A mobile sunshade device for preventing algae growth in a V-shaped filter tank

Abstract

The invention relates to a mobile sunshade device for preventing algae growth in a V-shaped filter tank. A sunshade net is arranged directly above the filter tank to block sunlight, so that the filter tank is in a dark state to inhibit the massive reproduction of algae. At the same time, when the sunshade net is opened, a grille extending below the water surface moves accordingly. Under the push of the grille, duckweed and algae gather at one end of the filter tank for easy salvage, so as to further inhibit the massive reproduction of algae.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a mobile sunshade device for preventing algae growth in a V-shaped filter tank. Background Art

[0002] Wastewater treatment: The process of purifying wastewater to ensure that it meets the water quality requirements for discharge into a water body or reuse. Typical wastewater quality generally includes organic matter, nitrogen, phosphorus and suspended solids. V-type filters have good treatment effects in removing suspended solids and phosphorus.

[0003] The V-type filter is a form of rapid filter. It is named because its water inlet is V-shaped. It is also called a uniform particle filter (its filter media is homogeneous filter media, i.e., uniform particle size filter media). The water to be filtered flows from the main water inlet channel through the water inlet valve and square hole, overflows the weir, and then enters the V-shaped groove submerged by the water to be filtered through the side hole. It enters the filter tank through the uniform water distribution holes at the bottom of the groove and the V-shaped groove weir. The filtered water filtered by the homogeneous filter media filter layer flows into the bottom space through the long-handled filter head, and then flows into the air-water distribution pipeline through the square hole, and then flows into the clean water tank through the water seal well, water outlet weir, and clean water channel in the pipeline gallery.

[0004] The above-mentioned prior art solutions have the following defects: sewage is rich in organic matter, nitrogen and phosphorus, which can easily cause algae to multiply in large numbers and attach to the filter tank. The large-scale multiplication of algae blocks the filter material, affecting the filtration rate, and the filter tank needs to be cleaned frequently. In order to inhibit the growth of algae, chlorination is usually adopted, that is, hydrochloric acid, sodium hypochlorite and other drugs are added to the water body, but if the amount of drugs added is too large, it will affect the water quality and have an adverse effect on the subsequent sewage treatment. Summary of the invention

[0005] In view of the shortcomings of the prior art, one of the purposes of the present invention is to provide a mobile sunshade device for preventing algae growth in a V-shaped filter tank. A sunshade net is arranged directly above the filter tank to block the sunlight, so that the filter tank is in a dark state to inhibit the massive reproduction of algae.

[0006] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0007] A V-shaped filter tank to prevent algae growth movable sunshade device, arranged above the filter tank, comprising:

[0008] The sunshade net has one end fixedly connected to the filter tank as a fixed end, and the other end opposite is a movable end and is used to cover the filter tank;

[0009] A sliding member is slidably disposed above the filter tank and is fixedly connected to the moving end of the sunshade net; and

[0010] The driving assembly is used to drive the sliding member to slide back and forth to open or fold the sunshade net.

[0011] By adopting the above technical solution, the sunshade net is opened to block the sunlight, so that the filter tank is in a dark state, so as to inhibit the massive reproduction of algae and avoid the influence of large-scale addition of drugs on subsequent sewage treatment; the sunshade net is folded up to facilitate personnel to observe the working status of the filter tank and the status of the sewage in the filter tank.

[0012] In a preferred example, the present invention can be further configured as follows: the sliding member includes:

[0013] A sliding seat slidably disposed on the upper end of the filter tank; and

[0014] The moving rod is horizontally arranged and fixedly connected to the sliding seat, and the moving rod is vertical to the sliding direction of the sliding seat and extends to the top of the filter tank, and the moving rod is fixedly connected to the moving end of the sunshade net.

[0015] By adopting the above technical solution, the movable rod is connected to the end of the sunshade net to prevent the sunshade net from twisting, and the movable rod extends to just above the filter tank. When the sunshade net is in the open state, it is ensured that the sunshade net covers the filter tank.

[0016] In a preferred example, the present invention can be further configured as follows: the driving component includes:

[0017] A driving rack is horizontally arranged at the upper end of the filter tank and extends in a direction parallel to the sliding direction of the slide seat;

[0018] a driving gear, rotatably connected to the slide seat and used to cooperate with the driving rack; and

[0019] The driving motor is used to drive the driving gear to rotate.

