Bio-organic fertilizer granulation device

Abstract

The invention relates to the technical field of granulation equipment, and discloses a bio-organic fertilizer granulation device which comprises a granulation box, a fixed granulation roller is rotatably mounted in the granulation box, an adjustable granulation roller is movably mounted in the granulation box, a transmission shaft is movably mounted at any end, in the axial direction of the fixed granulation roller, of the granulation box, and a transmission shaft is movably mounted at the other end of the granulation box. The transmission shaft is fixedly sleeved with a driving gear and a driving chain wheel, and the ends, close to the driving gear, of the fixed granulation roller and the adjustable granulation roller are fixedly sleeved with driven gears. According to the bio-organic fertilizer granulation device, the two adjusting worm gears are driven to rotate through the distance adjusting mechanism, so that the two transmission swing arms are driven to deflect, the position of the adjustable granulation roller is adjusted along the two ends, the gap between the adjustable granulation roller and the fixed granulation roller is adjusted, and the adjustment mode is stable in adjustment and high in precision; and the gap between the driven gear and the driving gear does not change, so that the influence on the gear transmission precision and the abrasion loss is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of granulation equipment, in particular to a biological organic fertilizer granulation device. Background Art

[0002] Bio-organic fertilizer is a new type of fertilizer that combines organic nutrients, microbial activity and soil improvement functions. It is made from animal and plant residues such as livestock and poultry manure and crop straw. After harmless treatment and composting, it is compounded with specific functional microorganisms. This fertilizer has the dual effects of microbial fertilizer and organic fertilizer. It can effectively utilize the nutrients in the soil, increase crop yields, and reduce the amount of chemical fertilizers used; therefore, bio-organic fertilizer has been widely used in agriculture.

[0003] In the production and preparation process of biological organic fertilizer, in order to prevent the powdered organic fertilizer from getting damp and agglomerating, and at the same time, for the convenience of use and not being easily blown away by the wind during the spraying process, it is usually necessary to prepare the powdered organic fertilizer into granules. Among them, the double-roll extrusion granulator is a more common granulation equipment. Because it adopts the double-roll extrusion method, the granules prepared by it have higher strength, low energy consumption and high output, which is more conducive to the connection and transformation with the existing production process.

[0004] In the actual production process of granulation, in order to meet the needs of production and use, the gap between the two sets of rollers needs to be adjusted according to the particle size of the bio-organic fertilizer granulation: stop the machine and remove the pressure caps at both ends of the passive shaft, rotate the two eccentric sleeves inside in the same direction, and then adjust the gap between the two sets of rollers. However, this adjustment method requires precise control of the rotation angle of the two eccentric sleeves, and during the adjustment process, it is very easy to cause the gap between the two sets of rollers to be large at one end and small at the other end due to the deviation of the rotation angle, which seriously affects the forming rate and strength of the particles of the roller extrusion granulator; in addition, the two sets of rollers in the existing roller extrusion granulator adopt a gear transmission method, and after adjusting the gap between the two sets of rollers, the gap between the gear at the end of the roller and the driving gear is reduced, which is very easy to cause gear wear, resulting in a decrease in gear meshing accuracy, affecting the accuracy of roller granulation. Summary of the invention

[0005] The object of the present invention is to provide a bio-organic fertilizer granulating device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a biological organic fertilizer granulation device, comprising a granulation box, a fixed granulation roller is rotatably installed inside the granulation box, and an adjustable granulation roller is movably installed, a transmission shaft is movably installed at either end of the granulation box along the axial direction of the fixed granulation roller, and a driving gear and a driving sprocket are fixedly sleeved on the outside of the transmission shaft, and the fixed granulation roller and the adjustable granulation roller are fixedly sleeved on one end close to the driving gear with a driven gear, and the granulation box is movably installed with a transmission swing arm at both ends along the axial direction of the fixed granulation roller, one end of the transmission swing arm is fixedly sleeved with an adjusting worm gear, and the other end is movably connected to the adjustable granulation roller, and a spacing adjustment mechanism is arranged on the outside of the granulation box along either side of the axial direction of the fixed granulation roller, which is used to drive the transmission swing arm to deflect, and an arc groove cooperating with the adjustable granulation roller is provided on the granulation box; The spacing adjustment mechanism includes a mounting back plate fixedly mounted on the granulation box, both ends of the mounting back plate are movably mounted with adjustment worms, one end of the adjustment worm close to the mounting back plate is fixedly sleeved with a passive synchronous gear, an active synchronous gear is movably mounted on the middle of the mounting back plate, the passive synchronous gear and the active synchronous gear are meshed with a synchronous belt on the outside, an adjustment disk is clamped on the middle of the active synchronous gear, a locking tube and a compressed air telescopic tube are fixedly mounted on the mounting back plate, and the locking tube and the compressed air telescopic tube are in a connected state, an air guide hole is opened on the peripheral side of the locking tube, and a rubber sleeve is sleeved on the outside of the locking tube.

