A tail gas treatment device for monoammonium phosphate production equipment

Abstract

The invention relates to the technical field of tail gas treatment devices, and proposes a tail gas treatment device for monoammonium phosphate production equipment, wherein the tail gas is dynamically discharged from below the liquid level of a detergent, so that the amount of detergent is higher than the dissolution demand of the monoammonium phosphate dust in the tail gas, the treatment effect is good, and the recovery effect of the monoammonium phosphate is good, and the use is more flexible and reliable. The invention comprises a spray chamber, which is provided with a sewage outlet and a tail gas outlet, and also includes an air intake guide multi-bend pipe. The spray chamber is provided with a liquid replenishing port and a liquid level observation port. A disc rack is provided in the spray chamber, and a mounting drive shaft is fixedly connected to the top of the disc rack. A bearing hole is provided at the top of the spray chamber, and the mounting drive shaft is installed in the bearing hole through a thrust bearing. A servo motor for rotating the mounting drive shaft is installed at the top of the spray chamber, and a plurality of outer ring openings and a plurality of inner ring openings are provided on the disc rack. The plurality of outer ring openings are all connected to outer swing aeration pipes, and the plurality of inner ring openings are all connected to inner swing aeration pipes.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment devices, and in particular to a tail gas treatment device for monoammonium phosphate production equipment. Background Art

[0002] As is known to all, in the production process of monoammonium phosphate, the dust concentration at the drying tower outlet is relatively high, and most of the dust there is monoammonium phosphate finished product. Therefore, in order to improve the full utilization of materials and reduce environmental pollution, a tail gas treatment device for monoammonium phosphate production equipment is proposed.

[0003] After searching, it was found that a Chinese patent with publication number CN203061015U published on July 17, 2013, discloses a monoammonium phosphate tail gas treatment device, which is roughly described as including a venturi scrubber and a spray chamber connected to the venturi scrubber. The venturi scrubber is provided with a tail gas inlet, and the spray chamber is provided with several spray pipes. The tail gas of the monoammonium phosphate is dust-removed and cooled by the venturi scrubber, and part of the gas is absorbed. In order to make the tail gas of the monoammonium phosphate meet the emission standards and reduce the useful materials contained in the tail gas, the tail gas is washed by the venturi scrubber and then passes through the spray chamber. The washing liquid is sprayed through the spray pipe of the spray chamber to react chemically with the tail gas to generate new substances. When in use, the tail gas is washed by the venturi scrubber and then treated by the spray chamber. The purification effect is very good, the loss of materials is reduced, and the tail gas of the monoammonium phosphate can meet the emission standards.

[0004] Although the above-mentioned prior art solution can be used for treating exhaust gas during the operation of monoammonium phosphate production equipment, during its operation, the exhaust gas and the washing liquid are brought into contact by spraying the washing liquid to recover the monoammonium phosphate dust in the exhaust gas. Therefore, it is difficult to control the contact between the washing liquid and the exhaust gas during the spraying process of the washing liquid, which can easily cause uneven exhaust gas treatment effects, affect the recovery of monoammonium phosphate dust, and have low reliability. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the deficiencies of the prior art, the present invention provides a tail gas treatment device for monoammonium phosphate production equipment, in which the tail gas is dynamically discharged below the liquid level of the detergent, so that the amount of detergent is higher than the dissolution demand of the monoammonium phosphate dust in the tail gas, the treatment effect is better, and the recovery effect of the monoammonium phosphate is better, and the use is more flexible and reliable.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an exhaust gas treatment device for monoammonium phosphate production equipment, comprising a spray chamber, the spray chamber is provided with a sewage outlet and an exhaust gas outlet, and also includes an air intake guide multi-bend pipe, the spray chamber is provided with a liquid replenishment port and a liquid level observation port, a disc rack is provided in the spray chamber, the top of the disc rack is fixedly connected to a mounting drive shaft, a bearing hole is provided at the top of the spray chamber, the mounting drive shaft is installed in the bearing hole through a thrust bearing, a servo motor for rotating the mounting drive shaft is installed at the top of the spray chamber, and a plurality of outer ring openings and a plurality of inner ring openings are provided on the disc rack. Mouth, multiple outer ring mouths are rotatably connected with outer swinging aeration tubes, multiple inner ring mouths are rotatably connected with inner swinging aeration tubes, multiple outer swinging aeration tubes and multiple inner swinging aeration tubes are connected with the air inlet guide multi-bend pipes, an inner bending guide ring and an outer bending guide ring are fixedly connected to the inner bottom wall of the spray chamber, multiple inner connecting rings are provided on the inner bending guide ring, and multiple inner connecting rings are respectively connected to the bottom ends of multiple inner swinging aeration tubes, and multiple outer connecting rings are provided on the outer bending guide ring, and multiple outer connecting rings are respectively connected to the bottom ends of multiple outer swinging aeration tubes.

