Chemical sewage pretreatment device for ozone oxidation

Abstract

The invention discloses an ozonation chemical sewage pretreatment device, and belongs to the field of sewage pretreatment, the ozonation chemical sewage pretreatment device comprises a barrel body, a water inlet is assembled at the top of the barrel body, a water outlet pipe is fixedly connected to the bottom of the barrel body, a discharge pipe is fixedly connected to the bottom of the barrel body, and a fixing frame is fixedly connected to the bottom of the barrel body; a motor is fixedly connected to the top of the fixing frame, a first telescopic rod is rotatably connected to the top of the inner wall of the barrel body through a bearing, a sieve plate is fixedly connected to the bottom of the first telescopic rod, a material collecting bag is fixedly connected to the bottom of the sieve plate, and a discharging hole is formed in the top of the sieve plate. The second telescopic rod is driven by the first telescopic rod, the permanent magnet is driven by the magnetizer to ascend, and then the sieve plate ascends. And when the sieve plate ascends, small fragments enter a material receiving bag through a discharging hole below the sieve plate. Through lifting of the sieve plate and control of the sealing cover, solid matters can be effectively prevented from being accumulated at the top of the sieve plate, so that sewage purification is kept smooth.

Description

Technical Field

[0001] This application relates to the field of sewage pretreatment. Specifically, it relates to a chemical sewage pretreatment device for ozone oxidation. Background Art

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharging into a certain water body or for reuse. Sewage treatment is widely applied in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering. However, with the development of society, more and more sewage is generated. In the process of sewage treatment, the first step is to remove some fixed impurities in the sewage.

[0003] The patent document with the publication number CN113003632B discloses a pretreatment type domestic sewage treatment device. The pretreatment type domestic sewage treatment device includes a chemical feeding port assembly and a grinding assembly; the grinding assembly includes a grinding ring and a cutter head that rotate driven by a motor; the chemical feeding port assembly includes an annular baffle, a spring, and an outer ring. A first chemical feeding port for discharging a purification agent is provided on the outer ring; a material discharging hole is provided on the annular baffle. The spring urges the material discharging hole to align with the first chemical feeding port. An elastic baffle block that passes through the first chemical material is provided on the lower side of the annular baffle. It drives the annular baffle to rotate to block the first chemical feeding port and stretch the spring under the impact of an impact block at the upper end of the grinding ring. After the annular baffle rotates to the maximum stroke position, the impact block and the elastic baffle block are staggered, and then the elastic baffle block drives the annular baffle to flip to open the first chemical feeding port. The greater the load on the cutter head, the smaller the rotation speed of the grinding ring, the greater the time interval between impacts on the elastic baffle block, and the greater the stroke of the annular baffle to restore conduction of the first chemical feeding port. Although the above application document crushes and grinds solid substances in sewage through the cutter head and the grinding ring, if they are not discharged in time, they may accumulate in the grinding chamber, filter plate, or discharge pipeline, reducing the sewage flow resistance and preventing shutdown and maintenance caused by blockage. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a chemical sewage pretreatment device for ozone oxidation, which solves the problems raised in the above background art.

[0005] To achieve the above object, the present application provides a chemical sewage pretreatment device for ozone oxidation, including a barrel body. An inlet is assembled at the top of the barrel body. A water outlet pipe is fixedly connected to the bottom of the barrel body. A discharge pipe is fixedly connected to the bottom of the barrel body. A fixed frame is fixedly connected to the bottom of the barrel body. A motor is fixedly connected to the top of the fixing frame. The top of the inner wall of the barrel is rotatably connected to a first telescopic rod through a bearing. The bottom of the first telescopic rod is fixedly connected to a sieve plate. The bottom of the sieve plate is fixedly connected to a material collection bag. A material discharge hole is formed in the top of the sieve plate, and a water filtering hole is formed in the top of the sieve plate. A sliding groove is formed in the outer wall of the barrel. A second telescopic rod is fixedly connected to the outer wall of the first telescopic rod. The bottom of the second telescopic rod is fixedly connected to a magnetic conductor, and the magnetic conductor is magnetically connected to a permanent magnet. The bottom of the material discharge hole is hinged with a cover, and a spring is fixedly connected to the side of the cover. A scraping device for scraping debris on the top of the sieve plate is assembled inside the barrel, and a knocking device for knocking the material collection bag is assembled inside the barrel.

