Silicon-based fiber density board forming system and method

Abstract

Embodiments of the present invention provide a silicon-based fiber density board forming system, and a method. The system comprises: a grinding apparatus, a first metering apparatus, a conveying apparatus, a mixing apparatus, a second metering apparatus, a forming apparatus and a leveling roller, disposed in sequence along a material flow direction. The mixing apparatus comprises at least two cyclone mixing chambers arranged in series, each cyclone mixing chamber being provided with multiple glue applying apparatuses, and the glue applying apparatuses being used to spray glue powder into the cyclone mixing chambers, so as to cause glue powder to be mixed uniformly with fiber particles. The forming apparatus comprises a forming chamber, a throwing roller, an induced wind plate, multiple adjustment plates and a belt conveyor, the throwing roller and the induction wind plate each being disposed at an entrance of the forming chamber, and each adjustment plate being rotatably distributed in the forming chamber along the material flow direction. The throwing roller is used to break up a fiber-glue powder mixture, and the induced wind plate and the adjustment plates are used to adjust the flow direction of the material, so as to form a board blank on an upper surface of a belt. In the present application, the forming process has low energy consumption, and the formed density board has good uniformity.

Description

Silicon-based fiber density board forming system and method Technical Field

[0001] The embodiments of the present invention relate to the field of material technology, and in particular to a forming system and method for a silicon-based fiber density board. Background Art

[0002] Silicon-based fibers are widely available from industries like rock wool and glass wool. They are low-cost and flame-retardant. Density boards made with these fibers, particularly high-density boards, offer advantages such as high strength and excellent fire resistance.

[0003] However, the production process for silicon-based fiber density board in China is still in the exploratory stage. Some companies are experimenting with wet-process rock wool fiber density board production, but this process consumes large amounts of water and heat, and the slabs are uneven during the installation process, with the surface and uniformity of the boards uncertain. Unlike the wet process, dry-process silicon-based fiber density board production reduces water and heat consumption and utilizes airflow installation to enhance board uniformity, but this production process is still in development.

[0004] Therefore, there is an urgent need for a silicon-based fiber density board molding system and method to solve the above technical problems.

[0005] Summary of the Invention

[0006] The embodiment of the present invention provides a system and method for forming a silicon-based fiber density board, wherein the energy consumption during the forming process is low and the formed density board has good uniformity.

[0007] In a first aspect, an embodiment of the present invention provides a forming system for a silicon-based fiber density board, comprising:

[0008] A grinding device, a first metering device, a conveying device, a mixing device, a second metering device, a forming device and a leveling roller are sequentially arranged along the material flow direction;

[0009] The grinding device is used to crush the silicon-based fiber material into fiber particles smaller than a preset size;

[0010] The first metering device is used to meter and control the output of a first mass of fiber particles; the conveying device is used to convey the first mass of fiber particles to the mixing device;

[0011] The mixing device comprises at least two cyclone mixing chambers arranged in series, each of which is provided with a plurality of glue applying devices, each of which is used to spray glue powder into the corresponding cyclone mixing chamber to mix the glue powder with the fiber particles;

[0012] The second metering device is used to measure and control the output of the fiber-rubber powder mixture of the second mass;

[0013] The forming device includes a forming chamber, a spreading roller, an inducing wind plate, a plurality of adjustment plates, and a belt conveyor. The spreading roller and the inducing wind plate are respectively arranged at the entrance of the forming chamber, and each of the adjustment plates is rotatably and evenly distributed in the forming chamber along the material flow direction. The spreading roller is used to break up the fiber-rubber powder mixture, and the inducing wind plate and each of the adjustment plates are respectively used to adjust the flow direction of the material to form a slab blank on the upper surface of the belt of the belt conveyor.

[0014] The belt conveyor is used to convey the slab blank, and the leveling roller is used to press the slab blank into a density board of a preset standard.

