Wear-resistant sealing structure of engine supercharger sealing element and forming process

Abstract

The invention relates to the field of sealing elements, in particular to a wear-resistant sealing structure of an engine supercharger sealing element and a forming process, the wear-resistant sealing structure comprises a shaft body, and one side of the outer surface of the shaft body is sleeved with a transmission element; the other side of the outer surface of the shaft body is sleeved with a shaft sleeve piece. A containing space is formed between the transmission part and the shaft sleeve part, and a sealing assembly is arranged in the containing space. The sealing assembly comprises a sealing piece with a Y-shaped longitudinal section, the two sides of the outer surface of the sealing piece are each sleeved with a third sealing ring, a first annular groove is formed in one side of the outer surface of the shaft body, a first sealing ring is arranged in the first annular groove in a sleeved mode, and a second annular groove is formed in the other side of the outer surface of the shaft body. The sealing element with the Y-shaped longitudinal section is adopted, the third sealing ring is combined, the sealing effect is effectively enhanced, the Y-shaped design enables the abrasion-resistant sealing structure to be better attached to the contact face when the abrasion-resistant sealing structure is pressed, and the leakage possibility is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of seals, and in particular to a wear-resistant sealing structure and a molding process of an engine supercharger seal. Background Art

[0002] The engine supercharger, also known as the engine intake supercharger, is a device used to increase the density of the engine intake air. It increases the pressure of the air before it enters the engine cylinder, allowing more air to fill the cylinder, thereby increasing the power of the engine. The engine supercharger seal is mainly used to prevent the lubricating oil in the supercharger intermediate body from leaking out, and can also effectively prevent the external high-pressure air from entering the supercharger intermediate body, thereby ensuring the stability of the internal pressure of the supercharger and maintaining its normal working state.

[0003] Existing sealing structures often use simple sealing rings or gaskets to prevent leakage of lubricating oil or gas. Existing sealing structures are prone to wear, aging, deformation and other problems under harsh environments such as long time, high speed, high temperature and high pressure, resulting in reduced sealing performance and even leakage, which not only affects the performance of the supercharger, but also has an adverse effect on the overall operation of the engine. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the sealing structure is prone to wear, aging, deformation and other problems under the harsh environment of long time, high speed, high temperature and high pressure, resulting in reduced sealing performance and even leakage, which not only affects the performance of the supercharger, but also has an adverse effect on the overall operation of the engine, thereby providing a wear-resistant sealing structure and molding process for an engine supercharger seal.

[0005] In order to solve the above technical problems, the present invention provides a wear-resistant sealing structure of an engine supercharger seal, comprising a shaft body, and a transmission member is sleeved on one side of the outer surface of the shaft body; The other side of the outer surface of the shaft body is respectively sleeved with a shaft sleeve; An accommodating space is formed between the transmission member and the shaft sleeve, and a sealing component is arranged in the accommodating space; The sealing component comprises a sealing member with a Y-shaped longitudinal section, and third sealing rings are sleeved on both sides of the outer surface of the sealing member.

[0006] Preferably, a first annular groove is provided on one side of the outer surface of the shaft, and a first sealing ring is sleeved inside the first annular groove.

[0007] Preferably, a second annular groove is provided on the other side of the outer surface of the shaft body, and a second sealing ring is sleeved inside the second annular groove.

[0008] Preferably, the transmission member comprises a bearing seat, and first accommodating grooves are provided on both sides of the bearing seat.

[0009] Preferably, a ball bearing is fixedly connected to the middle portion of the interior of the bearing seat, and a self-lubricating bearing is fixedly connected to the middle portion of the interior of the bearing seat, and the ball bearing and the self-lubricating bearing are both rotatably connected to the outer surface of the shaft body.

[0010] Preferably, the shaft assembly comprises a shaft sleeve, the outer surface of the shaft sleeve is fixed with a sleeve, and a second accommodating groove is provided between the sleeve and the shaft sleeve; The first accommodating groove and the second accommodating groove together constitute the accommodating space.

[0011] Preferably, the sealing member comprises a first supporting portion and a second supporting portion, the first supporting portion and the second supporting portion are fixedly connected, and the angle between the first supporting portion and the second supporting portion is 100 to 160°, a limiting portion is provided on the outer surface of the connection between the first supporting portion and the second supporting portion, and a convex ring is provided on the outer surfaces of the first supporting portion and the second supporting portion, an accommodating portion is provided between the convex ring and the limiting portion, and the third sealing ring is sleeved in the accommodating portion.

