A bamboo screening machine

Abstract

This utility model discloses a bamboo sorting machine, including a first support, a first drive unit, a second support, a third support, a sorting assembly, and a control unit. The sorting assembly includes a drum, a sorting roller, a third sliding member, and a fourth sliding member. The third and fourth sliding members are sleeved on the outer side of the drum and are connected to the first drive unit. The third sliding member cooperates with the first sliding member on the second support, and the fourth sliding member cooperates with the second sliding member on the third support. Multiple sorting rollers are spaced apart circumferentially along the inner side of the drum, dividing the internal storage cavity into a coaxial feeding cavity and an annular discharge cavity. The spacing between adjacent sorting rollers is adapted to the preset bamboo diameter. An inlet is provided at the end of the drum, and an outlet is provided on the side wall, connecting the two cavities respectively. The control unit is electrically connected to the drive unit. This device automatically sorts bamboo by diameter through the cooperation of the drum and the sorting roller, effectively improving sorting accuracy and efficiency while reducing bamboo damage.

Description

Technical Field

[0001] This utility model relates to the field of automated bamboo processing technology, and in particular to a bamboo screening machine. Background Technology

[0002] Bamboo screening is a crucial step in bamboo processing, primarily used to grade bamboo by diameter to meet the dimensional consistency requirements of different applications. Traditional screening methods mainly rely on manual sorting or simple mechanical sieves, which suffer from low sorting accuracy, easy damage to the bamboo surface, poor adaptability, and low efficiency. Manual sorting is greatly affected by the operator's experience, resulting in unstable pass rates; simple vibrating screens can only perform single-dimensional sorting, and bamboo easily clogs the screen, requiring frequent cleaning and affecting continuous operation. In addition, while wet sorting methods such as water separation have a certain sorting effect, they consume a lot of water, easily generate wastewater pollution, and may lead to excessively high moisture content in the bamboo, increasing subsequent drying energy consumption and the risk of cracking. Existing technologies struggle to effectively reduce collision damage between bamboo while ensuring sorting accuracy, and cannot meet the needs of efficient and flexible sorting of bamboo of different diameters, thus restricting the high-value utilization of bamboo resources. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to propose a bamboo screening machine, which forms an adjustable-spacing screening structure by means of screening rollers with circumferentially spaced screening rollers inside the drum, so as to achieve accurate grading of bamboo by diameter and reduce collision damage, thus solving the problems of low screening accuracy and easy damage to bamboo in traditional screening.

[0004] To achieve the aforementioned technical objectives, the technical solution adopted by this utility model is as follows: a bamboo screening machine, comprising: a first support, a first drive unit, a second support, a third support, a screening assembly, and a control unit. The first drive unit is disposed on the first support; a first sliding member is provided on the second support; the third support is disposed opposite to the second support, and a second sliding member is provided on the third support; the screening assembly includes a roller, a screening roller, a third sliding member, and a fourth sliding member, with the third and fourth sliding members sleeved on the outer side of the roller; the roller is connected to the first drive unit via a transmission connection, and the third sliding member is connected to the first sliding member via a transmission connection. The components are matched, the fourth sliding component matches the second sliding component, and there are multiple screening rollers. The multiple screening rollers are distributed circumferentially along the inner side of the drum. The drum has a storage cavity. The multiple screening rollers divide the storage cavity to form a coaxially arranged feeding cavity and a discharging cavity. The discharging cavity is annular. The distance between two adjacent screening rollers is adapted to the preset bamboo diameter. The end of the drum has a feeding port that communicates with the feeding cavity. The side wall of the drum has a discharging port that communicates with the discharging cavity. The feeding cavity is used to fill the bamboo to be screened, and the discharging cavity is used to fill the screened bamboo. The control unit is electrically connected to the first drive unit.

[0005] In some embodiments, the first and second sliders are configured as grooves; the third and fourth sliders are configured as ridges; or, the first and second sliders are configured as ridges; the third and fourth sliders are configured as grooves; or, the first and second sliders are configured as slide rails; the third and fourth sliders are configured as sliders or rollers; or, the first and second sliders are configured as sliders or rollers; the third and fourth sliders are configured as slide rails.

