Three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor

Abstract

The invention discloses a three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor, and belongs to the technical field of wastewater treatment devices, the three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor comprises a decomposition treatment mechanism, the decomposition treatment mechanism comprises a decomposition box, the decomposition box is provided with a first motor, an output shaft of the first motor extends into a rotating groove in a side plate through a cam, and the output shaft of the first motor is provided with a second motor; a driving wheel fixed to an output shaft of the first motor is arranged between the cams, the outer wall of the driving wheel is in transmission connection with a driven wheel arranged in the telescopic cylinder through a conveying belt, and the driving wheel and the driven wheel are connected through a tensioning assembly. The outer wall of the cam abuts against and is attached to a lifting block fixed to the top of the telescopic cylinder. The technical problems that a traditional sewage treatment process cannot effectively remove suspended garbage sundries, secondary pollution is brought to a receiving water body, and the processing and purifying process of electrode electro-catalysis wastewater treatment is directly affected can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment devices, and in particular relates to a three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor. Background Art

[0002] The three-dimensional electrode forms a third electrode by filling granular materials between the cathode and anode of the traditional two-dimensional electrolysis system, significantly increasing the reaction interface area and mass transfer efficiency. The core principle of electrocatalytic oxidation for wastewater treatment is to generate strong oxidants through electrochemical reactions, directly or indirectly decomposing organic pollutants in the wastewater. Direct oxidation is the direct loss of electrons and oxidation of organic molecules in the wastewater on the anode surface, accompanied by the evolution of oxygen. This process has high energy consumption and excessive use should be avoided. Indirect oxidation is the generation of strong oxidants such as hydroxyl radicals and high-valent metal ions by the anode reaction. These active substances further oxidize the organic pollutants in the wastewater. This method is more efficient and is the mainstream application of electrocatalytic oxidation.

[0003] However, during the electrode electrocatalytic wastewater treatment process, traditional sewage treatment processes cannot effectively remove suspended garbage and debris, causing secondary pollution to the receiving water body and directly affecting the processing process of electrode electrocatalytic wastewater treatment. At the same time, when the filling particles between the positive and negative plates are used as reaction media, if the filling particles are in a larger storage box, although there is sufficient contact area with the wastewater, the adsorption efficiency is poor due to the small number. When the filling particles are in a smaller storage box, the particles cannot fully contact with the wastewater due to congestion, which reduces the adsorption efficiency, thereby reducing the purification quality and is not conducive to improving the water quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor to solve the technical problem that traditional sewage treatment processes cannot effectively remove suspended garbage and debris, causing secondary pollution to the receiving water body and directly affecting the processing process of electrode electrocatalytic wastewater treatment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: Three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor, comprising: A decomposition processing mechanism includes a decomposition box, on which a first motor is mounted, wherein the output shaft of the first motor extends to a rotation groove on a side plate via a cam, and a driving wheel fixed to the output shaft of the first motor is provided between the cams, wherein the outer wall of the driving wheel is connected to a driven wheel placed inside the telescopic cylinder via a conveyor belt transmission, and the driving wheel and the driven wheel are connected via a tensioning assembly; The outer wall of the cam is in contact with the lifting block fixed on the top of the telescopic cylinder. Cross beams are fixedly installed at both ends of the lifting block. The bottom of the cross beam is connected to an L-shaped bent plate placed on the inner wall of the decomposition box through a first spring, and the outer wall of the cross beam is connected to a slide groove along the height direction of the L-shaped bent plate. Slopes are provided on both sides of the top of the lifting block.

[0006] Furthermore, a filter is provided on the edge of the outer wall of the telescopic cylinder, and activated carbon particles are filled inside the filter. Both ends of the telescopic cylinder are designed with movable telescopic structures in the horizontal direction. The movable shaft on the driven wheel is provided with a baffle fixed to the bottom of the inner wall of the telescopic cylinder. A stirring rod is provided on the outer wall of the movable shaft and is placed inside the telescopic cylinder. One end of the movable shaft is fixedly connected to the first telescopic rod through a reciprocating screw, and the movable part of the first telescopic rod extends to the side wall of the telescopic cylinder.