[0012] Preferably, inner walls of the first supporting portion and the second supporting portion are both provided with abutment portions, and graphite sealing rings are embedded in the abutment portions.

[0013] Preferably, a transmission housing is fixedly sleeved on the outer surface of the transmission member.

[0014] A molding process of a wear-resistant sealing structure of an engine supercharger seal comprises the following steps: S1. Prepare a shaft body and process a first annular groove and a second annular groove on its outer surface; S2, installing the first sealing ring and the second sealing ring into the first annular groove and the second annular groove respectively; S3, prepare the transmission parts, including the bearing seat and the ball bearing and self-lubricating bearing fixed inside, and sleeve the transmission parts on the middle part of the shaft body; S4, preparing a shaft kit, including a shaft sleeve and a sleeve, and forming a second accommodating groove therebetween, and then sleeve the shaft kit on both sides of the shaft body; Step 5: prepare a sealing assembly, including a sealing member with a Y-shaped longitudinal section and a third sealing ring, install the sealing member into the accommodation space formed between the transmission member and the shaft assembly, and sleeve the third sealing ring into the accommodation portion of the sealing member; Step 6: The transmission housing is fixedly mounted on the outer surface of the transmission part to complete the molding and assembly of the entire wear-resistant sealing structure.

[0015] By means of the above technical solution, the present invention provides a wear-resistant sealing structure and a molding process for an engine supercharger seal, which has at least the following beneficial effects: 1. The present invention effectively enhances the sealing effect by adopting a seal with a Y-shaped longitudinal cross-section, combined with the arrangement of a third sealing ring, a transmission member and a shaft kit. The Y-shaped design enables the wear-resistant sealing structure to better fit the contact surface when under pressure, thereby reducing the possibility of leakage. At the same time, the accommodating portion between the convex ring and the limiting portion provides a stable installation position for the third sealing ring, further improving the sealing performance.

[0016] 2. The graphite sealing rings embedded in the inner walls of the first support part and the second support part of the present invention enhance the wear resistance and durability of the seal. The graphite sealing rings are self-lubricating and wear-resistant, and can maintain a stable sealing effect in harsh environments such as long time, high speed, high temperature and high pressure, thereby extending the service life of the wear-resistant sealing structure.

[0017] 3. The present invention adopts a combined design of a bearing seat, a ball bearing and a self-lubricating bearing, which not only ensures the stability and reliability of the transmission, but also reduces friction and wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A local enlarged structural schematic diagram; Figure 3 It is a schematic diagram of the transmission structure of the present invention; Figure 4 This is a schematic diagram of the structure of the shaft kit of the present invention; Figure 5 It is a schematic longitudinal section diagram of the sealing structure of the present invention.

[0020] In the figure: 100, shaft body; 101, first annular groove; 102, first sealing ring; 103, second annular groove; 104, second sealing ring; 200, transmission member; 201, bearing seat; 202, first accommodating groove; 203, ball bearing; 204, self-lubricating bearing; 300, shaft kit; 301, shaft sleeve; 302, sleeve; 303, second accommodating groove; 400, sealing assembly; 401, sealing member; 4011, first supporting portion; 4012, second supporting portion; 4013, limiting portion; 4014, convex ring; 4015, accommodating portion; 4016, abutting portion; 4017, graphite sealing ring; 402, third sealing ring; 500, transmission housing. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0024] Existing sealing structures, especially those used in the sealing of high-performance mechanical parts such as engine superchargers, generally rely on simple components such as sealing rings or gaskets to achieve the function of preventing lubricating oil or gas leakage. These traditional sealing methods are usually competent for their tasks under normal operating conditions to ensure the stability and reliability of mechanical transmission. However, when faced with extreme working environments such as long time, high speed, high temperature and high pressure, these sealing structures often expose obvious limitations.

[0025] First, from the perspective of materials, traditional seals or gaskets are mostly made of rubber or metal. Although they show good elasticity and wear resistance at room temperature, their physical properties will change under high temperature conditions. Rubber materials are prone to hardening and brittleness due to heat aging, resulting in reduced sealing performance and even cracks and fractures. Although metal materials have good high temperature resistance, they are also prone to wear and deformation under high pressure and high speed, thus affecting the sealing effect.

