Multi-stage adjustable fiber bundle filter

Abstract

The invention discloses a multistage adjustable fiber bundle filter which comprises a filter tank body, the filter tank body comprises a straight cylinder section, an upper seal head is arranged at a top opening of the straight cylinder section, a lower seal head is arranged at a bottom opening of the straight cylinder section, and N fiber filter material layers which are sequentially distributed from top to bottom are arranged in the straight cylinder section, each fiber filter material layer comprises a movable filter pore plate, a fiber filter material and a fixed filter pore plate which are sequentially distributed from top to bottom, the periphery of the fixed filter pore plate is fixed on the inner wall of the straight cylinder section, and the upper sealing head is provided with a driving device for driving the movable filter pore plate to move up and down. The filter can achieve ideal filtering precision, and can meet the use scenes with poor inlet water quality and high filtering precision requirements.

Description

Technical Field

[0001] The invention belongs to the field of water treatment and relates to a multi-stage adjustable fiber bundle filter. Background Art

[0002] As an effective pollutant removal process, filtration is widely used in various water treatment projects. Compared with traditional granular filter media, fiber filter media has the advantages of high adsorption, high specific surface area, high porosity, and a nearly ideal filtration method along the filter layer. It has been widely used in various fields of life. Existing high-efficiency fiber filters usually achieve single-stage filtration in a filter tank. The head loss generated when water passes through the movable orifice plate is used to compress the movable orifice plate, that is, the fiber filter media, to form a filter layer. This structure cannot produce a large head loss above the movable orifice plate when the inlet flow rate is small, and thus cannot compress the fiber filter media, resulting in the filter layer not being formed tightly enough and failing to achieve the ideal filtration accuracy. Moreover, since only single-stage filtration can be achieved in a filter, it cannot meet the use scenarios where the inlet water quality is poor and the filtration accuracy requirements are relatively high. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a multi-stage adjustable fiber bundle filter, which can achieve ideal filtration accuracy and meet the use scenarios with poor influent water quality and high requirements for filtration accuracy.

[0004] To achieve the above-mentioned purpose, the present invention discloses a multi-stage adjustable fiber bundle filter, including a filter tank body, the filter tank body including a straight section, an upper head is provided at the top opening of the straight section, and a lower head is provided at the bottom opening of the straight section, and N layers of fiber filter material layers are provided in the straight section, which are distributed from top to bottom, wherein each fiber filter material layer includes a movable filter plate, fiber filter material and a fixed filter plate, which are distributed from top to bottom, wherein the outer periphery of the fixed filter plate is fixed on the inner wall of the straight section, and the upper head is provided with a driving device for driving the movable filter plate to move up and down.

[0005] The further improvement of the multi-stage adjustable fiber bundle filter of the present invention is:

[0006] Furthermore, the driving device includes a speed reducer, a spiral drive shaft and a driving motor. A mounting seat is provided on the top of the upper head, and the driving motor is arranged on the mounting seat. The output shaft of the driving motor is connected to one side of the spiral drive shaft via the speed reducer, and the other end of the spiral drive shaft passes through the upper N-1 layer of fiber filter material layer and is movably connected to the movable filter plate in the last layer of fiber filter material layer.

[0007] The movable filtering hole plates are all provided with oblique supports, the oblique supports are provided with sliders, the spiral drive shaft passes through the sliders, and the spiral drive shaft is threadedly connected with the sliders.

[0008] Furthermore, the end of the fiber filter material is fixed between the movable filter plate and the fixed filter plate through a fixing clamp.

[0009] Furthermore, the driving motor is equipped with a servo motor encoder.

[0010] Furthermore, the spiral transmission shaft is connected to the movable filter hole plate in the upper N-1 layer of fiber filter material layer through a joint bearing.

[0011] Furthermore, a sealing device is provided between the spiral transmission shaft and the upper head;

[0012] A sealing rubber ring is arranged at the contact point between the movable filtering hole plate and the straight cylinder section.

[0013] Furthermore, a backwash air distribution device is arranged at the bottom of the filter tank body and fixed at the middle position of the lower head. The backwash air distribution device includes an air intake main pipe and a plurality of radial air distribution straight pipes connected to the air intake main pipe. The air distribution main pipe is connected to a backwash air intake pipe after passing through the lower head.

