A raw material pretreatment device and method for moisture-conditioning board production

Abstract

This invention relates to the field of board production technology, specifically to a raw material pretreatment device and method for moisture-controlled board production. The device includes a crushing cylinder, a top cover, and a base. A bracket is installed at the bottom of the base, and a motor is installed at the bottom end of the base. A rotating shaft is installed at the output end of the motor, extending through the base into the interior of the crushing cylinder. A support frame is fixed at the top of the crushing cylinder, and the rotating shaft is rotatably mounted in the support frame. A crushing rod is installed on the rotating shaft. The base has a cavity structure, including an inclined body, a first ring body, and a protruding post. The top ends of the first ring body and the protruding post are fixedly connected to the bottom end of the inclined body, and there is a ring channel between the protruding post and the first ring body. Pressed bamboo and wood fiber rods or blocks are crushed and then enter the crushing cylinder, and after being crushed by the crushing cylinder, they enter the hollow cavity of the base. The generated powder rotates on a turntable, and a magnetic metal separation component separates the powder rotating on the turntable. Finally, the separated magnetic metal is placed in a storage tank to ensure the performance of the electromagnet.

Description

Technical Field

[0001] This invention relates to the field of board production technology, specifically to a raw material pretreatment device and method for humidity-controlled board production. Background Technology

[0002] In the manufacture of humidity-regulating boards, bamboo and wood fibers, due to their natural porous structure, high specific surface area, and controllable moisture absorption properties, have become the core raw material for enhancing the humidity regulation capabilities of materials. Bamboo and wood fibers achieve a dynamic balance between moisture absorption and desorption through the interaction of their internal porous structure and surface polar groups (such as hydroxyl groups) with water molecules in the environment. Before mixing, bamboo and wood fiber raw materials are generally pressed to facilitate transportation and storage, thus forming uniformly sized blocks or rods. In actual production, pre-decomposition is required, converting the pressed bamboo and wood fibers into powder form, and then mixing them with diatomaceous earth, activated carbon, binders, regulators, and reinforcing materials.

[0003] Chinese patent document CN1213031A discloses a humidity-regulating board for interior wall and ceiling decoration. This board utilizes the properties of wood to provide excellent humidity regulation. Furthermore, when used as an interior wall decoration material in a museum, it can appropriately regulate the humidity inside the museum even when the temperature and humidity control system is stopped for a period of time. To achieve the above objectives, this invention provides a humidity-regulating board for interior wall and ceiling decoration. The interior wall decoration humidity-regulating board is characterized by bonding a soft fiberboard with a wood fiber density compressed to 330-380 kg / cm³ and a hard fiberboard with a wood fiber density compressed to 680-730 kg / cm³ and formed with numerous grooves using an adhesive, creating an airflow path between the soft and hard fiberboards. The ceiling decoration humidity-regulating board is characterized by its wood fiber density compressed to 630-670 kg / cm³ and the formation of interlocking recesses and protrusions on both sides. In the drying process, the fibrous material coated with resin adhesive in the above-mentioned adhesive coating process is continuously passed through a dryer to dry it to a moisture content of 8-13%. In the cooling process, each moisture-conditioning plate, which has been compressed to a specified thickness in the above-mentioned forming process, is put into a cooling machine to completely harden the resin adhesive coated on the fibrous material.

[0004] In the production of humidity-controlled boards, when bamboo and wood fiber are used as the main raw materials, they often face the problem of metal impurity contamination. These metal impurities mainly originate from the collection, transportation, and preliminary processing of bamboo and wood raw materials. During bamboo felling, fragments of iron tools (such as saw blades) may be mixed in; during wood processing, there may be residues of metal parts such as nails and screws; and during transportation and storage, rust, steel wire, etc., may also be mixed in. If these metal impurities are not removed in time, they will directly affect the quality of the finished humidity-controlled boards, leading to uneven local strength, uneven surfaces, and even metal oxidation in humid environments, resulting in rust spots, reducing the aesthetics and service life of the boards. When using electromagnets to magnetically separate the raw material powder into metals, the electromagnets will collide with the metals, causing damage. The impact of metal particles (especially high-hardness ferromagnetic materials) can cause scratches on the surface of the electromagnet or peeling off the protective layer (such as insulating varnish or wear-resistant coating). Long-term wear may expose the internal coil, causing short circuits or accelerating oxidation and corrosion. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a raw material pretreatment device and method for producing humidity-regulating boards. Pressed bamboo and wood fiber rods are placed in the device, broken into pieces, and then fed into a crushing cylinder. After further crushing, the powder enters the hollow cavity of the base. The resulting powder rotates on a turntable, and a magnetic metal separation component separates the powder. Finally, the separated magnetic metal is placed in a storage tank to ensure the quality of the humidity-regulating board. Isolation components are installed on the surface of the electromagnet to prevent collisions between the metal and the electromagnet, ensuring the electromagnet's performance and extending its service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A raw material pretreatment device for humidity-controlled board production includes a crushing cylinder, a top cover, and a base. A bracket is installed at the bottom of the base, and a motor is installed at the bottom end of the base. A rotating shaft is installed at the output end of the motor, extending through the base into the crushing cylinder. A support frame is fixed at the top of the crushing cylinder, and the rotating shaft is rotatably mounted in the support frame. A crushing rod is installed on the rotating shaft. The base has a cavity structure, including an inclined body, a first ring body, and a protruding post. The top ends of the first ring body and the protruding post are fixedly connected to the bottom end of the inclined body. An annular channel is formed between the protruding post and the first ring body. A powder inlet is opened on the inclined body, which connects the crushing cylinder and the annular channel. A powder outlet is opened on one side of the first ring body. A turntable is installed inside the annular channel, and the turntable is connected to the rotating shaft through a transmission assembly. A magnetic metal separation assembly is installed above the annular channel.

