Double-servo controllable biomass granulator

Abstract

The invention belongs to the technical field of biomass granulation equipment, and discloses a double-servo controllable biomass granulator. Comprising a feeding mechanism, a discharging mechanism, a double-shaft distance adjusting mechanism, a driving assembly and a shaft system mechanism, the feeding mechanism is arranged above the double-shaft distance adjusting mechanism, the bottom of the feeding mechanism communicates with the upper portion of the double-shaft distance adjusting mechanism, and the shaft system mechanism used for granulation is arranged on the upper portion in the double-shaft distance adjusting mechanism; the front end of the discharging mechanism is inserted into a die roller of the shafting mechanism, the driving assembly is arranged on the double-shaft distance adjusting mechanism, and a roller shaft driving motor of the driving assembly is connected with a roller shaft of the shafting mechanism through a driving adapter flange to achieve driving. The structure is compact, granulation of multiple specifications and dimensions can be achieved, the production cost is reduced, the maintenance time is shortened, and operation is easy and convenient.

Description

Technical Field

[0001] This invention belongs to the technical field of biomass pelletizing equipment, and specifically relates to a dual-servo controllable biomass pelletizer. Background Technology

[0002] In the biomass industry, due to the prevalence of flat die pelleting and ring die pelleting processes, the following problems are common: The material is too light to be effectively fed into the die rollers, causing slippage and affecting pelleting efficiency. When using wheat or rice straw, the low bulk density hinders effective pelleting, resulting in generally low production efficiency for these materials. Furthermore, existing pelleting equipment suffers from the following issues: Material is typically fed directly into the hopper or via a screw conveyor before entering the pelleting machine. Both methods result in suspended material that cannot be compacted during feeding, further hindering effective feeding into the die rollers and causing slippage, thus impacting pelleting efficiency. The amount of material fed is also uncontrollable, with excessive feed causing frequent abnormal shutdowns of the drive motor. Existing separately driven rotating discharge mechanisms occupy a large space and increase production costs. Dual-roller structures cannot effectively adjust the roller spacing, leading to roller wear and requiring replacement or repair, significantly impacting operating costs. Furthermore, existing industry practices impose numerous limitations on pellet size; typically, only pellets around 8 millimeters can be produced between the two rollers, making it impossible to adjust processing for various raw materials. The lifespan of the die rollers and die skin in traditional pelletizers is only 300 tons and 800 tons respectively. These relatively short service lives cannot meet the demands for pelletizing various sizes. Therefore, further research and development are needed to create a pelletizer that can solve the aforementioned technical problems. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a dual-servo controllable biomass pelletizer with a compact structure, capable of pelletizing multiple sizes, reducing production costs, minimizing maintenance time, and being simple and convenient to operate.

[0004] The above-mentioned objective of this invention is achieved through the following technical solution: A dual-servo controllable biomass pelletizer includes a feeding mechanism, a discharging mechanism, a dual-axis spacing adjustment mechanism, a drive assembly, and a shaft system mechanism. The feeding mechanism is positioned above the dual-axis spacing adjustment mechanism, and its bottom is connected to the top of the dual-axis spacing adjustment mechanism. A shaft system mechanism for pelletizing is located in the upper part of the dual-axis spacing adjustment mechanism. The front end of the discharging mechanism is inserted into the mold roller of the shaft system mechanism. The drive assembly is mounted on the dual-axis spacing adjustment mechanism, and the roller drive motor of the drive assembly is connected to the roller of the shaft system mechanism via a drive adapter flange to achieve drive.

[0005] The feeding mechanism is a uniform feeding / distribution / pressing mechanism, including a buffer hopper for buffering materials and a feeding box for feeding / distribution / pressing materials. The buffer hopper is fixedly installed above the feeding box. A rotating shaft is installed inside the feeding box, and a feeding drive motor for driving the rotating shaft is installed on the outer wall of the feeding box. One end of the rotating shaft passes through the feeding box and is connected to the output end of the feeding drive motor. The other end of the rotating shaft is installed on the inner wall of the feeding box through a feeding bearing and a feeding bearing seat. The rotating shaft is provided with several guiding and pressing claws, and guide plates are provided on both sides of the rotating shaft. The guide plates are installed on the inner wall of the feeding box and have several elongated grooves for guiding the material pressing claws to pass through. Preferably, three rows of guide and pressing claws are equidistantly arranged on the outer circumference of the rotating shaft. Each row of guide and pressing claws has several guide and pressing claws equidistantly arranged on it. The guide and pressing claws are arc-shaped and the orientation of the several guide and pressing claws is the same.

[0006] The material guide and pressure claws are preferably welded to the outer circumference of the rotating shaft.

[0007] A feeding bearing and a feeding bearing seat are installed at the connection between the rotating shaft and the feeding box.

[0008] The buffer bin is funnel-shaped, with a rectangular structure lacking both upper and lower surfaces at the top and a trapezoidal structure lacking both upper and lower surfaces at the bottom. The lower sidewalls have a vertical inclination angle of 30-60 degrees.

[0009] Two rotating shafts are preferably provided, and two corresponding feeding drive motors are also preferably provided. The distance between two adjacent rotating shafts is 400-700mm. The preferred distance between two adjacent rotating shafts is 600mm.

[0010] The distance between the guide and pressing claws on two adjacent rotating shafts is 10-15mm, preferably 15mm.

[0011] The feeding drive motor is a servo motor, and the feeding drive motor is mounted on the outer wall of the feeding box via a feeding drive motor mounting plate.

[0012] The buffer bin and the feeding bin are fixedly connected by bolts.

[0013] The guide plate is inclined downwards, and the angle between the guide plate and the horizontal plane is 45-70 degrees, preferably 60 degrees.

[0014] The guide plate is equipped with several equidistant long slots, which are used to guide the material while also blocking the material and allowing the guide and pressing claws to pass through. The upper part guides the material, while the lower part blocks the material remaining in the guide and pressing claws and assists in further compaction.

