A self-cleaning filter for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater

Abstract

The present invention relates to a self-cleaning filter for pre-treatment of high-ammonia nitrogen ammonium nitrate wastewater, comprising a frame, an infusion pipe and a drainage pipe, wherein the infusion pipe and the drainage pipe are both horizontally mounted in two sets of frames via bearings, the output port of the infusion pipe and the input port of the drainage pipe extend along the auxiliary platform and dock with the infusion docking port and the drainage docking port on the left and right sides of the main platform, and the central end of the main platform is docked with a driving mechanism. The present invention adopts a longitudinal tumbling liquid pressure supply output and a step-by-step buffer liquid to complete reaction filtration and automatic self-cleaning high-ammonia nitrogen ammonium nitrate wastewater filtration equipment; it solves the technical problem that in the past, high-ammonia nitrogen ammonium nitrate wastewater filters required distributed purification treatment during post-filtration due to insufficient space or equipment. At the same time, the temporary reaction filtration structure, in conjunction with the longitudinal tumbling reaction liquid and high-ammonia nitrogen ammonium nitrate wastewater supply structure, solves the technical problem of cumbersome manual handling.

Description

Technical Field

[0001] The invention relates to an environmentally friendly wastewater treatment and filtering device, in particular to a self-cleaning filter for pre-treating high-ammonia nitrogen ammonium nitrate wastewater. Background Art

[0002] Ammonium nitrate is a commonly used chemical raw material, serving as a key raw material for nitramine-based explosives, nitro-compound fertilizers, and refrigerants. In 1659, German J.R. Glauber first produced ammonium nitrate. In the 19th century, Europeans began producing ammonium nitrate by reacting ammonium sulfate with chitosan. The large-scale development of the synthetic ammonia industry in the early 20th century provided ammonium nitrate with abundant raw materials, leading to a rapid expansion in production.

[0003] The nitrogen in ammonium nitrate exists in the form of ammoniacal nitrogen and nitrate nitrogen. Ammoniacal nitrogen is volatile and difficult for plants to absorb, while nitrate nitrogen is more readily absorbed by plants. Some ammoniacal nitrogen in the soil is converted into nitrate nitrogen by the soil, while the remaining ammoniacal nitrogen is absorbed by plant roots and reacts with microorganisms within the root system to be converted into nitrate nitrogen, which is then absorbed by the plants. Ammonium nitrate nitrogen fertilizers are easily absorbed by plants, resulting in a low nitrogen loss rate of only about 10%. They can be used as base fertilizers and topdressing, promoting photosynthesis and increasing yields. Both theoretically and in practice, it has been proven that the yield-increasing effect on fruit trees, melons and vegetables, tobacco, corn, and wheat in the northern and southwestern dryland areas is significant. European countries generally use ammonium nitrate nitrogen fertilizers, which currently account for about 30% to 40% of nitrogen fertilizers. North America and some temperate countries also commonly use ammonium nitrate nitrogen fertilizers, accounting for about 10% of nitrogen fertilizers. Ammonium nitrogen fertilizers such as urea and bicarbonate need to be converted into nitrate nitrogen fertilizers before they can be absorbed by crops. The nitrogen loss rate is as high as 40% to 50%. Every year, about 9 million tons of fertilizer nitrogen is lost through leaching and volatilization, with a value of 40 billion yuan. The loss of nitrogen also causes serious environmental pollution. Under the current conditions of increasingly stringent environmental protection requirements, ammonium nitrate nitrogen fertilizers are of great value for promotion and application as a high-efficiency and environmentally friendly fertilizer.

