A-grade Fireproof Insulation Panel Surface Layer and Fixing Method

The silicon rock board production line mainly consists of three parts: batching, vacuum adsorption assembly line, and vacuum separation. The vacuum adsorption assembly line uses negative pressure permeation to penetrate fireproof materials into foam boards, thereby improving fire resistance ratings and increasing board strength, meeting the various index parameters of Class A boards. The assembly line is subdivided into three parts: the main machine, the board feeding machine, and the board discharging machine. The board machine employs roller drive and variable frequency speed regulation design, allowing for speed ratio adjustments based on production needs, thus achieving synchronization between the board feeding machine and the main machine. This resolves issues where the belt conveying the boards may wear out during production, and changes in line speed caused by the bonding of slurry to the belt drive shaft can lead to boards not moving in a straight line or jamming. The main machine can be further divided into three parts: the drive and adsorption belt, the discharging device, and the vacuum box. The drive and adsorption belt is made of pure rubber and manufactured with grooved molds to ensure the belt's service life and accuracy. The design includes baffles on both sides to allow for adjustable production dimensions while completely resolving the issue of material leakage through the replacement of materials at the bottom of the baffles. Many manufacturers use skirt designs on belts to solve the leakage issue, but this often sacrifices dimension adjustability. The unique design of the discharging device completely resolves uneven material discharge and splashing issues, ensuring that the quality of the produced boards remains balanced and stable while keeping the operating area clean and tidy. Traditional vacuum boxes are often large and cumbersome, prone to poor sealing and collapse of the adsorption belt, leading to uneven or broken board penetration. Our company's designers improved this by adopting a water seal approach, which not only enhances the sealing of the vacuum box but also reduces friction between it and the belt. The vacuum separation serves to recover slurry and prevent backflow. Separators with unreasonable design layouts often face issues of incomplete separation, with slurry returning to the vacuum pump, causing inconvenience in subsequent production operations. Fireproof materials cure quickly and have high strength; if not cleaned in time, they can accumulate in the vacuum pump over time, leading to decreased sealing and reduced suction power. Our company’s separator uses a three-stage separation process with electromagnetic timing control, achieving complete separation and timely external discharge. The separator tank is equipped with an observation window, allowing workers to monitor the internal slurry level during production and adjust the timer accordingly to preemptively address slurry backflow; it also has three cleaning ports for easy cleaning of the tank's interior by workers afterward. The mixing process employs a two-stage mixing system: the #1 mixer first mixes fireproof materials, flame retardants, and additives evenly, then the slurry is pumped to the #2 mixer via the #1 suction pump. Once the production workers are in position, the slurry is pumped from the #2 suction pump to the discharging machine. The #1 mixer features variable frequency speed regulation, enabling adjustments to the mixer’s speed based on actual production needs, ensuring thorough mixing and saving mixing time. The #2 mixer maintains a fixed speed to effectively mix the slurry (slurry recovered from the separator and slurry from the #1 mixer) and prevent sedimentation. The volume of the mixing tank has been accurately calculated to meet the required slurry amount for the main equipment to operate at full load while avoiding excessive slurry remaining in the mixer for extended periods, which could lead to thickening and affect production use, causing severe solidification within the tank and inconveniencing subsequent cleaning operations, especially in high-temperature summer production environments.