[0014] Furthermore, it also includes a limit buffer component and a fiber bundle protection component;

[0015] The limit buffer assembly is arranged at the upper and lower parts of the filter tank body, and is used to buffer and limit the movable filter plate during water inlet or backwashing;

[0016] The fiber bundle protection component is arranged on the inner wall of the straight cylinder section between the uppermost fiber filter material layer and the upper sealing head.

[0017] Furthermore, an intermediate backwash drain pipe is provided between two adjacent fiber filter material layers, and the intermediate backwash drain pipe is connected to the backwash drain port on the filter tank body.

[0018] The present invention discloses a multi-stage adjustable fiber bundle filter, comprising a filter tank body, the filter tank body comprising a straight section, an upper end cap is arranged at the top opening of the straight section, a lower end cap is arranged at the bottom opening of the straight section, N layers of fiber filter material layers are arranged in sequence from top to bottom in the straight section, wherein each fiber filter material layer comprises a movable filter plate, fiber filter material and a fixed filter plate which are arranged in sequence from top to bottom, wherein the outer periphery of the fixed filter plate is fixed on the inner wall of the straight section, and the upper end cap is provided with a driving device for driving the movable filter plate to move up and down;

[0019] The driving device includes a speed reducer, a spiral drive shaft and a driving motor. A mounting seat is provided on the top of the upper head, and the driving motor is arranged on the mounting seat. The output shaft of the driving motor is connected to one side of the spiral drive shaft through the speed reducer, and the other end of the spiral drive shaft passes through the upper N-1 layer of fiber filter material layer and is movably connected to the movable filter plate in the last layer of fiber filter material layer.

[0020] The movable filter hole plates are all provided with oblique supports, the oblique supports are provided with sliders, the spiral drive shaft passes through the sliders, and the spiral drive shaft is threadedly connected with the sliders;

[0021] During operation, the driving motor is controlled to work, and the driving motor drives the spiral driving shaft to rotate through the reducer. The spiral driving shaft drives the movable filter plate to move up and down through the slider, so as to realize the synchronous compression of the fiber filter materials in each fiber filter material layer.

[0022] The present invention has the following beneficial effects:

[0023] During specific operation, the multi-stage adjustable fiber bundle filter described in the present invention controls the driving motor to work, and the driving motor drives the spiral driving shaft to rotate through the reducer. The spiral driving shaft drives the movable filter hole plate to move up and down through the slider, thereby realizing the synchronous compression of the fiber filter material in each fiber filter material layer. The fiber filter material in each layer of fiber filter material presents a form of gradually increasing filtration accuracy from top to bottom inside the tank body, which is conducive to forming an "ideal filter layer" inside the filter, and can meet the use scenarios with poor influent water quality and high requirements for filtration accuracy.

[0024] Furthermore, filtered water is injected through the water inlet at the upper end of the tank body, and the driving device drives the movable filter hole plate to press down. During filtering, the movable filter hole plate moves downward or upward. When pressed, the edge of the movable filter hole plate fits and seals with the inner wall of the barrel body to form a filter layer. The filtering accuracy of the filtering device is increased and the flow rate of filtered water is reduced. Similarly, when relaxed, the flow rate of filtered water is increased, thereby realizing the control and adjustment of the filtered water processing speed and filtering accuracy. The filtered water passes through the fiber filter material layer in turn to achieve multi-stage filtration, which improves the filtering accuracy, and the filtered clean water is discharged from the water inlet at the bottom of the barrel body.

[0025] Furthermore, during backwashing, backwash water is injected through the water inlet at the bottom of the barrel body. At the same time, backwash air is evenly filled into the backwash water inside the barrel body through the backwash device. The backwash air and backwash water are simultaneously filled into the barrel body at high speed, so that the flow rate and disturbance of the backwash water inside the barrel body are greater, and the cleaning force on the fiber filter material layer is stronger. The backwash air is used to stir the backwash water and the filter device to increase the backwash intensity. The drive device drives the clamping mechanism to reciprocate up and down, which plays the role of rinsing the fiber filter material layer, making the cleaning of the fiber filter material layer more effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural diagram of the present invention;

[0028] Figure 2 It is a cross-sectional view of the present invention.

