A shredder
By using a servo motor to drive the crushing shaft and fan blades to blow air, and combining this with a guide vane to redirect the airflow, the problems of material adhesion and clogging in the discharge channel of the straw crusher are solved, achieving efficient crushing and discharge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JINGYAN COUNTY FEIYA MASCH MFG CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
AI Technical Summary
When existing small-scale crushers crush straw, the straw tends to stick to the crushing blades, affecting the crushing effect. Furthermore, the material tends to accumulate in the discharge channel, making it difficult to effectively blow it away.
A servo motor drives the crushing shaft and fan blades to rotate, using wind power to blow away the material on the crushing blades, and the wind force is repeatedly redirected by the air guide plate to assist in blowing the material in the discharge channel.
It effectively reduces material adhesion, improves crushing effect and output efficiency, avoids clogging of crushing blades, and improves overall crushing efficiency.
Smart Images

Figure CN224402282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulverizer technology, specifically to a pulverizer. Background Technology
[0002] Straw crushing refers to the process of breaking the remaining stalks of crops after harvest into smaller particles or powder through mechanical or manual means. It is an important link in the resource utilization of agricultural waste.
[0003] Existing methods for utilizing straw often involve shredding it to produce feed for livestock. Farmers typically use small shredders for this purpose. While these shredders use a motor to drive a blade assembly, straw tends to stick to the blades, affecting the shredding efficiency. Furthermore, the shredded material often accumulates in the discharge channel, making it difficult to use airflow to clear material from the blade surface and the material channel. Therefore, we propose a new type of shredder. Utility Model Content
[0004] The purpose of this invention is to provide a pulverizer that solves the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a crusher, comprising a housing, wherein a discharge shell is fixedly connected to the bottom of the housing;
[0006] A first servo motor is fixedly installed on one side wall of the housing. The drive shaft of the first servo motor movably passes through the housing and is fixedly connected to a crushing shaft. Multiple evenly distributed crushing blades are fixedly connected to the outer wall of the crushing shaft. The crushing shaft movably passes through the housing and is fixedly connected to a rotating shaft. The outer end of the rotating shaft is inserted into the inner cavity of the fixed shell. Fan blades are fixedly fitted onto the outer wall of the rotating shaft. The top of the housing is fixedly connected to a shell. An air distribution pipe is fixedly installed on the upper side of the inner cavity of the shell. Multiple evenly distributed air distribution holes are opened at the bottom of the air distribution pipe. The output end of the fixed shell is fixedly connected to a guide pipe. The outer end of the guide pipe movably passes through the shell and is connected to the air distribution pipe.
[0007] By adopting the above technical solution, the material to be crushed is first introduced into the inner cavity of the box. Then, the first servo motor drives the crushing shaft to rotate, which in turn drives the crushing blades to rotate, thereby crushing the incoming straw. The crushed straw material is then discharged through the discharge shell, thus achieving material discharge. During the rotation of the crushing shaft, the rotating shaft can also drive the fan blades to rotate, thereby generating air. The air enters the air distribution pipe and is discharged through the air distribution pipe. The air force blows onto the crushing shaft in the inner cavity of the box, thereby blowing away the material adhering to its surface. This helps to reduce material adhesion and prevents the adhering material from affecting the crushing. At the same time, it can also blow the material in the discharge channel, thereby assisting in the discharge and improving the discharge effect.
[0008] In a preferred embodiment of the present invention, a second servo motor is fixedly installed on the lower side of one side wall of the housing. The transmission shaft of the second servo motor movably passes through the housing and is fixedly connected to a rotating shaft. The outer end of the rotating shaft is rotatably connected to the inner wall of the housing, and a guide plate is fixedly fitted on the outer wall of the rotating shaft.
[0009] By adopting the above technical solution, the second servo motor drives the rotating shaft to rotate, which in turn drives the air guide plate to rotate. This allows the air blowing towards the crushing blades to be repeatedly redirected, thus blowing towards the crushing blades from different angles. This improves the impact on the material, which in turn improves the material being blown away, and further improves the effect of reducing material adhesion.
[0010] In a preferred embodiment of the present invention, a feed shell is fixedly connected to the upper side of one side wall of the box, and the feed shell is inclined.
