Leather production waste gas treatment equipment

Abstract

This invention discloses a waste gas treatment device for leather production, belonging to the field of waste gas treatment. It includes a housing with an air inlet on its side surface and an exhaust outlet at its upper end. A cloth bag is disposed inside the housing. A cleaning mechanism is provided on the side wall of the cloth bag for cleaning oil stains from its surface. The cleaning mechanism includes a first gear, a first reciprocating screw, and a first brush head. A support plate is fixedly connected to the inner wall of the housing near its lower end. The cloth bag is rotatably connected to the upper surface of the support plate, and the first gear is rotatably connected to the upper surface of the support plate. The device allows for intermittent spraying of cleaning agent by the first and second brush heads as they move up and down. The cleaning agent decomposes the oil stains, and combined with the cleaning action of the brush bristles, easily removes oily dust from the surface of the cloth bag, preventing clogging on the side wall and ensuring the filtration effect of the cloth bag.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment, and more specifically, to a waste gas treatment device for leather production. Background Technology

[0002] Waste gas refers to toxic and harmful gases emitted during human production and daily life. The leather manufacturing industry, in particular, generates large amounts of mixed waste gas containing leather dust, volatile organic compounds (VOCs), grease, and resin adhesives during its processing steps such as kneading, coating, fatliquoring, and polishing. This type of waste gas not only has a strong odor but also a complex composition, severely polluting the environment and affecting human health. Current waste gas treatment technologies require a complex process, typically involving cooling the waste gas, removing toxicity, removing dust, and finally releasing it into the air.

[0003] When removing dust from leather exhaust fumes, baghouse dust collectors are generally used. However, because leather exhaust fumes contain a large amount of highly viscous oily dust and resinous components, these high-viscosity dust particles easily adhere to the surface of the bag during filtration, resulting in severe "bag clogging" and preventing the bag from breathing, thus hindering its filtration function.

[0004] To address the problem of filter bag clogging, existing dust collection equipment typically employs reverse air blowing or simple mechanical scraping (such as dry brush cleaning) to prevent blockage. However, when dealing with highly viscous, oily dust from leather production, reverse air blowing alone is insufficient to remove the tightly adhered oily dust. Conventional dry brush cleaning not only fails to thoroughly remove the adhering material but also causes the oily dust to spread over large areas and stick firmly to the brush bristles, quickly rendering the brush ineffective and losing its cleaning ability. This not only fails to effectively clean the filter bags but also necessitates frequent machine shutdowns and manual bag removal for cleaning, significantly increasing the workload for workers. Furthermore, the removal of the filter bags disrupts the continuous operation of the exhaust gas treatment equipment.

[0005] In view of this, and in response to the above-mentioned shortcomings, the present invention has improved and optimized the existing waste gas treatment equipment, and developed a waste gas treatment equipment for leather production. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a leather production waste gas treatment device, which can realize the intermittent spraying of cleaning agent when the first brush head and the second brush head move up and down. The cleaning agent decomposes the oil stains and, together with the cleaning of the brush bristles, can easily clean the oily dust on the surface of the bag tube, which can avoid the problem of bag sticking to the side wall of the bag tube, thereby ensuring the filtration effect of the bag tube.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A leather production waste gas treatment device includes a shell, an air inlet on the side surface of the shell, an exhaust outlet at the upper end of the shell, and a cloth bag tube inside the shell. The side wall of the bag tube is provided with a cleaning mechanism, which is used to clean the oil stains on the surface of the bag tube; The cleaning mechanism includes a first gear, a first reciprocating lead screw, and a first brush head; A support plate is fixedly connected to the inner wall of the housing near the lower end. The bag tube is rotatably connected to the upper surface of the support plate. A first gear is rotatably connected to the upper surface of the support plate. The side of the first gear meshes with the outer wall of the bag tube. A first reciprocating screw is fixedly connected to the upper end of the first gear. A first brush head is threadedly connected to the side surface of the first reciprocating screw. The bristles of the first brush head are in contact with the outer wall of the bag tube. Multiple sets of drain ports are opened on the side wall of the first brush head at the bristles. The inside of the first brush head is filled with cleaning fluid. The bag tube is equipped with a drive mechanism inside, which is used to drive the first gear to rotate.

