A wood fiber winnowing apparatus and method for fiberboard production

Abstract

This invention relates to a wood fiber air separation device and method for fiberboard production, comprising a base frame, a housing frame, an air separation component, a sealing frame, and a drive component. The housing frame is mounted on the upper end of the base frame, and the air separation component is installed inside the housing frame. The sealing frame is screwed to the upper end of the housing frame, and the drive component is mounted on the sealing frame. The lower end of the drive component is located inside the housing frame and is connected to the air separation component. This invention can accurately disperse wood fiber raw materials during air separation processing, preventing the wood fibers from mixing together and ensuring the air separation effect. It also allows for the reprocessing of unseparated raw materials.

Description

Technical Field

[0001] This invention relates to the field of fiberboard processing technology, specifically to a wood fiber air separation device and method for fiberboard production. Background Technology

[0002] Fiberboard is a type of engineered wood product made by mechanically separating and chemically treating wood or plant fibers, adding adhesives and waterproofing agents, and then molding it under high temperature and pressure. It is an ideal engineered wood product for furniture making. Medium-density fiberboard has a more uniform structure than natural wood, avoiding problems such as rot and insect infestation. It also has low expansion and contraction, making it easy to process. Fiberboard has advantages such as uniform material, small difference in longitudinal and transverse strength, and resistance to cracking, making it widely used.

[0003] In existing wood fiber air separation equipment, such as Chinese Patent No. CN214021977U, a wood fiber air separator for medium and high density fiberboard production is disclosed. Specifically, the fan and drive motor are started, and wood fibers are poured into the box from the feed pipe. Under the air force of the fan, the wood fibers enter the discharge pipe from the horizontal pipe and enter the collection bag. The wood fibers remain in the collection bag. The output shaft of the drive motor drives the turntable to rotate, and the turntable drives the vertical rod to rotate. The vertical rod pulls the pull rod through the connecting rod. When the turntable rotates to the rightmost end, the moving plate moves to the rightmost end. The turntable continues to rotate, and the moving plate moves to the left under the elastic action of the second spring. When the turntable rotates to the leftmost end, the moving plate moves to the leftmost end. The turntable continues to rotate, and the pull rod pulls the moving plate to the right. During the continuous rotation of the turntable, the discharge plate vibrates, causing larger impurities that cannot be blown by the fan to roll quickly down the inclined surface of the discharge plate. The impurities eventually fall into the collection box.

[0004] The aforementioned existing technologies also process raw materials through gravity air separation. However, firstly, in these technologies, the raw materials fall from top to bottom, making it impossible to control the rate of descent. When the materials fall too quickly, accurate air separation becomes impossible. Secondly, as is well known, wood fibers are flexible filamentous materials. If the wood fibers are not dispersed, they will usually become tangled together during air separation, affecting the accuracy of the separation. Therefore, there is room for improvement in the existing air separation equipment technology. Summary of the Invention

[0005] In order to enable air separation processing of wood fiber raw materials and ensure that the air-separated raw materials meet the usage requirements, this application provides a wood fiber air separation device for fiberboard production.

[0006] The technical solution of the wood fiber air separation equipment for fiberboard production provided in this application is as follows.

[0007] A wood fiber air separation device for fiberboard production includes a base frame, a shell frame, an air separation component, a sealing frame, and a drive component. The shell frame is mounted on the upper end of the base frame. The shell frame has a cylindrical hollow structure. The air separation component is installed inside the shell frame. The sealing frame is mounted on the upper end of the shell frame by screws. The drive component is mounted on the sealing frame. The lower end of the drive component is located inside the shell frame and is connected to the air separation component.

[0008] The air separation assembly includes a partition, a feed pipe, a dispersing unit, a conveying unit, an air separator frame, and a collecting unit. The lower end of the housing frame is equipped with a partition, and a feed chamber is provided between the lower end of the partition and the housing frame. A feed pipe communicating with the feed chamber is provided on the outside of the housing frame. A dispersing unit is installed in the middle of the feed chamber. A conveying unit is installed in the middle of the partition. An air separator frame is provided on the outer side of the upper end of the conveying unit. A collecting unit is installed on the inner wall of the housing frame. The dispersing unit, the conveying unit, and the collecting unit are connected to the drive assembly in the middle.

