Nitrogen and phosphorus removal device for pig farm wastewater treatment

Abstract

The present invention relates to the technical field of sewage treatment equipment, and discloses a nitrogen and phosphorus removal device for pig farm sewage treatment, including a bottom support, the bottom support is fixed to the ground, the inner side of the top of the bottom support is fixedly connected to a lower tank body, the top of the bottom support is fixedly connected to the top support by a fixed pipe, and a valve is arranged at the bottom of the lower tank body. In the prior art, when cleaning the inner wall of the tank body, there is a technical problem that incomplete cleaning easily causes residue accumulation, eventually causes blockage, and finally affects the feeding efficiency. The present invention can always fit with the funnel-shaped inner wall at the bottom of the lower tank body by utilizing a scraper assembly, and can still fit with the inner wall at the bottom of the lower tank body under the action of an internal elastic component after being worn out after long-term use, thereby ensuring the cleaning and stirring effect of the equipment. Secondly, the inner wall of the lower tank body can be cleaned more comprehensively in cooperation with a stirring cleaning assembly, thereby improving the stirring effect and the cleaning effect, avoiding the residual sediment on the inner wall of the lower tank body, and ensuring the removal and filtering effect of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, in particular to a nitrogen and phosphorus removal device for pig farm sewage treatment. Background Art

[0002] Pig farm wastewater usually contains a large amount of suspended solids and high-concentration organic matter (such as feed residues, animal feces and urine). If it is discharged directly without treatment, it will have a serious impact on the environment. During the pretreatment stage of pig farm wastewater, the wastewater will first enter the treatment system, and the large impurities and suspended solids will be removed by the screen. The pretreated wastewater enters the regulating tank to homogenize the water quality and water volume to ensure the stability of the subsequent treatment process. The corresponding purification treatment is carried out to remove the nitrogen and phosphorus in the wastewater. In addition, as the pig farm breeding progresses, new wastewater will be continuously generated every day. Therefore, the pig farm wastewater treatment equipment needs a higher cleaning and continuous operation capacity to ensure the continuous cleaning and treatment of pig farm wastewater.

[0003] A Chinese invention patent with announcement number CN117756255A discloses a nitrogen-phosphorus removal device for rural domestic sewage treatment and a method of using the same. The nitrogen-phosphorus removal device is provided with a tank body and a lifting mechanism so that the sewage can fully react with the dephosphorization agent and the denitrification agent after entering the tank body, and the cylinder can drive the stirring blade to enter the tank body after starting, and then the motor can drive the stirring blade to fully stir the sewage being purified after starting, and it is also convenient to clean the impurities remaining on the inner wall of the tank body; through the above settings, the structure of the nitrogen-phosphorus removal device is simpler, so that it is convenient to carry out small-scale sewage treatment work in rural areas.

[0004] The above-mentioned related technologies have the following defects:

[0005] The above-mentioned device uses a brush installed at the stirring blade to clean and scrape the inner wall of the tank body. However, in order to facilitate material discharge, the bottom of the tank body is mostly funnel-shaped. Therefore, there is a lack of effective means to scrape and clean the inner wall of the tank body located at the funnel shape, which makes it easy for residues in the tank body to accumulate on the inner wall of the bottom of the tank body, which may eventually cause blockage at the discharge port and affect the discharge efficiency. Summary of the invention

[0006] In order to solve the technical problem that in the prior art proposed in the background technology, when cleaning the inner wall of the tank, incomplete cleaning easily causes residue accumulation, and finally causes blockage and affects the feeding efficiency, the present invention provides a nitrogen and phosphorus removal device for pig farm wastewater treatment.

[0007] The present invention is implemented by the following technical scheme: a nitrogen and phosphorus removal device for pig farm wastewater treatment includes a bottom support, which is fixed to the ground, a lower tank body is fixedly connected to the inner side of the top of the bottom support, a top support is connected to the top support by a fixed pipe at the top of the bottom support, and a valve is arranged at the bottom of the lower tank body.