[0009] Furthermore, the drive mechanism includes a windshield, planetary gears, a sun gear, a rotating shaft, and fan blades; A sun gear is rotatably connected to the center of the upper surface of the support plate. A planet gear is meshed with the side of the sun gear. The planet gear is rotatably connected to the upper surface of the support plate through a support column. The side of the planet gear is meshed with the inner wall of the bag tube. A rotating shaft is fixedly connected to the upper end of the planet gear. The upper end of the rotating shaft passes through the bag tube and is fixedly connected to a fan blade. A windproof cover is provided on the side of the bag tube. The windproof cover is fixedly connected to the inner wall of the shell.

[0010] Furthermore, the cleaning mechanism also includes a water storage tank, a first liquid guide pipe, a water pump, and a second liquid guide pipe; A water storage tank is installed at the bottom of the housing, and a water pump is installed on the side wall of the water storage tank. A first liquid guide pipe is installed at the water inlet of the water pump, and the end of the first liquid guide pipe away from the water pump is connected to the interior of the water storage tank. A second liquid guide pipe is installed at the water outlet of the water pump, and the end of the second liquid guide pipe away from the water pump is connected to the interior of the first brush head.

[0011] Furthermore, a second gear is rotatably connected to the upper surface of the support plate near the first gear, and a second reciprocating screw is fixedly connected to the upper end face of the second gear. A second brush head is threadedly connected to the side surface of the second reciprocating screw. The internal structure of the second brush head is the same as that of the first brush head. The initial position of the first brush head is located near the lower end of the side surface of the first reciprocating screw, and the initial position of the second brush head is located near the upper end of the side surface of the second reciprocating screw.

[0012] Furthermore, a storage tank is fixedly connected to the side surface of the housing corresponding to the position of the first reciprocating screw. The interior of the storage tank is in communication with the interior of the housing. A partition plate is fixedly connected to the inner wall of the storage tank, and the second liquid guide tube is located on the left and right sides of the partition plate.

[0013] Furthermore, a water baffle is fixedly connected to the inner wall of the second brush head. Multiple sets of water inlets are opened through the side wall of the water baffle. A movable plate is provided on the side surface of the water baffle. Multiple sets of drain outlets are opened through the side wall of the movable plate. A spring is fixedly connected to the side of the movable plate. The end of the spring away from the movable plate is fixedly connected to the inner wall of the second brush head. A connecting shaft is fixedly connected to the end of the movable plate away from the spring. The end of the connecting shaft away from the movable plate passes through the side wall of the second brush head and is fixedly connected to a top block. The side of the top block has an arc-shaped structure design. Multiple sets of arc-shaped protrusions are fixedly connected to the left and right sides of the partition plate. When the first brush head and the second brush head move up and down, the corresponding top blocks will touch the arc-shaped protrusions.

[0014] Furthermore, multiple sets of heating wire columns are fixedly connected to the upper surface of the support plate.

[0015] Furthermore, the support plate has two sets of water-permeable holes through it near the second gear, and a filter screen is fixedly connected to the inner wall of the water storage tank near the lower end. The first liquid guide pipe is installed below the filter screen.

[0016] Furthermore, a drain pipe is installed on the side surface of the water storage tank above the filter screen. The filter screen is inclined and tilted towards the drain pipe. An injection pipe is installed on the side surface of the water storage tank above the drain pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) When the bag cylinder rotates, the side wall with oil and dust will rotate out from the inside of the windshield, while the side wall without dust and oil will enter the inside of the windshield. This can prevent the side wall of the bag cylinder inside the windshield from getting blocked in time, thus ensuring the filtration effect of the bag cylinder.

[0018] (2) This solution drives the first brush head and the second brush head to move up and down by rotating the cloth bag tube. When the first brush head and the second brush head move up and down, they will spray cleaning agent intermittently. The cleaning agent decomposes the oil stains and, together with the cleaning of the brush bristles, can easily clean the oily dust on the surface of the cloth bag tube, which can avoid the problem of the cloth bag tube becoming clogged on the side wall, thus ensuring the filtration effect of the cloth bag tube.

[0019] (3) This solution heats the filtered exhaust gas. When the gas is discharged, it passes through a wet cloth bag and is heated to ensure that the dry sidewall of the cloth bag can perform filtering work well after entering the windshield.

