Double-lip-shaped sealing element for sleeve type connection

Abstract

The utility model provides a double-lip-shaped sealing element for sleeve type connection, which comprises a body extending along the length direction of the sealing element; one side face of the body is a matching plane, a groove is formed in the matching plane, and the groove extends in the length direction of the sealing element; the body is sequentially provided with a first slope part, a first lip-shaped part, a second lip-shaped part and a second slope part from one side of the matching plane, and the second slope part is connected with the other side of the matching plane; the size of the first lip-shaped part is smaller than that of the second lip-shaped part; the first slope portion is the front side face of the sealing piece, the second slope portion is the rear side face of the sealing piece, and the first slope portion and the second slope portion are oppositely inclined and close to each other. When the sealing element is used, the conditions of displacement, torsion, rolling and the like are not prone to occurring, the compression deformation capacity is high, the supporting performance is good after compression, and the sealing effect is stable; meanwhile, the sealing piece is integrally formed, simple in structure, narrow in width, small in size and low in production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field related to sealing, and in particular relates to a double-lip sealing component for sleeve type connection. Background Art

[0002] Sealing strips / rings are commonly used components for sealing connections between pipes, preventing leakage, and achieving quick installation. When it comes to the sealing installation of plug-in or socket parts, sealing strips / rings are often set between the sleeve and the pipe to achieve sealing. Existing sealing strips / rings often shift due to the relative movement between the pipe and the sleeve during installation and use, and even twist and roll, which can easily cause sealing failure, installation difficulties and other problems, affecting the sealing effect. Currently, most improved sealing strips / rings ensure the sealing effect by increasing the thickness or width, and solve the problem of sealing failure such as twisting, but there are problems such as complex structure, large material consumption, and high cost. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the utility model provides a double-lip seal for a sleeve-type connection, which is not prone to displacement, twisting and rolling when in use, has strong compression deformation ability and good support after compression, and has a stable sealing effect; at the same time, the seal has a simple structure, narrow width, small size, and low production cost.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A double-lip seal for a sleeve type connection, comprising:

[0006] a body extending along the length direction of the seal;

[0007] One side surface of the body is a matching plane, and a groove is provided on the matching plane, and the groove extends along the length direction of the sealing member;

[0008] The main body is provided with a first slope portion, a first lip portion, a second lip portion, and a second slope portion in sequence starting from one side of the matching plane, and the second slope portion is connected to the other side of the matching plane;

[0009] The size of the first lip portion is smaller than that of the second lip portion; the first slope portion is the front side of the seal, the second slope portion is the rear side of the seal, and the first slope portion and the second slope portion are inclined toward each other and close to each other.

[0010] In an embodiment of the present application, a through hole is provided in the second lip portion, and the through hole extends along the length direction of the second lip portion.

[0011] In one embodiment of the present application, two grooves are provided on the matching plane, and the two grooves are arranged in parallel.

[0012] In one embodiment of the present application, the cross-section of the groove is a trapezoidal structure, the parallel long sides of the trapezoidal structure are the bottom of the groove, and the parallel short sides are openings.

[0013] In one embodiment of the present application, the height of the first lip-shaped portion is equal to the height of the second lip-shaped portion, and the width of the first lip-shaped portion is smaller than the width of the second lip-shaped portion;

[0014] A first slope portion is provided on one side of the first lip portion close to the first slope portion, and an inclination angle of the first slope portion is greater than an inclination angle of the first slope portion;

[0015] The side of the first lip-shaped portion facing the second lip-shaped portion is a concave arc surface;

[0016] The side of the second lip portion facing the first lip portion is a third inclined portion, and the side facing the rear side of the seal is a fourth inclined portion. The width and inclination angle of the third inclined portion are equal to those of the fourth inclined portion.

[0017] In one embodiment of the present application, the curvature of the concave curved surface is in the range of 45° to 90°.

