Waste gas multi-section condensation treatment equipment for printing and dyeing setting machine and condensation treatment method

Abstract

The invention relates to the technical field of waste gas condensation treatment, and discloses waste gas multi-section condensation treatment equipment for a printing and dyeing setting machine and a condensation treatment method.The waste gas multi-section condensation treatment equipment comprises printing and dyeing setting equipment, a waste gas collecting device and a condensation treatment device, and the waste gas collecting device and the condensation treatment device are both arranged above the printing and dyeing setting equipment; a primary screening assembly used for conducting primary treatment on waste gas is arranged between the waste gas collecting device and the condensation treatment device, an impurity collecting assembly used for collecting waste gas impurities is arranged at the bottom of the primary screening assembly, and through the arrangement of the primary screening assembly, dust and printing and dyeing impurities in the waste gas can be effectively separated out; most large-particle pollutants are removed, the load of follow-up condensation treatment is reduced, stable operation of equipment is guaranteed, meanwhile, waste gas entering the condensation device after pretreatment is purer and does not contain large-particle impurities, heat transfer and material phase change processes are facilitated, and the condensation effect is better.

Description

Technical Field

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

[0002] The multi-stage condensation treatment equipment for waste gas from printing and dyeing setting machines is an environmentally friendly equipment specially used to treat waste gas generated by printing and dyeing setting machines. During operation, the printing and dyeing setting machines will emit a large amount of waste gas with complex components such as organic pollutants, oil smoke, fiber particles and water vapor. The multi-stage condensation treatment equipment effectively treats the waste gas by utilizing the phase change characteristics of different components in the waste gas at different temperatures.

[0003] Traditional equipment usually only uses a simple air intake pipe to directly introduce the exhaust gas into the condensing device, which makes it difficult to effectively separate the dust and printing and dyeing impurities in the exhaust gas at the air intake stage. A large amount of particulate matter will directly enter the condensing equipment with the exhaust gas. Since the dust and impurities cannot be fully removed, these particles will gradually accumulate on the inner wall of the condenser tube, the surface of the heat exchanger and other parts during the condensation process. As the operating time increases, the accumulation becomes more and more, which will block the condenser tube channel and reduce the heat exchange area. Taking the condenser tube as an example, the airflow in the blocked condenser tube is not smooth, and the heat exchange between the exhaust gas and the refrigerant is hindered. A lower refrigerant temperature or a longer condensation time is required to achieve the same treatment effect. This not only increases energy consumption, but also reduces the processing capacity of the equipment, thereby affecting the overall condensation separation efficiency. In addition, after the impurities are separated, due to the lack of effective fixation and collection measures, the separated impurities are easy to remain inside the equipment or be mixed into the exhaust gas again under airflow disturbance, causing secondary pollution.

[0004] Traditional exhaust gas condensation treatment equipment for printing and dyeing setting machines usually lacks active inner wall cleaning devices. The oily substances in the dye exhaust gas will adhere to the inner wall after condensation, and gradually form a thick layer of dirt. If not cleaned in time, the dirt will accumulate more and more, seriously affecting the heat exchange efficiency of the equipment. Most of them are only manually cleaned during regular equipment maintenance. This cleaning method cannot deal with the liquid adhesion and drying problems generated during operation in time, and faces many problems when restarting after shutdown, such as spending a lot of time and manpower to clean the dirt on the inner wall, checking equipment failures caused by drying and adhesion, etc. At the same time, some dye components or additives will adhere to the inner wall after condensation, and the dried and sticky dirt will chemically react with the metal inner wall, or cause physical damage to the inner wall during thermal expansion and contraction.

