Dehydration device for modified fiberboard raw materials

Abstract

The invention discloses a modified fiberboard raw material dewatering device which comprises a dewatering device body, the dewatering device body is mainly composed of pre-dewatering units on the two sides, a middle strengthening dewatering unit and a drying dewatering unit below the middle strengthening dewatering unit, and the pre-dewatering units structurally comprise filter cartridges symmetrically arranged on the two sides; and filter screens are mounted in the two filter cartridges. The material conveying augers are arranged on the two sides in the pre-dehydration unit, and the distance between every two adjacent spiral blades on the material conveying augers on the two sides is from large to small from the two ends to the middle, so that the squeezing effect between materials is stronger and the dehydration effect is better when the materials move towards the middle, and the dehydration efficiency is improved; and meanwhile, a conical head is matched to push the conveyed materials to one point in a concentrated mode to enter an extrusion channel, the materials are extruded more tightly in the extrusion channel under pushing of the counteraction of a limiting spring, the extruded materials fall into a drying channel to be conveyed by a material conveying belt, and a hot-air blower is matched for drying during conveying.

Description

Technical Field

[0001] The present invention relates to the technical field of raw material dehydration, and more specifically, to a dehydration device for modified fiberboard raw materials. Background Art

[0002] In the production process of fiberboard, dehydration of raw materials is a crucial link. Fiberboard is a man-made board made of wood fiber or other plant fiber as raw materials, with urea-formaldehyde resin or other suitable adhesives applied. Adhesives and additives can be applied during the manufacturing process to make it have the advantages of uniform material, small longitudinal and transverse strength difference, and not easy to crack. However, the raw fiber faces many challenges in the dehydration process.

[0003] Many existing modified fiberboard raw material dehydration devices have efficiency bottlenecks when processing large amounts of raw materials. Traditional dehydration methods, such as natural drying or simple mechanical extrusion dehydration, cannot meet the needs of large-scale production. Natural drying is limited by factors such as weather and site, and the drying time is long, and it is difficult to ensure the uniformity of dehydration. Although mechanical extrusion dehydration can speed up the dehydration speed to a certain extent, for fiberboard raw materials with a certain fiber structure and viscosity, more moisture often remains after extrusion, and re-dehydration is required, affecting subsequent processing. The single-screw extrusion dehydrator used by some common small processing plants when processing modified fiberboard raw materials has a single extrusion method, low efficiency, and can only remove part of the surface moisture. The moisture inside the raw material is difficult to be effectively discharged, resulting in the moisture content of the dehydrated raw material is still high, and it cannot directly enter the next production process and needs further processing, thereby reducing the overall production efficiency.

[0004] Therefore, in view of this, the inventor, based on his many years of rich experience in design, development and actual production in the relevant industry, has studied and improved the existing structure and deficiencies, and provided a dehydration device for modified fiberboard raw materials, in order to achieve a more practical purpose. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a dehydration device for modified fiberboard raw materials. By setting feeding screws on both sides of the pre-dehydration unit, and the spacing between the adjacent spiral blades on the feeding screws on both sides is set from large to small from the two ends to the middle, the more the material moves to the middle, the stronger the extrusion effect between the materials, the better the dehydration effect, and the dehydration efficiency is improved. At the same time, the conveyed materials are pushed to one point to enter the inside of the extrusion channel in cooperation with the conical head. Under the reaction of the limit spring, the materials are squeezed more tightly inside the extrusion channel, and the extruded materials fall into the inside of the drying channel and are conveyed by the conveyor belt. While conveying, they are dried with the hot air blower, and the dehydration effect of the materials is further improved. By setting a crushing roller, a main shaft and a crushing motor for crushing the extruded materials inside the discharge box, the crushing motor is driven to drive the crushing roller and the main shaft to rotate inside the discharge box, and the falling materials extruded at the discharge port of the extrusion channel are crushed while rotating, and fall on the conveyor belt for conveying and drying, thereby further improving the dehydration effect of the materials and further improving the practicality of the device, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a dehydration device for modified fiberboard raw materials, comprising a dehydration device body, wherein the dehydration device body comprises pre-dehydration units on both sides, a middle strengthening dehydration unit, and a drying and dehydration unit below the pre-dehydration unit;

