Overview of ZK2436 (5-19mm) horizontal roller type tempered glass unit

AT-TAQ2436 (5-19mm) series forced convection tempering electric furnace is the new generation of tempered glass produced by China Furnace. Compared with domestic and foreign products, the equipment has the advantages of reasonable technology, strong system control software function, reliability, excellent thermal insulation performance, low energy consumption, computer dynamic control, and production efficiency, especially suitable for the deep processing of Low-E glass, coated glass and other glass products.

Features:

The specially designed convection cooler has more stable and reliable temperature performance and excellent convection effect.

The most advanced convection circulation structure is designed to ensure faster and more uniform heating of glass.

The design and layout of heating elements are unique and reasonable. With the most advanced remote temperature control module, the temperature control is extremely accurate and the adjustment is simple, effectively ensuring the uniformity of temperature in the furnace.

The running speed of the convection fan is controlled by the frequency converter, and given by the computer, so that the upper and lower tables of the glass are heated, which greatly improves the product quality.

High quality thermal insulation materials are selected inside the furnace to effectively control the production of various particles and the resulting impact on glass quality.

High quality thermal insulation materials are selected inside the furnace to effectively control the production of various particles and the resulting impact on glass quality.

The circulation formed by the convection fan is completely fed into the furnace, which will not cause heat loss due to convection, and the energy-saving effect is good.

It can be used to add various float glass, embossed glass, Low-E glass, etc. The E minimum value of Low-E glass is up to 0.05.

The added glass has good optical quality and is free of heating defects such as pits, roller marks and roller tracks. Better strength and particle size of glass.

Equipment introduction:

Equipment structure and operation principle:

The equipment includes upper and lower sets, heating section, flat steel cooling section, lower sets, cooling system and control system. The flat steel glass raw material enters the heating furnace from the upper one, and after heating in the heating furnace, it enters the cooling section of the flat steel grid for tempering and cooling, and the final product arrives at the next one for unloading.

Furnace section

This section includes combined steel structure frame, transmission system, photoelectric switch, universal ball lifting platform, etc.The drive motor of the upper furnace is driven by the frequency converter to drive the placed glass to the photoelectric switch of the front furnace of the heating furnace and prepare for entering the furnace. During furnace feeding, the frequency converter drives the motor to drive the roller table to run at high speed to transport the glass to the heating furnace for heating. The degree of the glass is accurately measured and recorded by the photoelectric switch and furnace encoder, and the movement distance of the glass can be changed by the machine boundary according to the degree of the glass.The universal ball table mechanism with the actuating device is more suitable for the installation of glass.

The heating furnace is of upper and lower split steel structure. The upper furnace body can be lifted and lowered by 500mm through the furnace top lifting mechanism, which is convenient for maintenance and cleaning. The thermal insulation material of the furnace body is made of high-density ceramic fiber board, the surface is brushed with heat-resistant adhesive, and a layer of magnetized aluminum plate is laid on the inside of the furnace to ensure that no impurities will fall off, causing product pits and defects. Each convection fan adopts frequency conversion control, which can be controlled separately. According to the heating principle of glass, adjust the pressure of glass automatically. The convection fan is arranged in the middle of the furnace top, and adopts the design of "double outlet" to make the blowing pressure more uniform, and the motor bearing adopts "cold cooling" to prolong the bearing life.

Double belt drive, better synchronization and safety performance.

This system can make the heating mode of the glass surface in the heating section change from the original radiation-based heating mode to the combined heating mode of radiation and convection, in which convection is the main one. This type of lifting increases the heat absorption rate of the upper and lower surfaces of the glass, and makes the heating of the upper and lower surfaces of the glass reach a balance quickly. The heating speed is faster, and the glass is heated more evenly. It solves the problems that are difficult to solve in the traditional tempering furnace, such as the overheating of the glass edge and the middle surface, and improves the surface quality and flatness of the tempered glass. Especially suitable for tempered Low-E glass and coated glass with different heat absorption rates.

Internal stainless steel convection system

The forced convection system added in the furnace is composed of convection fan, inlet pipe and outlet pipe.

The upper ceramic pair flows out of the furnace tube, preventing deformation and slag falling at high temperature in the furnace. And it is absolutely insulated.

7)Furnace wire 1. According to the different arrangement of furnace body, there are different types of furnace wire, which has the characteristics of simple structure, convenient installation and long service life. The installation type is adopted and the hanging type is installed. The installation is convenient and convenient for maintenance. The installation of each furnace wire is independent, and the removal and replacement of faulty furnace wire will never damage other furnace wires. The furnace wire has a single point control function. Each furnace wire has a separate thermocouple for temperature measurement. The temperature and power can be set separately to make the temperature in the furnace as uniform as possible. 2. The furnace wire of our company adopts nickel on the top and iron chrome aluminum on the bottom. The nickel wire has strong oxidation resistance and durability. It increases the number of furnace wire heating spots, and improves the quality of the plate glass. For example, the 2442 furnace type adopts 48 heating spots on the top and the bottom. (Upper nickel chromium, lower iron chromium aluminum.)Lower furnace wire brace: the original stainless steel brace is changed to the body heat-resistant ceramic tile brace, which fundamentally solves the problem of deformation of the lower furnace wire brace and plays a role in durability.

8)The lower radiation plate adopts corrugated shape to increase the radiation plate strength, and does not deform at high temperature.

