Combined air floatation equipment for sewage treatment

Abstract

The invention discloses combined air flotation equipment for sewage treatment, and belongs to the technical field of sewage treatment.The combined air flotation equipment comprises a filter box, an opening is formed in the upper end of the filter box, a cover plate is rotationally connected into the opening, a drainage pipe is arranged on the lower side of one end of the filter box, and a groove body is arranged on the upper side of the end, away from the drainage pipe, of the filter box. A T-shaped rod is pulled to move upwards, a spring is compressed, then a pull rod is pulled to drive a sliding column to move backwards, a leaky bucket is put into a filter box, a rectangular column at the front end of the leaky bucket is inserted into a rectangular groove of a sleeve on the front side, then the pull rod is pushed to push the sliding column to move forwards, and the sliding column pushes the other sleeve to reset. And a rectangular column at the rear end of the leaky bucket enters a rectangular groove of a sleeve on the rear side, then a T-shaped rod is loosened, a spring elastically stretches to push the lower end of the T-shaped rod to enter a clamping hole of a sliding column, the effect of limiting the sliding column is achieved, the leaky bucket is conveniently and rapidly disassembled, assembled and cleaned by arranging a connecting assembly, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment, and particularly relates to a combined air flotation equipment for sewage treatment. BACKGROUND

[0002] The sewage treatment process is an economic, reasonable, scientific and effective process method for urban domestic sewage and industrial wastewater. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical industry, environmental protection, urban landscape, medical treatment, catering and other fields.

[0003] The existing technology has the following problems: 1. The existing device connects the leakage barrel and the sleeve through bolts, and the leakage barrel cannot be quickly disassembled and fixed when the leakage barrel needs to be cleaned; 2. The existing device cannot push the impurities floating on the water surface to the leakage barrel, and the leakage barrel rotating has poor impurity collection effect; 3. The existing device is not convenient for disassembling and cleaning the filter plate, and the filter plate is easy to be blocked after long-term use. SUMMARY

[0004] To solve the problems in the background art, the application provides a combined air flotation equipment for sewage treatment, which has the characteristics of facilitating quick disassembly and fixation of the leakage barrel.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a combined air flotation equipment for sewage treatment, comprising a filter box, an opening is arranged at the upper end of the filter box, a cover plate is rotatably connected in the opening, a drain pipe is arranged at the lower side of one end of the filter box, a groove is arranged at the upper side of the end of the filter box away from the drain pipe, a filter plate is arranged in the groove, a jet mechanism is arranged at the lower end inside the filter box, two sleeves are arranged at the upper side inside the filter box, a leakage barrel is arranged between the two sleeves, a plurality of funnels are arranged on the leakage barrel, a motor one is arranged at the corresponding position of the sleeve on the upper side of the front end of the filter box, and the leakage barrel and the sleeve are connected through a connecting assembly.

[0006] Further, the connecting assembly comprises a fixed frame, a slide column, a rectangular groove, a rectangular column, a pull rod, a T-shaped rod, a limiting plate, a spring and a clamping hole, wherein the leakage barrel is provided with a rectangular column at both ends, the two sleeves are provided with a rectangular groove corresponding to the rectangular column at one end, the rear sleeve is provided with a slide column at the rear end, the slide column is provided with a pull rod at the rear end, the filter box is provided with a fixed frame at the corresponding position of the slide column at the rear end, the fixed frame is provided with a T-shaped rod at the upper end, the T-shaped rod is provided with a limiting plate on the surface, the spring is arranged between the limiting plate and the fixed frame on the surface of the T-shaped rod, and the slide column is provided with a clamping hole corresponding to the T-shaped rod.

[0007] Further, when the side edge of the pull rod contacts the side edge of the fixed frame, the clamping hole on the slide column corresponds to the position of the lower end of the T-shaped rod, and the upper end of the T-shaped rod protrudes from the side edge of the fixed frame on both sides.

[0008] Furthermore, a bearing rotating seat is provided between the sleeve and the sliding column on the rear side, and sliding holes corresponding to the sliding column are provided in both the fixed frame and the filter box.

