A raw material light-heavy impurity separation system for artificial board production

Abstract

This utility model discloses a light and heavy impurity separation system for raw materials used in the production of engineered wood products. It includes a separation chamber mounted on a frame, a first screw conveyor installed on one side of the top wall of the separation chamber, an air supply pipe connected to the air outlet, the input end of the air supply pipe connected to the output end of a blower, an impurity collection hopper and a raw material collection hopper connected to the bottom wall of the separation chamber, a collection hood installed at the top opening of the separation chamber, a guide pipe connected to the top opening of the collection hood, and the output end of the guide pipe connected to the input end of a cyclone separator. The beneficial effects of this utility model are: by introducing airflow into the separation chamber through a blower, the non-wood reed raw materials fed into the separation chamber can be dispersed, thereby quickly separating the light and heavy impurities mixed in with the non-wood reed raw materials, avoiding damage to subsequent engineered wood production equipment caused by these impurities, and improving the production quality of engineered wood products.

Description

Technical fields:

[0001] This utility model belongs to the field of artificial board production, and in particular relates to a light and heavy impurity separation system for raw materials used in artificial board production. Background technology:

[0002] Technology and production lines for producing engineered wood products using non-timber reed raw materials such as reeds and crop straw are springing up like mushrooms after rain. This resource-saving alternative industry, using non-timber resources to replace natural forest timber in engineered wood production, is becoming a trend. Non-timber materials originate from vast lands, rivers, lakes, and wetlands. These materials have two main characteristics that pose challenges to engineered wood production: first, during harvesting, they often contain heavy impurities such as mud, sand, and pebbles brought into the soil; second, non-crop straw often contains a large amount of light impurities such as flowers and leaves. Heavy impurities can damage engineered wood production equipment and cutting tools used in the cutting process of engineered wood furniture production, while light impurities can seriously affect the performance of the boards and production costs. Therefore, both types of impurities must be removed. Summary of the Invention:

[0003] The purpose of this invention is to provide a system for separating light and heavy impurities in raw materials for the production of engineered wood products, and to overcome the shortcomings of the prior art, which effectively solves the existing problem of separating impurities from non-wood raw materials.

[0004] The present invention relates to a system for separating light and heavy impurities in raw materials for the production of engineered wood products. The system includes a separation chamber mounted on a frame. A first screw conveyor is installed on the top wall of one side of the separation chamber, and the output end of the first screw conveyor is connected to the separation chamber. An air vent is provided on the side wall of the separation chamber, located below the output end of the first screw conveyor. An air supply pipe is connected to the air vent, and the input end of the air supply pipe is connected to the output end of a blower. An impurity collection hopper and a raw material collection hopper are connected to the bottom wall of the separation chamber, with the impurity collection hopper located below the output end of the first screw conveyor. A collection hood is fitted at the top opening of the separation chamber, and a guide pipe is connected at the top opening of the collection hood. The output end of the guide pipe is connected to the input end of a cyclone separator.

[0005] Furthermore, a branch pipe is connected to the air supply pipe, and the output end of the branch pipe is inclined upward and connected to the side wall of the raw material collection hopper.

[0006] Furthermore, a distribution plate is provided between the impurity collection hopper and the raw material collection hopper, and the distribution plate is installed on the bottom wall of the separation chamber.

[0007] Furthermore, several baffles are arranged side by side at equal intervals in the inner cavity of the collection hood, and the two ends of the baffles are fixedly connected to the inner wall of the collection hood.

[0008] Furthermore, an observation window is provided on the collection cover, and a sealed transparent plate is installed on the observation window.

[0009] Furthermore, a return air duct is connected to the top air outlet of the cyclone separator, and the output end of the return air duct is connected to the input end of the fan.

[0010] Furthermore, the bottom output ends of the impurity collection hopper and the raw material collection hopper are respectively connected to the input ends of the second screw conveyor and the third screw conveyor.

[0011] Furthermore, an adjustable damper is installed on the air outlet.