[0007] The pre-dehydration unit comprises filter cartridges symmetrically arranged on both sides, filter screens are installed inside the two filter cartridges, and feed screws for conveying materials are arranged inside the two filter screens. The spacing between adjacent spiral leaves on the two feed screws is arranged from large to small from the two ends to the middle, so that the materials being conveyed are squeezed more tightly;

[0008] The middle enhanced dehydration unit comprises conical heads respectively installed at opposite ends of two filter cartridges, an extrusion channel is installed through the opposite ends of the two conical heads, an extrusion head is slidably installed inside the extrusion channel, and a pushing mechanism is commonly provided on the opposite sides of the two extrusion heads for further extruding the material inside the extrusion channel for dehydration;

[0009] The drying and dehydration unit comprises a discharge box installed on the outer wall of the extrusion channel, and a drying channel and a hot air blower connected to the discharge box to further dry the material. A conveyor belt for conveying the material to dry is arranged inside the drying channel.

[0010] Preferably, the pre-dehydration unit further comprises a driving shaft installed inside the corresponding feeding auger, the two driving shafts are rotatably installed inside the corresponding filter cartridges respectively, and the opposite ends of the two driving shafts respectively penetrate the corresponding filter cartridges and are equipped with driving motors.

[0011] Preferably, a water tank for launching water is installed at the bottom of the two filter cartridges, a mounting seat is installed on one side of the two water tanks, and the two driving motors are respectively installed on the corresponding mounting seats.

[0012] Preferably, the central enhanced dehydration unit also includes grooves respectively opened inside the corresponding extrusion heads, and limit springs are installed inside the two grooves. Slide blocks are installed at the opposite ends of the two limit springs and are slidably installed inside the corresponding grooves.

[0013] Preferably, guide blocks with inclined inner walls are installed on the surfaces of opposite sides of the two sliding blocks, and moving blocks are slidably installed inside the two guide blocks. A screw block is commonly installed on one side of the two moving blocks, and a screw rod is installed on the internal thread of the screw block. The screw rod is rotatably installed inside the extrusion channel, and the upper end of the screw rod passes through the extrusion channel and extends to the outside of the discharge box.

[0014] Preferably, the extrusion channel is provided with two movable openings, and two limit blocks are slidably installed inside the two movable openings, and a corresponding group of limit blocks are respectively installed on the corresponding extrusion head and the slider.

[0015] Preferably, the drying and dehydration unit also includes a fixed pipe for connecting the discharge box and the hot air blower, a two-way pipe is installed on one side of the fixed pipe and is connected to the output end of the hot air blower, air inlet boxes are installed at both ends of the two-way pipe, and the two air inlet boxes are installed inside the drying channel, and multiple nozzles facing the materials are installed on one side of the two air inlet boxes.

[0016] Preferably, a crushing roller is provided directly below the discharge port of the extrusion channel, and the crushing roller is rotatably installed inside the discharge box. A main shaft is installed on the shaft wall of the crushing roller, one end of the crushing roller passes through the discharge box and is installed with a crushing motor, and the crushing motor is installed on the discharge box.

[0017] Preferably, a feeding platform is installed at the feeding port of the two filter cartridges, and a pressing roller for quantitative feeding is rotatably installed inside the two feeding platforms, and a rotating motor is installed at the upper end of the two pressing rollers.

[0018] Preferably, an observation window is installed on the top of the drying channel, a heat preservation curtain is installed at the discharge port of the drying channel, and a collection vehicle is provided below the discharge port of the drying channel.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention sets feeding screws on both sides of the pre-dehydration unit, and the distance between the adjacent spiral blades on the feeding screws on both sides is set from large to small from the two ends to the middle, so that the more the material moves to the middle, the stronger the extrusion effect between the materials, the better the dehydration effect, and the dehydration efficiency is improved. At the same time, the conveyed materials are pushed to one point into the inside of the extrusion channel with the help of the conical head. Under the reaction of the limit spring, the materials are squeezed more tightly inside the extrusion channel, and the extruded materials fall into the drying channel and are conveyed by the feeding belt. While conveying, they are dried with the help of the hot air blower, and the dehydration effect of the materials is further improved.