[0015] The gap between the long groove and the left and right ends of the guide and pressing claw is 0.5-2mm; preferably 1mm.

[0016] The feeding mechanism can be used for feeding / dividing / pressing materials with a diameter of 10-1000mm.

[0017] The front end of the discharge mechanism is located inside the mold roller of the shaft system mechanism, including a discharge cylinder. The outer wall of the front end of the discharge cylinder is provided with a drive mounting plate for connecting with the mold roller to achieve synchronous rotation with the mold roller. The end of the discharge cylinder is connected to a discharge pipe for discharge. A discharge port is opened on the front part of the discharge cylinder. A material receiving guide component is provided at the discharge port. A spiral discharge rod is provided inside the discharge cylinder. A scraper is radially provided on the material receiving guide component.

[0018] The front end of the synchronous automatic discharge mechanism is located inside the mold roller, which is used to receive materials and discharge them synchronously.

[0019] The front end of the synchronous automatic feeding mechanism is fixedly installed inside the cavity of the mold roller via a drive mounting plate.

[0020] The discharge pipe is connected to the receiving box to collect materials.

[0021] The material receiving guide assembly includes two discharge guide plates and two discharge receiving plates. The two discharge receiving plates are arranged facing each other, and the two discharge guide plates are arranged facing each other. The two discharge receiving plates are connected by the two discharge guide plates.

[0022] A scraper bar is installed between the upper part of the two discharge receiving plates, and a scraper is installed on the scraper bar. The scraper bar is fixed to the two discharge receiving plates by a connecting plate.

[0023] The discharge receiving plate is a fan-shaped plate with curved surfaces on both the top and bottom. The curved surface at the bottom of the discharge receiving plate fits into the curved surface at the connection point with the discharge cylinder.

[0024] Two discharge guide plates and two discharge receiving plates are welded to the outer surface of the discharge cylinder.

[0025] The rear outer periphery of the discharge cylinder is also fitted with a discharge fixing flange, which is fixed to the fixed bearing seat or sliding bearing seat of the mold roller by bolts.

[0026] The discharge pipe is set at an angle of 45-60 degrees to the vertical plane.

[0027] The spiral discharge rod is preferably a spiral discharge rod with a plate-like structure at the spiral part.

[0028] The dual-axis spacing adjustment mechanism includes a base frame and a top cover for housing the shaft system, and a fixed support for housing the drive assembly. The top cover is mounted on the base frame. A fixed bearing seat and an adjustment frame are respectively installed at the connection between the top cover and the base frame. The fixed bearing seat and the adjustment frame are arranged side by side. A sliding bearing seat is installed inside the adjustment frame. Guide and limiting grooves are provided on the upper and lower surfaces of the sliding bearing seat. A wedge block is provided at each of the four corners of the sliding bearing seat. The wedge blocks are in contact and fit against the sliding bearing seat. One end of the wide side of the wedge block is connected to the adjustment frame through an adjustment screw assembly. The adjustment screw assembly passes through the adjustment frame and connects to the wedge block. The fixed bearing seat and the sliding bearing seat are used to house the roller shaft.

[0029] The adjusting screw assembly includes adjusting screw A and adjusting screw B. Adjusting screw A is threadedly connected to the adjusting frame and then contacts the connecting hole A inside the wedge block. Adjusting screw B is threadedly connected to the adjusting frame and then contacts the threaded hole inside the wedge block. The depth of the connecting hole A inside the wedge block is less than the depth of the threaded hole.

[0030] The fixed bearing housing includes fixed bearing housing A and fixed bearing housing B. Fixed bearing housing A is installed on the upper cover, and fixed bearing housing B is installed on the base frame. When the upper cover and the base frame are connected and fixed, fixed bearing housing A and fixed bearing housing B are joined together to form an integral circular fixed bearing housing.

[0031] The adjustment frame includes adjustment frame A and adjustment frame B. Adjustment frame A is set on the upper cover, and adjustment frame B is set on the base frame. After the upper cover and the base frame are connected and fixed, adjustment frame A and adjustment frame B are joined together to form an integral rectangular adjustment frame.

[0032] The sliding bearing housing includes sliding bearing housing A and sliding bearing housing B. Sliding bearing housing A is mounted on the upper cover, and sliding bearing housing B is mounted on the base frame. After the upper cover and the base frame are connected and fixed, sliding bearing housing A and sliding bearing housing B are joined together to form an integral sliding bearing housing.

[0033] The upper cover includes a cover body, and an upper cover connecting plate is provided on the top surface of the cover body. The upper cover connecting plate is a connecting plate with a central opening for connection with existing feeding mechanisms or equipment. Fixed bearing seats A and adjusting frames A are provided on both sides of the lower part of the cover body. Sliding bearing seats A are provided inside the adjusting frames A. The adjusting frames A and the sliding bearing seats A are slidably connected by guide limiting grooves and guide bars. The guide bars are located on the top edge of the adjusting frames A.

[0034] The top cover also has a viewing window on its side wall.

[0035] The base frame includes a base, and fixed bearing seats B and adjusting frames B are provided on both sides of the upper part of the base. The adjusting frame B contains a sliding bearing seat B. The adjusting frame B and the sliding bearing seat B are slidably connected by a guide limiting groove and a guide bar. The guide bar is set on the bottom edge of the adjusting frame B.

[0036] A roller placement area is provided between the top cover and the base frame. The roller placement area includes a fixed roller placement area and a sliding adjustment roller placement area. Roller A is placed in the fixed roller placement area, and roller B is placed in the sliding adjustment roller placement area.

[0037] The fixed support is located on the side of the base frame.

[0038] The top cover also includes a baffle assembly, which consists of two double-arched baffle plates connected by two arc-shaped guide plates. The guide plates are bolted to the top cover, and the baffle plates are also bolted to the top cover by reinforcing ribs. Furthermore, the baffle plates are positioned parallel to the direction of the fixed bearing housing.

