As far as filters are concerned, everyone is not unfamiliar, because some small filters are often used at home, such as water purifiers and air filters. With the advancement of technology, some more advanced ones are constantly appearing. Filters, such as automatic roller blind primary filters, etc., for this filter, compared with other filters, the function is similar, and the working principle is also the same. Today’s article will tell you this kind of filtering. What are the special features of the device?

First, the filter material used in the initial effect filter of the roller shutter is mostly man-made fiber. This fiber is more edible and reinforced by the outer frame, which has relatively high requirements for the outer frame. The outer frame is required to be very strong, and the other is The material of the outer frame is required to be moisture-proof hard paper, because the use of this material can ensure that the initial effect filter of the roller blind can continue to work in a harsh environment and that it will not be deformed. In addition, the outer frame must be reinforced. The general method is diagonal reinforcement, and the outer frame is connected very tightly at the frame to prevent air leakage.

Second, the main function of the roller shutter primary filter is to initially filter the particles in the air. The diameter of the main filter dust is generally above five microns, which is some particles that can be detected with the naked eye. It can also be used with some advanced filtering devices for filtering protection, because in some advanced filtering devices, if the air with high dust content is directly filtered, it may cause certain harm to such filters, so they are in use Previously, advanced filters generally used rolling-type primary filters for safety protection.

This is the characteristic of the roller blind primary effect filter , because its characteristics make it have a good market, regardless of the high air quality requirements, it is necessary to adopt such a roller blind primary effect filter, so for the factory It is a necessary equipment.

For air filters, it is already a necessary facility for every family. Because people’s living standards are gradually improving, they pay more and more attention to the quality of life. With the development of technology, filters have changed from traditional machines to Reel filter . This is that although the machine has been on the market for some time, people do not know what its working principle is. After reading this article, you will know what filtering processes are available.

The first step, when the scroll filter is working, the first use is the multiple filters equipped inside. Through this facility, particles and germs in the air can be filtered out. These multiple filters have a strong adsorption function. So it is easy to absorb the particles in the air cleanly.

The second step is to use titanium oxide for disinfection. This is to use chemical methods for disinfection, so that the content of toxic substances such as formaldehyde in the air can be reduced. These titanium dioxide particles are all nanometers, so they have great adsorption Area, it can effectively activate the anti-virus effect.

The third step, the filter device is to use negative ions, the role of this negative ions is to increase the oxygen content in the air, positive yang can ensure that the air is clean, but also increase the oxygen content in the room, and can keep this content stable. Content.

The last step is to use ultraviolet rays for sterilization. Because ultraviolet rays have a strong anti-virus function, the use of ultraviolet rays can eliminate the titanium dioxide, viruses and bacteria that have not been killed, so that the viruses in the air can be eliminated. Reduced, the health of people indoors can also be protected.

This is the working steps of the reel filter, which is divided into four steps. Through these four steps, the air can be filtered clean, and not only the dust is filtered, but the most important thing is that it can kill bacteria and viruses in the air. It is the most important, directly cutting off the pathogen of the infectious disease.

Are you planning to buy an automatic rolling filter ? Are you worried about how to buy a filter that suits you? Nowadays, many people will ask about the price and technical methods of automatic rolling filter . In order to save everyone’s precious time, let me do a pre-order preparatory work for you here!

1. Determine the required air volume and design wind speed

This is the basis for choosing an automatic rolling filter model. As the primary task of quotation, we should calculate the appropriate filter size through calculation formula based on the design requirements of air volume and wind speed. Through the filter size, we can easily calculate the approximate price of the filter.

2. Determine the input power on site

Although the size of the on-site input power supply is not a factor affecting the price, it is an important reference standard for ordering motor equipment. If you have no requirements for the three-phase or single-phase of the motor, then the manufacturer will generally supply it in accordance with the standard three-phase. However, if there are corresponding site conditions and there is no supply of three-phase power, a certain amount of material and financial resources will be wasted, and on-site wiring will be specially carried out.

3. Determine whether there are corrosive gases and substances on site

The condition of the on-site filter media directly affects the choice of material for the automatic roller blind filter . Under normal environmental conditions, we will use cold-rolled steel plate paint. If the environment contains corrosive gas, we generally choose the whole machine stainless steel SUS304. But if it is used in special environments, such as the seaside, due to the heavy salt spray, we will use SUS316.

