A straw crushing and processing equipment
By using a motor-driven crushing and reflux device, straw is crushed multiple times, solving the problem of incomplete straw crushing in existing technologies and improving the fineness and efficiency of straw crushing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGHUI BIOTECHNOLOGY (HENGSHUI) CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-30
AI Technical Summary
Existing straw crushing devices only perform single-pass crushing, resulting in some materials not being finely crushed, thus reducing the fineness of straw crushing.
The device employs a motor-driven crushing and reflux device. The reflux device guides the crushed material back into the crushing chamber for secondary crushing, and the combination of spiral blades and crushing cutters enables multiple crushing operations.
It improves the fineness of straw crushing, increases crushing efficiency, and ensures that the material is fully crushed.
Smart Images

Figure CN224419442U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of straw crushing technology, specifically a straw crushing and processing equipment. Background Technology
[0002] Straw is a general term for the stems and leaves (ears) of mature crops. Burning it is a convenient and efficient way to dispose of it, saving effort and improving soil fertility. Straw typically refers to the residue left after harvesting wheat, rice, corn, potatoes, rapeseed, cotton, sugarcane, and other crops (usually coarse grains). More than half of the products of crop photosynthesis are found in straw. Straw is rich in nitrogen, phosphorus, potassium, calcium, magnesium, and organic matter, making it a versatile and renewable biological resource. Straw is also a type of roughage, characterized by its high crude fiber content (30%-40%) and the presence of lignin.
[0003] Whether processed as feed or other products, existing straw needs to be crushed. This necessitates crushing equipment. For example, a utility model patent, CN222869469U, entitled "A Rapid Straw Crushing Device for Agricultural Use," describes a device including a crushing box. Two bearings are embedded on one side of the crushing box, with rotating shafts rotatably connected within the bearings. One end of each shaft is connected to a driven wheel, which meshes with each other. The other end of each shaft is connected to a crushing wheel, which is rotatably connected to the inner wall of the crushing box. A mounting plate is attached to one side of the crushing box, and a first motor is fixedly mounted on the top of the mounting plate. The output shaft of the first motor is connected to a driving wheel. In this utility model, an anti-winding device is incorporated. As the crushing wheel rotates, the straw wrapped around it contacts a cutting block, causing the cutting block to cut the straw, thus breaking it off and preventing it from tangling around the crushing wheel, which would otherwise result in incomplete crushing and ensure the device's crushing effect.
[0004] However, existing crushing devices only crush materials once, and some straw cannot be finely crushed during the crushing process, resulting in incomplete crushing of straw and reducing the fineness of straw crushing. Utility Model Content
[0005] In view of the shortcomings of the existing technology, this utility model provides a straw crushing and processing equipment, which solves the technical problem that the existing crushing device only crushes the material once, and some of the straw cannot be finely crushed during the crushing process, resulting in incomplete straw crushing and reduced straw crushing fineness.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a straw crushing and processing equipment, comprising a crushing box, a feeding hopper fixedly installed on the upper wall of the crushing box, a funnel-shaped structure on the lower wall of the crushing box, a three-way discharge pipe fixedly installed on the lower wall of the crushing box, a first valve and a second valve fixedly installed at the lower end of the three-way discharge pipe, a crushing device provided inside the crushing box, a reflux device provided on the side wall of the crushing box, the reflux device being connected to the three-way discharge pipe, and a motor being provided between the reflux device and the crushing device.
[0007] Preferably, the crushing device includes a housing, which is fixedly installed on the lower wall of the three-way discharge pipe. A pair of rotating rods are rotatably installed on the lower wall of the housing. The upper ends of the rotating rods pass through the housing and the three-way discharge pipe and are located inside the crushing chamber. A plurality of crushing blades are fixedly installed on the rotating rods, which are located inside the crushing chamber. Gears are fixedly installed on the rotating rods, which are located inside the housing and mesh with each other. The lower end of one of the pair of rotating rods passes through the housing and is fixedly installed with a first pulley.
[0008] Preferably, the crushing blades on the pair of rotating rods are staggered.
