Multi-stage spraying treatment device for waste gas of printing and dyeing setting machine

Abstract

The invention relates to the technical field of waste gas multi-stage spraying treatment, and discloses a printing and dyeing setting machine waste gas multi-stage spraying treatment device which comprises a spraying tower, the outer wall of the spraying tower is fixedly connected with three conveying pipes, one end of each conveying pipe is fixedly connected with a flow dividing pipe, the interior of each flow dividing pipe is fixedly connected with an atomization spray head, and the atomization spray heads are fixedly connected with the spraying tower. A gas inlet pipe is fixedly connected to the bottom of the spray tower, cooling fins are fixedly connected to the middle of the inner wall of the spray tower, and a filtering assembly is arranged on the inner wall of the spray tower and used for filtering impurities in waste gas. According to the waste gas treatment device, the problems that a spraying treatment device is insufficient in gas-liquid contact time, waste gas distribution is uneven, sufficient combination and cooling are difficult, and the treatment effect is poor are solved, waste gas is evenly distributed, atomized water can make sufficient contact, pollutants are more efficiently adsorbed, dissolved or chemically reacted, and the removal effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas multi-stage spraying treatment, and in particular to a waste gas multi-stage spraying treatment device for a printing and dyeing setting machine. Background Art

[0002] The printing and dyeing setting machine will produce high-temperature oily smoke exhaust gas during the textile production process. These exhaust gases contain a large amount of particulate matter, oil mist, volatile organic compounds (VOCs), acidic or alkaline gases and other pollutants, which not only cause serious pollution to the atmospheric environment, but also harm human health. Therefore, it must be effectively treated. The multi-stage spray treatment device for printing and dyeing setting machine exhaust gas is used because it can gradually purify the exhaust gas through a multi-stage spray system: the first layer is used to cool and remove particulate matter, the second layer is for chemical absorption of acidic or alkaline gases, and the third layer is further removed. Oil mist and VOCs, and finally combined with tail gas deep purification technology to ensure that the exhaust gas meets the emission standards. This multi-stage treatment method is efficient and environmentally friendly, and can cope with complex exhaust gas components while reducing the emission concentration of pollutants.

[0003] The traditional multi-stage spray treatment device for waste gas from printing and dyeing setting machines treats waste gas by spraying and purifying it layer by layer. The operation process is simple but the efficiency is high. The waste gas first enters the device from the bottom of the tower and passes through the spray area layer by layer. The first layer is sprayed with clean water or coolant; the second layer uses alkali or acid to chemically absorb acidic or alkaline gases; the third layer is sprayed with special adsorption liquid or clean water to remove oil mist and VOCs to further purify the waste gas. Finally, the purified waste gas is discharged from the top. The spray liquid can be recycled during the treatment process, and the waste liquid is collected and centrally treated to ensure that the waste gas meets the emission standards.

[0004] In traditional multi-stage spray treatment devices for waste gas from printing and dyeing setting machines, the waste gas flow rate is usually high, and the droplets of the spray liquid are affected by gravity and easily settle or are carried by the airflow, resulting in insufficient gas-liquid contact time, uneven distribution of the waste gas, and difficulty in fully combining and cooling, resulting in poor treatment effect. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine, which aims to improve the traditional multi-stage spray treatment device, where the gas-liquid contact time is insufficient, resulting in uneven distribution of waste gas, difficulty in fully combining and cooling, and poor treatment effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-stage spray treatment device for waste gas of a printing and dyeing setting machine, comprising a spray tower, the outer wall of the spray tower is fixedly connected with three delivery pipes, one end of each of the three delivery pipes is fixedly connected with a shunt pipe, the inside of the shunt pipe is fixedly connected with an atomizing nozzle, the bottom of the spray tower is fixedly connected with an air inlet pipe, the middle of the inner wall of the spray tower is fixedly connected with a cooling fin, the inner wall of the spray tower is provided with a filter assembly, the filter assembly is used to filter impurities in the waste gas, and the top of the spray tower is provided with a discharge assembly, the discharge assembly is used to discharge the treated waste gas;

[0007] The filter assembly includes a ball ring packing plate, the outer wall of which is fixedly connected to the inner wall of the spray tower, and an activated carbon filter plate is arranged above the ball ring packing plate, the outer wall of which is fixedly connected to the inner wall of the spray tower.

