A dryer for preparing organic fertilizer from domestic waste

Abstract

The present application belongs to the field of organic fertilizer preparation, and particularly relates to a dryer for preparing organic fertilizer from domestic waste, which comprises a drying roller, the front and rear ends of the drying roller are both rotationally connected with roller support seats, a driving mechanism for driving the rotation of the drying roller is connected to the drying roller, and a hot air blower for supplying hot air into the drying roller is arranged on the roller support seat at the rear end of the drying roller. A plurality of material throwing mechanisms for continuously throwing the organic fertilizer raw material to be dried in the drying roller are uniformly arranged on the inner wall of the drying roller along the circumferential direction of the drying roller, and a sticking prevention mechanism for scraping and air blowing to clean the material adhered to the inner wall of the drying roller is arranged between the adjacent two material throwing mechanisms. A crushing mechanism for crushing the thrown organic fertilizer raw material is further arranged in the drying roller. The present application can effectively reduce the caking of the domestic waste as the organic fertilizer raw material during drying, thereby improving the drying efficiency.

Description

Technical Field

[0001] This invention belongs to the field of organic fertilizer preparation, and in particular relates to a dryer for preparing organic fertilizer from household waste. Background Technology

[0002] Making organic fertilizer from municipal solid waste is a resource utilization method. It involves sorting, crushing, fermenting, and drying the organic components of municipal solid waste to transform them into organic fertilizer suitable for agricultural production. This process not only reduces the environmental pressure of landfilling but also achieves waste recycling. Drying is a key step in the preparation process, aiming to reduce the moisture content of the material and improve the stability and storage performance of the organic fertilizer.

[0003] Existing rotary drum dryers primarily dry pre-treated municipal solid waste by throwing the material into the air through internal lifting plates to ensure full contact with hot air. However, even after pre-treatment, the moisture content of the waste remains above 50%. Due to its high moisture content and viscosity, the waste easily clumps during drying, hindering the even penetration of hot air and prolonging the drying time. Furthermore, the large amount of moisture generated during drying tends to adhere to the inner wall of the drum, causing the waste material to stick and further reducing drying efficiency. These problems not only increase energy consumption but also affect the final quality and production efficiency of the organic fertilizer.

[0004] In conclusion, while rotary drum dryers play a crucial role in the drying process of organic fertilizer production from municipal solid waste, they still encounter problems such as clumping and moisture adhesion when handling high-moisture, high-viscosity materials, leading to low drying efficiency and increased energy consumption. Therefore, it is urgent to optimize the design of rotary drum dryers to improve the drying effect and enhance the overall efficiency and quality of organic fertilizer production. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a dryer for preparing organic fertilizer from household waste, thereby resolving the issues mentioned in the background section.

[0006] To achieve the above objectives, this application provides the following technical solution: The present invention provides a dryer for preparing organic fertilizer from household waste, comprising a drying drum. Both ends of the drying drum are rotatably connected to drum support seats. A drive mechanism for rotating the drying drum is connected to the drying drum. A hot air blower for supplying air to the interior of the drying drum is installed on the drum support seat at the rear end of the drying drum. Multiple lifting mechanisms are evenly arranged along the circumference of the inner wall of the drying drum for continuously scattering the organic fertilizer raw materials to be dried inside. An anti-sticking mechanism is also provided between adjacent lifting mechanisms on the inner wall of the drying drum for scraping and air blowing to clean materials adhering to the inner wall of the drying drum. A crushing mechanism for crushing the scattered organic fertilizer raw materials is also provided inside the drying drum. A transmission mechanism is connected to the crushing mechanism, lifting mechanism, anti-sticking mechanism, and drying drum. The transmission mechanism includes two partition plates fixedly installed at both ends inside the drying drum. A transmission shaft is rotatably installed in the middle of the partition plates, and a transmission gear set is connected to the transmission shaft.

[0007] According to an advantageous embodiment, the drive mechanism includes a drive motor fixedly mounted on the ground, a gear is fixedly connected to the output shaft of the drive motor, and an outer toothed ring that meshes with the gear is fixedly fitted onto the drying drum.