[0005] Therefore, it is necessary to provide a multi-stage condensation treatment device and a condensation treatment method for waste gas from a printing and dyeing setting machine, aiming to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a multi-stage condensation treatment device and a condensation treatment method for waste gas from a printing and dyeing setting machine.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-stage condensation treatment device and a condensation treatment method for waste gas for a printing and dyeing setting machine, comprising a printing and dyeing setting device, a waste gas collecting device and a condensation treatment device, wherein the waste gas collecting device and the condensation treatment device are both arranged above the printing and dyeing setting device, and a preliminary screening component for preliminary treatment of the waste gas is arranged between the waste gas collecting device and the condensation treatment device, an impurity collection component for collecting waste gas impurities is arranged at the bottom of the preliminary screening component, and an anti-sticking component for preventing sticking during the condensation process is arranged inside the condensation treatment device.

[0008] Preferably, the preliminary screening assembly includes a sealing shell, which is connected to the top of the exhaust gas collecting device, an eccentric air inlet is provided on the side of the sealing shell close to the exhaust gas collecting device, a funnel-shaped air separation groove is provided at the bottom of the sealing shell, and the top of the sealing shell is fixedly connected to an air outlet block.

[0009] Preferably, the impurity collecting assembly includes a vent pipe, the vent pipe is fixedly connected to the bottom of the sealing shell, a sticky plate is provided inside the vent pipe, and a drain port is provided at the bottom of the vent pipe.

[0010] Preferably, the anti-sticking component includes a positioning plate, which is fixedly connected to the inner wall of the condensation processing device, and the internal rotation of the positioning plate is connected to a positioning gear disk rod and a driving gear rod, and the end of the driving gear rod away from the positioning plate is fixedly connected to a fan-shaped block, and a connecting column is provided on the side of the fan-shaped block away from the positioning plate.

[0011] Preferably, the anti-sticking component also includes a rotating disk, which is rotatably connected to the inside of the positioning gear disk rod, and the outer wall of the rotating disk is provided with four fan-shaped grooves in a ring shape, and the outer wall of the rotating disk is provided with a cross groove, and the side of the rotating disk away from the positioning gear disk rod is fixedly connected to a positioning ring group, and the outer wall of the positioning ring group is symmetrically fixedly connected with an arc scraper, and a driving device is arranged inside the condensation processing device.

[0012] Preferably, one end of the gas outlet block away from the sealing shell is fixedly connected to the condensation processing device.

[0013] Preferably, the positioning gear disc rod is meshed with the driving gear rod, the connecting column is slidably connected to the inside of the cross slide groove, and the positioning gear disc rod is fixedly connected to the output shaft of the driving device.

[0014] A multi-stage condensation treatment method for waste gas from a printing and dyeing setting machine, comprising the following steps: Step 1: Collect the waste gas generated by the printing and dyeing setting equipment through the waste gas collection device; Step 2: The waste gas collected by the waste gas collection device is transported to the inside of the sealed shell through the eccentric air inlet, and after preliminary screening by the sealed shell, it is discharged into the inside of the condensation treatment device through the air outlet block. In this process, the air tightness of the transmission needs to be ensured; Step 3: The preliminarily pretreated exhaust gas is introduced into the first stage condensation equipment, the second stage condensation equipment, and the third stage condensation equipment in sequence, wherein the temperature of the three stages condensation equipment is gradually reduced, thereby condensing different impurities in the exhaust gas; Step 4: If the content of organic pollutants in the exhaust gas still does not meet the emission standards after multiple stages of condensation, further treatment is performed using a device that can absorb organic matter in the exhaust gas to further purify the exhaust gas; Step 5: Open the driving device regularly to clean the condensation treatment device to prevent the dried liquid from accumulating on the inner wall of the condensation treatment device and affecting the normal condensation effect.

[0015] Preferably, in step three, the refrigerant is selected by cold water or ethylene glycol aqueous solution to ensure that its purity and performance meet the requirements, and the concentration of the ethylene glycol aqueous solution is adjusted according to the actual required condensation temperature.

[0016] Preferably, in step 4, the device may be an activated carbon adsorption device, because activated carbon has a rich pore structure and can adsorb organic matter in the exhaust gas.