[0008] Also includes:

[0009] The stirring mechanism comprises a scraper assembly and a stirring cleaning assembly, wherein the stirring cleaning assembly comprises a hydraulic rod fixedly installed in the middle of the top end of the top support, the bottom end of the hydraulic rod is fixedly connected to a stirring motor, the bottom end of the stirring motor is fixedly connected to a top cover, and the stirring motor passes through the middle of the top cover and is fixedly connected to a rotating drum, the outer wall of the rotating drum is evenly and staggeredly fixedly connected with multiple groups of stirring rollers, the scraper assembly comprises a circular plate fixed to the lower part of the inner wall of the rotating drum, and the bottom end of the circular plate is fixedly connected to a spring 2, the bottom end of the spring 2 is fixedly connected to a bottom scraper, the bottom ends of the bottom scraper are slidably abutted against the bottom of the inner wall of the lower tank body on both sides of the bottom end, the lower part of the outer wall of the rotating drum is symmetrically and vertically fixedly connected with sliding strips, and two groups of the sliding strips are vertically slidably connected to the bottom scraper, and a sealing rubber ring is provided at the connection between the bottom scraper and the outer wall of the rotating drum.

[0010] The collecting mechanism is installed on the ground and arranged directly below the bottom end of the lower tank body, and comprises a collecting cavity. The bottom end of the collecting cavity is connected to a sewage pipe, and a filtering component is arranged in the collecting cavity.

[0011] Through the above technical scheme, the stirring mechanism can be used to perform stirring operations to mix the sewage and chemical reagents, so that the two are fully mixed and discharged to the collection mechanism to separate the sediment and sewage, which is convenient for subsequent targeted operations. Under the action of the stirring mechanism, the lower tank body can be comprehensively cleaned and stirred to ensure the cleaning effect of the equipment.

[0012] As a further improvement of the above scheme, the agitation cleaning assembly also includes a movable groove, which is opened on the upper part of the outer wall of the rotating drum, and a movable sleeve plate is vertically slidably connected in the movable groove, and a guide rod is fixedly connected to the outer wall of the movable sleeve plate, and a circular ring block is fixedly connected to the bottom end of the top cover, and a circulation groove is opened at the circular ring block, and the circulation groove is slidably connected to the guide rod.

[0013] Through the above technical solution, the movable sleeve plate can be relatively vertically displaced by utilizing the sliding connection between the guide rod 1 and the circulation slot 1.

[0014] As a further improvement of the above scheme, the bottom end of the movable sleeve is fixedly connected to a movable rod, and the outer wall of the movable rod is evenly fixedly connected to two groups of guide rods 2, and the two groups of guide rods 2 are both slidably connected to rotating blocks, and the inner sides of the two groups of rotating blocks are provided with circulation grooves 2, and the two groups of circulation grooves 2 are both slidably connected to the guide rods 2.

[0015] Through the above technical solution, the positions of the rotating drum and the rotating block remain relatively unchanged, and only the rotational connection between the rotating block and the limit plate can be realized, so that the rotational drive of the rotating block can be changed when the movable rod drives the guide rod to move vertically back and forth, thereby providing driving force for cleaning the cleaning brush.

[0016] As a further improvement of the above scheme, the outer sides of the two groups of circulation slots 2 are rotatably connected to limit plates, and the two groups of limit plates are fixedly connected to the inner wall of the rotating drum, the bottom ends of the two groups of rotating blocks are fixedly connected to gear 1, and the two sides of the bottom ends of the two groups of gear 1 are respectively meshed and connected with multiple groups of gear 2.

[0017] As a further improvement of the above scheme, the outer ends of the plurality of groups of gears are fixedly connected with rotating rods, and the rotating rods are rotatably connected to the stirring rollers, and the outer sides of the plurality of groups of stirring rollers are fixedly connected with side plates three.