[0006] In some embodiments, a drive shaft is provided at one end of the roller connected to the first drive unit. The bamboo screening machine also includes a transmission assembly, which includes a first drive wheel, a second drive wheel, an elastic coupling, and a transmission belt. The first drive wheel is sleeved on the output end of the first drive unit and is connected to the output end of the first drive unit via the elastic coupling. The second drive wheel is sleeved on the drive shaft, and the transmission belt is sleeved on the outside of the first drive wheel and the second drive wheel.

[0007] In some embodiments, the bamboo screening machine further includes: a plurality of rollers, a plurality of first bearings and a plurality of second bearings, the plurality of rollers being distributed at intervals along the circumference of the drum, and a screening roller being fitted on the outside of each roller; the plurality of first bearings being disposed at one end of the drum, and one end of the roller being rotatably connected to one end of the drum through the first bearings; the plurality of second bearings being disposed at the other end of the drum, and the other end of the roller being rotatably connected to the other end of the drum through the second bearings.

[0008] In some embodiments, the bamboo screening machine further includes: a first cover plate and a second cover plate, the first cover plate being disposed at the feed inlet, the first cover plate being hinged to the roller, and the first cover plate being airtightly connected to the feed inlet; the second cover plate being disposed at the discharge outlet, the second cover plate being hinged to the roller, and the second cover plate being airtightly connected to the discharge outlet.

[0009] In some embodiments, the first support includes a first receiving plate and a plurality of first receiving brackets, the plurality of first receiving brackets being circumferentially distributed along the lower surface of the first receiving plate, and a first driving unit being provided above the first receiving plate; the second support includes a second receiving plate and a plurality of second receiving brackets, the plurality of second receiving brackets being circumferentially distributed along the lower surface of the second receiving plate, and a first sliding member being provided above the second receiving plate; the third support includes a third receiving plate and a plurality of third receiving brackets, the plurality of third receiving brackets being circumferentially distributed along the lower surface of the third receiving plate, and a second sliding member being provided above the third receiving plate.

[0010] In some embodiments, the first, second, and third receiving brackets are configured as profiles; or, the first, second, and third receiving brackets are configured as steel pipes; or, the first, second, and third receiving brackets are configured as angle steel.

[0011] In some embodiments, the second support further includes a plurality of first crossbeams disposed between two adjacent second support brackets; the third support further includes a plurality of second crossbeams disposed between two adjacent third support brackets.

[0012] In some embodiments, the outer surface of the screening roller is coated with a wear-resistant layer; or, the outer surface of the screening roller is coated with a buffer layer.

[0013] In some embodiments, the roller is configured to be made of carbon steel; the first drive unit is configured to be a B5 type electromagnetic brake three-phase asynchronous motor; and the control unit is configured to be a PLC controller.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention provides a bamboo screening machine, including a first support, a first drive unit, a second support, a third support, a screening assembly, and a control unit. The screening assembly includes a drum, a screening roller, a third sliding member, and a fourth sliding member; the third and fourth sliding members are sleeved on the outer side of the drum and are connected to the first drive unit for transmission; the third sliding member cooperates with the first sliding member on the second support, and the fourth sliding member cooperates with the second sliding member on the third support; multiple screening rollers are distributed circumferentially along the inner side of the drum at intervals, dividing the internal storage cavity into a coaxial feeding cavity and an annular discharge cavity; the spacing between adjacent screening rollers is adapted to the preset bamboo diameter; the drum end is provided with a feeding port, and the side wall is provided with a discharge port, which respectively connects the two cavities; the control unit is electrically connected to the drive unit. This device achieves automatic sorting of bamboo by diameter through the cooperation of the drum and the screening roller, which can effectively improve the sorting accuracy and efficiency and reduce bamboo damage. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first structural schematic diagram of the bamboo screening machine described in the specific embodiment;

[0017] Figure 2 This is a schematic diagram of the second structure of the bamboo screening machine described in the specific embodiment;

[0018] Figure 3 This is a schematic diagram of the third structure of the bamboo screening machine described in the specific implementation method;

[0019] Figure 4This is a side view of the bamboo screening machine described in the specific implementation method;

[0020] Figure 5 This is a bottom view of the bamboo screening machine described in the specific implementation method;

[0021] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure at point AA is shown.