[0009] Furthermore, a material pushing assembly is provided inside the filter box at a position corresponding to the strainer. The material pushing assembly includes a second motor, a main shaft, a secondary shaft, a connecting shaft, pulleys, a connecting belt, a first gear, a second gear, and push plates. The second motor is located on one side of the front end of the filter box, the main shaft is located at the output end of the second motor, the secondary shaft is located on one side of the main shaft, the second gear is located at the rear end of the secondary shaft, the connecting shaft is located at a position corresponding to the second gear at the rear end of the filter box, the first gear is located on the connecting shaft at a position corresponding to the second gear, pulleys are provided on both the connecting shaft and the main shaft, a connecting belt is provided between the two pulleys, and several push plates are provided on both the main shaft and the secondary shaft.

[0010] Furthermore, the push plate is provided with several through holes, and the push plates on the main shaft and the auxiliary shaft are staggered from each other with the sieve bucket.

[0011] Furthermore, bearing rotating seats are provided between the main shaft and the filter box, between the secondary shaft and the filter box, and between the connecting shaft and the filter box, and adjacent push plates are at a 120-degree angle.

[0012] Furthermore, the longitudinal length of the push plate is the same as the longitudinal width inside the filter box, and the push plate is welded to the main shaft and to the auxiliary shaft by pressure welding.

[0013] Furthermore, the upper end of the tank is provided with top plates on both sides, and a handle is provided at the upper end of the top plate. The filter plate is connected to the top plate by a connecting rod. Positioning rods are provided on both sides of the lower end of the top plate. Positioning holes corresponding to the positioning rods are provided at the upper end of the tank. Supports are provided at both ends of the tank at positions corresponding to the filter plate.

[0014] Furthermore, when the lower end of the top plate contacts the upper end of the tank, the lower end of the filter plate contacts the upper end of the support, and the lower end of the positioning rod is set as an arc-shaped structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of a connecting component, allows for easy installation of the filter bucket. Pulling the T-shaped rod upward compresses the spring, which in turn pulls the pull rod to move the sliding column backward. The filter bucket is then placed into the filter box, and the rectangular column at the front end of the filter bucket is inserted into the rectangular groove of the front sleeve. Pushing the pull rod then moves the sliding column forward, causing the sliding column to push the other sleeve back to its original position. The rectangular column at the rear end of the filter bucket enters the rectangular groove of the rear sleeve. Releasing the T-shaped rod causes the spring to extend and push the lower end of the T-shaped rod into the locking hole of the sliding column, thus limiting the sliding column. The motor can drive the filter bucket to rotate through the front sleeve, while the rear sleeve rotates at the front end of the sliding column. The connecting component facilitates quick and easy disassembly and cleaning of the filter bucket, improving the practicality of the device.

[0016] 2. This invention, by setting up a material pushing component, allows the filter bucket to collect impurities floating on the water surface. When the filter bucket rotates to collect impurities, the second motor drives the main shaft to rotate clockwise. The main shaft drives the connecting shaft to rotate in the same direction via a pulley and a connecting belt. The connecting shaft drives the secondary shaft to rotate counterclockwise via gear one and gear two. The main shaft and the secondary shaft rotate in opposite directions within the filter box. The main shaft and the secondary shaft drive several push plates to rotate. The push plates can push the impurities floating on the water surface toward the filter bucket. By setting up the material pushing component, the impurities floating on the water surface inside the filter box can be pushed toward the filter bucket, improving the quality of impurity collection by the filter bucket.