[0018] In one embodiment of the present application, the height of the first lip portion is less than the height of the second lip portion;

[0019] A first slope portion is provided on one side of the first lip portion close to the first slope portion, and an inclination angle of the first slope portion is greater than an inclination angle of the first slope portion;

[0020] The side of the first lip-shaped portion facing the second lip-shaped portion is a second inclined portion, and the second inclined portion is inclined in the opposite direction to the first inclined portion;

[0021] The side of the second lip portion facing the first lip portion is a third inclined portion, and the side facing the rear side of the seal is a fourth inclined portion. The inclination directions of the third inclined portion and the fourth inclined portion are opposite, and the inclination angle of the third inclined portion is greater than the inclination angle of the fourth inclined portion.

[0022] In one embodiment of the present application, the inclination angles of the second inclined surface portion and the fourth inclined surface portion are both in the range of 93° to 110°.

[0023] In one embodiment of the present application, the first lip portion and the second lip portion are connected via a transition plane.

[0024] In one embodiment of the present application, when the seal is used for sealing connection between a pipe and a sleeve, the front side of the seal is arranged toward the direction of the plug-in or sleeve receiving force extrusion.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The double-lip seal for sleeve-type connection of the present application can effectively prevent the seal from shifting during use by setting a matching plane and a groove; a first lip portion and a second lip portion of different sizes are matched with each other, and the first lip portion with a smaller size is arranged close to the first slope portion, so that the seal has good deformation and support maintenance capabilities, and the sealing effect is stable; the first slope portion and the second slope portion are inclined and close to each other, so that the cross-section of the seal has a trapezoidal structure, which has better characteristics of maintaining the stability of the overall shape when squeezed, and has the effect of preventing displacement; in addition, the seal has a simple structure, a narrow width, a small volume, and a low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the cross-sectional structure of the double-lip seal for sleeve-type connection in Example 2 of the present application.

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the double-lip seal for sleeve-type connection in Example 2 of the present application.

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the double-lip seal for sleeve-type connection in Example 3 of the present application.

[0031] Figure 4 This is a schematic diagram of the three-dimensional structure of the double-lip seal for sleeve-type connection in Example 3 of the present application.

[0032] Figure 5 This is a schematic diagram of the cross-sectional structure of the double-lip seal for sleeve-type connection during compression deformation in Example 3 of the present application.

[0033] Figure 6 This is a schematic diagram of the structure of the double-lip seal for sleeve-type connection in Example 3 of the present application when used for sealing connection between the sleeve and the pipe.

[0034] Reference numerals:

[0035] 1. Matching plane; 11. Groove;

[0036] 2. The first slope surface;

[0037] 3. first lip-shaped portion; 31. first inclined portion; 32. inner concave arc surface; 33. second inclined portion;

[0038] 4. second lip-shaped portion; 41. through hole; 42. third inclined portion; 43. fourth inclined portion;

[0039] 5. The second slope surface;

[0040] 6. Transition plane;

[0041] 7. Sleeve; 71. Pipe. DETAILED DESCRIPTION

[0042] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0043] In the description of the present invention, it should be understood that the terms "lateral", "length", "width", "thickness", "up", "down", "front", "rear", "top", "bottom", "inside", "outside", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the product of the present invention is used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] The terms "installed", "connected", "connected", "fixed" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0047] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings. Example

[0048] like Figures 1 to 6 As shown, an embodiment of the utility model provides a double-lip seal for sleeve type connection, which can be applied to the sealing connection of pipes and sleeves, etc.

[0049] The double-lip seal for sleeve type connection comprises a body, wherein the body extends along the length direction of the seal.

[0050] One side surface of the body is a matching plane 1 , on which a groove 11 recessed into the body is provided. The groove 11 extends along the length direction of the seal, and the matching plane 1 is divided into a plurality of areas by the groove 11 .