[0026] Secondly, the long-term, high-speed operating environment places extremely high demands on the durability of the sealing structure. On the high-speed rotating shaft, the sealing ring or gasket needs to withstand huge centrifugal force, which will cause it to fall off or deform from the installation position, thereby destroying the sealing effect. In addition, long-term friction and wear will also accelerate the aging process of the sealing material, further reducing its sealing performance.

[0027] Furthermore, high temperature environment will also have an adverse effect on the stability of the sealing structure. Under high temperature, the thermal expansion coefficient of the sealing material will change, resulting in an increase in the sealing gap, which in turn causes leakage. At the same time, high temperature will also accelerate the oxidation and corrosion process of the sealing material, reducing its service life.

[0028] High-pressure environment affects the strength and sealing performance of the sealing structure. Under high pressure, the sealing ring or gasket needs to withstand huge extrusion pressure, causing it to deform or rupture. In addition, high pressure will increase the permeability of lubricating oil or gas, making the sealing structure more susceptible to erosion and damage.

[0029] When the sealing structure works in a harsh environment of long time, high speed, high temperature and high pressure, the above problems often occur at the same time, forming a vicious circle. The decline of sealing performance will not only lead to the leakage of lubricating oil or gas, but also increase the wear and friction of mechanical parts, reduce the efficiency and service life of the supercharger. At the same time, the leaked lubricating oil or gas will also cause pollution and damage to other parts of the engine, further affecting the overall operating performance and stability of the engine.

[0030] In order to solve the above technical problems, the present invention provides a wear-resistant sealing structure and a molding process for an engine supercharger seal. Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A local enlarged structural schematic diagram; Figure 3 It is a schematic diagram of the transmission structure of the present invention; Figure 4 This is a schematic diagram of the structure of the shaft kit of the present invention; Figure 5 It is a schematic longitudinal section diagram of the sealing structure of the present invention.

[0031] The present application is described below with reference to the accompanying drawings and specific embodiments: like Figure 1 and Figure 2 As shown, a wear-resistant sealing structure of an engine supercharger seal comprises a shaft body 100, a transmission member 200 is sleeved on one side of the outer surface of the shaft body 100; a shaft sleeve 300 is sleeved on the other side of the outer surface of the shaft body 100; a receiving space is formed between the transmission member 200 and the shaft sleeve 300, and a sealing assembly 400 is arranged in the receiving space; the sealing assembly 400 comprises a sealing member 401 with a Y-shaped longitudinal section, and a third sealing ring 402 is sleeved on both sides of the outer surface of the sealing member 401. The use of the sealing member 401 with a Y-shaped longitudinal section, combined with the arrangement of the third sealing ring 402, the transmission member 200 and the shaft sleeve 30, effectively enhances the sealing effect, and the Y-shaped design enables the wear-resistant sealing structure to better fit the contact surface of the transmission member 200 and the shaft sleeve 300 when subjected to pressure, thereby reducing the possibility of leakage.

[0032] like Figure 1 As shown, a first annular groove 101 is provided on one side of the outer surface of the shaft body 100, and a first sealing ring 102 is sleeved inside the first annular groove 101, and the outer surface of the first sealing ring 102 abuts against the inner wall of the sleeve 301. The first sealing ring 102 is installed in the first annular groove 101, and the outer surface of the first sealing ring 102 abuts tightly against the inner wall of the sleeve 301, forming an effective sealing barrier. , It can prevent lubricating oil or gas from leaking out from the gap between the shaft body 100 and the sleeve 301, thereby enhancing the sealing effect. The first sealing ring 102 is made of a material with strong wear resistance, and can maintain stable performance in a harsh environment of long time, high speed, high temperature and high pressure, reduce wear and aging, improve the wear resistance and durability of the wear-resistant sealing structure, and extend its service life.

[0033] like Figure 1 As shown, a second annular groove 103 is provided on the other side of the outer surface of the shaft body 100, and a second sealing ring 104 is sleeved inside the second annular groove 103. The second sealing ring 104 improves the sealing effect at the connection of the shaft body 100, and together with the first sealing ring 102, forms a double sealing barrier to prevent the leakage of lubricating oil or gas.

[0034] like Figure 3 As shown, the transmission member 200 includes a bearing seat 201, and first accommodating grooves 202 are provided on both sides of the bearing seat 201, so as to facilitate the installation of the sealing assembly 400 between the transmission member 200 and the shaft kit 300 to prevent lubricating oil or gas from leaking out from between the transmission member 200, the shaft kit 300 and the shaft body 100.