[0008] According to an advantageous embodiment, the lifting mechanism includes a mounting base fixedly connected to the inner wall of the drying drum. A sliding groove is provided on the mounting base, and multiple buffer springs are fixedly installed within the sliding groove. A sliding plate is fixedly connected to one end of each buffer spring near the end of the sliding groove. A lifting plate is fixedly connected to the sliding plate, and a sliding cavity is provided inside the lifting plate. An impact plate is slidably installed within the sliding cavity. Multiple spring telescopic columns are fixedly installed between the side of the impact plate near the sliding plate and the corresponding side wall of the sliding cavity. Multiple active impact blocks are fixedly installed on the side wall of the impact plate perpendicular to the corresponding sliding plate, and multiple passive impact blocks are fixedly installed on the side wall of the sliding cavity. The passive impact blocks correspond one-to-one with the active impact blocks.

[0009] According to an advantageous embodiment, a drive disc is fixedly mounted on the end of the drive shaft away from the adjacent roller support. The outer ring of the drive disc is composed of two arc surfaces connected end to end, and one of the arc surfaces forms a cross-sectional structure at the end-to-end connection. Sliding holes communicating with corresponding sliding cavities are provided on both the front and rear sides of the lifting plate. Ear plates are slidably mounted in the sliding holes. The ear plates are fixedly connected to the corresponding impact plates. A ball bearing is rotatably mounted on the side of the ear plate facing the drive disc via a ball seat. The ball bearing rolls and abuts against the outer ring surface of the drive disc.

[0010] According to an advantageous embodiment, the anti-sticking mechanism includes a scraper seat that is U-shaped and slidably disposed on the inner wall of the drying drum. A plurality of hot air nozzles are fixedly disposed on the concave surface of the scraper seat. The plurality of hot air nozzles are inclined toward the length direction of the inner wall of the drying drum. A connecting sleeve is fixedly disposed on the side of the two isolation plates that are close to each other. The connecting sleeve is coaxially sleeved on the outer ring of the corresponding drive shaft. A plurality of rotating rings are rotatably disposed on the surface of the connecting sleeve, and a connecting plate is fixedly disposed on the outer wall of the rotating ring. The two corresponding connecting plates are fixedly connected to the same scraper seat.

[0011] According to an advantageous embodiment, air outlet channels and air inlet channels communicating with the interior of the drying drum are respectively provided on the drum support seats at the front and rear ends of the drying drum. An exhaust pipe is fixedly provided at the outer port of the air outlet channel. An exhaust hole is provided on the isolation plate at the front end of the drying drum. The hot air blower is fixedly provided at the outer port of the air inlet channel. A hot air conveying chamber is provided inside the connecting sleeve. A hot air conveying channel is provided between the rotating ring, the rear connecting plate and the scraper seat in the same anti-sticking mechanism. A plurality of arc-shaped hot air connecting holes are provided on the inner wall of the hot air conveying chamber. The hot air connecting holes communicate with the corresponding hot air conveying channels. A plurality of hot air injection holes communicating with the hot air conveying chamber are provided on the isolation plate at the rear end of the drying drum.

[0012] According to an advantageous embodiment, the crushing mechanism includes a rotating shaft rotatably disposed inside the drying drum, and a plurality of crushing rods are uniformly fixedly disposed on the surface of the rotating shaft along its length direction. The two ends of the rotating shaft are respectively fixedly connected to the ends of two drive shafts that are close to each other.

[0013] According to an advantageous embodiment, the transmission gear set includes two meshing gears, both gears being rotatably connected to a corresponding drum support via a connecting shaft. The connecting shaft on one of the gears is fixedly connected to one end of an adjacent transmission shaft. An inner gear ring is fixedly provided on the inner wall of the drying drum, and the inner gear ring meshes with the corresponding gear.

[0014] According to an advantageous embodiment, the upper ends of both roller supports are fixedly connected to a feeding hopper with open top and bottom via a connecting seat, and a downwardly inclined discharge guide plate is fixedly provided on both roller supports and below the drying roller.