[0006] Preferably, the bottom of the inner wall of the barrel is rotatably connected to a sleeve through a bearing. The material collection bag is fixedly connected to the outer wall of the sleeve, and the permanent magnet is fixedly connected to the outer wall of the sieve plate.

[0007] Preferably, a crushing knife is fixedly connected to the outer wall of the first telescopic rod. The first telescopic rod extends upward through the barrel in an active manner and is fixedly connected to the output end of the motor. The material collection bag is elastic.

[0008] Preferably, a chamfer for debris is formed at the top of the material discharge hole. The size of the water filtering hole is smaller than that of the material discharge hole. The outlet at the bottom of the sleeve is communicated with the top of the discharge pipe.

[0009] Preferably, the scraping device includes a first hydraulic chamber fixedly connected to the outer wall of the first telescopic rod. A first hydraulic rod is slidably connected to one end inside the first hydraulic chamber through a piston. The first hydraulic rod is fixedly connected to the top of the sieve plate. A second hydraulic chamber is fixedly connected to the top of the sieve plate. A second hydraulic rod is slidably connected to one end inside the second hydraulic chamber through a piston. A ratchet wheel is fixedly connected to the top of the second hydraulic rod. A ferrule is rotatably connected to the top of the sieve plate through a bearing. A ratchet pawl is hinged to the inner wall of the ferrule, and a scraping block is fixedly connected to the outer wall of the ferrule.

[0010] Preferably, the ratchet wheel and the ratchet pawl are meshed with each other. A connecting hose is fixedly connected to the bottom of the first hydraulic chamber, and the end of the connecting hose far from the first hydraulic chamber is fixedly connected to the top of the second hydraulic chamber.

[0011] Preferably, the knocking device includes a telescopic plate fixedly connected to the bottom of the sieve plate. A fixing plate is fixedly connected to the front of the telescopic plate. A rotating rod is rotatably connected to the back of the fixing plate through a bearing. A circular gear is fixedly connected to the outer wall of the rotating rod. An elastic telescopic rod is fixedly connected to the side of the rotating rod. A hemispherical knocking block is fixedly connected to the front of the elastic telescopic rod.

[0012] Preferably, a rack is fixedly connected to the bottom of the sieve plate, and the circular gear is meshed with the rack.

[0013] The advantages of the present application are as follows: First, in the present application, the first telescopic rod drives the second telescopic rod, and the magnetic conductor drives the permanent magnet to rise, thereby causing the sieve plate to rise. When the sieve plate rises, small pieces of debris enter the collection bag through the material discharge holes below the sieve plate. By controlling the lifting of the sieve plate and the cover, the accumulation of solid substances on the top of the sieve plate can be effectively prevented, thus ensuring the smooth sewage purification process.

[0014] Second, when the sieve plate rises in the present application, the cooperation of the first hydraulic rod and the second hydraulic rod drives the ratchet and the pawl to rotate counterclockwise. The ratchet drives the ferrule and the scraping block to rotate, and the scraping block pushes the residual solid substances and debris on the sieve plate into the material discharge holes. This process further improves the collection effect of solid substances and debris.

[0015] Third, when the sieve plate rises in the present application, the rack drives the circular gear, the rotating rod, and the elastic telescopic rod to move, and the elastic telescopic rod drives the hemispherical knocking block to rotate, knocking on the collection bag. The knocking effect deforms the collection bag, which helps the solid substances and debris to better deposit at the bottom of the inner wall of the barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings that form a part of this application are used to provide a further understanding of the application, making other features, objects, and advantages of the application more apparent. The schematic embodiments and descriptions of the drawings of the application are used to explain the application and do not constitute an improper limitation of the application. In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a front schematic diagram of a partial structure of the present invention; Figure 3 is a side schematic diagram of a partial structure of the present invention; Figure 4 is a bottom schematic diagram of a partial structure of the present invention; Figure 5 is a schematic diagram of a partial structure of the present invention; Figure 6 is of the present invention Figure 3 a magnified schematic diagram of the structure at A in; Figure 7 is of the present invention Figure 4 a magnified schematic diagram of the structure at B in.

