Multistage straw pulverizer

Abstract

The utility model discloses a multistage straw pulverizer, including the machine cylinder of inclination, main drive shaft, four slave drive shafts and a plurality of layers of smashing cutter wheels. The classification of the multistage straw pulverizer is carried out to the straw in the machine cylinder from top to bottom by the smashing cutter wheel of multilayer and gradually decreasing interval, guarantees the full pulverization to the straw, the first baffle of the even dense discharge hole is arranged in the machine cylinder of inclination, guarantees that the straw particle of reaching the granularity requirement can only pass the discharge hole, and then from the discharge port enters the collection box and is collected. The application solves the problem that the straw needs to be pulverized twice or multiple times when the straw is not pulverized or not completely pulverized, realizes the multistage classification of the straw and improves the pulverization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically a multi-stage straw crusher. Background Technology

[0002] Straw crushers are machines used to crush combustible agricultural waste such as corn stalks, straw, peanut shells, bean stalks, and firewood. This prevents these crop straws from burning in vain, protects the environment, and effectively develops renewable energy.

[0003] For example, Chinese patent CN222340077U, published on January 14, 2025, discloses a crop straw crusher, including a housing. A feed hopper for introducing straw is fixedly connected to the top of the housing. A crushing mechanism for crushing straw is installed at the top of the inner side of the housing. An inclined filter plate is fixedly connected to the middle of the inner side of the housing. A discharge hopper for discharging incompletely crushed straw is installed at the bottom of the filter plate. A cutting mechanism, driven by the crushing mechanism, cuts straw stuck in the filter holes of the filter plate on the top surface of the filter plate. This invention can promptly process incompletely crushed straw, reducing subsequent screening work and lowering the cost of straw crushing.

[0004] As can be seen from the above patents, the straw crusher uses staggered cutter wheels on two rotating shafts to cut and crush the straw. This results in a problem where straw entering from the feed inlet is not completely crushed before being discharged from the discharge hopper, requiring secondary or multiple crushing processes, leading to low crushing efficiency. Therefore, this utility model provides a multi-stage straw crusher to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-stage straw crusher.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A multi-stage straw crusher includes an inclined barrel. A main drive shaft, which is used to drive rotation, extends from the top of the barrel to the bottom of the barrel and is rotatably connected to the axis at the bottom of the barrel; Four drive shafts are used to drive rotation. The drive shafts are evenly distributed around the main drive shaft at equal intervals of 90°. The drive shafts extend from the top of the barrel to the bottom of the barrel and are rotatably connected to the bottom of the barrel. Several layers of crushing blades are provided, which are used to cut and crush straw. The crushing blades are fixedly installed on the main drive shaft and the driven shaft respectively. The crushing blades include several uniformly distributed crushing blades at equal angles. Each layer of the crushing blades includes crushing blades on the main drive shaft and four crushing blades on the slave drive shafts, which are staggered with each other. The crushing blades of the four crushing blades on the slave drive shafts are in contact with the inner wall of the barrel. From top to bottom, the spacing between the crushing blades on the main drive shaft and the four crushing blades on the slave drive shafts in each layer is equal and decreases sequentially.

[0007] Preferably, the spacing between each layer of the crushing blades is 10 mm, 8 mm, 6 mm and 4 mm respectively.

[0008] Preferably, a first partition is fixedly installed at the bottom of the barrel, the edge of the first partition is attached to the inside of the barrel, and a plurality of discharge holes are evenly distributed on the first partition.

[0009] Preferably, a drive system is provided at the bottom of the barrel. The drive system includes a drive motor, a main pulley, a driven pulley, and a belt pulley. The drive motor is fixedly installed at the bottom of the barrel, and the output end of the drive motor is coaxially connected to the main drive shaft. The main drive shaft and the driven drive shaft are respectively fixedly connected to the main pulley and the driven pulley. The main pulley is connected to the driven pulley via a belt. The four driven drive shafts are respectively fixedly installed with belts, and the four belt pulleys are synchronously connected into a whole via belts.

[0010] Preferably, the angle between the axis of the barrel and the horizontal line is 30~60º, a second partition is fixedly installed inside the barrel between the first partition and the pulley, a discharge port is provided on the side wall of the barrel above the second partition, and a receiving box is provided directly below the discharge port.

