A flaking air separator

Abstract

The application discloses a flaking air selection device, which comprises a cavity, a transmission assembly, a screening assembly and a separation assembly; the cavity is internally provided with the transmission assembly, the transmission assembly is internally provided with the screening assembly, and the separation assembly is arranged on the bottom wall in the cavity; the transmission assembly transports flaking through a spiral top surface; the flaking is thrown out of the spiral under the action of centrifugal force during the transportation, and then enters the bottom wall in the cavity through free fall; the screening assembly releases wind energy through a spiral side wall, so that the wind power movement direction intersects with the free fall direction of the flaking, the wind power realizes multiple screening of the flaking, and the separation assembly is used for containing the surface flaking and the core flaking after screening.

Description

Technical Field

[0001] This invention relates to the field of wood-based panel processing equipment technology, and in particular to a shavings air separation device. Background Technology

[0002] Wood shavings generally refer to the regular, thin slices cut from wood or other materials. Oriented strand board (OSB) is typically produced using small-diameter timber, thinnings, and heartwood as raw materials, processed into long shavings (generally 40-100mm long, 5-20mm wide, and 0.3-0.7mm thick) using specialized equipment. OSB is an oriented strand board (OSB) manufactured through processes such as debarking, shaving, screening, drying, gluing, oriented stranding, and hot pressing. A key characteristic of OSB is that the surface shavings (long shavings) are arranged longitudinally, while the core shavings (small shavings) are arranged transversely. This crisscrossing arrangement restructures the wood grain, completely eliminating the influence of internal wood stress on processing, resulting in exceptional workability and moisture resistance.

[0003] Wood shavings produced after wood processing need to be dried. However, because the surface shavings and core shavings are mixed and have different moisture contents, the surface shavings are difficult to dry completely, while the core shavings will be damaged during the high-temperature drying process, affecting the quality of the final engineered wood products.

[0004] Therefore, a blade air separation device for screening surface blades and core blades is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a shavings air separation device to solve the technical problem of difficulty in screening surface shavings and core shavings in the existing OSB production process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a blade air separation device, comprising a cavity, a transmission assembly, a screening assembly, and a separating assembly;

[0007] The cavity is equipped with the transmission assembly, which in turn houses the screening assembly. The separating assembly is located on the bottom wall of the cavity. The transmission assembly transports the shavings via a spiral top surface. During transport, the shavings are ejected from the spiral by centrifugal force and then fall freely into the bottom wall of the cavity. The screening assembly releases wind energy through the spiral sidewall, achieving an intersection between the wind direction and the direction of the shavings' free fall, thus enabling multiple screenings of the shavings by the wind. The separating assembly is used to accommodate the screened surface and core shavings.

[0008] Furthermore, the transmission assembly includes a rotating shaft, the top end of which extends out of the cavity and is rotatably connected to a fixed sleeve. A feed hopper is fixedly connected to the top end of the fixed sleeve for feeding planed chips. The bottom end of the fixed sleeve is fixedly connected to the cavity. A partition plate is installed inside the rotating shaft, dividing the interior of the rotating shaft into a feeding chamber and an air inlet chamber. The discharge port is opened on the outer wall of the rotating shaft corresponding to the top of the partition plate. The two ends of the feeding chamber are respectively connected to the fixed sleeve and the discharge port.

[0009] Furthermore, the transmission assembly also includes a helical blade and a fixed baffle. The helical blade is helically wound around the outside of the rotating shaft, and the inner sidewall of the helical blade is fixedly connected to the outer sidewall of the rotating shaft. The top end of the helical blade is positioned corresponding to the bottom end of the discharge port. The end of the helical blade closer to the rotating shaft is higher than the end of the helical blade farther from the rotating shaft. The fixed baffle is also fixedly connected to the end of the helical blade closer to the feed hopper. The top height of the fixed baffle is greater than the top height of the discharge port. The helical top surface of the helical blade is used to transport the shavings.

