Sealing ring and sealing structure

Abstract

The utility model provides a sealing ring and a sealing structure, the sealing ring is composed of a body part and a sealing part, the body part extends towards the bottom to form the sealing part, and the sealing part comprises a first sealing lip and a second sealing lip. The sealing ring is in contact with the fixing plate, and the fixing plate is fixed to the end face of the outer side of the bearing box through the bolt; the sealing ring is composed of two half sealing rings, the two half sealing rings are matched to form the sealing ring, and a connector formed at the matching position of the two half sealing rings is a sealing ring connector. The fixing plate is composed of two half fixing plates, the two half fixing plates are matched to form the fixing plate, and a connector formed in the matching position of the two half fixing plates is a fixing plate connector. And the sealing ring interface and the fixing plate interface are arranged at an interval of 90 degrees. The sealing ring and the sealing structure can ensure that the internal space of the bearing box is clean, reduce the leakage of lubricating grease and reduce the frequency of maintenance and repair.

Description

Technical Field

[0001] The utility model relates to the field of split-type sealing structures, in particular to a sealing ring and a sealing structure. Background Art

[0002] The bearing box used in the split bearing unit is often used in severe splashing or completely immersed in harsh environments. Under such conditions, the internal space of the bearing box is easily contaminated, grease leakage may occur, maintenance and repair frequency is low, equipment efficiency is low, and service life is short. Utility Model Content

[0003] In view of the defects of the prior art mentioned above, the purpose of the utility model is to provide a sealing ring and a sealing structure which can reduce the leakage of grease and reduce the frequency of maintenance and repair.

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

[0005] A sealing ring is composed of a main body and a sealing part. The main body extends toward the bottom to form the sealing part. The sealing part comprises a first sealing lip and a second sealing lip.

[0006] Furthermore, a first sealing lip is arranged at the bottom of the first sealing lip, and the sealing surface of the first sealing lip is a plane; a second sealing lip is arranged at the bottom of the second sealing lip, and the sealing surface of the second sealing lip is an obtuse-angled point.

[0007] Furthermore, three arc grooves are provided on the sealing ring, namely a first arc groove, a second arc groove and a third arc groove; the first arc groove is located on the end surface of the sealing ring close to the first sealing lip, the third arc groove is located on the end surface of the sealing ring away from the first sealing lip, and a second arc groove is provided on the side wall of the third arc groove close to the second sealing lip.

[0008] Furthermore, the end surface of the sealing ring away from the first sealing lip is divided into a first end surface portion and a second end surface portion by a third arc groove, the second end surface portion is perpendicular to the top surface of the sealing ring, and the first end surface portion is not perpendicular to the top surface of the sealing ring.

[0009] Furthermore, a spring is arranged in the second arc groove.

[0010] A sealing structure based on a sealing ring also includes a fixing plate and bolts. The sealing ring contacts the fixing plate, and the fixing plate is fixed to the outer end surface of a bearing box through bolts.

[0011] Furthermore, the sealing ring is composed of two half sealing rings, which cooperate to form a sealing ring, and the interface formed by the cooperation of the two half sealing rings is a sealing ring interface; the fixed plate is composed of two half fixed plates, which cooperate to form a fixed plate, and the interface formed by the cooperation of the two half fixed plates is a fixed plate interface; the sealing ring interface and the fixed plate interface are arranged 90° apart.

[0012] Furthermore, it also includes a bearing box and a shaft, the shaft passes through the bearing box, an annular groove is arranged on the bearing box, and the annular groove is located between the shaft, the bearing box and the fixing plate; the sealing ring is arranged in the annular groove.

[0013] Furthermore, the first sealing lip is in contact with the shaft, and the second sealing lip is in interference fit with the shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] This sealing structure can be applied to the bearing box of the split bearing unit and is suitable for harsh environments such as severe splashing or complete immersion. It can ensure the cleanliness of the internal space of the bearing box, reduce grease leakage, reduce the frequency of maintenance and repair, and ensure efficient operation of the equipment. It is a split seal with good force performance, long service life and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] in:

[0018] Figure 1 Schematic diagram of the cross-sectional structure of the sealing ring;

[0019] Figure 2 is a schematic diagram of the cross-sectional structure of the sealing structure;

[0020] Figure 3 is a schematic diagram of the fixed plate structure;

[0021] Figure 4 This is a schematic diagram of the structure after the sealing ring and the fixing plate are installed together;

[0022] Figure 5 This is a schematic diagram of the structure after the half sealing ring and the half fixed plate are installed together.

[0023] In the figure: 1 is the first sealing lip; 2 is the second sealing lip; 3 is the first arc groove; 4 is the second arc groove; 5 is the third arc groove; 6 is the shaft; 7 is the fixing plate; 8 is the bolt; 9 is the bearing box; 10 is the sealing ring; 11 is the fixing plate interface; 12 is the sealing ring interface; 14 is the first end surface portion; 15 is the second end surface portion. DETAILED DESCRIPTION

[0024] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See attached Figure 1-3 The utility model provides a sealing ring, the sealing ring 10 is composed of a main body and a sealing part, the main body extends toward the bottom to form the sealing part, and the sealing part includes a first sealing lip 1 and a second sealing lip 2.

[0026] Furthermore, a first sealing lip is provided at the bottom of the first sealing lip 1, and the sealing surface of the first sealing lip is a plane; a second sealing lip is provided at the bottom of the second sealing lip 2, and the sealing surface of the second sealing lip is an obtuse point.