[0011] Preferably, a support platform and a support frame are respectively provided at the bottom and one side of the barrel, the barrel is fixed on the support platform, and a ring is fixedly provided on the upper outer wall of the barrel and the ring is fixedly connected to the top of the support frame.

[0012] Preferably, a fixing ring and a fixing rod are respectively provided on the top of the barrel. The fixing ring surrounds the outer wall of the four driven shafts through four fixing holes. The fixing ring is fixedly connected to the barrel by symmetrically distributed fixing rods. The main drive shaft is fixedly connected to the fixing ring through fixing holes and symmetrically distributed fixing rods. The main drive shaft and the driven shaft are rotatably connected in the fixing holes.

[0013] Preferably, the distance between the bottommost crushing blade and the first partition is 1-2 mm smaller than the diameter of the discharge hole.

[0014] The beneficial effects of this utility model are: 1. Multiple layers of crushing blades with decreasing spacing are arranged from top to bottom inside the machine barrel to crush the straw in multiple rounds and grade it from large to small particle size, ensuring that the straw is fully crushed; 2. A first baffle with evenly distributed discharge holes is installed inside the inclined barrel to ensure that only straw particles that meet the particle size requirements can pass through the discharge holes and then enter the collection box from the discharge outlet for collection.

[0015] This application solves the problem of straw that is not yet crushed or not completely crushed and needs to be crushed a second or multiple times, realizing multi-round graded crushing of straw and improving crushing efficiency. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a top view of the barrel structure of this utility model; Figure 3 This is a top view of the first partition of this utility model. Figure 4 This is a schematic diagram of the drive system of this utility model; As shown in the figure: 1. Barrel; 2. Main drive shaft; 3. Driven drive shaft; 4. Crushing blade; 5. First partition; 6. Discharge hole; 7. Drive system; 71. Drive motor; 72. Main pulley; 73. Driven pulley; 74. Pulley; 8. Second partition; 9. Discharge port; 10. Receiving box; 11. Support platform; 12. Support frame; 13. Fixing ring; 14. Fixing rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0022] It should be noted that similar labels and letters are likely to represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 based on the specific circumstances.

[0025] Reference Figure 1-4This utility model discloses a multi-stage straw crusher, comprising an inclined barrel 1, a main drive shaft 2, four driven shafts 3, and several layers of crushing blades 4. The inclined barrel 1 facilitates the feeding of straw and the discharge of crushed straw particles. The main drive shaft 2, used to drive the crushing blades 4, extends from the top of the barrel 1 to the bottom and is rotatably connected to the axis at the bottom of the barrel 1. The four driven shafts 3, used to drive the crushing blades 4, are evenly distributed around the main drive shaft 2 at equal angles of 90° and at equal intervals. The driven shafts 3 extend from the top of the barrel 1 to the bottom and are rotatably connected inside the bottom of the barrel 1. Several layers of crushing blades 4, used for cutting and crushing the straw, are respectively fixedly installed on the main drive shaft 2 and the driven shafts 3. The blade wheel 4 includes several uniformly distributed crushing blades at equal angles, which can crush straw. Each layer of crushing blade wheel 4 includes crushing blades 4 on the main drive shaft 2 and four crushing blades 4 on the driven drive shaft 3, which are staggered with each other. The crushing blades of the crushing blades 4 on the four driven drive shaft 3 are in contact with the inner wall of the barrel 1. From top to bottom, the spacing between the crushing blades 4 on the main drive shaft 2 and the crushing blades 4 on the four driven drive shaft 3 in each layer is equal and decreases sequentially. Several layers of crushing blade wheels 4 with decreasing spacing can crush straw in multiple rounds and grade it from large to small particle size, ensuring that the straw is fully crushed.

[0026] In an optional embodiment, the spacing between each layer of crushing blades 4 is 10 mm, 8 mm, 6 mm and 4 mm respectively; thus, the straw can be crushed into straw particles within the corresponding particle size range in sequence.

