Waste gas collecting and purifying unit for pharmaceutical workshop

Abstract

The invention relates to the field of waste gas collection and purification equipment, and discloses a pharmaceutical workshop waste gas collection and purification unit which comprises a dust removal tower, a spraying tower is arranged on one side of the dust removal tower, the top of the dust removal tower communicates with the inner bottom of the spraying tower through a first exhaust pipe, and a second exhaust pipe is fixedly mounted at the top of the spraying tower; the tail end of the second exhaust pipe is fixedly connected with a bent pipe, the tail end of the bent pipe is fixedly mounted at the input end of a negative pressure fan, a discharge pipe is fixedly mounted at the output end of the negative pressure fan, a positioning ring frame is fixedly mounted in the middle of the interior of the spray tower, and a hollow cylinder is movably mounted in the middle of the interior of the positioning ring frame through a bearing seat. The pharmaceutical workshop waste gas purification effect is remarkable, the good adsorption function is continuously kept through efficient dust removal in the dust removal tower, filler rotation in the spraying tower, neutralization liquid reaction deep purification and activated carbon filler regeneration cycle at the bent pipe through centrifugal force and the dust suppression net, and the waste gas purification quality is improved.

Description

Technical Field

[0001] The invention relates to the field of waste gas collection and purification equipment, in particular to a waste gas collection and purification unit for a pharmaceutical workshop. Background Art

[0002] With the continuous development of the pharmaceutical industry, pharmaceutical workshops will generate a large amount of waste gas during the production process. These waste gases usually contain a variety of pollutants such as drug dust, by-product dust, acid waste gas, alkaline waste gas, organic compounds, and organic odor gas. If these waste gases are directly discharged into the atmosphere without effective treatment, they will cause serious harm to the environment and human health.

[0003] Traditional waste gas treatment methods often have some shortcomings when treating waste gas from pharmaceutical workshops. For example, some dust removal equipment has poor dust removal effect and cannot effectively remove drug dust and by-product dust, resulting in a high dust content in the waste gas. For acidic and alkaline waste gases in the waste gas, traditional treatment methods may not be able to achieve sufficient neutralization reactions, so that the acidic and alkaline substances in the waste gas cannot be completely removed. In addition, for the treatment of organic compounds and organic odorous gases, traditional methods may have problems such as poor adsorption effect and difficulty in regenerating fillers, resulting in unsatisfactory waste gas purification effects.

[0004] In order to effectively solve these problems existing in the waste gas treatment of pharmaceutical workshops, improve the purification effect of waste gas, and protect the ecological environment and human health, it is particularly important to develop a new type of waste gas collection and purification unit for pharmaceutical workshops. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a waste gas collection and purification unit for a pharmaceutical workshop, which solves the problem that the dust removal effect of traditional dust removal equipment is poor, the drug dust and by-product dust cannot be effectively removed, resulting in a high dust content in the waste gas and the acidic and alkaline waste gases in the waste gas cannot be fully neutralized, so that the acidic and alkaline substances in the waste gas cannot be completely removed.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a waste gas collection and purification unit for a pharmaceutical workshop, comprising a dust removal tower, a spray tower is provided on one side of the dust removal tower, the top of the dust removal tower is connected to the inner bottom of the spray tower through a first exhaust pipe, a second exhaust pipe is fixedly installed on the top of the spray tower, the end of the second exhaust pipe is fixedly connected with a bent pipe, the end of the bent pipe is fixedly installed on the input end of a negative pressure fan, and the output end of the negative pressure fan is fixedly installed with a discharge pipe.

[0007] Preferably, a positioning ring frame is fixedly installed in the inner middle part of the spray tower, and a hollow cylinder is movably installed in the inner middle part of the positioning ring frame through a bearing seat, a large gear is fixedly installed on the upper outer diameter of the hollow cylinder, small gears are movably installed on both sides of the top of the positioning ring frame, and the inner ends of the small gears are meshed and connected with the outer ends of the large gears, and a multi-leaf brush plate is fixedly installed in the middle part of the top of the small gear through a short shaft, a transmission rod is movably installed on one side of the middle part of the spray tower, and the bottom end of the hollow cylinder is provided with a desulfurization and denitrification filler through a filler fixing frame.