[0039] The base frame is also equipped with a receiving component, which forms an annular cavity after contacting the material blocking component, and is used to wrap the two rollers. However, the receiving component and the material blocking component do not contact the rollers and there is a gap between them.

[0040] The material blocking assembly includes a material blocking support, on which two double-arched material blocking plates are installed. The two double-arched material blocking plates are connected by two arc-shaped material guide plates to form a material receiving assembly. The double-arched material blocking plates are fixedly installed on the material blocking support.

[0041] The receiving assembly and the contact surface of the blocking assembly can be connected by bolts.

[0042] The drive assembly includes a roller drive motor, preferably a drive servo motor. The fixed support is a motor support. The roller drive motor is fixed on the motor support by a roller drive motor mounting bracket. The motor support is provided with several threaded holes to allow the roller drive motor mounting bracket to be adjusted in position on the motor support by bolts and threaded holes, so as to match the position adjustment of the roller B of the shaft system mechanism.

[0043] The drive assembly also includes a protective cover, and the connection between the roller drive motor and the roller of the shaft system mechanism is also covered with a protective cover.

[0044] The shaft system includes radially arranged roller A and roller B. Roller A includes a mold roller, with a drive flange and a driven flange at both ends. The front end of the drive flange is connected to the drive assembly via a drive adapter flange to achieve drive. The mold roller has a hollow internal structure for the discharge mechanism. Both ends of the mold roller are also equipped with drive bearings and driven bearings. The outer circumference of the mold roller is alternately decorated with protrusions and grooves in circles. The protrusions and grooves on the mold rollers of roller B and roller A are arranged alternately and oppositely. The drive bearing and driven bearing of roller B are equipped with sliding bearing seats in the dual-axis spacing adjustment mechanism. The other structures of roller B are the same as those of roller A. The distance between roller B and roller A is adjusted by adjusting screws and wedges in the dual-axis spacing adjustment mechanism.

[0045] Each ring of protrusions consists of an array of several bosses, and each ring of grooves consists of an array of several concave holes. The concave holes are through holes, with the bottom being through holes and the top being chamfered.

[0046] A boss is a concave structure with an arc-shaped concave surface at the bottom.

[0047] Roller A and roller B can move synchronously or asynchronously. The synchronous or asynchronous movement is achieved by adjusting the speed of two roller servo motors. Roller A and roller B are arranged crosswise in the horizontal direction, but do not contact each other.

[0048] A sealing plate is installed between the drive-end flange and the drive-end bearing, and a labyrinth-type sealing ring is also installed between the sealing plate and the drive-end bearing to achieve a double-layer seal. The sealing plate and sealing ring are not limited to specific models; their intended function is sufficient.

[0049] A sealing plate is installed between the driven flange and the driven bearing, and a labyrinth-type sealing ring is also installed between the sealing plate and the driven bearing to achieve a double seal. The sealing plate and sealing ring are not limited to specific models; their intended function is sufficient.

[0050] The driven end of the bearing is connected to the bearing cap.

[0051] The advantages of this invention compared to the prior art are: This invention provides a dual-servo controllable biomass pelletizer. It features a compact structure, enabling pelleting of multiple sizes, reducing production costs and maintenance time, and offering simple and convenient operation. The feeding mechanism, with its guiding and pressing claws and guide plate, ensures uniform feeding and simultaneous material compaction. Its simple structure reduces downtime and maintenance, improving overall efficiency and lowering maintenance costs. No additional pre-treatment equipment is required. The discharge mechanism rotates with the die roller, significantly reducing space requirements and allowing discharge during pelleting. Sharing a single roller drive motor with the die roller further reduces production costs. Its compact structure and simple operation enhance overall production efficiency. The dual-axis spacing adjustment mechanism allows for roller spacing adjustment without disassembling the entire machine, greatly reducing downtime, extending roller lifespan, improving production efficiency, lowering production costs, reducing maintenance time, increasing overall uptime, and enhancing ease of operation. The shaft system allows for adjustment between the two rollers, and the roller structure and position can accommodate various pelleting sizes. It has a wider range of applications. The double-roller extrusion structure and its inherent structural design achieve efficient material feeding. The roller spacing can be adjusted arbitrarily, and the rollers can continue to be used even when worn, greatly extending their service life. The double-roller structure ensures effective granulation even with moisture content of 10-25%, allowing direct granulation of silage raw materials. The granulation diameter range covers 3-30 mm. It can directly granulate raw materials without any pretreatment, effectively reducing various cumbersome processes and saving significant costs. It increases the service life of the die rollers, reduces the need for replacing vulnerable parts, improves operational efficiency, and lowers operating costs. The granulator provided by this invention can improve the feeding and granulation efficiency of loose materials such as bamboo, wheat, rice, oats, and reeds. For common woody materials, corn stalks, cotton, sesame, etc., the granulation degree is more than 1.5 times higher than traditional granulators. Currently, the pelleting process in the industry is complex and costly, requiring crushing, screening, drying, coarse and fine grinding, and pelleting. This numerous steps and high costs limit the industry's development. Existing pelleting processes have strict requirements for material moisture content, generally requiring materials to be controlled at around 15% before entering the pelleting machine, resulting in a narrow applicability and necessitating additional pre-treatment of the materials. In contrast, the pelleting machine provided by this invention has a wider range of moisture requirements, effectively pelletizing materials with a moisture content between 10% and 25%. Silage materials can be directly pelletized for use as silage feed, preserving nutrients. The die roller has a service life of over 3000 tons, and under favorable operating conditions, it can reach over 5000 tons. Attached Figure Description

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1 This is a perspective view of a dual-servo controllable biomass pelletizer according to the present invention.

[0053] Figure 2 This is a side view of a dual-servo controllable biomass pelletizer according to the present invention.

[0054] Figure 3 This is a perspective view of the feeding mechanism of the present invention.

[0055] Figure 4 This is a perspective view of the feeding mechanism of the present invention after the buffer bin has been removed.