[0017] The invention provides a multi-stage condensation treatment device and a condensation treatment method for waste gas from a printing and dyeing setting machine. Compared with the prior art, the invention has the following beneficial effects: 1. Through the setting of the preliminary screening component, when the waste gas collection device discharges the waste gas generated by the printing and dyeing finalizing equipment into the condensation treatment device, the dust-containing waste gas will first flow into the interior of the sealed shell along the eccentric air inlet in a vortex shape, and then the vortex-shaped dust-containing waste gas will flow along the funnel-shaped air separation groove. At the same time, the particles in the dust-containing waste gas are thrown to the sealed shell wall and separated from the air flow under the action of centrifugal force, and slide along the sealed shell wall into the vent pipe under the action of gravity. The waste gas with dust and printing and dyeing impurities removed will turn upward after reaching the bottom of the cone of the funnel-shaped air separation groove, and rotate upward along the axis. Due to the high-speed rotation of the airflow, negative pressure is generated in the area of ​​the central axis. After the airflow reaches the bottom of the cone of the funnel-shaped air separation groove, it is sucked by the negative pressure. The waste gas with dust and impurities removed will then move upward along the central axis and finally be discharged into the condensation treatment device from the air outlet block; Among them, compared with the traditional exhaust gas condensation treatment equipment for printing and dyeing setting machines, the dust-containing exhaust gas can be effectively separated from the printing and dyeing impurities in the exhaust gas through the eddy flow of the dust-containing exhaust gas in the sealed shell and the synergistic effect of centrifugal force and gravity, thereby removing most of the large particle pollutants, reducing the load of subsequent condensation treatment, and improving the efficiency and effect of the entire exhaust gas treatment system. The dust and impurities are removed in advance, which can prevent these particulate matter from entering the condensation treatment device and prevent them from accumulating, scaling or clogging the pipeline on the surface of the condensation equipment, thereby extending the service life of the condensation equipment, reducing the maintenance cost and maintenance frequency of the equipment, and ensuring the stable operation of the equipment. At the same time, the exhaust gas entering the condensation device after pretreatment is purer and does not contain large particle impurities, which is conducive to heat transfer and the phase change process of matter, making the condensation effect better, and can more fully condense the organic pollutants in the exhaust gas into liquid, further improving the purification degree of the exhaust gas.

[0018] 2. Through the setting of the impurity collection component, after the sealing shell separates the impurities in the exhaust gas through eddy current, the sticky plate will stick to the impurities discharged from the exhaust gas, and then the sticky plate can actively stick to the impurities separated from the exhaust gas, and some liquid impurities will pass through the sticky plate and be discharged from the drain port, realizing automatic cleaning and collection of impurities, avoiding the residue and accumulation of impurities inside the equipment, preventing impurities from being re-raised inside the equipment or drifting to subsequent processing links, and reducing secondary pollution caused by improper impurity handling.

[0019] 3. Through the setting of the anti-sticking component, the rotating disk can be continuously driven to rotate intermittently through the connecting column and the cross slide during the rotation of the driving gear rod, so that the rotating disk can continuously scrape the liquid adhering to the inner wall of the condensation treatment device through the arc scraper, preventing the liquid from drying and adhering to the inner wall of the condensation treatment device after the equipment stops running, and continuously scraping the inner wall of the condensation treatment device during the operation of the equipment, ensuring that even when treating waste gas containing sticky or easy-to-dry substances (such as some organic condensate, dirt formed by the mixture of residual impurities and condensed water, etc.), the arc scraper can scrape it off in time to prevent the formation of a dirt layer; Compared with the traditional waste gas condensation treatment equipment for printing and dyeing setting machines, it effectively avoids the stickiness problem caused by the drying of the liquid during the equipment shutdown period, so that the heat exchange efficiency of the condensation treatment device is always maintained at a relatively stable level, and the heat exchange performance will not decrease due to the gradual accumulation of dirt on the inner wall, which helps the entire printing and dyeing setting machine waste gas treatment system to operate stably and reduce the corrosion of the inner wall by dirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the position relationship of the overall device of the present invention; Figure 2It is a cross-sectional view of the overall device of the present invention; Figure 3 It is a schematic diagram of the positional relationship of the exhaust gas collection device, the condensation treatment device, the preliminary screening component, and the impurity collection component of the present invention; Figure 4 This is a schematic diagram of the positional relationship between the preliminary screening component and the impurity collecting component of the present invention; Figure 5 For the present invention Figure 4 A magnified view of the structure at center; Figure 6 It is a schematic diagram of the positional relationship between the condensation treatment device and the anti-sticking component of the present invention; Figure 7 This is a schematic diagram of the positional relationship of the anti-sticking components of the present invention; Figure 8 This is a schematic diagram of the position relationship among the positioning plate, the positioning gear plate rod, and the driving gear rod of the present invention; Fig. 9 This is a schematic diagram of the position relationship of the driving gear rod, the fan-shaped block, and the connecting column of the present invention; Fig.10 It is a schematic diagram of the position relationship among the rotating disk, the positioning ring assembly and the arc-shaped scraper of the present invention.

