About dust collection air duct, positive and negative pressure air duct

Introduction Regarding dust collection air duct, positive and negative pressure air duct MT164-2007 φ300, φ400, φ500, φ600, φ800, φ1000 1. Purpose: used for coal

About dust collection air duct, positive and negative pressure air duct

MT164-2007 φ300, φ400, φ500, φ600, φ800, φ1000

1. Usage: Used for positive pressure ventilation with local fans in coal mines, tunnels and underground mines

2, Structure and specifications of dryer

1-Ring d 'end 2-Lifting ring installation line 3-Lifting ring 4-Reverse direction

Allowable error in project size (mm)

Dryer diameter (mm) 300 400 450 500 600 800 1000 0~±6

Dryer length (mm) 5 10 20 0~±100

Note: 1. Air ducts , elbows, tees and wind reducing transition joints with different cylinder sizes or special shapes can be manufactured according to buyer's requirements.

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

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

3. Ventilation performance of air ducts

The wind resistance value of an air duct with a diameter of 600 mm per 100 meters is less than 54N s2/M8 and the leakage rate is less than 54N s2/M8. air per 100 meters. is less than 5%.

4. Negative pressure resistance performance of the air duct

When the air duct is subjected to a negative pressure resistance test, its value shall conform to the following table:

Air duct diameter (mm ) Steel wire spacing (mm) Negative pressure resistance (pa)

600 150 ≥3140

600 100 ≥ 4900

5. The shrinkage rate of the diameter of the hair dryer is greater than 1%

VI Marking, packaging, storage and transportation

1. Spray the “Safety Sign” pattern issued. by the Safety Office at a distance of 300 to 400 mm from the extr ringemitted from the air duct.

2. The hair dryer is packed in woven bags, bags, etc.

3. The hair dryer should be kept clean during storage. It is prohibited to come into contact with oil, acids and alkalis or other materials that may damage the quality of the rubber. It should be kept away from direct sunlight. and 1 m from heat sources. The indoor temperature should be maintained at -15+35℃, with relative humidity maintained between 50% and 80%.

4. When transporting the hair dryer, be careful to avoid damage caused by mechanical shock and friction, and keep it away from sunlight and rain.

5. The physical and mechanical properties and safety performance of this product must comply with the standards specified in MT164-87 within a storage period of not more than one year from the release date From the factory.

The local fan in the mines ofcoal should achieve the following points: 1. Use double circuit power supply and have automatic switching function; 2. Implement lock-in protection for wind power and gas power; 3. Install wind protection; Power and gas lockout protection. The cylinder air pressure sensor locking device 4. The air supply volume of the local fan should meet the minimum air volume requirements required for the excavation working face or head tunnel single;The installation position of the local fan should be set on the air inlet side more than 10 meters from the return air outlet; 6. The local fan should be placed with a work record plate for equipment maintenance, inspection and maintenance; The local fan must be placed on a special table, it is prohibited to place itr directly on the floor on the rack; 8. The air duct of the local fan should be tight and waterproof, and there should be a dedicated person to check and handle it every shift. 9. Use special cables, special switches and special transformers.

Local fans of underground coal mines should at least reach the above points to ensure that personnel working in excavation or single-head tunnels can carry out production work safely and to ensure that toxic and harmful gases in the tunnels will not cause problems. harm the human body, to prevent major accidents from occurring.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. How to reduce it to 4.8V/4.4A?

    Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. I personally think it is impossible to reduce it to 4.8V/4.4A. Because the discharge platform of lithium batteries is generally set
    08-10
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01