[0020] By adopting the above technical solution, the driving motor rotates in both directions, driving the driving gear to rotate in both directions, so that the driving gear moves back and forth along the driving rack, that is, the reciprocating movement of the slide is realized, and the moving end of the sunshade net is driven away from / closer to the fixed end by the moving rod, thereby realizing the opening / folding of the sunshade net.

[0021] In a preferred example, the present invention can be further configured as follows: the moving rod is rotatably connected to the slide seat, the sunshade net is wound around the outer circumference of the moving rod, the driving motor synchronously drives the moving rod to rotate, and when the moving rod is close to the fixed end of the sunshade net, the moving rod reels the sunshade net.

[0022] By adopting the above technical solution, when opening the sunshade net, the driving motor rotates forward, and the moving rod is driven to rotate through the driving gear to release the sunshade net wound on the moving rod. At the same time, the moving rod moves along the driving rack with the driving gear, so that the sunshade net is laid above the filter tank and covers the filter tank; when retracting the sunshade net, the driving motor rotates in the reverse direction, so that the moving rod rotates in the reverse direction, and the sunshade net laid above the filter tank is retracted. At the same time, the moving rod moves along the driving rack with the driving gear to realize the folding of the sunshade net.

[0023] In a preferred example, the present invention can be further configured as follows: a sleeve is rotatably sleeved on the outer periphery of the moving rod, and the sunshade net is wound on the outer periphery of the sleeve, there is sliding friction between the inner periphery of the sleeve and the outer periphery of the moving rod, the driving gear is coaxially connected to the moving rod, and the diameter of the driving gear is larger than the outer diameter of the sleeve.

[0024] By adopting the above technical solution, when the sunshade net is opened, the rotation speed of the driving motor is constant, that is, the peripheral linear speed of the driving gear is constant, so that the slide moves away from the fixed end at a constant speed. At the same time, the sleeve rotates to release the sunshade net, and the reaction force of the sunshade net on the sleeve causes the sleeve and the moving rod to rotate relative to each other, so that the peripheral linear speed of the sleeve is equal to the peripheral linear speed of the driving gear. At this time, the rotation speed of the sleeve is greater than the rotation speed of the moving rod.

[0025] In a preferred example, the present invention can be further configured as follows: a ratchet mechanism is further provided between the driving gear and the output shaft of the driving motor, and when the moving rod is away from the fixed end of the sunshade net, the ratchet mechanism is locked.

[0026] By adopting the above technical solution, when opening the sunshade net, the moving rod is away from the fixed end of the sunshade net, and the ratchet mechanism is locked, so that the sunshade net can be released through the above process; when retracting the sunshade net, the driving motor rotates in the opposite direction to drive the moving rod to rotate, and the friction between the moving rod and the sleeve makes the two rotate at the same speed to realize the reeling of the sunshade net. At the same time, the reaction force of the sunshade net on the sleeve and the moving rod causes the moving rod to move toward the fixed end, that is, the slide moves toward the fixed end. At this time, the driving gear rotates accordingly, and the rotation speed of the driving gear is less than the rotation speed of the moving rod. The ratchet mechanism is not locked, so that the driving gear can rotate freely.

[0027] In a preferred example, the present invention can be further configured as follows: further comprising a salvage assembly, the salvage assembly comprising:

[0028] A connecting member is vertically arranged in the filter tank, and the upper end of the connecting member is connected to the slide seat; and

[0029] The grille is arranged at the lower end of the connecting piece, and the lower end of the grille extends below the water surface.

[0030] By adopting the above technical solution, there are floating objects such as duckweed and algae floating on the surface of the sewage water. When the slide seat moves away from the fixed end to open the sunshade net, the grille moves with the slide seat. Under the push of the grille, the duckweed and algae gather to one end of the filter tank for easy salvage, so as to further inhibit the massive reproduction of algae.