[0007] Preferably, the granulation box is fixedly mounted with bearing seats 2 at both ends of the fixed granulation roller along the axial direction, the fixed granulation roller is movably mounted on the granulation box through the bearing seats 2, and the fixed granulation roller and the adjustable granulation roller are both provided with uniformly distributed granulation cavities, and the biological organic fertilizer can be extruded and granulated through the granulation cavities when the fixed granulation roller and the adjustable granulation roller rotate.

[0008] Preferably, the transmission shaft is located above the middle of the two driven gears, and the driving gear outside the transmission shaft is meshed with the two driven gears. When the driving sprocket drives the transmission shaft and the driving gear to rotate, the two driven gears can be driven to rotate synchronously, thereby driving the fixed granulation roller and the adjustable granulation roller to rotate for granulation.

[0009] Preferably, the granulation box is fixedly installed with mounting seats at both ends along the axial direction of the fixed granulation roller, the end of the transmission swing arm close to the adjusting worm gear is movably mounted on the mounting seat, the mounting seat close to one end of the driven gear is mounted on the outside of the transmission shaft, and the mounting seat is located on the central axis of the transmission shaft, and the adjustable granulation roller drives the driven gear to rotate with the central axis of the transmission shaft and the driving gear as the axis point, so as to adjust the gap between the fixed granulation roller and the adjustable granulation roller.

[0010] Preferably, the transmission swing arm is fixedly mounted with a bearing seat at one end away from the adjusting worm gear, the adjustable granulation roller is movably connected to the transmission swing arm via the bearing seat, the granulation box is fixedly mounted with a guide rail cooperating with the transmission swing arm, and the transmission swing arm is slidably mounted on the guide rail at one end away from the adjusting worm gear, and the transmission swing arm is auxiliary restricted by the guide rail to ensure the stability of the transmission swing arm during deflection adjustment.

[0011] Preferably, both ends of the mounting back plate are provided with positioning sleeves that cooperate with the adjusting worms, and the two adjusting worms cooperate one by one with the adjusting worm wheels on the two transmission swing arms. The spiral directions of the two adjusting worms are opposite, so that the rotation directions of the two adjusting worm wheels are opposite, thereby realizing the same-direction adjustment of the two transmission swing arms.

[0012] Preferably, a plurality of positioning grooves are provided inside the active synchronous gear, and a positioning slider cooperating with the positioning groove is provided on the adjusting disk. The adjusting disk is transmission-connected to the active synchronous gear through the positioning slider and the positioning groove, and the active synchronous gear can slide axially in the middle of the adjusting disk. By pulling the adjusting disk to slide in the active synchronous gear, the matching state of the adjusting disk and the locking tube can be adjusted.

[0013] Preferably, the outer movable sleeve of the adjusting disk is provided with a compression spring, and the compression spring always applies elastic force to the adjusting disk, so that the adjusting disk has a tendency to move toward the side close to the active synchronous gear, which facilitates the resetting of the adjusting disk and is connected to the outside of the locking tube, thereby limiting the position of the adjusting disk and the active synchronous gear.

