High-pressure rotating oil seal with spring compensation mechanism

Abstract

The utility model relates to the related technical field of oil seals, one embodiment of the disclosure provides a high-pressure rotating oil seal with a spring compensation mechanism, the high-pressure rotating oil seal comprises a main oil seal layer and an auxiliary oil seal layer, the auxiliary oil seal layer is arranged outside the main oil seal layer, a compensation assembly is arranged in the main oil seal layer, and the spring compensation mechanism is arranged in the main oil seal layer. The splicing assembly is arranged between the main oil seal layer and the auxiliary oil seal layer, the compensation assembly comprises an annular groove, the annular groove is formed in the periphery of the surface of the main oil seal layer, a plurality of outer ring protruding layers are arranged on the periphery of the inner surface of the annular groove, a plurality of inner ring protruding layers are arranged on the periphery of the inner surface of the annular groove, and the outer ring protruding layers and the inner ring protruding layers are arranged on the periphery of the inner surface of the annular groove. And a spring is connected between the inner ring convex layer and the outer ring convex layer. By means of the technical scheme, the technical problem that in the prior art, a common oil seal maintains sealing only by means of elasticity of materials of the common oil seal, a gap is easily generated between the oil seal and a rotating component under high pressure, and medium leakage is caused is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of oil seal technology, and more specifically, to a high-pressure rotary oil seal with a spring compensation mechanism. Background Technology

[0002] An oil seal is a common term for general sealing components; simply put, it's a seal for lubricating oil. It's a mechanical component used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to any liquid substance in general). It isolates the lubricated parts from the output parts in a transmission system, preventing lubricating oil leakage. Static seals and dynamic seals (generally reciprocating motion) use oil seals. In many industrial scenarios, such as hydraulic transmission systems and rotating machinery, the sealing performance of high-pressure rotary oil seals is crucial.

[0003] Traditional oil seals often fail under complex operating conditions such as high pressure and high speed. On the one hand, ordinary oil seals rely solely on the elasticity of their material to maintain a seal. Under high pressure, gaps can easily form between the oil seal and rotating parts, leading to media leakage. On the other hand, as equipment operates for longer periods, oil seal wear intensifies, and sealing performance gradually declines.

[0004] Therefore, improvements have been made to address the aforementioned issues. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a high-pressure rotary oil seal with a spring compensation mechanism, which solves the technical problem that ordinary oil seals in the prior art rely solely on the elasticity of their own material to maintain sealing, and under high pressure, gaps easily form between the oil seal and the rotating parts, leading to media leakage.

[0006] According to one aspect, at least one embodiment of this disclosure provides a high-pressure rotary oil seal with a spring compensation mechanism, comprising:

[0007] A main oil seal and a secondary oil seal, wherein the secondary oil seal is disposed outside the main oil seal;

[0008] Compensation component, wherein the compensation component is disposed in the main oil seal layer;

[0009] A splicing assembly is disposed between the main oil seal layer and the secondary oil seal layer;

[0010] The compensation component includes an annular groove, which is formed around the surface of the main oil seal layer. A plurality of outer ring protrusions are arranged around the inner surface of the annular groove, and a plurality of inner ring protrusions are arranged around the inner surface of the annular groove. A spring is connected between the inner ring protrusions and the outer ring protrusions.

[0011] As a further technical solution, a number of insertion holes are opened around the surface of the main oil seal layer, and a sealing cap is inserted into the insertion hole. The sealing cap is attached to the surface of the main oil seal layer. The outer ring surface of the main oil seal layer protrudes upward around the circumference, and the inner ring surface of the main oil seal layer slopes inward around the circumference.

[0012] As a further technical solution, the splicing assembly includes a wrapping groove, which is formed around the inner surface of the secondary oil seal layer. The main oil seal layer is embedded in the wrapping groove, and a retaining groove is formed around the surface of the sealing cap.

[0013] As a further technical solution, one end of the secondary oil seal layer is bent inward, the bent part of the secondary oil seal layer is inserted into the slot, and a filling groove is formed around the outer surface of the secondary oil seal layer, and a number of mating sleeve blocks are provided in the filling groove.

[0014] As a further technical solution, a support layer is inserted into the filling groove, and a number of sleeve grooves are opened around the side surface of the support layer. The sleeve grooves are fitted onto the outside of the docking sleeve block, and a number of installation grooves are opened around the surface of the filling groove.

[0015] As a further technical solution, the mounting groove corresponds to the position of the docking sleeve block, an anti-detachment block is inserted in the mounting groove, one end of the anti-detachment block is inserted into the docking sleeve block, and grease grooves are opened around the inner ring surface of the auxiliary oil seal layer and the support layer.

[0016] As a further technical solution, the thickness of the support layer is greater than the width of the filling groove.

[0017] As a further technical solution, both the outer ring protrusion and the inner ring protrusion have inclined structural surfaces.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] 1. In this disclosure, the beneficial effect of the compensation component is that the spring in the annular groove cooperates with the inner and outer ring convex layers to effectively compensate for the sealing gap caused by wear of the main oil seal layer. The sealing cover prevents impurities from entering the annular groove, ensuring the normal operation of the spring. The special structural design of the main oil seal layer makes it fit more tightly with the equipment, enhances the sealing performance, reduces the risk of medium leakage, and extends the service life of the oil seal.

