Introduction to Hair Dryer

Introduction Introduction to Air Duct: As the name suggests, air duct refers to a pipe that guides the flow of air in a certain direction. It is the most common air guiding device. Depending on their purpose, they are divided into industrial hair dryers and household

Introduction to Hair Dryer

As the name suggests, air duct refers to a pipe that guides the flow of air in a certain direction. This is the most common air guiding device.

Depending on their purpose, they are divided into industrial hair dryers and household hair dryers. Daily hair dryers are the electric hair dryers that people use to dry hair on a daily basis. Of course, they can also be blown by natural wind without heating.

Industrial air ducts are guide air ducts or ventilation ducts. The English name is air duct or ventilation duct. Standards can be divided into conventional air guides, positive pressure air guides, negative pressure air guides, telescopic air guides. , switch air guides, seamless air guides, sewn air guides, rubber air guides and coated air guides, zipper air guides, de tunnel, mining air guides, anti-barrel collapse air guides, flexible, rigid air guides. air guides, etc. If you want to know more about air ducts, you can check out Take a look at Geely Huawei hair dryer, an old brand hair dryer manufacturer

The basic requirements for air ducts Hair dryers are small air leaks, low wind resistance, light weight and easy disassembly and assembly. Commonly used air duct diameters in mines include 300mm, 400mm, 500mm, 600mm, 800mm, 1000mm, 1200mm and other specifications. The air duct manufacturer can also be customized according to actual needs.

Air Guide Classification

Pacific Automotive Network steel rim wheels are not stainless steel. Steel rim wheels are made of aluminum alloy. this material. The steel rim hub is because the steel rim hub manufactureiqued from this material exhibits small longitudinal and lateral vibrations, low imbalance and moment of inertia when the car is rolling. Under the pretext of being light, it has sufficient strength, stiffness and stiffness. dynamic stability, and is consistent with the shaft and tires have good separability.

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(Images/Text/Photos: Pacific Automotive Network Q&A)

Usage: Used for local compression in coal mines, tunnels, metro projects and the underground. Inlet guide type ventilation; Category: Conventional Positive Pressure Air Guide, Zippered Positive Pressure Air Guide; three-way air guidees, special-shaped air guide, automatic switching air guide, reflective air guide.

Variety and Material: According to the covering material, the hair dryer is divided into hair dryer positive pressure hair dryer made of rubber-coated fabric, positive pressure hair dryer made of plastic-coated fabric and positive pressure hair dryer made of rubber-plastic coated fabric. It has antistatic and thermal resistance.

Production Execution Standards: Standard Number: 1. MT164-2007 “Coated Fabric Positive Pressure Air Duct for Coal Mines”. 2. GB/T 9900-2008 “Rubber or plastic coated fabric air guides” specifies the classification, structure, technical requirements, test methods, inspection rules, packaging, marking and transporting rubber or plastic-coated fabric air guides. storage etc

Resistance to wind pressure: after the wind pressure testwind pressure, the air guide tube should not be detached or the covering fabric should not be torn. cracks, seam openings, etc. The diameter expansion rate of the hair dryer should not be more than 3.0%. The air guide duct must have appropriate specifications according to the tunnel requirements and fan air volume, as well as special shape specifications such as elbows and tees. Pay attention to the direction of air flow when connecting.

Ventilation performance: The wind resistance value of a 600mm diameter hair dryer per 100 meters is less than 54N·s/M and the air leakage rate per 100 meters is less than 5%.

Structure and specifications: 1 - End ring 2 - Lifting ring installation line 3 - Lifting ring 4 - Allowable error of inverted project size (mm) Dryer diameter ( mm) 300 400 450 500 600 800 1000 0~ ± 3 Length of sdrier (mm) 5 10 20 0~±100 Note: 1. Dryer size or special shape specifications of reducing ducts, elbows, tees and transition joints can be manufactured according to buyer's requirements .

2. If there are special requirements for the specifications of metal accessories such as lifting rings and hair dryer end rings, the specifications must be agreed by both parties.

3. Add cuffs to both ends of the hair dryer and its length L is 150-200mm.

Air duct ventilation performance test report Air duct diameter, mm Wind resistance per 100 meters (N·S 2 /M 8) Air leakage rate per 100 meters, % 300 ≤1728.0 ≤5.0 400 ≤410.0 ≤5.0 500 ≤134.0 ≤ 5.0 600 ≤54.0 ≤5.0 800 ≤13.0 ≤5.0 Usage: Used for extractable guided ventilation in coal mines, tunnels, subway projects, ships and zunderground ones

Classification: Conventional negative pressure air guide, zipper type negative pressure air guide Pressure guide air duct

Variety and material: according to the covering material, the air duct is divided into rubber-coated fabric, plastic-coated fabric and rubber-plastic-coated fabric. The barrel blank is processed with carbon spiral spring steel wire. Anti-static and heat resistant

Production execution standard: Standard number: MT165-2007 Huai Standard. “Rubber or plastic coated fabric air guides” stipulates the classification, structure, technical requirements, testing methods, inspection rules, packaging, marking, transportation and storage of air guides made of rubber or plastic coated fabric.

Resistance to wind pressure: After passing the suction pressure test, the air guide should not causeflattening, disconnection, tearing of the covering fabric or opening of the seams. The negative pressure air guide should have appropriate specifications according to the requirements of the tunnel and the air volume of the fan, and pay attention to the air flow direction when connecting.

Ventilation performance: the negative pressure resistance of a hair dryer with a diameter of 600 mm (pa) ≥ 3140. The shrinkage rate of the diameter of the hair dryer is greater than 1%.

Structure and specifications:

Negative pressure resistance performance: When the air duct is subjected to negative pressure resistance test, its value should conform to the following table: Air duct diameter (mm) Steel wire spacing (mm) Negative pressure resistance (pa) 600 150 ≥3140 600 100 ≥4900 Dryer diameter shrinkage greater than 1%

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