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When choose industrial fans, the user maybe confused, and do not know which kind is better. While a good industrial fan is not only meeting performance requirements,but also involving safety and noise.

Five safety standards for large industrial fans as follow:

1. Check whether the motor head and the whole machine will shake when rotating in low and medium speed gears, especially in high speed gears.

2.After a long period of high speed rotation (at least 1 hour later),perceive the heat generating from the front shell of the industrial fan by hand or other instruments. If it feels very hot, it indicates that the industrial fan motor has poor heat dissipation performance.

3, look at the speed, power, air volume, noise and other parameters (industrial fan speed, power, air volume and noise is proportional, that is to say, the higher of fan speed, the power and air volume are greater,  the noise will also become larger,part ventilation cooling effect is better).

4, see whether there is intermittent pause in high speed rotation around the head, whether the head is not in place.

5. Gaxiao industrial fan is designed with brand-new mortise and tenon structure connection mode, which has the function of real anti-collision.

Then, we need to observe the industrial fan noise. What are the sources of noise?

1.Vibration. If the rotor of the fan rotates, the rotor's physical center of mass and the center of inertia of the rotating shaft are not on the same axis, it will lead to the imbalance of the rotor.The close distance between the physical center of mass of the rotor and the center of inertia of the rotor is called eccentricity, and the imbalance of the rotor will result in eccentricity. When the rotor rotates, a force acting on the support of the rotor will be generated due to the action of centrifugal force, resulting in vibration, and vibration will be transmitted from the base path to all parts of the machinery.

2.Wind noise. At the rotating of large industrial fans, the blades are periodically subject to the pulsating action, resulting in noise;On the other hand, the blade itself and the pressure on the blade are not evenly distributed, so it is easy to disturb the surrounding gas and parts during the rotation, which also constitutes the rotation noise.In addition, vortex noise is generated by the pulsation of pressure distribution on the blade , which is due to gas flowing through the blade generating the turbulent attachment layer, vortex and vortex separation.The noise of these 3 reasons can be called  "cut wind noise", the fan with general wind & big wind pressure, its cut wind noise is bigger also.

3. Abnormal sound, wind noise sounds like just the wind, but the abnormal sound is different, during the rotating of industrial fan, if except to the wind, there are still other sounds, you can judge the industrial fan has abnormal sound.Abnormal sound may occur due to foreign matter or deformation in the bearing, collision for improper assembly, or uneven winding of the motor resulting in looseness.The service life of fan is working time of radiator product working normally without breakdown , high grade industrial fan use life can achieve tens of thousands hours commonly.

The size of noise when the fan works, affected by many factors, the unit is decibel (dB).When measuring the large fan’s noise, it shall be carried out in the muffler room with noise less than 17dB, one meter away from the fan, and aligned with the fan's air inlet along the direction of the fan shaft, and measured in A weighted way.

4. The spectral characteristics of industrial fan noise are also very important. Therefore, it is necessary to record the noise frequency distribution with a spectrograph. Generally, the noise of the fan should be as small as possible and there should be no abnormal sound.Fan noise is related to friction and air flow.Fan rotate speed is higher, wind quantity is bigger, the noise that causes also can be bigger, the element of fan’s vibration also cannot ignore additionally.Of course, a high-quality fan will have very little vibration of its own, but the first two are difficult to overcome.To solve this problem, try using a larger fan.In the case of the same air volume, the working noise of the large fan at a lower speed should be less than that of the small fan at a higher speed.

Gaxiao is a one of the professional industrial ceiling fan manufacturers in China with our own R&D team, we are always ready to help you increase air circulation and reduce energy cost.  

Company Profile

Jiangsu Gaxiao, one of the professional commercial fan manufacturers is located in Suzhou, Jiangsu province, China. Since its inception, Gaxiao has always been committed to the development and research of industrial high volume fans. . Adhere to the corporate purpose: down to earth, technology-oriented, focus on quality, brand name service!

Overview

Low Noise Tape, also called No Noise Tape or silent tape, is an ideal tape for busy or confined packaging areas where constant noise can be an irritation, especially for office, school and home. The sound level of Hyseal's Low Noise Tape is less than 30dbs. The low noise tape can improve your tape experience and make you far away from noisy pollution.

