Adjustable straw crushing device

Abstract

The utility model provides a kind of adjustable straw crushing equipment, it includes lower shell, upper shell, crushing roller, adjusting mechanism, lower shell bottom is equipped with discharge gate, upper shell top is equipped with feed inlet, the number of crushing roller is two, transversely installed between lower shell and upper shell, adjusting mechanism is installed on lower shell and drives one of crushing roller to be close to or away from another crushing roller, two ends of lower shell are equipped with fixed bearing, and the other crushing roller is respectively inserted in fixed bearing inside.The utility model discloses the adjustable straw crushing equipment, by setting fixed bearing and fixing one crushing roller, and by adjusting mechanism drive another crushing roller relative to its accurate movement, the linear, continuous and smooth adjustment of the gap between two crushing rollers is realized, the adjustment process is intuitive, high in accuracy, and can keep two roll axes parallel, ensure the uniformity of crushing granularity and the stability of equipment operation;By the cooperation of groove and protrusion, the quick and accurate positioning for the assembly of equipment is provided.

Description

Technical Field

[0001] This utility model relates to the field of straw crushing technology, and in particular to an adjustable straw crushing device. Background Technology

[0002] In the process of utilizing crop straw resources, such as as feed, fertilizer or fuel raw materials, it is usually necessary to crush the straw to a specific particle size to meet the needs of different application scenarios. This places clear requirements on the adjustability and operating efficiency of crushing equipment.

[0003] To adjust the particle size of crushed straw, a common existing technology involves creating elongated holes in the side wall of the crushing chamber. The position of the crushing rollers is roughly moved and fixed by loosening and tightening the bolts passing through these holes and connecting them to the bearing housing of the crushing rollers. Another approach is to use a wedge-shaped block structure. By striking or pushing the wedges, the bearing housing is moved, thereby changing the gap between the two crushing rollers.

[0004] The existing technical solutions mentioned above usually require stopping the machine and using tools to perform multiple steps when adjusting particle size. The adjustment process is not intuitive and it is difficult to ensure that the axes of the two crushing rollers always move in parallel. This can easily cause uneven wear of the rollers and uneven gaps, affecting the stability of crushing quality and the service life of the equipment. It is difficult to meet the requirements for fast, accurate and reliable gap adjustment. Utility Model Content

[0005] The purpose of this invention is to propose an adjustable straw crushing device to solve the problems of low adjustment accuracy and difficulty in ensuring parallel movement of the rollers when adjusting the gap between the two crushing rollers in the existing straw crushing device.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows: An adjustable straw crushing device includes a lower shell, an upper shell, two crushing rollers, and an adjustment mechanism; the lower shell has a discharge port at its bottom and the upper shell has a feed port at its top; the two crushing rollers are arranged laterally between the lower shell and the upper shell; the adjustment mechanism is installed on the lower shell and connected to one of the crushing rollers to drive the crushing roller closer to or further away from the other crushing roller; fixed bearings are installed at both ends of the lower shell, and the two ends of the other crushing roller are respectively inserted into the fixed bearings.

[0007] By adopting the above technical solution, the fixed bearing provides a stable rotational support for one of the crushing rollers, fixing its position. The adjusting mechanism is connected to the other crushing roller. By driving the adjusting roller to move relative to the fixed roller, the gap between the two crushing rollers can be changed precisely and linearly, thereby achieving continuous and controllable adjustment of the crushed particle size. The operation is intuitive and convenient.

[0008] Furthermore, connecting plates extend outward from both sides of the lower shell and the upper shell respectively. The top of the connecting plate of the lower shell has a downward-facing groove, and the connecting plate of the upper shell has a protrusion that can be inserted into the groove.

[0009] By adopting the above technical solution, the cooperation between the groove and the protrusion provides initial positioning guidance for the closing and installation of the upper and lower shells, ensuring that the two can be quickly and accurately aligned, thus simplifying the equipment assembly process.

