Fiber filter

Abstract

The invention relates to the field of filtration, and discloses a fiber filter which comprises a frame body, the frame body comprises a first grating plate and a pore plate which are sequentially arranged downwards from an opening of the first grating plate, a water inlet pipe is installed on one side of the frame body, and a water drainage pipe is arranged on the side wall, located below the pore plate, of the frame body; the filtering unit comprises a fiber bundle, a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are arranged at the two ends of the fiber bundle respectively, the fiber bundle is movably installed on the first grating plate and the pore plate through the second connecting piece and the first connecting piece respectively, and an expanding and supporting structure is arranged on the inner side of the fiber bundle and used for diffusing the fiber bundle outwards from the center; the device has the beneficial effects that through the arrangement of the expanding structure, when the power unit drives the first grating plate to move downwards, fiber bundles can be diffused to the periphery through the expanding structure, the situation that the fiber bundles are dispersed to one side is prevented, and it is ensured that the purpose of filtering a water source can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filtration, in particular to a fiber filter tank. BACKGROUND

[0002] The existing fiber filter tank is provided with a second grid plate and a movable hole plate in the filter tank body, and a fiber bundle of polypropylene fiber filaments is arranged between the second grid plate and the movable hole plate. The distance between the movable hole plate and the second grid plate is adjusted by the gravity of water or the floating force of air during backwashing, so as to adjust the compaction and looseness of the fiber bundle, and obtain the required water quality. When filtering, the fiber bundle is more compact, and the water quality is better. When cleaning the fiber bundle, the fiber bundle is in a loose state, and the impurities adsorbed in the fiber bundle are removed by air and water scrubbing. Therefore, the greater the looseness of the fiber bundle, the better the backwashing effect.

[0003] However, the existing fiber filter tank has the following defects: when the movable plate moves downward, the fiber bundle will be scattered to one side or irregularly due to its own gravity, which may cause some positions to fail to achieve the filtering purpose. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is that when the movable plate moves downward, the fiber bundle will be scattered to one side or irregularly due to its own gravity, which may cause some positions to fail to achieve the filtering purpose.

[0005] The above technical problem is solved by the following technical scheme: the present application provides a fiber filter tank, which comprises a frame body, the frame body comprises a first grid plate, a hole plate arranged in sequence from the opening of the first grid plate downward, a water inlet pipe is installed on one side of the frame body, and a drain pipe is arranged on the side wall below the hole plate of the frame body; a filtering unit, the filtering unit comprises a fiber bundle and first and second connecting members arranged at both ends of the fiber bundle, respectively, the fiber bundle is movably installed on the first grid plate and the hole plate through the second connecting member and the first connecting member, respectively, and a spreading structure is arranged on the inner side of the fiber bundle for spreading the fiber bundle outward from the center; and a power unit, the power unit is installed on the top of the frame body and used for controlling the lifting of the first grid plate.

[0006] In a preferred embodiment of the fiber filter tank of the present application: the hole plate is fixed at the lower position in the frame body, the first grid plate is movably arranged in the interior of the frame body, and a backwashing member is installed in the space between the hole plate and the bottom of the frame body.

[0007] In a preferred embodiment of the fiber filter tank of the present application: the backwashing member comprises two horizontally arranged air distribution pipes and water distribution pipes, the air distribution pipes and the water distribution pipes are respectively connected with uniformly arranged first branch pipes and second branch pipes on one side, and nozzles are arranged on the upper sides of the first branch pipes and the second branch pipes.

[0008] In a preferred embodiment of the fiber filter tank of the present invention, a second grid plate is installed above the perforated plate, and the holes on the second grid plate are capable of allowing the first connecting member to pass through.

[0009] In a preferred embodiment of the fiber filter tank described in the present invention: the expansion structure includes a first support member arranged between the first connecting member and the second connecting member, at least one second support member is arranged laterally along the first support member, the second support member is connected to multiple first support members, and the first support member and the second support member are both located on the inner side of the fiber bundle.

[0010] In a preferred embodiment of the fiber filter of the present invention: the expansion structure includes a plurality of elastic sheets circumferentially distributed on the top of the first connecting member, the outer ring of the elastic sheet is movablely sleeved with a movable ring, and the movable ring is fixedly connected to one end of the fiber bundle.

