Efficient energy-saving spray drying equipment

Abstract

The invention relates to the technical field of drying equipment, and particularly discloses efficient energy-saving spray drying equipment which comprises a main tower, a scraping plate, a track, a driving mechanism and a high-speed centrifugal atomizer. The high-speed centrifugal atomizer is mounted at the top of the main tower and extends into the main tower, and the track is mounted on the inner wall of the main tower and spirally arranged along the circumference of the inner wall of the main tower; the scraper is slidably connected to the track, and one side edge of the scraper is attached to the inner wall of the main tower; the driving mechanism is installed on the inner top face of the top of the main tower and used for driving the scraper to move along the track. The spray drying equipment has the effect of improving the drying efficiency of the spray drying equipment.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to high-efficiency and energy-saving spray drying equipment. Background Art

[0002] Spray drying equipment is a device that can complete drying and granulation at the same time. According to the process requirements, the pressure, flow rate and size of the spray hole of the liquid pump can be adjusted to obtain the required spherical particles of a certain size ratio. The liquid is sprayed into a mist and dried in contact with hot air.

[0003] In the related technology, the spray drying equipment mainly includes a hot air heating treatment system, a feed liquid conveying system, a main tower atomization drying system and a finished product recovery system. The hot air and heat treatment system filter the external air and heat and transport it to the main tower after heating. The feed liquid conveying system transports the feed liquid to the high-speed centrifugal atomizer in the main tower atomization drying system. The high-speed centrifugal atomizer atomizes the feed liquid and throws it to the top of the main tower. The hot air in the main tower dries the atomized feed liquid. After drying, the material is extracted from the bottom of the main tower through the finished product recovery system, and the material is filtered and collected by the dust collector.

[0004] With regard to the above-mentioned related technologies, during the process of the high-speed centrifugal atomizer throwing out the liquid feed, there is a possibility that the liquid feed adheres to the inner wall at the top of the main tower. Although the liquid feed adhering to the inner wall of the main tower is also dried under hot air drying, there is still dried material adsorbed on the inner wall of the main tower. Over a long period of time, more and more material accumulates on the inner wall of the main tower, and it is necessary to stop the machine regularly to clean the inner wall of the main tower. The main tower needs to be cooled down before it can be cleaned. After cleaning, the main tower needs to be heated to reach the temperature of atomization drying, so that the spray drying equipment cannot continue to dry, thereby reducing the drying efficiency of the spray drying equipment. Summary of the invention

[0005] In order to improve the drying efficiency of a spray drying device, the present application provides a high-efficiency and energy-saving spray drying device.

[0006] The present application provides an energy-saving spray drying device that adopts the following technical solutions: A high-efficiency and energy-saving spray drying equipment comprises a main tower, a scraper, a track, a driving mechanism and a high-speed centrifugal atomizer; the high-speed centrifugal atomizer is installed on the top of the main tower and extends into the main tower, the track is installed on the inner wall of the main tower, and the track is spirally arranged along the circumference of the inner wall of the main tower; the scraper is slidably connected to the track, and one side of the scraper is attached to the inner wall of the main tower; the driving mechanism is installed on the inner top surface of the top of the main tower, and the driving mechanism is used to drive the scraper to move along the track.

[0007] Optionally, the scraper includes a plate body, a scraper strip and a roller, a placement groove is provided on one side of the plate body, the roller is rotatably connected to the two side walls of the placement groove, and the roller rolls on the side of the track away from the inner wall of the main tower; a connecting rod is connected to the side of the plate body close to the track, the connecting rod is located below the roller, a positioning rod is connected to the end of the connecting rod, and a rotating tube is rotatably connected to the end of the positioning rod, a positioning groove is provided on the outer peripheral surface of the lower part of the track, the positioning groove is arranged along the spiral direction of the track, and the rotating tube rolls on the inner wall of the positioning groove; two scraper strips are provided, both of which are connected to the side of the scraper close to the track, one of the scraper strips is located above the track, and the other scraper strip is located below the track.

[0008] Optionally, the driving mechanism includes a driving motor, a rotating rod, a worm, a worm wheel and a telescopic rod; a mounting ring is connected to the inner top surface of the top of the main tower, the worm wheel is sleeved on the outer circumference of the mounting ring, the driving motor is installed on the outer circumference of the main tower, one end of the rotating rod is coaxially connected to the output shaft of the driving motor, the rotating rod extends into the main tower, the rotating rod is located above the track, a support plate is connected to the inner top surface of the top of the main tower, the rotating rod is rotatably connected to the support plate, one end of the worm is connected to the end of the rotating rod away from the driving motor, and the worm is meshed with the worm wheel; one end of the telescopic rod is hinged to the bottom surface of the worm wheel, and the other end of the telescopic rod is hinged to the side of the scraper away from the track.