[0021] 2. The present invention arranges a crushing roller, a main shaft and a crushing motor for crushing the extruded material inside the discharge box, and drives the crushing motor to drive the crushing roller and the main shaft to rotate inside the discharge box. While rotating, the material extruded from the discharge port of the extrusion channel is crushed and falls on the conveyor belt for transportation and drying, thereby further improving the dehydration effect of the material;

[0022] 3. The present invention sets a feed table, a pressure roller and a rotating motor at the feed ports of the filter cartridges on both sides. When unloading materials, the rotating motor is controlled to drive the pressure roller to rotate inside the feed table, thereby controlling the quantitative amount of material to enter the corresponding filter cartridge from the inside of the feed table, thereby facilitating the setting according to actual needs and preventing the occurrence of material blockage at the feed port of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a rear view schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 The middle part is a schematic diagram of the enlarged cross-section structure;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] The accompanying drawings are marked as follows: 1. filter cartridge; 2. filter screen; 3. feed auger; 4. conical head; 5. extrusion channel; 6. extrusion head; 7. discharge box; 8. drying channel; 9. feed belt; 10. drive shaft; 11. drive motor; 12. mounting seat; 13. lower water tank; 14. groove; 15. limit spring; 16. slider; 17. guide block; 18. moving block; 19. screw block; 20. screw; 21. moving port; 22. limit block; 23. crushing roller; 24. main shaft; 25. crushing motor; 26. hot air blower; 27. two-way pipe; 28. air intake box; 29. ​​nozzle; 30. feed table; 31. pressure roller; 32. rotating motor; 33. thermal insulation curtain; 34. observation window; 35. collection vehicle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] As attached Figure 1 To Attachment Figure 5 The dehydration device for a modified fiberboard raw material shown comprises a dehydration equipment body, which is mainly composed of pre-dehydration units on both sides, a middle strengthening dehydration unit and a drying and dehydration unit below the pre-dehydration unit.

[0031] The pre-dehydration unit structure comprises filter cartridges 1 symmetrically arranged on both sides, and filter screens 2 are installed inside the two filter cartridges 1 to filter out part of the water in the material. A feeding auger 3 for conveying and moving the material is arranged inside the filter screen 2. The spacing between adjacent spiral leaves on the feeding auger 3 is arranged from large to small from the two ends to the middle, so that the material is gradually squeezed tightly during the conveying process, thereby improving the dehydration effect;

[0032] The pre-dehydration unit also includes a drive shaft 10 installed inside the corresponding feed auger 3. The two drive shafts 10 are rotatably installed inside the corresponding filter cartridge 1, and the opposite ends of the two drive shafts 10 respectively penetrate the corresponding filter cartridge 1 and are equipped with a drive motor 11. The drive of the drive motor 11 can drive the feed auger 3 to rotate inside the filter cartridge 1, thereby realizing the transportation and extrusion dehydration of the material.

[0033] Secondly, a lower water tank 13 is installed at the bottom of the two filter cartridges 1 to collect water dripping from the filter 2. At the same time, a mounting seat 12 is installed on one side of the two lower water tanks 13, and two drive motors 11 are respectively installed on the corresponding mounting seats 12 to fix the position of the drive motor 11.

[0034] At the same time, in order to control the feeding amount of the material, a feeding platform 30 is installed at the feeding port of the two filter cartridges 1, and a pressing roller 31 is rotatably installed inside the feeding platform 30. A rotating motor 32 is installed on the upper end of the pressing roller 31. By controlling the drive of the rotating motor 32, the pressing roller 31 can be driven to rotate inside the feeding platform 30, thereby realizing quantitative control of the material feeding.

[0035] The structure of the middle enhanced dehydration unit includes conical heads 4 respectively installed at the opposite ends of the two filter cartridges 1, an extrusion channel 5 is installed through the opposite ends of the two conical heads 4, an extrusion head 6 is slidably installed inside the extrusion channel 5, and a pushing mechanism is provided on the opposite sides of the two extrusion heads 6 for further extruding the material inside the extrusion channel 5 for dehydration.

[0036] Secondly, the cooperative pushing mechanism includes grooves 14 respectively opened in the corresponding extrusion heads 6, and limit springs 15 are installed in the two grooves 14. The opposite ends of the limit springs 15 are installed with sliders 16. The sliders 16 are slidably installed in the corresponding grooves 14. The surfaces of the opposite sides of the two sliders 16 are installed with guide blocks 17 with inclined inner walls. A moving block 18 is slidably installed in the guide block 17. A screw block 19 is installed on one side of the two moving blocks 18. A screw rod 20 is installed on the internal thread of the screw block 19. The screw 20 is rotatably installed in the extrusion channel 5, and its upper end passes through the extrusion channel 5 and extends to the outside of the discharge box 7. By rotating the screw rod 20, the screw block 19 can be driven to move on the screw rod 20, thereby pushing the moving block 18 and the guide block 17 to slide in the guide block 17, and then driving the slider 16 and the extrusion head 6 to move in the extrusion channel 5, so as to realize further extrusion and dehydration of the material.