[0018] Through the above technical solution, by utilizing the vertical reciprocating displacement of the movable rod, the rotating block can be reciprocatingly driven to rotate in the forward and reverse directions under the sliding connection between the guide rod 2 and the circulation groove 2, so as to realize the rotation of the bottom end gear 1 and transmit the gear 2 which is meshingly connected to the gear 1.

[0019] As a further improvement of the above scheme, multiple groups of gears three are connected to the side panels three in a uniformly rotating manner, one group of gears three is fixedly connected to the outer end of the rotating rod, multiple groups of gears three are outerly provided with chains, and multiple groups of gears three pass through the outer sides of the side panels three and are fixedly connected with cleaning brushes, and a sealing rubber ring is provided at the connection between the cleaning brush and the side panels three.

[0020] Through the above technical solution, the rotating rod is connected with the gear three to rotate back and forth in the positive and negative directions, and the chain can be used to transmit multiple sets of gear three, and finally the outer cleaning brush can be transmitted in a synchronous direction.

[0021] As a further improvement of the above scheme, the filter assembly includes a side panel one symmetrically fixedly connected to the outer walls on both sides of the collecting chamber, and the two groups of side panels one are vertically slidably connected with vertical rods, the tops of the two groups of vertical rods are fixedly connected with side panel two, and the tops of the two groups of side panels two are magnetically connected with filter screens, and the filter screens move in the collecting chamber.

[0022] Through the above technical solution, the filter is fixed to the side plate by magnetic attraction, and it is convenient to remove and process the sediment inside later.

[0023] As a further improvement of the above solution, a spring 1 is elastically connected in the middle of the outer ends of the side plate 1 and the side plate 2, and two groups of the spring 1 are both wound around the outer wall of the vertical rod.

[0024] Through the above technical solution, two sets of springs are used to realize that when the filter receives the sewage mixture, the impact force generated can cooperate with spring one to perform vertical reciprocating movement, thereby not only filtering the sediment, but also preventing the filter mesh from being blocked during the reciprocating movement, thereby ensuring the filtering effect.

[0025] As a further improvement of the above scheme, a ring body is fixedly connected to the outer wall of the top end of the lower tank body, the ring body is provided with a threaded slot, the top end of the threaded slot is vertically arranged, a ball block is rotatably connected in the threaded slot, an outer cover is fixedly connected to the inner side of the ball block, and the outer cover is rotatably connected to the top cover.

[0026] Through the above technical solution, it is convenient to achieve a tighter installation of the lower tank body and the top cover, ensure that the equipment can be more stable during later operation, and reduce the force of the assembled equipment.

[0027] As a further improvement of the above scheme, a reagent placement port is fixedly connected to one side of the top of the top cover, and connecting pipe 1 and connecting pipe 2 are fixedly connected to the top of the other side of the top cover, wherein connecting pipe 1 is connected to a clean water pipe, and connecting pipe 2 is connected to a sewage pipe.

[0028] The above technical solution makes it easier to input and output sewage, making it more convenient to clean up later.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The scraper assembly of the present invention can always fit with the funnel-shaped inner wall at the bottom end of the lower tank body, and after wear and tear due to long-term use, it can still fit with the inner wall at the bottom end of the lower tank body under the action of the internal elastic component, thereby ensuring the cleaning and stirring effects of the equipment. Secondly, the stirring and cleaning assembly can be used to clean the inner wall of the lower tank body more comprehensively, thereby improving the stirring and cleaning effects, avoiding residual sediment on the inner wall of the lower tank body, and ensuring the removal and filtering effect of the equipment.

[0031] The present invention utilizes a filtering component to filter the stirred sediment, which is convenient for subsequent unified treatment. The sewage after filtering through the filter can enter the area to be treated through the sewage pipe and be purified to varying degrees as needed to achieve the purpose of discharge or recycling of the water body.