[0014] Preferably, an air guide tube is embedded in the mounting back plate, and one end of the air guide tube is fixedly connected to the locking tube, and the other end is fixedly connected to the compressed air expansion tube. After the adjustment disk is reset, the compressed air expansion tube is pressed to inject gas into the locking tube and conduct it along the air guide hole, so that the surrounding side of the rubber sleeve has a tendency to expand outward.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The bio-organic fertilizer granulation device drives the two adjusting worm gears to rotate through the spacing adjustment mechanism, thereby driving the two transmission swing arms to deflect, and adjusting the position of the adjustable granulation roller along both ends to adjust the gap between the adjustable granulation roller and the fixed granulation roller. This adjustment method is stable and has high precision, and there is no change in the gap between the driven gear and the driving gear, which avoids affecting the accuracy and wear of the gear transmission.

[0016] 2. The bio-organic fertilizer granulation device can adjust the position of the adjustable granulation roller through two adjusting worms cooperating with the adjusting worm wheel and two spacing adjustment mechanisms, so as to realize stable and precise adjustment of the position of the adjustable granulation roller. The two adjusting worms rotate counter-rotating to each other. When the active synchronous gear rotates, the two adjusting worm wheels and the transmission swing arm can be synchronously adjusted, thereby reducing the difficulty of adjustment.

[0017] 3. The bio-organic fertilizer granulating device pulls the adjusting disk outward during adjustment to release the restriction of the rubber sleeve on the active synchronous gear. The active synchronous gear can adjust the active synchronous gear through the positioning slider and the positioning slide groove. After the adjustment, the adjusting disk is clamped on the outside of the rubber sleeve by the elastic force of the compression spring. The friction between the rubber sleeve and the adjusting disk limits the rotation of the adjusting disk. At the same time, after the adjusting disk is reset, it presses the compressed air telescopic tube, injects gas into the locking tube, and conducts it along the air guide hole, so that the surrounding side of the rubber sleeve has a tendency to expand outward, further improving the locking effect of the rubber sleeve on the adjusting disk, thereby ensuring the stability of the adjustable granulating roller after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of one side of the whole of the present invention; Figure 2 It is a structural schematic diagram of the other side of the whole invention; Figure 3 It is a schematic diagram of the structure of the fixed granulation roller and the adjustable granulation roller in the present invention; Figure 4 It is a structural schematic diagram of the installation position of the transmission swing arm in the present invention; Figure 5 It is a structural schematic diagram of the opening position of the arc groove in the present invention; Figure 6 It is a schematic diagram of the structure of the two ends of the transmission swing arm in the present invention; Figure 7 It is a structural schematic diagram of the spacing adjustment mechanism of the present invention; Figure 8 It is a structural schematic diagram of the installation position of the adjustment disk on the installation back plate in the present invention; Fig. 9 For the present invention Figure 8 A schematic diagram of the structure enlarged at A; Fig.10 It is a schematic diagram of the structure of the active synchronous gear and the adjustment disk in the present invention.

