A dust filter

Abstract

The utility model provides a dust removal filter, including the filter core of oval, the inside frame, folding filter paper and outside frame are sequentially provided with from inside to outside to filter core, the inside frame and outside frame are close to the side of folding filter core and are provided with a plurality of circles hot melt adhesive strip, the inside frame is fixed with folding filter paper's inside through hot melt adhesive strip and bonds, the outside of folding filter core is fixed with outside frame through hot melt adhesive strip and bonds, the utility model makes folding filter paper and corresponding frame bond fixed, prevent filter paper deformation under pressure, improve the service life of folding filter paper.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a dust removal filter. Background Technology

[0002] Folded filter paper type dust collector filter cartridges typically include an inner skeleton, folded filter paper, and an outer skeleton. The inner and outer skeletons are used to support the folded filter paper. The folded filter paper abuts against the skeleton but is not connected. During the dust removal or backwashing process, it is prone to deformation under pressure, which affects the filtration effect and the service life of the filter cartridge.

[0003] In addition, the lower end of the filter element in existing pulse backwash dust filters is mostly suspended. When the medium passes through the filter element, it is easy to cause the filter element to vibrate, which affects the filter element's performance. Moreover, the lack of a coarse filter plate makes the filter element prone to clogging, thus increasing the backwash frequency. Utility Model Content

[0004] This utility model proposes a dust removal filter that bonds and fixes the folded filter paper to the corresponding frame, preventing the filter paper from being deformed by pressure and improving the service life of the folded filter paper.

[0005] The technical solution of this utility model is implemented as follows: A dust filter includes an elliptical filter element. The filter element is provided with an inner skeleton, folded filter paper and an outer skeleton from the inside to the outside. Several rings of hot melt adhesive strips are provided on the side of the inner skeleton and the outer skeleton near the folded filter element. The inner skeleton is bonded and fixed to the inner side of the folded filter paper by the hot melt adhesive strips, and the outer side of the folded filter element is bonded and fixed to the outer skeleton by the hot melt adhesive strips.

[0006] Furthermore, a first end ring is bonded and fixed to one end of the filter element, and a second end ring is bonded and fixed to the other end. A sealing ring is provided on the side of the first end ring away from the filter element, and the sealing ring and the first end ring are an integral structure.

[0007] Furthermore, it also includes an outer casing, with an air outlet at the upper end and a drain outlet at the lower end. A horizontal coarse filter plate is installed inside the casing, and a positioning plate is installed above the coarse filter plate. Several vertical filter elements are installed between the positioning plate and the coarse filter plate. The positioning plate has air outlets that correspond one-to-one with the filter elements. The coarse filter plate and the filter elements are detachably connected to the positioning plate through connectors. An air inlet is installed on the outer casing on the lower side of the coarse filter plate.

[0008] Furthermore, the connector includes a vertical Y-shaped connecting rod, the upper part of which is connected to the positioning plate, and the lower part is provided with a detachable T-shaped end sealing plate. The filter element is fitted onto the outside of the Y-shaped connecting rod, the second end ring abuts against the end sealing plate, and the sealing ring abuts against the lower side of the positioning plate.

[0009] Furthermore, the lower end of the Y-shaped connecting rod passes through the middle of the end sealing plate and the coarse filter plate in sequence, and is then screwed with a lock nut. A sealing gasket is provided at the junction of the end sealing plate and the coarse filter plate.

[0010] Furthermore, a backflush pipe is provided inside the outer casing above the positioning plate, and a downward-facing backflush nozzle is provided on the backflush pipe.

[0011] The beneficial effects of this utility model are: The filter element of this invention uses hot melt adhesive strips to bond and fix the folded filter paper to the corresponding frame, preventing the filter paper from deforming under pressure and improving the service life of the folded filter paper.

[0012] The dust filter of this utility model uses a coarse filter plate to perform initial filtration of the medium. Large particles of impurities are trapped and fall to the bottom of the outer shell, and are subsequently discharged through the drain port.

[0013] The connector of this utility model has a simple structure, which facilitates the assembly and disassembly of the filter element and the coarse filter plate. Moreover, both the filter element and the coarse filter plate are fixed by the connector, which simplifies the installation process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the filter element structure; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the dust filter structure in Example 2.

[0016] Filter element 1, inner frame 2, pleated filter paper 3, outer frame 4, hot melt adhesive strip 5, first end ring 6, second end ring 7, sealing ring 8, outer shell 9, air outlet 10, drain outlet 11, coarse filter plate 12, positioning plate 13, air outlet 14, air inlet 15, Y-type connecting rod 16, end sealing plate 17, locking nut 18, sealing gasket 19, positioning convex ring 20, backflushing pipe 21, backflushing nozzle 22. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1 like Figure 1 and 2 As shown, a dust collector filter includes an elliptical filter element. The elliptical shape effectively increases the filtration area and extends the filter's service life. The filter element comprises, from the inside out, an inner frame 2, pleated filter paper 3, and an outer frame 4. Both the inner frame 2 and the outer frame 4 have several rings of hot melt adhesive strips 5 coated on the side closest to the pleated filter element 1. Adjacent hot melt adhesive strips 5 are spaced apart. The inner frame 2 is bonded and fixed to the inner side of the pleated filter paper 3 via the hot melt adhesive strips 5, and the outer side of the pleated filter element 1 is bonded and fixed to the outer frame 4 via the hot melt adhesive strips 5. The hot melt adhesive strips 5, in conjunction with the inner frame 2 and the outer frame 4, are used to fix and support the pleated filter paper 3, preventing it from deforming under pressure. Deformation of the filter paper would affect the filtration effect.