[0020] (4) This solution utilizes the fact that some of the cleaning agent will flow down the cloth bag tube. By recycling this cleaning agent and filtering it again, the use of cleaning agent can be saved and the cost of cleaning agent can be reduced. Attached Figure Description

[0021] Figure 1 This is an overall appearance view of the present invention; Figure 2 This is an overall side view of the present invention; Figure 3 This is an overall internal cross-sectional view of the present invention; Figure 4 This is a cross-sectional view of the upper half of the housing of the present invention; Figure 5 This is a half-sectional view of the interior of the housing of the present invention; Figure 6 This is a bottom view of the bag tube of the present invention; Figure 7 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 8 This is a diagram showing the interior of the storage tank of the present invention; Figure 9 This is a diagram showing the interior of the second brush head of the present invention; Figure 10 This is a side view of the second brush head of the present invention; Figure 11 A diagram showing the location of the water-permeable holes in this invention is provided.

[0022] Explanation of the labels in the diagram: 1. Housing; 2. Air inlet; 3. Exhaust outlet; 4. Water tank; 5. Injection pipe; 6. First liquid guide pipe; 7. Water pump; 8. Storage tank; 9. Support plate; 10. Bag tube; 11. Wind shield; 12. Sun gear; 13. Planetary gear; 14. Shaft; 15. First gear; 16. First reciprocating screw; 17. Second gear; 18. Second reciprocating screw; 19. Second liquid guide pipe; 20. Fan blade; 21. Heating wire column; 22. Divider plate; 23. Arc-shaped protrusion; 24. Top block; 25. Connecting shaft; 26. Drain outlet; 27. Water inlet; 28. Moving plate; 29. ​​Water baffle plate; 30. Drain outlet; 31. Spring; 32. Water inlet hole; 33. Filter screen; 34. Sewage pipe; 35. First brush head; 36. Second brush head. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 7 A leather production waste gas treatment device includes a shell 1, an air inlet 2 on the side surface of the shell 1, an exhaust outlet 3 at the upper end of the shell 1, and a cloth bag tube 10 inside the shell 1. The side wall of the bag cylinder 10 is provided with a cleaning mechanism, which is used to clean the oil stains on the surface of the bag cylinder 10. The cleaning mechanism includes a first gear 15, a first reciprocating screw 16, and a first brush head 35; A support plate 9 is fixedly connected to the inner wall of the housing 1 near the lower end. The bag tube 10 is rotatably connected to the upper surface of the support plate 9. A first gear 15 is rotatably connected to the upper surface of the support plate 9. The side of the first gear 15 meshes with the outer wall of the bag tube 10. A first reciprocating screw 16 is fixedly connected to the upper end of the first gear 15. A first brush head 35 is threadedly connected to the side surface of the first reciprocating screw 16. The bristles of the first brush head 35 are in contact with the outer wall of the bag tube 10. Multiple sets of drain ports 26 are opened on the side wall of the first brush head 35 at the bristles. The inside of the first brush head 35 is filled with cleaning fluid. The bag tube 10 is equipped with a drive mechanism inside, which is used to drive the first gear 15 to rotate.

[0025] like Figures 3 to 7 As shown, the drive mechanism includes a windshield 11, a sun gear 12, planet gears 13, a rotating shaft 14, and fan blades 20; A sun gear 12 is rotatably connected to the center of the upper surface of the support plate 9. A planet gear 13 is meshed with the side of the sun gear 12. The planet gear 13 is rotatably connected to the upper surface of the support plate 9 through a support column. The side of the planet gear 13 is meshed with the inner wall of the bag cylinder 10. A rotating shaft 14 is fixedly connected to the upper end of the planet gear 13. The upper end of the rotating shaft 14 passes through the bag cylinder 10 and is fixedly connected with a fan blade 20. A wind shield 11 is provided on the side of the bag cylinder 10. The wind shield 11 is fixedly connected to the inner wall of the housing 1.

[0026] like Figures 2 to 7 As shown, the cleaning mechanism also includes a water storage tank 4, a first liquid guide pipe 6, a water pump 7, and a second liquid guide pipe 19; A water storage tank 4 is installed at the bottom of the housing 1. A water pump 7 is installed on the side wall of the water storage tank 4. A first liquid guide pipe 6 is installed at the water inlet of the water pump 7. The end of the first liquid guide pipe 6 away from the water pump 7 is connected to the interior of the water storage tank 4. A second liquid guide pipe 19 is installed at the water outlet of the water pump 7. The end of the second liquid guide pipe 19 away from the water pump 7 is connected to the interior of the first brush head 35.

