A straw shredding and processing machine
By introducing a cleaning and traction mechanism into the straw shredder, the problem of low cutting efficiency caused by straw entanglement was solved, achieving efficient cleaning and stable equipment operation, and extending the equipment's lifespan.
Patent Information
- Application Number
- CN202522684974.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-18
AI Technical Summary
During the straw shredding process, the straw is easily entangled on the surface of the shredding shaft, which reduces the cutting efficiency of the blades and makes it impossible to achieve the expected size and uniformity requirements.
A straw shredder was designed. By installing shredding blades and staggered baffles on the surface of the rotating shaft, combined with the cooperation of cleaning blocks, gripping blocks, return springs and traction blocks, the shredder can effectively clean up tangled straw, avoid straw residue and improve cleaning effect.
It improves straw shredding efficiency, reduces equipment wear, extends equipment lifespan, and ensures stable operation and efficient work.
Smart Images

Figure CN224936185U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of straw shredding technology, specifically a straw shredding and processing machine. Background Technology
[0002] Driven by both sustainable agricultural development and innovation in green building materials, straw resource utilization technology has achieved breakthrough progress. Straw shredding machines, through biomimetic shearing and intelligent particle control technology, efficiently crush straw into uniform fibrous raw materials. This process retains the flexibility of natural fibers while achieving zero impurity residue through magnetic and air separation systems, providing a pure substrate for subsequent processing. These fibers are deeply fused with environmentally friendly MDI adhesive under high temperature and pressure to form a layered straw-based board with near-zero formaldehyde emissions, superior physical properties compared to traditional boards, and excellent moisture resistance and weather resistance. From straw field recycling and automated crushing to precision board manufacturing, a closed-loop ecological chain is constructed, not only transforming agricultural waste into high-value-added building materials but also achieving zero-emission production through the energy utilization of scrap materials.
[0003] In shredding operations, because the shredding shaft continuously drives the shredding blades to rotate, straw is easily entangled on the surface of the shredding shaft. As a result, in subsequent operations, the cutting efficiency of the blades is reduced, and the straw cannot be fully shredded, so the shredded material does not meet the expected size and uniformity requirements. Therefore, it does not meet the existing needs. To address this, we have proposed a straw shredding machine. Utility Model Content
[0004] This utility model provides a straw shredder, which has the beneficial effects of reducing the possibility of straw entanglement on the surface of the shredding shaft and improving shredding efficiency. It solves the problem mentioned in the background art that in the shredding operation, because the shredding shaft continuously drives the shredding blades to rotate, the straw is very easy to entangle on the surface of the shredding shaft. Therefore, in subsequent work, the cutting efficiency of the blades will be reduced, the straw cannot be fully shredded, and the shredded material will not meet the expected size and uniformity requirements.
[0005] This utility model provides the following technical solution: a straw shredder, comprising a shredder body and a rotating shaft installed inside the shredder body. The shredder body has several partitions installed inside, and the rotating shaft has several shredding blades mounted on its surface. The partitions and shredding blades are alternately fitted inside the shredder body. Each partition has a movable groove inside, and a cutting blade for cutting straw is installed inside the movable groove. A drive motor is installed inside the movable groove to drive the cutting blades to rotate. A cleaning block for cleaning the rotating shaft is also slidably installed inside the movable groove.
[0006] As an optional solution of the straw shredding machine described in this utility model, wherein: electric pulleys are symmetrically installed on the side of the cleaning block, the electric pulleys reciprocate inside the movable groove, the electric pulleys slide in cooperation inside the shredding movable groove, the cleaning block has a movable cavity inside, and a connecting plate is movably installed inside the movable cavity.
[0007] As an optional solution of the straw shredding and processing machine described in this utility model, a grabbing block is installed on the bottom side of the connecting plate, and a plurality of grabbing blocks are arranged in a rectangular array on the bottom side of the connecting plate. The surface of the cleaning block has an movable opening, and the grabbing block moves through the inside of the movable opening.
[0008] As an optional solution of the straw shredding and processing machine described in this utility model, a return spring is installed between the connecting plate and the cleaning block, and a plurality of return springs are provided, which are installed in a linear array between the connecting plate and the cleaning block.
[0009] As an optional solution of the straw shredding and processing machine described in this utility model, the movable groove is provided with a connecting groove, and a connecting rod is installed on the upper side of the connecting plate, and the connecting rod is movably fitted inside the connecting groove.
[0010] As an optional solution of the straw shredding and processing machine described in this utility model, the inner wall of the connecting groove is provided with a traction groove, the traction groove includes a parallel groove and a raised groove, and a traction block is slidably fitted inside the traction groove.