[0009] Preferably, the reflux device includes a reflux box, which is fixedly installed on the outer wall of the crushing box. The three-way discharge pipe is connected to the reflux box. A rotating shaft is rotatably installed between the upper and lower walls of the reflux box. A spiral blade is fixedly installed on the rotating shaft. The lower end of the rotating shaft passes through the lower wall of the reflux box and is fixedly installed with a second pulley. A protective box is fixedly installed on the lower outer wall of the reflux box. The motor is fixedly installed on the lower inner wall of the protective box. The drive end of the motor is fixedly connected to the lower end of the rotating shaft. An opening is provided on the side wall of the protective box. A transmission belt is connected between the first pulley and the second pulley and passes through the opening. A guide tube is fixedly installed between the reflux box and the upper wall of the crushing box.
[0010] Preferably, a connecting plate is fixedly installed between the recovery box and the crushing box.
[0011] Preferably, support legs are fixedly installed at the four corners of the lower wall of the crushing box.
[0012] Beneficial effects
[0013] This invention provides a straw crushing and processing equipment, solving the technical problem that existing crushing devices only crush materials once, resulting in some straw not being finely crushed during the crushing process, thus causing incomplete straw crushing and reducing the fineness of straw crushing. This invention uses a motor-driven crushing device and a return device, enabling the crushing device to crush the straw, and the return device to return the crushed material to the crushing box for further crushing, so that the material is repeatedly crushed, thereby improving the fineness of straw crushing and increasing the working efficiency of straw crushing. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the straw crushing and processing equipment described in this utility model.
[0015] In the diagram: 1. Crushing box; 2. Feed hopper; 3. Three-way discharge pipe; 4. First valve; 5. Second valve; 6. Motor; 7. Box body; 8. Rotating rod; 9. Crushing blade; 10. Gear; 11. First pulley; 12. Rebound box; 13. Rotating shaft; 14. Spiral blade; 15. Second pulley; 16. Protective box; 17. Opening; 18. Transmission belt; 19. Conduit; 20. Connecting plate; 21. Support leg. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1 This utility model provides a technical solution: a straw crushing and processing equipment, including a crushing box 1, a feeding hopper 2 fixedly installed on the upper wall of the crushing box 1, a funnel-shaped structure on the lower wall of the crushing box 1, a three-way discharge pipe 3 fixedly installed on the lower wall of the crushing box 1, a first valve 4 and a second valve 5 respectively fixedly installed at the lower end of the three-way discharge pipe 3, a crushing device is provided inside the crushing box 1, a reflux device is provided on the side wall of the crushing box 1, the reflux device is connected to the three-way discharge pipe 3, and a motor 6 is provided between the reflux device and the crushing device.
[0018] In this embodiment, the crushing device includes a housing 7, which is fixedly installed on the lower wall of the three-way discharge pipe 3. A pair of rotating rods 8 are rotatably installed on the lower wall of the housing 7. The upper ends of the rotating rods 8 pass through the housing 7 and the three-way discharge pipe 3 and are located inside the crushing box 1. A plurality of crushing blades 9 are fixedly installed on the rotating rods 8 and are located inside the crushing box 1. A gear 10 is fixedly installed on the rotating rods 8 and is located inside the housing 7 and meshed with each other. The lower end of one of the pair of rotating rods 8 passes through the housing 7 and is fixedly installed with a first pulley 11.
[0019] In this embodiment, the crushing blades 9 on the pair of rotating rods 8 are staggered.
[0020] In this embodiment, the reflux device includes a reflux box 12, which is fixedly installed on the outer wall of the crushing box 1. The three-way discharge pipe 3 is connected to the reflux box 12. A rotating shaft 13 is rotatably installed between the upper and lower walls of the reflux box 12. A spiral blade 14 is fixedly installed on the rotating shaft 13. The lower end of the rotating shaft 13 passes through the lower wall of the reflux box 12 and is fixedly installed with a second pulley 15. A protective box 16 is fixedly installed on the lower outer wall of the reflux box 12. A motor 6 is fixedly installed on the lower inner wall of the protective box 16. The drive end of the motor 6 is fixedly connected to the lower end of the rotating shaft 13. An opening 17 is provided on the side wall of the protective box 16. A transmission belt 18 is connected between the first pulley 11 and the second pulley 15. The transmission belt 18 passes through the opening 17. A guide tube 19 is fixedly installed between the reflux box 12 and the upper wall of the crushing box 1.
