A wood shavings impurity removal air separator

Abstract

The invention relates to the technical field of artificial board processing equipment, and specifically discloses a wood shavings impurity removal and air separation machine, comprising a chassis, a screen drum, a feeding device and a discharging device, the screen drum is rotatably arranged in the upper end opening of the chassis, the feeding device is arranged along the central axis of the screen drum and extends into the inner cavity of the screen drum, a first vertical partition and a second vertical partition are arranged in the chassis below the screen drum, and the chassis is divided into a high-density material area, a low-density material area and an impurity collection area from left to right under the action of the first vertical partition and the second vertical partition, the screen drum comprises a cylinder body and end plates sealing both ends of the cylinder body, a plurality of strip openings are evenly opened on the cylinder body, sieve holes are arranged on the cylinder body between two adjacent strip openings, and an arc-shaped sealing plate is arranged on the outer side of the strip opening through a rotating shaft; the wood shavings impurity removal and air separation structure disclosed by the invention is compactly designed, realizes the functions of screening and impurity removal of wood shavings and wind screening, and has a better treatment effect when used for damp wood shavings.

Description

Technical Field

[0001] The invention relates to the technical field of artificial board processing equipment, and in particular discloses a wind separator which can screen and remove impurities from wood shavings and simultaneously perform screening according to water content. Background Art

[0002] Wood chips are the main raw material of artificial boards, which are made from wood processed by a chipper. At present, artificial board manufacturers will place the purchased or processed wood chips in an open warehouse, but in the rainy season, the wood chips are prone to moisture due to the high water content in the air, and the wood chips are also prone to be mixed with some gravel and sand.

[0003] For damp shavings, manufacturers often directly send the shavings into the dryer for drying without distinction, and then use the dried shavings directly. Some shavings that are severely damp are difficult to dry completely, while some shavings that are not damp will damage their internal fibers during the high-temperature drying process, affecting the quality of the final prepared artificial board. For such situations, manufacturers need to use a wind separator to screen the shavings according to their density, and then dry the shavings of different densities (i.e., different water contents) separately. After drying, a sieve machine is also needed to remove the gravel and sand mixed in the shavings before putting them into use. The entire screening pre-treatment process requires the use of a wind separator and a sieve machine, which not only greatly increases the equipment cost of the enterprise, but also requires the transfer of the shavings to the sieve machine after screening and drying, resulting in cumbersome shaving pre-treatment steps. Therefore, in view of the shortcomings of existing manufacturers that need to use a wind separator and a sieve machine to air-select and remove impurities from shavings, the present application proposes a shavings impurity removal wind separator that can integrate impurity removal and air selection. Summary of the invention

[0004] The present invention aims to provide a shavings impurity removal air separator to solve the shortcomings of the existing need to use an air separator and a screen to air separate and remove impurities from shavings, which leads to increased equipment costs and complicated pre-treatment of shavings.

[0005] The present invention is achieved through the following technical solutions:

[0006] A wood shavings impurity removal air separator, comprising a chassis, a screen drum, a feeding device and a discharging device, wherein the screen drum is rotatably arranged in the upper end opening of the chassis, the feeding device is arranged to extend into the inner cavity of the screen drum along the central axis of the screen drum, a first vertical partition and a second vertical partition are arranged in the chassis below the screen drum, and the chassis is divided into a high-density material area, a low-density material area and an impurity collection area from left to right under the action of the first vertical partition and the second vertical partition, one end of the discharging device is arranged in the high-density material area and the low-density material area, and the other end is arranged to extend out of the chassis;

[0007] The sieve drum comprises a drum body and end plates sealing both ends of the drum body, a plurality of strip openings are evenly provided on the drum body, a sieve hole is provided on the drum body between two adjacent strip openings, an arc-shaped sealing plate is provided on the outer side of the strip openings through a rotating shaft, both ends of the rotating shaft are arranged through the end plates, and a torsion spring is provided at the rotating connection of the rotating shaft, a material storage groove protruding toward the inside of the drum body is provided at one end of the inner side surface of the arc-shaped sealing plate, and the material storage groove is opened toward one end of the inner side surface of the arc-shaped sealing plate, and an opening and closing assembly for realizing the opening of the arc-shaped sealing plate is provided at the end of the rotating shaft and above the second vertical partition plate;

[0008] An air guide hood is fixed in the chassis, one end of the air guide hood is connected to a blower, and a wind guide plate arranged toward the screen drum and acting on the shavings during the falling process is connected to the slit position at the lower end of the air guide hood.