[0010] Furthermore, the connecting plate of the lower shell has a through hole, the connecting plate of the upper shell has a slot, a locking element is provided in the through hole and the slot, and a locking screw is installed on the side of the lower shell and the upper shell opposite to the connecting plate.

[0011] By adopting the above technical solution, the locking component can quickly lock one side of the upper and lower shells through the cooperation of the through hole and the slot, and the locking screw can be tightened from the other side, realizing multi-point and stable fixation of the upper shell, enhancing the overall rigidity of the equipment during crushing operations, and effectively suppressing vibration.

[0012] Furthermore, the locking element includes a bolt passing through the through hole and a U-shaped plate suspended in the slot, wherein the U-shaped plate has a through hole for the bolt to pass through.

[0013] By adopting the above technical solution, the U-shaped plate is directly suspended in the slot and locked by bolts passing through the through hole and the through hole. The structure is simple and reliable. The slot can effectively restrict the sliding of the U-shaped plate in a direction other than the bolt axis, ensuring the stability of the locking.

[0014] Furthermore, a U-shaped groove is provided on the upper shell, and a wing nut is provided at the top of the locking screw. The locking screw passes through the U-shaped groove, and the wing nut abuts against the top of the upper shell.

[0015] By adopting the above technical solution, during installation, the locking screw can be pre-rotated into the U-shaped groove before or after the cover is closed, and then the wing nut can be tightened to achieve locking. The U-shaped groove provides room for error during installation, and the wing nut is easy to operate manually, allowing for quick locking and loosening without tools.

[0016] Furthermore, the adjustment mechanism includes a mounting plate, a track, a slider, a movable bearing, and a lead screw; the mounting plate is disposed at one end of the lower shell, the track is fixed on the mounting plate, the slider is slidably disposed on the track, the movable bearing is fixedly mounted on the slider, and one of the crushing rollers passes through the movable bearing; one end of the lead screw passes through the slider and is threadedly connected to the slider, and the other end of the lead screw is rotatably disposed on the mounting plate.

[0017] By adopting the above technical solution, the rotational motion of the lead screw is converted into the linear motion of the slider along the track through the threaded joint, driving the moving bearing and the crushing roller passing through it to move smoothly and accurately. The track constrains the movement trajectory of the slider, ensuring that the axis of the crushing roller remains parallel to the axis of the fixed crushing roller during the movement, thereby guaranteeing the accuracy and reliability of the adjustment.

[0018] Furthermore, a vertical plate is vertically arranged on the mounting plate, and the lead screw passes through the vertical plate and is rotatably connected to the vertical plate.

[0019] By adopting the above technical solution, the vertical plate provides rotational support for the end of the lead screw away from the slider, sharing the deflection generated by the lead screw during rotation, improving the rigidity and stability of the lead screw transmission system, and helping to control the displacement of the slider more accurately.

[0020] Furthermore, a locking screw is provided on the side of the upright plate, and the end of the locking screw corresponds to the side wall of the lead screw.

[0021] By adopting the above technical solution, after the crushing roller is adjusted to the target gap by the lead screw, the locking screw can be tightened so that its end is tightly pressed against the side wall of the lead screw. The lead screw is locked by friction, which effectively prevents the lead screw from rotating unexpectedly during the vibration of the equipment, thereby maintaining the gap stability.

[0022] Furthermore, a motor is mounted on the movable bearing, and the motor is drivenly connected to the crushing roller that passes through the movable bearing.