[0029] Among them, 1 is the straight cylinder section, 2 is the upper head, 3 is the lower head, 4 is the support leg, 5 is the driving motor, 6 is the spiral transmission shaft, 7 is the reducer, 8 is the mounting seat, 9 is the movable filter hole plate, 10 is the fixed filter hole plate, 11 is the fiber filter material, 12 is the connecting shaft, 13 is the inclined support, 14 is the fiber bundle protection component, 15 is the limit buffer component, and 16 is the backwash air distribution device. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0033] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0034] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0035] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0038] As is known, the fiber bundle filter uses a new type of bundled soft filler - fiber as the filter element, and the filter material diameter can reach tens of microns or even several microns. When the equipment is running, water passes through the filter layer from top to bottom, and the movable leak plate (or movable orifice plate adjustment device) moves up and down along with the pressure difference signal output by the control system. When the pressure difference approaches or reaches the set value, the adjustment device compresses the bundled fiber downward, the density of the bundled fiber gradually increases along the direction of the water flow, and the pores of the bundled fiber gradually decrease along the direction of the water flow, thereby achieving deep filtration. When the filter material is blocked, the head pressure increases, and at this time, air and water can be mixed for backwashing. The adjustment device automatically straightens the bundled fiber and puts it in a relaxed state, and the dirt adhering to the bundled fiber is discharged with the backwashing gas and water flow, and the cycle continues. The fiber bundle filter is usually composed of a shell, a filter element (fiber bundle), an active porous plate (or an active leak plate), an air distribution device, a pipe system, a water distribution and water collection device and other components. Among them, the filter element is the core component of the filter, and its performance directly affects the filtering effect and service life of the filter.

[0039] Embodiment 1

[0040] refer to Figure 1 and Figure 2 The multi-stage adjustable fiber bundle filter of the present invention comprises a filter tank body, the filter tank body comprises a straight section 1, an upper head 2 is arranged at the top opening of the straight section 1, a lower head 3 is arranged at the bottom opening of the straight section 1, N layers of fiber filter material layers are arranged in sequence from top to bottom in the straight section 1, wherein each fiber filter material layer comprises a movable filter plate 9, a fiber filter material 11 and a fixed filter plate 10 which are arranged in sequence from top to bottom, wherein the outer periphery of the fixed filter plate 10 is fixed on the inner wall of the straight section 1, and the upper head 2 is provided with a driving device for driving the movable filter plate 9 to move up and down;

[0041] The driving device includes a reducer 7, a spiral drive shaft 12 and a drive motor 5. A mounting seat 8 is provided on the top of the upper head 2. The drive motor 5 is arranged on the mounting seat 8. The output shaft of the drive motor 5 is connected to one side of the spiral drive shaft 12 via the reducer 7. The other end of the spiral drive shaft 12 passes through the upper N-1 layer of fiber filter material layer and is movably connected to the movable filter plate 9 in the last layer of fiber filter material layer.

[0042] The movable filter plate 9 is provided with an inclined support 13, and a slider is provided on the inclined support 13. The spiral drive shaft 12 passes through the slider, and the spiral drive shaft 12 is threadedly connected to the slider.

[0043] During operation, the driving motor 5 is controlled to work, and the driving motor 5 drives the spiral driving shaft 12 to rotate through the reducer 7. The spiral driving shaft 12 drives the movable filter plate to move up and down through the slider, thereby realizing the synchronous compression of the fiber filter material 9 in each fiber filter material layer.

[0044] Embodiment 2

[0045] refer to Figure 1 and Figure 2 The multi-stage adjustable fiber bundle filter of the present invention comprises a straight section 1, an upper head 2, a lower head 3, a leg 4, a drive motor 5, a spiral transmission shaft 6, a reducer 7, a mounting seat 8, a movable filter plate 9, a fixed filter plate 10, a fiber filter material 11, a spiral drive shaft 12, an inclined support 13, a fiber bundle protection component 14, a limit buffer component 15 and a backwashing air distribution device 16;

[0046] The filter tank body includes a straight section 1, an upper head 2 is arranged at the top opening of the straight section 1, a lower head 3 is arranged at the bottom opening of the straight section 1, and a support leg 4 is arranged at the bottom of the lower head 3, and a plurality of fiber filter material layers are arranged in sequence from top to bottom in the straight section 1, wherein each fiber filter material layer includes a movable filter plate 9, a fiber filter material 11 and a fixed filter plate 10 which are arranged in sequence from top to bottom, wherein the outer periphery of the fixed filter plate 10 is fixed on the inner wall of the straight section 1;

[0047] A mounting seat 8 is provided at the top of the upper head 2, and a driving motor 5 is provided on the mounting seat 8. The output shaft of the driving motor 5 is connected to one side of the spiral driving shaft 12 via a reducer 7. The other end of the spiral driving shaft 12 passes through the upper N-1 layer of fiber filter material layer and is movably connected to the movable filter plate 9 in the last layer of fiber filter material layer.