[0032] When the hydraulic rod is extended and pushed to push the stirring motor and the top cover to perform vertical displacement, the internal structural parts of the lower tank body can be easily maintained, and cleaning and maintenance are relatively convenient. In addition, when the hydraulic rod is extended and moved downward, the sliding connection between the threaded groove and the ball block can be coordinated, so that the connection between the top cover and the lower tank body is more stable, which is convenient for subsequent equipment to perform stirring and cleaning operations, and the vibration amplitude is reduced, thereby prolonging the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the overall structure of a nitrogen and phosphorus removal device for pig farm wastewater treatment provided in Example 1 of the present invention;

[0034] Figure 2 For the present invention Figure 1 A schematic diagram of a front cross-sectional structure;

[0035] Figure 3 It is a schematic diagram of the structure of the stabilizing component of the present invention;

[0036] Figure 4 It is a schematic diagram of the structural connection state of the stirring mechanism of the present invention;

[0037] Figure 5 It is a schematic structural diagram of the agitation cleaning assembly of the present invention;

[0038] Figure 6 For the present invention Figure 2 A schematic diagram of the structure enlargement at the center A;

[0039] Figure 7 For the present invention Figure 4 A schematic diagram of the structure enlarged at B in the middle;

[0040] Figure 8 For the present invention Figure 5 Enlarged schematic diagram of the structure at C in the middle.

[0041] Description of main symbols:

[0042] 1. Bottom support; 2. Top support; 3. Lower tank body; 4. Ring body; 5. Threaded notch; 6. Ball block; 7. Outer cover; 8. Top cover; 9. Connecting pipe 1; 10. Connecting pipe 2; 11. Reagent placement port; 12. Stirring motor; 13. Hydraulic rod; 14. Collection chamber; 15. Side plate 1; 16. Vertical rod; 17. Side plate 2; 18. Spring 1; 19. Filter; 20. Drum; 21. Movable notch ; 22. Spring 2; 23. Bottom scraper; 24. Circular ring block; 25. Circulation slot 1; 26. Guide rod 1; 27. Movable sleeve plate; 28. Movable rod; 29. ​​Guide rod 2; 30. Rotating block; 31. Circulation slot 2; 32. Limiting plate; 33. Gear 1; 34. Gear 2; 35. Stirring roller; 36. Side plate 3; 37. Gear 3; 38. Cleaning brush; 39. Chain; 40. Circular ring plate. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0044] Example 1: Please combine Figure 1-Figure 4 and Figure 6 The nitrogen and phosphorus removal device for pig farm wastewater treatment of this embodiment includes:

[0045] The bottom support 1 is fixed to the ground, the inner side of the top of the bottom support 1 is fixedly connected with the lower tank body 3, the top of the bottom support 1 is fixedly connected with the top support 2 by a fixed pipe, and the bottom of the lower tank body 3 is provided with a valve.

[0046] Also includes:

[0047] The stirring mechanism includes a scraper assembly and a stirring and cleaning assembly. The stirring and cleaning assembly includes a hydraulic rod 13 fixedly installed in the middle of the top of the top support 2, the bottom end of the hydraulic rod 13 is fixedly connected to the stirring motor 12, the bottom end of the stirring motor 12 is fixedly connected to the top cover 8, and the stirring motor 12 passes through the middle of the top cover 8 and is fixedly connected to the rotating drum 20, and the outer wall of the rotating drum 20 is evenly and staggeredly fixedly connected with multiple groups of stirring rollers 35, the scraper assembly includes a circular plate 40 fixed to the lower part of the inner wall of the rotating drum 20, and the bottom end of the circular plate 40 is fixedly connected to the spring 22, the bottom end of the spring 22 is fixedly connected to the bottom scraper 23, the bottom ends of the bottom scraper 23 are slidably abutted against the bottom of the inner wall of the lower tank body 3 on both sides of the bottom, the lower part of the outer wall of the rotating drum 20 is symmetrically and vertically fixedly connected to the slide bar, and the two groups of slide bars are vertically slidably connected to the bottom scraper 23.

[0048] A ring body 4 is fixedly connected to the outer wall of the top end of the lower tank body 3, and a threaded slot 5 is opened on the ring body 4. The top end of the threaded slot 5 is vertically arranged. A ball block 6 is rotatably connected in the threaded slot 5. An outer cover 7 is fixedly connected to the inner side of the ball block 6. The outer cover 7 is rotatably connected to the top cover 8.