[0015] According to an advantageous embodiment, the outer wall of the drying drum is provided with an inlet and outlet extending along its length, and the inlet and outlet are equipped with a slidable and openable sealing door.

[0016] Compared with existing technologies, the dryer for preparing organic fertilizer from household waste provided in this invention has the following beneficial effects: 1. By setting a lifting mechanism inside the drying drum, the lifting plates, through the vibration of the impact plates during rotation, can effectively reduce the phenomenon of waste materials adhering to the surface of the lifting plates due to high moisture and high viscosity. At the same time, the vibration of the lifting plates causes the material to slide off the surface of the lifting plates, increasing the contact area between the material and the hot air, thereby improving drying efficiency and reducing the occurrence of agglomeration.

[0017] 2. This invention incorporates an anti-sticking mechanism on the inner wall of the drying drum, which works in conjunction with a hot air blower. The hot air blower delivers high-temperature gas into the drum through an air inlet channel, ultimately ejecting it through hot air nozzles. As the scraper seat rotates with the drying drum, it slides relative to the drum. This, combined with the hot air nozzles, effectively scrapes away and disperses waste materials adhering to the inner wall of the drum. This further improves the dryness of the drum's inner wall, reduces the risk of material adhesion, and thus enhances the drying effect.

[0018] 3. This invention incorporates a crushing mechanism inside the drum. The rotating shaft can rotate relative to the drying drum, causing both the rotating shaft and the crushing rod to rotate. This process breaks down potentially clump-like waste materials scattered in the air. The crushed material is then more easily exposed to hot air, accelerating the drying process and further improving drying efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention from an external first-view perspective.

[0020] Figure 2 This is a side view, cross-sectional view, and three-dimensional structural diagram of the present invention.

[0021] Figure 3 This is a side sectional view of the drying drum in this invention.

[0022] Figure 4 This is a partial cross-sectional perspective view of the drying drum in this invention.

[0023] Figure 5 This is a schematic diagram showing the relative positions of the lifting mechanism, the anti-sticking mechanism, and the crushing mechanism in this invention.

[0024] Figure 6 This is a front sectional planar structural diagram of the present invention.

[0025] Figure 7 for Figure 6 Enlarged structural diagram of part A in the middle.

[0026] Figure 8 This is a front sectional view of the material lifting mechanism in this invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the anti-sticking mechanism in this invention.

[0028] Figure 10 This is an exploded three-dimensional structural diagram showing the rear connecting sleeve and the adjacent isolation plate in this invention.

[0029] Figure 11 This is a schematic diagram of the relative position structure between the ball bearings and the drive disk in this invention.

[0030] Figure 12 This is a schematic diagram of the motion trajectory of the ball bearings and the drive disc in this invention.

[0031] Figure 13 This is a schematic diagram showing the direction of hot air flow inside the drying drum in this invention.

[0032] The attached figures are labeled as follows: 1. Drying drum; 2. Drum support base; 3. Drive mechanism; 31. Drive motor; 32. Gear 1; 33. External gear ring of the drum; 4. Hot air blower; 5. Lifting mechanism; 51. Mounting base; 52. Buffer spring; 53. Slide plate; 54. Lifting plate; 541. Sliding cavity; 55. Impact plate; 56. Spring telescopic column; 57. Active impact block; 58. Passive impact block; 59. Drive disc; 510. Ear plate; 511. Ball bearing; 6. Anti-sticking mechanism; 61. Scraper seat; 62. Hot air nozzle; 63. Connecting sleeve; 64. Rotating ring; 65. Connecting plate; 7. Crushing mechanism; 71. Rotating shaft; 72. Crushing rod; 8. Transmission mechanism; 81. Isolation plate; 82. Transmission shaft; 83. Transmission gear set; 831. Gear II; 832. Internal gear ring of drum; 9. Air outlet channel; 10. Air inlet channel; 11. Exhaust pipe; 12. Hot air conveying chamber; 13. Hot air conveying channel; 14. Hot air connecting hole; 15. Hot air injection hole; 16. Feed hopper; 17. Discharge guide plate. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 - Appendix Figure 13 This application will now be described in further detail.

