Dust falling mechanism for lignin production and processing

Abstract

The utility model provides a dust falling mechanism for lignin production and processing. The dust falling mechanism comprises a movable frame, a sewage tank fixed to the top of the movable frame, a dust falling tank fixed to the top of the sewage tank, a dust falling cavity, a water collecting cavity and an air conveying cavity, wherein the dust falling cavity, the water collecting cavity and the air conveying cavity are formed in the dust falling tank and communicated with one another. The two negative pressure fans are symmetrically assembled in the dust falling box and are both communicated with the upper end of the air conveying cavity; the dust falling part is mounted in the dust falling cavity; according to the dust falling mechanism for lignin production and processing, the dust falling part can conduct certain self-cleaning while dust falling is conducted, the dust falling effect during long-time work is effectively guaranteed, frequent maintenance by workers is not needed, under cooperation of the sewage filtering part, the dust falling effect is effectively guaranteed, and the dust falling effect is improved. And centralized treatment of dust collected during dust falling can be effectively completed, so that a dust falling water solution can be effectively recycled, and resource consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lignin fiber production technology, and more specifically, to a dust suppression mechanism for lignin production and processing. Background Technology

[0002] Lignin fiber is an organic fiber mainly used in road paving and is an indispensable stabilizer. During the production of lignin fiber, it needs to be crushed by a crusher. During the crushing process, a large amount of dust is generated. In order to ensure production safety and the health of workers, dust suppression devices are needed to remove the dust.

[0003] Currently, there are various dust suppression methods for lignin fiber crushers on the market. Generally, dust suppression is achieved by spraying an aqueous solution in conjunction with a water curtain. However, this dust removal method is very wasteful of water resources, making the dust suppression equipment less practical. Furthermore, lignin fibers contain polar groups such as phenolic hydroxyl and carboxyl groups, which easily form hydrogen bonds with water molecules, leading to increased viscosity in a wet state and easy adhesion to the water curtain. In order to ensure the dust suppression effect, the staff needs to clean the water curtain frequently, which is quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a dust suppression mechanism for lignin production and processing to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a dust suppression mechanism for lignin production and processing, comprising: a movable frame, a wastewater tank fixed to the top of the movable frame, a dust suppression box fixed to the top of the wastewater tank, and a dust suppression chamber, a water collection chamber, and an air conveying chamber disposed in the dust suppression box and interconnected with each other.

[0006] Two negative pressure fans are symmetrically assembled in the dust collection box and are both connected to the upper end of the air conveying chamber.

[0007] The dust collection unit is installed in the dust collection chamber;

[0008] A liquid supply unit is installed on the sewage tank and the dust settling tank, and the liquid supply unit is capable of delivering dust settling liquid to the dust settling unit;

[0009] A filtration section is installed in the wastewater tank and is used to collect and treat wastewater from the dust settling section.

[0010] A drive unit is mounted on the wastewater tank and the dust settling tank, and the drive unit engages with the filter unit, wherein...

[0011] The drive unit is driven to rotate the dust settling unit while the filter unit discharges wastewater.

[0012] Furthermore, the dust suppression unit includes a water guide frame fixed in the dust suppression chamber and dividing the dust suppression chamber, a mesh water curtain plate installed in the water guide frame, rotating shafts symmetrically fixed at both ends of the mesh water curtain plate, a water inlet pipe fixed at the top of the water guide frame, several flow equalization grooves opened at equal intervals on the water inlet pipe, a water collection tank fixed in the dust suppression chamber and placed on the rear side of the water guide frame, and several spiral nozzles installed at equal intervals at the bottom of the water collection tank;

[0013] The mesh water curtain plate is rotatably connected to the water guide frame via two rotating shafts.

[0014] Furthermore, the filtration unit includes a filter box fixed inside the sewage tank, a drain pipe installed at the bottom of the sewage tank and connected to the filter box, and a water collection trough opened at the bottom of the dust settling chamber, one end of which is connected to the water collection trough and the other end of which extends to the sewage pipe inside the filter box.