[0004] The evaporation condensate from the ammonium nitrate industry contains high levels of ammonium nitrate and ammonia. Currently, there are no technically mature and economically viable treatment options for this wastewater. Some companies resort to diluting the wastewater with water, which severely pollutes the environment. Finding a more effective way to treat high-concentration ammonium nitrate wastewater and recover its resources is a key focus of domestic wastewater treatment research. Summary of the Invention

[0005] In order to solve the above problems, the present invention discloses a self-cleaning filter for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater with an integrated structure, which filters wastewater and automatically supplies pressure to flush the reaction chamber and collect wastewater reactants, and uses an annular chamber to complete flipping and uninterrupted division of labor reaction treatment.

[0006] To achieve the above objectives, the present invention provides a self-cleaning filter for pre-treating high-ammonia nitrogen ammonium nitrate wastewater, comprising a frame, an infusion pipe, and a drainage pipe. The infusion pipe and drainage pipe are both horizontally mounted within two sets of frames via bearings. The infusion pipe output port and drainage pipe input port extend along the auxiliary platform and dock with the infusion and drainage docking ports on the left and right sides of the main platform. A drive mechanism is docked and mounted at the central end of the main platform.

[0007] Furthermore, a temporary storage ring tube and a filter ring tube are movably installed in the rotating cavity opened on the upper and lower end surfaces of the main carrier, and several groups of preparatory docking one-way valves are evenly distributed on the outer end surfaces of the temporary storage ring tube and the filter ring tube. The preparatory docking one-way valves of the temporary storage ring tube and the preparatory docking one-way valves of the filter ring tube are respectively docked with the supply and infusion mechanism and the suction and drainage mechanism, and the temporary storage ring tube and the filter ring tube are selectively connected through two groups of one-way valves.

[0008] Furthermore, the temporary storage ring tube and the filter ring tube belong to the same liquid storage structure. The internal cavities of the temporary storage ring tube and the filter ring tube are evenly divided by partition ribs, and the space between two adjacent partition ribs is filled with a filter layer. The central end of the filter layer is installed with a turbine through an assembly flange. The turbine is docked with the output port of the infusion pipeline, the input port of the drainage pipeline, the supply infusion mechanism and the suction and drainage mechanism along the preparatory docking one-way valve.

[0009] Furthermore, the supply and infusion mechanism and the suction and drainage mechanism both belong to the same liquid conveying structure, and the supply and infusion mechanism and the suction and drainage mechanism both include a private service motor, a telescopic screw terminal, and an infusion hose. The private service motor is assembled on the outer end face of the frame through a bearing, and the output ports on the inner end faces of the private service motor of the supply and infusion mechanism and the private service motor of the suction and drainage mechanism are respectively docked with the supply liquid pipeline and the cleaning recovery pipeline. The inner output ports of the supply liquid pipeline and the cleaning recovery pipeline are docked with a telescopic screw terminal, and the drive screw at the root of the telescopic screw terminal is connected to the servo motor transmission, and the docking port on the top of the telescopic screw terminal is selectively docked with the pre-docking one-way valve.

[0010] Furthermore, the driving mechanism includes a stepping shaft, a bearing seat, an engaging rod and an engaging gear ring. The bearing seat is installed at the central end of the main platform, and the stepping shaft is horizontally installed in the bearing seat. The root end of the stepping shaft is connected to the output port of the stepping motor for transmission. The top end of the stepping shaft is engaged with the inner roller surface of the engaging roller through a gear, and the outer roller surface of the engaging roller is engaged with the engaging gear ring of the inner ring of the temporary storage ring tube and the filter ring tube for transmission.

[0011] Furthermore, the engaging rollers are mirror-imaged at the upper and lower ends of the stepping shaft, and the transmission shaft at the root of the engaging roller is installed on the inner end of the middle extension carrier through a bearing. The middle extension carrier and the main platform are in an integrated connection structure.