[0008] Furthermore, the discharge assembly includes a demister top plate, the lower surface of the demister top plate is fixedly connected to the top of the spray tower, the top of the demister top plate is fixedly connected to a discharge pipe, and one end of the discharge pipe is fixedly connected to a blower.

[0009] Furthermore, a waste liquid bin is slidably connected to the bottom of the spray tower, a hinge is fixedly connected to one side of the outer wall of the spray tower, an annular protective plate is fixedly connected to the outer wall of the hinge, a fixed block one is fixedly connected to one end of the annular protective plate, a fixed block two is fixedly connected to the other side of the outer wall of the spray tower, the fixed block one is internally rotatably connected to a rotating shaft, a clamping block is fixedly connected to one end of the rotating shaft, a limiting ring is fixedly connected to the outer wall of the rotating shaft, a torsion assembly is provided on the outer wall of the rotating shaft, and the torsion assembly is used to drive the clamping block to be clamped in the interior of the fixed block two.

[0010] Furthermore, the torsion assembly includes a fixing ring, an outer wall of the fixing ring is fixedly connected to the outer wall of the rotating shaft, the outer wall of the rotating shaft is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the outer wall of the fixing ring, and the other end of the torsion spring is fixedly connected to the inside of the fixing block.

[0011] Furthermore, the waste liquid bin is arranged below the air inlet pipe, and the waste liquid bin is used for carrying waste liquid.

[0012] Furthermore, the annular protective plate is arranged on one side of the outer wall of the activated carbon filter plate, and the annular protective plate is used to limit the activated carbon filter plate.

[0013] Furthermore, the outer wall of the clamping block is arranged inside the second fixing block, and the clamping block is used to fix the first fixing block and the second fixing block.

[0014] Furthermore, the outer wall of the limiting ring is rotatably connected to the interior of the fixing block 1, and the limiting ring is used to limit the rotation of the rotating shaft.

[0015] The present invention has the following beneficial effects:

[0016] 1. In the present invention, the exhaust gas is first delivered to the interior of the spray tower through the air inlet pipe, and then the clean, alkaline solution and the oil absorbent are respectively delivered through three delivery pipes to cooperate with the atomizing nozzle and the diverter pipe to be evenly sprayed on the interior of the spray tower. At this time, the air is dispersed by the ball ring packing plate and evenly distributed in the interior of the spray tower, combined with the atomized water, and thus filtered by the activated carbon filter plate. Finally, the air is further cooled by the cooling fins, which solves the problem that the spray treatment device has insufficient gas-liquid contact time, resulting in uneven distribution of the exhaust gas, difficulty in full combination and cooling, and poor treatment effect, and achieves uniform distribution of the exhaust gas and full contact with the atomized water, so that the pollutants are more efficiently adsorbed, dissolved or chemically reacted, thereby improving the removal effect.

[0017] 2. In the present invention, firstly, waste liquid is collected in a waste liquid bin for treatment, then the rotating shaft is driven to drive the card block to rotate inside the fixed block 2, and then the rotating shaft, the fixed ring, the torsion spring and the limit ring are coordinated to realize the disassembly and assembly of the annular protective plate, thereby facilitating the cleaning or replacement of the activated carbon filter plate. The detachable and cleanable design enables the filter plate to always remain clean, which helps to maintain a stable airflow and efficient dust capture capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of a spray tower of a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the upper structure of the ball ring packing plate of a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a waste liquid bin of a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine proposed by the present invention;

[0022] Figure 5 This is a schematic structural diagram of one side of an annular protective plate of a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of a fixed block of a multi-stage spray treatment device for waste gas from a printing and dyeing setting machine proposed by the present invention.