[0015] Furthermore, the filter unit also includes a control rod that is slidably installed inside the filter box and extends through the sewage tank at its upper end, a sealing cover that is fixed at the lower end of the control rod and used to seal the sewage pipe, a control rack that is fixed at the top of the control rod, a limiting plate that is fixed on the control rod, and a return spring that is movably sleeved on the control rod and whose two ends are fixedly connected to the upper surface of the limiting plate and the inner wall of the sewage tank, respectively.

[0016] Furthermore, the drive unit includes a drive motor mounted outside the dust collection box, fixedly connected to one of the rotating shafts, two transmission gears rotatably mounted outside the wastewater tank, a transmission rack meshing with the two transmission gears, and gear teeth meshing with one of the transmission gears and the control rack.

[0017] The output end of the drive motor is fixedly connected to one of the rotating shafts.

[0018] Furthermore, the liquid supply unit includes a water tank fixed on the top of the dust settling unit, an inlet pipe for connecting the water tank and the sewage tank, a water pump installed outside the sewage tank, a water delivery pipe with one end connected to the water outlet of the water pump and the other end connected to the water collection tank and the water inlet pipe, a water level sensor installed inside the sewage tank, and a solenoid valve installed on the inlet pipe.

[0019] The water pump's inlet pipe is connected to the sewage tank via a pipeline;

[0020] The water level sensor is electrically connected to the solenoid valve's peripheral controller.

[0021] Furthermore, several baffles are fixedly connected inside the water collection chamber, a wire mesh filter is installed inside the air supply chamber, a water guide pipe is connected to the bottom of the air supply chamber, the other end of the water guide pipe is connected to the sewage tank, and a valve is installed on the water guide pipe.

[0022] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0023] This dust suppression mechanism for lignin production and processing controls the input of aqueous solution from the wastewater tank into the dust suppression section via the liquid supply unit. The dust suppression section forms a water curtain zone and a water mist zone within the dust suppression chamber, thereby performing secondary dust suppression on the air entering the dust suppression chamber. This allows lignin dust to dissolve into the aqueous solution and be discharged into the dust suppression box, effectively completing the filtration and adsorption of dust in the air, thus preventing lignin dust from polluting the processing environment. Furthermore, the wastewater mixed with dust is filtered and reused by the filter box in the wastewater tank and can be transported back to the dust suppression section for use, effectively reducing water waste and improving the practicality of the dust suppression equipment.

[0024] This dust suppression mechanism for lignin production and processing, through its drive unit, allows for the alternating operation of both sides of the mesh water curtain plate while the dust suppression section cleans airborne dust. The plate is alternately rinsed by several spiral nozzles within the dust suppression section, effectively reducing the adhesion of lignin dust to the mesh water curtain plate. Simultaneously, the drive unit controls the intermittent rotation of the mesh water curtain plate, which in turn drives the intermittent opening of the drain pipe in the filtration section, cleaning accumulated lignin dust from the filter box and ensuring its filtration efficiency. This eliminates the need for frequent maintenance of the mesh water curtain plate and filter box, effectively reducing labor costs and facilitating the use of the dust suppression device. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 A perspective view of the present invention is shown;

[0027] Figure 2 A partial perspective view of the present invention is shown;

[0028] Figure 3 A partial cross-sectional perspective view of this utility model is shown;

[0029] Figure 4 A side view of the present invention is shown;

[0030] Figure 5 A partially enlarged view of this utility model is shown;

[0031] Figure 6 A partial cross-sectional view of the present invention is shown;

[0032] Figure 7 A partial cross-sectional perspective view of the present invention is shown.

[0033] In the picture

[0034] 1. Mobile frame; 2. Wastewater tank; 3. Dust settling box; 4. Dust settling chamber; 5. Water collection chamber; 6. Air supply chamber; 7. Negative pressure fan; 8. Dust settling section; 9. Liquid supply section; 10. Sludge filtration section; 11. Drive section; 12. Water guide frame; 13. Mesh water curtain plate; 14. Rotating shaft; 15. Water inlet pipe; 16. Flow equalization trough; 17. Water collection tank; 18. Spiral nozzle; 19. Filter box; 20. Sewage pipe; 21. Water collection trough 22. Sewage pipe; 23. Control rod; 24. Sealing cover; 25. Control rack; 26. Limit plate; 27. Return spring; 28. Drive motor; 29. ​​Transmission gear; 30. Transmission rack; 31. Gear teeth; 32. Water tank; 33. Inlet pipe; 34. Water pump; 35. Water delivery pipe; 36. Water level sensor; 37. Solenoid valve; 38. Baffle plate; 39. Wire mesh filter; 40. Water guide pipe. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0036] like Figure 1-7 As shown, a dust suppression mechanism for lignin production and processing includes: a movable frame 1, a wastewater tank 2 fixed to the top of the movable frame 1, a dust suppression box 3 fixed to the top of the wastewater tank 2, and a dust suppression chamber 4, a water collection chamber 5, and an air conveying chamber 6 disposed in the dust suppression box 3 and interconnected with each other.