[0056] Figure 5 This is a top view of the feeding mechanism of the present invention after the buffer bin has been removed.

[0057] Figure 6 This is a perspective view of the material discharge mechanism of the present invention.

[0058] Figure 7 This is a schematic diagram of the material discharge mechanism of the present invention in operation.

[0059] Figure 8 for Figure 7 AA sectional view.

[0060] Figure 9 This is a perspective view of the dual-axis spacing adjustment mechanism of the present invention. The upper cover baffle assembly is not shown in the figure for clarity of the result.

[0061] Figure 10 This is a rear view of the dual-axis spacing adjustment mechanism of the present invention.

[0062] Figure 11 This is a perspective view A of the top cover of the present invention.

[0063] Figure 12 This is a perspective view B of the cover of the present invention.

[0064] Figure 13 This is a perspective view of the receiving component of the present invention.

[0065] Figure 14 This is a perspective view of the driving component of the present invention.

[0066] Figure 15 This is a top view of the shaft system mechanism of the present invention.

[0067] Figure 16 This is a front view of the shaft system mechanism of the present invention.

[0068] Figure 17 This is a perspective view of roller A of the present invention.

[0069] Figure 18 This is a perspective view of roller B of the present invention.

[0070] Figure 19 This is a simplified schematic diagram showing the state when the gap between the protrusion of the fixed mold roller and the outer circle of the sliding mold roller is 0.1mm. The mold roller of roller shaft A is the fixed mold roller, and the mold roller of roller shaft B is the sliding mold roller.

[0071] Figure 20 This is a simplified schematic diagram showing the state when the gap between the protrusion of the fixed mold roller and the outer circle of the sliding mold roller is 5mm. The mold roller on roller A is the fixed mold roller, and the mold roller on roller B is the sliding mold roller.

[0072] Figure 21 This is a simplified schematic diagram illustrating the state of the fixed mold roller of the present invention when its protrusion is inserted 2mm into the concave hole of the sliding mold roller for synchronous movement. The mold roller on roller A is a fixed mold roller, and the mold roller on roller B is a sliding mold roller.

[0073] In the diagram: 1. Feeding mechanism, 2. Discharging mechanism, 3. Dual-axis spacing adjustment mechanism, 4. Drive assembly, 5. Shaft system, 101. Buffer bin, 102. Feeding box body, 103. Feeding drive motor, 104. Feeding drive motor mounting plate, 105. Rotating shaft, 106. Guide plate, 107. Guide and pressure claw, 201. Discharge cylinder, 202. Discharge fixing flange, 203. Discharge pipe, 204. Drive mounting plate, 205. Spiral discharge rod, 206. Scraper rod, 207. Discharge guide plate, 208. Discharge receiving plate, 301. Top cover, 302. Base frame, 303. Fixed bearing seat A, 304. Fixed bearing seat B, 305. Adjusting frame A, 306. Adjusting frame B, 307. 308. Sliding bearing housing A; 309. Sliding bearing housing B; 310. Adjusting screw assembly; 311. Wedge block; 312. Motor support; 313. Top cover connecting plate; 314. Viewing window; 315. Material stop plate; 316. Guide plate; 317. Guide strip; 401. Receiving assembly; 402. Roller drive motor; 403. Roller drive motor mounting base; 504. Protective cover; 505. Roller A; 506. Roller B; 507. Driven end flange; 508. Driven end flange; 509. Driven end bearing; 510. Boss; 511. Guide limiting groove. Detailed Implementation

[0074] The present invention is described in detail below through specific embodiments, but this does not limit the scope of protection of the present invention. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can all be obtained commercially.

[0075] Example 1 A dual-servo controllable biomass pelletizer includes a feeding mechanism 1, a discharging mechanism 2, a dual-axis spacing adjustment mechanism 3, a drive assembly 4, and a shaft system mechanism 5. The feeding mechanism 1 is positioned above the dual-axis spacing adjustment mechanism 3, and its bottom is connected to the upper part of the dual-axis spacing adjustment mechanism 3. The upper part of the dual-axis spacing adjustment mechanism 3 is equipped with the shaft system mechanism 5 for pelletizing. The front end of the discharging mechanism 2 is inserted into the mold roller of the shaft system mechanism 5. The drive assembly 4 is mounted on the dual-axis spacing adjustment mechanism 3. The roller drive motor 401 of the drive assembly 4 is connected to the roller of the shaft system mechanism 5 through a drive adapter flange 508 to achieve drive.

[0076] The feeding mechanism 1 includes a buffer hopper 101 for buffering materials and a feeding box 102 for feeding / distributing / pressing materials. The buffer hopper 101 is fixedly installed above the feeding box 102. A rotating shaft 105 is installed inside the feeding box 102. A feeding drive motor 103 for driving the rotating shaft 105 is installed on the outer wall of the feeding box 102. One end of the rotating shaft 105 passes through the feeding box 102 and is connected to the output end of the feeding drive motor 103. The other end of the rotating shaft 105 is installed on the inner wall of the feeding box 102 through a feeding bearing and a feeding bearing seat. The rotating shaft 105 is provided with several guiding and pressing claws 107. Guide plates 106 are provided on both sides of the rotating shaft 105. The guide plates 106 are installed on the inner wall of the feeding box 102. Several elongated grooves are provided on the guide plates 106 for the guiding and pressing claws 107 to pass through. Preferably, three rows of material guiding and pressing claws are equidistantly arranged on the outer periphery of the rotating shaft 105. Each row of material guiding and pressing claws has several material guiding and pressing claws 107 equidistantly arranged on it. The material guiding and pressing claws 107 are arc-shaped and the several material guiding and pressing claws 107 face the same direction.

[0077] The material guide and pressure claw 107 is preferably welded to the outer periphery of the rotating shaft 105.

[0078] A feeding bearing and a feeding bearing seat are provided at the connection between the rotating shaft 105 and the feeding box 102.

