T-shaped filter composite folded filter element

Abstract

The utility model discloses a kind of T-shaped filter composite folding filter element, including filter element top cover and annular outer skeleton, the top of annular outer skeleton is connected with the bottom of filter element top cover, annular outer skeleton is concentrically arranged with filter element top cover, the surface of annular outer skeleton is evenly distributed with filter hole, the bottom of annular outer skeleton is provided with inclined filter surface, folding filter layer and braided metal inner skeleton are concentrically arranged in annular outer skeleton, the top of braided metal inner skeleton is welded with the bottom of filter element top cover, the bottom of braided metal inner skeleton is welded with inclined connecting ring. After being compressed in height direction by filter element top, braided metal inner skeleton can be deformed in height direction, and then reduce the error generated when installing contact between inclined connecting ring and baffle.

Description

Technical Field

[0001] This utility model relates to filter element structure, and in particular to a T-type filter composite pleated filter element. Background Technology

[0002] DC T-type filters belong to the series of coarse filters for pipelines and are also commonly used for filtering large particles of gases or other media. They are used in petrochemical production processes. T-type filters are mainly composed of a shell, filter element, fixed flange, and flange cover. The flange cover and fixed flange are fixedly connected by bolts, which ensures the sealing of the T-type pipeline filter and compresses the filter element.

[0003] In the prior art, Chinese utility model patent application number "201520044252.4" discloses a novel T-type filter, which discloses the filter element structure for the T-type filter. The middle channel of the T-type filter is used to install the filter element. The bottom of the filter element is open, and an inclined baffle is set between the left and right channels of the filter. The center of the baffle is set with a through hole corresponding to the bottom opening of the filter element. Thus, after the fluid passes through the filter element, it plays a filtering role. However, the biggest problem with the installation of the filter element is that in the prior art, the top of the filter element is usually pressed tightly. However, there is an installation error and gap between the bottom of the filter element and the baffle. Welding can solve the gap sealing problem, but the bottom of the filter element cannot be quickly connected to the inclined baffle. Utility Model Content

[0004] The purpose of this invention is to provide a T-type composite pleated filter element with the advantage of quick disassembly.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A T-type composite pleated filter element includes a filter element top cover and an annular outer skeleton. The top of the annular outer skeleton is connected to the bottom of the filter element top cover. The annular outer skeleton and the filter element top cover are concentrically arranged. Filter holes are evenly distributed on the surface of the annular outer skeleton. An inclined filter surface is provided at the bottom of the annular outer skeleton. A pleated filter layer and a woven metal inner skeleton are concentrically arranged inside the annular outer skeleton. The top of the woven metal inner skeleton is welded to the bottom of the filter element top cover. An inclined connecting ring is welded to the bottom of the woven metal inner skeleton. The inclined connecting ring corresponds to a baffle. The pleated filter layer is disposed between the annular outer skeleton and the woven metal inner skeleton. A through hole is provided at the center of the inclined connecting ring. The pleated filter layer opens outward from the center. The woven metal inner skeleton opens outward and abuts against the inner side of the pleated filter layer. A gap is formed between the inclined connecting ring and the annular outer skeleton in the height direction. A magnetic attraction device is provided at the bottom of the inclined connecting ring.

[0006] Preferably, the bottom of the filter element top cover is concentrically provided with a limiting ring and a positioning ring, and an annular groove is formed between the limiting ring and the positioning ring for the top of the annular outer skeleton to be embedded, and the bottom of the positioning ring is for the folded filter layer and the woven metal inner skeleton to abut against each other.

[0007] By adopting the above technical solution, the annular groove formed between the limiting ring and the positioning ring fixes the annular outer frame, which facilitates installation and spot welding, ensures concentricity, and facilitates adjustment.

[0008] Preferably, the cross-sectional shape of the woven metal inner skeleton is circular, the metal inner skeleton has a stacked area in the circumferential direction, and the woven metal inner skeleton has welding points at the stacked area.

[0009] By adopting the above technical solution, the internal impact resistance of the circular cross-section woven metal inner skeleton is strong, and the fixing function of the woven metal inner skeleton after opening is solved by welding points.

