A bamboo powder production system
By employing a combination of two crushing and drying units in the bamboo powder production system, along with cyclone separation and pulse separation modules, the problems of bamboo powder fineness and uniformity were solved, achieving the production of fine bamboo powder with uniform particle size.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CHUANGDE HSINCHU IND CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-07-10
AI Technical Summary
In existing technologies, it is difficult to guarantee the fineness and uniformity of bamboo powder, especially after one grinding process, it is difficult to achieve good particle size and uniformity.
The process employs a two-stage pulverization method. By adding a drying unit after the primary pulverization unit, the drying process is more thorough, ensuring the dryness of the coarse bamboo powder. Then, a secondary pulverization is carried out in the secondary pulverization unit, combined with multiple separations using cyclone separation and pulse separation modules, to obtain fine bamboo powder with uniform particle size.
This improved the fineness and uniformity of bamboo powder, ensuring the uniformity of bamboo powder particle size and meeting the production requirements of composite materials.
Smart Images
Figure CN224476329U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of bamboo powder preparation technology, specifically a bamboo powder production system. Background Technology
[0002] With increasing environmental awareness and the severity of plastic pollution, the concept of "replacing plastic with bamboo" has gradually gained attention and become a new trend in sustainable development. Bamboo, as a fast-growing and environmentally friendly natural material, is increasingly being used to replace traditional plastics due to its superior physical properties and biodegradability, making it an eco-friendly choice.
[0003] Replacing plastic with bamboo utilizes the properties of bamboo to apply it to areas traditionally made of plastic, thereby reducing plastic use and protecting the environment. For example, in packaging, bamboo can be made into bamboo fiber packaging materials, which not only have similar strength and durability to plastic but are also biodegradable and environmentally friendly. In construction, bamboo can be used to make furniture, flooring, and walls, and its natural texture and eco-friendly characteristics are highly valued.
[0004] Bamboo powder, a product of crushed bamboo, has a fine granular structure and is widely used in the manufacture of composite materials. In the process of "replacing plastics with bamboo," bamboo powder serves as an important raw material, capable of being mixed with polymer matrices (such as PLA and PP). During production, the bamboo powder needs to maintain a certain fineness to generate composite materials with good strength and toughness. These bamboo powder composites not only retain the functions of traditional plastics but also reduce the environmental burden of materials.
[0005] CN107745430A discloses a production line for preparing bamboo powder from moso bamboo raw materials, including a cutting machine for cutting moso bamboo into bamboo strips, a crusher for crushing the bamboo strips into bamboo powder, and a bamboo powder collection room for collecting the bamboo powder. The above technical solution features ingenious and compact design of each processing step, resulting in high production efficiency and effectively reducing bamboo powder dust pollution. However, the above technical solution only employs a single crushing process, making it difficult to guarantee the fineness and uniformity of the bamboo powder. Utility Model Content
[0006] The purpose of this application is to provide a bamboo powder production system. This system adopts a two-stage crushing method. By adding a drying unit after the primary crushing unit, the drying process is easier and more thorough, ensuring the dryness of the coarse bamboo powder and improving the effect of the secondary crushing. The dried coarse bamboo powder is then subjected to secondary crushing in a secondary crushing unit to obtain fine bamboo powder with uniform particle size, ensuring the fineness and uniformity of the bamboo powder.
[0007] To achieve the above objectives, this application provides the following technical solution:
[0008] A bamboo powder production system includes a primary crushing unit, a drying unit, a secondary crushing unit, a separation unit, and an induced draft unit;
[0009] The primary crushing unit is used to crush bamboo segments into coarse bamboo powder, and then convey the coarse bamboo powder to the drying unit;
[0010] The drying unit is used to dry the coarse bamboo powder and then convey the dried coarse bamboo powder to the secondary grinding unit;
[0011] The secondary crushing unit is used to crush the dried coarse bamboo powder into fine bamboo powder, and then convey the fine bamboo powder to the separation unit;
[0012] The separation unit is used to separate fine bamboo powder and output the separated fine bamboo powder;
[0013] The exhaust fan unit is used to maintain the separation unit in a negative pressure environment.