[0009] As a further configuration of the above scheme, the opening and closing assembly includes a gear connected to the end of the rotating shaft and an arcuate rack fixed on the inner wall of the chassis. The arcuate rack is concentrically arranged with the screen drum and meshes with the gear during the rotation of the screen drum.

[0010] As a further configuration of the above scheme, the opening and closing assembly includes an end wheel connected to the end of the rotating shaft and an arc-shaped magnet fixed on the inner wall of the chassis, and a permanent magnet is arranged on the side end of the end wheel away from the central axis of the cylinder body, and the polarity of the inner end of the arc-shaped magnet facing the end wheel is the same as the polarity of the outer end of the permanent magnet.

[0011] As a further configuration of the above solution, the sector angle of the arc-shaped magnet is set between 10-45°.

[0012] As a further arrangement of the above scheme, bearing seats are fixed on both the front and rear sides of the upper opening of the chassis, and hollow rotating shafts and drive shafts connected to corresponding bearings are respectively arranged at the centers of the two end plates, and the ends of the drive shafts are connected to rotating drive devices.

[0013] As a further configuration of the above scheme, the feeding device includes a silo, a conveying cylinder, a feeding auger blade and a feeding motor. The conveying cylinder extends into the inner cavity of the cylinder body along the diameter of the hollow rotating shaft, the silo is connected to the outer end of the conveying cylinder, the feeding auger blade is arranged in the conveying cylinder and the feeding motor is connected to the feeding auger blade, and a discharge port is opened on the conveying cylinder located inside the cylinder body, and a downward inclined discharge guide plate is connected to the position of the discharge port. Beneficial Effects

[0014] The impurity-removing air separator for shavings disclosed in the present invention first screens and removes impurities from the shavings discharged into the sieve drum through the rotation of the sieve drum, so that the mixed gravel and sand can fall into the impurity collection area, and then after the shavings pass through the lowest end of the sieve drum, they are gathered into the arc-shaped sealing plate and the storage trough as the sieve drum rotates. When the arc-shaped sealing plate rotates to the position of the opening and closing component, the arc-shaped sealing plate is opened outwardly under the action of the opening and closing component. At this time, the shavings originally located in the arc-shaped sealing plate and the storage trough will slide downward along the arc-shaped sealing plate, and then be screened by the action of the airflow during the falling process of the shavings, so that the shavings can be blown to the high-density material area and the low-density material area respectively according to their density for collection; the entire shavings impurity-removing air separator for shavings has a compact structure design, realizes the functions of screening and impurity removal of shavings and wind screening of shavings, and has a better treatment effect when used for damp shavings.

[0015] The shavings impurity removal and air separation machine disclosed in the present invention adopts a traditional screen drum as a basis, and then improves and designs it, and combines the function of an opening and closing component arranged between a machine case and a rotating shaft, so that the shavings can be automatically lifted up as the screen drum rotates after being screened and impurities removed in the screen drum, and then the arc-shaped sealing plate can be automatically opened after reaching the opening and closing component to realize the external discharge and falling of the shavings, and then the shavings are air-selected during the falling process; the structural design of the screen drum in the entire shavings impurity removal and air separation machine is novel, and the conveying, screening and impurity removal and external discharge and air separation of the shavings can be realized only through the rotation of one screen drum, and its use effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure from a second angle of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the screen drum in Example 1 of the present invention;

[0020] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the arc-shaped sealing plate, the material storage tank, etc. in the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the chassis, feeding device, etc. in the present invention;

[0023] Figure 7 It is a schematic diagram of the planar structure inside the chassis of the present invention;

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the screen drum in Example 2 of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 8 , and describes the application in detail with reference to embodiments. Example 1

[0027] Embodiment 1 discloses a wood shavings impurity removal air separator, see attached Figure 1 and attached Figure 2 The main body thereof comprises a machine case 1, a screen drum 2, a feeding device 3, a discharging device 4 and a blower 5. The screen drum 2 is rotatably connected to the upper end opening of the machine case 1, and a rotary driving device 6 is arranged at one end of the screen drum 2. Then, the feeding device 3 is extended from the other end of the screen drum 2 along its axis into the inner cavity of the screen drum 2.

