Secondary screening equipment suitable for flaking machine and flaking system

Abstract

The utility model provides secondary screening equipment suitable for a flaking machine. The secondary screening equipment comprises a first screening channel, a first conveying belt and a second screening channel. The first screening channel is arranged between the flaking machine and the wood pulling channel, the first screening channel comprises two first side plates and a plurality of first licker-ins, the two first side plates are oppositely arranged at intervals, and the multiple first licker-ins are sequentially and rotatably arranged on the two first side plates along the axis of the first screening channel. The first conveying belt is arranged below the first screening channel. The second screening channel is connected with the first conveying belt and comprises two second side plates and a plurality of second licker-ins, the second side plates are oppositely arranged at intervals, and the multiple second licker-ins are sequentially and rotatably arranged on the two second side plates along the axis of the second screening channel. And the distance between the multiple second licker-ins is smaller than that between the multiple first licker-ins, so that raw materials falling off from the gaps of the multiple first licker-ins can be screened conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of material screening, in particular to secondary screening equipment and a flaking system suitable for a flaking machine. Background Art

[0002] Before producing artificial boards, various raw materials need to be pre-processed by flaking, crushing and breaking. These raw materials include wood, straw, reeds, etc. They usually contain a lot of stones, soil and the surface of the raw materials. These wastes will cause serious wear on the blades of the flaker, thus seriously affecting the normal operation of the flaker and the quality of the subsequent artificial boards. Therefore, before flaking, the raw materials must be strictly screened.

[0003] Although existing screening equipment can help remove waste from raw materials to a certain extent, it is difficult for existing screening equipment to effectively separate impurities attached to the surface of some raw materials, such as mud, plastic film, bark, etc. These impurities will enter the flaker along with the raw materials, and will still have an adverse effect on the quality of the flaker and the wood-based panels. At the same time, existing screening equipment will screen out a large amount of raw materials that can still be used, resulting in a decrease in the utilization rate of raw materials and an increase in production costs. Utility Model Content

[0004] In order to solve at least one of the technical problems in the prior art, an embodiment of the utility model provides a secondary screening device, which sets up multi-level screening channels to screen materials, effectively separates the processable materials in the raw materials from the surface of the materials and impurities adhered to the surface, which is beneficial to subsequent processing and production.

[0005] An embodiment of the utility model provides a secondary screening device suitable for a flaker, comprising a first screening channel, a first conveyor belt and a second screening channel. The first screening channel is arranged between the above-mentioned flaker and the wood pulling channel, and the above-mentioned first screening channel comprises two first side panels spaced apart and arranged oppositely, and a plurality of first licker-in rollers, and the plurality of first licker-in rollers are rotatably arranged on the two first side panels in sequence along the axis of the above-mentioned first screening channel. The first conveyor belt is arranged below the first screening channel. The second screening channel is connected to the above-mentioned first conveyor belt, and the above-mentioned second screening channel comprises two second side panels spaced apart and arranged oppositely, and a plurality of second licker-in rollers, and the plurality of second licker-in rollers are rotatably arranged on the two second side panels in sequence along the axis of the above-mentioned second screening channel. Among them, the spacing between the plurality of the above-mentioned second licker-in rollers is smaller than the spacing between the plurality of the above-mentioned first licker-in rollers, so as to facilitate the screening of the raw materials dropped from the gaps between the plurality of the above-mentioned first licker-in rollers.

[0006] According to some embodiments of the utility model, the secondary screening equipment also includes a second conveyor belt, which is arranged between the first conveyor belt and the second screening channel. The second conveyor belt is a mesh conveyor belt, which is suitable for separating smaller impurities in the products screened by the first screening channel. The size of the smaller impurities is smaller than the size of the mesh of the second conveyor belt.

[0007] According to some embodiments of the present invention, the above-mentioned smaller impurities include any one or a combination of the following: stones, mud, dust, nails, metal sheets and gravel.

[0008] According to some embodiments of the present invention, the second conveyor belt is a Teflon mesh conveyor belt.

[0009] According to some embodiments of the utility model, the secondary screening device further comprises a third conveyor belt, which is arranged below the second screening channel, and the third conveyor belt is suitable for conveying the filaments in the screened products of the second screening channel to the next process.

[0010] According to some embodiments of the present invention, the filaments include bark.

[0011] According to some embodiments of the utility model, the secondary screening equipment also includes a vibrating screen, which is arranged between the first conveyor belt and the second screening channel. The vibrating screen is suitable for separating smaller impurities in the products screened by the first screening channel, and the size of the smaller impurities is smaller than the size of the screen holes of the vibrating screen.