[0021] Reference numerals: 11, printing and dyeing setting equipment; 12, exhaust gas collection device; 13, condensation treatment device; The preliminary screening assembly includes: 21, a sealing shell; 22, an eccentric air inlet; 23, a funnel-shaped air separation groove; 24, an air outlet block; The impurity collection component includes: 31, a vent pipe; 32, a sticky plate; 33, a drain port; The anti-sticking assembly includes: 41, a positioning plate; 42, a positioning gear plate rod; 43, a driving gear rod; 44, a fan-shaped block; 45, a connecting column; 46, a rotating disk; 47, a fan-shaped slide groove; 48, a cross slide groove; 49, a positioning ring group; 410, an arc scraper; 411, a driving device. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In the description of the present invention, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0024] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0025] Example 1: Example 1 Figures 1 to 10 As shown, a multi-stage condensation treatment device and a condensation treatment method for waste gas for a printing and dyeing setting machine provided by an embodiment of the present invention include a printing and dyeing setting device 11, a waste gas collecting device 12 and a condensation treatment device 13, the waste gas collecting device 12 and the condensation treatment device 13 are both arranged above the printing and dyeing setting device 11, a preliminary screening component for preliminary treatment of the waste gas is arranged between the waste gas collecting device 12 and the condensation treatment device 13, an impurity collection component for collecting waste gas impurities is arranged at the bottom of the preliminary screening component, and an anti-sticking component for preventing sticking during the condensation process is arranged inside the condensation treatment device 13.

[0026] The preliminary screening assembly includes a sealing shell 21, which is connected to the top of the exhaust gas collecting device 12. An eccentric air inlet 22 is provided on one side of the sealing shell 21 close to the exhaust gas collecting device 12. A funnel-shaped air separation groove 23 is provided at the bottom of the sealing shell 21. The top of the sealing shell 21 is fixedly connected to an air outlet block 24.

[0027] The impurity collecting assembly includes a vent pipe 31 , which is fixedly connected to the bottom of the sealing shell 21 , an adhesive plate 32 is arranged inside the vent pipe 31 , and a drain port 33 is opened at the bottom of the vent pipe 31 .

[0028] The anti-sticking component includes a positioning plate 41, which is fixedly connected to the inner wall of the condensation processing device 13. The positioning plate 41 is internally rotatably connected to a positioning gear disc rod 42 and a driving gear rod 43. The end of the driving gear rod 43 away from the positioning plate 41 is fixedly connected to a fan-shaped block 44, and a connecting column 45 is provided on the side of the fan-shaped block 44 away from the positioning plate 41.

[0029] The anti-sticking component also includes a rotating disk 46, which is rotatably connected to the inside of the positioning gear disk rod 42. The outer wall of the rotating disk 46 is annularly provided with four fan-shaped grooves 47, and the outer wall of the rotating disk 46 is provided with a cross groove 48. The side of the rotating disk 46 away from the positioning gear disk rod 42 is fixedly connected to a positioning ring group 49, and the outer wall of the positioning ring group 49 is symmetrically fixedly connected with an arc scraper 410. A driving device 411 is arranged inside the condensation processing device 13.