[0008] Preferably, the transmission assembly includes a first gear, a second gear, and an internal gear ring, with the second gear mounted on a rotating shaft; a guide ring groove is formed inside the first ring body; the turntable includes a second ring body and a third ring body fixedly arranged at the top and bottom, with the second ring body disposed adjacent to the inner ring of the third ring body, the inner ring of the second ring body being sleeved on a protruding post, and the outer circumference of the third ring body being rotatably mounted in the guide ring groove, with an internal gear ring fixed to the inner ring of the third ring body; the second gear meshes with the first gear, and the first gear meshes with the internal gear ring, driving the turntable to rotate inside the first ring body.

[0009] Preferably, the magnetic metal separation component is an isolation belt structure, which includes a first electromagnet, a first rotating roller, a second rotating roller, and an isolation belt. The first and second rotating rollers are located on opposite sides above the ring track. The isolation belt is sleeved on the outside of the first and second rotating rollers. A first storage groove is formed on the protrusion below the isolation belt. A second pulley is provided at one end of the first rotating roller, and a tipping unit is provided at one end of the second rotating roller. The first electromagnet is fixedly connected to the inner wall of the base and is located inside the isolation belt. The drive shaft on the first gear extends to the top of the protrusion. After the drive shaft is connected to the first reversing gearbox, a first bevel gear is installed. The first bevel gear meshes with the second bevel gear. A first pulley is provided on the gear shaft of the second bevel gear. The first pulley and the second pulley are connected by a first belt drive.

[0010] Preferably, the tipping unit is located in the hollow cavity of the first ring body. The tipping unit includes a second belt, a fourth pulley, and a tipping rod. A third pulley is provided at one end of the second roller. The third pulley and the fourth pulley are connected by a second belt drive. A third bevel gear is provided at one end of the fourth pulley. The third bevel gear meshes with the fourth bevel gear. A fifth pulley is provided at the transmission end of the fourth bevel gear. A power shaft passes through the hollow cavity of the first ring body and the annular groove. A sixth pulley is provided at the end of the power shaft located in the cavity. The fifth pulley and the sixth pulley are connected by a third belt. Two sets of eccentric components are rotatably arranged on the inner wall of the annular groove. The eccentric components include a rotating plate, an eccentric shaft mounted on the rotating plate, a horizontal plate rotatably arranged between the two eccentric shafts, and a tipping rod fixed on the horizontal plate. One of the rotating plates is fixedly connected to the end of the power shaft located in the annular groove, and the other rotating plate is rotatably mounted on the inner wall of the annular groove.

[0011] Preferably, transmission teeth are provided on the first roller, the second roller, and the inner ring of the isolation belt, and the isolation belt engages with the outer periphery of the first roller and the second roller through the transmission teeth.

[0012] Preferably, a support plate is fixed at the end of the rotating shaft away from the motor, a first wedge is fixed at the edge of the support plate, and several second wedges are arranged in an array above the first wedge. The second wedges are fixed inside the upper cover, and the first and second wedges have overlapping sections when projected along the axial direction.

[0013] Preferably, the magnetic metal separation component is an isolation plate structure, which includes two end plates arranged opposite each other. A pivot is fixed at the center of the two end plates, and both ends of the pivot are mounted on a first ring body through bearings. One end of the pivot is connected to a first gear through a transmission unit. Several support shafts are arranged in an array at the edges of the two end plates. An arc-shaped plate is sleeved on the support shaft. The support shaft is eccentrically arranged relative to the arc-shaped plate. A torsion spring is provided at the end of the support shaft. A balance column is sleeved on the pivot. A second storage groove begins at the top of the balance column. Several second electromagnets are arranged on the outer periphery of the balance column. An opening and closing unit is provided above the second storage groove.

[0014] Preferably, the opening and closing unit includes an L-shaped plate, the top horizontal plate of the L-shaped plate is fixedly connected to the inner wall of the base, a groove is opened on the vertical plate of the L-shaped plate, an abutment block is slidably arranged in the groove, a guide rod is fixedly installed on the top of the abutment block, the guide rod passes through the top horizontal plate of the L-shaped plate and a limiting block is fixedly installed at its end, a spring is sleeved on the guide rod, and the spring pushes and squeezes the abutment block towards the arc plate; several top protrusions are arranged on the outer periphery of the end plate corresponding to the arc plate array, and a top rod is fixed on the side of the abutment block near the top protrusion.

[0015] Preferably, the transmission unit includes a second reversing gearbox and a third reversing gearbox, the drive shaft on the first gear extends to the top of the protrusion, the drive shaft is connected to the input end of the second reversing gearbox, one end of the pivot is connected to the output end of the third reversing gearbox, and the output end of the second reversing gearbox and the input end of the third reversing gearbox are connected by a belt and a pulley.

[0016] Preferably, a method for processing raw materials using the moisture-conditioning board production raw material pretreatment device includes the following steps:

[0017] S1. Place the pressed bamboo and wood fiber rods into the top plate, start the motor, the motor drives the rotating shaft to rotate, the first wedge at the edge of the pallet forms a shear with the second wedge inside the top cover, so that the bamboo and wood pressed rods or blocks inside are accelerated to be broken into pieces, and the pieces enter the crushing cylinder.

[0018] S2. The crushing rod on the rotating shaft crushes the bamboo and wood fiber rods. The crushed bamboo and wood fiber powder enters the hollow cavity of the base through the powder inlet and falls onto the turntable.

[0019] S3. The rotating shaft meshes with the first gear through the second gear, and the first gear meshes with the internal gear ring, driving the turntable to rotate inside the first ring body, so that the bamboo and wood fiber powder is evenly distributed on the turntable.

