Granulation device for sludge recovery

Abstract

The invention discloses a granulation device for sludge recovery, which comprises a support frame, a granulation unit and a sludge recovery unit, the crushing unit comprises a coarse crushing assembly which is arranged above the feeding hole of the granulation unit and is used for crushing massive sludge, and a fine crushing assembly which is arranged below the coarse crushing assembly and is used for kneading and crushing the sludge subjected to coarse crushing; and the driving assembly is arranged at one end of the coarse crushing assembly and is used for synchronously driving the coarse crushing assembly, the fine crushing assembly and the granulation unit to respectively perform coarse crushing, fine crushing and granulation operations. After large sludge blocks are crushed into small sludge blocks through the coarse crushing assembly, the small sludge blocks fall onto the fine crushing assembly, and the fine crushing assembly synchronously rubs the small sludge blocks, so that the interiors of the small sludge blocks with non-uniform density are uniformly rubbed into smaller sludge, and then the smaller sludge blocks are discharged into the granulation unit from the fine crushing assembly; the granulation unit is used for extruding and granulating the crushed sludge, the internal density of the crushed sludge is uniform, and the subsequent sludge granulation quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sludge recovery, in particular to a granulation device for sludge recovery. Background Art

[0002] The sludge after urban domestic sewage treatment generally has a water content of about 80%. It is rich in nutrients such as organic matter, and also contains a certain amount of heavy metals and harmful substances such as viruses, pathogens, and parasite eggs. Improper sludge disposal will cause serious secondary environmental pollution. At present, the main destination of sludge from sewage plants in my country is landfills. With the continuous improvement of sewage treatment rates, the large amount of sludge output has brought a huge burden to landfills, shortening the service life of landfills, and further affecting urban waste treatment. As a result, suitable landfill sites are becoming increasingly limited. For this reason, more and more sludge is being used for granulation and recycling. The granulated sludge can be used as fertilizer and has very high utilization potential. Before granulation, in order to ensure that large pieces of sludge are crushed to the size required for granulation, the crushed sludge is granulated in two separate devices. That is, the large pieces of sludge are first crushed by a crusher, and the crushed sludge is repeatedly poured into the crusher for repeated crushing. When the size of the crushed sludge meets the granulation requirements, the sludge after multiple crushing is transferred to the granulator for granulation. The operation process is complicated, and the crushing and granulation cannot be put into one device for synchronous operation. The overall work efficiency is low, and even after multiple rounds of crushing, the density distribution inside the crushed sludge is still uneven, which causes the granules produced to be loose during subsequent granulation, affecting the quality of granulation.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Summary of the Invention

[0004] The object of the present invention is to provide a granulation device for sludge recovery, so as to solve the problem that the sludge granulation process in the prior art proposed in the above background technology needs to be divided into two devices for separate crushing and granulation, the operation process is complicated, the work efficiency is low, and the density distribution inside the crushed sludge is still uneven, which makes the produced granules easy to become loose, affecting the granulation quality.

[0005] To achieve the above object, the present invention provides the following technical solutions: A granulation device for sludge recovery, comprising a support frame and: The granulation unit is installed at the upper end of the support frame and is used to granulate the crushed sludge; The crushing unit includes a coarse crushing component located above the feed inlet of the granulation unit for crushing large sludge, a fine crushing component located below the coarse crushing component for kneading and crushing the coarsely crushed sludge, and a driving component located at one end of the coarse crushing component for synchronously driving the coarse crushing component, the fine crushing component, and the granulation unit to perform coarse crushing, fine crushing, and granulation operations respectively.

[0006] Furthermore, the coarse crushing assembly includes: A material guide frame is installed at the upper end of the support frame and is located outside the granulation unit; A first roller is connected to one end of the driving assembly and is located inside the material guide frame. First crushing teeth for crushing large sludge are distributed on the outer side of the first roller; The second roller is connected to one end of the driving assembly and is located on one side of the first roller. Second crushing teeth for cooperating with the first crushing teeth to crush large sludge are evenly distributed on the outer side of the second roller.

