Sludge drying device

Abstract

The invention relates to the technical field of environmental protection equipment, and discloses a sludge drying device which comprises a bottom plate, a spiral feeding mechanism, a centrifugal mechanism and a drying mechanism. The spiral feeding mechanism is arranged on the left side of the top of the bottom plate, a drying bin is fixedly arranged on the right side of the top of the bottom plate, a centrifugal bin is fixedly arranged on the top of the drying bin, the output end of the spiral feeding mechanism is connected with the top of the left side wall of the centrifugal bin, and the centrifugal mechanism is arranged in the centrifugal bin. According to the sludge drying device disclosed by the invention, the spiral blade is arranged, so that the extrusion force applied to sludge when the sludge moves to the top of the feeding barrel along with the spiral blade is gradually increased, and at the moment, water in the sludge is extruded out, flows into a liquid collecting tank through filter holes, and finally flows into the water collecting tank through a first liquid outlet pipe; therefore, the water content of the sludge is preliminarily reduced, and heat required for drying the sludge is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection equipment, and in particular to a sludge drying device. Background Art

[0002] Sludge is the product of sewage treatment. It is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloids, etc. The main characteristics of sludge are high water content, high organic content, easy to decompose and stink, and fine particles, small specific gravity, and colloidal liquid. It is a thick substance between liquid and solid and can be transported by pumps, but it is difficult to separate solids and liquids by sedimentation. However, in order to avoid sludge polluting the environment, sludge needs to be treated.

[0003] When treating sludge, it is generally necessary to dry it, but the sludge contains a large amount of water, and direct drying requires a large amount of heat waste and has low efficiency. Therefore, a sludge drying device is proposed. Summary of the invention

[0004] The present invention aims to solve the technical problem that sludge contains a large amount of water, direct drying requires a large amount of heat waste and has low efficiency, and provides a sludge drying device.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A sludge drying device comprises a bottom plate, a spiral feeding mechanism, a centrifugal mechanism and a drying mechanism; The spiral feeding mechanism is arranged on the top left side of the bottom plate, a drying bin is fixedly arranged on the top right side of the bottom plate, a centrifugal bin is fixedly arranged on the top of the drying bin, the output end of the spiral feeding mechanism is connected to the top of the left wall of the centrifugal bin, the centrifugal mechanism is arranged inside the centrifugal bin, the drying mechanism is arranged inside the drying bin, a water collecting trough is arranged between the spiral feeding mechanism and the drying bin, the water collecting trough is fixedly connected to the bottom plate, and a plurality of supports are fixedly arranged at the bottom of the bottom plate. During drying, the sludge is first transported to the inside of the centrifugal bin by the spiral feeding mechanism, and then the water in the sludge is separated by the centrifugal mechanism inside the centrifugal bin, so as to reduce the heat required for drying and reduce energy consumption. The separated liquid enters the water collecting trough for separate treatment, and the sludge after centrifugation flows into the drying bin for drying.

[0006] Furthermore, the spiral feeding mechanism includes a feeding bin, a feeding cylinder is connected to the bottom of the right side wall of the feeding bin, the top of the feeding cylinder is connected to the left top of the centrifugal bin, a driving motor is fixedly provided on the left side wall of the feeding bin, an output shaft is provided at the output end of the driving motor, the output shaft is vertically arranged with the left side wall of the feeding bin, and a feeding port is provided at the top of the feeding bin. When feeding, the sludge is added into the inside of the feeding bin along the feeding port, and then the driving motor is started to make the output shaft start to rotate.

[0007] Furthermore, a discharge port is provided at the connection between the right side wall of the feed bin and the loading barrel, a loading shaft is rotatably provided at the internal axis of the loading barrel, a lower reversing coupling is rotatably provided between the bottom end of the loading shaft and the other end of the output shaft, a spiral blade is provided on the outer wall of the loading shaft, and the edge of the spiral blade abuts against the inner wall of the loading barrel. When the output shaft rotates, the lower reversing coupling connected thereto is driven to start rotating, so that the loading shaft starts rotating inside the loading barrel, driving the spiral blade outside the loading shaft to start rotating, and the mud is transported from the feed bin to the top of the loading barrel through the spiral blade.

[0008] Furthermore, the arrangement density of the spiral blades around the feeding shaft gradually decreases from bottom to top, the upper outer wall of the feeding barrel is fixedly sleeved with a liquid collection barrel, the liquid collection barrel is coaxially arranged with the feeding barrel, a liquid collection tank is surrounded between the feeding barrel and the liquid collection barrel, a plurality of filter holes are provided on the outer wall of the feeding barrel located inside the liquid collection barrel, a liquid outlet is provided at the bottom of the liquid collection barrel, and a first liquid outlet pipe is connected to the pipeline between the liquid outlet and the water collection tank. When the sludge moves to the top of the feeding barrel with the spiral blades, the extrusion force it is subjected to gradually increases. At this time, the water inside the sludge is squeezed out and flows into the inside of the liquid collection tank through the filter holes, and finally flows into the inside of the water collection tank through the first liquid outlet pipe, thereby preliminarily reducing the water content of the sludge, which is convenient for the next step of treatment.

