Waterproof sealing ring and filter element applying same

Abstract

The utility model discloses a waterproof sealing ring and discloses a filter element with the waterproof sealing ring, the waterproof sealing ring comprises an annular ring body, the ring body is provided with three layers of water sealing parts which are sequentially arranged along the radial direction, each water sealing part extends along the circumferential direction of the ring body, and the two sides of the water sealing parts in the thickness direction of the ring body symmetrically extend to form skirt edges; the higher the water pressure in the filter cartridge is, the best waterproof performance of the water sealing part on the innermost layer is; when the filter cover is slightly loosened relative to the filter cartridge, the waterproof part positioned in the middle layer plays a role in sealing water for two layers; and the water sealing part on the outermost side prevents water from seeping into the filter cartridge from the outside.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element sealing, in particular to a waterproof sealing ring and a filter element using the same. Background Art

[0002] A sealing ring is typically installed at the junction of the filter cartridge and filter cover on a filter element. To improve sealing performance, a lip is often added to one side of the sealing ring, leveraging the deformation of the lip to create a watertight seal. However, installing the sealing ring upside down during assembly can easily lead to seal failure, impacting product quality. Furthermore, if the filter cover becomes loose relative to the filter cartridge during use, the sealing ring's sealing effect will be directly compromised. Utility Model Content

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a waterproof sealing ring.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The utility model also provides a filter element with the waterproof sealing ring.

[0006] According to the first aspect of the present invention, the waterproof sealing ring includes an annular ring body, on which three layers of water-sealing parts are arranged in sequence along the radial direction. Each of the water-sealing parts extends along the circumference of the ring body, and the water-sealing parts extend skirt edges symmetrically on both sides of the ring body in the thickness direction.

[0007] The waterproof sealing ring according to the embodiment of the present invention has at least the following beneficial effects: the greater the water pressure inside the filter cartridge, the better the waterproof performance of the innermost water sealing part; when the filter cover is slightly loose relative to the filter cartridge, the waterproof part located in the middle layer plays the role of a second layer of water sealing; the water sealing part located on the outermost side prevents water from seeping into the filter cartridge from the outside.

[0008] According to some embodiments of the present invention, the three layers of water-sealing parts are respectively the first water-sealing part, the second water-sealing part and the third water-sealing part from the inside to the outside along the radial direction of the ring body, the skirt of the first water-sealing part is the first skirt, the skirt of the second water-sealing part is the second skirt, and the skirt of the third water-sealing part is the third skirt. The extension height of each skirt in the axial direction of the ring body, the extension height of the second skirt is greater than the extension height of the first skirt and the third skirt.

[0009] According to some embodiments of the present invention, the first skirt edge and the third skirt edge have the same extension height.

[0010] According to some embodiments of the present invention, along the radial direction of the ring body, the first water sealing part and the second water sealing part are arranged at intervals.

[0011] According to some embodiments of the present invention, along the radial direction of the ring body, the second water sealing part and the third water sealing part are arranged closely together.

[0012] According to some embodiments of the present invention, the cross-section of each skirt in the axial direction of the ring body is triangular.

[0013] According to some embodiments of the present invention, the triangle is a right triangle, the side of the triangle close to the central axis of the ring body is a right angle side, and the side of the triangle away from the central axis of the ring body is a hypotenuse.

[0014] According to some embodiments of the present invention, the angle of the beveled edge toward the central axis of the ring body in the radial direction of the ring body is the largest at the beveled edge corresponding to the first skirt edge, the second largest at the beveled edge corresponding to the third skirt edge, and the smallest at the beveled edge corresponding to the second skirt edge.

[0015] According to some embodiments of the present invention, the right-angled side of the first skirt is flush with the inner ring wall of the ring body, and the oblique side of the third skirt extends obliquely from the outer ring wall of the ring body.

[0016] According to the filter element of the second embodiment of the present invention, a waterproof sealing ring is applied.

[0017] The filter element according to the embodiment of the present invention has at least the following beneficial effects: the three-layer water sealing portion of the waterproof sealing ring is highly effective in water sealing, thereby ensuring the water sealing effect at the connection between the filter cover and the filter cartridge.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a structural diagram of a waterproof sealing ring;

[0021] Figure 2 yes Figure 1 sectional view of ;

[0022] Figure 3 yes Figure 1 sectional view of ;

[0023] Figure 4 It is a schematic diagram of the structure of the filter element;

[0024] Figure 5 It is a schematic diagram of the internal structure of the filter element.

[0025] Figure numerals: ring body 100; water sealing part 200; first water sealing part 201; second water sealing part 202; third water sealing part 203; skirt 210; first skirt 211; second skirt 212; third skirt 213; right-angled edge 221; hypotenuse 222; filter cartridge 310; open end 311; filter cover 320; mounting groove 321. DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The utility model relates to a waterproof sealing ring, which comprises a ring body 100 and a skirt edge 210.