[0024] Legend:

[0025] 1. Spray tower; 2. Delivery pipe; 3. Diverter pipe; 4. Atomizing nozzle; 5. Inlet pipe; 6. Ball ring packing plate; 7. Activated carbon filter plate; 8. Cooling fins; 9. Demisting top plate; 10. Discharge pipe; 11. Blower; 12. Waste liquid tank; 13. Annular protective plate; 14. Hinge; 15. Fixed block 1; 16. Fixed block 2; 17. Rotating shaft; 18. Fixed ring; 19. Torsion spring; 20. Block; 21. Limiting ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Reference Figure 1 one Figure 3 , an embodiment provided by the present invention: a multi-stage spray treatment device for waste gas of a printing and dyeing setting machine, comprising a spray tower 1, the outer wall of the spray tower 1 is fixedly connected with three delivery pipes 2, one end of each of the three delivery pipes 2 is fixedly connected with a shunt pipe 3, the inside of the shunt pipe 3 is fixedly connected with an atomizing nozzle 4, firstly, the delivery pipe 2 is respectively connected with a cleaning, alkaline solution and an oil remover, and transported to the inside of the shunt pipe 3, and then atomized by the atomizing nozzle 4 inside the shunt pipe 3 and transported to the inside of the spray tower 1, the bottom of the spray tower 1 is fixedly connected with an air intake pipe 5, and the air intake pipe 5 is connected with the waste gas pipeline, so that the waste gas is transported to the inside of the spray tower 1, the middle part of the inner wall of the spray tower 1 is fixedly connected with a cooling fin 8, and the waste gas can be further cooled by the cooling fin 8 to create conditions for subsequent absorption reaction, the inner wall of the spray tower 1 is provided with a filter assembly, and the filter assembly is used to filter impurities in the waste gas, and the top of the spray tower 1 is provided with a discharge assembly, and the discharge assembly is used to discharge the treated waste gas;

[0028] The filter assembly includes a ball ring packing plate 6, the outer wall of which is fixedly connected to the inner wall of the spray tower 1, an activated carbon filter plate 7 is arranged above the ball ring packing plate 6, the outer wall of which is fixedly connected to the inner wall of the spray tower 1, the transported exhaust gas is guided by the ball ring packing plate 6, so that the exhaust gas is evenly distributed inside the spray tower 1, and then the dust mass is increased through the water atomization structure with clean water, so that the dust is better adsorbed and filtered by the activated carbon filter plate 7, and the discharge assembly includes a demister top plate 9, the lower surface of which is fixedly connected to the top of the spray tower 1, the top of the demister top plate 9 is fixedly connected to a discharge pipe 10, one end of the discharge pipe 10 is fixedly connected to a blower 11, the treated exhaust gas is demistered by the demister top plate 9, and transported to the inside of the discharge pipe 10, and this filtering process is driven by the blower 11 to accelerate the process rate;

