Plate sand drying and dust removal equipment

Plate sand drying and dust removal equipment

Structural composition:

Drying system:

• Heat source device:

Provides the heat required for drying. Common heat sources include natural gas, coal, biomass particles, electric heating, etc. Its function is to generate high-temperature hot air flow to provide energy for the evaporation of water in the plate sand.

• Drying chamber (cylinder):

 It is the main space for drying plate sand. It is usually a cylindrical or square structure made of metal material. It has good sealing and heat resistance and can withstand high temperature and pressure during the drying process. A lifting plate or stirring device is generally set in the drying chamber to make the plate sand constantly turn over during the drying process to increase the contact area with the hot air flow and improve the drying efficiency.

Dust removal system:

• Filter device:

such as the filter bag in the bag filter, the electrode in the electrostatic precipitator, etc., used to filter and capture the dust generated during the drying process. The filter bag is usually made of high-temperature and corrosion-resistant fiber material, which can effectively block dust particles; the electrode adsorbs the dust on the electrode through the principle of electrostatic adsorption.

• Dust removal device:

including mechanical vibration device, pulse jet device, etc., which are used to regularly clean the dust accumulated on the filter device and maintain the filtering performance of the filter device. When the dust on the filter device accumulates to a certain extent, the dust removal device will start to remove the dust from the filter device and drop it into the ash hopper.

• Induced draft device:

composed of a fan and a ventilation duct, it is responsible for sucking the dust-containing gas generated during the drying process into the dust removal system, and discharging the purified gas from the equipment, maintaining the air flow circulation inside the drying and dust removal equipment, and ensuring that the dust can be effectively collected and processed.

• Conveying system:

used to transport the plate sand to be dried into the drying room and transport it out of the equipment after drying. Common conveying systems include belt conveyors, screw conveyors, bucket elevators, etc., and the appropriate conveying method is selected according to the characteristics of the plate sand and production requirements.

• Control system:

using automatic control technology to monitor and control parameters such as drying temperature, drying time, wind speed of the induced draft fan, and dust removal cycle in real time to ensure the stable operation of the equipment and the drying and dust removal effect. The control system is generally composed of sensors, controllers, actuators, etc. The operator can operate and monitor the equipment through the control panel or computer software.

• Working principle:

First, the wet sheet sand is transported to the drying room through the conveying system. The hot air flow generated by the heat source device enters the drying room and fully contacts the sheet sand, so that the moisture in the sheet sand is evaporated by heat. The evaporated water vapor and the hot air flow carrying dust enter the dust removal system under the action of the induced draft device. In the dust removal system, when the dust-containing gas passes through the filter device, the dust is intercepted, and the purified gas is discharged from the equipment. Start the dust cleaning device regularly to remove the dust accumulated on the filter device to ensure the normal operation of the dust removal system.

Advantages and characteristics of sheet sand drying and dust removal equipment:

Efficient drying:

• Fast drying:

The powerful heat source supply and reasonable drying chamber structure design can enable the sheet sand to reach the required degree of dryness in a shorter time and improve production efficiency. For example, some efficient sheet sand drying and dust removal equipment can dry sheet sand with high moisture content to a moisture content that meets production requirements within a few hours.

• Uniform drying:

The lifting plate or stirring device in the drying room can make the plate sand constantly turn and mix during the drying process, ensuring that all parts of the plate sand can be evenly heated, avoiding the situation of incomplete or over-drying of local parts, thereby ensuring the drying quality of the plate sand.

Good dust removal effect:

• High dust removal efficiency:

The advanced dust removal system can effectively capture and filter the dust generated during the drying process, and the dust removal efficiency can reach more than 99%, greatly reducing the pollution of dust to the environment and the harm to the health of operators. For example, the filter bag of the bag filter can filter out micron-level dust particles, and the electrostatic precipitator can efficiently remove dust by electrostatic adsorption.

• Stable dust removal performance:

A reliable dust cleaning device can promptly remove the dust accumulated on the filter device, maintain the air permeability and filtering performance of the filter device, and ensure that the dust removal system always maintains a good dust removal effect during long-term operation.

Energy saving:

• Heat recovery:

Some plate sand drying and dust removal equipment is equipped with a heat recovery device, which can recycle the heat in the high-temperature exhaust gas discharged during the drying process to preheat the cold air entering the drying room or other links that need heating, thereby improving energy utilization efficiency and reducing energy consumption.

• Optimized structural design:

The structural design of the equipment is reasonable, which can reduce heat loss and airflow resistance, and reduce energy loss during the operation of the equipment. For example, high-quality insulation materials are used to insulate the drying room to reduce the transfer of heat to the outside world.

High degree of automation:

• Intelligent control:

The control system can realize automatic control of the equipment. The operator only needs to set the drying temperature, drying time, dust removal parameters, etc., and the equipment can run automatically, which greatly reduces the labor intensity and improves the stability and reliability of production.

• Fault self-diagnosis:

Some advanced plate sand drying and dust removal equipment also has a fault self-diagnosis function, which can monitor the operating status of the equipment in real time, send out an alarm signal in time when a fault occurs, and display the fault information, which is convenient for the operator to repair and maintain.

Strong adaptability:

• Applicable to a variety of plate sands:

whether it is granular plate sand or powdered plate sand, whether it is plate sand with high water content or plate sand with special requirements for drying temperature, the equipment can be adjusted and optimized according to different material characteristics and production needs, and has strong adaptability.

• Can be used in conjunction with other equipment:

Plate sand drying and dust removal equipment can be used in conjunction with other equipment on the plate production line, such as sanding machines, crushers, screening machines, etc., to form a complete plate production process flow, improve production efficiency and product quality.