[0008] Preferably, a vertically arranged first guide pipe is provided on the outer diameter of a side of the bent pipe close to the negative pressure fan, a horizontally arranged second guide pipe is provided on the outer diameter of a side of the bent pipe close to the second exhaust pipe, and the second guide pipe is connected to the end of the first guide pipe, a reduction motor is fixedly installed on the side of the bottom end of the bent pipe close to the negative pressure fan, a driving end of the reduction motor extends to the interior of the first guide pipe and is fixedly installed with a first rotating shaft, a first spiral auger is fixedly installed on the outer diameter of the first rotating shaft, the transmission rod extends to the interior of the second guide pipe at one end away from the spray tower and is fixedly installed with a second rotating shaft, a second spiral auger is fixedly installed on the outer diameter of the second rotating shaft, and the interior of the bent pipe is filled with activated carbon filler.

[0009] Preferably, an air inlet pipe is fixedly installed on one side of the top of the dust removal tower, one end of the first exhaust pipe extends to the interior of the dust removal tower and a spiral guide plate is fixedly installed on the outer diameter, a dust screening net is fixedly installed on the inner wall of the dust removal tower, and an ash hopper is fixedly connected to the bottom end of the dust removal tower.

[0010] Preferably, an annular blow pipe is fixedly installed on the inner upper side of the dust removal tower, and a plurality of venturi tubes are evenly and fixedly connected to the bottom end of the annular blow pipe. One end of the annular blow pipe extends to the outside of the dust removal tower through a pipeline and is fixedly installed on the output end of the compressed air storage bag, and an electromagnetic pulse valve is fixedly installed on the outer diameter of the pipeline.

[0011] Preferably, an acidic neutralization liquid inlet pipe is fixedly installed on one side of the inner top of the dust removal tower, and the end of the acidic neutralization liquid inlet pipe extends to above the pinion on one side, and an alkaline neutralization liquid inlet pipe is fixedly installed on the other side of the inner top of the dust removal tower, and the end of the alkaline neutralization liquid inlet pipe extends to above the pinion on the other side.

[0012] Preferably, a large bevel gear is fixedly installed on the lower outer diameter of the hollow cylinder, the transmission rod extends to the interior of the spray tower at one end close to the spray tower and is fixedly installed with a small bevel gear, and the top of the small bevel gear is meshed and connected with one side of the bottom of the large bevel gear, and a flat-plate demister is fixedly installed on the inner top of the spray tower.

[0013] Preferably, a microwave generator is fixedly mounted on one side of the first guide tube, a heat dissipation fan unit is fixedly mounted on the top of the second guide tube, a collecting box is fixedly mounted on the bottom end of the second guide tube, and a plurality of small holes are provided at the connection between the collecting box and the second guide tube.

[0014] Preferably, the top end of the first rotating shaft extends to the outside of the first guide pipe and is fixedly installed with a driving wheel, a transmission shaft is movably installed on one side of the spray tower through a bearing seat, a driven wheel is fixedly installed on the top end of the transmission shaft, the outer diameters of the driving wheel and the driven wheel are connected by a synchronous belt, a driving bevel gear is fixedly installed on the bottom end of the transmission shaft, a driven bevel gear is fixedly installed on the middle outer diameter of the transmission rod, and the driven bevel gear and the inner side ends of the driving bevel gear are meshed and connected.