[0022] The reference numerals for the above figures are as follows:

[0023] 1. First support;

[0024] 11. First drive unit;

[0025] 12. First receiving plate;

[0026] 13. First receiving bracket;

[0027] 2. Second support;

[0028] 21. First sliding member;

[0029] 22. Second receiving plate;

[0030] 23. Second receiving bracket;

[0031] 24. First crossbeam;

[0032] 3. The third support;

[0033] 31. Second sliding member;

[0034] 32. Third receiving plate;

[0035] 33. Third supporting bracket;

[0036] 34. Second crossbeam;

[0037] 4. Filtering components;

[0038] 41. Roller;

[0039] 411. Roller;

[0040] 412. First bearing;

[0041] 413. Second bearing;

[0042] 414. First cover plate;

[0043] 415. Second cover plate;

[0044] 416. Feed chamber;

[0045] 417. Discharge chamber;

[0046] 42. Screening roller;

[0047] 43. Third sliding component;

[0048] 44. Fourth sliding component;

[0049] 5. Transmission components;

[0050] 51. First transmission wheel;

[0051] 52. Second transmission wheel;

[0052] 53. Drive belt. Detailed Implementation

[0053] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0054] Please see Figures 1 to 6 This embodiment provides a bamboo screening machine, including: a first support 1, a first drive unit 11, a second support 2, a third support 3, a screening assembly 4, and a control unit. The first drive unit 11 is disposed on the first support 1; a first sliding member 21 is provided on the second support 2; the third support 3 is disposed opposite to the second support 2, and a second sliding member 31 is provided on the third support 3; the screening assembly 4 includes a roller 41, a screening roller 42, a third sliding member 43, and a fourth sliding member 44. The third sliding member 43 and the fourth sliding member 44 are sleeved on the outer side of the roller 41. The roller 41 is connected to the first drive unit 11 in a transmission manner. The third sliding member 43 cooperates with the first sliding member 21, and the fourth sliding member 44... In conjunction with the second sliding member 31, there are multiple screening rollers 42. The multiple screening rollers 42 are distributed circumferentially along the inner side of the drum 41. The drum 41 has a storage cavity. The multiple screening rollers 42 divide the storage cavity to form a coaxially arranged feeding cavity 416 and a discharging cavity 417. The discharging cavity 417 is annular. The spacing between two adjacent screening rollers 42 is adapted to the preset bamboo diameter. The end of the drum 41 is provided with a feeding port, which is connected to the feeding cavity 416. The side wall of the drum 41 is provided with a discharging port, which is connected to the discharging cavity 417. The feeding cavity 416 is used to fill the bamboo to be screened, and the discharging cavity 417 is used to fill the screened bamboo. The control unit is electrically connected to the first drive unit 11.

[0055] In this embodiment, the first support 1 provides stable support, and the first drive unit 11 is mounted on it to provide rotational power. The second support 2 and the third support 3 are arranged opposite to each other and are respectively provided with a first sliding member 21 and a second sliding member 31 to guide and restrict the axial movement of the roller 41. In the screening assembly 4, the third sliding member 43 and the fourth sliding member 44 sleeved on the outside of the roller 41 cooperate with the first sliding member 21 and the second sliding member 31 to achieve axial positioning of the roller 41 during rotation. The storage cavity inside the roller 41 is divided into a coaxial feeding cavity 416 and a discharging cavity 417 by multiple circumferentially spaced screening rollers 42, wherein the discharging cavity 417 has an annular structure. The spacing between adjacent screening rollers 42 is set according to the target diameter of the bamboo to be screened to achieve diameter-based sorting. The feeding port at the end of the roller 41 is connected to the feeding cavity 416 for feeding the bamboo to be screened; the discharging port on the side wall is connected to the discharging cavity 417 for discharging the screened bamboo. The control unit is electrically connected to the first drive unit 11 and is used to regulate the start, stop, and rotation speed of the roller 41. Preferably, the outer surface of the screening roller 42 may be coated with a wear-resistant layer or a buffer layer to reduce impact damage to the bamboo and extend the life of the components.

[0056] This device drives the drum 41 to rotate via the first drive unit 11. Bamboo tumbles within the feeding chamber 416 with the drum 41. Bamboo smaller than the spacing of the screening rollers 42 falls through the gap into the annular discharge chamber 417 and is discharged through the discharge port, achieving automatic sorting by diameter. The cooperative structure of the first sliding member 21, the second sliding member 31, the third sliding member 43, and the fourth sliding member 44 ensures the rotational stability of the drum 41. The control unit precisely adjusts the rotational speed to adapt to the characteristics of different bamboo materials. This embodiment effectively improves sorting accuracy and efficiency, avoids the subjective errors of traditional manual sorting and the pollution problems of water sorting, and reduces bamboo collision damage through buffer design, ensuring the integrity and quality consistency of the bamboo. It is suitable for clean and efficient sorting of ecological bamboo.