[0027] When treating exhaust gas from leather production, the exhaust gas generated during leather processing is first introduced into the air inlet 2. The exhaust gas enters the interior of the housing 1, then passes through the side wall of the bag cylinder 10 (not covered by the wind deflector 11) and enters the interior of the bag cylinder 10. Simply put, only half of the side wall of the bag cylinder 10 is used to filter the exhaust gas. Oily dust in the exhaust gas is filtered onto the side surface of the bag cylinder 10. The filtered exhaust gas then passes through the side wall of the bag cylinder 10 covered by the wind deflector 11, flows upward along the inner wall of the housing 1, and finally exits from the exhaust port 3. As the filtered exhaust gas rises, it drives the fan blades 20 to rotate. To overcome the mechanical resistance of subsequent mechanisms, the sun gear 12, planet gears 13, and the gear ring on the inner wall of the bag cylinder 10 form a high-reduction-ratio planetary transmission system with reduced torque. When the fan blade 20 rotates, it drives the shaft 14 to rotate at a high speed and low torque. When the shaft 14 rotates, it drives the sun gear 12 at the lower end to rotate. After the reduction and amplification effect of the planetary gear system, it is converted into a driving force with low speed and high torque, thereby stably driving the bag cylinder 10 and the external cleaning mechanism. When the sun gear 12 rotates, it drives the planet gear 13 to rotate. When the planet gear 13 rotates, it drives the meshed bag cylinder 10 to rotate. When the bag cylinder 10 rotates, the side wall with oil and dust will rotate out from the inside of the windshield 11 and pass through the first brush head 35, while the side wall without dust and oil will enter the inside of the windshield 11. This can timely avoid the problem of blockage of the side wall of the bag cylinder 10 inside the windshield 11, thus ensuring the filtration effect of the bag cylinder 10.

[0028] When the bag cylinder 10 rotates, it drives the meshing first gear 15 to rotate. The rotation of the first gear 15 drives the first reciprocating screw 16 to rotate. When the first reciprocating screw 16 rotates, it drives the first brush head 35 to move up and down along the first reciprocating screw 16. When the first brush head 35 moves up and down, the bristles continuously clean the oil and dust on the side wall of the bag cylinder 10. When the first brush head 35 moves up and down, the water pump 7 draws the cleaning agent in the water storage tank 4 through the first liquid guide pipe 6. It should be noted that the water storage tank 4 is pre-filled with an appropriate amount of cleaning agent. For the grease and resin adhesives contained in the exhaust gas of leather production, the cleaning agent can be a weak alkaline cleaning agent or an oil-removing liquid with added surfactants. The cleaning agent is mainly used to decompose the oil and resin components of leather. The extracted cleaning agent enters the interior of the first brush head 35 through the second liquid guide tube 19 and is finally discharged from the drain port 26 on the first brush head 35. When the brush bristles clean the side wall of the bag cylinder 10, cleaning agent is continuously sprayed onto the surface of the bag cylinder 10. The cleaning agent decomposes the leather oil stains, and with the cleaning of the brush bristles, it is easy to clean the oily dust on the surface of the bag cylinder 10, which can prevent the bag cylinder 10 from becoming clogged on the side wall, thus ensuring the filtration effect of the bag cylinder 10.

[0029] like Figures 6 to 7 As shown, a second gear 17 is rotatably connected to the upper surface of the support plate 9 near the position of the first gear 15. A second reciprocating screw 18 is fixedly connected to the upper end face of the second gear 17. A second brush head 36 is threadedly connected to the side surface of the second reciprocating screw 18. The internal structure of the second brush head 36 is the same as that of the first brush head 35. The initial position of the first brush head 35 is located near the lower end of the side surface of the first reciprocating screw 16, and the initial position of the second brush head 36 is located near the upper end of the side surface of the second reciprocating screw 18.