[0011] In a preferred embodiment of the fiber filter tank of the present invention, a connecting plate is hinged on the top of the elastic sheet, and one end of each of the connecting plates is hinged to the outer ring of the column.

[0012] In a preferred embodiment of the fiber filter tank described in the present invention: the power unit includes a mounting platform fixed to the outside of the top of the frame, two mounting boxes symmetrically fixed to the top of the frame, and a connecting rod arranged between the two mounting boxes. A servo motor is installed on the top of the mounting platform, and the output end of the servo motor is located in the mounting box and is fixedly connected to a first bevel gear.

[0013] In a preferred embodiment of the fiber filter tank described in the present invention: the inner bottom of the mounting box is rotatably connected to a cylinder, the top of the cylinder is fixedly connected to a third bevel gear, the inner ring of the cylinder is threadedly engaged with a threaded rod that vertically passes through the mounting box, and the bottom end of the threaded rod is fixed to the top of the first grid plate.

[0014] In a preferred embodiment of the fiber filter tank of the present invention: the parts at both ends of the connecting rod located in the installation box are fixedly connected to the second bevel gear, and the second bevel gear and the first bevel gear are both engaged with the third bevel gear.

[0015] The beneficial effect of the present invention is that: through the setting of the expansion structure, when the power unit drives the first grid plate to move downward, the expansion structure can enable the fiber bundle to diffuse to the surroundings, preventing it from dispersing to one side, thereby ensuring that the purpose of water source filtration can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0017] Figure 1 Shows a schematic cross-sectional structural diagram of a fiber filter;

[0018] Figure 2 A partial cross-sectional structural schematic diagram of a fiber filter is shown;

[0019] Figure 3 Shown Figure 2 A in the middle is an enlarged structural diagram;

[0020] Figure 4 Shows a schematic structural diagram of the backwash unit;

[0021] Figure 5 shows a schematic structural diagram of the power unit;

[0022] Figure 6 Shown Figure 5 The enlarged cross-sectional structural diagram at point B in the middle;

[0023] Figure 7 shows a schematic structural diagram of the filtration unit;

[0024] Figure 8 A first embodiment of the filter unit is shown;

[0025] Figure 9 A second state change diagram of the filter unit is shown;

[0026] Figure 10 A third embodiment of the state change diagram of the filter unit is shown. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0028] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0029] Example 1

[0030] Reference Figures 1 to 10 For the first embodiment of the present application, the embodiment provides a fiber filter tank, which comprises a frame 1, the frame 1 comprises a first grid plate 11, a hole plate 13 arranged in sequence from the opening of the first grid plate 11 downward, a water inlet pipe 14 is installed on one side of the frame 1, and a drain pipe is arranged on the side wall below the hole plate 13, the frame 1 provides conditions for wastewater filtration, wastewater enters through the water inlet pipe 14, and filtered water is discharged through the drain pipe, and the frame 1 is an open-top frame; a filtering unit 2, the filtering unit 2 comprises a fiber bundle 21 and a first connecting piece 22 and a second connecting piece 23 arranged at both ends of the fiber bundle 21 respectively, the fiber bundle 21 is movably installed on the first grid plate 11 and the hole plate 13 through the second connecting piece 23 and the first connecting piece 22 respectively, and a supporting structure M is arranged on the inner side of the fiber bundle 21 for spreading the fiber bundle 21 outward from the center, the filtering unit 2 is movably installed between the first grid plate 11 and the hole plate 13 through the first connecting piece 22 and the second connecting piece 23, and the first grid plate 11 can drive the filtering unit 2 to change state through the arrangement of the first grid plate 11; a power unit 3, the power unit 3 is installed on the top of the frame 1 and is used for controlling the lifting of the first grid plate 11.

[0031] Further, the hole plate 13 is fixed at a lower position in the frame 1, the first grid plate 11 is movably arranged in the frame 1, and the hole plate 13 and the space between the inner bottom of the frame 1 are provided with a backwashing piece 15.

[0032] The hole plate 13 is fixed in the frame 1, which can give a fixed force to the lower part of the filtering unit 2 when the first grid plate 11 moves upward or downward, and the movable arrangement of the first grid plate 11 can move upward or downward under the control of the power unit 3, so as to ensure that the state of the fiber bundle 21 can be changed.