[0015] In a second aspect, an embodiment of the present invention further provides a molding method of the molding system of the silicon-based fiber density board as described in the above embodiment, the molding method comprising:

[0016] Using a grinding device to crush the silicon-based fiber material into fiber particles smaller than a preset size;

[0017] Measuring and controlling the output of fiber particles of a first mass using a first metering device;

[0018] delivering the first mass of fiber particles to a mixing device using a delivery device;

[0019] The glue applying device is used to spray the glue powder into the cyclone mixing chamber of the mixing device so that the glue powder and the fiber particles are mixed evenly;

[0020] Using a second metering device to measure and control the output of a second mass of the fiber-rubber powder mixture;

[0021] The fiber-rubber powder mixture is formed into a layer of slab on the upper surface of the belt of the belt conveyor by using a forming device;

[0022] The slab blank is transported by a belt conveyor, and is pressed into a density board of a preset standard by a leveling roller.

[0023] The present application provides a forming system for silicon-based fiber density boards. By adopting a cyclone mixing chamber and utilizing the characteristics of the gas-solid two-phase flow in the cyclone chamber, the glue powder is sprayed in the cyclone chamber, so that the glue powder and the fiber particles are fully mixed, the glue application is maximized, the glue application efficiency is improved, the number of mixing devices used is reduced, and energy consumption is saved. By arranging a spreading roller, an inducing wind plate and multiple adjustment plates in the forming chamber, the flow of the gas-solid two-phase flow in the forming chamber can be guided and optimized, the generation of turbulent flows such as turbulence in the chamber can be reduced, and conditions can be provided for the uniform and orderly sedimentation of the fiber particles, so that the fiber-glue powder mixture is evenly stacked on the upper surface of the belt to form a uniform floor embryo. Finally, the board embryo is pressed into a density board of preset standards using a leveling roller. It can be seen that the forming process of the present application has low energy consumption and the formed density board has good uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] FIG1 is a schematic diagram of a forming system for a silicon-based fiber density board provided by one embodiment of the present invention;

[0026] FIG2 is a partial enlarged view of the material distribution machine and the material distribution machine at point A in FIG1;

[0027] Figure 3 is a right side view of Figure 2;

[0028] FIG4 is a schematic diagram of the swing of a material placing machine provided in one embodiment of the present invention.

[0029] Figure numerals: 1-grinding device; 2-first metering device; 3-conveying device; 4-mixing device; 41-glue-applying device; 42-cyclone; 43-stirring assembly; 5-second metering device; 6-molding device; 61-molding chamber; 62-throwing roller; 63-induction wind plate; 64-adjusting plate; 65-belt conveyor; 66-negative pressure bellows; 67-lifting assembly; 68-waste slag conveying assembly; 7-leveling roller; 8-transition silo 9-leveling machine; 10-distributing machine; 101-rack; 102-gear shaft; 103-distribution plate; 11-weighing device. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] As shown in FIG1 , an embodiment of the present invention provides a forming system for a silicon-based fiber density board, comprising:

[0032] A grinding device 1, a first metering device 2, a conveying device 3, a mixing device 4, a second metering device 5, a forming device 6 and a leveling roller 7 are sequentially arranged along the material flow direction;

[0033] A grinding device 1 is used to crush the silicon-based fiber material into fiber particles smaller than a preset size;

[0034] The first metering device 2 is used to measure and control the output of the first mass of fiber particles; the conveying device 3 is used to convey the first mass of fiber particles to the mixing device 4;

[0035] The mixing device 4 includes at least two cyclone mixing chambers arranged in series, each of which is provided with a plurality of glue applying devices 41, each of which is used to spray glue powder into the corresponding cyclone mixing chamber to mix the glue powder with the fiber particles.

[0036] The second metering device 5 is used for metering and controlling the output of the fiber-rubber powder mixture of the second mass;

[0037] The forming device 6 includes a forming chamber 61, a spreading roller 62, an inducing wind plate 63, a plurality of adjusting plates 64, and a belt conveyor 65. The spreading roller 62 and the inducing wind plate 63 are respectively arranged at the entrance of the forming chamber 61, and each adjusting plate 64 is rotatably distributed in the forming chamber 61 along the direction of material flow. The spreading roller 62 is used to break up the fiber-rubber powder mixture. The inducing wind plate 63 and each adjusting plate 64 are used to adjust the flow direction of the material to form a slab on the upper surface of the belt of the belt conveyor 65.

[0038] The belt conveyor 65 is used to convey the slab blanks and use the leveling rollers 7 to press the slab blanks into density boards of preset standards.

