Polytetrafluoroethylene membrane method ammonia distillation device

Abstract

The utility model relates to the technical field of ammonia distillation equipment, and discloses a polytetrafluoroethylene membrane method ammonia distillation device which comprises an ammonia distillation tower, an exhaust pipe is fixedly embedded in the top end of the ammonia distillation tower, a driving box is fixedly connected to the lower surface of the ammonia distillation tower, and an air inlet pipe is fixedly installed on the side face of the driving box; a spraying disc is fixedly connected to the inner wall of the ammonia still, and the spraying disc is of a hollow box body structure. According to the ammonia still, the spraying disc is arranged in the ammonia still, a plurality of spraying heads on the surface of the spraying disc can uniformly distribute liquid in the ammonia still, then the extension pipe is driven to rotate in the ammonia still by utilizing the rotary supporting pipe, and meanwhile, water vapor is rotatably distributed in the ammonia still by utilizing a plurality of air outlet holes in the surface of the extension pipe; according to the ammonia distillation tower, gas and liquid are in countercurrent contact and can be fully and uniformly combined, so that ammonia gas is gradually released from spraying liquid, a mixture of ammonia steam and water vapor is obtained at the top of the ammonia distillation tower, and the extraction efficiency of the ammonia gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia distillation equipment, and more specifically to a polytetrafluoroethylene membrane method ammonia distillation device. Background Art

[0002] The polytetrafluoroethylene (PTFE) membrane process is a technology that utilizes microporous films made of polytetrafluoroethylene (PTFE) for various applications. The ammonia still, a subunit of the desorption tower, is an operating device that volatilizes and releases ammonia dissolved in the circulating water through heat transfer from a heat carrier. The still uses water vapor, a common heat carrier, as a heating agent, ensuring that the equilibrium vapor pressure of ammonia at the circulating water level is greater than the partial pressure of ammonia in the heat carrier. The gas and liquid combine to conduct mass and heat transfer, gradually releasing the ammonia from the circulating water.

[0003] Publication No. CN221296258U discloses an ammonia distillation device comprising a skirt, a cylinder fixedly connected to its upper end, a lower head fixedly connected to its bottom, a splitter fixedly connected to its upper end, and a fixed tube sheet heat exchanger. A wastewater heating device is provided at the side of the cylinder, and a heated wastewater inlet pipe fixedly connected to the interior of the cylinder, with a nozzle fixedly connected to its lower end. This utility model can quickly remove ammonia from wastewater, improving wastewater treatment efficiency.

[0004] During actual use of the ammonia evaporation device proposed in the above patent document, water vapor cannot be effectively and evenly distributed after being input into the ammonia evaporation tower, resulting in uneven gas-liquid combination, insufficient gas-liquid combination, and affecting the efficiency of ammonia vapor generation. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a polytetrafluoroethylene membrane method ammonia distillation device to solve the problems existing in the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a polytetrafluoroethylene membrane method ammonia distillation device, comprising an ammonia distillation tower, the top of which is fixedly embedded with an exhaust pipe, the lower surface of which is fixedly connected to a drive box, and the side of which is fixedly installed with an air inlet pipe;

[0007] The inner wall of the ammonia still is fixedly connected to a spray plate, which is a hollow box structure, and a plurality of spray heads are fixedly embedded on the lower surface of the spray plate. Two arc-shaped air vents are provided on the surface of the spray plate;

[0008] The inner wall of the ammonia still is fixedly provided with a mounting baffle, the surface of the mounting baffle is fixedly provided with an annular filter screen, and the annular filter screen and the mounting baffle are both located below the spray plate;

[0009] The inner bottom wall of the ammonia evaporation tower is rotatably connected to a rotating support tube, and the surface of the rotating support tube is fixedly connected to two extension tubes symmetrically positioned to each other. The extension tubes are in a downwardly inclined shape, and a plurality of air outlet holes are provided on the surface of the extension tubes. Two support arms are fixedly connected to the surface of the extension tubes, and one end of the support arm away from the extension tube is fixedly connected to a movable frame, and a strip brush is fixedly provided on the lower surface of the movable frame.

[0010] Furthermore, the movable frame is located below the mounting partition, and the strip brush overlaps with the lower surface of the annular filter screen, and the strip brush is used to clean the surface of the annular filter screen.