[0037] Two negative pressure fans 7 are symmetrically assembled in the dust settling box 3 and are connected to the upper end of the air conveying chamber 6.

[0038] Dust collection section 8 is installed in the dust collection chamber 4;

[0039] Liquid supply unit 9 is installed on the sewage tank 2 and the dust settling tank 3, and the liquid supply unit 9 can deliver dust settling liquid to the dust settling unit 8;

[0040] A filtration section 10 is installed in the wastewater tank 2 and is used to collect and treat wastewater in the dust settling section 8.

[0041] Drive unit 11, which is mounted on the sewage tank 2 and the dust settling tank 3, and engages with the filter unit 10, wherein

[0042] The drive unit 11 is driven so that the dust settling unit 8 rotates while the filter unit 10 discharges wastewater.

[0043] In use, the wastewater tank 2 and dust settling tank 3 are moved to the vicinity of the lignin processing location by the mobile frame 1. The two negative pressure fans 7 are started to draw air from the dust settling tank 3, creating a negative pressure in the dust settling tank 3. This draws in air with lignin dust from the outside into the dust settling chamber 4. At this time, under the control of the liquid supply unit 9, the aqueous solution in the wastewater tank 2 is input into the dust settling unit 8. The dust settling unit 8 forms a water curtain area and a water mist area in the dust settling chamber 4, thereby performing secondary dust settling on the air entering the dust settling chamber 4. This allows the lignin dust to dissolve into the aqueous solution and be discharged into the dust settling tank 3, effectively completing the filtration and adsorption of dust in the air, thus preventing lignin dust from polluting the processing environment.

[0044] After dust settling, the air passes through the water collection chamber 5 and the air conveying chamber 6 and is discharged from the dust settling box 3. The wire mesh filter 39 and several baffles 38 installed in the water collection chamber 5 and the air conveying chamber 6 can effectively adsorb and clean the water vapor carried in the air, control the humidity of the air discharged from the dust settling box 3, and avoid affecting the normal production and processing of lignin.

[0045] After the lignin dust in the air is settled by the aqueous solution in the dust settling section 8, the mixture of aqueous solution and dust is discharged into the filter box 19 fixed in the sewage tank 2 through the water collection tank 21 and the sewage pipe 22 for filtration. The dust is collected and fixed in the filter box 19, while the aqueous solution remains in the sewage tank 2, which can be easily transported to the dust settling section 8 through the liquid supply section 9 for recycling, effectively reducing water waste. At the same time, under the control of the drive section 11, the mesh water curtain plate 13 in the dust settling section 8 will rotate 180 degrees every once in a while, thereby causing the two sides of the mesh water curtain plate 13 to rotate 180 degrees. The system operates alternately and is alternately rinsed by several spiral nozzles 18 in the dust suppression section 8, thereby effectively reducing the adhesion of lignin dust on the mesh water curtain plate 13. While the drive section 11 controls the mesh water curtain plate 13 to rotate intermittently, it can also drive the sealing cover 24 in the filter section 10 to open the drain pipe 20 intermittently, cleaning the lignin dust accumulated in the filter box 19 and ensuring the filtration effect of the filter box 19. As a result, the system does not require frequent maintenance of the mesh water curtain plate 13 and the filter box 19 by personnel, effectively reducing labor maintenance costs and facilitating the use of the dust suppression device.