[0009] The conveying unit includes a fixed cylinder and a conveying frame. The fixed cylinder is installed in the middle of the partition. The fixed cylinder has a cylindrical hollow structure. The conveying frame is installed inside the fixed cylinder and is mounted on the drive assembly. The conveying frame has a spiral structure.

[0010] The collection unit includes a collection frame, a feeding frame, a discharge hole, and a collection tray. The collection frame is installed on the inner wall of the housing frame. A collection trough is provided between the collection frame and the housing frame. The feeding frame is provided inside the collection trough. The feeding frame is connected to the drive assembly through a connecting rod. Discharge holes communicating with the collection trough are evenly provided on the inner wall of the housing frame. The discharge holes are opened at an angle. A collection tray is provided outside the discharge holes. The collection tray is located outside the housing frame.

[0011] As a preferred embodiment of the present invention, the drive assembly includes a drive motor, a rotating shaft, and a connecting rod. The upper end of the sealing frame is equipped with a drive motor via a motor mount. A rotating shaft is mounted on the output shaft of the drive motor. A connecting rod is mounted on the lower end of the rotating shaft. The lower end of the connecting rod is connected to the housing frame via a bearing.

[0012] As a preferred embodiment of the present invention, the dispersion unit includes a frustum plate, a distribution plate, and dispersion teeth. The frustum plate is located at the lower end of the housing frame, and the upper surface of the frustum plate is a downward sloping surface. The distribution plate is located above the frustum plate and is evenly installed at the lower end of the rotating shaft. The lower surface of the distribution plate is in close contact with the frustum plate. Dispersion teeth are evenly installed on the upper surface of the frustum plate, and dispersion grooves that cooperate with the dispersion teeth are evenly provided on the distribution plate. Through the cooperation of the distribution plate and the dispersion teeth, the function of accurately dispersing wood fiber raw materials can be achieved.

[0013] As a preferred embodiment of the present invention, the air classifier is installed on the outside of the conveying unit. The cross-section of the air classifier is trapezoidal. Nozzles are evenly arranged on the inclined surface at the upper end of the air classifier, and the nozzles are connected to a high-pressure air pump.

[0014] As a preferred embodiment of the present invention, the feeding rack has a circular structure, and feeding plates are evenly arranged on the outer side of the feeding rack. The feeding plates are made of elastic material and can drive the raw material after air separation to be squeezed out through the discharge hole.

[0015] As a preferred embodiment of the present invention, the partition plate is uniformly provided with slots, a screen is movably arranged in the slots, and a vibrating motor is uniformly arranged at the lower end of the screen. When wood fibers that have not been completely air-separated fall onto the partition plate, the vibrating motor on the partition plate can effectively vibrate and filter the wood fibers.

[0016] Furthermore, the present invention also provides a method of using a wood fiber air separation device for fiberboard production, the method of using the wood fiber air separation device for fiberboard production specifically includes the following steps:

[0017] S1. Raw material feeding: The raw material to be processed is fed into the housing frame through the feed pipe by suction.

[0018] S2. Stirring and conveying: The drive unit stirs the raw material through the dispersion unit, so that the wood fiber chips can be evenly dispersed, and the conveying unit can carry the dispersed raw material upward.

[0019] S3, Air separation for impurity removal: When the raw material falls from the top of the conveying unit, the air separation frame can drive the raw material to be evenly dispersed. The heavier impurities fall on the top of the partition plate, and the lighter wood fibers fall into the collection tank.

[0020] S4. Raw material collection: The drive component drives the air-separated raw material through the discharge hole to be extruded outward via the material feeder, and the extruded raw material falls into the collection tray.

