Sawdust conveying and filtering system

Abstract

The utility model relates to the technical field of wood processing, in particular to a sawdust conveying and filtering system which comprises a first screening device, a conveying belt, a drying device, a conveying device and a second screening device. The first screening device is used for roughing saw dust; the two ends of the conveying belt are connected with the output end of the first screening device and the input end of the conveying device respectively, a drying device is arranged on the conveying belt and located between the first screening device and the conveying device, and the roughly-selected sawdust is dried through the drying device; the output end of the conveying device is connected with the input end of the second screening device, the conveying device can convey saw dust to the second screening device in a spiral conveying mode, and the second screening device can finely select the dried saw dust. The saw dust conveying device can solve the problem that blockage is prone to occurring in the saw dust spiral conveying process.

Description

TECHNICAL FIELD

[0001] The utility model relates to timber processing technical field, concretely relates to a sawdust conveying filtering system. BACKGROUND

[0002] The main raw material of the shaving board is wood, in the process of processing the log or wood scraps into appropriate size shavings, the wood cutting equipment (such as shaving machine, chipper, etc.) will inevitably produce some small wood powder particles when cutting and planing the wood, and these wood powder particles form sawdust.

[0003] The patent with the application number CN202221308390.5 discloses an automatic powder filtering device for sawdust three remaining resource production, which automatically conveys the sawdust to the filtering box through the conveying auger (screw conveyor), realizes automatic feeding and stopping of the sawdust, and automatically removes the impurities filtered, thereby reducing the labor intensity, but since the sawdust is cut from wood, the cell structure of wood is retained, and there are a large number of pores and capillaries inside, so it is easy to attract moisture in the air in humid weather, resulting in increased viscosity, and if the auger (screw conveyor) is directly used for conveying, the sawdust is easy to stick to the spiral blade and the inner wall of the machine shell, causing blockage. UTILITARIAN CONTENT

[0004] Therefore, the utility model aims to provide a sawdust conveying filtering system to solve the problem of easy blockage in the process of spiral conveying sawdust.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A sawdust conveying filtering system, comprising a first screening device, a conveyor belt, a drying device, a conveying device and a second screening device; the first screening device is used for rough screening of sawdust; the conveyor belt is connected to the output end of the first screening device and the input end of the conveying device at both ends respectively, the drying device is arranged between the first screening device and the conveying device on the conveyor belt, and the drying device is used for drying the rough screened sawdust; the output end of the conveying device is connected to the input end of the second screening device, the conveying device can convey the sawdust to the second screening device by spiral conveying, and the second screening device can fine screen the dried sawdust.

[0007] As a further scheme of the utility model: wherein, the first screening device is a drum screen, and the second screening device is a vibrating screen.

[0008] As a further scheme of the utility model: wherein, the drying device is a drying chamber.

[0009] As a further scheme of the utility model: wherein, the conveying device includes the casing, motor and spiral blade, the casing both ends are equipped with feed inlet and discharge gate respectively, the motor sets up in the casing outer side connects the spiral blade to drive the spiral blade rotation, the spiral pitch of spiral blade gradually increases from the feed inlet to the discharge gate.

[0010] As a further scheme of the utility model: wherein, the feed inlet is equipped with the rotary fan blade, the feed inlet is equipped with the drive motor, the drive motor connects the rotary fan blade to drive the rotary fan blade rotation.

[0011] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0012] 1. before the conveying device screw conveys sawdust to the second screening device and carries out fine selection, removes the large impurities in sawdust through the rough selection of the first screening device, and conveys the sawdust after impurity removal to the drying device through the conveying belt and carries out drying, so as to reduce the risk of blockage when the conveying device is screw conveyed from the source of material, and also facilitate the further screening of the second screening device.

[0013] Compared with the prior art, the utility model carries out rough selection and drying on sawdust before screw conveying sawdust for filtering, prevents the blockage in the process of screw conveying sawdust by the conveying device, and improves the production efficiency.