[0011] Furthermore, a plurality of flow guide covers are fixedly connected to the surface of the extension tube, and the positions of the flow guide covers correspond to the air outlet holes.

[0012] Furthermore, a driving motor is fixedly provided on the inner bottom wall of the driving box, and an output shaft of the driving motor is fixedly connected to a driving gear.

[0013] Furthermore, the bottom end of the rotation support tube extends to the interior of the drive box, and a driven gear is fixed on the surface of the rotation support tube, and the driving gear is meshed with the driven gear.

[0014] Furthermore, a reinforcing connecting rod is fixedly connected between the extension tube and the rotating support tube, the output end of the air intake pipe extends to the interior of the drive box and is rotatably connected to the bottom end of the rotating support tube, and the air intake pipe is used to input water vapor into the interior of the rotating support tube.

[0015] Furthermore, a circulating delivery pump is fixedly installed on the back of the ammonia evaporation tower, and the output end of the circulating delivery pump is fixedly connected to a liquid guide pipe. The end of the liquid guide pipe away from the circulating delivery pump extends to the interior of the ammonia evaporation tower and is fixedly connected to the input end of the spray plate.

[0016] Furthermore, the output end of the circulating delivery pump is fixedly connected to a circulating water pipe, and one end of the circulating water pipe away from the circulating delivery pump extends downward to the interior of the ammonia distillation tower.

[0017] The technical effects and advantages of this utility model are:

[0018] 1. The utility model provides a spray plate inside the ammonia still tower, and can use a plurality of spray heads on the surface of the spray plate to evenly distribute the liquid inside the ammonia still tower. Then, a rotating support tube is used to drive the extension tube to rotate inside the ammonia still tower. At the same time, a plurality of air outlet holes on the surface of the extension tube are used to rotate and distribute the water vapor inside the ammonia still tower, so that the gas and liquid are in countercurrent contact and can be fully and evenly combined, so that ammonia is gradually released from the spray liquid, and a mixture of ammonia vapor and water vapor is obtained at the top of the ammonia still tower, thereby improving the extraction efficiency of ammonia.

[0019] 2. The utility model provides a movable frame and a strip brush on the top of the rotating support tube. During the rotation of the rotating support tube, the movable frame can be driven to rotate at the same time, and then the strip brush can be used to clean the surface of the annular filter to avoid clogging of the annular filter. By providing a flow guide cover on the surface of the extension tube, the flow guide cover can be used to shield the air outlet to prevent the liquid generated by the spraying from directly entering the air outlet and affecting the gas output. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 2 This is a rear view structural diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the spray plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the partial cross-section structure of the ammonia still tower of the utility model;

[0024] Figure 5 This is a partially enlarged structural diagram of the extension tube of the utility model;

[0025] Figure 6 This is a schematic diagram of the front cross-section structure of the drive box of the utility model.

[0026] The accompanying drawings are marked as follows: 1. Ammonia distillation tower; 2. Exhaust pipe; 3. Drive box; 4. Air inlet pipe; 5. Spray disc; 6. Spray head; 7. Arc vent; 8. Mounting partition; 9. Annular filter; 10. Rotating support pipe; 11. Extension pipe; 12. Air outlet; 13. Support arm; 14. Movable frame; 15. Strip brush; 16. Air deflector; 17. Drive motor; 18. Drive gear; 19. Driven gear; 20. Reinforced connecting rod; 21. Circulating delivery pump; 22. Liquid guide pipe; 23. Circulating water pipe. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The polytetrafluoroethylene membrane ammonia evaporation device involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work fall within the scope of protection of the present invention.

[0028] Reference Figure 1-6The utility model provides a polytetrafluoroethylene membrane method ammonia distillation device, including an ammonia distillation tower 1, an exhaust pipe 2 is fixedly embedded in the top of the ammonia distillation tower 1, a drive box 3 is fixedly connected to the lower surface of the ammonia distillation tower 1, and an air inlet pipe 4 is fixedly installed on the side of the drive box 3.

[0029] A spray plate 5 is fixedly connected to the inner wall of the ammonia distillation tower 1. The spray plate 5 is a hollow box structure. A plurality of spray heads 6 are fixedly embedded on the lower surface of the spray plate 5. Two arc-shaped air vents 7 are provided on the surface of the spray plate 5.