[0017] 3. This invention features a support bracket. During installation, the filter plate is placed in the tank, where the support bracket provides support. Simultaneously, the positioning rod at the lower end of the top plate can enter the positioning hole at the upper end of the tank. When cleaning the filter plate is required, the handle on the top plate is pulled, and the filter plate can be removed from the tank via the connecting rod. The filter plate can then be cleaned. The support bracket and top plate facilitate the disassembly and cleaning of the filter plate, preventing clogging from prolonged use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a sectional perspective view of the filter box of the present invention; Figure 3 This is a perspective view of the sieve bucket of the present invention during installation; Figure 4 This is a perspective view of the main shaft, secondary shaft, and connecting shaft of the present invention; Figure 5 This is a three-dimensional cross-sectional view of the tank during the installation of the filter plate of the present invention; In the diagram: 1. Filter box; 2. Opening; 3. Connecting assembly; 31. Fixing frame; 32. Sliding column; 33. Rectangular groove; 34. Rectangular column; 35. Pull rod; 36. T-shaped rod; 37. Limiting plate; 38. Spring; 39. Locking hole; 4. Cover plate; 5. Top plate; 6. Filter plate; 7. Tank body; 8. Motor 1; 9. Pushing assembly; 901. Motor 2; 902. Main shaft; 903. Sub-shaft; 904. Connecting shaft; 905. Pulley; 906. Connecting belt; 907. Gear 1; 908. Gear 2; 909. Push plate; 910. Through hole; 10. Drain pipe; 11. Sleeve; 12. Strainer; 13. Funnel; 14. Air jet mechanism; 15. Connecting rod; 16. Handle; 17. Positioning rod; 18. Positioning hole; 19. Mounting seat. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0020] Please see Figures 1-5 The present invention provides the following technical solution: a combined air flotation device for sewage treatment, including a filter box 1, an opening 2 at the upper end of the filter box 1, a cover plate 4 rotatably connected to the opening 2, a drain pipe 10 at the lower side of one end of the filter box 1, a tank 7 at the upper side of the end of the filter box 1 away from the drain pipe 10, a filter plate 6 in the tank 7, an air jet mechanism 14 at the lower end of the filter box 1, two sleeves 11 at the upper side of the filter box 1, a funnel 12 between the two sleeves 11, a plurality of funnels 13 on the funnel 12, a motor 8 at the upper front end of the filter box 1 corresponding to the sleeves 11, and the funnel 12 and the sleeves 11 connected by a connecting component 3.

[0021] In this invention, the connecting component 3 further includes a fixed frame 31, a sliding column 32, a rectangular groove 33, a rectangular column 34, a pull rod 35, a T-shaped rod 36, a limiting plate 37, a spring 38, and a locking hole 39. The filter bucket 12 has rectangular columns 34 at both ends, and each of the two sleeves 11 has a rectangular groove 33 corresponding to the rectangular column 34 at one end. A sliding column 32 is located at the rear end of the rear sleeve 11, and a pull rod 35 is located at the rear end of the sliding column 32. A fixed frame 31 is located at the rear end of the filter box 1, corresponding to the sliding column 32. A T-shaped rod 36 is located at the upper end of the fixed frame 31, and a limiting plate 37 is located on the surface of the T-shaped rod 36. A spring 38 is located on the surface of the T-shaped rod 36 between the limiting plate 37 and the fixed frame 31. A locking hole 39 corresponding to the T-shaped rod 36 is located in the sliding column 32.

[0022] By adopting the above technical solution, when installing the filter bucket 12, pulling the T-shaped rod 36 moves it upward, compressing the spring 38. Then, pulling the pull rod 35 moves the sliding column 32 backward, and the filter bucket 12 is placed into the filter box 1. The rectangular column 34 at the front end of the filter bucket 12 is inserted into the rectangular groove 33 of the front sleeve 11. Then, pushing the pull rod 35 pushes the sliding column 32 forward, and the sliding column 32 pushes the other sleeve 11 to reset. The rectangular column 34 at the rear end of the filter bucket 12 enters the rectangular groove 33 of the rear sleeve 11. Then, releasing the T-shaped rod 36, the spring 38 extends and pushes the lower end of the T-shaped rod 36 into the locking hole 39 of the sliding column 32, achieving the effect of limiting the sliding column 32. The motor 8 can drive the filter bucket 12 to rotate through the front sleeve 11, while the rear sleeve 11 rotates at the front end of the sliding column 32. By setting the connecting component 3, the filter bucket 12 can be quickly disassembled and cleaned, improving the practicality of the device.

[0023] Furthermore, in this invention, when the side of the pull rod 35 contacts the side of the fixed frame 31, the locking hole 39 on the sliding column 32 corresponds to the lower end position of the T-shaped rod 36, and the upper ends of the T-shaped rod 36 protrude from the side of the fixed frame 31 on both sides.

[0024] By adopting the above technical solution, the lower end of the T-shaped rod 36 can easily enter the locking hole 39 of the sliding column 32, and the upper ends of the T-shaped rod 36 protrude from the sides of the fixing frame 31 to facilitate pulling the T-shaped rod 36.

[0025] Furthermore, in this invention, a bearing rotating seat is provided between the rear sleeve 11 and the sliding column 32, and the fixed frame 31 and the filter box 1 are both provided with sliding holes corresponding to the sliding column 32.

