A raw material drying device for fiberboard

Abstract

The present invention relates to a raw material drying device for fiberboard, which includes a drying cylinder, a hot air blowing device, a dispersing device, and a dual-purpose device. The hot air blowing device is installed at the lower end of the drying cylinder, the dispersing device is installed in the middle of the drying cylinder, a discharge port is provided at the right end of the drying cylinder, a feed port is provided at the upper left side of the left side of the drying cylinder, and the dual-purpose device is installed at the upper left side of the drying cylinder, and the dual-purpose device corresponds to the position of the feed port. The present invention can solve the problems that the raw materials piled up in one place have relatively small gaps between each other. When hot air is blown in from all around, it is difficult to penetrate to the inner layer position, resulting in the situation that while the outer layer of raw materials is dried, the inner layer of raw materials is still in a relatively wet state, resulting in inconsistent drying degrees in different regions. Moreover, after chipping, adjacent raw materials often overlap with each other, and it is difficult to leave gaps between such raw materials, which is more unfavorable for the penetration of hot air and results in low drying efficiency, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of fiberboard processing, and particularly relates to a raw material drying device for fiberboard. Background Art

[0002] Fiberboard, also known as density board, is a man-made board made of wood fiber or other plant fiber as raw materials, and urea-formaldehyde resin or other suitable adhesives are applied. Adhesives and / or additives can be applied during the manufacturing process. Fiberboard has the advantages of uniform material, small difference in longitudinal and transverse strength, and not easy to crack, and is widely used. About 2.5 to 3 cubic meters of wood are required to manufacture 1 cubic meter of fiberboard, which can replace 3 cubic meters of sawn timber or 5 cubic meters of logs. Developing fiberboard production is an effective way to comprehensively utilize wood resources.

[0003] In the processing of fiberboard, the wood must be first sliced by a chipper to obtain chip raw materials, and then dried. The commonly used drying method usually stacks them together and blows hot air around them to dry them. However, this drying method often encounters some problems in actual implementation:

[0004] The raw materials stacked together have small gaps between each other. When hot air is blown around, it is difficult to penetrate to the inner layer position, resulting in the outer layer of raw materials being dry while the inner layer of raw materials is still in a relatively wet state, and the drying degree of different regions is inconsistent. Moreover, the adjacent raw materials after slicing often overlap with each other, and it is difficult to leave gaps between such raw materials, which is more unfavorable for the penetration of hot air, and the drying efficiency is low.

[0005] Therefore, we propose a raw material drying device for fiberboard. Summary of the Invention

[0006] (I) Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution: A raw material drying device for fiberboard, including a drying cylinder, a hot air blowing device, a dispersing device, and a dual-purpose device. The hot air blowing device is installed at the lower end of the drying cylinder, the dispersing device is installed in the middle of the drying cylinder, a discharge port is opened at the right end of the drying cylinder, a feed port is opened at the upper left side of the drying cylinder, and the dual-purpose device is installed at the upper left side of the drying cylinder, and the dual-purpose device corresponds to the position of the feed port.

[0008] A conveying cavity is opened at the lower end of the drying cylinder, a spraying cavity is opened at the left end of the conveying cavity, a spraying outlet is opened at the upper end of the conveying cavity, and the conveying cavity, the spraying cavity, and the spraying outlet are connected and communicated with each other.

[0009] The described hot air blowing device includes a base plate. A connecting cylinder is connected between the base plate with a circular hole and the bottom of the drying cylinder. A blocking block for blocking the circular hole is installed at the bottom of the drying cylinder. The conveying cavity is communicated with a first air pump installed on the outer wall of the drying cylinder. The hot air is respectively conveyed into the conveying cavity and the spraying cavity through the first air pump. When the air outlet position of the spraying cavity is closed, the conveying cavity is in the air outlet state. When the circular hole is blocked by the blocking block, the air outlet position of the spraying cavity is opened.

[0010] The described base plate is composed of a circular plate and an annular frame. A circular hole is opened on the circular plate, and an annular frame is installed at the lower end of the circular plate. The annular frame at the initial position blocks the discharge port and the air outlet position of the spraying cavity. A hot air cavity is formed between the base plate and the inside of the drying cylinder. The hot air cavity in the sealed environment ensures that the hot air sprayed out from the spray outlet can completely spray out from the opened circular hole.