[0035] like Figure 1 and Figure 3As shown, a ball bearing 203 is fixedly connected to the middle of the bearing seat 201, and a self-lubricating bearing 204 is fixedly connected to the middle of the bearing seat 201. The ball bearing 203 and the self-lubricating bearing 204 are both rotatably connected to the outer surface of the shaft body 100. The ball bearing 203, with its rolling contact characteristics, can withstand large radial and axial loads to ensure the stability and reliability of the engine supercharger when running at high speed. The self-lubricating bearing 204 can achieve self-lubrication through its internal solid lubricant or transfer film in situations where it is impossible or difficult to lubricate, thereby protecting the shaft body 100 from wear.

[0036] like Figure 1 and Figure 4 As shown, the shaft kit 300 includes a shaft sleeve 301, a sleeve 302 is fixed on the outer surface of the shaft sleeve 301, and a second accommodating groove 300 is provided between the sleeve 302 and the shaft sleeve 301; the first accommodating groove 202 and the second accommodating groove 300 together constitute an accommodating space, which is convenient for installing the sealing assembly 400 between the transmission member 200 and the shaft kit 300 to prevent lubricating oil or gas from leaking out from between the transmission member 200, the shaft kit 300 and the shaft body 100.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, the seal 401 includes a first support portion 4011 and a second support portion 4012, the first support portion 4011 and the second support portion 4012 are fixedly connected, and the angle between the first support portion 4011 and the second support portion 4012 is 100-160°, and the outer surface of the connection between the first support portion 4011 and the second support portion 4012 is provided with a limiting portion 4013, and the outer surfaces of the first support portion 4011 and the second support portion 4012 are both provided with a convex ring 4014, and an accommodating portion 4015 is provided between the convex ring 4014 and the limiting portion 4013, and the third sealing ring 402 is sleeved in the accommodating portion 4015, and the third sealing ring 402 is sleeved in the accommodating portion 4015, and is in close contact with the inner walls of the bearing seat 201 and the sleeve 302 to form an effective sealing barrier.

[0038] like Figure 1 , Figure 2 and Figure 5 As shown, the inner walls of the first support portion 4011 and the second support portion 4012 are both provided with abutment portions 4016, and graphite sealing rings 4017 are embedded in the abutment portions 4016. The graphite sealing rings 4017 embedded in the inner walls of the first support portion 4011 and the second support portion 4012 enhance the wear resistance and durability of the seal. The graphite sealing rings 4017 have self-lubrication and wear resistance, and can maintain a stable sealing effect in a harsh environment of long time, high speed, high temperature and high pressure, thereby extending the service life of the wear-resistant sealing structure.

[0039] like Figure 1 As shown, the outer surface of the transmission member 200 is fixedly covered with a transmission housing 500. The transmission housing 500 provides a physical barrier for the transmission member 200, which can prevent external impurities from entering the interior of the wear-resistant sealing structure, thereby keeping it clean and in normal working condition.

[0040] The present technical solution proposes a molding process for a wear-resistant sealing structure of an engine supercharger seal, comprising the following steps: S1, prepare the shaft body 100, and process the first annular groove 101 and the second annular groove 103 on the outer surface thereof; S2, installing the first sealing ring 102 and the second sealing ring 104 into the first annular groove 101 and the second annular groove 103 respectively; S3, prepare the transmission member 200, including the bearing seat 201 and the ball bearing 203 and the self-lubricating bearing 204 fixed therein, and sleeve the transmission member 200 on the middle part of the shaft body 100; S4, prepare the shaft assembly 300, including the shaft sleeve 301 and the sleeve 302, and form a second accommodating groove 303 therebetween, and then sleeve the shaft assembly 300 on both sides of the shaft body 100; Step 5: Prepare a sealing assembly 400, including a sealing member 401 with a Y-shaped longitudinal section and a third sealing ring 402, install the sealing member 401 into the accommodation space formed between the transmission member 200 and the shaft sleeve 300, and sleeve the third sealing ring 402 into the accommodation portion 4015 of the sealing member 401; Step 6: The transmission housing 500 is fixedly mounted on the outer surface of the transmission member 200 to complete the molding and assembly of the entire wear-resistant sealing structure.