[0051] The main body starts from one side of the mating plane 1 and is provided with a first slope portion 2, a first lip portion 3, a second lip portion 4 and a second slope portion 5 in sequence along the circumference of the main body. The second slope portion 5 is connected to the other side of the mating surface.

[0052] The size of the first lip-shaped portion 3 is smaller than that of the second lip-shaped portion 4 , specifically, the cross-sectional area of ​​the first lip-shaped portion 3 is smaller than that of the second lip-shaped portion 4 .

[0053] The first slope portion 2 is the front side of the seal, and the second slope portion 5 is the rear side of the seal. The first slope portion 2 and the second slope portion 5 are arranged to be inclined and close to each other, that is, the width of the first lip portion 3 and the second lip portion 4 is smaller than the width of the matching plane 1, and the cross section of the seal is a trapezoidal structure.

[0054] The double-lip seal for sleeve-type connection effectively prevents the seal from shifting during use by setting a matching plane 1 and a groove 11; the first lip 3 and the second lip 4 of different sizes are matched, and the first lip 3 of smaller size is set close to the first slope portion 2, so that the seal has good deformation and support maintenance capabilities; the first slope portion 2 and the second slope portion 5 are inclined and close to each other, so that the cross section of the seal is a trapezoidal structure, which has better characteristics of maintaining the stability of the overall shape when squeezed, and has the effect of preventing displacement. In addition, the seal is integrally formed, simple in structure, narrow in width, small in size, and low in production cost.

[0055] like Figures 1 to 4As shown, a transition plane 6 is further provided between the first lip portion 3 and the second lip portion 4 in the seal, and the first lip portion 3 and the second lip portion 4 are connected via the transition plane 6. The width of the transition plane 6 should be appropriate, and should not be too narrow or too wide. The transition plane 6 is provided so that the first lip portion 3 and the second lip portion 4 can realize their functions independently and in cooperation with each other.

[0056] Preferably, a through hole 41 is provided in the second lip portion 4, and the through hole 41 extends through the length direction of the second lip portion 4. The through hole 41 can be a circular, elliptical or other through hole. Providing the through hole 41 in the second lip portion 4 with a larger size can effectively increase the deformation capacity of the second lip portion 4, and the through hole 41 is arranged in a circular or elliptical shape, which can well maintain the support resilience performance of the second lip portion 4.

[0057] In one embodiment, two grooves 11 are provided on the mating plane 1 of the seal. The two grooves 11 are arranged in parallel and spaced apart, dividing the mating plane 1 into three parts with substantially equal widths.

[0058] Furthermore, it is preferred that the cross section of the groove 11 is a trapezoidal structure, the parallel long sides of the trapezoidal structure (i.e., the bottom side of the trapezoid) are the bottom of the groove 11, and the parallel short sides (i.e., the top side of the trapezoid) are the opening of the groove 11. The connections of various parts of the seal are all smooth transition connections, so the corners of the trapezoidal structure of the cross section of the groove 11 are all rounded. The groove 11 is set in a trapezoidal structure, with a larger groove and a smaller opening, so that the seal has better deformation ability, stronger grip, and is not easy to shift.

[0059] In one embodiment, when the seal is used for sealing connection between the pipe 71 and the sleeve 7, the front side of the seal (i.e., the side of the first slope portion 2) is arranged toward the direction of the insertion or sleeve receiving force extrusion. Figure 6 As shown, when the mating plane 1 of the seal is mated with the inner wall of the sleeve 7, its front side is arranged toward the port of the sleeve 7, and the seal is squeezed from the front side to the rear side when the pipe 71 is installed; when the mating surface 1 of the seal is mated with the outer wall of the pipe 71 (not shown in the figure of this embodiment), the front side of the seal faces the plug-in end of the pipe 71, and when the pipe 71 and the seal are inserted into the sleeve 7, the front side of the seal is first squeezed by the sleeve 7. Example

[0060] like Figure 1 and Figure 2 As shown, this embodiment provides a double lip seal for a sleeve type connection. Based on Embodiment 1, the height of the first lip portion 3 of the seal is equal to the height of the second lip portion 4, but the width of the first lip portion 3 is smaller than the width of the second lip portion 4.