[0014] Preferably, the separation unit includes a cyclone separation module and a pulse separation module. The cyclone separation module is provided with a first feed inlet, a first discharge outlet, and a first discharge outlet. The secondary crushing unit conveys the fine bamboo powder to the cyclone separation module through the first feed inlet for primary separation and outputs the fine bamboo powder after primary separation at the first discharge outlet. The fine bamboo powder that is not separated is conveyed to the pulse separation module through the first discharge outlet for secondary separation and outputs the fine bamboo powder after secondary separation. The induced draft unit is used to maintain the cyclone separation module and the pulse separation module in a negative pressure environment.
[0015] Preferably, the bamboo powder production system further includes a first powder conveying device, which includes a first feed hopper and a first auger conveying module connected to the output end of the first feed hopper. The first feed hopper is located below the first discharge port, and the first auger conveying module is used to convey the fine bamboo powder after primary separation to the secondary crushing unit for further crushing.
[0016] Preferably, the primary crushing unit includes a bamboo and wood crusher, a blower module connected to one side of the bamboo and wood crusher, a cyclone separator, and a second powder conveying device. The cyclone separator is provided with a second feed inlet and a second discharge outlet. The bamboo and wood crusher is used to crush bamboo segments into coarse bamboo powder. The blower module is used to convey the coarse bamboo powder to the cyclone separator through the second feed inlet and discharge it into the second powder conveying device through the second discharge outlet. The second powder conveying device is used to convey the coarse bamboo powder to the drying unit.
[0017] Preferably, the second powder conveying device includes a second feed hopper and a second auger conveying module connected to the output end of the second feed hopper. The second feed hopper is located below the second discharge port, and the second auger conveying module is used to convey coarse bamboo powder to the drying unit.
[0018] Preferably, the drying unit includes a flash dryer, a pulse separation device, and a third powder conveying device. The second auger conveying module is used to convey coarse bamboo powder to the flash dryer. The flash dryer conveys the dried coarse bamboo powder to the pulse separation module. The coarse bamboo powder separated by the pulse separation device is output to the third powder conveying device and then conveyed to the secondary crushing unit. The first auger conveying module conveys the fine bamboo powder after primary separation to the third powder conveying device.
[0019] Preferably, the third powder conveying device includes a third feed hopper and a third auger conveying module connected to the output end of the third feed hopper. The third feed hopper is located below the pulse separation device. The third auger conveying module is used to convey the separated coarse bamboo powder to the secondary crushing unit. The first auger conveying module is used to convey the separated fine bamboo powder to the third feed hopper.
[0020] Preferably, the bamboo powder production system further includes a drying unit, which includes a mesh belt conveyor and a fan hood connected to the mesh belt conveyor. The fan hood is equipped with an air inlet pipe and an air return pipe. The air inlet pipe is connected to an external hot air output device, and the air return pipe is connected to an external hot air recovery device. The fan hood is equipped with multiple air nozzles for outputting hot air and air return ports for recovering hot air. The air nozzles are connected to the air inlet pipe, and the air return ports are connected to the air return pipe. The drying unit is used to transport the pre-dried bamboo segments to the primary crushing unit.
[0021] Preferably, the secondary crushing unit is a horizontal impact mill.
[0022] Preferably, the induced draft unit is an induced draft fan, the input end of which is connected to the separation unit, and the output end of which is connected to the external dust treatment equipment.
