Bamboo powder manufacturing process

Abstract

The invention discloses a bamboo powder manufacturing process. The process aims at solving the problems that in existing static soaking pretreatment, the efficiency is low, and the quality of subsequent finished products is unstable due to the fact that bamboo chips absorb water unevenly. The core of the method is that in the step S1, bamboo wood pretreatment is conducted, specifically, a hopper containing bamboo chips moves in a soaking tank in the direction B, meanwhile, soaking liquid flows in the tank in the opposite direction A, and continuous countercurrent soaking is formed; according to the method, efficient and uniform softening of the bamboo chips is achieved. And the pretreated bamboo chips are subjected to drying, coarse grinding, superfine grinding and grading treatment, and the superfine bamboo powder is obtained. Through the key technology of countercurrent soaking, the softening uniformity and efficiency of the bamboo chips are improved, and raw materials with uniform properties are fundamentally provided for subsequent procedures, so that comprehensive energy consumption is reduced, and it is guaranteed that the 1200-mesh bamboo powder product has excellent particle size distribution uniformity and high whiteness.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of deep processing of bamboo and particularly relates to a bamboo powder manufacturing process. BACKGROUND

[0002] As a kind of biomass resource with rapid growth and strong renewability, bamboo is increasingly valued for high-value utilization. Bamboo can be processed into ultra-fine bamboo powder, which can be widely used in the fields of high polymer composite materials, environment-friendly coatings, high-end cosmetics and the like, and has a broad market prospect.

[0003] At present, the two-step process combining "coarse crushing" and "ultra-fine crushing + classification" is usually adopted for industrialized production of ultra-fine bamboo powder (such as 1200 mesh). However, this process faces a technical bottleneck that has not been effectively solved for a long time: the bamboo itself has strong fiber toughness and dense structure, and direct mechanical crushing will result in extremely high energy consumption and serious equipment wear, and excessive heat is easily generated during the crushing process, which causes thermal denaturation of the bamboo powder and affects the whiteness and quality of the product.

[0004] In order to soften the bamboo and reduce the crushing difficulty, the prior art usually performs soaking pretreatment on the bamboo before crushing. However, the traditional soaking method is mostly static pool soaking, that is, the bamboo pieces are placed in a pool for a long time. This method has the following technical problems: (1) long soaking period and low efficiency; (2) static soaking causes uneven water absorption of the upper and lower layers of the bamboo pieces, resulting in large difference in water content, unstable drying and crushing conditions in the subsequent process, and finally affecting the particle size distribution and quality uniformity of the bamboo powder product. SUMMARY

[0005] The present application aims to solve the above technical problems in the prior art and provides a bamboo powder manufacturing process, which can perform efficient and uniform pretreatment on the bamboo and solve the technical problems of low efficiency and unstable quality of the finished product in the production of bamboo powder.

[0006] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0007] A bamboo powder manufacturing process, characterized in that it specifically comprises the following steps:

[0008] S1, pretreatment of the bamboo:

[0009] (1) cutting the bamboo into bamboo pieces;

[0010] (2) placing the bamboo pieces in a hopper with through holes, then installing the hopper in the inner cavity of a soaking tank, and then introducing water into the liquid inlet of the soaking tank, which flows out of the liquid outlet, so that the water flows in the inner cavity of the soaking tank, and the flow direction of the water is direction A, and the bamboo pieces in the hopper are soaked in the water;

[0011] (3) controlling the hopper to move in the soaking tank, controlling the moving direction of the hopper to be direction B, direction B is opposite to direction A, so that the bamboo chips in the hopper are contacted with the water flowing reversely, and the bamboo chips are soaked in the soaking tank;

[0012] (4) taking the hopper out of the soaking tank, and placing the hopper on the soaking tank, then washing the bamboo chips in the hopper, and naturally draining the bamboo chips;

[0013] S2, drying treatment: taking out the drained bamboo chips in the hopper, and drying the bamboo chips, so that the water content of the bamboo chips is reduced to below 10%;

[0014] S3, coarse crushing: sending the dried bamboo chips into a crusher to preliminarily crush the bamboo chips into coarse particle bamboo powder;

[0015] S4, ultrafine crushing: sending the coarse particle bamboo powder into an ultrafine crusher to perform ultrafine crushing treatment on the coarse particle bamboo powder;

[0016] S5, classification treatment: taking the ultrafine crushed material into a turbo classifier, and controlling the fineness of the finished bamboo powder by adjusting the rotating speed of the turbo classifier.

