Bio-organic fertilizer granulation extrusion roller adjusting device

Abstract

The utility model discloses an adjusting device for a bio-organic fertilizer granulation extrusion roller, which is improved on the basis of the original structure and comprises a V-shaped bottom plate, a base, an axial adjusting bolt, a radial adjusting bolt and a circumferential adjusting device. The V-shaped bottom plate and the bearing seat are fastened into a whole, and a downward V-shaped protrusion is machined in the middle of the V-shaped bottom plate. A V-shaped groove matched with the V-shaped protrusion is machined in the base. Radial adjusting bolts are installed at the outer side end of the base, and axial adjusting bolts are installed on the base. The circumferential adjusting device is installed at the gear end of the rotating shaft, the two pin blocks are matched with key grooves in the rotating shaft, the fixing plate is welded and fixed to the side face of the large gear, the circumferential adjusting bolts are installed, and the thrust of the two circumferential adjusting bolts acts on the pin blocks, so that the rotating directions of the rotating shaft are opposite. By screwing different bolts, fine adjustment in the axial direction, the radial direction and the circumferential direction of the extrusion roller is achieved, and therefore good matching of the grooves is achieved.

Description

Technical Field

[0001] This utility model applies to the field of bio-organic fertilizer manufacturing, and relates to an extrusion granulator, specifically an extrusion roller adjustment device for a granulator. Background Technology

[0002] Organic fertilizers are mostly made from a mixture of animal manure, plant waste, and elemental fertilizers. To facilitate application and ensure long-lasting effects, they are often extruded into granules. Granulators commonly use double-roller extrusion granulators, which process grooves of different shapes, such as round and elliptical, on the extrusion rollers to produce solid organic fertilizer granules with consistent shape and good appearance. A large gap between the two rollers can cause thin edges in the granules, placing greater pressure on subsequent rounding. If the grooves on the two extrusion rollers misalign, the solid granules will be misaligned, resulting in poor appearance and quality. In actual production, equipment maintenance, vibrations during operation, and gaps in the fit can all cause axial, radial, and circumferential offsets in the extrusion rollers. These minute offsets are extremely tedious and time-consuming to adjust in practice.

[0003] CN116371292A describes a bio-organic fertilizer granulator. During the rotation of the adjusting nut, the pressure of the support moving outward under the spring force simultaneously moves the first conical blocks on both sides inward or outward, and simultaneously moves both ends of the second roller. This prevents one end from having a larger gap than the other when adjusting the gap between the first and second rollers. CN204208528U describes an organic fertilizer double-roller extrusion granulator. The fixed roller and movable roller are driven to rotate in opposite directions by a transmission device. The two ends of the movable roller are mounted on movable bearing seats. The bottom surface of the movable bearing seat has a horizontal groove parallel to the radial direction of the movable roller. A protrusion is provided inside the groove on the frame. The movable bearing seat moves horizontally along the protrusion via the groove, allowing the radial gap between the fixed roller and the movable roller to be adjusted. CN204208527U describes a double-roller granulator. A hydraulic cylinder drives an inclined wedge to slide on an inclined surface, causing the movable bearing seat and movable roller to move up and down, adjusting the gap between the movable roller and the fixed roller. The above-mentioned granulators can adjust the gap between the two extrusion rollers, but they are powerless to adjust the fit deviation of the groove in the axial and circumferential directions. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a biological organic fertilizer granulation extrusion roller adjustment device, which uses a thread to convert circumferential motion into linear movement, so as to realize micro-adjustment of the extrusion roller in the axial, radial and circumferential directions, and the adjustment is convenient and quick.