[0079] The buffer bin 101 is funnel-shaped, with a rectangular structure lacking both upper and lower surfaces at the top and a trapezoidal structure lacking both upper and lower surfaces at the bottom. The sidewalls at the bottom have an inclination angle of 30-60 degrees in the vertical direction.

[0080] Two rotating shafts 105 are preferably provided, and two corresponding feeding drive motors 103 are also preferably provided. The distance between two adjacent rotating shafts 105 is 400-700mm. The distance between two adjacent rotating shafts 105 is preferably 600mm.

[0081] The spacing between the guide and pressing claws 107 on two adjacent rotating shafts 105 is 10-15mm, preferably 15mm.

[0082] The feeding drive motor 103 is a servo motor, and it is mounted on the outer wall of the feeding box 102 via a feeding drive motor mounting plate 104. The model of the servo motor is not specifically limited; any commercially available product that can perform its working function is acceptable.

[0083] The buffer hopper 101 and the feeding hopper 102 are fixedly connected by bolts.

[0084] The feeding box 102 is a rectangular structure lacking the top and bottom surfaces.

[0085] The guide plate 106 is inclined downward, and the angle between the guide plate 106 and the horizontal plane is 45-70 degrees, preferably 60 degrees.

[0086] The guide plate 106 is provided with several equidistant elongated grooves, which are used to guide the material, block the material, and allow the guide pressing claw 107 to pass through. The material is guided on the top, and the material remaining on the guide pressing claw 7 is blocked below and further compacted.

[0087] The gap between the elongated groove and the left and right ends of the guide and pressing claw 107 is 0.5-2mm; preferably 1mm.

[0088] The feeding mechanism 1 can be used for feeding / dividing / pressing materials with a diameter of 10-1000mm.

[0089] The front end of the discharge mechanism 2 is located inside the mold roller, including a discharge cylinder 201. The outer wall of the front end of the discharge cylinder 201 is provided with a drive mounting plate 204 for connecting with the mold roller to achieve synchronous rotation with the mold roller. The end of the discharge cylinder 201 is connected to the discharge pipe 203 for discharge. A discharge port is opened on the front part of the discharge cylinder 201, and a receiving guide component is provided at the discharge port. A spiral discharge rod 205 is provided inside the discharge cylinder 201, and a scraper is radially provided on the receiving guide component.

[0090] The front end of the synchronous automatic discharge mechanism is located inside the mold roller, which is used to receive materials and discharge them synchronously.

[0091] The front end of the synchronous automatic discharge mechanism is fixedly installed inside the cavity of the mold roller via the drive mounting plate 204.

[0092] The discharge pipe 203 is connected to the receiving box to collect materials.

[0093] The material receiving guide assembly includes two discharge guide plates 207 and two discharge receiving plates 208. The two discharge receiving plates 208 are arranged facing each other, and the two discharge guide plates 207 are arranged facing each other. The two discharge receiving plates 208 are connected by the two discharge guide plates 207.

[0094] A scraper rod 206 is provided between the upper parts of the two discharge receiving plates 208, and a scraper is provided on the scraper rod 206. The scraper rod 206 is fixed to the two discharge receiving plates 208 by a connecting plate.

[0095] The discharge receiving plate 208 is a fan-shaped plate with curved surfaces on both the top and bottom. The curved surface at the bottom of the discharge receiving plate 208 fits into the curved surface at the connection with the discharge cylinder 201.

[0096] Two discharge guide plates and two discharge receiving plates are welded to the outer surface of the discharge cylinder.

[0097] The rear outer periphery of the discharge cylinder 201 is also fitted with a discharge fixing flange 202, which is fixed to the fixed bearing seat or sliding bearing seat of the mold roller by bolts.

[0098] The discharge pipe 203 is set at an angle of 45-60 degrees with the vertical plane.

[0099] The spiral discharge rod of option 205 has a plate-like structure at the spiral part.

[0100] The dual-axis spacing adjustment mechanism 3 includes a base frame 302 and an upper cover 301 for placing the shaft system mechanism 5, and a fixed support for placing the drive assembly 4. The upper cover 301 is mounted on the base frame 302. A fixed bearing seat and an adjustment frame are respectively provided at the connection between the upper cover 301 and the base frame 302. The fixed bearing seat and the adjustment frame are arranged side by side. A sliding bearing seat is provided inside the adjustment frame. Guide and limiting grooves are provided on the upper and lower surfaces of the sliding bearing seat. A wedge block 310 is provided at each of the four corners of the sliding bearing seat. The wedge block 310 is in contact with and fits against the sliding bearing seat. One end of the wide surface of the wedge block 310 is connected to the adjustment frame through an adjustment screw assembly 309. The adjustment screw assembly 309 passes through the adjustment frame and is connected to the wedge block 310. The fixed bearing seat and the sliding bearing seat are used to place the roller shaft.

[0101] The adjusting screw assembly 309 includes adjusting screw A and adjusting screw B. Adjusting screw A is threadedly connected to the adjusting frame and then contacts the connecting hole A in the wedge block 310. Adjusting screw B is threadedly connected to the adjusting frame and then threadedly connected to the threaded hole in the wedge block 310. The depth of the connecting hole A in the wedge block 310 is less than the depth of the threaded hole.

[0102] The fixed bearing housing includes fixed bearing housing A303 and fixed bearing housing B304. Fixed bearing housing A303 is mounted on the upper cover 301, and fixed bearing housing B304 is mounted on the base frame 302. When the upper cover 301 and the base frame 302 are connected and fixed, fixed bearing housing A303 and fixed bearing housing B304 are joined together to form an integral circular fixed bearing housing.

[0103] The adjustment frame includes adjustment frame A305 and adjustment frame B306. Adjustment frame A305 is set on the upper cover 301, and adjustment frame B306 is set on the base frame 302. When the upper cover 301 and the base frame 302 are connected and fixed, adjustment frame A305 and adjustment frame B306 are joined together to form an integral rectangular adjustment frame.