4. Determine whether there are flammable and explosive gases and substances on site

If there are flammable and explosive gases at the site, the whole machine must be explosion-proof, and a special explosion-proof motor, explosion-proof electric control box must be provided, and the wiring must be explosion-proof. The hazard coefficient must be minimized. So as not to cause irreparable losses.

The selection of automatic roller shutter filters should be based on safety as the primary basis, combined with the surrounding environment for selection, so that you can find a filter that suits you and create greater benefits.

Filters have gradually come into people’s sight, and the production of various filters is constantly adapting to the development of the times. One of the explosion-proof automatic rolling shutter filters has come out quietly, and every new thing must have it. The reasons for this new filter are under what background and what kind of charm does this filter have? Let us reveal one by one below.

Explosion refers to a matter that undergoes physical or chemical changes from one state to another state and releases huge amounts of energy. This kind of energy has huge destructive power, and its production requires three conditions, namely, explosive substances, oxygen, and ignition sources (electric spark, mechanical spark, high temperature, etc.), all of which are indispensable. In special industries with high dust content such as petroleum and chemical industries, all electrical products used must be explosion-proof, and filters are naturally no exception, so the explosion-proof automatic roller shutter filter was born.

The explosion-proof automatic winding filter is mainly composed of filter material and explosion-proof system. Its working principle is the same as that of ordinary winding filters. The main difference lies in the installation of the explosion-proof system, which is safer. The explosion-proof level is Eexd IIBT4, and the protection level is IP55, materials include high-quality cold-rolled steel paint, aluminum profile and SUS304, strong structure, can meet the harshest working environment. For environments with high dust content, it can not only filter and remove pollutants, but also play a role in explosion protection. In addition, the maximum surface temperature of the equipment is 135°C, which can extend its working life.

Moreover, the explosion-proof automatic winding filter can not only purify the air, but also has the dual effect of explosion-proof. For some environments that contain flammable and explosive ingredients or extremely high dust content, it is necessary to use this filter. It can ensure the freshness of the air and at the same time ensure the safety of people’s lives and properties.

Under special environmental conditions, the explosion-proof automatic winding filter is required to play its dual functions of cleaning and explosion-proof.

ISO 16890 will be introduced into the International Organization for Standardization as a brand new filtration standard for testing and grading filters for general ventilation. The standard number is ISO16980. The standard was passed by 100% of all countries in the world. The EN 779 standard to evaluate air filters will soon become history. The International Organization for Standardization 16890 is coming soon. An 18-month transition period will begin at the end of 2016 and will replace the old standard in mid-2018. Hope that the filter manufacturers and customers in the same industry can understand these important regulatory changes and ensure sufficient time to adapt to the new standards.

In the United States ASHRAE52.2 is leading, Europe implements EN779, Asia and the Middle East, both standards are selected, and China has its own GB national standard. The new filter standard is of great significance to air filter manufacturers and users. 1. The top of the new standard aims to improve indoor air quality and protect personnel health. The entire testing process and classification system are closer to ambient air pollutants. 2. The global applicability of the new standard also eliminates the differences between current standards and eliminates Technical barriers to trade. In today’s globalized trade background, a large-scale construction project, the designer, engineering party and industry are likely to come from different countries. 3. For air filter manufacturers, make different manufacturers stand on the same standard platform to compete. 4 For users, comparing products under the same standard can make choices more intuitively, which is conducive to product innovation and user interests, and it is also conducive to eliminating the existence of some low-cost and inferior products in the market.

For many years, the World Health Organization and environmental authorities have been using particle size to assess air quality, and the industry now also follows this method. With the introduction of the new ISO 16890 test standard, the efficiency of the filter will be determined based on the classification of PM 1, PM 2.5 and PM 10. This ensures that the filter is evaluated more specifically and based on its actual performance. Compared with the previous two major standards, ISO6980 has absorbed advantages, discarded shortcomings, and proposed a very scientific test standard and grading system. The most significant advantage is that the filter efficiency test must be grouped for particulate matter. The efficiency of the filter will be determined by the particulate matter classification PM1, PM2.5, PM10. In the future, this will ensure that the filter is more evaluated by its actual operating performance, and at the same time, compared to the past, it will help users to select the appropriate filter more pertinently. For PM1 particles smaller than 1um, the new filtration efficiency and the need for efficiency after static elimination must exceed the minimum limit of 50% before it can be classified into the ePM1 efficiency group. This is important because more and more scientific reports show that PM1, as a fine particulate matter, is extremely harmful to human health.