[0030] When the bag tube 10 rotates, it also drives the second gear 17 to rotate. The rotation of the second gear 17 drives the second reciprocating screw 18 to rotate, which in turn drives the second brush head 36 to move up and down. Because the internal structure of the second brush head 36 is the same as that of the first brush head 35, both brush heads simultaneously clean the side surface of the bag tube 10. Furthermore, since the initial position of the first brush head 35 is near the lower end of the side surface of the first reciprocating screw 16, and the initial position of the second brush head 36 is near the upper end of the side surface of the second reciprocating screw 18, the first brush head 35 moves upwards... When the first brush head 35 moves downward, the second brush head 36 will clean downward. When the first brush head 35 moves downward, the second brush head 36 will clean upward. The side wall of the bag cylinder 10 is cleaned by the reverse movement of the first brush head 35 and the second brush head 36, thereby improving the cleaning effect on the side wall of the bag cylinder 10. It should be noted that when the first reciprocating screw 16 and the second reciprocating screw 18 drive the corresponding first brush head 35 and second brush head 36 to move up and down, the inner wall of the housing 1 is fixedly provided with a vertical guide rail (not shown in the figure) corresponding to the movement trajectory of the first brush head 35 and the second brush head 36. The side walls of the first brush head 35 and the second brush head 36 are provided with guide sliders that slide in cooperation with the vertical guide rails. Guided and limited by the vertical guide rail, the first brush head 35 and the second brush head 36 will not rotate with the corresponding first reciprocating screw 16 and second reciprocating screw 18, and the brush head will not be excessively worn on the outer wall of the bag cylinder 10 due to lateral torque. They will only be driven up and down by the first reciprocating screw 16 and the second reciprocating screw 18.

[0031] like Figure 2 and Figure 8 As shown, a storage tank 8 is fixedly connected to the side surface of the housing 1 at the position corresponding to the first reciprocating screw 16. The interior of the storage tank 8 is connected to the interior of the housing 1. A partition plate 22 is fixedly connected to the inner wall of the storage tank 8. The second liquid guide tube 19 is located on the left and right sides of the partition plate 22.

[0032] The main purpose of the storage tank 8 is to provide space for the second liquid guide tube 19 to move. The partition plate 22 separates the second liquid guide tubes 19 corresponding to the first brush head 35 and the second brush head 36. In this way, when the first brush head 35 and the second brush head 36 move up and down, the second liquid guide tubes 19 of the two will not come into contact with each other, thus avoiding the problem of the second liquid guide tubes 19 of the two becoming entangled.

[0033] like Figures 7 to 10As shown, a baffle plate 29 is fixedly connected to the inner wall of the second brush head 36. Multiple sets of water inlets 27 are opened through the side wall of the baffle plate 29. A movable plate 28 is provided on the side surface of the baffle plate 29. Multiple sets of drain outlets 30 are opened through the side wall of the movable plate 28. A spring piece 31 is fixedly connected to the side of the movable plate 28. The end of the spring piece 31 away from the movable plate 28 is fixedly connected to the inner wall of the second brush head 36. A connecting shaft 25 is fixedly connected to the end of the movable plate 28 away from the spring piece 31. The end of the connecting shaft 25 away from the movable plate 28 passes through the side wall of the second brush head 36 and is fixedly connected to a top block 24. The side of the top block 24 has an arc-shaped structure design. Multiple sets of arc-shaped protrusions 23 are fixedly connected to the left and right sides of the partition plate 22. When the first brush head 35 and the second brush head 36 move up and down, the corresponding top block 24 will touch the arc-shaped protrusions 23.

[0034] When the first brush head 35 and the second brush head 36 move up and down, the corresponding top block 24 will intermittently hit the arc-shaped protrusion 23. When hitting the arc-shaped protrusion 23, the top block 24 will move closer to the side wall of the corresponding first brush head 35 and second brush head 36. The top block 24 will drive the connecting shaft 25 to move synchronously. When the connecting shaft 25 moves, it will drive the moving plate 28 to squeeze the spring 31. In order to ensure the precise opening and closing of the hole, the maximum horizontal displacement of the top block 24 squeezed by the arc-shaped protrusion 23 is equal to the center distance between the adjacent water inlet 27 and the drain outlet 30 in the initial misaligned state. When the movable plate 28 moves by this horizontal displacement, the drain outlet 30 and the water inlet 27 will precisely align with each other. When they align, the cleaning agent will flow out from the water inlet 27 and finally be discharged from the drain outlet 26. When the top block 24 is no longer squeezed by the arc protrusion 23, the spring piece 31 will push the movable plate 28 to move in the opposite direction. Finally, the drain outlet 30 and the water inlet 27 will be staggered, thereby closing the water inlet 27. At this time, no more cleaning agent will be discharged from the drain outlet 26. This means that the cleaning agent is discharged intermittently when the first brush head 35 and the second brush head 36 are cleaning, which can avoid the problem of excessive use of cleaning agent and save cleaning agent.