[0023] Compared with the prior art, the beneficial effects of this application are:
[0024] This application employs a two-stage pulverization method. By adding a drying unit after the primary pulverization unit, drying becomes easier and more thorough, ensuring the dryness of the coarse bamboo powder and improving the effect of the secondary pulverization. The dried coarse bamboo powder is then pulverized a second time through a secondary pulverization unit to obtain fine bamboo powder with uniform particle size, ensuring the fineness and uniformity of the bamboo powder. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the bamboo powder production system of Example 1;
[0026] Figure 2 This is a schematic diagram of the drying unit of the bamboo powder production system in Example 1;
[0027] The labels for each item are as follows:
[0028] Drying unit 1; primary crushing unit 2; secondary crushing unit 3; separation unit 4; induced draft unit 5; first powder conveying device 6; drying unit 7; mesh belt conveyor 11; air hood 12; bamboo and wood crusher 21; blower module 22; cyclone separator 23; second powder conveying device 24; cyclone separation module 41; pulse separation module 42; first feed hopper 61; first auger conveyor module 62; flash dryer 71; third powder conveying device 72; pulse separation device 73; air inlet pipe 121; air return pipe 122; air outlet 123; air return port 124; second feed inlet 231; second discharge port 232; second feed hopper 241; second auger conveyor module 242; first feed inlet 411; first discharge port 412; first discharge port 413; external dust treatment equipment A; external hot air equipment B. Detailed Implementation
[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0030] Example 1
[0031] refer to Figure 1 and Figure 2 A bamboo powder production system includes a primary crushing unit 2, a drying unit 7, a secondary crushing unit 3, a separation unit 4, and an exhaust fan unit 5;
[0032] The primary crushing unit 2 is used to crush bamboo segments into coarse bamboo powder, and then convey the coarse bamboo powder to the drying unit 7;
[0033] Drying unit 7 is used to dry coarse bamboo powder and convey the dried coarse bamboo powder to secondary crushing unit 3;
[0034] The secondary crushing unit 3 is used to crush the dried coarse bamboo powder into fine bamboo powder for a second time, and then convey the fine bamboo powder to the separation unit 4;
[0035] Separation unit 4 is used to separate fine bamboo powder and output the separated fine bamboo powder;
[0036] The air intake unit 5 is used to maintain the separation unit 4 in a negative pressure environment.
[0037] In this design, the operator puts bamboo segments into the primary crushing unit 2, where the bamboo segments are crushed into coarse bamboo powder. The coarse bamboo powder is then conveyed to the drying unit 7 for drying. The drying unit 7 conveys the dried coarse bamboo powder to the secondary crushing unit 3 for secondary crushing. The coarse bamboo powder is then crushed into fine bamboo powder by the secondary crushing unit 3. After being separated by the separation unit 4, the light product is discharged through the induced draft unit 5, while the heavy product is the separated fine bamboo powder.
[0038] In this way, a drying unit 7 is added after the primary crushing unit, making drying easier and more thorough, ensuring the dryness of the coarse bamboo powder, and improving the effect of secondary crushing. The dried coarse bamboo powder is then crushed a second time by the secondary crushing unit 3 to obtain fine bamboo powder with uniform particle size, ensuring the fineness and uniformity of the bamboo powder.
[0039] It should be noted that in this embodiment, the induced draft unit 5 is an induced draft fan. The input end of the induced draft fan is connected to the separation unit 4, and the output end of the induced draft fan is connected to the external dust treatment equipment A. Therefore, lightweight products will be discharged into the external dust treatment equipment A under the action of the induced draft fan.
[0040] In this embodiment, the separation unit 4 includes a cyclone separation module 41 and a pulse separation module 42. The cyclone separation module 41 is provided with a first feed inlet 411, a first discharge outlet 412, and a first discharge outlet 413. The secondary crushing unit 3 conveys the fine bamboo powder to the cyclone separation module 41 through the first feed inlet 411 for primary separation and outputs the fine bamboo powder after primary separation at the first discharge outlet 413. The fine bamboo powder that is not separated is conveyed to the pulse separation module 42 through the first discharge outlet 412 for secondary separation and outputs the fine bamboo powder after secondary separation. The induced draft unit 5 is used to maintain the cyclone separation module 41 and the pulse separation module 42 in a negative pressure environment.
