Fire air breathing apparatus high pressure compressor

There are side covers and oil sight windows for disassembly and inspection on both sides of the crankcase. The front section is equipped with a bearing seat and a front bearing cover at the power coupling end.

1. The main engine part of the high-pressure compressor of the fire-fighting air breathing apparatus
1. Crankcase components:
There are side covers and oil sight windows for disassembly and inspection on both sides of the crankcase. The front section is equipped with a bearing seat and a front bearing cover at the power coupling end. The fan bracket on the upper part of the rear bearing cover supports the fan parts: the upper part is cast with two cylinders The support plane has a total of four cylinders and is fitted with a respirator. An oil pan is installed at the bottom of the crankcase, and the oil pan contains special compressor oil.
2. Crankshafts, connecting rods and components
A connecting rod is installed on the crankshaft of the crankshaft, rolling bearings at both ends of the crankshaft, and a flywheel at the big end of the crankshaft is connected with an elastic coupling: a pulley is installed at the small end near the bearing to drive the cooling fan to rotate. The crankshaft is lubricated by splashing the oil rod of the connecting rod to the crankshaft and piston pins and other components.
3. Piston parts:
It is divided into first-grade, second-grade, third-grade, fourth-grade and fifth-grade piston parts. The first-grade piston is cast iron, the second and third grades are cast aluminum alloy, and the fourth and fifth grades are steel parts. The first and second stage pistons are equipped with piston rings, the upper part is a flat ring, the middle part is a twisted ring, and the lower part is an oil ring. The second and third grades are equipped with 7 flat rings, and the fourth and fifth grades are equipped with 9 flat rings.
4. Cylinder components:
It is divided into first-level, second-level, third-level, fourth-level, and fifth-level cylinder parts. The first-level, second-level, third-level, fourth-level, and fifth-level cylinders are all cast with cooling warps on the surface of the cylinder head to increase the heat dissipation area. The head is equipped with intake and exhaust valve components, intake and exhaust pressure cylinders, and intake and exhaust pressure caps.
5. Intake and exhaust valve components:
It is divided into a first-level intake valve, a first-level exhaust valve and a second-level intake valve, and the second-level, third-level, fourth-level, and fifth-level are combined intake and exhaust valves.
6. Cooler and fan parts:
It is divided into two parts: one, two, three and four coolers and cooling fans. It is connected between the intake and exhaust ports of the first, second, third and fourth stages of the compressor. Installed on the base by the feet, the upper part of the cooler is equipped with a safety valve, the lower part is equipped with a drain valve, a guide cover and a protective cover are installed towards the end of the crankcase, a wind-type cooling fan is installed in the middle, and there are fan brackets to install the fan components On the crankcase, the crankshaft pulley at the end of the crankcase drives the fan to rotate through the V-belt.
2. High-pressure compressor control system of fire-fighting air breathing apparatus
1. The instrument panel is equipped with one, two, three, four and five pressure gauges and compressor oil temperature gauges.
2. The compressor will automatically alarm and stop due to high discharge pressure. With pressure regulating gauge, the pressure range can be set.
3. Lubrication system: The air compressor adopts splash lubrication, the oil splashes everywhere in the box and forms oil mist, and the bearings, pistons, piston rings and other moving parts are well lubricated.
4. The electrical control cabinet is star-delta step-down start.

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Fire air breathing apparatus high pressure compressor

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