[0033] The first grid plate 11 can be lifted or lowered by the power unit 3, so as to drive the filtering unit 2 to move, so that the fiber bundle 21 can be switched between the two states of compaction and loosening, when the first grid plate 11 is located at the upper limited position in the frame 1, the distance between the first grid plate 11 and the hole plate 13 is far, and the fiber bundle 21 is in a loose state, when the first grid plate 11 is located at the lower limited position in the frame 1, the distance between the first grid plate 11 and the hole plate 13 is close, and the fiber bundle 21 is in a state of outward diffusion, the first grid plate 11 and the hole plate 13 extrude the fiber bundle 21 between them, and the fiber bundle 21 is in a compacted state, and the second connecting piece 23 and the first connecting piece 22 are movably installed on the first grid plate 11 and the hole plate 13, so as to facilitate the replacement of the filtering unit 2, and the movable installation mode is not limited to threaded connection, hook and the like, which is not limited here.

[0034] By setting the expansion structure M, when the first grid plate 11 moves downward and the fiber bundle 21 is free to diffuse, an outward force can be given to the middle or bottom of the fiber bundle 21 starting from the middle of the fiber bundle 21, so that when it diffuses, it can diffuse from the center to the surrounding areas, ensuring the diffusion range of the fiber bundle 21 so that it will not affect the degree of wastewater filtration.

[0035] Specifically, the backwash unit 15 includes two horizontally arranged air distribution pipes 151 and water distribution pipes 152. One side of the air distribution pipe 151 and the water distribution pipe 152 is respectively connected to a first branch pipe 153 and a second branch pipe 154 that are evenly arranged. Nozzles are provided on the upper sides of the first branch pipe 153 and the second branch pipe 154.

[0036] The air distribution pipe 151 is arranged above the water distribution pipe 152. When backwashing is performed, the spray path of the air distribution pipe 151 will not be blocked, and the fiber bundle 21 can be backwashed smoothly. When backwashing is performed, the valves of the water inlet pipe 14 and the drain pipe need to be closed. During the backwashing process, the filtered dirt on the fiber bundle 21 will be brought out and as the water distribution pipe 152 continues to inject water, the water inside the frame 1 continues to rise and overflow from the opening at the top of the frame 1. At this time, the dirt floating on the upper part will flow out with the overflowing water and enter other water tanks for storage, which is convenient for subsequent filtration.

[0037] Specifically, the power unit 3 includes a mounting platform 31 fixed to the outside of the top of the frame 1, two mounting boxes 35 symmetrically fixed to the top of the frame 1, and a connecting rod 33 arranged between the two mounting boxes 35. A servo motor 32 is installed on the top of the mounting platform 31, and the output end of the servo motor 32 is located in the mounting box 35 and is fixedly connected to the first bevel gear 321.

[0038] Furthermore, the inner bottom of the mounting box 35 is rotatably connected to a cylinder 351, the top of the cylinder 351 is fixedly connected to a third bevel gear 352, the inner ring of the cylinder 351 is threadedly engaged with a threaded rod 34 that vertically passes through the mounting box 35, and the bottom end of the threaded rod 34 is fixed to the top of the first grid plate 11.

[0039] Furthermore, the parts of both ends of the connecting rod 33 located in the installation box 35 are fixedly connected to the second bevel gear 331 , and the second bevel gear 331 and the first bevel gear 321 are both engaged with the third bevel gear 352 .

[0040] The setting of the mounting table 31 provides a mounting platform for the servo motor 32, and the setting of the two mounting boxes 35 can also support the connecting rod 33 and the threaded rod 34. The second bevel gear 331 and the first bevel gear 321 are engaged with the third bevel gear 352 to ensure that the two threaded rods 34 can rise or fall synchronously, ensuring the stability of the first grid plate 11 during the movement.

[0041] The servo motor 32 drives the first bevel gear 321 to rotate, and the first bevel gear 321 drives the cylinder 351 to rotate, thereby driving the second bevel gear 331 to rotate. The transmission through the connecting rod 33 can drive the cylinder 351 in the other elastic sheet M2 to rotate through the second bevel gear 331 at the other end. Since the threaded rod 34 is fixed to the top of the first grid plate 11, when the cylinder 351 rotates, it will drive the threaded rod 34 to move upward or downward, completing the movement of the first grid plate 11.

