Rotary-cut wood shaving foreign matter sorting device

Abstract

The utility model discloses a rotary cutting wood shaving foreign matter sorting device, which relates to the technical field of wood machinery, and comprises a feeding conveying belt, a sorting box body and a discharging conveying belt, the output end of the feeding conveying belt extends into the upper part of the sorting box body, and an air blower and a feeding horn mouth which are oppositely arranged are arranged on the sorting box body; a screen is further mounted at the feeding horn mouth; the device further comprises an induced draft fan, a feeding conveying pipe is communicated between the inlet end of the induced draft fan and the feeding horn mouth, the outlet end of the induced draft fan is further connected with a discharging conveying pipe, and the outlet end of the discharging conveying pipe is in butt joint with the discharging conveying belt. And a foreign matter outlet is further formed in the bottom of the sorting box body. On the premise that the shape of the rotary-cut wood shavings is not damaged, foreign matters in the rotary-cut wood shavings are screened, and the tidiness of rotary-cut wood shaving raw materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wood machinery, in particular to a device for sorting foreign matter from rotary-cut wood shavings. Background Art

[0002] In the production process of oriented strand board (OSB) and strong core particle board (SCB), the surface layer and core layer use rotary cut particles of different sizes respectively. The rotary cut particles are usually stored in the particle bin, and there is often mud, sand, gravel, etc. on the ground. As a result, foreign matter such as parts, bark, and large wood cores are inevitably mixed into the particle raw materials during the production process of oriented strand board (OSB) and strong core particle board (SCB). If these foreign matter are not effectively separated and cleaned, they will enter the production process, which will not only affect the product quality, but also damage the equipment in serious cases. Therefore, it is very necessary to add a foreign matter separation device to the transportation channel of the rotary cut particles.

[0003] Chinese utility model patent 201620431778.2 discloses a machine for sorting and screening composite particleboard. The machine comprises a sorting box with a rotary cutter for pulverizing the particles, a hot air blower for drying the particles within the air separation box, a waste blower above the hot air blower, and a dust removal blower within the waste box. While the device utilizes a rotary cutter to pulverize larger particles for thorough screening, this process results in the pulverized particles becoming fragmented, hindering their use and failing to adequately separate foreign matter from the particles. Utility Model Content

[0004] The utility model aims to provide a device for sorting foreign matter in rotary cut shavings, which can screen foreign matter in the rotary cut shavings without destroying the shape of the rotary cut shavings, thereby improving the neatness of the rotary cut shavings raw material.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted is: a rotary cut shavings foreign matter sorting device, including a feed conveyor belt, a sorting box, and a discharge conveyor belt, the output end of the feed conveyor belt extends into the top of the sorting box, and the sorting box is provided with a blower and a feed bell arranged relatively, and a screen is also installed at the feed bell; it also includes an induced draft fan, a feed conveying pipe is connected between the inlet end of the induced draft fan and the feed bell, the outlet end of the induced draft fan is also connected to the discharge conveying pipe, and the outlet end of the discharge conveying pipe is connected to the discharge conveyor belt; the bottom of the sorting box is also provided with a foreign matter outlet.

[0006] Furthermore, a scattering roller is installed in the sorting box, and the scattering roller is located below the output end of the feed conveyor belt.

[0007] Furthermore, the scattering roller includes a rotating shaft, which is rotatably installed in the sorting box body, and a scattering piece is installed on the rotating shaft, and the scattering piece has a plurality of scattering teeth.

[0008] Furthermore, the scattering pieces are in multiple groups, and the multiple groups of scattering pieces are evenly spaced apart in the circumferential direction of the rotating shaft. The scattering pieces of two adjacent groups are staggered, and the scattering pieces in the same group are spaced apart in the longitudinal direction.

[0009] Furthermore, the number of the same group of scattering pieces is 4-6, and the distance between two adjacent scattering pieces is 20mm-80mm.

[0010] Furthermore, the upper part of the sorting box, the inlet end of the blower, the inlet end of the induced draft fan, and the foreign matter outlet are all equipped with a spark detection device and a fire sprinkler device.

[0011] Furthermore, the inlet end of the induced draft fan is also equipped with an air door

[0012] Furthermore, the outlet of the blower is higher than the center of the feed bell mouth.

[0013] Furthermore, the sorting box is also provided with a transparent observation window.

