Sectional type feeding filter structure

Abstract

The utility model discloses a sectional type feeding filter structure, the sectional type is embodied in sectional type welding of the side wall of a cylinder body, and the structure needing to be welded from top to bottom comprises an arc-shaped top structure at the top, an upper connecting section structure (with an upper flange ring) positioned below the top of the arc-shaped top structure, a lower connecting section connected with the upper flange ring, and a lower connecting section positioned at the bottom of the lower connecting section, and the filtering section is welded and fixed with the bottom of the lower connecting section, and the bottom of the filtering section is sealed through an arc-shaped bottom. The problem of stress concentration of the thin-wall connecting flange is reduced, and meanwhile welding is facilitated.

Description

Technical Field

[0001] The utility model relates to a filter structure, in particular to a segmented feed filter structure. Background Art

[0002] The filter is a relatively fine filtering component that can be used to remove sediment, rust, etc. in the fluid, or colloids with smaller particle size.

[0003] In the prior art, a Chinese invention patent application numbered "201410550256.X" discloses a filter structure. In order to ensure the replacement and maintenance of the filter, the filter housings are usually connected by flanges, as shown in the above patent document or Figure 1 It is publicly known that the thin wall of the filter is usually connected to the flange by welding. However, for thin metal walls, welding at the L-shaped position of the connection is difficult, which can easily cause cold welding or over-welding, and the welding condition cannot be detected from the back of the weld. For chemical production, the sudden transition from thick to thin can easily cause stress concentration and affect the overall operating pressure. Therefore, a segmented filter structure is needed to solve the above-mentioned thin-wall flange welding problem. Utility Model Content

[0004] The utility model aims to provide a segmented feed filter structure, which reduces the stress concentration problem of thin-wall connecting flanges.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a segmented feed filter structure, comprising

[0006] The arc-shaped top includes a first accommodating cavity and a first opening, wherein the first accommodating cavity is provided in the arc-shaped top, the first opening is formed by penetrating downwardly from the first accommodating cavity, and the first opening is concentrically provided with the bottom of the arc-shaped top;

[0007] The upper connecting section includes an upper flange ring, a second accommodating cavity, a second opening, an upper extension ring and an upper annular inclined surface, wherein the second accommodating cavity is concentrically arranged in the upper extension ring and corresponds to the first accommodating cavity, the second accommodating cavity is arranged to penetrate the upper extension ring in the height direction, the top of the upper extension ring is welded and fixed to the arc-shaped top at the first opening position, the upper annular inclined surface is formed above the outer side of the upper extension ring, the upper flange ring is concentrically arranged below the outer side of the upper extension ring, the second opening is concentrically arranged at the bottom of the upper extension ring, the top thickness of the upper annular inclined surface is the same as the thickness of the arc-shaped top, and the bottom thickness of the upper annular inclined surface is greater than the thickness of the arc-shaped top;

[0008] The lower connecting section includes a lower flange ring, a third accommodating cavity, a third opening, a lower extension ring and a lower annular inclined surface, wherein the third accommodating cavity is concentrically arranged in the lower extension ring and corresponds to the second accommodating cavity, the third accommodating cavity is arranged to penetrate the lower extension ring in the height direction, the bottom of the lower extension ring is welded and fixed to the top of the filter section, the lower flange ring is arranged above the outer side of the lower extension ring, the third opening is concentrically arranged at the top of the lower extension ring and corresponds to the second opening, the lower annular inclined surface is formed below the outer side of the lower extension ring, the thickness of the bottom of the lower annular inclined surface is equal to the thickness of the filter section, and the thickness of the top of the lower annular inclined surface is greater than the thickness of the filter section;

[0009] A filter section, wherein a water outlet is provided on one side of the filter section, a water inlet is provided on the other side of the filter section, a filter element filtering structure is provided in the middle of the filter section, and a fourth accommodating chamber is provided in the filter section, the fourth accommodating chamber upwardly penetrates into the third accommodating chamber, and the fourth accommodating chamber downwardly penetrates to form a fourth opening;

[0010] The top of the arc-shaped bottom is welded and fixed to the filter section at the fourth opening position.

[0011] Preferably, the arc-shaped top, the arc-shaped bottom and the filter section have the same thickness.

[0012] By adopting the above technical solution, metal plates of the same thickness are stamped or cast.

[0013] Preferably, the bottom of the upper annular inclined surface is connected to the upper flange ring and the top is inclined inwardly, and the top of the lower annular inclined surface is connected to the lower flange ring and the bottom is inclined inwardly.