[0048] As an embodiment of the present invention, the movable filter hole plate 9 in each layer of fiber filter material is provided with an inclined support 13, and a slider is provided on the inclined support 13. The spiral drive shaft 12 passes through the slider, and the spiral drive shaft 12 is threadedly connected to the slider. When working, the drive motor 5 is controlled to work, and the drive motor 5 drives the spiral drive shaft 12 to rotate through the reducer 7. The spiral drive shaft 12 drives the movable filter hole plate to move up and down through the slider, thereby realizing the synchronous compression of the fiber filter material 9 in each fiber filter material layer.

[0049] As an embodiment of the present invention, the movable filter hole plate 9 and the fixed filter hole plate 10 are evenly opened with holes for filtering water and fixing fiber filter material, and the opening ratio is 10%-20%. The fiber filter material is connected between the movable filter hole plate 9 and the fixed filter hole plate 10, and the end of the fiber filter material is fixed between the movable filter hole plate 9 and the fixed filter hole plate 10 by a fixing clamp.

[0050] As an implementation mode of the present invention, the reducer 7 is fixedly connected to the mounting seat 8 via a flange.

[0051] As an embodiment of the present invention, the driving motor 5 is equipped with a servo motor encoder, which can realize real-time monitoring and transmission of the rotation speed and torque, thereby achieving precise driving.

[0052] As an embodiment of the present invention, the spiral transmission shaft 6 is connected to the movable filter plate 9 in the upper N-1 layer of fiber filter material through a joint bearing, and the spiral transmission shaft 6 is configured with a single-line straight thread with a pitch of 50-100mm.

[0053] As an embodiment of the present invention, a sealing device is provided between the spiral transmission shaft 6 and the upper head 2 .

[0054] As an embodiment of the present invention, a sealing rubber ring is provided at the contact point between the movable filter plate 9 and the straight cylinder section 1 .

[0055] As an embodiment of the present invention, a backwash air distribution device 16 is arranged at the bottom of the filter tank body and fixed at the middle position of the lower head 3. The backwash air distribution device 16 includes an air intake main pipe and a plurality of radial air distribution straight pipes connected to the air intake main pipe. Each air distribution branch pipe is provided with no less than 2 rows of air distribution holes. The air distribution main pipe passes through the lower head 3 and is connected to the backwash air intake pipe.

[0056] As an implementation mode of the present invention, this embodiment also includes a limit buffer component 15 and a fiber bundle protection component 14.

[0057] The position limiting buffer assembly 15 is arranged at the upper part and the lower part of the filter tank body, and the position limiting buffer assembly 15 is used to buffer and limit the movable filter plate 9 during water intake or backwashing.

[0058] As an embodiment of the present invention, the fiber bundle protection component 14 is arranged on the inner wall of the straight cylinder section 1 between the uppermost fiber filter material layer and the upper head 2, and is used to prevent the fiber filter material from winding around the spiral transmission shaft 6 when the movable filter plate 9 moves up and down.

[0059] As an embodiment of the present invention, an intermediate backwash drain pipe is provided between two adjacent fiber filter material layers, and the intermediate backwash drain pipe is connected to the backwash drain port on the filter tank body.

[0060] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0061] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A multi-stage adjustable fiber bundle filter, characterized in that: The invention comprises a filter tank body, wherein the filter tank body comprises a straight section (1), an upper head (2) is arranged at the top opening of the straight section (1), and a lower head (3) is arranged at the bottom opening of the straight section (1), wherein N layers of fiber filter material layers are arranged in sequence from top to bottom, wherein each fiber filter material layer comprises a movable filter plate (9), fiber filter material (11) and a fixed filter plate (10) which are arranged in sequence from top to bottom, wherein the outer periphery of the fixed filter plate (10) is fixed on the inner wall of the straight section (1), and the upper head (2) is provided with a driving device for driving the movable filter plate (9) to move up and down.