[0021] The beneficial effects of this invention are:

[0022] 1. To enable the reprocessing of raw materials that have not been air-separated, in this embodiment, empty slots are evenly arranged on the partition, and screens are movably arranged in the slots. Vibrating motors are evenly arranged at the lower end of the screens. When wood fibers that have not been completely air-separated fall onto the partition, the vibrating motors on the partition can effectively vibrate and filter the wood fibers, allowing the wood fiber raw materials to be air-separated again. The vibrating motors can play a vibrating role, improving the filtration efficiency of the screens.

[0023] 2. In order to ensure that the wood fiber raw materials do not stick together, a dispersion unit is provided in this embodiment. The distribution plate is driven to rotate by the drive component, so that the distribution plate can drive the wood fiber raw materials to rotate. The dispersion teeth can separate the wood fiber raw materials that are stuck together, which is beneficial to the subsequent air classification process of wood fiber and avoids the phenomenon of poor air classification effect caused by the accumulation of raw materials during air classification.

[0024] 3. In order to accurately push the raw material after air separation outward, a feeding frame 362 is provided in this embodiment. The feeding frame has a circular structure and feeding plates are evenly arranged on the outer side of the feeding frame. The feeding plates are made of elastic material. When the feeding plates on the feeding frame rotate, the feeding plates are in a deformed state. When the feeding plates move to the discharge hole, the feeding plates return to their original shape. The feeding plates can then effectively squeeze the raw material outward. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 This is a cross-sectional structural diagram of the base plate frame, housing frame and air separator assembly of the present invention;

[0029] Figure 4 This is a cross-sectional structural diagram of the housing frame, air separator, sealing frame and drive assembly of the present invention;

[0030] Figure 5 This is a cross-sectional structural diagram of the material feeder of the present invention. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a wood fiber air separation device for fiberboard production, which can accurately disperse and air separate wood fibers.

[0033] Example 1:

[0034] like Figure 1-4As shown in this embodiment, a wood fiber air separation device for fiberboard production includes a base frame 1, a housing frame 2, an air separation component 3, a sealing frame 4, and a drive component 5. The housing frame 2 is mounted on the upper end of the base frame 1. The housing frame 2 has a cylindrical hollow structure. The air separation component 3 is installed inside the housing frame 2. The sealing frame 4 is mounted on the upper end of the housing frame 2 by screws. The drive component 5 is mounted on the sealing frame 4. The lower end of the drive component 5 is located inside the housing frame 2 and is connected to the air separation component 3.

[0035] like Figure 2 As shown, the air separation component 3 includes a partition 31, a feed pipe 32, a dispersing unit 33, a conveying unit 34, an air separation frame 35, and a collection unit 36. The lower end of the housing frame 2 is equipped with a partition 31, and a feed chamber is provided between the lower end of the partition 31 and the housing frame 2. The feed pipe 32, which communicates with the feed chamber, is provided on the outside of the housing frame 2. The dispersing unit 33 is installed in the middle of the feed chamber. The conveying unit 34 is installed in the middle of the partition 31. The air separation frame 35 is provided on the outer side of the upper end of the conveying unit 34. The collection unit 36 ​​is installed on the inner wall of the housing frame 2. The middle of the dispersing unit 33, the conveying unit 34, and the collection unit 36 ​​are connected to the drive component 5.

[0036] In actual use, the raw material to be processed is fed into the housing frame 2 through the feed pipe 32 by suction. The drive component 5 stirs the raw material through the dispersion unit 33, so that the wood fiber debris can be evenly dispersed. The conveying unit 34 can carry the dispersed raw material upward. When the raw material falls from the top of the conveying unit 34, the air classifier 35 can carry the raw material to be evenly dispersed. The heavier impurities fall on the top of the partition 31, and the lighter wood fibers fall into the collection tank. The drive component 5 drives the air-classified raw material to be squeezed out through the discharge hole 363 through the material feeding frame 362. The squeezed raw material falls into the collection tray 364.