[0009] Optionally, the telescopic rod includes a rod body, a tube body and an outer tube, one end of the rod body is hinged to the side of the scraper away from the track, and a first piston is integrally formed with the end of the rod body away from the scraper; the tube body is sleeved outside the rod body, the first piston slides inside the tube body, the inner wall of the end of the tube body close to the scraper is connected to a first limiting ring, the rod body slides on the inner wall of the first limiting ring, and a second piston is integrally formed with the end of the tube body away from the scraper; the outer tube is sleeved outside the tube body, the second piston slides on the inner wall of the tube body, the end of the outer tube away from the scraper is hinged to the bottom surface of the worm gear, the inner wall of the end of the outer tube close to the scraper is connected to a second limiting ring, and the tube body slides on the inner wall of the second limiting ring.

[0010] Optionally, it also includes a dust collector and a fan, the dust collector is arranged on the periphery of the main tower, the top of the dust collector is connected to an air outlet duct, the periphery of the dust collector is connected to a feed pipe, and the bottom of the dust collector is connected to a receiving bin; the bottom of the main tower is connected to a discharge pipe, and the end of the discharge pipe away from the main tower is connected to the feed pipe; the fan is installed on the top surface of the main tower, the air inlet of the fan is connected to an exhaust duct, and the end of the exhaust duct away from the fan is connected to the end of the air outlet duct.

[0011] Optionally, the dust collector includes a top plate, an outer shell, a mesh tube, a support rod, a primary dust bag and a secondary dust bag, the outer shell being connected to the bottom surface of the top plate, the air outlet pipe being connected to the top surface of the top plate, and the feed pipe being connected to the circumferential surface of the outer shell; the mesh tube being connected to the bottom surface of the top plate and being connected to the air outlet pipe; a plurality of support rods are provided, a plurality of the support rods are connected to the bottom surface of the top plate, and a plurality of the support rods are evenly distributed around the circumference of the mesh tube; the primary dust bag is sleeved on a plurality of the support rods, the primary dust bag is connected to the bottom surface of the top plate, and the bottom of the primary dust bag is connected to the outside world; the secondary dust bag is sleeved on the mesh tube, the top end of the secondary dust bag is connected to the bottom surface of the top plate, the secondary dust bag is located in the primary dust bag, and the pores of the secondary dust bag are smaller than the pores of the primary dust bag; the material collecting bin is detachably connected to the bottom of the outer shell.

[0012] Optionally, a counterweight ring is connected to the bottom opening of the first-level dust removal bag, and the counterweight ring is located directly below the second-level dust removal bag.

[0013] Optionally, the inner wall of the top plate is connected to a support plate, the bottom surface of the support plate is rotatably connected to a fan, the bottom surface of the fan is connected to a reciprocating screw, the bottom end of the reciprocating screw is rotatably connected to the bottom of the network pipe, the reciprocating screw is provided with a transmission ring, and the transmission ring and the reciprocating screw are threadedly transmitted; the outer peripheral surface of the transmission ring is connected to two symmetrically arranged transmission rods, and the peripheral surface of the network pipe is provided with a sliding groove for the two transmission rods to slide; the outer sleeve of the network pipe is provided with a sliding ring, and the sliding ring is installed on the two ends of the transmission rods.

[0014] Optionally, one of the transmission rods has a bearing inner ring fixedly connected at its end, a first gear coaxially connected to the bearing outer ring, the first gear is located in the slide groove, a rack is connected to the inner wall of the slide groove close to the first gear, and the first gear meshes with the rack; the outer ring end face of the bearing away from the transmission rod is connected to a connecting block, the outer circumferential surface of the connecting block is coaxially connected to the second gear, the second gear is located outside the network pipe, the inner circumferential surface of the sliding ring is connected to an end face gear ring, and the second gear meshes with the end face gear ring; the end face of the connecting block away from the transmission rod is connected to a first limiting rod, and the end face of the other transmission rod away from the first limiting rod is connected to a second limiting rod, and the inner circumferential surface of the sliding ring is provided with a sliding groove for sliding of the first limiting rod and the second limiting rod, and the sliding groove is provided around the circumference of the sliding ring.