[0012] According to some embodiments of the utility model, the vibrating screen is arranged obliquely, and the height of the vibrating screen near one end of the first conveyor belt is higher than the height near one end of the second screening channel.

[0013] According to some embodiments of the utility model, the above-mentioned secondary screening equipment also includes a material recovery component, including a fourth conveyor belt, one end of the above-mentioned fourth conveyor belt is connected to the above-mentioned second screening channel, and the other end is connected to the above-mentioned wood pulling channel, for recovering the raw materials screened out by the above-mentioned second screening channel to the above-mentioned wood pulling channel.

[0014] Another aspect of the embodiment of the utility model provides a flaking system, including a flaking machine and the above-mentioned secondary screening device.

[0015] According to the secondary screening equipment of the embodiment of the utility model, a first screening channel and a second screening channel are set, wherein the spacing between the multiple second licker-in rollers of the second screening channel is smaller than the spacing between the multiple first licker-in rollers of the first screening channel, so as to facilitate re-screening of the materials dropped from the gaps between the multiple first licker-in rollers, effectively separate the processable materials in the raw materials from the surface of the materials and the impurities adhered to the surface, thereby improving the utilization rate of the raw materials and facilitating subsequent processing and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a secondary screening device suitable for a flaker according to an exemplary embodiment of the present utility model, with some structures hidden;

[0017] Figure 2 is a top view of a secondary screening device suitable for a flaker according to an exemplary embodiment of the present utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of a vibrating screen suitable for secondary screening equipment of a flaker according to an exemplary embodiment of the utility model.

[0019] In the above drawings, the meanings of the reference numerals are as follows:

[0020] 1-First screening channel;

[0021] 11- first side panel;

[0022] 12- first licker-in;

[0023] 2- first conveyor belt;

[0024] 3- Second screening channel;

[0025] 31- second side plate;

[0026] 32- second licker-in;

[0027] 4- second conveyor belt;

[0028] 5- the third conveyor belt;

[0029] 6-Vibrating screen;

[0030] 7- fourth conveyor belt;

[0031] 8- Flaker; and

[0032] 9- Lamu Passage. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0034] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, the description of the known technology is omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The term "comprising" used herein indicates the existence of features, steps, operations, but does not exclude the existence or addition of one or more other features.

[0036] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0037] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0038] In order to solve the above-mentioned problem, according to the concept of one aspect of the utility model, a first screening channel 1 and a second screening channel 3 are set, wherein the spacing between the multiple second licker-in rollers 32 of the second screening channel 3 is smaller than the spacing between the multiple first licker-in rollers 12 of the first screening channel 1, so as to facilitate re-screening of the materials falling from the gaps between the multiple first licker-in rollers 12, and effectively separate the processable materials in the raw materials from the material surface and impurities adhered to the surface.

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0040] Figure 1 is a three-dimensional structural schematic diagram of a secondary screening device with hidden front side panels according to an exemplary embodiment of the utility model; Figure 2 is a top view of a secondary screening device according to an exemplary embodiment of the present utility model.

[0041] According to the utility model, a secondary screening device suitable for a flaker is provided, such as Figure 1 and Figure 2 As shown, it includes a first screening channel 1, a first conveyor belt 2 and a second screening channel 3. The first screening channel 1 is arranged between the flaker 8 and the wood pulling channel 9, and the first screening channel 1 includes two first side panels 11 spaced apart and oppositely arranged and a plurality of first licker-in rollers 12, and the plurality of first licker-in rollers 12 are rotatably arranged on the two first side panels 11 in sequence along the axis of the first screening channel 1. The first conveyor belt 2 is arranged below the first screening channel 1. The second screening channel 3 is connected to the first conveyor belt 2, and the second screening channel 3 includes two second side panels 31 spaced apart and oppositely arranged and a plurality of second licker-in rollers 32, and the plurality of second licker-in rollers 32 are rotatably arranged on the two second side panels 31 in sequence along the axis of the second screening channel 3. Among them, the spacing between the plurality of second licker-in rollers 32 is smaller than the spacing between the plurality of first licker-in rollers 12, so as to facilitate the screening of the raw materials dropped from the gaps between the plurality of first licker-in rollers 12.

