Combined multi-stage air stripping tower

Abstract

The invention relates to the technical field of air stripping towers, and particularly discloses a combined multi-stage air stripping tower which comprises a main body structure, a stirring structure and a temperature control structure, the stirring structure is fixedly arranged at the bottom end of the main body structure, and the temperature control structure is detachably arranged on a right side arm at the bottom of the main body structure; wherein the main body structure is used for bearing sewage and carrying out secondary gas-liquid mixing to enhance the ammonia nitrogen stripping effect, and the stirring structure is used for stirring liquid stored at the bottom in the main body structure and carrying out third-time gas-liquid mixing assisted stripping; the temperature control structure is used for adjusting the temperature of internal liquid, and efficient air stripping in different density states is facilitated. In conclusion, through combination of physical mixing innovation and intelligent regulation and control, the air stripping tower is superior to a traditional air stripping tower in the aspects of energy efficiency ratio, treatment effect and operation and maintenance cost, and is particularly suitable for small and medium-sized sewage treatment scenes sensitive to energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of stripping towers, and specifically to a combined multi-stage stripping tower. Background Art

[0002] In sewage treatment, some sewage such as landfill leachate contains a high concentration of ammonia nitrogen. High-concentration ammonia nitrogen wastewater has complex components, strong toxicity, great harm to the environment, and high treatment difficulty. There are many physicochemical methods for treating high-concentration ammonia nitrogen wastewater, mainly including air stripping method, steam stripping method, etc.; currently, the most common is the stripping method. Stripping is a physical method to make free ammonia escape from water, and mostly air stripping is used. Most traditional stripping tower devices use packed towers. The treatment process is that wastewater is sprayed from the top, and a blower blows air from the bottom, allowing air and wastewater to contact in the packing, so as to strip ammonia nitrogen from the sewage. Due to the short contact time between sewage and air, the ammonia stripping effect is low. If the water quality requirements are to be met, a large amount of air needs to be introduced. Moreover, the sewage sprayed down through the thick packing is easily blown into a water mist by a large amount of air, affecting air mass transfer and flow, and the use of packing is prone to clogging. Summary of the Invention

[0003] In view of the defects of the prior art, the present invention provides a combined multi-stage stripping tower, which solves the problems of low treatment effect, easy clogging and increased energy consumption in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solution: A combined multi-stage stripping tower, including a main structure, a stirring structure and a temperature control structure. The stirring structure is fixedly arranged at the bottom end of the main structure, and the temperature control structure is detachably installed on the right side arm at the bottom of the main structure. Among them, the main structure is used to carry sewage and perform secondary gas-liquid mixing to enhance the ammonia nitrogen stripping effect. The stirring structure is used to stir the liquid stored at the bottom inside the main structure and perform a third gas-liquid mixing to assist stripping. The temperature control structure is used to adjust the temperature of the internal liquid, which helps to achieve efficient stripping in different density states.

[0005] Preferably, the main structure includes a main component and a jet component. The main component is used to centrally store and discharge liquid. The jet component is detachably installed inside the main component, and the jet component is used for sewage input and secondary gas-liquid mixing.

[0006] Preferably, the main body assembly includes a tower tank, two pairs of legs, an exhaust port, a liquid discharge port, an aeration valve, a temperature detector, and a concentration detector; the tower tank is of a cylindrical structure, and a water inlet is provided in the middle of the upper wall of the tower tank. An arc-shaped feeding port is provided on the left side wall near the top of the tower tank, and a heating port is provided on the right side wall near the bottom of the tower tank. One end of each of the two pairs of legs is fixedly arranged on the lower wall of the tower tank at equal intervals. One end of the exhaust port is fixedly connected to the right side wall of the top of the tower tank. One end of the liquid discharge port is fixedly connected to the left side wall of the bottom of the tower tank. One end of the aeration valve is fixedly connected to the right side wall of the bottom of the tower tank, and the aeration valve is located below the heating port. The temperature detector is fixedly arranged on the inner side wall of the bottom of the tower tank, and the concentration detector is fixedly arranged on the inner side wall of the bottom of the tower tank.