[0028] Reference Figure 3 , Attachment Figure 4 and attached Figure 5 The sieve drum 2 includes a barrel 201 and an end plate 202, and the two end plates 202 are respectively fixedly connected to the front and rear ends of the barrel 201 to seal it. Multiple groups of sieve holes 203 are evenly arranged on the barrel 201, and the aperture of the sieve holes 203 is smaller than the size of the wood shavings, so that the crushed stones and sand in the wood shavings can be screened under the action of the sieve holes 203. Then, a strip opening 204 is opened on the barrel 201 between each two adjacent groups of sieve holes 203, and the strip opening 204 is arranged along the axial direction of the barrel 201.

[0029] An arc-shaped sealing plate 205 is arranged on the outside of each strip-shaped opening 204 through a rotating shaft 206, and the rotating shaft 206 is arranged through the end plate 202. At the same time, a torsion spring 207 is arranged on the rotating shaft 206 between the arc-shaped sealing plate 205 and the end plate 202, so that the arc-shaped sealing plate 205 can be attached to the cylinder body 201 outside the strip-shaped opening 204 under the action of the torsion spring 207, thereby sealing the strip-shaped opening 204. Then, a material storage groove 208 protruding toward the inside of the cylinder body 201 is arranged at one end of the inner side surface of the arc-shaped sealing plate 205, and the material storage groove 208 is arranged to open at one end of the inner side surface of the arc-shaped sealing plate 205, and a gear 209 is connected to the outer end of the rotating shaft 206 extending out of the end plate 202.

[0030] The bearing seats 101 are fixedly arranged at both the front and rear ends of the upper opening of the chassis 1, and then a hollow rotating shaft 210 connected to the front end bearing seat 101 is arranged at the center of the front end plate 202, and a driving shaft 211 is arranged at the center of the rear end plate 202, and the driving shaft 211 is rotatably connected to the rear end bearing seat 101, and then the driving shaft 211 is connected to the rotary drive device 6. The specific rotary drive device 6 includes a driving motor 601, a driving wheel 602, a driven wheel 603 and a transmission belt 604, the driven wheel 603 is connected to the outer end of the driving shaft 211, the driving wheel 602 is connected to the motor shaft of the driving motor 601, and then the transmission belt 604 is arranged between the driving wheel 602 and the driven wheel 603, so that the entire screen drum 2 can slowly rotate in the upper opening of the chassis 1 under the action of the driving motor 601.

[0031] Reference Figure 6 and attached Figure 7 The feeding device 3 includes a fixing frame 301, a silo 302 and a conveying cylinder 303. The silo 302 is connected to the upper surface of the end of the conveying cylinder 303, and the fixing frame 301 is fixedly welded to the front side of the chassis 1. Then, the lower surface of the end of the conveying cylinder 303 is fixedly welded to the upper end of the fixing frame 301, and the conveying cylinder 303 is extended into the inner cavity of the cylinder body 201 along the hollow rotating shaft 210. A feeding auger blade is arranged in the cylinder body 201, and a feeding motor 304 for driving the auger blade is arranged on the outer end surface of the cylinder body 201. A discharge port is opened at the right end of the conveying cylinder 303 located in the inner cavity of the cylinder body 201, and a downwardly inclined material discharge guide plate 305 is connected at the position of the discharge port. When the shavings are loaded, the shavings are sent to the silo 302 by the elevator, and then the feeding motor 304 is started, so that the shavings enter the inner cavity of the cylinder body 201 along the conveying cylinder 303 under the action of the driving auger blade, and then fall into the lower right end of the inner cavity of the cylinder body 201 through the discharge port and along the discharge guide plate 305.