Silent unwinding, quiet roll out

No delamination of foil & adhesive

High quality stability in four seasons

Organic solvent free & eco-friendly

High sealing ability of packaging both in storage and transport

Description

Pulling a Noisy Tape is surprisingly noisy in a wroking area which is required peace. Bopp low noise tape is with silent unwinding and decreases the noise below 30dbs. It provides a comfortable working area, a quiet world for people. Hyseal combines years of experience as a leading manufacturer of superior quality Low Noise Tape. All of our Low Noise Tapes are produced by modern production facilities with typical glue formulation. Premium BOPP film with extra tensile strength provides higher shear strength and superior quick sticky performance during the application process. Available widths of Low Noise Tape are from 12mm to 96mm. It can be supplied for industrial application, also stationery application.

Features

Silent unwinding, quiet roll out

No delamination of foil & adhesive

High quality stability in four seasons

Organic solvent free & eco-friendly

High sealing ability of packaging both in storage and transport

Hyseal is devoted to supplying various logo printed tape. We sincerely invite and welcome people from all around the world to invest and create more values together.

With the deepening of isolation research and the development of isolation technology, nonlinear isolators suitable for various occasions have emerged. Laminated springs for the automotive industry are widely used in China. The principle is to use the dry friction between the steel plates to reduce the vibration and impact caused by the unevenness of the road. There are metal conical coil springs for the civil industry, as well as air springs.

During the entire deformation process of the wire rope shock mounts, sliding friction will occur between each wire rope, which consumes a large amount of energy and has a high equivalent damping ratio. Moreover, the wire rope anti vibration mounts exhibit nonlinear softening characteristics in a large deformation range, the stiffness decreases as the deformation increases, and the vibration isolation rate increases. Therefore, the good broadband isolation performance of the wire rope isolator for vibration damping is especially suitable for the application of vibration and shock environment isolation.

The wire rope shock isolator have only been developed in the last 30 years. Compared with the above-mentioned isolators, it has four distinct advantages:

①Nonlinear soft characteristics;

②Multi-directional isolation, high damping ratio;

③Corrosion, high and low temperature resistance;

④Compact structure and light weight.

At present, the common wire rope anti vibration mounts have several types of spiral, arch and ring. But in either case, they are made of stainless steel wire rope wound or bent. Their common advantage is the three-way protection of the equipment, reliable operation in high temperature and harsh environments, wide load range, unlimited storage period and service life. In terms of impact resistance, it can achieve maximum impact attenuation in a minimum space, and its vertical allowable deformation can reach 40~60% of the height of the vibration isolator. In foreign countries, they are used in the transportation of some equipment to replace the impact-resistant packaging of raw plastics and rubber. Rocket and missile transport vehicles also use it. In terms of ships, it passed the tests of light impact machines, heavy impact machines and floating impact platforms to meet the requirements of MIL-S-901 and MIL-STD-167. The wire rope isolator has excellent durability and fatigue. A vibration isolator with a diameter of 2.4 mm has been tested for up to 150 hours and seven million tests at 13 Hz and ±1.5 mm amplitude. The result is safe and sound.

For a 1.5mm wire rope isolator for vibration damping with a 1.5mm diameter, a sweep vibration test up to 10KHZ was performed, and the vibration isolation effect was 95%. This proves that the wire rope isolator for vibration damping can isolate small amplitude and structural noise. Wire rope anti vibration mounts are widely used in vibration and shock isolation of instruments, instruments, control boxes, etc., and some of the original rubber vibration isolators have been replaced by wire rope shock mounts.

Xi'an Hoan Microwave Co. Ltd., headquartered in China, Xi’an city, was founded in 2005, is a premier supplier of Industry Energy Absorption and Vibration Isolation Products. Contact us today to see how our wire rope isolators damping can benefit your special equipment application demands or in any way that we can help you meet your production requirements.

Features
Bluetooth version: 5.0
Color：Black
Headphone capacity: 60mA
Charging box capacity: 600mA
Playing time: 5H
Standby time: 48H

Bluetooth version: 5.0
Color：Black
Headphone capacity: 60mA
Charging box capacity: 600mA
Playing time: 5H
Standby time: 48H
Operating Voltage: 3.2V-4.2V
Bluetooth frequency: 2.4-2.48GHz
Noise reduction: CVC8.0
Charging current: 250mA
Supporting agreement: A2DP/HFP/HSP/AVRCP