[0012] By adopting the above structure, compared with the existing technology, the present invention adopts a high-ammonia nitrogen ammonium nitrate wastewater filtration equipment that uses a longitudinal tumbling liquid pressure supply output and a step-by-step buffer liquid to complete the reaction filtration and automatic self-cleaning; it solves the technical problem that the high-ammonia nitrogen ammonium nitrate wastewater filter in the past needed distributed purification treatment due to insufficient space or equipment during the post-filtration process. At the same time, the temporary storage reaction filtration structure, combined with the longitudinal tumbling reaction liquid and high-ammonia nitrogen ammonium nitrate wastewater supply structure, solves the tedious technical problems of manual handling or manual inspection in the past. At the same time, the integrated division of labor and uninterrupted flipping reaction structure can effectively avoid the technical problem of synchronous reaction affecting the equipment being occupied or affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a structural schematic diagram of a self-cleaning filter for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater.

[0014] Figure 2 The present invention is a schematic diagram of the docking assembly structure of a self-cleaning filter filtering mechanism for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater.

[0015] Figure 3 The present invention is a schematic diagram of the internal structure of a self-cleaning filter mechanism for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater.

[0016] List of figure marks: 1 is the middle extension carrier, 2 is the infusion one-way valve, 3 is the main carrier, 4 is the infusion hose, 5 is the auxiliary carrier, 6-1 is the infusion pipeline, 6-2 is the drainage pipeline, 7-1 is the supply liquid pipeline, 7-2 is the cleaning recovery pipeline, 8 is the filter ring tube, 9 is the temporary storage ring tube, 10 is the telescopic screw terminal, 11 is the frame, 12 is the servo motor, 13 is the meshing gear ring, 14 is the meshing roller, 15 is the stepping shaft, 16 is the bearing seat, 17 is the drainage docking port, 18 is the partition rib, 19 is the filter layer, 20 is the turbine, 21 is the assembly flange, and 22 is the preparatory docking one-way valve. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0018] like Figure 1 、 Figure 2 and Figure 3As shown, the present invention relates to a self-cleaning filter for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater, comprising a frame, an infusion pipe and a drainage pipe, wherein the infusion pipe and the drainage pipe are horizontally mounted in two sets of frames through bearings, the output port of the infusion pipe 6-1 and the input port of the drainage pipe 6-2 extend along the auxiliary platform 5 and dock with the infusion docking port and the drainage docking port 17 on the left and right sides of the main platform 3, and a driving mechanism is docked and mounted on the central end of the main platform 3; a temporary storage ring tube 9 and a filter ring tube 8 are movably mounted in the rotating cavity opened on the upper and lower end surfaces of the main platform 3, and several groups of preparatory docking one-way valves 22 are evenly distributed on the outer end surfaces of the temporary storage ring tube 9 and the filter ring tube 8, the preparatory docking one-way valve 22 of the temporary storage ring tube 9 and the preparatory docking one-way valve 22 of the filter ring tube 8 are docked with the supply infusion mechanism and the suction and drainage mechanism respectively, and the temporary storage ring tube 9 and the filter ring tube 8 are selectively connected through two groups of one-way valves 2. The high-ammonia nitrate wastewater filtration system utilizes a longitudinally tumbling liquid pressure output and a step-by-step buffering system to complete reaction filtration and automated self-cleaning. This resolves the technical issue of previously requiring distributed purification processes during the post-filtration phase of high-ammonia nitrate wastewater filters due to insufficient space or equipment. The temporary storage reaction filtration structure, combined with the longitudinally tumbling reaction liquid and high-ammonia nitrate wastewater supply structure, eliminates the cumbersome technical issues of manual handling and inspection. The integrated, continuously rotating reaction structure effectively prevents the impact of simultaneous reactions on equipment occupancy or other issues. The infusion pipeline 6-1 discharges the high-ammonia nitrate wastewater into the temporary storage loop 9, where it is then circulated and injected into the filtration loop 8. During this process, the infusion check valve 2 can continuously control the amount of liquid injected from the temporary storage loop 9 into the filtration loop 8. At the same time, the interior of the temporary storage loop 9 can be injected with the automatically reacted and filtered solution A through the infusion docking port. After the mixed solution is simultaneously injected into the filtration loop 8, the reaction solution B is then added through the drainage docking port 17. Since both solution A and reaction solution B use commonly used mixed reaction chemicals on the market, they can be mixed and matched in appropriate proportions. After the impurities are precipitated, the reaction solution is discharged through the valve of the drainage pipe 6-2. The entire process requires the cooperation of multiple chambers. Therefore, the reaction time can be controlled during the reversal of the liquid supply process. This time difference can be used to ensure that the reaction cycle can be circulated until the temporary storage loop 9 and the filtration loop 8 need to be replaced. The filter layer 19 can be replaced in a timely manner. This device can realize the self-cleaning and filtration processes by circulating liquid supply. The filter layer 19 needs to be replaced far less frequently than some previous filter screens on the market because impurities are carried away by the water flow during precipitation and do not accumulate in large quantities. This can be combined with subsequent methods to complete the solid-liquid separation process. Ultimately, the self-cleaning and filtration effects are achieved.