[0039] In this embodiment, by using a cyclone mixing chamber and utilizing the characteristics of the gas-solid two-phase flow within the cyclone chamber, the rubber powder is sprayed within the cyclone chamber, thereby fully mixing the rubber powder with the fiber particles, maximizing uniform glue application, improving glue application efficiency, reducing the number of mixing devices 4 used, and saving energy. By providing a spreading roller 62, an inducing wind plate 63, and multiple adjustment plates 64 within the forming chamber 61, the gas-solid two-phase flow within the forming chamber 61 can be guided and optimized, reducing the generation of turbulent flows such as turbulence within the chamber, providing conditions for the uniform and orderly sedimentation of the fiber particles, and allowing the fiber-rubber powder mixture to be evenly stacked on the upper surface of the belt, forming a uniform flooring blank. Finally, the flattening roller 7 is used to press the blank into a density board of a preset standard. Thus, the forming process of this application has low energy consumption and the formed density board has good uniformity.

[0040] Furthermore, the crushing device consists of a tearing and grinding machine. During operation, the incoming material is fed into the crushing device. Large or lumpy silicon-based fiber materials are crushed or torn into small pieces or lumps. After further processing in the grinder, the fibers are screened to the desired length. The preset size is determined by the user and is not specifically limited in this application.

[0041] In some embodiments, a transition silo 8 is further included, the inlet of the transition silo 8 is connected to the discharge port of the grinding device 1, and the outlet is connected to the inlet of the first metering device 2; the transition silo 8 is used to store the fiber particles flowing out of the grinding device 1.

[0042] By setting up a transition silo 8, the fiber particles discharged from the grinding device 1 are transported to the transition silo 8 for storage. The transition silo 8 includes a silo wall vibrator, a spiral discharge reamer, a level meter and a weighing module, which can measure the material level and weight in real time.

[0043] The first metering device 2 is located at the outlet of the transition silo 8. Material is discharged from the outlet of the transition silo 8 to the inlet of the first metering device 2. Dosed feeding is achieved by controlling the speed of the metering device. The metered material is then conveyed to the inlet of the mixing silo by the conveying device 3. The conveying device 3 is preferably pneumatic, using a high-volume fan as its power source.

[0044] In some embodiments, each cyclone mixing chamber includes a cyclone barrel 42 and a stirring assembly 43 disposed at the axis of the cyclone barrel 42, and the stirring assembly 43 is used to accelerate the mixing speed of the fiber particles and the rubber powder;

[0045] Multiple glue applying devices 41 are evenly installed in the horizontal channel at the entrance of the cyclone 42 along the horizontal direction to spray glue powder into the cyclone 42 along the horizontal direction; multiple glue applying devices 41 are evenly installed in the top of the cyclone 42 along the vertical downward direction to spray glue powder into the cyclone 42 along the vertical downward direction.

[0046] It should be noted that the more cyclone mixing bins there are, the more uniform the mixing will be, but the higher the energy consumption will be. Users can equip the corresponding number of bins according to the process requirements, and this application does not make specific restrictions. This application prefers two bins, which are respectively recorded as 1# cyclone mixing bin and 2# cyclone mixing bin. As shown in Figure 1, each cyclone mixing bin mainly includes a cyclone bin and a stirring device; a plurality of glue application devices 41 are provided inside the cyclone bin to mix the incoming material with the glue powder and stir them evenly; the final cyclone mixing bin has two discharge ports.

[0047] During operation, the airflow entrains the fiber particles, forming a gas-solid two-phase flow. It enters the inlet of the No. 1 cyclone mixing bin, where it is initially mixed with the rubber powder sprayed from the nozzle of the glue applicator 41. After entering the cyclone 42, the fiber material spirals downward around the inner wall of the cyclone 42. Simultaneously, the nozzle of the glue applicator 41 sprays the rubber powder vertically downward. The fiber material and rubber powder are remixed within the cyclone 42 and fall to the bottom of the bin. The bin is equipped with a level meter for real-time monitoring of the material level, and a weighing module for real-time material weight measurement. The bottom stirring assembly 43 is activated, and the accumulated fiber material and rubber powder mixture is further stirred and mixed. Finally, the material is discharged by the spiral discharge reamer. It then enters the No. 2 cyclone mixing bin via the pneumatic conveying device 3, where the process for the No. 1 cyclone mixing bin is repeated.

