An apparatus and method for preparing an antibacterial hydrophobically modified wood fiber

Abstract

This invention relates to the field of drying tank technology, specifically to a device and method for preparing antibacterial and hydrophobic modified wood fiber. The device includes a tank containing antibacterial and hydrophobic modified wood fiber raw materials. A cover is installed on the top of the tank, and a servo motor unit is fixed to the top of the cover. A rotating shaft is rotatably connected to the bottom of the servo motor unit, and multiple blades are fixed to the surface of the rotating shaft. The beneficial effects are: the innovative design significantly improves the performance and production efficiency of the antibacterial and hydrophobic modified wood fiber preparation device; the dynamic gas distribution system, combined with the internal channel of the rotating shaft and the gas collection groove structure of the blades, allows high-temperature gas to diffuse with the stirring spiral, ensuring uniform heating of the raw materials and improving modification consistency; the modular anti-clogging protection structure uses a combination of detachable buckles and metal mesh to effectively block debris from entering the gas channel, while also enabling quick disassembly and cleaning, shortening maintenance time.

Description

Technical Field

[0001] This invention relates to the field of drying tanks, specifically to an apparatus and method for preparing antibacterial and hydrophobic modified wood fibers. Background Technology

[0002] In the industrial production of antibacterial and hydrophobic modified wood fibers, traditional preparation equipment generally suffers from key problems such as poor uniformity of thermal modification, easy clogging of air vents, low equipment maintenance efficiency, and insufficient dynamic sealing reliability. Existing equipment often relies on fixed nozzles on the side walls or top to inject high-temperature gas, resulting in uneven gas distribution, localized overheating or underheating of raw materials, and affecting product performance consistency. During the mixing process, raw material debris can easily enter the gas channel through the vent holes, causing accumulation and blockage, requiring frequent shutdowns for cleaning, increasing production costs. Protective structures (such as filters) are mostly fixed installations, which are difficult to disassemble and cannot be thoroughly cleaned. After long-term use, the residual corrosion can lead to a decrease in sealing performance. Mechanical seals or packing seals at the connection between the shaft and the tank are prone to leakage due to friction and wear under high-temperature and high-pressure conditions, resulting in poor stability. In addition, uneven gas distribution and frequent shutdowns for cleaning also lead to energy waste and raw material loss, resulting in low overall production efficiency.

[0003] The aforementioned defects severely restrict the large-scale, high-quality production of antibacterial and hydrophobic wood fibers, and urgently need to be addressed through technological innovation. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for preparing antibacterial and hydrophobic modified wood fibers, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a preparation device for antibacterial and hydrophobic modified wood fiber, comprising a tank, the inside of which is filled with antibacterial and hydrophobic modified wood fiber raw material, a cover installed on the top of the tank, a servo motor unit fixed on the top of the cover, a rotating shaft rotatably connected to the bottom of the servo motor unit, and multiple blades fixed on the surface of the rotating shaft. The bottom of the rotating shaft is provided with a reserved groove, and an air injection pipe is inserted into the bottom of the reserved groove. The air injection pipe is inserted and fixed to the bottom plate of the tank. The surface of the blade is provided with an air collection groove, and the surface of the rotating shaft is provided with a through hole that connects to the air collection groove. The top and bottom surfaces of the air collection groove are provided with multiple air dissipation holes. One end of the blade is fitted with a buckle plate, and the surface of the buckle plate has an installation opening. A metal mesh is fixed inside the installation opening, and the metal mesh covers the air vents.

[0006] Preferably, a discharge pipe with a detachable closed cover is inserted and fixed on one side of the bottom of the tank body. The detachable closed cover and the discharge pipe are sleeved and screwed. A pressure relief valve pipe is inserted and fixed on one side of the top of the tank body. The tank body and the servo motor unit are connected by flanges and bolts. Multiple legs are fixed at the bottom of the tank body. A feeding port is installed on the top of the cover body, and a protective cover is sleeved and screwed on the top of the feeding port.

[0007] Preferably, the reserved groove is a "convex"-shaped circular groove. The outer ring of the sealed bearing is fixed at the bottom end of the reserved groove. Multiple reinforcing ribs are fixed on the surface of the air injection pipe, and the bottom surface of the reinforcing ribs is fixed on the bottom plate of the tank body.