[0023] By adopting the above technical solution, the motor directly drives the crushing roller connected to the moving bearing, so that the crushing roller can obtain a stable driving force no matter where it is in the adjustment range, ensuring that there is a necessary speed difference or torque between the two crushing rollers to achieve effective extrusion and shearing crushing.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The adjustable straw crushing equipment of this utility model features a fixed bearing that holds one crushing roller in place, while an adjustment mechanism drives another crushing roller to move precisely relative to it. This achieves linear, continuous, and stable adjustment of the gap between the two crushing rollers. The adjustment process is intuitive and highly precise, maintaining the parallelism of the two roller axes and ensuring uniform particle size and stable equipment operation. The grooves and protrusions on the connecting plate provide quick and accurate positioning for equipment assembly, simplifying the installation process. The upper shell is secured at multiple points using locking components and locking screws, significantly enhancing the overall rigidity and vibration resistance of the equipment and extending its service life. The adjustment mechanism, composed of a lead screw, rail, and slider, converts rotational motion into high-precision linear displacement. Combined with the vertical plate support and locking screws, this ensures precise and reliable gap adjustment and prevents loosening. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0026] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the adjustable straw crushing equipment described in this embodiment of the utility model; Figure 2 This is another schematic diagram of the adjustable straw crushing equipment described in this embodiment of the utility model; Figure 3 This is an exploded view of the locking component described in an embodiment of the present utility model; Figure 4 As described in the embodiments of this utility model Figure 4 Enlarged view of section A in the middle; Figure 5 This is a schematic diagram of the locking screw portion according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the adjustment mechanism described in an embodiment of the present utility model; Figure 7 This is an exploded view of the motor and movable bearing described in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures: 1. Lower shell; 2. Upper shell; 3. Crushing roller; 4. Discharge port; 5. Feed inlet; 6. U-shaped groove; 7. Adjustment mechanism; 701. Mounting plate; 702. Track; 703. Slider; 704. Moving bearing; 705. Lead screw; 8. Fixed bearing; 9. Connecting plate; 10. Groove; 11. Protrusion; 12. Through hole; 13. Slot; 14. Locking component; 1401. Bolt; 1402. U-shaped plate; 1403. Through hole; 15. Locking screw; 16. Wing nut; 17. Vertical plate; 18. Locking screw; 19. Motor. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "back" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] This embodiment relates to an adjustable straw crushing device, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, it includes a lower shell 1, an upper shell 2, a crushing roller 3, and an adjusting mechanism 7.

[0033] The lower shell 1 has a discharge port 4 at its bottom and the upper shell 2 has a feed port 5 at its top. There are two crushing rollers 3, which are installed horizontally between the lower shell 1 and the upper shell 2. An adjustment mechanism 7 is installed on the lower shell 1 and drives one of the crushing rollers 3 to move closer to or away from the other crushing roller 3. Fixed bearings 8 are installed at both ends of the lower shell 1, and the two ends of the other crushing roller 3 are respectively inserted into the fixed bearings 8.

[0034] It is worth mentioning that the feed inlet 5 is located between the two crushing rollers 3. After the straw enters through the feed inlet 5, the crushing rollers 3 directly crush the straw. The two crushing rollers 3 are arranged alternately at different heights, which ensures that the crushed straw is discharged towards the higher side. Therefore, the discharge outlet 4 of the lower shell 1 is located at the bottom of the higher crushing roller 3. This arrangement ensures that the structure can discharge in a concentrated manner, avoiding the straw from falling apart, thus facilitating collection. The adjustment mechanism 7 can adjust the distance between the two crushing rollers 3. The smaller the gap, the more times the straw is squeezed and sheared, and the finer the finished product; the larger the gap, the coarser the particle size, which can be adapted to different uses and can also crush different types of structures, such as corn straw, wheat straw, etc. The adjustment mechanism 7 adjusts one of the crushing rollers 3 while the other crushing roller 3 is fixed, thereby realizing the adjustment of the gap.

[0035] Based on the above overall introduction, an exemplary structure of this embodiment is as follows: Figure 3 and Figure 4 As shown, connecting plates 9 extend outward from both sides of the upper shell 2 and the lower shell 1. The top of the connecting plate 9 of the lower shell 1 has a downward-facing groove 10, and the connecting plate 9 of the upper shell 2 has a protrusion 11 that inserts into the groove 10. It should be noted that the connecting plates 9 are located on the side walls of the upper shell 2 and the lower shell 1. The purpose of the connecting plates 9 is to facilitate fixing the upper shell 2 and the lower shell 1 together. When the upper shell 2 is installed on the lower shell 1, the protrusion 11 needs to be inserted into the groove 10. This design can ensure the accuracy of the installation of the upper shell 2 and avoid misalignment during installation.