[0005] The technical solution adopted in this utility model is as follows: This utility model's biological organic fertilizer granulation extrusion roller adjustment device is a modification of the original structure, including a V-shaped base plate, a base, axial adjustment bolts, radial adjustment bolts, and a circumferential adjustment device. The V-shaped base plate is integrally fastened to the original bearing seat, and a downward V-shaped protrusion is machined in the middle of the V-shaped base plate. A V-shaped groove is machined on the base, which cooperates with the V-shaped protrusion to fix the extrusion roller in the radial direction. The base is fixed to the bracket by bolts passing through an elongated hole on the bracket, and is fixedly connected to the bracket. The elongated hole provides space for the bolts to move radially in the base. A steel plate is welded and fixed to the bracket at the outer end of the base, and a radial adjustment bolt is threaded onto the steel plate. Tightening the radial adjustment bolt allows for radial displacement of the base and the extrusion roller. The base is threaded with an axial adjustment bolt, and tightening the axial adjustment bolt allows for slight axial adjustment of the extrusion roller. The circumferential adjustment device is installed at the gear end of the rotating shaft, and the large gear at the gear end is fitted and rotatably connected to the rotating shaft.

[0006] Furthermore, the circumferential adjustment device includes an integral bushing and pin blocks, a fixing plate, and circumferential adjustment bolts. The bushing is fitted onto the rotating shaft, and the two pin blocks are symmetrically fixed on the bushing, engaging with the keyways on the rotating shaft to drive its rotation. The fixing plate and circumferential adjustment bolts are a matching pair; the fixing plate is welded to the side of the large gear, and the circumferential adjustment bolts are threaded onto it. When the two circumferential adjustment bolts are tightened, they contact the pin blocks, exerting opposite forces on the two pin blocks: one causes the rotating shaft to rotate clockwise, and the other causes it to rotate counterclockwise.

[0007] Furthermore, the two pins are connected to form a single pin bar, which passes through the shaft, allowing the shaft to rotate in both directions without using a bushing.

[0008] Furthermore, two axial adjustment bolts are provided at one end of each extrusion roller, and a small ball or wheel is installed at the end of one of the axial adjustment bolts to generate rolling friction with the end face of the extrusion roller, thereby limiting the extrusion roller and generating a small frictional force.

[0009] The beneficial effects of this invention are: by tightening different bolts, the extrusion rollers can be finely adjusted in the axial, radial, and circumferential directions, thereby achieving a good fit between the grooves on the two extrusion rollers. The bolt tightening and fine-tuning is convenient and quick. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0011] Figure 2 for Figure 1 A diagram showing the view from the right.

[0012] Figure 3 for Figure 1 A left-view diagram;

[0013] Figure 4 This is a schematic diagram of the circumferential adjustment of the extrusion roller;

[0014] Among them: 1-Extrusion roller, 2-Groove, 3-Rotating shaft, 4-Bearing seat, 5-Fastener, 6-V-shaped base plate, 7-Axial adjustment bolt, 8-Steel plate, 9-Bracket, 10-Radial adjustment bolt, 11-Pinary gear, 12-Upright plate, 13-External gear, 14-Shaft sleeve, 15-Circumferential adjustment bolt, 16-Large gear, 17-Oblong hole, 18-Base, 19-Spare nut, 20-Fixing plate, 21-Pin block. Detailed Implementation

[0015] The terms "small gear," "large gear," and "external gear" used below are merely for distinguishing gears. Structures not described in detail belong to existing technology, such as bearings, shafts, and extrusion rollers.

[0016] The structure of the extrusion roller adjustment device of this utility model is shown in the attached figure. Figure 1-4 As shown, the original extrusion roller structure is modified, including a V-shaped base plate 6, a base 18, an axial adjustment bolt 7, a radial adjustment bolt 10, and a circumferential adjustment device.