[0061] The first lip 3 is tilted, specifically, the side of the first lip 3 close to the first slope 2 is a first slope 31, and the tilt angle of the first slope 31 relative to the plane where the mating plane 1 is located is greater than the tilt angle of the first slope 2 relative to the plane where the mating plane 1 is located; the side of the first lip 3 facing the second lip 4 is an inner concave arc surface 32. When the seal is squeezed from front to back, the first lip 3 is more likely to deform and fit toward the second lip 4, and when it is stationary, the first lip 3 can quickly rebound and support to achieve the first seal, that is, the first lip 3 is provided with an inner concave arc surface 32, which makes it easier to plug and install the pipe, and the sealing effect is good after installation.

[0062] The curvature of the concave arc surface 32 is preferably within the range of 45° to 90°, which can increase deformation and maintain rebound stability. When the curvature of the concave arc surface 32 exceeds 90°, the first lip portion 3 is prone to collapse, and the rebound sealing performance will be greatly affected.

[0063] The side of the second lip-shaped portion 4 facing the first lip-shaped portion 3 is the third inclined portion 42, and the side facing the rear side of the seal (i.e., the side connected to the second broken surface 5) is the fourth inclined portion 43. In this embodiment, the width and inclination angle of the third inclined portion 42 and the fourth inclined portion 43 are equal, that is, the cross section of the second lip-shaped portion 4 is an isosceles triangle, and the waists on both sides are the cross-sections of the third inclined portion 42 and the fourth inclined portion 43. The second lip-shaped portion 4 is set to an isosceles triangle structure, which can play a good supporting and stabilizing effect. In combination with the first lip-shaped portion 3 with the inner concave arc surface 32, it can not only facilitate installation, but also ensure the stability and sealing of the seal. Example

[0064] like Figures 2 to 6 As shown, this embodiment provides a double-lip seal for a sleeve-type connection. Based on the embodiment 1, the height of the first lip portion 3 of the seal is smaller than the height of the second lip portion 4.

[0065] The first lip-shaped portion 3 is arranged at an inclination. Specifically, the side of the first lip-shaped portion 3 close to the first slope portion 2 is a first slope portion 31, and the inclination angle of the first slope portion 31 relative to the plane where the matching plane 1 is located is greater than the inclination angle of the first slope portion 2 relative to the plane where the matching plane 1 is located; the side of the first lip-shaped portion 3 facing the second lip-shaped portion 4 is a second slope portion 33, and the inclination direction of the second slope portion 33 is opposite to that of the first slope portion 31, and the inclination angle of the first slope portion 31 (the inclination angle relative to the plane where the matching plane 1 is located) is greater than the inclination angle of the second slope portion 32.

[0066] The side of the second lip portion 4 facing the first lip portion 3 is a third inclined portion 42, and the side facing the rear side of the seal (i.e., the side connected to the second broken portion 5) is a fourth inclined portion 43. The inclination directions of the third inclined portion 42 and the fourth inclined portion 43 are opposite, and the inclination angle of the third inclined portion 42 (relative to the inclination angle of the plane where the mating plane 1 is located) is greater than the inclination angle of the fourth inclined portion 43.

[0067] The inclination angles of the second inclined surface portion 33 and the fourth inclined surface portion 43 are both within the range of 93° to 110°, so that the first lip portion 3 and the second lip portion 4 can have good extrusion deformation capabilities while ensuring stable support.

[0068] Two lip-shaped parts are set, with the front smaller and the rear larger, and the front and rear sides are inclined in opposite directions, and the front side inclination is greater than the rear side inclination angle. This can greatly improve the deformation ability of the seal, facilitate plug-in installation, and at the same time ensure the rebound support of the seal to ensure sealing stability.