[0009] On the basis of the above scheme, an outer ventilation pipe ring and an inner ventilation pipe ring are provided in the spray chamber, and the outer ventilation pipe ring is connected to a plurality of outer flexible pipes, and the plurality of outer flexible pipes are respectively connected to a plurality of outer swinging aeration pipes, and the inner ventilation pipe ring is connected to a plurality of inner flexible pipes, and the plurality of inner flexible pipes are respectively connected to a plurality of inner swinging aeration pipes, and both the inner ventilation pipe ring and the outer ventilation pipe ring are connected to the air intake guide multi-bend pipe.

[0010] Preferably, based on the above scheme, the air intake guide multi-bend pipe is connected with a long diverter hard pipe and a short diverter hard pipe, the long diverter hard pipe is connected with the inner ventilation pipe ring, and the short diverter hard pipe is connected with the outer ventilation pipe ring.

[0011] Further on the basis of the above scheme, an insertion hole is opened on the spray chamber, the air intake guide multi-bend pipe is fixedly connected in the insertion hole, and the outer wall of the air intake guide multi-bend pipe and the inner wall of the insertion hole are sealed.

[0012] Further on the basis of the above-mentioned scheme, the top ends of the multiple inner connecting rings are fixedly connected with inner guide connecting rods, and the multiple inner guide connecting rods are respectively slidably matched with the multiple inner swinging aeration tubes, and inner springs are connected between the mutually matched inner guide connecting rods and the inner swinging aeration tubes. The top ends of the multiple outer connecting rings are fixedly connected with outer guide connecting rods, and the multiple outer guide connecting rods are respectively slidably matched with the multiple outer swinging aeration tubes, and outer springs are connected between the mutually matched outer guide connecting rods and the outer swinging aeration tubes.

[0013] Further to the above scheme, multiple inner swinging aeration tubes are fixedly connected to two inner connecting shafts, multiple inner ring openings are provided with two inner rotating grooves, multiple inner connecting shafts are rotatably connected in the multiple inner rotating grooves, multiple outer swinging aeration tubes are fixedly connected to two outer connecting shafts, multiple outer ring openings are provided with two outer rotating grooves, and multiple outer connecting shafts are rotatably connected in the multiple outer rotating grooves.

[0014] As a further embodiment of the above solution, the plurality of inner ring openings and the plurality of outer ring openings are arranged in an alternating manner at intervals in a ring shape.

[0015] As a further improvement of the above scheme, the outer bending guide ring and the inner bending guide ring are both fixedly connected to multiple support rods, and the multiple support rods are all fixedly connected to the inner bottom wall of the spray chamber. The outer bending guide ring and the inner bending guide ring both include multiple outer arc driving segments and multiple inner arc driving segments.

[0016] As a further improvement of the above solution, two bell mouths are provided on the inner connecting ring and the outer connecting ring.

[0017] As a further solution of the above solution, a plurality of annular supporting legs are provided at the bottom end of the spray chamber.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present invention provides a tail gas treatment device for monoammonium phosphate production equipment, which has the following beneficial effects:

[0020] 1. In the present invention, by setting up multiple external swing aeration tubes and multiple internal swing aeration tubes, multi-point guidance and discharge of tail gas are formed, and the tail gas is discharged below the liquid level of the detergent, so that the amount of detergent is higher than the dissolution demand of the monoammonium phosphate dust in the tail gas, and the treatment effect is better.

[0021] 2. In the present invention, a structure for installing and driving multiple outer swing aeration tubes and multiple inner swing aeration tubes is formed by the cooperation of a disc rack, a mounting drive shaft and a servo motor, so that the multiple outer swing aeration tubes and multiple inner swing aeration tubes can rotate back and forth in the spray chamber, so that the aeration points form a dynamic aeration effect, and the recovery effect of monoammonium phosphate is better.