[0009] Furthermore, the centrifugal mechanism includes a centrifugal cylinder, which is vertically arranged in a funnel shape, and a first rack is circumferentially arranged on the top of the centrifugal cylinder. A discharge cylinder is horizontally arranged on the top of the centrifugal bin, and a discharge port is provided at the bottom of the discharge cylinder, and the discharge port is located at the upper left part of the centrifugal cylinder. The left input end of the discharge cylinder is connected to the top pipeline of the loading cylinder, and a transmission shaft is arranged inside the discharge cylinder, and the transmission shaft is coaxially arranged with the discharge cylinder, and an upper reversing coupling is rotatably arranged between the left end of the transmission shaft and the top end of the loading shaft, and the other end of the transmission shaft passes through the discharge cylinder and extends to the outside of the discharge cylinder, and the other end of the transmission shaft is connected to the first driving gear, and the first driving gear is meshed with the first rack. After the sludge enters the centrifugal bin, it flows into the inside of the discharge barrel along the feed barrel, and flows into the centrifugal barrel through the discharge port. When the feed shaft rotates, it drives the upper reversing coupling to rotate, so that the transmission shaft starts to rotate, and drives the first driving gear connected to the other end of the transmission shaft to start rotating. The centrifugal barrel starts to rotate through the first rack meshing with the first driving gear, and the sludge inside the centrifugal barrel is centrifuged to further separate the water in the sludge and reduce the water content of the sludge.

[0010] Furthermore, a connecting block is fixedly provided in the middle of the inner wall of the centrifugal bin, and a slide groove is horizontally provided at the connection between the connecting block and the centrifugal barrel, and the outer wall of the centrifugal barrel is slidably connected to the slide groove through a slider, and a centrifugal filter is fixedly provided inside the centrifugal barrel, and the centrifugal filter is arranged in parallel with the centrifugal barrel, and a component liquid tank is surrounded between the centrifugal filter and the centrifugal barrel. When the sludge flows out along the discharge port, it falls on the surface of the centrifugal filter on the inner wall of the centrifugal barrel, and flows downward under the action of gravity. At the same time, the rotation of the centrifugal barrel drives the centrifugal filter to rotate, generating centrifugal force on the sludge, so that the water in the sludge is further precipitated and enters the interior of the liquid separation tank. Through the synchronous rotation of the spiral blades and the centrifugal barrel, the sludge can be evenly distributed on the surface of the centrifugal filter, so that the water in the sludge is fully precipitated, thereby improving the dehydration effect.

[0011] Furthermore, an outer ring is disposed around the bottom of the centrifugal cylinder, the outer ring is rotatably connected to the centrifugal cylinder, an annular groove is provided inside the outer ring, a bottom hole is provided around the bottom of the centrifugal cylinder, the bottom hole is communicated with the liquid separation groove and the annular groove, a second liquid outlet pipe is connected to the left pipeline of the outer ring, the second liquid outlet pipe extends to the outside of the centrifugal chamber, and the output end of the second liquid outlet pipe is connected to the water collection tank pipeline. The water separated by centrifugation flows into the annular groove inside the outer ring, flows into the second liquid outlet pipe from the bottom hole, and finally flows into the inside of the water collection tank along the second liquid outlet pipe.

[0012] Further, the drying mechanism includes a feed pipe, a partition is fixedly provided at the connection between the drying bin and the centrifugal bin, the top input end of the feed pipe passes through the partition and is connected to the bottom pipeline of the centrifugal drum, the bottom output end pipeline of the feed pipe is connected to a drying drum, the drying drum is horizontally arranged, the drying drum includes a pair of side plates and a rotating drum arranged between the side plates, the side plates are fixedly connected to the inner wall of the drying bin, the two ends of the rotating drum are rotatably connected to the side plates, the outer side wall of the rotating drum is rotatably connected to the inner wall of the drying bin, and an opening is provided at the connection between the left side plate and the output end of the feed pipe. After being dehydrated, the sludge flows into the feed pipe, and then flows into the interior of the rotating drum along the opening.