[0020] S4. Start the electromagnet. The turntable drives the bamboo and wood fiber powder to rotate under the isolation component. The electromagnet attracts the magnetic metal in the powder through the isolation component. The magnetic metal moves with the isolation component to the storage slot.

[0021] S5. The bamboo and wood fiber powder, after magnetic metal separation, is discharged from the powder outlet, completing the pretreatment. Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This invention features an innovative design with an external isolation component on the electromagnet, simultaneously solving two major technical challenges: electromagnet damage and efficient separation and transport of magnetic metal objects. The isolation component not only blocks direct abrasive impacts from the magnetic metal on the electromagnet but also ensures smooth magnetic field penetration to adsorb metal impurities. A rotating mechanism drives the isolation component to operate continuously, achieving dynamic separation and transport of metal impurities from the bamboo and wood fiber powder. The metal impurities are adsorbed on the surface of the isolation component and move accordingly. Once they leave the electromagnet's magnetic field range, they naturally fall into the collection tank. This structural design not only extends the electromagnet's lifespan and significantly reduces equipment maintenance costs and downtime but also ensures efficient removal of metal impurities through a continuous separation and transport process created by the continuous movement of the isolation component. This provides a purer raw material base for the production of humidity-controlled boards. The creativity of this design lies in organically combining protective and separation functions, resolving the contradiction between static protection and efficient separation through dynamic operation.

[0023] 2. The innovative design in Embodiment 1 of this invention proposes a novel solution to the two major technical challenges of electromagnet protection and complete separation of magnetic metals. By setting an isolation strip around the electromagnet, effective protection is achieved. Simultaneously, a tipping unit is designed at the bottom of the powder, fully exposing and effectively separating the magnetic metal substances buried in the bamboo and wood fiber powder. Specifically, the isolation component is made of non-magnetic, wear-resistant material, forming a physical barrier against the electromagnet, preventing direct contact between the magnetic metal and the electromagnet. The magnetic field generated by the electromagnet acts on the magnetic metal through the isolation component. Simultaneously, a tipping rod located below the turntable agitates the powder from the bottom during rotation, bringing magnetic metal impurities originally buried at the bottom or middle of the powder to the surface, fully exposing them to the magnetic field's influence. These impurities are then adsorbed by the isolation component and transported to the collection area. This dual-structure design is a groundbreaking innovation: on the one hand, the combination of the isolation component and the electromagnet breaks the design limitations of traditional direct-exposed electromagnets, solving the problem of short electromagnet lifespan from the source; on the other hand, the bottom tipping mechanism and the upper adsorption mechanism work together to form a three-dimensional separation system, completely overcoming the technical bottleneck of incomplete separation of deep metal impurities by traditional planar magnetic separation.

[0024] 3. Embodiment 2 of the present invention solves the two key technical problems of electromagnet protection and complete separation of magnetic metal through innovative structural combination. The second electromagnet is arranged on the outer periphery of the balance column, and the entire system is installed inside the ring, forming a highly efficient device that integrates protection and separation functions. Specifically, when the system is running, the pivot drives the end plate to rotate, so that the arc plate forms a protective barrier outside the electromagnet, effectively preventing direct contact between the magnetic metal and the electromagnet, fundamentally avoiding damage to the electromagnet caused by friction, impact, or dust accumulation. At the same time, the arc plate has a degree of freedom of movement, which, combined with the eccentrically designed support, The shaft, with its supporting torsion spring at the end providing just the right amount of flexible support, forms a periodic interactive system with the L-shaped plate, abutment block, and spring, all working in precise coordination with the top protrusion on the outer periphery of the end plate. When the arc-shaped plate rotates above the second collection slot, the abutment block moves towards the arc-shaped plate under the action of the spring, pushing the arc-shaped plate to rotate and unfold, allowing the adsorbed metal impurities to fall into the second collection slot under gravity. When the end plate rotates, the top protrusion pushes the top rod and abutment block together to move away from the arc-shaped plate, and the arc-shaped plate resets and closes under the action of the torsion spring. The top arc-shaped plate opens and closes sequentially, automatically collecting magnetic metal. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the overall installation structure of the device of the present invention;

[0026] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the crushing cylinder of the device of the present invention;

[0027] Figure 3 This is a three-dimensional schematic diagram of the installation position of the crushing rod in the device of the present invention;

[0028] Figure 4 This is a schematic diagram of the magnetic metal separation component in the first embodiment of the present invention;

[0029] Figure 5 This is a three-dimensional schematic diagram of the installation structure of the transmission component of the device of the present invention;

[0030] Figure 6 This is a schematic diagram of the installation structure of the first ring body of the turntable and the base in the first embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the disassembled structure of the first ring body of the turntable and the base in the first embodiment of the present invention;

[0032] Figure 8 This is a three-dimensional schematic diagram of the isolation strip structure of the magnetic metal separation component in the first embodiment of the present invention;

[0033] Figure 9 This is a three-dimensional schematic diagram of the overall structure of the tipping bucket unit in the first embodiment of the present invention;

[0034] Figure 10 This is a three-dimensional schematic diagram of the isolation plate structure of the magnetic metal separation component in the second embodiment of the present invention;

[0035] Figure 11 This is an internal view of the isolation plate structure of the magnetic metal separation component in the second embodiment of the present invention;