2. The multi-stage adjustable fiber bundle filter according to claim 1, characterized in that: The driving device comprises a speed reducer (7), a spiral drive shaft (12) and a driving motor (5); a mounting seat (8) is provided on the top of the upper head (2); the driving motor (5) is arranged on the mounting seat (8); the output shaft of the driving motor (5) is connected to one side of the spiral drive shaft (12) via the speed reducer (7); the other end of the spiral drive shaft (12) passes through the upper N-1 layer of fiber filter material layer and is movably connected to the movable filter plate (9) in the last layer of fiber filter material layer; The movable filter plate (9) is provided with an inclined support (13), the inclined support (13) is provided with a slider, the spiral drive shaft (12) passes through the slider, and the spiral drive shaft (12) is threadedly connected to the slider.

3. The multi-stage adjustable fiber bundle filter according to claim 1, characterized in that: The end of the fiber filter material is fixed between the movable filter hole plate (9) and the fixed filter hole plate (10) through a fixing clamp.

4. The multi-stage adjustable fiber bundle filter according to claim 2, characterized in that: The driving motor (5) is equipped with a servo motor encoder.

5. The multi-stage adjustable fiber bundle filter according to claim 2, characterized in that: The spiral transmission shaft (6) is connected to the movable filter hole plate (9) in the upper N-1 layer of fiber filter material layer via a joint bearing.

6. The multi-stage adjustable fiber bundle filter according to claim 2, characterized in that: A sealing device is provided between the spiral transmission shaft (6) and the upper sealing head (2); A sealing rubber ring is provided at the contact point between the movable filtering hole plate (9) and the straight tube section (1).

7. The multi-stage adjustable fiber bundle filter according to claim 1, characterized in that: A backwash air distribution device (16) is arranged at the bottom of the filter tank body and fixed at the middle position of the lower head (3). The backwash air distribution device (16) comprises an air intake main pipe and a plurality of radial air distribution straight pipes connected to the air intake main pipe. The air distribution main pipe is connected to a backwash air intake pipe after passing through the lower head (3).

8. The multi-stage adjustable fiber bundle filter according to claim 2, characterized in that: It also includes a position limiting buffer component (15) and a fiber bundle protection component (14); The position limiting buffer assembly (15) is arranged at the upper part and the lower part of the filter tank body, and is used to buffer and limit the movable filter plate (9) during water intake or backwashing; The fiber bundle protection component (14) is arranged on the inner wall of the straight cylinder section (1) between the uppermost fiber filter material layer and the upper sealing head (2).

9. The multi-stage adjustable fiber bundle filter according to claim 1, characterized in that: An intermediate backwash drain pipe is arranged between two adjacent fiber filter material layers, and the intermediate backwash drain pipe is connected to the backwash drain port on the filter tank body.

10. A multi-stage adjustable fiber bundle filter, characterized in that: The filter tank body comprises a straight section (1), an upper end cap (2) is arranged at the top opening of the straight section (1), and a lower end cap (3) is arranged at the bottom opening of the straight section (1), wherein N layers of fiber filter material layers are arranged in sequence from top to bottom in the straight section (1), wherein each fiber filter material layer comprises a movable filter plate (9), fiber filter material (11) and a fixed filter plate (10) which are arranged in sequence from top to bottom, wherein the outer periphery of the fixed filter plate (10) is fixed on the inner wall of the straight section (1), and the upper end cap (2) is provided with a driving device for driving the movable filter plate (9) to move up and down; The driving device comprises a speed reducer (7), a spiral drive shaft (12) and a driving motor (5); a mounting seat (8) is provided on the top of the upper head (2); the driving motor (5) is arranged on the mounting seat (8); the output shaft of the driving motor (5) is connected to one side of the spiral drive shaft (12) via the speed reducer (7); the other end of the spiral drive shaft (12) passes through the upper N-1 layer of fiber filter material layer and is movably connected to the movable filter plate (9) in the last layer of fiber filter material layer; The movable filter plate (9) is provided with an inclined support (13), the inclined support (13) is provided with a slider, the spiral drive shaft (12) passes through the slider, and the spiral drive shaft (12) is threadedly connected to the slider; During operation, the drive motor (5) is controlled to operate, the drive motor (5) drives the spiral drive shaft (12) to rotate via the reducer (7), and the spiral drive shaft (12) drives the movable filter plate to move up and down via the slider, thereby achieving synchronous compression of the fiber filter materials (9) in each fiber filter material layer.

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