[0017] Further, a lifting mechanism is used to convey the soaking tank;

[0018] The lifting mechanism comprises a shell, a driving motor, a chain and a limiting plate one, the shell is rotationally connected with a rotating shaft, a sprocket is fixed on the rotating shaft, the chain is connected on the sprocket, the driving motor is fixed on the shell and drives the rotating shaft to rotate, the limiting plate one is fixed on the chain, the limiting plate one is provided with a limiting hole one, and the outer side of the hopper is fixed with a limiting column;

[0019] 1) the shell of the lifting mechanism is installed in the inner cavity of the soaking tank, and sealing glue is arranged at the contact position of the shell and the soaking tank, a liquid flow channel is formed between the shell and the soaking tank, and the liquid inlet and the liquid outlet are communicated with the liquid flow channel;

[0020] 2) the bamboo chips are placed in the hopper with through holes, then the hopper is placed on the limiting plate one, the limiting column of the hopper is penetrated through the limiting hole one of the limiting plate one, the hopper is leaned against the limiting part one of the limiting plate one, then a rubber ring with elasticity is sleeved on the limiting column, and the rubber ring is limited on the limiting part one, so that the hopper is limited on the limiting plate one and is in the liquid flow channel;

[0021] 3) water is introduced into the liquid inlet of the soaking tank, the water flows in the liquid flow channel, and the water flows out of the liquid outlet, at this time, the driving motor is started, the driving motor drives the chain to run, and the limiting plate one moves along direction B with the hopper.

[0022] Furthermore, a release assembly is used to remove the hopper from the soaking tank. The release assembly includes a screw motor, a screw nut, a screw, a cylinder, and a pusher. The screw motor is fixed to the outside of the housing, and the housing is fixed with a support base. The screw motor drives the screw to rotate on the support base. The screw nut is connected to the screw and moves back and forth linearly on the screw. The screw nut is fixed with a fixed base. The cylinder is fixed on the fixed base. The housing is provided with a sliding groove. The pusher passes through the sliding groove and is installed on the cylinder. The bottom of the housing is provided with a second cylinder. The second cylinder is provided with a support plate. The support plate is located in the area between the chain and the liquid inlet.

[0023] The specific steps for removing the hopper from the soaking tank are as follows:

[0024] (1) When the limit plate moves to the set position, the cylinder is activated and the cylinder controls the pusher to move towards the center line of the outer shell.

[0025] (2) Activate cylinder two, cylinder two drives the support plate to rise to the set height, so that the top surface of the support plate is flush with the top surface of the limit plate one.

[0026] (3) Turn on the screw motor and control the screw nut to move towards the liquid inlet on the screw. At this time, the pusher also moves towards the liquid inlet. The pusher contacts the ear plate on the outside of the hopper and applies force to the ear plate, so that the hopper moves from the limiting plate to the support plate. At this time, the limiting post of the hopper comes out from the limiting hole of the limiting plate and the rubber ring on the limiting post falls to the bottom of the outer shell. When the hopper comes off the limiting plate and is placed on the support plate, stop the screw motor to realize the hopper's release.

[0027] Furthermore, the soaking tank is equipped with an inspection port, which is correspondingly set with the detachment component. The inspection port is detachable and has an inspection plate.

