Light-weight high-efficiency wood chip swinging screen

Abstract

The utility model discloses a light-weight high-efficiency wood chip swinging sieve, which relates to the technical field of papermaking and comprises a rack and a sieve body, the sieve body is obliquely arranged on the rack, and a first sieve plate, a second sieve plate and a third sieve plate are sequentially arranged in the sieve body from top to bottom; wherein meshes of the first screen plate are larger than those of the second screen plate, meshes of the second screen plate are larger than those of the third screen plate, when the screen body screens wood chips, the first screen plate located on the upper layer screens out overlarge chips, the second screen plate screens out qualified chips, the third screen plate screens chippings, and finally the screening results are overlarge chips, qualified chips and chippings. And the screening effect is improved. In addition, a plurality of scrap treatment plates are arranged below the third sieve plate, and scrap materials are conveyed and collected.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking, in particular to a lightweight and high-efficiency wood chip swing screen. Background Art

[0002] At present, the paper and wood-based panel industry has continuously improved the quality requirements of finished paper and wood-based panel products, and thus has also put forward higher requirements on the quality of raw materials (wood chips). Before the wood chips enter the pulp, they need to be screened to remove unqualified wood chips and impurities to ensure product quality.

[0003] In the related art, a swing screen is generally used to screen wood chips, but the swing screen in the related art is mostly made of steel plates, which has a large weight, high cost and low screening efficiency.

[0004] Therefore, the utility model provides a lightweight and high-efficiency wood chip swing screen to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a lightweight and high-efficiency wood chip swing screen, which has a compact structure, higher efficiency and lower cost.

[0006] According to the first embodiment of the utility model, the lightweight high-efficiency wood chip swing screen comprises a frame and a screen body, wherein the screen body is tiltedly arranged on the frame, and a first screen plate, a second screen plate and a third screen plate are arranged in sequence from top to bottom in the screen body;

[0007] The mesh openings of the first sieve plate are larger than those of the second sieve plate, and the mesh openings of the second sieve plate are larger than those of the third sieve plate; a plurality of debris processing plates are arranged below the third sieve plate.

[0008] The lightweight and high-efficiency wood chip swing screen according to the embodiment of the utility model has at least the following beneficial effects:

[0009] By arranging sieve plates with different apertures in layers in the sieve body, when the sieve body screens the wood chips, the first sieve plate on the upper layer screens out oversized pieces, the second sieve plate screens out qualified pieces, and the third sieve plate screens the debris. The final screening results are oversized pieces, qualified pieces and debris, which improves the screening effect. At the same time, the debris processing plate arranged under the third sieve plate can transport and collect the debris, which is convenient for cleaning.

[0010] According to some embodiments of the present invention, the debris handling plate is bent.

[0011] According to some embodiments of the utility model, the debris handling plate is made of PVC material. The debris material itself has poor mobility. PVC generates vibrations during the screening process, which can help transport the debris material. At the same time, the debris handling plate made of PVC material is easy to replace and has a low cost.

[0012] According to some embodiments of the present invention, a feed hopper and a discharge hopper are respectively provided at both ends of the sieve body.

[0013] According to some embodiments of the present invention, the position of the feed hopper is higher than that of the discharge hopper.

[0014] According to some embodiments of the utility model, a main shaft is provided in the middle of the frame, and the main shaft passes through the screen body.

[0015] According to some embodiments of the utility model, eccentric blocks are provided at both ends of the main shaft, and the motor drives the main shaft to rotate. The eccentric blocks at both ends of the main shaft rotate, causing the screen body to vibrate. At this time, wood chips enter the screen body from the feed hopper. Under the amplitude vibration, the wood chips pass through the first screen plate, the second screen plate and the third screen plate in turn, thereby completing the screening.

[0016] According to some embodiments of the present invention, the sieve body is made of bent sheet metal.

[0017] According to some embodiments of the present invention, the inclination angle of the sieve body is 8-15°.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 This is the overall structure diagram of a lightweight and high-efficiency wood chip swing screen;

[0021] Figure 2 This is the internal structure diagram of a lightweight and efficient wood chip swing screen.