Nanjing Yixi’s Ecolead automatic roller shutter filter series products are widely used in various types of VOC organic waste gas, rubber and PVC waste gas purification, artificial leather waste gas purification, spray paint mist purification, waste gas treatment generated by the textile industry stereotyped finishing process, metal processing, The oil fume and waste gas treatment in the food processing, building materials, hotel and catering industries, and hospitals, schools and other public utilities areas has the characteristics of stable and reliable technical performance, good treatment effects, low investment, automatic operation, and convenient maintenance and operation. Mainly used in machinery processing industry, petrochemical industry, chemical pharmaceutical industry, municipal waste industry, textile printing and dyeing, leather, food and other industries

1.   Features:
1. Automatically replace the filter material;
2. Pressure difference control;
3. Module assembly;
4. Sturdy structure;
5. The filter material can be presented in various forms such as vertical type, horizontal type, “V” type, etc.
6. Efficiency: G3, G4, F5, F6 (EN779)

2 .      Structure description:

Differential pressure discrimination : use the Dwyer differential pressure switch to monitor whether the filter material on the filter surface needs to be replaced, to avoid the waste of filter material and resources caused by human operation errors, and to ensure that the filter achieves the best filtration efficiency and the most economical operation mode during operation

Dual control of time /pressure difference: The pressure difference signal starts the filter material update program, and the time controls the filter material winding time. Each winding filter is strictly tested before leaving the factory, and the winding time of each material change is accurately preset. In the PLC control program of the roller shutter filter, accurate material change is realized, avoiding any waste of filter material, and keeping the equipment in the best filtering state

Filter material alarm reminder: When the entire filter material roll is nearly used up, the buzzer will alert the customer to replace the new filter material roll. At the same time, the signal will be transmitted to the upper level PLC control system, and the double insurance will prompt the replacement of a new filter roll material
Vertical design : standard winding of filter material from top to bottom
V-shaped design: The filter material is presented in a “V” shape, which increases the overall effective filtration area of the filter while reducing resistance. The effective filtration area is doubled and the initial resistance is reduced by half.

Horizontal horizontal design : the filter material is wound horizontally, patented design, maintenance personnel can complete the refueling work without entering the inside of the filter, the refueling is simple and convenient, and it is suitable for filtering places with large air volume and cannot be stopped.

3.   Material table :

Frame : industrial aluminum profile with sand surface oxidation, cold-rolled steel plate baking varnish, stainless steel materials are available for different use environments

New filter material box : sealed material box protects the new filter material from contamination in a dirty environment

Lower filter material reel : the effective filter area will be reduced after the old filter box is installed

Electric control cabinet : Siemens LOGO control, PLC control

Motor transmission device : high-performance environmentally friendly geared motor, ultra-low power 100W. Three-phase 380V or single-phase 220.50Hz power supply is optional

Filter material : synthetic fiber, the length is determined according to the length of the wound filter

Control function details :

Power indicator

Motor protection

Filter material alarm indication

Manual/automatic control conversion

Filter material exhaustion alarm signal output (passive signal dry contact)

Motor operation fault signal output (passive signal dry contact)

Differential pressure value display (optional)

4.   Product application areas:

Pre-filtration of air conditioning and ventilation systems

Paint mist exhaust gas filtration in painting workshop

VOC organic waste gas filtration

Rubber and PVC exhaust gas purification

Treatment of waste gas generated by the textile finishing process,

Metal processing waste gas treatment

Sewage treatment plant blower inlet air pre-filtering textile factory air conditioning return air filter equipment cooling industrial ventilation metallurgical industry sintering system purification power plant gas turbine air inlet system pre-filtering expressway equipment engine room or culvert ventilation subway and civil air defense engineering ventilation coal industry tunnels with large air volume ventilation Environment with high dust content and frequent replacement of filter media