[0014] The beneficial effects of the utility model are:

[0015] The blower and the feed bell are arranged relative to each other on the sorting box, and the induced draft fan is connected to the feed bell. During the free fall of the shavings fed through the feed conveyor belt in the sorting box, the rotary cut shavings can smoothly enter the feed bell through the cooperation of the blower and the induced draft fan. When the rotary cut shavings enter the rotary cut bell, they are blocked by the screen, so that foreign matter such as bark and large wood cores in the rotary cut shavings are intercepted, and the intercepted foreign matter such as bark and large wood cores fall to the bottom of the sorting box by their own weight. In addition, when the heavier gravel, equipment parts, etc. in the rotary cut shavings pass between the blower and the feed bell, due to their own gravity, the heavier gravel, equipment parts, etc. will not be affected by the induced draft fan and the blower to enter the feed bell, but will fall to the bottom of the sorting box by their own weight.

[0016] The utility model can screen out foreign matter in the rotary-cut shavings without destroying the shape of the rotary-cut shavings, thereby improving the neatness of the rotary-cut shavings raw material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and are included in and constitute a part of this specification.

[0018] Figure 1 It is a structural schematic diagram of the rotary-cut wood shavings foreign matter sorting device provided by the utility model.

[0019] Markings and corresponding parts names in the accompanying drawings:

[0020] 1. Feed conveyor belt, 2. Sorting box, 3. Breaking roller, 4. Blower, 5. Feed bell mouth, 6. Screen, 7. Feed conveyor pipe, 8. Induced draft fan, 9. Air door, 10. Discharge conveyor pipe, 11. Discharge conveyor belt, 12. Foreign matter outlet, 13. Transparent observation window. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present invention. It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] like Figure 1 As shown, the utility model provides a device for sorting foreign matter from peeled wood chips, comprising a feed conveyor belt 1, a sorting box 2, and a discharge conveyor belt 11. The feed conveyor belt 1 and the discharge conveyor belt 11 are both existing belt conveyors with baffles on both sides, and a window for the feed conveyor belt 1 to pass through is provided at the upper end of the sorting box 2. The output end of the feed conveyor belt 1 passes through the window and extends into the sorting box 2, so that the peeled wood chips transported by the feed conveyor belt 1 can smoothly enter the upper part of the sorting box 2.

[0024] A scattering roller 3 is installed on the upper part of the sorting box 2. The scattering roller 3 is located below the output end of the feed conveyor belt 1, and the width direction of the feed conveyor belt 1 is consistent with the length direction of the scattering roller 3. The end face of the output end of the feed conveyor belt 1 and the central axis of the scattering roller 3 are located on the same vertical plane, so that the peeling shavings sent through the feed conveyor belt 1 can fall accurately on the scattering roller 3, so that the peeling shavings sent through the feed conveyor belt 1 can be scattered by the rotation of the scattering roller 3 and fall downward evenly.

[0025] The scattering roller 3 includes a rotating shaft, both ends of which are rotatably mounted on the sorting box 2 through bearings, and a driving motor (not shown in the figure) and a reducer are installed on the outer wall of the sorting box 2 through a bracket, the output end of the driving motor is connected to the input end of the reducer through a coupling, and the output end of the reducer is connected to one end of the rotating shaft through a coupling, so that the driving motor rotates and the rotating shaft is driven to rotate synchronously at the same time; the rotating shaft is provided with multiple groups of scattering pieces, the scattering pieces are in the shape of pieces, and the scattering pieces have multiple scattering teeth, the scattering teeth are arranged vertically on the surface of the scattering pieces, and the multiple groups of scattering pieces are evenly spaced along the circumferential direction of the rotating shaft, and the multiple scattering pieces in the same group are evenly spaced along the axial direction of the rotating shaft.

[0026] In order to achieve a better scattering effect of the scattering roller 3, two adjacent groups of scattering blades can be arranged in a staggered manner during installation, so that the scattering blades are more evenly distributed on the rotating shaft. In the present utility model, by selecting sheet-shaped scattering blades to scatter the rotary cut shavings, and providing scattering teeth on the scattering blades, it is possible to effectively prevent the scattering blades from damaging the rotary cut shavings during the rotation of the scattering roller 3, so that the quality of the rotary cut shavings can be guaranteed. In order to further reduce the damage to the rotary cut shavings, the scattering blades can be made of plastic material or directly coated with a plastic layer, and the scattering teeth can be made of plastic material or rubber material.

[0027] In the present invention, the number of the plurality of scattering pieces in the same group can be 4-6, and the spacing between two adjacent scattering pieces is 20mm-8n0mm. Specifically, the specific number of the scattering pieces in the same group and the spacing between two adjacent scattering pieces can be selected according to actual conditions. In addition, the number of scattering teeth on the scattering piece is 6, and the 6 scattering teeth are respectively located on both sides of the scattering piece. Specifically, the specific number of scattering teeth on each scattering piece can be selected according to actual conditions.

