Laminated combined sealing element

Abstract

The utility model discloses a laminated combined sealing element which comprises a soft rubber sealing ring body, a metal supporting ring is embedded in the soft rubber sealing ring body, the outer end side of the metal supporting ring is provided with a plane flush with the first end face of the soft rubber sealing ring body, and a plurality of screw holes are formed in the plane. A cavity is formed in the metal supporting ring, a first end face outer cover of the soft rubber sealing ring body is provided with a soft rubber shaft sealing ring, the inner diameter of the soft rubber shaft sealing ring is smaller than that of the soft rubber sealing ring body, and the outer diameter of the soft rubber shaft sealing ring is the same as that of the soft rubber sealing ring body. A plurality of bolts which can be in threaded connection with the screw holes in a one-to-one correspondence mode and extend into the cavities are arranged on the soft rubber shaft sealing ring in a penetrating mode. According to the laminated combined sealing element, the soft rubber shaft sealing ring which is detachably connected is adopted, later maintenance and replacement are facilitated, the maintenance cost and the maintenance difficulty are reduced, and meanwhile, the structural strength of the soft rubber sealing ring body is improved by adopting the metal supporting ring.

Description

Technical Field

[0001] The utility model relates to the field of sealing, in particular to a stacked combined sealing element. Background Art

[0002] Seals are widely used in industries that require high precision and reliability, such as manufacturing, automotive, and aerospace. Bearing seals, for example, are used to protect bearings from external factors such as dust, dirt, moisture, and other abrasive substances, while maintaining proper lubrication levels, reducing maintenance requirements, and preventing premature failure.

[0003] Publication number CN202149204U discloses a reinforced plastic seal, comprising a sealing upper portion and a sealing lower portion, wherein the reinforced plastic seal has a U-shaped cross-section, the upper opening of the sealing upper portion is an arc-shaped surface, an open groove is provided on the upper side of the seal, and an inward groove is provided on the side of the open groove close to the sealing upper portion, and a bow-shaped spring sheet is installed in the groove.

[0004] The sealing portion of the reinforced plastic seal is an integrated arrangement. The lower sealing portion thereof needs to be replaced as a whole after being worn due to long-term frictional contact with the shaft, which is cumbersome to operate and has a high replacement cost. Utility Model Content

[0005] The purpose of the utility model is to provide a laminated composite seal, which adopts a detachably connected soft rubber shaft sealing ring to facilitate later maintenance and replacement, reduce maintenance costs and repair difficulty, and at the same time, adopt a metal support ring to improve the structural strength of the soft rubber sealing ring body.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a stacked combination seal, which includes a soft rubber sealing ring body, a metal support ring embedded in the soft rubber sealing ring body, the outer end side of the metal support ring is provided with a plane flush with the first end face of the soft rubber sealing ring body, a plurality of screw holes are provided on the plane, the interior of the metal support ring is provided as a cavity, the first end face outer cover of the soft rubber sealing ring body is provided with a soft rubber shaft sealing ring, the inner diameter of the soft rubber shaft sealing ring is smaller than the inner diameter of the soft rubber sealing ring body, the outer diameter of the soft rubber shaft sealing ring is the same as the outer diameter of the soft rubber sealing ring body, and a plurality of bolts that can be screwed into the screw holes one by one and extend into the cavity are provided through the soft rubber shaft sealing ring.

[0007] Preferably, the metal support ring includes a U-shaped ring and a trapezoidal ring connected to each other, the U-shaped ring is arranged at one end close to the first end face, and the trapezoidal ring is arranged at one end close to the second end face of the soft rubber sealing ring body, the first end face and the second end face are arranged opposite to each other, the width of the end of the trapezoidal ring close to the first end face is greater than the width of the end close to the second end face, the width of the U-shaped ring is smaller than the width of the end of the trapezoidal ring close to the first end face, and the screw hole is arranged on the outer end side of the U-shaped ring.

[0008] Preferably, a first concave ring is provided on the inner edge of the first end surface of the soft rubber sealing ring body, a second concave ring is provided on the outer edge of the first end surface of the soft rubber sealing ring body, and the end surface of the soft rubber shaft sealing ring is provided with a first annular convex portion embedded in the first concave ring, and a second annular convex portion embedded in the second concave ring.

[0009] Preferably, the soft rubber shaft sealing ring is provided with a plurality of countersunk holes coaxial with the screw holes, the bolts are countersunk bolts, and flat washers are provided between the countersunk bolts and the countersunk holes.

[0010] Preferably, an outer convex sealing ring is provided on the inner edge of the outer end of the soft rubber shaft sealing ring, and the outer side surface of the outer convex sealing ring is a slope.

[0011] Preferably, a plurality of annular grooves are provided on the inner side of the soft rubber sealing ring body near the first end surface thereof.