With the increasing air pollution problem in recent years, thousands of FFU air purifiers have entered the civilian purifier market at low prices and high-efficiency filtration effects, squeezing out some of the market share of specialized civilian purifiers. Entering ordinary households, the function of FFU has been increased from industrial use to civilian use. The FFU filter removes the haze to people in the haze area and also brings secondary pollution. For most FFU purifiers currently on the market, we should examine the advantages and disadvantages of this product from a more professional perspective. Let’s take a closer look at the FFU purifiers currently on the market.

FFU advantages:

1. Maximum air volume: 1000-1200 cubic meters of household air volume is relatively large, Yuanda ta1000 air volume per hour is 1000 cubic meters, the price is 8K+ followed by Amway’s maximum air volume of more than 500 cubic meters, the price is amazing, and then IQAIR’s maximum air volume is 400 cubic meters and Taobao price is 8K+

2. Filtration efficiency: 99.97%@0.3um, 100%@0.5um, IQAIR 100%@0.5um in the field of home appliances

3. Market price : FFU package price is about 1,000 yuan, and the price of civilian purifiers is several times, even some foreign brands are more than 10,000 yuan.

FFU disadvantages:

1. FFU’s core component motor

The motor is the heart of any device and a decisive component. What kind of FFU air purification artifact is suitable for home use? Just look at the ability of FFU air purifier to remove smog compared to purifiers of more than 10,000 yuan. There is no problem at all. The filtering effect is leveraged, but FFU is still an industrial product after all, even if it is modified into There are still many problems with civilian purifiers. The primary problem is that 80% of manufacturers selling FFU air purifiers on the market do not distinguish between industrial use and civilian use. The FFU fans used in industry are basically equipped with heat dissipation holes. Because high temperature is generated inside the fan when the fan is running at high speed, in order to cool the fan, it is necessary to use heat dissipation holes. The fans in the civil field are all sealed low-temperature fans. After running for one or two hours, the surface temperature of the fan is basically not higher than 50 degrees, and it will not be hot to the touch. The lower the temperature of the fan, the better, but the cost will increase accordingly.

2. FFU filter parts high efficiency filter

One of the main problems of FFU purifiers now is the odor problem caused by industrial FFU modified products. The source of odor is mainly high efficiency filter element. The source of the smell of glass fiber filter paper: the glass fiber cotton needs to be acid washed before it can be fully dispersed. After washing with water, spray water-soluble glue and pulp composite. The water-soluble glue is acidic glue and will reduce its nature and release sour gas when the humidity is high. Washing will cause a large amount of residual acidic substances to release acidic gas for a long time. Industrial clean rooms such as operating rooms and electronic workshops will be delivered for use after several months of air-blowing operation and debugging, basically 12-24 hours of operation, with constant temperature and humidity system, 5-level filter system protection, fresh air system to compensate for fresh air, and sterilization system protection Prevent the growth of bacteria. The household purifier will humidify in winter. The humidity is too high and the indoor temperature is just suitable for the growth and reproduction of microbes and bacteria. The more microbes and bacteria multiply, the more metabolized, the greater the smell. The musty smell is also because the filter paper produced by the wet papermaking method is hydrophilic.

The above problems show the difference between civil FFU and industrial FFU. Only according to the characteristics of civil FFU purifiers, we can make FFU products that are more suitable for household use. As a professional FFU manufacturer, Nanjing Yixiou hopes that civilian FFU purifiers can be Only by making some optimizations and improvements on the basis of industrial use to use the segmented needs of the civilian market can the household FFU remain invincible, rather than a short-lived in the purifier market.

The technical requirements for bidding of the Ecolead automatic winding coarse air filter of Nanjing Yixiou are as follows:

Install a roller blind filter at the total inlet duct of the blower system of the sewage treatment plant to filter the air with initial efficiency. The design filter air volume is not less than 1.3 times the design total air volume, and the design passing wind speed is less than 2m/s , the maximum Allowable resistance ≤150Pa , filtration efficiency above 2 microns, above 85% , and automatic winding and automatic alarm display functions.