[0008] Preferably, the depth of the air collection groove is less than the plate length of the blade. Edge grooves are opened on both the top surface and the bottom surface of the air collection groove. The length of the long side of the edge groove is less than the plate length of the blade. The buckle plate is a "C"-shaped plate structure. The two parallel side plates of the buckle plate are respectively inserted into the two edge grooves. Two rubber gaskets are fixed on the surface of the buckle plate. The rubber gaskets are "C"-shaped plate structures and are elastically deformed between the buckle plate and the blade.

[0009] Preferably, a slot is opened on one side of the edge groove. The width of the slot is less than the width of the edge groove. An insertion block is inserted into the slot, and the insertion block is fixed on the surface of the buckle plate.

[0010] Preferably, clamping grooves are opened on the two parallel side plates of the buckle plate. Elastic traction pieces are fixed on the surface of the edge groove. A clamping bar is fixed at one end of the elastic traction piece. The clamping bar is a right-angled trapezoidal bar and is inserted into the clamping groove. A picking piece is fixed on the side of one end of the elastic traction piece facing away from the clamping bar. The picking piece is an "L"-shaped piece.

[0011] Preferably, a through hole is opened at one end of the buckle plate. A screw rod is inserted into the through hole. One end of the screw rod is fixed at the end of the blade, and the other end of the screw rod is sleeved and screwed with a gasket and a nut.

[0012] A method for using a preparation device for antibacterial and hydrophobic modified wood fibers includes the following steps: First, connect the bottom of the air injection pipe to a high-temperature drying gas delivery pipe body. After putting the antibacterial and hydrophobic modified wood fibers into the tank body, drive the rotating shaft by the servo motor unit to带动 the blade to mix the antibacterial and hydrophobic modified wood fiber raw materials. During this process, the high-temperature gas generating device injects high-temperature gas into the reserved groove through the air injection pipe and enters the air collection groove through the through hole, and then scatters into the antibacterial and hydrophobic modified wood fiber raw materials through the air dispersion holes. Since multiple blades are provided and rotate with the rotating shaft, uniform drying of the antibacterial and hydrophobic modified wood fibers is achieved.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The apparatus and method for preparing antibacterial and hydrophobic modified wood fibers proposed in this invention significantly improve the performance and production efficiency of the apparatus through innovative design: the dynamic gas distribution system, combined with the internal channel of the rotating shaft and the gas collection groove structure of the blades, allows high-temperature gas to diffuse with the stirring spiral, ensuring uniform heating of the raw materials and improving the consistency of modification; the modular anti-clogging protection structure adopts a combination of detachable buckles and metal mesh, effectively blocking debris from entering the gas channel, while achieving quick disassembly and cleaning, shortening maintenance time; the high-reliability dynamic seal reduces friction leakage and extends equipment life through the "convex" shaped reserved groove and sealed bearing design; in terms of energy saving optimization, uniform thermal modification reduces energy waste, the anti-clogging structure reduces raw material loss, and the overall production efficiency is improved, providing reliable technical support for large-scale, high-quality production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Sectional view of the structure at point A in the middle; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point D; Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point E in the middle; Figure 7 This is a schematic diagram of the connection structure between the blade and the buckle plate of the present invention; Figure 8 This is a schematic diagram of the buckle structure of the present invention; Figure 9 This is a schematic diagram of the blade structure of the present invention.

[0015] In the diagram: Tank 1, Cover 101, Feeding port 102, Discharge pipe 103, Pressure relief valve pipe 104, Servo motor unit 2, Rotating shaft 3, Reserved slot 301, Through hole 302, Sealed bearing 303, Air injection pipe 4, Reinforcing rib 401, Blade 5, Air collection groove 501, Air dispersing hole 502, Side groove 503, Slot 504, Screw 505, Nut 506, Buckle plate 6, Insert block 601, Card slot 602, Perforation 603, Rubber gasket 604, Mounting port 605, Metal mesh 606, Elastic traction plate 7, Locking strip 701, Picking piece 702. Detailed Implementation

[0016] In order to clearly and completely describe the objectives, technical solutions of the present invention and make the advantages more clearly understood, the following further elaborates on the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. <> <>