[0028] like Figure 1 and Figure 2 As shown, the ring body 100 is a hollow annular structure, preferably in a circular shape. Three layers of water sealing parts 200 are provided on the ring body 100, and the three layers of water sealing parts 200 are distributed in sequence from the inside to the outside along the radial direction of the ring body 100. The water sealing part 200 is integrally formed on the ring body 100. Each water sealing part 200 extends along the circumference of the ring body 100. Each water sealing part 200 extends a skirt 210 symmetrically on both sides of the thickness direction of the ring body 100. In the direction shown in the figure, the axial direction of the ring body 100 is upward and downward, and the radial direction of the ring body 100 is horizontal. Skirts 210 are extended from the upper and lower sides of each water sealing part 200, and the skirts 210 on the upper and lower sides of the same water sealing part 200 are symmetrically arranged. In actual use, as Figure 3 and Figure 4As shown, a waterproof sealing ring is applied to a filter element. The filter element also includes a filter cartridge 310 and a filter cover 320. A mounting groove 321 is provided within the filter cover 320, the shape of which matches the shape of the ring body 100. At least one end of the filter cartridge 310 is open, and the filter cover 320 is threadedly connected to the open end 311 of the filter cartridge 310. The waterproof sealing ring is placed in the mounting groove 321. Because the waterproof sealing ring is symmetrical on both sides in the axial direction, the waterproof sealing ring does not have to be installed upside down relative to the mounting groove 321. After the filter cover 320 is screwed onto the filter cartridge 310, the skirt 210 on one side of each water sealing portion 200 abuts against the groove wall of the mounting groove 321, and the skirt 210 on the other side abuts against the edge of the open end 311 of the filter cartridge 310. The waterproof sealing ring is clamped between the filter cartridge 310 and the filter cover 320, and each skirt 210 is squeezed and undergoes a certain degree of elastic deformation. The skirts 210 on both sides are used to achieve double-sided sealing of the ring body 100. The three-layer water-sealing part 200, that is, each side has three skirts 210, which bear pressure at three points with the edge of the groove wall / open end 311 of the installation groove 321 to achieve efficient water sealing. The radially innermost water-sealing part 200 is closest to the inside of the filter cartridge 310. The greater the water pressure inside the filter cartridge 310, the better the waterproof performance of the innermost water-sealing part 200. When the filter cover 320 is slightly loose relative to the filter cartridge 310, the waterproof part located in the middle layer plays the role of a second layer of water sealing. The water-sealing part 200 located on the outermost side prevents water from seeping into the filter cartridge 310 from the outside, thereby achieving efficient water sealing of the three-layer water-sealing part 200, and further ensuring the water-sealing effect at the connection between the filter cover 320 and the filter cartridge 310.

[0029] In some specific embodiments of the present invention, Figure 2As shown, the three-layer water-sealing portion 200 is defined as the first water-sealing portion 201, the second water-sealing portion 202, and the third water-sealing portion 203 from the inside to the outside according to its radial distribution position in the ring body 100. That is, the first water-sealing portion 201 is located at the innermost side of the ring body 100, the third water-sealing portion 203 is located at the outermost side of the ring body 100, and the second water-sealing portion 202 is located between the first water-sealing portion 201 and the third water-sealing portion 203. Correspondingly, the skirt 210 of the first water-sealing portion 201 is defined as the first skirt 211, the skirt 210 of the second water-sealing portion 202 is defined as the second skirt 212, and the skirt 210 of the third water-sealing portion 203 is defined as the third skirt 213. The extension heights of each skirt 210 in the axial direction of the ring body 100 can be set to be the same or different. In this embodiment, the extension height of the second skirt 212 is greater than the extension heights of the first skirt 211 and the third skirt 213. When there is a certain degree of looseness between the filter cover 320 and the filter cartridge 310, resulting in a decrease in the water sealing effect of the first skirt 211, due to the large extension height of the second skirt 212, the second skirt 212 can still abut against the installation groove 321 and the open end 311 of the filter cartridge 310, thereby still ensuring the water sealing performance of the waterproof sealing ring between the filter cover 320 and the filter cartridge 310 to prevent water leakage. Furthermore, the extension heights of the first skirt 211 and the third skirt 213 can be set to different. In this embodiment, the extension heights of the first skirt 211 and the third skirt 213 can be set to be equal.

[0030] Among them, such as Figure 2 As shown, along the radial direction of the ring body 100, the first water sealing portion 201 and the second water sealing portion 202 are spaced apart. That is, there is a certain spacing between the first skirt 211 and the second skirt 212. This spacing can increase the elastic deformation capacity of the corresponding position of the ring body 100 in the radial direction and the axial direction, thereby enabling the ring body 100 to adapt to the installation groove 321 with a certain dimensional error.

[0031] In some specific embodiments of the present invention, Figure 2 As shown, along the radial direction of the ring body 100, the second water sealing portion 202 and the third water sealing portion 203 are arranged closely together. That is, the second skirt edge 212 and the third skirt edge 213 are arranged closely together, so that the corresponding portions of the ring body 100 have sufficient structural strength in the axial and radial directions, maintaining the overall ring shape of the ring body 100 after installation, and preventing the ring body 100 from being excessively deformed during installation, which may cause failure at the second skirt edge 212 and the third skirt edge 213.