[0011] In a preferred embodiment of this utility model, the bottom of the fixed shell is fixedly connected to the corresponding support plate via a connecting block.
[0012] In a preferred embodiment of this utility model, a bearing is fixedly mounted on the outer wall of the rotating shaft, and connecting rods are fixedly connected to all four sides of the outer wall of the bearing. The outer ends of the connecting rods are fixedly connected to the inner wall of the fixed shell.
[0013] In a preferred embodiment of this utility model, support plates are fixedly installed on three side walls of the box, and the tail ends of the three support plates are fixedly connected to the base.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] The crusher of this application technology solution can drive the crushing shaft to rotate through the first servo motor, which can drive the fan blade to rotate, thereby realizing air blowing. The air force is then guided into the air distribution pipe, and then guided along the holes at the bottom of the air distribution pipe to the crushing blade and the discharge channel, thereby assisting the discharge and reducing the adhesion of materials on the crushing blade, thus improving the crushing effect.
[0016] The second servo motor drives the air guide plate to rotate, which can repeatedly change the direction of the air blowing towards the crushing blades, so that the air blows towards the crushing blades from different angles. This helps to improve the impact effect on the material, which in turn helps to improve the effect of blowing the material away, and further helps to reduce the material adhesion. Attached Figure Description
[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of a pulverizer according to the present invention;
[0019] Figure 2 This is an enlarged structural schematic diagram of component A of a pulverizer according to the present invention;
[0020] Figure 3 This is a cross-sectional structural diagram of a crusher according to the present invention.
[0021] In the picture:
[0022] 1. Housing; 11. Feeding shell; 12. Support plate; 13. Base; 14. Discharge shell; 15. First servo motor; 16. Crushing shaft; 17. Crushing blade;
[0023] 2. Fixed housing; 21. Air duct; 22. Fan blade; 23. Bearing;
[0024] 3. Housing; 31. Second servo motor; 32. Rotating shaft; 33. Air guide plate; 34. Air distribution pipe. Detailed Implementation
[0025] Please see Figure 1-3 The present invention provides a technical solution: a crusher, including a box 1, and a discharge shell 14 is fixedly connected to the bottom of the box 1;
[0026] A first servo motor 15 is fixedly installed on one side wall of the housing 1. The drive shaft of the first servo motor 15 passes through the housing 1 and is fixedly connected to a crushing shaft 16. Multiple evenly distributed crushing blades 17 are fixedly connected to the outer wall of the crushing shaft 16. The crushing shaft 16 passes through the housing 1 and is fixedly connected to a rotating shaft. The outer end of the rotating shaft is inserted into the inner cavity of the fixed shell 2. Fan blades 22 are fixedly fitted on the outer wall of the rotating shaft. The top of the housing 1 is fixedly connected to a shell 3. An air distribution pipe 34 is fixedly installed on the upper side of the inner cavity of the shell 3. Multiple evenly distributed air distribution holes are opened at the bottom of the air distribution pipe 34. The output end of the fixed shell 2 is fixedly connected to a guide pipe 21. The outer end of the guide pipe 21 passes through the shell 3 and is connected to the air distribution pipe 34.
[0027] It should be understood that in actual use, the material to be crushed is first introduced into the inner cavity of the box 1. Then, the first servo motor 15 drives the crushing shaft 16 to rotate, which in turn drives the crushing blades 17 to rotate, thereby crushing the incoming straw. The crushed straw material is then discharged through the discharge shell 14, thus achieving discharge. During the rotation of the crushing shaft 16, the rotating shaft is driven to rotate, which in turn causes the fan blades 22 to rotate, thereby generating air. The air enters the air distribution pipe 34 and is discharged through the air distribution pipe 34. The air force blows onto the crushing shaft 16 in the inner cavity of the box 1, thereby blowing away the material attached to its surface. This helps to reduce material adhesion and prevents the attached material from affecting the crushing. At the same time, it can also blow the material in the discharge channel, thereby assisting in the discharge and improving the discharge effect.
[0028] Furthermore, support plates 12 are fixedly installed on the three side walls of the housing 1. The tail ends of the three support plates 12 are fixedly connected to the base 13. The setting of the support plates 12 and the base 13 makes it convenient to support the whole device and ensures the overall stability of the device.