[0007] Furthermore, a first slider is spirally driven on the reciprocating screw, and movable rods fixedly connected to the side walls of the telescopic cylinder are installed at both ends of the first slider, and the movable rods are connected to the limiting groove along the length direction of the outer wall of the first telescopic rod.

[0008] Furthermore, a second telescopic rod is detachably mounted on one end of the stirring rod, the second telescopic rod is vertically arranged to the stirring rod, and one end of the second telescopic rod extends to the side wall of the telescopic tube, and the outer walls of the first telescopic rod and the second telescopic rod are both provided with an annular groove placed on the telescopic tube.

[0009] Furthermore, positive plates and negative plates connected to the electrode power supply are respectively provided at both ends of the inner wall of the decomposition box, the telescopic cylinder and the bottom of the inner wall of the decomposition box are connected by a third telescopic rod, and a strip opening is provided on the telescopic cylinder for connecting with the conveyor belt.

[0010] Furthermore, the tensioning assembly includes a shell fixed to the inner wall extension section of the decomposition box, a fixed plate is installed inside the shell, a second slider is installed on the fixed plate through a second spring, and the second slider is movably connected to an adjusting wheel that fits the conveyor belt.

[0011] Furthermore, it also includes a pretreatment mechanism, which is connected to the decomposition treatment mechanism through a conduit fixed on the pump body. The pretreatment mechanism includes a treatment box, and a second motor is fixedly installed on the outer wall of the treatment box. The output shaft of the second motor extends to the sprocket. The sprockets are connected by chain transmission, and a guide groove is provided on the inner wall of the treatment box in the direction of chain movement.

[0012] Furthermore, bearings are fixedly installed at the nodes on the chain, and a rotating shaft fixed to the third slider is movably connected inside the bearing. The outer wall of the third slider is movably connected in a rectangular frame. The fixed rod at one end of the rectangular frame extends to the side wall of the processing box, and the fixed rod at the other end extends to the partition on the inner wall of the processing box. The fixed rod is connected to a sliding track along the height direction of the side wall and the partition of the processing box.

[0013] Furthermore, support rods are fixedly installed on the outer wall of the third slider with equal distance and horizontal distribution. The support rods are staggered with the guide rollers at the partition opening. The guide rollers are distributed at the opening on the frame with a downward tilt. A collection box is provided under the guide roller and is placed inside the processing box. The collection box is designed as a movable pull-out structure, and an installation port is provided on the collection box for connecting with the conduit.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In the present invention, the pretreatment mechanism can effectively clean the garbage impurities in the wastewater, thereby ensuring the stable progress of the subsequent electrode electrocatalytic treatment work. After the second motor is started, it can drive the sprocket to rotate. Under the transmission action of the chain, the chain circulates in the guide groove. At the same time, the rotating shaft on the bearing cooperates with the third slider in the rectangular frame. Since the rotating shaft is movably connected to the bearing, the third slider can move horizontally in the rectangular frame, and the fixed rod on the rectangular frame can play a limiting and guiding role in its up and down movement, thereby ensuring that the third slider is always in a horizontal state during the rotation movement. Cooperating with the staggered guide rollers, through continuous reverse rotation, the garbage in the wastewater can be continuously transported to the guide rollers, and the automatic discharge operation is completed by the guide rollers, and finally the garbage is centrally processed through the collection box. The design is reasonable, the automation performance is strong, and the garbage can be effectively discharged automatically.