[0034] Please refer to the following: Figure 1 and Figure 2A dryer for producing organic fertilizer from household waste is disclosed. This dryer is used to dry household waste that has been sorted, crushed, and fermented. The dryer includes a drying drum 1, with drum support seats 2 rotatably connected to both ends of the drum 1. A drive mechanism 3 is connected to the drying drum 1 to drive its rotation. A hot air blower 4 for supplying air into the drying drum 1 is installed on the drum support seat 2 at the rear end of the drying drum 1. Both drum support seats 2 are fixedly connected to open feed hoppers 16 via connecting seats at their upper ends. Inclined downward discharge guide plates 17 are fixedly installed on both drum support seats 2 below the drying drum 1. Inlet and outlet ports extending along the length of the drying drum 1 are provided on its outer wall, and the inlet and outlet ports are equipped with slidable, sealing doors.

[0035] See Figure 1 The drive mechanism 3 includes a drive motor 31 fixedly installed on the ground. A gear 32 is fixedly connected to the output shaft of the drive motor 31, and an outer toothed ring 33 that meshes with the gear 32 is fixedly fitted on the drying drum 1.

[0036] In actual operation, after the inlet and outlet of the drying drum 1 are facing upwards and aligned with the hopper 16, the sealing door is opened. The domestic waste material for making organic fertilizer is fed into the hopper 16 by manual or external feeding mechanism. Then the waste material enters the interior of the drying drum 1 along the hopper 16. Then the sealing door is closed. The drying drum 1 is driven to rotate by the drive mechanism 3 and the hot air blower 4 continuously sends gas of a certain temperature into the drying drum 1 to dry the waste material. After drying, the inlet and outlet of the drying drum 1 are turned downwards. At this time, most of the waste material accumulates at the bottom of the drying drum 1. Then the sealing door is opened, so that the dried waste material falls onto the discharge guide plate 17 for collection. If there is residual material, manual assistance can be used for discharge.

[0037] See Figure 5 , Figure 6 and Figure 7 The drying drum 1 is equipped with a transmission mechanism 8. The transmission mechanism 8 includes two partition plates 81 fixedly installed at the front and rear ends inside the drying drum 1. A transmission shaft 82 is rotatably installed in the middle of the partition plates 81, and a transmission gear set 83 is connected to the transmission shaft 82. The transmission gear set 83 includes two meshing gears 831. Both gears 831 are rotatably connected to the corresponding drum support 2 through connecting shafts. The connecting shaft on one of the gears 831 is fixedly connected to the adjacent transmission shaft 82. An inner gear ring 832 is fixedly installed on the inner wall of the drying drum 1, and the inner gear ring 832 meshes with the corresponding gear 831.

[0038] See Figure 1 , Figure 2 , Figure 3 and Figure 8 The inner wall of the drying drum 1 is uniformly equipped with multiple lifting mechanisms 5 along its circumference for continuously throwing the waste material to be dried inside. Each lifting mechanism 5 includes a mounting base 51 fixedly connected to the inner wall of the drying drum 1. A sliding groove is provided on the mounting base 51, and multiple buffer springs 52 are fixedly installed within the groove. A sliding plate 53 is fixedly connected to one end of each buffer spring 52 near the end of the sliding groove. A lifting plate 54 is fixedly connected to the sliding plate 53. A sliding cavity 541 is provided inside the lifting plate 54, and an impact plate 55 is slidably installed within the sliding cavity 541. Multiple spring-loaded telescopic columns 56 are fixedly installed between the side of the impact plate 55 near the sliding plate 53 and the corresponding side wall of the sliding cavity 541. Multiple active impact blocks 57 are fixedly installed on the side wall of the impact plate 55 perpendicular to the corresponding sliding plate 53, and multiple passive impact blocks 58 are fixedly installed on the side wall of the sliding cavity 541. The passive impact blocks 58 correspond one-to-one with the active impact blocks 57. The buffer springs 52 can reduce the vibration impact on the drying drum 1 during vibration.