[0037] Secondly, in order to ensure the stable movement of the extrusion head 6 and the slider 16 inside the extrusion channel 5, two moving openings 21 are opened on the extrusion channel 5, and two limit blocks 22 are slidably installed inside the two moving openings 21. A corresponding group of limit blocks 22 are respectively installed on the corresponding extrusion head 6 and slider 16 to limit the movement range of the extrusion head 6 and the slider 16.

[0038] The drying and dehydration unit structure comprises a discharge box 7 installed on the outer wall of the extrusion channel 5, and a drying channel 8 connected to the discharge box 7. A conveyor belt 9 for conveying materials for drying is provided inside the drying channel 8. In order to further improve the dehydration effect of the materials, a hot air blower 26 is installed on the top of the drying channel 8. The output end of the hot air blower 26 is connected to the inside of the drying channel 8, so that hot air can be blown into the drying channel 8 to dry the materials.

[0039] In order to blow hot air more evenly, the drying and dehydration unit also includes a fixed pipe connecting the discharge box 7 and the hot air blower 26. A two-way pipe 27 is installed on one side of the fixed pipe and is connected to the output end of the hot air blower 26. Air intake boxes 28 are installed at both ends of the two-way pipe 27. Both air intake boxes 28 are installed inside the drying channel 8. One side of the air intake box 28 is installed with multiple nozzles 29 arranged facing the material. The hot air can be blown to the surface of the material more evenly through the nozzles 29, thereby improving the drying effect.

[0040] Secondly, in order to further improve the dehydration effect of the material, a crushing roller 23 for crushing the extruded material is arranged inside the discharge box 7. The crushing roller 23 is rotatably installed inside the discharge box 7, and a main shaft 24 is installed on its shaft wall. One end of the crushing roller 23 passes through the discharge box 7 and is installed with a crushing motor 25. By driving the crushing motor 25, the crushing roller 23 and the main shaft 24 can be driven to rotate inside the discharge box 7, thereby crushing the material extruded at the discharge port of the extrusion channel 5.

[0041] At the same time, in order to facilitate the observation of the drying conditions inside the drying channel 8, an observation window 34 is also installed on the top of the drying channel 8. At the same time, a thermal insulation curtain 33 is installed at the discharge port of the drying channel 8 to prevent the dried material from being affected by the external cold air and reabsorbing moisture. In addition, a collection vehicle 35 is also provided below the discharge port of the drying channel 8 for collecting the dried material.

[0042] The working principle of the present invention is as follows: when in use, the modified fiberboard raw material to be dehydrated is placed in the feed table 30, and the pressing roller 31 is driven to rotate in the feed table 30 by controlling the rotary motor 32 to realize quantitative feeding of the material. After the material enters the filter cartridge 1, the feeding auger 3 is driven by the driving motor 11 to rotate in the filter cartridge 1, and the material is transported to the filter screen 2 for preliminary dehydration. The dehydrated material enters the conical head 4 and is pushed to one point to enter the extrusion channel 5. In the extrusion channel 5, the material is pushed in by the pushing mechanism. One-step extrusion dehydration, the extruded material falls into the discharge box 7, is crushed by the crushing roller 23, and falls on the conveyor belt 9 for transportation. At the same time, hot air is blown into the drying channel 8 by the hot air blower 26 to dry the material. Finally, the dried material falls on the collection vehicle 35 through the discharge port of the drying channel 8 for collection. The present invention can achieve efficient and uniform dehydration of the modified fiberboard raw materials through the coordinated use of the pre-dehydration unit, the middle enhanced dehydration unit and the drying and dehydration unit, thereby improving production efficiency and reducing production costs.