[0030] One end of the air outlet block 24 away from the sealing shell 21 is fixedly connected to the condensation processing device 13 , so that the air passing through the inside of the sealing shell 21 can flow into the inside of the condensation processing device 13 along the air outlet block 24 .

[0031] The positioning gear plate rod 42 is meshed with the driving gear rod 43, so that the driving gear rod 43 can be driven to rotate during the rotation of the positioning gear plate rod 42. The connecting column 45 is slidably connected to the inside of the cross slide 48, so that when the connecting column 45 rotates, the rotating plate 46 can be driven to rotate through the cross slide 48. The positioning gear plate rod 42 is fixedly connected to the output shaft of the driving device 411, so that when the driving device 411 is started, it can drive the positioning gear plate rod 42 to rotate.

[0032] Embodiment 2: A multi-stage condensation treatment method for waste gas from a printing and dyeing setting machine, comprising the following steps: Step 1: collecting the waste gas generated by the printing and dyeing setting equipment 11 through the waste gas collection device 12; Step 2: The waste gas collected by the waste gas collection device 12 is transported to the inside of the sealed shell 21 through the eccentric air inlet 22, and after preliminary screening by the sealed shell 21, it is discharged into the inside of the condensation treatment device 13 through the air outlet block 24. In this process, the air tightness of the transmission needs to be ensured; Step 3: The preliminarily pretreated exhaust gas is introduced into the first stage condensation equipment, the second stage condensation equipment, and the third stage condensation equipment in sequence, wherein the temperature of the three stages condensation equipment is gradually reduced, thereby condensing different impurities in the exhaust gas. At the same time, the refrigerant is selected, and cold water or ethylene glycol aqueous solution is used to ensure that its purity and performance meet the requirements, and the concentration of ethylene glycol aqueous solution is adjusted according to the actual required condensation temperature; Step 4: If the content of organic pollutants in the exhaust gas still does not meet the emission standards after multiple stages of condensation, an activated carbon adsorption device can be used for further treatment. Because activated carbon has a rich pore structure, it can adsorb organic matter in the exhaust gas, thereby further purifying the exhaust gas; Step 5: Regularly start the driving device 411 to clean the condensation processing device 13 to prevent the dried liquid from accumulating on the inner wall of the condensation processing device 13 and affecting the normal condensation effect.

[0033] Working principle: In the initial state, one end of the sector block 44 away from the connecting column 45 is located inside the sector sliding groove 47 .

[0034] During operation, the staff first needs to start the exhaust gas collection device 12 and the condensation treatment device 13. Then, the exhaust gas collection device 12 transports the exhaust gas generated by the printing and dyeing setting device 11 to the inside of the sealed shell 21 through the eccentric air inlet 22. Since the eccentric air inlet 22 is eccentrically opened inside the sealed shell 21, the dusty exhaust gas will flow into the inside of the sealed shell 21 in a vortex shape along the eccentric air inlet 22. Then, the vortex-shaped dusty exhaust gas will flow along the funnel-shaped gas separation groove 23. At this time, the particles in the dusty exhaust gas are thrown to the wall of the sealed shell 21 and separated from the airflow under the action of centrifugal force. The waste gas with dust and printing and dyeing impurities removed turns upward after reaching the bottom of the cone of the funnel-shaped gas separation groove 23, and rotates upward along the axis of the sealing shell 21. Due to the high-speed rotation of the airflow, negative pressure is generated in the area of ​​the central axis of the sealing shell 21. After the airflow reaches the bottom of the cone of the funnel-shaped gas separation groove 23, it is sucked by the negative pressure, and the waste gas with dust and impurities removed goes upward along the central axis, and is finally discharged into the condensation treatment device 13 from the air outlet block 24, thereby separating the dust and printing and dyeing impurities in the waste gas, removing most of the large particle pollutants, reducing the load of subsequent condensation treatment, and improving the efficiency and effect of the entire waste gas treatment system. At the same time, the pre-treated waste gas is conducive to heat transfer and the phase change process of matter, so that the condensation effect of the condensation treatment device 13 is better, and the organic pollutants in the waste gas can be more fully condensed into liquid.