[0015] Working principle: First, start the negative pressure fan, which will put the inside of the equipment in a negative pressure state, and then introduce the exhaust gas generated in the workshop into the dust removal tower through the air inlet pipe. The spiral guide plate will guide the exhaust gas, and use the centrifugal force to make the drug dust and by-product dust in the exhaust gas fall continuously and finally fall into the ash hopper. The exhaust gas after dust removal enters the spray tower through the first exhaust pipe for secondary purification. By adding a dust screen to the inner wall of the dust removal tower, the wear of the inner wall of the dust removal tower by high-concentration or abrasive drug dust can be reduced, and the dust can also be effectively intercepted. At the same time, the electromagnetic pulse valve controls the compressed air storage bag to pass the compressed air through the return air duct and then spray it out from the venturi tube to clean the dust on the dust screen, which is convenient for multiple recycling. After entering the bottom of the spray tower, it will continue to rise, and the desulfurization and denitrification fillers will be used to desulfurize and denitrify the exhaust gas for purification. At this time, the reduction motor is started, and the first shaft is driven to rotate by the reduction motor, which drives the driving wheel on the top of the first shaft to rotate. The rotating driving wheel drives the driven wheel and the transmission shaft to rotate through the transmission of the synchronous belt. When the transmission shaft rotates, it will drive the driving bevel gear at the bottom to rotate, and then use the meshing transmission of the rotating driving bevel gear and the driven bevel gear to drive the transmission rod to rotate. When the transmission rod rotates, it will drive the small bevel gear to rotate, and use the meshing transmission of the small bevel gear and the large bevel gear to drive the hollow cylinder to rotate. The rotating hollow cylinder drives the desulfurization and denitrification fillers on the bottom filler fixing frame to rotate, thereby increasing the contact area between the filler and the exhaust gas, thereby improving the purification. Quality, and inject acidic neutralizing liquid and alkaline neutralizing liquid into the acidic neutralizing liquid inlet pipe and the alkaline neutralizing liquid inlet respectively. The two neutralizing liquids fall on the top of the multi-leaf brush plate respectively, and the hollow cylinder will also drive the large gear on the top to rotate when it rotates. The rotating large gear drives the small gears on both sides to rotate, thereby driving the multi-leaf brush plate to rotate. The high-speed rotating multi-leaf brush plate will scatter the neutralizing liquid and mix it with the air to form a high-speed neutralizing liquid water vapor fluid. These neutralizing liquid water vapor fluids will fully contact with the exhaust gas and undergo a neutralization reaction to remove the acidic and alkaline exhaust gases in the exhaust gas. The neutralization reaction will produce salt solution and moisture, which will pass through the desulfurization and denitrification fillers and fall to the bottom of the spray tower for later collection. The moisture can keep the filler in a certain moist state, which helps to improve High gas-filler contact efficiency promotes desulfurization and denitrification reactions. Finally, the treated exhaust gas will be defogged by the flat plate demister and then enter the elbow from the second exhaust pipe. The activated carbon filler in the elbow will be used to purify the organic compounds and organic odor gases in the exhaust gas. When the reduction motor drives the first shaft to rotate, it will also drive the first spiral auger to rotate. When the transmission rod rotates, it will also drive the second spiral auger to rotate. The rotating first auger will transport the activated carbon filler at the bottom of the elbow upward to the first guide pipe. At this time, the microwave generator is started, and the microwave generator will perform microwave radiation heating on the activated carbon filler in the first guide pipe, so that the organic pollutants adsorbed on the filler are fully decomposed and desorbed, completing the regeneration of the filler.When it is transported to the junction of the first guide pipe and the second guide pipe, the second rotating spiral auger is used to transport the filler to the left, and the heat dissipation fan unit is started to cool the activated carbon filler. At the same time, the decomposed and desorbed organic pollutants will fall into the collection box through the small holes, and the regenerated activated carbon filler will return to the top of the elbow. The cycle is repeated, which can keep the activated carbon filler in good adsorption and purification function, thereby improving the purification effect of the exhaust gas. The exhaust gas after the final purification will be discharged through the negative pressure fan and the exhaust pipe.

[0016] The present invention provides a waste gas collection and purification unit for a pharmaceutical workshop. It has the following beneficial effects:

[0017] 1. After the exhaust gas enters the dust removal tower of the present invention, the spiral guide plate uses centrifugal force to make the drug dust and by-product dust fall into the ash hopper, thereby realizing preliminary and efficient dust removal. The dust-blocking net on the inner wall of the dust removal tower can reduce the wear of the inner wall of the tower by high-concentration or abrasive drug dust, and effectively intercept the dust at the same time. The electromagnetic pulse valve is used to control the compressed air storage bag, and the compressed air is sprayed out through the annular blowing pipe and the venturi tube to clean the dust on the dust-blocking net, which is convenient for multiple recycling and ensures that the dust removal effect is continuous and stable.

[0018] 2. The present invention uses desulfurization and denitrification fillers to purify the waste gas in a spray tower. The rotation of the hollow cylinder drives the fillers to rotate, thereby increasing the contact area between the fillers and the waste gas and improving the purification quality. At the same time, the acidic neutralizing liquid and the alkaline neutralizing liquid are dispersed and mixed with the air under the action of the multi-leaf brush plate to form a high-speed neutralizing liquid water vapor fluid, which fully contacts the waste gas to generate a neutralization reaction, thereby removing the acidic and alkaline waste gas. At the same time, the salt solution and water generated are convenient for collection and promote the desulfurization and denitrification reactions.

