Paving boxes for particleboard production

Abstract

The present invention discloses a paving box for particleboard production, comprising a box body and a paving conveying mechanism passing through the box body, wherein the forward direction of the paving conveying mechanism is the paving direction; a feeding port is provided on the box body, wherein the feeding direction is opposite to the paving direction; a negative pressure draft part is provided on the box body, wherein the draft direction is opposite to the paving direction; wherein a blocking component is provided between the feeding port and the negative pressure draft part to destroy the vortex generated by the air suction of the negative pressure draft part. The present invention utilizes the combination of the material thrown from the feeding port and the negative pressure draft part, so that the material is sprinkled on the paving conveying mechanism in the form of a parabola, and the paving is more uniform; and a blocking component is provided between the feeding port and the negative pressure draft part to destroy the vortex generated by the suction of the negative pressure draft part, thereby preventing bark or light wood chips from spinning in the vortex and affecting the composition structure of the wood chip raw material, thereby avoiding the resulting particleboard defects.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial board production, and more specifically, to a paving box for particle board production. Background Art

[0002] In the production process of particleboard, the shavings need to be evenly spread on the conveyor belt to form a slab, which is then transported to the press by the conveyor belt and then pressed to form the particleboard. The shavings are spread in a paving box. Specifically, the paving box is generally provided with a feed port, from which the shavings are put in and spread on the conveyor belt moving forward to form the slab. The uniformity of the spread will affect the quality of the slab, and thus affect the quality of the particleboard.

[0003] Most existing paving boxes are designed for core wood shavings, which basically have no bark and can maintain a relatively uniform raw material composition or state during the spreading process, so the quality of the paved slabs is better. However, when the shavings contain a lot of miscellaneous wood and veneer, the raw material composition will be uneven during the spreading process, and even veneer or light shavings will swirl in the air vortex, which will eventually lead to structural defects and surface mottled defects in the particleboard.

[0004] Therefore, it is urgent to design a paving box for particleboard production that can solve the above problems. Summary of the invention

[0005] An object of the present invention is to address at least the above-mentioned disadvantages and to provide at least the advantages which will be described hereinafter.

[0006] Another object of the present invention is to provide a paving box for particleboard production, which utilizes a feeding port to throw materials in combination with a negative pressure draft section so that the materials fall on the paving conveying mechanism in the form of a parabola, making the paving more uniform; and a blocking component is arranged between the feeding port and the negative pressure draft section to destroy the vortex generated by the suction of the negative pressure draft section, thereby preventing bark or light wood chips from spinning in the vortex and affecting the composition of the wood chip raw materials, thereby avoiding the resulting particleboard defects.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A paving box for particleboard production, comprising a box body and a paving conveying mechanism passing through the box body, wherein the forward direction of the paving conveying mechanism is the paving direction; a feeding port is provided on the box body, and the feeding direction is opposite to the paving direction; a negative pressure air induction part is provided on the box body, and the air induction direction is opposite to the paving direction; wherein a blocking component is provided between the feeding port and the negative pressure air induction part to destroy the vortex generated by the air exhaust of the negative pressure air induction part.

[0009] In the prior art, the shavings are scattered from the feeding head onto the conveyor belt for paving, which results in uneven paving. Moreover, the scattering will cause changes in the airflow in the paving box. The fluctuation of the airflow affects the composition of the shavings, and further affects the paving structure, thus affecting the quality of the particleboard. In this case, a parabolic feeding in the opposite direction of paving is designed, and a consistent gas flow direction is constructed in combination with a negative pressure draft section, which reduces the impact of airflow fluctuations on the feeding and makes the shavings more uniform.

[0010] At the same time, the negative pressure draft section is prone to produce vortices at the front end of the exhaust, causing the bark or light wood shavings to spin in the vortex. When they accumulate to a certain weight, they fall together on the paving conveyor belt, causing the bark or light wood shavings to accumulate intermittently, affecting the uniformity of paving. After being hot-pressed into particleboard, white and black spots are formed on the particleboard (due to uneven material texture), which not only affects the appearance of the particleboard, but also affects the structural strength of the particleboard. In response to this problem, the applicant set a blocking component between the feeding port and the negative pressure draft section to destroy the vortex generated by the exhaust, straighten the airflow, and fundamentally solve the problem of particleboard spot defects.