[0028] Furthermore, when the hopper is dislodged, a second limiting plate is placed on the top of the outer shell. The protrusion at the bottom of the second limiting plate is embedded in the limiting groove of the outer shell. At this time, the second limiting plate is limited at the top of the outer shell. Then, the hopper is placed on the second limiting plate, and the limiting post of the hopper is passed through the second limiting hole of the second limiting plate. The hopper rests against the second limiting part of the second limiting plate. The hopper is opened, and clean water is sprayed into the hopper through a water pipe to rinse the bamboo strips in the hopper.

[0029] Furthermore, the interior of the soaking tank is provided with a connecting part one, and the top of the outer shell is provided with a connecting part two. When the outer shell of the lifting mechanism is placed into the inner cavity of the soaking tank, a bolt is screwed in between the connecting part two and the connecting part one.

[0030] Furthermore, in step S1, the length of the bamboo strip is 10-30 mm and the width is 2-8 mm.

[0031] Furthermore, in step S1, the bamboo strips are soaked in the soaking tank for 30 to 60 minutes.

[0032] Further, in step S3, the particle size of the coarse bamboo powder is 1-5 mm.

[0033] Further, in step S5, the fineness of the finished bamboo powder reaches 1200 mesh.

[0034] The present application has the following beneficial effects due to the adoption of the above technical solutions:

[0035] 1. In the step S1 of bamboo material pretreatment, the present application controls the reverse movement of the hopper and water flow to ensure that each piece of bamboo material can undergo sufficient soaking process, and realizes the high uniformity of bamboo moisture content and softening degree. This homogenized raw material provides stable working condition for subsequent drying, coarse crushing and ultrafine crushing, and fundamentally solves the problem of batch difference of the final product caused by the fluctuation of raw material properties, and ensures the uniformity of particle size distribution and quality of the bamboo powder product.

[0036] 2. The countercurrent soaking treatment method of the present application softens the fiber structure of the bamboo material and destroys its tough mechanical properties, so that the resistance of subsequent coarse crushing and ultrafine crushing is greatly reduced. After adopting the present process, the comprehensive energy consumption from bamboo chips to finished ultrafine bamboo powder is reduced by more than 35% compared with the traditional "static soaking + crushing" process.

[0037] 3. The present application changes the intermittent static soaking to continuous dynamic soaking, and shortens the pretreatment time from the traditional two hours to tens of minutes. This step can seamlessly connect with the subsequent drying, crushing and grading processes to form an efficient and smooth automated production line, greatly improving the equipment utilization rate and overall production efficiency, and meeting the needs of modern large-scale industrial production.

[0038] 4. The uniform softening of bamboo material reduces the severe wear and impact on key components such as hammer pieces, tooth rings of the crusher and inner lining of the ultrafine crusher. Therefore, the replacement cycle of key wear parts is prolonged, which not only reduces the maintenance cost, but also reduces the production loss caused by downtime for replacing parts. BRIEF DESCRIPTION OF DRAWINGS

[0039] The present application will be further described below in conjunction with the drawings:

[0040] Figure 1 is a structural schematic view of the soaking tank;

[0041] Figure 2 is a structural schematic view of the lifting mechanism;

[0042] Figure 3 is a structural schematic view of the driving motor driving the rotating shaft;

[0043] Figure 4 is a structural schematic view of the disengagement assembly;

[0044] Figure 5 Structure diagram for connecting the second cylinder and the support plate;

[0045] Figure 6 Structure diagram for the hopper;

[0046] Figure 7 Structure diagram for installing the shell of the lifting mechanism in the inner cavity of the soaking tank;

[0047] Figure 8 Structure diagram for limiting the hopper on the first limiting plate;

[0048] Figure 9 Structure diagram for Figure 8 the front view;

[0049] Figure 10 Structure diagram for Figure 9 the section view of C-C direction;

[0050] Figure 11 Structure diagram for the movement of the pushing piece of the first cylinder to the center line direction of the shell;

[0051] Figure 12 Structure diagram for the hopper to be taken out;

[0052] Figure 13 Structure diagram for washing the bamboo chips in the hopper;

[0053] Figure 14 Structure diagram for the second limiting plate.