[0048] Furthermore, the glue application device 41 preferably uses a high-speed airflow to siphon the glue powder, allowing it to diffuse and spray out along with the airflow and evenly adhere to the fiber material. The amount of glue powder applied is computer-controlled and linked to the material weight output by the first metering device 2, outputting a fixed amount of glue powder according to the glue application ratio. Furthermore, the injection volume is calculated based on the weight change of the glue powder box. The glue application speed can be controlled by varying the airflow. Optionally, the ratio of the glue application amount in the first cyclone mixing chamber to the glue application amount in the second cyclone mixing chamber can be dynamically adjusted according to the production process to achieve optimal glue application results. By adjusting the airflow rate within the glue application device 41 to adjust the glue application speed, continuous material and glue powder addition is possible during production.

[0049] In some embodiments, along the material flow direction, the cyclone barrel 42 of the last stage cyclone mixing bin has two discharge ports;

[0050] Each discharge port is provided with a set of second metering devices 5; each second metering device 5 corresponds to a set of forming devices 6, which are recorded as the first forming device 6 and the second forming device 6; the belt conveyors 65 in the two sets of forming devices 6 both move in the direction of the leveling roller 7, and the flow direction of the material in the first forming device 6 is opposite to the movement direction of the belt conveyor 65, and the flow direction of the material in the second forming device 6 is the same as the movement direction of the belt conveyor 65.

[0051] In this embodiment, unlike the 1# cyclone mixing bin, the 2# cyclone mixing bin has two discharge ports, and accordingly, the second metering device 5 and the forming device 6 are also two sets.

[0052] In some embodiments, as shown in Figures 1-3, the forming system further includes two material levelers 9 and two material distributors 10; the inlet of each material leveler 9 is respectively connected to the outlet of a set of second metering devices 5, and the outlet is respectively connected to the inlet of a material distributor 10, and the outlet of each material distributor 10 is connected to the inlet of a set of forming devices 6;

[0053] Each equalizer 9 is provided with two spiral blades rotating in opposite directions on the top, so that the fiber rubber powder mixture entering the corresponding equalizer 9 is thrown from the center to both sides through the spiral blades; each equalizer 9 is provided with a rectangular discharge port at the bottom, and the discharge port is provided with a plurality of movable inserts. By adjusting the gap between adjacent inserts, the fiber rubber powder mixture can be evenly discharged from the discharge port of the equalizer 9;

[0054] Each material distribution machine 10 includes a rack 101, multiple gear shafts 102, multiple distribution plates 103 and a driving device; wherein the driving device is used to drive the rack 101 to move back and forth, each gear shaft 102 is respectively connected to the rack 101, and one end of each distribution plate 103 is respectively connected to the corresponding gear shaft 102, and each gear shaft 102 drives the corresponding distribution plate 103 to swing back and forth around its axis.

[0055] In this embodiment, the material in the 2# cyclone mixing bin is discharged from the left and right discharge ports in turn and enters the second metering device 5. The quantitative feeding is achieved by controlling the rotation speed of the second metering device 5. It can be linked with the subsequent weighing device 11 to achieve closed-loop control of the conveying material amount.

[0056] After the material enters the material distributor 9, the rotating blades transport the material from the middle discharge port to both sides, and the material falls toward the rectangular discharge port below while moving to both sides; by adjusting the outlet gap of the rectangular discharge port plug plate, the amount of material falling there can be roughly controlled, and by adjusting the hinge shaft speed, the material can be evenly discharged from the rectangular discharge port in the length direction, realizing the equal distribution function.

[0057] The material with basically uniform distribution falls into the material distribution machine 10 from the above-mentioned rectangular discharge port; as shown in Figures 2 to 4, the driving device (such as a servo transmission device, the speed of which can be adjusted programmably) drives the rack 101 to reciprocate, and the gear shaft 102 drives the distribution plate 103 to swing back and forth around the axis; the material is sandwiched between the two distribution plates 103 and follows the swing. Driven by the inlet airflow, the material is evenly spread on the throwing roller 62 of the forming chamber 61 (in the width direction) to ensure the uniformity of the subsequent slab in the width direction; in addition, the swing speed of the driving device is adjustable.