[0015] Optionally, a plurality of arc-shaped plates are connected to the outer circumferential surface of the sliding ring, the plurality of arc-shaped plates are evenly distributed around the circumference of the sliding ring, and adjacent arc-shaped plates are connected to each other.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: For materials adhering to the inner wall of the main tower, the drive mechanism drives the scraper to move along the track, and the scraper scrapes off the materials adhering to the inner wall of the main tower. The materials fall to the bottom of the main tower and are sucked away by the fan. There is no need to stop the machine to scrape off the materials on the inner wall of the main tower, so that the spray drying equipment can continue to dry, thereby improving the drying efficiency of the spray drying equipment; When the scraper is cleaning the inner wall of the main tower, the scraper drives the roller to roll on the track surface, the connecting rod drives the positioning rod, and the positioning rod drives the rotating tube to roll in the positioning groove. Under the restriction of the rotating tube, the roller is close to the track and is not easy to fall off the track. The plate body drives the scraper to scrape the inner wall of the main tower; When the material in the feed pipe enters the outer shell, the primary dust bag filters the material in the airflow, and the filtered airflow enters between the secondary dust bag and the primary dust bag, and the secondary dust bag filters the airflow again, so that all the material in the airflow is filtered; the material collected on the surface of the primary dust bag falls to the bottom of the outer shell, and the material collected on the surface of the secondary dust bag falls to the bottom of the outer shell through the bottom opening of the primary dust bag, and finally falls into the receiving bin to collect the material; When the fan is started, the fan located in the top plate rotates due to the airflow, and the fan drives the reciprocating screw to rotate, the reciprocating screw drives the transmission ring to rise and fall, the transmission ring drives the transmission rod to rise and fall, the transmission rod drives the sliding ring to rise and fall, and the sliding ring pushes the inner side of the secondary dust bag up and down, pushing the material adsorbed in the pores of the secondary dust bag out of the pores and falling between the primary dust bag and the secondary dust bag, while keeping the airflow of the secondary dust bag unobstructed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the spray drying equipment of the embodiment of the present application; Figure 2 It is a schematic diagram of the cross-sectional structure of the main tower of the embodiment of the present application; Figure 3 This Figure 2 The enlarged structural diagram of part A in the middle; Figure 4 This Figure 2 The enlarged structural diagram of part B in the middle; Figure 5 is a schematic cross-sectional structure diagram of a telescopic rod according to an embodiment of the present application; Figure 6 is a schematic diagram of the cross-sectional structure of the housing of an embodiment of the present application; Figure 7 It is a schematic diagram of the cross-sectional structure of the primary dust removal bag in the embodiment of the present application; Figure 8 It is a schematic cross-sectional structure diagram of a secondary dust removal bag in an embodiment of the present application; Fig. 9 It is a partial structural schematic diagram of the dust collector of the embodiment of the present application; Fig.10 This Fig. 9 The enlarged structural diagram of the middle C part; Fig.11 is a schematic diagram of the structure of a sliding ring according to an embodiment of the present application; Fig.12 It is a schematic diagram of the cross-sectional structure of the sliding ring of the embodiment of the present application.

[0018] Description of reference numerals: 1. Main tower; 11. Air inlet cavity; 12. Air outlet cavity; 13. Air inlet pipe; 14. Installation bin; 15. Discharge pipe; 16. Feed pipe; 17. Exhaust pipe; 2. Scraper; 21. Plate; 211. Placement slot; 212. Connecting rod; 213. Positioning rod; 214. Rotating pipe; 22. Scraper strip; 23. Roller; 3. Track; 31. Positioning slot; 4. Driving mechanism; 41. Driving motor; 42. Rotating rod; 43. Worm; 44. Worm gear; 45. Telescopic rod; 451. Rod body; 452. Tube body; 453. Outer tube; 454. First piston; 455. First limiting ring; 456. Second piston; 457. Second limiting ring; 46. Installation ring; 47. Support plate; 5. Dust collector; 501. Air outlet pipe; 51. Top Plate; 511, external thread ring; 52, shell; 53, mesh tube; 531, slide groove; 54, support rod; 55, primary dust bag; 551, counterweight ring; 56, secondary dust bag; 57, support plate; 571, fan; 572, reciprocating screw; 573, transmission ring; 574, transmission rod; 575, bearing; 576, first gear; 577, rack; 578, connecting block; 579, second gear; 58, sliding ring; 581, end face gear ring; 582, first limit rod; 583, second limit rod; 584, sliding groove; 61, high-speed centrifugal atomizer; 611, liquid inlet pipe; 62, hot air heating mechanism; 63, fan; 64, barrel; 65, liquid pump; 66, collecting bin; 7, arc plate; 8, retaining ring. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-12 This application is described in further detail.

[0020] The present application embodiment discloses a highly efficient and energy-saving spray drying device. Figure 1-12The spray drying equipment includes a main tower 1, a scraper 2, a track 3, a driving mechanism 4, a high-speed centrifugal atomizer 61, a dust collector 5, a hot air heating mechanism 62, a fan 63, a barrel 64 and a liquid pump 65; a circular air inlet chamber 11 is arranged on the top of the main tower 1, a truncated cone-shaped air outlet chamber 12 is arranged on the bottom of the air inlet chamber 11, and the bottom of the air outlet chamber 12 is connected to the inner top surface of the top of the main tower 1; an air inlet pipe 13 is connected to the circumferential surface of the top of the main tower 1, and the end of the air inlet pipe 13 is connected to the air inlet chamber 11, and a hot air heating mechanism 62 is arranged on the circumferential side of the main tower 1, and the hot air heating mechanism 62 is connected to the other end of the air inlet pipe 13, and the hot air heating mechanism 62 is used to extract external air and heat it and discharge it to the air inlet pipe 13; an installation bin 14 is arranged on the top of the main tower 1, and the bottom of the installation bin 14 passes through the middle position of the air inlet chamber 11 and the air outlet chamber 12, and the high-speed centrifugal atomizer 61 is installed at the bottom of the installation bin 14 and penetrates into the main tower 1.