[0037] It should be noted that, in order to enable the reprocessing of raw materials that have not been air-separated, in this embodiment, empty slots are evenly arranged on the partition plate 31, and a screen is movably arranged in the empty slots. Vibration motors are evenly arranged at the lower end of the screen. When the wood fibers that have not been completely air-separated fall onto the partition plate 31, the vibration motors on the partition plate 31 can effectively vibrate and filter the wood fibers, so that the wood fiber raw materials can be air-separated again. The vibration motors can play a vibrating role and improve the filtration efficiency of the screen.

[0038] like Figure 3As shown, in order to ensure that the wood fiber raw materials do not stick together, a dispersion unit 33 is provided in this embodiment. The dispersion unit 33 includes a frustum plate 331, a distribution plate 332, and dispersion teeth 333. The frustum plate 331 is provided at the lower end of the shell frame 2. The upper surface of the frustum plate 331 is a downward sloping surface. The distribution plate 332 is provided above the frustum plate 331. The distribution plate 332 is evenly installed at the lower end of the rotating shaft 52. The lower surface of the distribution plate 332 is in close contact with the frustum plate 331. Dispersion teeth 333 are evenly installed on the upper surface of the frustum plate 331. Dispersion grooves that cooperate with the dispersion teeth 333 are evenly provided on the distribution plate 332.

[0039] In actual use, the material separating plate 332 is connected to the drive component 5. The drive component 5 drives the material separating plate 332 to rotate, so that the material separating plate 332 can drive the wood fiber raw material to rotate. The dispersing teeth 333 can separate the wood fiber raw material that is stuck together, which is beneficial to the subsequent air classification treatment of wood fiber and avoids the phenomenon of poor air classification effect caused by the accumulation of raw material during air classification.

[0040] like Figure 3 As shown, in order to move the dispersed raw materials upward, a conveying unit 34 is provided in this embodiment. The conveying unit 34 includes a fixed cylinder 341 and a conveying frame 342. The fixed cylinder 341 is installed in the middle of the partition 31. The fixed cylinder 341 has a cylindrical hollow structure. The conveying frame 342 is provided inside the fixed cylinder 341. The conveying frame 342 is installed on the drive assembly 5 and has a spiral structure.

[0041] In actual use, the drive component 5 can drive the conveyor frame 342 to rotate, and the conveyor frame 342 can then realize the function of conveying the wood fiber raw material upward, so that the wood fiber raw material can be conveyed from bottom to top, which is conducive to the wood fiber being air-separated by gravity.

[0042] The air separator 35 is installed on the outside of the conveying unit 34. The cross-section of the air separator 35 is trapezoidal. Nozzles are evenly arranged on the inclined surface at the upper end of the air separator 35. The nozzles are connected to a high-pressure air pump. The high-pressure air pump drives the wood fibers to move obliquely upward through the nozzles. Lighter wood fibers fall into the collection tank, while heavier impurities fall onto the upper end of the partition 31.

[0043] It should be noted that the pressure of the nozzle is adjustable, allowing for the selection of different sizes of wood fiber raw materials based on the air pressure, which facilitates the accurate selection of wood fiber.

[0044] like Figure 4As shown, the drive assembly 5 includes a drive motor 51, a rotating shaft 52, and a connecting rod 53. The drive motor 51 is mounted on the upper end of the sealing frame 4 via a motor mount. The rotating shaft 52 is mounted on the output shaft of the drive motor 51. The connecting rod 53 is mounted on the lower end of the rotating shaft 52. The lower end of the connecting rod 53 is connected to the housing frame 2 via a bearing.

[0045] In actual use, the drive motor 51 can drive the conveying unit 34 to rotate through the rotating shaft 52, so that the raw materials can be accurately conveyed upward.

[0046] Example 2:

[0047] Reference Figure 4-5 As shown, based on Example 1, in order to achieve uniform air separation and collection of dispersed wood fibers, a corresponding collection unit 36 ​​is provided in Example 2.