[0019] In the figure: 1. Granulation box; 2. Fixed granulation roller; 3. Adjustable granulation roller; 4. Driven gear; 5. Transmission shaft; 6. Driving gear; 7. Driving sprocket; 8. Spacing adjustment mechanism; 81. Installing back plate; 82. Adjusting worm; 83. Passive synchronous gear; 84. Active synchronous gear; 85. Synchronous belt; 86. Adjusting plate; 87. Compression spring; 88. Positioning slider; 89. Positioning slide; 810. Locking tube; 811. Rubber sleeve; 812. Air guide hole; 813. Compressed air expansion tube; 814. Air guide tube; 9. Mounting seat; 10. Transmission swing arm; 11. Bearing seat 1; 12. Guide rail; 13. Adjusting worm gear; 14. Bearing seat 2; 15. Arc groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 10 In an embodiment of the present invention, a bio-organic fertilizer granulation device includes a granulation box 1, a fixed granulation roller 2 is rotatably installed inside the granulation box 1, and an adjustable granulation roller 3 is movably installed. A transmission shaft 5 is movably installed at either end of the granulation box 1 along the axial direction of the fixed granulation roller 2, and the outside of the transmission shaft 5 is fixedly sleeved with a driving gear 6 and a driving sprocket 7, and the fixed granulation roller 2 and the adjustable granulation roller 3 are fixedly sleeved with a driven gear 4 at one end close to the driving gear 6, and the granulation box 1 is movably installed with a transmission swing arm 10 at both ends along the axial direction of the fixed granulation roller 2, one end of the transmission swing arm 10 is fixedly sleeved with an adjusting worm gear 13, and the other end is movably connected to the adjustable granulation roller 3, and the outside of the granulation box 1 is fixedly sleeved with a driving gear 6 and a driving sprocket 7. A spacing adjustment mechanism 8 is provided on either side of the direction, and the spacing adjustment mechanism 8 drives two adjusting worm gears 13 to rotate, thereby driving two transmission swing arms 10 to deflect, and adjusting the position of the adjustable granulating roller 3 along both ends to adjust the gap between the adjustable granulating roller 3 and the fixed granulating roller 2. An arc groove 15 cooperating with the adjustable granulating roller 3 is provided on the granulating box 1. The adjustable granulating roller 3 drives the driven gear 4 to rotate with the central axis of the transmission shaft 5 and the driving gear 6 as the axis point to adjust the gap between the fixed granulating roller 2 and the adjustable granulating roller 3. During the adjustment, the gap between the driving gear 6 and the driven gear 4 at the end of the adjustable granulating roller 3 does not change, so as to avoid affecting the accuracy and wear of the gear transmission; The spacing adjustment mechanism 8 includes a mounting back plate 81 fixedly mounted on the granulation box 1, and adjusting worms 82 are movably mounted on both ends of the mounting back plate 81. A passive synchronous gear 83 is fixedly mounted on one end of the adjusting worm 82 close to the mounting back plate 81, and an active synchronous gear 84 is movably mounted on the middle of the mounting back plate 81. The passive synchronous gear 83 and the active synchronous gear 84 are meshed with a synchronous belt 85 on the outer meshing sleeve. The position of the adjustable granulation roller 3 is adjusted by the two adjusting worms 82 cooperating with the adjusting worm wheel 13 and the two spacing adjustment mechanisms 8, so that the position of the adjustable granulation roller 3 can be adjusted stably and precisely. The two adjusting worms 82 are counter-rotating to each other. When the active synchronous gear 84 rotates, the two adjusting worm wheels 13 and the transmission swing arm 10 can be synchronously adjusted. The active synchronous An adjusting disk 86 is clamped in the middle of the step gear 84, and a locking tube 810 and a compressed air telescopic tube 813 are fixedly installed on the mounting back plate 81, and the locking tube 810 and the compressed air telescopic tube 813 are in a communicating state. An air guide hole 812 is provided on the peripheral side of the locking tube 810, and a rubber sleeve 811 is sleeved on the outside of the locking tube 810. After adjustment, the adjusting disk 86 is clamped on the outside of the rubber sleeve 811 by the elastic force of the compression spring 87, and the rotation of the adjusting disk 86 is limited by the friction between the rubber sleeve 811 and the adjusting disk 86. At the same time, after the adjusting disk 86 is reset, it presses on the compressed air telescopic tube 813, injects gas into the locking tube 810, and conducts gas along the air guide hole 812, so that the peripheral side of the rubber sleeve 811 has a tendency to expand outward, thereby improving the locking effect of the rubber sleeve 811 on the adjusting disk 86.

[0022] As a further implementation scheme of the above invention: the granulation box 1 is fixedly installed with bearing seats 14 at both ends of the fixed granulation roller 2 along the axial direction, the fixed granulation roller 2 is movably installed on the granulation box 1 through the bearing seats 14, the position of the fixed granulation roller 2 is limited by the bearing seats 14 to ensure that the fixed granulation roller 2 can rotate stably to perform granulation operations, and the fixed granulation roller 2 and the adjustable granulation roller 3 are both provided with uniformly distributed granulation cavities, and the fixed granulation roller 2 and the adjustable granulation roller 3 can extrude and granulate the biological organic fertilizer through the granulation cavity when the fixed granulation roller 2 and the adjustable granulation roller 3 rotate.

[0023] As a further implementation scheme of the above invention: the transmission shaft 5 is located above the middle of the two driven gears 4, and the driving gear 6 outside the transmission shaft 5 is meshed with the two driven gears 4. When the driving sprocket 7 drives the transmission shaft 5 and the driving gear 6 to rotate, the two driven gears 4 can be driven to rotate synchronously, thereby driving the fixed granulating roller 2 and the adjustable granulating roller 3 to rotate for granulation.