[0022] 3. In the present invention, by providing the inner bending guide ring and the outer bending guide ring, it is convenient to adjust the relative distance between the top ends of the multiple outer swinging aeration tubes and the multiple inner swinging aeration tubes while the multiple outer swinging aeration tubes and the multiple inner swinging aeration tubes rotate and swing back and forth, thereby realizing the regulation of the relative distance between multiple adjacent aeration points, making the use more flexible and further improving the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0025] Figure 3 For the present invention Figure 1 Schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 4 For the present invention Figure 1 Schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 5 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 6 Schematic diagram of the exploded three-dimensional structure of the outer connecting ring, the outer guide connecting rod and the outer spring of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the inner bending guide ring, the outer bending guide ring and the support rod of the present invention.

[0030] In the figure: 1. Spray chamber; 2. Air intake guide multi-bend pipe; 3. Disc rack; 4. Mounting drive shaft; 5. Outer ring mouth; 6. Inner ring mouth; 7. Outer swing aeration pipe; 8. Inner swing aeration pipe; 9. Inner bending guide ring; 10. Outer bending guide ring; 11. Inner connecting ring; 12. Outer connecting ring; 13. Outer vent pipe ring; 14. Inner vent pipe ring; 15. Outer flexible pipe; 16. Inner flexible pipe; 17. Long diversion rigid pipe; 18. Short diversion rigid pipe; 19. Inner guide connecting rod; 20. Inner spring; 21. Outer guide connecting rod; 22. Outer spring; 23. Inner connecting shaft; 24. Outer connecting shaft; 25. Support rod; 26. Bell mouth; 27. Annular support leg. DETAILED DESCRIPTION Example

[0031] See also Figure 1-7, an exhaust gas treatment device for monoammonium phosphate production equipment, including a spray chamber 1, the spray chamber 1 is provided with a sewage outlet and an exhaust gas outlet, and also includes an air intake guide multi-bend pipe 2, the bottom end of the spray chamber 1 is provided with a plurality of annular support legs 27, the spray chamber 1 is provided with a liquid replenishment port and a liquid level observation port, a disc frame 3 is provided in the spray chamber 1, the top of the disc frame 3 is fixedly connected to a mounting drive shaft 4, a bearing hole is opened at the top of the spray chamber 1, the mounting drive shaft 4 is installed in the bearing hole through a thrust bearing, and a servo motor for rotating the mounting drive shaft 4 is installed at the top of the spray chamber 1, through the disc The cooperation of the frame 3, the mounting drive shaft 4 and the servo motor forms a structure for installing and driving multiple outer swing aeration tubes 7 and multiple inner swing aeration tubes 8, so that the multiple outer swing aeration tubes 7 and multiple inner swing aeration tubes 8 can be reciprocated in the spray chamber 1, so that the aeration points form a dynamic aeration effect, and the recovery effect of monoammonium phosphate is better. The disc frame 3 is provided with multiple outer ring openings 5 ​​and multiple inner ring openings 6. The multiple outer ring openings 5 ​​are all rotatably connected to the outer swing aeration tubes 7, and the multiple inner ring openings 6 are all rotatably connected to the inner swing aeration tubes 8. Through the multiple outer swing aeration tubes 7 and multiple inner swing aeration tubes The arrangement of the air pipe 8 forms a multi-point guidance and discharge of the tail gas, realizes the discharge of the tail gas from below the liquid level of the detergent, forms a detergent amount that is higher than the dissolution demand of the monoammonium phosphate dust in the tail gas, and has a better treatment effect. The multiple inner ring openings 6 and the multiple outer ring openings 5 ​​are arranged in an alternating ring shape at intervals, so as to realize the staggered separation between the multiple inner swinging aeration pipes 8 and the multiple outer swinging aeration pipes 7, and can form a relatively ample space for the swing of the multiple inner swinging aeration pipes 8 and the multiple outer swinging aeration pipes 7, thereby reducing the risk of mutual interference during the swinging process. The multiple inner swinging aeration pipes 8 are fixedly connected There are two inner connecting shafts 23, two inner rotating grooves are provided in each of the multiple inner ring openings 6, and the multiple inner connecting shafts 23 are rotatably connected in the multiple inner rotating grooves. Two outer connecting shafts 24 are fixedly connected to the multiple outer swinging aeration pipes 7, two outer rotating grooves are provided in each of the multiple outer ring openings 5, and the multiple outer connecting shafts 24 are rotatably connected in the multiple outer rotating grooves, thereby realizing the specific connection mode of the inner swinging aeration pipe 8 in the inner ring opening 6 and the specific connection mode of the outer swinging aeration pipe 7 in the outer ring opening 5, thereby ensuring that both the inner swinging aeration pipe 8 and the outer swinging aeration pipe 7 have the basic conditions for swinging.