[0015] (2) In the present invention, the activated carbon particles between the positive plate and the negative plate can increase the reaction interface area and mass transfer efficiency. After the first motor is started, it can drive the rotation of the cam and the driving wheel. The rotation of the cam, combined with the lifting block on the first spring, can convert the rotation of the cam into the up and down movement of the lifting block, and the lifting block can drive the synchronous movement of the telescopic cylinder, so that the particles in the telescopic cylinder are fully in contact with the wastewater during the up and down movement, thereby improving the reaction rate. The slope on the lifting block can reduce the applied pressure by increasing the area, thereby reducing friction damage and increasing the service life of the device. The first spring on the L-shaped bending plate not only provides corresponding support force to the structural member, but also enables the crossbeam on the lifting block to play a corresponding limiting and guiding role during the up and down movement, thereby preventing the transmission member from deviating from its position during the movement. During the rotation of the driving wheel, under the transmission connection of the conveyor belt, the stirring rod on the driven wheel can be driven to rotate synchronously, thereby increasing the contact area between the activated carbon particles and the wastewater, facilitating the adsorption of some pollutants, and enhancing the treatment capacity of the device.

[0016] (3) In the present invention, since the driven wheel is movably connected to the baffle on the inner wall of the telescopic cylinder, the telescopic cylinder can drive the synchronous movement of the driven wheel when it moves up and down. In order to ensure the tension of the conveyor belt on the driven wheel, the second spring cooperates with the adjusting wheel connected to the second slider to effectively ensure the effective transmission of power, prevent the conveyor from being separated, and ensure the safety of the device.

[0017] (4) In the present invention, during the rotation of the stirring rod, the reciprocating screw on the movable shaft can rotate synchronously, so that the first slider drives the movable rod to move back and forth in the horizontal direction. Since one end of the movable rod is fixed on the side wall of the telescopic cylinder, the telescopic cylinder with a movable telescopic structure can adaptably expand or reduce the internal volume of the telescopic cylinder, so that the activated carbon particles are always in a relatively reasonable volume range. During the rotation of the second telescopic rod driven by the stirring rod, it can ensure that the activated carbon particles are fully in contact with the wastewater, and can also keep the activated carbon particles in a reasonable spatial range, thereby effectively utilizing space resources, efficiently degrading difficult-to-treat organic pollutants, and improving current efficiency and treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the structure of the three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor of the present invention; Figure 2 This is a front view of the three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor of the present invention; Figure 3 It is a structural diagram of the decomposition box of the present invention; Figure 4 This is a schematic diagram of the connection between the cam and the lifting block of the present invention; Figure 5 It is a structural schematic diagram of the tensioning assembly of the present invention; Figure 6 It is a schematic diagram of the interior of the telescopic cylinder of the present invention; Figure 7 It is a structural schematic diagram of the processing box of the present invention; Figure 8 It is a schematic diagram of the connection between the second slider and the rectangular frame of the present invention.