[0021] In this embodiment, a connecting plate 20 is fixedly installed between the recovery box 12 and the crushing box 1.
[0022] In this embodiment, support legs 21 are fixedly installed at the four corners of the lower wall of the crushing box 1.
[0023] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.
[0024] Example: As shown in the accompanying drawings, during use, the motor 6 is started, which drives the rotating shaft 13 to rotate, thereby causing the spiral blade 14 and the second pulley 15 to rotate. Since the first pulley 11 and the second pulley 15 are connected by a transmission belt 18, the first pulley 11 drives one of the rotating rods 8 to rotate. Since the rotating rods 8 are connected by a gear 10, the rotating rods 8 rotate simultaneously. The rotating rods 8 drive the crushing blade 9 to rotate. At this time, the straw is fed into the crushing box 1 through the feed hopper 2. The second valve 5 is then closed, and the straw is crushed by the crushing blade 9. The crushed material is fed into the return box 12 through the three-way discharge pipe 3, and rises along the path of the spiral blade 14 and is fed back into the crushing box 1 through the guide tube 19, so that the material is repeatedly crushed, making the straw more finely crushed. After crushing, the first valve 4 is closed and the second valve 5 is opened, so that the material is discharged through the other end of the three-way discharge pipe 3.
[0025] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
Claims
1. A straw crushing processing equipment, comprising a crushing box (1), a feeding hopper (2) is fixedly installed on the upper wall surface of the crushing box (1), characterized in that, The lower wall of the crushing box (1) has a funnel-shaped structure. A three-way discharge pipe (3) is fixedly installed on the lower wall of the crushing box (1). A first valve (4) and a second valve (5) are fixedly installed at the two lower ends of the three-way discharge pipe (3). A crushing device is provided inside the crushing box (1). A reflux device is provided on the side wall of the crushing box (1). The reflux device is connected to the three-way discharge pipe (3). A motor (6) is provided between the reflux device and the crushing device.
2. The straw pulverizing processing equipment according to claim 1, characterized in that The crushing device includes a housing (7), which is fixedly installed on the lower wall of the three-way discharge pipe (3). A pair of rotating rods (8) are rotatably installed on the lower wall of the housing (7). The upper end of the rotating rod (8) passes through the housing (7) and the three-way discharge pipe (3) and is located inside the crushing box (1). Several crushing blades (9) are fixedly installed on the rotating rods (8) respectively. The crushing blades (9) are located inside the crushing box (1). Gears (10) are fixedly installed on the rotating rods (8). The gears (10) are located inside the housing (7) and are meshed with each other. The lower end of one of the pair of rotating rods (8) passes through the housing (7) and is fixedly installed with a first pulley (11).
3. The straw pulverizing processing equipment according to claim 2, characterized in that The crushing blades (9) on the pair of rotating rods (8) are interlaced.
4. The straw pulverizing processing equipment according to claim 2, characterized in that The reflux device includes a reflux box (12), which is fixedly installed on the outer wall of the crushing box (1). The three-way discharge pipe (3) is connected to the reflux box (12). A rotating shaft (13) is rotatably installed between the upper and lower walls of the reflux box (12). A spiral blade (14) is fixedly installed on the rotating shaft (13). The lower end of the rotating shaft (13) passes through the lower wall of the reflux box (12) and is fixedly installed with a second pulley (15). The lower outer wall of the reflux box (12) is fixed. A protective box (16) is installed, and the motor (6) is fixedly installed on the lower inner wall of the protective box (16). The driving end of the motor (6) is fixedly connected to the lower end of the rotating shaft (13). An opening (17) is opened on the side wall of the protective box (16). A transmission belt (18) is connected between the first pulley (11) and the second pulley (15). The transmission belt (18) passes through the opening (17). A guide tube (19) is fixedly installed between the recovery box (12) and the upper wall of the crushing box (1).
5. The straw pulverizing processing apparatus according to claim 4, characterized in that A connecting plate (20) is fixedly installed between the recovery box (12) and the crushing box (1).
6. The straw pulverizing processing apparatus according to claim 1, characterized in that Support legs (21) are fixedly installed at the four corners of the lower wall of the crushing box (1).