[0031] In a preferred example, the present invention can be further configured as follows: the salvage assembly further includes:

[0032] The adjusting rack is horizontally arranged and fixedly connected to the filter tank, and the adjusting rack is parallel to the sliding direction of the slide seat;

[0033] An adjusting gear, rotatably disposed on the slide seat and meshing with the adjusting rack;

[0034] A lifting rack is fixedly connected to the connecting member and is slidably disposed in the sliding seat in a vertical direction, the lifting rack meshes with the adjusting gear, and when the sliding seat is away from the fixed end of the sunshade net, the lifting rack moves downward; and

[0035] A return spring is retracted in the vertical direction, the lower end of the return spring is connected to the upper end of the connecting member, and the upper end of the return spring is connected to the slide seat;

[0036] There is a gap between the connecting piece and the outer periphery of the adjusting gear, and when the lifting rack moves upward and separates from the adjusting gear, the lower end of the grille moves upward and separates from the water surface.

[0037] By adopting the above technical solution, when the sliding seat is away from the fixed end to open the sunshade net, the lifting rack overcomes the elastic force of the reset spring and moves downward and then disengages from the adjusting gear. At this time, the lower end of the grille extends below the water surface to block duckweed and algae in the sewage; when the sliding seat is close to the fixed end to retract the sunshade net, the reset spring and the adjusting gear drive the lifting rack to move upward and then disengage from the adjusting gear. At this time, the lower end of the grille is separated from the water surface, avoiding duckweed and algae from being blocked under the sunshade net, making it easier to salvage the duckweed and algae in the sewage.

[0038] In a preferred example, the present invention can be further configured as follows: it also includes a steel wire mesh, the steel wire mesh is arranged at the upper end of the filter tank, and the sunshade net is laid on the steel wire mesh.

[0039] By adopting the above technical solution, the sunshade net is supported by the wire mesh to prevent the sunshade net from sagging and contacting the sewage in the filter tank, thereby preventing the sewage from corroding the sunshade net.

[0040] In summary, the present invention includes at least one of the following beneficial technical effects:

[0041] 1. Set up a sunshade net just above the filter to block the sunlight, so that the filter is in a dark state to inhibit the massive reproduction of algae;

[0042] 2. When the sunshade net is opened, the grille extending below the water surface moves accordingly. Pushed by the grille, duckweed and algae gather at one end of the filter tank, making it easier to salvage them, thereby further inhibiting the massive reproduction of algae. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0044] Figure 2 It is a schematic diagram of the overall structure of the sliding member and the driving assembly.

[0045] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0046] Figure 4 It is a schematic diagram of the overall structure of the sunshade device.

[0047] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B.

[0048] In the figure, 0, filter tank; 1, sunshade net; 11, fixed end; 12, moving end; 2, sliding member; 21, slide seat; 22, moving rod; 23, sleeve; 3, driving assembly; 31, driving rack; 32, driving gear; 33, driving motor; 34, ratchet mechanism; 341, ratchet; 342, supporting ring; 343, pawl; 344, clamping spring; 4, guide rail; 41, base; 5, wire mesh; 6, salvage assembly; 61, connecting member; 62, grille; 63, adjustment mechanism; 631, adjustment rack; 632, adjustment gear; 633, lifting rack; 634, reset spring. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0050] Reference Figure 1 , is a V-shaped filter tank to prevent algae growth mobile sunshade device disclosed in the present invention, which is arranged above the filter tank 0, and includes a sunshade net 1, a sliding member 2 and a driving assembly 3. One end of the sunshade net 1 is fixedly connected to the filter tank 0 as a fixed end 11, and the other end thereof is connected to the sliding member 2 as a movable end 12. The driving assembly 3 drives the sliding member 2 to slide back and forth above the filter tank 0, thereby driving the movable end 12 away from / close to the fixed end 11 to open / fold the sunshade net 1.

[0051] When the sunshade net 1 is opened, the sunshade net 1 covers the filter tank 0 to block the sunlight, so that the filter tank 0 is in a dark state to inhibit the massive reproduction of algae; when the sunshade net 1 is retracted, it is convenient for personnel to observe the working state of the filter tank 0 and the state of the sewage in the filter tank 0.

[0052] Reference Figure 1 , guide rails 4 are arranged side by side at the upper end of the filter tank 0, and two guide rails 4 are arranged on both sides of the filter tank 0. Figure 2 , 3 The sliding member 2 slides back and forth along the guide rail 4, and includes a sliding seat 21, a moving rod 22 and a sleeve 23.