[0020] Reference numerals: 1, decomposition mechanism; 2, decomposition box; 3, first motor; 4, cam; 5, driving wheel; 6, conveyor belt; 7, telescopic cylinder; 8, driven wheel; 9, tensioning assembly; 10, lifting block; 11, crossbeam; 12, first spring; 13, L-shaped bending plate; 14, slope; 15, filter screen; 16, activated carbon granules; 17, stirring rod; 18, reciprocating screw; 19, first telescopic rod; 20, first slider; 21, movable rod; 22, second telescopic rod; 23. Third telescopic rod; 24. Housing; 25. Fixed plate; 26. Second spring; 27. Second slider; 28. Adjusting wheel; 29. ​​Pretreatment mechanism; 30. Pump body; 31. Treatment box; 32. Second motor; 33. Sprocket; 34. Chain; 35. Bearing; 36. Third slider; 37. Rotating shaft; 38. Rectangular frame; 39. Fixed rod; 40. Partition; 41. Support rod; 42. Guide roller; 43. Collecting box; 44. Positive plate; 45. Negative plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Reference Manual Figure 1 -Attached Figure 8As shown, a three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor comprises: a decomposition and treatment mechanism 1, which comprises a decomposition box 2, on which a first motor 3 is mounted, the output shaft of the first motor 3 extending to a rotating groove on a side plate through a cam 4, a driving wheel 5 fixed to the output shaft of the first motor 3 is provided between the cams 4, the outer wall of the driving wheel 5 is connected to a driven wheel 8 placed inside a telescopic cylinder 7 through a conveyor belt 6, and the driving wheel 5 and the driven wheel 8 are connected by a tensioning assembly 9; The pretreatment mechanism 29 can effectively clean the garbage impurities in the wastewater, thereby ensuring the stable progress of the subsequent electrode electrocatalytic treatment work. After the second motor 32 is started, it can drive the sprocket 33 to rotate. Under the transmission action of the chain 34, the chain 34 circulates in the guide groove. At the same time, the rotating shaft 37 on the bearing 35 cooperates with the third slider 36 in the rectangular frame 38. Since the rotating shaft 37 is movably connected to the bearing 35, the third slider 36 can move horizontally in the rectangular frame 38, and the fixed rod 39 on the rectangular frame 38 can play a limiting and guiding role for its up and down movement, thereby ensuring that the third slider 36 is always in a horizontal state during the rotational movement. Cooperating with the staggered guide rollers 42, through continuous reverse rotation, the garbage in the wastewater can be continuously transported to the guide rollers 42, and the automatic discharge operation is completed through the guide rollers 42, and finally centralized processing is carried out through the collection box 43. The design is reasonable, the automation performance is strong, and the garbage can be effectively discharged automatically.

[0023] The outer wall of the cam 4 is in contact with the lifting block 10 fixed on the top of the telescopic cylinder 7. A crossbeam 11 is fixedly installed at both ends of the lifting block 10. The bottom of the crossbeam 11 is connected to an L-shaped bent plate 13 placed on the inner wall of the decomposition box 2 through a first spring 12, and the outer wall of the crossbeam 11 is connected to a slide groove along the height direction of the L-shaped bent plate 13. Slopes 14 are provided on both sides of the top of the lifting block 10.

[0024] Specifically, when the output shaft of the first motor 3 rotates, it can simultaneously drive the driving wheel 5 and the cam 4 to rotate. The rotation of the cam 4 cooperates with the lifting block 10 on the spring assembly to convert the rotational motion into linear motion, so that the lifting block 10 maintains vertical up and down movement, which can drive the synchronous movement of the telescopic cylinder 7. At the same time, the rotation of the driving wheel 5 can transmit power to the stirring rod 17 and rotate it under the transmission connection action of the conveyor belt 6, so that the activated carbon particles 16 can fully contact the wastewater, and the telescopic cylinder 7 moving up and down can be in the wastewater at different depths, thereby further improving the purification quality.

[0025] The third telescopic rod 23 at the bottom of the telescopic cylinder 7 can provide corresponding supporting force and prevent position deviation during movement. The third telescopic rod 23 adopts a symmetrical design mechanism around the center of the telescopic cylinder 7 to ensure the balance of the supporting force.

[0026] The activated carbon particles 16 between the positive plate 44 and the negative plate 45 can increase the reaction interface area and mass transfer efficiency. After the first motor 3 is started, it can drive the rotation of the cam 4 and the driving wheel 5. The rotation of the cam 4, in conjunction with the lifting block 10 on the first spring 12, can convert the rotation of the cam 4 into the up and down movement of the lifting block 10, and the lifting block 10 can drive the synchronous movement of the telescopic cylinder 7, so that the particles in the telescopic cylinder 7 are fully in contact with the wastewater during the up and down movement, thereby increasing the reaction rate. The slope 14 on the lifting block 10 can reduce the reaction area by increasing the reaction area. Use pressure, thereby reducing friction damage and increasing the service life of the device. The first spring 12 on the L-shaped bending plate 13 not only provides corresponding supporting force to the structural parts, but also enables the crossbeam 11 on the lifting block 10 to play a corresponding limiting and guiding role during the up and down movement, thereby preventing the transmission parts from deviating from their position during the movement. During the rotation of the driving wheel 5, under the transmission connection action of the conveyor belt 6, the stirring rod 17 on the driven wheel 8 can be driven to rotate synchronously, thereby increasing the contact area between the activated carbon particles 16 and the sewage and wastewater, facilitating the adsorption of some pollutants, and enhancing the processing capacity of the device.