[0049] A reagent placement port 11 is fixedly connected to one side of the top of the top cover 8, and a connecting pipe 1 9 and a connecting pipe 2 10 are fixedly connected to the top of the other side of the top cover 8. The connecting pipe 1 9 is connected to a clean water pipe, and the connecting pipe 2 10 is connected to a sewage pipe.

[0050] The implementation principle of the nitrogen and phosphorus removal device for pig farm wastewater treatment in the embodiment of the present application is:

[0051] The sewage is first collected in a sedimentation tank, and large waste is separated using a screen. The sewage is allowed to settle, which facilitates the subsequent input of the sewage into the lower tank 3 for treatment.

[0052] After the equipment is installed, the hydraulic rod 13 can be started to push the stirring motor 12 and the top cover 8 fixedly connected thereto to move vertically downward to the top of the lower tank body 3, and under the sliding guidance of the ball block 6 and the threaded groove 5, the top cover 8 and the outer cover 7 are rotated to connect and fix the outer cover 7 more firmly to the ring body 4, which can effectively reduce the later stirring operation, make the equipment more stable, thereby increasing the service life of the equipment and improving the stability during operation.

[0053] The sewage and reagents are transported into the lower tank body 3 by using the connecting pipe 10 and the reagent placement port 11, and then the stirring motor 12 is started to drive the rotating drum 20, the stirring roller 35 and the bottom scraper 23 at the bottom to stir the internal mixed liquid. During stirring, the bottom scraper 23 at the bottom will always push the bottom scraper 23 to abut against the bottom of the inner wall of the lower tank body 3 under the elastic action of the spring 22 and the annular plate 40, and will be worn after long-term use. It can still be close to the bottom of the inner wall of the lower tank body 3 under the action of the spring 22 to ensure its own cleaning effect, and during stirring, it can also carry out comprehensive stirring in the lower tank body 3 with the cooperation of the stirring mechanism.

[0054] Example 2: Combination Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 Based on Example 1, this embodiment is further improved in that:

[0055] The stirring cleaning assembly also includes a movable groove 21, which is opened on the upper part of the outer wall of the rotating drum 20. A movable sleeve 27 is vertically slidably connected in the movable groove 21. A guide rod 26 is fixedly connected to the outer wall of the movable sleeve 27. A circular ring block 24 is fixedly connected to the bottom end of the top cover 8. A circulation groove 25 is opened at the circular ring block 24, and the circulation groove 25 is slidably connected to the guide rod 26.

[0056] A movable rod 28 is fixedly connected to the bottom end of the movable sleeve 27, and two groups of guide rods 29 are evenly fixedly connected to the outer wall of the movable rod 28. The two groups of guide rods 29 are both slidably connected to a rotating block 30. The inner sides of the two groups of rotating blocks 30 are provided with a circulation groove 21, and the two groups of circulation grooves 21 are both slidably connected to the guide rod 29.

[0057] The outer sides of the two sets of circulation slots 2 31 are rotatably connected to the limit plates 32, and the two sets of limit plates 32 are fixedly connected to the inner wall of the rotating drum 20. The bottom ends of the two sets of rotating blocks 30 are fixedly connected to gears 1 33, and the bottom ends of the two sets of gears 1 33 are respectively meshed and connected with multiple sets of gears 2 34 on both sides.

[0058] The outer ends of the plurality of gear sets 2 34 are all fixedly connected with rotating rods, and the rotating rods are all rotatably connected to the stirring rollers 35 , and the outer sides of the plurality of stirring rollers 35 are all fixedly connected with side plates 3 36 .

[0059] Multiple sets of side panels 36 are connected with gears 37 for uniform rotation, one set of gears 37 is fixedly connected to the outer end of the rotating rod, multiple sets of gears 37 are provided with chains 39 on their outer sleeves, and multiple sets of gears 37 pass through the outer sides of the side panels 36 and are fixedly connected with cleaning brushes 38.