[0057] In some embodiments, the first slider 21 and the second slider 31 are configured as grooves; the third slider 43 and the fourth slider 44 are configured as ridges; or, the first slider 21 and the second slider 31 are configured as ridges; the third slider 43 and the fourth slider 44 are configured as grooves; or, the first slider 21 and the second slider 31 are configured as slide rails; the third slider 43 and the fourth slider 44 are configured as sliders or rollers; or, the first slider 21 and the second slider 31 are configured as sliders or rollers; the third slider 43 and the fourth slider 44 are configured as slide rails.

[0058] In this embodiment, the first sliding member 21 and the second sliding member 31 refer to guide structures respectively disposed on the second support 2 and the third support 3, used to form a cooperative relationship with the third sliding member 43 and the fourth sliding member 44 on the outer side of the roller 41, thereby limiting the axial displacement of the roller 41 during rotation and ensuring its stable rotation. The cooperation between the groove and the convex strip achieves sliding guidance through a concave-convex interlocking structure, wherein the groove is used to accommodate the convex strip and guide its movement; the cooperation between the slide rail and the slider or roller achieves low-friction movement through a combination of linear track and sliding or rolling elements. Preferably, the sliding member can be made of wear-resistant material to extend its service life, or a lubrication structure can be provided to reduce running resistance. These sliding cooperation methods are all used to ensure that the roller 41 maintains axial stability when rotating at high speed, and to avoid affecting the screening accuracy due to vibration or sway.

[0059] This embodiment utilizes various sliding component configurations to ensure the stable operation of the drum 41 along a predetermined trajectory during rotation. The interlocking structure of grooves and convex strips, or the combination of slide rails and slider rollers, effectively limits the axial movement of the drum 41, reducing equipment vibration and wear. This ensures the bamboo material tumbles evenly within the drum 41 and makes full contact with the screening roller 42, improving the continuity and reliability of the sorting operation. The flexible sliding component configuration provides adaptability for different working conditions, enhancing the equipment's applicability and ease of maintenance, and providing a stable structural foundation for efficient bamboo sorting.

[0060] In some embodiments, the end of the roller 41 connected to the first drive unit 11 is provided with a drive shaft. The bamboo screening machine also includes a transmission assembly 5, which includes a first transmission wheel 51, a second transmission wheel 52, an elastic coupling, and a transmission belt 53. The first transmission wheel 51 is sleeved on the output end of the first drive unit 11 and is connected to the output end of the first drive unit 11 via the elastic coupling. The second transmission wheel 52 is sleeved on the drive shaft, and the transmission belt 53 is sleeved on the outside of the first transmission wheel 51 and the second transmission wheel 52.

[0061] In this embodiment, the drive shaft refers to the rotating shaft located at the connection end between the roller 41 and the first drive unit 11, used to transmit power and drive the roller 41 to rotate. The first drive wheel 51 is sleeved on the output end of the first drive unit 11, used to receive the rotational power output by the motor. The second drive wheel 52 is sleeved on the drive shaft, used to transmit power to the roller 41. A flexible coupling connects the output end of the first drive unit 11 and the first drive wheel 51, used to compensate for installation errors and absorb vibration and shock. The drive belt 53 is sleeved on the outside of the first drive wheel 51 and the second drive wheel 52, achieving power transmission through friction. Preferably, the drive belt 53 can be a V-belt to enhance transmission efficiency and stability, and the flexible coupling can be made of rubber to improve buffering performance. This transmission combination can effectively ensure smooth power transmission and reduce vibration and noise during equipment operation.

[0062] This embodiment achieves efficient power transmission between the first drive unit 11 and the drum 41 through the transmission assembly 5. The flexible coupling effectively absorbs the vibration and impact generated during motor startup and operation, avoiding component damage that may be caused by rigid connections. The transmission belt 53, while transmitting power, also has a buffering and vibration-absorbing effect, further ensuring the smooth rotation of the drum 41. This transmission method not only ensures that the bamboo material obtains uniform and continuous tumbling motion within the drum 41, improving the stability of the screening operation, but also reduces equipment maintenance requirements and extends the service life of key components through flexible connections.