[0035] Under the action of gravity, the particles in the dust-containing exhaust gas will slide along the wall of the sealing shell 21 into the ventilation pipe 31. For example, various impurities such as fiber fluff, dye particles, dust, etc. collected by the exhaust gas collection device 12 during the printing and dyeing process will be adhered to the surface of the adhesive plate 32, and some liquid impurities will pass through the adhesive plate 32 and be discharged from the drain port 33, thereby realizing automatic cleaning and collection of impurities, avoiding the residue and accumulation of impurities inside the equipment, preventing impurities from being re-lifted inside the equipment or drifting to subsequent processing links, and reducing secondary pollution caused by improper impurity handling.

[0036] When the staff turns on the driving device 411, the driving device 411 drives the positioning gear plate rod 42 fixedly connected to the output shaft to rotate, and the positioning gear plate rod 42 is meshed with the driving gear rod 43, and the driving gear rod 43 is driven to rotate during the rotation of the positioning gear plate rod 42; When the driving gear rod 43 rotates, the connecting column 45 is driven to rotate. Since the connecting column 45 is slidably connected to the inside of the cross slide 48, when the connecting column 45 rotates, the rotating plate 46 is driven by the cross slide 48 to rotate 90 degrees. When the connecting column 45 moves out of the cross slide 48, the end of the driving gear rod 43 away from the connecting column 45 will contact the fan-shaped slide 47, thereby ensuring the stability of the driving gear rod 43 in rotating the rotating disk 46 through the connecting column 45. During the rotation of the rotating disk 46, the two arc-shaped scrapers 410 will be driven to rotate synchronously through the positioning ring set 49. Because the positioning gear plate rod 42 will continue to drive the gear rod 43 to rotate, the driving gear rod 43 will continue to drive the rotating disk 46 to rotate through the connecting column 45 and the cross slide 48, and finally the two arc scrapers 410 will continuously scrape the liquid on the inner wall of the condensation treatment device 13 to prevent the liquid from drying up and sticking to the inner wall of the condensation treatment device 13 after the equipment stops running. The inner wall of the condensation treatment device 13 is continuously scraped during the operation of the equipment to prevent the formation of a dirt layer, and effectively avoid the sticking problem caused by the drying of the liquid during the equipment stopping operation, so that the heat exchange efficiency of the condensation treatment device 13 is always maintained at a relatively stable level, and the heat exchange performance will not decrease due to the gradual accumulation of dirt on the inner wall, thereby contributing to the stable operation of the exhaust gas treatment system of the entire printing and dyeing setting machine, and at the same time, reducing the corrosion of the inner wall of the condensation treatment device 13 by dirt.

[0037] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-stage condensation treatment device for waste gas of a printing and dyeing setting machine, comprising a printing and dyeing setting device (11), a waste gas collecting device (12) and a condensation treatment device (13), wherein the waste gas collecting device (12) and the condensation treatment device (13) are both arranged above the printing and dyeing setting device (11), and characterized in that: A preliminary screening component for preliminary treatment of the waste gas is arranged between the waste gas collection device (12) and the condensation treatment device (13); an impurity collection component for collecting waste gas impurities is arranged at the bottom of the preliminary screening component; and an anti-sticking component for preventing sticking during the condensation process is arranged inside the condensation treatment device (13).

2. The multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to claim 1 is characterized in that: The preliminary screening assembly comprises a sealing shell (21), the sealing shell (21) being connected to the top of the exhaust gas collecting device (12), an eccentric air inlet (22) being provided on a side of the sealing shell (21) close to the exhaust gas collecting device (12), a funnel-shaped air separation groove (23) being provided at the bottom of the sealing shell (21), and a gas outlet block (24) being fixedly connected to the top of the sealing shell (21).