[0060] The implementation principle of the nitrogen and phosphorus removal device for pig farm wastewater treatment in the embodiment of the present application is:

[0061] After the sewage inside and the reagents after the proportioning are placed, the stirring motor 12 is started to drive the drum 20 to rotate. As the drum 20 rotates, the movable sleeve 27 will be driven to rotate synchronously. The movable sleeve 27 will rotate and move up and down along the movable slot 21 under the sliding connection between the guide rod 1 26 and the circulation slot 1 25. When the movable rod 28 moves vertically back and forth with the movable sleeve 27, it will be driven to rotate under the sliding connection between the two sets of guide rods 29 and the circulation slot 2 31. The block 30 rotates under the rotation connection of the limit plate 32, and utilizes the meshing connection between the bottom gear 1 33 and the multiple sets of gear 2 34 to transmit the gear 2 34 and the rotating rod, and transmits the driving force to the gear 3 37. Utilizing the sleeve transmission of the chain 39, the multiple sets of cleaning brushes 38 are driven to clean the inner wall of the lower tank body 3. While the cleaning brushes 38 are driven to rotate as the rotating drum 20 rotates, the inner wall contact area can also be stirred and cleaned in both directions, which will further improve the cleaning effect of the inner wall of the lower tank body 3.

[0062] Example 3: Combination Figure 1 and Figure 2 Based on Example 1 and Example 2, this embodiment is further improved in that:

[0063] The collecting mechanism is installed on the ground and arranged directly below the bottom end of the lower tank body 3, and includes a collecting cavity 14. The bottom end of the collecting cavity 14 is connected to a sewage pipe, and a filtering component is arranged in the collecting cavity 14.

[0064] The filter assembly includes a side panel 15 symmetrically fixedly connected to the outer walls of both sides of the collecting chamber 14, and vertical rods 16 are vertically slidably connected inside the two groups of side panels 15, and the tops of the two groups of vertical rods 16 are fixedly connected to side panels 2 17, and the tops of the two groups of side panels 2 17 are magnetically connected to filters 19, and the filter screens 19 move in the collecting chamber 14.

[0065] The middle of the outer ends of the side plate 15 and the side plate 2 17 are elastically connected with springs 18 , and the two sets of springs 18 are both wound around the outer wall of the vertical rod 16 .

[0066] The implementation principle of the nitrogen and phosphorus removal device for pig farm wastewater treatment in the embodiment of the present application is:

[0067] After sufficient mixing and stirring, open the valve at the bottom to discharge the settled sewage and sediment to the filter 19, so that under the impact of the water and sediment on the filter 19, the filter 19 rebounds under the elastic action of the springs 18 on both sides, which can effectively avoid clogging of the holes of the filter 19, and the filtered water can be discharged from the sewage pipe at the bottom of the collection chamber 14 to the next area for collection and purification. The collected sediment can be used to disassemble the filter 19 as a whole, and the sediment inside can be treated uniformly.