[0019] One end of the filter element is bonded and fixed with a first end ring 6, and the other end is bonded and fixed with a second end ring 7. A sealing ring 8 is provided on the side of the first end ring 6 away from the filter element. The sealing ring 8 and the first end ring 6 are integral structures. Both the first end ring 6 and the second end ring 7 are provided with annular positioning grooves on their opposite sides. The end of the filter element is placed in the annular positioning groove and bonded and fixed.

[0020] Example 2 This embodiment is basically the same as Embodiment 1, except that: Figure 3 As shown, a dust removal filter also includes a housing 9. An air outlet 10 is fixed at the upper end of the housing 9, and a drain outlet 11 is fixed at the lower end. A drain valve (not shown in the figure) is installed at the drain outlet 11. The drain valve is normally closed. When it is necessary to remove particulate impurities, the drain valve is opened. The drain valve is an existing structure and can be a manual ball valve or an electric ball valve, etc.

[0021] A horizontal coarse filter plate 12 is provided inside the outer casing. A positioning plate 13 is fixed inside the outer casing above the coarse filter plate 12. Several vertical filter elements 1 are provided between the positioning plate 13 and the coarse filter plate 12. An air outlet 14 corresponding to each filter element 1 is provided on the positioning plate 13. The coarse filter plate 12 and the filter elements 1 are detachably connected to the positioning plate 13 through a connector. An air inlet 15 is fixed on the outer casing 9 on the lower side of the coarse filter plate 12.

[0022] The connector includes a vertical Y-shaped connecting rod 16. The upper part of the Y-shaped connecting rod 16 is fixedly connected to the positioning plate 13, and the lower part is provided with an end sealing plate 17. The lower end of the Y-shaped connecting rod 16 passes through the filter element 1, the middle part of the end sealing plate 17 and the coarse filter plate 12 in sequence, and then is screwed with a locking nut 18. A sealing gasket 19 is placed at the junction of the end sealing plate 17 and the coarse filter plate 12.

[0023] The filter element 1 is fitted onto the outside of the Y-shaped connecting rod 16. A positioning protrusion 20 is provided on the end sealing plate 17. The second end ring 7 abuts against the end sealing plate 17, and the positioning protrusion 20 is placed inside the second end ring 7. The sealing ring 8 abuts against the lower side of the positioning plate 13. A backwash pipe 21 is fixed inside the outer shell 9 above the positioning plate 13. A downward-facing backwash nozzle 22 is fixed on the backwash pipe 21. The backwash pipe 21 is connected to the backwash device.

[0024] When installing the filter element 1, with the sealing ring 8 facing upwards, the filter element 1 is fitted onto the Y-shaped connecting rod 16. Then, the lower end of the Y-shaped connecting rod 16 is passed sequentially through the end sealing plate 17, the sealing gasket 19, and the coarse filter plate 12. Finally, the locking nut 18 is tightened. The gas to be filtered enters the outer casing 9 through the air inlet 15, passes through the coarse filter plate 12 to remove large particulate impurities, and then passes through the filter element 1 before being discharged sequentially through the air outlet 14 and the air outlet 10.

[0025] When filter element 1 needs backflushing, backflushing gas enters the housing 9 through backflushing pipe 21 and backflushing nozzle 22, and then enters filter element 1 through air outlet 14. It flows in the reverse direction, flushing the particulate impurities attached to filter element 1 and coarse filter plate 12 into the bottom of housing 9, and finally discharges through drain outlet 11.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dust removal filter, characterized in that: The filter includes an elliptical filter element, which consists of an inner skeleton, pleated filter paper, and an outer skeleton arranged sequentially from the inside out. Both the inner skeleton and the outer skeleton have several rings of hot melt adhesive strips on the side closest to the pleated filter element. The inner skeleton is bonded and fixed to the inner side of the pleated filter paper by the hot melt adhesive strips, and the outer side of the pleated filter element is bonded and fixed to the outer skeleton by the hot melt adhesive strips.

2. A dust removal filter according to claim 1, characterized in that: One end of the filter element is bonded and fixed with a first end ring, and the other end is bonded and fixed with a second end ring. A sealing ring is provided on the side of the first end ring away from the filter element. The sealing ring and the first end ring are an integral structure.

3. A dust removal filter according to claim 1 or 2, characterized in that: It also includes an outer shell, with an air outlet at the top and a drain outlet at the bottom. Inside the shell is a horizontal coarse filter plate, with a positioning plate above it. Several vertical filter elements are positioned between the positioning plate and the coarse filter plate. The positioning plate has air outlets that correspond one-to-one with the filter elements. The coarse filter plate and the filter elements are detachably connected to the positioning plate via connectors. An air inlet is provided on the outer shell below the coarse filter plate.

4. A dust removal filter according to claim 3, characterized in that: The connector includes a vertical Y-shaped connecting rod. The upper part of the Y-shaped connecting rod is connected to the positioning plate, and the lower part is provided with a detachable T-shaped end sealing plate. The filter element is fitted on the outside of the Y-shaped connecting rod. The second end ring abuts against the end sealing plate, and the sealing ring abuts against the lower side of the positioning plate.

5. A dust removal filter according to claim 4, characterized in that: The lower end of the Y-shaped connecting rod passes through the middle of the end sealing plate and the coarse filter plate in sequence, and is then screwed with a lock nut. A sealing gasket is provided at the junction of the end sealing plate and the coarse filter plate.

6. A dust removal filter according to claim 3, characterized in that: A backflush pipe is installed inside the outer casing above the positioning plate, and a downward-facing backflush nozzle is installed on the backflush pipe.

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