[0007] Furthermore, the coarse crushing assembly further comprises: The guide blocks are provided in two groups opposite to each other and fixedly connected to the inner wall of the guide frame. The upper ends of the guide blocks are inclined and used to guide large sludge to the first crushing teeth and the second crushing teeth for crushing; The cleaning port is provided on the side of the guide block and is used for cleaning the sludge adhered to the outside of the first crushing teeth and the second crushing teeth.

[0008] Furthermore, the fine crushing component includes: A fixed block, fixedly connected to the middle of the material guide frame and located between the first roller and the second roller; The cleaning teeth are provided in multiple groups at equal intervals and are fixedly connected to both sides of the fixed block, and are used to cooperate with the cleaning port to clean the sludge adhered to the outside of the first crushing teeth and the second crushing teeth.

[0009] Furthermore, the fine crushing component also includes: A carrying plate is provided at the upper opening of the granulation unit; Crushing openings are evenly arranged throughout the interior of the bearing plate and are used for fine crushing of the sludge after being crushed by the coarse crushing assembly.

[0010] Furthermore, a first guide groove is provided inside the fixing block; A slider is slidably inserted into the first guide groove; The lower end of the slider is fixedly connected to a pendulum block in contact with the upper end of the carrying plate; Both ends of the swing block in the moving direction are provided with downwardly inclined ejection slopes for kneading the sludge that has fallen onto the carrying plate after coarse crushing and ejecting it from the crushing opening.

[0011] Furthermore, a second guide groove is provided inside the fixing block and in the middle of the upper end of the first guide groove; A guide block is slidably inserted in the second guide groove, and a reciprocating threaded hole is provided in the guide block; A reciprocating screw, threadedly connected to the inside of the reciprocating threaded hole, is used to drive the guide block to reciprocate; A transmission wheel, fixedly sleeved on the outside of the reciprocating screw and located at one end of the fixed block; A belt for driving the transmission wheel to rotate is sleeved on the outer side of the transmission wheel, and the other end of the belt is sleeved on the outer side of the first rotating roller.

[0012] Furthermore, the granulation unit comprises: An extrusion tube is installed on the upper end of the support frame; The spiral pusher is rotatably mounted on one end of the driving assembly and is located inside the extrusion pipe, and is used to extrude the sludge that falls into the extrusion pipe after being crushed by the fine crushing assembly along the extrusion pipe; A shrink tube is connected to the discharge end of the extrusion tube through a flange, and the inner diameter of the shrink tube gradually decreases along the extrusion direction of the sludge, and is used to compact the sludge extruded by the spiral pusher; The extrusion die is installed at the discharge end of the shrink tube. A plurality of granulation ports are evenly distributed inside the extrusion die for granulating the extruded sludge.

[0013] Furthermore, the driving component includes: A drive motor is mounted on the upper end of the support frame and located on one side of the coarse crushing assembly; The main shaft is connected to the driving end of the driving motor. The outer end of the main shaft opposite to the driving motor is fixedly connected to one end of the spiral pusher paddle to drive the spiral pusher paddle to rotate.

[0014] Furthermore, the driving assembly further includes: A first gear is fixedly sleeved on the outside of the main shaft and located between the drive motor and the spiral pusher paddle; A speed-increasing gear is rotatably connected to one side of the material guide frame, and the speed-increasing gear is engaged with the first gear; a second gear, fixedly connected to one end of the second rotating roller, the second gear being engaged with the speed-increasing gear; The third gear is fixedly connected to one end of the first roller, and the third gear is engaged with the second gear to drive the first roller to rotate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention places large pieces of sludge into the crushing unit, and the driving component synchronously drives the coarse crushing component, the fine crushing component, and the granulating unit to perform crushing and granulation operations, wherein the coarse crushing component crushes the large pieces of sludge into small pieces, and the small pieces of sludge fall onto the fine crushing component, and the fine crushing component synchronously kneads the small pieces of sludge, so that the small pieces of sludge with uneven density are evenly kneaded into smaller pieces, and then discharged from the fine crushing component into the granulating unit, and the granulating unit extrude and granulate the crushed sludge, thereby realizing that the same power source can be used on the same equipment to crush and granulate the sludge, ensuring that the internal density of the crushed sludge is uniform, and improving the subsequent sludge granulation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the crushing unit structure of the present invention; Figure 3 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 4 This is a diagram showing the coordination relationship between the granulation unit and the crushing unit of the present invention; Figure 5 This is a diagram showing the coordination relationship between the coarse crushing unit and the fine crushing unit of the present invention; Figure 6 Schematic diagram of the internal structure of the coarse crushing unit of the present invention; Figure 7 This is a schematic diagram of the internal structure of the fine crushing component of the present invention; Figure 8 This is a diagram showing the coordination between the pendulum block and the load-bearing plate of the present invention.

