Multi-stage collaborative purification device for pigment production waste gas

Abstract

The invention discloses a multistage collaborative purification device for pigment production waste gas, and relates to the technical field of waste gas treatment, the multistage collaborative purification device comprises a plurality of filter barrels, a collaborative gas dissolving assembly, a filter screen, a liquid pump and the like, and the waste gas is purified by adopting a staged filtration and gas-liquid combination mode. Waste gas enters the first filtering barrel through the waste gas inlet, enters the second filtering barrel after being preliminarily filtered and makes contact with a dissolving solution, airflow generates fine bubbles through the synergistic gas dissolving assembly, and the absorption effect of the waste gas is enhanced. The dissolving liquid in the filter barrel II can be recycled, and the liquid pump and the filter box are used for cleaning, so that the purification effect is kept. And after being subjected to multi-stage treatment, the waste gas is finally deodorized and purified through the filter vat III. The device has the advantages of being compact in structure, high in energy efficiency and easy to maintain and clean, the waste gas purification efficiency is effectively improved, energy consumption is reduced, and good environmental protection and economic benefits are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to a multi-stage coordinated purification device for waste gas produced by pigment production. Background Art

[0002] A large amount of waste gas is generated during the pigment production process. These waste gases usually contain harmful volatile organic compounds (VOCs), dust, odor substances, etc., which not only pollute the environment but also threaten the health of production workers. Therefore, waste gas treatment has become an important issue that needs to be solved in the pigment production industry.

[0003] In the prior art, a large amount of waste gas generated in pigment production is usually discharged after being filtered through multiple activated carbon nets. The treatment effect is limited by the saturation of the adsorbent, and the adsorbent material needs to be replaced regularly, which increases the maintenance cost. Therefore, the present invention provides a multi-stage coordinated purification device for pigment production waste gas to solve one or more of the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a multi-stage coordinated purification device for pigment production waste gas to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions, including: filter barrel one, filter barrel two and filter barrel three, filter barrel one and filter barrel two are connected by a connecting pipe one, filter barrel two and filter barrel three are connected by an exhaust pipe, a filter box is provided on the rear side of filter barrel two, and the filter box is circulated and connected with filter barrel two through connecting pipes two and connecting pipes three, a driving impeller is installed in filter barrel one, an overflow sewage discharge component is installed in filter barrel two, and a cooperative gas dissolution component is installed at the bottom of the overflow sewage discharge component.

[0008] Preferably, a waste gas inlet is provided at the top of filter barrel one, an exhaust pipe, a liquid outlet and a liquid inlet are provided on the outer wall of filter barrel two, an exhaust port one is opened on the outer wall of filter barrel one, and one end of connecting pipe one is connected with filter barrel one through exhaust port one, and the other end of connecting pipe one passes through filter barrel two and is installed with an overflow sewage discharge component.

[0009] Preferably, filter screen one is movably installed in filter barrel one, and filter screen one is located at the top of driving impeller, a handle is fixedly provided on the outer frame of filter screen one, a guide plate one is provided between filter screen one and driving impeller, and one end of guide plate one is fixedly connected to the inner wall of filter barrel one, an air flow groove is left between the other end of guide plate one and the inner wall of filter barrel one, and guide plate two is provided below driving impeller, and guide plate two is fixedly connected to the inner wall of filter barrel one.

[0010] Preferably, one end of the driving rod is rotatably connected to the inner wall of filter barrel one, and the other end of the driving rod movably passes through filter barrel one and extends into filter barrel two. A stirring blade is installed on the end of the driving rod extending into filter barrel two, and the driving impeller is fixedly sleeved on the outer wall of the driving rod.

[0011] Preferably, one end of connecting pipe 2 is connected to filter barrel 2 through the liquid outlet, and the other end of connecting pipe 2 is connected to filter barrel 2 through the liquid inlet. Several groups of filter tanks are provided in the filter box, and filter screen 2 is installed in each group of filter tanks. A support frame is fixed on the top of filter screen 2, and liquid pump 2 is installed on connecting pipe 2.

[0012] Preferably, the overflow sewage discharge component includes: a filter residue ring, which is movably connected to the outer wall of a connecting pipe 1 located in the filter barrel 2, a circle of residue inlet is opened around the outer wall of the filter residue ring, a residue storage cavity is opened in the filter residue ring, and an oblique drainage groove is extended between the residue storage cavity and the residue inlet, a floating ring is connected to the outer wall of the filter residue ring through a fixed ring, a liquid outlet pipe is arranged in the residue storage cavity, and the filter residue ring extends from the top of the liquid outlet pipe, a sealing head is provided on the top of the filter residue ring, a liquid pump 1 is installed on the outer wall of the filter barrel 2, and the liquid pump 1 is connected to the liquid outlet pipe through a hose.

