Bag filter and bag type folding filter element thereof

Abstract

A bag filter and a bag-type folding filter element thereof are characterized in that a cylinder cover capable of being opened and closed is arranged on a cylinder shell, the bag-type folding filter element and a pressure plate group are detachably arranged in the cylinder shell, the bag-type folding filter element comprises a core pipe, a folding filter material, an outer pipe, an inner pipe and a positioning plate, the folding filter material is arranged on the outer edge of the core pipe in a surrounding manner, and the positioning plate is arranged on the outer edge of the core pipe. An inner pipe at the bottom end of the positioning disc extends into the core pipe and the top cover, the positioning disc is provided with a pipe hole communicated with the inner pipe, a sealing gasket is arranged on the outer edge of the positioning disc, and a hand lifting part avoiding the center of the pipe hole is arranged on the inner edge of the pipe hole, so that the pressing disc group can really extrude the positioning disc and the sealing gasket for airtight positioning; and the bag type folding filter element can filter pollutants with the size of 0.001 mu m or more, so that the bag type folding filter element meets the use requirements of precision electronic industry equipment.

Description

Technical Field

[0001] This invention relates to a bag filter, and more particularly to a bag filter and its bag-type pleated filter element. Background Technology

[0002] Current bag filters are mainly used for filtering and separating pollutants in fluids, such as... Figure 1 and Figure 2 As shown, the bag filter 9 includes a cylindrical shell 91, a cylindrical cover 92, a support mesh 93, a filter bag 94, and a pressure plate assembly 95. The cylindrical cover 92 is openably closed on the cylindrical shell 91. The support mesh 93 is placed downwards inside the cylindrical shell 91, and the top of the support mesh 93 is positioned on the fixing ring 911. The filter bag 94 is placed downwards inside the support mesh 93. The pressure plate assembly 95 is then placed downwards and fixed inside the cylindrical shell 91. The movable pressure plate 951, in conjunction with the compression force of the spring 952, presses downwards to close the filter bag 94 and the top periphery of the fixing ring 911. The pressure plate assembly 95 is closer to the movable pressure plate 951, and the corresponding center rod 953 and nut 954 extend downwards below the movable pressure plate 951, allowing the center rod 953 to extend further into the filter bag 94.

[0003] In a traditional bag filter 9, fluid flows into the filter bag 94 through the inlet 912 of the shell 91, is filtered by the filter bag 94, and then flows out from the outlet 913 of the shell 91, achieving the desired filtration effect. However, the filter bag 94 used in the bag filter 9 can only filter pollutants larger than 1μm, which fails to meet the actual needs of precision electronics equipment and does not provide high-precision filtration. Therefore, a pleated filter must be used for subsequent filtration, increasing the system's filtration process costs and time. Therefore, how to solve these problems is a pressing research topic for industry professionals. Summary of the Invention

[0004] The main objective of this invention is to provide a bag filter with a pleated filter element inside the bag filter. The pleated filter element has a sealing gasket on the outer edge of the positioning plate and a handle that avoids the center of the tube hole on the inner edge of the tube hole. This allows the pressure plate assembly to effectively press the positioning plate and the sealing gasket for airtight positioning, enabling the pleated filter element to filter pollutants larger than 0.001μm, thereby meeting the usage requirements of precision electronic equipment.

[0005] To achieve the above objectives, the bag filter of the present invention includes a shell, a cover, a bag-type pleated filter element, and a pressure plate assembly. The cover is detachably closed onto the opening of the shell, while the bag-type pleated filter element and the pressure plate assembly are detachably disposed within the shell. The bag-type pleated filter element includes a core tube, pleated filter media, an outer tube, an inner tube, and a positioning plate. The core tube is a hollow tube with multiple guide holes on its surface. The pleated filter media surrounds the outer edge of the core tube, and the pleated filter media are arranged sequentially back and forth. The filter media is bent to form a folded body; the outer tube is fitted around the outer edge of the folded filter media, and the surface of the outer tube is provided with multiple flow guide holes. The core tube, the folded filter media and the outer tube are provided with a top cover and a corresponding bottom cover at both ends, and the top cover is provided with a through hole connecting the opening end of the core tube; the inner tube extends upwards from the through hole of the core tube and the top cover; the positioning plate is connected to the top of the inner tube, the positioning plate has a tube hole that connects to the inner tube, and the inner edge of the tube hole is provided with a handle that avoids the center of the tube hole, while the outer edge of the positioning plate is provided with a sealing gasket.

