A treatment device and treatment method for Fenton sludge

Abstract

The present invention discloses a treatment device and a treatment method for Fenton sludge, specifically relating to the technical field of sludge treatment devices. It includes a device main body, a stirring bin, a device bin, a stirring structure and a sewage discharge structure; a plurality of drainage grooves are formed inside the device main body; the stirring bin is fixedly installed inside the device main body, and a plurality of filter nets are arranged on the inner wall; the device bin is fixed inside the stirring bin, and a driving motor is fixedly installed inside the device bin. Through the mutual cooperation of the stirring bin and the driving structure, while stirring the Fenton sludge to make its solid-liquid separation convenient for filtration, on the other hand, reciprocally hitting the filter net to make the harmful solids blocked on the surface of the filter net fall off; through the mutual cooperation of the stirring bin and the sewage discharge structure, when the filtration is completed, the pawl drives the transmission wheel to rotate counterclockwise, and when the silk thread is wound, it drives the closing rod to move towards the transmission wheel. After the filtration is completed, the Fenton sludge falls downward under gravity and is discharged from the stirring bin, avoiding the contact between the staff and the Fenton sludge.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment devices, and particularly to a treatment device and a treatment method for Fenton sludge. Background Art

[0002] With the continuous advancement of the industrialization process, the complexity and treatment difficulty of industrial sewage generated are increasing continuously. At the current industrial technology level, as an advanced oxidation technology, the Fenton method is widely used in the field of sewage treatment. This technology can effectively treat the refractory pollutants in sewage and improve the effluent index. However, while treating sewage, the Fenton method will generate a large amount of hazardous solid waste - Fenton sludge. Fenton sludge is generated in chemical reactions and mainly contains: ferric sulfate and its ferrous salts, pollutants in the original sewage (such as: organic pollutants, refractory biodegradable organics, heavy metal salts, other particulate matters, etc.), cationic polyacrylamide, sodium salts, microorganisms, etc.

[0003] In the process of using the existing treatment devices and treatment methods for Fenton sludge, the following problems exist:

[0004] The existing filtration of Fenton sludge is mainly carried out through a filter screen to separate the hazardous solid waste and liquid, which is convenient for subsequent drying treatment. However, Fenton sludge contains a large amount of hazardous solid waste such as ferric sulfate and its ferrous salts, pollutants in the original sewage, cationic polyacrylamide, sodium salts, and microorganisms. The solid waste will clog the filter screen, resulting in slow or even complete blockage of the filter screen, and the filtering effect of the filter screen fails.

[0005] The existing filtration device has a relatively simple structure and lacks an automatic discharge structure. After the filtration of Fenton sludge is completed, it is necessary for workers to discharge the residual harmful solids. Prolonged contact of workers with the residual harmful solids will cause physical damage. Therefore, there is a lack of a structure that can automatically discharge the harmful solids after filtration is completed. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a treatment device and method for Fenton sludge to solve the problems that the existing filtration of Fenton sludge is mainly carried out through a filter screen to separate hazardous solid waste and liquid for subsequent drying treatment. However, Fenton sludge contains a large amount of hazardous solid waste such as ferric sulfate and its ferrous salts, pollutants in the original sewage, cationic polyacrylamide, sodium salts, and microorganisms. The solid waste will block the filter screen, resulting in slow or even complete blockage of the filter screen, leading to the failure of the filter screen's filtering effect and the relatively simple structure of the existing filtering device, lacking an automatic discharge structure. When the filtration of Fenton sludge is completed, it is necessary for workers to discharge the residual harmful solids. Prolonged contact of workers with the residual harmful solids will cause physical damage, and thus lack a structure that can automatically discharge harmful solids after filtration is completed.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A treatment device for Fenton sludge, comprising:

[0009] The equipment main body, which is internally provided with a plurality of drainage grooves.

[0010] The stirring bin, which is fixedly installed inside the equipment main body, and its inner wall is provided with a plurality of filter screens.

[0011] The device bin, which is fixed inside the stirring bin, and a driving motor is fixedly installed inside the device bin.

[0012] The treatment device for Fenton sludge further comprises:

[0013] The stirring structure, which includes a driving rod, a moving block, a plurality of stirring blocks, a stirring rod, an elastic connecting rod, and a pawl; the driving rod is fixedly installed at the driving end of the driving motor; a threaded layer is fixedly installed on the surface of the driving rod; a moving block is movably connected to the surface of the threaded layer, and the threaded layer and the moving block form a reciprocating lead screw structure; a plurality of stirring blocks are fixedly installed on the surface of the driving rod; the left and right sides of the stirring block are slidably connected to the stirring rod; a plurality of elastic connecting rods are movably connected to the surface of the moving block, and one end of the elastic connecting rod is slidably connected to the stirring rod; a pawl is movably connected to the surface of the driving rod.