[0042] According to the above-mentioned setting mode, the multiple licker-in rollers of the first screening channel 1 can scrape off part of the epidermis or adhered soil on the surface of the material transmitted by the wood pulling channel 9, and the scraped epidermis or soil falls from the gaps between the licker-in rollers. In this process, some materials whose size is smaller than the spacing between the first licker-in rollers 12 and whose direction is parallel to the axis of the licker-in rollers may fall along the gap to the first conveyor belt 2. The second screening channel 3 receives the above-mentioned fallen materials, and the direction of the fallen materials is likely to change. With the spacing between the multiple second licker-in rollers 32 being smaller than the spacing between the multiple first licker-in rollers 12, the fallen materials will not fall along the gap again, thereby improving the utilization rate of the raw materials. At the same time, the multiple second licker-in rollers 32 can scrape off part of the epidermis or adhered impurities on the surface of the material again, effectively cleaning the epidermis and adhered impurities of the material. The setting of the first side plate 11 and the second side plate 31 can prevent the material from being piled up too high and sliding from the side.

[0043] In an illustrative embodiment, Figure 1 As shown, the flaker 8 is suitable for receiving the material screened by the first screening channel 1 .

[0044] In an optional schematic embodiment, the upper end of the first side plate 11 may be inclined toward the outside of the first screening channel 1 .

[0045] In an optional schematic embodiment, the upper end of the second side plate 31 may be inclined toward the outside of the second screening channel 3 .

[0046] According to the above-mentioned setting method, the space between the inclined side plates at both ends is larger, which can receive more materials and prevent the materials from slipping due to excessive materials.

[0047] In an illustrative embodiment, Figure 1 As shown, the wood pulling channel 9 includes a chain transmission assembly. Optionally, a plurality of chain conveyor lines are arranged in the wood pulling channel 9. Since the materials are mostly raw materials such as branches, wood, bamboo, etc., the uneven surface and pores of the chain conveyor lines can be used to better convey the materials. In addition, the pores of the chain conveyor belt can also facilitate the falling of mud blocks adhered to the surface of the material, thereby reducing the dust generated during the shaving process.

[0048] In an illustrative embodiment, Figure 1 As shown, the secondary screening equipment also includes a second conveyor belt 4, which is arranged between the first conveyor belt 2 and the second screening channel 3. The second conveyor belt 4 is a mesh conveyor belt. The second conveyor belt 4 is suitable for separating smaller impurities in the product screened by the first screening channel 1. The size of the smaller impurities is smaller than the size of the mesh of the second conveyor belt 4.

[0049] In an exemplary embodiment, the smaller impurities include any one or a combination of the following: stones, mud, dust, nails, metal pieces and gravel.

[0050] In an illustrative embodiment, the second conveyor belt 4 is a Teflon mesh conveyor belt.

[0051] According to the above-mentioned setting method, a mesh conveyor belt is selected as the second conveyor belt 4, which can separate smaller impurities smaller than the mesh size in the products screened by the first screening channel 1, and convey the materials screened by the first screening channel 1 to the second screening channel 3. Based on this, the soil, stones, etc. mixed in the waste can be removed, and the waste obtained after the secondary screening can be directly burned as fuel.

[0052] In an alternative illustrative embodiment, optionally, the second conveyor belt 4 also includes a polyester mesh conveyor belt, a nylon mesh conveyor belt, or a polyurethane mesh conveyor belt.

[0053] In an illustrative embodiment, Figure 1 As shown, the secondary screening device also includes a third conveyor belt 5, which is arranged below the second screening channel 3. The third conveyor belt 5 is suitable for conveying the filaments in the screened products of the second screening channel 3 to the next process.

[0054] In an exemplary embodiment, the filaments include tree bark, bamboo bark or other longer plant fibers.

[0055] According to the above-mentioned setting, the second conveyor belt 4 separates impurities in the screened product, and the second screening channel 3 screens the remaining material again, separates the material from the material surface and recycles it, thereby improving the utilization rate of the raw materials.

[0056] Figure 3 It is a schematic diagram of the three-dimensional structure of the vibrating screen of the secondary screening equipment according to the exemplary embodiment of the utility model.

[0057] In an illustrative embodiment, Figure 3 As shown, the secondary screening equipment also includes a vibrating screen 6, which is arranged between the first conveyor belt 2 and the second screening channel 3. The vibrating screen 6 is suitable for separating smaller impurities in the screened product of the first screening channel 1, and the size of the smaller impurities is smaller than the size of the screen holes of the vibrating screen 6.

[0058] In an illustrative embodiment, the vibrating screen 6 is arranged at an angle, and the height of the vibrating screen 6 near one end of the first conveyor belt 2 is higher than the height of the vibrating screen 6 near one end of the second screening channel 3 .

[0059] According to the above-mentioned setting method, the height of the vibrating screen 6 near one end of the first conveyor belt 2 is higher than the height near one end of the second screening channel 3. By vibrating the first screening channel 1, smaller impurities smaller than the grid size in the screened product fall along the screen holes, and the remaining materials are vibrated to the second screening channel 3.