[0041] In practical use, the cyclone separation module 41 is a cyclone separator, while the pulse separation module 42 is a bag pulse separator. Both are conventional designs in powder separation, such as the technical solution disclosed in Chinese Patent CN102019217A.
[0042] The fine bamboo powder produced by the secondary crushing unit 3 enters the cyclone separation module 41 under negative pressure. The cyclone separation module 41 separates light and heavy products. The heavy product is the fine bamboo powder after the first separation, while the light product is fine bamboo powder with dust impurities. The light product will enter the pulse separation module 42 for further separation to obtain fine bamboo powder after the second separation. Some impurities will be discharged by the induced draft unit 5 to the external dust treatment equipment A for treatment.
[0043] Furthermore, if the fine bamboo powder after one separation cannot meet the requirements of subsequent processes, this embodiment also includes a first powder conveying device 6. The first powder conveying device 6 includes a first feed hopper 61 and a first auger conveying module 62 connected to the output end of the first feed hopper 61. The first feed hopper 61 is located below the first discharge port 413. The first auger conveying module 62 is used to convey the fine bamboo powder after one separation to the secondary crushing unit 3 for further crushing.
[0044] Specifically, the fine bamboo powder after the first separation enters the first feed hopper 61 of the first powder conveying device 6, and is guided by the first feed hopper 61 to the first auger conveying module 62. It is then conveyed by the first auger conveying module 62 to the secondary crushing unit 3 for further crushing, and this cycle continues until the fine bamboo powder that meets the requirements is obtained.
[0045] In this embodiment, the primary crushing unit 2 includes a bamboo and wood crusher 21, a blower module 22 connected to one side of the bamboo and wood crusher 21, a cyclone separator 23, and a second powder conveying device 24. The cyclone separator 23 is provided with a second feed inlet 231 and a second discharge outlet 232. The bamboo and wood crusher 21 is used to crush bamboo segments into coarse bamboo powder. The blower module 22 is used to convey the coarse bamboo powder to the cyclone separator 23 through the second feed inlet 231 and discharge it into the second powder conveying device 24 through the second discharge outlet 232. The second powder conveying device 24 is used to convey the coarse bamboo powder to the drying unit 7.
[0046] Among them, the bamboo and wood pulverizer 21 is prior art in this field, and the technical solution of the prior art Chinese patent CN104624323A can be referred to. Specifically, the bamboo and wood pulverizer 21 corresponds to the whole composed of the upper body and the lower body of the above technical solution, and the blower module 22 corresponds to the fan of the above technical solution. Implicitly, the cyclone separator 23 is connected to the external dust treatment equipment A through the blower.
[0047] Preferably, the second powder conveying device 24 includes a second feed hopper 241 and a second auger conveying module 242 connected to the output end of the second feed hopper 241. The second feed hopper 241 is located below the second discharge port 232, and the second auger conveying module 242 is used to convey coarse bamboo powder to the drying unit 7.
[0048] The second powder conveying device 24 and the first powder conveying device 6 have the same structure and working principle, so they will not be described in detail in this embodiment.
[0049] Preferably, the drying unit 7 includes a flash dryer 71, a pulse separation device 73, and a third powder conveying device 72. The second auger conveying module 242 is used to convey coarse bamboo powder to the flash dryer 71. The flash dryer 71 conveys the dried coarse bamboo powder to the pulse separation device 73. The coarse bamboo powder separated by the pulse separation device 73 is output to the third powder conveying device 72 and conveyed to the secondary crushing unit 3 by the third powder conveying device 72. The first auger conveying module 62 conveys the fine bamboo powder after the first separation to the third powder conveying device 72.