[0014] In a preferred embodiment, the treatment device for Fenton sludge further comprises a sewage discharge structure, which includes a transmission wheel, a silk thread, a closing rod, and an elastic rod; the transmission wheel is sleeved on the surface of the driving rod and is in the same plane as the pawl; a plurality of silk threads are fixedly connected to the surface of the transmission wheel; the other end of the silk thread is fixedly connected to the closing rod, and one end of the closing rod penetrates through the device bin and contacts the inner wall of the stirring bin. The two sides of the closing rod are slidably connected to the elastic rod, and one end of the elastic rod is fixedly installed on the inner wall of the device bin.

[0015] In a preferred embodiment, the shape of the device body is cylindrical.

[0016] In a preferred embodiment, the inner wall diameter of the stirring bin decreases to half from top to bottom.

[0017] In a preferred embodiment, the driving rod is cylindrical.

[0018] In a preferred embodiment, a telescopic spring rod is arranged inside the elastic connecting rod.

[0019] In a preferred embodiment, the diameter of the threaded layer is half of the diameter of the driving rod.

[0020] In a preferred embodiment, the material of the silk thread is waterproof steel wire.

[0021] In a preferred embodiment, one end of the closing rod away from the transmission wheel is made of waterproof rubber.

[0022] The present invention also discloses a method for treating Fenton sludge, which is applied to the above-mentioned Fenton sludge treatment device, and includes the following steps:

[0023] The staff injects Fenton sludge into the stirring bin and closes it.

[0024] Start the driving motor in the device bin, the driving motor starts to work, the driving end of the driving motor drives the driving rod to rotate clockwise, the driving rod drives the stirring rod to stir the Fenton sludge through the stirring block, the harmful solids in the Fenton sludge will move closer to the middle under the action of centrifugal force, the liquid will spread to the surroundings, the liquid enters the drainage trough through the filter screen and is discharged through the drainage trough, improving the filtering efficiency of the filter screen. At the same time, when the driving rod rotates, it will apply a rotational force to the moving block through the threaded layer. Since the moving block and the threaded layer form a reciprocating lead screw structure, the moving block moves up and down on the threaded layer. When the moving block moves downward, the moving block approaches the lower stirring block, so that the moving block applies an outward force to the stirring rod through the elastic connecting rod. Since the stirring rod is slidably connected to the stirring block, the stirring rod slides outward on the stirring block, and one end of the stirring rod contacts the filter screen. While the stirring rod stirs the sludge, it slides outward under the movement of the moving block and hits the surface of the filter screen, so that the harmful solids blocked on the filter screen are separated, thereby ensuring the normal operation of the filter screen. Similarly, when the moving block moves upward, the upper stirring rod hits the filter screen.

[0025] After the filtration is completed, the staff controls the driving end of the driving motor to rotate counterclockwise. When the driving rod rotates clockwise, since the ratchet pawl and the transmission wheel form a ratchet structure, the ratchet pawl does not apply a driving force to the transmission wheel, and the transmission wheel remains stationary. The closing rod contacts the inner wall of the mixing bin under the action of the elastic rod, making it airtight, ensuring the normal stirring and filtration of Fenton sludge in the mixing bin. When the filtration is completed, the staff controls the driving motor to rotate counterclockwise. The ratchet pawl drives the transmission wheel to rotate counterclockwise and winds the silk thread onto the surface. When the silk thread is wound, it drives the closing rod to move towards the transmission wheel. The closing rod moves inward against the elastic force of the spring on the elastic rod, causing the bottom of the mixing bin to open. After the filtration is completed, the Fenton sludge drops downward under gravity and is discharged from the mixing bin.

[0026] Compared with the prior art, the present invention provides a treatment device for Fenton sludge, which has the following beneficial effects:

[0027] 1. For the treatment device for Fenton sludge, through the mutual cooperation of the mixing bin and the driving structure, the staff starts the driving motor in the device bin, and the driving motor starts to work. The driving rod drives the stirring rod through the stirring block to stir the Fenton sludge. Under the action of centrifugal force, the harmful solids in the Fenton sludge move towards the middle, and the liquid diffuses towards the periphery. The liquid enters the drainage trough through the filter screen, improving the filtering efficiency of the filter screen. At the same time, when the driving rod rotates, it applies a rotational force to the moving block through the thread layer. Since the moving block and the thread layer form a reciprocating lead screw structure, when the moving block moves upward, the upper stirring rod strikes the filter screen, making it possible to stir the Fenton sludge for solid-liquid separation for easy filtration on the one hand, and strike the filter screen reciprocally on the other hand, causing the harmful solids blocking the surface of the filter screen to fall off.