[0021] The material barrel 64 is arranged on the side of the main tower 1, and the material barrel 64 is filled with the material liquid to be dried. The top of the high-speed centrifugal atomizer 61 is connected with a liquid inlet pipe 611, and the end of the liquid inlet pipe 611 away from the high-speed centrifugal atomizer 61 extends into the material barrel 64. The material liquid pump 65 is installed on the top of the main tower 1, and the material liquid pump 65 is connected to the liquid inlet pipe 611. The material liquid pump 65 extracts the material liquid in the material barrel 64 through the liquid inlet pipe 611; the dust collector 5 is arranged on the top of the main tower 1 On the peripheral side, the top of the dust collector 5 is connected to an air outlet duct 501, the peripheral side of the dust collector 5 is connected to a feed pipe 16, and the bottom of the dust collector 5 is connected to a receiving bin 66; the bottom of the main tower 1 is connected to a discharge pipe 15, and the end of the discharge pipe 15 away from the main tower 1 is connected to the feed pipe 16; the fan 63 is installed on the top surface of the main tower 1, and the air inlet of the fan 63 is connected to an exhaust pipe 17, and the end of the exhaust pipe 17 away from the fan 63 is connected to the end of the air outlet duct 501.

[0022] The upper half of the main tower 1 is cylindrical, and the lower half of the main tower 1 is truncated cone-shaped. The track 3 is installed on the inner wall of the upper half of the main tower 1, and the track 3 is spirally arranged along the circumference of the inner wall of the main tower 1; the scraper 2 is slidably connected to the track 3, and one side of the scraper 2 is attached to the inner wall of the main tower 1; the driving mechanism 4 is installed on the inner top surface of the top of the main tower 1, and the driving mechanism 4 is used to drive the scraper 2 to move along the track 3.

[0023] When the spray drying equipment needs to dry the slurry, the hot air heating mechanism 62 blows hot air into the air inlet chamber 11 through the air inlet pipe 13, and the air inlet chamber 11 is filled with hot air. The hot air in the air inlet chamber 11 is then discharged into the main tower 1 through the space between the inner wall of the air outlet chamber 12 and the outer wall of the installation bin 14, so that the main tower 1 is filled with hot air. The liquid pump 65 extracts the liquid in the barrel 64 through the liquid inlet pipe 611, and the liquid enters the high-speed centrifugal atomizer 61. The high-speed centrifugal atomizer 61 atomizes the liquid and throws it out. The hot air dries the atomized liquid. The dried material enters the discharge pipe 15 under the traction of the wind force of the fan 63, and the material enters the discharge pipe 15 through the discharge pipe 15. The material enters the feed pipe 16, and then enters the dust collector 5. After being filtered by the dust collector 5, the material falls into the receiving bin 66. The air is then discharged to the exhaust pipe 17 through the outlet pipe 501, and finally discharged through the fan 63, thus completing the atomization drying of the liquid feed; for the material adhering to the inner wall of the main tower 1, the drive mechanism 4 drives the scraper 2 to move along the track 3, and the scraper 2 scrapes off the material adhering to the inner wall of the main tower 1. The material falls to the bottom of the main tower 1 and is sucked away together by the fan 63, so there is no need to stop the machine to scrape off the material on the inner wall of the main tower 1, so that the spray drying equipment can continue to dry, thereby improving the drying efficiency of the spray drying equipment.

[0024] The track 3 is a cylinder, and the scraper 2 includes a plate body 21, a scraper strip 22 and a roller 23. A placement groove 211 is provided in the middle position of one side of the plate body 21, and the roller 23 is rotatably connected to the two side walls of the placement groove 211 through a rotating shaft, and the roller 23 rolls on the side of the track 3 away from the inner wall of the main tower 1; a connecting rod 212 is connected to the side of the plate body 21 close to the track 3, and the connecting rod 212 is located below the roller 23. A positioning rod 213 is vertically connected to the end of the connecting rod 212, and the positioning rod 213 faces upward. A rotating tube 214 is rotatably connected to the end of the positioning rod 213. A positioning groove 31 is provided on the outer peripheral surface of the lower part of the track 3, and the positioning groove 31 is arranged along the spiral direction of the track 3, and the rotating tube 214 rolls on the inner wall of the positioning groove 31; two scraper strips 22 are provided, and the two scraper strips 22 are connected to the side of the scraper 2 close to the track 3, one of the scraper strips 22 is located above the track 3, and the other scraper strip 22 is located below the track 3.

[0025] When the scraper 2 is cleaning the inner wall of the main tower 1, the scraper 2 drives the roller 23 to roll on the surface of the track 3, the connecting rod 212 drives the positioning rod 213, and the positioning rod 213 drives the rotating tube 214 to roll in the positioning groove 31. Under the restriction of the rotating tube 214, the roller 23 is close to the track 3, and the roller 23 is not easy to fall off the track 3. The plate body 21 drives the scraper 22 to scrape the inner wall of the main tower 1.