[0048] like Figure 4 As shown, the collection unit 36 ​​includes a collection frame 361, a feeding frame 362, a discharge hole 363, and a collection tray 364. The collection frame 361 is installed on the inner wall of the housing frame 2. A collection groove is provided between the collection frame 361 and the housing frame 2. The feeding frame 362 is provided inside the collection groove. The feeding frame 362 is connected to the drive assembly 5 through a connecting rod. Discharge holes 363 communicating with the collection groove are evenly provided on the inner wall of the housing frame 2. The discharge holes 363 are opened at an angle. A collection tray 364 is provided outside the discharge holes 363. The collection tray 364 is located outside the housing frame 2.

[0049] In actual use, after air separation, the wood fibers fall into the collection groove between the collection rack 361 and the shell frame 2. The material feeding rack 362 can squeeze the collected wood fibers so that the wood fibers can be squeezed out from the discharge hole 363. The squeezed raw material falls evenly into the collection tray 364, which is conducive to subsequent manual collection.

[0050] It should be noted that the lower end of the collecting plate 364 is evenly provided with through holes, and a collecting cloth bag can be installed at the lower end of the through holes. When the raw material after air separation is squeezed out through the discharge hole 363, the raw material falls into the inside of the collecting cloth bag through the through holes on the collecting plate 364, so that the air-separated raw material can be accurately collected.

[0051] like Figure 4 As shown, in order to accurately push the air-separated raw material outward, a material feeding frame 362 is provided in this embodiment. The material feeding frame 362 has a circular structure, and the outer side of the material feeding frame 362 is evenly provided with a feeding plate. The feeding plate is made of elastic material and can drive the air-separated raw material to be squeezed outward through the discharge hole 363.

[0052] In actual use, the drive component 5 can drive the material feeder 362 to rotate. When the feeder on the material feeder 362 rotates, the feeder is in a deformed state. When the feeder moves to the discharge hole 363, the feeder returns to its original state, and the feeder can then effectively squeeze the raw material outward.

[0053] Furthermore, the present invention also provides a method of using a wood fiber air separation device for fiberboard production, the method of using the wood fiber air separation device for fiberboard production specifically includes the following steps:

[0054] S1. Raw material preparation: The raw materials to be processed are fed into the housing frame 2 through the feed pipe 32 by suction.

[0055] S2, stirring and conveying: the drive component 5 stirs the raw material through the dispersion unit 33, so that the wood fiber chips can be evenly dispersed and the wood fibers can be prevented from piling up. The conveying unit 34 can drive the dispersed raw material to be conveyed upward.

[0056] S3, air separation and impurity removal: When the raw material falls from the top of the conveying unit 34, the air separation frame 35 can drive the raw material to be blown evenly. The heavier impurities fall on the top of the partition plate 31, and the lighter wood fibers fall into the collection tank.