[0035] like Figure 3 and Figure 6 As shown, multiple sets of heating wire columns 21 are fixedly connected to the upper surface of the support plate 9.

[0036] After being cleaned by the first brush head 35 and the second brush head 36, the surface of the bag cylinder 10 is wet. The inside of the bag cylinder 10 contains filtered exhaust gas. This filtered exhaust gas is heated by the heating wire column 21. The heated gas passes through the wet side wall of the bag cylinder 10, and this hot airflow dries the side wall of the bag cylinder 10. As the wet side wall of the bag cylinder 10 moves from the first brush head 35 and the second brush head 36 into the windshield 11, it is continuously heated by the hot airflow, thus ensuring that the wet side wall of the bag cylinder 10 is completely dried. This ensures that the side wall of the bag cylinder 10 can perform filtering work well after entering the windshield 11.

[0037] like Figure 2 , Figure 3 , Figure 11 As shown, the support plate 9 has two sets of water-permeable holes 32 through it near the second gear 17. The inner wall of the water storage tank 4 is fixedly connected to a filter screen 33 near the lower end. The first liquid guide pipe 6 is installed below the filter screen 33.

[0038] When the first brush head 35 and the second brush head 36 clean the side wall of the bag cylinder 10, some of the cleaning agent will flow downwards along the bag cylinder 10. To prevent the cleaning agent from accumulating on the upper surface of the support plate 9 and penetrating into the central gear transmission area, the upper surface of the support plate 9 is provided with a downward sloping water collection slope with the water permeable hole 32 as the lowest point. The cleaning agent falling along the bag cylinder 10 is guided by the water collection slope and finally flows into the water permeable hole 32 and enters the water storage tank 4 to realize the recovery of the cleaning agent. Because the cleaning agent still has a certain cleaning effect after use, the recovered cleaning agent contains dust and oil. After entering the water storage tank 4, the oil will float on the top of the cleaning agent, and the dust particles will settle in the cleaning agent and finally settle on the filter screen 33. The first liquid guide pipe 6 draws the cleaning agent from below the filter screen 33, which ensures that clean cleaning agent is drawn and avoids the problem of blockage inside the water pump 7, the first brush head 35, and the second brush head 36.

[0039] like Figures 2 to 3 As shown, a drain pipe 34 is installed on the side surface of the water storage tank 4 above the filter screen 33. The filter screen 33 is inclined and tilted towards the drain pipe 34. An injection pipe 5 is installed on the side surface of the water storage tank 4 above the drain pipe 34.

[0040] When the cleaning agent loses its effectiveness and needs to be discharged, the drain pipe 34 can be opened. The oil and settled dust will be discharged from the drain pipe 34 along the slope of the filter screen 33. Then, the drain pipe 34 is closed. At this time, the cleaning agent is injected into the water storage tank 4 through the injection pipe 5. After the injection is completed, the opening of the injection pipe 5 is closed. It should be noted that when the cleaning agent is discharged, the amount of cleaning agent remaining below the filter screen 33 is small. When it mixes with the new cleaning agent, it will not affect the new cleaning agent's ability to decompose oil.

[0041] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A leather production waste gas treatment device, comprising a housing (1), an air inlet (2) is provided on the side surface of the housing (1), an exhaust outlet (3) is provided at the upper end of the housing (1), and a cloth bag tube (10) is provided inside the housing (1). Its features are: The side wall of the bag tube (10) is provided with a cleaning mechanism, which is used to clean the oil stains on the surface of the bag tube (10); The cleaning mechanism includes a first gear (15), a first reciprocating screw (16), and a first brush head (35). A support plate (9) is fixedly connected to the inner wall of the housing (1) near the lower end. The bag tube (10) is rotatably connected to the upper surface of the support plate (9). A first gear (15) is rotatably connected to the upper surface of the support plate (9). The side of the first gear (15) meshes with the outer wall of the bag tube (10). A first reciprocating screw (16) is fixedly connected to the upper end of the first gear (15). A first brush head (35) is threadedly connected to the side surface of the first reciprocating screw (16). The bristles of the first brush head (35) are in contact with the outer wall of the bag tube (10). Multiple sets of drain ports (26) are opened on the side wall of the first brush head (35) at the bristles. The first brush head (35) is filled with cleaning liquid. The bag tube (10) is equipped with a drive mechanism inside, which is used to drive the first gear (15) to rotate.