[0027] A filter screen 15 is provided on the edge of the outer wall of the telescopic cylinder 7, and activated carbon particles 16 are filled inside the filter screen 15. Both ends of the telescopic cylinder 7 are designed with movable telescopic structures in the horizontal direction. The movable shaft on the driven wheel 8 is provided with a baffle fixed to the bottom of the inner wall of the telescopic cylinder 7. A stirring rod 17 is provided on the outer wall of the movable shaft and is placed inside the telescopic cylinder 7. One end of the movable shaft is fixedly connected to the first telescopic rod 19 through a reciprocating screw 18, and the movable part of the first telescopic rod 19 extends to the side wall of the telescopic cylinder 7.

[0028] A first slider 20 is spirally transmitted on the reciprocating screw 18, and both ends of the first slider 20 are equipped with movable rods 21 fixedly connected to the side walls of the telescopic cylinder 7. The movable rod 21 is connected to the limiting groove along the length direction of the outer wall of the first telescopic rod 19. A second telescopic rod 22 is detachably installed at one end of the stirring rod 17. The second telescopic rod 22 is vertically arranged with the stirring rod 17, and one end of the second telescopic rod 22 extends to the side wall of the telescopic cylinder 7. The outer walls of the first telescopic rod 19 and the second telescopic rod 22 are both provided with annular grooves placed on the telescopic cylinder 7.

[0029] Since the driven wheel 8 is movably connected to the baffle on the inner wall of the telescopic cylinder 7, the telescopic cylinder 7 can drive the synchronous movement of the driven wheel 8 when it moves up and down. In order to ensure the tension of the conveyor belt 6 on the driven wheel 8, the adjusting wheel 28 connected to the second slider 27 on the second spring 26 can effectively ensure the effective transmission of power, prevent the conveyor from being separated, and ensure the safety of the device.

[0030] The extended end of one end of the movable rod 21 is connected to a limit groove arranged in the length direction of the first telescopic rod 19, so that the movable rod 21 can provide a corresponding limit guiding effect during the horizontal movement process, and the movable parts at one end of the first telescopic rod 19 and the second telescopic rod 22 both contact and fit on the side wall of the telescopic cylinder 7. On the one hand, this can ensure the free movement of both ends of the telescopic cylinder 7, and on the other hand, the rotating sleeve in the first telescopic rod 19 can provide corresponding supporting force for the reciprocating screw 18, and can ensure that the reciprocating screw 18 can rotate freely but the fixed part of the first telescopic rod 19 remains relatively stationary. The annular groove on the side wall of the telescopic cylinder 7 can allow the second telescopic rod 22 to rotate freely, thereby allowing the activated carbon particles 16 to be dispersed and fully contacted with the wastewater.

[0031] During the rotation of the stirring rod 17, the reciprocating screw 18 on the movable shaft can rotate synchronously, so that the first slider 20 drives the movable rod 21 to move back and forth in the horizontal direction. Since one end of the movable rod 21 is fixed on the side wall of the telescopic cylinder 7, the telescopic cylinder 7 with the movable telescopic structure can adaptively expand or reduce the internal volume of the telescopic cylinder 7, so that the activated carbon particles 16 are always in a relatively reasonable volume range. The stirring rod 17 drives the second telescopic rod 22 to rotate, which can not only ensure that the activated carbon particles 16 are in full contact with the wastewater, but also ensure that the activated carbon particles 16 are in a reasonable spatial range, thereby effectively utilizing space resources, efficiently degrading difficult-to-treat organic pollutants, and improving current efficiency and treatment effects.