[0011] The described dispersing device includes a rotating frame. The rotating frame is connected to the drying cylinder in a rotational mating manner. The rotating frame is arranged on a circular electric slider, and the circular electric slider is embedded and installed on the inner wall of the drying cylinder. The inside of the rotating frame is uniformly provided with inclined dispersing rods along its circumference. A separating unit with a separating function is arranged above the rotating frame. The front end of the separating unit is connected through a driving mechanism. During specific operation, the circular electric slider drives the rotating frame to rotate at a high speed, thereby driving the dispersing rods to rotate, and further performing a dispersing process on the incoming fiberboard raw materials.

[0012] The described dual-purpose device includes a blowing head. The blowing head is installed on the inner wall of the drying cylinder and is located below the feed port. The inner wall of the drying cylinder is uniformly provided with spraying holes along its circumference. The blowing head is communicated with the spraying holes below the blowing head through a connecting cavity provided with an opening and closing valve. The upper end of the connecting cavity is communicated with a second air pump installed on the outer wall of the drying cylinder. A protective frame is installed on the outer side wall of the drying cylinder. An arc-shaped plate is slidably arranged left and right within the protective frame. A sealing plate for closing the feed port is installed at the upper end of the arc-shaped plate. The sealing plate plays an opening and closing role for the feed port. An extrusion rod for extruding the opening and closing valve is arranged at the lower end of the arc-shaped plate.

[0013] Among them, a telescopic cover is sleeved outside the described connecting cylinder. The telescopic cover made of heat-resistant material plays a role in dust prevention and heat insulation for the outside of the connecting cylinder. The telescopic cover is made of heat-resistant material. An isolation net is installed inside the circular hole. The setting of the isolation net ensures the flow of hot air but reduces the situation of raw materials entering the circular hole.

[0014] Among them, the described separating unit includes a fixing plate. The fixing plate is fixedly installed inside the drying cylinder through a connecting rod. A sliding groove is opened at the right end of the fixing plate. The sliding groove is in a front-back sliding fit connection with the movable plate. A movable rod is installed at the front end of the movable plate.

[0015] Among them, a complete separation plate body is formed between the fixed plate and the movable plate. The upper and lower ends of the separation plate body are convex cone structures. Under the blowing of hot air, the raw materials flutter randomly in the drying cylinder. When the stacked raw materials come into contact with the cone part, they will be separated under the air blowing.

[0016] Among them, the driving mechanism includes a connecting frame. The movable rod is connected to the connecting frame. The connecting frame moving back and forth is connected to the ejecting end of the traction cylinder. The traction cylinder is installed on the outer wall of the drying cylinder.

[0017] Among them, the blowing head is of an arc structure. An arc cavity is opened inside the blowing head. Blowing holes are evenly opened at the right end of the arc cavity. The arc cavity is communicated with the middle of the connecting cavity. After the hot air passes through the arc cavity, it sprays out from the blowing holes.

[0018] Among them, the opening and closing valve includes a blocking plate. A built-in spring is connected between the blocking plate for blocking the arc cavity and the connecting cavity. The built-in spring plays a role in resetting. A column body with a through hole is installed at the left end of the blocking plate. And the position of the through hole at the initial position is misaligned with the connecting cavity. The position of the column body corresponds to that of the extrusion rod.

[0019] (II) Beneficial effects

[0020] 1. For the raw material drying equipment for fiberboard of the present invention, the raw materials are centrally placed into the sealed drying cylinder. Through multiple hot air blows, the raw materials in the sealed environment are blown randomly, so that the stacked raw materials are blown open and dispersed. Then, in cooperation with the rotating dispersing rod and the separating unit moving in a staggered manner, the raw materials stacked together are further dispersed and separated, increasing the void volume between the raw materials, improving the penetration rate of hot air, and improving the drying efficiency.

[0021] 2. For the raw material drying equipment for fiberboard of the present invention, the hot air blowing device changes the function of the air blowing by changing the wind direction trajectory. When the base plate rises to the highest position, the round hole is in an open state. At this time, the spraying cavity is closed and the discharge port is closed. The hot air sprayed out from the round hole conducts hot air blowing and drying treatment on the raw materials. When the base plate descends to the lowest position, the blocking block blocks the round hole, the spraying cavity and the discharge port are opened, and the hot air blows out from the spraying cavity and then blows the dried raw materials to the position of the discharge port.

[0022] 3. For the raw material drying equipment for fiberboard of the present invention, the dispersing device forcibly contacts and disperses the raw materials stacked together by mechanical dispersion, increasing the dispersion rate and the remaining void volume between the raw materials. Description of the drawings

[0023] The present invention will be further described below in conjunction with the drawings and embodiments.