[0010] Furthermore, the screening component includes an air outlet groove, a connecting cavity, and an air outlet hole. The bottom end of the rotating shaft extends out of the bottom wall of the cavity and is connected to a high-pressure blower. The air outlet groove is also provided on the side wall of the rotating shaft, corresponding to the inner side wall of the spiral blade. The connecting cavity is provided inside the spiral blade. The air outlet hole is provided on the outer side wall of the spiral blade away from the rotating shaft, and is evenly distributed along the outer side wall of the spiral blade. The connecting cavity is connected to the air outlet hole and the air outlet groove respectively. The air energy flows through the air inlet cavity to the interior of the connecting cavity and is then released through the air outlet hole. Since the spiral blade is an inclined spiral, the air force direction is umbrella-shaped and diagonally downward from the center. The direction of movement of the shavings is free fall, so the air force direction must intersect with the shavings. Since the air energy moves from the bottom to the top of the spiral, multiple screenings are achieved during the free fall of the shavings. At the same time, hot air can be provided to dry the shavings, and the heat of the air energy decreases from bottom to top to prevent overheating of the shavings during drying.

[0011] Furthermore, the bottom end of the cavity is inclined, and a support foot is installed at the bottom of the cavity to support the cavity.

[0012] Furthermore, the separating component includes a separating plate, which is arranged in a ring shape. The height and position of the separating plate are set according to the landing trajectory of the surface layer shavings and the core layer shavings. The bottom end of the separating plate is fixedly installed at the bottom of the cavity. The inside of the separating plate is the surface layer shavings, and the outside of the separating plate is the core layer shavings. The bottom of the inclined end of the cavity is provided with a first material outlet and a second material outlet corresponding to the inside and outside of the separating plate, respectively. The first material outlet is used to output the surface layer shavings, and the second material outlet is used to output the core layer shavings.

[0013] Furthermore, the separating component includes a separating ring and a discharge trough. The separating ring is annular, and its top and bottom walls are fixed to the cavity. Multiple discharge troughs are provided on the separating ring. The size of the discharge troughs is larger than that of the core layer shavings but smaller than that of the surface layer shavings. The bottom of the inclined end of the cavity is provided with a first collection outlet and a second collection outlet corresponding to the inside and outside of the separating plate, respectively. The first collection outlet is used to output the surface layer shavings, and the second collection outlet is used to output the core layer shavings. A first solenoid valve and a second solenoid valve are respectively installed at the output ends of the first collection outlet and the second collection outlet. The first solenoid valve and the second solenoid valve are used to control the drying time.

[0014] Furthermore, the blade air separation device also includes a drive assembly, which is driven and connected to the rotating shaft. A drive cavity is provided in the top wall of the cavity. The rotating shaft passes through the drive cavity, and a synchronous gear is rotatably arranged in the drive cavity. The synchronous gear is fixedly installed on the outside of the rotating shaft. The synchronous gear is connected to the drive gear through gear meshing. The rotation center of the drive gear is fixedly connected to the output end of the motor. The motor is driven and connected to the rotating shaft.

[0015] The beneficial effects of this invention are:

[0016] 1. The present invention achieves the rotation of the rotating shaft through a drive component. The rotation of the rotating shaft causes the spiral blades to slide downwards along with the spiral blades and tend to move away from the rotating shaft through the centrifugal force of the rotating shaft and the frictional force of the inclined spiral blades. When the blades detach from the spiral blades, they undergo free fall. Since the surface blades are larger than the core blades, their moisture content and weight are greater. At this time, the external wind force ejected through the side wall of the spiral blades will inevitably intersect with the blades, thus achieving wind selection of the blades.

[0017] 2. The present invention increases the movement length of the shavings within the cavity by using spirally arranged spiral blades, resulting in more uniform shaving screening. When the incoming air is hot air, drying is achieved simultaneously, making the drying more thorough. The air energy released from the bottom of the spirally arranged spiral blades will meet the shavings at the top in sequence, achieving multiple screenings and more uniform drying. The ingenious structure integrates transportation, air separation, and drying.

[0018] 3. The present invention can control the closure of the first aggregate outlet and the second aggregate outlet channel respectively through the first solenoid valve and the second solenoid valve, which is suitable for controlling the drying time of wood of different materials and different moisture contents, and the adaptability of the device is enhanced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cavity in this invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the rotating shaft of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the separator ring of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure between the rotating shaft and the helical blade of the present invention;

[0024] Figure 6 This is a three-dimensional structural schematic diagram of the rotating shaft of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure between the feed inlet and the rotating shaft of the present invention;

[0026] Figure 8 This is the invention Figure 3 A magnified structural diagram at point A.