[0006] In the aforementioned bag filter, the inner tube moves up and down along the through hole of the top cover, and the bottom end of the inner tube is provided with an outward protrusion that stops at the bottom end of the through hole. The outer edge of the positioning plate is provided with an outer ring edge with reduced thickness, and the sealing gasket is provided with an inner ring groove that fits into the outer ring edge.

[0007] In the aforementioned bag filter, the positioning disc has two corresponding, spaced-apart, parallel handles on the inner edge of the tube hole. The ends of the two handles are respectively connected to the inner edge of the tube hole, and the two handles are close to the two sides of the tube hole, while the two handles avoid the center of the tube hole.

[0008] In the aforementioned bag filter, the positioning disc has multiple handles on the inner edge of the tube hole, and each handle avoids the center of the tube hole.

[0009] In the aforementioned bag filter, the positioning disc has multiple handles connected sequentially on the inner edge of the tube hole to form a polygon. The ends of the polygon are connected to the inner edge of the tube hole, and the shape of the polygon is set to one of the following: triangle, quadrilateral, pentagon and hexagon.

[0010] Furthermore, the bag filter cartridge of the present invention includes a core tube, pleated filter material, an outer tube, an inner tube, and a positioning plate, wherein: the core tube is a hollow tube with multiple guide holes on its surface; the pleated filter material is arranged around the outer edge of the core tube, and the pleated filter material is folded back and forth in sequence to form a pleated body; the outer tube is sleeved on the outer edge of the pleated filter material, and the outer tube has multiple guide holes on its surface; a top cover and a corresponding bottom cover are provided at both ends of the core tube, the pleated filter material, and the outer tube, and the top cover has a through hole communicating with the opening end of the core tube; the inner tube extends upwards from the through hole of the core tube and the top cover; the positioning plate is connected to the top end of the inner tube, the positioning plate has a tube hole communicating with the inner tube, and the inner edge of the tube hole is provided with a handle that avoids the center of the tube hole, while the outer edge of the positioning plate is provided with a sealing gasket.

[0011] In the aforementioned bag filter, the inner tube moves up and down along the through hole of the top cover, and the bottom end of the inner tube is provided with an outward protrusion that stops at the bottom end of the through hole. The outer edge of the positioning plate is provided with an outer ring edge with reduced thickness, and the sealing gasket is provided with an inner ring groove that fits into the outer ring edge.

[0012] In the aforementioned bag filter, the positioning disc has two corresponding, spaced-apart, parallel handles on the inner edge of the tube hole. The ends of the two handles are respectively connected to the inner edge of the tube hole, and the two handles are close to the two sides of the tube hole, while the two handles avoid the center of the tube hole.

[0013] In the aforementioned bag filter, the positioning disc has multiple handles on the inner edge of the tube hole, and each handle avoids the center of the tube hole.

[0014] In the aforementioned bag filter, the positioning disc has multiple handles connected sequentially on the inner edge of the tube hole to form a polygon, and the ends of the polygon are respectively connected to the inner edge of the tube hole. The shape of the polygon is set to one of triangle, quadrilateral, pentagon and hexagon. Attached Figure Description

[0015] Figure 1 This is a front view of a traditional bag filter machine.

[0016] Figure 2 This is an exploded diagram of the main components of a traditional bag filter.

[0017] Figure 3 This is an exploded view of the casing, cover and pressure plate assembly of the bag filter according to the first embodiment of the present invention.

[0018] Figure 4 This is a perspective view of the bag filter element of the bag filter machine according to the first embodiment of the present invention.