[0022] In the figure: 1. screen body; 2. frame; 3. main shaft; 4. first screen plate; 5. second screen plate; 6. third screen plate; 7. debris processing plate; 8. feed hopper; 9. discharge hopper. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figure 1-2 A lightweight and efficient wood chip swing screen includes a frame 2 and a screen body 1. The screen body 1 is tilted on the frame 2. The first screen plate 4, the second screen plate 5 and the third screen plate 6 are arranged in sequence from top to bottom in the screen body 1; wherein the mesh of the first screen plate 4 is larger than the mesh of the second screen plate 5, and the mesh of the second screen plate 5 is larger than the mesh of the third screen plate 6. When the screen body 1 screens the wood chips, the first screen plate 4 located on the upper layer screens out the oversized pieces, the second screen plate 5 screens out the qualified pieces, and the third screen plate 6 screens the debris. The final screening results are oversized pieces, qualified pieces and debris, which improves the screening effect. In addition, a plurality of debris processing plates 7 are arranged below the third screen plate 6 to transport and collect the debris.

[0028] In order to more effectively guide and collect the debris, in this embodiment, the debris processing plate 7 is bent so that the debris can be more easily accumulated at the bend, which is convenient for collection and cleaning.

[0029] Preferably, the debris handling plate 7 is made of PVC. The debris material itself has poor mobility. The debris handling plate 7 made of PVC can generate vibrations, which helps to improve the mobility of the debris material. In addition, the debris handling plate 7 made of PVC is easier to replace and has a lower cost. It is lighter than steel plates, which helps to reduce the overall weight of the equipment.

[0030] In this embodiment, a feed hopper 8 and a discharge hopper 9 are respectively provided at both ends of the screen body 1. The first screen plate 4, the second screen plate 5 and the third screen plate 6 can be extended and laid into the feed hopper 8 and the discharge hopper 9 to expand the screening area, thereby improving the screening efficiency.

[0031] Specifically, the position of the feed hopper 8 is higher than that of the discharge hopper 9, which is beneficial to the natural flow and screening process of the wood chips and further improves the screening efficiency.

[0032] Preferably, a main shaft 3 is provided in the middle of the frame 2, the main shaft 3 passes through the screen body 1, and eccentric blocks are respectively provided at the upper and lower ends of the main shaft 3. The main shaft 3 is driven to rotate by a motor, and the rotation of the main shaft 3 drives the eccentric blocks to rotate, and the eccentric blocks are all in contact with the screen body 1, and the screen body 1 generates an amplitude, thereby realizing the screening process of wood chips and improving the screening efficiency.

[0033] Furthermore, the screen body 1 is made of bent sheet metal, and the bent sheet metal has the characteristics of stable structure and strong durability, which improves the service life and stability of the equipment.

[0034] Preferably, the inclination angle of the screen body 1 is 8-15°. After reasonable design, the wood chips can pass through each layer of the screen plate smoothly during the screening process, thereby improving the screening efficiency.

[0035] The present invention is limited only by the claims and their full scope and equivalents. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A lightweight and high-efficiency wood chip swing screen, comprising a frame (2) and a screen body (1), characterized in that: The sieve body (1) is arranged obliquely on the frame (2), and a first sieve plate (4), a second sieve plate (5) and a third sieve plate (6) are arranged in sequence from top to bottom in the sieve body (1); The mesh openings of the first sieve plate (4) are larger than the mesh openings of the second sieve plate (5), and the mesh openings of the second sieve plate (5) are larger than the mesh openings of the third sieve plate (6); a plurality of debris processing plates (7) are provided below the third sieve plate (6).

2. A lightweight and high-efficiency wood chip swing screen according to claim 1, characterized in that: The debris processing plate (7) is arranged in a curved manner.

3. The lightweight and high-efficiency wood chip swing screen according to claim 2 is characterized in that: The debris processing plate (7) is made of PVC.

4. The lightweight and high-efficiency wood chip swing screen according to claim 1 is characterized in that: A feed hopper (8) and a discharge hopper (9) are respectively provided at both ends of the sieve body (1).

5. The lightweight and high-efficiency wood chip swing screen according to claim 4 is characterized in that: The position of the feed hopper (8) is higher than the position of the discharge hopper (9).

6. The lightweight and high-efficiency wood chip swing screen according to claim 1 is characterized in that: A main shaft (3) is provided in the middle of the frame (2), and the main shaft (3) passes through the screen body (1).

7. The lightweight and high-efficiency wood chip swing screen according to claim 6 is characterized in that: Both ends of the main shaft (3) are provided with eccentric blocks.

8. The lightweight and high-efficiency wood chip swing screen according to claim 1 is characterized in that: The sieve body (1) is made of bent sheet metal.

9. The lightweight and high-efficiency wood chip swing screen according to claim 1 is characterized in that: The inclination angle of the sieve body (1) is 8-15°.

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