[0032] A first vertical partition 102 is provided on the bottom wall of the chassis 1, and the first vertical partition 102 is located directly below the center line of the screen drum 2, and then a second vertical partition 103 is provided on the bottom wall of the chassis 1 on the left side of the first vertical partition 102. Under the action of the first vertical partition 102 and the second vertical partition 103, the chassis 1 is divided into a high-density material area, a low-density material area and an impurity collection area from left to right. Discharge ports are provided on the front side of the lower end of the chassis 1 in the high-density material area and the low-density material area, and then the feeding device 3 is extended out of the chassis 1 along the discharge port. The specific discharge device 3 can be a belt conveyor, and one end of the belt conveyor is extended into the high-density material area and the low-density material area, and the other end is extended out of the chassis 1 along the discharge port.

[0033] An air guide cover 104 is fixed on the top wall of the upper left end of the chassis 1, and an air outlet slit is opened at the lower end of the air guide cover 104, and then an air guide plate 105 bent toward the screen drum 2 is connected to the air guide cover 104 at the position of the air outlet slit, and the air guide plate 105 is located above the high-density material area. An air guide duct 501 is connected to the air outlet of the blower 5, and the end of the air guide duct 501 is extended into the chassis 1 and connected to the air guide cover 104.

[0034] An arc-shaped rack 106 which is concentrically arranged with the sieve drum 2 is fixedly welded on the inner wall of the chassis 1 above the second vertical partition 103, and during the rotation of the sieve drum 2, the gears 209 at the front and rear ends of the same arc-shaped sealing plate 205 will engage with the arc-shaped rack 106, so that the arc-shaped sealing plate 205 overcomes the force of the torsion spring to open the strip mouth 204. At this time, the wood shavings falling from the arc-shaped sealing plate 205 can be air-selected and partitioned under the action of the airflow.

[0035] Finally, in order to facilitate the cleaning of debris, sand and other debris in the impurity collection area, a cleaning port connected to the impurity collection area is opened at the lower end of the chassis 1, and a gate 107 is arranged on the cleaning port.

[0036] During the operation of the impurity removal air separator for shavings disclosed in the present embodiment 1, the driving auger blade is driven to rotate in the conveying cylinder 303 by the action of the feed motor 304, and then the shavings in the silo 302 are conveyed to the inner cavity of the screen cylinder 2 under the action of the driving auger blade, and then the shavings will pass through the discharge port and fall into the lower right end of the inner cavity of the cylinder body 201 along the discharge guide plate 305. The fallen shavings will roll down along the inner wall of the cylinder body 201 between two adjacent arc-shaped sealing plates 205, and the gravel and sand in the shavings will be removed under the action of the sieve hole 203, and then the shavings will roll down and accumulate in the storage trough 208 at the end of the lower arc-shaped sealing plate 205.

[0037] When the arc-shaped sealing plate 205 rotates past the lowest end and starts to rotate downward, the wood shavings will roll into the inner cavity of the arc-shaped sealing plate 205 and the storage trough 208 at the rear under the action of gravity, and then be lifted up by the arc-shaped sealing plate 205 and the storage trough 208.

[0038] When the arc-shaped sealing plate 205 rotates to the position of the arc-shaped rack 106 and meshes with it, the arc-shaped sealing plate 205 and the storage trough 208 rotate outward, and the strip opening 204 is opened at this time, and then the shavings will slide down along the arc-shaped sealing plate 205, and in the process of sliding, they will be affected by the airflow introduced by the air guide plate 105, wherein the shavings with high moisture content and high density will be smaller under the action of the airflow and will fall into the high-density material area, while the shavings with low moisture content and low density will be larger under the action of the airflow and will fall into the low-density material area. Finally, the discharge device 4 in the high-density material area and the low-density material area will send the air-selected shavings out of the chassis 1 along two different paths for independent collection. Example 2

[0039] Embodiment 2 discloses a specific solution designed based on the technical solution in Embodiment 1 to realize automatic opening of the arc-shaped sealing plate 205 for discharge and air separation.

[0040] The similarities between Example 2 and Example 1 are not described again. Figure 8 In this embodiment 2, an end wheel 212 is connected to the outer end of the rotating shaft 206 extending out of the end plate 202, and a permanent magnet is fixedly provided on the side end of the end wheel 212 away from the central axis of the barrel 201.

