Wood shaving drying multi-stage screening device

Abstract

The utility model discloses a wood shaving drying multistage screening device which comprises an inclined drum screen and a dust hood, the drum screen is rotatably installed in the dust hood, a hot air pipe extending into the drum screen is installed on the dust hood, screen holes are formed in the middle of the drum screen, and spiral material guiding pieces corresponding to the screen holes are arranged on the inner ring of the drum screen. The wood shaving raw material drying device has the advantages that wood shaving raw materials are screened by arranging the rotary screen, the wood shaving raw materials enter the rotary screen through the feeding pipe, the wood shaving raw materials of the rotary screen can stably and spirally move along with the spiral material guiding piece when the rotary screen rotates by arranging the spiral material guiding piece, and the drying effect is improved; screened wood shavings are discharged through the first discharging pipe, sawdust and dust fall into the second discharging pipe under the screening effect of the drum screen, the dust can be sucked in through the negative pressure fan under negative pressure and enters external dust removal equipment through the dust removal pipeline for dust removal, the sawdust is discharged and collected along with the second discharging pipe, and therefore the sawdust can be effectively recycled.

Description

Technical Field

[0001] This utility model relates to the field of wood shavings drying technology, and in particular to a multi-stage screening device for drying wood shavings. Background Technology

[0002] Wood shavings have a wide range of uses; after being crushed, they can be used to make high-pressure wood panels. High-pressure wood panels made from wood shavings and sawdust are widely used in the production of furniture. During the wood shavings production process, sawdust is usually produced alongside the shavings. my country is a country with underdeveloped forestry resources, but sawdust can actually be used to develop many products beneficial to people's production and lives. Nowadays, many people have realized this, and the utilization of sawdust has been developed. However, existing wood shavings drying equipment usually sieves out the sawdust and dust together during the drying process, failing to effectively recover the sawdust from the wood shavings, leading to a waste of sawdust resources. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing wood shaving drying equipment, which usually screen out sawdust and dust together during the wood shaving drying process, and cannot effectively recover sawdust from the wood shavings, resulting in waste of sawdust resources. This invention provides a multi-stage screening device for wood shaving drying.

[0004] The purpose of this utility model is achieved through the following technical solution: a multi-stage shaving device for drying wood shavings, including an inclined drum screen and a dust removal hood. The drum screen is rotatably installed inside the dust removal hood. A hot air pipe extending into the drum screen is installed on the dust removal hood. The drum screen has a screen hole in the middle and a spiral guide plate corresponding to the screen hole is set in the inner ring of the drum screen. The wood shavings are sieved by setting the drum screen. The wood shavings enter the drum screen through the feed pipe. The spiral guide plate can make the wood shavings move steadily in a spiral with the spiral guide plate when the drum screen rotates, thereby improving the drying effect. The sieved wood shavings are discharged through the first discharge pipe. Wood shavings and dust fall into the second discharge pipe under the sieving action of the drum screen.

[0005] The drum screen is equipped with a first discharge pipe and a feed pipe on both sides, corresponding to the dust removal hood. A second discharge pipe is installed on the bottom surface of the dust removal hood. A negative pressure fan is installed on the side wall of the second discharge pipe. The outlet of the negative pressure fan is connected to the external dust removal equipment through the dust removal pipe. The negative pressure fan can draw dust in under negative pressure and enter the external dust removal equipment through the dust removal pipe for dust removal. The sawdust is discharged and collected through the second discharge pipe, which can effectively recycle the sawdust and avoid further waste of resources.

[0006] A further technical solution is that the air inlet of the dust removal pipe is connected to the side wall of the second discharge pipe, and a first filter screen is installed at the air inlet of the dust removal pipe. By setting the first filter screen, other impurities such as sawdust are prevented from entering the negative pressure fan and causing damage to the negative pressure fan, thus providing a certain degree of protection for the negative pressure fan.

[0007] A further technical solution is to place the hot air pipe in the middle of the drum screen, and to open multiple sets of air outlets in a circular array on the hot air pipe. By placing the hot air pipe on the central axis of the drum screen and cooperating with the air outlets on the hot air pipe, the hot air can be evenly used to dry the wood shavings on the drum screen, effectively improving the drying efficiency of the equipment.

