Introduction
The FBD series of mine explosion-proof press-in type counter-rotating axial flow local ventilator product is manufactured completely in accordance with MT755-1997 Technical Conditions for the Counter-rotating Local ventilator. The product is ventilation equipment with the most ideal performance for coal mines at home and abroad.
Overview
a The product characteristics
FBD series of coal mine explosion-proof press-in type counter-rotating axial flow local ventilator has the characteristics of reasonable structure, complete specifications, high efficiency, obvious effect of energy saving, low noise, and long distance of air supply. According to the requirements of different ventilation resistance, it can be used as a whole machine and can be used in stages, so as to reduce ventilation power consumption and save energy. If the length of the roadway is less than 2000m, the air can be supplied normally without moving the fan, which reduces the labor intensity of the workers and saves ventilation time. It is the ideal equipment for local ventilation in underground coal mines. At the same time, it can also be used in high-pressure ventilation applications such as metallurgy, nonferrous, gold, chemical industry, shipbuilding, and ceramic industries. Its structural characteristics are explosion-proof type, counter-rotating, muffling, and axial flow type.
b, Main purposes and scope of application
This product is mainly used as a press-in type local ventilator in underground coal mines. It is applicable to the local ventilation applications of mining working faces and various kinds of chambers. At the same time, it is also applicable to the local ventilation applications in other mines and various kinds of tunnel ventilation.
c, Varieties and specifications
This product is a serialized product with complete specifications and varieties. For detailed information, please refer to the technical performance and external installation dimension table (hereinafter referred to as Table 1) of the FBD series of coal mine explosion-proof press-in type counter-rotating axial flow local ventilator.
d, The composition of the model and its representative meaning
e, The environmental conditions for use
This product can be placed flat on the floor of the roadway and also can be suspended on the wall of the roadway for use. When used on the floor, the air inlet (the collector end) of the fan should not be immersed in water or cement. The gas temperature of the user environment of the fan is -20~50ºC, and the altitude should not exceed 1000m. The rated frequency of the power supply used is 50 Hz, and the rated voltage is any class of 380V/660V or 660V/1140V.
f, The working conditions
The dust content of the gas passing through this product does not exceed 200mg/m3. It should be installed in the air inlet with a gas concentration of less than 1% in the underground coal mine. When the gas concentration exceeds 1%, the power supply should be cut off immediately.
g. The impact on the environment and energy
This product has no pollution to the environment and is a high-efficiency energy-saving product.
h, Safety
This product is reasonably designed and has the conformity certificate of explosion proof and the "MA" safety mark permit. Its matching motor also has these two certificates, which belong to the explosion-proof safety product.
The structural characteristics and working principle
a The overall structure and its working principle, working characteristics
This product has two impellers installed close to each other, which are respectively driven by two explosion-proof motors to rotate them in opposite directions. The airflow enters the I-class impeller from the collector end along the axial direction, and after being accelerated, the direction of the airflow is deflected and then flows into the-class main engine. After being accelerated again by the -class impeller, the direction of the airflow is reversely deflected and then discharged from the diffuser end along the axial direction.
Product Parameters
The performance and external dimension table of the FBD series of counter-rotating axial flow local ventilator Table 1
| Serial no. |
Machine no. |
Air volume (m3/min) |
Full pressure (Pa) |
Power (KW) |
| 1 |
3.5/4.4 |
133-90 |
715-1320 |
2.2×2 |
| 2 |
4/3 |
111-56 |
172-1800 |
1.5×2 |
| 3 |
4/4.4 |
136-72 |
251-1880 |
2.2×2 |
| 4 |
4/6 |
150-86 |
351-1956 |
3×2 |
| 5 |
5/8 |
210-120 |
331-2503 |
4×2 |
| 6 |
5/11 |
228-132 |
371-2950 |
5.5×2 |
| 7 |
5/15 |
245-150 |
380-3524 |
7.5×2 |
| 8 |
5.6/15 |
274-164 |
375-3750 |
7.5×2 |
| 9 |
5.6/22 |
340-210 |
405-4418 |
11×2 |
| 10 |
5.6/30 |
395-250 |
450-4470 |
15×2 |
| 11 |
6.3/30 |
420-260 |
413-4950 |
15×2 |
| 12 |
6.3/37 |
486-292 |
513-5130 |
18.5×2 |
| 13 |
6.3/44 |
525-310 |
600-5263 |
22×2 |
| 14 |
6.3/60 |
590-390 |
760-5800 |
30×2 |
| 15 |
7.1/60 |
620-396 |
603-6450 |
30×2 |
| 16 |
7.1/74 |
672-480 |
800-6500 |
37×2 |
| 17 |
7.1/90 |
738-400 |
1100-6700 |
45×2 |
| 18 |
8.2/74 |
630-270 |
420-6900 |
37×2 |
| 19 |
8.2/90 |
654-380 |
600-7600 |
45×2 |
| 20 |
8.2/110 |
790-550 |
680-8200 |
55×2 |
| 21 |
8.2/150 |
964-546 |
700-8600 |
75×2 |
| 22 |
10/60 |
1170-814 |
745-2733 |
30×2 |
b, Main parts, work, and working principle
As shown in the figure, this product consists of four main parts: the collector, the I-class main engine, the -class main engine, and the diffuser. The collector is composed of a curved collecting inlet and a guide cover. Its main function is to reduce the local resistance loss of the airflow, in order to create a good air inflow condition for the I-class main engine. And the I-class main engine is made of major parts such as the I-class casing, the I-class impeller, the I-class motor, and so on. The I-class casing is the main body of the bearing, and the main function is to ensure the normal operation of the impeller and the motor and at the same time, the function of the muffler. The I-class impeller is the core part of the I-class main engine to produce the airflow, and the I-class motor is the power part to make the I-class impeller rotate. The working principle is that the airflow entering from the collector end flows along the axial direction into the I-class impeller, and after being accelerated, the direction is deflected and then flows into the-class main engine. And the -class main engine is made of the major parts such as the -class casing, the -class impeller, the -class motor, and so on. The main function of the -class casing and the motor is the same as that of the I-class ones. The -class impeller is the core part of the -class main engine to produce the airflow. The working principle is that the airflow from the I-class impeller is deflected into the -class impeller, and after being accelerated, the direction is reversely deflected and then flows into the diffuser along the axial direction. And the diffuser is composed of the diffusion cylinder and the guide cover. The main function is to reduce the local resistance loss of the outlet of the airflow and improve the effective power capability of the fan. The airflow is discharged from the fan along the axial direction through it, and at the same time, acts as a rear muffler.