[0036] In the diagram: Crushing cylinder-11; Top cover-12; Top plate-13; Powder outlet-14; Bracket-15; Inclined body-16; Powder inlet-17; Rotating shaft-18; Crushing rod-19; Support frame-20; Cover-21; Pallet-22; First wedge-23; Second wedge-24; Base-25; First ring-26; Protruding column-27; Turntable-28; First bevel gear-29; Second bevel gear-30; First roller-31; First belt-32; Isolation belt-33; Second roller-34; Second belt-35; Internal gear ring-36; First Gear-37; Second gear-38; First storage slot-39; Motor-40; First electromagnet-41; Third bevel gear-42; Fourth bevel gear-43; Third belt-44; Power shaft-45; Flip rod-46; Turning plate-47; Eccentric shaft-48; Horizontal plate-49; Pivot-50; End plate-51; Top protrusion-52; Arc plate-53; L-shaped plate-54; Top rod-55; Abutment block-56; Guide rod-57; Spring-58; Balance column-59; Second storage slot-60; Second electromagnet-61; Support shaft-62; Torsion spring-63. Detailed Implementation

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

[0038] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In this invention, the electromagnet includes a first electromagnet 41 and a second electromagnet 61; the isolation component includes an isolation strip 33 and an arc-shaped plate 53; and the storage slot includes a first storage slot 39 and a second storage slot 60. Example

[0040] like Figure 1-9 As shown, a raw material pretreatment device for moisture-regulating board production includes a crushing cylinder 11, a top cover 12, and a base 25. A bracket 15 is installed at the bottom of the base 25. A motor 40 is installed at the bottom end of the base 25, and a rotating shaft 18 is installed at the output end of the motor 40. The rotating shaft 18 extends through the base 25 into the interior of the crushing cylinder 11. A support frame 20 is fixed at the top of the crushing cylinder 11. The rotating shaft 18 is rotatably mounted in the support frame 20, and a crushing rod 19 is installed on the rotating shaft 18. The base 25 has a cavity structure. 25 includes an inclined body 16, a first ring body 26, and a protruding post 27. The top ends of the first ring body 26 and the protruding post 27 are fixedly connected to the bottom end of the inclined body 16. There is an annular channel between the protruding post 27 and the first ring body 26. A powder inlet 17 is opened on the inclined body 16, which connects the crushing cylinder 11 and the annular channel. A powder outlet 14 is opened on one side of the first ring body 26. A turntable 28 is arranged inside the annular channel. The turntable 28 is connected to the rotating shaft 18 through a transmission assembly. A magnetic metal separation assembly is arranged above the annular channel.

[0041] A top plate 13 is provided on the top of the cover 12. The top plate 13 has an annular cylindrical structure, which plays a stabilizing role when the bamboo and wood fiber pressed blocks are placed inside, and provides space for the fragments. The support frames 20 are all fixedly installed on the cover 21, and the rotating shaft 18 is installed in the cover 21 through bearings.

[0042] The working process of the device in this embodiment is as follows: After the pressed bamboo and wood fiber blocks are fed into the feed port on the crushing cylinder 11, the motor 40 is started. The motor 40 drives the rotating shaft 18 to rotate, which in turn drives the crushing rod 19, the support plate 22 at the top of the rotating shaft 18, and the first wedge 23 to rotate. The rotating first wedge 23 and the fixed second wedge 24 move relatively quickly to break the pressed bamboo and wood fiber blocks into pieces. The broken pieces enter the crushing cylinder 11, and the crushing rod 19 crushes the crushed blocks. After crushing, powder is formed and enters the ring channel in the base 25 through the powder inlet 17 and falls onto the turntable 28. The rotating shaft 18 drives the turntable through the transmission assembly. As the turntable 28 rotates, the powder passes sequentially below the magnetic metal separation component under the drive of the turntable 28. The magnetic metal separation component separates the powder rotating on the turntable 28, and finally places the separated magnetic metal inside the first collection tank 39. This device effectively solves the pollution problem caused by metal impurities mixed in during the collection, transportation and processing of bamboo and wood fibers to the production of humidity-controlled boards, improves the production quality of humidity-controlled boards, extends the service life of humidity-controlled board production equipment, saves energy consumption and reduces production costs during the production process, and meets the quality requirements and environmental protection needs of modern industrial production for humidity-controlled boards.

[0043] Furthermore, the transmission assembly includes a first gear 37, a second gear 38, and an internal gear ring 36. The second gear 38 is mounted on the rotating shaft 18. A guide ring groove is formed inside the first ring body 26. The turntable 28 includes a second ring body and a third ring body fixed at the top and bottom, respectively. The second ring body is arranged adjacent to the inner ring of the third ring body. The inner ring of the second ring body is sleeved on the protrusion 27. The outer circumference of the third ring body is rotatably mounted in the guide ring groove. The inner ring of the third ring body is fixed with the internal gear ring 36. The second gear 38 meshes with the first gear 37, and the first gear 37 meshes with the internal gear ring 36, driving the turntable 28 to rotate inside the first ring body 26.

[0044] See Figure 5 When the motor 40 drives the rotating shaft 18 to rotate, the rotating shaft 18 drives the second gear 38 to rotate. The second gear 38 meshes with the first gear 37, and the first gear 37 meshes with the internal gear ring 36. The internal gear ring 36 and the turntable 28 rotate together. The third ring body at the lower part of the turntable 28 is located in the ring channel and is rotatably set. When the powder inside the crushing cylinder 11 falls onto the third ring body at the lower part of the turntable 28, they rotate together and pass under the magnetic metal separation component to achieve rapid separation of magnetic metal in the powder.

[0045] Furthermore, the magnetic metal separation component is an isolation belt structure, which includes a first electromagnet 41, a first rotating roller 31, a second rotating roller 34, and an isolation belt 33. The first rotating roller 31 and the second rotating roller 34 are located on both sides above the ring track. The isolation belt 33 is sleeved on the outside of the first rotating roller 31 and the second rotating roller 34. A first storage groove 39 is opened on the protrusion 27 below the isolation belt 33. A second pulley is provided at one end of the first rotating roller 31, and a tipping unit is provided at one end of the second rotating roller 34. The first electromagnet 41 is fixedly connected to the inner wall of the base 25 and is located inside the isolation belt 33. The drive shaft on the first gear 37 extends to the top of the protrusion 27. After the drive shaft is connected to the first reversing gear box, a first bevel gear 29 is installed. The first bevel gear 29 meshes with the second bevel gear 30. A first pulley is provided on the gear shaft of the second bevel gear 30. The first pulley and the second pulley are connected by a first belt 32.