[0007] Preferably, the jet assembly includes a liquid inlet pipe, a throat pipe, a pair of clamping seats, a tail pipe, a shaft frame, a stirring fan blade, a first air pipe, a flow valve, a first buckle plate, and a sleeve frame; one end of the liquid inlet pipe is detachably screwed into the water inlet at the top of the tower tank. A flange is provided at the top of the liquid inlet pipe, and the diameter of the bottom end of the liquid inlet pipe is smaller than that of the top end. A retaining edge is provided on the outer side wall of the bottom end of the liquid inlet pipe. The throat pipe is a convex tube body, and the diameter of one end of the throat pipe is the same as that of the bottom end of the liquid inlet pipe. A thread is provided at the bottom end of the throat pipe, and an air inlet interface is provided on the left side wall in the middle of the throat pipe. One end of the throat pipe is detachably installed on the bottom end of the liquid inlet pipe. The pair of clamping seats are symmetrically arranged on the upper wall of one end of the throat pipe, and the clamping seats are both arc-shaped. The pair of clamping seats are respectively movably clamped on the retaining edge at the bottom end of the liquid inlet pipe. The tail pipe is of a funnel-shaped structure. One end of the tail pipe is detachably screwed into the other end of the throat pipe. The shaft frame is fixedly arranged in the middle of the tail pipe. The stirring fan blade is movably arranged in the middle of the shaft frame and can rotate. One end of the first air pipe is detachably screwed into the air inlet interface in the middle of the throat pipe, and the other end of the first air pipe is located on the left side of the tower tank. The flow valve is fixedly arranged on the other end of the first air pipe. The first buckle plate is detachably buckled on the feeding port part of the left side wall of the tower tank, and the first buckle plate is sleeved on one end of the first air pipe. The first buckle plate fits with the tower tank. One end of the sleeve frame is fixedly arranged on the right side wall of the first buckle plate, and the other end of the sleeve frame is detachably sleeved on the throat pipe.

[0008] Preferably, the stirring structure includes a first motor, a stirring frame, a pair of spray pipes, a pair of blocking caps, and a pair of second air pipes; the first motor is fixedly arranged in the middle of the lower wall of the tower tank, and the driving end of the first motor movably penetrates through the lower wall of the tower tank. The middle of the stirring frame is fixedly sleeved on the driving end of the first motor. Both of the pair of spray pipes are in a funnel-shaped structure, and the diameter of one end of the spray pipe is larger than that of the other end. One ends of the pair of spray pipes are symmetrically arranged at both ends of the stirring frame in the counterclockwise direction. A pair of the blocking caps are respectively detachably screwed onto the other ends of the spray pipes. The pair of blocking caps are in a pipe body structure, and the middle of the blocking cap is in a hexagonal prism structure. A number of wire meshes are arranged at equal distances in the reverse direction in the middle of both ends of the pair of blocking caps. The wire meshes are used to disrupt the water flow. One ends of the pair of second air pipes are respectively fixedly connected to the upper arms of the other ends of the spray pipes, and the other ends of the second air pipes are located above the liquid level.

[0009] Preferably, the temperature control structure includes a cover cylinder, a pair of second buckles, a partition board, a second motor, a frame board, a number of heat conducting sheets, an electric heating rod, a reflux box, a cooling fan, and a drain valve; a liquid contact port is opened in the middle of the upper part near the left side arm of the cover cylinder. The left end of the cover cylinder is movably inserted into the heating port, and the liquid contact port is communicated with the tower tank. The pair of second buckles are respectively symmetrically arranged on the front and rear side walls of the cover cylinder, and the second buckles are fitted with the heating port of the tower tank. The other ends of the second buckles are respectively detachably arranged on the tower tank. The partition board is fixedly arranged in the cover cylinder and is located at the bottom part of the liquid contact port. The second motor is fixedly arranged in the middle of the inner lower wall at the bottom end of the cover cylinder, and the driving end of the second motor movably penetrates through the middle of the partition board. The frame board is fixedly arranged on the driving end of the second motor, and the frame board is movably embedded in the cover cylinder, and the frame board rotates in the cover cylinder through the second motor. The left and right ends of the frame board are respectively in contact with the inside of the cover cylinder. A number of the heat conducting sheets respectively penetrate through the middle of the frame board at equal distances, and the heat conducting sheets rotate through the frame board. Both ends of the heat conducting sheet are respectively in contact with the inside of the cover cylinder. The electric heating rod fixedly penetrates through one ends of a number of the heat conducting sheets. The reflux box is fixedly arranged on the right side wall of the cover cylinder, and the bottom end of the reflux box is fitted with the upper wall of the partition board. The left side wall of the reflux box is communicated with the cover cylinder, and a number of air holes are arranged at equal distances on the upper wall of the reflux box. The cooling fan is fixedly embedded in the right side wall of the reflux box and is near the middle of the upper end. One end of the drain valve is fixedly connected to the bottom end of the right side wall of the reflux box.

[0010] Preferably, the electric heating rod rotates 180 degrees in the cover cylinder through the second motor, and the electric heating rod can be located in the tower tank.