[0026] The driving mechanism 4 includes a driving motor 41, a rotating rod 42, a worm 43, a worm wheel 44 and a telescopic rod 45; a mounting ring 46 is connected to the inner top surface of the top of the main tower 1, the mounting ring 46 is coaxial with the air outlet cavity 12, the worm wheel 44 is sleeved on the outer circumference of the mounting ring 46, the driving motor 41 is installed on the outer circumference of the main tower 1, one end of the rotating rod 42 is coaxially connected to the output shaft of the driving motor 41, the rotating rod 42 extends into the main tower 1, the rotating rod 42 is located above the track 3, a support plate 47 is connected to the inner top surface of the top of the main tower 1, the rotating rod 42 is rotatably connected in the support plate 47, one end of the worm 43 is connected to the end of the rotating rod 42 away from the driving motor 41, and the worm 43 is meshed with the worm wheel 44; one end of the telescopic rod 45 is hinged to the bottom surface of the worm wheel 44, and the other end of the telescopic rod 45 is hinged to the middle position of the plate body 21 away from the side of the scraper strip 22.

[0027] The telescopic rod 45 includes a rod body 451, a tube body 452 and an outer tube 453. One end of the rod body 451 is hinged to the middle position of the side of the plate body 21 away from the scraper strip 22. The end of the rod body 451 away from the scraper 2 is integrally formed with a first piston 454; the tube body 452 is sleeved outside the rod body 451, and the first piston 454 slides inside the tube body 452. The inner wall of the end of the tube body 452 close to the plate body 21 is connected to a first limiting ring 455. The second piston 456 is integrally formed on the end of the tube body 452 away from the plate body 21 and slides on the inner wall of the first limiting ring 455; the outer tube 453 is sleeved on the outside of the tube body 452, and the second piston 456 slides on the inner wall of the tube body 452. The end of the outer tube 453 away from the plate body 21 is hinged to the bottom surface of the worm gear 44, and the inner wall of the end of the outer tube 453 close to the plate body 21 is connected to the second limiting ring 457, and the tube body 452 slides on the inner wall of the second limiting ring 457.

[0028] When the scraper 2 is needed to clean the inner wall of the main tower 1, the driving motor 41 drives the rotating rod 42 to rotate, the rotating rod 42 drives the worm 43 to rotate, the worm 43 drives the worm wheel 44 to rotate, the worm wheel 44 drives the telescopic rod 45 to rotate, and the telescopic rod 45 drives the scraper 2 to move on the track 3. As the distance between the scraper 2 and the worm wheel 44 becomes larger and larger, the rod body 451 extends out of the tube body 452, and the tube body 452 extends out of the outer tube 453. As the scraper 2 changes the length of the telescopic rod 45, the scraper 2 is driven to move along the track 3 through the worm wheel 44; when the driving motor 41 drives the rotating rod 42 to rotate in the opposite direction, the scraper 2 also moves in the opposite direction along the track 3. At this time, the scraper 2 pushes the rod body 451 to retract into the tube body 452, and the tube body 452 retracts into the outer tube 453.

[0029] The dust collector 5 includes a top plate 51, an outer shell 52, a mesh tube 53, a support rod 54, a primary dust bag 55 and a secondary dust bag 56. The top surface of the top plate 51 is connected with an external threaded ring 511, the inner wall of the top of the outer shell 52 is threadedly connected to the outer peripheral surface of the external threaded ring 511, the air outlet pipe 501 is connected to the top surface of the top plate 51, and the feed pipe 16 is connected to the peripheral surface of the outer shell 52; the mesh tube 53 is connected to the bottom surface of the top plate 51 and is connected to the air outlet pipe 501, and the bottom end of the mesh tube 53 is closed; four support rods 54 are provided, and the four support rods 54 are connected to On the bottom surface of the top plate 51, four support rods 54 are evenly distributed around the circumference of the mesh tube 53; the first-level dust removal bag 55 is sleeved on the four support rods 54, the first-level dust removal bag 55 is connected to the bottom surface of the top plate 51, the bottom of the first-level dust removal bag 55 is connected to the outside, the second-level dust removal bag 56 is sleeved on the mesh tube 53, the top of the second-level dust removal bag 56 is connected to the bottom surface of the top plate 51, the second-level dust removal bag 56 is located in the first-level dust removal bag 55, and the pores of the second-level dust removal bag 56 are smaller than the pores of the first-level dust removal bag 55; the material collection bin 66 is detachably connected to the bottom of the outer shell 52.

[0030] When the material in the feed pipe 16 enters the outer shell 52, the primary dust bag 55 filters the material in the airflow, and the filtered airflow enters between the secondary dust bag 56 and the primary dust bag 55, and the secondary dust bag 56 filters the airflow again, so that all the material in the airflow is filtered; the material gathered on the surface of the primary dust bag 55 falls to the bottom of the outer shell 52, and the material gathered on the surface of the secondary dust bag 56 falls to the bottom of the outer shell 52 through the bottom opening of the primary dust bag 55, and finally falls into the material receiving bin 66 to collect the material.