[0019] 3. The present invention drives the first rotating shaft and the first spiral auger to rotate through a reduction motor, and transports the activated carbon filler at the bottom of the elbow upward to the first guide pipe. The microwave generator performs microwave radiation heating on the filler, so that the organic pollutants adsorbed on the filler are fully decomposed and desorbed, and the filler is regenerated. The second spiral auger is driven to rotate by a transmission rod to transport the filler to the left. The heat dissipation fan unit cools the filler, and the decomposed and desorbed organic pollutants fall into the collection box. The regenerated activated carbon filler returns to the top of the elbow for recycling, thereby maintaining good adsorption and purification functions and improving the exhaust gas purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the dust removal tower in the present invention;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 It is a schematic diagram of the internal structure of the spray tower in the present invention;

[0024] Figure 5 It is a three-dimensional structural diagram of the positioning ring frame in the present invention;

[0025] Figure 6 It is a bottom-up stereogram of the positioning ring frame in the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structure of the elbow in the present invention.

[0027] Among them, 1. dust removal tower; 2. first exhaust pipe; 3. spray tower; 4. second exhaust pipe; 5. elbow; 6. negative pressure fan; 7. discharge pipe; 8. air intake pipe; 9. spiral guide plate; 10. dust screen; 11. ash hopper; 12. annular spray pipe; 13. venturi; 14. compressed air storage bag; 15. electromagnetic pulse valve; 16. positioning ring frame; 17. hollow cylinder; 18. large gear; 19. small gear; 20. multi-leaf brush plate; 21. acid neutralization liquid inlet pipe; 22. alkaline neutralization liquid inlet pipe; 23. large bevel gear wheel; 24, transmission rod; 25, small bevel gear; 26, packing fixing frame; 27, desulfurization and denitrification packing; 28, flat demister; 29, first guide pipe; 30, second guide pipe; 31, reduction motor; 32, first rotating shaft; 33, first spiral auger; 34, microwave generator; 35, second rotating shaft; 36, second spiral auger; 37, cooling fan unit; 38, activated carbon packing; 39, driving wheel; 40, transmission shaft; 41, driven wheel; 42, synchronous belt; 43, driving bevel gear; 44, driven bevel gear. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example:

[0030] Please refer to the attached Figure 1 -Attached Figure 7 , an embodiment of the present invention provides a waste gas collection and purification unit for a pharmaceutical workshop, such as Figure 1As shown, it includes a dust removal tower 1, a spray tower 3 is provided on one side of the dust removal tower 1, the top of the dust removal tower 1 is connected to the inner bottom of the spray tower 3 through a first exhaust pipe 2, a second exhaust pipe 4 is fixedly installed on the top of the spray tower 3, the end of the second exhaust pipe 4 is fixedly connected with a bent pipe 5, the end of the bent pipe 5 is fixedly installed on the input end of the negative pressure fan 6, and the output end of the negative pressure fan 6 is fixedly installed with a discharge pipe 7.

[0031] In this embodiment, a positioning ring frame 16 is fixedly installed in the inner middle of the spray tower 3, and a hollow cylinder 17 is movably installed in the inner middle of the positioning ring frame 16 through a bearing seat, and a large gear 18 is fixedly installed on the upper outer diameter of the hollow cylinder 17. Small gears 19 are movably installed on both sides of the top of the positioning ring frame 16, and the inner ends of the small gears 19 are meshed and connected with the outer ends of the large gears 18. The middle part of the top of the small gear 19 is fixedly installed with a multi-leaf brush plate 20 through a short shaft. A transmission rod 24 is movably installed on one side of the middle of the spray tower 3. The bottom end of the hollow cylinder 17 is provided with a desulfurization and denitrification filler 27 through a filler fixing frame 26. In this structure, the positioning ring frame 16 provides a hollow cylinder 17 with a plurality of brush plates 20, and the inner ends of the small gears 19 are meshed and connected with the outer ends of the large gears 18. It provides stable support so that the hollow cylinder 17 can rotate smoothly under the action of the bearing seat. The large gear 18 is fixed on the hollow cylinder 17. When the hollow cylinder 17 rotates, it drives the large gear 18 to rotate together. The large gear 18 meshes with the small gear 19, so that the small gear 19 also rotates. The multi-leaf brush plate 20 on the small gear 19 can disperse the neutralizing liquid and mix it with the air during rotation to form a high-speed neutralizing liquid water vapor fluid, and the filler fixing frame 26 at the bottom of the hollow cylinder 17 fixes the desulfurization and denitrification filler 27. When the hollow cylinder 17 rotates, it drives the desulfurization and denitrification filler 27 to rotate together, thereby increasing the contact area between the filler and the exhaust gas and improving the purification quality.