[0043] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0044] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dehydration device for modified fiberboard raw materials, comprising a dehydration device body, characterized in that: The main body of the dehydration equipment includes pre-dehydration units on both sides, a middle enhanced dehydration unit, and a drying and dehydration unit below the pre-dehydration unit. The pre-dehydration unit comprises filter cartridges (1) symmetrically arranged on both sides, filter screens (2) are installed inside the two filter cartridges (1), and a feeding screw (3) for conveying and moving materials is arranged inside the two filter screens (2). The spacing between adjacent spiral leaves on the two feeding screws (3) is arranged from large to small from the two ends to the middle, so that the materials being conveyed are squeezed more tightly; The middle enhanced dehydration unit comprises conical heads (4) respectively mounted on opposite ends of the two filter cartridges (1); an extrusion channel (5) is installed through the opposite ends of the two conical heads (4); an extrusion head (6) is slidably installed inside the extrusion channel (5); and a pushing mechanism for further extruding the material inside the extrusion channel (5) for dehydration is provided on opposite sides of the two extrusion heads (6); The drying and dehydration unit comprises a discharge box (7) installed on the outer wall of the extrusion channel (5), and a drying channel (8) and a hot air blower (26) connected to the discharge box (7) to further dry the material. A conveyor belt (9) for conveying the material for drying is provided inside the drying channel (8).

2. The dehydration device for modified fiberboard raw material according to claim 1, characterized in that: The pre-dehydration unit further comprises a drive shaft (10) installed inside the corresponding feeding auger (3), and the two drive shafts (10) are respectively rotatably installed inside the corresponding filter cartridge (1), and the opposite ends of the two drive shafts (10) respectively penetrate the corresponding filter cartridge (1) and are installed with a drive motor (11).

3. The dehydration device for modified fiberboard raw material according to claim 2, characterized in that: A water tank (13) for launching water is installed at the bottom of the two filter cartridges (1), a mounting seat (12) is installed on one side of the two water tanks (13), and the two drive motors (11) are respectively installed on the corresponding mounting seats (12).

4. The dehydration device for modified fiberboard raw material according to claim 1, characterized in that: The central enhanced dehydration unit further comprises grooves (14) respectively opened inside the corresponding extrusion heads (6), and limit springs (15) are installed inside the two grooves (14), and sliders (16) are installed at the opposite ends of the two limit springs (15) and are slidably installed inside the corresponding grooves (14).

5. The dehydration device for modified fiberboard raw material according to claim 4, characterized in that: A guide block (17) with an inclined inner wall is installed on the surface of the opposite side of the two sliding blocks (16), and a moving block (18) is slidably installed inside the two guide blocks (17). A screw block (19) is installed on one side of the two moving blocks (18). A screw rod (20) is installed on the inner thread of the screw block (19). The screw rod (20) is rotatably installed inside the extrusion channel (5), and the upper end of the screw rod (20) passes through the extrusion channel (5) and extends to the outside of the discharge box (7).

6. The dehydration device for modified fiberboard raw material according to claim 5, characterized in that: The extrusion channel (5) is provided with two movable openings (21), and two limit blocks (22) are slidably installed inside the two movable openings (21). A corresponding set of limit blocks (22) is respectively installed on the corresponding extrusion head (6) and the slider (16).

7. The dehydration device for modified fiberboard raw material according to claim 1, characterized in that: The drying and dehydration unit further comprises a fixed pipe for connecting the discharge box (7) and the hot air blower (26), a bidirectional pipe (27) is installed on one side of the fixed pipe and is connected to the output end of the hot air blower (26), air intake boxes (28) are installed on both ends of the bidirectional pipe (27), and the two air intake boxes (28) are installed inside the drying channel (8), and a plurality of nozzles (29) arranged facing the material are installed on one side of the two air intake boxes (28).

8. A dehydration device for modified fiberboard raw materials according to claims 1-7, characterized in that: A crushing roller (23) is provided just below the discharge port of the extrusion channel (5). The crushing roller (23) is rotatably mounted inside the discharge box (7). A main shaft (24) is mounted on the shaft wall of the crushing roller (23). One end of the crushing roller (23) passes through the discharge box (7) and is mounted with a crushing motor (25). The crushing motor (25) is mounted on the discharge box (7).

9. The dehydration device for modified fiberboard raw material according to claim 1, characterized in that: A feeding platform (30) is installed at the feeding port of the two filter cartridges (1), and a pressing roller (31) for quantitative feeding is rotatably installed inside the two feeding platforms (30), and a rotating motor (32) is installed at the upper end of the two pressing rollers (31).

10. The dehydration device for modified fiberboard raw material according to claim 1, characterized in that: An observation window (34) is installed on the top of the drying channel (8), a heat preservation curtain (33) is installed at the discharge port of the drying channel (8), and a collection vehicle (35) is provided below the discharge port of the drying channel (8).

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