[0024] As a further implementation scheme of the above invention: the granulation box 1 is fixedly installed with mounting seats 9 at both ends of the fixed granulation roller 2 along the axial direction, and the end of the transmission swing arm 10 close to the adjusting worm gear 13 is movably mounted on the mounting seat 9 to ensure that the transmission swing arm 10 is firmly mounted on the granulation box 1 and can rotate stably. The mounting seat 9 close to one end of the driven gear 4 is mounted on the outside of the transmission shaft 5, and the mounting seat 9 is located on the central axis of the transmission shaft 5. The adjustable granulation roller 3 drives the driven gear 4 to rotate with the central axis of the transmission shaft 5 and the driving gear 6 as the axis point, so as to adjust the gap between the fixed granulation roller 2 and the adjustable granulation roller 3. During the adjustment, the gap between the driving gear 6 and the driven gear 4 at the end of the adjustable granulation roller 3 does not change, thereby avoiding affecting the accuracy and wear of the gear transmission.

[0025] As a further implementation scheme of the above invention: the end of the transmission swing arm 10 away from the adjusting worm gear 13 is fixedly mounted with a bearing seat 11, and the adjustable granulating roller 3 is movably connected to the transmission swing arm 10 through the bearing seat 11, so as to ensure that the adjustable granulating roller 3 can rotate freely and at the same time ensure that the transmission swing arm 10 can drive the adjustable granulating roller 3 to move, so as to adjust the gap between the fixed granulating roller 2 and the adjustable granulating roller 3, and the granulating box 1 is fixedly mounted with a guide rail 12 which cooperates with the transmission swing arm 10, and the end of the transmission swing arm 10 away from the adjusting worm gear 13 is slidably mounted on the guide rail 12, and the transmission swing arm 10 is auxiliary restricted by the guide rail 12 to ensure the stability of the transmission swing arm 10 during deflection adjustment.

[0026] As a further implementation scheme of the above invention: both ends of the mounting back plate 81 are provided with positioning sleeves that cooperate with the adjusting worm 82. The positioning sleeves can be used to stably limit the adjusting worm 82 to ensure the stability of the adjusting worm 82 during operation. The two adjusting worms 82 cooperate one by one with the adjusting worm wheels 13 on the two transmission swing arms 10. The spiral directions of the two adjusting worms 82 are opposite. When the active synchronous gear 84 rotates, the two passive synchronous gears 83 can be driven to rotate in the same direction through the synchronous toothed belt 85. The spirals of the two adjusting worms 82 are set in opposite directions, so that the rotation directions of the two adjusting worm wheels 13 are opposite, thereby realizing the same-direction adjustment of the two transmission swing arms 10.

[0027] As a further implementation scheme of the above invention: a plurality of positioning grooves 89 are provided inside the active synchronous gear 84, and a positioning slider 88 cooperating with the positioning groove 89 is provided on the adjusting disk 86. The adjusting disk 86 is connected to the active synchronous gear 84 through the positioning slider 88 and the positioning groove 89, and the transmission is carried out through the positioning slider 88 and the positioning groove 89 to ensure that the adjusting disk 86 can drive the active synchronous gear 84 to rotate, so as to adjust the position of the adjustable granulating roller 3, and the active synchronous gear 84 can slide axially in the middle of the adjusting disk 86, and the adjusting disk 86 is pulled to slide in the active synchronous gear 84, so as to adjust the matching state of the adjusting disk 86 and the locking tube 810.

[0028] As a further implementation scheme of the above invention: the external movable sleeve of the adjusting disk 86 is provided with a compression spring 87, and the compression spring 87 always applies elastic force to the adjusting disk 86, so that the adjusting disk 86 has a tendency to move toward the side close to the active synchronous gear 84. The elastic force applied to the adjusting disk 86 by the compression spring 87 facilitates the adjustment disk 86 to be reset and connected to the outside of the locking tube 810, thereby limiting the position of the adjusting disk 86 and the active synchronous gear 84, and ensuring the stability of the adjustable granulating roller 3 after the position is adjusted.