[0027] Explanation of the reference numerals in the figure:

[0028] 11. Cavity; 12. Air outlet; 13. Support leg; 21. Feed hopper; 22. Fixing sleeve; 31. Rotating shaft; 32. Divider plate; 33. Feeding chamber; 34. Air inlet chamber; 35. Air outlet slot; 36. Discharge port; 41. Motor; 42. Drive gear; 43. Synchronous gear; 51. Spiral blade; 52. Connecting chamber; 53. Air outlet hole; 54. Fixing baffle; 61. Divider plate; 62. Divider ring; 63. Discharge slot; 71. First collection outlet; 72. Second collection outlet; 73. First solenoid valve; 74. Second solenoid valve. Detailed Implementation

[0029] Example 1:

[0030] Please refer to 1-3, 5-8;

[0031] The blade air separation device includes a cavity 11, a transmission assembly, a screening assembly, and a separation assembly;

[0032] The transmission assembly is disposed inside the cavity 11, and the screening assembly is disposed inside the transmission assembly. The separating assembly is disposed on the inner bottom wall of the cavity 11. The transmission assembly transports the shavings through the spiral top surface. During the transportation process, the shavings are thrown out of the spiral under the action of centrifugal force and then fall into the inner bottom wall of the cavity 11. The screening assembly releases wind energy through the spiral side wall, so that the wind direction intersects with the direction of free fall of the shavings, thereby realizing multiple screening of the shavings by the wind. The separating assembly is used to accommodate the screened surface shavings and core shavings.

[0033] As a further embodiment, the transmission assembly includes a rotating shaft 31, the top end of which extends out of the cavity 11 and is rotatably connected to a fixed sleeve 22. A feed hopper 21 is fixedly connected to the top end of the fixed sleeve 22 for feeding planed chips. The bottom end of the fixed sleeve 22 is fixedly connected to the cavity 11. A partition plate 32 is installed inside the rotating shaft 31, which divides the interior of the rotating shaft 31 into a feeding chamber 33 and an air inlet chamber 34. The outer wall of the rotating shaft 31 is provided with an outlet 36 corresponding to the top of the partition plate 32. The two ends of the feeding chamber 33 are respectively connected to the fixed sleeve 22 and the outlet 36.

[0034] As a further embodiment, the transmission assembly further includes a helical blade 51 and a fixed baffle 54. The helical blade 51 is helically wound around the outside of the rotating shaft 31. The inner sidewall of the helical blade 51 is fixedly connected to the outer sidewall of the rotating shaft 31, and the top end of the helical blade 51 is positioned corresponding to the bottom end of the discharge port 36. The end of the helical blade 51 near the rotating shaft 31 is higher than the end of the helical blade 51 away from the rotating shaft 31. The fixed baffle 54 is also fixedly connected to the end of the helical blade 51 near the feed hopper 21. The top height of the fixed baffle 54 is greater than the top height of the discharge port 36. The helical top surface of the helical blade 51 is used to transport the shavings.

[0035] As a further embodiment, the screening component includes an air outlet groove 35, a connecting cavity 52, and air outlet holes 53. The bottom end of the rotating shaft 31 extends out of the bottom wall of the cavity 11 and is connected to a high-pressure blower. The side wall of the rotating shaft 31 is also provided with the air outlet groove 35, which is disposed corresponding to the inner side wall of the spiral blade 51. The connecting cavity 52 is provided inside the spiral blade 51. The outer side wall of the spiral blade 51 away from the rotating shaft 31 is provided with air outlet holes 53 evenly distributed along the outer side wall of the spiral blade 51. The connecting cavity 52 is respectively connected to the... The air outlet 53 is connected to the air outlet slot 35. The air energy flows through the air inlet 34 into the connecting cavity 52, and then is released through the air outlet 53. (Since the spiral blade 51 is an inclined spiral, the air force direction is umbrella-shaped and diagonally downward from the center; while the direction of the blade movement is free fall, the air force direction must intersect with the blade. Since the air energy moves from the bottom to the top of the spiral, it achieves multiple screenings of the blade during the free fall process. At the same time, hot air can be set to dry the blade, and the heat of the air energy decreases from bottom to top to prevent overheating of the blade during drying.)