[0063] In some embodiments, the bamboo screening machine further includes: a plurality of rollers 411, a plurality of first bearings 412 and a plurality of second bearings 413. The plurality of rollers 411 are distributed at intervals along the circumference of the drum 41, and a screening roller 42 is sleeved on the outside of each roller 411. The plurality of first bearings 412 are disposed at one end of the drum 41, and one end of the roller 411 is rotatably connected to one end of the drum 41 through the first bearings 412. The plurality of second bearings 413 are disposed at the other end of the drum 41, and the other end of the roller 411 is rotatably connected to the other end of the drum 41 through the second bearings 413.

[0064] In this embodiment, rollers 411 refer to cylindrical rotating components spaced apart circumferentially along the drum 41, used to support the screening rollers 42 and transmit rotational motion. Each roller 411 is fitted with a screening roller 42, forming an independently rotatable screening unit. A first bearing 412 and a second bearing 413 are respectively disposed at both ends of the drum 41, used to support the rollers 411 and reduce rotational friction. Preferably, the bearings can adopt a rolling bearing structure to improve load-bearing capacity and rotational efficiency, and the surface of the rollers 411 can be rust-proofed to extend their service life. This arrangement allows each screening roller 42 to rotate independently relative to the drum 41, generating rolling friction rather than sliding friction when the bamboo comes into contact with the screening roller 42, significantly reducing wear on the bamboo surface.

[0065] This embodiment achieves independent rotation of the screening roller 42 through the cooperation structure of the roller 411 and the bearing. When the bamboo tumbles inside the roller 41, the moment it contacts the screening roller 42, it drives the screening roller 42 to rotate around the roller 411, converting the original sliding friction into rolling friction. This rotation method not only effectively reduces the coefficient of friction between the bamboo and the screening components, reducing scratches and wear on the bamboo surface, but also disperses the impact force through rolling contact. At the same time, the independently rotating screening roller 42 is more conducive to the uniform distribution of bamboo and smooth passage through the screening gap, improving the sorting accuracy and the stability of equipment operation, and providing an important guarantee for the integrity of the bamboo and the sorting quality.

[0066] In some embodiments, the bamboo screening machine further includes: a first cover plate 414 and a second cover plate 415. The first cover plate 414 is disposed at the feed inlet, is hinged to the roller 41, and is airtightly connected to the feed inlet. The second cover plate 415 is disposed at the discharge outlet, is hinged to the roller 41, and is airtightly connected to the discharge outlet.

[0067] In this embodiment, the first cover plate 414 and the second cover plate 415 refer to openable and closable sealing components respectively installed at the feed inlet and the discharge outlet. A hinge structure enables the first cover plate 414 and the second cover plate 415 to rotate and open or close around the hinge axis, allowing them to be rotated around the hinge axis to prevent dust from escaping. When closed, the first cover plate 414 and the second cover plate 415 form an airtight connection with the feed inlet or discharge outlet, preventing dust from escaping. Preferably, the first cover plate 414 and the second cover plate 415 can be made of lightweight metal materials to reduce operational intensity, and elastic sealing strips can be provided on the sealing contact surfaces to enhance the airtight effect, ensuring both the convenience of feeding and discharging operations and the airtightness of the equipment during operation.

[0068] This embodiment achieves effective sealing of the inlet and outlet through a hinged cover structure. When the equipment is running, the closed first cover 414 and second cover 415 form an airtight fit with the ports, effectively preventing the bamboo chips and dust generated during the screening process from spreading outward. The hinged design allows operators to easily open the covers for feeding or cleaning operations, and quickly restores the seal after closing. This not only significantly reduces the dust concentration in the working environment, ensuring the health and safety of operators, but also avoids resource waste caused by material spillage. At the same time, it maintains a stable airflow environment inside the drum 41, providing the necessary sealing conditions for efficient bamboo sorting.

[0069] In some embodiments, the first support 1 includes a first receiving plate 12 and a plurality of first receiving brackets 13, the plurality of first receiving brackets 13 being distributed circumferentially along the lower surface of the first receiving plate 12, and a first driving unit 11 being provided above the first receiving plate 12; the second support 2 includes a second receiving plate 22 and a plurality of second receiving brackets 23, the plurality of second receiving brackets 23 being distributed circumferentially along the lower surface of the second receiving plate 22, and a first sliding member 21 being provided above the second receiving plate 22; the third support 3 includes a third receiving plate 32 and a plurality of third receiving brackets 33, the plurality of third receiving brackets 33 being distributed circumferentially along the lower surface of the third receiving plate 32, and a second sliding member 31 being provided above the third receiving plate 32.