[0032] Furthermore, a vertically arranged first guide pipe 29 is provided on the outer diameter of one side of the bent pipe 5 close to the negative pressure fan 6, a horizontally arranged second guide pipe 30 is provided on the outer diameter of one side of the bent pipe 5 close to the second exhaust pipe 4, and the second guide pipe 30 is connected to the end of the first guide pipe 29. A reduction motor 31 is fixedly installed on the side of the bottom end of the bent pipe 5 close to the negative pressure fan 6, the driving end of the reduction motor 31 extends to the interior of the first guide pipe 29 and is fixedly installed with a first rotating shaft 32, a first spiral auger 33 is fixedly installed on the outer diameter of the first rotating shaft 32, and the transmission rod 24 extends to the interior of the second guide pipe 30 at one end away from the spray tower 3 and is fixedly installed. A second rotating shaft 35 is fixedly installed, and a second spiral auger 36 is fixedly installed on the outer diameter of the second rotating shaft 35. The interior of the curved pipe 5 is filled with activated carbon filler 38. After the reduction motor 31 is started, the first rotating shaft 32 is driven to rotate, and the first spiral auger 33 on the first rotating shaft 32 rotates accordingly, and the activated carbon filler 38 at the bottom of the curved pipe 5 is transported upward to the first guide pipe 29. When the transmission rod 24 rotates, it drives the second rotating shaft 35 to rotate, and the second spiral auger 36 on the second rotating shaft 35 transports the filler to the left. The activated carbon filler 38 in the curved pipe 5 can finally purify other organic compounds and organic odor gases in the exhaust gas.

[0033] Furthermore, an air intake pipe 8 is fixedly installed on one side of the top of the dust removal tower 1, one end of the first exhaust pipe 2 extends to the interior of the dust removal tower 1 and a spiral guide plate 9 is fixedly installed on the outer diameter, a dust screening net 10 is fixedly installed on the inner wall of the dust removal tower 1, and an ash hopper 11 is fixedly connected to the bottom end of the dust removal tower 1. The exhaust gas generated in the workshop is introduced into the dust removal tower 1 through the air intake pipe 8. The spiral guide plate 9 guides the exhaust gas, and uses centrifugal force to make the drug dust and by-product dust in the exhaust gas fall continuously and finally fall into the ash hopper 11. The dust screening net 10 can reduce the wear of the inner wall of the dust removal tower 1 by high-concentration or highly abrasive drug dust, and effectively intercept the dust.

[0034] Furthermore, an annular blow pipe 12 is fixedly installed on the upper inner side of the dust removal tower 1, and a plurality of venturi tubes 13 are evenly and fixedly connected to the bottom end of the annular blow pipe 12. One end of the annular blow pipe 12 extends to the outside of the dust removal tower 1 through a pipeline and is fixedly installed at the output end of a compressed air storage bag 14, and an electromagnetic pulse valve 15 is fixedly installed on the outer diameter of the pipeline. The electromagnetic pulse valve 15 controls the compressed air storage bag 14 to pass the compressed air through the annular blow pipe 12, and then sprays it out from the venturi tube 13 to clean the dust on the dust screening net 10, which is convenient for multiple recycling and ensures that the dust removal effect is continuous and stable.

[0035] Specifically, the negative pressure fan 6 is started, and the negative pressure fan 6 puts the inside of the equipment in a negative pressure state, and then the exhaust gas generated in the workshop is introduced into the dust removal tower 1 through the air inlet pipe 8. The spiral guide plate 9 will guide the exhaust gas, and use the centrifugal force to make the drug dust and by-product dust in the exhaust gas fall continuously and finally fall into the ash hopper 11. The exhaust gas after dust removal enters the spray tower 3 through the first exhaust pipe 2 for secondary purification. By adding a dust screening net 10 to the inner wall of the dust removal tower 1, the wear of the inner wall of the dust removal tower 1 by high-concentration or highly abrasive drug dust can be reduced, and the dust can also be effectively intercepted. At the same time, the electromagnetic pulse valve 15 controls the compressed air storage bag 14 to pass the compressed air through the return air duct and then spray it out from the venturi tube 13 to clean the dust on the dust screening net 10, which is convenient for multiple recycling.