[0054] In the drawings, 1 is a soaking tank; 2 is a liquid inlet; 3 is a liquid outlet; 4 is an inner cavity; 5 is a first connecting part; 6 is an inspection hole; 7 is a shell; 8 is a rotating shaft; 9 is a chain; 10 is a first limiting plate; 11 is a first limiting part; 12 is a first limiting hole; 13 is a chain wheel; 14 is a driving motor; 15 is a mounting bracket; 16 is a screw rod motor; 17 is a screw rod; 18 is a screw rod nut; 19 is a support seat; 20 is a fixed seat; 21 is a first cylinder; 22 is a pushing piece; 23 is a sliding groove; 24 is a second cylinder; 25 is a support plate; 26 is a hopper; 27 is a cavity; 28 is a through hole; 29 is a limiting column; 30 is an ear plate; 31 is an end cover; 32 is a clamping part; 33 is a liquid flow channel; 34 is an inspection plate; 35 is a second connecting part; 36 is a bolt; 37 is a rubber ring; 38 is a second limiting plate; 39 is a limiting groove; 40 is a protruding block; 41 is a second limiting part; 42 is a second limiting hole. DETAILED DESCRIPTION

[0055] The present application provides a bamboo powder manufacturing process for efficiently and uniformly producing 1200-mesh ultra-fine bamboo powder.

[0056] The process pre-treats the bamboo through a set of special continuous countercurrent soaking equipment. For example,Figures 1 to 14 As shown in the figure, the device mainly comprises a soaking tank 1, a lifting mechanism (such as Figure 2 ), a hopper 26 and a disengaging assembly.

[0057] The soaking tank 1 of the present application is provided with a liquid inlet 2, an inner cavity 4 and a liquid outlet 3 in communication. The liquid inlet 2 is connected to a water circulation system, which comprises a clean water tank, a supply pump in communication with the clean water tank, and a liquid inlet pipeline connecting the supply pump and the liquid inlet 2. The liquid outlet 3 is connected to a collection tank through a liquid outlet pipeline. The water circulation system and the collection tank are both prior art.

[0058] The hopper 26 of the present application comprises a hopper body, which is internally provided with an opening and a cavity 27 in communication. A end cap 31 is detachably arranged in the opening. When the end cap 31 is installed, the clamping portion 32 at the bottom of the end cap 31 is tightly attached to the inner wall of the cavity 27. The front and rear sides of the hopper body are provided with through holes 28, which are in communication with the cavity 27. The left and right sides of the hopper body are welded with ear plates 30.

[0059] The lifting mechanism of the present application is installed in the inner cavity 4 of the soaking tank 1, and is used to carry and transport the hopper 26, and to realize the reverse movement of the bamboo chips. The lifting mechanism comprises:

[0060] a rigid outer shell 7, which provides support and protection for the internal components. The bottom of the outer shell 7 is inclined.

[0061] a set of transmission systems, which comprises a driving motor 14, a rotating shaft 8, a chain wheel 13 and a chain 9. The rotating shaft 8 is rotatably connected to the inner side of the outer shell 7, and the chain wheel 13 is fixedly installed on the rotating shaft 8. The chain 9 is engaged with the chain wheel 13 to form a closed-loop transmission path. The driving motor 14 is a waterproof servo motor, which is arranged at the outer shell 7 and fixedly connected with the outer shell 7 through a mounting bracket 15. The driving motor 14 drives one of the rotating shafts 8 to rotate through a gear transmission mode, thereby driving the chain 9 to run.

[0062] a carrying unit, which adopts a limiting plate 10 fixed on the chain 9 by welding. The limiting plate 10 is formed with a limiting portion 11 for supporting the hopper 26. The limiting portion 11 is provided with a plurality of limiting holes 12, and the limiting portion 11 and the limiting plate 10 are integrally formed. A limiting column 29 adapted to the limiting holes 12 is welded on the outer side wall of the hopper 26. When installed, the limiting column 29 of the hopper 26 is inserted into the limiting holes 12 of the limiting plate 10, and an elastic locking member (such as an elastic rubber ring 37) is used for limiting, so that the hopper 26 can be reliably fixed on the limiting plate 10 and move with the chain 9.