[0013] Furthermore, a second rack is circumferentially provided on the outer side wall of the rotating drum, a driving bevel gear is fixedly provided on the bottom outer side wall of the centrifugal drum, a connecting shaft is vertically provided on the bottom of the right side wall of the centrifugal bin, the connecting shaft passes through the centrifugal bin and is rotatably connected thereto, a driven bevel gear is provided on the left end of the connecting shaft, the driving bevel gear is meshed with each other, a second driving gear is provided in the middle of the connecting shaft, the second driving gear is meshed with the second rack, a driving wheel is connected to the right end of the connecting shaft, a hot air blower is fixedly provided on the outside of the right side plate through a mounting frame, a stirring tube is rotatably connected to the output end of the hot air blower, the stirring tube passes through the right side plate and extends to the inside of the rotating drum, the stirring tube is coaxially arranged with the rotating drum, a driven wheel is provided on the outside of the right end of the stirring tube, a transmission belt is meshedly connected between the driving wheel and the driven wheel, a plurality of stirring rods are staggeredly provided on the outer wall of the rotating drum of the stirring tube, a scraper is fixedly provided on the other end of the stirring rod, and a plurality of air holes are opened on the outer wall of the stirring tube. At this time, the hot air blower is started to allow high-temperature air to enter the mixing tube, and then spray out along the several air holes on the side wall of the mixing tube to dry the sludge. When the centrifugal cylinder rotates, it drives the driving bevel gear to rotate, so that the driven bevel gear starts to rotate. When the driven bevel gear rotates, it drives the connecting shaft to rotate, so that the second driving gear in the middle of the connecting shaft starts to rotate. When the second driving gear rotates, it drives the rotating cylinder to start rotating in the opposite direction through the second rack meshing with it, so that the sludge inside the rotating cylinder is constantly turned over, increasing the contact area between the sludge and the high-temperature air and improving the drying efficiency. When the connecting shaft rotates, it drives the driving wheel at its right end to start rotating at the same time, and drives the driven wheel to start rotating through the transmission belt meshing with it, so that the mixing tube starts to rotate in the opposite direction to the rotating tube, driving the mixing rod on the outer wall of the mixing tube to start rotating, turning the sludge inside the rotating tube, further increasing the contact area between the sludge and the high-temperature air, and improving the drying efficiency. When the mixing rod rotates, it drives the scraper to start rotating, so that the scraper scrapes off the sludge on the inner wall of the rotating cylinder during movement to prevent the sludge from condensing on the inner wall of the rotating cylinder.

[0014] Furthermore, a discharge port is provided at the bottom of the right side panel, an air outlet is provided at the top of the right side panel, an outer pipeline of the air outlet is connected to an air inlet pipe, the other end of the air inlet pipe is connected to a filter bin, an activated carbon adsorption layer and a molecular sieve are provided inside the filter bin, and an air outlet pipe is provided on the right side wall of the filter bin. After the gas is ejected along the stirring pipe, it flows out along the air outlet, flows into the inside of the filter bin through the air inlet pipe, and the odor and harmful substances in the gas can be filtered out through the activated carbon adsorption layer and the molecular sieve inside the filter bin to prevent them from polluting the air.

[0015] Beneficial effects of the present invention: 1. The sludge drying device of the present invention is provided with spiral blades, so that the extrusion force on the sludge gradually increases as the spiral blades move to the top of the loading barrel. At this time, the moisture inside the sludge is squeezed out and flows into the inside of the liquid collecting tank through the filter holes, and finally flows into the inside of the water collecting tank through the first liquid outlet pipe, thereby preliminarily reducing the water content of the sludge and reducing the heat required for sludge drying.

[0016] 2. The sludge drying device of the present invention is provided with a centrifugal cylinder, so that when the sludge flows out along the discharge port, it falls on the surface of the centrifugal filter on the inner wall of the centrifugal cylinder and flows downward under the action of gravity. At the same time, the rotation of the centrifugal cylinder drives the centrifugal filter to rotate, thereby generating centrifugal force on the sludge, so that the moisture in the sludge is further precipitated and enters the interior of the liquid separation tank. Through the synchronous rotation of the spiral blades and the centrifugal cylinder, the sludge can be evenly distributed on the surface of the centrifugal filter, thereby fully precipitating the moisture in the sludge and improving the dehydration effect.

[0017] 3. The sludge drying device of the present invention is provided with a rotating drum and a stirring tube. When the sludge enters the rotating drum, the hot air blower is started to allow high-temperature air to enter the stirring tube and then be sprayed out along a plurality of air holes on the side wall of the stirring tube to dry the sludge. When the centrifugal drum rotates, the driving bevel gear is driven to rotate, so that the driven bevel gear starts to rotate. When the driven bevel gear rotates, the connecting shaft is driven to rotate, so that the second driving gear in the middle of the connecting shaft starts to rotate. When the second driving gear rotates, the rotating drum is driven to start rotating in the opposite direction through the second rack meshing therewith, so that the sludge inside the rotating drum is constantly turned over. , increase the contact area between sludge and high-temperature air, improve drying efficiency, when the connecting shaft rotates, it drives the driving wheel at its right end to start rotating, and drives the driven wheel to start rotating through the transmission belt meshing with it, so that the stirring tube starts to rotate in the opposite direction of the rotating drum, driving the stirring rod on the outer wall of the stirring tube to start rotating, turning the sludge inside the rotating drum, further increasing the contact area between sludge and high-temperature air, and improving drying efficiency. When the stirring rod rotates, it drives the scraper to start rotating, so that the scraper scrapes the sludge on the inner wall of the rotating drum during movement to prevent the sludge from condensing on the inner wall of the rotating drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structural schematic diagram of the sludge drying device; Figure 2 This is a schematic diagram of the internal structure of the centrifugal bin and drying bin of the sludge drying device; Figure 3 It is a schematic diagram of the internal structure of the filter of the sludge drying device.