[0017] Example 1. Please refer to <> Figures 1-9 , the present invention provides a technical solution: a preparation device for antibacterial hydrophobic modified wood fiber, including a tank body 1. The interior of the tank body 1 contains raw materials for antibacterial hydrophobic modified wood fiber. A cover body 101 is installed on the top of the tank body 1. A servo motor unit 2 is fixed on the top of the cover body 101. The bottom end of the servo motor unit 2 is rotationally connected to a rotating shaft 3. Multiple blades 5 are fixed on the surface of the rotating shaft 3. On one side of the bottom of the tank body 1, a discharge pipe 103 with a detachable closed cover is inserted and fixed. The detachable closed cover and the discharge pipe 103 are sleeved and screwed. On one side of the top of the tank body 1, a pressure relief valve pipe 104 is inserted and fixed. The tank body 1 and the servo motor unit 2 are connected by flanges and bolts. Multiple legs are fixed at the bottom of the tank body 1. A feeding port 102 is installed on the top of the cover body 101. A protective cover is sleeved and screwed on the top of the feeding port 102. <> <>

[0018] During the production of antibacterial hydrophobic modified wood fiber, it is necessary to crush and dry and stir sugarcane residues and wood chips. That is, the crushed sugarcane residues and wood chips are put into the tank body 1 through the feeding port 102, triggering the switch of the servo motor unit 2 to drive the rotation of the rotating shaft 3. The shaft body of the servo motor unit 2 penetrates through the top plate of the cover body 101 and is fixed to the top end of the rotating shaft 3 through a coupling. The rotating shaft 3 rotates synchronously with the shaft body of the servo motor unit 2, and the rotating shaft 3 drives the blades 5 to stir the sugarcane residues and wood chips. <> <>

[0019] In order to evenly introduce high-temperature gas into the tank body 1 during the stirring of the sugarcane residues and wood chips by the blades 5, it is proposed that: <> A reserved groove 301 is opened at the bottom of the rotating shaft 3. An air injection pipe 4 is inserted at the bottom of the reserved groove 301. The air injection pipe 4 is inserted and fixed on the bottom plate of the tank body 1. An air collection groove 501 is opened on the surface of the blade 5. A through hole 302 connecting the air collection groove 501 is opened on the surface of the rotating shaft 3. Multiple air dispersion holes 502 are opened on the top and bottom surfaces of the air collection groove 501. The reserved groove 3 01 is a "convex" shaped circular groove. The outer ring of the sealing bearing 303 is fixed at the bottom end of the reserved groove 301. Multiple reinforcing ribs 401 are fixed on the surface of the air injection pipe 4. The bottom surface of the reinforcing ribs 401 is fixed on the bottom plate of the tank body 1. <> <>

[0020] Pre-connect the gas delivery pipe of the high-temperature gas generating equipment to the bottom end of the injection pipe 4. When the rotating shaft 3 drives the blades 5 to stir the sugarcane residues and wood chips, the high-temperature gas generating equipment starts to work, injecting high-temperature gas into the gas collection tank 501 through the injection pipe 4 and the rotating shaft 3, and evenly dispersing it into the stirred sugarcane residues and wood chips through the air dispersion holes 502.

[0021] In order to reduce the situation where the air dispersion holes 502 are blocked and the sugarcane residues and wood chips enter the gas collection tank 501, the following is proposed: One end of the blade 5 is sleeved with a buckle plate 6. The surface of the buckle plate 6 is provided with an installation opening 605. Inside the installation opening 605, a metal mesh 606 is fixed, and the metal mesh 606 covers the air dispersion holes 502; the depth of the gas collection tank 501 is less than the plate length of the blade 5. Both the top surface and the bottom surface of the gas collection tank 501 are provided with side grooves 503. The length of the long side of the side groove 503 is less than the plate length of the blade 5. The buckle plate 6 is in a "C" - shaped plate structure. The two parallel side plates of the buckle plate 6 are respectively inserted into the two side grooves 503. On the surface of the buckle plate 6, two rubber gaskets 604 are fixed. The rubber gaskets 604 are in a "C" - shaped plate structure. The rubber gaskets 604 are clamped between the buckle plate 6 and the blade 5 and undergo elastic deformation; one side of the side groove 503 is provided with a slot 504. The width of the slot 504 is less than the width of the side groove 503. Inside the slot 504, an insertion block 601 is inserted, and the insertion block 601 is fixed on the surface of the buckle plate 6; on both of the two parallel side plates of the buckle plate 6, clamping grooves 602 are provided. On the surface of the side groove 503, an elastic traction piece 7 is fixed. One end of the elastic traction piece 7 is fixed with a clamping bar 701. The clamping bar 701 is in a right - angled trapezoidal strip shape. The clamping bar 701 is inserted into the clamping groove 602. One end of the elastic traction piece 7 is fixed with a picking piece 702 on the side opposite to the clamping bar 701. The picking piece 702 is in an "L" - shaped piece; one end of the buckle plate 6 is provided with a through - hole 603. Inside the through - hole 603, a screw rod 505 is inserted. One end of the screw rod 505 is fixed at the end of the blade 5, and the other end of the screw rod 505 is sleeved and screwed with a gasket and a nut 506.

