LBZ-10 Explosion-proof Control Operating Column: The reference price is 100 yuan (≥ 1 set), and the manufacturer is Zhejiang Longmai Explosion-proof Electrical Co., Ltd. Its application scope includes hazardous areas in Zone 1.1 and Zone 2, explosive gas or vapor environments of Group T1 - T6 in Class IIA, IIB, and IIC, as well as indoor and outdoor (IP54, IP65 * to be specified when ordering) in combustible dust places. The technical features of this product are as follows:

The explosion-proof control column is a device used to control and operate electrical equipment in flammable and explosive environments. Its interior is usually equipped with control and display components such as buttons, indicator lights, changeover switches, meters, etc.

Generally speaking, the common working environment temperature range of the explosion-proof control column is usually between -20°C and +40°C. However, the specific working environment temperature range may vary depending on different product models, manufacturing standards, and application scenarios.

Features:
1. The cast aluminum alloy shell is surface-sprayed, with good anti-corrosion ability. The shell has a compact and reasonable structure, with high material density and good strength. Anti-rust oil is applied on the flameproof joint surface, and the fastening pipe fittings are made of stainless steel bolts.

Petrochemical industry: In the process of petroleum refining and chemical production, there are often flammable and explosive gases and dust. The explosion-proof positive pressure box can be used to control the electrical equipment in these dangerous areas, such as the start-up control of motors, the power supply and control of instruments and meters, etc.

Mechanical pressure relief valve: This is a more common type. It works based on the mechanical structure principle of the spring and the valve disc. When the pressure inside the box reaches the preset opening pressure, the spring is compressed and the valve disc opens for exhaust. The mechanical pressure relief valve has a relatively simple structure and high reliability.

Intake control:
1. Electric regulating valve: By the signal sent from the intelligent control system, the opening of the valve is adjusted to control the flow and pressure of the protective gas entering the explosion-proof positive pressure box.
2. Pressure reducing valve: It is used to reduce the input high-pressure protective gas to the pressure range suitable for the operation of the explosion-proof positive pressure box, ensuring the stability and compliance of the intake pressure.

The explosion-proof positive pressure box forms a certain positive pressure environment inside the box by filling it with clean and dry protective gas (such as compressed air). When the pressure inside the box reaches the set value (usually within the range of 50 - 1000Pa), the positive pressure inside the box can prevent dangerous explosive gases, dust, etc. from the outside from entering the box.

Explosion-proof positive pressure box is an electrical equipment with explosion-proof function. Through the intelligent control system and pressure control system, it introduces clean and safe compressed air into the box to form a micro-positive pressure inside the box, preventing the entry of dangerous gases and dust from the outside, so as to achieve the purpose of explosion-proof.