[0017] Reference numerals: 100, support frame; 1, granulation unit; 11, extrusion pipe; 12, spiral push paddle; 13, shrink tube; 131, flange; 14, extrusion die; 141, granulation port; 2, crushing unit; 21, fine crushing assembly; 211, fixed block; 212, cleaning tooth; 213, first guide groove; 2131, second guide groove; 214, guide block; 2141, reciprocating threaded hole; 215, slider; 216, swing block; 2161, ejection slope; 217, bearing plate; 2 171. Crushing port; 218. Reciprocating screw; 2181. Drive wheel; 2182. Belt; 22. Coarse crushing assembly; 221. Guide frame; 2211. Guide block; 2212. Cleaning port; 222. First roller; 2221. First crushing tooth; 223. Second roller; 2231. Second crushing tooth; 23. Drive assembly; 231. Drive motor; 232. Main shaft; 233. First gear; 234. Speed-increasing gear; 235. Second gear; 236. Third gear. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1-8 , the present invention provides a technical solution: A granulation device for sludge recovery includes a support frame 100 and further includes: The granulation unit 1 is installed at the upper end of the support frame 100 and is used to granulate the crushed sludge; The crushing unit 2 includes a coarse crushing component 22 provided above the feed port of the granulation unit 1 for crushing large sludge, a fine crushing component 21 provided below the coarse crushing component 22 for kneading and crushing the coarsely crushed sludge, and a driving component 23 provided at one end of the coarse crushing component 22 for synchronously driving the coarse crushing component 22, the fine crushing component 21 and the granulation unit 1 to perform coarse crushing, fine crushing and granulation operations respectively.

[0020] It should be noted that: when it is necessary to granulate the sludge, large pieces of sludge are placed in the crushing unit 2, and the driving component 23 synchronously drives the coarse crushing component 22, the fine crushing component 21, and the granulating unit 1 to perform crushing and granulation operations, wherein the coarse crushing component 22 crushes the large pieces of sludge into small pieces, and the small pieces of sludge fall onto the fine crushing component 21, and the fine crushing component 21 simultaneously kneads the small pieces of sludge, so that the small pieces of sludge with uneven density are evenly kneaded into smaller pieces, and then discharged from the fine crushing component 21 into the granulating unit 1, and the granulating unit 1 extrude and granulate the crushed sludge, thereby realizing the ability to use the same power source on the same equipment to crush and granulate the sludge, ensuring that the internal density of the crushed sludge is uniform, and improving the subsequent sludge granulation quality.

[0021] As an improvement, Figure 2 , Figure 4-Figure 6 As shown, the coarse crushing assembly 22 includes: The material guide frame 221 is installed at the upper end of the support frame 100 and is located outside the granulation unit 1; A first roller 222 is connected to one end of the driving assembly 23 and is located inside the material guide frame 221. First crushing teeth 2221 for crushing large sludge are distributed on the outer side of the first roller 222. The second roller 223 is connected to one end of the driving assembly 23 and is located on one side of the first roller 222. Second crushing teeth 2231 for cooperating with the first crushing teeth 2221 to crush large sludge are evenly distributed on the outer side of the second roller 223.

[0022] Furthermore, the coarse crushing assembly 22 further includes: The guide blocks 2211 are provided in two groups opposite to each other and are fixedly connected to the inner wall of the guide frame 221. The upper ends of the guide blocks 2211 are inclined and are used to guide large sludge into the first crushing teeth 2221 and the second crushing teeth 2231 for crushing. The cleaning port 2212 is provided on the side of the guide block 2211 and is used to clean the sludge adhered to the outside of the first crushing teeth 2221 and the second crushing teeth 2231 .