[0027] In an optional embodiment, a first partition 5 for isolation is fixedly installed at the bottom of the barrel 1. The first partition 5, which is attached to the inside of the barrel 1, is evenly distributed with a plurality of discharge holes 6 for screening straw particles. Only straw particles with a particle size smaller than the diameter of the discharge hole 6 can pass through the discharge hole 6.

[0028] In an optional embodiment, a drive system 7 for driving the main drive shaft 2 and the driven drive shaft 3 to rotate is provided at the bottom of the barrel 1. The drive system 7 includes a drive motor 71, a main pulley 72, a driven pulley 73, and pulleys 74. The drive motor 71 is fixedly installed at the bottom of the barrel 1, and the output end of the drive motor 71 is coaxially connected to the main drive shaft 2, so that the output end of the drive motor 71 drives the main drive shaft 2 to rotate. The main pulley 72 and the driven pulley 73 are respectively fixedly connected to the main drive shaft 2 and the driven drive shaft 3. The main pulley 72 is connected to the driven pulley 73 through a belt. The rotating main drive shaft 2 drives the main pulley 72 to rotate, which in turn drives the driven pulley 73 to rotate through the belt, which in turn drives the driven drive shaft 3 to rotate. The four driven drive shafts 3 are respectively fixedly installed with pulleys 74. The four pulleys 74 are synchronously connected into a whole through the belt, so that the four driven drive shafts 3 can rotate synchronously through the belt and the four pulleys 74.

[0029] In an optional embodiment, the angle between the axis of the barrel 1 and the horizontal line is 30~60º. A second partition 8 is fixedly installed inside the barrel 1 between the first partition 5 and the pulley 74. A discharge bin is formed between the first partition 5 and the second partition 8, which respectively limit the main drive shaft 2 and the driven shaft 3. Straw particles with a particle size smaller than the diameter of the discharge hole 6 enter the discharge bin through the discharge hole 6. A discharge port 9 for discharging straw particles is provided on the side wall of the barrel 1 above the second partition 8. A collection box 10 for collecting straw particles is provided directly below the discharge port 9.

[0030] In an optional embodiment, a support platform 11 and a support frame 12 for supporting the inclined barrel 1 are respectively provided at the bottom and one side of the barrel 1. A ring is fixedly provided on the upper outer wall of the barrel 1, which is fixed on the support platform 11 and is fixedly connected to the top of the support frame 12. The support platform 11 and the support frame 12 support the bottom and the upper part of the barrel 1 respectively.

[0031] In an optional embodiment, a fixing ring 13 and a fixing rod 14 are respectively provided on the top of the barrel 1 to fix and limit the main drive shaft 2 and the driven drive shaft 3. The fixing ring 13 surrounds the outer wall of the four driven drive shafts 3 through four fixing holes and fixes and limits the driven drive shafts 3. The fixing ring 13 is fixedly connected to the barrel 1 by symmetrically distributed fixing rods 14 and the fixing ring 14 is fixedly connected to the main drive shaft 2 through the fixing holes and symmetrically distributed fixing rods 14 and the fixing ring 13 is fixed and limits the main drive shaft 2. The main drive shaft 2 and the driven drive shaft 3 are rotatably connected in the fixing holes.

[0032] In an optional embodiment, the distance between the bottommost crushing blade 4 and the first partition 5 is 1-2 mm smaller than the diameter of the discharge hole 6, so as to continue to cut and crush straw particles with a particle size larger than the diameter of the discharge hole 6.

[0033] The working principle and usage process of this utility model are as follows: The drive motor 71 of the drive system 7 sequentially drives the main drive shaft 2, main pulley 72, driven pulley 73, four pulleys 74 and four driven drive shafts 3 to rotate at high speed. This, in turn, drives the multiple layers of crushing blades 4 on the main drive shaft 2 and the four driven drive shafts 3 to rotate at high speed. This process involves multiple rounds of graded crushing of the straw fed from the top of the barrel 1, with the particle size decreasing from large to small. The high-speed rotating multiple layers of crushing blades 4 generate vortices, which facilitate the dispersion, cutting and crushing of the straw in the barrel 1. Straw particles with a particle size larger than the diameter of the discharge hole 6 continue to be fully crushed by the crushing blades 4 in the barrel 1 until the particle size is smaller than the diameter of the discharge hole 6. Straw particles with a particle size smaller than the diameter of the discharge hole 6 pass through the multiple discharge holes 6 on the first partition plate 5 and enter the collection box 10 through the discharge port 9 for collection.