[0032] Specifically, a positive plate 44 and a negative plate 45 connected to the electrode power supply are respectively provided at both ends of the inner wall of the decomposition box 2. The telescopic cylinder 7 and the bottom of the inner wall of the decomposition box 2 are connected by a third telescopic rod 23, and a strip opening connected to the conveyor belt 6 is opened on the telescopic cylinder 7. The tensioning assembly 9 includes a shell 24 fixed to the extension section of the inner wall of the decomposition box 2, and a fixed plate 25 is installed inside the shell 24. A second slider 27 is installed on the fixed plate 25 through a second spring 26, and an adjusting wheel 28 that fits the conveyor belt 6 is movably connected to the second slider 27.

[0033] The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor also includes a pretreatment mechanism 29, which is connected to the decomposition treatment mechanism 1 through a conduit fixed on the pump body 30. The pretreatment mechanism 29 includes a treatment box 31, and a second motor 32 is fixedly installed on the outer wall of the treatment box 31. The output shaft of the second motor 32 extends to the sprocket 33, and the sprockets 33 are connected by a chain 34, and the movement direction of the chain 34 is provided with a guide groove placed on the inner wall of the treatment box 31.

[0034] A bearing 35 is fixedly installed at the node on the chain 34, and a rotating shaft 37 fixed on the third slider 36 is movably connected inside the bearing 35. The outer wall of the third slider 36 is movably connected in the rectangular frame 38. The fixed rod 39 at one end of the rectangular frame 38 extends to the side wall of the processing box 31, and the fixed rod 39 at the other end extends to the partition 40 on the inner wall of the processing box 31. The fixed rod 39 is connected to a sliding track along the height direction of the side wall of the processing box 31 and the partition 40.

[0035] Compared with the prior art, which directly filters and absorbs through a pushing mechanism and a screen that moves up and down, although it can also achieve the technical effect of continuously removing garbage, it is necessary to set up an additional power mechanism to push the garbage onto the guide roller 42. Even if the screen is set at an angle, due to the relatively large friction resistance, it still needs to be pushed onto the guide roller 42 with the help of a power mechanism. Therefore, the cost design is relatively high and extra resources are wasted.

[0036] The present invention uses a separate driving source and a vertical conveying mechanism to transport suspended garbage to the guide roller 42 through the support rod 41, and can automatically realize the collection work. Through the rotational force of the guide roller 42 and the weight of the material, the garbage can be directly collected, and continuous garbage removal can be achieved, with good cleaning effect.

[0037] Support rods 41 are fixedly installed on the outer wall of the third slider 36 and are distributed horizontally at equal intervals. The support rods 41 are staggered with the guide rollers 42 at the opening of the partition 40. The guide rollers 42 are distributed at the opening on the frame at a downward tilt. A collection box 43 is provided below the guide rollers 42 and is placed inside the processing box 31. The collection box 43 is designed as a movable pull-out structure, and an installation port is provided on the collection box 43 for connecting with the conduit.

[0038] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor, characterized in that: include: A decomposition box (2), wherein two ends of the inner wall of the decomposition box (2) are respectively provided with a positive electrode plate (44) and a negative electrode plate (45) connected to an electrode power supply; A decomposition processing mechanism (1), the decomposition processing mechanism (1) includes a first motor (3) on a decomposition box (2), the output shaft of the first motor (3) extends to a rotation groove on a side plate through a cam (4), a driving wheel (5) fixed to the output shaft of the first motor (3) is provided between the cams (4), the outer wall of the driving wheel (5) is connected to a driven wheel (8) arranged inside a telescopic cylinder (7) through a conveyor belt (6), and the driving wheel (5) and the driven wheel (8) are connected through a tensioning assembly (9); The outer wall of the cam (4) abuts against and fits against a lifting block (10) fixed on the top of the telescopic cylinder (7). A crossbeam (11) is fixedly installed at both ends of the lifting block (10). The bottom of the crossbeam (11) is connected to an L-shaped bending plate (13) placed on the inner wall of the decomposition box (2) through a first spring (12), and the outer wall of the crossbeam (11) is connected to a slide groove along the height direction of the L-shaped bending plate (13). Slopes (14) are provided on both sides of the top of the lifting block (10).

2. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 1, characterized in that: A filter screen (15) is provided on the edge of the outer wall of the telescopic cylinder (7), and activated carbon particles (16) are filled inside the filter screen (15). Both ends of the telescopic cylinder (7) are designed with a movable telescopic structure in the horizontal direction. The movable shaft on the driven wheel (8) is provided with a baffle fixed to the bottom of the inner wall of the telescopic cylinder (7). A stirring rod (17) is provided on the outer wall of the movable shaft and is placed inside the telescopic cylinder (7). One end of the movable shaft is fixedly connected to a first telescopic rod (19) through a reciprocating screw (18), and the movable portion of the first telescopic rod (19) extends to the side wall of the telescopic cylinder (7).

3. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 2, characterized in that: The reciprocating screw (18) is spirally driven with a first slider (20), and both ends of the first slider (20) are equipped with movable rods (21) fixedly connected to the side wall of the telescopic cylinder (7), and the movable rods (21) are connected to the limiting groove along the length direction of the outer wall of the first telescopic rod (19).

4. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 2, characterized in that: A second telescopic rod (22) is detachably mounted on one end of the stirring rod (17). The second telescopic rod (22) is vertically arranged with respect to the stirring rod (17), and one end of the second telescopic rod (22) extends to the side wall of the telescopic cylinder (7). The outer walls of the first telescopic rod (19) and the second telescopic rod (22) are both provided with an annular groove disposed on the telescopic cylinder (7).

5. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 1, characterized in that: The telescopic cylinder (7) and the bottom of the inner wall of the decomposition box (2) are connected via a third telescopic rod (23), and a strip-shaped opening is provided on the telescopic cylinder (7) for connecting with the conveyor belt (6).

6. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 1, characterized in that: The tensioning assembly (9) comprises a housing (24) fixed to an inner wall extension section of the decomposition box (2), a fixing plate (25) being installed inside the housing (24), a second slider (27) being installed on the fixing plate (25) via a second spring (26), and an adjusting wheel (28) being movably connected to the second slider (27) and being in contact with the conveyor belt (6).

7. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 1, characterized in that: The invention also includes a pre-treatment mechanism (29), wherein the pre-treatment mechanism (29) and the decomposition treatment mechanism (1) are connected via a conduit fixed on the pump body (30), and the pre-treatment mechanism (29) includes a treatment box (31), and a second motor (32) is fixedly mounted on the outer wall of the treatment box (31), and the output shaft of the second motor (32) extends to the sprocket (33), and the sprockets (33) are connected to each other through a chain (34), and a guide groove is provided on the inner wall of the treatment box (31) in the direction of movement of the chain (34).

8. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 7, characterized in that: A bearing (35) is fixedly installed at a node on the chain (34), and a rotating shaft (37) fixed on a third slider (36) is movably connected inside the bearing (35). The outer wall of the third slider (36) is movably connected in a rectangular frame (38). A fixed rod (39) at one end of the rectangular frame (38) extends to the side wall of the processing box (31), and a fixed rod (39) at the other end extends to a partition (40) on the inner wall of the processing box (31). The fixed rod (39) is connected to a sliding track along the height direction of the side wall of the processing box (31) and the partition (40).

9. The three-dimensional gradient electrode electrocatalytic oxidation wastewater treatment reactor according to claim 8, characterized in that: The outer wall of the third slider (36) is fixedly mounted with support rods (41) that are equidistantly and horizontally distributed. The support rods (41) and the guide rollers (42) at the opening of the partition (40) are staggered. The guide rollers (42) are tilted downward and distributed at the opening on the frame. A collection box (43) is provided below the guide rollers (42) and is placed inside the processing box (31). The collection box (43) is designed as a movable pull-out structure, and a mounting port for connecting with a conduit is provided on the collection box (43).

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