[0023] As an improvement, Figure 7-Figure 8 As shown, the fine crushing component 21 includes: The fixing block 211 is fixedly connected to the middle of the guide frame 221 and is located between the first roller 222 and the second roller 223; The cleaning teeth 212 are provided in multiple groups at equal intervals and are fixedly connected to both sides of the fixed block 211 , and are used to cooperate with the cleaning opening 2212 to clean the sludge adhered to the outside of the first crushing teeth 2221 and the second crushing teeth 2231 .

[0024] Furthermore, the fine crushing component 21 further includes: The supporting plate 217 is provided at the upper opening of the granulation unit 1 and is fixedly connected to the lower ends of the fixing block 211 and the guide block 2211; The crushing openings 2171 are evenly distributed throughout the interior of the supporting plate 217 and are used to finely crush the sludge crushed by the coarse crushing assembly 22 .

[0025] Furthermore, a first guide groove 213 is provided inside the fixing block 211; A slider 215 is slidably inserted into the first guide groove 213; The lower end of the slider 215 is fixedly connected to a pendulum block 216 that contacts the upper end of the carrier plate 217; The two ends of the swing block 216 in the moving direction are provided with downwardly inclined ejection slopes 2161 for kneading the sludge that has fallen onto the carrying plate 217 after coarse crushing and ejecting it from the crushing opening 2171 .

[0026] A second guide groove 2131 is provided inside the fixing block 211 and in the middle of the upper end of the first guide groove 213; A guide block 214 is slidably inserted into the second guide groove 2131 , and a reciprocating threaded hole 2141 is provided in the guide block 214 ; A reciprocating screw 218 is threadedly connected to the reciprocating threaded hole 2141 to drive the guide block 214 to reciprocate; The transmission wheel 2181 is fixedly mounted on the outer side of the reciprocating screw 218 and located at one end of the fixed block 211; A belt 2182 is sleeved on the outer side of the transmission wheel 2181 for driving the transmission wheel 2181 to rotate, and the other end of the belt 2182 is sleeved on the outer side of the first rotating roller 222 .

[0027] As an improvement, Figure 4 , Figure 6 As shown, the granulation unit 1 includes: The extrusion tube 11 is installed on the upper end of the support frame 100; The spiral pusher 12 is rotatably mounted on one end of the driving assembly 23 and is located inside the extrusion tube 11, and is used to extrude the sludge that falls into the extrusion tube 11 after being crushed by the fine crushing assembly 21 along the extrusion tube 11; The shrink tube 13 is connected to the discharge end of the extrusion tube 11 through a flange 131. The inner diameter of the shrink tube 13 gradually decreases along the extrusion direction of the sludge, and is used to compact the sludge extruded by the spiral pusher 12. The extrusion die 14 is installed at the discharge end of the shrink tube 13. A plurality of granulation ports 141 are evenly distributed inside the extrusion die 14 for granulating the extruded sludge. A cutter for cutting the extruded sludge strips is rotatably provided on the outer side of the granulation port 141 of the extrusion die 14. The cutter is not shown in the figure.

[0028] As an improvement, Figure 3-Figure 5 As shown, the driving assembly 23 includes: The driving motor 231 is mounted on the upper end of the support frame 100 and is located on one side of the coarse crushing assembly 22; The main shaft 232 is connected to the driving end of the driving motor 231. The outer end of the main shaft 232 opposite to the driving motor 231 is fixedly connected to one end of the spiral pusher 12 to drive the spiral pusher to rotate.

[0029] Furthermore, the driving assembly 23 further includes: The first gear 233 is fixedly mounted on the outer side of the main shaft 232 and is located between the driving motor 231 and the screw pusher 12; A speed increasing gear 234 is rotatably connected to one side of the material guide frame 221 , and the speed increasing gear 234 is engaged with the first gear 233 ; A second gear 235 is fixedly connected to one end of the second roller 223 , and the second gear 235 is engaged with the speed-increasing gear 234 ; The third gear 236 is fixedly connected to one end of the first roller 222 . The third gear 236 is engaged with the second gear 235 to drive the first roller 222 to rotate.