[0032] It should be further explained that the multiple outer swing aeration pipes 7 and the multiple inner swing aeration pipes 8 are all connected to the air intake guide multi-bend pipe 2, and an outer ventilation pipe ring 13 and an inner ventilation pipe ring 14 are provided in the spray chamber 1. The outer ventilation pipe ring 13 is connected with a plurality of outer flexible pipes 15, and the multiple outer flexible pipes 15 are respectively connected to the multiple outer swing aeration pipes 7. The inner ventilation pipe ring 14 is connected with a plurality of inner flexible pipes 16, and the multiple inner flexible pipes 16 are respectively connected to the multiple inner swing aeration pipes 8. The inner ventilation pipe ring 14 and the outer ventilation pipe ring 13 are both connected to the air intake guide multi-bend pipe 2, forming a connection between the air intake guide multi-bend pipe 2 connecting tube and the multiple inner swing aeration pipes 8 and the multiple outer swing aeration pipes 7. The air intake guide multi-bend pipe 2 is connected with a long diversion hard pipe 17 and a short diversion hard pipe 18. The long diversion hard pipe 17 is communicated with the inner ventilation pipe ring 14, and the short diversion hard pipe 18 is communicated with the outer ventilation pipe ring 13, so that the air intake guide multi-bend pipe 2 is connected to the inner ventilation pipe ring 14 and the outer ventilation pipe ring 13 respectively. An insertion hole is provided on the spray chamber 1, and the air intake guide multi-bend pipe 2 is fixedly connected in the insertion hole, and a sealing connection is adopted between the outer side wall of the air intake guide multi-bend pipe 2 and the inner side wall of the insertion hole to realize the relative connection and positioning between the air intake guide multi-bend pipe 2 and the spray chamber 1, thereby realizing to a certain extent that the outer ventilation pipe ring 13 and the inner ventilation pipe ring 14 are stably positioned in the spray chamber 1, and an inner bending guide ring 9 and an outer bending guide ring 10 are fixedly connected to the inner bottom wall of the spray chamber 1. Through the arrangement of the inner bending guide ring 9 and the outer bending guide ring 10, it is convenient to accompany multiple outer swing The reciprocating rotation and swing of the dynamic aeration tube 7 and the multiple inner swinging aeration tubes 8 realizes the adjustment of the relative distance between the top ends of the multiple outer swinging aeration tubes 7 and the multiple inner swinging aeration tubes 8, and realizes the regulation of the relative distance between the adjacent multiple aeration points. It is more flexible to use and further improves the reliability of use. A plurality of inner connecting rings 11 are provided on the inner bending guide ring 9, and the multiple inner connecting rings 11 are respectively connected to the bottom ends of the multiple inner swinging aeration tubes 8. A plurality of outer connecting rings 12 are provided on the outer bending guide ring 10, and the multiple outer connecting rings 12 are respectively connected to the bottom ends of the multiple outer swinging aeration tubes 7. The top ends of the multiple inner connecting rings 11 are fixedly connected with the inner guide connecting rods 19, and the multiple inner guide connecting rods 19 are respectively slidably matched with the multiple inner swinging aeration tubes 8 and cooperate with each other. An inner spring 20 is connected between the inner guide connecting rod 19 and the inner swing aeration tube 8, and the top ends of the multiple outer connecting rings 12 are fixedly connected to the outer guide connecting rods 21, and the multiple outer guide connecting rods 21 are respectively slidably matched with the multiple outer swing aeration tubes 7, and an outer spring 22 is connected between the outer guide connecting rods 21 and the outer swing aeration tube 7 that cooperate with each other, so as to realize the movable connection between the inner connecting ring 11 and the inner swing aeration tube 8, and the movable connection between the outer connecting ring 12 and the outer swing aeration tube 7. The outer bending guide ring 10 and the inner bending guide ring 9 are fixedly connected to a plurality of support rods 25, and the plurality of support rods 25 are fixedly connected to the inner bottom wall of the spray chamber 1. The outer bending guide ring 10 and the inner bending guide ring 9 include a plurality of outer arc driving segments and a plurality of inner arc driving segments.A driving structure for the inner connecting ring 11 and the outer connecting ring 12 is formed. Two bell mouths 26 are provided on the inner connecting ring 11 and the outer connecting ring 12 to facilitate the smooth passage of the inner bending guide ring 9 and the outer bending guide ring 10.