[0011] Preferably, the stirring fan blades can rotate by the downward impact of the water flow.

[0012] Preferably, when the water flow enters through the liquid inlet pipe and rapidly flows through the throat pipe, external air will enter through the first air pipe and be cut and mixed by the water flow.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the detachable assembly of the main body component and the jet component, it is convenient for internal cleaning, maintenance, and replacement of parts; and through the form of assembly, with the help of the jet component, sewage can enter and automatically extract air for mixing by means of the flow rate, achieving the first gas-liquid mixing, which helps ammonia nitrogen stripping; and when the jet is compressed and ejected, the flow rate is increased and the corresponding stirring fan blades are impacted, prompting the stirring fan blades to rotate under force and then scattering and impacting the discharged liquid, achieving the second promotion of contact and mixing with air; secondly, the liquid drops to the bottom of the tower tank due to gravity and accumulates. The jet pipe in the stirring structure can be rotated, and the force of rotation is used to make the larger-diameter end of the jet pipe enter the liquid and flow out at an accelerated speed from the smaller-diameter end, achieving stirring and the flow of the liquid, and also generating suction due to the flow of the liquid to extract the air in the tower tank from the second air pipe for the third mixing and realizing the fourth-side mixing with the rotation of the stirring, generating more bubbles; moreover, it can also be connected to a blower for oxygen supply through an aeration valve; if not connected to a blower, the energy consumption can be saved and the stripping effect can be improved by means of multiple mixing effects; since sewage with different concentrations and different temperatures will affect ammonia nitrogen stripping; therefore, this equipment can also heat up or dissipate heat the internal sewage through a temperature control structure to improve the ammonia nitrogen stripping effect; in summary, the present invention has the following effects: 1. Advantages of modular design: The detachable assembly design of the main body and the jet component simplifies the internal cleaning, maintenance, and part replacement processes, reduces downtime; the component configuration can be flexibly adjusted according to treatment requirements to adapt to different working conditions or upgrades.

[0014] 2. Efficient gas-liquid mixing mechanism: (1) Jet self-priming mixing: Utilize the sewage flow rate to automatically suck air to complete the primary mixing without additional energy consumption; (2) Jet impact mixing: The high-speed jet drives the fan blades to rotate, and the liquid scatters and impacts to achieve secondary mixing; (3) Dynamic siphon mixing: The stirring structure generates a siphon effect through the rotation of the jet pipe to suck the air in the tower for the third mixing; (4) Swirl aeration mixing: The rotating stirrer continuously disperses bubbles to promote the fourth gas-liquid contact.

[0015] 3. Synergistic effect: Multi-stage mixing forms a microbubble group, greatly increasing the gas-liquid interface area, improving the ammonia nitrogen mass transfer efficiency, relying on fluid dynamics to achieve the first three stages of mixing, reducing the dependence on the aeration blower, comprehensively saving energy, and can be switched to the blower aeration mode to cope with high-concentration sewage, with strong adaptability.

[0016] In summary, through the combination of physical mixing innovation and intelligent control, the present invention is superior to traditional stripping towers in terms of energy efficiency ratio, treatment effect, and operation and maintenance costs, and is especially suitable for small and medium-sized sewage treatment scenarios sensitive to energy consumption. Brief Description of the Drawings

[0017] Figure 1Schematic diagram of the first assembly structure of the present invention; Figure 2 Schematic diagram of the second assembly structure of the present invention; Figure 3 Schematic diagram of the planing structure of the main structure of the present invention; Figure 4 Schematic diagram of the stirring structure of the present invention; Figure 5 Schematic diagram of the split structure of the temperature control structure of the present invention; Figure 6 Schematic diagram of the assembled structure of the temperature control structure; Figure 7 is Figure 3 Partial enlarged structure diagram at position A in Figure 8 is Figure 4 Partial enlarged structure diagram at position B in

[0018] In the figure: 1. Main body assembly, 11. Tower tank, 12. Legs, 13. Exhaust port, 14. Drain port, 15. Aeration valve, 16. Temperature detector, 17. Concentration detector, 2. Jet assembly, 21. Liquid inlet pipe, 22. Throat pipe, 23. Clamping seat, 24. Tail pipe, 25. Axle bracket, 26. Stirring fan blade, 27. First air pipe, 28. Flow valve, 29. First buckle plate, 30. Sleeve bracket, 4. Stirring structure, 41. First motor, 42. Stirring frame, 43. Injection pipe, 44. Blocking cap, 45. Second air pipe, 5. Temperature control structure, 51. Cover cylinder, 52. Second buckle plate, 53. Partition board, 54. Second motor, 55. Frame plate, 56. Heat conducting sheet, 57. Electric heating rod, 58. Return box, 59. Heat dissipation fan, 60. Drain valve, 6. Feed inlet, 7. Heating port, 8. Air hole. Detailed implementation mode