[0041] At the same time, an arc magnet 213 is fixedly welded on the inner wall of the chassis 1 above the second vertical partition 103 and is arranged concentrically with the screen drum 2. The polarity of the arc magnet 213 toward the center of the circle is the same as the polarity of the outer end of the permanent magnet. During the rotation of the screen drum 2, when the arc sealing plate 205 rotates to approach the arc magnet 213, the arc magnet 213 can repel the permanent magnet on the end wheel 212, so that the end wheel 212 can overcome the torsion spring 207 and rotate, thereby causing the arc sealing plate 205 to rotate to open the strip mouth 204, and then in the process of continuing to rotate, the arc sealing plate 205 will remain in an open state for discharge due to the magnetic force. Finally, it should be noted that in this embodiment, the sector angle of the arc magnet 213 can be set between 10-45°. When the sector angle of the arc magnet 213 is larger, the arc sealing plate 205 will remain in an open state for a longer time, so that the internal shavings can be effectively discharged.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wood shavings impurity removal air separator, It is characterized in that It includes a chassis, a screen drum, a feeding device and a discharging device, wherein the screen drum is rotatably arranged in the upper opening of the chassis, the feeding device is arranged along the central axis of the screen drum and extends into the inner cavity of the screen drum, a first vertical partition and a second vertical partition are arranged in the chassis below the screen drum, and the chassis is divided into a high-density material area, a low-density material area and an impurity collection area from left to right under the action of the first vertical partition and the second vertical partition, one end of the discharging device is arranged in the high-density material area and the low-density material area, and the other end is arranged outside the chassis; The sieve drum comprises a drum body and end plates sealing both ends of the drum body, a plurality of strip openings are evenly provided on the drum body, a sieve hole is provided on the drum body between two adjacent strip openings, an arc-shaped sealing plate is provided on the outer side of the strip openings through a rotating shaft, both ends of the rotating shaft are arranged through the end plates, and a torsion spring is provided at the rotating connection of the rotating shaft, a material storage groove protruding toward the inside of the drum body is provided at one end of the inner side surface of the arc-shaped sealing plate, and the material storage groove is opened toward one end of the inner side surface of the arc-shaped sealing plate, and an opening and closing assembly for realizing the opening of the arc-shaped sealing plate is provided at the end of the rotating shaft and above the second vertical partition plate; An air guide hood is fixed in the chassis, one end of the air guide hood is connected to a blower, and a wind guide plate arranged toward the screen drum and acting on the shavings during the falling process is connected to the slit position at the lower end of the air guide hood.

2. The wood shavings impurity removal winnowing machine according to claim 1, It is characterized in that The opening and closing assembly includes a gear connected to the end of the rotating shaft and an arc-shaped rack fixed on the inner wall of the chassis. The arc-shaped rack is arranged concentrically with the screen drum and meshes with the gear during the rotation of the screen drum.

3. The wood shavings impurity removal air separator according to claim 1, It is characterized in that The opening and closing assembly includes an end wheel connected to the end of the rotating shaft and an arc-shaped magnet fixed on the inner wall of the chassis. A permanent magnet is arranged on the side end of the end wheel away from the central axis of the cylinder body. The polarity of the inner end of the arc-shaped magnet facing the end wheel is the same as the polarity of the outer end of the permanent magnet.

4. The wood shavings impurity removal winnowing machine according to claim 3, It is characterized in that The sector angle of the arc magnet is set between 10-45°.

5. The wood shavings impurity removal winnowing machine according to claim 1, It is characterized in that Bearing seats are fixed on both the front and rear sides of the upper opening of the chassis, and a hollow rotating shaft and a driving shaft connected to corresponding bearings are respectively arranged at the center of the two end plates, and the end of the driving shaft is connected to a rotating driving device.

6. The wood shavings impurity removal winnowing machine according to claim 5, It is characterized in that The feeding device includes a silo, a conveying cylinder, a feeding auger blade and a feeding motor. The conveying cylinder extends into the inner cavity of the cylinder body along the diameter of the hollow rotating shaft. The silo is connected to the outer end of the conveying cylinder. The feeding auger blade is arranged in the conveying cylinder and the feeding motor is connected to the feeding auger blade. A discharge port is opened on the conveying cylinder located inside the cylinder body, and a downwardly inclined discharge guide plate is connected to the position of the discharge port.

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