[0104] The sliding bearing housing includes sliding bearing housing A307 and sliding bearing housing B308. Sliding bearing housing A307 is mounted on the upper cover 301, and sliding bearing housing B308 is mounted on the base frame 302. After the upper cover 301 and the base frame 302 are connected and fixed, sliding bearing housing A307 and sliding bearing housing B308 are joined together to form an integral sliding bearing housing.

[0105] The upper cover 301 includes a cover body, and an upper cover connecting plate 312 is provided on the top surface of the cover body. The upper cover connecting plate 312 is a connecting plate with a central opening for connection with the feeding mechanism 1. Fixed bearing seats A303 and adjusting frames A305 are provided on both sides of the lower part of the cover body. A sliding bearing seat A307 is provided inside the adjusting frame A305. The adjusting frame A305 and the sliding bearing seat A307 are slidably connected through a guide limiting groove and a guide bar 316. The guide bar 316 is provided on the top edge of the adjusting frame A305.

[0106] A viewing window 313 is also provided on the side wall of the top cover 1.

[0107] The base frame 302 includes a base, and fixed bearing seats B304 and adjusting frames B306 are provided on both sides of the upper part of the base. The adjusting frame B306 is provided with a sliding bearing seat B308. The adjusting frame B306 and the sliding bearing seat B308 are slidably connected by a guide limiting groove and a guide bar 316. The guide bar 316 is provided on the bottom edge of the adjusting frame B308.

[0108] A roller placement area is provided between the top cover 301 and the base frame 302. The roller placement area includes a fixed roller placement area and a sliding adjustment roller placement area. Roller A501 is placed in the fixed roller placement area, and roller B502 is placed in the sliding adjustment roller placement area.

[0109] The fixed support is set on the side of the base frame 302.

[0110] The upper cover 301 also includes a baffle assembly, which comprises two double-arched baffle plates 314. The two double-arched baffle plates 314 are connected by two arc-shaped guide plates 315 to form the baffle assembly. The guide plates 305 are fixed to the upper cover 301 with bolts, and the baffle plates 314 are fixed to the upper cover 301 with reinforcing ribs and bolts. The baffle plates 314 are arranged in a direction parallel to the direction of the fixed bearing seat.

[0111] The base frame 302 is also provided with a receiving component 317. The receiving component 317 is used to form an annular cavity after contacting the blocking component, which is used to wrap the two rollers. However, the receiving component 317 and the blocking component do not contact the rollers and there is a gap between them.

[0112] The material blocking assembly 317 includes a material blocking support, on which two double-arched material blocking plates are provided. The two double-arched material blocking plates are connected by two arc-shaped material guide plates 315 to form a material receiving assembly 317. The double-arched material blocking plates are fixedly installed on the material blocking support.

[0113] The receiving assembly 317 is used to connect with the material blocking assembly via bolts.

[0114] The drive assembly 4 includes a roller drive motor 401, preferably a drive servo motor. The fixed support is a motor support 311. The roller drive motor 401 is fixed on the motor support 311 by a roller drive motor fixing seat 402. The motor support 311 is provided with a plurality of threaded holes, which are used to adjust the position of the roller drive motor fixing seat 402 on the motor support 311 by bolts and threaded holes, so as to cooperate with the position adjustment of the roller B of the shaft system mechanism.

[0115] The drive assembly 4 also includes a protective cover 403, and the connection between the roller drive motor 401 and the roller of the shaft mechanism 3 is also covered by the protective cover 403.

[0116] The shaft system 5 includes radially arranged rollers A501 and B502. Roller A501 includes a mold roller, with a drive end flange 504 and a driven end flange 503 at both ends. The front end of the drive end flange 504 is connected to the drive assembly via a drive adapter flange 508 to achieve drive. The mold roller has a hollow internal structure. A drive end bearing 505 and a driven end bearing 509 are also provided at both ends of the mold roller. The outer circumference of the mold roller is alternately arranged with protrusions and grooves in circles. The protrusions and grooves on the mold rollers of rollers B502 and A501 are arranged alternately and oppositely. The drive end bearing 505 and the driven end bearing 509 of roller B502 are both provided with sliding bearing seats in the dual-axis spacing adjustment mechanism 3. The other structures of roller B502 are the same as those of roller A501. The distance between rollers B502 and A501 is adjusted by the adjusting screw group 309 and the wedge block 310 in the dual-axis spacing adjustment mechanism 3.

[0117] Each ring of protrusions consists of an array of several bosses 510, and each ring of grooves consists of an array of several concave holes. The concave holes are through holes, with the bottom being through holes and the top being chamfered.

[0118] The boss 510 is a concave structure with an arc-shaped concave surface at the bottom.

[0119] Rollers A501 and B503 can move synchronously or asynchronously. They are arranged crosswise in the horizontal direction but do not contact each other.

[0120] A sealing plate 506 is installed between the drive-end flange 504 and the drive-end bearing 505. A labyrinth-type sealing ring is also provided between the sealing plate 506 and the drive-end bearing 505 to achieve double-layer sealing. The sealing plate 506 and the sealing ring are not limited to specific models; they only need to achieve their working functions.

[0121] A sealing plate 506 is installed between the driven flange 503 and the driven bearing 509. A labyrinth-type sealing ring is also provided between the sealing plate 506 and the driven bearing 509 to achieve double sealing. The sealing plate 506 and the sealing ring are not limited to specific models, as long as they achieve their working functions.

[0122] The driven end bearing 509 is connected to the bearing cap 507 at its end.

