Industrial hemp stem crushing roller meshing clearance adjusting device

Abstract

The utility model relates to the field of agricultural machinery, in particular to an industrial hemp stem crushing roller meshing clearance adjusting device, a stem crushing roller belongs to a core component of an industrial hemp stem crushing machine, a stem crushing roller clearance is a core parameter for determining the stem crushing quality, and therefore whether the stem crushing roller meshing clearance adjusting device can accurately control the meshing clearance of the stem crushing roller or not is particularly important. The device comprises a piston type trimmer, an upper limiting plate, a movable rack, a lower limiting plate and a guide rail, the piston type trimmer is connected to the upper limiting plate in a threaded mode, the upper limiting plate and the lower limiting plate are sequentially welded to the upper position of the guide rail from top to bottom, and the piston type trimmer comprises an adjusting bolt, an adjusting cover, a spring seat, a pressure spring and a pressing block. The stem crushing device is characterized in that the meshing clearance of the stem crushing rollers is accurately controlled through micro adjustment of the piston type fine adjuster, overload and blockage caused by the fact that thin stalks cannot be crushed and thick stalks cannot smoothly pass through the clearance of the stem crushing rollers are effectively prevented, and the technical problems that an existing roller body is prone to blockage and overload, and the thin stalks are not thoroughly crushed are solved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a gap adjustment device for use in an industrial hemp stalk crusher. Background Technology

[0002] Before the industrial hemp fibers are separated from the stripping roller, they must first be crushed and rubbed by the stalk crushing roller to break the plant stems and loosen the outer fiber (phloem) from the inner hemp fiber (xylem). Since the diameter of industrial hemp stems is generally between 5-12mm, experiments have shown that the optimal crushing effect is achieved when the meshing gap of the stalk crushing roller is 0.6-0.8 times the minimum stem diameter. Therefore, the theoretical value of the toothed roller gap required for stems of 5mm and 12mm is different, and the fluctuation of the toothed roller gap caused by the different stem thickness is only within millimeters. Therefore, the adjusting spring should maintain a certain pressure regardless of the stem thickness. Existing technology does not provide a specific and detailed explanation of the fine adjustment of the meshing gap of the stalk crushing roller. Based on the original stalk crushing roller meshing gap adjustment device, this invention designs a stalk crushing roller meshing gap adjustment device with a piston-type fine adjuster, which solves the fine adjustment problem of the stalk crushing roller meshing gap adjustment device and greatly improves the working quality of the stalk crusher. Summary of the Invention

[0003] The purpose of this invention is to provide an industrial hemp shredder roller meshing gap adjustment device. The piston-type fine adjuster ensures that the gap adjustment spring has appropriate pressure under different working conditions, thereby keeping the shredder roller meshing gap within a reasonable range and improving the shredder quality.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: an industrial hemp shredder roller meshing gap adjustment device includes a piston-type fine adjuster, an upper limit plate, a movable frame, a lower limit plate, and a guide rail. The piston-type fine adjuster is screwed onto the upper limit plate. The upper limit plate and the lower limit plate are welded sequentially from top to bottom to the upper position of the guide rail. The movable frame is fitted onto the guide rail between the upper limit plate and the lower limit plate. The guide rail is welded above the shredder frame and perpendicular to the horizontal direction of the frame.

[0005] The piston-type fine adjuster includes an adjusting bolt, an adjusting cover, a spring seat, a pressure spring, and a pressure block. Inside the adjusting cover, the adjusting bolt, spring seat, pressure spring, and pressure block are arranged sequentially from top to bottom. The two ends of the pressure spring are welded to the spring seat and the pressure block, respectively. The pressure block has a vertical floating stroke between 0-6 mm. Attached Figure Description

[0006] Figure 1 : Installation diagram of the gap adjustment device;

[0007] Figure 2 : Front view of the gap adjustment device;

[0008] Figure 3 Cross-sectional view of a piston-type fine-tuner.

[0009] The following are the annotations in the attached diagram: 1. Piston-type fine adjuster, 2. Upper limit plate, 3. Movable frame, 4. Lower limit plate, 5. Guide rail, 6. Adjusting bolt, 7. Adjusting cover, 8. Spring seat, 9. Pressure spring, 10. Pressure block. Detailed Implementation

[0010] As shown in the figure, an industrial hemp shredder roller meshing gap adjustment device includes a piston-type fine adjuster 1, an upper limit plate 2, a movable frame 3, a lower limit plate 4, and a guide rail 5. The piston-type fine adjuster 1 is screwed onto the upper limit plate 2. The upper limit plate 2 and the lower limit plate 4 are welded to the upper part of the guide rail 5 from top to bottom. The movable frame 3 is fitted onto the guide rail 5 between the upper limit plate 2 and the lower limit plate 4. The guide rail 5 is welded above the shredder frame and is perpendicular to the horizontal direction of the frame.