[0017] The extrusion roller structure includes two opposing extrusion rollers 1, bearing seats 4, and a gear transmission mechanism. Grooves 2 are machined on the outer surface of the extrusion rollers 1. These grooves 2 are evenly distributed and can be hemispherical or semi-ellipsoidal, resulting in extruded organic fertilizer granules that are regular spherical or ellipsoidal in shape. The extrusion rollers are keyed to a rotating shaft 3, which is supported at both ends by bearing seats 4, with the two connected by bearings. A gear transmission device is designed at one end of the rotating shaft, including an external gear 13, a small gear 11, and a large gear 16. The external gear 13 and the small gear 11 are coaxial and mounted on a vertical plate 12, which is fixed to a bracket 9. The two external gears 13 mesh with each other, and the small gear 11 meshes with the large gear 16. When the motor drives the external gears to rotate, the external gears drive the small gear, which in turn drives the large gear, causing the rotating shaft to rotate, thus realizing the rotation of the two extrusion rollers.

[0018] The original structure had the bearing seat 4 directly mounted on the bracket 9 via fasteners 5. This utility model adds a V-shaped base plate 6 and a base 18, as shown in the attached figure. Figure 2As shown. The bearing housing 4 is connected to the V-shaped base plate 6 as a whole by fasteners 5. The V-shaped base plate 6 has a downward V-shaped protrusion machined in the middle, and a V-shaped groove is machined on the base 18, which mates with the V-shaped protrusion of the V-shaped base plate. Bolts pass through the elongated holes 17 on the bracket to fix the base 18 to the bracket 9. The V-shaped groove has two functions: first, it guides and positions the extrusion roller, enabling quick positioning and installation of the extrusion roller through the cooperation of the V-shaped protrusion and the V-shaped groove; second, it restricts the radial displacement of the extrusion roller, causing the extrusion roller and the base to move in the same direction when the base 18 is slightly adjusted. A steel plate 8 is welded and fixed to the bracket at the outer end of the base 18 (the inner side is the side where organic fertilizer is extruded into granules, i.e., the mating side of the two extrusion rollers). A radial adjustment bolt 10 is threaded onto the steel plate 8. When the radial adjustment bolt 10 is screwed on, it can push the base slightly towards the inner side of the extrusion roller, and the elongated holes 17 provide space for the slight radial movement of the base. After the radial gap between the two extrusion rollers is adjusted to the correct position, tighten the bolts on the mounting base to fix the base, thereby achieving radial fixation of the extrusion rollers. Alternatively, a spare nut 19 can be installed on the radial adjustment bolt 10, and the spare nut 19 on the radial adjustment bolt 10 can be tightened simultaneously. The spare nut can prevent the radial adjustment bolt from loosening due to vibration, and can also transfer the radial force to the steel plate 8, reducing the stress on the threads and strengthening the fixation of the base.

[0019] An axial adjusting bolt 7 is threaded onto the base 18. When the axial adjusting bolt 7 is tightened, the thrust of the axial adjusting bolt 7 acts on the end face of the extrusion roller, which can push the extrusion roller to move slightly axially along with the bearing seat and the V-shaped base plate. The end face of the extrusion roller needs to have good flatness and good perpendicularity to the axis of rotation. In this invention, two axial adjusting bolts 7 are provided at one end of each extrusion roller. A small ball or wheel is installed at the end of one bolt, which generates rolling friction with the end of the extrusion roller. Fine adjustment is made with an axial adjusting bolt without a small ball or wheel, and then the axial adjusting bolt with a small ball or wheel is used for limiting.

[0020] The circumferential adjustment device is located at the gear end of the rotating shaft and includes a bushing 14, a pin block 21, a fixing plate 20, and a circumferential adjustment bolt 15. (See attached image) Figure 3 and attached Figure 4As shown, two large gears are mounted on the two rotating shafts. One gear is keyed to the rotating shaft, while the other is not keyed but rather fitted onto the rotating shaft, forming a rotatable connection. A circumferential adjustment device is located on the rotatably connected large gear and rotating shaft. The bushing 14 and pin 21 are an integral structure. The bushing 14 is fitted onto the rotating shaft to fix the pin 21, and the pins should ideally be symmetrically positioned on the bushing. The pin 21 engages with the keyway on the rotating shaft. When the pin rotates, it drives the rotating shaft to rotate, thereby driving the extrusion roller to rotate. The fixing plate 20 is welded to the side of the large gear 16 and threaded with a circumferential adjustment bolt 15. When the circumferential adjustment bolt 15 is tightened, the two pins 21 experience opposite forces; one can drive the rotating shaft to rotate clockwise, and the other can drive it to rotate counterclockwise. That is, when fine-tuning the circumferential adjustment of the extrusion roller, only one circumferential adjustment bolt 15 is tightened; they cannot be tightened simultaneously. After the circumferential adjustment is complete, the other circumferential adjustment bolt is tightened to contact the pin at the other end.