[0028] 2. For the treatment device for Fenton sludge, through the mutual cooperation of the mixing bin and the sewage discharge structure, when the driving rod rotates clockwise, the ratchet pawl does not apply a driving force to the transmission wheel. The closing rod contacts the inner wall of the mixing bin under the action of the elastic rod, making it airtight, ensuring the normal stirring and filtration of Fenton sludge in the mixing bin. When the filtration is completed, the staff controls the driving motor to rotate counterclockwise. The ratchet pawl drives the transmission wheel to rotate counterclockwise, and when the silk thread is wound, it drives the closing rod to move towards the transmission wheel, causing the bottom of the mixing bin to open. After the filtration is completed, the Fenton sludge drops downward under gravity and is discharged from the mixing bin, avoiding the staff from contacting the Fenton sludge and causing physical injury. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the internal structure of the equipment main body of the structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of the mixing bin of the structure of the present invention;

[0031] Figure 3Schematic diagram of the device bin and stirring structure of the present invention;

[0032] Figure 4 Schematic diagram of the initial state of the stirring structure of the present invention;

[0033] Figure 5 Schematic diagram of the striking state of the stirring structure of the present invention;

[0034] Figure 6 Schematic diagram of the device bin and sewage discharge structure of the present invention;

[0035] Figure 7 Internal schematic diagram of the driving wheel of the present invention structure.

[0036] In the figure: 1, equipment main body; 11, drainage trough; 2, stirring bin; 21, filter screen; 3, device bin; 31, driving motor; 4, stirring structure; 41, driving rod; 42, thread layer; 43, moving block; 44, stirring block; 45, stirring rod; 46, elastic connecting rod; 461, telescopic spring rod; 47, pawl; 5, sewage discharge structure; 51, driving wheel; 52, silk thread; 53, closing rod; 54, elastic rod. Embodiment

[0037] The following specific specific embodiments illustrate the implementation manners of the present invention. Those familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention. Example

[0038] Please refer to Figures 1 - 5 , a Fenton sludge treatment device, including an equipment main body 1, a stirring bin 2, a device bin 3, and a stirring structure 4; a plurality of drainage troughs 11 are provided inside the equipment main body 1; the stirring bin 2 is fixedly installed inside the equipment main body 1, and a plurality of filter screens 21 are provided on the inner wall; the device bin 3 is fixed inside the stirring bin 2, and a driving motor 31 is fixedly installed inside the device bin 3.

[0039] The shape of the equipment main body 1 is a cylinder, and the cylinder can avoid stirring dead angles during the operation of the stirring structure 4 and improve the stirring efficiency.

[0040] The inner wall diameter of the stirring bin 2 decreases to half from top to bottom, so that the Fenton sludge flows downward along the inner wall of the stirring bin 2, facilitating subsequent discharge.

[0041] The stirring structure 4 includes a driving rod 41, a moving block 43, multiple stirring blocks 44, a stirring rod 45, an elastic connecting rod 46, and a pawl 47; the driving rod 41 is cylindrical, which can reduce the volume of the driving rod 41 and increase the stirring volume in the stirring bin 2. The driving rod 41 is fixedly installed at the driving end of the driving motor 31; a threaded layer 42 is fixedly installed on the surface of the driving rod 41; the moving block 43 is movably connected to the surface of the threaded layer 42, and the threaded layer 42 and the moving block 43 form a reciprocating lead screw structure; the diameter of the threaded layer 42 is half of the diameter of the driving rod 41, so as to limit the stable movement of the moving block 43 on the threaded layer 42.

[0042] A plurality of stirring blocks 44 are fixedly installed on the surface of the driving rod 41; the stirring rod 45 is slidably connected to the left and right sides of the stirring block 44; a plurality of elastic connecting rods 46 are movably connected to the surface of the moving block 43, and one end of the elastic connecting rod 46 is slidably connected to the stirring rod 45; a telescopic spring rod 461 is arranged inside the elastic connecting rod 46, which can increase the elasticity of the elastic connecting rod 46 and prevent the elastic connecting rod 46 from breaking due to the rebounding force generated by the stirring rod 45. The pawl 47 is movably connected to the surface of the driving rod 41.

