A filter device

Abstract

The utility model relates to sewage treatment equipment's technical field especially, and it is a kind of filter device.The filter device of the utility model, characterized by, including frame body setting drive mechanism and multiple filter modules on the frame body;The filter module includes liquid pumping subassembly and filter unit, and the filter unit has filter chamber, and the liquid pumping subassembly is used to extract the filtered liquid in the filter chamber;Supporting rod is provided on the frame body, and the filter module is rotatably arranged on the frame body by the supporting rod;The drive mechanism is used to drive the filter module reciprocating swing to make impurity separate from the surface of the filter unit.The utility model can complete cleaning under the continuous operation state, avoids the impact damage of backwashing to filter material, and simultaneously reduces equipment downtime.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, and in particular to a filtration device. Background Technology

[0002] Wastewater treatment equipment is mainly used to treat and filter wastewater to ensure that the discharged wastewater meets the required standards. The core component of wastewater treatment equipment is the filter module, which has filter plates for filtering wastewater. Through the filtering action of the filter plates, solid impurities in the wastewater are removed.

[0003] In existing wastewater treatment equipment, after a period of use, a significant amount of impurities accumulate on the filter modules, affecting filtration efficiency. To avoid impacting operation, cleaning is typically required, usually using backflushing. However, this not only reduces filtration efficiency but also shortens the lifespan of the filter modules. Utility Model Content

[0004] The purpose of this invention is to provide a filtration device that improves filtration efficiency while extending the service life of the filtration module.

[0005] To solve the above-mentioned technical problems, this utility model provides a filtration device.

[0006] The filtration device of this utility model is characterized in that it includes a frame, a drive mechanism and multiple filtration modules disposed on the frame;

[0007] The filtration module includes a liquid extraction component and a filtration unit. The filtration unit has a filtration chamber, and the liquid extraction component is used to extract the filtered liquid from the filtration chamber.

[0008] The frame is provided with a support rod, and the filter module is rotatably mounted on the frame via the support rod;

[0009] The drive mechanism is used to drive the filter module to swing back and forth so that impurities are removed from the surface of the filter unit.

[0010] Furthermore, the filter module also includes a linkage rod, and there are multiple filter units arranged in parallel at intervals. All of the multiple filter units are rotatably connected to the linkage rod, and the drive mechanism drives the filter units or the linkage rod to make the filter module swing back and forth.

[0011] Furthermore, the filter unit also includes a support shaft and a swing shaft arranged at intervals. The support rod is provided with a plurality of support holes arranged at intervals, and the support shaft is rotatably disposed in the support holes. The linkage rod is provided with a plurality of linkage holes arranged at intervals, and the swing shaft is rotatably disposed in the linkage holes.

[0012] Furthermore, it also includes a pusher, wherein the drive mechanism outputs linear reciprocating motion to drive the pusher to reciprocate linearly, and the pusher has a toggle unit corresponding to each of the plurality of filter modules, the toggle unit being used to push the linkage rod or at least one of the filter modules to swing back and forth.

[0013] Furthermore, the actuating unit includes a first push block and a second push block arranged at intervals, the first push block and the second push block being used to push the filtering unit to swing in opposite directions respectively.

[0014] Furthermore, the driving mechanism is a crank-slider mechanism.

[0015] Furthermore, the liquid extraction assembly includes a collection pipe section and a plurality of liquid extraction branch pipes connected to the collection pipe section. The plurality of liquid extraction branch pipes are arranged parallel to each other along the width direction of the filter chamber, and the liquid extraction branch pipes are provided with a plurality of liquid extraction holes arranged axially and radially along the liquid extraction branch pipes.

[0016] Furthermore, the plurality of the liquid extraction branches are divided into central branches and side branches. The distribution density of the liquid extraction holes on the central branches is less than that on the side branches. The filtration chamber is divided into a central region and a side region. The side regions are located on both sides of the central region. The central branches are located in the central region, and the side branches are located in the side regions.