[0068] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Nitrogen and phosphorus removal device for pig farm wastewater treatment, including: A bottom support, wherein the bottom support is fixed to the ground, the inner side of the top of the bottom support is fixedly connected to the lower tank body, the top of the bottom support is fixedly connected to the top support by a fixed pipe, and the bottom of the lower tank body is provided with a valve; It is characterized by further comprising: The stirring mechanism comprises a scraper assembly and a stirring cleaning assembly, the stirring cleaning assembly comprises a hydraulic rod fixedly installed at the middle of the top end of the top support, the bottom end of the hydraulic rod is fixedly connected to a stirring motor, the bottom end of the stirring motor is fixedly connected to a top cover, and the stirring motor passes through the middle of the top cover and is fixedly connected to a rotating drum, the outer wall of the rotating drum is evenly staggered and fixedly connected with multiple groups of stirring rollers, the scraper assembly comprises a circular plate fixed to the lower part of the inner wall of the rotating drum, and the bottom end of the circular plate is fixedly connected to a spring 2, the bottom end of the spring 2 is fixedly connected to a bottom scraper, The two sides of the bottom end of the bottom scraper are slidably abutted against the bottom of the inner wall of the lower tank body, and the lower part of the outer wall of the rotating drum is symmetrically and vertically fixedly connected with sliding strips, and two groups of the sliding strips are vertically slidably connected to the bottom scraper. The stirring cleaning assembly also includes a movable notch, and the movable notch is opened on the upper part of the outer wall of the rotating drum. A movable sleeve plate is vertically slidably connected in the movable notch. A guide rod 1 is fixedly connected to the outer wall of the movable sleeve plate. A circular ring block is fixedly connected to the bottom end of the top cover. A circulation notch 1 is opened at the circular ring block. The circulation notch 1 is slidably connected to the guide rod 1. The movable sleeve plate is on the guide rod The movable sleeve plate is fixedly connected with a movable rod at the bottom end, and two sets of guide rods are evenly fixedly connected with the outer wall of the movable rod. The two sets of guide rods are slidably connected with rotating blocks. The inner sides of the two sets of rotating blocks are provided with circulating grooves 2. The two sets of circulating grooves 2 are slidably connected with guide rods 2. The outer sides of the two sets of circulating grooves 2 are rotatably connected with limiting plates, and the two sets of limiting plates are fixedly connected to the inner wall of the rotating drum. The bottom ends of the two sets of rotating blocks are fixedly connected with gears 1, and the two The two sides of the bottom end of the gear one group are respectively meshed and connected with multiple groups of gear two, the outer ends of the multiple groups of gear two are fixedly connected with rotating rods, and the rotating rods are rotatably connected to the stirring rollers, the outer sides of the multiple groups of stirring rollers are fixedly connected with side plates three, and the inner sides of the multiple groups of side plates three are evenly rotatably connected with gear three, one group of gear three is fixedly connected to the outer end of the rotating rod, the outer sleeves of the multiple groups of gear three are provided with chains, and the multiple groups of gear three are fixedly connected with cleaning brushes penetrating the outer sides of the side plates three, and as the cleaning brush is driven by the rotating drum to rotate, the cleaning brush stirs and cleans the contact area of ​​the inner wall of the tank body in both directions; A tank body sealing mechanism, the tank body sealing mechanism comprises a ring body, the ring body is fixedly mounted on the outer wall of the top end of the lower tank body, the ring body is provided with a threaded notch, the top end of the threaded notch is vertically arranged, a ball block is rotatably connected in the threaded notch, an outer cover is fixedly connected to the inner side of the ball block, the outer cover is rotatably connected to the top cover, a reagent placement port is fixedly connected to one side of the top end of the top cover, and a connecting pipe 1 and a connecting pipe 2 are respectively fixedly connected to the top of the other side of the top cover, the connecting pipe 1 is connected to a clean water pipe, and the connecting pipe 2 is connected to a sewage pipe; The collecting mechanism is installed on the ground and arranged directly below the bottom end of the lower tank body, and comprises a collecting cavity. The bottom end of the collecting cavity is connected to a sewage pipe, and a filtering component is arranged in the collecting cavity.

2. The nitrogen and phosphorus removal device for pig farm wastewater treatment according to claim 1, characterized in that: The filter assembly includes a side panel one symmetrically fixedly connected to the outer walls on both sides of the collecting chamber, and two groups of side panels one are vertically slidably connected with vertical rods, the tops of the two groups of vertical rods are fixedly connected to side panel two, and the tops of the two groups of side panels two are magnetically connected to filter screens, and the filter screens move in the collecting chamber.

3. The nitrogen and phosphorus removal device for pig farm wastewater treatment as claimed in claim 2, characterized in that: The middle of the outer ends of the side plate 1 and the side plate 2 are elastically connected with spring 1, and two groups of spring 1 are wound around the outer wall of the vertical rod.

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