[0070] In this embodiment, the first support 1, the second support 2, and the third support 3 refer to three independent support structures used to support the main body of the equipment; the first receiving plate 12, the second receiving plate 22, and the third receiving plate 32 refer to the bearing platforms on the top of each support, used to install related functional components; the first receiving bracket 13, the second receiving bracket 23, and the third receiving bracket 33 refer to the support legs distributed circumferentially along the lower surface of each receiving plate, used to provide stable ground support.

[0071] The first drive unit 11 is mounted above the first receiving plate 12 to provide rotational power. The first sliding member 21 and the second sliding member 31 are respectively disposed above the second receiving plate 22 and the third receiving plate 32 to realize the adjustment function of the equipment. Preferably, the first receiving bracket 13, the second receiving bracket 23 and the third receiving bracket 33 can adopt a triangular support structure to enhance stability.

[0072] This embodiment achieves stable support and functional zoning of the main body of the equipment through three independent support structures. The first support 1 is specifically designed to support the power system, while the second support 2 and the third support 3 are each equipped with sliding components, forming a stable support system. This ensures the overall stability of the equipment during operation and provides necessary adjustment functions through the sliding components. The circumferential distribution of the first support bracket 13, the second support bracket 23, and the third support bracket 33 effectively disperses the weight of the equipment, reduces local stress concentration, and reserves installation space for future functional expansion. The first support 1, the second support 2, and the third support 3 in this embodiment not only improve the installation adaptability of the equipment but also facilitate the disassembly and replacement of components during maintenance, providing a reliable support foundation for the long-term stable operation of the equipment.

[0073] In some embodiments, the first receiving bracket 13, the second receiving bracket 23, and the third receiving bracket 33 are configured as profiles; or, the first receiving bracket 13, the second receiving bracket 23, and the third receiving bracket 33 are configured as steel pipes; or, the first receiving bracket 13, the second receiving bracket 23, and the third receiving bracket 33 are configured as angle steel.

[0074] In this embodiment, the profile is a metal material with a specific cross-sectional shape manufactured through processes such as extrusion and rolling, used to provide structural support; the steel pipe refers to a hollow tubular metal material with high bending strength; and the angle steel refers to an L-shaped profile with good torsional resistance. All three materials can be used as manufacturing materials for the support bracket to support the main structure of the equipment. Preferably, the profile can be made of aluminum alloy to reduce overall weight, the steel pipe can be galvanized to enhance rust resistance, and the angle steel can have reinforcing ribs added at the connection points to improve stability.

[0075] This embodiment provides a variety of standardized material options, allowing the support frame to flexibly select the most suitable material based on different load-bearing requirements and environmental conditions. Profiles facilitate quick assembly and adjustment, steel pipes offer a good strength-to-weight ratio, and angle steel excels in torsional resistance. This material selection approach ensures the reliability of the support structure, provides greater adaptability to different operating conditions, and simultaneously reduces production costs and maintenance complexity.

[0076] In some embodiments, the second support 2 further includes a plurality of first crossbeams 24, which are disposed between two adjacent second support brackets 23; the third support 3 further includes a plurality of second crossbeams 34, which are disposed between two adjacent third support brackets 33.

[0077] In this embodiment, the first crossbeam 24 and the second crossbeam 34 refer to horizontal connecting members respectively installed on the second support 2 and the third support 3, used to connect adjacent support brackets to form a stable frame structure. This connection method can effectively enhance the lateral stability of the support and prevent the bracket from deforming or displacing under stress. Preferably, the first crossbeam 24 and the second crossbeam 34 can be made of the same profile or steel pipe material as the first support bracket 13, the second support bracket 23 and the third support bracket 33, and can be reliably fixed by welding or bolting.

[0078] This embodiment significantly enhances the overall rigidity and stability of the supports by setting a crossbeam connection structure between adjacent supports of the second support 2 and the third support 3. The first crossbeam 24 and the second crossbeam 34 connect the originally independent second support support 23 and third support support 33 into an integral frame, effectively dispersing the vibration and lateral load generated during equipment operation, preventing relative displacement between the second support support 23 and the third support support 33, ensuring the smooth operation of the equipment, extending the service life of the second support 2 and the third support 3, and providing a more stable support foundation for the upper first sliding member 21, second sliding member 31, third sliding member 43 and fourth sliding member 44.

