China Coal Roots Blower - China

1 medium DSSR series fans are mainly used to transport air and inert non-toxic gas, intake air temperature is generally not more than 40 ℃, the gas content of the solid particles is not greater than 100mg / m3, the maximum particle size not greater than the smallest internal blower working gap by half.

2, the whole life of the fan design life of not less than 10 years before the first overhaul of the safe operation of not less than 15000h.

The actual flow and design flow deviation see the following table:

Designed flow(m3/h) Actual flow deviation(%) 0.5～1.5 ±6 1.5～15 ±5 1.2 structure diagram 2, the main components:

2.1 Enclosure Enclosure is one of the main components of the fan chamber volume, high-strength gray cast iron materials, made on CNC machining special machine.

2.2 wallboard panels located on both sides of the casing disposal, one end of the joint action with the cabinet volume cavity is formed at one end as a bearing, support from the rotor.

Wall panels made of high strength gray cast iron, from finishing on CNC equipment.

2.3 by the impeller and a rotor shaft through a combination of thermal loading.

Impeller made of high strength gray cast iron materials, processed on precision CNC planer, wheel balancing accuracy of up to G2.5 grade.

Axis adopt alloy steel after quenching with high strength 40Cr.

2.4 bearings Japan Seiko NSK products.

It plays a major bearing radial load, radial and axial positioning effect.

2.5 gear made of 20CrMnTi, accuracy GB10095 prescribed five precision, taper gear and hardened by carburizing, hardness up to HRC56 ~ 62.

2.6 shaft extension seal the fan shaft extension wall portion, usually the labyrinth seal type throttle for conveying air seal.

If the delivery of special media, need to be explained when ordering, the sealing portion corresponding transformation can be used.

IV, install and use

1, a blower system

1.1 Blower system main components

1.1.1 gas blower fan as the power source system, in the process of disposal of the cloth, occupies the central position, cloth Ge other equipment requirements and must take into account the impact of the blower.

The fan can not afford any additional load line outside itself, can not have a high fan near a heat source other objects affect the safe operation of the fan, the fan around the need to leave the necessary maintenance and repair space.

1.1.2 Flexible connector is installed between fan and duct coupling elastic joint that is convenient, it can also prevent the vibration of the blower to the incoming piping system, but also to avoid resonance between the fan and piping system.

1.1.3 muffler is usually installed in the fan intake and exhaust ports bit Ge, intake and exhaust ports to reduce air flow noise.

If the muffler installed away from the fan intake and exhaust noise will not be effectively addressed.

1.1.4 valve is usually installed in the fan pipeline will have a safety valve (vacuum valve), check valves, vent valve (intake valve unloading) and other valves.

Safety valve (vacuum valve) role is to protect the fan will not overload operation, the valve must be installed vertically it.

Vent valve (unloading inlet valve) is mainly used in the fan opening stop unloading.

One-way valve can be avoided gas recirculation blower shall be mounted in a horizontal line, should be noted that the one-way direction of the arrow on the valve flow direction is consistent with the installation, and to ensure the check valve should be left behind at least 1.5DN length straight pipe, so as not to affect the smooth open check valve.

Vent valve (intake valve unloading) nominal diameter than the fan diameter is reduced one to two specifications.

1.1.5 pipe generally determined by the caliber of the blower pipe diameter, to minimize the number of right-angle elbow bends nor appropriate to type.

1.1.6 To reduce fan vibration damper to spread, the damper can be installed between the fan base and foundation, large fan base can be added between the vibration damper and the stand.

Further damper also can block the noise propagation through the foundation.

1.1.7 acoustic cover to control the spread of the fan operating noise of the fan can be equipped with acoustic enclosures.

Acoustic enclosures absorption capacity, sound insulation, ventilation and other functions, the general amount of noise insulation cover is 15 ~ 5dB (A).

But after installing the fan acoustic enclosure, also to a certain extent to the maintenance, repair inconvenience.

1.1.8 smooth start of the motor starting current cabinet for attenuating the impact on power and improve the fan when starting.

Starter optional self-coupling step-down start, soft start depending on the circumstances

Move, frequency conversion and other methods.

Company Contact:

• Posted By: Shandong China Coal Group

• Phone: 865372350961

• Address: No.11 Kaiyuan Road, Jining , China

• Email:

• Website: https://www.chinacoalintl.com

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