9)The roller table hole is made of customized grooved insulating bricks with precise diameter, clearance, resistance to heat, heat preservation and easy replacement, which further reduces the tightness of the ceramic roller table and the rapid dissipation of temperature, resulting in excessive energy consumption. The inner insulation layer of the furnace body is paved with nano-tin foil, which improves the overall insulation performance of the furnace body.

10)The roller hole and the ceramic roller table are sealed with grooves, which reduces the sealing gap between the sealing block and the ceramic roller table, so that the temperature in the furnace will not emit heat through the gap between the roller table.

The furnace body is driven by high-quality ceramic rollers, with surface finish and service life. The ceramic roller is driven by circular belt, and the frequency conversion speed control ensures the synchronization and stability of the movement. Equipped with roller conveyor frame, the installation of roller table is convenient and fast.

The drive shaft of the furnace body adopts the soldering shaft with smooth surface quality and accurate straightness. A V-shaped groove is opened between 45 ° C and 45 ° C to fix the pulley. The pulley is easy to install and firmly fixed. The shaft head adopts four bolts from the outside and the coupling adopts four bolts from the inside. The connection is more firm. The transmission between the shaft and the shaft is framed to prevent the glass from colliding in the furnace.

Cooling section

The lifting mechanism of the upper and lower grids can adjust the levelness of the upper and lower grids separately, and adjust the flatness of the glass to make it more convenient. The upper and lower grids are formed by bending the cold plate, and the outlet holes are drawn on the single box and sealed Glue application, the roller table adopts high-quality cold-drawn steel rolls with thick wall, and each steel roll is grooved at the rope winding part to make the glue container Li. The temperature-resistant rope is tightly bonded with the steel roll through the temperature-resistant adhesive, and is subjected to the baking heat treatment. Chain drive, better synchronization.

2）The small bellows is of the cleanable type, and the two ends of each bellows are equipped with separate screws, which can be removed separately. It is convenient to clean the internal dirt. 

The company's full grid passes the series, and the gap between grid rollers is reduced from 120mm to 100mm, which improves the flatness of sheet glass.

The fan is of integral frame type. Shock-resistant and shock-absorbing pads. Site installation saves time, energy and land.

Line configuration: all electrical parts and wiring in the cabinet comply with CE standards. The power cable required by the equipment (including the cable connecting the frequency converter and the inverter) shall be provided by Party A.

PLC is the product of the American company.

The program has reliable stability and friendly machine interface. It has many abnormal alarm functions (including loose encoder connector, parameter setting error) and alarm logs for maintenance personnel to refer to and check.

It makes the Hanlong temperature control PLC adopt the module regulation, strengthen the anti-interference energy and polarity, improve the temperature control accuracy, and make the performance more stable and reliable; The modular heating system can set the heating curve according to the version of different glass, and each heating element can set the temperature and adjust the power separately.The module is a computer. The temperature signal collected by the temperature acquisition module is connected to the control module. Then the module controls the on-off of the furnace wire according to the control requirements (the control requirements include the temperature setting value and the power setting value), and the control accuracy is within 3 degrees. The upper computer is the industrial control computer.

Control system

Structure and control system features:

The whole machine is controlled by industrial control machine and PLC, and the main drive is controlled by the control system. Frequency conversion and stepless speed regulation, with high accuracy and good stability. The degree of automation is high, and the operation is simple.

A layer of magnetized aluminum plate shall be laid on the top of the heating chamber to ensure that no impurities will fall off, resulting in product pitting and defects.

The heating type mining spiral matrix structure controls the furnace temperature in different areas; The heating element has fine zoning, reasonable design and unique structure, so as to prolong its service life. Temperature measurement adopts distributed remote thermocouple temperature measurement module I-7018, with strong anti-interference and temperature measurement accuracy; The furnace wire is controlled by solid state relay, with stable and reliable performance and low noise.

 The fully enclosed heating furnace body is made of high-quality thermal insulation materials with good thermal insulation performance. The temperature rise time from 25 ℃ to 700 ℃ is 3-4 hours, and the average temperature drop per 24 ℃ is less than 15 ℃. The energy consumption is low.

The heating furnace is divided into upper and lower parts, and the upper part can be lifted and lowered for easy maintenance. The drive roller table of the heating section adopts high-quality ceramic rollers, with good surface finish and long service life.

 Fully functional software configuration and reasonable hardware configuration provide great convenience for production, maintenance and adjustment.

The fan is of integral frame type.

The temperature control algorithm adopts the module regulation, the anti-interference energy is strengthened, the temperature control accuracy is improved, and the performance is more stable and reliable.

Three-phase equilibrium during dynamic heating and elimination of phase imbalance during dynamic heating.

Thermocouple operation status shall be monitored dynamically. During the production process, the operation status of thermocouple shall be monitored dynamically. In case of abnormal operation of thermocouple, the alarm shall be triggered and the problem of that thermocouple shall be prompted.

The fine-tuning control of furnace temperature can be realized by adjusting the fine-tuning temperature of each heating electric furnace wire at the upper and lower parts of the furnace. Temperature and power can be set separately for each furnace wire. It facilitates the operation of various types of glass.

Perfect operation prompt function, which can prompt the operation and fault conditions under various conditions in the form of dialog box.

The misoperation prevention function imposes strict restrictions on the value range of data that affects the normal operation of the system.

Automatically store alarm records.

AT-TAQ2442 Technical parameter AT-TAQ2442

Specification of glass:

Installed power