[0041] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant sealing structure of an engine supercharger seal, comprising a shaft body (100), characterized in that: A transmission member (200) is sleeved on one side of the outer surface of the shaft body (100); A shaft sleeve (300) is respectively sleeved on the other side of the outer surface of the shaft body (100); An accommodating space is formed between the transmission member (200) and the shaft sleeve (300), and a sealing assembly (400) is arranged in the accommodating space; The sealing assembly (400) comprises a sealing member (401) with a Y-shaped longitudinal cross-section, and third sealing rings (402) are sleeved on both sides of the outer surface of the sealing member (401).

2. The wear-resistant sealing structure of the engine supercharger seal according to claim 1, characterized in that: A first annular groove (101) is provided on one side of the outer surface of the shaft body (100), and a first sealing ring (102) is sleeved inside the first annular groove (101).

3. The wear-resistant sealing structure of the engine supercharger seal according to claim 2, characterized in that: A second annular groove (103) is provided on the other side of the outer surface of the shaft body (100), and a second sealing ring (104) is sleeved inside the second annular groove (103).

4. The wear-resistant sealing structure of the engine supercharger seal according to claim 3, characterized in that: The transmission member (200) comprises a bearing seat (201), and first accommodating grooves (202) are provided on both sides of the bearing seat (201).

5. The wear-resistant sealing structure of the engine supercharger seal according to claim 4, characterized in that: A ball bearing (203) is fixedly connected to the middle of the bearing seat (201), and a self-lubricating bearing (204) is fixedly connected to the middle of the bearing seat (201). Both the ball bearing (203) and the self-lubricating bearing (204) are rotatably connected to the outer surface of the shaft body (100).

6. The wear-resistant sealing structure and molding process of the engine supercharger seal according to claim 5, characterized in that: The shaft assembly (300) comprises a shaft sleeve (301), a sleeve (302) is fixedly mounted on the outer surface of the shaft sleeve (301), and a second accommodating groove (300) is provided between the sleeve (302) and the shaft sleeve (301); The first accommodating groove (202) and the second accommodating groove (300) together constitute the accommodating space.

7. The wear-resistant sealing structure of the engine supercharger seal according to claim 6, characterized in that: The sealing member (401) comprises a first supporting portion (4011) and a second supporting portion (4012), wherein the first supporting portion (4011) and the second supporting portion (4012) are fixedly connected, and an included angle between the first supporting portion (4011) and the second supporting portion (4012) is 100-160°, a limiting portion (4013) is provided on the outer surface of the connection between the first supporting portion (4011) and the second supporting portion (4012), a convex ring (4014) is provided on the outer surface of the first supporting portion (4011) and the second supporting portion (4012), an accommodating portion (4015) is provided between the convex ring (4014) and the limiting portion (4013), and the third sealing ring (402) is sleeved in the accommodating portion (4015).

8. The wear-resistant sealing structure of the engine supercharger seal according to claim 7, characterized in that: The inner walls of the first supporting portion (4011) and the second supporting portion (4012) are both provided with abutment portions (4016), and graphite sealing rings (4017) are embedded in the abutment portions (4016).

9. The wear-resistant sealing structure of the engine supercharger seal according to claim 1, characterized in that: A transmission housing (500) is fixedly sleeved on the outer surface of the transmission member (200).

10. A molding process for the wear-resistant sealing structure of an engine supercharger seal according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, preparing a shaft body (100), and machining a first annular groove (101) and a second annular groove (103) on the outer surface thereof; S2, installing the first sealing ring (102) and the second sealing ring (104) into the first annular groove (101) and the second annular groove (103) respectively; S3, preparing a transmission member (200), including a bearing seat (201) and a ball bearing (203) and a self-lubricating bearing (204) fixed therein, and sleeve-mounting the transmission member (200) on the middle portion of the shaft body (100); S4, preparing a shaft assembly (300), including a shaft sleeve (301) and a sleeve (302), and forming a second receiving groove (303) therebetween, and then sleeve-mounting the shaft assembly (300) on both sides of the shaft body (100); Step 5: preparing a sealing assembly (400), including a sealing member (401) with a Y-shaped longitudinal cross-section and a third sealing ring (402), installing the sealing member (401) into a receiving space formed between the transmission member (200) and the shaft assembly (300), and sleeve-mounting the third sealing ring (402) into a receiving portion (4015) of the sealing member (401); Step six: The transmission housing (500) is fixedly mounted on the outer surface of the transmission member (200) to complete the molding and assembly of the entire wear-resistant sealing structure.

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