[0029] Reference Figure 4 one Figure 6The bottom of the spray tower 1 is slidably connected with a waste liquid bin 12. After long-term use, the filtered waste combines with the atomized water to form waste water, and flows along the inner wall of the spray tower 1 to the inside of the waste liquid bin 12 for centralized collection. A hinge 14 is fixedly connected to one side of the outer wall of the spray tower 1. An annular protective plate 13 is fixedly connected to the outer wall of the hinge 14. A fixed block 15 is fixedly connected to one end of the annular protective plate 13. A fixed block 16 is fixedly connected to the other side of the outer wall of the spray tower 1. A rotating shaft 17 is rotatably connected to the interior of the fixed block 15. One end of the rotating shaft 17 is fixedly connected to the outer wall of the spray tower 1. The end is fixedly connected with a block 20, and the outer wall of the rotating shaft 17 is fixedly connected with a limit ring 21. The driving rotating shaft 17 drives the block 20 to rotate inside the fixed block 16. Due to the limitation of the limit ring 21, the rotating shaft 17 can only rotate 90 degrees. When the block 20 rotates 90 degrees, it can be driven from the inside of the fixed block 16, and then the annular protective plate 13 can be pulled open to replace or clean the internal activated carbon filter plate 7. The outer wall of the rotating shaft 17 is provided with a torsion component, which is used to drive the block 20 to be stuck in the fixed block 16 The interior and torsion assembly include a fixing ring 18, the outer wall of the fixing ring 18 is fixedly connected to the outer wall of the rotating shaft 17, the outer wall of the rotating shaft 17 is sleeved with a torsion spring 19, one end of the torsion spring 19 is fixedly connected to the outer wall of the fixing ring 18, and the other end of the torsion spring 19 is fixedly connected to the interior of the fixed block 15. When the rotating shaft 17 is driven to rotate, the torsion spring 19 is driven to torsion through the fixing ring 18. When installing, it is only necessary to insert the clamping block 20 into the interior of the fixed block 2 16. At this time, the torsion spring 19 rotates to drive the clamping block 20 to be clamped in the fixed block The interior of the second fixed block 16 can also prevent the rotating shaft 17 from rotating at will, the waste liquid bin 12 is arranged below the air inlet pipe 5, the waste liquid bin 12 is used to carry the waste liquid, the annular protective plate 13 is arranged on one side of the outer wall of the activated carbon filter plate 7, the annular protective plate 13 is used to limit the activated carbon filter plate 7, the outer wall of the block 20 is arranged inside the fixed block 16, the block 20 is used to fix the fixed block 15 and the fixed block 2 16, the outer wall of the limiting ring 21 is rotatably connected to the inside of the fixed block 15, and the limiting ring 21 is used to limit the rotation of the rotating shaft 17.

[0030] Working principle: When the multi-stage spray treatment device for waste gas from the printing and dyeing setting machine is needed, the air is first transported to the inside of the spray tower 1 through the air inlet pipe 5, and then the three delivery pipes 2 inside the spray tower 1 are connected in sequence from bottom to top, clean water-alkaline solution such as dilute NaOH solution-oil absorbent. Then, the air is transported to the inside of the three shunt pipes 3 inside the spray tower 1 respectively and finally discharged into the inside of the spray tower 1 through the atomizing nozzle 4. At this time, after the air enters the inside of the spray tower 1, it is first shunted through the ball ring packing plate 6 to make the air evenly distributed inside the spray tower 1. Then, it first contacts with the clean water atomized water. At this time, the dust in the air is combined with the atomized water to increase its volume, so that it is more efficiently adsorbed and filtered by the activated carbon filter plate 7. Then, the filtered air is cooled by the cooling fins 8 to prevent the waste gas from overheating. Then, it is combined with the alkaline solution to remove the acidic or alkaline components in the waste gas. Finally, the air is combined with the oil absorbent to adsorb or separate the oil mist and volatile organic compounds in the waste gas. The air that has been treated in multiple layers is finally defogged by the demisting top plate 9 and then discharged through the discharge pipe 10.

