Novel high-performance combined sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and discloses a novel high-performance combined sealing ring which comprises an outer framework, a first sealing ring is wrapped on the surface of the outer framework, an inner framework is arranged on the side, away from the outer framework, of the first sealing ring, and a second sealing ring is wrapped at a groove in the side, away from the first sealing ring, of the inner framework. A mud water inlet is formed between the first sealing ring and the inner framework, a grease lip portion is arranged on the outer side of the first sealing ring and protrudes in the axial direction of the first sealing ring, a mud water lip portion is arranged on the outer side of the first sealing ring and protrudes in the axial direction of the first sealing ring, and a pre-sealing portion is arranged on the outer side of the first sealing ring and protrudes in the axial direction of the first sealing ring and used for preventing silt from directly soaking the mud water lip portion. And the sealing ring I is additionally provided with a pre-sealing part, so that the muddy water is effectively prevented from directly reaching the muddy water lip part and the grease lip part, the axial friction is reduced, and the sealing performance of the sealing ring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, and more specifically, to a novel high-performance combined sealing ring. Background Art

[0002] The outer sealing ring of the original structure mainly consists of a skeleton and a rubber body with three or four lips.

[0003] For example, the applicant's authorized patent publication number is "CN208123445U", which is a new type of structural skeleton external sealing ring. The invention comprises: a rubber layer in an integral structure is provided on a rubber body (2), the rubber layer is wrapped on a metal ring skeleton (1), a first sealing lip (3) protruding from the outside of the rubber body (2) along its axial direction, a second sealing lip (4) protruding from the outside of the rubber body (2) along its axial direction, a third sealing lip (5) protruding from the outside of the rubber body (2) along its axial direction, a fourth sealing lip (6) protruding from the outside of the rubber body (2) along its axial direction, and a fifth sealing lip (7) protruding from the outside of the rubber body (2) along its axial direction. Compared with existing products, the sealing effect of the product is better.

[0004] In the above structure, the excessive number of sealing lips results in a large reaction force of the sealing lips, which increases the burden on the torque and the material cost of production. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a new type of high-performance combined sealing ring.

[0006] The utility model provides a new type of high-performance combined sealing ring adopts the following technical solutions:

[0007] A new type of high-performance combined sealing ring, including an exoskeleton, the surface of the exoskeleton is wrapped with sealing ring 1, an inner skeleton is provided on the side of sealing ring 1 away from the exoskeleton, and sealing ring 2 is wrapped in the groove on the side of the inner skeleton away from sealing ring 1, a grease lip is provided on the outside of sealing ring 1 and protrudes along its axial direction, a mud and water lip is provided on the outside of sealing ring 1 and protrudes along its axial direction, and a pre-sealing part is provided on the outside of sealing ring 1 and protrudes along its axial direction for preventing mud and sand from directly penetrating the mud and water lip.

[0008] Preferably, a muddy water inlet is formed between the sealing ring 1 and the inner frame to reduce the amount of muddy water that penetrates into the interior of the sealing ring 1.

[0009] Preferably, the mud and water lip and the grease lip form a labyrinth lip group, and the pre-sealing portion and the labyrinth lip group are combined to form a Tesla valve structure to slow down the entry of mud and water.

[0010] Preferably, the inner skeleton is made of stainless steel.

[0011] Preferably, the exoskeleton is made of SPCC material.

[0012] Preferably, the sealing ring 1 includes a grease lip, a mud and water lip, and a pre-sealing portion, and the sealing ring 1 is provided with the grease lip, the mud and water lip, and the pre-sealing portion in sequence from right to left.

[0013] In summary, the present invention has the following beneficial technical effects:

[0014] The utility model opens a mud and water inlet between the sealing ring 1 and the inner frame, strengthens the labyrinth structure, reduces the mud and water that invades the inside of the sealing ring 1, adds a pre-sealing part on the sealing ring 1, effectively prevents mud and water from directly reaching the mud and water lip and the grease lip, reduces axial friction, and is provided with an inner frame on the rotating surface of the labyrinth lip of the sealing ring 1 to prevent abnormal wear of the labyrinth lip. Through the design and coordination of the sealing ring 1, the inner frame, the sealing ring 2, the pre-sealing part, the mud and water lip, and the grease lip, the number of lips is effectively reduced, thereby reducing the reaction force of the lip and lowering the torque. The inner frame prevents external foreign matter from infiltrating the sealing structure through the action of centrifugal force. The inner frame is made of stainless steel to inhibit rusting of the bearing flange, prevent mouth damage, reduce torque and extend service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the outer sealing ring of the skeleton in the embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structural diagram of the outer sealing ring of the skeleton in the embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structural diagram of the outer sealing ring of the skeleton in the embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structural diagram of the outer sealing ring of the skeleton in the embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the graphic structure of the skeleton outer sealing ring product in the embodiment of the present utility model.

[0020] Explanation of the accompanying reference numerals: 1. External frame; 2. Sealing ring 1; 3. Internal frame; 4. Sealing ring 2; 5. Pre-sealing part; 6. Mud and water lip; 7. Grease lip; 8. Mud and water inlet. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-5 The utility model is described in further detail.