[0019] Next, the attached drawings in the embodiments of the present invention will be Figures 1 - 8 described in further detail: As Figures 1 - 2 shown, the present invention provides a technical solution: a combined multi-stage stripping tower, including a main structure, a stirring structure 4 and a temperature control structure 5. The stirring structure 4 is fixedly arranged at the bottom end of the main structure, and the temperature control structure 5 is detachably arranged on the right side arm at the bottom of the main structure. Among them, the main structure is used to carry sewage and perform secondary gas-liquid mixing to enhance the ammonia nitrogen stripping effect. The stirring structure 4 is used to stir the liquid stored at the bottom of the main structure and perform a third gas-liquid mixing to assist stripping. The temperature control structure 5 is used to adjust the temperature of the internal liquid, which helps to achieve efficient stripping in different density states.

[0020] As Figure 3As shown in the figure, the main structure includes a main component 1 and a jet component 2; the main component 1 is used for centralized storage and discharge of liquid, and the jet component 2 is detachably arranged in the main component 1. The jet component 2 is used for sewage input and secondary gas-liquid mixing.

[0021] As Figure 3 shown, the main component 1 includes a tower tank 11, two pairs of legs 12, an exhaust port 13, a drain port 14, an aeration valve 15, a temperature detector 16, and a concentration detector 17; the tower tank 11 is a cylindrical structure, and a water inlet is provided in the middle of the upper wall of the tower tank 11. An arc-shaped feeding port is provided on the left side wall near the top of the tower tank 11, and a heating port is provided on the right side wall near the bottom of the tower tank 11. One end of each of the two pairs of legs 12 is fixedly arranged on the lower wall of the tower tank 11 at equal intervals. One end of the exhaust port 13 is fixedly connected to the right side wall at the top of the tower tank 11, one end of the drain port 14 is fixedly connected to the left side wall at the bottom of the tower tank 11, one end of the aeration valve 15 is fixedly connected to the right side wall at the bottom of the tower tank 11, and the aeration valve 15 is located below the heating port. The temperature detector 16 is fixedly arranged on the inner wall at the bottom of the tower tank 11, and the concentration detector 17 is fixedly arranged on the inner wall at the bottom of the tower tank 11; the tower tank 11 is supported by the legs 12, the tower tank 11 is used for loading, the exhaust port 13 is used for discharging ammonia nitrogen, the drain port 14 discharges sewage, the aeration valve 15 can be connected to a blower for oxygen supply, the temperature detector 16 detects the temperature, and the concentration detector 17 detects the ammonia nitrogen concentration of the sewage.

[0022] As Figure 3 and Figure 7As shown in the figure, the jet assembly 2 includes a liquid inlet pipe 21, a throat pipe 22, a pair of clamping seats 23, a tail pipe 24, a shaft frame 25, a stirring fan blade 26, a first air pipe 27, a flow valve 28, a first clamping plate 29, and a sleeve frame 30; one end of the liquid inlet pipe 21 is detachably screwed into the water inlet at the top end of the tower tank 11. A flange is provided at the top end of the liquid inlet pipe 21, and the diameter of the bottom end of the liquid inlet pipe 21 is smaller than that of the top end. A retaining edge is provided on the outer side wall of the bottom end of the liquid inlet pipe 21. The throat pipe 22 is a convex pipe body, and the diameter of one end of the throat pipe 22 is the same as that of the bottom end of the liquid inlet pipe 21. A thread is provided at the bottom end of the throat pipe 22, and an air inlet interface is provided on the left side wall in the middle of the throat pipe 22. One end of the throat pipe 22 is detachably arranged on the bottom end of the liquid inlet pipe 21. A pair of clamping seats 23 are symmetrically arranged on the upper wall of one end of the throat pipe 22, and the clamping seats 23 are both arc-shaped. The pair of clamping seats 23 are respectively movably clamped on the retaining edge at the bottom end of the liquid inlet pipe 21. The tail pipe 24 is a funnel-shaped structure, and one end of the tail pipe 24 is detachably screwed onto the other end of the throat pipe 22. The shaft frame 25 is fixedly arranged in the middle of the tail pipe 24. The stirring fan blade 26 is movably arranged in the middle of the shaft frame 25, and the stirring fan blade 26 can rotate. One end of the first air pipe 27 is detachably screwed onto the air inlet interface in the middle of the throat pipe 22, and the other end of the first air pipe 27 is located on the left side of the tower tank 11. The flow valve 28 is fixedly arranged on the other end of the first air pipe 27. The first clamping plate 29 is detachably buckled at the feeding port part on the left side wall of the tower tank 11, and the first clamping plate 29 is sleeved on one end of the first air pipe 27. The first clamping plate 29 fits with the tower tank 11. One end of the sleeve frame 30 is fixedly arranged on the right side wall of the first clamping plate 29, and the other end of the sleeve frame 30 is detachably sleeved on the throat pipe 22; sewage enters through the liquid inlet pipe 21, the flow rate of the sewage is increased and suction is generated through the throat pipe 22, air is mixed by pumping through the first air pipe 27, and it is sprayed out in all directions through the tail pipe 24, and the sewage is dispersed by means of the stirring fan blade 26.