[0042] The inner ring of the cylinder 351 is provided with a thread, which can be threadedly matched with the threaded rod 34. Since the threaded rod 34 is in a non-rotatable state, when the third bevel gear 351 drives the cylinder 352 to rotate, it will drive the threaded rod 34 to move upward or downward.

[0043] When in use, first turn on the power unit 3, and control the first grid plate 11 to move downward through the power unit 3, so that the fiber bundle 21 becomes a compacted state, then open the valves on the water inlet pipe 14 and the drain pipe, and close the valves on the air distribution pipe 151 and the water distribution pipe 152. The wastewater enters the interior of the frame 1 through the water inlet pipe 14 and flows into the bottom of the frame 1 through the filter unit 2. When passing through the fiber bundle 21, the wastewater can be filtered. After filtering for a period of time, when the fiber bundle 21 is contaminated with more dirt, which affects the filtering effect, backwashing is required at this time. First close the filter. The valve of the water inlet pipe 14 is closed, and after the wastewater in the frame 1 is filtered and flows out from the drain pipe, the valve of the drain pipe is closed, and then the fiber bundle 21 is loosened by the power unit 3, and then the valves of the air distribution pipe 151 and the water distribution pipe 152 are opened, and the water distribution pipe 152 injects water into the frame 1, and the air distribution pipe 151 injects air into the frame 1 through the nozzle. As the bubbles rise, the fiber bundle 21 will swing, which speeds up the backwashing efficiency. When the cleaning is completed, the valves of the air distribution pipe 151 and the water distribution pipe 152 are closed, and the valves of the water inlet pipe 14 and the drain pipe are opened to continue working.

[0044] Example 2

[0045] Reference Figures 1 to 3 , which is the second embodiment of the present invention, based on the first embodiment: further comprising a second grid plate 12 installed above the orifice plate 13, and the holes on the second grid plate 12 can allow the first connecting member 22 to pass through

[0046] In this embodiment, a perforated plate 13 is installed above the second grid plate 12. When the first grid plate 11 descends to compact the fiber bundle 21, the perforated plate 13 can prevent the diffused portion of the fiber bundle 21 from entering the perforated plate in the second grid plate 12 under the impact of water flow, thereby preventing damage.

[0047] The setting of the orifice plate 13 provides further support for the fiber bundle 21. The shape and size of the holes on the orifice plate 13 can be set according to actual conditions and are not limited too much here. Due to the support of the orifice plate 13, the direct contact area between the fiber bundle 21 and the second grid plate 12 can be reduced, while also ensuring the filtering effect.

[0048] The rest of the structure is the same as that of Example 1.

[0049] Example 3

[0050] Reference Figure 8 , which is the third embodiment of the present invention, is based on the previous two embodiments, and includes an expansion structure M including a first support member M1 arranged between the first connecting member 22 and the second connecting member 23, at least one second support member M11 is arranged laterally along the first support member M1, the second support member M11 is connected to multiple first support members M1, and the first support member M1 and the second support member M11 are both located on the inner side of the fiber bundle 21.

[0051] The first support member M1 and the second support member M11 are both made of elastic material. The first support member M1 is located at the center of the fiber bundle 21, and there is no fiber bundle 21 inside the multiple first support members M1. This is to ensure that when the first grid plate 11 descends to squeeze the fiber bundle 21, the multiple first support members M1 can expand to the surrounding areas along the center of the fiber bundle 21, and drive the outer fiber bundles 21 to expand, ensuring that the fiber bundles 21 are evenly distributed in the circumferential direction during expansion, and also avoiding the situation where the fiber bundles 21 appear to be distributed to one side or unevenly during expansion.

[0052] There are multiple first support members M1, which can be cylindrical or plate-shaped, etc., which is not specifically limited here. It is ensured that the first support members M1 are evenly distributed between the first connecting member 22 and the second connecting member 23 during installation. At the same time, the second support member M11 is used to connect the first support members M1 of each part, so that a closed circular ring is formed in the transverse direction, ensuring that all parts in the fiber bundle 21 can be pushed.