[0030] It should be noted that: in the specific implementation process of the present invention, Figure 1-Figure 2 , Figure 4-Figure 6 As shown, the driving motor 231 is started, and the driving motor 231 drives the first gear 233 to rotate through the main shaft 232, and the first gear 233 drives the second gear 235 to rotate through the speed-increasing gear 234, and the second gear 235 drives the second crushing tooth 2231 to rotate through the second roller 223. At the same time, the second gear 235 drives the first roller 222 to rotate through the third gear 236, and the first roller 222 drives the first crushing tooth 2221 to rotate, and the large sludge that needs to be granulated is put into the guide frame 221. At this time, under the rotation action of the first crushing teeth 2221 and the second crushing teeth 2231, the large sludge is crushed by the first crushing teeth 2221 and the second crushing teeth 2231, and then falls onto the carrying plate 217 through the gap between the cleaning teeth 212, completing the preliminary crushing of the large sludge. like Figure 7-Figure 8 As shown, the first rotating roller 222 drives the first crushing tooth 2221 to rotate, and also drives the transmission wheel 2181 to rotate through the belt 2182. The transmission wheel 2181 drives the guide block 214 to move back and forth along the second guide groove 2131 through the reciprocating screw 218 and the reciprocating threaded hole 2141. The guide block 214 drives the swing block 216 to slide back and forth along the upper end of the supporting plate 217 through the slider 215. The swing block 216 uses the ejection inclined surface 2161 to knead the small pieces of sludge that continue to fall on the upper end of the supporting plate 217 after being crushed. The small pieces are kneaded along the upper surface of the supporting plate 217 and then squeezed into the extrusion tube 11 along the crushing opening 2171, so that the density of each part of the small pieces of sludge after kneading is kept uniform. By squeezing the small pieces of sludge through the crushing opening 2171, the sludge can be broken into smaller pieces at the crushing opening 2171, thereby improving the quality of subsequent sludge granulation and avoiding looseness caused by uneven density distribution inside the sludge. like Figure 3-Figure 5As shown, while the above-mentioned main shaft 232 drives the first gear 233 to rotate, the main shaft 232 also drives the spiral pusher 12 to rotate in the extrusion tube 11, so that the sludge broken into smaller pieces by the crushing port 2171 enters the contraction tube 13 along the extrusion tube 11 under the extrusion action of the spiral pusher 12. The sludge gradually gathers into a continuous state along the contraction tube 13 and enters the extrusion die 14. Subsequently, the sludge is extruded into long strips along the granulation port 141 and is cut into granules by the cutting device set outside the granulation port 141 to the reciprocating cutting device, thereby realizing the synchronous crushing and granulation operations with the same power source in the same equipment, and the working efficiency is high.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A granulation device for sludge recovery, comprising a support frame (100), characterized in that: Also includes: A granulation unit (1), mounted on the upper end of the support frame (100), is used to granulate the crushed sludge; The crushing unit (2) comprises a coarse crushing assembly (22) disposed above the feed inlet of the granulation unit (1) for crushing large sludge, a fine crushing assembly (21) disposed below the coarse crushing assembly (22) for kneading and crushing the coarsely crushed sludge, and a driving assembly (23) disposed at one end of the coarse crushing assembly (22) for synchronously driving the coarse crushing assembly (22), the fine crushing assembly (21), and the granulation unit (1) to respectively perform coarse crushing, fine crushing, and granulation operations; The fine crushing component (21) comprises: Fixed block (211); A carrying plate (217) is provided at the upper opening of the granulation unit (1); Crushing openings (2171) are evenly distributed throughout the interior of the carrier plate (217) and are used to finely crush the sludge crushed by the coarse crushing assembly (22); A first guide groove (213) is provided running through the interior of the fixing block (211); A slider (215) is slidably inserted into the first guide groove (213); The lower end of the slider (215) is fixedly connected to a pendulum block (216) in contact with the upper end of the bearing plate (217); Both ends of the swing block (216) in the moving direction are provided with downwardly inclined ejection slopes (2161) for kneading the sludge that has fallen onto the carrying plate (217) after coarse crushing and ejecting it from the crushing opening (2171).