[0033] The servo motor in this embodiment is a conventional device purchased on the market and known to those skilled in the art. It can also be customized according to actual needs. In this patent, we only use it and do not improve its structure and function. For those skilled in the art, its setting method, installation method and electrical connection method only need to be debugged according to the requirements of its instruction manual, and will not be described in detail here.

[0034] In summary, the working process of the tail gas treatment device of the monoammonium phosphate production equipment is as follows: when in use, first install the tail gas treatment device of the monoammonium phosphate production equipment at the desired location, connect the servo motor to the corresponding control circuit according to the instructions, and write the control program to the PLC control unit of the servo motor. Then, connect the air intake guide multi-bend pipe 2 with the external venturi scrubber, and connect the tail gas outlet with the external chimney. During operation, the tail gas treated by the venturi scrubber passes through the air intake guide multi-bend pipe 2. The elbow 2 enters the long branch hard pipe 17 and the short branch hard pipe 18. The tail gas entering the long branch hard pipe 17 is guided by the inner ventilation pipe ring 14 and the inner flexible pipe 16 in sequence to enter the inner swing aeration pipe 8. The tail gas entering the short branch hard pipe 18 is guided by the outer ventilation pipe ring 13 and the outer flexible pipe 15 in sequence to enter the outer swing aeration pipe 7. The tail gas discharged through the inner swing aeration pipe 8 and the outer swing aeration pipe 7 enters the detergent in the spray chamber 1 to achieve the purpose of tail gas washing. At the same time, during the tail gas treatment process, it can also be started by The servo motor is driven to drive the multiple inner swing aeration tubes 8 and the outer swing aeration tubes 7 to move back and forth. During this process, the moving multiple inner swing aeration tubes 8 and the multiple outer swing aeration tubes 7 can not only realize the dynamic conversion of the aeration points, but also form a stirring effect relative to the detergent, so as to achieve the purpose of better dissolving the monoammonium phosphate in the exhaust gas by the detergent. At the same time, during the position movement of the inner swing aeration tubes 8 and the outer swing aeration tubes 7, the auxiliary pushing effect of the inner bending guide ring 9 and the outer bending guide ring 10 provided in the spray chamber 1 can realize the synchronous inward and outward swing of the multiple inner swing aeration tubes 8, and the synchronous inward and outward swing of the multiple outer swing aeration tubes 7, thereby realizing the synchronous inward or outward tilting of the multiple inner swing aeration tubes 8 and the synchronous rotation of the multiple inner swing aeration tubes 8 and the multiple outer swing aeration tubes 7, thereby adjusting the spacing between the multiple aeration points, which is more flexible to use and further improves the reliability of exhaust gas treatment.