[0026] By adopting the above technical solution, the rear sleeve 11 can rotate on the sliding column 32, and the sliding column 32 can rotate in the fixed frame 31 and the filter box 1.

[0027] In this embodiment, when using the combined air flotation equipment for wastewater treatment, the device is installed in a suitable position, and wastewater is poured into the tank 7. The filter plate 6 in the tank 7 performs preliminary filtration of the wastewater, which then enters the filter box 1. The jetting mechanism 14 injects air into the filter box 1, and the motor 8 is turned on to drive the filter bucket 12 to rotate. When the filter bucket 12 rotates, impurities floating on the water surface enter the filter bucket 12 through the funnel 13. After the wastewater is filtered, it is discharged from the filter box 1 through the drain pipe 10. By setting the connecting component 3, when the filter bucket 12 is installed, the T-shaped rod 36 is pulled upward, and the spring 38 is compressed. Then, the pull rod 35 is pulled to drive the sliding column 32 backward, and then the filter bucket is installed. 12 is placed in filter box 1, and the rectangular post 34 at the front end of the filter bucket 12 is inserted into the rectangular groove 33 of the front sleeve 11. Then, push the pull rod 35 to push the slide column 32 forward. The slide column 32 pushes the other sleeve 11 to reset. The rectangular post 34 at the rear end of the filter bucket 12 enters the rectangular groove 33 of the rear sleeve 11. Then, release the T-shaped rod 36. The spring 38 extends and pushes the lower end of the T-shaped rod 36 into the locking hole 39 of the slide column 32, so as to achieve the effect of limiting the slide column 32. The motor 8 can drive the filter bucket 12 to rotate through the front sleeve 11. At the same time, the rear sleeve 11 rotates at the front end of the slide column 32. By setting the connecting component 3, the filter bucket 12 can be quickly disassembled and cleaned, improving the practicality of the device. Example 2

[0028] The difference between this embodiment and Embodiment 1 is that a pushing assembly 9 is provided inside the filter box 1 at a position corresponding to the strainer 12. The pushing assembly 9 includes a second motor 901, a main shaft 902, a secondary shaft 903, a connecting shaft 904, a pulley 905, a connecting belt 906, a first gear 907, a second gear 908, and a push plate 909. The second motor 901 is provided on one side of the front end of the filter box 1, the main shaft 902 is provided at the output end of the second motor 901, the secondary shaft 903 is provided on one side of the main shaft 902, the second gear 908 is provided at the rear end of the secondary shaft 903, the connecting shaft 904 is provided at a position corresponding to the second gear 908 at the rear end of the filter box 1, the first gear 907 is provided on the connecting shaft 904 at a position corresponding to the second gear 908, pulleys 905 are provided on both the connecting shaft 904 and the main shaft 902, a connecting belt 906 is provided between the two pulleys 905, and several push plates 909 are provided on both the main shaft 902 and the secondary shaft 903.

[0029] By adopting the above technical solution, when the filter bucket 12 rotates to collect impurities floating on the water surface, the second motor 901 is turned on to drive the main shaft 902 to rotate clockwise. The main shaft 902 drives the connecting shaft 904 to rotate in the same direction through the pulley 905 and the connecting belt 906. The connecting shaft 904 drives the secondary shaft 903 to rotate counterclockwise through the gear 1 907 and the gear 2 908. The main shaft 902 and the secondary shaft 903 rotate in opposite directions in the filter box 1. The main shaft 902 and the secondary shaft 903 drive several push plates 909 to rotate. The push plates 909 can push the impurities floating on the water surface toward the filter bucket 12. By setting the pusher assembly 9, the impurities floating on the water surface inside the filter box 1 can be pushed toward the filter bucket 12, thereby improving the quality of impurity collection by the filter bucket 12.

[0030] Furthermore, in this invention, the push plate 909 is provided with several through holes 910, and the push plates 909 on the main shaft 902 and the auxiliary shaft 903 are staggered from each other with the sieve bucket 12.

[0031] By adopting the above technical solution, setting several through holes 910 on the push plate 909 can reduce the resistance of water to the push plate 909, making the push plate 909 easy to rotate, and the push plates 909 on the main shaft 902 and the secondary shaft 903 will not collide with the leakage bucket 12.