[0123] In actual operation, the feeding mechanism 1 pours materials into the buffer hopper 101 manually or with the assistance of existing equipment. The materials are guided by the inclined lower part of the buffer hopper 101 and fall into the housing 102. Several arc-shaped guide and pressing claws 107 within the housing 102 evenly guide the materials downwards. Due to the position and structure of the arc-shaped guide and pressing claws 107, when both claws are horizontal, their arc-shaped bottom surfaces can compact the materials below them. When the hopper shaft mechanism 5 of the granulator below is full, the outer arc surface of the arc-shaped guide and pressing claws 107... The bottom material is compressed, which improves the feeding efficiency of the granulator. When some material fails to enter the hopper shaft mechanism 5 smoothly and is caught on the guide pressing claw 107 and moves with it, the angle and long groove on the guide plate 106 will press the material down and remove it from the guide pressing claw 107 through the long groove. This reduces the amount of material stuck. When there is too much material at the bottom, the feed drive motor 103 is decelerated or stopped by its corresponding frequency converter to control the material descent and achieve a slow feeding function. The motor is restarted after the material in the hopper shaft mechanism 5 is consumed, so as to achieve automatic control and reduce the stalling of the drive motor 103. After the material arrives, the two rollers (roller A501 and roller B502) are driven by connecting the drive adapter flange 508 and the roller drive motor 401 respectively. The distance between the two rollers (roller A501 and roller B502) is adjusted by adjusting the screw assembly 309 and the wedge block 310. The staggered state between the two rollers at different distances meets the working conditions of different operating conditions. Figures 19-21 ), When two rollers (roller A501 and roller B503) are arranged in a cross configuration, there are three preferred configurations. The first is that the protruding end of the boss 510 on one roller is directly opposite the recessed hole (a die hole for material discharge) on the other roller. The second is that the arc-shaped concave surface at the bottom of the boss 510 on one roller is directly opposite the recessed hole on the other roller. The third is that the boss 510 on one roller is inserted 2mm deep into the recessed hole on the other roller, but there is a gap between the boss 510 and the groove. Material enters the triangular area between the two rollers from the hopper above the rollers. The rotation of the two rollers drives the material through the axially arranged grooves and protrusions on the die roller surface for cutting. Radially, the outer surface of the boss on the outer circle of one roller is pressed against the arc-shaped concave surface at the bottom of the boss 510 on the outer circle of the other roller, extruding the shredded material into granules through the die hole. Here, the corresponding load data can be obtained through torque output. The servo motor effectively adjusts the roller speed to control the material feed rate, thereby balancing the entire pelleting system and preventing material blockage. When the material type changes, the servo motor can be used to adjust and change the corresponding speed output. For special materials, differential rotation of the two rollers can be adopted to improve the pelleting effect. When the die rollers wear down and their cutting or extrusion capabilities decrease, the radial adjustment of the sliding bearing seat can change the distance between the two die rollers to achieve a good cutting and extrusion effect. This greatly improves the service life of the die rollers and reduces equipment maintenance costs. The drive end bearing uses double-row tapered roller bearings, or single-row tapered roller bearings arranged face-to-face or back-to-back. The axial force is limited by locking the axial force with a lock nut. The driven end bearing uses double-row radial roller bearings. Depending on the machine size and actual working conditions, this bearing may be changed to a single row. When the material enters the concave hole, the particles are squeezed out by the extrusion of subsequent materials. The particles are then cut and discharged by the discharge mechanism 2. The discharge mechanism 2 can achieve synchronous discharge. The discharge mechanism 2 is installed inside the granulation mold roller by the drive mounting plate 204. When the roller drive mechanism motor 401 drives the mold roller to rotate, it drives the discharge mechanism 2 to rotate, and then the material particles are discharged from the outlet of the mold roller. The particles are scraped off by the scraper. The scraped particles are guided by the receiving guide component and fall into the discharge cylinder 201 through the discharge port. The particles are then transported to the discharge pipe 203 at the end by the spiral discharge rod 205 in the discharge cylinder 201 for discharge. The discharge mechanism 1 rotates with the mold roller to achieve synchronous automatic discharge, which shortens the working cycle, reduces the overall space, and shares a single drive mechanism roller drive mechanism motor 401, thus reducing production costs.In the dual-axis spacing adjustment mechanism 3, under normal working conditions, the two rollers are placed on the fixed roller placement area and the sliding adjustment roller placement area respectively, and fixed by bearings and bearing mounting seats for operation. However, after working for a period of time, it is found that the rollers are worn and cannot meet the working conditions. Therefore, the operation of the drive assembly 4 is stopped. After stopping, the wedge block 310 is moved down with the thrust by adjusting screw A of the adjusting screw group 309 (the adjusting bolt group 309 on the other side can be adjusted by adjusting screw B to provide tension to move the wedge block 310), which provides thrust to the sliding bearing seat. It moves through the guide limit groove and guide bar 316 through sliding connection. The relative sliding driven by the wedge block 310 drives the sliding bearing seat to move to adjust the specified gap. In turn, it drives the roller to move to the working spacing. At the same time, the position of the motor mounting seat on the motor support 311 is adjusted by bolts and threaded holes to realize the corresponding position change of the drive motor. The angle of the wedge block is 7-8 degrees, preferably 7.5 degrees, to form a self-locking angle, ensuring that the equipment always maintains self-locking after readjustment, making the equipment operation more stable. A standard scale can be set on the position of the sliding bearing seat and the bottom frame 302 or the top cover 301 to check whether the adjustment mechanism is in the correct position.

[0124] The embodiments described above are merely preferred embodiments of the present invention, and not all feasible embodiments of the present invention. Any obvious modifications made by those skilled in the art without departing from the principles and spirit of the present invention should be considered to be included within the scope of protection of the claims of the present invention.