3. The multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to claim 2 is characterized in that: The impurity collection assembly comprises a vent pipe (31), the vent pipe (31) is fixedly connected to the bottom of the sealing shell (21), a sticky plate (32) is arranged inside the vent pipe (31), and a liquid discharge port (33) is provided at the bottom of the vent pipe (31).

4. The multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to claim 1 is characterized in that: The anti-sticking component comprises a positioning plate (41), the positioning plate (41) being fixedly connected to the inner wall of the condensation processing device (13), the interior of the positioning plate (41) being rotatably connected to a positioning gear plate rod (42) and a driving gear rod (43), one end of the driving gear rod (43) away from the positioning plate (41) being fixedly connected to a fan-shaped block (44), and a connecting column (45) being provided on a side of the fan-shaped block (44) away from the positioning plate (41).

5. The multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to claim 4 is characterized in that: The anti-sticking component also includes a rotating disk (46), the rotating disk (46) is rotatably connected to the inside of the positioning gear disk rod (42), the outer wall of the rotating disk (46) is provided with four fan-shaped sliding grooves (47) in an annular shape, the outer wall of the rotating disk (46) is provided with a cross sliding groove (48), the side of the rotating disk (46) away from the positioning gear disk rod (42) is fixedly connected to a positioning ring group (49), the outer wall of the positioning ring group (49) is symmetrically fixedly connected to an arc scraper (410), and the interior of the condensation processing device (13) is provided with a driving device (411).

6. The multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to claim 2 is characterized in that: One end of the gas outlet block (24) away from the sealing shell (21) is fixedly connected to the condensation processing device (13).

7. The multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to claim 5 is characterized in that: The positioning gear plate rod (42) is meshed with the driving gear rod (43), the connecting column (45) is slidably connected to the inside of the cross slide groove (48), and the positioning gear plate rod (42) is fixedly connected to the output shaft of the driving device (411).

8. A multi-stage condensation treatment method for waste gas from a printing and dyeing setting machine, the method being applied to the multi-stage condensation treatment equipment for waste gas from a printing and dyeing setting machine according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: Step 1: collecting waste gas generated by the printing and dyeing setting equipment (11) through the waste gas collection device (12); Step 2: the waste gas collected by the waste gas collection device (12) is transported to the interior of the sealed shell (21) through the eccentric air inlet (22), and after preliminary screening by the sealed shell (21), is discharged into the interior of the condensation treatment device (13) through the air outlet block (24). During this process, the air tightness of the transmission needs to be ensured; Step 3: The preliminarily pretreated exhaust gas is introduced into the first stage condensation equipment, the second stage condensation equipment, and the third stage condensation equipment in sequence, wherein the temperature of the three stages condensation equipment is gradually reduced, thereby condensing different impurities in the exhaust gas; Step 4: If the content of organic pollutants in the exhaust gas still does not meet the emission standards after multiple stages of condensation, further treatment is performed using a device that can absorb organic matter in the exhaust gas to further purify the exhaust gas; Step 5: Regularly start the driving device (411) to clean the condensation processing device (13) to prevent dried liquid from accumulating on the inner wall of the condensation processing device (13) and affecting the normal condensation effect.

9. A multi-stage condensation treatment method for waste gas from a printing and dyeing setting machine according to claim 8, characterized in that: In the step three, the refrigerant is selected by using cold water or ethylene glycol aqueous solution to ensure that its purity and performance meet the requirements, and the concentration of the ethylene glycol aqueous solution is adjusted according to the actual required condensation temperature.

10. The method for treating waste gas from a printing and dyeing setting machine by multi-stage condensation according to claim 8, characterized in that: In the step 4, the device may adopt an activated carbon adsorption device, because the activated carbon has a rich pore structure and can adsorb organic matter in the exhaust gas.

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