YBT series Explosion-proof axial flow local fan for mine
Please read the operating instructions carefully before installation and use
1 Scope of application and purpose
YBT series mine explosion-proof axial flow local ventilator (hereinafter referred to as ventilator) is applicable to underground coal mines containing explosive gas mixture (methane). It can be used for local ventilation in lines with AC 50Hz and voltage of 380V or 660V, and also for ventilation of tunnels and large buildings.
The ventilator shall be able to operate reliably under the following conditions:
A. The altitude shall not exceed 1000m;
B. Ambient air temperature is - 20 ºC -+50 ºC;
C. The relative humidity of ambient air is not more than 95% (at 25 ºC);
D. Underground coal mine with explosive (methane) gas mixture in the air;
E. In a place without significant shaking and shock vibration;
F. In an environment without corrosive metals and gases or vapors that damage
The insulation.
2 Model meaning YBT NO
Number of impellers
Rated power of fan kW
The machine number is expressed by the impeller decimeter
ventilator
Flameproof type
Y series motor
3 Technical parameters
3.1 Product executive standards
GB3836-2010 Explosive atmospheres
MT 222-2007 Technical Conditions for Local Ventilators for Coal Mines
3.1 Explosion-proof type: mine explosion-proof type
Explosion-proof sign: ExdI;
3.2 See Table 1 for technical parameters
4 Structure Overview
4.1 The structural form of this series of fans is mine flameproof axial flow type. The fan comprises six parts: a suction fan, impeller, motor, explosion-proof junction box, body, and deflector. The body and structure are welded with steel plates: the motor and impeller are directly connected, and the transmission is reliable; The whole machine has a simple and compact structure, strong and durable, safe to use, and convenient for maintenance.
4.2 The motor is a YBF series mining flameproof two-pole three-phase asynchronous motor with a voltage grade of 380/660V. The base of the motor is welded with the body, and the air flow conveyed by the motor impeller is directly cooled.
4.3 The ventilator flange is welded with grounding bolts for direct grounding on site.
4.4 On the flange of the outlet duct, evenly distributed holes are drilled for connecting the reducing nipple or direct gum duct. When connecting the fan and the plastic air duct with the reducing nipple, the type of the reducing nipple can be made into the
Convergent type or diffusion type.
4.5 The junction box of the motor is placed outside the machine body to facilitate wiring. There are only six wiring terminals and one grounding terminal on the junction box of the ventilator. The wiring mode is shown in Figure 1 and Figure 2. The user selects the wiring mode according to the power supply voltage requirements.
Fig. 1 380V wiring mode Fig. 2 660V wiring modes
4.6 See Figure 3 for the outline of the ventilator.
5 Installation and precautions
5.1 Inspection before installation:
5.1.1 Whether the assembly is correct;
5.1.2 Whether the solid parts are firm and whether the spring washers are complete.
5.2 The insulation resistance of winding to ground shall not be less than 2 megohms when measured with a 500V megohmmeter.
5.3 Check in detail whether the data on the fan nameplate is consistent with the actual needs. Pay special attention to whether the power supply voltage is constant.
5.4 Check whether all conductive points are in good condition without rust.
5.5 Select cables according to relevant regulations. For example, a U-type flameproof sheathed cable must be used for wiring in coal mines. Attention shall be paid when wiring. Suppose the outer diameter of the selected cable does not match the inner diameter of the rubber sealing ring produced by the manufacturer in the lead-in device. In that case, the user shall select another one according to the cable size.
5.6 Install protective grounding according to regulations: underground coal mines must be carried out according to the detailed rules for installation, inspection, and measurement of protective grounding devices.
5.7 Check whether the control equipment and protection device can meet the requirements.
5.8 The ventilator shall be tested before formal operation. Before the power supply is not connected, the fan impeller shall be rotated to check whether there is jamming, and then the power supply shall be connected to check whether the rotation direction is correct and whether there is abnormal sound, vibration, rubbing, and other phenomena. Only when everything is normal can it be used.