[0023] As Figure 4 and Figure 8As shown, the stirring structure 4 includes a first motor 41, a stirring frame 42, a pair of injection tubes 43, a pair of blocking caps 44, and a pair of second air tubes 45; the first motor 41 is fixedly arranged in the middle of the lower wall of the tower tank 11, and the driving end of the first motor 41 movably penetrates through the lower wall of the tower tank 11. The middle of the stirring frame 42 is fixedly sleeved on the driving end of the first motor 41. The pair of injection tubes 43 are both funnel-shaped structures, and the diameter of one end of the injection tube 43 is larger than that of the other end. One end of the pair of injection tubes 43 is symmetrically arranged at both ends of the stirring frame 42 in the counterclockwise direction. The pair of blocking caps 44 are respectively detachably screwed onto the other ends of the injection tubes 43. The pair of blocking caps 44 are tube structures, and the middle of the blocking cap 44 is a hexagonal prism structure. A number of wire meshes are arranged at equal distances in the opposite directions at the middle parts of both ends of the pair of blocking caps 44. The wire meshes are used to disrupt the water flow. One end of the pair of second air tubes 45 is respectively fixedly connected to the upper arm of the other end of the injection tube 43, and the other end of the second air tube 45 is located above the liquid level; the first motor 41 drives the injection tubes 43 on the stirring frame 42 to rotate, sucks the air in the tower tank 11 through the injection tubes 43 for mixing, and promotes the flow of the internal liquid, and a large number of bubbles and disrupted water flow are generated by means of the blocking caps 44.

[0024] As Figure 5 and Figure 6As shown in the figure, the temperature control structure 5 includes a cover cylinder 51, a pair of second buckle plates 52, a partition plate 53, a second motor 54, a frame plate 55, a plurality of heat conduction fins 56, an electric heating rod 57, a reflux box 58, a cooling fan 59 and a drain valve 60; a liquid contact port is opened in the middle of the left side arm of the cover cylinder 51 near the top, the left end of the cover cylinder 51 is movably inserted into the heating port, and the liquid contact port is communicated with the tower tank 11. A pair of second buckle plates 52 are symmetrically arranged on the front and rear side walls of the cover cylinder 51 respectively, and the second buckle plates 52 are fitted with the heating port of the tower tank 11. The other ends of the second buckle plates 52 are detachably arranged on the tower tank 11 respectively. The partition plate 53 is fixedly arranged in the cover cylinder 51 and is located at the bottom part of the liquid contact port. The second motor 54 is fixedly arranged in the middle of the inner lower wall of the bottom end of the cover cylinder 51, and the driving end of the second motor 54 movably penetrates through the middle of the partition plate 53. The frame plate 55 is fixedly arranged on the driving end of the second motor 54, and the frame plate 55 is movably embedded in the cover cylinder 51, and the frame plate 55 rotates in the cover cylinder 51 through the second motor 54. The left and right ends of the frame plate 55 are respectively in contact with the inside of the cover cylinder 51. A plurality of heat conduction fins 56 penetrate through the middle of the frame plate 55 at equal intervals respectively, and the heat conduction fins 56 rotate through the frame plate 55. The two ends of the heat conduction fins 56 are respectively in contact with the inside of the cover cylinder 51. The electric heating rod 57 fixedly penetrates through one end of a plurality of heat conduction fins 56. The reflux box 58 is fixedly arranged on the right side wall of the cover cylinder 51, and the bottom end of the reflux box 58 is fitted with the upper wall of the partition plate 53. The left side wall of the reflux box 58 is communicated with the cover cylinder 51, and a plurality of air holes are arranged at equal intervals on the upper wall of the reflux box 58. The cooling fan 59 is fixedly embedded in the right side wall of the reflux box 58 and is near the middle of the top end. One end of the drain valve 60 is fixedly connected to the bottom end of the right side wall of the reflux box 58; the cover cylinder 51 is installed on the tower tank 11 through the second buckle plates 52. With the communication between the cover cylinder 51 and the tower tank 11, the internal heat conduction fins 56 and the electric heating rod 57 can be in contact with the sewage. The electric heating rod 57 can raise the temperature of the sewage. The heat conduction fins 56 help to dissipate the heat of the electric heating rod 57 or absorb the temperature of the sewage. The cooling fan 59 is used to dissipate the heat of one end of the heat conduction fins 56 without the electric heating rod 57, thereby reducing the temperature of the internal sewage. Since the heat conduction fins and the electric heating rod 57 rotate in the cover cylinder 51 through the second motor 54, a small amount of sewage will be driven into the cover cylinder 51 during the rotation. At this time, it can be discharged through the drain valve 60.