[0014] By adopting the above technical solution, the thickness changes evenly, the thicker position is formed integrally with the flange, and the thinner position is welded to the thin wall, ensuring uniform transition and avoiding stress concentration.

[0015] Preferably, the upper connecting section and the lower connecting section have the same height, which is 200-400 mm.

[0016] By adopting the above technical solution, the heights of the upper and lower flanges are consistent.

[0017] Preferably, the distance between the weld roots of the upper extension ring and the lower extension ring is 1±1 mm, and the angle between the fusion surfaces is 60°±5°.

[0018] By adopting the above technical solution, better welding effect is achieved.

[0019] Preferably, the lower extension ring is recessed downward at the third opening position to form a sealing ring groove, an elastic sealing ring is arranged in the sealing ring groove, the sealing ring groove is concentrically arranged with the lower extension ring, the sealing ring groove is extended radially inward, the lower extension ring is formed with a step ring on the outside of the sealing ring groove, a step groove is arranged between the end face of the upper extension ring and the upper flange ring, and the step ring cooperates with the step groove.

[0020] By adopting the above technical solution, the sealing effect is improved, and at the same time, the step groove and the step ring are staggered to further prevent leakage at the connection position of the upper flange ring and the lower flange ring.

[0021] Preferably, the longitudinal section of the step ring is a right-angled trapezoid, and a convex ring cooperating with the step ring is provided at the bottom of the step groove.

[0022] By adopting the above technical solution, the convex ring cooperates with the step ring, limiting the maximum downward movement distance of the step ring.

[0023] Preferably, support feet are provided on the outside of the filter section, the support feet are evenly distributed around the filter section, and a grounded conductive plate is provided on the support feet.

[0024] By adopting the above technical solution, the filter as a whole is supported, and the grounding conductive plate is prevented from avoiding static electricity during use.

[0025] Preferably, the supporting foot includes a base plate, an I-beam vertical rod, an oblique sealing plate and an arc-shaped connecting plate, the inner side of the arc-shaped connecting plate is welded to the outer side of the filter section, the oblique sealing plate is arranged on the top of the I-beam vertical rod, the side surface of the top of the I-beam vertical rod is welded to the outer side of the arc-shaped connecting plate, the base plate is connected to the bottom of the I-beam vertical rod, and the grounding conductive plate is connected to the side surface of the I-beam vertical rod.

[0026] By adopting the above technical solution, the structure has better strength.

[0027] To sum up, during the processing, the arc top is connected to the thinner section of the upper connecting section, and the upper flange ring is formed integrally with the thicker section of the upper connecting section, so that the thickness changes evenly, which reduces stress concentration to a certain extent. The thinner section of the lower connecting section is welded and fixed to the filter section, and the lower flange ring is formed integrally with the lower connecting section. The thickness changes evenly in the height direction, which reduces stress concentration. At the same time, during the processing, welding is more convenient, and whether there is over-welding or cold welding can be observed from the back of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a partial schematic diagram of the background technology;

[0029] Figure 2 It is a cross-sectional schematic diagram of an embodiment;

[0030] Figure 3 yes Figure 2 An enlarged schematic diagram of part A is shown;

[0031] Figure 4 is a cross-sectional schematic diagram of the embodiment at the connection and sealing position between the upper flange ring and the lower flange ring;

[0032] Figure 5 is a top view of an embodiment;

[0033] Figure 6 is a cross-sectional schematic diagram of the embodiment at the welding position;

[0034] In the figure, 1. arc-shaped top; 11. first accommodating chamber; 12. first opening; 2. upper connecting section; 21. upper flange ring; 22. second accommodating chamber; 23. second opening; 24. upper extension ring; 25. upper annular inclined surface; 3. lower connecting section; 31. lower flange ring; 32. third accommodating chamber; 33. third opening; 34. lower extension ring; 35. lower annular inclined surface; 4. filtering section; 41. filter element filtering structure; 42. water inlet; 43. water outlet; 44. fourth accommodating chamber; 45. fourth opening; 5. arc-shaped bottom; 61. weld root; 62. fusion surface; 71. sealing ring groove; 72. elastic sealing ring; 73. step ring; 74. step groove; 75. convex ring; 8. supporting foot; 81. grounding conductive plate; 82. bottom plate; 83. I-beam vertical rod; 84. oblique sealing plate; 85. arc-shaped connecting plate. DETAILED DESCRIPTION

[0035] The present invention will be described in further detail below with reference to the accompanying drawings.