[0058] In some embodiments, a plurality of through holes are provided on the belt of the belt conveyor 65; a plurality of negative pressure bellows 66 are sequentially provided below the belt along the direction of movement of the belt conveyor 65, and a valve is provided at the inlet of each negative pressure bellows 66, and each valve is connected to an external air jet device;

[0059] Each negative pressure bellows 66 is provided with a plurality of air extraction ports on the side close to the belt; for each negative pressure bellows 66, the air extraction volume is adjusted by adjusting the opening of its inlet valve to adjust the thickness of the slab at the belt above it.

[0060] In this embodiment, a negative pressure blower is activated within the forming chamber 61 of the first forming device 6. The negative pressure bellows 66 creates a negative pressure, drawing air from the forming chamber 61 through holes in the belt, creating an airflow in the opposite direction of the belt's conveyance. Driven by gravity and airflow, the material is first further dispersed by the rotating spreading roller 62. The induction air plate 63 then cooperates to create a more uniform gas-solid two-phase flow toward the belt. Adjusting the height and angle of the regulating plate 64 and activating the air injection device reduce turbulence within the forming chamber 61, ensuring a more uniform airflow toward the belt surface (horizontally, this flows in the opposite direction of the belt's conveyance), promoting uniform slab formation. Within the forming chamber 61, under the influence of gravity and wind drag, large fibers first settle near the spreading roller 62, while small fibers drift further to the left, away from the spreading roller 62, forming a slab layer with finer fibers at the bottom and coarser fibers at the top. Adjusting the opening of each valve in the negative pressure bellows 66 optimizes the thickness and uniformity of the sedimentation at different locations on the belt. The specific process is as follows: the belt is divided into several sub-areas along its direction of movement, and the slab thickness of each sub-area is measured in real time. When the slab thickness of a sub-area is greater than the set value, the valve opening is reduced to reduce the settlement of the material in that sub-area. When the slab thickness of a sub-area is less than the set value, the valve opening is increased to increase the settlement of the material in that sub-area.

[0061] In some embodiments, the forming device 6 further includes a lifting assembly 67 and a waste residue conveying assembly 68;

[0062] The lifting assembly 67 is used to raise or lower the top plate of the molding chamber 61;

[0063] The waste residue conveying assembly 68 is arranged below the scattering roller 62 and is used to transport the large fiber clumps that fall from below the scattering roller 62 out of the forming chamber 61 and return them to the grinding device 1 for recycling.

[0064] In this embodiment, by adjusting the lifting assembly 67, the wind cross-sectional area of ​​the forming chamber 61 can be controlled, further increasing the uniformity of the air flow, which is beneficial to the uniformity of the slab; the fiber clusters that are too large below the throwing roller 62 are transported out of the forming chamber 61 by the waste recycling conveying device 3 and returned to the crushing and grinding area for recycling.

[0065] In some embodiments, each adjustment plate 64 has a hollow chamber, and each chamber is in communication with external compressed air;

[0066] A plurality of holes with filter screens are provided on the surface of each adjustment plate 64 so as to eject the compressed air in the chamber of the adjustment plate 64 through the holes.

[0067] It should be noted that the operating principle within the forming chamber 61 of the second forming device 6 is the same as that of the first forming device 6. However, due to a different layout, the airflow direction within the forming chamber 61 aligns with the conveying direction of the belt. Similarly, a layer of fiber layers with varying particle sizes, coarse at the bottom and fine at the top, forms on the belt. This layer accumulates on the board emerging from the forming chamber 61, resulting in a board with varying particle sizes, fine at the bottom, coarse in the middle, and fine at the top. This board structure is ideal.

[0068] The slab passes through the leveling roller 7, which can level the low or thick parts of the slab. A dust collecting device is provided above the brush roller.

[0069] In some embodiments, a weighing device 11 is also included. The density board passing through the leveling roller 7 passes through a weighing machine, which can accurately measure the surface density of the board blank in real time, form a closed loop with the above-mentioned second metering device 5, and adjust the discharge speed of the second metering device 5 to ensure that the surface density of the board blank is within a reasonable range.