[0028] A feed bell mouth 5 and a blower 4 are also installed in the middle of the sorting box 2. The blower 4 and the feed bell mouth 5 are arranged relative to each other on the sorting box 2, and the outlet end of the blower 4 corresponds to the opening of the feed bell mouth 5, so that when the blower 4 is running, the wind blown by the blower 4 moves into the feed bell mouth 5. A screen 6 is also installed at the feed bell mouth 5, which separates the feed bell mouth 5 from the interior of the sorting box 2. When the shavings pass between the blower 4 and the feed bell mouth 5, the blower 4 acts to move the shavings into the feed bell mouth 5. Gravel and parts automatically move toward the lower part of the sorting box 2 due to their own gravity. During the process of moving toward the feed bell mouth 5, the shavings are screened by the screen 6. Foreign matter such as bark and large wood cores in the shavings are intercepted in the sorting box 2, while the shavings pass smoothly through the screen 6 into the feed bell mouth 5, thus achieving screening of the shavings. To facilitate installation of the screen 6, the edge of the screen 6 can be directly fixed to the sorting box 2, and the mesh size of the screen 6 can be adjusted according to the size of the shavings.

[0029] The rotary-cut wood shavings foreign matter sorting device also includes an induced draft fan 8, the inlet end of which is connected to the feed bell mouth 5 via a feed conveying pipe 7. A discharge conveying pipe 10 is also installed at the outlet end of the induced draft fan 8, and the outlet end of the discharge conveying pipe 10 is located above the conveying surface of the discharge conveyor belt 11. In the present utility model, the induced draft fan 8 and the blower 4 are started synchronously, so that the rotary-cut wood shavings pass through the screen 6 and enter the feed bell mouth 5 under the action of the blower 4. Then, due to the operation of the induced draft fan 8, the rotary-cut wood shavings entering the feed bell mouth 5 pass through the feed conveying pipe 7, the induced draft fan 8, and the discharge output pipe in sequence, and then enter the discharge conveyor belt 11, and are discharged via the discharge conveyor belt 11.

[0030] In the present invention, in order to prevent the rotary cut shavings from splashing when they are sent out through the discharge conveying pipe 10 and fall onto the discharge conveyor belt 11, on the one hand, the distance between the outlet end of the discharge conveying pipe 10 and the conveying surface of the discharge conveyor belt 11 can be strictly controlled so that the outlet end of the discharge conveying pipe 10 is lower than the height of the baffles on both sides of the discharge conveyor belt 11. On the other hand, a cloth bag can be installed at the outlet end of the discharge conveying pipe 10, and the outlet of the cloth bag can be slightly higher than the conveying surface of the discharge conveyor belt 11 by 3 cm to 8 cm.

[0031] In the present invention, in order to ensure that the sorted bark, large wood cores, equipment parts and other foreign matter can be smoothly sent out from the sorting box 2, the bottom of the sorting box 2 is also provided with a foreign matter outlet 12 and a switch door for opening and closing the foreign matter outlet 12.

[0032] In the present invention, in order to allow the rotary cut shavings to enter the feed bell mouth 5 as much as possible when the blower 4 is in operation, the feed bell mouth 5 is slightly higher than the outlet end of the blower 4, so that the rotary cut shavings are gradually inclined toward the feed bell mouth 5 by the wind of the blower 4 during the downward falling process, and finally pass through the screen 6 and enter the feed bell mouth 5, so that the sorting effect of the rotary cut shavings is better, and the wind of the induced draft fan 8 is prevented from directly acting on the rotary cut shavings and causing the rotary cut shavings to fly everywhere.

[0033] In the present invention, in order to facilitate the adjustment of the suction force of the induced draft fan 8 on the rotary cut shavings, that is, to facilitate the adjustment of the airflow volume for sorting the rotary cut shavings, a damper 9 is also installed at the inlet end of the induced draft fan 8. The damper 9 can directly select an existing valve for controlling gas flow.

[0034] In the present invention, in order to facilitate observation of the sorting situation in the sorting box 2, a transparent observation window 13 is provided on the sorting box 2. The transparent observation window 13 is made of acrylic plate to prevent personal injury caused by splashing of foreign matter passing through the scattering roller 3.

[0035] In the present invention, to prevent fires during the shavings sorting process, spark detection devices and fire sprinkler systems are installed on the upper portion of the sorting box 2, at the inlet of the blower 4, at the inlet of the induced draft fan 8, and at the foreign matter outlet 12. When the spark detection device detects a spark, the fire sprinkler system immediately sprays water, thereby extinguishing the fire. In the present invention, the spark detection device and fire sprinkler system are both existing technologies directly used and will not be described in detail here.