5.9 When the fan is used in the coal mine, the selection, use, and maintenance of the fan and its supporting switches, cables, protective devices, and other facilities must comply with the relevant provisions of the Coal Mine Safety Regulations.
6 Maintenance and repair
6.1 During use, check the condition frequently. No foreign matter shall be placed or hung at the air inlet. The protective grille of the fan air inlet shall not be used when it is damaged. When used underground in coal mines, when the explosion-proof property is damaged, it shall be treated or replaced immediately and shall not be used again.
6.2 If abnormal noise occurs during the operation of the ventilating it shall be stopped immediately for inspection and removal.
6.3 The bearing temperature shall not exceed 95 ºC, and the sound shall be normal. The bearing shall be inspected if it is overheated or the sound is abnormal. If it is found that the bearing is damaged, it shall be replaced immediately. Under normal circumstances, the lubricating oil should be replaced every three months, and the amount of oil should be 2/3 of the net volume of the bearing chamber. Excessive or insufficient oil will cause overheating of the bearing.
6.4 In order to ensure the normal operation of the ventilator, regular maintenance is required. Generally, minor maintenance should be carried out every six months, and major maintenance should be carried out once a year.
6.5 The terminal block and rubber sealing ring are vulnerable parts, and users should pay attention to them when disassembling.
6.6 When assembling and disassembling the ventilator, pay attention to protecting the flameproof surface. During assembly, the flameproof surface shall be coated with 204-1 replacement antirust oil. All flameproof surfaces shall be free of damage and rust, otherwise, the explosion-proof performance will be lost and safe operation cannot be guaranteed. If there is damage or corrosion, repair or replace it.
6.7 When not in use, the ventilator shall be placed in a ventilated and dry place to prevent moisture, corrosion, and other damage.
6.8 Possible faults and maintenance methods of the fan are shown in Table 2.
Product Parameters
Table 1 Main Technical Parameters
Machine number
|
voltage V |
current A |
Air volume
M/min |
pressure
Pa |
power
Kw |
impeller diameter
mm
|
| 380/660 |
| 3.15 |
380 |
4.6 |
55-101 |
960-220 |
2.2 |
315 |
| 4.0 |
380/660 |
10.7/6.18 |
105-160 |
1300-350 |
5.5 |
400 |
| 5.0 |
21.2/12.2 |
190-290 |
1800-500 |
11 |
500 |
| 6.3 |
56.5/32.6 |
250-425 |
3500-800 |
30 |
630 |
Technical parameters of YBT series mine local axial fan:
| |
YBT-2.2 |
YBT-4 |
YBT-5.5 |
YBT-11 |
YBT-18.5 |
YBT-22 |
YBT-30 |
through
wind
machine |
Voltage
|
380 |
380/660 |
380/660 |
380/660 |
380/660 |
380/600 |
380/660 |
Total wind pressure Pa
|
1050-380 |
1390-880 |
1700-800 |
2250-880 |
3180-910 |
3315-950 |
3690-1100 |
Air volume m3/min
|
55-101 |
85-164 |
90-180 |
130-240 |
195-330 |
240-380 |
250-455 |
Total pressure efficiency%
|
80 |
80 |
81.5 |
80 |
80 |
80 |
80 |
Noise dB (A)
|
87 |
90 |
89 |
91 |
95 |
95 |
95 |
Impeller diameter mm
|
315 |
400 |
400 |
500 |
560 |
560 |
630 |
Detailed Photos
Certifications
Packaging & Shipping
1) The equipment is equipped with a number of signs such as a product nameplate, rotation direction sign, wind direction sign, grounding sign, lifting sign, safety warnings, and so on.
2) Product nameplate mainly includes the contents of the equipment: main technical parameters (flow, pressure, motor power, Revolutions Per Minute), product number, manufacturing date, and so on, which is convenient for users to check at any time
3) Small equipment adopts the type of export wood packaging and large equipment, and the steel frame transports large cargo transportation.
4) All equipment is waterproof and rainproof.