2. A granulation device for sludge recovery according to claim 1, characterized in that: The coarse crushing assembly (22) comprises: A material guide frame (221) is mounted on the upper end of the support frame (100) and is located outside the granulation unit (1); A first rotating roller (222) is connected to one end of the driving assembly (23) and is located inside the material guide frame (221); first crushing teeth (2221) for crushing large sludge are distributed on the outer side of the first rotating roller (222); The second roller (223) is connected to one end of the driving assembly (23) and is located on one side of the first roller (222). Second crushing teeth (2231) for cooperating with the first crushing teeth (2221) to crush large sludge are evenly distributed on the outside of the second roller (223).

3. A granulation device for sludge recovery according to claim 2, characterized in that: The coarse crushing assembly (22) further comprises: The guide blocks (2211) are provided in two groups opposite to each other and are fixedly connected to the inner wall of the guide frame (221). The upper ends of the guide blocks (2211) are arranged at an angle and are used to guide large sludge to the first crushing teeth (2221) and the second crushing teeth (2231) for crushing. The cleaning port (2212) is provided on the side of the guide block (2211) and is used to clean the sludge adhering to the outside of the first crushing teeth (2221) and the second crushing teeth (2231).

4. A granulation device for sludge recovery according to claim 2, characterized in that: The fine crushing component (21) further comprises: The fixed block (211) is fixedly connected to the middle of the material guide frame (221) and is located between the first rotating roller (222) and the second rotating roller (223); The cleaning teeth (212) are provided in multiple groups at equal intervals and are fixedly connected to both sides of the fixed block (211) for cooperating with the cleaning opening (2212) to clean the sludge adhered to the outside of the first crushing teeth (2221) and the second crushing teeth (2231).

5. The granulation device for sludge recovery according to claim 1, characterized in that: A second guide groove (2131) is provided inside the fixing block (211) and in the middle of the upper end of the first guide groove (213); A guide block (214) is slidably inserted into the second guide groove (2131), and a reciprocating threaded hole (2141) is provided inside the guide block (214); a reciprocating screw (218) threadedly connected to the interior of the reciprocating threaded hole (2141) for driving the guide block (214) to perform reciprocating motion; A transmission wheel (2181) is fixedly sleeved on the outside of the reciprocating screw (218) and located at one end of the fixed block (211); A belt (2182) is sleeved on the outside of the transmission wheel (2181) for driving the transmission wheel (2181) to rotate, and the other end of the belt (2182) is sleeved on the outside of the first rotating roller (222).

6. A granulation device for sludge recovery according to claim 2, characterized in that: The granulation unit (1) comprises: An extrusion tube (11) is mounted on the upper end of the support frame (100); A spiral pusher (12) is rotatably mounted on one end of the driving assembly (23) and located inside the extrusion pipe (11), and is used to extrude the sludge that falls into the extrusion pipe (11) after being crushed by the fine crushing assembly (21) along the extrusion pipe (11); A shrink tube (13) is connected to the discharge end of the extrusion tube (11) via a flange (131), wherein the inner diameter of the shrink tube (13) gradually decreases along the extrusion direction of the sludge, and is used to compact the sludge extruded by the screw pusher (12); An extrusion die (14) is installed at the discharge end of the shrink tube (13), and a plurality of granulation ports (141) are evenly distributed inside the extrusion die (14) for granulating the extruded sludge.

7. A granulation device for sludge recovery according to claim 6, characterized in that: The drive assembly (23) comprises: A drive motor (231) is mounted on the upper end of the support frame (100) and located on one side of the coarse crushing assembly (22); The main shaft (232) is connected to the driving end of the driving motor (231), and one end of the main shaft (232) opposite to the driving motor (231) is fixedly connected to one end of the spiral pusher (12) for driving the spiral pusher to rotate.

8. A granulation device for sludge recovery according to claim 7, characterized in that: The drive assembly (23) further comprises: A first gear (233) is fixedly sleeved on the outside of the main shaft (232) and located between the driving motor (231) and the spiral pusher (12); A speed increasing gear (234) is rotatably connected to one side of the material guiding frame (221), and the speed increasing gear (234) is meshed with the first gear (233); A second gear (235) is fixedly connected to one end of the second rotating roller (223), and the second gear (235) is meshed with the speed-increasing gear (234); The third gear (236) is fixedly connected to one end of the first rotating roller (222). The third gear (236) is engaged with the second gear (235) and is used to drive the first rotating roller (222) to rotate.

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