[0019] Figure 5 This is a cross-sectional view of the bag filter element of the bag filter machine according to the first embodiment of the present invention.

[0020] Figure 6 This is a perspective view of the combination of pleated filter media and core tube in the bag filter element of the first embodiment of the present invention.

[0021] Figure 7 This is a perspective view of the positioning plate and sealing gasket combination of the bag filter element of the bag filter machine according to the first embodiment of the present invention.

[0022] Figure 8 This is an exploded perspective view of the positioning plate and the sealing gasket of the bag filter element in the first embodiment of the present invention, in the direction of the top side.

[0023] Figure 9 This is an exploded perspective view of the positioning plate and the bottom side of the sealing gasket of the bag filter element of the bag filter machine according to the first embodiment of the present invention.

[0024] Figure 10 This is a perspective view of the bag filter positioning plate of the second embodiment of the present invention.

[0025] Figure 11 This is a perspective view of the bag filter positioning plate of the third embodiment of the present invention.

[0026] Figure 12 This is a perspective view of the bag filter positioning plate of the fourth embodiment of the present invention.

[0027] Figure 13 This is a perspective view of the bag filter positioning plate of the fifth embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures

[0029] <Invention>

[0030] 1. Bag filter 52. Top cover

[0031] 11. Shell 521, Through hole

[0032] 111. Fixing ring; 53. Bottom cover

[0033] 12. Cylinder cover; 6. Inner tube

[0034] 13. Pressure plate assembly 61. Outer protrusion

[0035] 131. Movable pressure plate; 7. Positioning plate

[0036] 132, Center rod 71, Pipe hole

[0037] 133, Spring 711, Handle

[0038] 134, Nut 712, Handle

[0039] 2. Bag-type pleated filter element 713. Handle

[0040] 3. Core tube 714, Handle

[0041] 31. Flow guide hole 715. Handle

[0042] 4. Folded filter media 72. Outer ring edge

[0043] 5. Outer tube 73, sealing gasket

[0044] 51. Flow guide hole 731. Inner annular groove

[0045] <Traditional Techniques>

[0046] 9. Bag filter

[0047] 91. Shell

[0048] 911. Fixing ring

[0049] 912, Entrance

[0050] 913. Export

[0051] 92. Cylinder lid

[0052] 93. Supporting network

[0053] 94. Filter bags

[0054] 95. Pressure Plate Assembly

[0055] 951. Movable pressure plate

[0056] 952. Spring

[0057] 953, Center Rod

[0058] 954. Nut. Detailed Implementation

[0059] The technical means and effects adopted by the present invention to achieve the above objectives are described below with reference to the accompanying drawings:

[0060] First, please refer to Figures 3 to 9 As shown in the figure, the bag filter 1 of the present invention includes a cylindrical shell 11, a cylindrical cover 12, a bag-type pleated filter element 2, and a pressure plate assembly 13. The cylindrical shell 11 has an inlet and an outlet. The cylindrical cover 12 can be opened and closed on the opening of the cylindrical shell 11. The bag-type pleated filter element 2 is detachably mounted on a fixing ring 111 inside the cylindrical shell 11. The pressure plate assembly 13 is then placed downwards and fixed inside the cylindrical shell 11. The movable pressure plate 131, in conjunction with the compression force of the spring 133, presses downwards and closes the top periphery of the bag-type pleated filter element 2 and the top periphery of the fixing ring 113. The pressure plate assembly 13 is closer to the movable pressure plate 131, and the corresponding central rod 132 and nut 134 extend downwards below the movable pressure plate 131, allowing the central rod 132 and nut 134 to extend into the bag-type pleated filter element 2.

[0061] The bag-type pleated filter element 2 of the present invention includes a core tube 3, a pleated filter material 4, an outer tube 5, an inner tube 6, and a positioning disc 7, wherein:

[0062] The core tube 3 is a hollow tube, and multiple flow guide holes 31 are provided on the surface of the core tube 3.