[0021] It cannot be denied that the connection between the other large gear and the shaft can also be changed from a key connection to a circumferential adjustment device connection. In fact, only one modification is needed to meet the purpose of micro-adjustment.

[0022] The two pins 21 mentioned above can be connected to form a single pin bar that passes through the rotating shaft. For ease of installation and disassembly, a bushing structure is not used.

[0023] This invention allows for fine-tuning of the extrusion rollers in three directions: axial, radial, and circumferential, through the tightening of bolts. Radial adjustment utilizes the reaction force of the bracket to adjust the gap between the two extrusion rollers via a fine-tuning base. Circumferential adjustment uses the reaction force of the base to directly fine-tune the extrusion rollers axially. Circumferential fine-tuning requires the use of the reaction force of a gear mechanism to rotate the extrusion rollers at a small angle, thus achieving circumferential fine-tuning.

[0024] In summary, after improvements based on the original design, this utility model allows for fine-tuning of the other extrusion roller in three directions—axial, radial, and circumferential—using one extrusion roller as a reference to achieve a good fit between the grooves of the two extrusion rollers, which can then be tightened and fixed. Even if deviations occur due to vibration or other reasons, adjustments can be made simply by turning the bolts. The adjustments are convenient and quick, taking up virtually no production time and requiring minimal production skills.

Claims

1. A biological organic fertilizer granulation extrusion roller adjustment device, characterized in that: Includes a V-shaped base plate (6), a base (18), axial adjustment bolts (7), radial adjustment bolts (10), and a circumferential adjustment device; The V-shaped base plate (6) is fastened to the bearing seat as a whole, and the V-shaped base plate (6) has a downward V-shaped protrusion machined in the middle; the base (18) has a V-shaped groove machined on it, and the V-shaped groove matches the V-shaped protrusion; the base (18) is fixed to the bracket by bolts passing through the elongated holes on the bracket; a steel plate is welded and fixed on the bracket at the outer end of the base (18), and a radial adjusting bolt (10) is threaded onto the steel plate; the base (18) is threaded onto the axial adjusting bolt (7). The circumferential adjustment device is installed on the gear end of the rotating shaft, and the large gear on the gear end is fitted with the rotating shaft and rotatably connected.

2. The biological organic fertilizer granulation extrusion roller adjustment device according to claim 1, characterized in that: The circumferential adjustment device includes an integral bushing (14) and pin blocks (21), a fixing plate (20) and circumferential adjustment bolts (15); the bushing (14) is fitted onto the rotating shaft, and the two pin blocks (21) are symmetrically fixed on the bushing (14) and cooperate with the keyway on the rotating shaft; the fixing plate (20) and the circumferential adjustment bolts (15) are two matching pieces, the fixing plate (20) is welded and fixed to the side of the large gear, and the circumferential adjustment bolts (15) are threaded on; when the two circumferential adjustment bolts (15) are screwed, they contact the pin blocks (21), and the forces acting on the two pin blocks (21) are opposite.

3. The biological organic fertilizer granulation extrusion roller adjustment device according to claim 2, characterized in that: The two pins (21) are connected to form a single integral pin bar without using a bushing (14).

4. The biological organic fertilizer granulation extrusion roller adjustment device according to claim 1, characterized in that: Two axial adjustment bolts (7) are provided at one end of each extrusion roller, and a ball or wheel is installed at the end of one of the axial adjustment bolts (7).

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