[0017] In the above figures, 1. Barrel body; 21. Motor; 22. Second telescopic rod; 23. Magnetizer; 24. Permanent magnet; 25. First telescopic rod; 26. Sieve plate; 27. Material collection bag; 28. Feeding hole; 29. Water filtering hole; 210. Sealing cover; 211. Spring; 212. Crushing knife; 213. Sleeve; 3. Scraping device; 31. First hydraulic chamber; 32. First hydraulic rod; 33. Connecting hose; 34. Second hydraulic chamber; 35. Second hydraulic rod; 36. Ratchet; 37. Ferrule; 38. Scraping block; 39. Pawl; 4. Knocking device; 41. Telescopic plate; 42. Rack; 43. Fixed plate; 44. Rotating rod; 45. Circular gear; 46. Elastic telescopic rod; 47. Hemispherical knocking block; 5. Water inlet; 6. Water outlet pipe; 7. Discharge pipe; 8. Fixed frame. Detailed implementation manner

[0018] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0019] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0020] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0021] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0022] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with embodiments to detail this application.

[0024] Embodiment 1, see Figures 1-7 , this embodiment provides a chemical sewage pretreatment device for ozone oxidation, including a barrel body 1, an inlet 5 is assembled at the top of the barrel body 1, a water outlet pipe 6 is fixedly connected to the bottom of the barrel body 1, a discharge pipe 7 is fixedly connected to the bottom of the barrel body 1, and a fixing frame 8 is fixedly connected to the bottom of the barrel body 1; A motor 21 is fixedly connected to the top of the fixing frame 8. The top of the inner wall of the barrel 1 is rotatably connected to a first telescopic rod 25 through a bearing. The bottom of the first telescopic rod 25 is fixedly connected to a sieve plate 26. The bottom of the sieve plate 26 is fixedly connected to a material collection bag 27. A material discharge hole 28 is formed in the top of the sieve plate 26, and a water filtering hole 29 is formed in the top of the sieve plate 26. A sliding groove is formed in the outer wall of the barrel 1. A second telescopic rod 22 is fixedly connected to the outer wall of the first telescopic rod 25. The bottom of the second telescopic rod 22 is fixedly connected to a magnetic conductor 23. The magnetic conductor 23 is magnetically connected to a permanent magnet 24. A cover 210 is hinged to the bottom of the material discharge hole 28. A spring 211 is fixedly connected to the side of the cover 210. A scraping device 3 for scraping debris on the top of the sieve plate 26 is assembled inside the barrel 1, and a knocking device 4 for knocking the material collection bag 27 is assembled inside the barrel 1. An inlet 5 is provided at the top, and an outlet pipe 6 and a discharge pipe 7 are connected at the bottom and supported by the fixing frame 8. The motor 21 is installed on the fixing frame 8. The first telescopic rod 25 is connected to the top of the inner wall of the barrel 1 through a bearing. Its bottom is fixed to the sieve plate 26. The bottom of the sieve plate 26 is connected to the material collection bag 27. The material discharge hole 28 and the water filtering hole 29 are provided at the top. The sliding groove on the outer wall of the barrel 1 cooperates with the second telescopic rod 22 outside the first telescopic rod 25, the magnetic conductor 23 and the permanent magnet 24 to achieve magnetic connection. The opening and closing of the cover 210 at the bottom of the material discharge hole 28 is controlled by the spring 211. At the same time, the scraping device 3 and the knocking device 4 are equipped. The overall design realizes the solid-liquid separation, material collection and automatic control in the sewage pretreatment process, improving the treatment efficiency and the degree of automation. The bottom of the inner wall of the barrel 1 is rotatably connected to a sleeve 213 through a bearing. The material collection bag 27 is fixedly connected to the outer wall of the sleeve 213. The permanent magnet 24 is fixedly connected to the outer wall of the sieve plate 26. The bottom of the barrel 1 is connected to the sleeve 213 through a bearing. The material collection bag 27 is fixed to its outer wall, and the permanent magnet 24 is fixed to the outer wall of the sieve plate 26. Such a design enables the material collection bag 27 to rotate with the rotation of the sleeve 213, facilitating the centralized collection and discharge of materials. At the same time, the magnetic connection between the permanent magnet 24 and the magnetic conductor 23 is more stable, improving the reliability and the degree of automation of the device and further optimizing the material collection and treatment process. A crushing knife 212 is fixedly connected to the outer wall of the first telescopic rod 25. The first telescopic rod 25 extends upward through the barrel 1 movably. The first telescopic rod 25 is fixedly connected to the output end of the motor 21. The material collection bag 27 is elastic. The crushing knife 212 is fixedly connected to the outer wall of the first telescopic rod 25 and extends through the top of the barrel 1 movably to be connected to the output end of the motor 21. The material collection bag 27 is elastic. When the motor 21 drives the first telescopic rod 25 to rotate, the crushing knife 212 can crush large impurities on the sieve plate 26 to prevent the blockage of the material discharge hole 28. The elastic material collection bag 27 can better adapt to the shape and volume changes of materials, improving the collection efficiency. The overall crushing ability and material adaptability of the device are improved, making the pretreatment process more thorough.A chamfer for debris is provided at the top of the blanking hole 28. The size of the water filtering hole 29 is smaller than that of the blanking hole 28. The outlet at the bottom of the sleeve 213 is communicated with the top of the discharge pipe 7. The chamfer at the top of the blanking hole 28 facilitates the smooth entry of debris. The size of the water filtering hole 29 is smaller than that of the blanking hole 28, ensuring that fine particles in the sewage can pass through the water filtering hole 29 for filtration, while larger debris is discharged through the blanking hole 28. The outlet at the bottom of the sleeve 213 is communicated with the discharge pipe 7, enabling the collected materials to be directly discharged from the barrel body 1, realizing the efficient filtration of sewage and the orderly discharge of materials, optimizing the entire pretreatment process, and improving the working efficiency and treatment effect of the device.