[0043] During use, the staff injects Fenton sludge into the stirring bin 2. After the injection is completed, the staff seals the equipment main body 1 to prevent the leakage of toxic gases.

[0044] Then, the driving motor 31 in the device bin 3 is started, and the driving motor 31 starts to work. The driving end of the driving motor 31 drives the driving rod 41 to rotate clockwise. The driving rod 41 drives the stirring rod 45 through the stirring block 44 to stir the Fenton sludge. Under the action of centrifugal force, the harmful solids in the Fenton sludge move closer to the middle, and the liquid diffuses to the surroundings. The liquid enters the drainage groove 11 through the filter screen 21 and is discharged through the drainage groove 11, improving the filtering efficiency of the filter screen 21.

[0045] At the same time, when the driving rod 41 rotates, it will apply a rotational force to the moving block 43 through the threaded layer 42. Since the moving block 43 and the threaded layer 42 form a reciprocating lead screw structure, the moving block 43 moves up and down on the threaded layer 42. When the moving block 43 moves downward, the moving block 43 approaches the lower stirring block 44, so that the moving block 43 applies an outward force to the stirring rod 45 through the elastic connecting rod 46. Since the stirring rod 45 is slidably connected to the stirring block 44, the stirring rod 45 slides outward on the stirring block 44. One end of the stirring rod 45 contacts the filter screen 21. While stirring the sludge, the stirring rod 45 slides outward under the movement of the moving block 43 and strikes the surface of the filter screen 21, so that the harmful solids blocked on the filter screen 21 fall off, thereby ensuring the normal operation of the filter screen 21.

[0046] Similarly, when the moving block 43 moves upward, the upper stirring rod 45 strikes the filter screen 21, so that on the one hand, the Fenton sludge is stirred to achieve solid-liquid separation for filtration, and on the other hand, the filter screen 21 is reciprocally struck to make the harmful solids blocked on the surface of the filter screen 21 break away, ensuring the filtration efficiency of the filter screen 21, which is superior to the existing filtration structure. Solid waste will block the filter screen 21, resulting in slow filtration or even complete blockage of the filter screen 21, causing the filtration effect of the filter screen 21 to fail. Embodiment

[0047] Please refer to Figures 1 - 7 , a treatment device for Fenton sludge in this embodiment. The structure of this embodiment is basically the same as that of Embodiment 1, except that in this embodiment, a sewage discharge structure 5 is additionally provided in the treatment device for Fenton sludge. The sewage discharge structure 5 includes a transmission wheel 51, a silk thread 52, a closing rod 53 and an elastic rod 54; the transmission wheel 51 is sleeved on the surface of the driving rod 41 and is in the same plane as the ratchet pawl 47; a plurality of silk threads 52 are fixedly connected to the surface of the transmission wheel 51; the other end of the silk thread 52 is fixedly connected to the closing rod 53, and one end of the closing rod 53 penetrates through the device bin 3 and contacts the inner wall of the stirring bin 2. The two sides of the closing rod 53 are slidably connected with the elastic rod 54, and one end of the elastic rod 54 is fixedly installed on the inner wall of the device bin 3.

[0048] The material of the silk thread 52 is waterproof steel wire, which improves the waterproof performance of the silk thread 52 and prolongs its service life in the device bin 3.

[0049] One end of the closing rod 53 away from the transmission wheel 51 is made of waterproof rubber, which improves the waterproof property at the contact between the closing rod 53 and the inner wall of the stirring bin 2 and ensures its sealing property.

[0050] When the driving rod 41 rotates clockwise, since the ratchet pawl 47 and the transmission wheel 51 form a ratchet structure, the ratchet pawl 47 does not apply a driving force to the transmission wheel 51, and the transmission wheel 51 remains stationary. The closing rod 53 contacts the inner wall of the stirring bin 2 under the action of the elastic rod 54 to seal it, ensuring the normal stirring and filtration of Fenton sludge in the stirring bin 2. After filtration, the staff controls the driving motor 31 to rotate counterclockwise. The ratchet pawl 47 drives the transmission wheel 51 to rotate counterclockwise and winds the silk thread 52 onto its surface. When the silk thread 52 is wound, it drives the closing rod 53 to move towards the transmission wheel 51. The closing rod 53 moves inward against the elastic force of the spring on the elastic rod 54, so that the bottom of the stirring bin 2 is opened. After filtration, the Fenton sludge drops downward under gravity and is discharged from the stirring bin 2, avoiding contact with the staff and causing physical injury, which is superior to the existing situation where after the Fenton sludge is filtered, the staff needs to discharge the remaining harmful solids, and long-term contact with the remaining harmful solids by the staff will cause physical injury. Embodiment

[0051] Refer to the appendixFigure 1 - Attachment Figure 7 In this embodiment, a method for treating Fenton sludge is provided. By applying the treatment devices of Embodiment 1 and Embodiment 2 above, the method includes the following steps:

[0052] The staff injects Fenton sludge into the stirring bin 2 and closes it.