[0024] Figure 1is the first structural schematic diagram of the present invention;

[0025] Figure 2 is the second structural schematic diagram of the present invention;

[0026] Figure 3 is the overall cross-sectional view of the present invention;

[0027] Figure 4 is the structural schematic diagram of the separation unit of the present invention;

[0028] Figure 5 is the present invention Figure 3 partial enlarged view at X of. Detailed implementation manners

[0029] The embodiments of the present invention will be described below with reference to the accompanying drawings. In this process, to ensure the clarity and convenience of the description, we may exaggerate the width of the lines or the size of the components in the drawings.

[0030] In addition, the terms used below are defined based on the functions in the present invention and may vary according to the intentions or conventions of users and operators. Therefore, these terms are defined based on the entire content of this specification.

[0031] As Figures 1 to 5 shown, a raw material drying device for fiberboard includes a drying cylinder 1, a hot blowing device 2, a dispersing device 3, and a dual-purpose device 4. The hot blowing device 2 is installed at the lower end of the drying cylinder 1, the dispersing device 3 is installed in the middle of the drying cylinder 1, a discharge port is opened at the right end of the drying cylinder 1, a feed port is opened at the upper left side of the drying cylinder 1, and the dual-purpose device 4 is installed at the upper left side of the drying cylinder 1, and the dual-purpose device 4 corresponds to the position of the feed port.

[0032] A conveying cavity 5 is opened at the lower end of the drying cylinder 1, a spraying cavity 6 is opened at the left end of the conveying cavity 5, a spraying outlet 7 is opened at the upper end of the conveying cavity 5, and the conveying cavity 5, the spraying cavity 6, and the spraying outlet 7 are connected and communicated with each other.

[0033] The hot blowing device 2 includes a base plate 21. A connecting cylinder 22 is connected between the base plate 21 with a circular hole and the bottom of the drying cylinder 1. A blocking block 23 for blocking the circular hole is installed at the bottom of the drying cylinder 1. The conveying cavity 5 is connected and communicated with a first air pump 24 installed on the outer wall of the drying cylinder 1.

[0034] Specifically, hot air is respectively conveyed into the conveying cavity 5 and the spraying cavity 6 through the first air pump 24. When the air outlet position of the spraying cavity 6 is closed, the conveying cavity 5 is in the air outlet state. When the circular hole is blocked by the blocking block 23, the air outlet position of the spraying cavity 6 is opened.

[0035] The described base plate 21 is composed of a circular plate 211 and an annular frame 212. A round hole is provided on the circular plate 211, and the annular frame 212 is installed at the lower end of the circular plate 211. The annular frame 212 at the initial position seals the discharge port and the air outlet position of the spraying chamber 6. A hot air cavity is formed between the base plate 21 and the inside of the drying cylinder 1. The hot air cavity in the sealed environment ensures that the hot air sprayed out from the spray outlet 7 can completely spray out from the opened round hole. An expansion cover 25 is sleeved outside the connecting cylinder 22. The expansion cover 25 made of heat-resistant material plays a role in dust prevention and heat insulation for the outside of the connecting cylinder 22. The expansion cover 25 is made of heat-resistant material. A separation net 26 is installed inside the round hole. The setting of the separation net 26 ensures the circulation of hot air, but reduces the situation where raw materials enter the round hole.

[0036] The described dispersing device 3 includes a rotating frame 31. The rotating frame 31 is connected to the drying cylinder 1 in a rotational fit manner. The rotating frame 31 is provided with a circular electric slider 32. The circular electric slider 32 is embedded and installed on the inner wall of the drying cylinder 1. The inside of the rotating frame 31 is evenly provided with inclined dispersing rods 33 along its circumferential direction. A separating unit 34 with a separating function is arranged above the rotating frame 31. The front end of the separating unit 34 is connected through a driving mechanism 35.

[0037] Specifically, the circular electric slider 32 drives the rotating frame 31 to rotate at a high speed, thereby driving the dispersing rods 33 to rotate, and then dispersing the raw materials of the fiberboard entering.

[0038] The described separating unit 34 includes a fixing plate 341. The fixing plate 341 is fixedly installed inside the drying cylinder 1 through a connecting rod 342. A sliding groove is provided at the right end of the fixing plate 341. The sliding groove and the movable plate 343 are in a front-back sliding fit connection. A movable rod 344 is installed at the front end of the movable plate 343. A complete separating plate body is formed between the fixing plate 341 and the movable plate 343. The upper and lower ends of the separating plate body are convex cone structures. Under the blowing of the hot air, the raw materials float arbitrarily inside the drying cylinder 1. When the stacked raw materials come into contact with the cone part, they will be separated under the blowing of the air.