[0053] Furthermore, the second support member M11 is in a rope shape, which can adapt to the changes of the first support member M1 and can also provide necessary support for the fiber bundle 21 through the expansion of the first support member M1.

[0054] The rest of the structure is the same as that of Example 2.

[0055] Example 4

[0056] Reference Figure 9, which is the fourth embodiment of the present invention, is different from the second embodiment in that: it includes an expansion structure M including a plurality of elastic sheets M2 circumferentially distributed on the top of the first connecting member 22, and the outer ring movable sleeve of the elastic sheet M2 is provided with a movable ring M21, and the movable ring M21 is fixedly connected to one end of the fiber bundle 21.

[0057] Through the setting of the elastic sheet M2, the fiber bundle 21 can also be given a force to expand outward. Multiple elastic sheets M2 are limited by the movable ring M21. When the movable ring M21 moves to the end of the elastic sheet M2 close to the first connecting piece 22, the end of the elastic sheet M2 away from the first connecting piece 22 expands outward according to its own elastic force or its own memory, and opens the fiber bundle 21, ensuring that the fiber bundle 21 diffuses to the surroundings during the compaction process and does not diffuse to one side, thereby ensuring the filtration efficiency.

[0058] The multiple elastic sheets M2 may be fitted together or may have gaps therebetween. At the same time, the multiple elastic sheets M2 also need to be connected by elastic ropes or retractable structures to ensure that all the fiber bundles 21 can be supported.

[0059] If multiple elastic sheets M2 are fitted together, space needs to be left for placing objects such as elastic ropes to ensure that there is no motion interference between the two.

[0060] The rest of the structure is the same as that of Example 2.

[0061] Example 5

[0062] Reference Figure 10 , which is the fifth embodiment of the present invention, is based on the fourth embodiment, and includes a connecting plate M22 hinged on the top of the elastic sheet M2, and one end of each of the connecting plates M22 is hinged to the outer ring of the column base M23.

[0063] By hingedly connecting the connecting plate M22 on the top of the elastic sheet M2, the space above the elastic sheet M2 can be effectively supported to ensure that the fiber bundle 21 does not fall into the inner side of the elastic sheet M2 when the fiber bundle 21 falls, thereby preventing partial damage to the fiber bundle 21 during compaction. The number of connecting plates M22 is adapted to the elastic sheet M2, and when the fiber bundle 21 is in a diffused state, as shown in FIG. Figure 10 As shown in the first figure, the moving ring M21 is located at the top of the elastic sheet M2. At this time, the multiple elastic sheets M2 and the connecting plate M22 are in a contracted state. When the fiber bundle 21 is in a compacted state, as shown in FIG. Figure 10 As shown in the second figure, the movable ring M21 is located at the bottom end of the elastic sheet M2. At this time, the multiple elastic sheets M2 and the connecting plate M22 are all in an open state.

[0064] Elastic ropes or the like are also provided between the multiple movable rings M21 to ensure that after being opened, the gaps between the multiple movable rings M21 can also support the scattered fiber bundles 21 .

[0065] The rest of the structure is the same as that of Example 4.

[0066] In summary, first turn on the servo motor 32, and drive the threaded rod 34 through the servo motor 32 to control the first grid plate 11 to move downward. At this time, the expansion structure M expands the fiber bundle 21 so that it can spread to the surroundings, and the fiber bundle 21 becomes compacted. Then open the valves on the water inlet pipe 14 and the drain pipe, and close the valves on the air distribution pipe 151 and the water distribution pipe 152. The wastewater enters the interior of the frame 1 through the water inlet pipe 14 and flows into the bottom of the frame 1 through the filter unit 2. When passing through the fiber bundle 21, the wastewater can be filtered. After filtering for a period of time, the fiber bundle 21 is contaminated with more dirt, which affects the filtration. When the filter effect is achieved, backwashing is required. First, close the valve of the water inlet pipe 14. After the wastewater in the frame 1 is filtered and flows out from the drain pipe, close the valve of the drain pipe. Then, the fiber bundle 21 is loosened through the power unit 3, and then the valves of the air distribution pipe 151 and the water distribution pipe 152 are opened. The water distribution pipe 152 injects water into the frame 1, and the air distribution pipe 151 injects air into the frame 1 through the nozzle. As the bubbles rise, the fiber bundle 21 will swing, which speeds up the efficiency of backwashing. When the cleaning is completed, close the valves of the air distribution pipe 151 and the water distribution pipe 152, open the valves of the water inlet pipe 14 and the drain pipe, and continue working.