[0032] Each skirt 210 can be shaped like a trapezoid, an arc, or the like. In this embodiment, each skirt 210 has a triangular cross-section along the axial direction of the ring body 100. The end of the triangle of the skirt 210 that faces away from the ring body 100 is a pointed end, which abuts against the opening 311 of the mounting groove 321 / filter cartridge 310. This pointy end experiences significant elastic deformation when subjected to pressure, and the side of the triangle closer to the ring body 100 serves as support.

[0033] Specifically, the triangular shape is a right triangle. Figure 3 As shown, the side of the triangle shape closer to the central axis of the ring body 100 is a right-angled side 221, and the side of the triangle shape farther from the central axis of the ring body 100 is a hypotenuse 222. When the skirt 210 is not squeezed, the right-angled side 221 is parallel to the axis of the ring body 100. The water pressure in the filter cartridge 310 acts on the side of the skirt 210 where the right-angled side 221 is located. The hypotenuse 222 acts as a support for the right-angled side 221, reducing the amount of deformation of the skirt 210 in the radial direction of the ring body 100 and ensuring watertightness.

[0034] Among them, Figure 3 As shown, the angle formed by the beveled edge 222 in the radial direction of the ring body 100 is oriented toward the central axis of the ring body 100. The angle A of the beveled edge 222 corresponding to the first skirt 211 is the largest, the angle B of the beveled edge 222 corresponding to the third skirt 213 is the second largest, and the angle C of the beveled edge 222 corresponding to the second skirt 212 is the smallest. In other words, the angles A > B > C of the beveled edge 222 of each skirt 210 are greater. A larger angle corresponds to a smaller width of the corresponding skirt 210 in the radial direction of the ring body 100, resulting in lower structural strength and greater deformation under compression. The structural strength of the second skirt 212 ensures the waterproof performance of the waterproof sealing ring and the sealing performance when the filter cover 320 becomes loose relative to the filter cartridge 310. The right-angled edge 221 of the first skirt 211 is flush with the inner wall of the ring body 100. The water pressure within the filter cartridge 310 acts directly on the right-angled edge 221 of the first skirt 211 and on the inner wall of the ring body 100. The oblique edge 222 of the third skirt 213 extends obliquely from the outer wall of the ring body 100 , reducing the space for water to seep into the mounting groove 321 from the outside of the filter cartridge 310 and directly blocking it with the third skirt.

[0035] Throughout this specification, references to "some specific embodiments" and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A waterproof sealing ring, characterized by: The invention comprises a ring body (100) in an annular shape, wherein the ring body (100) is provided with three layers of water sealing parts (200) arranged in sequence along the radial direction, each of the water sealing parts (200) extends along the circumference of the ring body (100), and the water sealing parts (200) extend skirt edges (210) symmetrically on both sides of the thickness direction of the ring body (100); the three layers of the water sealing parts (200) are respectively a first water sealing part (201), a second water sealing part (202) and a third water sealing part (203) along the radial direction of the ring body (100) from the inside to the outside, the skirt edge (210) of the first water sealing part (201) is a first skirt edge (211), the skirt edge (210) of the second water sealing part (202) is a first skirt edge (211), and the skirt edge (2110) of the second water sealing part (202) is a first skirt edge (2111). 0) is a second skirt edge (212), the skirt edge (210) of the third water sealing portion (203) is a third skirt edge (213), the extension height of each skirt edge (210) in the axial direction of the ring body (100), the extension height of the second skirt edge (212) is greater than the extension heights of the first skirt edge (211) and the third skirt edge (213); the cross section of each skirt edge (210) in the axial direction of the ring body (100) is triangular, the triangular shape is a right triangle, the side of the triangular shape close to the central axis of the ring body (100) is a right-angled side (221), and the side of the triangular shape away from the central axis of the ring body (100) is a hypotenuse (222).

2. The waterproof sealing ring according to claim 1, characterized in that: The first skirt edge (211) and the third skirt edge (213) have the same extension height.

3. The waterproof sealing ring according to claim 1, characterized in that: Along the radial direction of the ring body (100), the first water sealing portion (201) and the second water sealing portion (202) are arranged at intervals.

4. The waterproof sealing ring according to claim 1 or 3, characterized in that: Along the radial direction of the ring body (100), the second water sealing part (202) and the third water sealing part (203) are arranged closely together.

5. The waterproof sealing ring according to claim 1, characterized in that: The angle of the bevel (222) in the radial direction of the ring body (100) toward the central axis of the ring body (100) is the largest at the bevel (222) corresponding to the first skirt edge (211), the second largest at the bevel (222) corresponding to the third skirt edge (213), and the smallest at the bevel (222) corresponding to the second skirt edge (212).

6. The waterproof sealing ring according to claim 1, characterized in that: The right-angled side (221) of the first skirt (211) is flush with the inner ring wall of the ring body (100), and the oblique side (222) of the third skirt (213) extends obliquely from the outer ring wall of the ring body (100).

7. A filter element, characterized in that: The waterproof sealing ring according to any one of claims 1 to 6 is used.

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