[0031] In addition, after long-term use, part of the atomized water combined with the exhaust gas will form waste water, which will be retained inside the waste liquid bin 12 for centralized treatment. Then the driving shaft 17 drives the block 20 to rotate inside the fixed block 16, and at the same time drives the torsion spring 19 to twist through the fixed ring 18, and drives the limit ring 21 to slide inside the fixed block 15. Due to the design of the internal slide groove of the fixed block 15, the limit ring 21 can only rotate 90 degrees. At this time, the rotated block 20 can be pulled out of the fixed block 16, and then the annular protective plate 13 can be pulled open, so that the activated carbon filter plate 7 can be taken out for cleaning or replacement. During installation, you only need to put the activated carbon filter plate 7 and the annular protective plate 13 back to their original positions, and then the rebound of the torsion spring 19 drives the block 20 to be re-stuck in the fixed block 16 to realize the disassembly and assembly of the activated carbon filter plate 7.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage spray treatment device for waste gas from a printing and dyeing setting machine, comprising a spray tower (1), characterized in that: The outer wall of the spray tower (1) is fixedly connected with three delivery pipes (2), one end of each of the three delivery pipes (2) is fixedly connected with a shunt pipe (3), the inside of the shunt pipe (3) is fixedly connected with an atomizing nozzle (4), the bottom of the spray tower (1) is fixedly connected with an air inlet pipe (5), the middle of the inner wall of the spray tower (1) is fixedly connected with a cooling fin (8), the inner wall of the spray tower (1) is provided with a filter assembly, the filter assembly is used to filter impurities in the exhaust gas, and the top of the spray tower (1) is provided with a discharge assembly, the discharge assembly is used to discharge the treated exhaust gas; The filter assembly comprises a ball ring packing plate (6), the outer wall of which is fixedly connected to the inner wall of the spray tower (1); an activated carbon filter plate (7) is arranged above the ball ring packing plate (6), and the outer wall of which is fixedly connected to the inner wall of the spray tower (1).

2. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 1 is characterized in that: The discharge assembly comprises a demister top plate (9), the lower surface of the demister top plate (9) is fixedly connected to the top of the spray tower (1), the top of the demister top plate (9) is fixedly connected to a discharge pipe (10), and one end of the discharge pipe (10) is fixedly connected to a blower (11).

3. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 1 is characterized in that: The bottom of the spray tower (1) is slidably connected to a waste liquid bin (12); one side of the outer wall of the spray tower (1) is fixedly connected to a hinge (14); the outer wall of the hinge (14) is fixedly connected to an annular protective plate (13); one end of the annular protective plate (13) is fixedly connected to a fixed block 1 (15); the other side of the outer wall of the spray tower (1) is fixedly connected to a fixed block 2 (16); the interior of the fixed block 1 (15) is rotatably connected to a rotating shaft (17); one end of the rotating shaft (17) is fixedly connected to a clamping block (20); the outer wall of the rotating shaft (17) is fixedly connected to a limiting ring (21); the outer wall of the rotating shaft (17) is provided with a torsion assembly, and the torsion assembly is used to drive the clamping block (20) to be clamped inside the fixed block 2 (16).

4. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 3 is characterized in that: The torsion assembly comprises a fixing ring (18), the outer wall of the fixing ring (18) being fixedly connected to the outer wall of the rotating shaft (17), the outer wall of the rotating shaft (17) being sleeved with a torsion spring (19), one end of the torsion spring (19) being fixedly connected to the outer wall of the fixing ring (18), and the other end of the torsion spring (19) being fixedly connected to the interior of the fixing block (15).

5. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 3 is characterized by: The waste liquid bin (12) is arranged below the air inlet pipe (5), and the waste liquid bin (12) is used for carrying waste liquid.

6. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 3 is characterized by: The annular protective plate (13) is arranged on one side of the outer wall of the activated carbon filter plate (7), and the annular protective plate (13) is used to limit the position of the activated carbon filter plate (7).

7. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 3 is characterized by: The outer wall of the clamping block (20) is arranged inside the second fixing block (16), and the clamping block (20) is used to fix the first fixing block (15) and the second fixing block (16).

8. The multi-stage spray treatment device for waste gas from a printing and dyeing setting machine according to claim 3 is characterized by: The outer wall of the limiting ring (21) is rotatably connected to the interior of the fixing block 1 (15), and the limiting ring (21) is used to limit the rotation of the rotating shaft (17).

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