[0029] As a further implementation scheme of the above invention: an air guide tube 814 is embedded in the installation back plate 81, and one end of the air guide tube 814 is fixedly connected to the locking tube 810, and the other end is fixedly connected to the compressed air telescopic tube 813. After the adjustment disk 86 is reset, it presses the compressed air telescopic tube 813, injects gas into the locking tube 810, and conducts it along the air guide hole 812, so that the surrounding side of the rubber sleeve 811 has a tendency to expand outward, further improving the locking effect of the rubber sleeve 811 on the adjustment disk 86.

[0030] During specific implementation: when granulating the biological organic fertilizer, the biological organic fertilizer falls between the fixed granulation roller 2 and the adjustable granulation roller 3, and the driving sprocket 7, the transmission shaft 5 and the active gear 6 are driven to rotate through the driving mechanism in the prior art, thereby driving the two driven gears 4 to rotate synchronously, driving the fixed granulation roller 2 and the adjustable granulation roller 3 to rotate synchronously toward the inside, and the biological organic fertilizer is extruded and granulated through the granulation cavity on the fixed granulation roller 2 and the adjustable granulation roller 3; when it is necessary to adjust the gap between the fixed granulation roller 2 and the adjustable granulation roller 3, pull the adjusting disk 86 to move outward to release the clamping state of the adjusting disk 86 and the locking tube 810, and the adjusting disk 86 drives the active synchronous gear 84 to rotate through the positioning slider 88 and the positioning slide groove 89, drives the synchronous toothed belt 85 to rotate, and then drives the two passive synchronous gears 83 and the adjusting worm 82 to rotate. Since the spiral directions of the two adjusting worms 82 are opposite, when the two adjusting worms 82 rotate, the two adjusting worm wheels 13 can be driven to rotate in opposite directions. The adjustable granulating roller 3 is driven to move, thereby driving the two transmission swing arms 10 to deflect synchronously, driving the adjustable granulating roller 3 to slide in the arc groove 15, and adjusting the gap between the fixed granulating roller 2 and the adjustable granulating roller 3; after the position of the adjustable granulating roller 3 is adjusted, the adjusting disk 86 is reset by the elastic force of the compression spring 87, and the end of the adjusting disk 86 is clamped to the outside of the locking tube 810 again, and the friction between the rubber sleeve 811 and the adjusting disk 86 limits the rotation of the adjusting disk 86, and at the same time, the adjusting disk 86 is clamped to the outside of the locking tube 810. During the adjustment process, the adjusting disk 86 presses the compressed air expansion tube 813, and the gas inside the compressed air expansion tube 813 is pressed into the locking tube 810 along the air guide tube 814, and is conducted through a plurality of air guide holes 812, so that the peripheral side of the rubber sleeve 811 has a tendency to expand outward, thereby improving the locking effect of the rubber sleeve 811 on the adjusting disk 86, realizing the locking of the active synchronous gear 84, the synchronous toothed belt 85, the passive synchronous gear 83 and the adjusting worm 82, thereby ensuring the stability of the adjustable granulating roller 3 after adjustment.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A bio-organic fertilizer granulation device, comprising a granulation box (1), wherein a fixed granulation roller (2) is rotatably mounted inside the granulation box (1), and an adjustable granulation roller (3) is movably mounted thereon, wherein a transmission shaft (5) is movably mounted on either end of the granulation box (1) along the axial direction of the fixed granulation roller (2), and a driving gear (6) and a driving sprocket (7) are fixedly sleeved on the outside of the transmission shaft (5), and a driven gear (4) is fixedly sleeved on one end of the fixed granulation roller (2) and the adjustable granulation roller (3) near the driving gear (6), wherein: The granulation box (1) is provided with a transmission swing arm (10) movably mounted at both ends along the axial direction of the fixed granulation roller (2); one end of the transmission swing arm (10) is fixedly sleeved with an adjusting worm gear (13), and the other end is movably connected to the adjustable granulation roller (3); the outside of the granulation box (1) is provided with a spacing adjustment mechanism (8) on either side along the axial direction of the fixed granulation roller (2) for driving the transmission swing arm (10) to deflect; the granulation box (1) is provided with an arc groove (15) that cooperates with the adjustable granulation roller (3); The spacing adjustment mechanism (8) comprises a mounting back plate (81) fixedly mounted on the granulation box (1), with adjustment worms (82) movably mounted on both ends of the mounting back plate (81), a passive synchronous gear (83) fixedly sleeved on one end of the adjustment worm (82) close to the mounting back plate (81), an active synchronous gear (84) movably mounted on the middle of the mounting back plate (81), a synchronous toothed belt (85) being sleeved on the outer meshing surfaces of the passive synchronous gear (83) and the active synchronous gear (84), an adjustment disk (86) being clamped on the middle of the active synchronous gear (84), a locking tube (810) and a compressed air telescopic tube (813) being fixedly mounted on the mounting back plate (81), the locking tube (810) and the compressed air telescopic tube (813) being in a communicating state, an air guide hole (812) being provided on the peripheral side of the locking tube (810), and a rubber sleeve (811) being sleeved on the outer surface of the locking tube (810).