[0013] Preferably, the collaborative air dissolving component includes: an air-guiding shell, a through hole is opened on the top of the air-guiding shell, a connecting pipe is connected with the air-guiding shell through the through hole, a plurality of groups of discrete units are installed in the air-guiding shell, a plurality of groups of exhaust holes are opened at the bottom of the air-guiding shell, and each group of exhaust holes corresponds to a group of discrete units one by one, and a central cyclone gas dispersed part is installed in the center of the air-guiding shell.

[0014] Preferably, the discrete unit includes: an air dispersion duct, the top of the air dispersion duct extends upward to form a "trumpet" shape, a conical guide channel is provided in the air dispersion duct, and a plurality of connecting holes are provided on the inner wall of the conical head of the conical guide channel, the connecting holes are connected with the transverse air guide groove, the transverse air guide groove is provided in the air dispersion duct shell and is in the same horizontal plane as the conical head displacement of the conical guide channel, the discrete disk is fixedly connected to the inner wall of the air dispersion duct, and the discrete disk is located on the bottom surface of the conical guide channel, and the rotary fan blades are movably installed on the bottom of the inner wall of the air dispersion duct.

[0015] Preferably, the central cyclone gas dispersion component comprises: a support ring 1 and a support ring 2, a plurality of groups of discrete blades 1 are fixedly arranged between the support ring 1 and the support ring 2, a plurality of groups of discrete blades 2 are fixedly arranged on a side of the support ring 2 away from the discrete blades 1, and the support ring 1 and the support ring 2 are both rotatably connected to the bottom center of the air guide housing.

[0016] Preferably, the rotation direction of discrete blade one is opposite to that of discrete blade two.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The multi-stage coordinated purification device for pigment production waste gas has the following beneficial effects:

[0019] 1. Multi-stage purification to improve the waste gas treatment effect: The device can effectively perform multiple purification treatments such as preliminary filtration, particle adsorption, and gas dissolution on the waste gas through the combination of layer-by-layer filtration of three filter barrels and coordinated gas dissolution components, thereby greatly improving the waste gas treatment effect, especially in removing harmful substances and odors in the waste gas.

[0020] 2. Efficient gas-liquid combination to enhance waste gas absorption: The coordinated dissolved gas component generates fine bubbles by breaking up the airflow, which can accelerate the combination of particles in the waste gas with the dissolved liquid, so that the dissolved liquid can efficiently absorb harmful substances in the waste gas and improve the purification efficiency. The particles in the waste gas float on the liquid surface combined with the bubbles, which is convenient for further removal and treatment.

[0021] 3. Recycle the dissolved liquid to save resources: The dissolved liquid is recycled in the system. The dissolved liquid is pumped into the filter box for filtration through a liquid pump and then returned to the filter barrel, reducing resource waste and maintaining the continuous and effective purification ability of the liquid.

[0022] 4. Automatic cleaning and easy replacement: The filter screen and other components such as filter ring, support frame, etc. are designed to be easy to disassemble, clean and replace, which facilitates maintenance and reduces operating difficulty and downtime.

[0023] 5. Energy saving and consumption reduction, optimized operation: The device ensures that the waste gas is in full contact with the dissolved liquid during the treatment process through precise air and liquid flow control, avoiding the waste of dissolved liquid and air flow, optimizing the system energy efficiency and reducing energy consumption.

[0024] 6. Unique overflow discharge design: The overflow discharge assembly combines a floating ring and a filter ring to ensure that dirt and particulate matter can be promptly drained into the slag storage chamber through the slag inlet and discharged, thereby effectively maintaining the cleanliness of the dissolved liquid and extending the service life of the dissolved liquid.

[0025] 7. Airflow dispersion and cyclone design to improve bubble density: The airflow dispersion technology of the coordinated dissolved air component can produce more uniform and dense bubbles in the dissolved liquid through discrete units and cyclone air dispersion components, effectively increasing the contact area and reaction rate between the exhaust gas and the dissolved liquid, thereby significantly improving the exhaust gas purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a three-dimensional schematic diagram of a filter barrel in the present invention;

[0028] Figure 3 It is a schematic diagram of the filter box structure in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the overflow sewage discharge component in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the cooperative gas dissolving component in the present invention;

[0031] Figure 6 It is a schematic diagram of the discrete unit structure in the present invention;

[0032] Figure 7 It is a schematic diagram of the installation position of the central cyclone gas disperser in the present invention.