[0025] When the above device is specifically used, sewage and medicine are poured in through the water inlet 5. The motor 21 is started to drive the first telescopic rod 25 to rotate. The first telescopic rod 25 drives the crushing knife 212 to crush large solid substances. At the same time, the first telescopic rod 25 drives the second telescopic rod 22 to rotate. The second telescopic rod 22 drives the magnetic conductor 23 to reciprocate up and down along the chute on the outer wall of the barrel body 1. The magnetic conductor 23 drives the permanent magnet 24 to rise. The rise of the permanent magnet 24 drives the sieve plate 26 to rise. When the sieve plate 26 rises, small debris enters the inside of the blanking hole 28. Since during the rising process of the sieve plate 26, the water flow causes the cover 210 hinged at the bottom of the sieve plate 26 to rotate counterclockwise around the hinge point, and the spring 211 is stretched, enabling small solid substances and debris to enter the inside of the receiving bag 27 through the blanking hole 28, preventing the accumulation of solid substances on the top of the sieve plate 26 and affecting sewage purification. After purification, the water outlet pipe 6 is opened to discharge water, and then the discharge pipe 7 is opened to let the solid substances and debris flow out. When the sieve plate 26 descends, the water flow and the spring 211 drive the cover 210 to block the blanking hole 28 again to prevent the debris from flowing back.