[0025] As a preferred solution, further, the electric heating rod 57 rotates 180 degrees in the cover cylinder 51 through the second motor 54, and the electric heating rod 57 can be located in the tower tank 11 for temperature control use requirements.

[0026] As a preferred solution, further, the stirring fan blade 26 can rotate by the downward impact of the water flow, and is used to disperse the accelerated flowing out liquid according to the design requirements.

[0027] As a preferred solution, furthermore, when water flows through the liquid inlet pipe 21 and enters the throat pipe 22 with a fast flow rate, external air will enter through the first air pipe 27 and be cut and mixed by the water flow, so as to realize automatic suction for design requirements.

[0028] Working principle: Step 1. Input sewage through the jet component 2 of the device, that is, the sewage enters through the liquid inlet pipe 21, is compressed through the throat pipe 22 with a reduced diameter to increase the flow rate, and generates suction to automatically extract external air through the first air pipe 27 to realize the first gas-liquid mixing; then it is sprayed out through the throat pipe 22 into the tail pipe 24, blocked by the stirring fan blade 26 on the shaft frame 25, and driven by the impact of the water flow, the stirring fan blade 26 rotates and the water flow impacts and scatters into the bottom of the tower tank 11 of the main body component 1. Step 2. Supported by the legs 12, the tower tank 11 has a certain height from the ground at the bottom. Thus, the first motor 41 located on the lower wall of the tower tank 11 can be driven to drive the spray pipes 43 symmetrically arranged on the stirring frame 42 in the stirring structure 4 to rotate. With the shape of the spray pipes 43, the sewage stored inside can be stirred. As the liquid rotates and flows out quickly through the spray pipes 43, it is shunted and cut by the blocking cap 44. At the same time, with the generation of the flow rate, air inside the tower tank 11 is sucked through the second air pipe 45 and enters the spray pipes 43. With the cutting and rotation of the blocking cap 44, a large number of bubbles and agitation are generated, further improving the gas-liquid mixing for ammonia stripping. Step 3. The liquid after stripping is discharged through the drain port 14 at the bottom and enters the next process for treatment, while the stripped ammonia nitrogen is discharged and treated with the air through the exhaust port 13; and during the stripping process, the temperature of the sewage is detected by the temperature detector 16, and the ammonia nitrogen concentration is detected by the concentration detector 17. Step 4. The device can also be connected to a blower through the aeration valve 15 to provide a large amount of air for the internal liquid to strengthen the stripping with agitation. Step 5. If the sewage concentration or temperature changes, the temperature control structure 5 can be driven to increase or decrease the sewage temperature, which is beneficial to improving the stripping effect; that is, the second motor 54 in the cover cylinder 51 drives the rack plate 55 above the partition plate 53 to rotate. With the rotation of the rack plate 55 and the fit between the rack plate 55 and the heat conducting fins 56 and the inner wall of the cover cylinder 51, there will be a certain amount of sewage between each heat conducting fin 56 and between the heat conducting fins 56 and the two ends of the rack plate 55 flowing into the bottom of the return tank 58 inside the cover cylinder 51. The sewage here can be connected and discharged through the drain valve 60 for treatment, thereby realizing the orientation adjustment of the heating rod 57. Step 6. When the electric heating rod 57 is located inside the tower tank 11, it can come into contact with the sewage for heating. When the electric heating rod 57 faces the reflux tank 58, the heat of the sewage is absorbed through the heat conduction sheet 56 and conducted to one end of the electric heating rod 57. Then, by the rotation of the heat dissipation fan 59, the external air enters through the air holes 7 to contact the heat conduction sheet 56 and take away the heat for cooling. Controlling the temperature helps the effective stripping of ammonia nitrogen from sewage with different concentrations; Step 7. When the equipment is maintained, the first air pipe 27 can be disassembled from the throat pipe 22 first, and then the first buckle plate 29 is disassembled. The throat pipe 22 is driven by the sleeve 30 to be separated from the liquid inlet pipe 21, that is, the clamping seat 23 is separated from the edge of the liquid inlet pipe 21, and then it can be disassembled. At the same time, the tail pipe 24 is taken out from the input port 6; Step 8. By disassembling the second buckle plate 52, the cover cylinder 51 is disassembled from the tower tank 11, and the overall temperature control structure 5 is disassembled, and the stirring structure 4 can be cleaned and maintained.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. A combined multi-stage stripping tower, characterized in that, It includes a main structure, a stirring structure (4) and a temperature control structure (5). The stirring structure (4) is fixedly arranged at the bottom end of the main structure, and the temperature control structure (5) is detachably installed on the right side arm at the bottom of the main structure; Among them, the main structure is used to carry sewage and perform secondary gas-liquid mixing to enhance the ammonia nitrogen stripping effect. The stirring structure (4) is used to stir the liquid stored at the bottom inside the main structure and perform the third gas-liquid mixing to assist stripping; the temperature control structure (5) is used to adjust the temperature of the internal liquid, which helps to achieve efficient stripping in different density states.