[0039] The described driving mechanism 35 includes a connecting frame 351. The movable rod 344 is connected to the connecting frame 351. The connecting frame 351 moving back and forth is connected to the ejecting end of a traction cylinder 352. The traction cylinder 352 is installed on the outer wall of the drying cylinder 1.

[0040] Specifically, under the cooperation of the separating unit 34 and the driving mechanism 35, the traction cylinder 352 drives the connecting frame 351 to move back and forth, thereby driving the movable plate 343 to move back and forth. The movable plate 343 in motion is in relative motion with the fixedly connected fixing plate 341. Then, with the blowing of the hot air on the raw materials, the stacked raw materials on the separating unit 34 are dispersed.

[0041] The described dual-purpose device 4 includes a blowing head 41. The blowing head 41 is installed on the inner wall of the drying cylinder 1 and is located below the feed inlet. Spray holes 42 are evenly formed in the circumferential direction of the inner wall of the drying cylinder 1. A connection cavity 44 provided with an opening and closing valve 43 is connected between the blowing head 41 and the spray holes 42 below the blowing head 41. The upper end of the connection cavity 44 is connected to a second air pump 45 installed on the outer wall of the drying cylinder 1. A protective frame 46 is installed on the outer side wall of the drying cylinder 1. An arc-shaped plate 47 is slidably arranged left and right in the protective frame 46. A sealing plate 48 for closing the feed inlet is installed at the upper end of the arc-shaped plate 47. The sealing plate 48 functions to open and close the feed inlet. An extrusion rod 49 for extruding the opening and closing valve 43 is arranged at the lower end of the arc-shaped plate 47. The blowing head 41 is of an arc-shaped structure. An arc-shaped cavity is formed inside the blowing head 41. Blowing holes are evenly formed at the right end of the arc-shaped cavity. The arc-shaped cavity is connected to the middle of the connection cavity 44. After the hot air passes through the arc-shaped cavity, it is sprayed out from the blowing holes.

[0042] The opening and closing valve 43 includes a blocking plate 431. A built-in spring 432 for blocking the arc-shaped cavity is connected between the blocking plate 431 and the connection cavity 44. The built-in spring 432 functions to reset. A column 433 provided with a through hole is installed at the left end of the blocking plate 431. And the position of the through hole in the initial position is misaligned with the connection cavity 44. The position of the column 433 corresponds to that of the extrusion rod 49.

[0043] Specifically, when the dual-purpose device 4 works, when the feed inlet is open, the hot air is conveyed into the connection cavity 44 through the second air pump 45, and thus is sprayed out from the spray holes 42 and the blowing holes. The hot air sprayed out from the blowing holes blows the just-entered raw materials apart, avoiding the situation that the raw materials fall vertically from the feed inlet and accumulate too much. The spray holes 42 perform annular drying on the entering raw materials. After the feed inlet is closed, the arc-shaped plate 47 is pushed to the right, and the sealing plate 48 and the extrusion rod 49 move synchronously. The sealing plate 48 moving to the right closes the feed inlet, and the extrusion rod 49 moving to the right extrudes the column 433 to move it to the rightmost side. At this time, the positions of the through hole and the connection cavity 44 are connected, and the hot air can still continue to be sprayed out from the spray holes 42, but the blocking plate 431 blocks the arc-shaped cavity.

[0044] The implementation principle of this embodiment is as follows:

[0045] Open the feed inlet, put the raw materials for fiberboard into the drying cylinder 1, and blow the initially-entered raw materials apart by the hot air sprayed out from the blowing holes, so that they fall dispersedly over a large area. During the falling process, the hot air sprayed out from the spray holes 42 performs annular hot blowing on the raw materials;

[0046] Close the feed inlet, close the blowing holes, and the ejection hole 42 continues to eject hot air. The hot air is input into the conveying cavity 5 through the first air pump 24 and then ejected from the round hole, so as to strongly blow the raw materials in the drying cylinder 1. The positions of the raw materials keep turning over. Together with the rotating dispersing rod 33 and the separating unit 34, the stacked raw materials are dispersed and separated, and dried;

[0047] After drying, the connecting cylinder 22 drives the base plate 21 to descend. After descending, the blocking block 23 blocks the round hole, the air outlet position at the lower end is closed, the air outlet position of the ejection cavity 6 is opened, and the discharge port is opened, so as to blow out and collect the dried raw materials from the discharge port.