[0033] Figure 8 It is a schematic diagram of the structure of the central cyclone gas dispersion element in the present invention.

[0034] In the figure: 1, filter barrel 1; 2, connecting pipe 1; 3, filter barrel 2; 4, filter barrel 3; 5, exhaust gas inlet; 6, filter screen 1; 7, driving rod; 8, driving impeller; 9, liquid pump 1; 10, exhaust pipe; 11, stirring blade; 12, hose; 13, liquid outlet; 14, liquid inlet; 15, overflow sewage discharge component; 16, coordinated air dissolution component; 17, air flow groove; 18, handle; 19, drainage plate 1; 20, exhaust port 1; 21, drainage plate 2; 22, connecting pipe 2; 23, liquid pump 2; 24, filter box; 25, filter tank; 26. Filter screen two; 27. Support frame; 28. Connecting pipe three; 29. ​​Filter residue ring; 30. Slag inlet; 31. Floating ring; 32. Drainage groove; 33. Slag storage chamber; 34. Fixed ring; 35. Liquid outlet pipe; 36. Sealing head; 37. Air guide shell; 38. Through hole; 39. Discrete unit; 40. Exhaust hole; 41. Central swirl gas dispersion component; 42. Gas dispersion pipeline; 43. Rotary fan blade; 44. Discrete disk; 45. Conical guide channel; 46. Connecting hole; 47. Transverse air guide groove; 48. Support ring one; 49. Discrete blade one. DETAILED DESCRIPTION

[0035] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish the protective components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Example 1

[0037] See also Figure 1-Figure 3 A technical means provided by the present invention includes: a filter barrel 1, a filter barrel 2 3 and a filter barrel 3 4, the filter barrel 1 1 and the filter barrel 2 3 are connected by a connecting pipe 2, the filter barrel 2 3 and the filter barrel 3 4 are connected by an exhaust pipe 10, a filter box 24 is provided on the rear side of the filter barrel 2 3, and the filter box 24 is cyclically connected with the filter barrel 2 3 through a connecting pipe 2 22 and a connecting pipe 3 28, a driving impeller 8 is installed in the filter barrel 1, an overflow sewage discharge component 15 is installed in the filter barrel 2 3, and a cooperative gas dissolution component 16 is installed at the bottom of the overflow sewage discharge component 15.

[0038] Preferably, a waste gas inlet 5 is provided on the top of the filter barrel 1, an exhaust pipe 10, a liquid outlet 13 and a liquid inlet 14 are provided on the outer wall of the filter barrel 23, an exhaust port 20 is opened on the outer wall of the filter barrel 1, and one end of the connecting pipe 2 is connected with the filter barrel 1 through the exhaust port 20, and the other end of the connecting pipe 2 passes through the filter barrel 23 and is installed with an overflow sewage discharge component 15.

[0039] Preferably, the filter screen 6 is movably installed in the filter barrel 1, and the filter screen 6 is located at the top of the driving impeller 8, and a handle 18 is fixedly provided on the outer frame of the filter screen 6, and a guide plate 19 is provided between the filter screen 6 and the driving impeller 8, and one end of the guide plate 19 is fixedly connected to the inner wall of the filter barrel 1, and an air flow groove 17 is left between the other end of the guide plate 19 and the inner wall of the filter barrel 1, and the guide plate 21 is provided below the driving impeller 8, and the guide plate 21 is fixedly connected to the inner wall of the filter barrel 1.

[0040] Preferably, one end of the driving rod 7 is rotatably connected to the inner wall of the filter barrel 1, and the other end of the driving rod 7 movably passes through the filter barrel 1 and extends into the filter barrel 2 3. A stirring blade 11 is installed at one end of the driving rod 7 extending into the filter barrel 2 3, and the driving impeller 8 is fixedly sleeved on the outer wall of the driving rod 7.

[0041] Preferably, one end of the connecting pipe 22 is connected to the filter barrel 23 through the liquid outlet 13, and the other end of the connecting pipe 22 is connected to the filter barrel 23 through the liquid inlet 14. A plurality of groups of filter tanks 25 are provided in the filter box 24, and a filter screen 26 is installed in each group of filter tanks 25. A support frame 27 is fixed on the top of the filter screen 26, and a liquid pump 23 is installed on the connecting pipe 22.