[0070] Finally, the weighed density board can enter the subsequent pressing and trimming processes.

[0071] The forming system provided in this application conforms to the aerodynamic design, which not only can achieve uniform forming of the slab blank, but also helps to reduce energy loss and is suitable for large-scale continuous production.

[0072] An embodiment of the present invention further provides a method for forming a silicon-based fiber density board forming system as in any of the above embodiments, the method comprising:

[0073] The silicon-based fiber material is crushed into fiber particles smaller than a preset size by using the grinding device 1;

[0074] Utilizing the first metering device 2 to meter and control the output of fiber particles of a first mass;

[0075] The first mass of fiber particles is conveyed to the mixing device 4 by means of the conveying device 3;

[0076] The glue applying device 41 is used to spray the glue powder into the cyclone mixing chamber of the mixing device 4 so that the glue powder and the fiber particles are mixed evenly;

[0077] Utilizing the second metering device 5 to meter and control the output of the fiber-rubber powder mixture of the second mass;

[0078] The fiber-rubber powder mixture is formed into a layer of slab on the upper surface of the belt of the belt conveyor 65 by the forming device 6;

[0079] The slab blank is transported by a belt conveyor 65 and is pressed into a density board of a preset standard by a leveling roller 7 .

[0080] It is understandable that the forming system of the silicon-based fiber density board provided in this embodiment and the forming method of the silicon-based fiber density board provided in the above embodiment have the same beneficial effects, which will not be described in detail here.

[0081] It should be noted that, in this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical factors in the process, method, article or device comprising the elements.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A forming system for a silicon-based fiber density board, characterized in that, Including: A grinding device (1), a first metering device (2), a conveying device (3), a mixing device (4), a second metering device (5), a forming device (6) and a leveling roller (7) are arranged in sequence along the material flow direction; The grinding device (1) is used for crushing the silicon-based fiber material into fiber particles smaller than a preset size; The first metering device (2) is used for metering and controlling the output of fiber particles of a first mass; the conveying device (3) is used for conveying the fiber particles of the first mass to the mixing device (4); The mixing device (4) includes at least two cyclone mixing bins arranged in series. A plurality of sizing devices (41) are arranged in each cyclone mixing bin. Each sizing device (41) is respectively used for spraying sizing powder into the corresponding cyclone mixing chamber to mix and blend the sizing powder with the fiber particles; The second metering device (5) is used for metering and controlling the output of a fiber sizing powder mixture of a second mass; The forming device (6) includes a forming chamber (61), a spreading roller (62), an induced air plate (63), a plurality of adjusting plates (64) and a belt conveyor (65). The spreading roller (62) and the induced air plate (63) are respectively arranged at the entrance of the forming chamber (61). Each adjusting plate (64) is rotatably and evenly distributed in the forming chamber (61) along the material flow direction; the spreading roller (62) is used for dispersing the fiber sizing powder mixture, and the induced air plate (63) and each adjusting plate (64) are respectively used for adjusting the material flow direction to form a board blank on the upper surface of the belt of the belt conveyor (65); The belt conveyor (65) is used for conveying the board blank and pressing the board blank into a density board of a preset standard by using the leveling roller (7).

2. The system according to claim 1, characterized in that It further includes a transition silo (8). The inlet of the transition silo (8) is connected to the outlet of the grinding device (1), and the outlet is connected to the inlet of the first metering device (2); the transition silo (8) is used for storing the fiber particles flowing out of the grinding device (1).

3. The system according to claim 1, wherein Each cyclone mixing bin includes a cyclone cylinder (42) and a stirring assembly (43) arranged at the axis of the cyclone cylinder (42). The stirring assembly (43) is used for accelerating the mixing speed of the fiber particles and the sizing powder; A plurality of the sizing devices (41) are evenly installed in the horizontal channel at the inlet of the cyclone cylinder (42) along the horizontal direction to spray sizing powder into the cyclone cylinder (42) along the horizontal direction; a plurality of the sizing devices (41) are evenly installed at the top of the cyclone cylinder (42) along the vertically downward direction to spray sizing powder into the cyclone cylinder (42) along the vertically downward direction.