[0063] The disengaging assembly of the present application is integrated on the outer shell 7 of the lifting mechanism, and is used to automatically and safely unload the hopper 26 from the moving chain 9 after the soaking process is completed. The disengaging assembly comprises:

[0064] A pushing mechanism (such as Figure 4 ), the pushing mechanism comprises a screw rod transmission assembly and a pushing execution component, the screw rod transmission assembly comprises a screw rod motor 16, a screw rod 17 and a screw rod nut 18, the screw rod motor 16 is fixed to the outside of the shell 7 through a motor base, the screw rod 17 rotates on a support seat 19 on the shell 7 and is connected with the output shaft of the screw rod motor 16, and the screw rod nut 18 forms screw transmission with the screw rod 17. The pushing execution component comprises a cylinder I 21 and a pushing piece 22, the cylinder I 21 is installed on the screw rod nut 18 through a fixing seat 20 and can move transversely together with the screw rod nut 18. One end of the pushing piece 22 is connected with the piston rod of the cylinder I 21, and the other end penetrates through an elongated sliding groove 23 on the side wall of the shell 7 and extends into the inside.

[0065] A receiving mechanism is used to provide support when the hopper 26 is pushed away, which comprises a cylinder II 24 and a support plate 25 fixed to the top end of the piston rod of the cylinder II 24. The cylinder II 24 adopts a waterproof type cylinder, which is installed at the shell 7, and the support plate 25 at the top of the cylinder II 24 is located in the area between the running path of the chain 9 and the liquid inlet 2. The cylinder II 24 can drive the support plate 25 to rise to the height level with the top surface of the limiting plate I 10 to receive the hopper 26.

[0066] In order to facilitate the maintenance of the disengagement assembly, an access hole 6 is arranged at the corresponding position of the side wall of the soaking tank 1, and is sealed by a detachable access plate 34.

[0067] The specific steps of the present application are as follows:

[0068] S1, bamboo material pretreatment, realizing continuous countercurrent soaking and homogenization of bamboo chips:

[0069] (1) Raw material preparation: select mold-free moso bamboo, and cut it into bamboo chips with a length of 10-30 mm and a width of 2-8 mm using a slicing machine, and the bamboo chips with a length of 20 mm and a width of 5 mm are preferred in the present application.

[0070] (2) Equipment installation and feeding:

[0071] The shell 7 of the lifting mechanism is hung and placed into the inner cavity 4 of the soaking tank 1. The shell 7 is reliably fixed in the soaking tank 1 by screwing the bolts 36 between the connecting part II 35 on the top of the shell 7 and the connecting part I 5 inside the soaking tank 1. Sealant is applied at the contact gap between the shell 7 and the soaking tank 1, so that a closed liquid flow channel 33 is formed between the outer wall of the shell 7 and the inner wall of the soaking tank 1, and the liquid inlet 2 and the liquid outlet 3 of the soaking tank 1 are both communicated with the channel.

[0072] The cut bamboo pieces are loaded into the hopper 26, which is provided with through holes 28 of 8mm in diameter on both sides. In order to improve the draining speed of the hopper 26, through holes 28 of 8mm in diameter can also be arranged on the bottom of the hopper 26.

[0073] The driving motor 14 is started to drive the chain 9 to run until the limiting plate one 10 moves to a position convenient for feeding. The hopper 26 containing bamboo pieces is placed on the limiting plate one 10, and the limiting column 29 outside the hopper 26 is inserted through the limiting hole one 12 on the limiting plate one 10, so that the hopper 26 is tightly pressed against the limiting part one 11 of the limiting plate one 10. Finally, a rubber ring 37 with elasticity is sleeved on the limiting column 29 and is pressed tightly on the limiting part one 11, so that the hopper 26 is firmly limited on the limiting plate one 10, and at this time the hopper 26 is in the liquid flow channel 33.