[0030] It is worth noting, however, that by providing a spray plate 5 inside the ammonia evaporation tower 1, the liquid can be evenly distributed inside the ammonia evaporation tower 1 using a plurality of spray heads 6 on the surface of the spray plate 5, and the arc-shaped air vents 7 on the surface of the spray plate 5 can be used to allow the gas generated after ammonia evaporation to pass through the arc-shaped air vents 7 upward into the top of the tower, thereby facilitating the use of the exhaust pipe 2 to discharge the gas.

[0031] A circulating delivery pump 21 is fixedly installed on the back of the ammonia still 1, and the output end of the circulating delivery pump 21 is fixedly connected to a liquid guide pipe 22, and the end of the liquid guide pipe 22 away from the circulating delivery pump 21 extends to the interior of the ammonia still 1, and is fixedly connected to the input end of the spray plate 5, and the output end of the circulating delivery pump 21 is fixedly connected to a circulating water pipe 23, and the end of the circulating water pipe 23 away from the circulating delivery pump 21 extends downward to the interior of the ammonia still 1.

[0032] A mounting baffle 8 is fixedly provided on the inner wall of the ammonia distillation tower 1 , and an annular filter screen 9 is fixedly installed on the surface of the mounting baffle 8 . Both the annular filter screen 9 and the mounting baffle 8 are located below the spray plate 5 .

[0033] A rotating support pipe 10 is rotatably connected to the inner bottom wall of the ammonia distillation tower 1 , and a reinforcing connecting rod 20 is fixedly connected between the extension pipe 11 and the rotating support pipe 10 .

[0034] A driving motor 17 is fixedly installed on the inner bottom wall of the driving box 3, and the output shaft of the driving motor 17 is fixedly connected to the driving gear 18. The bottom end of the rotating support tube 10 extends to the interior of the driving box 3, and a driven gear 19 is fixed on the surface of the rotating support tube 10, and the driving gear 18 is engaged with the driven gear 19.

[0035] The output end of the air inlet pipe 4 extends to the interior of the driving box 3 and is rotatably connected to the bottom end of the rotating support tube 10 . The air inlet pipe 4 is used to input water vapor into the interior of the rotating support tube 10 .

[0036] Two extension tubes 11 symmetrically positioned to each other are fixedly connected to the surface of the rotating support tube 10. The extension tubes 11 are in a downwardly inclined shape, and a plurality of air outlet holes 12 are provided on the surface of the extension tube 11. A plurality of flow guide covers 16 are fixedly connected to the surface of the extension tube 11. The positions of the flow guide covers 16 correspond to the air outlet holes 12. By arranging the flow guide covers 16 on the surface of the extension tube 11, the flow guide covers 16 can be used to block the air outlet holes 12 to prevent the liquid generated by the spraying from directly entering the air outlet holes 12 and affecting the gas output.

[0037] It is worth noting that the extension tube 11 is driven to rotate inside the ammonia evaporation tower 1 by rotating the support tube 10, and at the same time, the water vapor is rotated and distributed inside the ammonia evaporation tower 1 by utilizing a plurality of air outlet holes 12 on the surface of the extension tube 11, so that the gas and liquid are in countercurrent contact and can be fully and evenly combined, so that ammonia is gradually released from the spraying liquid, and a mixture of ammonia vapor and water vapor is obtained at the top of the ammonia evaporation tower 1, thereby improving the extraction efficiency of ammonia.

[0038] Two support arms 13 are fixedly connected to the surface of the extension tube 11 . One end of the support arm 13 away from the extension tube 11 is fixedly connected to a movable frame 14 . A strip brush 15 is fixedly provided on the lower surface of the movable frame 14 .

[0039] The movable frame 14 is located below the mounting partition 8 , and the strip brush 15 overlaps with the lower surface of the annular filter 9 , and the strip brush 15 is used to clean the surface of the annular filter 9 .

[0040] It is worth noting that by arranging a movable frame 14 and a strip brush 15 on the top of the rotating support tube 10, the movable frame 14 can be driven to rotate at the same time during the rotation of the rotating support tube 10, and then the strip brush 15 can be used to clean the surface of the annular filter 9 to avoid clogging of the annular filter 9.