[0053] There are two slide seats 21 which are slidably sleeved on the guide rail 4 respectively. The moving rod 22 is horizontally arranged and perpendicular to the guide rail 4. The two ends of the moving rod 22 are respectively rotated to connect the two slide seats 21, so that the moving rod 22 is horizontally placed directly above the filter tank 0. The sleeve 23 is coaxially rotated and sleeved on the moving rod 22. The moving end 12 of the sunshade net 1 is rolled around the outer periphery of the sleeve 23, and there is friction between the sleeve 23 and the moving rod 22.

[0054] When opening the sunshade net 1, the moving rod 22 and the sleeve 23 move in the direction away from the fixed end 11, and rotate synchronously to release the sunshade net 1 wound on the sleeve 23, so that the sunshade net 1 covers the filter tank 0; when retracting the sunshade net 1, the moving rod 22 and the sleeve 23 move in the direction close to the fixed end 11, and rotate synchronously in the opposite direction to retract the sunshade net 1.

[0055] Reference Figure 1 A steel wire mesh 5 is also provided between the two guide rails 4, and the sunshade net 1 is laid on the steel wire mesh 5 to support the sunshade net 1.

[0056] Reference Figure 1 , 3 The driving assembly 3 is disposed between the filter tank 0 and the sliding member 2 , and includes a driving rack 31 , a driving gear 32 and a driving motor 33 .

[0057] The driving rack 31 is arranged at the upper end of the guide rail 4, the driving gear 32 is rotatably arranged in the slide 21 and meshes with the driving rack 31, and the driving motor 33 drives the driving gear 32 to rotate forward / reverse to realize the reciprocating movement of the slide 21. At the same time, the output shaft of the driving motor 33 is coaxially connected to the moving rod 22 to drive the moving rod 22 to rotate forward / reverse to realize the releasing / rewinding of the sunshade net 1.

[0058] Reference Figure 3 The diameter of the driving gear 32 is larger than the outer diameter of the sleeve 23 , and a ratchet mechanism 34 is provided between the driving gear 32 and the moving rod 22 , and when the output shaft of the driving motor 33 rotates in the forward direction, the ratchet mechanism 34 is locked.

[0059] The peripheral linear speed of the driving gear 32 is equal to the sliding speed of the slide 21. When the driving motor 33 rotates forward to release the sunshade net 1, the ratchet mechanism 34 is locked, the rotation speed of the driving gear 32 is equal to the rotation speed of the moving rod 22, the sleeve 23 and the moving rod 22 rotate relative to each other, and the rotation speed of the sleeve 23 is greater than the rotation speed of the moving rod 22, so that the peripheral linear speed of the sleeve 23 is equal to the peripheral linear speed of the driving gear 32, that is, the speed of releasing the sunshade net 1 is equal to the sliding speed of the slide 21;

[0060] When the drive motor 33 rotates in the opposite direction to roll up the sunshade net 1, the rotation speed of the moving rod 22 is equal to the rotation speed of the output shaft of the drive motor 33, the linear velocity of the outer periphery of the sleeve 23 is equal to the sliding speed of the slide 21, and at this time, the peripheral linear velocity of the drive gear 32 is equal to the sliding speed of the slide 21, then the rotation speed of the drive gear 32 is less than the rotation speed of the output shaft of the drive motor 33, that is, the ratchet mechanism 34 is not locked.

[0061] In this embodiment, the moving rod 22 is coaxially fixedly connected to the ratchet 341, and a support ring 342 is sleeved on the outer periphery of the ratchet 341. The driving gear 32 is coaxially fixedly connected to the support ring 342. Ratchets 343 are spaced apart on the inner periphery of the support ring 342. Three ratchet pawls 343 are hinged on the support ring 342. A clamping spring 344 is provided between the side of the ratchet 343 facing away from the ratchet 341 and the inner periphery of the support ring 342, so that the ratchet 343 presses against the outer periphery of the ratchet 341.