[0046] Optionally, the dust suppression unit 8 includes a water guide frame 12 fixed in the dust suppression chamber 4 and dividing the dust suppression chamber 4, a mesh water curtain plate 13 installed in the water guide frame 12, a rotating shaft 14 symmetrically fixed at both ends of the mesh water curtain plate 13, a water inlet pipe 15 fixed at the top of the water guide frame 12, a plurality of flow equalization grooves 16 equally spaced on the water inlet pipe 15, a water collection tank 17 fixed in the dust suppression chamber 4 and placed on the rear side of the water guide frame 12, and a plurality of spiral nozzles 18 equally spaced at the bottom of the water collection tank 17.

[0047] The mesh water curtain plate 13 is rotatably connected to the water guide frame 12 via two rotating shafts 14. In use, water in the sewage tank 2 is supplied to the water inlet pipe 15 and the water collection tank 17 via the liquid supply section 9. With the cooperation of several equalizing channels 16, the water flow ensures that it covers the surface of the water guide frame 12 before flowing to the mesh water curtain plate 13, forming a water curtain. Then, when the two negative pressure fans 7 are working, the dust generated from lignin processing and crushing is simultaneously transported to the dust settling box 3 along with the air. Large dust particles carried by the air are intercepted by the water curtain and mixed with the aqueous solution, flowing into the sewage. Simultaneously, as the air undergoes initial dust settling, several spiral nozzles 18 on the water collection tank 17 operate, discharging the water from the water collection tank 17. The solution is evenly sprayed behind the water guide frame 12 to further reduce dust in the air drawn into the dust collection box 3. The mixture of water solution and dust also flows into the wastewater tank 2, thus effectively reducing dust in the air drawn into the dust collection box 3 and ensuring the dust reduction effect. At the same time, the water flow sprayed from several spiral nozzles 18 can rinse the mesh water curtain plate 13 to a certain extent and clean some of the lignin adhering to the mesh water curtain plate 13. When the mesh water curtain plate 13 is rotated at regular intervals by two rotating shafts 14, the mesh water curtain plate 13 can achieve an intermittent self-cleaning effect on both sides, effectively reducing the frequency of cleaning the mesh water curtain plate 13 by the staff, reducing manpower consumption, and making it convenient to use.

[0048] Optionally, the filtration section 10 includes a filter box 19 fixed inside the wastewater tank 2, a drain pipe 20 installed at the bottom of the wastewater tank 2 and connected to the filter box 19, and a water collection trough 21 opened at the bottom of the dust settling chamber 4, one end of which is connected to the water collection trough 21 and the other end of which extends to the wastewater pipe 22 inside the filter box 19. In use, the dust carried by the water flow in the dust settling section 8 is collected by the water collection trough 21 and then transported to the filter box 19 through the wastewater pipe 22. Under the filtration of the filter box 19, the dust is collected in the filter box 19, and the filtered water can be stored in the wastewater tank 2 for the use of the liquid supply section 9 for the dust settling section 8, effectively reducing the waste of water resources.

[0049] Optionally, the filtration unit 10 further includes a control rod 23 slidably installed inside the filter box 19 and penetrating the sewage tank 2 at its upper end; a sealing cover 24 fixed to the lower end of the control rod 23 for sealing the sewage pipe 20; a control rack 25 fixed to the top of the control rod; a limiting plate 26 fixed to the control rod 23; and a return spring 27 movably sleeved on the control rod 23 and fixedly connected at both ends to the upper surface of the limiting plate 26 and the inner wall of the sewage tank 2, respectively. In use, the drive unit 11 can engage and drive the control rack 25 to move upward, so that the return spring 27 is compressed under the control of the limiting plate 26, and then, driven by the control rod 23, the sealing cover 24 releases the seal on the sewage pipe 20, and the filter box 19... The filtered dust collected in the central part can be discharged through the sewage pipe 20. Near the sewage pipe 20, a local low-pressure zone is formed at the filter box 19. The water around the filter box 19 will flow towards the sewage pipe 20 under the pressure difference, thereby clearing the filter box 19 and improving the subsequent filtration effect of the filter box 19. This reduces the need for frequent cleaning of the filter box 19 by the staff, effectively improving the practicality of the equipment. When the control rack 25 is engaged and driven to rise for a certain period of time, the drive unit 11 disengages from the control rack 25. Then, under the elastic force of the return spring 27, the control limit plate 26 drives the control rod 23 to reset, so that the sealing cover 24 closes the sewage pipe 20 again, facilitating the continued filtration and reuse of sewage.