[0012] The beneficial effects of this utility model are as follows: By introducing airflow into the separation chamber through a fan, the non-wood reed raw materials put into the separation chamber can be blown apart, thereby realizing the rapid separation of light and heavy impurities mixed in the non-wood reed raw materials, avoiding damage to subsequent artificial board production equipment caused by these impurities, and improving the production quality of artificial boards. Attached image description:

[0013] Figure 1 This is an overall structural view of the present invention;

[0014] Figure 2 This is a left view of the separation chamber in this utility model.

[0015] In the diagram, 1 is the separation chamber, 2 is the first screw conveyor, 3 is the air supply pipe, 4 is the fan, 5 is the impurity collection hopper, 6 is the raw material collection hopper, 7 is the collection cover, 8 is the guide pipe, 9 is the cyclone separator, 10 is the branch pipe, 11 is the distribution plate, 12 is the baffle plate, 13 is the observation window, 14 is the return air pipe, 15 is the second screw conveyor, 16 is the third screw conveyor, and 17 is the regulating damper. Detailed implementation method:

[0016] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings:

[0017] like Figures 1 to 2As shown, a light and heavy impurity separation system for raw materials used in the production of engineered wood panels includes a separation chamber 1 mounted on a frame. A first screw conveyor 2 is installed on the top wall of one side of the separation chamber 1, and the output end of the first screw conveyor 2 is connected to the separation chamber 1. An air vent is provided on the side wall of the separation chamber 1, located below the output end of the first screw conveyor 2. An air supply pipe 3 is connected to the air vent, and the input end of the air supply pipe 3 is connected to the output end of a blower 4. An impurity collection hopper 5 and a raw material collection hopper 6 are connected to the bottom wall of the separation chamber 1. The impurity collection hopper 5 is located below the output end of the first screw conveyor 2. A collection cover 7 is installed at the top opening of the separation chamber 1. A guide pipe 8 is connected to the top opening of the collection cover 7. The output end of the guide pipe 8 is connected to the input end of the cyclone separator 9. A branch pipe 10 is connected to the air supply pipe 3. The output end of the branch pipe 10 is inclined upward and connected to the side wall of the raw material collection hopper 6. The bottom output ends of the impurity collection hopper 5 and the raw material collection hopper 6 are respectively connected to the input ends of the second screw conveyor 15 and the third screw conveyor 16.

[0018] Specifically, airflow is introduced into separation chamber 1 by fan 4, so that the non-woody reed material put into separation chamber 1 can be blown apart, thereby separating the light and heavy impurities mixed in the non-woody reed material.

[0019] In actual use, non-timber reed materials are evenly fed into the inner cavity of separation chamber 1 by the first screw conveyor 2. At this time, the fan 4, which is in operation, introduces airflow into separation chamber 1 through air supply pipe 3. When the horizontally blown airflow meets the freely falling non-timber reed materials, the airflow disperses the non-timber reed materials as a whole, separating impurities such as mud, sand, pebbles, flowers, and leaves from the non-timber reed materials. At this time, heavy impurities such as mud, sand, and pebbles fall naturally into the impurity collection hopper 5 below under the action of gravity, while the relatively lighter non-timber reed materials are blown to the outer material collection hopper 6. During this process, the branch pipe 10 supplements part of the airflow from air supply pipe 3 into the material collection hopper at an upward angle. In bucket 6, the two airflows are tangential, causing the non-woody reed material initially entering the upper part of the raw material collection bucket 6 to be agitated and tumbled in the separation chamber 1, further separating the non-woody reed material from impurities such as flowers and leaves. The relatively lighter impurities such as flowers and leaves are sucked into the collection hood 7 installed above the separation chamber 1 by the suction generated by the operation of the cyclone separator 9, and finally sucked into the cyclone separator 9 through the guide pipe 8 for gas-solid separation. The second screw conveyor 15 and the third screw conveyor 16 transport the corresponding separated heavy impurities such as mud, sand and stones, as well as qualified non-woody reed material, away to avoid accumulation in the corresponding buckets. The cyclone separator 9 is existing technology and will not be described in detail here.