[0042] Preferably, the filter barrel 2 3 is filled with a dissolving liquid, and the level of the dissolving liquid is slightly lower than the horizontal plane of the top of the overflow discharge component 15 .

[0043] The working principle and beneficial effects of the above scheme are as follows: when in use, the pigment production waste gas is input into the filter barrel 1 through the waste gas inlet 5 and is initially filtered through the filter net 6. Then, the waste gas blows along the air flow groove 17 to drive the impeller 8 to rotate while driving the drive rod 7 to rotate. Then, it enters the filter barrel 2 3 through the exhaust port 20 along the connecting pipe 2. The waste gas after preliminary treatment is discharged into the dissolved liquid along the connecting pipe 2 through the cooperative gas dissolving component 16. At the same time, the driving rod 7 can drive the stirring blade 11 to rotate, thereby accelerating the absorption of the waste gas. The cooperative gas dissolving component 16 can break up the airflow to produce denser bubbles in the dissolved liquid, and then the dissolved liquid is combined with the particulate matter in the waste gas, thereby producing a purification effect. Then, the dense bubbles combined with the particulate matter in the waste gas float on the upper surface of the dissolved liquid and are collected and discharged through the overflow discharge component 15. The waste gas purified by the filter barrel 2 3 enters the filter barrel 3 4 through the exhaust pipe 10 for the final deodorization and purification before being discharged.

[0044] Among them, the dissolved liquid in the filter barrel 23 will be intermittently pumped into the filter box 24 along the connecting pipe 22 through the liquid pump 23, and then filtered through several groups of filter nets 26 in turn, and then enter the filter barrel 23 again along the connecting pipe 3 28 for recycling, and the filter net 26 can be pulled out through the support frame 27 for cleaning or replacement.

[0045] Example 2

[0046] Based on Example 1, please refer to Figure 1 and Figure 4 The overflow sewage discharge component 15 includes: a filter residue ring 29, which is movably sleeved on the outer wall of the connecting pipe 2 located in the filter barrel 3, and a circle of slag inlet 30 is arranged around the outer wall of the filter residue ring 29. A slag storage cavity 33 is arranged in the filter residue ring 29, and an oblique drainage groove 32 is extended between the slag storage cavity 33 and the slag inlet 30. The floating ring 31 is sleeved on the outer wall of the filter residue ring 29 through a fixed ring 34. A liquid outlet pipe 35 is arranged in the slag storage cavity 33, and the filter residue ring 29 is extended from the top of the liquid outlet pipe 35. A sealing head 36 is arranged on the top of the filter residue ring 29. A liquid pump 9 is installed on the outer wall of the filter barrel 3, and the liquid pump 9 is connected to the liquid outlet pipe 35 through a hose 12.

[0047] The working principle and beneficial effects of the above scheme are as follows: denser bubbles are generated in the dissolved liquid by cooperating with the gas dissolving component 16, and the dense bubbles combined with the particles in the exhaust gas will float on the upper surface of the dissolved liquid, thereby causing ripples on the surface of the dissolved liquid, and when the surging ripples are higher than the slag inlet 30, the dirt particles will enter the slag storage chamber 33 along the drainage groove 32, and then the dirt accumulated in the slag storage chamber 33 will be discharged through the liquid outlet pipe 35 along the hose 12 by starting the liquid pump 9, thereby ensuring the absorption amount of the dissolved liquid, and the setting of the floating ring 31 can ensure that the horizontal plane of the filter residue ring 29 is always slightly higher than the liquid surface of the dissolved liquid.

[0048] Example 3

[0049] Based on any one of Examples 1-2, please refer to Figure 5-Figure 8 The coordinated air dissolving component 16 includes: an air guide shell 37, a through hole 38 is opened on the top of the air guide shell 37, a connecting pipe 2 is connected to the air guide shell 37 through the through hole 38, a plurality of groups of discrete units 39 are installed in the air guide shell 37, a plurality of groups of exhaust holes 40 are opened at the bottom of the air guide shell 37, and each group of exhaust holes 40 corresponds to a group of discrete units 39, and a central cyclone gas component 41 is installed in the center of the air guide shell 37.