2. The combined multi-stage stripping tower according to claim 1, wherein, The main structure includes a main body component (1) and a jet component (2); the main body component (1) is used to centrally store and discharge liquid, and the jet component (2) is detachably installed inside the main body component (1), and the jet component (2) is used for sewage input and secondary gas-liquid mixing.

3. The combined multi-stage stripping tower according to claim 2, characterized in that, The main body component (1) includes a tower tank (11), two pairs of legs (12), an exhaust port (13), a liquid discharge port (14), an aeration valve (15), a temperature detector (16) and a concentration detector (17); The tower tank (11) is of a cylindrical structure, and there is a water inlet in the middle of the upper wall of the tower tank (11). There is an arc-shaped feeding port on the left side wall near the top of the tower tank (11), and a heating port on the right side wall near the bottom of the tower tank (11). One end of each of the two pairs of legs (12) is fixedly arranged equidistantly on the lower wall of the tower tank (11). One end of the exhaust port (13) is fixedly connected to the right side wall at the top of the tower tank (11). One end of the liquid discharge port (14) is fixedly connected to the left side wall at the bottom of the tower tank (11). One end of the aeration valve (15) is fixedly connected to the right side wall at the bottom of the tower tank (11), and the aeration valve (15) is located below the heating port. The temperature detector (16) is fixedly arranged on the inner side wall at the bottom of the tower tank (11), and the concentration detector (17) is fixedly arranged on the inner side wall at the bottom of the tower tank (11).

4. The combined multi-stage stripping tower according to claim 3, characterized in that, The jet component (2) includes a liquid inlet pipe (21), a throat pipe (22), a pair of clamping seats (23), a tail pipe (24), a shaft frame (25), a stirring fan blade (26), a first air pipe (27), a flow valve (28), a first clamping plate (29) and a sleeve frame (30); One end of the liquid inlet pipe (21) is detachably screwed into the water inlet at the top of the tower tank (11). A flange is provided at the top of the liquid inlet pipe (21), and the diameter of the bottom end of the liquid inlet pipe (21) is smaller than that of the top end. A retaining edge is provided on the outer side wall of the bottom end of the liquid inlet pipe (21). The throat pipe (22) is a convex pipe body, and the diameter of one end of the throat pipe (22) is the same as that of the bottom end of the liquid inlet pipe (21). A thread is provided at the bottom end of the throat pipe (22), and an air inlet interface is provided on the left side wall in the middle of the throat pipe (22). One end of the throat pipe (22) is detachably installed on the bottom end of the liquid inlet pipe (21). A pair of clamping seats (23) are symmetrically arranged on the upper wall of one end of the throat pipe (22), and the clamping seats (23) are both arc-shaped. A pair of clamping seats (23) are respectively movably clamped on the retaining edge at the bottom end of the liquid inlet pipe (21). The tail pipe (24) is a funnel-shaped structure. One end of the tail pipe (24) is detachably screwed onto the other end of the throat pipe (22). The shaft frame (25) is fixedly arranged in the middle of the tail pipe (24). The stirring fan blade (26) is movably arranged in the middle of the shaft frame (25), and the stirring fan blade (26) can rotate. One end of the first air pipe (27) is detachably screwed onto the air inlet interface in the middle of the throat pipe (22), and the other end of the first air pipe (27) is located on the left side of the tower tank (11). The flow valve (28) is fixedly arranged on the other end of the first air pipe (27). The first clamping plate (29) is detachably buckled on the feeding port part of the left side wall of the tower tank (11), and the first clamping plate (29) is sleeved on one end of the first air pipe (27). The first clamping plate (29) fits with the tower tank (11). One end of the sleeve frame (30) is fixedly arranged on the right side wall of the first clamping plate (29), and the other end of the sleeve frame (30) is detachably sleeved on the throat pipe (22).