[0010] Preferably, the folded filter layer is connected end to end in the circumferential direction, the folded filter layer is formed by stacking metal wire mesh in the horizontal direction, and the folded filter layer has a wavy undulation in the horizontal direction.

[0011] By adopting the above technical solution, the folded filter layer connected end to end greatly increases the surface area of ​​the filter medium in a limited space, forming a space for impurities to accumulate, reducing pressure difference and improving service life.

[0012] Preferably, the spacing between the peaks and troughs of the folded filter layer is 0.5cm-1.5cm, and the thickness of the folded filter layer is 0.5mm-2mm.

[0013] By adopting the above technical solution, this range can ensure sufficient filtration area and filtration flow rate, thereby improving structural strength and filtration accuracy.

[0014] Preferably, the height of the limiting ring is greater than the height of the positioning ring, the limiting ring is integrally formed with the filter element top cover, the width of the annular groove is greater than the width of the annular outer skeleton, and the end of the annular outer skeleton is welded and fixed to the limiting ring.

[0015] By adopting the above technical solution, the fixing effect of the annular outer skeleton is improved, the welding point is avoided from being welded to the inside, and the impact resistance of the filter element is improved.

[0016] Preferably, a guide surface is provided on the inner side of the end of the limiting ring, and the guide surface is inclined inward at the end of the limiting ring.

[0017] By adopting the above technical solution, the annular outer skeleton can be easily inserted into the annular groove, which serves as a guide and avoids interference during the pre-positioning process.

[0018] Preferably, the bottom of the inclined connecting ring is provided with a placement groove, the placement groove is recessed upward from the top of the inclined connecting ring, the placement groove is along the inclined connecting ring, and the magnetic attraction device is a magnet, the magnet is placed in the placement groove.

[0019] By adopting the above technical solution, the magnetic suction device is positioned and installed to avoid outward protrusion and the formation of gaps. The inclined connecting ring and the baffle can be kept relatively flush.

[0020] Preferably, the gap is 2mm-5mm.

[0021] By adopting the above technical solution, the downward installation gap is ensured during the installation process, and the gap formed between the tilted connecting ring and the baffle is avoided.

[0022] In summary, during installation, the magnetic suction device enables quick fixing and disassembly between the inclined connecting ring at the bottom of the filter element and the baffle. At the same time, the gap formed between the woven metal inner skeleton and the annular outer skeleton and the inclined connecting ring allows the woven metal inner skeleton to deform in the height direction due to the clamping force from the top of the filter element, thereby reducing the error caused by the inclined connecting ring and the baffle during installation contact. Attached Figure Description

[0023] Figure 1 This is an exploded illustration of an embodiment. Figure 1 ;

[0024] Figure 2 This is an exploded illustration of an embodiment. Figure 2 ;

[0025] Figure 3 This is a partial cross-sectional view of an embodiment. Figure 1 ;

[0026] Figure 4 This is a partial cross-sectional view of an embodiment. Figure 2 ;

[0027] Figure 5 yes Figure 4 An enlarged schematic diagram of part A is shown below;

[0028] Figure 6 yes Figure 4 An enlarged schematic diagram of part B is shown below;

[0029] In the diagram, 1. Filter cartridge top cover; 11. Limiting ring; 12. Guide surface; 13. Positioning ring; 14. Annular groove; 2. Annular outer skeleton; 21. Filter hole; 22. Inclined filter surface; 3. Folded filter layer; 4. Braided metal inner skeleton; 41. Stacked area; 5. Inclined connecting ring; 51. Through hole; 52. Gap; 53. Placement groove; 54. Magnetic suction device. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0032] Example:

[0033] like Figures 1 to 6 As shown, a T-type filter composite pleated filter element includes a filter element top cover 1 and an annular outer frame 2. The surface of the annular outer frame 2 is evenly distributed with filter holes 21. The annular outer frame 2 is made of perforated stainless steel coil. An inclined filter surface 22 is provided at the bottom of the annular outer frame 2, corresponding to an inclined baffle inside the T-type filter. A pleated filter layer 3 and a woven metal inner frame 4 are concentrically arranged inside the annular outer frame 2. The woven metal inner frame 4 is located inside the pleated filter layer 3. An inclined metal connecting ring 5 is welded to the bottom of the woven metal inner frame 4, corresponding to the baffle. The pleated filter layer 3 is disposed between the annular outer frame 2 and the... Between the woven metal inner skeleton 4, the center of the inclined connecting ring 5 is provided with a through hole 51 that cooperates with the baffle. The folded filter layer 3 opens outward from the center, and the woven metal inner skeleton 4 opens outward and abuts against the inner side of the folded filter layer 3. The woven metal inner skeleton 4 plays the role of supporting the folded filter layer 3. A gap 52 is formed between the inclined connecting ring 5 and the annular outer skeleton 2 in the height direction. In this embodiment, after the inclined connecting ring 5 is connected to the baffle, the size of the gap 52 between the inclined connecting ring 5 and the annular outer skeleton 2 is 2mm-5mm. A magnetic attraction device 54 is provided at the bottom of the inclined connecting ring 5. The magnetic attraction device 54 is a magnet, which attracts the baffle through magnetic attraction.

[0034] like Figures 2 to 6As shown, the top of the annular outer frame 2 is connected to the bottom of the filter element top cover 1. The annular outer frame 2 and the filter element top cover 1 are concentrically arranged. Specifically, a limiting ring 11 and a positioning ring 13 are concentrically arranged at the bottom of the filter element top cover 1. An annular groove 14 is formed between the limiting ring 11 and the positioning ring 13 for the top of the annular outer frame 2 to be inserted. The width of the annular groove 14 is greater than the width of the annular outer frame 2. After the annular outer frame 2 is inserted into the annular groove 14, the end of the annular outer frame 2 is fixed to the limiting ring 11 by spot welding, thereby achieving a fixed connection between the annular outer frame 2 and the annular groove 14. At the same time, in order to facilitate the insertion of the top of the annular outer frame 2 into the annular groove 14, a guide surface 12 is provided on the inner side of the end of the limiting ring 11. The guide surface 12 is inclined inward at the end of the limiting ring 11, that is, when the top of the annular outer frame 2 is inserted into the annular groove 14, the guide surface 12 guides the end of the annular outer frame 2.

[0035] like Figure 3 As shown, the bottom of the positioning ring 13 is for the folded filter layer 3 and the woven metal inner skeleton 4 to abut against each other. At the same time, the height of the limiting ring 11 is greater than the height of the positioning ring 13. The limiting ring 11 is integrally cut with the filter element top cover 1, which ensures that the folded filter layer 3 and the woven metal inner skeleton 4 are attached to the inner side of the annular outer skeleton 2.

[0036] like Figures 1 to 6 As shown, the woven metal inner skeleton 4 is a metal mesh. Both the bottom of the woven metal inner skeleton 4 and the bottom of the folded filter layer 3 are inclined. The bottom of the woven metal inner skeleton 4 is welded and fixed to the inclined connecting ring 5, and the top of the woven metal inner skeleton 4 is welded and connected to the bottom of the filter element top cover 1. After connection, the cross-sectional shape of the woven metal inner skeleton 4 is circular. The structure of the folded filter layer 3 is connected and welded in the horizontal direction, that is, in the circumferential direction. The folded filter layer 3 is formed by stacking metal wire mesh in the horizontal direction. The folded filter layer 3 is wavy in the horizontal direction, that is, it is arranged in a W-shaped undulation. At the same time, in order to reduce the space occupied by the folded filter layer 3 in the filter element, the spacing between the peaks and troughs of the folded filter layer 3 is 0.5cm-1.5cm, and the thickness of the folded filter layer 3 is 0.5mm-2mm.

[0037] like Figure 6 As shown, the bottom of the inclined connecting ring 5 is provided with a placement groove 53. The placement groove 53 is recessed upward from the top of the inclined connecting ring 5. The placement groove 53 is along the inclined connecting ring 5. The magnetic attraction device 54 is a magnet. The magnet is fixed in the placement groove 53 by adhesive bonding and is attracted and fixed with the baffle.