[0057] S4. Raw material collection: The drive component 5 drives the air-separated raw material through the feed rack 362 to be extruded outward through the discharge hole 363. The extruded raw material falls into the collection tray 364. A collection bag is installed at the lower end of the collection tray 364 to collect the raw material.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A wood fiber air separation device for fiberboard production, comprising a base frame (1), a housing frame (2), an air separation component (3), a sealing frame (4), and a drive component (5), characterized in that: The base plate frame (1) is equipped with a housing frame (2) at its upper end. The housing frame (2) has a cylindrical hollow structure. An air separator assembly (3) is installed inside the housing frame (2). A sealing frame (4) is installed on the upper end of the housing frame (2) by screws. A drive assembly (5) is installed on the sealing frame (4). The lower end of the drive assembly (5) is located inside the housing frame (2) and is connected to the air separator assembly (3). The air separation component (3) includes a partition (31), a feed pipe (32), a dispersion unit (33), a conveying unit (34), an air separation frame (35), and a collection unit (36). The lower end of the housing frame (2) is equipped with a partition (31). A feed chamber is provided between the lower end of the partition (31) and the housing frame (2). A feed pipe (32) communicating with the feed chamber is provided on the outside of the housing frame (2). A dispersion unit (33) is installed in the middle of the feed chamber. A conveying unit (34) is installed in the middle of the partition (31). An air separation frame (35) is provided on the outer side of the upper end of the conveying unit (34). A collection unit (36) is installed on the inner wall of the housing frame (2). The dispersion unit (33), the conveying unit (34), and the collection unit (36) are connected to the drive component (5) in the middle. The conveying unit (34) includes a fixed cylinder (341) and a conveying frame (342). The fixed cylinder (341) is installed in the middle of the partition (31). The fixed cylinder (341) has a cylindrical hollow structure. The conveying frame (342) is provided inside the fixed cylinder (341). The conveying frame (342) is installed on the drive assembly (5). The conveying frame (342) has a spiral structure. The collection unit (36) includes a collection rack (361), a feeding rack (362), a discharge hole (363), and a collection tray (364). The collection rack (361) is installed on the inner wall of the housing frame (2). A collection groove is provided between the collection rack (361) and the housing frame (2). The feeding rack (362) is provided inside the collection groove. The feeding rack (362) is connected to the drive assembly (5) through a connecting rod. Discharge holes (363) communicating with the collection groove are evenly provided on the inner wall of the housing frame (2). The discharge holes (363) are opened at an angle. A collection tray (364) is provided outside the discharge holes (363). The collection tray (364) is located outside the housing frame (2). The air classifier (35) is installed on the outside of the conveying unit (34). The cross section of the air classifier (35) is trapezoidal. Spray nozzles are evenly arranged on the inclined surface of the upper end of the air classifier (35). The spray nozzles are connected to the high-pressure air pump. The material feeder (362) has a circular structure, and the material feeder (362) is uniformly provided with feed plates on the outer side, and the feed plates are made of elastic material; The dispersion unit (33) includes a frustum plate (331), a distribution plate (332), and dispersion teeth (333). The lower end of the housing frame (2) is provided with a frustum plate (331). The upper surface of the frustum plate (331) is a downward sloping surface. The distribution plate (332) is provided above the frustum plate (331). The distribution plate (332) is evenly installed at the lower end of the rotating shaft (52). The lower surface of the distribution plate (332) is in close contact with the frustum plate (331). Dispersion teeth (333) are evenly installed on the upper surface of the frustum plate (331). Dispersion grooves that cooperate with the dispersion teeth (333) are evenly provided on the distribution plate (332). The partition (31) is uniformly provided with slots, and a screen is movably arranged in the slots. A vibrating motor is uniformly arranged at the lower end of the screen.

2. The wood fiber air separation equipment for fiberboard production according to claim 1, characterized in that: The drive assembly (5) includes a drive motor (51), a rotating shaft (52) and a connecting rod (53). The upper end of the sealing frame (4) is equipped with the drive motor (51) via a motor mount. The rotating shaft (52) is mounted on the output shaft of the drive motor (51). The lower end of the rotating shaft (52) is equipped with a connecting rod (53). The lower end of the connecting rod (53) is connected to the housing frame (2) via a bearing.

3. A wood fiber air separation device for fiberboard production according to any one of claims 1-2, characterized in that: The wood fiber air separation equipment for fiberboard production includes a method of use, specifically comprising the following steps: S1, Raw material feeding: The raw material to be processed is fed into the housing frame (2) through the feed pipe (32) by suction; S2, Stirring and conveying: The drive assembly (5) stirs the raw material through the dispersion unit (33) so that the wood fiber chips can be evenly dispersed, and the conveying unit (34) can carry the dispersed raw material upward. S3, air separation and impurity removal: When the raw material falls from the top of the conveying unit (34), the air separation frame (35) can drive the raw material to be blown evenly. The heavier impurities fall on the top of the partition (31), and the lighter wood fibers fall into the collection tank. S4. Raw material collection: The drive component (5) drives the air-separated raw material through the discharge hole (363) to be extruded outward via the material feeder (362), and the extruded raw material falls into the collection tray (364).

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