5. The combined multi-stage stripping tower according to claim 4, wherein, The stirring structure (4) includes a first motor (41), a stirring frame (42), a pair of spray pipes (43), a pair of blocking caps (44), and a pair of second air pipes (45); The first motor (41) is fixedly arranged in the middle of the lower wall of the tower tank (11), and the driving end of the first motor (41) movably penetrates through the lower wall of the tower tank (11). The middle of the stirring frame (42) is fixedly sleeved on the driving end of the first motor (41). Are both of the pair of spray pipes (43) funnel-shaped structures, and the diameter of one end of the spray pipe (43) is larger than that of the other end. One end of the pair of spray pipes (43) is symmetrically arranged at both ends of the stirring frame (42) in the counterclockwise direction. A pair of blocking caps (44) are respectively detachably screwed onto the other ends of the spray pipes (43). The pair of blocking caps (44) are pipe body structures, and the middle of the blocking caps (44) is a hexagonal prism structure. A number of wire meshes are arranged at equal distances in the reverse direction in the middle of both ends of the pair of blocking caps (44). The wire meshes are used to disrupt the water flow. One end of each of the pair of second air pipes (45) is fixedly connected to the upper arm of the other end of the spray pipe (43), and the other end of the second air pipe (45) is located above the liquid level.

6. The combined multi-stage stripping tower according to claim 5, characterized in that, The temperature control structure (5) includes a cover cylinder (51), a pair of second clamping plates (52), a partition plate (53), a second motor (54), a support plate (55), a number of heat conduction fins (56), an electric heating rod (57), a reflux box (58), a cooling fan (59), and a drainage valve (60); A liquid contact port is formed in the middle near the top of the left side arm of the cover cylinder (51). The left end of the cover cylinder (51) is movably inserted into the heating port, and the liquid contact port communicates with the tower tank (11). A pair of the second clamping plates (52) are symmetrically arranged on the front and rear side walls of the cover cylinder (51) respectively, and the second clamping plates (52) are fitted with the heating port of the tower tank (11). The other ends of the second clamping plates (52) are detachably arranged on the tower tank (11). The partition plate (53) is fixedly arranged in the cover cylinder (51) and located at the bottom part of the liquid contact port. The second motor (54) is fixedly arranged in the middle of the inner lower wall at the bottom end of the cover cylinder (51), and the driving end of the second motor (54) movably penetrates through the middle of the partition plate (53). The support plate (55) is fixedly arranged on the driving end of the second motor (54), and the support plate (55) is movably embedded in the cover cylinder (51), and the support plate (55) rotates in the cover cylinder (51) through the second motor (54). The left and right ends of the support plate (55) are respectively in contact with the inside of the cover cylinder (51). A number of the heat conduction fins (56) penetrate through the middle of the support plate (55) at equal intervals respectively, and the heat conduction fins (56) rotate through the support plate (55). The two ends of the heat conduction fins (56) are respectively in contact with the inside of the cover cylinder (51). The electric heating rod (57) fixedly penetrates through one ends of a number of the heat conduction fins (56). The reflux box (58) is fixedly arranged on the right side wall of the cover cylinder (51), and the bottom end of the reflux box (58) is fitted with the upper wall of the partition plate (53). The left side wall of the reflux box (58) is communicated with the cover cylinder (51), and a number of air holes are arranged at equal intervals on the upper wall of the reflux box (58). The cooling fan (59) is fixedly embedded in the right side wall of the reflux box (58) and near the middle of the top end. One end of the drainage valve (60) is fixedly connected to the bottom end of the right side wall of the reflux box (58).

7. The combined multi-stage stripping tower according to claim 6, wherein, The electric heating rod (57) rotates 180 degrees in the cover cylinder (51) through the second motor (54), and the electric heating rod (57) can be located in the tower tank (11).

8. The combined multi-stage stripping tower according to claim 7, characterized in that, The stirring fan blade (26) can rotate by the downward impact of water flow.

9. The combined multi-stage stripping tower according to claim 8, wherein, When water flow enters through the liquid inlet pipe (21) and rapidly flows through the throat pipe (22), external air will enter through the first air pipe (27) and be cut and mixed by the water flow.

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