A technical requirements and materials

Ecolead automatic winding type coarse air filter 3 sets

Single set of processing air volume: more than 32400 m3/h

Filtration speed: 1.5 ～ 2.0 m/s

Filtration efficiency:

For dust particles> 1μm , the counting efficiency η≈55 ％

For dust particles> 2μm , the counting efficiency η≈86 %

For dust particles> 5μm , the counting efficiency η≈90 %

For dust particles> 8μm , the counting efficiency η≈95 %

Material: carbon steel

Anti-corrosion measures: spray plastic. The surface of carbon steel is treated in accordance with the national standard: HG/T2597-94 , pickled, degreasing, and phosphating. The material used for the topcoat is polyester epoxy with a thickness of 50-70μm .

B working principle of automatic winding air filter

When the air containing dust passes through the filter, the dust is blocked in the fiber layer of the filter material. When the resistance of the fiber layer increases to the upper limit pressure difference due to agglomeration of dust, the automatic control system starts to start the motor, automatically winds to replace the clean filter material, and the filter remains in the normal resistance state, thereby ensuring the normal operation of the ventilation system.

C control principle

The roller shutter air filter of Nanjing Yixiou Company has two control methods:

a. Manual control method:

The user can change the filter material by pressing the motor start switch at any time according to the site conditions.

b. Using differential pressure control method:

The principle is: set value is reached by the differential pressure before and after the filter ceiling (260pa ~ 300 pa), micro-differential pressure sensor outputs a signal to control the motor starts, the clean replacement filter. When the differential pressure reaches the set lower limit ( 60pa ~ 80pa ), the differential pressure sensor outputs a signal to control the motor to stop working. The control system is equipped with a material end alarm signal. (When the clean filter material in the upper box is about to be used up, the limit controller sends an electric signal to the alarm, and the alarm buzzes to notify the replacement of the new material.) And the equipment alarm signal, fault signal, and operating signal should be sent to the system PLC .

D Ecolead wrap-around air filter scope of supply

1 set of complete equipment, each set includes:

a. On the box:

It is used to store clean filter materials. The filter materials are drawn out from the bottom of the box for easy operation. The box body is equipped with a limit plate to activate the limit controller and increase the friction force on the filter material roll stored in the upper box to prevent the filter material from falling off the roll due to its own weight. When the new material roll is loaded, the material roll is required to be regular In order to avoid deflection, ventilation and other phenomena during operation, which will affect the filtration efficiency . The top collision position of the limit plate should be adjusted accurately before use to avoid premature alarm or loss of effect. δ can be adjusted to the compression thickness of 1 to 2 layers of filter media. .

b. Lower box:

It is used to store the contaminated filter material. There are feeding rollers, transmission shafts, sprocket wheels, couplings, and pressure plates for tightening the filter materials. The unloading roller has an elastic shaft head, which can shorten and extend the shaft, so the filter material can be easily replaced.

c. Column:

Connecting parts of upper box and lower box

d. Blocking column:

It is connected with the column as a whole, supports the filter material under negative pressure, and makes the filter material form a plane to effectively block the dust in the air.

e. Press bar:

When the resistance of the filter material is greater than the set value, the filter material can move between the stop bar and the press bar; the press bar can prevent the displacement of the filter material caused by the return air of the fan.

f. Filter material:

Polypropylene fiber is selected as the filter medium, which has the characteristics of high filtration efficiency, large dust holding capacity, and good air permeability. The structure is mostly in a density gradient arrangement. This chemical fiber composite material has good comprehensive performance of ventilation and dust removal, high strength, and temperature resistance. , Good chemical stability, etc.

g. Transmission mechanism:

When the filter material is blocked by the dust in the atmosphere and cannot meet the requirements of use, the differential pressure sensor sends a signal to the control box, and the transmission mechanism starts the filter material and automatically winds and replaces the filter material until the initial resistance reaches the set value.

h. Automatic control box:

The automatic control box is composed of push-button switches, AC contactors, time relays, differential pressure sensors, automatic/manual transfer switches and other components. The wall-mounted cabinet makes installation more convenient.