[0019] Explanation of the reference numerals: 1. bottom plate; 2. water collecting trough; 3. feed bin; 4. driving motor; 5. output shaft; 6. lower reversing coupling; 7. loading barrel; 8. discharge port; 9. liquid accumulating barrel; 10. loading shaft; 11. spiral blade; 12. liquid outlet; 13. first liquid outlet pipe; 14. centrifugal bin; 15. drying bin; 16. second liquid outlet pipe; 17. upper reversing coupling; 18. transmission shaft; 19. discharge barrel; 20. discharge port; 21. first driving gear; 22. connecting block; 23. centrifugal barrel; 24. centrifugal filter; 25. chute ; 26. liquid separation tank; 27. bottom hole; 28. outer ring; 29. ​​first rack; 30. partition; 31. feed pipe; 32. side plate; 33. opening; 34. rotating cylinder; 35. discharge port; 36. driving bevel gear; 37. driven bevel gear; 38. connecting shaft; 39. second driving gear; 40. second rack; 41. driving wheel; 42. driven wheel; 43. hot air blower; 44. stirring tube; 45. transmission belt; 46. stirring rod; 47. scraper; 48. air outlet; 49. air inlet pipe; 50. filter bin; 51. air outlet pipe. DETAILED DESCRIPTION

[0020] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0021] like Figure 1-3 As shown, a sludge drying device comprises a bottom plate 1, a spiral feeding mechanism, a centrifugal mechanism and a drying mechanism; The spiral feeding mechanism is arranged on the top left side of the bottom plate 1, a drying bin 15 is fixedly arranged on the top right side of the bottom plate 1, a centrifugal bin 14 is fixedly arranged on the top of the drying bin 15, the output end of the spiral feeding mechanism is connected to the top of the left wall of the centrifugal bin 14, the centrifugal mechanism is arranged inside the centrifugal bin 14, the drying mechanism is arranged inside the drying bin 15, a water collecting tank 2 is arranged between the spiral feeding mechanism and the drying bin 15, the water collecting tank 2 is fixedly connected to the bottom plate 1, and a plurality of supports are fixedly arranged at the bottom of the bottom plate 1. During drying, the sludge is first transported to the inside of the centrifugal bin 14 by the spiral feeding mechanism, and then the water in the sludge is separated by the centrifugal mechanism inside the centrifugal bin 14, so as to reduce the heat required for drying and reduce energy consumption. The separated liquid enters the water collecting tank 2 for separate treatment, and the sludge after centrifugation flows into the drying bin 15 for drying.

[0022] The spiral feeding mechanism includes a feeding bin 3, a feeding cylinder 7 is connected to the bottom of the right side wall of the feeding bin 3, the top of the feeding cylinder 7 is connected to the left top of the centrifugal bin 14, a driving motor 4 is fixedly provided on the left side wall of the feeding bin 3, an output shaft 5 is provided at the output end of the driving motor 4, the output shaft 5 is vertically arranged with the left side wall of the feeding bin 3, and a feeding port is provided at the top of the feeding bin 3. When feeding, the sludge is added into the inside of the feeding bin 3 along the feeding port, and then the driving motor 4 is started to make the output shaft 5 start to rotate.

[0023] A discharge port 8 is provided at the connection between the right side wall of the feed bin 3 and the upper barrel 7, a feed shaft 10 is rotatably provided at the inner axis of the upper barrel 7, a lower reversing coupling 6 is rotatably provided between the bottom end of the feed shaft 10 and the other end of the output shaft 5, a spiral blade 11 is provided on the outer wall of the feed shaft 10, and the edge of the spiral blade 11 abuts against the inner wall of the upper barrel 7. When the output shaft 5 rotates, the lower reversing coupling 6 connected thereto is driven to start rotating, so that the feed shaft 10 starts rotating inside the upper barrel 7, driving the spiral blade 11 outside the feed shaft 10 to start rotating, and the mud and dirt are transported from the feed bin 3 to the top of the upper barrel 7 through the spiral blade 11.

[0024] The arrangement density of the spiral blades 11 around the feeding shaft 10 gradually decreases from bottom to top, the upper outer wall of the feeding barrel 7 is fixedly sleeved with a liquid collection barrel 9, the liquid collection barrel 9 is coaxially arranged with the feeding barrel 7, and a liquid collection tank is surrounded between the feeding barrel 7 and the liquid collection barrel 9, and the outer wall of the feeding barrel 7 located inside the liquid collection barrel 9 is provided with a plurality of filter holes, and the bottom of the liquid collection barrel 9 is provided with a liquid outlet 12, and the pipeline between the liquid outlet 12 and the water collection tank 2 is connected with a first liquid outlet pipe 13. When the sludge moves to the top of the feeding barrel 7 with the spiral blades 11, the extrusion force it is subjected to gradually increases. At this time, the water content inside the sludge is squeezed out and flows into the inside of the liquid collection tank through the filter holes, and finally flows into the inside of the water collection tank 2 through the first liquid outlet pipe 13, thereby preliminarily reducing the water content of the sludge, which is convenient for the next step of treatment.