[0011] Preferably, in the paving box for particleboard production, the feeding port is located at one end of the paving conveying mechanism on the box body, and the feeding port throws materials in the paving direction;

[0012] The negative pressure ventilation part is located at one end of the box body through which the pavement conveying mechanism penetrates. The negative pressure provided by the negative pressure ventilation part is combined with material throwing, so that the material is scattered on the pavement conveying mechanism.

[0013] In the above technical solution, the feeding port and the negative pressure draft part are respectively located at the two ends of the box body, and the combination of the two can effectively increase the parabolic stroke of the shavings raw material and improve the paving uniformity.

[0014] Preferably, in the paving box for particleboard production, the blocking component is arranged at the position where the vortex is generated. Generally speaking, the vortex is generated near the front end of the negative pressure draft section. Under the suction force of the negative pressure draft section, multiple airflows converge and intersect at this position, which easily generates a vortex, and the bark or light wood shavings can easily spin here. The position where the negative pressure draft section is set is different, and the position where the vortex is generated will also be different. Therefore, before setting the blocking component, observe or detect the position where the vortex is generated, mark it, and then install the blocking component accordingly. At the same time, the shape of the blocking component that is withdrawn can be designed as needed, as long as it can destroy the vortex.

[0015] Preferably, in the paving box for particleboard production, the blocking component is a baffle or a block. The baffle and the block are simple in structure, low in cost, and easy to disassemble and assemble. At the same time, they can also destroy vortices and straighten out airflow.

[0016] Preferably, in the pavement box for particleboard production, the baffle is located above and close to the pavement conveying mechanism to directly destroy the vortex formed on the upper surface of the pavement conveying mechanism. This position is usually the eye of the vortex, and arranging the baffle there can achieve twice the result with half the effort.

[0017] Preferably, in the paving box for particleboard production, the baffle is perpendicular to the forward direction of the paving conveying mechanism, and the length of the baffle is equal to or similar to the width of the paving conveying mechanism.

[0018] Preferably, in the paving box for particleboard production, a plurality of material leveling nets are arranged in the box body along the feeding direction to evenly disperse the thrown materials. The material leveling nets are grid-shaped or mesh-shaped, have spaces for the wood shavings to pass through, and can effectively destroy the materials that are clumped.

[0019] Preferably, in the paving box for particleboard production, the scattered materials fall onto the paving conveying mechanism in a parabola, and the installation angles of the plurality of screed nets also change along the direction of the parabola, so that the materials pass through the screed nets at a vertical or nearly vertical angle. This design method enables the materials to pass through the screed nets quickly, reduces friction and contact with the screed nets, reduces wear, and reduces the change of the parabolic trajectory of the materials by the screed nets.

[0020] Preferably, in the paving box for particleboard production, the paving conveying mechanism is a belt conveyor.

[0021] Preferably, in order to more accurately set the baffle in the correct position, the present invention sets tracks on both side walls in the width direction of the box, and the two ends of the baffle match the tracks through a matching part, and the matching part has a driving wheel, and the slide rail extends along the length direction of the box. The driving wheel can drive the baffle to move forward and backward along the track, so that it can move forward and backward inside the box to adjust the position. When the driving wheel is locked, the baffle is relatively fixed to the track, and a number of wind force sensing plates are arranged on the baffle, and the sensing plate can rotate relative to the baffle, and a torsion spring is arranged at the position where the baffle and the sensing plate are combined. Under normal conditions, the torsion spring is not subjected to force, and the sensing plate and the baffle are relatively parallel. When the sensing plate is subjected to a vortex, under the action of the vortex, the sensing plate rotates relative to the baffle, and the torsion spring provides a torsion force to cause the sensing plate to return to its position. At the same time, a pressure sensor is arranged at the junction of the sensing plate and the baffle, and the pressure sensor senses the rotation of the sensing plate, thereby reflecting the strength of the vortex. When in use, the remote control driving wheel drives the baffle to move forward and backward, collects and compares the data of the pressure sensor, and then keeps the baffle at the position with the maximum vortex intensity. The use of the sensing plate in the present invention can reduce the impact on airflow and materials.