[0074] (3) Continuous countercurrent soaking:

[0075] Normal temperature water (about 25℃) is introduced from the liquid inlet 2, and the water flow stably flows in the direction A in the liquid flow channel 33 and is finally discharged from the liquid outlet 3. The normal temperature water is continuously introduced, so that the bamboo pieces in the hopper 26 are all immersed in the water.

[0076] The driving motor 14 is started to drive the chain 9 to run at a slow speed, so that the limiting plate one 10 carrying the hopper 26 moves in the direction B opposite to the flowing direction of the water flow. By controlling the rotating speed of the driving motor 14, the soaking time of the bamboo pieces in the soaking tank 1 is controlled to be 30-60 minutes, and preferably 50 minutes. In this process, the bamboo pieces are in countercurrent contact with the water flow, so that efficient and uniform swelling and softening are realized.

[0077] (4) Discharging and rinsing:

[0078] When the limiting plate one 10 carrying the hopper 26 moves to the set discharging position, the disengaging assembly starts to work:

[0079] a. The cylinder one 21 is started to drive the pushing piece 22 to move to the direction of the center line of the outer shell 7, so that it is aligned with the lug 30 outside the hopper 26.

[0080] b. The cylinder two 24 is started to drive the support plate 25 to rise, so that the top surface of the support plate 25 is flush with the top surface of the current limiting plate one 10.

[0081] c. The lead screw motor 16 is started to drive the lead screw nut 18 to drive the fixed seat 20 and the pushing piece 22 to move to the direction of the liquid inlet 2. The pushing piece 22 abuts against the lug 30 of the hopper 26 and applies a pushing force, so that the hopper 26 smoothly slides from the limiting plate one 10 to the support plate 25. In this process, the limiting column 29 is disengaged from the limiting hole one 12, and the rubber ring 37 falls off.

[0082] A limiting plate 38 is placed on the top of the shell 7, and the protrusion 40 on the bottom of the limiting plate 38 is embedded into the limiting groove 39 of the connecting part 35 to be fixed. Then the hopper 26 is placed on the limiting plate 38 from the supporting plate 25, and the limiting column 29 of the hopper 26 is passed through the limiting hole 42 of the limiting plate 38 and is abutted against the limiting part 41.

[0083] The end cover 31 is removed from the hopper 26, the hopper 26 is opened, and the bamboo pieces are washed briefly by spraying clean water into the hopper 26 by using a high-pressure water pipe. After washing, the bamboo pieces are naturally drained in the hopper 26. At this time, the moisture content of the bamboo pieces is uniform and is about 55%.

[0084] S2, drying treatment:

[0085] The hopper 26 is removed from the limiting plate 38, and the drained bamboo pieces are taken out from the hopper 26 and are uniformly laid on the belt dryer. The drying is carried out under the condition of hot air at 105 DEG C until the moisture content of the bamboo pieces is reduced to below 8%.

[0086] S3, coarse crushing:

[0087] The dried bamboo pieces are sent into the hammer mill for coarse crushing. The parameters of the mill are adjusted to obtain the coarse particle bamboo powder with the particle size mainly distributed in 1-5 mm.

[0088] S4, ultrafine crushing:

[0089] The coarse particle bamboo powder is sent into the mechanical impact type ultrafine crusher through the conveying system to realize the ultrafine crushing.

[0090] S5, classification treatment:

[0091] The material after the ultrafine crushing is brought into the turbine classifier matched with the material by the airflow, the rotating speed of the turbine classifier is adjusted to 2800 rpm to generate an accurate centrifugal field, and the 1200-mesh bamboo powder is obtained.

[0092] The energy consumption of the present application is as follows:

[0093]

[0094] From the data in the above table, it can be seen that the comprehensive energy consumption is reduced by 38% by using the process of the present application.

[0095] The 1200-mesh bamboo powder obtained in the present embodiment is detected.

[0096] 1, particle size distribution (D90 / D10≤4.2)

[0097] Detection method and standard:

[0098] Detection instrument: Laser particle size analyzer (Malvern Mastersizer 3000) is used.