Claims

1. A tail gas treatment device for monoammonium phosphate production equipment, comprising a spray chamber (1), wherein the spray chamber (1) is provided with a sewage outlet and a tail gas outlet, characterized in that: The spray chamber (1) further comprises an air intake guide multi-bend pipe (2), a liquid replenishing port and a liquid level observation port are provided on the spray chamber (1), a disc frame (3) is provided in the spray chamber (1), the top end of the disc frame (3) is fixedly connected to a mounting drive shaft (4), a bearing hole is provided at the top end of the spray chamber (1), the mounting drive shaft (4) is installed in the bearing hole through a thrust bearing, a servo motor for rotating the mounting drive shaft (4) is installed at the top end of the spray chamber (1), a plurality of outer ring openings (5) and a plurality of An inner ring opening (6), multiple outer ring openings (5) are rotatably connected to outer swing aeration pipes (7), multiple inner ring openings (6) are rotatably connected to inner swing aeration pipes (8), multiple outer swing aeration pipes (7) and multiple inner swing aeration pipes (8) are connected to the air inlet guide multi-bend pipe (2), an inner bending guide ring (9) and an outer bending guide ring (10) are fixedly connected to the inner bottom wall of the spray chamber (1), multiple inner connecting rings (11) are provided on the inner bending guide ring (9), and multiple inner connecting rings (11) are provided on the inner bending guide ring (9). The inner connecting ring (11) is respectively connected to the bottom ends of the plurality of inner swing aeration tubes (8), the outer bending guide ring (10) is provided with a plurality of outer connecting rings (12), the plurality of outer connecting rings (12) are respectively connected to the bottom ends of the plurality of outer swing aeration tubes (7), the top ends of the plurality of inner connecting rings (11) are fixedly connected to the inner guide connecting rods (19), the plurality of inner guide connecting rods (19) are respectively slidably matched with the plurality of inner swing aeration tubes (8), and the inner guide connecting rods (19) that match each other are respectively slidably matched with the plurality of inner swing aeration tubes (8). An inner spring (20) is connected between the outer connecting ring (10) and the inner swing aeration tube (8), and the top ends of the plurality of outer connecting rings (12) are fixedly connected to an outer guide connecting rod (21), and the plurality of outer guide connecting rods (21) are respectively slidably matched with the plurality of outer swing aeration tubes (7), and an outer spring (22) is connected between the outer guide connecting rods (21) and the outer swing aeration tubes (7) that cooperate with each other, and the outer bending guide ring (10) and the inner bending guide ring (9) both include a plurality of outer arc driving segments and a plurality of inner arc driving segments.

2. The tail gas treatment device for monoammonium phosphate production equipment according to claim 1, characterized in that: An outer snorkel ring (13) and an inner snorkel ring (14) are provided in the spray chamber (1); the outer snorkel ring (13) is connected to a plurality of outer flexible tubes (15); the plurality of outer flexible tubes (15) are respectively connected to a plurality of outer swing aeration tubes (7); the inner snorkel ring (14) is connected to a plurality of inner flexible tubes (16); the plurality of inner flexible tubes (16) are respectively connected to a plurality of inner swing aeration tubes (8); and both the inner snorkel ring (14) and the outer snorkel ring (13) are connected to the air intake guide multi-bend tube (2).

3. The tail gas treatment device for monoammonium phosphate production equipment according to claim 2, characterized in that: The air intake guide multi-bend pipe (2) is connected to a long diversion hard pipe (17) and a short diversion hard pipe (18), the long diversion hard pipe (17) is connected to the inner vent pipe ring (14), and the short diversion hard pipe (18) is connected to the outer vent pipe ring (13).

4. The tail gas treatment device for monoammonium phosphate production equipment according to claim 3, characterized in that: An insertion hole is provided on the spray chamber (1), the air intake guide multi-bend pipe (2) is fixedly connected in the insertion hole, and a sealing connection is adopted between the outer wall of the air intake guide multi-bend pipe (2) and the inner wall of the insertion hole.

5. The tail gas treatment device for monoammonium phosphate production equipment according to claim 4, characterized in that: The plurality of inner swing aeration tubes (8) are fixedly connected to two inner connecting shafts (23), the plurality of inner ring openings (6) are provided with two inner rotating grooves, the plurality of inner connecting shafts (23) are respectively rotatably connected in the plurality of inner rotating grooves, the plurality of outer swing aeration tubes (7) are fixedly connected to two outer connecting shafts (24), the plurality of outer ring openings (5) are provided with two outer rotating grooves, the plurality of outer connecting shafts (24) are respectively rotatably connected in the plurality of outer rotating grooves.

6. The tail gas treatment device for monoammonium phosphate production equipment according to claim 5, characterized in that: The plurality of inner ring openings (6) and the plurality of outer ring openings (5) are arranged in an annular pattern with intervals and alternations.

7. The tail gas treatment device for monoammonium phosphate production equipment according to claim 6, characterized in that: The outer bending guide ring (10) and the inner bending guide ring (9) are both fixedly connected to a plurality of support rods (25), and the plurality of support rods (25) are all fixedly connected to the inner bottom wall of the spray chamber (1).

8. The tail gas treatment device for monoammonium phosphate production equipment according to claim 7, characterized in that: Two bell mouths (26) are provided on each of the inner connecting ring (11) and the outer connecting ring (12).

9. The tail gas treatment device for monoammonium phosphate production equipment according to claim 8, characterized in that: A plurality of annular support legs (27) are provided at the bottom end of the spray chamber (1).

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