[0060] In an illustrative embodiment, Figure 1 As shown, the secondary screening equipment also includes a material recovery component, including a fourth conveyor belt 7, one end of the fourth conveyor belt 7 is connected to the second screening channel 3, and the other end is connected to the wood pulling channel 9, so as to recover the raw materials screened by the second screening channel 3 to the wood pulling channel 9.

[0061] According to the above arrangement, the material screened by the second screening channel 3 is transported again through the wood pulling channel 9 and finally transported to the flaker 8. The material screened by the first screening channel 1 can be recycled.

[0062] On the other hand, the embodiment of the utility model provides a flaking system, including a flaker 8 and a secondary screening device. By setting a first screening channel 1 and a second screening channel 3, wherein the spacing between the multiple second licker-in rollers 32 of the second screening channel 3 is smaller than the spacing between the multiple first licker-in rollers 12 of the first screening channel 1, the materials dropped from the gaps between the multiple first licker-in rollers 12 can be screened again, effectively separating the processable materials from the surface of the materials and the impurities adhering to the surface, thereby improving the utilization rate of the raw materials. At the same time, the second conveyor belt 4 or the vibrating screen 6 can be set to remove impurities from the materials screened by the first screening channel 1, thereby retaining useful raw materials. A third conveyor belt 5 and a fourth conveyor belt 7 are further set to separately transport the different materials screened by the second screening channel 3 for recycling. The system effectively improves the utilization rate of the raw materials.

[0063] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0064] It should also be noted that, in the specific embodiments of the present invention, unless otherwise indicated, the numerical parameters in this specification and the attached claims are approximate values ​​and can be changed according to the desired characteristics obtained through the content of the present invention. Specifically, all numbers used in the specification and claims to express the size, range conditions, etc. of the composition should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression refers to the change of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments by a specific number.

[0065] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0066] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A secondary screening device suitable for a flaker, characterized in that: include: A first screening channel (1) is arranged between the flaker (8) and the wood pulling channel (9), and the first screening channel comprises: Two first side plates (11) spaced apart and arranged opposite to each other; A plurality of first licker-in rollers (12) are rotatably arranged on the two first side plates in sequence along the axis of the first screening channel; A first conveyor belt (2) is arranged below the first screening channel; A second screening channel (3) is connected to the first conveyor belt, and the second screening channel comprises: two second side plates (31) spaced apart and arranged opposite to each other; A plurality of second licker-in rollers (32) are rotatably arranged on the two second side plates in sequence along the axis of the second screening channel; Wherein, the spacing between the plurality of the second licker-in rollers is smaller than the spacing between the plurality of the first licker-in rollers, so as to facilitate screening of the raw materials dropped from the gaps between the plurality of the first licker-in rollers.

2. The secondary screening device according to claim 1, characterized in that: Also includes: A second conveyor belt (4) is arranged between the first conveyor belt and the second screening channel. The second conveyor belt is a mesh conveyor belt. The second conveyor belt is suitable for separating smaller impurities in the product screened by the first screening channel. The size of the smaller impurities is smaller than the size of the mesh of the second conveyor belt.

3. The secondary screening device according to claim 2, characterized in that: The smaller impurities include any one or a combination of the following: stones, mud, dust, nails, metal pieces and gravel.

4. The secondary screening device according to claim 2, characterized in that: The second conveyor belt is a Teflon mesh conveyor belt.

5. The secondary screening device according to claim 2, characterized in that: Also includes: A third conveyor belt (5) is arranged below the second screening channel, and the third conveyor belt is suitable for conveying the filaments in the products screened by the second screening channel to the next process.

6. The secondary screening device according to claim 5, characterized in that: The filaments include bark.

7. The secondary screening device according to claim 2, characterized in that: Also includes: A vibrating screen (6) is arranged between the first conveyor belt and the second screening channel, and the vibrating screen is suitable for separating smaller impurities in the product screened by the first screening channel, wherein the size of the smaller impurities is smaller than the size of the screen holes of the vibrating screen.

8. The secondary screening device according to claim 7, characterized in that: The vibrating screen is arranged obliquely, and the height of the vibrating screen close to one end of the first conveyor belt is higher than the height of the vibrating screen close to one end of the second screening channel.

9. The secondary screening device according to claim 1, characterized in that: Also includes: The material recovery component comprises a fourth conveyor belt (7), one end of the fourth conveyor belt is connected to the second screening channel, and the other end is connected to the wood pulling channel, so as to recover the raw materials screened by the second screening channel to the wood pulling channel.

10. A flaking system, characterized in that: include: Flaker (8); as well as A secondary screening device as claimed in any one of claims 1 to 9.

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