[0022] The present invention has at least the following beneficial effects:

[0023] The present invention designs a parabolic feeding direction opposite to the paving direction, combines a negative pressure draft part to construct a consistent gas flow direction, reduces the influence of air flow fluctuations on the feeding, and makes the wood shavings raw materials more uniform.

[0024] At the same time, a blocking component is arranged between the feeding port and the negative pressure air induction part to destroy the vortex generated by the exhaust, straighten the airflow, and fundamentally solve the problem of particleboard spot defects.

[0025] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the paving box for particleboard production according to the present invention;

[0027] Figure 2 This is a schematic structural diagram of the paving box for particleboard production according to the present invention when no baffle components are installed;

[0028] Figure 3 This is a schematic diagram of the internal structure of the paving box used for particleboard production when the baffle is installed. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the embodiments so that those skilled in the art can implement it with reference to the description. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] Figure 1 The present invention shows a paving box for particleboard production, comprising a box body 1 and a paving conveying mechanism 5 passing through the box body 1, the forward direction of the paving conveying mechanism is the paving direction 9; a feeding port 2 is provided on the box body 1, and a feeding direction 4 is opposite to the paving direction 9; a negative pressure air induction part 3 is provided on the box body 1, and the air induction direction is opposite to the paving direction 9; wherein a blocking component 6 is provided between the feeding port 2 and the negative pressure air induction part 3 to destroy the vortex generated by the air exhaust of the negative pressure air induction part 3.

[0031] In the prior art, the shavings are fed from the feeding port onto the conveyor belt for paving, which results in uneven paving. The feeding will cause changes in the airflow in the paving box. The fluctuation of the airflow affects the composition of the shavings, and further affects the paving structure, thus affecting the quality of the particleboard. In this case, a parabolic feeding in the opposite direction of the paving is designed, and a consistent gas flow direction is constructed in combination with a negative pressure draft section, which reduces the impact of airflow fluctuations on the feeding and makes the shavings more uniform.

[0032] At the same time, if Figure 2 As shown, the negative pressure draft section 3 is prone to produce a vortex 10 at the front end of the exhaust, causing materials such as bark or light wood shavings to spin in the vortex. When they accumulate to a certain weight, they fall together on the paving conveyor belt, causing intermittent accumulation of bark or light wood shavings, affecting the uniformity of paving. After being hot-pressed into particleboard, white and black spots are formed on the particleboard (due to uneven material texture), which not only affects the appearance of the particleboard, but also affects the structural strength of the particleboard. To address this problem, the applicant set a blocking component 6 between the feeding port 2 and the negative pressure draft section 3 to destroy the vortex generated by the exhaust. Figure 1 In the structure shown, the baffle assembly 6 destroys the vortex to form two main airflows, one horizontal airflow 7 passes through the bottom of the baffle assembly 6, and the other goes up along the baffle assembly 6 to form an upward airflow 8, thereby achieving the purpose of straightening the airflow, reducing the generation of vortices, and fundamentally solving the problem of particleboard mottled defects.

[0033] It should be pointed out that the location where the vortex is generated is not limited to Figure 2 As shown in the position, different structures of the paving box and different airflow conditions will cause the vortex to be generated in different locations. However, as long as the location where the vortex is generated is observed and detected in advance, a structure that destroys the vortex can be set at the corresponding location to prevent bark or lightweight materials from spinning in the vortex.

[0034] Further, in another embodiment, Figure 1 As shown, the feeding port 2 is located at one end of the paving conveying mechanism 5 on the box body 1 that passes through the box body, and the feeding port 2 throws the material in the paving direction;

[0035] The negative pressure air induction part 3 is located on the box body and the paving conveying mechanism 5 penetrates into one end of the box body. The negative pressure provided by the negative pressure air induction part 3 is combined with the material throwing, so that the material is scattered on the paving conveying mechanism.