[0053] Start the drive motor 31 in the device bin 3. The drive motor 31 starts to work. The drive end of the drive motor 31 drives the drive rod 41 to rotate clockwise. The drive rod 41 drives the stirring rod 45 to stir the Fenton sludge through the stirring block 44. Under the action of centrifugal force, the harmful solids in the Fenton sludge move closer to the middle, and the liquid diffuses to the surroundings. The liquid enters the drainage trough 11 through the filter screen 21 and is discharged through the drainage trough 11, improving the filtering efficiency of the filter screen 21. At the same time, when the drive rod 41 rotates, it will apply a rotational force to the moving block 43 through the thread layer 42. Since the moving block 43 and the thread layer 42 form a reciprocating lead screw structure, the moving block 43 moves up and down on the thread layer 42. When the moving block 43 moves downward, the moving block 43 approaches the lower stirring block 44, so that the moving block 43 applies an outward force to the stirring rod 45 through the elastic connecting rod 46. Since the stirring rod 45 is slidably connected to the stirring block 44, the stirring rod 45 slides outward on the stirring block 44. One end of the stirring rod 45 contacts the filter screen 21. While the stirring rod 45 stirs the sludge, it slides outward under the movement of the moving block 43 and strikes the surface of the filter screen 21, causing the harmful solids blocked on the filter screen 21 to break away, thereby ensuring the normal operation of the filter screen 21. Similarly, when the moving block 43 moves upward, the upper stirring rod 45 strikes the filter screen 21.

[0054] After the filtration is completed, the staff controls the drive end of the drive motor 31 to rotate counterclockwise. When the drive rod 41 rotates clockwise, since the pawl 47 and the transmission wheel 51 form a ratchet structure, the pawl 47 does not apply a transmission force to the transmission wheel 51, and the transmission wheel 51 remains stationary. The closing rod 53 contacts the inner wall of the stirring bin 2 under the action of the elastic rod 54 to seal it, ensuring the normal stirring and filtration of Fenton sludge in the stirring bin 2. When the filtration is completed, the staff controls the drive motor 31 to rotate counterclockwise. The pawl 47 drives the transmission wheel 51 to rotate counterclockwise and winds the silk thread 52 to its surface. When the silk thread 52 is wound, it drives the closing rod 53 to move toward the transmission wheel 51. The closing rod 53 moves inward against the elastic force of the spring on the elastic rod 54, so that the bottom of the stirring bin 2 opens. After the filtration is completed, the Fenton sludge drops downward under gravity and is discharged from the stirring bin 2.

[0055] All technical features in this embodiment can be freely combined according to actual needs.

[0056] The above embodiments are preferred implementation solutions of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious substitution without departing from the concept of the technical solution of the present invention is within the protection scope of the present invention.