[0036] As a further embodiment, the bottom end of the cavity 11 is inclined, and a support leg 13 is installed at the bottom of the cavity 11 to support the cavity 11.

[0037] As a further embodiment, the separating component includes a separating plate 61, which is annular. The height and position of the separating plate 61 are set according to the landing trajectory of the surface layer shavings and the core layer shavings. The bottom end of the separating plate 61 is fixedly installed at the bottom of the cavity 11. The inside of the separating plate 61 is the surface layer shavings, and the outside of the separating plate 61 is the core layer shavings. The bottom of the inclined end of the cavity 11 is provided with a first material outlet 71 and a second material outlet 72 corresponding to the inside and outside of the separating plate 61, respectively. The first material outlet 71 is used to output the surface layer shavings, and the second material outlet 72 is used to output the core layer shavings.

[0038] As a further embodiment, the blade air separator further includes a drive assembly, which is driven and connected to the rotating shaft 31. A drive cavity is provided in the top wall of the cavity 11. The rotating shaft 31 passes through the drive cavity, and a synchronous gear 43 is rotatably arranged in the drive cavity. The synchronous gear 43 is fixedly installed on the outside of the rotating shaft 31. The synchronous gear 43 is connected to a drive gear 42 through gear meshing. The rotation center of the drive gear 42 is fixedly connected to the output end of the motor 41. The motor 41 is driven and connected to the rotating shaft 31.

[0039] In this embodiment, the rotating shaft 31 is rotated by a drive component. The rotation of the rotating shaft 31 causes the spiral blades 51 to slide downwards along with the spiral blades 51 and tend to move away from the rotating shaft 31 due to the centrifugal force of the rotating shaft 31 and the frictional force of the inclined spiral blades 51. After the blades detach from the spiral blades 51, they undergo free fall. Since the surface blades are larger than the core blades, their moisture content and weight are also greater. At this time, the external wind force sprayed out through the side wall of the spiral blades 51 will inevitably intersect with the blades, achieving wind selection of the blades. Furthermore, the spiral blades 51 increase the movement length of the blades within the cavity 11, making the blade selection more uniform and the drying more thorough. The wind energy released at the bottom of the spiral blades 51 will meet the blades at the top in sequence, achieving multiple selections and more uniform drying.

[0040] Example 2;

[0041] Please see Figure 4 In Example 1, the moisture content of the screened shavings may not meet the requirements. Therefore, a separation component is further set to set the drying time for shavings with different moisture contents.

[0042] In this embodiment, the separating component includes a separating ring 62 and a discharge trough 63. The separating ring 62 is ring-shaped, and its top and bottom walls are fixed to the cavity 11. The separating ring 62 has multiple discharge troughs 63, the size of which is larger than the core layer slices but smaller than the surface layer slices. The bottom of the inclined end of the cavity 11 has a first collection outlet 71 and a second collection outlet 72 corresponding to the inside and outside of the separating plate 61, respectively. The first collection outlet 71 is used to output the surface layer slices, and the second collection outlet 72 is used to output the core layer slices.

[0043] In this embodiment, the top and bottom walls of the separating ring 62 are fixed to the cavity 11, which increases the space for the surface layer slices and the core layer slices, thereby increasing the amount that the device can screen and improving the screening efficiency.

[0044] Preferably, a first solenoid valve 73 and a second solenoid valve 74 are respectively installed at the output ends of the first aggregate outlet 71 and the second aggregate outlet 72, and the first solenoid valve 73 and the second solenoid valve 74 are used to control the drying time.

[0045] In this embodiment, the first solenoid valve 73 and the second solenoid valve 74 can respectively control the closure of the first aggregate outlet 71 and the second aggregate outlet 72, which is suitable for controlling the drying time of wood of different materials and different moisture contents, and enhances the adaptability of the device.