[0062] Reference Figure 3 , 4 A base 41 is provided at the lower end of the guide rail 4, so that there is a gap between the lower end of the guide rail 4 and the upper end of the filter tank 0. The slide 21 extends downward from the opposite side of the two guide rails 4, and extends into the filter tank 0 through the gap between the lower end of the guide rail 4 and the upper end of the filter tank 0. A salvage component 6 is provided at the lower end of the slide 21. When the slide 21 is away from the fixed end 11 to open the sunshade net 1, the salvage component 6 moves with the slide 21, and makes the duckweed and algae on the sewage surface gather to one end of the filter tank 0, which is convenient for salvage, so as to further inhibit the massive reproduction of algae.

[0063] Reference Figure 4 , 5 The salvaging assembly 6 includes a connecting piece 61 , a grid 62 and an adjusting mechanism 63 .

[0064] The connecting member 61 is vertically arranged, and the upper end of the connecting member 61 is slidably embedded in the slide seat 21 along the vertical direction, and the lower end thereof extends out of the slide seat 21. The grille 62 is fixedly connected to the lower end of the connecting member 61, and the grille 62 moves up and down with the connecting member 61. The adjusting mechanism 63 is arranged between the slide seat 21 and the connecting member 61, and is used to adjust the height of the connecting member 61 in the vertical direction so that the lower end of the grille 62 extends below the water surface of the sewage or is out of the water surface.

[0065] The adjustment mechanism 63 includes an adjustment rack 631 , an adjustment gear 632 , a lifting rack 633 and a return spring 634 .

[0066] The adjusting rack 631 is arranged at the lower end of the guide rail 4; the adjusting gear 632 is rotatably arranged in the slide 21 and meshes with the adjusting rack 631; the lifting rack 633 is fixedly connected to the connecting piece 61 and is arranged in the vertical direction, the lifting rack 633 meshes with the adjusting gear 632, and when the slide 21 is away from the fixed end 11 of the sunshade net 1, the adjusting gear 632 rotates in the opposite direction and the lifting rack 633 moves downward; the reset spring 634 is arranged in the slide 21 and retracts in the vertical direction, the lower end of the reset spring 634 is fixedly connected to the upper end of the connecting piece 61, and the upper end of the reset spring 634 is fixedly connected to the slide 21.

[0067] When the slide 21 is away from the fixed end 11 to open the sunshade net 1, the lower end of the grille 62 extends below the water surface to block the duckweed and algae in the sewage; when the slide 21 is close to the fixed end 11 to retract the sunshade net 1, the lower end of the grille 62 is separated from the water surface to avoid blocking the duckweed and algae under the sunshade net 1, thereby facilitating the salvage of the duckweed and algae in the sewage.

[0068] The implementation principle of this embodiment is as follows: when the sunshade net 1 is opened, the output shaft of the driving motor 33 rotates forward, the ratchet mechanism 34 is locked, the driving gear 32 rotates synchronously at a constant speed, and the output shaft of the driving motor 33 directly drives the moving rod 22 to rotate forward, releasing the sunshade net 1 wound on the sleeve 23, so that the sunshade net 1 covers the filter tank 0. At this time, the reaction force of the sunshade net 1 on the sleeve 23 causes the sleeve 23 and the moving rod 22 to rotate relative to each other, so that the peripheral linear velocity of the sleeve 23 is equal to the peripheral linear velocity of the driving gear 32. At the same time, the adjusting gear 632 rotates in the opposite direction, so that the lifting rack 633 overcomes the elastic force of the reset spring 634 and moves downward and then disengages from the adjusting gear 632. At this time, the lower end of the grille 62 extends below the water surface to block duckweed and algae in the sewage. Under the push of the grille 62, the duckweed and algae gather at one end of the filter tank 0 for easy salvage.

[0069] When the sunshade net 1 is folded up, the output shaft of the drive motor 33 rotates in the opposite direction, and the ratchet mechanism 34 is not locked. The output shaft of the drive motor 33 directly drives the moving rod 22 to rotate in the opposite direction, and the friction between the moving rod 22 and the sleeve 23 makes the two rotate at the same speed to realize the winding of the sunshade net 1. At this time, the reaction force of the sunshade net 1 on the sleeve 23, the moving rod 22 and the slide 21 makes the slide 21 move toward the fixed end 11. At the same time, the adjusting gear 632 rotates forward and cooperates with the reset spring 634 to drive the lifting rack 633 to move upward and then disengage from the adjusting gear 632. At this time, the lower end of the grille 62 is separated from the water surface to prevent the grille 62 from blocking duckweed and algae under the sunshade net 1, so as to facilitate the salvage of duckweed and algae in the sewage.