[0020] like Figures 1 to 2As shown, a light and heavy impurity separation system for raw materials used in the production of engineered wood panels includes a distribution plate 11 installed between the impurity collection hopper 5 and the raw material collection hopper 6, the distribution plate 11 being mounted on the bottom wall of the separation chamber 1; several baffles 12 arranged side by side in the inner cavity of the collection hood 7, the two ends of the baffles 12 being fixedly connected to the inner wall of the collection hood 7; an observation window 13 being provided on the collection hood 7; a return air pipe 14 being connected to the top air outlet output end of the cyclone separator 9, the output end of the return air pipe 14 being connected to the input end of the blower 4; and an adjusting damper 17 being installed on the air outlet.

[0021] Specifically, the flow direction of impurities such as flowers and leaves can be changed by the baffle 12, causing them to collide with the baffle 12, thereby separating the remaining qualified non-woody reed raw materials from the impurities such as flowers and leaves, which facilitates the efficient separation of qualified non-woody reed raw materials.

[0022] In actual use, the distribution plate 11 can further expand the collection range of the impurity collection hopper 5; the several side-by-side baffles 12 allow impurities such as flowers and leaves to collide with the impurities during their upward flow, so that the residual non-woody reed material adhering to the impurities can be further separated. Since this residual non-woody reed material is heavier than the impurities such as flowers and leaves, it will fall into the raw material collection hopper 6, while the lighter impurities such as flowers and leaves will still be sucked into the cyclone separator 9 for subsequent gas-solid separation. Therefore, this process further improves the separation and recovery of qualified non-woody reed material. According to the different colors of non-woody reed material, the blowing angle and blowing effect of the material can be changed by adjusting the angle of the damper 5, so that the blown material is better separated under the action of airflow. The return air pipe 14 can return the airflow separated by the cyclone separator 9 to the blower 4 for use, thereby realizing the circulation of airflow used in the system, further stabilizing the system air pressure, and making the operation of the raw material light and heavy impurity separation system safer and more stable.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A system for separating light and heavy impurities in raw materials used in the production of engineered wood panels, characterized in that: The system includes a separation chamber (1) mounted on a frame. A first screw conveyor (2) is installed on the top wall of one side of the separation chamber (1). The output end of the first screw conveyor (2) is connected to the separation chamber (1). An air vent is provided on the side wall of the separation chamber (1). The air vent is located below the output end of the first screw conveyor (2). An air supply pipe (3) is connected to the air vent. The input end of the air supply pipe (3) is connected to the output end of a blower (4). An impurity collection hopper (5) and a raw material collection hopper (6) are connected to the bottom wall of the separation chamber (1). The impurity collection hopper (5) is located below the output end of the first screw conveyor (2). A collection cover (7) is installed at the top opening of the separation chamber (1). A guide pipe (8) is connected at the top opening of the collection cover (7). The output end of the guide pipe (8) is connected to the input end of a cyclone separator (9).

2. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 1, characterized in that: A branch pipe (10) is connected to the air supply pipe (3), and the output end of the branch pipe (10) is inclined upward and connected to the side wall of the raw material collection hopper (6).

3. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 1, characterized in that: A distribution plate (11) is provided between the impurity collection hopper (5) and the raw material collection hopper (6), and the distribution plate (11) is installed on the bottom wall of the separation chamber (1).

4. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 1, characterized in that: Several baffles (12) are arranged side by side at equal intervals in the inner cavity of the collection hood (7), and the two ends of the baffles (12) are fixedly connected to the inner wall of the collection hood (7).

5. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 4, characterized in that: An observation window (13) is provided on the collection cover (7), and a sealed transparent plate is installed on the observation window (13).

6. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 1, characterized in that: A return air pipe (14) is connected to the top air outlet of the cyclone separator (9), and the output end of the return air pipe (14) is connected to the input end of the fan (4).

7. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 1, characterized in that: The bottom output ends of the impurity collection hopper (5) and the raw material collection hopper (6) are respectively connected to the input ends of the second screw conveyor (15) and the third screw conveyor (16).

8. The light and heavy impurity separation system for raw materials used in the production of engineered wood panels according to claim 1, characterized in that: An adjustable damper (17) is installed on the air outlet.

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