[0008] A further technical solution is to install a second filter screen inside the air outlet of the hot air duct. Setting up a second filter screen can prevent wood shavings from entering the hot air duct, which would not only waste materials but also potentially clog the air outlet of the hot air duct and reduce the drying efficiency of the equipment.

[0009] A further technical solution involves using a spiral guide plate arranged in a spiral shape on the inner wall of the drum screen. The cross-section of the spiral guide plate is pointed, which effectively guides the wood shavings, allowing them to move stably within the drum screen. The pointed cross-section of the spiral guide plate also helps to break up any clumps of wood shavings as they are tumbled within the drum screen, further improving the drying efficiency of the equipment.

[0010] A further technical solution is that the bottom surface of the dust collector is provided with an inclined part corresponding to the second discharge pipe. The inclined part on the bottom surface of the dust collector allows sawdust and dust to enter the second discharge pipe quickly, while preventing sawdust and dust from remaining in the dust collector.

[0011] A further technical solution is to install an insulation layer on the outer surface of the dust collector hood. The insulation layer is made of extruded polystyrene board. By using extruded polystyrene board as the insulation layer, the heat preservation efficiency of the drum screen can be improved, heat dissipation can be avoided, heat energy can be saved, and drying efficiency can be improved. At the same time, it has corrosion resistance and super anti-aging properties, which can effectively improve the service life of the equipment.

[0012] This invention has the following advantages: By setting up a drum screen to screen wood shavings, the wood shavings enter the drum screen through the feed pipe. The spiral guide plate allows the wood shavings to move steadily in a spiral motion as the drum screen rotates, improving the drying effect. The screened wood shavings are discharged through the first discharge pipe, while sawdust and dust fall into the second discharge pipe under the screening action of the drum screen. A negative pressure fan can suck the dust in under negative pressure and send it through a dust removal pipe to an external dust removal device for dust removal, while the sawdust is discharged and collected through the second discharge pipe, thus enabling effective recycling of sawdust and avoiding further waste of resources. Attached Figure Description

[0013] Figure 1 This is a schematic cross-sectional view of the present invention;

[0014] Figure 2 This is a cross-sectional view of the drum screen of this utility model;

[0015] Figure 3 For the present utility model Figure 1 Enlarged schematic diagram of structure A in the middle;

[0016] In the diagram, 1 is a drum screen; 2 is a dust collector hood; 3 is a hot air duct; 4 is a first discharge pipe; 5 is a second discharge pipe; 6 is a negative pressure fan; 7 is a dust removal duct; 8 is a first filter screen; 9 is a feed pipe; 10 is a spiral guide plate; 11 is a second filter screen; and 12 is a thermal insulation layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1-3As shown, a multi-stage shaving device for drying wood shavings includes an inclined drum screen 1 and a dust collector 2. The drum screen 1 is rotatably installed inside the dust collector 2. A hot air pipe 3 extending into the drum screen 1 is installed on the dust collector 2. The drum screen 1 has sieve holes in its middle, and a spiral guide plate 10 corresponding to the sieve holes is provided on the inner ring of the drum screen 1. The drum screen 1 is used to sieve the wood shavings. The wood shavings enter the drum screen 1 through the feed pipe 9. The spiral guide plate 10 enables the wood shavings in the drum screen 1 to move stably in a spiral motion with the spiral guide plate 10 when the drum screen 1 rotates, improving the drying effect. The sieved wood shavings pass through the first... The discharge pipe 4 discharges the sawdust and dust, which fall into the second discharge pipe 5 under the screening action of the drum screen 1. The drum screen 1 is equipped with a first discharge pipe 4 and a feed pipe 9 corresponding to the dust hood 2 on both sides. The bottom surface of the dust hood 2 is equipped with the second discharge pipe 5. A negative pressure fan 6 is installed on the side wall of the second discharge pipe 5. The air outlet of the negative pressure fan 6 is connected to the external dust removal equipment through the dust removal pipe 7. The negative pressure fan 6 can draw the dust into the external dust removal equipment through the dust removal pipe 7 for dust removal, while the sawdust is discharged and collected with the second discharge pipe 5, so that the sawdust can be effectively recycled and reused, avoiding further waste of resources.