[0032] Furthermore, in this invention, bearing rotating seats are provided between the main shaft 902 and the filter box 1, between the secondary shaft 903 and the filter box 1, and between the connecting shaft 904 and the filter box 1, and adjacent push plates 909 are at an angle of 120 degrees.

[0033] By adopting the above technical solution, the main shaft 902, the secondary shaft 903 and the connecting shaft 904 can all rotate on the filter box 1, and a number of push plates 909 can be distributed at equal intervals.

[0034] Furthermore, in this invention, the longitudinal length of the push plate 909 is the same as the longitudinal width inside the filter box 1, and the push plate 909 is welded to the main shaft 902 and to the auxiliary shaft 903 by pressure welding.

[0035] By adopting the above technical solution, the side of the push plate 909 will not scratch the inner wall of the filter box 1, and the pressure welding makes the push plate 909 and the main shaft 902, as well as the push plate 909 and the auxiliary shaft 903, more secure.

[0036] In this embodiment, when the filter bucket 12 rotates to collect impurities floating on the water surface, the pusher assembly 9 is set up to collect the impurities. The motor 901 is turned on to drive the main shaft 902 to rotate clockwise. The main shaft 902 drives the connecting shaft 904 to rotate in the same direction through the pulley 905 and the connecting belt 906. The connecting shaft 904 drives the secondary shaft 903 to rotate counterclockwise through the gear 907 and the gear 908. The main shaft 902 and the secondary shaft 903 rotate in opposite directions in the filter box 1. The main shaft 902 and the secondary shaft 903 drive several push plates 909 to rotate. The push plates 909 can push the impurities floating on the water surface toward the filter bucket 12. By setting the pusher assembly 9, the impurities floating on the water surface inside the filter box 1 can be pushed toward the filter bucket 12, improving the quality of impurity collection by the filter bucket 12. Several through holes 910 are set on the push plates 909 to reduce the resistance of water to the push plates 909, and the push plates 909 can be rotated easily. Example 3

[0037] The difference between this embodiment and embodiments 1 and 2 is that: a top plate 5 is provided on both sides of the upper end of the tank 7, a handle 16 is provided on the upper end of the top plate 5, the filter plate 6 is connected to the top plate 5 by a connecting rod 15, a positioning rod 17 is provided on both sides of the lower end of the top plate 5, a positioning hole 18 corresponding to the positioning rod 17 is provided on the upper end of the tank 7, and a support 19 is provided at both ends of the tank 7 at positions corresponding to the filter plate 6.

[0038] By adopting the above technical solution, when installing the filter plate 6, the filter plate 6 is placed in the tank 7. The support 19 in the tank 7 supports the filter plate 6. At the same time, the positioning rod 17 at the lower end of the top plate 5 can enter the positioning hole 18 at the upper end of the tank 7. When the filter plate 6 needs to be cleaned, the handle 16 on the top plate 5 is pulled. The top plate 5 can remove the filter plate 6 from the tank 7 through the connecting rod 15. Then the filter plate 6 can be cleaned. By setting the support 19 and the top plate 5, it is convenient to disassemble and clean the filter plate 6, and avoid the filter plate 6 from clogging after long-term use.

[0039] Furthermore, in this invention, when the lower end of the top plate 5 contacts the upper end of the tank 7, the lower end of the filter plate 6 contacts the upper end of the support 19, and the lower end of the positioning rod 17 is set as an arc-shaped structure.

[0040] By adopting the above technical solution, the support 19 can support the filter plate 6 after it is placed in the tank 7, and the lower end of the positioning rod 17 is set with an arc structure to facilitate the positioning rod 17 to enter the positioning hole 18.

[0041] In this embodiment, by setting the support 19, the filter plate 6 is placed in the tank 7 during installation. The support 19 in the tank 7 supports the filter plate 6. At the same time, the positioning rod 17 at the lower end of the top plate 5 can enter the positioning hole 18 at the upper end of the tank 7. When the filter plate 6 needs to be cleaned, the handle 16 on the top plate 5 is pulled. The top plate 5 can remove the filter plate 6 from the tank 7 through the connecting rod 15. Then the filter plate 6 can be cleaned. The support 19 and the top plate 5 facilitate the disassembly and cleaning of the filter plate 6, and prevent the filter plate 6 from becoming clogged after long-term use.

[0042] In this invention, motor 2901 is a previously disclosed technology, and the selected model is 5IK120GN-CF.