[0022] The metal mesh 606 covers the air dispersion holes 502, preventing the sugarcane residues and wood chips from entering the gas collection tank 501 through the air dispersion holes 502 and allowing the high - temperature gas inside the gas collection tank 501 to disperse. When the metal mesh 606 needs to be cleaned, after removing the bolts of the cover body 101 and the tank body 1, the cover body 101 is pulled out from the top of the tank body 1. At this time, the rotating shaft 3 and the blade 5 are exposed. After removing the nut 506, fingers are placed on the picking piece 702 to pull the elastic traction piece 7 to deform until the clamping bar 701 is pulled out from the clamping groove 602, and then the buckle plate 6 is pulled out from the blade 5. The removed buckle plate 6 is cleaned.

[0023] Example 2, based on Example 1, proposes a usage method for a preparation device of antibacterial and hydrophobic modified wood fibers, including the following steps: Crush the sugarcane residues and wood chips to have a uniform particle size, and reduce the moisture content to below 8% through a drying device. Insert the "C"-shaped side plate of the buckle plate 6 into the side groove 503 of the blade 5 in advance, ensuring that the insert block 601 is completely embedded in the slot 504. Pull the picking piece 702 of the elastic traction piece 7 to make the clamping strip 701 snap into the clamping groove 602, and confirm that the rubber gasket 604 elastically deforms to fill the gap. Pass the screw rod 505 through the through hole 603, sequentially sleeve on the gasket and the nut 506 and tighten them to fix the position of the buckle plate 6.

[0024] Open the protective cover of the feeding port 102, put the pretreated sugarcane residues and wood chips into the tank body 1, close the protective cover and lock it. Trigger the switch of the servo motor unit 2, and the rotating shaft 3 drives the blade 5 to rotate through the coupling, and the stirring speed is set to 50 - 200 revolutions per minute. Start the high-temperature gas generating equipment and adjust the output temperature to 300 - 400 °C. The high-temperature gas enters the reserved groove 301 through the injection pipe 4, and enters the air collecting groove 501 through the internal channel and through hole 302 of the rotating shaft 3. The gas evenly disperses into the raw materials from the air dispersion holes 502 for 5 - 15 minutes. Observe the pressure gauge of the tank body 1 in real time. If the pressure is close to the safety threshold, manually open the pressure relief valve pipe 104 to release some gas. Turn off the servo motor unit 2, and wait until the blade 5 completely stops rotating, then turn off the high-temperature gas generating equipment. Let the tank body 1 stand still until the internal temperature drops below 60 °C. Rotate and remove the detachable closed cover of the discharge pipe 103 to discharge the modified wood fiber. If the discharge is not smooth, the tank body 1 can be slightly vibrated or auxiliary tools can be used to dredge it.

[0025] Remove the connecting bolts between the cover body 101 and the tank body 1, and take out the rotating shaft 3 and the blade 5 assembly. Loosen the nut 506, remove the gasket and pull out the screw rod 505. Pull the picking piece 702 to make the clamping strip 701 disengage from the clamping groove 602, and pull out the buckle plate 6 upward. Use a soft brush to remove the fiber debris attached to the surface of the metal mesh 606, and if necessary, blow it with compressed air.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An apparatus for preparing antibacterial hydrophobic modified wood fibers, comprising a tank body (1). The interior of the tank body (1) contains raw materials of antibacterial hydrophobic modified wood fibers. A cover body (101) is installed on the top of the tank body (1). A servo motor unit (2) is fixed on the top of the cover body (101). The bottom end of the servo motor unit (2) is rotatably connected to a rotating shaft (3). A plurality of blades (5) are fixed on the surface of the rotating shaft (3); Its features are: A reserved groove (301) is formed at the bottom of the rotating shaft (3). An air injection pipe (4) is inserted at the bottom of the reserved groove (301). The air injection pipe (4) is fixedly inserted on the bottom plate of the tank body (1). An air collecting groove (501) is formed on the surface of the blade (5). A through hole (302) communicating with the air collecting groove (501) is formed on the surface of the rotating shaft (3). A plurality of air dispersion holes (502) are formed on both the top and bottom surfaces of the air collecting groove (501); A buckle plate (6) is sleeved at one end of the blade (5). An installation opening (605) is formed on the surface of the buckle plate (6). A metal mesh sheet (606) is fixed inside the installation opening (605). The metal mesh sheet (606) covers the air dispersion holes (502).