[0050] Preferably, the discrete unit 39 includes: an air dispersion pipeline 42, the top of the air dispersion pipeline 42 extends upward to form a "trumpet" shape, a conical guide channel 45 is provided in the air dispersion pipeline 42, and a plurality of connecting holes 46 are provided on the inner wall of the conical head of the conical guide channel 45, the connecting holes 46 are connected with the transverse air guide groove 47, the transverse air guide groove 47 is provided in the shell of the air dispersion pipeline 42 and is in the same horizontal plane as the conical head displacement of the conical guide channel 45, the discrete disk 44 is fixedly connected to the inner wall of the air dispersion pipeline 42, and the discrete disk 44 is located on the bottom surface of the conical guide channel 45, and the rotary fan blade 43 is movably installed on the bottom of the inner wall of the air dispersion pipeline 42.

[0051] Preferably, the central cyclone gas dispersion element 41 includes: a support ring 1 48 and a support ring 2 50, a plurality of groups of discrete blades 1 49 are fixedly arranged between the support ring 1 48 and the support ring 2 50, a plurality of groups of discrete blades 2 51 are fixedly arranged on the side of the support ring 2 50 away from the discrete blades 1 49, and the support ring 1 48 and the support ring 2 50 are both rotatably connected to the bottom center of the air guide housing 37,

[0052] Preferably, the discrete blade 1 49 and the discrete blade 2 51 have opposite rotation directions.

[0053] Preferably, a plurality of air holes are formed on the surface of the discrete disk 44 .

[0054] The working principle and beneficial effects of the above scheme are as follows: the exhaust gas enters the air guide shell 37 through the through hole 38 along the connecting pipe 2. At this time, most of the exhaust gas accumulated in the air guide shell 37 is dispersed and enters the air dispersion pipe 42 along the "trumpet"-shaped bottom of the air dispersion pipe 42. First, it passes through the tapered end of the tapered guide channel 45. A part of the exhaust gas enters the transverse air guide groove 47 through several groups of connecting holes 46 for acceleration and then hits the central vortex air dispersion element 41. The remaining exhaust gas passes through the tapered guide channel 45 for decompression and is discharged downward from several air holes on the discrete disk 44, thereby pushing the rotary fan blades 43 to rotate and then be discharged into the dissolved liquid, thereby being able to produce denser bubbles in the dissolved liquid.

[0055] At the same time, while another part of the exhaust gas passes through the center of the central cyclone gas dispersion element 41 and is discharged into the dissolved liquid, the exhaust gas accelerated by the transverse air guide groove 47 blows on the discrete blade 1 49 and the discrete blade 2 51, thereby driving the support ring 1 48 and the support ring 2 50 to rotate, thereby changing the discrete angle of the part of the exhaust gas passing through the central cyclone gas dispersion element 41, so that the exhaust gas entering the dissolved liquid is more dispersed, which can improve the utilization rate of the dissolved liquid and make the exhaust gas and the dissolved liquid combine more fully, thereby improving the purification effect.

[0056] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-stage coordinated purification device for pigment production waste gas, characterized in that: include: A filter barrel 1 (1), a filter barrel 2 (3) and a filter barrel 3 (4) are provided. The filter barrel 1 (1) and the filter barrel 2 (3) are connected via a connecting pipe 1 (2), and the filter barrel 2 (3) and the filter barrel 3 (4) are connected via an exhaust pipe (10). A filter box (24) is provided at the rear side of the filter barrel 2 (3), and the filter box (24) is cyclically connected with the filter barrel 2 (3) via a connecting pipe 2 (22) and a connecting pipe 3 (28). A driving impeller (8) is installed in the filter barrel 1 (1), an overflow discharge assembly (15) is installed in the filter barrel 2 (3), and a cooperative gas dissolving assembly (16) is installed at the bottom of the overflow discharge assembly (15).

2. The multi-stage coordinated purification device for pigment production waste gas according to claim 1, characterized in that: The top of the filter barrel (1) is provided with an exhaust gas inlet (5), the outer wall of the filter barrel (3) is provided with an exhaust pipe (10), a liquid outlet (13) and a liquid inlet (14), the outer wall of the filter barrel (1) is provided with an exhaust port (20), and one end of the connecting pipe (2) is connected with the inside of the filter barrel (1) through the exhaust port (20), and the other end of the connecting pipe (2) passes through the inside of the filter barrel (3) and is provided with an overflow sewage discharge assembly (15).

3. The multi-stage coordinated purification device for pigment production waste gas according to claim 1, characterized in that: The filter screen (6) is movably installed in the filter barrel (1), and the filter screen (6) is located at the top of the driving impeller (8). A handle (18) is fixedly provided on the outer frame of the filter screen (6). A guide plate (19) is provided between the filter screen (6) and the driving impeller (8), and one end of the guide plate (19) is fixedly connected to the inner wall of the filter barrel (1), and an air flow groove (17) is left between the other end of the guide plate (19) and the inner wall of the filter barrel (1). The guide plate (21) is provided below the driving impeller (8), and the guide plate (21) is fixedly connected to the inner wall of the filter barrel (1).