[0050] Optionally, the drive unit 11 includes a drive motor 28 mounted outside the dust collection box 3, fixedly connected to one of the rotating shafts 14, two transmission gears 29 rotatably mounted outside the sewage tank 2, a transmission rack 30 meshing with the two transmission gears 29, and a gear tooth 31 meshing with one of the transmission gears 29 and the control rack 25.

[0051] The output end of the drive motor 28 is fixedly connected to one of the rotating shafts 14. In use, the drive motor 28 is controlled to work, and the drive motor 28 can control the rotating shaft 14 to rotate the mesh water curtain plate 13 by 180 degrees. During the rotation of the rotating shaft 14, one of the transmission gears 29 is controlled to rotate, and under the meshing transmission of the toothed belt, the other transmission gear 29 is controlled to drive the gear 31 to rotate, which in turn meshes with the control rack 25 in the filter part 10 to rise. Since the arrangement of the teeth in the gear 31 is intermittent, and two teeth in the gear 31 are mirror images and each occupies one-quarter of the outer ring of the gear 31, when the gear 31 rotates 90 degrees, the control rack 25 will disengage from the gear 31, so that the control rack 25 can move down and reset under the drive of the control rod 23. When the gear 31 rotates 180 degrees, the gear 31 re-engages with the control rack 25, so that the control rack 25 can re-engage with the gear 31 when the gear 31 rotates in the future.

[0052] Optionally, the liquid supply unit 9 includes a water tank 32 fixed on the top of the dust settling unit 8, an inlet pipe 33 for connecting the water tank 32 and the sewage tank 2, a water pump 34 installed outside the sewage tank 2, a water delivery pipe 35 with one end connected to the outlet of the water pump 34 and the other end connected to the water collection tank 17 and the water inlet pipe 15, a water level sensor 36 installed inside the sewage tank 2, and a solenoid valve 37 installed on the inlet pipe 33.

[0053] The water inlet pipe 33 of the water pump 34 is connected to the sewage tank 2 through a pipe;

[0054] The water level sensor 36 and the solenoid valve 37 are electrically connected to the external controller. When water in the sewage tank 2 is discharged by the filter section 10 and the water level drops to the water level sensor 36, the water level sensor 36 transmits an electrical signal to the external controller. The external controller can then control the solenoid valve 37 to open the water supply pipe 35, so that clean water in the water storage tank 32 can flow into the sewage tank 2 for replenishment. The solenoid valve 37 automatically closes after a set opening time. When the dust suppression section 8 is working, the water pump 34 is started, and the aqueous solution in the sewage tank 2 is drawn through the pipeline and then transported to the water collection tank 17 and the water inlet pipe 15 by the water supply pipe 35 for use by the dust suppression section 8.

[0055] Optionally, a plurality of baffles 38 are fixedly connected inside the water collection chamber 5, and a wire mesh filter 39 is installed inside the air supply chamber 6. A water guide pipe 40 is connected to the bottom of the air supply chamber 6, and the other end of the water guide pipe 40 is connected to the wastewater tank 2. A valve is installed on the water guide pipe 40. When the air that has been dusted by the dust removal unit 8 passes through the water collection chamber 5 and the air supply chamber 6, it will pass through the plurality of baffles 38 and the wire mesh filter 39 in sequence, thereby effectively adsorbing and capturing water droplets in the air, thereby effectively reducing the humidity of the air discharged after dust removal and filtration, and reducing the impact on lignin production and processing; and after the wire mesh filter 39 and the plurality of baffles 38 capture the water droplets, they will collect and drip into the bottom of the air supply chamber 6 and the water collection chamber 5 for storage. By controlling the valve to open the water guide pipe 40, the stored water can be introduced into the wastewater tank 2 for use, effectively reducing water waste.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust-reducing mechanism for lignin production and processing, characterized in that, include: A mobile frame (1), a sewage tank (2) fixed on the top of the mobile frame (1), a dust settling box (3) fixed on the top of the sewage tank (2), and a dust settling chamber (4), a water collection chamber (5) and an air conveying chamber (6) arranged in the dust settling box (3) and connected to each other. Negative pressure fans (7), two negative pressure fans (7) are symmetrically assembled in the dust settling box (3) and are connected to the upper end of the air conveying chamber (6); A dust-collecting section (8) is installed in the dust-collecting chamber (4); Liquid supply unit (9) is installed on the sewage tank (2) and the dust settling tank (3), and the liquid supply unit (9) can deliver dust settling liquid to the dust settling unit (8); A filtration section (10) is installed in the wastewater tank (2) and is used to collect and treat wastewater in the dust settling section (8); A drive unit (11) is mounted on the wastewater tank (2) and the dust settling tank (3), and the drive unit (11) engages with the filter unit (10), wherein... The drive unit (11) is driven to rotate the dust settling unit (8), while the filter unit (10) discharges wastewater.