2. The apparatus for preparing antibacterial and hydrophobic modified lignocellulose according to claim 1, characterized in that: At one side of the bottom of the tank body (1), a discharge pipe (103) with a detachable closed cover is fixedly inserted. The detachable closed cover and the discharge pipe (103) are sleeved and screwed. At one side of the top of the tank body (1), a pressure relief valve pipe (104) is fixedly inserted. The tank body (1) and the servo motor unit (2) are connected by flanges and bolts. A plurality of legs are fixed at the bottom of the tank body (1). A feeding port (102) is installed on the top of the cover body (101). A protective cover is sleeved and screwed on the top of the feeding port (102).

3. The apparatus for preparing antibacterial and hydrophobic modified lignocellulose according to claim 1, characterized in that: The reserved groove (301) is a "convex”-shaped circular groove. The outer ring of a sealing bearing (303) is fixed at the bottom end of the reserved groove (301). A plurality of reinforcing ribs (401) are fixed on the surface of the air injection pipe (4). The bottom surface of the reinforcing ribs (401) is fixed on the bottom plate of the tank body (1).

4. The apparatus for preparing antibacterial and hydrophobic modified lignocellulose according to claim 1, characterized in that: The depth of the air collecting groove (501) is less than the plate length of the blade (5). Edge grooves (503) are formed on both the top and bottom surfaces of the air collecting groove (501). The length of the long side of the edge groove (503) is less than the plate length of the blade (5). The buckle plate (6) is a "C”-shaped plate structure. The two parallel side plates of the buckle plate (6) are respectively inserted into the two edge grooves (503). Two rubber gaskets (604) are fixed on the surface of the buckle plate (6). The rubber gaskets (604) are "C”-shaped plate structures. The rubber gaskets (604) are clamped between the buckle plate (6) and the blade (5) and undergo elastic deformation.

5. The apparatus for preparing antibacterial and hydrophobic modified lignocellulose according to claim 4, characterized in that: A slot (504) is formed on one side of the edge groove (503). The width of the slot (504) is less than the width of the edge groove (503). An insertion block (601) is inserted into the slot (504). The insertion block (601) is fixed on the surface of the buckle plate (6).

6. The apparatus for preparing antibacterial and hydrophobic modified lignocellulose according to claim 5, characterized in that: The buckle plate (6) has slots (602) on both parallel side plates. An elastic traction piece (7) is fixed on the surface of the side slot (503). A clip (701) is fixed at one end of the elastic traction piece (7). The clip (701) is a right-angled trapezoidal strip and is inserted into the slot (602). A prying piece (702) is fixed at one end of the elastic traction piece (7) on the side opposite to the clip (701). The prying piece (702) is an "L" shaped piece.

7. The apparatus for preparing antibacterial and hydrophobic modified lignocellulose according to claim 1, characterized in that: One end of the buckle plate (6) has a through hole (603), and a screw (505) is inserted into the through hole (603). One end of the screw (505) is fixed to the end of the blade (5), and the other end of the screw (505) is fitted with a washer and a nut (506).

8. A method of using an apparatus for preparing antibacterial and hydrophobic modified wood fibers, employing the apparatus for preparing antibacterial and hydrophobic modified wood fibers according to any one of claims 1-7, characterized in that: The method includes the following steps: The bottom of the gas injection pipe (4) is connected to the high-temperature drying gas delivery pipe. After the antibacterial hydrophobic modified wood fiber is put into the tank (1), the rotating shaft (3) is driven by the servo motor unit (2) to drive the blades (5) to mix the antibacterial hydrophobic modified wood fiber raw material. During this process, the high-temperature drying gas generator injects high-temperature gas into the reserved groove (301) through the gas injection pipe (4) and enters the gas collection groove (501) through the through hole (302). It is dispersed into the antibacterial hydrophobic modified wood fiber raw material through the gas dispersing hole (502). Since there are multiple blades (5), and they rotate with the rotating shaft (3), the antibacterial hydrophobic modified wood fiber is dried evenly.

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