[0025] The centrifugal mechanism includes a centrifugal cylinder 23, which is vertically arranged in a funnel shape, and a first rack 29 is circumferentially arranged on the top of the centrifugal cylinder 23. A discharge cylinder 19 is horizontally arranged on the top of the centrifugal bin 14, and a discharge port 20 is provided at the bottom of the discharge cylinder 19, and the discharge port 20 is located at the upper left side of the centrifugal cylinder 23. The left input end of the discharge cylinder 19 is connected to the top pipeline of the loading cylinder 7, and a transmission shaft 18 is arranged inside the discharge cylinder 19. The transmission shaft 18 is coaxially arranged with the discharge cylinder 19, and an upper reversing coupling 17 is rotatably arranged between the left end of the transmission shaft 18 and the top end of the loading shaft 10, and the other end of the transmission shaft 18 passes through the discharge cylinder 19 and extends to the outside of the discharge cylinder 19, and the other end of the transmission shaft 18 is connected to a first driving gear 21, and the first driving gear 21 is meshed with the first rack 29. After the sludge enters the centrifugal bin 14, it flows into the inside of the discharge barrel 19 along the feed barrel, and flows into the centrifugal barrel 23 through the discharge port 20. When the feed shaft 10 rotates, it drives the upper reversing coupling 17 to rotate, so that the transmission shaft 18 starts to rotate, and drives the first driving gear 21 connected to the other end of the transmission shaft 18 to start rotating. The centrifugal barrel 23 starts to rotate through the first rack 29 meshing with the first driving gear 21, and the sludge inside the centrifugal barrel 23 is centrifuged to further separate the moisture in the sludge and reduce the moisture content of the sludge.

[0026] A connecting block 22 is fixedly provided in the middle of the inner wall of the centrifugal bin 14, and a chute 25 is horizontally provided at the connection between the connecting block 22 and the centrifugal cylinder 23. The outer wall of the centrifugal cylinder 23 is slidably connected to the chute 25 through a slider. A centrifugal filter 24 is fixedly provided inside the centrifugal cylinder 23, and the centrifugal filter 24 is arranged parallel to the centrifugal cylinder 23. A component liquid tank 26 is surrounded between the centrifugal filter 24 and the centrifugal cylinder 23. When the sludge flows out along the discharge port 20, it falls on the surface of the centrifugal filter 24 on the inner wall of the centrifugal cylinder 23, and flows downward under the action of gravity. At the same time, the centrifugal cylinder 23 rotates and drives the centrifugal filter 24 to rotate accordingly, generating centrifugal force on the sludge, so that the water in the sludge is further precipitated and enters the interior of the liquid separation tank 26. Through the synchronous rotation of the spiral blade 11 and the centrifugal cylinder 23, the sludge can be evenly distributed on the surface of the centrifugal filter 24, so that the water in the sludge is fully precipitated, thereby improving the dehydration effect.

[0027] An outer ring 28 is disposed around the bottom of the centrifugal cylinder 23, and the outer ring 28 is rotatably connected to the centrifugal cylinder 23. An annular groove is provided inside the outer ring 28, and a bottom hole 27 is provided around the bottom of the centrifugal cylinder 23. The bottom hole 27 is connected to the liquid separation tank 26 and the annular groove. The left pipeline of the outer ring 28 is connected to the second liquid outlet pipe 16, and the second liquid outlet pipe 16 extends to the outside of the centrifugal chamber 14. The output end of the second liquid outlet pipe 16 is connected to the pipeline of the water collection tank 2. The water separated by centrifugation flows into the annular groove inside the outer ring 28, and flows into the second liquid outlet pipe 16 from the bottom hole 27, and finally flows into the inside of the water collection tank 2 along the second liquid outlet pipe 16.

[0028] The drying mechanism includes a feed pipe 31, a partition 30 is fixedly provided at the connection between the drying bin 15 and the centrifugal bin 14, the top input end of the feed pipe 31 passes through the partition 30 and is connected to the bottom pipeline of the centrifugal drum 23, the bottom output end pipeline of the feed pipe 31 is connected to a drying drum, the drying drum is horizontally arranged, the drying drum includes a pair of side plates 32 and a rotating drum 34 arranged between the side plates 32, the side plates 32 are fixedly connected to the inner wall of the drying bin 15, the two ends of the rotating drum 34 are rotatably connected to the side plates 32, the outer side wall of the rotating drum 34 is rotatably connected to the inner wall of the drying bin 15, and an opening 33 is provided at the connection between the left side plate 32 and the output end of the feed pipe 31. After dehydration, the sludge flows into the feed pipe 31, and then flows into the inside of the rotating drum 34 along the opening 33.

