Chuangfeng Ventilation Equipment Factory is a manufacturer specializing in the production of centrif

Chengdu Yuhesheng Ventilation Equipment specializes in the research and development, design, sales, production, installation and after-sales of electric lighting and smoke exhaust skylights (slotted smoke exhaust skylights, triangular smoke exhaust skylights, round arch smoke exhaust skylights, fixed lighting skylights), streamlined ventilation skylights, thin ventilation skylights, finished gas buildings, ventilators and other products.

1. Free** 2. Drawing deepening 3. Technical support

4. Technical support 5. Contracted labor and materials 6. Nationwide supply

[Chengdu Yuhesheng ventilation equipment **** five advantages].

Advantage 1: source manufacturers, own factories.

As the source manufacturer, the factory covers an area of 12,000 square meters, with advanced production and processing equipment, including: laser welding machine, hydraulic shearing machine, bending machine, punch, etc., many years of strict operation, excellent technology, quality is more guaranteed.

Advantage 2: Complete qualifications, qualified quality inspection.

The company has a construction enterprise qualification certificate, a safety production license, an ISO9001 quality certification system certificate, and has won and successively won a number of honorary certificates, including: quality management system certification, integrity business enterprise certificate, integrity management demonstration unit certificate, enterprise credit AAA level and other certificates. The thin natural ventilation smoke exhaust skylight and streamlined opening and closing roof ventilator manufactured by the company have passed the Shenzhen quality control monitoring and inspection and have obtained national certification and international mutual recognition.

Advantage 3: A number of patented technologies, stronger waterproof structure.

At present, the company has won a number of patent certificates, including a waterproof profile and its formation of smoke exhaust skylight, a roof smoke exhaust skylight sash, etc., the skylight adopts structural waterproof professional technology to eliminate the hidden danger of water leakage, and the skylight ventilation and smoke exhaust are more assured.

Advantage 4: Structural calculation, ventilation and smoke exhaust are guaranteed.

The company's ventilation and smoke exhaust equipment has been accurately calculated for structural ventilation, which meets the design requirements of building ventilation and smoke exhaust, so as to meet the acceptance specifications and ensure that the ventilation and smoke exhaust volume is more guaranteed.

Advantage 5: One-to-one project special docking

The company sets up a WeChat group for each cooperation project to manage separately, forming a one-stop service system for production, sales, installation and after-sales, and timely feedback on the project progress in the WeChat group, so that all parties to the project can understand the project situation in a timely manner, and it is also convenient for the company to carry out operations and provide services according to the feedback in a timely manner!

If there is temperature, it is better to use a centrifugal fan, otherwise it is best to use an axial fan, which is easy to install and takes up less space.

The sound of the axial fan is relatively loud.

Exhaust fan for exhaust air!

The advantages of double air inlet centrifugal fan are large air volume and wide range of wind pressure, which are generally A type and E type transmission, simple structure and stable operation. However, it is generally made into a box-type for exhaust, and the motor can be built-in or external.

It is generally used for combined air conditioning units, fan boxes, fresh air units, waste heat ** devices, etc., and has a wide range of uses, and there are many machine numbers.

Different air volume, full pressure parameters, to choose different fans!

It is designed with such a design that the smoke exhaust air is shared with a pipeline, and the smoke is discharged at high speed when a fire occurs at low speed, and the 70-degree fire damper above the air duct is closed and the mechanical smoke exhaust port is opened.

The air volume is related to the number of revolutions. The faster the air volume, the greater the volume, generally it will be installed on the fan with a two-speed motor, which saves money and space than using 2 fans, and the general smoke exhaust is not used, and no one will often catch fire. #

This is generally the usual exhaust and fire smoke exhaust fan shared, and the usual exhaust air volume is small, smoke exhaust air volume is large, so the two-speed fan is selected, it becomes the smoke exhaust at high speed, the exhaust at low speed, if the usual exhaust air volume is larger than the smoke exhaust air, it is used in reverse, but this situation is rare, do not want to use two-speed can also use two fans.

It is known that the air volume required for each station is 1200m3 h, and there are 50 stations in total.