[0063] The folded filter material 4 is arranged around the outer edge of the core tube 3, and the folded filter material 4 is folded back and forth in sequence to form a folded body.

[0064] The outer tube 5 is sleeved on the outer edge of the pleated filter material 4. Multiple flow guide holes 51 are provided on the surface of the outer tube 5. A top cover 52 and a corresponding bottom cover 53 are provided at both ends of the core tube 3, the pleated filter material 4 and the outer tube 5. The top cover 52 is provided with a through hole 521 that connects to the opening end of the core tube 3.

[0065] The inner tube 6 extends upward through the through hole 521 of the core tube 3 and the top cover 52, allowing the inner tube 6 to move up and down along the center of the core tube 3 and the through hole 521 of the top cover 52. The bottom end of the inner tube 6 is provided with an outward protrusion 61 that stops at the bottom end of the through hole 521.

[0066] The positioning disc 7 is connected and fixed to the top of the inner tube 6. The positioning disc 7 has a tube hole 71 that communicates with the inner tube 6. The inner edge of the tube hole 71 is provided with a handle 711 that avoids the center of the tube hole 71, so that the staff can easily pick up the bag-type folded filter element 2. The outer edge of the positioning disc 7 is provided with a sealing gasket 73. The outer edge of the positioning disc 7 is provided with a reduced thickness outer ring edge 72, and the sealing gasket 73 is provided with an inner ring groove 731 that fits into the outer ring edge 72.

[0067] The bag-type pleated filter element 2 of the present invention has a handle 711 on the inner edge of the tube hole 71 of the positioning plate 7, avoiding the center of the tube hole 71, so that the staff can easily pick up and put in the bag-type pleated filter element 2. The three handles 711 on the inner edge of the tube hole 71 are connected in sequence to form a triangular polygon, and the ends of each handle 711 around the polygon are respectively connected to the inner edge of the tube hole 71, so that each handle 711 avoids the central rod 132 and nut 134 of the pressure plate assembly 13, so that the pressure plate assembly 13 can reliably squeeze the positioning plate 7 and the sealing gasket 73 for airtight positioning, so that the bag-type pleated filter element 2 can filter pollutants larger than 0.001μm, thereby meeting the use requirements of precision electronic industry equipment.

[0068] Please see Figure 10 The second embodiment shown differs from the first embodiment mainly in that each of the three handles 712 is designed with a downwardly concave arc shape.

[0069] Please see Figure 11 The third embodiment shown differs from the first embodiment in that the four handles 713 on the inner edge of the tube hole 71 are connected in sequence to form a quadrangular polygon, and the ends of each handle 713 around the polygon are respectively connected to the inner edge of the tube hole 71.

[0070] Please see Figure 12 The fourth embodiment shown differs from the first embodiment in that the six handles 714 on the inner edge of the tube hole 71 are sequentially connected to form a hexagonal polygon, and the ends of each handle 714 around the polygon are respectively connected to the inner edge of the tube hole 71.

[0071] Please see Figure 13The fifth embodiment shown is different from the first embodiment in that the positioning disk 7 is provided with two corresponding and spaced-apart handles 715 on the inner edge of the tube hole 71. The ends of the two handles 715 are respectively connected to the inner edge of the tube hole 71. The two handles 715 are close to the two sides of the tube hole 71, and the two handles 715 are respectively away from the center of the tube hole 71.

[0072] The embodiments described above are only for the purpose of illustrating the present invention and are not intended to limit it. Various simple changes and modifications that can be made by those skilled in the art without departing from the spirit and scope of the present invention should still be included in the claims of the present invention.

