Sealing ring convenient to assemble and assembling method thereof

Abstract

The invention discloses a sealing ring convenient to assemble and an assembling method thereof, and belongs to the technical field of sealing washs.The sealing ring convenient to assemble comprises a sealing ring body, an inner concave part is arranged in the middle of the outer edge of the sealing ring body, the two sides of the inner concave part extend outwards to form matching parts, and a main lip part and an auxiliary lip part used for dust prevention are arranged on the inner edge of the sealing ring body; the main lip part and the auxiliary lip part are matched to form a surrounding area of a V-shaped structure, and the top end of the V-shaped structure of the surrounding area deviates to one side of the main lip part, so that interference fit between the rotating shaft and the sealing ring is realized, external dust can be effectively prevented from entering the space between the rotating shaft and the sealing ring in the running process of the rotating shaft, and the service life of the rotating shaft is prolonged. According to the sealing device, abrasion of dust particles between the sealing ring and the rotating shaft is effectively avoided, the sealing ring is protected, the service life is prolonged, dust existing between the rotating shaft and the sealing ring can be effectively prevented from further entering, and leakage of lubricating oil or entering of external pollutants is prevented.

Description

Technical Field

[0001] The invention mainly relates to the technical field of sealing rings, and in particular to a sealing ring which is easy to assemble and an assembling method thereof. Background Art

[0002] A sealing ring is a sealing element used to prevent fluid or gas leakage. It is usually installed at the connection of mechanical equipment or between rotating or reciprocating parts. The sealing ring can effectively prevent fluid or gas from leaking from the high-pressure area of ​​the mechanical equipment to the low-pressure area. It can also prevent external dust and impurities from entering the interior of the mechanical equipment and protect internal components.

[0003] The fit between the sealing ring and the rotating shaft is usually an interference fit, which refers to a fit with interference (including a minimum interference equal to zero). This fit can effectively prevent the sealing ring from falling off or leaking when rotating at high speed or subjected to external force, thereby ensuring the normal operation and safety of the mechanical equipment. During the operation of the rotating shaft, dust on the outward side of the lower sealing ring can easily enter between the sealing ring and the rotating shaft and cannot be cleaned, so that the dust particles will cause wear between the sealing ring and the rotating shaft like abrasives, accelerate the wear of the sealing ring, shorten its service life, and the accumulation of dust may destroy the integrity of the sealing ring, resulting in a decrease in sealing performance, thereby causing lubricating oil leakage or the entry of external contaminants. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the present invention mainly provides a sealing ring that is easy to assemble and an assembly method thereof, so as to solve the technical problem raised in the above background technology that dust particles enter between the sealing ring and the rotating shaft and cannot be cleaned, so that the dust particles will cause wear between the sealing ring and the rotating shaft like abrasives, thereby accelerating the wear of the sealing ring.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A sealing ring that is easy to assemble comprises a sealing ring body, wherein an inner recess is arranged in the middle of the outer edge of the sealing ring body, and the two sides of the inner recess extend outward to form a matching portion, and the inner edge of the sealing ring body is provided with a main lip and an auxiliary lip for dust prevention, wherein the main lip and the auxiliary lip cooperate to form an encirclement area of ​​a V-shaped structure, and the top of the V-shaped structure of the encirclement area is biased toward one side of the main lip.

[0006] Furthermore, a polyurethane reinforcement layer is provided on the main lip, the auxiliary lip and the encircled area.

[0007] Furthermore, a first placement opening is provided on one side of the sealing ring body, and the first placement opening is narrow at the top and wide at the bottom. An annular reinforcement rib is provided in the first placement opening, and the annular reinforcement rib is tightly matched with the lower end of the first placement opening.

[0008] Furthermore, a second placement opening is provided on the sealing ring body, the second placement opening is on the same side as the first placement opening, the second placement opening is an L-shaped structure, and the second placement opening is located outside the main lip, and an elastic hollow ring is provided in the second placement opening.

[0009] Furthermore, a third placement opening is provided on the other side of the sealing ring body, the third placement opening is located on the outside of the auxiliary lip, and a locking ring is embedded in the third placement opening.

[0010] Furthermore, a clamping groove and a clamping block are respectively provided at both ends of the locking ring, and the clamping groove and the clamping block fit with each other.