[0011] As an optional solution of the straw shredding and processing machine described in this utility model, the traction block is installed at the end of the connecting rod. When the traction block slides inside the protruding groove, the connecting plate is close to the inner wall of the cleaning block. A material drop groove is provided on the partition plate, and the material drop groove is connected to the movable groove.
[0012] This utility model has the following beneficial effects: 1. In operation, this straw shredder operates with the straw wrapped around the surface of the rotating shaft. The drive motor then moves the cutting blades to cut the straw wrapped around the rotating shaft. Subsequently, a cleaning block slides inside the movable groove with the help of an electric pulley, scraping off the cut straw. Through the cooperation of the connecting plate, gripping block, and return spring inside the cleaning block, the gripping block contacts the surface of the rotating shaft. Therefore, during the rotation of the shaft, the gripping block can enhance the cleaning of the straw, maximize the cleaning effect, minimize the impact of straw residue on the subsequent operation of the equipment, reduce wear and tear on parts caused by straw accumulation, extend the service life of the equipment, and ensure stable and efficient operation of the equipment.
[0013] 2. In operation, this straw shredder uses grippers to grab and remove straw from the shaft surface. Simultaneously, through the cooperation of the traction groove and the traction block, as the traction block slides within the parallel groove, the grippers remove the straw from the shaft surface. When the traction block slides within the raised groove, its upward movement is restricted. At this time, the connecting plate moves upward within the cleaning block through the connecting rod, causing the grippers to retract into the cleaning block. This results in the straw adhering to the gripper surface being squeezed and removed by the cleaning block, thus improving the usability of the grippers and further enhancing the cleaning effect. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 This is a schematic diagram of a half-section of the shredder body of this utility model.
[0016] Figure 3 This is a schematic cross-sectional view of the shredder body of this utility model.
[0017] Figure 4 This is a schematic diagram of a half-section of the partition structure of this utility model.
[0018] Figure 5 This utility model Figure 3 A magnified structural diagram at point A in the diagram.
[0019] In the diagram: 110, shredder body; 111, rotating shaft; 112, shredding blade; 120, partition plate; 121, movable groove; 122, cutting blade; 123, drive motor; 130, cleaning block; 131, electric pulley; 132, movable cavity; 133, movable opening; 140, connecting plate; 141, gripping block; 142, return spring; 150, connecting groove; 151, connecting rod; 152, traction groove; 153, parallel groove; 154, raised groove; 160, traction block; 170, material discharge chute. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example 1: This example aims to address the problem in shredding operations where, due to the continuous rotation of the shredding shaft and shredding blades, straw easily becomes entangled on the shaft surface. This leads to reduced blade cutting efficiency and insufficient shredding of the straw, resulting in shredded material that does not meet the expected size and uniformity requirements. Please refer to [link to example]. Figures 1-5 A straw shredding and processing machine includes a shredder body 110 and a rotating shaft 111 installed inside the shredder body 110. Several partitions 120 are installed inside the shredder body 110. Several shredding blades 112 are installed on the surface of the rotating shaft 111. The partitions 120 and the shredding blades 112 are staggered inside the shredder body 110. The partitions 120 have movable grooves 121 inside. Cutting blades 122 for cutting straw are installed inside the movable grooves 121. A drive motor 123 is installed inside the movable grooves 121 to drive the cutting blades 122 to rotate. A cleaning block 130 for cleaning the rotating shaft 111 is also slidably installed inside the movable grooves 121.
[0022] Electric pulleys 131 are symmetrically installed on the side of the cleaning block 130. The electric pulleys 131 slide back and forth inside the movable groove 121. The electric pulleys 131 are a common device and will not be described in detail here. The electric pulleys 131 slide and cooperate inside the shredding movable groove 121. The cleaning block 130 has a movable cavity 132 inside, and a connecting plate 140 is movably installed inside the movable cavity 132.
[0023] A gripper block 141 is installed on the bottom side of the connecting plate 140. Several gripper blocks 141 are arranged in a rectangular array on the bottom side of the connecting plate 140. The surface of the cleaning block 130 has an active opening 133, and the gripper block 141 moves through the active opening 133.
[0024] A reset spring 142 is installed between the connecting plate 140 and the cleaning block. Several reset springs 142 are arranged in a linear array between the connecting plate 140 and the cleaning block 130.