[0036] Furthermore, an acidic neutralization liquid inlet pipe 21 is fixedly installed on one side of the inner top of the dust removal tower 1, and the end of the acidic neutralization liquid inlet pipe 21 extends to above the pinion 19 on one side, and an alkaline neutralization liquid inlet pipe 22 is fixedly installed on the other side of the inner top of the dust removal tower 1, and the end of the alkaline neutralization liquid inlet pipe 22 extends to above the pinion 19 on the other side. Acidic neutralization liquid and alkaline neutralization liquid are injected into the acidic neutralization liquid inlet pipe 21 and the alkaline neutralization liquid inlet pipe 22 respectively, and the two neutralization liquids fall onto the multi-leaf brush plate 20 respectively.

[0037] Furthermore, a large bevel gear 23 is fixedly installed on the lower outer diameter of the hollow cylinder 17, and the transmission rod 24 extends to the interior of the spray tower 3 at one end close to the spray tower 3 and is fixedly installed with a small bevel gear 25, and the top of the small bevel gear 25 is meshed and connected with the bottom side of the large bevel gear 23. A flat-plate demister 28 is fixedly installed on the inner top of the spray tower 3. When the transmission rod 24 rotates, it drives the small bevel gear 25 to rotate, and the small bevel gear 25 meshes with the large bevel gear 23 for transmission, driving the hollow cylinder 17 to rotate. The treated exhaust gas will be defogged by the flat-plate demister 28 and then enter the curved pipe 5 through the second exhaust pipe 4.

[0038] Specifically, after the exhaust gas enters the bottom of the spray tower 3, it will continue to rise, and the exhaust gas will be desulfurized and denitrified by the desulfurization and denitrification filler 27. At this time, the reduction motor 31 is started, and the first rotating shaft 32 is driven to rotate by the reduction motor 31, driving the driving wheel 39 on the top of the first rotating shaft 32 to rotate. The rotating driving wheel 39 drives the driven wheel 41 and the transmission shaft 40 to rotate through the transmission of the synchronous belt 42. When the transmission shaft 40 rotates, it will drive the driving bevel gear 43 at the bottom to rotate, and then use the meshing transmission of the rotating driving bevel gear 43 and the driven bevel gear 44 to drive the transmission rod 24 to rotate. When the transmission rod 24 rotates, it will drive the small bevel gear 25 to rotate, and use the meshing transmission of the small bevel gear 25 and the large bevel gear 23 to drive the hollow cylinder 17 to rotate. The rotating hollow cylinder 17 drives the desulfurization and denitrification filler 27 on the bottom filler fixing frame 26 to rotate, thereby increasing the contact area between the filler and the exhaust gas, thereby improving the purification quality, and at the same time, the acid neutralization liquid is introduced into the pipe respectively. Acidic neutralizing liquid and alkaline neutralizing liquid are injected into the neutralizing liquid inlet pipe 21 and the alkaline neutralizing liquid inlet pipe 22, and the two neutralizing liquids fall onto the top of the multi-leaf brush plate 20 respectively. When the hollow cylinder 17 rotates, it will also drive the large gear 18 on the top to rotate. The rotating large gear 18 drives the small gears 19 on both sides to rotate, thereby driving the multi-leaf brush plate 20 to rotate. The high-speed rotating multi-leaf brush plate 20 will scatter the neutralizing liquid and mix it with the air to form a high-speed neutralizing liquid water vapor fluid. These neutralizing liquid water vapor fluids will fully contact with the exhaust gas and undergo a neutralization reaction to remove the acidic and alkaline exhaust gases in the exhaust gas. The neutralization reaction will produce salt solution and moisture. The salt solution will pass through the desulfurization and denitrification filler 27 and fall into the bottom of the spray tower 3 for later collection. The moisture can keep the filler in a certain moist state, which helps to improve the contact efficiency between the gas and the filler and promote the desulfurization and denitrification reactions. Finally, the treated exhaust gas will be defogged by the flat plate demister 28 and enter the curved pipe 5 through the second exhaust pipe 4.