[0031] The bottom opening of the primary dust removal bag 55 is connected to a counterweight ring 551 , which is located directly below the secondary dust removal bag 56 . Materials accumulated on the surface of the secondary dust removal bag 56 leak out of the primary dust removal bag 55 through the counterweight ring 551 .

[0032] A support plate 57 is connected to the inner wall of the top plate 51, and a fan 571 is rotatably connected to the middle position of the bottom surface of the support plate 57, and a reciprocating screw 572 is connected to the middle position of the bottom surface of the fan 571, and the bottom end of the reciprocating screw 572 is rotatably connected to the bottom of the network tube 53. A transmission ring 573 is sleeved on the reciprocating screw 572, and the transmission ring 573 and the reciprocating screw 572 are threadedly transmitted; two symmetrically arranged transmission rods 574 are connected to the outer circumference of the transmission ring 573, and a slide groove 531 for the two transmission rods 574 to slide is provided on the circumference of the network tube 53, and the slide groove 531 connects the inner and outer sides of the network tube 53; a sliding ring 58 is provided on the outer sleeve of the network tube 53, and the sliding ring 58 is installed on the ends of the two transmission rods 574.

[0033] When the fan 63 is started, the fan 571 located in the top plate 51 rotates due to the airflow, and the fan 571 drives the reciprocating screw 572 to rotate, and the reciprocating screw 572 drives the transmission ring 573 to rise and fall, and the transmission ring 573 drives the transmission rod 574 to rise and fall, and the transmission rod 574 drives the sliding ring 58 to rise and fall, and the sliding ring 58 pushes the inner side of the secondary dust removal bag 56 up and down, pushing the materials adsorbed in the pores of the secondary dust removal bag 56 out of the pores and dropping them between the primary dust removal bag 55 and the secondary dust removal bag 56, while keeping the airflow of the secondary dust removal bag 56 unobstructed.

[0034] The end of one of the transmission rods 574 is fixedly connected to the inner ring of the bearing 575, and the outer ring of the bearing 575 is coaxially connected to the first gear 576. The first gear 576 is located in the slide groove 531, and the inner wall of the slide groove 531 close to the first gear 576 is connected to a rack 577. The rack 577 is arranged along the length direction of the reciprocating screw 572, and the first gear 576 is meshed with the rack 577; the outer ring end face of the bearing 575 away from the transmission rod 574 is connected to a connecting block 578, and the outer peripheral surface of the connecting block 578 is coaxially connected to a second gear 579, and the second gear 579 is located outside the network tube 53. The inner circumference of the sliding ring 58 is connected to an end face toothed ring 581, the teeth of the end face toothed ring 581 are facing upward, and the second gear 579 is meshed with the end face toothed ring 581; the end face of the connecting block 578 away from the transmission rod 574 is connected to a first limiting rod 582, and the end face of the other transmission rod 574 away from the first limiting rod 582 is connected to a second limiting rod 583, the first limiting rod 582 and the second limiting rod 583 have the same diameter, and the inner circumference of the sliding ring 58 is provided with a sliding groove 584 for the first limiting rod 582 and the second limiting rod 583 to slide, and the sliding groove 584 is arranged around the circumference of the sliding ring 58.

[0035] During the lifting process of the transmission rod 574, the first gear ring rolls on the rack 577, the rotation of the first rack 577 drives the connecting block 578 to rotate, the connecting block 578 drives the second gear 579 to rotate, the second gear 579 drives the end gear ring 581 to rotate, the end gear ring 581 drives the sliding ring 58 to rotate, the sliding ring 58 rotates through the first limit rod 582 and the second limit rod 583, so that the sliding ring 58 can rotate simultaneously during the lifting and lowering, further increasing the shaking frequency of the secondary dust bag 56.

[0036] The outer circumferential surface of the sliding ring 58 is connected to multiple arc plates 7, which are evenly distributed around the circumference of the sliding ring 58, and adjacent arc plates 7 are connected to each other; when the sliding ring 58 rotates, the arc plates 7 push the secondary dust removal bag 56, and the arc plates 7 are used to further increase the shaking frequency of the secondary dust removal bag 56.

[0037] The inner circumference of the sliding ring 58 is connected with a retaining ring 8 , which is located above the second gear ring. The retaining ring 8 is used to protect the second gear 579 .