[0099] Detection standard: Refer to international standard ISO 13320:2020 "Particle size analysis-Laser diffraction method".

[0100] Specific operation: Take a small amount of bamboo powder sample, disperse it in ethanol dispersant by ultrasonic wave, and then measure it. The instrument software will automatically calculate the cumulative distribution percentage such as D10, D50 and D90.

[0101] Data significance:

[0102] D90 / D10 is called "span", which is the core index for measuring the width of particle size distribution. The smaller the span is, the narrower the distribution is, which means that the particle size is more uniform.

[0103] The span of the bamboo powder produced by the process of the present application is ≤4.2, which is much lower than the ≥6.0 of the traditional process, which proves that the product of the present application has excellent particle size uniformity.

[0104] 2. Whiteness (≥85)

[0105] Detection method and standard:

[0106] Detection instrument: Whiteness meter or color difference meter (HunterLab, ColorQuest XE) is used.

[0107] Detection standard: Refer to ISO 2470 "Determination of blue light diffuse reflectance factor (ISO whiteness) of paper, paperboard and pulp" or GB / T 5950 "Whiteness measurement method of building materials and non-metallic mineral products".

[0108] Specific operation: The bamboo powder is pressed into a flat sample, and the whiteness value (W) is measured on the instrument.

[0109] Data significance:

[0110] The whiteness of the bamboo powder produced by the traditional process is usually between 70 and 80 due to uneven pretreatment and overheating during crushing, and it is unstable between batches. The whiteness of the product of the present application is stable above 85, and the color is better, which meets the high requirements of high-end coatings and cosmetic fillers on appearance.

[0111] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the same technical problem and achieve the same technical effect is covered by the protection scope of the present application.

Claims

1. A bamboo powder manufacturing process characterized by, Specifically comprising the following steps: S1, bamboo pretreatment: (1) cut the bamboo into bamboo pieces; (2) put the bamboo pieces into the hopper with through holes, then install the hopper in the inner cavity of the soaking tank, then pass water into the liquid inlet of the soaking tank, and the water flows out from the liquid outlet, so that the water flows in the inner cavity of the soaking tank, the flowing direction of the water is direction A, and the bamboo pieces in the hopper are soaked in the water; (3) control the movement of the hopper in the soaking tank, control the movement direction of the hopper as direction B, and the direction B is opposite to the direction A, so that the bamboo pieces in the hopper are in contact with the water flowing in the opposite direction, and the bamboo pieces are soaked in the soaking tank; (4) take the hopper out of the soaking tank and place it on the soaking tank, then wash the bamboo pieces in the hopper and naturally drain; S2, drying treatment: take out the drained bamboo pieces in the hopper and dry them to reduce the moisture content to below 10%; S3, coarse crushing: send the dried bamboo pieces into the crusher to preliminarily crush them into coarse particle bamboo powder; S4, ultrafine grinding: send the coarse particle bamboo powder into the ultrafine grinder for ultrafine grinding treatment; S5, classification treatment: take the ultrafine ground material into the turbine classifier, and control the fineness of the finished bamboo powder by adjusting the rotating speed of the turbine classifier.

2. The process for manufacturing bamboo powder as claimed in claim 1 wherein: The lifting mechanism is used to transport the soaking tank; The lifting mechanism comprises an outer shell, a driving motor, a chain and a limiting plate one, the outer shell is rotationally connected with a rotating shaft, a sprocket is fixed on the rotating shaft, the chain is connected on the sprocket, the driving motor is fixed on the outer shell and drives the rotating shaft to rotate, the limiting plate one is fixed on the chain, the limiting plate one is provided with a limiting hole one, and the outer side of the hopper is fixed with a limiting column; the soaking tank transportation step is: 1) install the outer shell of the lifting mechanism in the inner cavity of the soaking tank, and set sealing glue at the contact part of the outer shell and the soaking tank, so as to form a liquid flow channel between the outer shell and the soaking tank, and the liquid inlet and the liquid outlet are communicated with the liquid flow channel; 2) put the bamboo pieces into the hopper with through holes, then place the hopper on the limiting plate one, and at the same time, pass the limiting column of the hopper through the limiting hole one of the limiting plate one, and make the hopper lean against the limiting part one of the limiting plate one, then sleeve the elastic rubber ring on the limiting column, and limit the rubber ring on the limiting part one, so that the hopper is limited on the limiting plate one and in the liquid flow channel; 3) pass water into the liquid inlet of the soaking tank, and the water flows in the liquid flow channel, and the water flows out from the liquid outlet, at this time, start the driving motor, the driving motor drives the chain to run, and the limiting plate one moves along direction B with the hopper.