[0029] The outer side wall of the rotating cylinder 34 is surrounded by a second rack 40, the bottom outer side wall of the centrifugal cylinder 23 is fixedly provided with a driving bevel gear 36, and the bottom of the right side wall of the centrifugal bin 14 is vertically provided with a connecting shaft 38, the connecting shaft 38 passes through the centrifugal bin 14 and is rotatably connected thereto, the left end of the connecting shaft 38 is provided with a driven bevel gear 37, the driving bevel gear 36 is meshed, the middle part of the connecting shaft 38 is provided with a second driving gear 39, the second driving gear 39 is meshed with the second rack 40, the right end of the connecting shaft 38 is connected with a driving wheel 41, and the outside of the side plate 32 on the right side is connected by A hot air blower 43 is fixedly provided on the mounting frame, and a stirring tube 44 is rotatably connected to the output end of the hot air blower 43. The stirring tube 44 passes through the right side plate 32 and extends to the inside of the rotating cylinder 34. The stirring tube 44 is coaxially arranged with the rotating cylinder 34. A driven wheel 42 is arranged on the outer side of the right end of the stirring tube 44. A transmission belt 45 is meshingly connected between the driving wheel 41 and the driven wheel 42. The stirring tube 44 is located on the outer wall of the rotating cylinder 34 and is staggered with a plurality of stirring rods 46. A scraper 47 is fixedly provided on the other end of the stirring rod 46. A plurality of air holes are opened on the outer wall of the stirring tube 44. At this time, the hot air blower 43 is started to allow high-temperature air to enter the stirring tube 44, and then spray out along the several air holes on the side wall of the stirring tube 44 to dry the sludge. When the centrifugal drum 23 rotates, it drives the driving bevel gear 36 to rotate, so that the driven bevel gear 37 starts to rotate. When the driven bevel gear 37 rotates, it drives the connecting shaft 38 to start rotating, so that the second driving gear 39 in the middle of the connecting shaft 38 starts to rotate. When the second driving gear 39 rotates, it drives the rotating drum 34 to start rotating in the opposite direction through the second rack 40 meshing therewith, so that the sludge inside the rotating drum 34 is constantly turned over, increasing the contact area between the sludge and the high-temperature air. To improve the drying efficiency, when the connecting shaft 38 rotates, the driving wheel 41 at its right end is driven to start rotating, and the driven wheel 42 is driven to start rotating through the transmission belt 45 meshing therewith, so that the stirring tube 44 starts to rotate in the opposite direction to the rotating drum 34, and the stirring rod 46 on the outer wall of the stirring tube 44 starts to rotate, and the sludge inside the rotating drum 34 is turned over, further increasing the contact area between the sludge and the high-temperature air, and improving the drying efficiency. When the stirring rod 46 rotates, it drives the scraper 47 to start rotating, so that the scraper 47 scrapes the sludge on the inner wall of the rotating drum 34 during movement to prevent the sludge from condensing on the inner wall of the rotating drum 34.

[0030] The bottom of the right side panel 32 is provided with a discharge port 35, and the top of the right side panel 32 is provided with an air outlet 48. The outer pipeline of the air outlet 48 is connected to an air inlet pipe 49, and the other end of the air inlet pipe 49 is connected to a filter chamber 50. The inside of the filter chamber 50 is provided with an activated carbon adsorption layer and a molecular sieve mesh, and the right side wall of the filter chamber 50 is provided with an air outlet pipe 51. After the gas is ejected along the stirring pipe 44, it flows out along the air outlet 48 and flows into the inside of the filter chamber 50 through the air inlet pipe 49. The odor and harmful substances in the gas can be filtered out through the activated carbon adsorption layer and the molecular sieve mesh inside the filter chamber 50 to prevent them from polluting the air.

[0031] Working principle: During drying, the sludge is first transported to the inside of the centrifugal bin 14 through the spiral feeding mechanism, and then the water in the sludge is separated by the centrifugal mechanism inside the centrifugal bin 14, so as to reduce the heat required for drying and reduce energy consumption. The separated liquid enters the water collecting tank 2 for separate treatment, and the sludge after centrifugation flows into the drying bin 15 for drying; during feeding, the sludge is added to the inside of the feed bin 3 through the feed port, and then the drive motor 4 is started to make the output shaft 5 start to rotate. When the output shaft 5 rotates, it drives the lower reversing coupling 6 connected thereto to start to rotate, so that The feeding shaft 10 starts to rotate inside the feeding barrel 7, driving the spiral blade 11 outside the feeding shaft 10 to start rotating, and the sludge is transported from the feeding bin 3 to the top of the feeding barrel 7 through the spiral blade 11; the extrusion force on the sludge gradually increases when the spiral blade 11 moves to the top of the feeding barrel 7, at this time, the water inside the sludge is squeezed out, flows into the inside of the liquid collecting tank through the filter hole, and finally flows into the inside of the water collecting tank 2 through the first liquid outlet pipe 13, thereby preliminarily reducing the water content of the sludge, which is convenient for the next step of processing; after entering the centrifugal bin 14, the sludge flows into the discharge barrel along the feeding barrel The sludge in the centrifugal drum 23 is centrifuged through the first rack 29 meshing with the first driving gear 21. The sludge flows into the interior of the centrifugal drum 23 through the discharge port 20. When the feed shaft 10 rotates, the upper reversing coupling 17 is driven to rotate, so that the transmission shaft 18 starts to rotate, and the first driving gear 21 connected to the other end of the transmission shaft 18 starts to rotate. The centrifugal drum 23 starts to rotate through the first rack 29 meshing with the first driving gear 21, and the sludge in the centrifugal drum 23 is centrifuged to further separate the water in the sludge and reduce the water content of the sludge. When the sludge flows out along the discharge port 20, it falls on the surface of the centrifugal filter 24 on the inner wall of the centrifugal drum 23. Under the action of gravity, the sludge flows out of the centrifugal drum 23. The centrifugal filter 24 rotates and generates centrifugal force on the sludge, so that the water in the sludge is further separated and enters the inner part of the liquid separation tank 26. The spiral blades 11 and the centrifugal filter 24 rotate synchronously, so that the sludge can be evenly distributed on the surface of the centrifugal filter 24, so that the water in the sludge is fully separated and the dehydration effect is improved; the water separated by centrifugation flows into the annular groove inside the outer ring 28, and flows into the second liquid outlet pipe 16 from the bottom hole 27, and finally flows into the inner part of the water collecting tank 2 along the second liquid outlet pipe 16;After dehydration, the sludge flows into the feed pipe 31, and then flows into the interior of the rotating drum 34 along the opening 33. At this time, the hot air blower 43 is started to allow high-temperature air to enter the stirring tube 44, and then spray out along the several air holes on the side wall of the stirring tube 44 to dry the sludge. When the centrifugal drum 23 rotates, it drives the driving bevel gear 36 to rotate, so that the driven bevel gear 37 starts to rotate. When the driven bevel gear 37 rotates, it drives the connecting shaft 38 to start rotating, so that the second driving gear 39 in the middle of the connecting shaft 38 starts to rotate. When the second driving gear 39 rotates, it drives the rotating drum 34 to start rotating in the opposite direction through the second rack 40 meshing therewith, so that the sludge inside the rotating drum 34 is constantly turned over, increasing the contact area between the sludge and the high-temperature air and improving the drying efficiency. When the connecting shaft 38 rotates, it simultaneously drives the driving wheel 4 at its right end. 1 starts to rotate, and the driven wheel 42 starts to rotate through the transmission belt 45 meshing with it, so that the stirring tube 44 starts to rotate in the opposite direction to the rotating cylinder 34, and drives the stirring rod 46 on the outer wall of the stirring tube 44 to start to rotate, turning the sludge inside the rotating cylinder 34, further increasing the contact area between the sludge and the high-temperature air, and improving the drying efficiency. When the stirring rod 46 rotates, it drives the scraper 47 to start to rotate, so that the scraper 47 scrapes off the sludge on the inner wall of the rotating cylinder 34 during movement, and prevents the sludge from condensing on the inner wall of the rotating cylinder 34; the gas is ejected along the stirring tube 44 and flows out along the gas outlet 48, and flows into the interior of the filter chamber 50 through the air inlet pipe 49. The odor and harmful substances in the gas can be filtered out through the activated carbon adsorption layer and the molecular sieve mesh inside the filter chamber 50 to prevent them from polluting the air. ;