Claims

1. A treatment device for Fenton sludge, comprising: A device main body (1) with a plurality of drainage grooves (11) formed inside thereof; A stirring bin (2) fixedly installed inside the device main body (1), and a plurality of filter meshes (21) are formed on the inner wall thereof; A device bin (3) fixed inside the stirring bin (2), and a driving motor (31) is fixedly installed inside the device bin (3); Characterized in that the treatment device for Fenton sludge further comprises: A stirring structure (4), which includes a driving rod (41), a moving block (43), a plurality of stirring blocks (44), a stirring rod (45), an elastic connecting rod (46) and a pawl (47); the driving rod (41) is fixedly installed at the driving end of the driving motor (31); a threaded layer (42) is fixedly installed on the surface of the driving rod (41); the moving block (43) is movably connected to the surface of the threaded layer (42), and the threaded layer (42) and the moving block (43) form a reciprocating lead screw structure; a plurality of stirring blocks (44) are fixedly installed on the surface of the driving rod (41); the stirring rod (45) is slidably connected to the left and right sides of the stirring block (44); a plurality of elastic connecting rods (46) are movably connected to the surface of the moving block (43), and one end of the elastic connecting rod (46) is slidably connected to the stirring rod (45); the pawl (47) is movably connected to the surface of the driving rod (41); A sewage discharge structure (5), which includes a transmission wheel (51), a silk thread (52), a closing rod (53) and an elastic rod (54); the transmission wheel (51) is sleeved on the surface of the driving rod (41) and is in the same plane as the pawl (47); a plurality of silk threads (52) are fixedly connected to the surface of the transmission wheel (51); the other end of the silk thread (52) is fixedly connected to the closing rod (53), and one end of the closing rod (53) penetrates through the device bin (3) and contacts the inner wall of the stirring bin (2), and the elastic rod (54) is slidably connected to both sides of the closing rod (53), and one end of the elastic rod (54) is fixedly installed on the inner wall of the device bin (3); Wherein, a telescopic spring rod (461) is arranged inside the elastic connecting rod (46); the diameter of the threaded layer (42) is half of the diameter of the driving rod (41); while stirring the sludge, the stirring rod (45) slides outwards under the movement of the moving block (43) and strikes the surface of the filter mesh (21).

2. A treatment device for Fenton sludge according to claim 1, characterized in that: The device main body (1) is cylindrical in shape.

3. A treatment device for Fenton sludge according to claim 1, characterized in that: The inner wall diameter of the stirring bin (2) decreases to half from top to bottom.

4. A treatment device for Fenton sludge according to claim 1, characterized in that: The driving rod (41) is cylindrical.

5. A treatment device for Fenton sludge according to claim 1, characterized in that: The silk thread (52) is made of waterproof steel wire.

6. A treatment device for Fenton sludge according to claim 1, characterized in that: One end of the closing rod (53) away from the transmission wheel (51) is made of waterproof rubber.

7. A method for treating Fenton sludge, applying the Fenton sludge treatment device described in any one of claims 1-6, characterized in that, it includes the following steps: The staff injects Fenton sludge into the stirring bin (2) and closes it; Start the drive motor (31) in the device bin (3), the drive motor (31) starts to work, the drive end of the drive motor (31) drives the drive rod (41) to rotate clockwise, the drive rod (41) drives the stirring rod (45) to stir the Fenton sludge through the stirring block (44). Under the action of centrifugal force, the harmful solids in the Fenton sludge move closer to the middle, and the liquid diffuses to the surroundings. The liquid enters the drainage trough (11) through the filter screen (21) and is discharged through the drainage trough (11), improving the filtering efficiency of the filter screen (21). At the same time, when the drive rod (41) rotates, it will apply a rotational force to the moving block (43) through the thread layer (42). The moving block (43) and the thread layer (42) form a reciprocating lead screw structure, so that the moving block (43) moves up and down in the thread layer (42) section. When the moving block (43) moves downward, the moving block (43) approaches the lower stirring block (44), so that the moving block (43) applies an outward force to the stirring rod (45) through the elastic connecting rod (46). The stirring rod (45) is slidably connected to the stirring block (44), so that the stirring rod (45) slides outward on the stirring block (44). One end of the stirring rod (45) contacts the filter screen (21). While the stirring rod (45) stirs the sludge, it slides outward under the movement of the moving block (43) and strikes the surface of the filter screen (21), so that the harmful solids blocked on the filter screen (21) fall off, thus ensuring the normal operation of the filter screen (21). Similarly, when the moving block (43) moves upward, the upper stirring rod (45) strikes the filter screen (21); After the filtration is completed, the staff controls the drive end of the drive motor (31) to rotate counterclockwise. When the drive rod (41) rotates clockwise, the pawl (47) and the transmission wheel (51) form a ratchet structure, so the pawl (47) does not apply a transmission force to the transmission wheel (51), and the transmission wheel (51) remains stationary. The closing rod (53) contacts the inner wall of the stirring bin (2) under the action of the elastic rod (54) to seal it, ensuring the normal stirring and filtration of Fenton sludge in the stirring bin (2). After the filtration is completed, the staff controls the drive motor (31) to rotate counterclockwise, the pawl (47) drives the transmission wheel (51) to rotate counterclockwise, and winds the silk thread (52) onto the surface. When the silk thread (52) is wound, it drives the closing rod (53) to move towards the transmission wheel (51). The closing rod (53) moves inward against the elastic force of the spring on the elastic rod (54), so that the bottom of the stirring bin (2) opens. After the filtration is completed, the Fenton sludge falls downward under gravity and is discharged from the stirring bin (2).

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