[0039] Furthermore, a microwave generator 34 is fixedly installed on one side of the first guide tube 29, a heat dissipation fan unit 37 is fixedly installed on the top of the second guide tube 30, a collecting box is fixedly installed on the bottom end of the second guide tube 30, and a plurality of small holes are provided at the connection between the collecting box and the second guide tube 30. The microwave generator 34 performs microwave radiation heating on the activated carbon filler 38 in the first guide tube 29, so that the organic pollutants adsorbed on the filler are fully decomposed and desorbed, and the regeneration of the filler is completed. When it is transported to the junction of the first guide tube 29 and the second guide tube 30, the rotating second spiral auger 36 is used to transport the filler to the left, and the heat dissipation fan unit 37 is started at the same time to cool the activated carbon filler 38. At the same time, the decomposed and desorbed organic pollutants will fall into the collecting box through the small holes.

[0040] Furthermore, the top end of the first rotating shaft 32 extends to the outside of the first guide pipe 29 and is fixedly installed with a driving wheel 39. A transmission shaft 40 is movably installed on one side of the spray tower 3 through a bearing seat. A driven wheel 41 is fixedly installed on the top of the transmission shaft 40. The outer diameters of the driving wheel 39 and the driven wheel 41 are connected by a synchronous belt 42. A driving bevel gear 43 is fixedly installed on the bottom end of the transmission shaft 40. A driven bevel gear 44 is fixedly installed on the middle outer diameter of the transmission rod 24, and the driven bevel gear 44 and the inner side ends of the driving bevel gear 43 are meshed and connected. The reduction motor 31 drives the first rotating shaft 32 to rotate, driving the driving wheel 39 at the top of the first rotating shaft 32 to rotate. The rotating driving wheel 39 drives the driven wheel 41 and the transmission shaft 40 to rotate through the transmission of the synchronous belt 42. When the transmission shaft 40 rotates, it will drive the driving bevel gear 43 at the bottom to rotate, and then the meshing transmission of the rotating driving bevel gear 43 and the driven bevel gear 44 is used to drive the transmission rod 24 to rotate.

[0041] Specifically, the activated carbon filler 38 in the curved pipe 5 is used to perform the final purification of the organic compounds and organic odor gases in the exhaust gas. When the reduction motor 31 drives the first rotating shaft 32 to rotate, it also drives the first spiral auger 33 to rotate. When the transmission rod 24 rotates, it also drives the second spiral auger 36 to rotate. The rotating first auger will transport the activated carbon filler 38 at the bottom of the curved pipe 5 upward to the first guide pipe 29. At this time, the microwave generator 34 is started. The microwave generator 34 will perform microwave radiation heating on the activated carbon filler 38 in the first guide pipe 29, so that the organic pollutants adsorbed on the filler are fully discharged. After decomposition and desorption, the regeneration of the filler is completed. When it is transported to the junction of the first guide pipe 29 and the second guide pipe 30, the rotating second spiral auger 36 is used to transport the filler to the left, and the heat dissipation fan unit 37 is started to cool the activated carbon filler 38. At the same time, the organic pollutants after decomposition and desorption will fall into the collection box through the small holes, and the regenerated activated carbon filler 38 will return to the top of the bent pipe 5. The cycle is repeated, so that the activated carbon filler 38 can always maintain a good adsorption and purification function, thereby improving the purification effect of the exhaust gas. The exhaust gas after the final purification will be discharged through the negative pressure fan 6 and the exhaust pipe 7.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas collection and purification unit for a pharmaceutical workshop, comprising a dust removal tower (1), It is characterized in that A spray tower (3) is provided on one side of the dust removal tower (1); the top of the dust removal tower (1) is connected to the inner bottom of the spray tower (3) through a first exhaust pipe (2); a second exhaust pipe (4) is fixedly installed on the top of the spray tower (3); a bent pipe (5) is fixedly connected to the end of the second exhaust pipe (4); the end of the bent pipe (5) is fixedly installed on the input end of a negative pressure fan (6); and a discharge pipe (7) is fixedly installed on the output end of the negative pressure fan (6); A positioning ring frame (16) is fixedly installed in the inner middle of the spray tower (3), a hollow cylinder (17) is movably installed in the inner middle of the positioning ring frame (16) through a bearing seat, a large gear (18) is fixedly installed on the upper outer diameter of the hollow cylinder (17), small gears (19) are movably installed on both sides of the top of the positioning ring frame (16), and the inner ends of the small gears (19) are meshed and connected with the outer ends of the large gears (18), and a multi-leaf brush plate (20) is fixedly installed in the middle of the top of the small gear (19) through a short shaft, a transmission rod (24) is movably installed on one side of the middle of the spray tower (3), and a desulfurization and denitrification filler (27) is provided at the bottom end of the hollow cylinder (17) through a filler fixing frame (26); A first guide pipe (29) is vertically arranged on the outer diameter of a side of the curved pipe (5) close to the negative pressure fan (6); a second guide pipe (30) is horizontally arranged on the outer diameter of a side of the curved pipe (5) close to the second exhaust pipe (4), and the second guide pipe (30) is connected to the end of the first guide pipe (29); a reduction motor (31) is fixedly installed on the bottom end of the curved pipe (5) close to the negative pressure fan (6); the driving end of the reduction motor (31) extends to the inside of the first guide pipe (29) and is fixedly installed with a first rotating shaft (32); a first spiral auger (33) is fixedly installed on the outer diameter of the first rotating shaft (32); an end of the transmission rod (24) away from the spray tower (3) extends to the inside of the second guide pipe (30) and is fixedly installed with a second rotating shaft (35); a second spiral auger (36) is fixedly installed on the outer diameter of the second rotating shaft (35); and the interior of the curved pipe (5) is filled with activated carbon filler (38).