[0014] 2. in the process that sawdust enters the conveying device, the sawdust is scattered by the rotation of the rotary fan blade, which further prevents the blockage of the conveying device, and the pitch of the spiral blade gradually increases from the feed inlet to the discharge gate, which can reduce the accumulation of sawdust in the feed inlet, facilitate the discharge of sawdust in the discharge gate, and effectively reduce the possibility of blockage when the conveying device is screw conveyed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0016] Figure 1 The structure diagram of the sawdust conveying and filtering system described in the embodiments of the utility model;

[0017] Figure 2 The structure diagram of the conveying device described in the embodiments; Figure 1 The structure diagram of the conveying device described in the embodiments;

[0018] Figure 3 for Figure 1 A schematic diagram of the conveying device described in the embodiment at the feed inlet in the conveying direction.

[0019] The correspondence between the labels and component names in the attached figures is as follows:

[0020] 1. First screening device; 2. Conveyor belt; 3. Drying device; 4. Conveying device; 41. Machine casing; 411. Feed inlet; 412. Discharge outlet; 42. Electric motor; 43. Spiral blades; 5. Second screening device; 61. Rotating fan blades; 62. Drive motor. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0022] Please refer to Figure 1 In one embodiment of the sawdust conveying and filtering system of this utility model, the sawdust conveying and filtering system includes a first screening device 1, a conveyor belt 2, a drying device 3, a conveying device 4, and a second screening device 5.

[0023] The first screening device 1 is used to coarsely select sawdust; the two ends of the conveyor belt 2 are respectively connected to the output end of the first screening device 1 and the input end of the conveying device 4. A drying device 3 is set on the conveyor belt 2 between the first screening device 1 and the conveying device 4 to dry the coarsely selected sawdust; the output end of the conveying device 4 is connected to the input end of the second screening device 5. The conveying device 4 can convey the sawdust to the second screening device 5 by spiral conveying. The second screening device 5 can finely select the dried sawdust.

[0024] In this embodiment, before the damp sawdust enters the conveying device 4, it is first screened by the first screening device 1 to remove large impurities, preventing blockage of the subsequent conveyor belt 2 and conveying device 4 during the conveying process, and facilitating further screening by the second screening device 5; the conveyor belt 2 is less prone to blockage when conveying sawdust, and a slower speed can be used to prevent sawdust from flying; the drying device 3 dries the sawdust to prevent it from being too sticky and causing blockage when the conveying device 4 is conveyed by a screw conveyor; the second screening device 5 further screens out large-sized unwanted materials from the sawdust.

[0025] As a preferred embodiment, the first screening device 1 can be a drum screen, and the second screening device 5 can be a vibrating screen. Both the drum screen and the vibrating screen are existing screening devices. The drum screen relies on the rotation of the cylinder to make the material continuously turn and roll in the cylinder. The fine particles of the material fall through the screen hole to the screen below, and the coarse particles of the material are discharged from the other end of the cylinder to complete the screening process, which is suitable for screening materials with low precision requirements. The vibrating screen relies on the rotation of the cylinder to make the material continuously turn and roll in the cylinder. The fine particles of the material fall through the screen hole to the screen below, and the coarse particles of the material are discharged from the other end of the cylinder to complete the screening process, which is suitable for screening materials with high precision requirements. Of course, the first screening device 1 and the second screening device 5 can also use other existing screening devices, as long as they are suitable for sawdust and meet the screening requirements.

[0026] As a preferred embodiment, the drying device 3 can be set as a drying chamber. The drying chamber is an existing device for removing moisture from the material. It can provide a relatively stable drying environment and accurately control the temperature, humidity, ventilation and other parameters according to the characteristics of the sawdust and the drying requirements to meet the drying needs of the sawdust. Of course, the drying device 3 can also use other existing drying devices, as long as they are suitable for sawdust and meet the drying requirements.

[0027] As a preferred embodiment, as shown in Figure 2 , the conveying device 4 includes a housing 41, a motor 42 and a spiral blade 43. The housing 41 has an inlet 411 and an outlet 412 at both ends respectively. The motor 42 is arranged outside the housing 41 and connected to the spiral blade 43 to drive the spiral blade 43 to rotate. The sawdust enters the housing 41 from the inlet 411 and is discharged from the outlet 412 under the conveying of the rotating spiral blade 43. The spiral blade 43 is in the form of a strip, and the pitch of the spiral blade 43 gradually increases from the inlet 411 to the outlet 412. In this way, at the inlet end, the smaller pitch can make the sawdust be pushed quickly, increase the conveying speed of the sawdust and reduce the accumulation of the sawdust at the inlet 411. At the outlet 412, the larger pitch can make the sawdust have more space to spread out, which facilitates discharge and effectively reduces the possibility of blockage.