[0043] The structure and working principle of the filter box 1, opening 2, cover plate 4, filter plate 6, tank 7, motor 8, drain pipe 10, sleeve 11, sieve 12, funnel 13 and air jet mechanism 14 in this invention have been disclosed in a combined air flotation device for sewage treatment disclosed in Chinese patent application No. 2023213869698. Its working principle is as follows: sewage is poured into the tank 7, the filter plate 6 in the tank 7 performs preliminary filtration on the sewage and then enters the filter box 1, the air jet mechanism 14 injects air into the filter box 1, the motor 8 is turned on to drive the sieve 12 to rotate, when the sieve 12 rotates, the impurities floating on the water surface enter the sieve 12 through the funnel 13, and after the sewage is filtered, the filtered sewage is discharged from the filter box 1 through the drain pipe 10.

[0044] The working principle and usage process of this invention: When using the combined air flotation equipment for sewage treatment, the device is installed in a suitable position, and sewage is poured into the tank 7. The filter plate 6 in the tank 7 performs preliminary filtration on the sewage, which then enters the filter box 1. The jetting mechanism 14 injects air into the filter box 1, and the motor 8 is turned on to drive the filter bucket 12 to rotate. When the filter bucket 12 rotates, impurities floating on the water surface enter the filter bucket 12 through the funnel 13. After the sewage is filtered, it is discharged from the filter box 1 through the drain pipe 10. By setting the connecting component 3, when the filter bucket 12 is installed, the T-shaped rod 36 is pulled to move upward, and the spring 38 is compressed. Then, the pull rod 35 is pulled to move the sliding column 32 backward. The filter bucket 12 is placed into the filter box 1, and the rectangular post 34 at the front end of the filter bucket 12 is inserted into the rectangular groove 33 of the front sleeve 11. Then, the pull rod 35 is pushed to move the sliding column 32 forward. The sliding column 32 pushes the other sleeve 11 back to its original position, and the rectangular post 34 at the rear end of the filter bucket 12 enters the rectangular groove 33 of the rear sleeve 11. Then, the T-shaped rod 36 is released, and the spring 38 extends and pushes the lower end of the T-shaped rod 36 into the locking hole 39 of the sliding column 32, achieving the effect of limiting the sliding column 32. The motor 8 can drive the filter bucket 12 to rotate through the front sleeve 11, while the rear sleeve 11 rotates at the front end of the sliding column 32. The connection component 3 is set to facilitate quick and easy disassembly and cleaning of the filter bucket 12, improving the practicality of the device. When the filter bucket 12 rotates to collect impurities floating on the water surface, the pusher assembly 9 is set up. Motor 2 901 is activated, driving the main shaft 902 to rotate clockwise. The main shaft 902, through pulley 905 and connecting belt 906, drives the connecting shaft 904 to rotate in the same direction. The connecting shaft 904, through gear 1 907 and gear 2 908, drives the secondary shaft 903 to rotate counterclockwise. The main shaft 902 and secondary shaft 903 rotate in opposite directions within the filter box 1. The main shaft 902 and secondary shaft 903 drive several push plates 909 to rotate. The push plates 909 push the impurities floating on the water surface towards the filter bucket 12. By setting up the pusher assembly 9, impurities floating on the water surface inside the filter box 1 can be pushed towards the filter bucket 12, raising the filter bucket 12. 2. To improve the quality of impurity collection, several through holes 910 are provided on the push plate 909 to reduce the resistance of water to the push plate 909 and facilitate the rotation of the push plate 909. By setting the support 19, the filter plate 6 is placed in the tank 7 during installation. The support 19 in the tank 7 supports the filter plate 6. At the same time, the positioning rod 17 at the lower end of the top plate 5 can enter the positioning hole 18 at the upper end of the tank 7. When the filter plate 6 needs to be cleaned, the handle 16 on the top plate 5 is pulled. The top plate 5 can remove the filter plate 6 from the tank 7 through the connecting rod 15. Then the filter plate 6 can be cleaned. The support 19 and the top plate 5 facilitate the disassembly and cleaning of the filter plate 6 and prevent the filter plate 6 from becoming clogged after long-term use.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined air floatation device for sewage treatment comprising a filter tank, characterized in that: The upper end of the filter box is provided with an opening, a cover plate is rotatably connected in the opening, a drain pipe is arranged at the lower side of one end of the filter box, a groove is arranged at the upper side of the end of the filter box away from the drain pipe, a filter plate is arranged in the groove, a jet mechanism is arranged at the lower end of the interior of the filter box, two sleeves are arranged at the upper side of the interior of the filter box, a leakage barrel is arranged between the two sleeves, a plurality of hoppers are arranged on the leakage barrel, a motor one is arranged at the upper side of the front end of the filter box and corresponds to the sleeves, and the leakage barrel and the sleeves are connected through a connecting assembly.