[0036] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0037] Example:

[0038] like Figures 2 to 6 As shown, a segmented feed filter structure is shown, and its segmentation is reflected in the segmented welding of the side wall of the cylinder. The structures to be welded from top to bottom include the arc-shaped top 1 structure at the top, the upper connecting section 2 structure (with an upper flange ring 21) located below each other, the lower connecting section 3 connected to the upper flange ring 21, and the filter section 4 located at the bottom of the lower connecting section 3 and welded and fixed to the bottom of the lower connecting section 3. At the same time, the filter section 4 is sealed at the bottom by the arc-shaped bottom 5, wherein the upper connecting section 2 and the lower connecting section 3 are detachably connected by bolts between the upper flange ring 21 and the lower flange ring 31, and the two are not connected by welding.

[0039] like Figures 2 to 4 As shown, the upper part is formed by an arc-shaped top 1 and an upper connecting section 2. If stainless steel is used, the arc-shaped top 1 is stamped from a stainless steel metal sheet, or cast by cast iron, wherein the arc-shaped top 1 includes a first accommodating cavity 11 and a first opening 12. The first accommodating cavity 11 is located in the arc-shaped top 1, and the first opening 12 is located at the bottom of the arc-shaped top 1 and is formed by the first accommodating cavity 11 penetrating downward. The first opening 12 is concentrically arranged with the bottom of the arc-shaped top 1.

[0040] like Figure 2 As shown, the upper connecting section 2 includes an upper flange ring 21, a second accommodating cavity 22, a second opening 23, an upper extension ring 24 and an upper annular inclined surface 25, wherein the second accommodating cavity 22 is concentrically arranged in the upper extension ring 24 and corresponds to the first accommodating cavity 11, that is, the two are interconnected in the height direction, the second accommodating cavity 22 is arranged through the upper extension ring 24 along the height direction, the top of the extension ring is welded and fixed around the arc-shaped top 1 at the position of the first opening 12, the upper annular inclined surface 25 is formed above the outer side of the upper extension ring 24, the upper flange ring 21 is concentrically arranged below the outer side of the upper extension ring 24, that is, the upper flange ring 21 and the upper extension ring 24 are formed as one piece, the second opening 23 is concentrically arranged at the bottom of the upper extension ring 24, the top thickness of the upper annular inclined surface 25 is the same as the thickness of the arc-shaped top 1, and the thickness of the bottom of the upper annular inclined surface is greater than the thickness of the arc-shaped top 1.

[0041] like Figure 2 As shown, the lower connecting section 3 is located below the upper connecting section 2. The upper connecting section 2 and the lower connecting section 3 have the same height, and the height of the upper connecting section 2 and the lower connecting section 3 is 200-400mm. The upper part of the lower connecting section 3 is connected to the upper connecting section 2, and the lower part is welded to the filter section 4. The lower connecting section 3 includes a lower flange ring 31, a third accommodating cavity 32, a third opening 33, a lower extension ring 34 and a lower annular inclined surface 35. The third accommodating cavity 32 is concentrically arranged in the lower extension ring 34 and corresponds to the second accommodating cavity 22. The third accommodating cavity 32 penetrates along the height direction. A lower extension ring 34 is provided, the bottom of the lower extension ring 34 is welded and fixed to the top of the filter segment 4, the lower flange ring 31 is provided above the outer side of the lower extension ring 34, the third opening 33 is concentrically provided at the top of the lower extension ring 34 and corresponds to the second opening 23, a lower annular inclined surface 35 is formed below the outer side of the lower extension ring 34, the thickness of the bottom of the lower annular inclined surface 35 is equal to the thickness of the filter segment 4, and the thickness of the top of the lower annular inclined surface 35 is greater than the thickness of the filter segment 4; that is, the upper connecting segment 2 and the lower connecting segment 3 are mirror-imaged in the height direction.

[0042] like Figure 2As shown, the filter section 4 mainly plays the role of filtering the fluid. A water outlet 43 is provided on one side of the filter section 4, and a water inlet 42 is provided on the other side of the filter section 4. At the same time, a filter element filtering structure 41 is provided in the middle of the filter section 4, and a fourth accommodating chamber 44 is provided in the filter section 4. The fourth accommodating chamber 44 extends upward to the third accommodating chamber 32, and the fourth accommodating chamber 44 extends downward to form a fourth opening 45; an arc-shaped bottom 5 is welded at the bottom of the filter section 4, and the top of the arc-shaped bottom 5 is welded and fixed to the filter section 4 at the position of the fourth opening 45. At the same time, the thickness of the arc-shaped top 1, the arc-shaped bottom 5 and the filter section 4 are the same.