[0038] The implementation principle of an efficient and energy-saving spray drying device in the embodiment of the present application is as follows: when the spray drying device needs to dry the slurry, the hot air heating mechanism 62 blows hot air into the air inlet chamber 11 through the air inlet pipe 13, and the air inlet chamber 11 is filled with hot air. The hot air in the air inlet chamber 11 is then discharged into the main tower 1 through the space between the inner wall of the air outlet chamber 12 and the outer wall of the installation bin 14, so that the main tower 1 is filled with hot air. The liquid pump 65 extracts the liquid in the barrel 64 through the liquid inlet pipe 611, and the liquid enters the high-speed centrifugal atomizer 61. The high-speed centrifugal atomizer 61 atomizes the liquid and throws it out. The hot air dries the atomized liquid. The dried material enters the discharge pipe 15 under the traction of the wind force of the fan 63, and the material enters the discharge pipe 15 through the discharge pipe 15. The material enters the feed pipe 16, and then enters the dust collector 5. After being filtered by the dust collector 5, the material falls into the receiving bin 66. The air is then discharged to the exhaust pipe 17 through the outlet pipe 501, and finally discharged through the fan 63, thus completing the atomization drying of the liquid feed; for the material adhering to the inner wall of the main tower 1, the drive mechanism 4 drives the scraper 2 to move along the track 3, and the scraper 2 scrapes off the material adhering to the inner wall of the main tower 1. The material falls to the bottom of the main tower 1 and is sucked away together by the fan 63, so there is no need to stop the machine to scrape off the material on the inner wall of the main tower 1, so that the spray drying equipment can continue to dry, thereby improving the drying efficiency of the spray drying equipment.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency and energy-saving spray drying equipment, characterized in that: The invention comprises a main tower (1), a scraper (2), a track (3), a driving mechanism (4) and a high-speed centrifugal atomizer (61); the high-speed centrifugal atomizer (61) is installed on the top of the main tower (1) and extends into the main tower (1); the track (3) is installed on the inner wall of the main tower (1), and the track (3) is spirally arranged along the circumference of the inner wall of the main tower (1); the scraper (2) is slidably connected to the track (3), and one side of the scraper (2) is in contact with the inner wall of the main tower (1); the driving mechanism (4) is installed on the inner top surface of the top of the main tower (1), and the driving mechanism (4) is used to drive the scraper (2) to move along the track (3).

2. The high-efficiency and energy-saving spray drying equipment according to claim 1, characterized in that: The scraper (2) comprises a plate body (21), a scraper strip (22) and a roller (23); a side surface of the plate body (21) is provided with a placement groove (211); the roller (23) is rotatably connected to the two side walls of the placement groove (211); the roller (23) rolls on the side of the track (3) away from the inner wall of the main tower (1); a connecting rod (212) is connected to the side of the plate body (21) close to the track (3); the connecting rod (212) is located below the roller (23); the end of the connecting rod (212) is connected to a positioning rod (213); The end of the positioning rod (213) is rotatably connected to a rotating tube (214); a positioning groove (31) is provided on the outer peripheral surface of the lower part of the track (3); the positioning groove (31) is arranged along the spiral direction of the track (3); and the rotating tube (214) rolls on the inner wall of the positioning groove (31); two scraping strips (22) are provided, and the two scraping strips (22) are connected to the side of the scraper (2) close to the track (3), one of the scraping strips (22) is located above the track (3), and the other scraping strip (22) is located below the track (3).

3. The high-efficiency and energy-saving spray drying equipment according to claim 1, characterized in that: The driving mechanism (4) comprises a driving motor (41), a rotating rod (42), a worm (43), a worm wheel (44) and a telescopic rod (45); the inner top surface of the top of the main tower (1) is connected to a mounting ring (46); the worm wheel (44) is sleeved on the outer peripheral surface of the mounting ring (46); the driving motor (41) is mounted on the outer peripheral surface of the main tower (1); one end of the rotating rod (42) is coaxially connected to the output shaft of the driving motor (41); the rotating rod (42) extends into the main tower (1); the rotating rod (43 ... 2) is located above the track (3), the top inner surface of the top of the main tower (1) is connected to a support plate (47), the rotating rod (42) is rotatably connected inside the support plate (47), one end of the worm (43) is connected to the end of the rotating rod (42) away from the driving motor (41), and the worm (43) is engaged with the worm wheel (44); one end of the telescopic rod (45) is hinged to the bottom surface of the worm wheel (44), and the other end of the telescopic rod (45) is hinged to the side of the scraper (2) away from the track (3).

4. The high-efficiency and energy-saving spray drying equipment according to claim 3 is characterized in that: The telescopic rod (45) comprises a rod body (451), a tube body (452) and an outer tube (453); one end of the rod body (451) is hinged to the side of the scraper (2) away from the track (3); the end of the rod body (451) away from the scraper (2) is integrally formed with a first piston (454); the tube body (452) is sleeved outside the rod body (451); the first piston (454) slides in the tube body (452); the inner wall of the end of the tube body (452) close to the scraper (2) is connected to a first limiting ring (455); the rod body (451) slides The outer tube (453) is sleeved outside the tube body (452), and the second piston (456) slides on the inner wall of the tube body (452). The end of the outer tube (453) away from the scraper (2) is hinged to the bottom surface of the worm gear (44), and the inner wall of the end of the outer tube (453) close to the scraper (2) is connected to a second limiting ring (457), and the tube body (452) slides on the inner wall of the second limiting ring (457).