[0012] According to the above technical solution, the utility model provides a stacked combination seal, which includes a soft rubber sealing ring body, a metal support ring embedded in the soft rubber sealing ring body, and a plane flush with the first end face of the soft rubber sealing ring body is provided on the outer end side of the metal support ring, and a plurality of screw holes are provided on the plane. The interior of the metal support ring is set as a cavity, and the first end face outer cover of the soft rubber sealing ring body is provided with a soft rubber shaft sealing ring. The inner diameter of the soft rubber shaft sealing ring is smaller than the inner diameter of the soft rubber sealing ring body, and the outer diameter of the soft rubber shaft sealing ring is the same as the outer diameter of the soft rubber sealing ring body. The soft rubber shaft sealing ring is penetrated by a plurality of bolts that can be screwed into the screw holes one by one and extend into the cavity.

[0013] The beneficial effects of the stacked combination seal are as follows: 1. The soft rubber shaft sealing ring and the soft rubber sealing ring body are connected in a stacked and split manner by bolts, and the bearing is installed in the soft rubber sealing ring body to achieve bearing sealing. The shaft body passing through the bearing is in sealing contact with the soft rubber shaft sealing ring to achieve shaft sealing. Due to the friction contact between the soft rubber shaft sealing ring and the shaft, its service life is shorter than the soft rubber sealing ring body. When the soft rubber shaft sealing ring is damaged, it can be disassembled and replaced separately, reducing maintenance costs and repair difficulty; 2. By embedding a metal support ring with a cavity, on the one hand, the structural strength of the soft rubber sealing ring body can be increased, and on the other hand, it can also serve as a screw connection basis for the bolts, so that the bolts can be stably screwed, thereby improving the connection stability of the soft rubber shaft sealing ring and facilitating installation.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a laminated composite seal;

[0017] Figure 2 1 is a schematic top view of a preferred embodiment of a laminated composite seal;

[0018] Figure 3 yes Figure 2 AA cross-sectional structure diagram.

[0019] Description of Reference Numerals

[0020] 1-soft rubber sealing ring body; 2-soft rubber shaft sealing ring; 3-countersunk bolt; 4-convex sealing ring; 5-trapezoidal ring; 6-cavity; 7-first annular protrusion; 8-annular groove; 9-flat washer; 10-second annular protrusion; 11-U-shaped ring. DETAILED DESCRIPTION

[0021] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0022] In the present invention, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the term in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0023] See also Figure 1-3 The stacked composite seal shown includes a soft rubber sealing ring body 1, a metal support ring embedded in the soft rubber sealing ring body 1, and a plane flush with the first end face of the soft rubber sealing ring body 1 provided on the outer end side of the metal support ring, a plurality of screw holes provided on the plane, and a cavity 6 provided inside the metal support ring. The first end face outer cover of the soft rubber sealing ring body 1 is provided with a soft rubber shaft sealing ring 2, the inner diameter of the soft rubber shaft sealing ring 2 is smaller than the inner diameter of the soft rubber sealing ring body 1, and the outer diameter of the soft rubber shaft sealing ring 2 is the same as the outer diameter of the soft rubber sealing ring body 1, and a plurality of bolts that can be screwed into the screw holes and extend into the cavity 6 are provided through the soft rubber shaft sealing ring 2.

[0024] Through the implementation of the above technical solution, on the one hand, the soft rubber shaft sealing ring 2 and the soft rubber sealing ring body 1 are connected in a stacked and split manner by bolts, and bearings are installed in the soft rubber sealing ring body 1 to achieve bearing sealing. The shaft body passing through the bearing is in sealed contact with the soft rubber shaft sealing ring 2 to achieve shaft sealing. Due to the friction contact between the soft rubber shaft sealing ring 2 and the shaft, its service life is shorter than the soft rubber sealing ring body 1. When the soft rubber shaft sealing ring 2 is damaged, it can be disassembled and replaced separately, reducing maintenance costs and repair difficulty; on the other hand, by embedding a metal support ring with a cavity 6, on the one hand, the structural strength of the soft rubber sealing ring body 1 can be increased, and on the other hand, it can also serve as a screw connection basis for the bolts, so that the bolts can be stably screwed, thereby improving the connection stability of the soft rubber shaft sealing ring 2 and facilitating installation.

[0025] In this embodiment, in order to further provide a metal support ring, the metal support ring includes a U-shaped ring 11 and a trapezoidal ring 5 that are connected to each other, the U-shaped ring 11 is arranged at one end close to the first end face, the trapezoidal ring 5 is arranged at one end close to the second end face of the soft rubber sealing ring body 1, the first end face and the second end face are arranged opposite to each other, the width of the end of the trapezoidal ring 5 close to the first end face is greater than the width of the end close to the second end face, the width of the U-shaped ring 11 is less than the width of the end of the trapezoidal ring 5 close to the first end face, and the screw hole is arranged on the outer end side of the U-shaped ring 11. The open trapezoidal ring 5 is arranged on the U-shaped ring 11, and the end face of the trapezoidal ring 5 facing the U-shaped ring 11 is provided with an opening connected to the U-shaped ring 11, and the two are connected. In addition, the width of the U-shaped ring 11 is less than the width of the end of the trapezoidal ring 5 close to the first end face, and a stable anti-pullout structure is formed by the protruding shoulder surface parts at both ends of the trapezoidal ring 5.