[0039] See Figure 6 , Figure 7 , Figure 8 , Figure 11 and Figure 12 A drive disc 59 is fixedly installed at one end of the drive shaft 82 away from the adjacent roller support 2. The outer ring of the drive disc 59 is composed of two arc surfaces connected end to end, and one of the arc surfaces forms a cross-sectional structure at the end-to-end connection. The front and rear sides of the lifting plate 54 are provided with sliding holes that communicate with the corresponding sliding cavity 541. Ear plates 510 are slidably installed in the sliding holes. The ear plates 510 are fixedly connected to the corresponding impact plate 55. The side of the ear plate 510 facing the drive disc 59 is provided with a ball bearing 511 that is rotatably installed through a ball seat. The ball bearing 511 rolls and abuts against the outer ring surface of the drive disc 59.

[0040] In actual operation, when the drying drum 1 is continuously driven to rotate by the external drive motor 31, the transmission shaft 82 rotates in the opposite direction to the drying drum 1 under the action of the transmission gear set 83. This allows the drive disc 59 on the transmission shaft 82 to rotate, while the balls 511 on the outer wall of the drive disc 59 roll along its outer wall. Figure 12As shown. When the ball bearing 511 moves along the outer wall of the drive disc 59 to the cross section on the outer wall of the drive disc 59, under the reset action of the spring telescopic column 56, the impact plate 55 will suddenly slide in the sliding cavity 541. The active impact block 57 on the impact plate 55 will collide with the corresponding passive impact block 58 on the inner wall of the sliding cavity 541, causing the lifting plate 54 to vibrate. Especially when the lifting plate 54 rotates to the middle and upper part of the drying drum 1, the vibration of the lifting plate 54 will cause the waste material on the lifting plate 54 to slide off the surface of the lifting plate 54, which can greatly reduce the risk of the waste material on the surface of the lifting plate 54 sticking to its surface due to the high moisture content in the early stage of drying.

[0041] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 9 The inner wall of the drying drum 1 is also provided with an anti-sticking mechanism 6 between two adjacent mounting bases 51 for scraping off and cleaning the material adhering to the inner wall of the drying drum 1 by air blowing. The anti-sticking mechanism 6 includes a scraper seat 61 that is U-shaped and slidably disposed on the inner wall of the drying drum 1. Multiple hot air nozzles 62 are fixedly disposed on the concave surface of the scraper seat 61. The multiple hot air nozzles 62 are all inclined towards the length direction of the inner wall of the drying drum 1. A connecting sleeve 63 is fixedly disposed on the side of the two isolation plates 81 that are close to each other. The connecting sleeve 63 is coaxially sleeved on the outer ring of the corresponding drive shaft 82. Multiple rotating rings 64 that are evenly distributed front and back are rotatably disposed on the surface of the connecting sleeve 63. A connecting plate 65 is fixedly disposed on the outer wall of the rotating ring 64. The two corresponding connecting plates 65 are fixedly connected to the same scraper seat 61.

[0042] See Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 9 and Figure 10 The drum support seats 2 located at the front and rear ends of the drying drum 1 are respectively provided with an air outlet channel 9 and an air inlet channel 10 that communicate with the inside of the drying drum 1. An exhaust pipe 11 is fixedly installed at the outer port of the air outlet channel 9. An exhaust hole is provided on the isolation plate 81 located at the front end of the drying drum 1. A hot air blower 4 is fixedly installed at the outer port of the air inlet channel 10. A hot air conveying chamber 12 is provided inside the connecting sleeve 63 located at the rear end of the drying drum 1. A hot air conveying channel 13 is provided between the rotating ring 64, the rear connecting plate 65 and the scraper seat 61 in the same anti-sticking mechanism 6. A plurality of arc-shaped hot air connecting holes 14 are provided on the inner wall of the hot air conveying chamber 12. The hot air connecting holes 14 communicate with the corresponding hot air conveying channels 13. A plurality of hot air injection holes 15 communicating with the hot air conveying chamber 12 are provided on the isolation plate 81 located at the rear end of the drying drum 1.