[0043] like Figure 2 and Figure 3 As shown, in order to ensure the uniform thickness of the welding position, the bottom of the upper annular inclined surface 25 is connected to the upper flange ring 21 and the top is tilted inward, and the top of the lower annular inclined surface 35 is connected to the lower flange ring 31 and the bottom is tilted inward; the distance between the weld roots 61 between the upper extension ring 24 and the arc top 1, the lower extension ring 34 and the filter section 4, and the filter section 4 and the arc bottom 5 is 1±1mm, and the angle between the fusion surfaces 62 is 60°±5°, avoiding problems such as cold welding and weld penetration.

[0044] like Figure 2 and Figure 4 As shown, in order to ensure the sealing effect between the upper flange ring 21 and the lower flange ring 31, the lower extension ring 34 is recessed downward at the position of the third opening 33 to form a sealing ring groove 71, and an elastic sealing ring 72 is provided in the sealing ring groove 71. The sealing ring groove 71 is concentric with the lower extension ring 34, and the sealing ring groove 71 extends radially inward. The lower extension ring 34 is formed with a step ring 73 on the outside of the sealing ring groove 71, and a step groove 74 is provided between the end face of the upper extension ring 24 and the upper flange ring 21. The step ring 73 cooperates with the step groove 74, and the longitudinal cross-section of the step ring 73 is a right-angled trapezoid. The bottom of the step groove 74 is provided with a convex ring 75 that cooperates with the step ring 73.

[0045] like Figure 5 and Figure 6 As shown, in order to support the filter, a support foot 8 is provided on the outside of the filter section 4, and the support foot 8 is evenly distributed around the filter section 4. A grounding conductive plate 81 is provided on the support foot 8, and the grounding conductive plate 81 mainly plays the role of electrostatic grounding. At the same time, the specific structure of the support foot 8 is that the support foot 8 is provided with four support feet 8 arranged around the filter section 4, and each support foot 8 includes a bottom plate 82, an I-beam vertical rod 83, an oblique sealing plate 84 and an arc-shaped connecting plate 85. The inner side of the arc-shaped connecting plate 85 is welded to the outside of the filter section 4, the oblique sealing plate 84 is provided on the top of the I-beam vertical rod 83, and the side of the top of the I-beam vertical rod 83 is welded to the outer side of the arc-shaped connecting plate 85. The bottom plate 82 is connected to the bottom of the I-beam vertical rod 83, and the grounding conductive plate 81 is connected to the side of the I-beam vertical rod 83.

[0046] Processing process:

[0047] Since it is a segmented shell structure, a segmented installation and welding method is adopted. The upper flange ring 21 and the lower flange ring 31 can be pre-processed with sealing ring grooves 71 and other sealing structures, and then the upper flange ring 21 is welded and fixed to the arc-shaped top 1; the filter element filtering structure 41 is welded after the filtering section 4 is welded to the arc-shaped bottom 5, and then the external supporting feet 8 and the water inlet and outlet interface structures are welded, and the connection position between the lower connecting section 3 and the filtering section 4 is welded at the same time; finally, the upper flange ring 21 is bolted to the lower flange ring 31 to complete the assembly of the filter.