2. The dust suppression mechanism for lignin production and processing as described in claim 1, characterized in that, The dust suppression unit (8) includes a water guide frame (12) fixed in the dust suppression chamber (4) and dividing the dust suppression chamber (4), a mesh water curtain plate (13) installed in the water guide frame (12), a rotating shaft (14) symmetrically fixed at both ends of the mesh water curtain plate (13), a water inlet pipe (15) fixed at the top of the water guide frame (12), several flow equalization grooves (16) opened at equal intervals on the water inlet pipe (15), a water collection tank (17) fixed in the dust suppression chamber (4) and placed on the rear side of the water guide frame (12), and several spiral nozzles (18) installed at equal intervals at the bottom of the water collection tank (17). The mesh water curtain plate (13) is rotatably connected to the water guide frame (12) via two rotating shafts (14).

3. The dust suppression mechanism for lignin production and processing as described in claim 2, characterized in that, The filtration section (10) includes a filter box (19) fixed inside the sewage tank (2), a drain pipe (20) installed at the bottom of the sewage tank (2) and connected to the filter box (19), and a water collection trough (21) opened at the bottom of the dust settling chamber (4), one end of which is connected to the water collection trough (21) and the other end of which extends to the sewage pipe (22) inside the filter box (19).

4. The dust suppression mechanism for lignin production and processing as described in claim 3, characterized in that, The filter section (10) also includes a control rod (23) that is slidably installed inside the filter box (19) and has its upper end penetrating through the sewage tank (2), a sealing cover (24) fixed to the lower end of the control rod (23) and used to close the sewage pipe (20), a control rack (25) fixed to the top of the control, a limiting plate (26) fixed to the control rod (23), and a reset spring (27) that is movably sleeved on the control rod (23) and whose two ends are respectively fixedly connected to the upper surface of the limiting plate (26) and the inner wall of the sewage tank (2).

5. A dust-reducing mechanism for lignin production and processing as described in claim 4, characterized in that, The drive unit (11) includes a drive motor (28) installed outside the dust collection box (3), fixedly connected to one of the rotating shafts (14), two transmission gears (29) rotatably installed outside the sewage tank (2), a transmission rack (30) meshing with the two transmission gears (29), and a gear tooth (31) meshing with one of the transmission gears (29) and the control rack (25). The output end of the drive motor (28) is fixedly connected to one of the rotating shafts (14).

6. A dust-reducing mechanism for lignin production and processing as described in claim 2, characterized in that, The liquid supply unit (9) includes a water tank (32) fixed on the top of the dust settling unit (8), an inlet pipe (33) for connecting the water tank (32) and the sewage tank (2), a water pump (34) installed outside the sewage tank (2), a water delivery pipe (35) with one end connected to the outlet of the water pump (34) and the other end connected to the water collection tank (17) and the water inlet pipe (15), a water level sensor (36) installed inside the sewage tank (2), and a solenoid valve (37) installed on the inlet pipe (33). The water inlet pipe (33) of the water pump (34) is connected to the sewage tank (2) through a pipeline; The water level sensor (36) and the solenoid valve (37) are electrically connected to the peripheral controller.

7. A dust-reducing mechanism for lignin production and processing as described in claim 6, characterized in that, Several baffles (38) are fixedly connected inside the water collection chamber (5). A wire mesh filter (39) is installed inside the air supply chamber (6). A water guide pipe (40) is connected to the bottom of the air supply chamber (6). The other end of the water guide pipe (40) is connected to the sewage tank (2). A valve is installed on the water guide pipe (40).

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