[0038] Installation process:

[0039] During installation, the annular outer frame 2 is embedded in the annular groove 14, and the top of the annular outer frame 2 is welded and fixed to the limiting ring 11. Then, the folded filter layer 3 is unfolded from the center outward in the annular outer frame 2. At the same time, the folded filter layer 3 is inserted to the top and abuts against the end of the positioning ring 13. Finally, the woven metal inner frame 4 is inserted into the folded filter layer 3, so that the woven metal inner frame 4 unfolds outward under its own action and abuts against the inside of the folded filter layer 3 through tension. Then, the woven metal inner frame 4 forms a stacked area 41 in the circumferential direction. The woven metal inner frame 4 is connected at the stacked area 41 by welding points. The bottom of the woven metal inner frame 4 is welded and fixed to the inclined connecting ring 5. During the filter element installation, the inclined connecting ring 5 and the baffle are fixed by magnetic adsorption, and the gap 52 corrects the error of the filter element in the tilt direction.

Claims

1. A T-type composite pleated filter element, comprising a filter element top cover (1) and an annular outer skeleton (2), characterized in that: The top of the annular outer frame (2) is connected to the bottom of the filter element top cover (1). The annular outer frame (2) and the filter element top cover (1) are concentrically arranged. Filter holes (21) are evenly distributed on the surface of the annular outer frame (2). An inclined filter surface (22) is provided at the bottom of the annular outer frame (2). A folded filter layer (3) and a woven metal inner frame (4) are concentrically arranged inside the annular outer frame (2). The top of the woven metal inner frame (4) is welded to the bottom of the filter element top cover (1). An inclined connecting surface is welded to the bottom of the woven metal inner frame (4). The inclined connecting ring (5) corresponds to the baffle. The folded filter layer (3) is disposed between the annular outer frame (2) and the woven metal inner frame (4). The inclined connecting ring (5) has a through hole (51) in the center. The folded filter layer (3) opens outward from the center. The woven metal inner frame (4) opens outward and abuts against the inner side of the folded filter layer (3). A gap (52) is formed between the inclined connecting ring (5) and the annular outer frame (2) in the height direction. A magnetic suction device (54) is disposed at the bottom of the inclined connecting ring (5).

2. The T-type filter composite pleated filter element according to claim 1, characterized in that: The bottom of the filter element top cover (1) is concentrically provided with a limiting ring (11) and a positioning ring (13). An annular groove (14) is formed between the limiting ring (11) and the positioning ring (13) for the top of the annular outer skeleton (2) to be embedded. The bottom of the positioning ring (13) is for the folded filter layer (3) and the woven metal inner skeleton (4) to abut against each other.

3. The T-type filter composite pleated filter element according to claim 2, characterized in that: The cross-sectional shape of the woven metal inner skeleton (4) is circular. The woven metal inner skeleton (4) has a stacked area (41) in the circumferential direction. The woven metal inner skeleton (4) has welding points at the stacked area (41).

4. The T-type filter composite pleated filter element according to claim 2, characterized in that: The folded filter layer (3) is connected end to end in the circumferential direction. The folded filter layer (3) is formed by stacking metal wire mesh in the horizontal direction. The folded filter layer (3) has a wave-like undulation in the horizontal direction.

5. The T-type filter composite pleated filter element according to claim 4, characterized in that: The spacing between the peaks and troughs of the folded filter layer (3) is 0.5cm-1.5cm, and the thickness of the folded filter layer (3) is 0.5mm-2mm.

6. The T-type filter composite pleated filter element according to claim 2, characterized in that: The height of the limiting ring (11) is greater than the height of the positioning ring (13). The limiting ring (11) is integrally formed with the filter element top cover (1). The width of the annular groove (14) is greater than the width of the annular outer skeleton (2). The end of the annular outer skeleton (2) is welded and fixed to the limiting ring (11).

7. The T-type filter composite pleated filter element according to claim 6, characterized in that: A guide surface (12) is provided on the inner side of the end of the limiting ring (11), and the guide surface (12) is inclined inward at the end of the limiting ring (11).

8. The T-type filter composite pleated filter element according to claim 1, characterized in that: The bottom of the inclined connecting ring (5) is provided with a placement groove (53), the placement groove (53) is recessed upward from the top of the inclined connecting ring (5), the placement groove (53) is along the inclined connecting ring (5), the magnetic attraction device (54) is a magnet, and the magnet is placed in the placement groove (53).

9. The T-type filter composite pleated filter element according to claim 1, characterized in that: The gap (52) is 2mm-5mm.

Images