[0032] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. A sludge drying device, characterized in that: It comprises a bottom plate (1), a spiral feeding mechanism, a centrifugal mechanism and a drying mechanism; The spiral feeding mechanism is arranged on the left side of the top of the bottom plate (1), a drying bin (15) is fixedly arranged on the right side of the top of the bottom plate (1), a centrifugal bin (14) is fixedly arranged on the top of the drying bin (15), an output end of the spiral feeding mechanism is connected to the top of the left side wall of the centrifugal bin (14), the centrifugal mechanism is arranged inside the centrifugal bin (14), the drying mechanism is arranged inside the drying bin (15), a water collecting trough (2) is arranged between the spiral feeding mechanism and the drying bin (15), the water collecting trough (2) is fixedly connected to the bottom plate (1), and a plurality of supports are fixedly arranged at the bottom of the bottom plate (1).

2. A sludge drying device according to claim 1, characterized in that The spiral feeding mechanism comprises a feeding bin (3), a feeding cylinder (7) is connected to the bottom of the right side wall of the feeding bin (3), the top of the feeding cylinder (7) is connected to the top of the left side of the centrifugal bin (14), a driving motor (4) is fixedly arranged on the left side wall of the feeding bin (3), an output shaft (5) is arranged at the output end of the driving motor (4), the output shaft (5) is arranged perpendicular to the left side wall of the feeding bin (3), and a feeding port is arranged at the top of the feeding bin (3).

3. A sludge drying device according to claim 2, characterized in that A discharge port (8) is provided at the connection between the right side wall of the feed bin (3) and the loading barrel (7); a loading shaft (10) is rotatably provided at the inner axis of the loading barrel (7); a lower reversing coupling (6) is rotatably provided between the bottom end of the loading shaft (10) and the other end of the output shaft (5); a spiral blade (11) is provided on the outer wall of the loading shaft (10); and the edge of the spiral blade (11) abuts against the inner wall of the loading barrel (7).

4. A sludge drying device according to claim 3, characterized in that The arrangement density of the spiral blades (11) around the feeding shaft (10) gradually decreases from bottom to top, the upper outer wall of the feeding cylinder (7) is fixedly sleeved with a liquid storage cylinder (9), the liquid storage cylinder (9) and the feeding cylinder (7) are coaxially arranged, and a liquid collecting trough is formed between the feeding cylinder (7) and the liquid storage cylinder (9), and a plurality of filter holes are provided on the outer wall of the inner part of the feeding cylinder (7) located in the liquid storage cylinder (9), and a liquid outlet (12) is provided at the bottom of the liquid storage cylinder (9), and a first liquid outlet pipe (13) is connected to the liquid outlet (12) and the water collecting trough (2) by a pipeline.