[0026] Example 2, see Figures 2-6, on the basis of the first embodiment, the scraping device 3 includes a first hydraulic chamber 31. The first hydraulic chamber 31 is fixedly connected to the outer wall of the first telescopic rod 25. One end of the piston inside the first hydraulic chamber 31 is slidably connected to a first hydraulic rod 32. The first hydraulic rod 32 is fixedly connected to the top of the sieve plate 26. A second hydraulic chamber 34 is fixedly connected to the top of the sieve plate 26. One end of the piston inside the second hydraulic chamber 34 is slidably connected to a second hydraulic rod 35. The top of the second hydraulic rod 35 is fixedly connected to a ratchet 36. The top of the sieve plate 26 is rotatably connected to a ferrule 37 through a bearing. A ratchet pawl 39 is hinged to the inner wall of the ferrule 37. A scraping block 38 is fixedly connected to the outer wall of the ferrule 37. During operation, the first hydraulic chamber 31 and the second hydraulic chamber 34 are communicated through a connecting hose 33. The hydraulic action drives the movement of the ratchet 36 and the ratchet pawl 39, driving the ferrule 37 to rotate, so that the scraping block 38 scrapes the debris on the top of the sieve plate 26, effectively preventing debris accumulation, ensuring the filtering performance of the sieve plate 26, and improving the stability and processing efficiency of the device. The ratchet 36 and the ratchet pawl 39 are meshed with each other. The bottom of the first hydraulic chamber 31 is fixedly connected to a connecting hose 33, and the end of the connecting hose 33 away from the first hydraulic chamber 31 is fixedly connected to the top of the second hydraulic chamber 34.

[0027] When the above device is specifically used, when the sieve plate 26 rises, it squeezes the first hydraulic rod 32. During the rising process of the first hydraulic rod 32, the pressure inside the first hydraulic chamber 31, the connecting hose 33, and the second hydraulic chamber 34 increases, driving the second hydraulic rod 35 to move to the left. The second hydraulic rod 35 drives the ratchet 36 to rotate counterclockwise. The ratchet 36 drives the ratchet pawl 39 and the ferrule 37 to rotate counterclockwise. The ferrule 37 drives the scraping block 38 to push the remaining solid substances and debris on the sieve plate 26 into the blanking hole 28, further improving the effect of collecting solid substances and debris. When the sieve plate 26 descends, the first hydraulic rod 32 descends, and the pressure inside the first hydraulic chamber 31, the connecting hose 33, and the second hydraulic chamber 34 decreases, causing the second hydraulic rod 35 to move to the right. The second hydraulic rod 35 drives the ratchet 36 to rotate clockwise. The ratchet 36 then slides on the outer wall of the ratchet pawl 39 and cannot drive the ferrule 37 to rotate, realizing that the ferrule 37 and the scraping block 38 are only driven to move when the sieve plate 26 rises.

[0028] Example 3, see Figures 1-7, on the basis of the first embodiment, the knocking device 4 includes a telescopic plate 41, the telescopic plate 41 is fixedly connected to the bottom of the sieve plate 26, a fixing plate 43 is fixedly connected to the front of the telescopic plate 41, a rotating rod 44 is rotatably connected to the back of the fixing plate 43 through a bearing, a circular gear 45 is fixedly connected to the outer wall of the rotating rod 44, an elastic telescopic rod 46 is fixedly connected to the side of the rotating rod 44, and a hemispherical knocking block 47 is fixedly connected to the front of the elastic telescopic rod 46. When it is necessary to knock the material receiving bag 27, the rotation of the rotating rod 44 drives the circular gear 45 to move, and the telescopic movement of the elastic telescopic rod 46 causes the hemispherical knocking block 47 to knock the material receiving bag 27, prompting the materials in the material receiving bag 27 to loosen and discharge, effectively preventing the materials from caking in the material receiving bag 27, improving the discharge efficiency of the materials, further improving the function of the device, and making it more efficient in the pretreatment process. A rack 42 is fixedly connected to the bottom of the sieve plate 26, and the circular gear 45 meshes with the rack 42.

[0029] When the above-mentioned device is in specific use, when the sieve plate 26 rises, it drives the rack 42 to rise, the rack 42 drives the circular gear 45 to rotate, the rack 42 drives the rotating rod 44 to rotate, the rotating rod 44 drives the elastic telescopic rod 46 to rotate, and the elastic telescopic rod 46 drives the hemispherical knocking block 47 to rotate to knock the material receiving bag 27. When the material receiving bag 27 rises, the material receiving bag 27 deforms. Through the elastic telescopic rod 46 and the hemispherical knocking block 47, the deformation of the material receiving bag 27 can be well adapted, and at the same time, the material receiving bag 27 is knocked, so that the solid substances and fragments inside the material receiving bag 27 are better accumulated at the bottom of the inner wall of the barrel 1.