5. The high-efficiency and energy-saving spray drying equipment according to claim 1, characterized in that: It also comprises a dust collector (5) and a fan (63), wherein the dust collector (5) is arranged on the peripheral side of the main tower (1), the top of the dust collector (5) is connected to an air outlet pipe (501), the peripheral side of the dust collector (5) is connected to a feed pipe (16), and the bottom of the dust collector (5) is connected to a receiving bin (66); the bottom of the main tower (1) is connected to a discharge pipe (15), and one end of the discharge pipe (15) away from the main tower (1) is connected to the feed pipe (16); the fan (63) is installed on the top surface of the main tower (1), the air inlet of the fan (63) is connected to an exhaust pipe (17), and one end of the exhaust pipe (17) away from the fan (63) is connected to the end of the air outlet pipe (501).

6. The high-efficiency and energy-saving spray drying equipment according to claim 5, characterized in that: The dust collector (5) comprises a top plate (51), an outer shell (52), a mesh tube (53), a support rod (54), a primary dust bag (55) and a secondary dust bag (56); the outer shell (52) is connected to the bottom surface of the top plate (51); the air outlet pipe (501) is connected to the top surface of the top plate (51); the feed pipe (16) is connected to the peripheral surface of the outer shell (52); the mesh tube (53) is connected to the bottom surface of the top plate (51) and is connected to the air outlet pipe (501); a plurality of support rods (54) are provided, and the plurality of support rods (54) are all connected to the bottom surface of the top plate (51); the plurality of support rods (54) are arranged around the outer shell (52); The mesh tube (53) is evenly distributed around the circumference; the primary dust removal bag (55) is sleeved on the plurality of support rods (54), the primary dust removal bag (55) is connected to the bottom surface of the top plate (51), and the bottom of the primary dust removal bag (55) is in communication with the outside; the secondary dust removal bag (56) is sleeved on the mesh tube (53), the top end of the secondary dust removal bag (56) is connected to the bottom surface of the top plate (51), the secondary dust removal bag (56) is located inside the primary dust removal bag (55), and the pores of the secondary dust removal bag (56) are smaller than the pores of the primary dust removal bag (55); the material collection bin (66) is detachably connected to the bottom of the outer shell (52).

7. The high-efficiency and energy-saving spray drying equipment according to claim 6, characterized in that: The bottom opening of the primary dust removal bag (55) is connected to a counterweight ring (551), and the counterweight ring (551) is located directly below the secondary dust removal bag (56).

8. The high-efficiency and energy-saving spray drying equipment according to claim 6, characterized in that: The inner wall of the top plate (51) is connected to a support plate (57), the bottom surface of the support plate (57) is rotatably connected to a fan (571), the bottom surface of the fan (571) is connected to a reciprocating screw (572), the bottom end of the reciprocating screw (572) is rotatably connected to the bottom of the network tube (53), a transmission ring (573) is sleeved on the reciprocating screw (572), and the transmission ring (573) and the reciprocating screw (572) are threadedly transmitted; the outer circumference of the transmission ring (573) is connected to two symmetrically arranged transmission rods (574), and the circumference of the network tube (53) is provided with a sliding groove (531) for the two transmission rods (574) to slide; the outer surface of the network tube (53) is provided with a sliding ring (58), and the sliding ring (58) is installed at the ends of the two transmission rods (574).

9. The high-efficiency and energy-saving spray drying equipment according to claim 8, characterized in that: The end of one of the transmission rods (574) is fixedly connected to the inner ring of a bearing (575), and the outer ring of the bearing (575) is coaxially connected to a first gear (576), the first gear (576) is located in the slide groove (531), and the inner wall of the slide groove (531) close to the first gear (576) is connected to a rack (577), and the first gear (576) is meshed with the rack (577); the outer ring end surface of the bearing (575) away from the transmission rod (574) is connected to a connecting block (578), and the outer peripheral surface of the connecting block (578) is coaxially connected to a second gear (579), and the second gear (579) is located Outside the network tube (53), the inner circumference of the sliding ring (58) is connected with an end face toothed ring (581), and the second gear (579) is meshed with the end face toothed ring (581); the end face of the connecting block (578) away from the transmission rod (574) is connected with a first limiting rod (582), and the end face of the other transmission rod (574) away from the first limiting rod (582) is connected with a second limiting rod (583); the inner circumference of the sliding ring (58) is provided with a sliding groove (584) for the first limiting rod (582) and the second limiting rod (583) to slide, and the sliding groove (584) is arranged around the circumference of the sliding ring (58).

10. The high-efficiency and energy-saving spray drying equipment according to claim 9, characterized in that: The outer circumferential surface of the sliding ring (58) is connected to a plurality of arc-shaped plates (7), the plurality of arc-shaped plates (7) are evenly distributed around the circumference of the sliding ring (58), and adjacent arc-shaped plates (7) are connected to each other.

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