Claims

1. A dual-servo controllable biomass pelletizer, characterized in that, The assembly includes a feeding mechanism (1), a discharging mechanism (2), a dual-axis spacing adjustment mechanism (3), a drive assembly (4), and a shaft system mechanism (5). The feeding mechanism (1) is located above the dual-axis spacing adjustment mechanism (3), and the bottom of the feeding mechanism (1) is connected to the top of the dual-axis spacing adjustment mechanism (3). The upper part of the dual-axis spacing adjustment mechanism (3) is equipped with a shaft system mechanism (5) for granulation. The front end of the discharging mechanism (2) is inserted into the mold roller of the shaft system mechanism (5). The drive assembly (4) is located on the dual-axis spacing adjustment mechanism (3). The roller drive motor (401) of the drive assembly (4) is connected to the roller of the shaft system mechanism (5) through a drive adapter flange (508) to achieve drive. The shaft system mechanism (5) includes a radially arranged roller A (501) and roller B (502). The roller A (501) includes a mold roller, wherein the two ends of the mold roller are respectively provided with drive ends. Flange (504) and driven end flange (503); the front end of the drive end flange (504) is connected to the drive assembly through the drive adapter flange (508) to achieve drive. The mold roller has a hollow structure inside. The two ends of the mold roller are respectively provided with drive end bearing (505) and driven end bearing (509). The outer circumference of the mold roller is alternately arranged with protrusions and grooves in circles. The protrusions and grooves on the mold rollers on roller shaft B (502) and roller shaft A (501) are arranged alternately and oppositely. The drive end bearing (505) and driven end bearing (509) of roller shaft B (502) are both provided with sliding bearing seats in the dual-axis spacing adjustment mechanism (3). The other structures of roller shaft B (502) are the same as those of roller shaft A (501). The distance between roller shaft B (502) and roller shaft A (501) is adjusted by adjusting screw group (309) and wedge block (310) in the dual-axis spacing adjustment mechanism (3).

2. The dual-servo controllable biomass pelletizer as described in claim 1, characterized in that, The feeding mechanism (1) includes a buffer hopper (101) for buffering materials and a feeding box (102) for feeding / distributing / pressing materials. The buffer hopper (101) is fixedly installed above the feeding box (102). A rotating shaft (105) is installed inside the feeding box (102). A feeding drive motor (103) for driving the rotating shaft (105) is installed on the outer wall of the feeding box (102). One end of the rotating shaft (105) passes through the feeding box (102) and connects with the feeding drive motor. The output end of the motor (103) is connected, and the other end of the rotating shaft (105) is set on the inner wall of the feeding box (102) through the feeding bearing and the feeding bearing seat; the rotating shaft (105) is provided with several material guiding and pressing claws (107), and the rotating shaft (105) is provided with guide plates (106) on both sides. The guide plates (106) are set on the inner wall of the feeding box (102), and the guide plates (106) are provided with several long grooves for the material guiding and pressing claws (107) to pass through.

3. The dual-servo controllable biomass pelletizer as described in claim 1, characterized in that, The front end of the discharge mechanism (2) is located inside the mold roller, including the discharge cylinder (201). The outer wall of the front end of the discharge cylinder (201) is provided with a drive mounting plate (204) for connecting with the mold roller to achieve synchronous rotation with the mold roller. The end of the discharge cylinder (201) is connected to the discharge pipe (203) for discharge. A discharge port is opened on the front part of the discharge cylinder (201). A receiving guide component is provided at the discharge port. A spiral discharge rod (205) is provided inside the discharge cylinder (201). A scraper is radially provided on the receiving guide component.

4. The dual-servo controllable biomass pelletizer as described in claim 1, characterized in that, The dual-axis spacing adjustment mechanism (3) includes a base frame (302) and a top cover (301) for placing the shaft system mechanism (5), and a fixed support for placing the drive assembly (4). The top cover (301) is set on the base frame (302). A fixed bearing seat and an adjustment frame are respectively set at the connection between the top cover (301) and the base frame (302). The fixed bearing seat and the adjustment frame are arranged side by side. A sliding bearing seat is set inside the adjustment frame. Guide limit grooves are set on the upper and lower surfaces of the sliding bearing seat. A wedge block (310) is provided at each of the four corners of the sliding bearing seat. The wedge block (310) is in contact with the sliding bearing seat. One end of the wide side of the wedge block (310) is connected to the adjustment frame through a set of adjustment screws (309). The adjustment screws (309) pass through the adjustment frame and are connected to the wedge block (310). The fixed bearing seat and the sliding bearing seat are used to place the roller.

5. The dual-servo controllable biomass pelletizer as described in claim 1, characterized in that, The drive assembly (4) includes a roller drive motor (401), preferably a drive servo motor. The fixed support is a motor support (311). The roller drive motor (401) is fixed on the motor support (311) by a roller drive motor fixing seat (402). The motor support (311) is provided with several threaded holes to realize the position of the roller drive motor fixing seat (402) on the motor support (311) by bolts and threaded holes.

6. The dual-servo controllable biomass pelletizer as described in claim 1, characterized in that, Each ring of protrusions is composed of an array of several bosses (510), and each ring of grooves is composed of an array of several concave holes. The concave holes are through holes, with the bottom being through holes and the top being chamfered.

7. The dual-servo controllable biomass pelletizer as described in claim 1, characterized in that, The adjusting screw assembly (309) includes adjusting screw A and adjusting screw B. Adjusting screw A is threadedly connected to the adjusting frame and then contacts the connecting hole A in the wedge block (310). Adjusting screw B is threadedly connected to the adjusting frame and then threadedly connected to the threaded hole in the wedge block (310). The depth of the connecting hole A in the wedge block (310) is less than the depth of the threaded hole.

8. The dual-servo controllable biomass pelletizer as described in claim 4, characterized in that, The adjustment frame includes adjustment frame A (305) and adjustment frame B (306). Adjustment frame A (305) is set on the upper cover (301), and adjustment frame B (306) is set on the base frame (302). After the upper cover (301) and the base frame (302) are connected and fixed, adjustment frame A (305) and adjustment frame B (306) are joined together to form an integral rectangular adjustment frame.

9. A dual-servo controllable biomass pelletizer as described in claim 4, characterized in that, The upper cover (301) includes a cover body, and an upper cover connecting plate (312) is provided on the top surface of the cover body. The upper cover connecting plate (312) is a connecting plate with an opening in the middle, which is used to connect with the feeding mechanism (1).

10. A dual-servo controllable biomass pelletizer as described in claim 6, characterized in that, The boss (510) is a concave structure with an arc-shaped concave surface at the bottom.

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