[0046] See Figure 6 , Figure 7 and Figure 8 When the device in this embodiment is running, the turntable 28 drives the bamboo and wood fiber powder to rotate and pass under the isolation belt 33. The first electromagnet 41 generates a magnetic field that acts on the magnetic metal impurities in the powder, adsorbing them onto the outer surface of the isolation belt 33. As the first belt 32 drives the isolation belt 33 to rotate, the adsorbed metal impurities move with the isolation belt 33, and fall off into the first collection tank 39 after leaving the magnetic field range of the first electromagnet 41. The isolation belt 33 is set on the surface of the electromagnet to avoid collisions between the metal and the electromagnet, and to prevent the impact of metal particles (especially high-hardness ferromagnetic materials) from causing scratches on the surface of the electromagnet or peeling off the protective layer (such as insulating paint, wear-resistant coating), thus slowing down wear or accelerating oxidation and corrosion, protecting the internal circuitry, ensuring the performance of the electromagnet, and extending its service life.

[0047] The first roller 31 and the second roller 34 are both installed inside the hollow cavity of the base 25 via bearing seats.

[0048] Furthermore, the tipping unit is located within the hollow cavity of the first ring body 26. The tipping unit includes a second belt 35, a fourth pulley, and a tipping rod 46. A third pulley is provided at one end of the second roller 34. The third pulley and the fourth pulley are connected by the second belt 35. A third bevel gear 42 is provided at one end of the fourth pulley. The third bevel gear 42 meshes with the fourth bevel gear 43. A fifth pulley is provided at the transmission end of the fourth bevel gear 43. A power shaft 45 passes through the hollow cavity of the first ring body 26 and the annular groove. A sixth pulley is provided at the end of the power shaft 45 located within the cavity. The fifth pulley and the sixth pulley are connected by a third belt 44. Two sets of eccentric components are rotatably arranged on the inner wall of the annular groove. The eccentric components include a rotating plate 47, an eccentric shaft 48 mounted on the rotating plate 47, a horizontal plate 49 rotatably arranged between the two eccentric shafts 48, and a tipping rod 46 fixed on the horizontal plate 49. One rotating plate 47 is fixedly connected to the end of the power shaft 45 located within the annular groove, and the other rotating plate 47 is rotatably mounted on the inner wall of the annular groove.

[0049] See Figure 9 The power is converted through the pulley at one end of the second roller 34, the steering gear and two sets of belts, and transmitted to the power shaft 45. When the power shaft 45 drives the rotating plate 47 to rotate, the eccentric shaft 48 away from the center of the rotating plate 47 drives the horizontal plate 49 to move up and down, and at the same time drives the flipping rod 46 to move up and down, disturbing or picking up the bamboo and wood fiber powder, so that the magnetic metal inside the powder is exposed to the magnetic force range of the first electromagnet, increasing the adsorption range and further promoting the separation of the metal inside the powder.

[0050] Furthermore, transmission teeth are provided on the first roller 31, the second roller 34, and the inner ring of the isolation belt 33, and the isolation belt 33 engages with the outer periphery of the first roller 31 and the second roller 34 through the transmission teeth.

[0051] See Figure 8 Transmission teeth are provided on the first roller 31, the second roller 34, and the inner ring of the isolation belt 33 to ensure that slippage does not occur during transmission, guaranteeing stable transmission to the second roller 34 and further transmitting power to the tipping unit. This device uses a single power source to supply multi-stage power output, simplifying the device, saving space, and reducing equipment costs.

[0052] Furthermore, a support plate 22 is fixed at one end of the rotating shaft 18 away from the motor 40, a first wedge 23 is fixed at the edge of the support plate 22, and several second wedges 24 are arranged in an array above the first wedge 23. The second wedges 24 are fixed inside the upper cover 12, and the first wedge 23 and the second wedge 24 have overlapping sections when projected along the axial direction.

[0053] See Figure 2When the device is working, the motor 40 drives the rotating shaft 18 to rotate, which in turn drives the pallet 22 and the first wedge 23 to rotate synchronously. The rotating first wedge 23 and the fixed second wedge 24 periodically form a cutting action. The wedge-shaped cutting force generated by the relative motion of the overlapping section between the two is used to perform preliminary fragmentation of the bamboo and wood fiber compressed blocks put into the crushing cylinder 11, so that the large compressed blocks are divided into smaller fragments, reducing the workload of the subsequent crushing rod 19, improving the crushing efficiency, and avoiding incomplete crushing or jamming caused by the excessively large compressed blocks. This extends the service life of the equipment, reduces energy consumption, and improves production efficiency. This wedge combination design makes full use of the mechanical cutting principle and forms a highly efficient material pretreatment mechanism, providing a good material foundation for the subsequent fine crushing and metal separation processes.

[0054] It is worth noting that the centrifugal force of the pallet 22 causes the internal bamboo and wood pressing blocks to move toward the first wedge 23 and the second wedge 24, accelerating the fragment processing.

[0055] A method for processing raw materials using a moisture-conditioning board production raw material pretreatment device includes the following steps:

[0056] S1. Place the pressed bamboo and wood fiber rods into the top plate 13 to provide space for fragmentation; start the motor 40, which drives the rotating shaft 18 to rotate. At the same time, the first wedge 23 at the edge of the support plate 22 fixed at the end of the rotating shaft 18 away from the motor 40 cooperates with the second wedge 24 inside the top cover 12. The centrifugal force of the support plate 22 is used to make the bamboo and wood pressed blocks inside move towards the first wedge 23 and the second wedge 24, thus accelerating the fragmentation process.