[0036] In addition, such as Figure 4 and Figure 5 As shown, a through hole 12 is provided on the connecting plate 9 of the lower shell 1, and a slot 13 is provided on the connecting plate 9 of the upper shell 2. A locking element 14 is provided in the through hole 12 and the slot 13. A locking screw 15 is installed on the side of the upper shell 2 and the lower shell 1 opposite to the connecting plate 9. Specifically, the locking element 14 is engaged in the through hole 12 and the slot 13, thereby fixing one side of the upper shell 2 and the lower shell 1. The locking screw 15 fixes the other side of the upper shell 2 and the lower shell 1. The locking screw 15 is rotatably mounted on the lower shell 1. The upper shell 2 has a U-shaped groove 6 for the locking screw 15 to pass through. The top of the locking screw 15 is provided with a wing nut 16 that abuts against the U-shaped groove 6. When the upper shell 2 is fastened to the lower shell 1, the locking screw 15 is rotated into the U-shaped groove 6, and then the wing nut 16 is rotated. The wing nut 16 and the locking screw 15 are threadedly connected, thus fixing the upper shell 2 to the lower shell 1. This arrangement ensures the stability of the upper shell 2 and prevents the upper shell 2 from vibrating when the straw is crushed, which would affect the use of the equipment.

[0037] In addition, such as Figure 4As shown, the locking member 14 has a bolt 1401 passing through the through hole 12 and a U-shaped plate 1402 suspended in the slot 13. The U-shaped plate has a through hole 1403 for the bolt 1401 to pass through. It should be noted that the bent part of the U-shaped plate is suspended in the slot 13, which can limit the U-shaped plate and prevent it from sliding after locking. After the bolt 1401 passes through the through hole 1403 and the through hole 12 of the U-shaped plate, the U-shaped plate is fixed to the connecting plate 9 of the lower shell 1 by the set nut.

[0038] As a preferred implementation method, such as Figure 6 As shown, the adjustment mechanism 7 in this embodiment includes a track 702 installed at one end of the lower shell 1, a movable bearing 704 slidably mounted on the track 702, and a lead screw 705 threadedly connected to the bearing. The lead screw 705 is rotatably mounted on the lower shell 1. It should be noted that a mounting plate 701 extends outward from one end of the lower shell 1, the track 702 is fixed on the mounting plate 701, a slider 703 is slidably mounted on the track 702, the movable bearing 704 is fixedly mounted on the slider 703, one of the crushing rollers 3 passes through the movable bearing 704, and the lead screw 705 passes through the slider 703 and is threadedly connected to the slider 703. By rotating the lead screw 705, the slider moves on the track 702, and the slider 703 moves the movable bearing 704, thereby adjusting the size of the gap between the two crushing rollers 3.

[0039] In addition, such as Figure 6 and Figure 7 As shown, a vertical plate 17 is vertically mounted on the mounting plate 701. A lead screw 705 passes through and is rotatably connected to the lead screw 705. A locking screw 18 passes through the side of the lead screw 17. By rotating the locking screw 18, it can abut against the lead screw 705, thereby locking the lead screw 705. Tracks 702 and sliders 703 are respectively provided at both ends of the crushing roller 3 to ensure that the crushing roller 3 can move horizontally. A motor 19 is mounted on the moving bearing 704, and the motor 19 drives the crushing roller 3 to rotate. Another motor 19 is also provided on the other crushing roller 3, and the motor 19 is connected to the crushing roller 3 via a belt and pulley. This arrangement allows for independent control of the rotation of the crushing rollers 3, thereby improving the crushing effect of the structure.