[0043] In actual operation, the exhaust pipe 11 is connected to an external gas purification device, intermittently extracting odorous gases from inside the drying drum 1. The scraper seat 61 slides around the drying drum 1 between two adjacent mounting bases 51, and the scraper seat 61 itself rotates with the drying drum 1. When the scraper seat 61 rotates downwards from the highest position with the drying drum 1, the scraper seat 61 will rotate under the action of gravity, allowing the scraper seat 61 to scrape up any garbage materials that may be adhering to the inner wall of the drying drum 1. During this process, the external hot air blower 4 continuously sends high-temperature gas into the rear end of the drying drum 1 through the air intake channel 10. Then, the high-temperature gas is injected into the hot air delivery chamber 12 of the connecting sleeve 63 through the hot air injection hole 15 on the isolation plate 81 at this position. Finally, it passes through the hot air delivery channel 13 between the rotating ring 64, the connecting plate 65, and the scraper seat 61, and enters the hot air nozzle 62, acting on the inner wall of the drying drum 1. Figure 13 As shown. It disperses waste material that may adhere to the inner wall of the drying drum 1 and is located between two adjacent mounting bases 51, and improves the dryness of the inner wall of the drying drum 1, reducing the risk of waste material adhesion.

[0044] See Figure 2 and Figure 4 The crushing mechanism 7 includes a rotating shaft 71 rotatably disposed inside the drying drum 1. Multiple crushing rods 72 are uniformly fixedly disposed on the surface of the rotating shaft 71 along its length. Both ends of the rotating shaft 71 are fixedly connected to the adjacent ends of two drive shafts 82. When the drive shafts 82 rotate in the opposite direction to the drying drum 1, they synchronously drive the rotating shaft 71 to rotate, thereby causing the crushing rods 72 on its surface to rotate and crush and disperse any potentially clump-forming waste material scattered in the air. This facilitates contact between the waste material and hot air, accelerating the drying process.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A dryer for preparing organic fertilizer from household waste, characterized in that: It includes a drying drum, with drum support seats rotatably connected to both the front and rear ends of the drying drum. A drive mechanism for driving the drying drum to rotate is connected to the drying drum, and a hot air fan for supplying air to the inside of the drying drum is provided on the drum support seat at the rear end of the drying drum. The inner wall of the drying drum is uniformly equipped with multiple lifting mechanisms along its circumference for continuously sprinkling the organic fertilizer raw materials to be dried inside. The inner wall of the drying drum is also equipped with an anti-sticking mechanism between two adjacent lifting mechanisms for scraping and air blowing to clean the material adhering to the inner wall of the drying drum. The drying drum is also equipped with a crushing mechanism to break up the scattered organic fertilizer raw materials. The crushing mechanism, lifting mechanism, anti-sticking mechanism, and drying drum are all connected by a transmission mechanism. The transmission mechanism includes two partition plates fixedly installed at the front and rear ends inside the drying drum. A transmission shaft is rotatably installed in the middle of the partition plates, and a transmission gear set is connected to the transmission shaft. The transmission shaft rotates in the opposite direction to the drying drum under the action of the transmission gear set. The lifting mechanism includes a mounting base fixedly connected to the inner wall of the drying drum. The mounting base has a sliding groove, and multiple buffer springs are fixedly installed in the sliding groove. The ends of the multiple buffer springs near the end of the sliding groove are fixedly connected to a sliding plate. A lifting plate is fixedly connected to the sliding plate. A sliding cavity is opened inside the lifting plate. An impact plate is slidably installed in the sliding cavity. Multiple spring telescopic columns are fixedly installed between the side of the impact plate near the sliding plate and the corresponding side wall of the sliding cavity. Multiple active impact blocks are fixedly installed on the side wall of the impact plate that is perpendicular to the corresponding sliding plate. Multiple passive impact blocks are fixedly installed on the side wall of the sliding cavity. The passive impact blocks correspond one-to-one with the active impact blocks. A drive disc is fixedly installed at one end of the drive shaft away from the adjacent roller support. The outer ring of the drive disc is composed of two arc surfaces connected end to end, and one of the arc surfaces forms a cross-sectional structure at the end-to-end connection. The lifting plate achieves vibration by cooperating with the drive disc through the impact plate. The anti-sticking mechanism includes a scraper seat that is U-shaped and slidably disposed on the inner wall of the drying drum. Multiple hot air nozzles are fixedly disposed on the concave surface of the scraper seat. The multiple hot air nozzles are inclined towards the length direction of the inner wall of the drying drum. Connecting sleeves are fixedly disposed on the side of the two isolation plates that are close to each other. The connecting sleeves are coaxially sleeved on the outer ring of the corresponding drive shaft. Multiple rotating rings that are evenly distributed front and back are rotatably disposed on the surface of the connecting sleeves. Connecting plates are fixedly disposed on the outer wall of the rotating rings. The two corresponding connecting plates are fixedly connected to the same scraper seat.