Company Profile
Zibo Hengding Fan Co., Ltd. Is located in Industrial Park, Beijiao Town, Zhoucun District, Zibo City, Shandong Province, China. The company covers an area of 12,000 square meters and a construction area of 8,000 square meters. The company has total assets of 27 million RMB and 186 employees, 46 engineers, and technicians. It has passed ISO9001 quality management system certification and has maintained long-term technical cooperation relationships with many colleges and universities, such as Xi'an Jiaotong University, Tianjin Nankai University, and so on. Now, it has developed into a modern ventilation equipment manufacturing enterprise with first-class testing and producing equipment, high-quality and excellent production molds, strong scientific research and development strength, a strict quality management system, and gradually perfected development. The company has 15 years of production experience, with an annual output of 5,000 sets of ventilators
Strict quality standards, precision machining, and other spare parts and design maintain product stability, strictly select product parts suppliers, and perfect after-sales service system to allow customers to enjoy a new experience
Our company has introduced the latest research results of the Chinese Academy of Sciences, C4-II ternary flow wing twisted blades, which have high aerodynamic efficiency.
The surface of the ventilator impeller blade is sprayed with advanced super-resistant (CN) metal material to form a wear-resistant, anti-corrosion protection layer on the surface of the blade. The wear resistance of the blade surface is 10 to 50 times higher than that of the ordinary carbon steel material, thereby greatly prolonging the service life of the blade.
Quality assurance measures:
In long-term production management, our company has formed a set of standardized process control measures and control points, which can provide users with high-quality products in all directions. Our company has a good reputation and is an enterprise that users can absolutely trust.
Our company has obtained the IS09001 certification from the International Organization for Standardization (see Enterprise Qualification Materials for details). We strictly standardize the operation process and control points of product manufacturing
After Sales Service
When the equipment of the buyer is installed, our company is responsible for on-site installation guidance, personnel training and commissioning of test-drive, The separately purchased fan accessories can be used for telephone connection guidance and debugging
Our company guarantees that the structural safety, aerodynamic performance, running noise, and appearance, quality of the supplied ventilators can be checked and accepted by relevant departments.
The quality assurance period for the supplied ventilator equipment, except for special provisions, is 18 months from the final acceptance of the ventilator.
Q. What information should I provide when inquiring?
A: Fan name/model, KW, Air pressure, Flow rate Air Volume, and temperature
Q. What is your warranty?
A. Our warranty is 18 months after receiving the fans. During the warranty period, replace the damaged parts free of charge. Out warranty period, to provide timely, high-quality technical services and price concessions spare parts to ensure.
continuous safe and high-quality equipment operation.
Q. How does your factory control product quality?
A. We have a quality inspection department. All fans are running more than 3 hours before delivery to test the quality. If there is a quality problem, we will produce a new one.
Q. What are your terms of payment?
A. TT 40% AS THE ADVANCE PAYMENT AND TT 60% AFTER INSPECTION BEFORE SHIPPING.
B. 100% IRREVOCABLE L/C AT STGHT.
Q. What products do you produce?
A. Centrifugal fan, tunnel fan, axial fan, jet fan, mining fan, exhaust fan,anti-corrosion blower, high-pressure blower, explosion proof fan, fan accessories, etc, welcome to contact us to learn more details.
Q. Where is your factory? Can I visit your factory?
A. Zibo Hengding Fan Co., Ltd. Is located in Industrial Park, Beijiao Town, Zhoucun District, Zibo City, Shandong Province, China.
Q. How long will it take to ship after the order?
A. 10-15 Days If you need it urgently, we can discuss it for shorting time.
Q. Is the product customizable?
A. Various types can be customizable.
Contact Us
Company: Zibo Hengding Fan Co., Ltd.
Address: Industrial Park, Beijiao Town, Zhoucun District, Zibo City, Shandong Province, China.
Website: http://hengdingfan.en.made-in-china.com
Tel: +86 15653306160
Fax: +86-533-6069989
Cellphone: +86 15653306160
https://hengdingfan.en.made-in-china.com/contact-info.html
){kind=link}
){kind=link}