[0041] Working principle: First, the circulating delivery pump 21 and the circulating water pipe 23 are used to transport the liquid at the bottom of the ammonia still 1 to the inside of the spray plate 5, and then the liquid is sprayed into the inside of the ammonia still 1 by using a plurality of spray heads 6 on the surface of the spray plate 5. Then, the heated high-temperature water vapor is input into the rotating support tube 10 by using the air inlet pipe 4, and the steam is sprayed out by using the air outlet 12 on the surface of the extension tube 11. At the same time, the driving motor 17 is used to drive the driving gear 18 to rotate, and then the driven gear 19 and the rotating support tube 10 are driven to rotate, and then the air outlet 12 is driven to rotate and spray steam, so that the water vapor can fully and evenly contact and combine with the liquid, thereby improving the efficiency of ammonia still.

[0042] Finally, it should be noted that the drawings of the disclosed embodiments of the present invention only involve structures related to the disclosed embodiments. The above is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A polytetrafluoroethylene membrane ammonia distillation device, comprising an ammonia distillation tower (1), characterized in that: An exhaust pipe (2) is fixedly embedded in the top of the ammonia evaporation tower (1), a drive box (3) is fixedly connected to the lower surface of the ammonia evaporation tower (1), and an air inlet pipe (4) is fixedly installed on the side of the drive box (3); A spray plate (5) is fixedly connected to the inner wall of the ammonia still (1), and the spray plate (5) is a box structure with a hollow interior. A plurality of spray heads (6) are fixedly embedded on the lower surface of the spray plate (5), and two arc-shaped air vents (7) are provided on the surface of the spray plate (5); The inner wall of the ammonia still (1) is fixedly provided with a mounting baffle (8), the surface of the mounting baffle (8) is fixedly provided with an annular filter (9), and the annular filter (9) and the mounting baffle (8) are both located below the spray plate (5); The inner bottom wall of the ammonia evaporation tower (1) is rotatably connected to a rotating support tube (10), and the surface of the rotating support tube (10) is fixedly connected to two mutually symmetrical extension tubes (11), and the extension tube (11) is in a downwardly inclined shape, and a plurality of air outlet holes (12) are provided on the surface of the extension tube (11), and the surface of the extension tube (11) is fixedly connected to two support arms (13), and one end of the support arm (13) away from the extension tube (11) is fixedly connected to a movable frame (14), and a strip brush (15) is fixedly provided on the lower surface of the movable frame (14).

2. The polytetrafluoroethylene membrane ammonia distillation device according to claim 1, characterized in that: The movable frame (14) is located below the mounting partition (8), and the strip brush (15) overlaps the lower surface of the annular filter (9). The strip brush (15) is used to clean the surface of the annular filter (9).

3. The polytetrafluoroethylene membrane ammonia distillation device according to claim 1, characterized in that: A plurality of flow guide covers (16) are fixedly connected to the surface of the extension tube (11), and the positions of the flow guide covers (16) correspond to the air outlet holes (12).

4. The polytetrafluoroethylene membrane ammonia distillation device according to claim 1, characterized in that: A driving motor (17) is fixedly provided on the inner bottom wall of the driving box (3), and an output shaft of the driving motor (17) is fixedly connected to a driving gear (18).

5. The polytetrafluoroethylene membrane ammonia distillation device according to claim 4, characterized in that: The bottom end of the rotating support tube (10) extends to the interior of the driving box (3), and a driven gear (19) is fixed on the surface of the rotating support tube (10), and the driving gear (18) is meshed with the driven gear (19).

6. The polytetrafluoroethylene membrane ammonia distillation device according to claim 1, characterized in that: A reinforcing connecting rod (20) is fixedly connected between the extension tube (11) and the rotating support tube (10); the output end of the air intake pipe (4) extends to the interior of the drive box (3) and is rotatably connected to the bottom end of the rotating support tube (10); and the air intake pipe (4) is used to input water vapor into the interior of the rotating support tube (10).

7. The polytetrafluoroethylene membrane ammonia distillation device according to claim 1, characterized in that: A circulating delivery pump (21) is fixedly installed on the back of the ammonia still (1), and a liquid guide tube (22) is fixedly connected to the output end of the circulating delivery pump (21). The end of the liquid guide tube (22) away from the circulating delivery pump (21) extends to the interior of the ammonia still (1) and is fixedly connected to the input end of the spray plate (5).

8. The polytetrafluoroethylene membrane ammonia distillation device according to claim 7, characterized in that: The output end of the circulating delivery pump (21) is fixedly connected to a circulating water pipe (23), and one end of the circulating water pipe (23) away from the circulating delivery pump (21) extends downward to the interior of the ammonia distillation tower (1).

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