3. The process for manufacturing bamboo powder as claimed in claim 2 wherein: The hopper is separated from the soaking tank by a separation assembly, which comprises a lead screw motor, a lead screw nut, a lead screw, a cylinder one and a pushing piece. The lead screw motor is fixed outside the shell, which is fixed with a support seat. The lead screw motor drives the lead screw to rotate on the support seat. The lead screw nut is connected to the lead screw and moves linearly on the lead screw. The lead screw nut is fixed with a fixed seat, and the cylinder one is fixed on the fixed seat. The shell is provided with a sliding groove, and the pushing piece passes through the sliding groove and is installed on the cylinder one. The bottom of the shell is provided with a cylinder two, which is provided with a support plate arranged in the area between the chain and the liquid inlet. The step of separating the hopper from the soaking tank is specifically as follows: (1) When the limiting plate one moves to the set position, the cylinder one is opened, and the pushing piece is controlled to move to the center line direction of the shell. (2) The cylinder two is opened, and the support plate is driven to rise to the set height, so that the top surface of the support plate is flush with the top surface of the limiting plate one. (3) The lead screw motor is opened, and the lead screw nut is controlled to move to the liquid inlet direction on the lead screw. At this time, the pushing piece also moves to the liquid inlet direction, contacts the ear plate outside the hopper, and applies a force to the ear plate, so that the hopper moves from the limiting plate one to the support plate. At this time, the limiting column of the hopper is separated from the limiting hole one of the limiting plate one, and the rubber ring on the limiting column falls to the bottom of the shell. When the hopper is separated from the limiting plate one and arranged on the support plate, the lead screw motor is stopped, and the separation of the hopper is realized.

4. The process for manufacturing bamboo powder as claimed in claim 3 wherein: The soaking tank is provided with an access hole, and the access hole and the separation assembly are correspondingly arranged. The access hole is detachably provided with an access plate.

5. The process for manufacturing bamboo powder as claimed in claim 2 wherein: When the hopper is separated, the limiting plate two is placed on the top of the shell, the protrusion at the bottom of the limiting plate two is embedded in the limiting groove of the shell, and the limiting plate two is limited at the top of the shell. Then, the hopper is placed on the limiting plate two, the limiting column of the hopper passes through the limiting hole two of the limiting plate two, the hopper leans on the limiting part two of the limiting plate two, the hopper is opened, and the water pipe is used to spray clean water into the hopper to flush the bamboo chips in the hopper.

6. The process for manufacturing bamboo powder as claimed in claim 2 wherein: The inside of the soaking tank is provided with a connecting part one, and the top of the shell is provided with a connecting part two. When the shell of the lifting mechanism is placed in the inner cavity of the soaking tank, the bolt is screwed between the connecting part two and the connecting part one.

7. The process of claim 1, wherein: In step S1, the length of the bamboo chip is 10-30 mm, and the width is 2-8 mm.

8. The process of claim 1, wherein: In step S1, the bamboo chip is soaked in the soaking tank for 30-60 minutes.

9. The process of claim 1, wherein: In step S3, the particle size of the coarse particle bamboo powder is 1-5 mm.

10. The process of claim 1, wherein: In step S5, the fineness of the finished bamboo powder reaches 1200 meshes.

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