Claims

1. A double lip seal for a sleeve type connection, characterized in that: include: a body extending along the length direction of the seal; One side surface of the body is a matching plane (1), and a groove (11) is provided on the matching plane (1), and the groove (11) extends along the length direction of the sealing element; The body is provided with a first slope portion (2), a first lip portion (3), a second lip portion (4) and a second slope portion (5) in sequence starting from one side of the matching plane (1), and the second slope portion (5) is connected to the other side of the matching plane (1); The size of the first lip-shaped portion (3) is smaller than the size of the second lip-shaped portion (4); the first slope portion (2) is the front side surface of the sealing element, and the second slope portion (5) is the rear side surface of the sealing element; the first slope portion (2) and the second slope portion (5) are arranged to be inclined toward each other and close to each other.

2. The double lip seal for sleeve type connection according to claim 1, characterized in that: A through hole (41) is provided in the second lip-shaped portion (4), and the through hole (41) extends along the length direction of the second lip-shaped portion (4).

3. The double lip seal for sleeve type connection according to claim 2, characterized in that: Two grooves (11) are provided on the matching plane (1), and the two grooves (11) are arranged in parallel.

4. The double-lip seal for sleeve type connection according to claim 1 or 3, characterized in that: The cross section of the groove (11) is a trapezoidal structure, the parallel long sides of the trapezoidal structure are the bottom of the groove (11), and the parallel short sides are openings.

5. The double lip seal for sleeve type connection according to claim 1, characterized in that: The height of the first lip-shaped portion (3) is equal to the height of the second lip-shaped portion (4), and the width of the first lip-shaped portion (3) is smaller than the width of the second lip-shaped portion (4); A first slope portion (31) is provided on the first lip portion (3) on a side close to the first slope portion (2), and an inclination angle of the first slope portion (31) is greater than an inclination angle of the first slope portion (2); The side of the first lip-shaped portion (3) facing the second lip-shaped portion (4) is an inwardly concave arc surface (32); The side of the second lip portion (4) facing the first lip portion (3) is a third inclined portion (42), and the side facing the rear side of the seal is a fourth inclined portion (43); the width and inclination angle of the third inclined portion (42) and the fourth inclined portion (43) are equal.

6. The double-lip seal for sleeve type connection according to claim 5, characterized in that: The curvature of the inner concave curved surface (32) is in the range of 45° to 90°.

7. The double-lip seal for sleeve type connection according to claim 1, characterized in that: The height of the first lip-shaped portion (3) is smaller than the height of the second lip-shaped portion (4); A first slope portion (31) is provided on the first lip portion (3) on a side close to the first slope portion (2), and an inclination angle of the first slope portion (31) is greater than an inclination angle of the first slope portion (2); A side of the first lip-shaped portion (3) facing the second lip-shaped portion (4) is a second inclined portion (33), and the second inclined portion (33) is inclined in an opposite direction to the first inclined portion (31); The side of the second lip-shaped portion (4) facing the first lip-shaped portion (3) is a third inclined portion (42), and the side facing the rear side of the seal is a fourth inclined portion (43); the third inclined portion (42) and the fourth inclined portion (43) are inclined in opposite directions, and the inclination angle of the third inclined portion (42) is greater than the inclination angle of the fourth inclined portion (43).

8. The double-lip seal for sleeve type connection according to claim 7, characterized in that: The inclination angle of the second inclined surface (33) is 93° to 110°; The inclination angle of the fourth slope portion (43) is smaller than the inclination angle of the second slope portion (5).

9. The double-lip seal for sleeve type connection according to any one of claims 1, 5 or 7, characterized in that: The first lip portion (3) and the second lip portion (4) are connected via a transition plane (6).

10. The double-lip seal for sleeve type connection according to claim 1, characterized in that: When the sealing member is used for sealing connection between a pipe (71) and a sleeve (7), the front side surface of the sealing member is arranged toward the direction of insertion or sleeve force extrusion.

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