[0017] Furthermore, the filter unit includes a filter frame and at least two filter plates. The filter frame has filter frame positions corresponding to the number of filter plates. The filter plates are installed in the corresponding filter frame positions to form the filter chamber with the filter frame.

[0018] Furthermore, the filtration unit includes a filter frame and a filter plate installed in the filter frame, wherein the filter plate has a socket for inserting a liquid extraction assembly, and the socket constitutes the filtration chamber.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] This invention achieves automatic cleaning through a mechanical oscillation mechanism. The frame provides overall support, the drive mechanism outputs power, multiple filtration modules process the fluid in parallel, a liquid collection component collects the liquid, and a support rod provides rotational support. When the drive mechanism drives the filtration modules to oscillate back and forth, the resulting centrifugal and inertial forces dislodge impurities adhering to the surface of the filtration units, thus maintaining filtration efficiency. Compared to traditional methods that require shutdown for backwashing, this invention can complete cleaning while operating continuously, avoiding the impact damage to the filter material caused by backwashing and reducing equipment downtime. Attached Figure Description

[0021] Figure 1 This is a top view of one embodiment of the filter device of this utility model with the drive mechanism concealed.

[0022] Figure 2 This is a side view of an embodiment of the filtering device of this utility model;

[0023] Figure 3 for Figure 2 A schematic diagram showing the state of the filter module when the drive mechanism of the filter device in the middle drives the filter module to swing.

[0024] Figure 4 for Figure 1 A top view of the actuating component of the filter device;

[0025] Figure 5 for Figure 1 A schematic diagram showing the state of the filter unit and the liquid extraction assembly when used together.

[0026] Figure 6 for Figure 1 Side view of the filtration unit and the liquid extraction assembly.

[0027] Figure label:

[0028] 1. Frame;

[0029] 10. Drive mechanism;

[0030] 20. Liquid extraction assembly; 21. Manifold section; 22. Liquid extraction branch pipe;

[0031] 30. Filter unit; 31. Support shaft; 32. Swing shaft; 33. Filter frame; 34. Filter plate;

[0032] 40. Linkage rod;

[0033] 50. Support rod;

[0034] 60. Pushing component; 61. First push block; 62. Second push block. Detailed Implementation

[0035] The filtering device of this utility model will now be described with reference to the schematic diagrams, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit this utility model. Based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combinations of different implementation methods without creating technical contradictions; such modifications should all be considered to fall within the protection scope of this patent.

[0036] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly.

[0039] For example, a "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, the term "electrical connection" can refer to a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0040] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0041] The following is in conjunction with the instruction manual appendix. Figure 1 To be continued Figure 6 The filtration device of this utility model will be introduced.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the filtration device of this utility model includes a frame 1, a drive mechanism 10 and multiple filtration modules disposed on the frame 1.

[0043] The filtration module includes a liquid extraction component 20 and a filtration unit 30. The filtration unit 30 has a filtration chamber, and the liquid extraction component 20 is used to extract the filtered liquid from the filtration chamber.

[0044] The frame 1 is provided with a support rod 50, and the filter module is rotatably mounted on the frame 1 via the support rod 50.

[0045] The drive mechanism 10 is used to drive the filter module to swing back and forth so that impurities are removed from the surface of the filter unit 30.

[0046] This invention achieves automatic cleaning through mechanical oscillation. The frame 1 provides overall support, the drive mechanism 10 outputs power, multiple filtration modules process in parallel, the liquid collection component 20 collects the liquid, and the support rod 50 provides rotational support. When the drive mechanism 10 drives the filtration modules to oscillate back and forth, the resulting centrifugal and inertial forces dislodge impurities adhering to the surface of the filter unit 30, thus maintaining filtration efficiency. Compared to traditional methods that require shutdown for backwashing, this invention can complete cleaning while operating continuously, avoiding the impact damage to the filter material caused by backwashing and reducing equipment downtime.