4. The system according to claim 3, wherein Along the material flow direction, the cyclone cylinder (42) of the last-stage cyclone mixing bin has two outlets; A set of the second metering device (5) is provided at each of the discharge ports; each set of the second metering device (5) corresponds to a set of forming devices (6), denoted as the first forming device (6) and the second forming device (6); in both sets of forming devices (6), the belt conveyors (65) all move towards the direction where the leveling roller (7) is located, and the flow direction of the material in the first forming device (6) is opposite to the movement direction of the belt conveyor (65), while the flow direction of the material in the second forming device (6) is the same as the movement direction of the belt conveyor (65).

5. The system according to claim 4, wherein The system further includes two material leveling machines (9) and two material distributing machines (10); the inlet of each material leveling machine (9) is respectively connected to the outlet of a set of the second metering device (5), and the outlet is respectively connected to the inlet of a material distributing machine (10), and the outlet of each material distributing machine (10) is connected to the inlet of a set of forming device (6); Two spiral blades with opposite spiral directions are provided on the upper part of each material leveling machine (9) to scatter the fiber rubber powder mixture entering the corresponding material leveling machine (9) from the center to both sides through the spiral blades; a rectangular discharge port is provided at the bottom of each material leveling machine (9), and the discharge port is provided with a plurality of movable plug boards, and by adjusting the gap between adjacent plug boards, the fiber rubber powder mixture can be evenly discharged from the discharge port of the material leveling machine (9); Each material distributing machine (10) includes a rack (101), a plurality of gear shafts (102), a plurality of distribution plates (103) and a driving device; wherein, the driving device is used to drive the rack (101) to move back and forth, each gear shaft (102) is respectively connected to the rack (101), one end of each distribution plate (103) is respectively connected to the corresponding gear shaft (102), and each gear shaft (102) respectively drives the corresponding distribution plate (103) to swing back and forth around its axis.

6. The system according to claim 1, wherein A plurality of through holes are provided on the belt of the belt conveyor (65); along the movement direction of the belt conveyor (65), a plurality of negative pressure air boxes (66) are sequentially arranged below the belt, and a valve is provided at the inlet of each negative pressure air box (66), and each valve is respectively connected to an external jet device; A plurality of air extraction ports are provided on one side of each negative pressure air box (66) close to the belt; for each negative pressure air box (66), the air extraction volume is adjusted by adjusting the opening degree of the inlet valve thereof to adjust the thickness of the slab at the belt above it.

7. The system according to claim 1, characterized in that The forming device (6) further includes a lifting assembly (67) and a waste residue conveying assembly (68); The lifting assembly (67) is used to raise or lower the top plate of the forming chamber (61); The waste residue conveying assembly (68) is arranged below the spreading roller (62) and is used to transport the large fiber clusters falling from below the spreading roller (62) out of the forming chamber (61) and return them to the grinding device (1) for recycling.

8. The system according to claim 1, wherein Each regulating plate (64) has a hollow chamber, and each chamber is communicated with external compressed air; A plurality of holes with filter meshes are provided on the surface of each of the regulating plates (64) to eject the compressed air in the chamber of the regulating plate (64) from the holes.

9. The system according to claim 1, characterized in that, It further includes a weighing device (11) for measuring the density of the density board obtained from the leveling roller (7).

10. A forming method of a forming system for a silicon-based fiber density board according to any one of claims 1-9, characterized in that, The forming method includes: Using a grinding device (1) to crush the silicon-based fiber material into fiber particles smaller than a preset size; Using a first metering device (2) to meter and control the output of fiber particles of a first mass; Using a conveying device (3) to convey the fiber particles of the first mass to a mixing device (4); Using a sizing device (41) to spray powder glue into the cyclone mixing bin of the mixing device (4) so that the powder glue is mixed and homogenized with the fiber particles; Using a second metering device (5) to meter and control the output of a fiber glue powder mixture of a second mass; Using a forming device (6) to form a board blank on the upper surface of the belt of a belt conveyor (65) from the fiber glue powder mixture; Using the belt conveyor (65) to convey the board blank and using a leveling roller (7) to press the board blank into a density board of a preset standard.

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