The current use of bag dust collector is very much, and the types of bag dust collector products sold on the market are also very much. So, why do you choose round cloth bags? Here is a detailed introduction for you.
Things to pay attention to in daily life of bag dust collector:
1. Repair and maintenance
Always check the control cabinet, pulse valve and dust bag, dust skeleton, electromagnetic pulse valve, etc. The failure of the rubber diaphragm of the electromagnetic pulse valve is a common fault, which directly affects the dust removal effect of the pulse dust collector. In addition, check the oil-water separator and clean it frequently to keep it running unobstructed.
2. Resistance problem
By observing the U-type differential pressure gauge, to judge the condition of the equipment. If the pressure difference is increased, it means that the dust bag is blocked, there is water vapor condensation on the filter bag, the ash cleaning tissue fails, the ash hopper accumulates too much resulting in the blockage of the filter bag, and the gas flow increases. There are leakage phenomena between the box or each chamber, and the fan speed is slow.
3. Operation record
Ventilation and dust removal equipment should be installed on the corresponding test instrument, regular measurement in daily operation, and record, for future review, find out the problem, timely discharge the fault, to ensure the normal operation of the pulse dust collector equipment.
Why do you choose round dust bag
There are many kinds of material of dust bag, and the commonly used material of dust bag is generally synthetic fiber. According to the actual need, the cloth is sewn into a cylinder or flat cloth bag. According to the properties of flue gas, filter material suitable for application conditions is selected. Generally, when the flue gas temperature is lower than 120℃ and the filter material is required to have acid resistance and durability, polypropylene and polyester needled felt are often used; In the treatment of high temperature flue gas (<250℃), the main choice of graphitized glass fiber; In some special cases, the use of carbon fiber filter material. It is very important to control the speed of the flue gas passing through the filter material in the operation of the bag dust collector (called the filter wind speed). Generally, the filtration speed is 0.5-2m /min, and the efficiency can reach more than 99.9% for particles greater than 0.1μm.
The filter bag is made of textile filter cloth and non-woven cloth, and the textile filter cloth has 729 filter cloth, 208 filter cloth, canvas and so on. Non-textile filter cloth has polyester needle felt, PPS needle felt, glass fiber needle felt, etc. The filter cloth uses the filtration effect of the fiber fabric to filter the dust containing gas.
Dust bags can be divided into three kinds according to the temperature of use
1, room temperature cloth bag: room temperature cloth bag is mainly made of polyester, polypropylene, and other fibers by non-woven, textile process, with good air permeability, smooth surface, good dimensional stability, easy to peel dust and other excellent properties. Mainly used in general industrial enterprises with dust pollution industry dust removal and room temperature flue gas treatment and other fields;
With the improvement of environmental protection, especially in recent years, the rapid development of bag dust removal technology industry, China began to use imported synthetic fibers to develop high-performance filtration materials that can adapt to more harsh working conditions and long service life. At present, the more common medium temperature filter materials are aramid fiber, acrylic, yellow meter, PPS series fiber through dipping, waterproof, oil-proof, anti-corrosion process, so as to achieve the ideal effect;
High temperature bag: high temperature bag is mainly made of P84, bulking yarn, PTFE filter cloth, ultra-fine glass fiber and other high temperature fiber through textile or non-woven processing, with good thermal stability, high filtration efficiency, long service life and other characteristics. It is mainly used for dust removal under various high temperature flue gas conditions.
The selection of dust bag is not necessarily the higher the price, the better, according to the temperature of the filter dust, mesh, corrosion, humidity, viscosity, emission concentration, etc., to choose the appropriate bag. Welcome to inquire we will choose the right dust bag material for you according to your working conditions.
The bag shape of the pulse bag filter is cylindrical, trapezoid, etc. The selection of the filter bag directly affects the dust removal effect of the dust removal equipment, which is an important part of the dust removal equipment. The selection of the shape of the dust collector bag has a great relationship with the filtration area of the dust removal equipment, environmental protection and you introduce the characteristics of these two kinds of bags.
1, the use of mechanical vibration cleaning, round bag than trapezoidal bag save power, but trapezoidal bag cleaning more symmetrical;
2, the spacing between trapezoidal bag and trapezoidal bag is small, if the amount of dust is large, or there is a thicker fibrous dust, it is easier to block. In general, the flat bag dust collector should be used in the lower plant, or used as a plug-in dust collector, installed in the local vacuum cleaner.
3, if the length of the circular dust filter bag is large, the filter area per unit area of the ground can be more than the flat bag;
4, in the pulse blowing dust cleaning, trapezoidal dust bag than the circular dust filter bag deformation, so after blowing the filter bag retraction and dust skeleton collision effect is strong, resulting in more dust leakage, and dust removal from the flat bag migration to the adjacent filter bag than the round bag serious.
5, the same volume of the bag filter, trapezoidal filter bag than the round bag can be 20%-40% more filtration area. The trapezoidal cloth bag can be drawn horizontally from the side of the dust collector, and the top does not need to have a high space;
6, trapezoidal cloth bag due to poor sealing and dust leakage opportunities than round bag;
According to the area of a single circular filter bag in the process of filter bag processing, because the filter bag is fixed on the flower plate or short tube, some also need to be hung up and fixed on the bag cap, so the two ends of the filter bag need double sewing or even multi-layer sewing: this part of the double sewing has no filtering effect due to increased resistance, and some dust collector bags also have a fixed ring in the middle, this part has no filtering effect. In the large and medium-sized backblower dust collector, the filter bag is 10m long and 0.292m in diameter, and its nominal filtration area is 0.0292×10=925m; If the area without filtration is 0.75m, the net filtration area is 8.25-0.75=7.5m. It can be seen that the useless filtration area of the filter bag accounts for 5% to 10% of the filter bag area, so the net filtration area size should be indicated in the specifications of the large and medium dust collector.
Round bags can adapt to all kinds of dust, and it is convenient to make and change cloth bags, and the cost is low, so the bag dust collector chooses round dust bag.
The above is part of the bag dust collector, after understanding these, we will be more targeted in the choice, so as to help you choose a most suitable for their own dust collector, play a better use value, for the enterprise to bring better help.