[0036] In this embodiment, the feeding port 2 and the negative pressure air induction part 3 are respectively located at two ends of the box body 1, and the combination of the two can effectively increase the parabolic stroke of the wood shavings raw material and improve the paving uniformity.

[0037] Furthermore, in another embodiment, the blocking component 6 is arranged at the position where the vortex 10 is generated. Generally speaking, the vortex 10 is generated near the front end of the negative pressure draft section 3. Under the suction force of the negative pressure draft section 3, multiple airflows converge and intersect at this position, and a vortex is easily generated, and bark or light wood shavings are easy to spin here. The position where the negative pressure draft section is set is different, and the position where the vortex is generated will also be different. Therefore, before setting the blocking component, observe or detect the position where the vortex is generated, mark it, and then install the blocking component 6 accordingly. At the same time, the shape of the withdrawn blocking component can be designed as needed, as long as it can destroy the vortex.

[0038] Furthermore, in another embodiment, the blocking member 6 is a baffle or a block. The baffle and the block are simple in structure, low in cost, and easy to assemble and disassemble. They can also destroy vortices and straighten out airflow. Figure 3 In the structure shown, the blocking component 6 is a baffle, which is arranged inside the box body 1 through a mounting member 12 .

[0039] Further, in another embodiment, Figure 1 and 3 As shown, the baffle plate as a blocking component 6 is located above and close to the paving conveying mechanism 5 to directly destroy the vortex formed on the upper surface of the paving conveying mechanism 5. This position is usually the eye of the vortex 10, and arranging the baffle plate there can achieve twice the result with half the effort. The specific proximity depends on the actual situation, as long as the baffle plate does not affect the paving of the wood shavings and can destroy the vortex.

[0040] Further, in another embodiment, Figure 3 As shown, the baffle plate as a blocking component 6 is perpendicular to the advancing direction of the paving and conveying mechanism 5 , and the length of the baffle plate is equal to or similar to the width of the paving and conveying mechanism 5 .

[0041] Further, in another embodiment, Figure 1 As shown, in the box 1, a plurality of material leveling nets 11 are arranged along the feeding direction 9 to evenly disperse the thrown materials. The material leveling nets 11 are in the shape of a grid or a mesh, and have grids through which the shavings pass, and can effectively destroy the materials that are agglomerated.

[0042] Further, in another embodiment, Figure 1 As shown, the scattered materials fall onto the paving conveying mechanism 5 in a parabola, and the installation angles of the plurality of leveling nets 11 also change along the direction of the parabola, so that the materials pass through the leveling nets 11 at a vertical or nearly vertical angle. This design method enables the materials to pass through the leveling nets 11 quickly, reduces friction and contact with the leveling nets 11, reduces wear, and reduces the change of the parabolic trajectory of the materials by the leveling nets.

[0043] Furthermore, in another embodiment, the paving conveying mechanism is a belt conveyor. Generally speaking, side panels are provided on both sides of the belt conveyor, and the side panels and the conveyor belt enclose a paving space.

[0044] Further, in another embodiment, in order to more accurately set the baffle in the correct position, the present invention provides rails on both side walls in the width direction of the box, and the two ends of the baffle cooperate with the rails through a matching part, and the matching part has a driving wheel, and the slide rail extends along the length direction of the box. The driving wheel can drive the baffle to move forward and backward along the rail, so that it can move forward and backward inside the box to adjust the position. When the driving wheel is locked, the baffle is relatively fixed to the rail, and a plurality of wind force sensing plates are provided on the baffle, and the sensing plates can rotate relative to the baffle, and a torsion spring is provided at the position where the baffle and the sensing plate are combined. Under normal conditions, the torsion spring is not subjected to force, and the sensing plate and the baffle are relatively parallel. When the sensing plate is subjected to a vortex, under the action of the vortex, the sensing plate rotates relative to the baffle, and the torsion spring provides a torsion force to cause the sensing plate to return to its position. At the same time, a pressure sensor is provided at the junction of the sensing plate and the baffle, and the pressure sensor senses the rotation of the sensing plate, thereby reflecting the strength of the vortex. When in use, the remote control driving wheel drives the baffle to move forward and backward, collects and compares the data of the pressure sensor, and then keeps the baffle at the position with the maximum vortex intensity. The use of induction plates in this case can reduce the impact on airflow and materials.