2. A dryer for preparing organic fertilizer from household waste according to claim 1, characterized in that, The drive mechanism includes a drive motor fixedly mounted on the ground, a gear is fixedly connected to the output shaft of the drive motor, and an outer toothed ring that meshes with the gear is fixedly fitted on the drying drum.

3. A dryer for preparing organic fertilizer from household waste according to claim 1, characterized in that, The lifting plate has sliding holes on both the front and rear sides that communicate with the corresponding sliding cavities. Ear plates are slidably arranged in the sliding holes. The ear plates are fixedly connected to the corresponding impact plates. The side of the ear plates facing the drive disk is provided with a ball bearing that is rotatably arranged through a ball seat. The ball bearing rolls and abuts against the outer ring surface of the drive disk.

4. A dryer for preparing organic fertilizer from household waste according to claim 1, characterized in that, Air outlet and air inlet channels, which communicate with the interior of the drying drum, are respectively provided on the drum support seats at the front and rear ends of the drying drum. An exhaust pipe is fixedly installed at the outer port of the air outlet channel. An exhaust hole is provided on the isolation plate at the front end of the drying drum. The hot air blower is fixedly installed at the outer port of the air inlet channel. A hot air conveying chamber is provided inside the connecting sleeve. A hot air conveying channel is provided between the rotating ring, the rear connecting plate and the scraper seat in the same anti-sticking mechanism. Multiple arc-shaped hot air connecting holes are provided on the inner wall of the hot air conveying chamber. The hot air connecting holes communicate with the corresponding hot air conveying channels. Multiple hot air injection holes communicating with the hot air conveying chamber are provided on the isolation plate at the rear end of the drying drum.

5. A dryer for preparing organic fertilizer from household waste according to claim 1, characterized in that, The crushing mechanism includes a rotating shaft rotatably disposed inside the drying drum. Multiple crushing rods are uniformly fixedly disposed on the surface of the rotating shaft along its length. The two ends of the rotating shaft are respectively fixedly connected to the ends of two transmission shafts that are close to each other.

6. A dryer for preparing organic fertilizer from household waste according to claim 5, characterized in that, The transmission gear set includes two meshing gears, both of which are rotatably connected to the corresponding drum support via connecting shafts. One of the connecting shafts on one of the gears is fixedly connected to one end of an adjacent transmission shaft. An inner gear ring is fixedly installed on the inner wall of the drying drum, and the inner gear ring meshes with the corresponding gear.

7. A dryer for preparing organic fertilizer from household waste according to claim 1, characterized in that, Both of the roller support seats have an open hopper at the top and bottom fixedly connected to the upper end via a connecting seat, and both roller support seats are fixedly provided with a downwardly inclined discharge guide plate located below the drying roller.

8. A dryer for preparing organic fertilizer from household waste according to claim 1, characterized in that, The outer wall of the drying drum is provided with an inlet and outlet that extend along its length, and the inlet and outlet are equipped with a slidable and openable sealing door.

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