[0047] As a preferred embodiment, a variable frequency motor can be used to drive the oscillation frequency, thereby adapting to the filtration requirements of liquids with different viscosities.

[0048] In some of these embodiments, such as Figure 2 and Figure 3 As shown, the filter module also includes a linkage rod 40. There are multiple filter units 30 arranged in parallel and spaced apart. All filter units 30 are rotatably connected to the linkage rod 40. The drive mechanism 10 drives the filter units 30 or the linkage rod 40 to make the filter module swing back and forth.

[0049] Specifically, the linkage rod 40 can be a solid metal rod or a hollow tubular structure, and its length is determined according to the number and spacing of the filter units 30. The connection methods between the linkage rod 40 and the filter unit 30 include, but are not limited to: rotational connection via bearings, connection via hinged joints, or rotational connection via linkage holes on the linkage rod 40 that engage with the swing shaft 32 of the filter unit 30. The drive mechanism 10 can directly drive any filter unit 30, thereby transmitting the motion to the entire filter module through the linkage rod 40. In other embodiments, the drive mechanism 10 can also choose to directly drive the end of the linkage rod 40, or engage with the linkage rod 40 via a gear and rack mechanism. As a preferred embodiment, the surface of the linkage rod 40 can be coated with an anti-corrosion coating to improve durability.

[0050] In this embodiment, multiple filter units 30 are mechanically coupled via a linkage rod 40 to achieve synchronized oscillation. The linkage rod 40, acting as a rigid connector, effectively transmits driving force, preventing asynchronous oscillation caused by uneven force distribution across individual filter units 30. The parallel-spaced filter units 30 form a unified motion unit under the action of the linkage rod 40, maintaining the independent filtration function of each unit while improving structural stability during oscillation. The drive mechanism 10 can choose to directly drive the linkage rod 40 or any filter unit 30; both driving methods transmit motion to the entire filter module via the linkage rod 40. Therefore, this embodiment significantly reduces the risk of mechanical interference between multiple filter units 30 while maintaining filtration efficiency, extending the equipment maintenance cycle.

[0051] Furthermore, in some of these embodiments, such as Figure 5 As shown, the filter unit 30 also includes a support shaft 31 and a swing shaft 32 arranged at intervals. The support rod 50 is provided with a plurality of support holes arranged at intervals. The support shaft 31 is rotatably disposed in the support holes. The linkage rod 40 is provided with a plurality of linkage holes arranged at intervals. The swing shaft 32 is rotatably disposed in the linkage holes.

[0052] Specifically, the support shaft 31 and the swing shaft 32 can be solid metal shafts or hollow tubular structures, preferably made of stainless steel or carbon steel to balance strength and corrosion resistance. The support holes and linkage holes can be configured as bearing-equipped mounting holes. As a preferred embodiment, shaft retaining rings can be provided at the ends of the support shaft 31 and the swing shaft 32 to prevent axial movement. The distance between the support shaft 31 and the swing shaft 32 should be optimized according to the size of the filter unit 30 and the swing angle.

[0053] In one embodiment, such as Figure 5 As shown, there are two support shafts 31, which are respectively arranged on both sides of the filter unit 30 to provide stable support for the filter unit 30.

[0054] The rotational engagement of the support shaft 31 and the support hole ensures stable support of the filter unit 30 on the frame 1, while also allowing the filter unit 30 to swing around the support shaft 31 with low resistance. The engagement design of the swing shaft 32 and the linkage hole ensures that the driving force of the linkage rod 40 can be evenly transmitted to each filter unit 30, and the spaced support shaft 31 and swing shaft 32 form a stable force transmission path. In this embodiment, the synchronous swing of multiple filter units 30 is less prone to motion interference, significantly improving transmission stability and motion synchronization accuracy, and is less likely to cause loosening of connecting parts or positional displacement due to long-term reciprocating motion.