[0034] Of course, the embodiments described in this specific implementation are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A multi-stage straw crusher, comprising an inclined barrel (1), Main drive shaft (2), the main drive shaft (2) is used to drive rotation, the main drive shaft (2) extends from the top of the barrel (1) to the bottom of the barrel (1) and is rotatably connected to the axis at the bottom of the barrel (1); Four drive shafts (3) are used to drive rotation. The drive shafts (3) are evenly distributed around the main drive shaft (2) at equal intervals of 90°. The drive shafts (3) extend from the top of the barrel (1) to the bottom of the barrel (1) and are rotatably connected to the bottom of the barrel (1). Its features are: Several layers of crushing blades (4) are used to cut and crush straw. The crushing blades (4) are fixedly installed on the main drive shaft (2) and the driven shaft (3) respectively. The crushing blade (4) includes several uniformly distributed crushing blades at equal angles. Each layer of the crushing blade (4) includes crushing blades (4) on the main drive shaft (2) and four crushing blades (4) on the secondary drive shaft (3) that are staggered with each other. The crushing blades of the four crushing blades (4) on the secondary drive shaft (3) are attached to the inner wall of the barrel (1). The spacing between the crushing blades (4) on the main drive shaft (2) and the four crushing blades (4) on the secondary drive shaft (3) in each layer from top to bottom is equal and decreases sequentially.

2. A multi-stage straw crusher according to claim 1, characterized in that: The spacing between the crushing blades (4) in each layer is 10 mm, 8 mm, 6 mm and 4 mm respectively.

3. The multi-stage straw crusher according to claim 1, characterized in that: A first partition plate (5) is fixedly installed at the bottom of the barrel (1). The edge of the first partition plate (5) fits into the interior of the barrel (1). A plurality of discharge holes (6) are evenly distributed on the first partition plate (5).

4. A multi-stage straw crusher according to claim 3, characterized in that: A drive system (7) is provided at the bottom of the barrel (1). The drive system (7) includes a drive motor (71), a main pulley (72), a driven pulley (73), and a pulley (74). The drive motor (71) is fixedly installed at the bottom of the barrel (1), and the output end of the drive motor (71) is coaxially connected to the main drive shaft (2). The main drive shaft (2) and the driven drive shaft (3) are respectively fixedly connected to the main pulley (72) and the driven pulley (73). The main pulley (72) is connected to the driven pulley (73) through a belt. The four driven drive shafts (3) are respectively fixedly installed with the pulley (74). The four pulleys (74) are synchronously connected into a whole through a belt.

5. A multi-stage straw crusher according to claim 4, characterized in that: The angle between the axis of the barrel (1) and the horizontal line is 30~60º. A second partition (8) is fixedly installed inside the barrel (1) between the first partition (5) and the pulley (74). A discharge port (9) is provided on the side wall of the barrel (1) above the second partition (8). A receiving box (10) is provided directly below the discharge port (9).

6. A multi-stage straw crusher according to claim 1, characterized in that: The bottom and one side of the barrel (1) are respectively provided with a support platform (11) and a support frame (12). The barrel (1) is fixed on the support platform (11). A ring is fixedly provided on the upper outer wall of the barrel (1) and the ring is fixedly connected to the top of the support frame (12).

7. A multi-stage straw crusher according to claim 1, characterized in that: The top of the barrel (1) is provided with a fixing ring (13) and a fixing rod (14). The fixing ring (13) surrounds the outer wall of the four driven shafts (3) through four fixing holes. The fixing ring (13) is fixedly connected to the barrel (1) by symmetrically distributed fixing rods (14). The main drive shaft (2) is fixedly connected to the fixing ring (13) through fixing holes and symmetrically distributed fixing rods (14). The main drive shaft (2) and the driven shaft (3) are rotatably connected in the fixing holes.

8. A multi-stage straw crusher according to claim 3, characterized in that: The distance between the bottommost crushing blade (4) and the first partition (5) is 1-2 mm smaller than the diameter of the discharge hole (6).

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