Filter end sealing structure

Abstract

A filter end sealing structure belongs to the technical field of filter sealing. The filter end sealing structure solves the problem that an existing filter end sealing structure is poor in sealing performance. A first step face and a second step face are machined at one end of the barrel in the circumferential direction of the barrel, a third step face and a fourth step face are machined at the open end of the end cover in the circumferential direction of the end cover, and the sealing gasket comprises a first gasket and a second gasket which is coaxially, integrally and fixedly connected to the outer circle face of the first gasket. The first gasket and the second gasket are integrally and fixedly connected to form the sealing gasket structure, the section of the sealing gasket structure is T-shaped, and the end faces, in contact with the sealing gasket, of the barrel and the end cover are machined into corresponding step faces, so that the area of the sealing contact face is effectively increased, and compared with an existing linear sealing gasket, the sealing effect is better; the first gasket and the second gasket which are different in thickness are adopted to integrally form the sealing gasket, and the sealing gasket is further prevented from moving in the radial direction; and the V-shaped ring groove is formed in the inner circular surface of the first gasket, so that the sealing performance can be improved by adjusting the pressure.

Description

Technical Field

[0001] The utility model relates to a filter end sealing structure, belonging to the technical field of filter sealing. Background Art

[0002] Multi-core filters are currently a common filtration product. Their advantages are small footprint, the ability to use multiple filter elements at the same time, and large water treatment capacity. However, due to the large diameter of multi-core filters, the end cover seal only uses a conventional straight-section gasket, and the contact surface between the filter cylinder end and the gasket and the contact surface between the filter end cover and the gasket are both flat, resulting in poor sealing effect. Therefore, a filter end sealing structure with better sealing performance is urgently needed. Utility Model Content

[0003] The utility model aims to solve the problem of poor sealing performance of the existing filter end sealing structure, and further provides a filter end sealing structure.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A filter end sealing structure comprises a cylinder, a sealing gasket and an end cover which are fixedly connected in sequence by a plurality of bolts, wherein one end of the cylinder is processed with a first step surface and a second step surface along its circumference, and the first step surface and the second step surface are distributed in a stepped manner.

[0006] The open end of the end cover is processed with a third step surface and a fourth step surface along its circumference, and the third step surface and the fourth step surface are distributed in a stepped manner.

[0007] The sealing gasket comprises a first gasket and a second gasket coaxially and integrally fixed to the outer circumferential surface of the first gasket, the thickness of the second gasket is set smaller than the thickness of the first gasket, the first gasket is coaxially clamped between the first step surface and the third step surface, and the second gasket is coaxially clamped between the second step surface and the fourth step surface.

[0008] The inner circumferential surface of the first gasket is processed with a V-shaped annular groove along its circumference.

[0009] Furthermore, the V-shaped corner position of the V-shaped annular groove is arranged with an arc transition.

[0010] Furthermore, the first to fourth step surfaces are all processed with annular ridges along the circumferential direction.

[0011] Furthermore, the open end of the end cover is integrally processed with an annular brim along its circumference, and the annular brim is arranged perpendicular to the end cover.

[0012] Furthermore, a limiting ridge is processed on the third step surface, and the first gasket is arranged on a side of the limiting ridge away from the central axis.

[0013] Further, a vertical distance between the first step surface and the second step surface and a vertical distance between the third step surface and the fourth step surface are set to be the same.

[0014] Further, the distance between the first step surface and the first gasket and the distance between the third step surface and the first gasket are set to be the same, and the distance between the second step surface and the second gasket and the distance between the fourth step surface and the second gasket are set to be the same.

[0015] Furthermore, a handle is reserved on the end cover.

[0016] Furthermore, an exhaust hole is provided on the end cover.

[0017] Furthermore, a plurality of first mounting holes are formed on the cylinder body, a plurality of second mounting holes are formed on the gasket, a plurality of third mounting holes are formed on the end cover, and the first to third mounting holes are arranged in one-to-one correspondence.

[0018] Compared with the prior art, the utility model has the following effects:

[0019] The sealing gasket structure formed by the first gasket and the second gasket being fixedly connected in one piece has a T-shaped cross section, and the end faces of the cylinder and the end cover that are in contact with the sealing gasket are processed with corresponding step surfaces, which effectively increases the area of ​​the sealing contact surface. Compared with the existing straight-line sealing gasket, the sealing effect is better. At the same time, the first gasket and the second gasket with different thicknesses are used to form the sealing gasket in one piece, which further prevents the sealing gasket from moving in the radial direction.