[0055] In some of these embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the filtration device further includes a pusher 60, and the drive mechanism 10 outputs linear reciprocating motion to drive the pusher 60 to reciprocate linearly. The pusher 60 has a toggle unit corresponding to each of the plurality of filtration modules. The toggle unit is used to push the linkage rod 40 or at least one of the filtration modules, or the filtration unit 30, to swing back and forth.

[0056] Specifically, the pusher 60 can be made of metal or high-strength engineering plastic. The connection between the pusher 60 and the drive mechanism 10 includes, but is not limited to, threaded fastening, pin hinge, or snap-on quick-release structure. The contact surface between the actuating unit and the filter module can be coated with a wear-resistant coating or fitted with rolling bearings to reduce friction loss. The linear reciprocating motion output of the drive mechanism 10 can be achieved through a crank-slider mechanism, a linear motor, or a hydraulic cylinder.

[0057] The linear motion of the drive mechanism 10 is synchronously transmitted to all filter modules via the pusher 60. The one-to-one correspondence between the actuating unit and the filter module eliminates the accumulated backlash error in traditional chain or gear transmissions. During the conversion of linear motion into oscillating motion, the pusher 60, as a rigid force transmission component, avoids the elastic deformation problem present in flexible transmission belts.

[0058] Furthermore, in some of these embodiments, such as Figure 3 and Figure 4 As shown, the actuating unit includes a first push block 61 and a second push block 62 arranged at intervals. The first push block 61 and the second push block 62 are used to push the filter unit 30 to swing in opposite directions, respectively.

[0059] Specifically, the first push block 61 and the second push block 62 can be made of rigid metal blocks or engineering plastics. When the first push block 61 and the second push block 62 are used to directly push the filter unit 30, the distance between them is greater than the width of the filter unit 30, and the height of the first push block 61 and the second push block 62 is greater than the vertical displacement of the filter unit 30 when it swings, so that the first push block 61 and the second push block 62 can always push the filter unit 30.

[0060] In specific implementation, the first pusher 61 can be fixed on the left side of the filter unit 30 being pushed, and the second pusher 62 can be fixed on the right side of the filter unit 30 being pushed. As a preferred embodiment, the contact surfaces of the first pusher 61 and the second pusher 62 with the filter unit 30 can be provided with rollers or anti-friction coatings to reduce frictional loss during the pushing process. Driven by the drive mechanism 10, the pusher 60 performs a linear reciprocating motion, causing the first pusher 61 and the second pusher 62 to alternately contact the sidewall of the filter unit 30, forming a periodic bidirectional force application.

[0061] Preferably, such as Figure 2 and Figure 3 As shown, the driving mechanism 10 is a crank-slider mechanism.

[0062] Specifically, the crank-slider mechanism consists of a crank, a connecting rod, and a slider. The crank drives the connecting rod through rotational motion, and the connecting rod converts the rotational motion into the linear reciprocating motion of the slider. In a preferred embodiment, the crank can adopt an eccentric wheel structure, with both ends of the connecting rod hinged to the crank and the slider, respectively. The slider is fixedly connected to the pusher 60, so that the rotational motion of the motor is converted into the linear reciprocating motion of the pusher 60 through the crank-slider mechanism.

[0063] Specifically, the slider of the crank-slider mechanism can be guided by linear bearings or guide rails, with guide rails offering higher motion accuracy. Furthermore, the crank-slider mechanism can also be equipped with a position sensor to monitor the slider's position.

[0064] The crank-slider mechanism has a simple and reliable structure and high motion transmission efficiency. It can ensure that the pusher 60 drives the filter module to achieve regular reciprocating oscillation. By precisely controlling the crank speed and slider stroke, the oscillation frequency and amplitude of the filter module can be optimized, thereby improving the impurity removal effect.

[0065] In other embodiments, the drive mechanism 10 may also be an electric push rod, a hydraulic push rod, or a cylinder.