[0057] S2. The crushing rod 19 on the rotating shaft 18 crushes the bamboo and wood fiber rods. The crushed bamboo and wood fiber powder enters the hollow cavity of the base 25 through the powder inlet 17 and falls onto the turntable 28.

[0058] S3. The rotating shaft 18 meshes with the first gear 37 through the second gear 38, and the first gear 37 meshes with the internal gear ring 36, driving the turntable 28 to rotate inside the first ring body 26, so that the bamboo and wood fiber powder is evenly distributed on the turntable 28.

[0059] S4. Start the first electromagnet 41. The turntable 28 drives the bamboo and wood fiber powder to pass under the isolation belt 33. The first electromagnet 41 adsorbs the magnetic metal in the powder through the isolation belt 33. The magnetic metal moves with the isolation belt 33. When it leaves the magnetic field range of the first electromagnet 41, it naturally falls into the first collection tank 39. At the same time, the second roller 34 drives the tipping unit to work. The tipping rod 46 moves up and down to turn the powder from the bottom, so that the magnetic metal impurities buried at the bottom or middle of the powder are brought to the surface and fully exposed to the magnetic field range.

[0060] S5. The bamboo and wood fiber powder after magnetic metal separation is discharged from the powder outlet 14, completing the pretreatment. Example

[0061] Unlike Embodiment 1, the magnetic metal separation assembly is an isolation plate structure. The isolation plate structure includes two end plates 51 arranged opposite each other. A pivot 50 is fixed at the center of the two end plates 51. Both ends of the pivot 50 are mounted on the first ring body 26 through bearings. One end of the pivot 50 is connected to the first gear 37 through a transmission unit. Several support shafts 62 are arranged in an array at the edges of the two end plates 51. An arc-shaped plate 53 is sleeved on the support shaft 62. The support shaft 62 is eccentrically arranged relative to the arc-shaped plate 53. A torsion spring 63 is provided at the end of the support shaft 62. A balance column 59 is sleeved on the pivot 50. A second storage groove 60 starts from the top of the balance column 59. Several second electromagnets 61 are arranged on the outer periphery of the balance column 59. An opening and closing unit is provided above the second storage groove 60.

[0062] See Figure 10 The balancing column 59 is mounted on the pivot 50. When the pivot 50 rotates, the horizontal column 59 remains stationary. A counterweight is set at the bottom of the balancing column 59, and a second storage groove 60 is set at the top opening of the balancing column 59, so that the center of gravity of the balancing column 59 shifts downward and is in a stable state. The pivot 50 is fixedly connected to the end plate 51, the end plate 51 is fixedly connected to the support shaft 62, and the support shaft 62 is rotatably connected to the arc plate 53.

[0063] When the pivot 50 rotates, it drives the two end plates 51, the support shaft 62 and the arc plate 53 to rotate together. The balance column 59 is in a stationary state. The second electromagnet 61 set on the outer periphery of the balance column 59 attracts the magnetic metal to the arc plate 53. When the arc plate 53 and the magnetic metal rotate together to the top opening and closing unit, the opening and closing unit abuts against and pushes open the arc plate 53 below. There is no electromagnet set directly below this arc plate. Under the action of gravity, the magnetic metal falls into the second storage groove 60.

[0064] It should be noted that the pivot 50 adopts a hollow structure, and conductive slip rings are set on both the inside and outside of the arc plate on the pivot 50. The external power is introduced into the second electromagnet inside the arc plate through the conductive slip rings. The conductive slip rings are existing technology, and their working principle will not be explained in detail here.

[0065] Furthermore, the opening and closing unit includes an L-shaped plate 54, the top horizontal plate of the L-shaped plate 54 is fixedly connected to the inner wall of the base 25, a sliding groove is opened on the vertical plate of the L-shaped plate 54, an abutment block 56 is slidably arranged in the sliding groove, a guide rod 57 is fixedly installed on the top of the abutment block 56, the guide rod 57 passes through the top horizontal plate of the L-shaped plate 54 and a limiting block is fixedly installed at its end, a spring 58 is sleeved on the guide rod 57, and the spring 58 pushes and squeezes the abutment block 56 towards the arc plate 53; several top protrusions 52 are arranged in an array on the outer periphery of the end plate 51 corresponding to the arc plate 53, and a top rod 55 is fixedly installed on the side of the abutment block 56 near the top protrusions 52.

[0066] See Figure 10 and Figure 11 Under normal conditions, under the force of spring 58, spring 58 pushes the abutment block 56 towards the arc plate 53 and squeezes the arc plate below, causing the arc plate to rotate around the support shaft 62 and tilt. At this time, the bottom of the push rod 55 abuts against the upper edge of the end plate 51. No electromagnet is set directly below this arc plate. Under the action of gravity, the magnetic metal falls into the second storage groove 60. When the end plate 59 rotates, the top protrusion 52 pushes the push rod 55 to move upward, which drives the abutment block 56 to move upward, so that the arc plate resets and closes, which is conducive to the contact of the abutment block 56 with the next arc plate, and the opening and closing cycle continues.

[0067] Furthermore, the transmission unit includes a second reversing gearbox (not shown) and a third reversing gearbox (not shown). The drive shaft on the first gear 37 extends to the top of the protrusion 27. The drive shaft is connected to the input end of the second reversing gearbox. One end of the pivot 50 is connected to the output end of the third reversing gearbox. The output end of the second reversing gearbox and the input end of the third reversing gearbox are connected by a belt and a pulley.