2. The combined air floatation equipment for sewage treatment according to claim 1, characterized in that: The connecting assembly comprises a fixed frame, a sliding column, a rectangular slot, a rectangular column, a pull rod, a T-shaped rod, a limiting plate, a spring and a clamping hole, wherein the leakage barrel is provided with the rectangular column at two ends, the two sleeves are each provided with the rectangular slot corresponding to the rectangular column at one end, the rear sleeve is provided with the sliding column at the rear end, the sliding column is provided with the pull rod at the rear end, the filter box is provided with the fixed frame at the position corresponding to the sliding column at the rear end, the fixed frame is provided with the T-shaped rod at the upper end, the T-shaped rod is provided with the limiting plate on the surface, the spring is arranged between the limiting plate and the fixed frame on the surface of the T-shaped rod, and the sliding column is provided with the clamping hole corresponding to the T-shaped rod.

3. The combined air floatation equipment for sewage treatment according to claim 2, characterized in that: When the side edge of the pull rod contacts the side edge of the fixed frame, the clamping hole on the sliding column corresponds to the position of the lower end of the T-shaped rod, and the upper end of the T-shaped rod protrudes from the side edge of the fixed frame on both sides.

4. The combined air floatation equipment for sewage treatment according to claim 2, characterized in that: A bearing rotating seat is arranged between the rear sleeve and the sliding column, and the sliding hole corresponding to the sliding column is arranged in the fixed frame and the filter box.

5. The combined air floatation equipment for sewage treatment according to claim 1, characterized in that: A pushing assembly is arranged at the position corresponding to the leakage barrel in the interior of the filter box, the pushing assembly comprises a motor two, a main shaft, an auxiliary shaft, a connecting shaft, a belt pulley, a connecting belt, a gear one, a gear two and a push plate, the filter box is provided with the motor two at one side of the front end, the motor two is provided with the main shaft at the output end, the main shaft is provided with the auxiliary shaft at one side, the auxiliary shaft is provided with the gear two at the rear end, the filter box is provided with the connecting shaft at the position corresponding to the gear two at the rear end, the connecting shaft is provided with the gear one at the position corresponding to the gear two, the belt pulley is arranged on the connecting shaft and the main shaft, the connecting belt is arranged between the two belt pulleys, and the main shaft and the auxiliary shaft are each provided with a plurality of push plates.

6. The combined air flotation apparatus for sewage treatment according to claim 5, characterized in that: A plurality of through holes are formed in the push plate, and the push plates on the main shaft and the auxiliary shaft are staggered with the leakage barrel.

7. The combined air floatation equipment for sewage treatment according to claim 5, characterized in that: A bearing rotating seat is arranged between the main shaft and the filter box, between the auxiliary shaft and the filter box and between the connecting shaft and the filter box, and adjacent push plates are at an angle of 120 degrees.

8. The combined air floatation equipment for sewage treatment according to claim 5, characterized in that: The longitudinal length of the push plate is the same as the longitudinal width of the interior of the filter box, and the push plate and the main shaft and the push plate and the auxiliary shaft are welded through pressure welding.

9. The combined air floatation equipment for sewage treatment according to claim 1, characterized in that: The top plate is provided with a handle at the upper end, the filter plate and the top plate are connected through the connecting rod, the top plate is provided with the positioning rod at the lower end, the groove is provided with the positioning hole corresponding to the positioning rod at the upper end, and the groove is provided with the lap at the positions corresponding to the filter plate at both ends in the interior.

10. The combined air floatation apparatus for sewage treatment according to claim 9, characterized in that: When the lower end of the top plate contacts the upper end of the groove, the lower end of the filter plate contacts the upper end of the lap, and the lower end of the positioning rod is provided in an arc structure.

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