[0066] In some of these embodiments, such as Figure 5 and Figure 6As shown, the liquid extraction assembly 20 includes a collection pipe section 21 and a plurality of liquid extraction branch pipes 22 connected to the collection pipe section 21. The plurality of liquid extraction branch pipes 22 are arranged parallel to each other along the width direction of the filter chamber. The liquid extraction branch pipes 22 are provided with a plurality of liquid extraction holes arranged axially and radially along the liquid extraction branch pipes 22.

[0067] Specifically, the manifold section 21 can be made of stainless steel or engineering plastic, and its inner diameter range can be specifically designed as needed. It is used to centrally collect the liquid transported by each branch pipe. The liquid extraction branch pipes 22 are arranged in parallel and are detachably connected to the manifold section 21 through flanges or quick couplings.

[0068] By establishing a three-dimensional liquid extraction network, the parallel layout of multiple branches eliminates the width-direction velocity gradient present in traditional single-tube liquid extraction. The axially and radially distributed extraction holes form a three-dimensional negative pressure field, effectively solving the problem of low liquid extraction efficiency in the corner areas of the filtration chamber, which is conducive to improving filtration efficiency.

[0069] Furthermore, in some embodiments, the plurality of the liquid extraction branches 22 are divided into central branches and side branches, the distribution density of the liquid extraction holes on the central branches is less than the distribution density of the liquid extraction holes on the side branches, the filter chamber is divided into a central region and a side region, the side regions are located on both sides of the central region, the central branches are located in the central region, and the side branches are located in the side regions.

[0070] Specifically, the zoning design of the pumping branch pipe 22 can be achieved in the following ways: the central branch pipe and the side branch pipes use pipes of the same diameter, and the difference in the distribution density of the pumping holes can be achieved by adjusting the hole spacing, for example, the hole spacing of the central branch pipe is 1.5-2 times that of the side branch pipes. As a preferred embodiment, the width of the side area can be set to 1 / 3-1 / 2 of the central area to ensure reasonable flow distribution. The diameter of the pumping holes can be kept consistent, and the pumping volume can be adjusted only by the number of holes, or a gradual hole diameter design can be used in conjunction with the distribution density adjustment.

[0071] By differentiating the parameters of the liquid extraction structure, the fluid dynamics characteristics within the filtration chamber are optimized. In the central region, where the flow velocity is higher due to fluid inertia, reducing the density of extraction holes avoids localized over-extraction; conversely, in the side regions where the flow velocity is lower, increasing the density of extraction holes compensates for the reduced extraction efficiency. This collaborative design ensures balanced liquid flow during filtration, effectively solving the problem of decreased filtration efficiency caused by uneven extraction in traditional devices. It achieves improved filtration stability through spatial parameter optimization without increasing energy consumption.

[0072] In one embodiment, the filter unit 30 includes a filter frame 33 and at least two filter plates 34. The filter frame 33 has filter positions corresponding to the number of filter plates 34. The filter plates 34 are installed in the corresponding filter positions to form the filter chamber with the filter frame 33.

[0073] Specifically, the filter frame 33 can be made of metal or engineering plastic, and the filter plate 34 can be fixed to the filter frame position by snap-fit, or the filter frame position can be designed as a slot type or bolt fixing type, for example, an insertion groove with a sealing ring is provided on the inner side of the frame, and the edge of the filter plate 34 is embedded by interference fit. As a preferred embodiment, the filter plate 34 is provided with a microporous structure with filtration function, for example, the filter plate 34 can be a microporous foam ceramic filter plate. In this embodiment, such as Figure 5 and Figure 6 As shown, the filter frame 33 has two filter frames and two filter plates 34, which are arranged in parallel and spaced apart. The two sides of the filter frame 33 adjacent to the filter plates 34 are enclosed metal or plastic plates to form the filter chamber. In other embodiments, four filter frames and four filter plates 34 may be provided.