2. A waste gas collection and purification unit for a pharmaceutical workshop according to claim 1, It is characterized in that An air inlet pipe (8) is fixedly installed on one side of the top of the dust removal tower (1), one end of the first exhaust pipe (2) extends to the interior of the dust removal tower (1) and a spiral guide plate (9) is fixedly installed on the outer diameter, a dust blocking net (10) is fixedly installed on the inner wall of the dust removal tower (1), and an ash hopper (11) is fixedly connected to the bottom end of the dust removal tower (1).

3. The waste gas collection and purification unit for pharmaceutical workshop according to claim 1, It is characterized in that An annular blowing pipe (12) is fixedly installed on the upper inner side of the dust removal tower (1), and a plurality of venturi tubes (13) are evenly and fixedly connected to the bottom end of the annular blowing pipe (12). One end of the annular blowing pipe (12) extends to the outside of the dust removal tower (1) through a pipeline and is fixedly installed at the output end of a compressed air storage bag (14), and an electromagnetic pulse valve (15) is fixedly installed on the outer diameter of the pipeline.

4. The waste gas collection and purification unit for pharmaceutical workshop according to claim 1, It is characterized in that An acidic neutralization liquid inlet pipe (21) is fixedly mounted on one side of the inner top of the dust removal tower (1), and the end of the acidic neutralization liquid inlet pipe (21) extends to above the pinion gear (19) on one side; an alkaline neutralization liquid inlet pipe (22) is fixedly mounted on the other side of the inner top of the dust removal tower (1), and the end of the alkaline neutralization liquid inlet pipe (22) extends to above the pinion gear (19) on the other side.

5. The waste gas collection and purification unit for pharmaceutical workshop according to claim 1, It is characterized in that A large bevel gear (23) is fixedly mounted on the outer diameter of the lower side of the hollow cylinder (17); one end of the transmission rod (24) close to the spray tower (3) extends into the interior of the spray tower (3) and is fixedly mounted with a small bevel gear (25); the top of the small bevel gear (25) is meshed and connected with one side of the bottom of the large bevel gear (23); and a flat plate demister (28) is fixedly mounted on the inner top of the spray tower (3).

6. The waste gas collection and purification unit for pharmaceutical workshop according to claim 1, It is characterized in that A microwave generator (34) is fixedly mounted on one side of the first guide tube (29), a heat dissipation fan unit (37) is fixedly mounted on the top of the second guide tube (30), a collection box is fixedly mounted on the bottom end of the second guide tube (30), and a plurality of small holes are provided at the connection between the collection box and the second guide tube (30).

7. The waste gas collection and purification unit for pharmaceutical workshop according to claim 1, It is characterized in that The top end of the first rotating shaft (32) extends to the outside of the first guide pipe (29) and is fixedly mounted with a driving wheel (39); a transmission shaft (40) is movably mounted on one side of the spray tower (3) through a bearing seat; a driven wheel (41) is fixedly mounted on the top end of the transmission shaft (40); the outer diameters of the driving wheel (39) and the driven wheel (41) are connected via a synchronous belt (42); a driving bevel gear (43) is fixedly mounted on the bottom end of the transmission shaft (40); a driven bevel gear (44) is fixedly mounted on the middle outer diameter of the transmission rod (24); and the inner ends of the driven bevel gear (44) and the driving bevel gear (43) are meshed and connected.

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