[0011] An assembly method for a sealing ring that is easy to assemble, the assembly method specifically comprising the following steps: Step 1: First check whether there is any damage on the surface of the sealing ring body, annular reinforcement rib, elastic hollow ring and locking ring, and stretch the sealing ring body to check whether the elasticity and toughness are qualified; Step 2: Place the sealing ring body with the first placement opening and the second placement opening facing upward on the platform, and then insert the annular reinforcement rib into the first placement opening so that the annular reinforcement rib fits tightly with the lower end of the first placement opening, and then insert the elastic hollow ring into the second placement opening; Step 3: Place the sealing ring body on the platform with the third placement port facing upwards, then insert the locking ring into the third placement port, and then install the sealing ring body on the shaft with an interference fit, and adjust the fit between the block and the slot so that the auxiliary lip for dust prevention fits tightly against the shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention realizes an interference fit between the rotating shaft and the sealing ring by providing the sealing ring body, the inner recess, the matching part, the main lip, the auxiliary lip and the annular reinforcing rib. The annular reinforcing rib also increases the mechanical strength of the sealing ring, making it less likely to deform when subjected to axial or radial forces, thereby maintaining the sealing performance. The presence of the reinforcing rib can disperse the contact pressure between the sealing ring and the rotating shaft, reduce local wear and extend the service life of the sealing ring. If under high pressure, the reinforcing rib helps to prevent the sealing ring from being squeezed out of the sealing groove and maintain its stable position in the groove. Under the action of the elastic hollow ring, the elasticity and resilience of the main lip are increased, so that the sealing ring can better fit the rotating shaft when subjected to pressure, thereby further improving the sealing effect and reducing the possibility of leakage.

[0013] (2) The present invention realizes that during the operation of the rotating shaft, the auxiliary lip can be tightly fitted with the rotating shaft by arranging the sealing ring body, the main lip, the auxiliary lip, the locking ring, the clamping block and the clamping groove, so that the auxiliary lip can effectively prevent external dust from entering between the rotating shaft and the sealing ring, effectively avoid the wear caused by dust particles between the sealing ring and the rotating shaft, protect the sealing ring, and increase the service life. Under the action of the encirclement area, the space for dust particles to jump is increased, and dust particles are prevented from entering the interior of the equipment along the gap between the sealing ring and the rotating shaft under the action of friction and radial force like traditional sealing rings, thereby effectively preventing the existing dust between the rotating shaft and the sealing ring from further entering, preventing the leakage of lubricating oil or the entry of external pollutants. Due to the spatial layout of the encirclement area and the auxiliary lip in contact with the outside world, it is convenient to clean the dust in the encirclement area through regular cleaning and maintenance, which has certain market value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure decomposition of the present invention; Figure 3 It is a schematic cross-sectional view of the sealing ring body of the present invention; Figure 4 It is a schematic cross-sectional view of the locking ring of the present invention.

[0016] In the figure: 1. Sealing ring body; 11. Inner recess; 12. Fitting portion; 13. Main lip; 14. Auxiliary lip; 15. Encirclement area; 16. First placement opening; 17. Second placement opening; 18. Third placement opening; 19. Polyurethane reinforcement layer; 2. Annular reinforcement rib; 3. Elastic hollow ring; 4. Locking ring; 41. Block; 42. Slot. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] Example 1, please refer to the attached Figure 1-4 As shown, a sealing ring that is easy to assemble includes a sealing ring body 1, an inner recess 11 is provided at the middle position of the outer edge of the sealing ring body 1, and both sides of the inner recess 11 extend outward to form a matching portion 12, and the inner edge of the sealing ring body 1 is provided with a main lip 13 and an auxiliary lip 14 for dust prevention, and the main lip 13 and the auxiliary lip 14 cooperate to form an encirclement area 15 of a V-shaped structure, and the top of the V-shaped structure of the encirclement area 15 is biased toward one side of the main lip 13.

[0021] Through the above structure, an interference fit is achieved between the rotating shaft and the sealing ring. During the operation of the rotating shaft, it can effectively prevent external dust from entering between the rotating shaft and the sealing ring, effectively avoiding the wear caused by dust particles between the sealing ring and the rotating shaft, protecting the sealing ring, and increasing the service life. It can also effectively prevent the existing dust between the rotating shaft and the sealing ring from further entering, preventing the leakage of lubricating oil or the entry of external pollutants, and is convenient for subsequent regular cleaning and maintenance, and has certain market value.

[0022] The specific operation is as follows: first, check whether the surface appearance of the sealing ring body 1, the annular reinforcement rib 2, the elastic hollow ring 3 and the locking ring 4 is damaged, and stretch the sealing ring body 1 to check whether the elasticity and toughness are qualified; place the sealing ring body 1 with the first placement port 16 and the second placement port 17 side facing upward on the platform, and then insert the annular reinforcement rib 2 into the first placement port 16, so that the annular reinforcement rib 2 is tightly fitted with the lower end of the first placement port 16, and then insert the elastic hollow ring 3 into the second placement port 17; place the sealing ring body 1 with the third placement port 18 side facing upward on the platform, and then insert the locking ring 4 into the third placement port 18, and then install the sealing ring body 1 on the rotating shaft (the existing conventional rotating shaft, not drawn in the figure) with an interference fit, and adjust the fit between the block 41 and the slot 42 so that the auxiliary lip 14 for dust prevention is tightly fitted with the rotating shaft.