[0025] In this embodiment: During use, with the straw wrapped around the surface of the rotating shaft 111, the drive motor 123 runs and drives the cutting blade 122 to cut the straw wrapped around the surface of the rotating shaft 111. Subsequently, the cleaning block 130 slides inside the movable groove 121 with the help of the electric pulley 131 to scrape off the cut straw. Through the cooperation of the connecting plate 140, the gripping block 141 and the return spring 142 inside the cleaning block 130, the gripping block 141 contacts the surface of the rotating shaft 111. Therefore, during the rotation of the rotating shaft 111, the gripping block 141 can strengthen the cleaning of the straw, maximize the cleaning effect of the straw, and at the same time minimize the impact of straw residue on the subsequent operation of the equipment. It can also reduce the wear of parts caused by the accumulation of straw, extend the service life of the equipment, and ensure the stable and efficient operation of the equipment.
[0026] Example 2 aims to address the problem that, during use, the gripper can remove straw from the rotating shaft surface, but straw residue remains between the gripper and the rotating shaft, causing straw accumulation on the gripper surface and affecting the cleaning effect. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figures 1-5 The movable groove 121 has a connecting groove 150 inside, and a connecting rod 151 is installed on the upper side of the connecting plate 140. The connecting rod 151 is movably fitted inside the connecting groove 150.
[0027] The inner wall of the connecting groove 150 is provided with a traction groove 152, which includes a parallel groove 153 and a raised groove 154. A traction block 160 is slidably fitted inside the traction groove 152. The traction block 160 is installed at the end of the connecting rod 151. When the traction block 160 slides inside the raised groove 154, the connecting plate 140 is close to the inner wall of the cleaning block 130. A material discharge groove 170 is provided on the partition plate 120, which is connected to the movable groove 121.
[0028] In this embodiment: During use, the grabbing block 141 grabs and removes the straw from the surface of the rotating shaft 111. Simultaneously, through the cooperation of the traction groove 152 and the traction block 160, when the traction block 160 slides inside the parallel groove 153, the grabbing block 121 grabs and removes the straw from the surface of the rotating shaft 111. When the traction block 160 slides inside the protruding groove 154, the traction block 160 is restricted from rising. At this time, the connecting plate 140 moves upward inside the cleaning block 130 through the cooperation of the connecting rod 151. Therefore, the grabbing block 141 retracts into the cleaning block 130, so that the straw attached to the surface of the grabbing block 141 is squeezed off by the cleaning block 130. Thus, the usability of the grabbing block 141 is improved, and the cleaning effect is further improved.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A straw material shredding machine, comprising a shredder body (110) and a rotating shaft (111) installed inside the shredder body (110), characterized in that: The shredder body (110) is equipped with several partitions (120), and several shredding blades (112) are installed on the surface of the rotating shaft (111). The partitions (120) and the shredding blades (112) are interleaved inside the shredder body (110). The partitions (120) have movable grooves (121) inside, and cutting blades (122) for cutting straw are installed inside the movable grooves (121). A drive motor (123) is installed inside the movable grooves (121) and is used to drive the cutting blades (122) to rotate. A cleaning block (130) for cleaning the rotating shaft (111) is also slidably installed inside the movable grooves (121).
2. The machine according to claim 1, characterized in that: The cleaning block (130) is symmetrically equipped with electric pulleys (131) on its side. The electric pulleys (131) slide back and forth inside the movable groove (121). The electric pulleys (131) are slidably engaged inside the tearing movable groove (121). The cleaning block (130) has a movable cavity (132) inside. A connecting plate (140) is movably installed inside the movable cavity (132).
3. A machine for shredding straw material according to claim 2, characterised in that: A gripper (141) is installed on the bottom side of the connecting plate (140). Several grippers (141) are arranged in a rectangular array on the bottom side of the connecting plate (140). The surface of the cleaning block (130) has an opening (133) for movement. The gripper (141) moves through the opening (133).
4. The machine according to claim 2, characterized in that: A reset spring (142) is installed between the connecting plate (140) and the cleaning block (130). A plurality of reset springs (142) are provided, and the plurality of reset springs (142) are installed in a linear array between the connecting plate (140) and the cleaning block (130).
5. The machine according to claim 2, characterized in that: The movable groove (121) has a connecting groove (150) inside, and a connecting rod (151) is installed on the upper side of the connecting plate (140). The connecting rod (151) is movably fitted inside the connecting groove (150).
6. A machine for shredding straw material according to claim 5, characterised in that: The inner wall of the connecting groove (150) is provided with a traction groove (152), the traction groove (152) includes a parallel groove (153) and a raised groove (154), and a traction block (160) is slidably fitted inside the traction groove (152).
7. A machine for shredding straw material according to claim 6, characterised in that: The traction block (160) is installed at the end of the connecting rod (151). When the traction block (160) slides inside the protrusion groove (154), the connecting plate (140) is close to the inner wall of the cleaning block (130). The partition plate (120) is provided with a material drop groove (170), which is connected to the movable groove (121).