[0050] Specifically, the flash dryer 71 is existing technology. Coarse bamboo powder enters the flash dryer 71 under the drive of the second auger conveyor module 242. Through the high-speed vortex action within the flash dryer 71 and the input of hot air, the coarse bamboo powder is dried and then conveyed to the pulse separation device 73. In this embodiment, the flash dryer 71 is connected to an external hot air device B. The pulse separation device 73 is also a bag filter pulse separator and is connected to an external induced draft device. The separated light product is output to the external dust treatment device A through the external induced draft device. After separation by the pulse separation device 73, the coarse bamboo powder is conveyed to the secondary crushing unit 3 through the third powder conveying device 72. To avoid material blockage in the secondary crushing unit 3, the first auger conveyor module 62 conveys the fine bamboo powder after primary separation to the third powder conveying device 72 for mixing and conveying.
[0051] Preferably, the third powder conveying device 72 includes a third feed hopper 721 and a third auger conveying module 722 connected to the output end of the third feed hopper 721. The third feed hopper 721 is located below the pulse separation device 73. The third auger conveying module 722 is used to convey the separated coarse bamboo powder to the secondary crushing unit 3. The first auger conveying module 62 is used to convey the separated fine bamboo powder to the third feed hopper 721.
[0052] Specifically, the third powder conveying device 72 has the same structure and principle as the second powder conveying device 24 and the first powder conveying device 6. The specific working method can be referred to the first powder conveying device 6. Therefore, the third powder conveying device 72 will not be described in detail in this embodiment.
[0053] See Figure 1 It should be noted that the first auger conveyor module 62 shown in the figure is only to illustrate its relationship with the third feed hopper 721, and does not represent that the first auger conveyor module 62 should be set to the length shown in the figure according to the present invention in actual use.
[0054] In this embodiment, a drying unit 1 is also included. The drying unit 1 includes a mesh belt conveyor 11 and a fan hood 12 connected to the mesh belt conveyor 11. The fan hood 12 is provided with an air inlet pipe 121 and an air return pipe 122. The air inlet pipe 121 is connected to an external hot air output device, and the air return pipe 122 is connected to an external hot air recovery device. The fan hood 12 is provided with a plurality of air outlets 123 for outputting hot air and air return ports 124 for recovering hot air. The air outlets 123 are connected to the air inlet pipe 121, and the air return ports 124 are connected to the air return pipe 122. The drying unit 1 is used to transport the bamboo segments after initial drying to the primary crushing unit 2.
[0055] In practical use, by adding a drying unit 1 before the primary crushing unit 2, the bamboo can be dried while the bamboo becomes more brittle, the fiber shrinkage is more stable, the particle size after crushing is easier to control, and the uniformity of the coarse bamboo powder is guaranteed.
[0056] Specifically, the external hot air output device delivers hot air through the air inlet pipe 121 to the air hood 12 and outputs it from the air outlet 123 on the air hood 12, blowing the hot air onto the bamboo segments located on the mesh belt conveyor 11 to dry the bamboo segments, increase the brittleness of the bamboo segments, and ensure the uniformity during subsequent crushing. The mesh belt conveyor 11 used has a mesh structure on the surface of the conveyor belt, which facilitates the passage of hot air through the conveyor belt and is recovered through the return air port 124 and the return air pipe 122.
[0057] Preferably, the secondary crushing unit 3 is a horizontal impact mill. Specifically, the horizontal impact mill is existing technology, so it will not be described in detail in this embodiment. For the specific structure, please refer to Chinese Patent CN215541323U.
[0058] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A bamboo powder production system, characterized in that, It includes a primary grinding unit, a drying unit, a secondary grinding unit, a separation unit, and an induced draft unit; The primary crushing unit is used to crush bamboo segments into coarse bamboo powder, and then convey the coarse bamboo powder to the drying unit; The drying unit is used to dry the coarse bamboo powder and then convey the dried coarse bamboo powder to the secondary crushing unit. The secondary crushing unit is used to crush the dried coarse bamboo powder into fine bamboo powder for a second time, and then convey the fine bamboo powder to the separation unit; The separation unit is used to separate fine bamboo powder and output the separated fine bamboo powder; The air intake unit is used to maintain the separation unit in a negative pressure environment.