[0074] The filter frame 33, acting as a rigid support, ensures the parallel positioning of multiple filter plates 34 through a precisely machined frame structure, preventing deformation. The closed chamber formed by the filter plates 34 and the filter frame 33 ensures that the liquid must pass through the filter medium to complete the filtration process, eliminating dead zones in the filtration process.

[0075] In one embodiment, the filter unit 30 includes a filter frame 33 and a filter plate 34 mounted on the filter frame 33. The filter plate 34 has an insertion hole for inserting the liquid extraction assembly 20, and the insertion hole constitutes the filter chamber.

[0076] Specifically, the insertion hole can adopt a blind hole structure, and the hole diameter is clearance-fitted with the outer diameter of the liquid extraction branch pipe 22 of the liquid extraction assembly 20. The filter frame 33 serves as a support structure to fix the filter plate 34. The liquid extraction assembly 20 can be directly inserted into the insertion hole to complete the assembly without the need for additional pipe connections. This also saves the volume of the filter unit 30 and reduces the amount of filter plate 34 used, which helps to reduce filtration costs.

[0077] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A filter device, characterized in that Includes a frame, a drive mechanism mounted on the frame, and multiple filter modules; The filtration module includes a liquid extraction component and a filtration unit. The filtration unit has a filtration chamber, and the liquid extraction component is used to extract the filtered liquid from the filtration chamber. The frame is provided with a support rod, and the filter module is rotatably mounted on the frame via the support rod; The drive mechanism is used to drive the filter module to swing back and forth so that impurities are removed from the surface of the filter unit.

2. The filtration device according to claim 1, characterized in that, The filter module also includes a linkage rod. There are multiple filter units arranged in parallel and spaced apart. All filter units are rotatably connected to the linkage rod. The drive mechanism drives the filter units or the linkage rod to make the filter module swing back and forth.

3. The filtration device according to claim 2, characterized in that, The filter unit also includes a support shaft and a swing shaft arranged at intervals. The support rod is provided with a plurality of support holes arranged at intervals. The support shaft is rotatably disposed in the support holes. The linkage rod is provided with a plurality of linkage holes arranged at intervals. The swing shaft is rotatably disposed in the linkage holes.

4. The filtration device according to claim 2, characterized in that, It also includes a pusher, the drive mechanism outputs linear reciprocating motion to drive the pusher to reciprocate linearly, the pusher has a toggle unit corresponding to each of the plurality of filter modules, the toggle unit is used to push the linkage rod or at least one of the filter modules to swing back and forth.

5. The filtration device according to claim 4, characterized in that, The actuating unit includes a first push block and a second push block arranged at intervals, the first push block and the second push block being used to push the filter unit to swing in opposite directions respectively.

6. The filtration device according to claim 4, characterized in that, The driving mechanism is a crank-slider mechanism.

7. The filtration device according to claim 1, characterized in that, The liquid extraction assembly includes a collection pipe section and multiple liquid extraction branch pipes connected to the collection pipe section. The multiple liquid extraction branch pipes are arranged parallel to each other along the width direction of the filter chamber. The liquid extraction branch pipes are provided with multiple liquid extraction holes arranged axially and radially along the liquid extraction branch pipes.

8. The filtration device according to claim 7, characterized in that, The multiple liquid extraction branches are divided into central branches and side branches. The distribution density of the liquid extraction holes on the central branches is less than that on the side branches. The filtration chamber is divided into a central region and a side region. The side regions are located on both sides of the central region. The central branches are located in the central region, and the side branches are located in the side regions.

9. The filtration device according to claim 1, characterized in that, The filter unit includes a filter frame and at least two filter plates. The filter frame has filter slots corresponding to the number of filter plates. The filter plates are installed in the corresponding filter slots to form the filter chamber with the filter frame.

10. The filtration device according to claim 1, characterized in that, The filtration unit includes a filter frame and a filter plate installed in the filter frame. The filter plate has a hole for inserting a liquid extraction component, and the hole constitutes the filtration chamber.

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