[0030] When the above-mentioned device is in specific use, as described above, the above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A chemical sewage pretreatment device with ozone oxidation, comprising a barrel body, a water inlet is assembled at the top of the barrel body, a water outlet pipe is fixedly connected to the bottom of the barrel body, a discharge pipe is fixedly connected to the bottom of the barrel body, and a fixing frame is fixedly connected to the bottom of the barrel body; Characterized in that, A motor is fixedly connected to the top of the fixing frame, the top inner wall of the barrel body is rotatably connected by a bearing to a first telescopic rod, a sieve plate is fixedly connected to the bottom of the first telescopic rod, a collection bag is fixedly connected to the bottom of the sieve plate, a material discharge hole is opened at the top of the sieve plate, a water filtering hole is opened at the top of the sieve plate, a sliding groove is opened on the outer wall of the barrel body, a second telescopic rod is fixedly connected to the outer wall of the first telescopic rod, a magnetic conductor is fixedly connected to the bottom of the second telescopic rod, the magnetic conductor is magnetically connected to a permanent magnet, a cover is hinged at the bottom of the material discharge hole, a spring is fixedly connected to the side of the cover, a scraping device for scraping debris on the top of the sieve plate is assembled inside the barrel body, and a knocking device for knocking the collection bag is assembled inside the barrel body.

2. The chemical sewage pretreatment device by ozone oxidation according to claim 1, characterized in that, A sleeve is rotatably connected by a bearing to the bottom inner wall of the barrel body, the collection bag is fixedly connected to the outer wall of the sleeve, and the permanent magnet is fixedly connected to the outer wall of the sieve plate.

3. The chemical sewage pretreatment device by ozone oxidation according to claim 1, characterized in that, A crushing knife is fixedly connected to the outer wall of the first telescopic rod, the first telescopic rod extends upward through the barrel body, the first telescopic rod is fixedly connected to the output end of the motor, and the collection bag is elastic.

4. An ozone oxidation chemical sewage pretreatment device according to claim 2, characterized in that, A chamfer for debris is opened at the top of the material discharge hole, the size of the water filtering hole is smaller than the size of the material discharge hole, and the outlet at the bottom of the sleeve is communicated with the top of the discharge pipe.

5. An ozone oxidation chemical sewage pretreatment device according to claim 1, characterized in that, The scraping device includes a first hydraulic chamber, the first hydraulic chamber is fixedly connected to the outer wall of the first telescopic rod, a first hydraulic rod is slidably connected to a piston at one end inside the first hydraulic chamber, the first hydraulic rod is fixedly connected to the top of the sieve plate, a second hydraulic chamber is fixedly connected to the top of the sieve plate, a second hydraulic rod is slidably connected to a piston at one end inside the second hydraulic chamber, a ratchet is fixedly connected to the top of the second hydraulic rod, a ferrule is rotatably connected by a bearing to the top of the sieve plate, a ratchet pawl is hinged to the inner wall of the ferrule, and a scraping block is fixedly connected to the outer wall of the ferrule.

6. The chemical sewage pretreatment device by ozone oxidation according to claim 5, characterized in that The ratchet and the ratchet pawl are meshed with each other, a connecting hose is fixedly connected to the bottom of the first hydraulic chamber, and the end of the connecting hose away from the first hydraulic chamber is fixedly connected to the top of the second hydraulic chamber.

7. A chemical sewage pretreatment device by ozone oxidation according to claim 1, characterized in that, The knocking device includes a telescopic plate, the telescopic plate is fixedly connected to the bottom of the sieve plate, a fixing plate is fixedly connected to the front of the telescopic plate, a rotating rod is rotatably connected by a bearing to the back of the fixing plate, a circular gear is fixedly connected to the outer wall of the rotating rod, an elastic telescopic rod is fixedly connected to the side of the rotating rod, and a hemispherical knocking block is fixedly connected to the front of the elastic telescopic rod.

8. A chemical sewage pretreatment device by ozone oxidation according to claim 7, characterized in that, A rack is fixedly connected to the bottom of the sieve plate, and the circular gear is meshed with the rack.

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