[0020] By machining a V-shaped ring groove on the inner circumferential surface of the first gasket, the sealing performance can be increased by adjusting the pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of the filter end sealing structure of the utility model;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0023] Figure 3 It is a cross-sectional schematic diagram of the cylinder end structure;

[0024] Figure 4 for Figure 3 An enlarged schematic diagram of point B;

[0025] Figure 5 is a cross-sectional schematic diagram of a sealing gasket;

[0026] Figure 6 for Figure 5 An enlarged schematic diagram of point C;

[0027] Figure 7is a cross-sectional schematic diagram of the end cover;

[0028] Figure 8 It is a schematic diagram of the structure of the end cover.

[0029] In the figure:

[0030] 1. Cylinder body; 1-1. First step surface; 1-2. Second step surface; 2. Sealing gasket; 2-1. First gasket; 2-2. Second gasket; 2-3. V-shaped ring groove; 3. End cover; 3-1. Third step surface; 3-2. Fourth step surface; 4. Annular ridge; 5. Annular cap brim; 6. Limiting ridge. DETAILED DESCRIPTION

[0031] Specific implementation method 1: Combination Figures 1 to 8 This embodiment is explained, and the technical scheme in the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] It should be noted that the descriptions of the present invention regarding directions such as "front", "back", "left", "right", "inside", "outside", "left side", "right side", "upper", "lower", "top", "bottom", etc. are all defined based on the relationship between the orientations or positions shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure described must be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] A filter end sealing structure comprises a cylinder 1, a sealing gasket 2 and an end cover 3 which are fixedly connected in sequence by a plurality of bolts, wherein one end of the cylinder 1 is processed with a first step surface 1-1 and a second step surface 1-2 along its circumference, and the first step surface 1-1 and the second step surface 1-2 are distributed in a stepped manner.

[0035] The open end of the end cover 3 is processed with a third step surface 3-1 and a fourth step surface 3-2 along its circumference, and the third step surface 3-1 and the fourth step surface 3-2 are distributed in a stepped manner.

[0036] The sealing gasket 2 includes a first gasket 2-1 and a second gasket 2-2 which is coaxial and integrally fixed to the outer circumferential surface of the first gasket 2-1. The thickness of the second gasket 2-2 is smaller than the thickness of the first gasket 2-1. The first gasket 2-1 is coaxially sandwiched between the first step surface 1-1 and the third step surface 3-1. The second gasket 2-2 is coaxially sandwiched between the second step surface 1-2 and the fourth step surface 3-2.

[0037] The inner circumferential surface of the first gasket 2-1 is processed with a V-shaped annular groove 2-3 along its circumference.

[0038] The first step surface 1 - 1 and the second step surface 1 - 2 are both annular structures.

[0039] The sealing gasket 2 structure formed by the first gasket 2-1 and the second gasket 2-2 being fixedly connected as a whole has a T-shaped cross section, and the end surfaces of the cylinder 1 and the end cover 3 that are in contact with the sealing gasket 2 are processed with corresponding step surfaces, which effectively increases the area of ​​the sealing contact surface. Compared with the existing straight-line sealing gasket 2, the sealing effect is better. At the same time, the first gasket 2-1 and the second gasket 2-2 with different thicknesses are used to form the sealing gasket 2 as a whole, which further prevents the sealing gasket 2 from moving in the radial direction;

[0040] By machining a V-shaped annular groove 2-3 on the inner circumferential surface of the first gasket 2-1, the sealing performance can be increased by adjusting the pressure.

[0041] The V-shaped corner position of the V-shaped ring groove 2-3 is set with an arc transition.

[0042] The first to fourth step surfaces are all processed with annular ridges 4 along the circumferential direction. With such a design, when the sealing gasket 2 is clamped between the end cover 3 and the cylinder 1 by bolts, the annular ridges 4 on each step surface can further prevent the sealing gasket 2 from moving radially, so as to further tighten the sealing gasket 2.

[0043] The open end of the end cover 3 is integrally processed with an annular brim 5 along its circumference, and the annular brim 5 is arranged perpendicular to the end cover 3. With such a design, the radial movement of the sealing gasket 2 is further limited by the annular brim 5.