[0079] In some embodiments, the outer surface of the screening roller 42 is coated with a wear-resistant layer; or, the outer surface of the screening roller 42 is coated with a buffer layer.

[0080] In this embodiment, the wear-resistant layer refers to a hardened coating applied to the surface of the screening roller 42 to resist frictional wear on the bamboo; the buffer layer refers to a surface coating with elastic properties to mitigate the impact of collisions on the bamboo. Preferably, the wear-resistant layer can be made of tungsten carbide-based composite material, and the buffer layer can be made of polyurethane elastomer material.

[0081] In this embodiment, a functional coating is applied to the surface of the screening roller 42. The wear-resistant layer significantly extends the service life of the equipment, while the buffer layer effectively reduces impact damage to the bamboo. Both coatings can be selected according to actual needs, ensuring both the continuity of the screening process and the integrity of the bamboo, achieving a dual optimization of efficiency and protection.

[0082] In some embodiments, the roller 41 is configured to be made of carbon steel; the first drive unit 11 is configured to be a B5 type electromagnetic brake three-phase asynchronous motor; and the control unit is configured to be a PLC controller.

[0083] In this embodiment, carbon steel refers to an iron-carbon alloy with a carbon content between 0.12% and 2%, used to manufacture the main structure of roller 41. The B5 type electromagnetic brake three-phase asynchronous motor refers to a power unit that uses a flange mounting method and has electromagnetic braking function. The PLC controller refers to a programmable logic controller used to realize automated operation control of the equipment. Preferably, Q235B grade carbon steel can be selected to ensure structural strength, the B5 type motor can be equipped with a frequency converter to achieve precise speed regulation, and the PLC controller can be expanded with a communication module to realize remote monitoring functions.

[0084] This embodiment ensures structural reliability by employing a carbon steel roller 41, a B5 type motor provides stable power output and rapid braking response, and a PLC controller enables precise automated control. The coordinated operation of these three components gives the equipment stable operating performance, precise speed adjustment capabilities, and flexible operation methods, significantly improving the efficiency and quality consistency of bamboo screening while reducing manual labor intensity and maintenance costs.

[0085] By adopting the above technical solutions, this utility model differs from the prior art and has the following beneficial effects: By dividing the inside of the drum 41 into a coaxial feeding chamber 416 and an annular discharge chamber 417, and using circumferentially spaced screening rollers 42 to form a precise screening gap, efficient automatic sorting of bamboo by diameter is achieved; the screening rollers 42 achieve independent rotation through the roller 411, the first bearing 412 and the second bearing 413, converting the sliding friction when bamboo contacts into rolling friction, significantly reducing damage to the bamboo surface; the sliding parts set on the outside of the drum 41 form a stable fit with the sliding parts on the support, ensuring the axial stability of the drum 41 when rotating at high speed; the cooperation between the first drive unit 11 and the control unit achieves precise speed control and rapid braking response, enabling the equipment to automatically adjust operating parameters according to the characteristics of different bamboo materials; the hinged first cover plate 414 and second cover plate 415 at the feed inlet and discharge outlet effectively prevent dust from escaping and improve the working environment. The second support 2 and the third support 3 are reinforced structures connected by the first crossbeam 24 and the second crossbeam 34, respectively, further enhancing the overall rigidity and vibration resistance of the equipment. The synergistic effect of these solutions allows the equipment to significantly improve sorting accuracy and operational efficiency while ensuring the integrity of the bamboo, solving the problems of low efficiency in traditional manual sorting and environmental pollution from water-based sorting methods, and providing reliable technical support for eco-friendly bamboo processing.

[0086] This invention represents a significant breakthrough in bamboo sorting technology. The combination of the annular discharge chamber 417 and the independently rotatable screening roller 42 forms a highly efficient and non-destructive sorting mechanism. A multi-sliding fit system and a reinforced support structure ensure the ultimate stability of the equipment operation. The intelligent control system enables precise and automated management of the process flow. These technical solutions not only significantly improve the quality and efficiency of bamboo sorting but also avoid the environmental pollution problems associated with traditional sorting methods, providing the bamboo processing industry with a clean, efficient, and reliable production technology platform.