5. A sludge drying device according to claim 3, characterized in that The centrifugal mechanism comprises a centrifugal cylinder (23), the centrifugal cylinder (23) is vertically arranged in a funnel shape, a first rack (29) is circumferentially arranged on the top of the centrifugal cylinder (23), a discharge cylinder (19) is horizontally arranged on the top of the centrifugal bin (14), a discharge port (20) is provided at the bottom of the discharge cylinder (19), and the discharge port (20) is located at the upper left side of the centrifugal cylinder (23), the left input end of the discharge cylinder (19) is connected to the top pipeline of the upper cylinder (7), and the discharge cylinder (19) is connected to the upper cylinder (7). ) is provided with a transmission shaft (18) inside, the transmission shaft (18) is coaxially arranged with the discharge barrel (19), an upper reversing coupling (17) is rotatably arranged between the left end of the transmission shaft (18) and the top end of the loading shaft (10), the other end of the transmission shaft (18) passes through the discharge barrel (19) and extends to the outside of the discharge barrel (19), and the other end of the transmission shaft (18) is connected to a first driving gear (21), and the first driving gear (21) is meshed with the first rack (29).

6. A sludge drying device according to claim 5, characterized in that A connecting block (22) is fixedly arranged at the middle of the inner side wall of the centrifugal bin (14); a sliding groove (25) is horizontally provided at the connection between the connecting block (22) and the centrifugal cylinder (23); the outer wall of the centrifugal cylinder (23) is slidably connected to the sliding groove (25) via a sliding block; a centrifugal filter screen (24) is fixedly arranged inside the centrifugal cylinder (23); the centrifugal filter screen (24) is arranged parallel to the centrifugal cylinder (23); and a component liquid tank (26) is arranged between the centrifugal filter screen (24) and the centrifugal cylinder (23).

7. A sludge drying device according to claim 6, characterized in that An outer ring (28) is disposed around the bottom of the centrifugal cylinder (23), and the outer ring (28) is rotatably connected to the centrifugal cylinder (23). An annular groove is provided inside the outer ring (28). A bottom hole (27) is disposed around the bottom of the centrifugal cylinder (23), and the bottom hole (27) is communicated with the liquid separation tank (26) and the annular groove. The left pipeline of the outer ring (28) is connected to a second liquid outlet pipe (16), and the second liquid outlet pipe (16) extends to the outside of the centrifugal chamber (14). The output end of the second liquid outlet pipe (16) is connected to the pipeline of the water collecting tank (2).

8. A sludge drying device according to claim 5, characterized in that The drying mechanism comprises a feed pipe (31), a partition (30) is fixedly provided at the connection between the drying bin (15) and the centrifugal bin (14), the top input end of the feed pipe (31) passes through the partition (30) and is connected to the bottom pipeline of the centrifugal cylinder (23), the bottom output end pipeline of the feed pipe (31) is connected to a drying cylinder, the drying cylinder is arranged horizontally, the drying cylinder comprises a pair of side plates (32) and a rotating cylinder (34) arranged between the side plates (32), the side plates (32) are fixedly connected to the inner wall of the drying bin (15), the two ends of the rotating cylinder (34) are rotatably connected to the side plates (32), the outer wall of the rotating cylinder (34) is rotatably connected to the inner wall of the drying bin (15), and an opening (33) is provided at the connection between the left side plate (32) and the output end of the feed pipe (31).

9. A sludge drying device according to claim 8, characterized in that The outer wall of the rotating cylinder (34) is provided with a second rack (40) in a circumferential manner, the bottom outer wall of the centrifugal cylinder (23) is fixedly provided with a driving bevel gear (36), the bottom of the right side wall of the centrifugal chamber (14) is provided with a connecting shaft (38) vertically, the connecting shaft (38) passes through the centrifugal chamber (14) and is rotatably connected thereto, the left end of the connecting shaft (38) is provided with a driven bevel gear (37) which meshes with the driving bevel gear (36), the middle part of the connecting shaft (38) is provided with a second driving gear (39), the second driving gear (39) meshes with the second rack (40), the right end of the connecting shaft (38) is connected with a driving wheel (41), and the outside of the right side plate (32) is connected by The mounting frame is fixedly provided with a hot air blower (43); the output end of the hot air blower (43) is rotatably connected to a stirring tube (44); the stirring tube (44) penetrates the right side plate (32) and extends to the interior of the rotating cylinder (34); the stirring tube (44) is coaxially arranged with the rotating cylinder (34); a driven wheel (42) is arranged on the outer side of the right end of the stirring tube (44); a transmission belt (45) is meshingly connected between the driving wheel (41) and the driven wheel (42); a plurality of stirring rods (46) are staggeredly arranged on the outer wall of the rotating cylinder (34); a scraper (47) is fixedly arranged at the other end of the stirring rod (46); and a plurality of air holes are opened on the outer wall of the stirring tube (44).

10. A sludge drying device according to claim 9, characterized in that A discharge port (35) is provided at the bottom of the right side panel (32), an air outlet (48) is provided at the top of the right side panel (32), an outer pipeline of the air outlet (48) is connected to an air inlet pipe (49), the other end of the air inlet pipe (49) is connected to a filter chamber (50), an activated carbon adsorption layer and a molecular sieve are provided inside the filter chamber (50), and an air outlet pipe (51) is provided on the right side wall of the filter chamber (50).

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