[0044] The third step surface 3-1 is also processed with a limiting ridge 6, and the first gasket 2-1 is arranged on the side of the limiting ridge 6 away from the central axis. In this design, the limiting ridge can further prevent the sealing gasket from radial displacement. The limiting ridge can be an annular structure arranged along the circumference of the third step surface, or a plurality of convex structures arranged along the circumference of the third step surface.

[0045] The vertical distance between the first step surface 1-1 and the second step surface 1-2 and the vertical distance between the third step surface 3-1 and the fourth step surface 3-2 are set to be the same.

[0046] The distance between the first step surface 1-1 and the first gasket 2-1 and the distance between the third step surface 3-1 and the first gasket 2-1 are set to be the same, and the distance between the second step surface 1-2 and the second gasket 2-2 and the distance between the fourth step surface 3-2 and the second gasket 2-2 are set to be the same. Such a design further ensures the sealing between the sealing gasket 2 of the cylinder 1 and between the end cover 3 and the sealing gasket 2.

[0047] A handle is reserved on the end cover 3. Such a design facilitates the installation and removal of the end cover 3.

[0048] An exhaust hole is provided on the end cover 3. With such a design, the filter is exhausted when exhaust is needed, and the exhaust hole is blocked after exhaust is completed.

[0049] The cylinder 1 is provided with a plurality of first mounting holes, the gasket is provided with a plurality of second mounting holes, and the end cover 3 is provided with a plurality of third mounting holes, and the first to third mounting holes are arranged one by one. In this design, a plurality of bolts pass through the first to third mounting holes to fix the cylinder 1, the sealing gasket 2 and the end cover 3.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filter end sealing structure, characterized in that: The invention comprises a cylinder (1), a sealing gasket (2) and an end cover (3) which are fixedly connected in sequence by a plurality of bolts, wherein one end of the cylinder (1) is processed with a first step surface (1-1) and a second step surface (1-2) along its circumference, and the first step surface (1-1) and the second step surface (1-2) are distributed in a stepped manner. The open end of the end cover (3) is processed with a third step surface (3-1) and a fourth step surface (3-2) along its circumference, and the third step surface (3-1) and the fourth step surface (3-2) are distributed in a stepped manner. The sealing gasket (2) comprises a first gasket (2-1) and a second gasket (2-2) coaxially and integrally fixed to the outer circumferential surface of the first gasket (2-1); the thickness of the second gasket (2-2) is smaller than the thickness of the first gasket (2-1); the first gasket (2-1) is coaxially sandwiched between the first step surface (1-1) and the third step surface (3-1); the second gasket (2-2) is coaxially sandwiched between the second step surface (1-2) and the fourth step surface (3-2); The inner circular surface of the first gasket (2-1) is processed with a V-shaped annular groove (2-3) along its circumference.

2. A filter end sealing structure according to claim 1, characterized in that: The V-shaped corner position of the V-shaped annular groove (2-3) is arranged with an arc transition.

3. A filter end sealing structure according to claim 1, characterized in that: The first to fourth step surfaces are all processed with annular convex ridges (4) along the circumferential direction.

4. A filter end sealing structure according to claim 1, characterized in that: The open end of the end cover (3) is integrally processed with an annular brim (5) along its circumference, and the annular brim (5) is arranged perpendicular to the end cover (3).

5. A filter end sealing structure according to claim 1, characterized in that: A limiting ridge (6) is also processed on the third step surface (3-1), and the first gasket (2-1) is arranged on a side of the limiting ridge (6) away from the central axis.

6. A filter end sealing structure according to claim 1, characterized in that: The vertical distance between the first step surface (1-1) and the second step surface (1-2) and the vertical distance between the third step surface (3-1) and the fourth step surface (3-2) are set to be the same.

7. A filter end sealing structure according to claim 6, characterized in that: The distance between the first step surface (1-1) and the first gasket (2-1) and the distance between the third step surface (3-1) and the first gasket (2-1) are set to be the same, and the distance between the second step surface (1-2) and the second gasket (2-2) and the distance between the fourth step surface (3-2) and the second gasket (2-2) are set to be the same.

8. A filter end sealing structure according to claim 1, characterized in that: A handle is reserved on the end cover (3).

9. A filter end sealing structure according to claim 1, characterized in that: An exhaust hole is provided on the end cover (3).

10. A filter end sealing structure according to claim 3, characterized in that: A plurality of first mounting holes are formed on the cylinder (1), a plurality of second mounting holes are formed on the gasket, a plurality of third mounting holes are formed on the end cover (3), and the first to third mounting holes are arranged in a one-to-one correspondence.

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