[0019] like Figure 1 、 Figure 2 and Figure 3 As shown, the temporary storage loop 9 and the filter loop 8 are of the same liquid storage structure. The internal cavities of the temporary storage loop 9 and the filter loop 8 are evenly divided by partition ribs 18. A filter layer 19 is filled between adjacent partition ribs 18. A turbine 20 is mounted on the central end of the filter layer 19 via a mounting flange 21. The turbine 20 is docked with the output port of the infusion pipeline 6-1, the input port of the drainage pipeline 6-2, the supply and infusion mechanism, and the extraction and drainage mechanism along a preparatory docking one-way valve 22. The filter layer 19 can be mounted with the turbine 20 via the mounting flange 21. Through the process of passive drainage by the turbine due to the water flow, the internal filtered liquid can be discharged.

[0020] like Figure 1 、 Figure 2 and Figure 3 As shown, the supply and infusion mechanism and the suction and drainage mechanism both belong to the same liquid conveying structure, and the supply and infusion mechanism and the suction and drainage mechanism both include a private service motor 12, a telescopic screw terminal 10, and an infusion hose 4. The private service motor 12 is assembled on the outer end face of the frame 11 through a bearing, and the output ports of the inner end faces of the private service motor 12 of the supply and infusion mechanism and the private service motor 12 of the suction and drainage mechanism are respectively docked with the supply liquid pipeline 7-1 and the cleaning recovery pipeline 7-2, and the inner output ports of the supply liquid pipeline 7-1 and the cleaning recovery pipeline 7-2 are docked with a telescopic screw terminal 10, and the screw drive rod at the root of the telescopic screw terminal 10 is connected to the servo motor 12 for transmission, and the docking port at the top of the telescopic screw terminal 10 is selectively docked with the pre-docking one-way valve 22. The drive mechanism includes a stepping shaft 15, a bearing seat 16, an engagement roller 14, and an engagement gear ring 13. The bearing seat 16 is mounted at the center end of the main platform 3. The stepping shaft 15 is horizontally mounted within the bearing seat 16. The root end of the stepping shaft 15 is connected to the output port of the stepping motor for transmission. The top end of the stepping shaft 15 meshes with the inner roller surface of the engagement roller 14 through a gear for transmission. The outer roller surface of the engagement roller 14 meshes with the engagement gear ring 13 on the inner rings of the temporary storage ring tube 9 and the filtration ring tube 8. This provides drive and coordinates the supply and output of liquid.

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, the engaging rods 14 are mirror-imaged at the upper and lower ends of the stepping shaft 15. The drive shaft at the base of the engaging rods 14 is mounted via a bearing on the inner end of the mid-section extension carrier 1. The mid-section extension carrier 1 is integrally connected to the main platform 3. The engaging rods 14 serve as a fixed assembly and drive the temporary storage loop 9 and the filtration loop 8, thereby achieving simultaneous infusion and drainage of liquids.