The above are the general technical requirements for environmental protection engineering companies and blower manufacturers in the sewage treatment industry to purchase Nanjing Yixiou Roller Blind Air Filters. The editor will organize and publish them for reference by relevant parties.

Why choose automatic winding filter instead of ordinary plate and frame filter?

Everyone knows that installing a primary filter plays a decisive role in the entire air-conditioning fan or aerodynamic equipment.

The primary filter can meet the following requirements:

1. Effectively dispose of indoor air pollution, such as dust, and provide fresher air ;

2. Effectively prevent the appearance of stains around the air outlet of the air conditioner, and extend the service life of the equipment ;

3. The corresponding standard requirements are fulfilled in different levels of clean rooms. If the clean room wants to reach a certain level of cleanliness, it must be installed with a primary filter to effectively filter the air entering the room ;

4. Deal with the appearance of serious dust accumulation in components such as fans, heat exchangers, pipes, etc., and also have the effect of removing peculiar smells.

However, in actual use, it is difficult for us to predict the service life of the primary filter, so we need to regularly test or check the resistance of the primary filter to avoid saturation and clogging of the filter element.

If the primary filter is not replaced in time, it will inevitably lead to a decrease in suction and a decrease in filtration accuracy.

If the primary filter is a common plate and frame filter, there are the following problems:

1) Intermittent operation

2) High labor intensity

3) Low production efficiency

Therefore, for the above-mentioned working environment , the automatic winding air filter produced by our company (Nanjing Ecolead )

Has the following characteristics:

1. The workload of operation and maintenance is small – because the winding filter equipment is equipped with a filter material roll ( 15 meters long), if the equipment is 2 meters high, the filter material roll can be used 6-7 times. As long as the set pressure difference resistance is reached, the dirty filter material will roll down. No need for human monitoring and control.

2. The self-winding filter has a strong structure and can adapt to large negative pressure ventilation;

3. It can work continuously all year round to minimize the number of downtimes;

4. The transmission accessories of the automatic winding filter , the transmission motor and the intelligent PLC control are strictly required to operate in harsh environments. Therefore, the automatic winding filter of Nanjing Yixio definitely reduces the operating cost with stable quality;

It can be seen that the automatic winding filter is the most important basis for people to choose this equipment!

Why choose automatic winding filter instead of ordinary plate and frame filter?

Everyone knows that installing a primary filter plays a decisive role in the entire air-conditioning fan or aerodynamic equipment.

The primary filter can meet the following requirements:

1. Effectively dispose of indoor air pollution, such as dust, and provide fresher air ;

2. Effectively prevent the appearance of stains around the air outlet of the air conditioner, and extend the service life of the equipment ;

3. The corresponding standard requirements are fulfilled in different levels of clean rooms. If the clean room wants to reach a certain level of cleanliness, it must be installed with a primary filter to effectively filter the air entering the room ;

4. Deal with the appearance of serious dust accumulation in components such as fans, heat exchangers, pipes, etc., and also have the effect of removing peculiar smells.

However, in actual use, it is difficult for us to predict the service life of the primary filter, so we need to regularly test or check the resistance of the primary filter to avoid saturation and clogging of the filter element.

If the primary filter is not replaced in time, it will inevitably lead to a decrease in suction and a decrease in filtration accuracy.

If the primary filter is a common plate and frame filter, there are the following problems:

1) Intermittent operation

2) High labor intensity

3) Low production efficiency

Therefore, for the above-mentioned working environment , the automatic winding air filter produced by our company (Nanjing Ecolead )

Has the following characteristics:

1. The workload of operation and maintenance is small – because the winding filter equipment is equipped with a filter material roll ( 15 meters long), if the equipment is 2 meters high, the filter material roll can be used 6-7 times. As long as the set pressure difference resistance is reached, the dirty filter material will roll down. No need for human monitoring and control.

2. The self-winding filter has a strong structure and can adapt to large negative pressure ventilation;

3. It can work continuously all year round to minimize the number of downtimes;

4. The transmission accessories of the automatic winding filter , the transmission motor and the intelligent PLC control are strictly required to operate in harsh environments. Therefore, the automatic winding filter of Nanjing Yixio definitely reduces the operating cost with stable quality;

It can be seen that the automatic winding filter is the most important basis for people to choose this equipment!