[0028] On this basis, as shown in Figure 2 and Figure 3As shown, a rotating fan blade 61 can also be arranged in the feed inlet 411, the axial direction of the rotating fan blade 61 being perpendicular to the axial direction of the feed inlet 411, and the two sides of the rotating fan blade 61 being close to the inner side walls of the feed inlet 411, respectively; a driving motor 62 is fixedly arranged outside the feed inlet 411, and the type of the driving motor 62 can be a stepping motor; the output shaft of the driving motor 62 is coaxially connected with the rotating fan blade 61 through the side wall of the feed inlet 411 to drive the rotating fan blade 61 to rotate, and the rotating fan blade 61 can scatter the sawdust in blocks before the sawdust enters the machine shell 41, thereby further preventing blockage, and at the same time, the rotation speed of the rotating fan blade 61 can be controlled by adjusting the rotation speed of the driving motor 62, so as to prevent the sawdust from being fed too much and too fast, so that the material can be kept in a stable conveying state in the machine, and the risk of blockage is reduced.

[0029] The use method or working principle of the utility model is as follows:

[0030] The damp sawdust first enters the first screening device 1, and the large impurities are screened out by the first screening device 1, and then the sawdust enters the conveying belt 2 from the first screening device 1 and is conveyed to the drying device 3 through the conveying belt 2 to be dried, so that the dry sawdust without impurities is obtained, thereby reducing the risk of blockage when the conveying device 4 performs spiral conveying from the material source; the sawdust after drying enters the machine shell 41 from the feed inlet 411, and in the falling process of the sawdust at the feed inlet 411, the sawdust in blocks is scattered by the rotating fan blade 61, thereby further preventing blockage; after the sawdust enters the machine shell 41, the sawdust is conveyed forward by the rotating spiral blade 43, and since the pitch of the spiral blade 43 gradually increases from the feed inlet 411 to the discharge outlet 412, the accumulation of the sawdust at the feed inlet 411 can be reduced, and the sawdust can be conveniently discharged at the discharge outlet 412, thereby effectively reducing the possibility of blockage; finally, the sawdust enters the second screening device 5 from the discharge outlet 412, and the material with a large particle size that is not needed in the sawdust is further screened out, so that the sawdust with a particle size and purity meeting the requirements is obtained.

[0031] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A sawdust conveying and filtering system, characterized in that, The system includes a first screening device (1), a conveyor belt (2), a drying device (3), a conveying device (4), and a second screening device (5). The first screening device (1) is used to coarsely select sawdust. The two ends of the conveyor belt (2) are respectively connected to the output end of the first screening device (1) and the input end of the conveying device (4). The drying device (3) is set on the conveyor belt (2) between the first screening device (1) and the conveying device (4) to dry the coarsely selected sawdust. The output end of the conveying device (4) is connected to the input end of the second screening device (5). The conveying device (4) can convey the sawdust to the second screening device (5) by means of a spiral conveyor. The second screening device (5) can finely select the dried sawdust.

2. The sawdust conveying and filtering system according to claim 1, characterized in that, The first screening device (1) is a drum screen, and the second screening device (5) is a vibrating screen.

3. The sawdust conveying and filtering system according to claim 1, characterized in that, The drying device (3) is a drying chamber.

4. The sawdust conveying and filtering system according to claim 1, characterized in that, The conveying device (4) includes a housing (41), a motor (42), and a spiral blade (43); the housing (41) has an inlet (411) and an outlet (412) at both ends; the motor (42) is located on the outside of the housing (41) and connected to the spiral blade (43) to drive the spiral blade (43) to rotate; the pitch of the spiral blade (43) gradually increases from the inlet (411) to the outlet (412).

5. The sawdust conveying and filtering system according to claim 4, characterized in that, The feed inlet (411) is provided with a rotating fan blade (61), and a drive motor (62) is provided outside the feed inlet (411). The drive motor (62) is connected to the rotating fan blade (61) to drive the rotating fan blade (61) to rotate.

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