[0027] Furthermore, three arc grooves are provided on the sealing ring 10, namely a first arc groove 3, a second arc groove 4 and a third arc groove 5; the first arc groove 3 is located on the end surface of the sealing ring 10 close to the first sealing lip 1, the third arc groove 5 is located on the end surface of the sealing ring 10 away from the first sealing lip 1, and the second arc groove 4 is provided on the side wall of the third arc groove 5 close to the second sealing lip 2. The first arc groove 3, the second arc groove 4 and the third arc groove 5 are provided on the sealing ring 10 to ensure that the elastic deformation after being subjected to force will not affect the sealing effect of the sealing ring.

[0028] Furthermore, the end surface of the sealing ring 10 away from the first sealing lip 1 is divided into a first end surface portion 14 and a second end surface portion 15 by the third arc groove 5, the second end surface portion 15 is perpendicular to the top surface of the sealing ring 10, and the first end surface portion 14 is not perpendicular to the top surface of the sealing ring 10. The first end surface portion 14 is inclined to optimize the sealing shape, reduce the sealing weight, and reduce the friction with the fixing plate.

[0029] Furthermore, a spring is arranged in the second arc groove 4 to improve the sealing effect of the sealing ring.

[0030] The sealing structure using the sealing ring further comprises a fixing plate 7 and bolts 8 . The sealing ring 10 is in contact with the fixing plate 7 . The fixing plate 7 is fixed to the outer end surface of the bearing box 9 by the bolts 8 .

[0031] Furthermore, the sealing ring 10 is composed of two half sealing rings, which cooperate to form the sealing ring 10, and the interface formed by the cooperation of the two half sealing rings is the sealing ring interface 12; the fixed plate 7 is composed of two half fixed plates, which cooperate to form the fixed plate 7, and the interface formed by the cooperation of the two half fixed plates is the fixed plate interface 11; the sealing ring interface 12 and the fixed plate interface 11 are arranged 90° apart.

[0032] Furthermore, it also includes a bearing box 9 and a shaft 6, wherein the shaft 6 passes through the bearing box 9, and an annular groove is arranged on the bearing box 9, wherein the annular groove is located between the shaft 6, the bearing box 9 and the fixing plate 7; and the sealing ring 10 is arranged in the annular groove.

[0033] After the sealing ring 10 is pressed into the ring groove, a fixing plate 7 is installed at the end face of the sealing ring 10. During installation, the fixing plate interface 11 and the sealing ring interface 12 are separated by 90 degrees and fixed with bolts 8 to prevent the entry of foreign matter from the outside. This sealing structure is suitable for occasions such as severe splashing and complete immersion. When the fixing plate is installed, the lower part of the sealing ring does not deform, and the fixing plate prevents the sealing ring from falling out, and can also block some foreign matter from entering.

[0034] Furthermore, the first sealing lip 1 is fitted with the shaft 6 to ensure that the grease does not leak out; the second sealing lip 2 is interference fit with the shaft 6, the actual size of the tip of the sealing lip is smaller than the actual size of the shaft, and the tolerance zone of the tip size of the sealing lip is below the shaft. The interference is determined according to the rotation speed and specific size, effectively preventing external impurities, muddy water, etc. from entering.

[0035] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A sealing ring, characterized in that: The sealing ring consists of a main body and a sealing part. The main body extends toward the bottom to form a sealing part. The sealing part includes a first sealing lip and a second sealing lip. A first sealing lip is arranged at the bottom of the first sealing lip, and the sealing surface of the first sealing lip is a plane. A second sealing lip is arranged at the bottom of the second sealing lip, and the sealing surface of the second sealing lip is an obtuse-angled point.

2. A sealing ring according to claim 1, characterized in that: The sealing ring is also provided with three arc grooves, namely a first arc groove, a second arc groove and a third arc groove; the first arc groove is located on the end surface of the sealing ring close to the first sealing lip, the third arc groove is located on the end surface of the sealing ring away from the first sealing lip, and a second arc groove is provided on the side wall of the third arc groove close to the second sealing lip.

3. A sealing ring according to claim 2, characterized in that: The end surface of the sealing ring away from the first sealing lip is divided into a first end surface portion and a second end surface portion by a third arc groove, the second end surface portion is perpendicular to the top surface of the sealing ring, and the first end surface portion is not perpendicular to the top surface of the sealing ring.

4. A sealing ring according to claim 2, characterized in that: A spring is arranged in the second arc groove.

5. A sealing structure based on a sealing ring, characterized in that: It comprises the sealing ring as described in any one of claims 1 to 4, and also comprises a fixing plate and bolts, wherein the sealing ring contacts the fixing plate, and the fixing plate is fixed to the outer end face of the bearing box by bolts.

6. A sealing structure based on a sealing ring according to claim 5, characterized in that: The sealing ring is composed of two half sealing rings, which cooperate to form a sealing ring, and the interface formed by the cooperation of the two half sealing rings is the sealing ring interface; the fixed plate is composed of two half fixed plates, which cooperate to form a fixed plate, and the interface formed by the cooperation of the two half fixed plates is the fixed plate interface; the sealing ring interface and the fixed plate interface are arranged 90° apart.

7. A sealing structure based on a sealing ring according to claim 5, characterized in that: It also includes a bearing box and a shaft, wherein the shaft passes through the bearing box, an annular groove is arranged on the bearing box, and the annular groove is located between the shaft, the bearing box and the fixing plate; and the sealing ring is arranged in the annular groove.

8. A sealing structure based on a sealing ring according to claim 7, characterized in that: The first sealing lip is in contact with the shaft, and the second sealing lip is in interference fit with the shaft.

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