[0040] The adjustable straw crushing equipment in this embodiment uses a fixed bearing 8 to fix one crushing roller 3, and an adjustment mechanism 7 to drive another crushing roller 3 to move precisely relative to it. This achieves linear, continuous, and stable adjustment of the gap between the two crushing rollers 3. The adjustment process is intuitive and highly accurate, and it can keep the axes of the two rollers parallel, ensuring the uniformity of the crushed particle size and the stability of the equipment operation. The groove 10 and the protrusion 11 on the connecting plate 9 provide quick and accurate positioning for the assembly of the equipment, simplifying the installation steps. The locking part 14 and the locking screw 15 fix the upper shell 2 at multiple points, which significantly enhances the overall rigidity and vibration resistance of the equipment and extends its service life. The adjustment mechanism 7, composed of the lead screw 705, the track 702, and the slider 703, converts the rotational motion into high-precision linear displacement. With the support of the upright plate 17 and the locking screw 18, the accuracy, reliability, and anti-loosening effect of the gap adjustment are achieved.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable straw crushing device, characterized in that, include: The lower shell (1), the upper shell (2), two crushing rollers (3) and the adjusting mechanism (7); The bottom of the lower shell (1) is provided with a discharge port (4), and the top of the upper shell (2) is provided with a feed port (5). The two crushing rollers (3) are arranged laterally between the lower shell (1) and the upper shell (2); The adjustment mechanism (7) is mounted on the lower shell (1) and connected to one of the crushing rollers (3) to drive the crushing roller (3) closer to or further away from the other crushing roller (3). The lower shell (1) is equipped with fixed bearings (8) at both ends, and the two ends of the other crushing roller (3) are respectively inserted into the fixed bearings (8).

2. The adjustable straw crushing equipment according to claim 1, characterized in that: The lower shell (1) and the upper shell (2) have connecting plates (9) extending outward from both sides respectively. The top of the connecting plate (9) of the lower shell (1) has a downward-facing groove (10), and the connecting plate (9) of the upper shell (2) has a protrusion (11) that is inserted into the groove (10).

3. The adjustable straw crushing equipment according to claim 2, characterized in that: The lower shell (1) has a through hole (12) on the connecting plate (9) and the upper shell (2) has a slot (13) on the connecting plate (9). A locking element (14) is provided in the through hole (12) and the slot (13). A locking screw (15) is installed on one side of the lower shell (1) and the upper shell (2) relative to the connecting plate (9).

4. The adjustable straw crushing equipment according to claim 3, characterized in that: The locking member (14) includes a bolt (1401) passing through the through hole (12) and a U-shaped plate (1402) suspended in the slot (13). The U-shaped plate (1402) has a through hole (1403) for the bolt (1401) to pass through.

5. The adjustable straw crushing equipment according to claim 3, characterized in that: The upper shell (2) is provided with a U-shaped groove (6), and the top of the locking screw (15) is provided with a wing nut (16). The locking screw (15) passes through the U-shaped groove (6), and the wing nut (16) abuts against the top of the upper shell (2).

6. The adjustable straw crushing equipment according to claim 1, characterized in that: The adjustment mechanism (7) includes a mounting plate (701), a track (702), a slider (703), a movable bearing (704), and a lead screw (705); The mounting plate (701) is disposed at one end of the lower shell (1), the track (702) is fixed on the mounting plate (701), the slider (703) is slidably disposed on the track (702), the movable bearing (704) is fixedly installed on the slider (703), and one of the crushing rollers (3) passes through the movable bearing (704); One end of the lead screw (705) passes through the slider (703) and is threadedly connected to the slider (703), while the other end of the lead screw (705) is rotatably mounted on the mounting plate (701).

7. The adjustable straw crushing equipment according to claim 6, characterized in that: A vertical plate (17) is vertically arranged on the mounting plate (701), and the lead screw (705) passes through the vertical plate (17) and is rotatably connected to the vertical plate (17).

8. The adjustable straw crushing equipment according to claim 7, characterized in that: A locking screw (18) is provided on the side of the upright plate (17), and the end of the locking screw (18) corresponds to the side wall of the lead screw (705).

9. The adjustable straw crushing equipment according to claim 6, characterized in that: A motor (19) is mounted on the movable bearing (704), and the motor (19) is driven to connect with the crushing roller (3) passing through the movable bearing (704).

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