[0029] Furthermore, a bearing 23 is fixedly mounted on the outer wall of the rotating shaft, and connecting rods are fixedly connected to all four sides of the outer wall of the bearing 23. The outer ends of the connecting rods are fixedly connected to the inner wall of the fixed shell 2.
[0030] It should be understood that the bearing 23 ensures high stability in the rotation of the fan blade 22 driven by the shaft.
[0031] It is worth mentioning that the bottom of the fixed shell 2 is fixedly connected to the corresponding support plate 12 through a connecting block. The setting of the connecting block ensures the stability of the fixed shell 2.
[0032] like Figure 1 As shown; a feed shell 11 is fixedly connected to the upper side of one side wall of the box body 1. The feed shell 11 is inclined. The setting of the feed shell 11 allows the straw that needs to be crushed to be accurately introduced into the inner cavity of the box body 1, so that the straw can be crushed.
[0033] like Figure 1 and 3 As shown; a second servo motor 31 is fixedly installed on the lower side of one side wall of the housing 3. The drive shaft of the second servo motor 31 movably passes through the housing 3 and is fixedly connected to a rotating shaft 32. The outer end of the rotating shaft 32 is rotatably connected to the inner wall of the housing 3. A guide plate 33 is fixedly fitted on the outer wall of the rotating shaft 32.
[0034] It should be understood that by driving the rotating shaft 32 to rotate through the second servo motor 31, the air guide plate 33 can be rotated, thereby repeatedly changing the direction of the air blowing towards the crushing blade 17, so as to blow the air towards the crushing blade 17 from different angles, which is conducive to improving the impact effect on the material, thereby improving the effect of the material being blown away, and further improving the effect of reducing material adhesion.
[0035] Furthermore, in this document, relational terms such as "first" and "second" are used merely 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. Moreover, 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.
[0036] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the specific embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pulverizer, comprising a housing (1), characterized in that: The bottom of the box (1) is fixedly connected to the discharge shell (14). A first servo motor (15) is fixedly installed on one side wall of the housing (1). The drive shaft of the first servo motor (15) passes through the housing (1) and is fixedly connected to a crushing shaft (16). Multiple evenly distributed crushing blades (17) are fixedly connected to the outer wall of the crushing shaft (16). The crushing shaft (16) passes through the housing (1) and is fixedly connected to a rotating shaft. The outer end of the rotating shaft is inserted into the inner cavity of the fixed shell (2). Fan blades (22) are fixedly fitted on the outer wall of the rotating shaft. The top of the housing (1) is fixedly connected to a shell (3). An air distribution pipe (34) is fixedly installed on the upper side of the inner cavity of the shell (3). Multiple evenly distributed air distribution holes are opened at the bottom of the air distribution pipe (34). The output end of the fixed shell (2) is fixedly connected to a guide pipe (21). The outer end of the guide pipe (21) passes through the shell (3) and is connected to the air distribution pipe (34).
2. The pulverizer according to claim 1, characterized in that: A second servo motor (31) is fixedly installed on the lower side of one side wall of the housing (3). The transmission shaft of the second servo motor (31) passes through the housing (3) and is fixedly connected to a rotating shaft (32). The outer end of the rotating shaft (32) is rotatably connected to the inner wall of the housing (3). A guide plate (33) is fixedly fitted on the outer wall of the rotating shaft (32).
3. A pulverizer according to claim 1, characterized in that: The upper side of one side wall of the box (1) is fixedly connected to the feed shell (11), and the feed shell (11) is inclined.
4. A pulverizer according to claim 1, characterized in that: The bottom of the fixed shell (2) is fixedly connected to the corresponding support plate (12) by a connecting block.
5. A pulverizer according to claim 1, characterized in that: The outer wall of the rotating shaft is fixedly fitted with a bearing (23), and the four sides of the outer wall of the bearing (23) are fixedly connected with connecting rods. The outer end of the connecting rod is fixedly connected to the inner wall of the fixed shell (2).
6. A pulverizer according to claim 1, characterized in that: The three side walls of the box (1) are fixedly installed with support plates (12), and the tail ends of the three support plates (12) are fixedly connected to the base (13).