[0087] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A bamboo screening machine, characterized in that, include: First support; The first drive unit is mounted on the first support; The second support is provided with the first sliding member; A third support is disposed opposite to the second support, and a second sliding member is provided on the third support; The screening assembly includes a drum, a screening roller, a third sliding member, and a fourth sliding member. The third and fourth sliding members are sleeved on the outer side of the drum. The drum is connected to the first drive unit. The third sliding member cooperates with the first sliding member, and the fourth sliding member cooperates with the second sliding member. There are multiple screening rollers, which are spaced apart along the inner circumference of the drum. The drum has a storage cavity, which is divided by the multiple screening rollers to form a coaxial feeding cavity and a discharging cavity. The discharging cavity is annular, and the distance between two adjacent screening rollers is adapted to the preset diameter of bamboo. The end of the drum has a feeding port that communicates with the feeding cavity. The side wall of the drum has a discharging port that communicates with the discharging cavity. The feeding cavity is used to fill bamboo to be screened, and the discharging cavity is used to fill screened bamboo. The control unit is electrically connected to the first drive unit.

2. The bamboo screening machine according to claim 1, characterized in that, The first slider and the second slider are configured as grooves; The third and fourth sliding members are configured as raised strips; Alternatively, the first slider and the second slider may be configured as protrusions; The third and fourth sliding members are configured as grooves; Alternatively, the first slider and the second slider may be configured as a slide rail; The third and fourth sliders are configured as sliders or rollers; Alternatively, the first slider and the second slider may be configured as a slider or a roller; The third and fourth sliders are configured as slide rails.

3. The bamboo screening machine according to claim 1, characterized in that, The end of the drum connected to the first drive unit is provided with a drive shaft, and the bamboo screening machine further includes: The transmission assembly includes a first transmission wheel, a second transmission wheel, a flexible coupling, and a transmission belt. The first transmission wheel is sleeved on the output end of the first drive unit and is connected to the output end of the first drive unit through the flexible coupling. The second transmission wheel is sleeved on the transmission shaft, and the transmission belt is sleeved on the outside of the first transmission wheel and the second transmission wheel.

4. The bamboo screening machine according to claim 1, characterized in that, Also includes: Multiple rollers are distributed at intervals along the circumference of the drum, and a screening roller is sleeved on the outside of each roller; Multiple first bearings are disposed at one end of the roller, and one end of the roller is rotatably connected to one end of the roller via the first bearings; Multiple second bearings are disposed at the other end of the roller, and the other end of the roller is rotatably connected to the other end of the roller via the second bearings.

5. The bamboo screening machine according to claim 1, characterized in that, Also includes: A first cover plate is disposed at the feed inlet, the first cover plate is hinged to the roller, and the first cover plate is airtightly connected to the feed inlet; A second cover plate is disposed at the discharge port. The second cover plate is hinged to the roller and is airtightly connected to the discharge port.

6. The bamboo screening machine according to claim 1, characterized in that, The first support includes a first receiving plate and a plurality of first receiving brackets, the plurality of first receiving brackets being distributed circumferentially along the lower surface of the first receiving plate, and the first driving unit being provided above the first receiving plate. The second support includes a second receiving plate and a plurality of second receiving brackets, the plurality of second receiving brackets being distributed circumferentially along the lower surface of the second receiving plate, and the first sliding member being provided above the second receiving plate; The third support includes a third receiving plate and a plurality of third receiving brackets, the plurality of third receiving brackets being distributed circumferentially along the lower surface of the third receiving plate, and the second sliding member being provided above the third receiving plate.

7. The bamboo screening machine according to claim 6, characterized in that, The first receiving bracket and / or the second receiving bracket and / or the third receiving bracket are configured as profiles; Alternatively, the first and / or the second and / or the third support brackets may be configured as steel pipes; Alternatively, the first and / or the second and / or the third support bracket may be configured as angle steel.

8. The bamboo screening machine according to claim 6, characterized in that, The second support also includes: Multiple first crossbeams are arranged between two adjacent second support brackets; The third support also includes: Multiple second crossbeams are set between two adjacent third support brackets.

9. The bamboo screening machine according to claim 1, characterized in that, The outer surface of the screening roller is coated with a wear-resistant layer; Alternatively, the outer surface of the screening roller is coated with a buffer layer.

10. The bamboo screening machine according to claim 1, characterized in that, The roller is configured to be made of carbon steel. The first drive unit is configured as a B5 type electromagnetic brake three-phase asynchronous motor; The control unit is configured as a PLC controller.

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