Claims

1. A blade air separation device, characterized in that: Includes the cavity, transmission assembly, screening assembly, and separation assembly; The cavity is equipped with the transmission assembly, the transmission assembly is equipped with the screening assembly, and the separation assembly is located on the bottom wall of the cavity. The transmission assembly transports the shavings through the top surface of the spiral. During the transportation process, the shavings are thrown out of the spiral under the action of centrifugal force and then fall into the bottom wall of the cavity. The screening assembly releases wind energy through the spiral sidewall, so that the direction of wind movement intersects with the direction of free fall of the shavings, thereby realizing multiple screening of the shavings by wind. The separation assembly is used to accommodate the screened surface shavings and core shavings. The transmission assembly includes a rotating shaft, the top end of which extends out of the cavity and is rotatably connected to a fixed sleeve. A feed hopper is fixedly connected to the top end of the fixed sleeve. The feed hopper is used for feeding the planer blades. The bottom end of the fixed sleeve is fixedly connected to the cavity. A partition plate is installed inside the rotating shaft, which divides the interior of the rotating shaft into a feeding chamber and an air inlet chamber. A discharge port is opened on the outer wall of the rotating shaft corresponding to the top of the partition plate. The two ends of the feeding chamber are respectively connected to the fixed sleeve and the discharge port. The transmission assembly further includes a helical blade and a fixed baffle. The helical blade is helically wound around the outside of the rotating shaft. The inner sidewall of the helical blade is fixedly connected to the outer sidewall of the rotating shaft. The top end of the helical blade is positioned corresponding to the bottom end of the discharge port. The end of the helical blade closer to the rotating shaft is higher than the end of the helical blade farther from the rotating shaft. The fixed baffle is also fixedly connected to the end of the helical blade closer to the feed hopper. The top height of the fixed baffle is greater than the top height of the discharge port. The helical top surface of the helical blade is used to transport the shavings. The screening component includes an air outlet groove, a connecting cavity, and an air outlet hole. The bottom end of the rotating shaft extends out of the bottom wall of the cavity and is connected to a high-pressure blower. The air outlet groove is also provided on the side wall of the rotating shaft. The air outlet groove is provided corresponding to the inner side wall of the spiral blade. The connecting cavity is provided inside the spiral blade. The air outlet hole is provided on the outer side wall of the spiral blade away from the rotating shaft. The connecting cavity is connected to the air outlet hole and the air outlet groove respectively. Air energy flows through the air inlet cavity into the connecting cavity and is then released through the air outlet hole.

2. The blade air separation device according to claim 1, characterized in that: The bottom of the cavity is inclined, and a support leg is installed at the bottom of the cavity to support the cavity.

3. The blade air separation device according to claim 2, characterized in that: The separation component includes a separation plate, which is configured as a ring. The height and position of the separation plate are set according to the landing trajectory of the surface layer slices and the core layer slices. The bottom end of the separation plate is fixedly installed at the bottom of the cavity. The partition plate contains surface shavings inside and core shavings outside. The bottom of the inclined end of the cavity has a first material outlet and a second material outlet corresponding to the inside and outside of the partition plate, respectively. The first material outlet is used to output surface shavings, and the second material outlet is used to output core shavings.

4. The blade air separation device according to claim 3, characterized in that: The separating assembly includes a separating ring and a discharge trough. The separating ring is annular, and its top and bottom walls are fixed to the cavity. Multiple discharge troughs are provided on the separating ring. The size of the discharge troughs is larger than that of the core layer shavings but smaller than that of the surface layer shavings. The bottom of the inclined end of the cavity is provided with a first collection outlet and a second collection outlet, corresponding to the inside and outside of the separating plate, respectively. The first collection outlet is used to output the surface layer shavings, and the second collection outlet is used to output the core layer shavings. A first solenoid valve and a second solenoid valve are respectively installed at the output ends of the first collection outlet and the second collection outlet. The first solenoid valve and the second solenoid valve are used to control the drying time.

5. The blade air separation device according to claim 4, characterized in that: The blade air separation device further includes a drive assembly, which is driven and connected to the rotating shaft. A drive cavity is provided in the top wall of the cavity. The rotating shaft passes through the drive cavity, and a synchronous gear is rotatably arranged in the drive cavity. The synchronous gear is fixedly installed on the outside of the rotating shaft. The synchronous gear is connected to the drive gear through gear meshing. The rotation center of the drive gear is fixedly connected to the output end of the motor. The motor is driven and connected to the rotating shaft.

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