[0023] Example 2, please refer to the attached Figure 2 and 3 As shown, the main lip 13, the auxiliary lip 14 and the encircled area 15 are all provided with a polyurethane reinforcement layer 19. The polyurethane reinforcement layer 19 improves the wear resistance, oil resistance and elasticity of the sealing ring body 1. A first placement opening 16 is provided on one side of the sealing ring body 1, and the first placement opening 16 is narrow at the top and wide at the bottom. An annular reinforcement rib 2 is provided in the first placement opening 16, and the annular reinforcement rib 2 is tightly matched with the lower end of the first placement opening 16. The annular reinforcement rib 2 is used to increase the mechanical strength of the sealing ring, so that it is not easy to deform when subjected to axial or radial force, and the sealing performance is maintained. A second placement opening 17 is also provided on the sealing ring body 1. The second placement opening 17 is on the same side as the first placement opening 16. The second placement opening 17 is an L-shaped structure, and the second placement opening 17 is located outside the main lip 13. An elastic hollow ring 3 is provided in the second placement opening 17. The elastic hollow ring 3 increases the elasticity and resilience of the main lip 13, so that the sealing ring can better fit the rotating shaft when subjected to pressure.

[0024] Example 3, please refer to the attached Figure 3 and 4 As shown, a third placement opening 18 is provided on the other side of the sealing ring body 1, and the third placement opening 18 is located on the outside of the auxiliary lip 14. A locking ring 4 is embedded in the third placement opening 18. A card slot 42 and a card block 41 are respectively provided at both ends of the locking ring 4, and the card slot 42 and the card block 41 fit together. Through the locking ring 4, the tightness between the auxiliary lip 14 and the rotating shaft can be adjusted.

[0025] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A sealing ring that is easy to assemble, comprising a sealing ring body (1), characterized in that: An inner recess (11) is provided at the middle position of the outer edge of the sealing ring body (1), and the two sides of the inner recess (11) extend outward to form a matching portion (12); a main lip (13) and a secondary lip (14) for preventing dust are provided at the inner edge of the sealing ring body (1); the main lip (13) and the secondary lip (14) cooperate to form a V-shaped encirclement area (15), and the top of the V-shaped structure of the encirclement area (15) is biased toward one side of the main lip (13).

2. A sealing ring that is easy to assemble according to claim 1, characterized in that: A polyurethane reinforcement layer (19) is provided on the main lip (13), the auxiliary lip (14) and the encircled area (15).

3. A sealing ring that is easy to assemble according to claim 1, characterized in that: A first placement opening (16) is provided on one side of the sealing ring body (1), and the first placement opening (16) is narrow at the top and wide at the bottom. An annular reinforcement rib (2) is provided inside the first placement opening (16), and the annular reinforcement rib (2) is tightly matched with the lower end of the first placement opening (16).

4. A sealing ring that is easy to assemble according to claim 3, characterized in that: The sealing ring body (1) is also provided with a second placement opening (17), the second placement opening (17) being on the same side as the first placement opening (16), the second placement opening (17) being an L-shaped structure, and the second placement opening (17) being located outside the main lip (13), and an elastic hollow ring (3) being provided inside the second placement opening (17).

5. A sealing ring that is easy to assemble according to claim 4, characterized in that: A third placement opening (18) is provided on the other side of the sealing ring body (1), the third placement opening (18) is located outside the auxiliary lip portion (14), and a locking ring (4) is embedded in the third placement opening (18).

6. A sealing ring that is easy to assemble according to claim 5, characterized in that: A clamping groove (42) and a clamping block (41) are respectively provided at both ends of the locking ring (4), and the clamping groove (42) and the clamping block (41) fit together.

7. A method for assembling a sealing ring that is easy to assemble, characterized in that: The assembly is performed using a sealing ring that is easy to assemble according to any one of claims 1 to 6, and the assembly method specifically comprises the following steps: Step 1: First, check whether the surface appearance of the sealing ring body (1), the annular reinforcement rib (2), the elastic hollow ring (3) and the locking ring (4) are damaged, and stretch the sealing ring body (1) to check whether the elasticity and toughness are qualified; Step 2: Place the sealing ring body (1) on the platform with the first placement opening (16) and the second placement opening (17) facing upwards, and then insert the annular reinforcement rib (2) into the first placement opening (16) so that the annular reinforcement rib (2) is tightly fitted with the lower end of the first placement opening (16), and then insert the elastic hollow ring (3) into the second placement opening (17); Step 3: Place the sealing ring body (1) on the platform with the third placement opening (18) facing upwards, and then insert the locking ring (4) into the third placement opening (18). Then, install the sealing ring body (1) on the rotating shaft with an interference fit, and adjust the fit between the clamping block (41) and the clamping groove (42) so that the auxiliary lip (14) for dust prevention fits tightly with the rotating shaft.

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