[0036] When the present invention needs to sort the peeling shavings, the feed conveyor belt 1, the drive motor, the blower 4, the induced draft fan 8, and the discharge conveyor belt 11 are started at the same time, and the peeling shavings are fed into the sorting box 2 through the feed conveyor belt 1, and fall onto the scattering roller 3 from the output end of the feed conveyor belt 1; the drive motor drives the reducer to rotate, and the reducer drives the scattering roller 3 to rotate. While the scattering roller 3 is rotating, the peeling shavings that fall onto the scattering roller 3 are scattered, and the scattered peeling shavings move downward by their own gravity. When the peeling shavings enter the blower 4 and the feed horn When the shavings are between the bell mouth 5 and the bell mouth 5, the wind blown by the blower 4 blows the rotary cut shavings toward the feed bell mouth 5. In the process of moving toward the feed bell mouth 5, the rotary cut shavings are screened by the screen 6. At this time, the large shavings, bark, large wood cores, etc. screened out are intercepted in the sorting box 2 and move downward. The mud, gravel, and equipment parts that cannot be blown toward the feed bell mouth 5 also move toward the lower part of the sorting box 2 due to their own weight. Finally, the large shavings, bark, large wood cores, mud, gravel, and equipment parts that fall at the bottom of the sorting box 2 are sent out through the foreign matter outlet 12.

[0037] The peeled shavings entering the feed bell mouth 5 are sucked by the induced draft fan 8, and pass through the feed conveying pipe 7, the induced draft fan 8, and the discharge conveying pipe 10 in sequence to enter the discharge conveyor belt 11, and are finally transported to the next process through the discharge conveyor belt 11.

[0038] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] Those skilled in the art will appreciate that the above embodiments are merely for the purpose of illustrating the present invention and are not intended to limit the scope of the present invention. Other variations or modifications may be made based on the above disclosure, and such variations or modifications are still within the scope of the present invention.

Claims

1. A device for separating foreign matter from peeled wood shavings, characterized in that: The invention comprises a feeding conveyor belt (1), a sorting box (2), and a discharging conveyor belt (11), wherein the output end of the feeding conveyor belt (1) extends into the upper part of the sorting box (2), and the sorting box (2) is provided with a blower (4) and a feeding bell mouth (5) arranged relatively to each other, and a screen (6) is also installed at the feeding bell mouth (5); the invention also comprises an induced draft fan (8), wherein a feeding conveying pipe (7) is connected between the inlet end of the induced draft fan (8) and the feeding bell mouth (5), and the outlet end of the induced draft fan (8) is also connected to a discharging conveying pipe (10), and the outlet end of the discharging conveying pipe (10) is connected to the discharging conveyor belt (11); and a foreign matter outlet (12) is also provided at the bottom of the sorting box (2).

2. The device for separating foreign matter from peeled wood shavings according to claim 1, characterized in that: A scattering roller (3) is also installed in the sorting box (2), and the scattering roller (3) is located below the output end of the feed conveyor belt (1).

3. The device for separating foreign matter from peeled wood shavings according to claim 2, characterized in that: The scattering roller (3) comprises a rotating shaft which is rotatably mounted in the sorting box (2), and a scattering piece is mounted on the rotating shaft, and the scattering piece has a plurality of scattering teeth.

4. The device for separating foreign matter from peeled wood shavings according to claim 3, characterized in that: There are multiple groups of scattering pieces, which are evenly spaced apart in the circumferential direction of the rotating shaft. Two adjacent groups of scattering pieces are staggered, and multiple scattering pieces in the same group are spaced apart in the longitudinal direction.

5. The device for separating foreign matter from peeled wood shavings according to claim 4, characterized in that: The number of scattering pieces in the same group is 4-6, and the distance between two adjacent scattering pieces is 20mm-80mm.

6. The device for separating foreign matter from peeled wood chips according to any one of claims 1 to 5, characterized in that: The upper part of the sorting box (2), the inlet end of the blower (4), the inlet end of the induced draft fan (8), and the foreign matter outlet (12) are all equipped with a spark detection device and a fire sprinkler device.

7. The device for separating foreign matter from peeled wood chips according to any one of claims 1 to 5, characterized in that: The inlet end of the induced draft fan (8) is also equipped with an air damper (9).

8. The device for separating foreign matter from peeled wood chips according to any one of claims 1 to 5, characterized in that: The outlet of the blower (4) is higher than the center of the feed bell mouth (5).

9. The device for separating foreign matter from peeled wood chips according to any one of claims 1 to 5, characterized in that: The sorting box (2) is also provided with a transparent observation window (13).

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