[0070] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A V-shaped filter tank to prevent algae growth mobile sunshade device, arranged above the filter tank, characterized in that: include: A sunshade net (1) having one end fixedly connected to the filter tank as a fixed end (11) and the other end opposite thereto as a movable end (12) for covering the filter tank; A sliding member (2) is slidably disposed above the filter tank, and the sliding member (2) is fixedly connected to the moving end (12) of the sunshade net (1); and A driving assembly (3) for driving the sliding member (2) to slide back and forth, thereby opening or retracting the sunshade net (1); The sliding member (2) comprises: A sliding seat (21) is slidably disposed on the upper end of the filter tank; and A moving rod (22) is horizontally arranged and fixedly connected to the sliding seat (21), and the moving rod (22) extends in a sliding direction perpendicular to the sliding seat (21) to just above the filter tank, and the moving rod (22) is fixedly connected to the moving end (12) of the sunshade net (1); It also includes a salvage assembly (6), the salvage assembly (6) comprising: A connecting member (61) is vertically arranged in the filter tank, and the upper end of the connecting member (61) is connected to the sliding seat (21); and A grille (62) is provided at the lower end of the connecting member (61), and the lower end of the grille (62) extends below the water surface; The salvaging assembly (6) further comprises: Adjust the rack (631), set it horizontally and fix it to the filter tank, and adjust the rack (631) to be parallel to the sliding direction of the slide seat (21); An adjusting gear (632) rotatably disposed on the slide seat (21) and meshing with the adjusting rack (631); a lifting rack (633) fixedly connected to the connecting member (61) and slidably disposed in the slide seat (21) in a vertical direction, the lifting rack (633) meshing with the adjustment gear (632), and when the slide seat (21) moves away from the fixed end (11) of the sunshade net (1), the lifting rack (633) moves downward; and A return spring (634) is retracted in a vertical direction, the lower end of the return spring (634) is connected to the upper end of the connecting member (61), and the upper end of the return spring (634) is connected to the sliding seat (21); There is a gap between the connecting member (61) and the outer periphery of the adjusting gear (632), and when the lifting rack (633) moves upward and disengages from the adjusting gear (632), the lower end of the grille (62) moves upward and disengages from the water surface; It also comprises a steel wire mesh (5), wherein the steel wire mesh (5) is arranged at the upper end of the filter tank, and the sunshade net (1) is laid on the steel wire mesh (5).

2. A mobile sunshade device for preventing algae growth in a V-shaped filter according to claim 1, characterized in that: The driving component (3) comprises: A driving rack (31) is horizontally arranged at the upper end of the filter tank and extends in a direction parallel to the sliding direction of the slide seat (21); a driving gear (32) rotatably connected to the slide seat (21) and used to cooperate with the driving rack (31); and The driving motor (33) is used to drive the driving gear (32) to rotate.

3. A mobile sunshade device for preventing algae growth in a V-shaped filter according to claim 2, characterized in that: The movable rod (22) is rotatably connected to the slide seat (21), and the sunshade net (1) is wound around the outer circumference of the movable rod (22). The driving motor (33) synchronously drives the movable rod (22) to rotate, and when the movable rod (22) is close to the fixed end (11) of the sunshade net (1), the movable rod (22) reels the sunshade net (1).

4. A mobile sunshade device for preventing algae growth in a V-shaped filter according to claim 3, characterized in that: The outer periphery of the movable rod (22) is rotatably sleeved with a sleeve (23), and the sunshade net (1) is wound around the outer periphery of the sleeve (23), and sliding friction exists between the inner periphery of the sleeve (23) and the outer periphery of the movable rod (22); the driving gear (32) is coaxially connected to the movable rod (22), and the diameter of the driving gear (32) is larger than the outer diameter of the sleeve (23).

5. A mobile sunshade device for preventing algae growth in a V-shaped filter according to claim 4, characterized in that: A ratchet mechanism (34) is also provided between the driving gear (32) and the output shaft of the driving motor (33); when the moving rod (22) is away from the fixed end (11) of the sunshade net (1), the ratchet mechanism (34) is locked.

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