4. The multi-stage coordinated purification device for pigment production waste gas according to claim 3, characterized in that: One end of the driving rod (7) is rotatably connected to the inner wall of the first filter barrel (1), and the other end of the driving rod (7) movably passes through the first filter barrel (1) and extends into the second filter barrel (3). A stirring blade (11) is installed at one end of the driving rod (7) extending into the second filter barrel (3), and a driving impeller (8) is fixedly sleeved on the outer wall of the driving rod (7).

5. The multi-stage coordinated purification device for pigment production waste gas according to claim 1, characterized in that: One end of the second connecting pipe (22) is connected to the second filter barrel (3) through the liquid outlet (13), and the other end of the second connecting pipe (22) is connected to the second filter barrel (3) through the liquid inlet (14). A plurality of groups of filter tanks (25) are arranged in the filter box (24), and a second filter screen (26) is installed in each group of filter tanks (25). A support frame (27) is fixed on the top of the second filter screen (26). A second liquid pump (23) is installed on the second connecting pipe (22).

6. The multi-stage coordinated purification device for pigment production waste gas according to claim 1, characterized in that: The overflow sewage discharge component (15) comprises: a filter residue ring (29), the filter residue ring (29) is movably sleeved on the outer wall of the connecting pipe (2) located in the filter barrel (3), a circle of slag inlet (30) is arranged around the outer wall of the filter residue ring (29), a slag storage cavity (33) is arranged in the filter residue ring (29), and an oblique drainage groove (32) is extended between the slag storage cavity (33) and the slag inlet (30), a floating ring (31) is sleeved on the outer wall of the filter residue ring (29) through a fixed ring (34), a liquid outlet pipe (35) is arranged in the slag storage cavity (33), and the top of the liquid outlet pipe (35) extends out of the filter residue ring (29), and a sealing head (36) is arranged on the top of the filter residue ring (29), and a liquid pump (9) is installed on the outer wall of the filter barrel (3), and the liquid pump (9) is connected to the liquid outlet pipe (35) through a hose (12).

7. The multi-stage coordinated purification device for pigment production waste gas according to claim 1, characterized in that: The coordinated gas dissolving component (16) comprises: an air guide shell (37), a through hole (38) is provided on the top of the air guide shell (37), a connecting pipe (2) is connected with the air guide shell (37) through the through hole (38), a plurality of discrete units (39) are installed in the air guide shell (37), a plurality of exhaust holes (40) are provided on the bottom of the air guide shell (37), and each exhaust hole (40) corresponds to a discrete unit (39) one by one, and a central cyclone gas dispersed component (41) is installed in the center of the air guide shell (37).

8. The multi-stage coordinated purification device for pigment production waste gas according to claim 7, characterized in that: The discrete unit (39) comprises: an air dispersion pipeline (42), the top of which extends upward to form a "trumpet" shape, a conical flow guide channel (45) is provided in the air dispersion pipeline (42), and a plurality of groups of communication holes (46) are provided on the inner wall of the conical head of the conical flow guide channel (45), the communication holes (46) are connected to a transverse air guide groove (47), the transverse air guide groove (47) is provided in the shell of the air dispersion pipeline (42) and is in the same horizontal plane as the conical head of the conical flow guide channel (45), a discrete disk (44) is fixedly connected to the inner wall of the air dispersion pipeline (42), and the discrete disk (44) is located on the bottom surface of the conical flow guide channel (45), and a rotary fan blade (43) is movably installed on the bottom of the inner wall of the air dispersion pipeline (42).

9. The multi-stage coordinated purification device for pigment production waste gas according to claim 7, characterized in that: The central cyclone gas dispersion component (41) comprises: a support ring 1 (48) and a support ring 2 (50); a plurality of groups of discrete blades 1 (49) are fixedly arranged between the support ring 1 (48) and the support ring 2 (50); a plurality of groups of discrete blades 2 (51) are fixedly arranged on a side of the support ring 2 (50) away from the discrete blades 1 (49); and the support ring 1 (48) and the support ring 2 (50) are both rotatably connected to the bottom center of the air guide housing (37).

10. The multi-stage coordinated purification device for pigment production waste gas according to claim 9, characterized in that: The rotation direction of the discrete blade 1 (49) is opposite to that of the discrete blade 2 (51).

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