[0024] The air inlet of the dust removal pipe 7 is connected to the side wall of the second discharge pipe 5. A first filter screen 8 is installed at the air inlet of the dust removal pipe 7. The first filter screen 8 is installed to prevent sawdust and other impurities from entering the negative pressure fan 6 and causing damage to the negative pressure fan 6, thus providing a certain degree of protection for the negative pressure fan 6. The hot air pipe 3 is located in the middle of the drum screen 1, and multiple sets of air outlet holes in a circular array are opened on the hot air pipe 3. By setting the hot air pipe 3 on the central axis of the drum screen 1 and cooperating with the air outlet holes on the hot air pipe 3, the hot air can be evenly used to dry the wood shavings on the drum screen 1, effectively improving the drying efficiency of the equipment. A second filter screen 11 is installed in each air outlet hole on the hot air pipe 3. The second filter screen 11 can prevent wood shavings from entering the hot air pipe 3, which would not only waste materials but also block the air outlet holes on the hot air pipe 3 and reduce the drying efficiency of the equipment.

[0025] The spiral guide plate 10 is spirally arranged on the inner wall of the drum screen 1. The cross-section of the spiral guide plate 10 is pointed. By setting the spiral guide plate 10 in a spiral shape, the material of wood shavings can be effectively guided, so that the material of wood shavings can move stably in the drum screen 1. At the same time, the pointed cross-section of the spiral guide plate 10 means that the pointed part of the spiral guide plate 10 can break up some of the clumped wood shavings as the material of wood shavings is turned over by the drum screen 1, thereby further improving the drying efficiency of the equipment.

[0026] The bottom surface of the dust collector hood 2 is provided with an inclined part corresponding to the second discharge pipe 5. The inclined part of the bottom surface of the dust collector hood 2 allows sawdust and dust to quickly enter the second discharge pipe 5, while preventing sawdust and dust from remaining in the dust collector hood 2. The outer surface of the dust collector hood 2 is provided with a heat insulation layer 12, which is made of extruded polystyrene board. By using extruded polystyrene board as the material for the heat insulation layer 12, the heat insulation efficiency of the drum screen 1 can be improved, heat dissipation can be avoided, heat energy can be saved, and drying efficiency can be improved. At the same time, it has corrosion resistance and super anti-aging properties, which can effectively improve the service life of the equipment.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage sieving device for drying wood shavings, comprising an inclined drum screen (1) and a dust collection hood (2), wherein the drum screen (1) is rotatably installed inside the dust collection hood (2), characterized in that: The dust removal hood (2) is equipped with a hot air pipe (3) extending into the drum screen (1). The drum screen (1) has a screen hole in the middle and a spiral guide plate (10) corresponding to the screen hole is provided on the inner ring of the drum screen (1). The drum screen (1) is equipped with a first discharge pipe (4) and a feed pipe (9) corresponding to the dust hood (2) on both sides respectively. The bottom surface of the dust hood (2) is equipped with a second discharge pipe (5). A negative pressure fan (6) is installed on the side wall of the second discharge pipe (5). The air outlet of the negative pressure fan (6) is connected to the external dust removal equipment through the dust removal pipe (7).

2. The multi-stage sieving device for drying wood shavings according to claim 1, characterized in that: The air inlet of the dust removal pipe (7) is connected to the side wall of the second discharge pipe (5), and the air inlet of the dust removal pipe (7) is equipped with a first filter screen (8).

3. The multi-stage sieving device for drying wood shavings according to claim 2, characterized in that: The hot air pipe (3) is located in the middle of the drum screen (1), and the hot air pipe (3) has multiple sets of air outlets arranged in a circular array.

4. The multi-stage sieving device for drying wood shavings according to claim 1, characterized in that: Each of the air outlet holes on the hot air pipe (3) is equipped with a second filter screen (11).

5. The multi-stage sieving device for drying wood shavings according to claim 1, characterized in that: The spiral guide plate (10) is spirally arranged on the inner side wall of the drum screen (1), and the cross-section of the spiral guide plate (10) is pointed.

6. The multi-stage sieving device for drying wood shavings according to claim 1, characterized in that: The bottom surface of the dust collector (2) is provided with an inclined part corresponding to the second discharge pipe (5).

7. The multi-stage sieving device for drying wood shavings according to claim 1, characterized in that: The outer surface of the dust cover (2) is provided with a heat insulation layer (12), and the heat insulation layer (12) is made of extruded polystyrene board.

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