Selling Points:
1. Unique ergonomic design and lightweight design soft silicone. Upgrade charging tech, wireless charge.
2. Automatic turn on/off-automatic pairing, portable charging box provides long time battery capability. Support Siri function. Its mini size is easy to carry, and it is installed with CVC8.0 noise reduction.
4. Dynamic technology offering quality stereo bass sound. And it is comfortable even for long-time wearing.
5. With the built-in microphone, your voice will be heard clearly when you make phone calls and enjoy music without noise or breaks in the Bluetooth connection.
6. With Bluetooth version: 5.0, it is compatible with all Bluetooth-enabled devices. It can built-in mic, you can answer phone call through hang on and tail repeats function, release your hand. This wireless noise cancelling earbuds is a good helper to answer the phone while driving. You don't have to hold the phone to answer the call and it makes driving easier and safer!
7. Built-in 60mAh Lithium Polymer battery, when fully charged, it can provide you with 5 hours for music. The package includes a USB cable, makes charge easier. Special and delicate design with a lightweight, carrying case and ear hooks bring you much convenience.
8. Using high-sensitivity speakers and independent cavity design, makes the treble bright, the bass thick. Side sound holes, enhance stereo sound and avoid the second mix. In-ear design and noise reduction technology to avoid noise interference and give you 360-degree clear surround sound effects.
9. This Bluetooth earbuds can be automatically powered on and paired after taking them from the charging case. Meanwhile, they can also be automatically powered off and charged after putting back into the charging case.

When choose industrial fans, the user maybe confused, and do not know which kind is better. While a good industrial fan is not only meeting performance requirements,but also involving safety and noise.

Five safety standards for large industrial fans as follow:
1. Check whether the motor head and the whole machine will shake when rotating in low and medium speed gears, especially in high speed gears.
2.After a long period of high speed rotation (at least 1 hour later),perceive the heat generating from the front shell of the industrial fan by hand or other instruments. If it feels very hot, it indicates that the industrial fan motor has poor heat dissipation performance.
3, look at the speed, power, air volume, noise and other parameters (industrial fan speed, power, air volume and noise is proportional, that is to say, the higher of fan speed, the power and air volume are greater,  the noise will also become larger,part ventilation cooling effect is better).
4, see whether there is intermittent pause in high speed rotation around the head, whether the head is not in place.
5.Gaxiao industrial fan is designed with brand-new mortise and tenon structure connection mode, which has the function of real anti-collision.

#hvls fan #high volume low speed fan #industrial ceiling fan #ceiling industrial fan

Then, we need to observe the noise of industrial fans. What are the sources of noise?

1.Vibration. If the rotor of the fan rotates, the rotor's physical center of mass and the center of inertia of the rotating shaft are not on the same axis, it will lead to the imbalance of the rotor.The close distance between the physical center of mass of the rotor and the center of inertia of the rotor is called eccentricity, and the imbalance of the rotor will result in eccentricity. When the rotor rotates, a force acting on the support of the rotor will be generated due to the action of centrifugal force, resulting in vibration, and vibration will be transmitted from the base path to all parts of the machinery.
2.Wind noise. At the rotating of large industrial fans, the blades are periodically subject to the pulsating action, resulting in noise;On the other hand, the blade itself and the pressure on the blade are not evenly distributed, so it is easy to disturb the surrounding gas and parts during the rotation, which also constitutes the rotation noise.In addition, vortex noise is generated by the pulsation of pressure distribution on the blade , which is due to gas flowing through the blade generating the turbulent attachment layer, vortex and vortex separation.The noise of these 3 reasons can be called  "cut wind noise", the fan with general wind & big wind pressure, its cut wind noise is bigger also.
3. Abnormal sound, wind noise sounds like just the wind, but the abnormal sound is different, during the rotating of industrial fan, if except to the wind, there are still other sounds, you can judge the industrial fan has abnormal sound.Abnormal sound may occur due to foreign matter or deformation in the bearing, collision for improper assembly, or uneven winding of the motor resulting in looseness.The service life of fan is working time of radiator product working normally without breakdown , high grade industrial fan use life can achieve tens of thousands hours commonly.
The size of noise when the fan works, affected by many factors, the unit is decibel (dB).When measuring the large fan’s noise, it shall be carried out in the muffler room with noise less than 17dB, one meter away from the fan, and aligned with the fan's air inlet along the direction of the fan shaft, and measured in A weighted way.
4.The spectral characteristics of industrial fan noise are also very important. Therefore, it is necessary to record the noise frequency distribution with a spectrograph. Generally, the noise of the fan should be as small as possible and there should be no abnormal sound.Fan noise is related to friction and air flow.Fan rotate speed is higher, wind quantity is bigger, the noise that causes also can be bigger, the element of fan’s vibration also cannot ignore additionally.Of course, a high-quality fan will have very little vibration of its own, but the first two are difficult to overcome.To solve this problem, try using a larger fan.In the case of the same air volume, the working noise of the large fan at a lower speed should be less than that of the small fan at a higher speed.

Gaxiao is a one of the professional industrial ceiling fan manufacturers in China with our own R&D team, we are always ready to help you increase air circulation and reduce energy cost.