2. A biological organic fertilizer granulation device according to claim 1, characterized in that: The granulation box (1) is fixedly provided with bearing seats (14) at both ends along the axial direction of the fixed granulation roller (2); the fixed granulation roller (2) is movably mounted on the granulation box (1) via the bearing seats (14); and the fixed granulation roller (2) and the adjustable granulation roller (3) are both provided with uniformly distributed granulation cavities.

3. A biological organic fertilizer granulation device according to claim 1, characterized in that: The transmission shaft (5) is located above the middle of the two driven gears (4), and the driving gear (6) outside the transmission shaft (5) is meshed with the two driven gears (4).

4. A biological organic fertilizer granulation device according to claim 3, characterized in that: The granulation box (1) is fixedly provided with mounting seats (9) at both ends along the axial direction of the fixed granulation roller (2); the end of the transmission swing arm (10) close to the adjusting worm gear (13) is movably mounted on the mounting seat (9); the mounting seat (9) close to the end of the driven gear (4) is mounted on the outside of the transmission shaft (5), and the mounting seat (9) is located on the central axis of the transmission shaft (5).

5. A biological organic fertilizer granulation device according to claim 1, characterized in that: The end of the transmission swing arm (10) away from the adjusting worm gear (13) is fixedly sleeved with a bearing seat (11); the adjustable granulation roller (3) is movably connected to the transmission swing arm (10) via the bearing seat (11); a guide slide rail (12) cooperating with the transmission swing arm (10) is fixedly mounted on the granulation box (1); and the end of the transmission swing arm (10) away from the adjusting worm gear (13) is slidably mounted on the guide slide rail (12).

6. A biological organic fertilizer granulation device according to claim 1, characterized in that: Both ends of the mounting back plate (81) are provided with positioning sleeves that cooperate with the adjusting worm (82), the two adjusting worms (82) cooperate with the adjusting worm wheels (13) on the two transmission swing arms (10) one by one, and the spiral directions of the two adjusting worms (82) are opposite.

7. A biological organic fertilizer granulation device according to claim 1, characterized in that: A plurality of positioning slots (89) are provided inside the active synchronous gear (84), and a positioning slider (88) cooperating with the positioning slots (89) is provided on the adjusting disk (86). The adjusting disk (86) is transmission-connected to the active synchronous gear (84) via the positioning slider (88) and the positioning slots (89), and the active synchronous gear (84) can slide axially in the middle of the adjusting disk (86).

8. A biological organic fertilizer granulation device according to claim 1, characterized in that: The outer movable sleeve of the adjustment disk (86) is provided with a compression spring (87), and the compression spring (87) always applies elastic force to the adjustment disk (86), so that the adjustment disk (86) has a tendency to move toward a side close to the active synchronous gear (84).

9. A biological organic fertilizer granulation device according to claim 1, characterized in that: An air guide tube (814) is nested in the mounting back plate (81), and one end of the air guide tube (814) is fixedly connected to the locking tube (810), and the other end of the air guide tube (814) is fixedly connected to the compressed air telescopic tube (813).

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