Filter for bag type dust collector
Technical field
Filter for bag type dust collector of the present invention belongs to the cleaner technical field.
Background technology
The structure of filter is in the existing sack cleaner: the inboard of the diffusion end of Venturi tube directly is fixed on the upper surface of filter bag framework upper flange, the serrated end of Venturi tube stretches in the filter bag framework, the end that stretches in the filter bag framework of Venturi tube overlaps with filter bag framework and filter bag like this, cause the filter bag of coincidence place not play the effect of filtration, reduced filter area, simultaneously, because the end that is shaped as of Venturi tube spreads, one end shrinks, shrinking an end extend in the filter bag framework, work causes the resistance of Venturi tube serrated end big, influence dust removing effects, when spraying the cleaning filter bag with air-flow, the filter bag of coincidence place can not get cleaning, and the resistance of Venturi tube serrated end is big, influences cleaning effect.
Summary of the invention
Filter for bag type dust collector of the present invention provides a kind of filter for bag type dust collector that reduces gas-flow resistance, improves effective filtration area.
In order to address the above problem, filter for bag type dust collector of the present invention, its main technical schemes is: filter for bag type dust collector, mainly comprise Venturi tube 1, filter bag framework 2 and filter bag 3, its technical characterictic is:: evenly fix 2~8 support members 4 on the upper surface 6 of the upper flange 5 of filter bag framework 2, the outside at the diffusion end 7 of the upper surface fixed installation Venturi tube 1 of support member 4 makes and leaves the space between filter bag framework 2 and the Venturi tube 1.
The nominal diameter of described filter bag framework 2 is 5~13: 1 with the ratio of the height of support member 4, and the ratio of optimum height is 9~11: 1.
Described support member 4 be shaped as cylinder, cube, cuboid, triangular prism, quadrangular, pentagonal prism or six prisms.
Filter for bag type dust collector of the present invention is compared with filter in the existing sack cleaner has following technique effect:
1, improved effective filtration area: because the present invention is installed in the filter bag framework outside with Venturi tube, make the filter area of filter bag reach maximum, can improve 10%~20% of filter bag filter area effectively.
2, reduce gas-flow resistance, energy-efficient: because the present invention is installed in the filter bag framework outside with Venturi tube by support member, the nominal diameter of filter bag framework 2 is 5~13: 1 with the ratio of the height of support member 4, make the gap that 10~30mm is arranged between Venturi tube and the filter bag framework, the airflow diversion that the serrated end of original Venturi tube can be assembled during work is in the gap between Venturi tube and the filter bag framework, increased gas flow rate, thereby arrived energy-efficient.
3, easy to clean, effective: because the present invention is installed in the filter bag framework outside with Venturi tube, when spraying the cleaning filter bag with air-flow, can the whole cleanings of filter bag are clean.
Description of drawings
The present invention is described in more detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of filter for bag type dust collector of the present invention;
Fig. 2 is the enlarged diagram of support member 4 embodiment 1 among Fig. 1;
Fig. 3 is the enlarged diagram of support member 4 embodiment 2 among Fig. 1;
Fig. 4 is the enlarged diagram of support member 4 embodiment 3 among Fig. 1;
Fig. 5 is the enlarged diagram of support member 4 embodiment 4 among Fig. 1;
Fig. 6 is applied in structural representation in the sack cleaner for filter for bag type dust collector of the present invention.
The specific embodiment
Fig. 1 is the structural representation of filter for bag type dust collector of the present invention, and Fig. 2~5 are the structural representation of support member 4.Filter for bag type dust collector mainly comprises Venturi tube 1, filter bag framework 2 and filter bag 3; On the upper surface of the upper flange of filter bag framework, evenly fix 2~8 support members, fixedly mount the outside of the diffusion end of Venturi tube at the upper surface of support member, the internal diameter of filter bag framework is 5~13: 1 with the ratio of the height of support member, make diffusion end 7 and the upper surface 6 of the upper flange 5 of bag framework 2 of Venturi tube 1 form the gap of 10-30mm, gas after helping to filter passes through, the quantity of support member 4 is 2~8 and (can be 2,3,4,5,6 or 8), the model of Venturi tube 1 can be: W-130, W-160 etc., the model of filter bag framework 2 is: φ 130mm * 2000mm, φ 130mm * 2500mm etc., this moment, the height of support member 4 can be: 10mm, 13mm, 15mm, 18mm, 20mm, the model of filter bag framework 2 is: φ 160mm * 3000mm, φ 160mm * 4000mm etc., this moment, the height of support member 4 can be: 15mm, 18mm, 20mm, 25mm, 30mm, the model of filter bag 3 can be: φ 130mm, φ 160mm etc., this moment, the height of support member 4 can be: 10mm, 13mm, 15mm, 18mm, 20mm, support member 4 is a cylinder among Fig. 2, Fig. 3 is that middle support member 4 is the cylinder of TBE (threaded both ends) boss, available screw is fixed together the upper flange 5 of filter bag framework 2 and the diffusion end 7 of Venturi tube 1 by the endoporus of support member 4, support member 4 is a cylindrical sleeve among Fig. 4, and support member 4 is a cuboid among Fig. 5.
The application of Fig. 6 filter for bag type dust collector of the present invention in the pulse backblowing sack cleaner, casing 9 can be divided into the lower box 10 of bottom for terrace with edge or frustum cone structure, the middle part is the middle casing 11 of column type or square chest type structure, the top is that the upper box 12 of column type or square chest type structure is formed, (model is YJD-16 in the lower end of lower box 10 an electronic unloading valve 13 to be installed, YJD-25 etc.), lower box 10 sides are provided with air inlet 14, a card 15 that has a plurality of apertures is fixed on the top of middle casing 11, in each aperture of card 15, fix a filter for bag type dust collector 8 of the present invention, the top-side of upper box 12 is provided with a gas outlet 16, upper box 12 bottoms are equipped with a cover air pulse back-blowing device 17, each gas outlet of air pulse back-blowing device 17 all be positioned at filter for bag type dust collector 8 directly over, the escape pipe of air pulse back-blowing device 17 connects pulse valve 18 successively, and (model is MCF-16, MCF-25 etc.), gas bag 19 (model is QB-325).