[0022] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above-mentioned embodiment, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A self-cleaning filter for pre-treatment of high-ammonia nitrogen ammonium nitrate wastewater, comprising a frame, an infusion pipe, and a drainage pipe, wherein the infusion pipe and the drainage pipe are both horizontally mounted in two sets of frames via bearings, and characterized by: The output port of the infusion pipe (6-1) and the input port of the drainage pipe (6-2) extend along the auxiliary platform (5) and dock with the infusion docking port and the drainage docking port (17) on the left and right sides of the main platform (3), and a driving mechanism is docked and installed at the central end of the main platform (3); A temporary storage ring tube (9) and a filter ring tube (8) are movably installed in the rotating cavity provided on the upper and lower end surfaces of the main carrier (3). A plurality of groups of preparatory docking one-way valves (22) are evenly distributed on the outer end surfaces of the temporary storage ring tube (9) and the filter ring tube (8). The preparatory docking one-way valves (22) of the temporary storage ring tube (9) and the preparatory docking one-way valves (22) of the filter ring tube (8) are docked with the supply and infusion mechanism and the suction and drainage mechanism respectively. The temporary storage ring tube (9) and the filter ring tube (8) are selectively connected via two groups of one-way valves (2); The temporary storage ring tube (9) and the filter ring tube (8) belong to the same liquid storage structure. The internal cavities of the temporary storage ring tube (9) and the filter ring tube (8) are evenly separated by partition ribs (18). A filter layer (19) is filled between two adjacent partition ribs (18). A turbine (20) is installed at the central end of the filter layer (19) through an assembly flange (21). The turbine (20) and the preparatory docking one-way valve (22) are respectively docked with the output port of the infusion pipeline (6-1), the input port of the drainage pipeline (6-2), the supply infusion mechanism, and the extraction and drainage mechanism. The supply and infusion mechanism and the suction and drainage mechanism both belong to the same liquid conveying structure, and both the supply and infusion mechanism and the suction and drainage mechanism include a private service motor (12), a telescopic screw connection terminal (10), and an infusion hose (4). The private service motor (12) is assembled on the outer end face of the frame (11) through a bearing, and the output ports of the inner end faces of the private service motor (12) of the supply and infusion mechanism and the private service motor (12) of the suction and drainage mechanism are respectively docked with the supply liquid pipeline (7-1) and the cleaning recovery pipeline (7-2), and the inner output ports of the supply liquid pipeline (7-1) and the cleaning recovery pipeline (7-2) are docked with a telescopic screw connection terminal (10), and the driving screw at the root of the telescopic screw connection terminal (10) is connected to the servo motor (12) for transmission, and the docking port at the top of the telescopic screw connection terminal (10) is selectively docked with the preparatory docking one-way valve (22); The driving mechanism comprises a stepping shaft (15), a bearing seat (16), an engaging roller (14) and an engaging gear ring (13), wherein the bearing seat (16) is mounted on the central end of the main platform (3), and the stepping shaft (15) is horizontally mounted in the bearing seat (16), the root end of the stepping shaft (15) is connected to the output port of the stepping motor for transmission, the top end of the stepping shaft (15) is meshed with the inner roller surface of the meshing roller (14) through a gear for transmission, and the outer roller surface of the meshing roller (14) is meshed with the meshing gear ring (13) of the inner ring of the temporary storage ring tube (9) and the filter ring tube (8) for transmission.

2. A self-cleaning filter for pretreatment of high-ammonia nitrogen ammonium nitrate wastewater according to claim 1; characterized in that: The engaging rod (14) is mirror-imaged and distributed at the upper and lower ends of the stepping shaft (15). The transmission shaft at the root of the engaging rod (14) is mounted on the inner end of the middle extension carrier (1) through a bearing. The middle extension carrier (1) and the main platform (3) are connected in an integrated manner.

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