Claims

1. A bag filter press, comprising a shell, a cover, a bag-type pleated filter element, and a pressure plate assembly, wherein the cover is detachably closed onto the opening of the shell, and the bag-type pleated filter element and the pressure plate assembly are detachably disposed within the shell, the bag-type pleated filter element comprising a core tube, pleated filter media, an outer tube, an inner tube, and a positioning plate, wherein: The core tube is a hollow tube with multiple flow guide holes on its surface; The folded filter material is arranged around the outer edge of the core tube, and the folded filter material is folded back and forth in sequence to form a folded body; The outer tube is fitted around the outer edge of the pleated filter material. Multiple flow guide holes are provided on the surface of the outer tube. A top cover and a corresponding bottom cover are provided at both ends of the core tube, the pleated filter material and the outer tube. The top cover is provided with a through hole that connects to the opening end of the core tube. The inner tube extends upwards through the hole between the core tube and the top cover; The positioning plate is connected to the top of the inner tube. The positioning plate has a tube hole that communicates with the inner tube. A handle that avoids the center of the tube hole is provided on the inner edge of the tube hole, and a sealing gasket is provided on the outer edge of the positioning plate.

2. The bag filter as described in claim 1, wherein the inner tube moves up and down along the through hole of the top cover, and the bottom end of the inner tube is provided with an outward protrusion that stops at the bottom end of the through hole, the outer edge of the positioning plate is provided with an outer ring edge with reduced thickness, and the sealing gasket is provided with an inner ring groove that fits onto the outer ring edge.

3. The bag filter as described in claim 1, wherein the positioning disc is provided with two corresponding, spaced-apart, parallel handles on the inner edge of the tube hole, the ends of the two handles are respectively connected to the inner edge of the tube hole, the two handles are close to both sides of the tube hole, and the two handles are respectively away from the center of the tube hole.

4. The bag filter as claimed in claim 1, wherein the positioning disc has multiple handles on the inner edge of the tube hole, and each handle avoids the center of the tube hole.

5. The bag filter as described in claim 4, wherein the positioning disc has a plurality of handles connected in sequence on the inner edge of the tube hole to form a polygon, and the periphery of the polygon is respectively connected to the inner edge of the tube hole, and the shape of the polygon is one of a triangle, a quadrilateral, a pentagon and a hexagon.

6. A bag filter cartridge for a bag filter press, comprising a core tube, pleated filter media, an outer tube, an inner tube, and a positioning disc, wherein: The core tube is a hollow tube with multiple flow guide holes on its surface; The folded filter material is arranged around the outer edge of the core tube, and the folded filter material is folded back and forth in sequence to form a folded body; The outer tube is fitted around the outer edge of the pleated filter material. Multiple flow guide holes are provided on the surface of the outer tube. A top cover and a corresponding bottom cover are provided at both ends of the core tube, the pleated filter material and the outer tube. The top cover is provided with a through hole that connects to the opening end of the core tube. The inner tube extends upwards through the hole between the core tube and the top cover; The positioning plate is connected to the top of the inner tube. The positioning plate has a tube hole that communicates with the inner tube. A handle that avoids the center of the tube hole is provided on the inner edge of the tube hole, and a sealing gasket is provided on the outer edge of the positioning plate.

7. The bag filter pleated filter element of the bag filter machine as described in claim 6, wherein the inner tube moves up and down along the through hole of the top cover, and the bottom end of the inner tube is provided with an outward protrusion that stops at the bottom end of the through hole, the outer edge of the positioning plate is provided with an outer ring edge with reduced thickness, and the sealing gasket is provided with an inner ring groove that fits into the outer ring edge.

8. The bag filter pleated filter element of the bag filter machine as described in claim 6, wherein the positioning plate is provided with two corresponding and spaced-apart handles on the inner edge of the tube hole, the ends of the two handles are respectively connected to the inner edge of the tube hole, the two handles are close to the two sides of the tube hole, and the two handles are respectively away from the center of the tube hole.

9. The bag filter pleated filter element of the bag filter machine as described in claim 6, wherein the positioning disc has multiple handles on the inner edge of the tube hole, and each handle avoids the center of the tube hole.

10. The bag filter pleated filter element of the bag filter machine as described in claim 9, wherein the positioning plate has a plurality of handles connected in sequence on the inner edge of the tube hole to form a polygon, and the periphery of the polygon is respectively connected to the inner edge of the tube hole, and the shape of the polygon is set to one of triangle, quadrilateral, pentagon and hexagon.

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