenance of the filter during lifting; the frame device integrates the filter and the rotating and lifting devices, and the equipped liquid receiving and transfer tray can collect the accumulated liquid generated when the filter is removed and installed to avoid splashing on the ground; the multi-station design realizes the high efficiency of the biopharmaceutical filtration production line and avoids the production line being in a stagnant standby state during operation and maintenance.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-station multi-stage filtering device, It is characterized in that It comprises a first filter (1), a second filter (2), a third filter (3), a fourth filter (4), a fifth filter (5), a sixth filter (6), a bracket assembly, three sets of lifting assemblies, three sets of flipping assemblies and six sets of cleaning assemblies; The left side of the bracket assembly is respectively connected to the first filter (1), the second filter (2) and the third filter (3), and the right side is respectively connected to the fourth filter (4), the fifth filter (5) and the sixth filter (6); the middle of the bracket assembly is respectively connected to three groups of lifting assemblies, and the upper end of each group of lifting assemblies is connected to a group of flipping assemblies; the six groups of cleaning assemblies are respectively connected to the first filter (1), the second filter (2), the third filter (3), the fourth filter (4), the fifth filter (5) and the sixth filter (6).

2. The multi-station multi-stage filtering device according to claim 1, It is characterized in that The support assembly comprises a base frame (7), the middle part of which is connected to a vertical frame (8); the first filter (1), the second filter (2) and the third filter (3) are each connected to the left side of the vertical frame (8) via a group of base assemblies; the fourth filter (4), the fifth filter (5) and the sixth filter (6) are each connected to the right side of the vertical frame (8) via a group of base assemblies.

3. The multi-station multi-stage filtering device according to claim 2, It is characterized in that The base assembly comprises a filter base (9), the upper end of the filter base (9) is connected to a filter clamp (10), and the corresponding filter is connected via the filter clamp (10); the lower end of the filter base (9) is connected to a support leg (11); and the lower end of the filter base (9) is respectively connected to a filter inlet pipe (12) and a filter outlet pipe (13).

4. The multi-station multi-stage filtering device according to claim 2, It is characterized in that The lifting assembly comprises a lifting push rod (14), the lower end of which is connected to the lower end of the side wall of the stand (8) through a bottom fixing member (15), the upper end of which is rotatably connected to a flip main shaft (16), and the two ends of which are rotatably connected to a guide rod (17), the guide rod (17) being slidably connected to a slider (18), and the slider (18) being fixedly connected to the side wall of the stand (8).

5. The multi-station multi-stage filtering device according to claim 4, It is characterized in that The flip assembly comprises a flip plate (19), the flip plate (19) is fixedly connected to the flip main shaft (16), the other end of the flip plate (19) is connected to a lifting steel wire (20), and the lower end of the lifting steel wire (20) is connected to a lifting quick-release connector (21).

6. The multi-station multi-stage filtering device according to claim 4, It is characterized in that The invention also comprises a flip driving assembly, wherein the upper end of one of the guide rods (17) is connected to a fixed plate (22), and the flip driving assembly is connected to the fixed plate (22); the flip driving assembly comprises a servo motor (23), the output end of the servo motor (23) is connected to a driving gear (24), the driving gear (24) is meshedly connected to a driven gear (25), and the driven gear (25) is fixedly connected to one end of the flip main shaft (16).

7. The multi-station multi-stage filtering device according to claim 1, It is characterized in that The cleaning assembly comprises a cleaning replacement rod (27), one end of the cleaning replacement rod (27) is connected to a cleaning spray ball (28), the outer wall of the cleaning replacement rod (27) is connected to a cleaning rod quick-release clamp (29), and the corresponding filter is connected via the cleaning rod quick-release clamp (29).

8. The multi-station multi-stage filtering device according to claim 2, It is characterized in that A liquid receiving and transfer tray (26) is provided on the bottom frame (7) below the first filter (1), the second filter (2), the third filter (3), the fourth filter (4), the fifth filter (5) and the sixth filter (6).

9. A filtration system comprising the multi-station multi-stage filtration device according to claim 1, It is characterized in that It comprises a main communicating pipe (30), a second communicating pipe (33), a third communicating pipe (34) and a fourth communicating pipe (35); the main communicating pipe (30) is respectively connected in series with a fourth filter (4), a fifth filter (5) and a sixth filter (6); the left end of the main communicating pipe (30) is connected to a material liquid supply source (31), and the right end is connected to a material liquid outlet pipe (32); Both ends of the second communicating pipe (33) are connected to the main communicating pipe (30), and the middle part of the second communicating pipe (33) is connected to the first filter (1); both ends of the third communicating pipe (34) are connected to the main communicating pipe (30), and the middle part of the third communicating pipe (34) is connected to the second filter (2); both ends of the fourth communicating pipe (35) are connected to the main communicating pipe (30), and the middle part of the fourth communicating pipe (35) is connected to the third filter (3).

10. The filtration system of the multi-station multi-stage filtration device according to claim 9, It is characterized in that It also includes a main cleaning water supply pipe (36), a first cleaning water supply pipe (37), a second cleaning water supply pipe (38), a third cleaning water supply pipe (39), a fourth cleaning water supply pipe (40), a fifth cleaning water supply pipe (41) and a sixth cleaning water supply pipe (42); The main cleaning water supply pipe (36) is connected to the main connecting pipe (30); one end of the first cleaning water supply pipe (37) is connected to the main connecting pipe (30), and the other end is connected to the cleaning port of the fourth filter (4); one end of the second cleaning water supply pipe (38) is connected to the main connecting pipe (30), and the other end is connected to the cleaning port of the fifth filter (5); one end of the third cleaning water supply pipe (39) is connected to the main connecting pipe (30), and the other end is connected to the cleaning port of the sixth filter (6); One end of the fourth cleaning water supply pipe (40) is connected to the second connecting pipe (33), and the other end is connected to the cleaning port of the first filter (1); one end of the fifth cleaning water supply pipe (41) is connected to the third connecting pipe (34), and the other end is connected to the cleaning port of the second filter (2); one end of the sixth cleaning water supply pipe (42) is connected to the fourth connecting pipe (35), and the other end is connected to the cleaning port of the third filter (3).

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