[0022] It should be noted that the drawings are schematic and not drawn to scale. For clarity and convenience, the relative sizes and proportions of parts shown in the drawings may be exaggerated or reduced in size. Any dimensions are illustrative only and are not intended to be limiting. Identical structures, elements, or components appearing in two or more drawings are denoted by the same reference numerals to indicate similar features.

[0023] The embodiment of the utility model discloses a new type of high performance combined sealing ring. Figure 1-5 A new type of high-performance combined sealing ring includes an outer frame 1, which is made of SPCC material. The surface of the outer frame 1 is wrapped with a sealing ring 2. The boss of the sealing ring 2 mainly prevents external mud and water from entering through the gap of the outer flange. The side of the sealing ring 2 away from the outer frame 1 is provided with an inner frame 3. The sealing ring 2 and the inner frame 3 form a labyrinth structure. The inner frame 3 is made of stainless steel to inhibit rusting of the bearing and prevent abnormal wear of the sealing lip. The inner frame 3 is installed on the rotating shaft and prevents external foreign matter from penetrating into the sealing device through the action of centrifugal force.

[0024] A muddy water inlet 8 is formed between the sealing ring 2 and the inner frame 3 to reduce the amount of muddy water that enters the sealing ring 2. The groove on the side of the inner frame 3 away from the sealing ring 2 is wrapped with the sealing ring 4. A grease lip 7 protrudes from the outside of the sealing ring 2 and along its axial direction. The grease lip 7 is embedded in the outer diameter of the outer wheel to ensure space, reduce the thickness of the lip, increase the length, and reduce the torque; reduce the influence of interference and reduce the reaction force of the lip;

[0025] A grease lip 7 is provided on the outside of the sealing ring 2 and protrudes along its axial direction. A pre-sealing portion 5 is provided on the outside of the sealing ring 2 and protrudes along its axial direction to prevent mud and sand from directly penetrating the mud and water lip 6. The sealing ring 2 includes the grease lip 7, the mud and water lip 6, and the pre-sealing portion 5. The sealing ring 2 is provided with the grease lip 7, the mud and water lip 6, and the pre-sealing portion 5 in sequence from right to left. The mud and water lip 6 and the grease lip 7 form a labyrinth lip group. The pre-sealing portion 5 and the labyrinth lip group form a Tesla valve structure to slow down the entry of mud and water. The inner skeleton 3 is located on the rotating surface side of the labyrinth lip.

[0026] Specifically, a mud and water inlet 8 is opened between the sealing ring 2 and the inner frame 3 to strengthen the labyrinth structure and reduce the mud and water invading the inside of the sealing ring 2. A pre-sealing part 5 is added to the sealing ring 2 to effectively prevent the mud and water from directly reaching the mud and water lip 6 and the grease lip 7, thereby reducing axial friction. An inner frame 3 is provided on the rotating surface of the labyrinth lip of the sealing ring 2 to prevent abnormal wear of the labyrinth lip. Through the design and coordination of the sealing ring 2, the inner frame 3, the sealing ring 4, the pre-sealing part 5, the mud and water lip 6 and the grease lip 7, the number of lips is effectively reduced, thereby reducing the lip reaction force and lowering the torque. The inner frame 3 prevents external foreign matter from infiltrating the sealing structure through the action of centrifugal force. The inner frame 3 is made of stainless steel to inhibit the rust of the bearing flange, prevent mouth damage, reduce torque and extend service life.

[0027] Finally, a few points should be explained: First, in the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0029] Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of high performance combined sealing ring, comprising an outer frame (1), characterized in that: The surface of the outer frame (1) is wrapped with a sealing ring (2), the side of the sealing ring (2) away from the outer frame (1) is provided with an inner frame (3), the groove of the side of the inner frame (3) away from the sealing ring (2) is wrapped with a sealing ring (4), the outer side of the sealing ring (2) and a position protruding along its axial direction is provided with a grease lip (7), the outer side of the sealing ring (2) and a mud and water lip (6) protruding along its axial direction, and the outer side of the sealing ring (2) and a pre-sealing portion (5) protruding along its axial direction for preventing mud and sand from directly penetrating the mud and water lip (6) are provided.

2. A new type of high performance combined sealing ring according to claim 1, characterized in that: A muddy water inlet (8) is formed between the sealing ring (2) and the inner frame (3) to reduce the amount of muddy water that enters the interior of the sealing ring (2).

3. A new type of high performance combined sealing ring according to claim 1, characterized in that: The muddy water lip (6) and the grease lip (7) form a labyrinth lip group, and the pre-sealing portion (5) and the labyrinth lip group are combined to form a Tesla valve structure, which slows down the entry of muddy water.

4. A novel high-performance combined sealing ring according to claim 1, characterized in that: The inner frame (3) is made of stainless steel.

5. The novel high-performance combined sealing ring according to claim 1 is characterized in that: The outer frame (1) is made of SPCC material.

6. A novel high-performance combined sealing ring according to claim 1, characterized in that: The sealing ring 1 (2) comprises a grease lip (7), a muddy water lip (6), and a pre-sealing portion (5). The sealing ring 1 (2) is provided with the grease lip (7), the muddy water lip (6), and the pre-sealing portion (5) in sequence from right to left.

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