1. Calculate the total air volume:

q=1200×50

60000m3/h。

According to the characteristics of the workshop, two fans are used to work, and the air volume of the first fan is set as QO; The air volume of the second fan is Q1, so the air volume of each fan should be:

qo=q/2

30000m3/h。

qo=q12, according to the general requirements of industrial ventilation, set the wind speed to 18m s, calculate the pipe diameter of each station:

d=√[qo*4/(ν*

150mm。

1-2 Pipe Diameter:

d1=√[q*4/(ν*

768mm。

Calculate the diameter of other segments according to this method:

2-3 sections 720mm; 3-4 segments: 680mm; 4-5 segments: 651mm; 5-6 segments: 614mm; 6-7 segments: 570mm; 7-8 segments: 530mm; 8-9 segments 485mm; 9-10 segments 434mm; 10-11 segments 406mm; 11-12 segments: 307mm; 12-13 segments: 217mm; 13-14 segments 150mm

4. Calculate the friction resistance along the way

Due to the time relationship, we estimate that the average diameter of the pipeline is 7-8 sections of 530mm.

=(=From the above calculation, a 3kw axial fan can be selected.

m s refers to the usual flow rate of the boiler induced air duct, which can generally be selected from 14m s to 18m s when calculating. If industrial ventilation is to be used for dust removal, the choice of wind speed depends on the specific gravity of the dust. For example, dust removal in the woodworking industry requires a wind speed of 26m s-30m s.

Less than that, the dust will not be sucked away.

2. It is not experience, it is based on the manufacturing cost and the minimum wind speed required by dust in the pipeline.

3. It is a type of work. ' refers to the kinematic viscosity coefficient of air at 20; ' is a constant in the turbulent transition zone formula; It's also a constant in this formula.

4. It is full pressure.

KW is a little smaller, 4KW axial fan flow rate 30000m3 h is no problem, such as T35-11-10 high-efficiency axial flow fan. If you want to remove dust, you have to use a centrifugal fan, you try to calculate, if the wind speed is 30m s, then the straight pipe will be much smaller, the r value will be very large, and the motor power is about proportional to the cube of the r value. Axial fans can only be used for ventilation in the workshop.

6. The friction resistance coefficient can be used without a table, and it is the same through calculation.

9-26 high-pressure centrifugal fan, if equipped with rectangular air duct size of 400x300mm, it is fine.

If it is a round duct, the diameter of the duct needs to be 400mm;

M350 dynamic separator with 800mm diameter air duct.

This article mainly tells you about the use of centrifugal fan air knives and the places that need to be paid attention to in use. Centrifugal fan air knife: From the working mode, we can divide them into two categories: standard air knife and super air knife.

The centrifugal fan blows out the gas after the standard air knife air curtain is deflected 90 degrees. The super air knife is blown out directly on the horizontal line in the air curtain. Through the centrifugal fan and air knife, it can play a very good role in ventilation and ventilation in many industrial fields.

Specifically describe the use in various industries: 1. Printing industry: centrifugal fan air knife plays a role in the printing industry to quickly air dry ink and blow off chips.

2. Automotive industry: Air knives can be used here for air-drying cooling of dust and debris before painting. 3. Electronics industry:

The first process between assembly of the circuit board is the use of a centrifugal fan for quick drying. 4. Metal industry: metal polishing, spraying, and gold plating need to cool and air dry its surface before it is polished, sprayed, and gold-plated.

and other industries. I won't go into detail here. In today's society, centrifugal fans are used in more and more places, and choosing a reliable fan factory is important for later service.

Since 2006, we have officially applied for the patent of R&D, design and processing of fans, and have been recognized by the state. Together we blower factory is your right choice. You are welcome to visit our strength in the negotiation business.

If the instantaneous starting current is higher than the current value set by the overload protector, it will trip.

Halo motor is fine.

It's okay at low speed, then it depends on whether the high-speed line is connected to the wrong line, or if their thermal relay setting value is the same, you turn it up and try it.

In addition, whether the contactor trips or the circuit breaker trips.

Starting 2 will not work. Question supplement: 55kw shaft fan (2 sets) 1When any one is activated, it is the internal contact of the main switch, which causes the contact to overheat, so as to protect it. It is recommended to measure the two motors separately first.