The technical characteristics
The main performance
This series of fans has main performances such as explosion-proof safety, noise reduction, smooth operation, smooth characteristic curve, a wide area of high efficiency, and so on.
b, The main parameters
The main technical performance parameters of this series of fans are air volume Q, full pressure P, full pressure efficiency η, noise (compared with A sound level) LSA, rotating speed n, and so on. The maximum efficiency of the series of fans is 86%, and the highest noise does not exceed 85 dB(A). See Table 1 for details of other parameters.
The installation and commissioning
a Equipment foundation, installation conditions, and installation technical requirements
This series of fans does not need the special equipment foundation and can be placed on the flat roadway floor for long-term stable operation. When the suspension type installation is used, the anchor bolt should be laid according to the position of the lifting eye on the top of the fan, and it should be connected with the U-shaped hanging steel.
b, The commissioning procedures, methods, and matters needing attention
Remove the collector and diffuser of the fan, open the explosion-proof junction box of the motor at both ends, select the appropriate flame-retardant cable according to the motor power, thread through the threading box of the I-class and -class-main engine casing, connect it to the motor through the explosion-proof junction box, fasten the junction box and tighten the compression nut of the threading box to clamp the cable, and then connect to the collector and the diffuser. It should be noted that the junction box of the motor is an explosion-proof surface. As long as it is opened one time, before reconnecting, the industrial Vaseline or 107 anti-rust oil must be used to brush the joint surface again to ensure the explosion-proof performance of the motor.
Check whether the connecting bolts of each part are complete and reliable. When the two-class impeller is moved by hand, and the turning gears are all flexible, the test run can be conducted and the commissioning work can be carried out.
c. Acceptance test items, methods, and criteria after the installation and commissioning
After the installation and commissioning of the fan, the following requirements should be met:
c1. The radial clearance between the impeller and the casing should be uniform, and ensure that the diameter of the impeller should be between 0.15% and 0.35%;
c2. After the assembly of the I-class and-class fan, the distance between the end faces of the I-class and-class hub shall not be less than 9 mm;
c3. The maximum output power of each motor shall not be greater than 95% of its rated power;
c4. The rotation direction of the impeller must conform to the direction indicated by the rotation direction mark on the casing.
c5. This series of fans must be managed and operated by special personnel;
c6. The installation and use place of this series of fans must conform to the relevant provisions of the Safety Regulations for Coal Mines.
d, Preparation before the test run and the test run
d1. Select the appropriate cable and special switch;
d2. Thread and connect the switch according to the requirements of section b of this article;
d3. Carefully check whether the connecting bolts of the impeller gland, the motor fixed cylinder, and other parts are complete, firm, and reliable;
d4. Move the two-class impeller by hand, and the turning gears should be all flexible, without friction and jamming;
d5. Start any one of the class fans first, and then start another class of fans after its operation is stable. Stop the fan after 20 minutes of operation, and carefully check again, whether the connecting bolts of the impeller gland, the motor fixed cylinder, and other parts are firm and reliable. It can only be operated for a long time or wait for use if everything is accurate.
. Use, operation, and maintenance
a. Before the use of the ventilator, check again, whether the fixing and the connecting bolts of each part are loose, and whether they are complete, firm, and reliable;
b. Move the two-class impeller by hand, and the turning gears should be flexible without friction, impact, noise, and other abnormal sounds;
c. Start the inching of the test run and check whether the rotation direction of the impeller is correct;
d. Always check whether the sound is normal and whether the connection is loose or not during operation;
e. This series of fans shall be generally inspected once every 6 months, and all parts of the machine shall be inspected;
f. When not in use, this series of fans should be placed in a place where the air is circulated and dry to prevent it from getting damp, corrosion, and other losses.
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 maintained long-term technical cooperation relationships with many colleges and universities, such as Xi'an Jiaotong University, Tianjin Nankai University, etc. 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
Our Advantages
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 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.
https://hengdingfan.en.made-in-china.com/contact-info.html
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