[0068] When the first gear 37 rotates, its drive shaft transmits power to the second reversing gearbox (not shown in the figure) at the top of the protrusion 27. The second reversing gearbox converts the vertical rotational motion into horizontal rotational motion and drives the belt to rotate through the pulley at its output end. The belt transmits power to the pulley at the input end of the third reversing gearbox (not shown in the figure), which then changes the direction of rotation again, and its output end drives the pivot 50 to rotate. This design of a double reversing gearbox combined with belt drive solves the power transmission problem in complex spatial layouts, realizing a power transmission path from the vertical axis to the horizontal axis and then to a specific angle, enabling the isolation plate structure to rotate at a suitable speed and direction.

[0069] A method for processing raw materials using a moisture-conditioning board production raw material pretreatment device includes the following steps:

[0070] S1. Place the pressed bamboo and wood fiber rods into the top plate 13 to provide space for fragmentation; start the motor 40, which drives the rotating shaft 18 to rotate. At the same time, the first wedge 23 at the edge of the support plate 22 fixed at the end of the rotating shaft 18 away from the motor 40 cooperates with the second wedge 24 inside the top cover 12. The centrifugal force of the support plate 22 is used to make the bamboo and wood pressed blocks inside move towards the first wedge 23 and the second wedge 24, thus accelerating the fragmentation process.

[0071] S2. The crushing rod 19 on the rotating shaft 18 crushes the bamboo and wood fiber rods. The crushed bamboo and wood fiber powder enters the hollow cavity of the base 25 through the powder inlet 17 and falls onto the turntable 28.

[0072] S3. The rotating shaft 18 meshes with the first gear 37 through the second gear 38, and the first gear 37 meshes with the internal gear ring 36, driving the turntable 28 to rotate inside the first ring body 26, so that the bamboo and wood fiber powder is evenly distributed on the turntable 28.

[0073] S4. The second electromagnet 61 attracts magnetic metals in the powder through the arc plate 53. The pivot 50 drives the end plate 51 to rotate, and the arc plate 53 forms a protective barrier outside the electromagnet. When the arc plate 53 rotates to above the second storage groove 60, under the action of the spring 58, the abutment block 56 pushes the arc plate 53 to rotate and unfold, so that the attracted metal impurities fall into the second storage groove 60 under the action of gravity. When the end plate 51 rotates, the top protrusion 52 pushes the top rod 55 to move away from the arc plate 53. The arc plate 53 is reset and closed under the action of the torsion spring 63, and the opening and closing cycle of the next arc plate is performed in sequence.

[0074] S5. The bamboo and wood fiber powder after magnetic metal separation is discharged from the powder outlet 14, completing the pretreatment.

[0075] The present invention has been illustrated through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that all related improvements to the present invention fall within the protection and disclosure scope of the present invention.

Claims

1. A raw material pretreatment device for humidified board production, comprising a pulverizing cylinder (11), an upper cover (12) and a base (25), wherein a bracket (15) is installed at the bottom of the base (25), characterized in that, The bottom end of the base (25) is provided with a motor (40), the output end of the motor (40) is provided with a rotating shaft (18), the rotating shaft (18) extends through the base (25) to the inside of the crushing cylinder (11), the top of the crushing cylinder (11) is fixedly provided with a support frame (20), the rotating shaft (18) is rotatably arranged in the support frame (20), and a crushing rod (19) is arranged on the rotating shaft (18); the base (25) is a cavity structure, the base (25) comprises an inclined body (16), a first ring body (26) and a convex column (27), the top ends of the first ring body (26) and the convex column (27) are fixedly connected to the bottom end of the inclined body (16), there is a ring channel between the convex column (27) and the first ring body (26), a powder inlet (17) is formed in the inclined body (16), the powder inlet (17) is communicated with the crushing cylinder (11) and the ring channel, and a powder outlet (14) is formed in one side of the first ring body (26); a rotating disc (28) is arranged in the ring channel, the rotating disc (28) is connected to the rotating shaft (18) through a transmission assembly, and a magnetic metal separation assembly is arranged above the ring channel; the transmission assembly comprises a first gear (37), a second gear (38) and an inner gear ring (36), the second gear (38) is arranged on the rotating shaft (18); a guide ring groove is formed in the first ring body (26); the rotating disc (28) comprises a second ring body and a third ring body which are fixedly arranged above and below, the second ring body is arranged close to the inner ring of the third ring body, the inner ring of the second ring body is sleeved on the convex column (27), the outer periphery of the third ring body is rotatably arranged in the guide ring groove, and the inner ring of the third ring body is fixedly provided with the inner gear ring (36); the second gear (38) is engaged with the first gear (37), the first gear (37) is engaged with the inner gear ring (36), and the rotating disc (28) is driven to rotate in the first ring body (26); the magnetic metal separation assembly is a separation belt structure, the separation belt structure comprises a first electromagnet (41), a first rotating roller (31), a second rotating roller (34) and a separation belt (33), the first rotating roller (31) and the second rotating roller (34) are arranged on the two sides above the ring channel, the separation belt (33) is sleeved on the outer portions of the first rotating roller (31) and the second rotating roller (34), a first receiving groove (39) is formed in the convex column (27) below the separation belt (33), one end of the first rotating roller (31) is provided with a second pulley, and one end of the second rotating roller (34) is provided with a skip unit; the first electromagnet (41) is fixedly connected to the inner wall of the base (25) and arranged in the separation belt (33); a transmission shaft on the first gear (37) extends to the top of the convex column (27), a first bevel gear (29) is arranged after the transmission shaft is connected to a first direction-changing gear box, the first bevel gear (29) is engaged with a second bevel gear (30), a first pulley is arranged on the gear shaft of the second bevel gear (30), and the first pulley and the second pulley are transmissionally connected through a first belt (32).The tipping unit is located in the hollow cavity of the first ring body (26), and comprises a second belt (35), a fourth belt pulley and a tipping rod (46). One end of the second roller (34) is provided with a third belt pulley, the third belt pulley and the fourth belt pulley are transmissionally connected through the second belt (35), one end of the fourth belt pulley is provided with a third bevel gear (42), the third bevel gear (42) is engaged with a fourth bevel gear (43), and the transmission end of the fourth bevel gear (43) is provided with a fifth belt pulley. A power shaft (45) is arranged between the hollow cavity of the first ring body (26) and the ring groove, one end of the power shaft (45) located in the cavity is provided with a sixth belt pulley, and the fifth belt pulley and the sixth belt pulley are connected through a third belt (44). Two sets of eccentric components are rotationally arranged on the inner wall of the ring groove, the eccentric components comprise a rotating plate (47) and an eccentric shaft (48) mounted on the rotating plate (47), a cross plate (49) is rotationally arranged between the two eccentric shafts (48), the cross plate (49) is fixedly provided with the tipping rod (46), one end of the power shaft (45) located in the ring groove is fixedly connected with one rotating plate (47), and the other rotating plate (47) is rotationally mounted on the inner wall of the ring groove.