[0045] An implementation process of the present invention is as follows:

[0046] The shavings are fed from the feeding port, the paving conveyor mechanism operates, the negative pressure draft section draws air, and the shavings are scattered parabolically on the paving conveyor mechanism to form shavings slabs, which are then transported away by the paving conveyor mechanism. The vortex generated during the paving process is destroyed by the blocking components.

[0047] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized.

Claims

1. A paving box for particleboard production, characterized in that: The invention comprises a box body and a paving conveying mechanism passing through the box body, wherein the advancing direction of the paving conveying mechanism is the paving direction; a feeding port is arranged on the box body, wherein the feeding direction is opposite to the paving direction; a negative pressure air induction part is arranged on the box body, wherein the air induction direction is opposite to the paving direction; wherein a blocking component is arranged between the feeding port and the negative pressure air induction part, wherein the blocking component is a baffle; and the blocking component is arranged at the position where the vortex is generated to destroy the vortex generated by the air drawn by the negative pressure air induction part; In the box, a plurality of material leveling nets are arranged along the feeding direction to evenly disperse the scattered materials; the scattered materials are scattered onto the paving conveying mechanism in a parabola, and the installation angles of the plurality of material leveling nets are also changed along the direction of the parabola, so that the materials pass through the material leveling nets at a vertical or nearly vertical angle; Tracks are respectively arranged on the two side walls in the width direction of the box body, and both ends of the baffle are matched with the track through a matching part. The matching part has a driving wheel, and the slide rail extends along the length direction of the box body. The driving wheel can drive the baffle to move forward and backward along the track, so that it can move forward and backward inside the box body to adjust the position. When the driving wheel is locked, the baffle is relatively fixed to the track. A number of wind force sensing plates are arranged on the baffle, and the sensing plates can rotate relative to the baffle, and a torsion spring is arranged at the position where the baffle and the sensing plate are combined. Under normal conditions, the torsion spring is not subjected to force, and the sensing plate and the baffle are relatively parallel. When the sensing plate is subjected to a vortex, under the action of the vortex, the sensing plate rotates relative to the baffle, and the torsion spring provides a torsion force to cause the sensing plate to return to its position. At the same time, a pressure sensor is arranged at the joint of the sensing plate and the baffle, and the pressure sensor senses the rotation of the sensing plate, thereby reflecting the strength of the vortex. When in use, the remote control driving wheel drives the baffle to move forward and backward, collects and compares data from the pressure sensor, and then keeps the baffle at the position with the maximum vortex intensity.

2. The paving box for particleboard production according to claim 1, characterized in that: The feeding port is located at one end of the paving conveying mechanism on the box body, and the feeding port throws materials in the paving direction; The negative pressure ventilation part is located at one end of the box body through which the pavement conveying mechanism penetrates. The negative pressure provided by the negative pressure ventilation part is combined with material throwing, so that the material is scattered on the pavement conveying mechanism.

3. The paving box for particleboard production according to claim 1, characterized in that: The baffle is located above the paving and conveying mechanism and close to the paving and conveying mechanism to directly destroy the vortex formed on the upper surface of the paving and conveying mechanism.

4. The paving box for particleboard production according to claim 3, characterized in that: The baffle is perpendicular to the advancing direction of the paving and conveying mechanism, and the length of the baffle is equal to or close to the width of the paving and conveying mechanism.

5. The paving box for particleboard production according to claim 1, characterized in that: The paving and conveying mechanism is a belt conveyor.

Images