[0048] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A raw material drying device for fiberboard, comprising a drying cylinder (1), a hot blowing device (2), a dispersing device (3), and a dual-purpose device (4), characterized in that: A heat blowing device (2) is installed at the lower end of the drying cylinder (1), a dispersing device (3) is installed in the middle of the drying cylinder (1), a discharge port is provided at the right end of the drying cylinder (1), a feed port is provided at the upper left side of the drying cylinder (1), and a dual-purpose device (4) is installed at the upper left side of the drying cylinder (1), and the dual-purpose device (4) corresponds to the position of the feed port; A conveying cavity (5) is provided at the lower end of the drying cylinder (1), a spraying cavity (6) is provided at the left end of the conveying cavity (5), and a spraying port (7) is provided at the upper end of the conveying cavity (5); The heat blowing device (2) includes a base plate (21), a connecting cylinder (22) is connected between the base plate (21) with a round hole and the bottom of the drying cylinder (1), a blocking block (23) for blocking the round hole is installed at the bottom of the drying cylinder (1), and the conveying cavity (5) is communicated with a first air pump (24) installed on the outer wall of the drying cylinder (1); The base plate (21) is composed of a circular plate (211) and an annular frame (212). A round hole is provided on the circular plate (211), and an annular frame (212) is installed at the lower end of the circular plate (211). The annular frame (212) at the initial position blocks the discharge port and the air outlet position of the spraying cavity (6), and a hot air cavity is formed between the base plate (21) and the inside of the drying cylinder (1); The dispersing device (3) includes a rotating frame (31), the rotating frame (31) is connected to the drying cylinder (1) in a rotationally matching manner, a circular electric slider (32) is arranged on the rotating frame (31), the circular electric slider (32) is embedded and installed on the inner wall of the drying cylinder (1), dispersing rods (33) in an inclined state are uniformly arranged along the circumferential direction inside the rotating frame (31), a separating unit (34) with a separating function is arranged above the rotating frame (31), and the front end of the separating unit (34) is connected through a driving mechanism (35); The dual-purpose device (4) includes a blowing head (41), the blowing head (41) is installed on the inner wall of the drying cylinder (1), and the blowing head (41) is located below the feed port. Spray holes (42) are uniformly provided along the circumferential direction on the inner wall of the drying cylinder (1), and the blowing head (41) is communicated with the spray holes (42) below the blowing head (41) through a connecting cavity (44) provided with an opening and closing valve (43). The upper end of the connecting cavity (44) is communicated with a second air pump (45) installed on the outer wall of the drying cylinder (1). A protective frame (46) is installed on the outer side wall of the drying cylinder (1), an arc-shaped plate (47) is slidably arranged left and right inside the protective frame (46), a sealing plate (48) for closing the feed port is installed at the upper end of the arc-shaped plate (47), and a pressing rod (49) for pressing the opening and closing valve (43) is arranged at the lower end of the arc-shaped plate (47); The separating unit (34) includes a fixing plate (341), the fixing plate (341) is fixedly installed inside the drying cylinder (1) through a connecting rod (342), a sliding groove is provided at the right end of the fixing plate (341), the sliding groove is in a front-back sliding fit connection with a movable plate (343), and a movable rod (344) is installed at the front end of the movable plate (343); A complete separation plate body is formed between the fixed plate (341) and the movable plate (343), and the upper and lower ends of the separation plate body are convex conical structures.

2. The raw material drying equipment for fiberboard according to claim 1, characterized in that: A telescopic cover (25) is sleeved outside the connecting cylinder (22). The telescopic cover (25) is made of heat-resistant material, and an isolation net (26) is installed inside the round hole.

3. The raw material drying equipment for fiberboard according to claim 1, characterized in that: The driving mechanism (35) includes a connecting frame (351). The movable rod (344) is connected to the connecting frame (351). The connecting frame (351) moving back and forth is connected to the ejecting end of the traction cylinder (352), and the traction cylinder (352) is installed on the outer wall of the drying cylinder (1).

4. The raw material drying equipment for fiberboard according to claim 1, characterized in that: The blowing head (41) is of an arc structure. An arc cavity is formed inside the blowing head (41). Blowing holes are evenly formed at the right end of the arc cavity, and the arc cavity communicates with the middle of the connecting cavity (44).

5. The raw material drying equipment for fiberboard according to claim 1, characterized in that: The opening and closing valve (43) includes a blocking plate (431). An internal spring (432) is connected between the blocking plate (431) for blocking the arc cavity and the connecting cavity (44). A column body (433) with a through hole is installed at the left end of the blocking plate (431), and the position of the through hole at the initial position is arranged in a dislocation manner with respect to the connecting cavity (44). The column body (433) corresponds to the position of the extrusion rod (49).

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