2. The raw material pretreatment device for humidification control board production according to claim 1, characterized by, The first rotating roller (31), the second rotating roller (34) and the inner ring of the isolation belt (33) are provided with transmission teeth, and the isolation belt (33) is engaged with the outer periphery of the first rotating roller (31) and the second rotating roller (34) through the transmission teeth.

3. The raw material pretreatment device for humidification control board production according to claim 1, characterized by, The end of the rotating shaft (18) away from the motor (40) is fixedly provided with a supporting plate (22), the edge of the supporting plate (22) is fixedly provided with a first wedge block (23), a plurality of second wedge blocks (24) are arranged above the first wedge block (23), the second wedge blocks (24) are fixed in the inside of the upper cover (12), and the first wedge block (23) and the second wedge blocks (24) have an overlapping section in the axial projection.

4. The raw material pretreatment device for humidification control board production according to claim 1, characterized by The magnetic metal separation assembly is in the form of a separation plate structure, the separation plate structure comprises two end plates (51) oppositely arranged, the center of the two end plates (51) is fixedly provided with a pivot (50), the two ends of the pivot (50) are both mounted on the first ring body (26) through bearings, one end of the pivot (50) is connected with a first gear (37) through a transmission unit, the edges of the two end plates (51) are arranged with a plurality of supporting shafts (62), the supporting shafts (62) are sleeved with arc-shaped plates (53), the supporting shafts (62) are eccentrically arranged relative to the arc-shaped plates (53), the ends of the supporting shafts (62) are provided with torsional springs (63), the pivot (50) is sleeved with a balance cylinder (59), the top of the balance cylinder (59) is provided with a second receiving groove (60), the outer periphery of the balance cylinder (59) is provided with a plurality of second electromagnets (61), and an opening and closing unit is arranged above the second receiving groove (60).

5. The raw material pretreatment device for humidification control board production according to claim 4, characterized by, The opening and closing unit comprises an L-shaped plate (54), the top horizontal plate of the L-shaped plate (54) is fixedly connected to the inner wall of the base (25), a sliding groove is formed in the vertical plate of the L-shaped plate (54), an abutting block (56) is slidably arranged in the sliding groove, the top of the abutting block (56) is fixedly provided with a guide rod (57), the guide rod (57) penetrates through the top horizontal plate of the L-shaped plate (54) and is fixedly provided with a limiting block at the end, a spring (58) is sleeved on the guide rod (57), and the spring (58) pushes the abutting block (56) to be extruded in the direction of being close to the arc-shaped plate (53); a plurality of top protrusions (52) are arranged on the outer periphery of the end plate (51) corresponding to the arc-shaped plate (53), and a top rod (55) is fixedly arranged on one side of the abutting block (56) close to the top protrusion (52).

6. The raw material pretreatment device for humidification control board production according to claim 4, characterized by The transmission unit comprises a second direction-changing gear box and a third direction-changing gear box, a transmission shaft on the first gear (37) extends to the top of the convex column (27), the transmission shaft is connected with the input end of the second direction-changing gear box, one end of the pivot (50) is connected with the output end of the third direction-changing gear box, and the output end of the second direction-changing gear box is in transmission connection with the input end of the third direction-changing gear box through a belt and a belt pulley.

7. A method of processing a raw material for a moisture adjusting board production using the raw material pre-processing apparatus according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: S1, placing the bamboo-wood fiber rod formed by pressing in the top plate (13), starting the motor (40), the motor (40) drives the rotating shaft (18) to rotate, the first wedge block (23) at the edge of the supporting plate (22) forms shearing with the second wedge block (24) in the inside of the upper cover (12), so that the bamboo-wood pressing rod in the inside is accelerated to be fragmented, and the fragments enter the crushing cylinder (11); S2, the crushing rod (19) on the rotating shaft (18) crushes the bamboo-wood fiber rod, and the crushed bamboo-wood fiber powder enters the hollow cavity inside the base (25) through the powder inlet (17) and falls on the rotating disc (28); S3, the rotating shaft (18) is engaged with the first gear (37) through the second gear (38), the first gear (37) is engaged with the inner ring gear (36), and the rotating disc (28) is driven to rotate inside the first ring body (26), so that the bamboo-wood fiber powder is uniformly distributed on the rotating disc (28); S4, start the electromagnet, the rotating disc (28) drives the bamboo-wood fiber powder to rotate below the isolation component, the electromagnet absorbs the magnetic metal in the powder through the isolation component, and the magnetic metal moves to the storage groove along with the isolation component; S5, the bamboo-wood fiber powder separated by the magnetic metal is discharged from the powder outlet (14), and the pretreatment is completed.

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