[0011] The piston-type fine adjuster 1 includes an adjusting bolt 6, an adjusting cover 7, a spring seat 8, a pressure spring 9, and a pressure block 10. The adjusting cover 7 contains, from top to bottom, the adjusting bolt 6, spring seat 8, pressure spring 9, and pressure block 10. The two ends of the pressure spring 9 are welded to the spring seat 8 and the pressure block 10, respectively. The pressure block 10 has a vertical floating stroke between 0 and 6 mm.

[0012] Machines without piston-type fine adjusters are at their lowest point when no industrial hemp stalks are fed in. When stalks are fed in, the gap between the upper and lower stalk crushing rollers can fluctuate to handle stalks of similar thickness from the same batch. Whether it is thinner stalks overlapping or thicker stalks exceeding the average stalk thickness, they can easily pass through under the maximum overload gap of the spring, resulting in incomplete stalk crushing and poor stalk crushing effect.

[0013] This invention features a piston-type fine-tuning device. When the stems in this batch are relatively thin, rotating the adjusting bolt clockwise causes part of the threaded screw rod to extend within the adjusting cover, resulting in downward displacement of the spring seat. The spring seat applies pressure to the pressure spring, increasing its pressure. This pressure is transmitted to the movable frame via the pressure block, and then to the upper stem-crushing roller via the bearing seat screwed onto the movable frame. At this time, the force of the pressure spring presses the upper stem-crushing roller relatively tightly, making it difficult for two thinner stem segments to overlap and pass through the gap between the upper and lower stem-crushing rollers, thus achieving more thorough stem crushing. This is because when the upper stem-crushing roller is relatively loose, the overlap of two thinner stem segments is equivalent to a thicker stem. Alternatively, the upper stem-crushing roller can apply an upward force to the movable frame, causing the frame to move upward and easily pass through the gap between the upper and lower stem-crushing rollers. Similarly, thicker stems exceeding the average thickness of this batch can also easily pass through the gap between the upper and lower stem-crushing rollers. However, the instantaneous passage does not reach the experimental gap value for optimal crushing effect, thus failing to achieve the goal of thoroughly crushing the stems.

[0014] When the stems in this batch are relatively thick, rotating the adjusting bolt counterclockwise shortens part of the threaded screw section within the adjusting cover, causing the spring seat to shift upwards. This reduces the pressure exerted by the spring seat on the pressure spring, ultimately resulting in a looser pressure on the upper stem crushing roller. This reduces overload failure and blockage caused by excessive spring pressure, and also prevents other problems caused by excessive spring pressure and too small floating gaps, such as excessive crushing and damage caused by too small gaps between the upper and lower stem crushing rollers.

[0015] The lower limit plate and the upper limit plate control the minimum and maximum gap between the two rollers respectively, which limits the fluctuation of the gap between the two rollers and can improve the qualified rate of the crushed stems without damaging the hemp, overloading, or losing teeth.

[0016] This invention improves the quality and efficiency of fiber extraction, reduces the risk of hemp damage caused by repeated stem crushing, avoids the increase of fiber impurities caused by incomplete stem crushing, reduces the sorting difficulty of subsequent hemp fiber extraction by stripping rollers, and at the same time, the lower unit output energy consumption also meets the requirements of green production, that is, reducing raw material waste and ultimately achieving the production goals of high efficiency, low consumption and high quality.

Claims

1. A device for adjusting the meshing gap of industrial hemp stalk crushing rollers, characterized in that: The device includes a piston-type fine adjuster (1), an upper limit plate (2), a movable frame (3), a lower limit plate (4), and a guide rail (5). The piston-type fine adjuster (1) is screwed onto the upper limit plate (2). The upper limit plate (2) and the lower limit plate (4) are welded from top to bottom to the upper part of the guide rail (5). The movable frame (3) is fitted onto the guide rail (5) between the upper limit plate (2) and the lower limit plate (4). The guide rail (5) is welded above the frame of the shredder and is perpendicular to the horizontal direction of the frame.

2. The industrial hemp stalk crushing roller meshing gap adjustment device according to claim 1, characterized in that: The piston-type fine adjuster (1) includes an adjusting bolt (6), an adjusting cover (7), a spring seat (8), a pressure spring (9), and a pressure block (10). The adjustment cover (7) is provided with an adjustment bolt (6), a spring seat (8), a pressure spring (9) and a pressure block (10) arranged from top to bottom. The two ends of the pressure spring (9) are welded to the spring seat (8) and the pressure block (10) respectively. The pressure block (10) has a vertical floating stroke between 0-6mm.

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