High-dust-holding medium-efficiency trapezoidal filter bag
A filter bag and dust-holding technology, which is applied in the field of medium-efficiency bag filters, can solve the problems of increased use cost, short service life, and high structural resistance, and achieve the effects of reducing initial resistance, ensuring efficiency, and increasing dust holding capacity
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Embodiment 1
[0020] The present invention provides a technical solution: high dust-holding medium-efficiency trapezoidal filter bag, please refer to figure 1 and image 3 ,include,
[0021] The filter bag body 1, the vertical section of the filter bag body 1 is trapezoidal, and the area of the cross section of the filter bag body 1 gradually increases from bottom to top; and,
[0022] The mounting part 2, the mounting part 2 is installed on the bottom wall of the filter bag body 1, and the cross section of the mounting part 2 is rectangular and hollow;
[0023] see figure 1 and figure 2 , the filter bag body 1 is sequentially composed of a pre-filter layer 101, a two-component melt-blown layer 102, a fiber melt-blown layer 103 and a spunbond layer 104 from the inside to the outside. The pre-filter layer 101 refers to the coarse fiber hot air cotton. It is to filter large particles of dust above 1um, play a pre-protective role on the back layer of melt-blown fibers, improve the suppo...
Embodiment 2
[0028] see figure 1 and image 3 , on the basis of Example 1, a sealing strip 21 is installed on the bottom wall of the mounting part 2, the mounting part 2 is an area used to connect with the filter frame, the material of the mounting part 2 is consistent with that of the filter bag body 1, and the sealing strip 21 It is an elastic sealing strip, and the sealing strip 21 is made of rubber material, which has certain elasticity and can be extended. The inner cavity of the sealing strip 21 is provided with an air storage tank 23, and the inner cavity of the air storage tank 23 is filled with air. When the filter bag body 1 is connected with the frame, the frame will squeeze the sealing strip 21, so that the sealing strip 21 extends and fully fits the frame, so that there will be no gap between the mounting part 2 and the frame, and the mounting part 2 A groove is provided at the connection part with the sealing strip 21, and Velcro 22 is installed on the inner cavity of the gr...
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