[0067] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A fiber filter, characterized in that: include, A frame (1), the frame (1) comprising a first grid plate (11) and a perforated plate (13) arranged in sequence from an opening downward, a water inlet pipe (14) installed on one side of the frame (1), and a drain pipe provided on a side wall of the frame (1) below the perforated plate (13); A filter unit (2), the filter unit (2) comprising a fiber bundle (21) and a first connecting member (22) and a second connecting member (23) respectively arranged at both ends of the fiber bundle (21); the fiber bundle (21) is movably mounted on a first grid plate (11) and a perforated plate (13) via the second connecting member (23) and the first connecting member (22), respectively; an expansion structure (M) is provided inside the fiber bundle (21) for diffusing the fiber bundle (21) from the center outward; A power unit (3) is installed on the top of the frame (1) and is used to control the lifting and lowering of the first grid plate (11).

2. The fiber filter according to claim 1, characterized in that: The orifice plate (13) is fixed at a lower position inside the frame (1), the first grid plate (11) is movably arranged inside the frame (1), and a backwash component (15) is installed in the space between the orifice plate (13) and the inner bottom of the frame (1).

3. The fiber filter according to claim 2, characterized in that: The backwash unit (15) comprises two horizontally arranged air distribution pipes (151) and water distribution pipes (152). One side of the air distribution pipe (151) and the water distribution pipe (152) is respectively connected to a first branch pipe (153) and a second branch pipe (154) arranged evenly. The upper sides of the first branch pipe (153) and the second branch pipe (154) are both provided with nozzles.

4. The fiber filter according to any one of claims 1 to 3, characterized in that: A second grid plate (12) is installed above the perforated plate (13), and the holes on the second grid plate (12) are capable of allowing the first connecting member (22) to pass through.

5. The fiber filter according to claim 1, characterized in that: The expansion structure (M) includes a first support member (M1) arranged between a first connecting member (22) and a second connecting member (23), at least one second support member (M11) is arranged laterally along the first support member (M1), the second support member (M11) is connected to multiple first support members (M1), and the first support member (M1) and the second support member (M11) are both located on the inner side of the fiber bundle (21).

6. The fiber filter according to claim 1, characterized in that: The expansion structure (M) includes a plurality of elastic sheets (M2) circumferentially distributed on the top of the first connecting member (22), and the outer ring of the elastic sheet (M2) is movably sleeved with a movable ring (M21), and the movable ring (M21) is fixedly connected to one end of the fiber bundle (21).

7. The fiber filter according to claim 6, characterized in that: The top of the elastic sheet (M2) is hinged with a connecting plate (M22), and one end of each of the connecting plates (M22) is hinged to the outer ring of the column base (M23).

8. The fiber filter according to claim 1, characterized in that: The power unit (3) comprises a mounting platform (31) fixed to the outside of the top of the frame (1), two mounting boxes (35) symmetrically fixed to the top of the frame (1), and a connecting rod (33) arranged between the two mounting boxes (35); a servo motor (32) is mounted on the top of the mounting platform (31); and a portion of the output end of the servo motor (32) located in the mounting box (35) is fixedly connected to a first bevel gear (321).

9. The fiber filter according to claim 8, characterized in that: The inner bottom of the installation box (35) is rotatably connected to a cylinder (351), the top of the cylinder (351) is fixedly connected to a third bevel gear (352), the inner ring of the cylinder (351) is threadedly engaged with a threaded rod (34) vertically passing through the installation box (35), and the bottom end of the threaded rod (34) is fixed to the top of the first grid plate (11).

10. The fiber filter according to claim 9, characterized in that: The parts of both ends of the connecting rod (33) located in the installation box (35) are fixedly connected to the second bevel gear (331), and the second bevel gear (331) and the first bevel gear (321) are both meshed with the third bevel gear (352).

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