[0026] In this embodiment, a first concave ring is provided on the inner edge of the first end surface of the soft rubber sealing ring body 1, a second concave ring is provided on the outer edge of the first end surface of the soft rubber sealing ring body 1, and a first annular protrusion 7 that engages with the first concave ring and a second annular protrusion 10 that engages with the second concave ring are provided on the end surface of the soft rubber shaft sealing ring 2. Through this arrangement, the soft rubber sealing ring body 1 and the soft rubber shaft sealing ring 2 can be interlocked and connected to each other, improving the assembly stability and sealing performance between the two.

[0027] In this embodiment, the soft rubber shaft seal ring 2 is provided with a plurality of countersunk holes coaxial with the screw holes. The bolts are countersunk bolts 3, and flat washers 9 are provided between the countersunk bolts 3 and the countersunk holes. This arrangement allows the heads of the countersunk bolts 3 to be submerged in the installation. The flat washers 9 are sleeved on the countersunk bolts 3 and disposed between the heads of the countersunk bolts 3 and the countersunk holes.

[0028] In this embodiment, a protruding sealing ring 4 is provided on the inner edge of the outer end of the soft rubber shaft sealing ring 2. The outer surface of the protruding sealing ring 4 is beveled. This arrangement increases the sealing area of ​​the inner sealing surface of the soft rubber shaft sealing ring 2, thereby improving the shaft sealing effect. The outer surface of the protruding sealing ring 4 is beveled, and the thickness of the protruding sealing ring 4 gradually increases from the outside to the inside, enhancing its structural stability.

[0029] In this embodiment, a plurality of annular grooves 8 are provided on the inner side of the soft rubber sealing ring body 1 near its first end face. This arrangement optimizes the structure of the soft rubber sealing ring body 1, reduces the overall weight, and saves consumables without affecting the sealing.

[0030] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0031] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0032] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A laminated composite seal, characterized in that: The stacked composite seal comprises a soft rubber sealing ring body (1), a metal support ring is embedded in the soft rubber sealing ring body (1), a plane flush with the first end face of the soft rubber sealing ring body (1) is provided on the outer end side of the metal support ring, a plurality of screw holes are provided on the plane, the interior of the metal support ring is provided as a cavity (6), the first end face outer cover of the soft rubber sealing ring body (1) is provided with a soft rubber shaft sealing ring (2), the inner diameter of the soft rubber shaft sealing ring (2) is smaller than the inner diameter of the soft rubber sealing ring body (1), the outer diameter of the soft rubber shaft sealing ring (2) is the same as the outer diameter of the soft rubber sealing ring body (1), and a plurality of bolts are provided through the soft rubber shaft sealing ring (2) which can be screwed into the screw holes one by one and extend into the cavity (6).

2. The laminated composite seal according to claim 1, characterized in that: The metal support ring comprises a U-shaped ring (11) and a trapezoidal ring (5) which are connected to each other, wherein the U-shaped ring (11) is arranged at one end close to the first end face, and the trapezoidal ring (5) is arranged at one end close to the second end face of the soft rubber sealing ring body (1), the first end face and the second end face are arranged opposite to each other, the width of the end of the trapezoidal ring (5) close to the first end face is greater than the width of the end close to the second end face, the width of the U-shaped ring (11) is less than the width of the end of the trapezoidal ring (5) close to the first end face, and the screw hole is arranged on the outer end side of the U-shaped ring (11).

3. The laminated composite seal according to claim 1, characterized in that: A first concave ring is provided on the inner edge of the first end surface of the soft rubber sealing ring body (1), and a second concave ring is provided on the outer edge of the first end surface of the soft rubber sealing ring body (1); The end surface of the soft rubber shaft sealing ring (2) is provided with a first annular convex portion (7) engaged with the first concave ring, and a second annular convex portion (10) engaged with the second concave ring.

4. The laminated composite seal according to claim 1, characterized in that: The soft rubber shaft sealing ring (2) is provided with a plurality of countersunk holes coaxial with the screw holes, the bolts are countersunk bolts (3), and flat washers (9) are provided between the countersunk bolts (3) and the countersunk holes.

5. The laminated composite seal according to claim 1, characterized in that: An outer convex sealing ring (4) is provided on the inner edge of the outer end of the soft rubber shaft sealing ring (2); The outer side surface of the outwardly convex sealing ring (4) is a sloped surface.

6. The laminated composite seal according to claim 1, characterized in that: A plurality of annular grooves (8) are provided on the inner side of the soft rubber sealing ring body (1) near the first end surface thereof.

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