2. The leather production waste gas treatment equipment according to claim 1, characterized in that: The drive mechanism includes a windshield (11), a sun gear (12), planet gears (13), a rotating shaft (14), and fan blades (20). A sun gear (12) is rotatably connected to the center of the upper surface of the support plate (9). A planet gear (13) is meshed with the side of the sun gear (12). The planet gear (13) is rotatably connected to the upper surface of the support plate (9) through a support column. The side of the planet gear (13) is meshed with the inner wall of the bag tube (10). A rotating shaft (14) is fixedly connected to the upper end of the planet gear (13). The upper end of the rotating shaft (14) passes through the bag tube (10) and is fixedly connected with a fan blade (20). A windproof cover (11) is provided on the side of the bag tube (10). The windproof cover (11) is fixedly connected to the inner wall of the shell (1).

3. The leather production waste gas treatment equipment according to claim 1, characterized in that: The cleaning mechanism also includes a water tank (4), a first liquid guide pipe (6), a water pump (7), and a second liquid guide pipe (19). A water storage tank (4) is installed at the bottom of the housing (1). A water pump (7) is installed on the side wall of the water storage tank (4). A first liquid guide pipe (6) is installed at the water inlet of the water pump (7). The end of the first liquid guide pipe (6) away from the water pump (7) is connected to the interior of the water storage tank (4). A second liquid guide pipe (19) is installed at the water outlet of the water pump (7). The end of the second liquid guide pipe (19) away from the water pump (7) is connected to the interior of the first brush head (35).

4. The leather production waste gas treatment equipment according to claim 3, characterized in that: The upper surface of the support plate (9) is rotatably connected to the second gear (17) near the first gear (15). The upper end face of the second gear (17) is fixedly connected to the second reciprocating screw (18). The side surface of the second reciprocating screw (18) is threadedly connected to the second brush head (36). The internal structure of the second brush head (36) is the same as that of the first brush head (35). The initial position of the first brush head (35) is located on the side surface of the first reciprocating screw (16) near the lower end. The initial position of the second brush head (36) is located on the side surface of the second reciprocating screw (18) near the upper end.

5. The leather production waste gas treatment equipment according to claim 4, characterized in that: A storage tank (8) is fixedly connected to the side surface of the housing (1) at the position corresponding to the first reciprocating screw (16). The interior of the storage tank (8) is connected to the interior of the housing (1). A partition plate (22) is fixedly connected to the inner wall of the storage tank (8). The second liquid guide pipe (19) is located on the left and right sides of the partition plate (22).

6. The leather production waste gas treatment equipment according to claim 5, characterized in that: The inner wall of the second brush head (36) is fixedly connected with a baffle plate (29). Multiple sets of water inlets (27) are opened through the side wall of the baffle plate (29). A movable plate (28) is provided on the side surface of the baffle plate (29). Multiple sets of drain outlets (30) are opened through the side wall of the movable plate (28). A spring piece (31) is fixedly connected to the side of the movable plate (28). The end of the spring piece (31) away from the movable plate (28) is fixedly connected to the inner wall of the second brush head (36). (28) A connecting shaft (25) is fixedly connected to one end away from the spring (31). The end of the connecting shaft (25) away from the moving plate (28) passes through the side wall of the second brush head (36) and is fixedly connected to a top block (24). The side of the top block (24) is designed with an arc shape. Multiple sets of arc protrusions (23) are fixedly connected to the left and right sides of the partition plate (22). When the first brush head (35) and the second brush head (36) move up and down, the corresponding top block (24) will touch the arc protrusion (23).

7. The leather production waste gas treatment equipment according to claim 4, characterized in that: Multiple sets of heating wire columns (21) are fixedly connected to the upper surface of the support plate (9).

8. The leather production waste gas treatment equipment according to claim 3, characterized in that: The support plate (9) has two sets of water-permeable holes (32) through it near the second gear (17). The inner wall of the water storage tank (4) is fixedly connected to a filter screen (33) near the lower end. The first liquid guide pipe (6) is installed below the filter screen (33).

9. The leather production waste gas treatment equipment according to claim 8, characterized in that: A drain pipe (34) is installed on the side surface of the water storage tank (4) above the filter screen (33). The filter screen (33) is inclined and tilted towards the drain pipe (34). An injection pipe (5) is installed on the side surface of the water storage tank (4) above the drain pipe (34).

Images