2. The bamboo powder production system according to claim 1, characterized in that, The separation unit includes a cyclone separation module and a pulse separation module. The cyclone separation module is provided with a first feed inlet, a first discharge outlet, and a first discharge outlet. The secondary crushing unit feeds fine bamboo powder through the first feed inlet to the cyclone separation module for primary separation and outputs the fine bamboo powder after primary separation at the first discharge outlet. The fine bamboo powder that is not separated is fed through the first discharge outlet to the pulse separation module for secondary separation and outputs the fine bamboo powder after secondary separation. The induced draft unit is used to maintain the cyclone separation module and the pulse separation module in a negative pressure environment.
3. The bamboo powder production system according to claim 2, characterized in that, The bamboo powder production system also includes a first powder conveying device, which includes a first feed hopper and a first auger conveying module connected to the output end of the first feed hopper. The first feed hopper is located below the first discharge port, and the first auger conveying module is used to convey the fine bamboo powder after primary separation to the secondary crushing unit for further crushing.
4. The bamboo powder production system according to claim 3, characterized in that, The primary crushing unit includes a bamboo and wood crusher, a blower module connected to one side of the bamboo and wood crusher, a cyclone separator, and a second powder conveying device. The cyclone separator is provided with a second inlet and a second outlet. The bamboo and wood crusher is used to crush bamboo segments into coarse bamboo powder. The blower module is used to convey the coarse bamboo powder to the cyclone separator through the second inlet and discharge it into the second powder conveying device through the second outlet. The second powder conveying device is used to convey the coarse bamboo powder to the drying unit.
5. The bamboo powder production system according to claim 4, characterized in that, The second powder conveying device includes a second feed hopper and a second auger conveying module connected to the output end of the second feed hopper. The second feed hopper is located below the second discharge port, and the second auger conveying module is used to convey coarse bamboo powder to the drying unit.
6. The bamboo powder production system according to claim 5, characterized in that, The drying unit includes a flash dryer, a pulse separation device, and a third powder conveying device. The second auger conveying module is used to convey coarse bamboo powder to the flash dryer. The flash dryer conveys the dried coarse bamboo powder to the pulse separation module. The coarse bamboo powder separated by the pulse separation device is output to the third powder conveying device and then conveyed to the secondary crushing unit. The first auger conveying module conveys the fine bamboo powder after primary separation to the third powder conveying device.
7. The bamboo powder production system according to claim 6, characterized in that, The third powder conveying device includes a third feed hopper and a third auger conveying module connected to the output end of the third feed hopper. The third feed hopper is located below the pulse separation device. The third auger conveying module is used to convey the separated coarse bamboo powder to the secondary crushing unit. The first auger conveying module is used to convey the separated fine bamboo powder to the third feed hopper.
8. The bamboo powder production system according to claim 1, characterized in that, The bamboo powder production system also includes a drying unit, which includes a mesh belt conveyor and a hood connected to the mesh belt conveyor. The hood is equipped with an air inlet pipe and an air return pipe. The air inlet pipe is connected to an external hot air output device, and the air return pipe is connected to an external hot air recovery device. The hood is equipped with multiple air nozzles for outputting hot air and air return ports for recovering hot air. The air nozzles are connected to the air inlet pipe, and the air return ports are connected to the air return pipe. The drying unit is used to transport the pre-dried bamboo segments to the primary crushing unit.
9. The bamboo powder production system according to claim 1, characterized in that, The secondary crushing unit is a horizontal impact mill.
10. The bamboo powder production system according to claim 1, characterized in that, The induced draft unit is an induced draft fan. The input end of the induced draft fan is connected to the separation unit, and the output end of the induced draft fan is connected to the external dust treatment equipment.