Claims

1. A segmented feed filter structure, characterized in that: include The arc-shaped top (1) comprises a first accommodating cavity (11) and a first opening (12), wherein the first accommodating cavity (11) is arranged in the arc-shaped top (1), the first opening (12) is formed by penetrating downwardly through the first accommodating cavity (11), and the first opening (12) is arranged concentrically with the bottom of the arc-shaped top (1); The upper connecting section (2) comprises an upper flange ring (21), a second accommodating cavity (22), a second opening (23), an upper extension ring (24) and an upper annular inclined surface (25), wherein the second accommodating cavity (22) is concentrically arranged in the upper extension ring (24) and corresponds to the first accommodating cavity (11), the second accommodating cavity (22) is arranged to pass through the upper extension ring (24) in the height direction, the top of the upper extension ring (24) is welded and fixed to the arc-shaped top (1) at the position of the first opening (12), the upper annular inclined surface (25) is formed above the outer side of the upper extension ring (24), the upper flange ring (21) is concentrically arranged below the outer side of the upper extension ring (24), the second opening (23) is concentrically arranged at the bottom of the upper extension ring (24), the top thickness of the upper annular inclined surface (25) is the same as the thickness of the arc-shaped top (1), and the bottom thickness of the upper annular inclined surface is greater than the thickness of the arc-shaped top (1); The lower connecting section (3) comprises a lower flange ring (31), a third accommodating cavity (32), a third opening (33), a lower extension ring (34) and a lower annular inclined surface (35). The third accommodating cavity (32) is concentrically arranged in the lower extension ring (34) and corresponds to the second accommodating cavity (22). The third accommodating cavity (32) is arranged to pass through the lower extension ring (34) in the height direction. The bottom of the lower extension ring (34) is welded and fixed to the top of the filter section (4). The lower flange ring (31) is arranged above the outer side of the lower extension ring (34). The third opening (33) is concentrically arranged at the top of the lower extension ring (34) and corresponds to the second opening (23). The lower annular inclined surface ( 35) is formed below the outer side of the lower extension ring (34), the thickness of the bottom of the lower annular inclined surface (35) is equal to the thickness of the filter section (4), and the thickness of the top of the lower annular inclined surface (35) is greater than the thickness of the filter section (4); the filter section (4), one side of the filter section (4) is provided with a water outlet (43), the other side of the filter section (4) is provided with a water inlet (42), the middle part of the filter section (4) is provided with a filter element filtering structure (41), the filter section (4) is provided with a fourth accommodating chamber (44), the fourth accommodating chamber (44) is upwardly penetrated to the third accommodating chamber (32), and the fourth accommodating chamber (44) is downwardly penetrated to form a fourth opening (45); The arc-shaped bottom (5) has a top portion which is welded and fixed to the filter section (4) at the position of the fourth opening (45).

2. The segmented feed filter structure according to claim 1, characterized in that: The arc-shaped top (1), the arc-shaped bottom (5) and the filtering section (4) have the same thickness.

3. The segmented feed filter structure according to claim 1, characterized in that: The bottom of the upper annular inclined surface (25) is connected to the upper flange ring (21) and the top is inclined inwardly, and the top of the lower annular inclined surface (35) is connected to the lower flange ring (31) and the bottom is inclined inwardly.

4. The segmented feed filter structure according to claim 1, characterized in that: The upper connecting section (2) and the lower connecting section (3) have the same height, and the height of the upper connecting section (2) and the lower connecting section (3) is 200-400 mm.

5. The segmented feed filter structure according to claim 4, characterized in that: The distance between the weld roots (61) of the upper extension ring (24) and the lower extension ring (34) is 1±1 mm, and the angle between the fusion surfaces (62) is 60°±5°.

6. The segmented feed filter structure according to claim 1, characterized in that: The lower extension ring (34) is recessed downward at the position of the third opening (33) to form a sealing ring groove (71), an elastic sealing ring (72) is provided in the sealing ring groove (71), the sealing ring groove (71) is concentrically arranged with the lower extension ring (34), the sealing ring groove (71) is extended radially inward, a step ring (73) is formed on the outer side of the sealing ring groove (71) of the lower extension ring (34), a step groove (74) is provided between the end face of the upper extension ring (24) and the upper flange ring (21), and the step ring (73) cooperates with the step groove (74).

7. The segmented feed filter structure according to claim 6, characterized in that: The longitudinal section of the step ring (73) is in the shape of a right-angled trapezoid, and the bottom of the step groove (74) is provided with a convex ring (75) that cooperates with the step ring (73).

8. The segmented feed filter structure according to claim 1, characterized in that: Support legs (8) are provided on the outside of the filter section (4), the support legs (8) are evenly distributed around the filter section (4), and a grounding conductive plate (81) is provided on the support legs (8).

9. The segmented feed filter structure according to claim 8, characterized in that: The support leg (8) comprises a bottom plate (82), an I-steel vertical rod (83), an oblique sealing plate (84) and an arc-shaped connecting plate (85); the inner side of the arc-shaped connecting plate (85) is welded to the outer side of the filter section (4); the oblique sealing plate (84) is arranged on the top of the I-steel vertical rod (83); the side surface of the top of the I-steel vertical rod (83) is welded to the outer side of the arc-shaped connecting plate (85); the bottom plate (82) is connected to the bottom of the I-steel vertical rod (83); and the grounding conductive plate (81) is connected to the side surface of the I-steel vertical rod (83).

Images