[0020] 2. In this disclosure, the splicing component has significant advantages. The wrapping groove and slot design ensures a tight connection between the main and auxiliary oil seal layers, preventing relative displacement. The mating sleeve block, support layer, and anti-detachment block work together to ensure the stability of the support layer. The wear of the auxiliary oil seal layer can be compensated by replacing the support layer. The grease groove is filled with lubricating grease to reduce internal component friction, reduce wear, and further improve sealing performance and overall stability of the oil seal. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0023] Figure 2 This is an isometric drawing of the present disclosure;

[0024] Figure 3 This is an isometric sectional view of the present disclosure;

[0025] Figure 4 This is another isometric view of the present disclosure;

[0026] Figure 5 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0027] Figure 6 Appendix to this disclosure Figure 3 Enlarged view of part B in the middle section;

[0028] In the diagram: 1. Main oil seal layer; 2. Secondary oil seal layer; 3. Compensation component; 3-1. Annular groove; 3-2. Outer ring protrusion; 3-3. Inner ring protrusion; 3-4. Spring; 3-5. Insertion hole; 3-6. Sealing cap; 4. Splicing component; 4-1. Wrapping groove; 4-2. Slot; 4-3. Filling groove; 4-4. Connecting sleeve block; 4-5. Support layer; 4-6. Sleeve groove; 4-7. Mounting groove; 4-8. Anti-detachment block; 4-9. Grease groove. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-6 As shown, a high-pressure rotary oil seal with a spring compensation mechanism is illustrated in one embodiment of this disclosure, comprising:

[0036] The main oil seal layer 1 and the secondary oil seal layer 2 are disposed outside the main oil seal layer 1;

[0037] Compensation component 3 is installed in the main oil seal layer 1;

[0038] Splicing component 4 is disposed between the main oil seal layer 1 and the secondary oil seal layer 2;

[0039] The compensation component 3 includes an annular groove 3-1, which is formed around the surface of the main oil seal layer 1. Several outer ring protrusions 3-2 are arranged around the inner surface of the annular groove 3-1, and several inner ring protrusions 3-3 are arranged around the inner surface of the annular groove 3-1. A spring 3-4 connects the inner ring protrusions 3-3 and the outer ring protrusions 3-2. Several insertion holes 3-5 are formed around the surface of the main oil seal layer 1, and a sealing cap 3-6 is inserted into the insertion hole 3-5. The sealing cap 3-6 is attached to the surface of the main oil seal layer 1. The outer ring surface of the main oil seal layer 1 protrudes upward, and the inner ring surface of the main oil seal layer 1 slopes inward.

[0040] In some examples, to compensate for the sealing performance of the main oil seal 1, a compensation component 3 is designed. This component includes an annular groove 3-1 formed around the surface of the main oil seal 1. Several outer ring protrusions 3-2 and inner ring protrusions 3-3 are respectively arranged around the two surfaces of the annular groove 3-1. Each corresponding inner ring protrusion 3-3 is connected to an outer ring protrusion 3-2 by a spring 3-4. The spring 3-4 increases the supporting force on the main oil seal 1, making the inner ring of the main oil seal 1 fit more closely to the equipment and preventing wear. It can also push the main oil seal through its elasticity. To compensate for changes in the sealing gap caused by wear and other factors and maintain a good sealing effect, the main oil seal layer 1 has several insertion holes 3-5 around its surface. A sealing cap 3-6 is inserted into the insertion holes 3-5. The sealing cap 3-6 fits against the surface of the main oil seal layer 1. The sealing cap 3-6 can prevent impurities, dust, etc. from entering the annular groove 3-1 and affecting the normal operation of the spring 3-4, thus ensuring the stability and reliability of the compensation component 3. The outer ring surface of the main oil seal layer 1 is raised upwards, and the inner ring surface is inclined inwards to transition, which can better fit with the equipment and enhance the sealing effect.

[0041] like Figures 1-6 As shown, this embodiment proposes a splicing component 4 including a wrapping groove 4-1, which is formed around the inner surface of the secondary oil seal layer 2. The main oil seal layer 1 is embedded in the wrapping groove 4-1. A retaining groove 4-2 is formed around the surface of the sealing cap 3-6. One end of the secondary oil seal layer 2 is bent inward, and the bent part of the secondary oil seal layer 2 is inserted into the retaining groove 4-2. A filling groove 4-3 is formed around the outer surface of the secondary oil seal layer 2. Several mating sleeves 4-4 are provided in the filling groove 4-3. A support layer 4-5 is inserted, and several grooves 4-6 are opened around the side surface of the support layer 4-5. The grooves 4-6 are fitted onto the outside of the mating sleeve block 4-4. Several installation grooves 4-7 are opened around the surface of the filling groove 4-3. The installation grooves 4-7 correspond to the positions of the mating sleeve block 4-4. An anti-detachment block 4-8 ​​is inserted into the installation groove 4-7. One end of the anti-detachment block 4-8 ​​is inserted into the mating sleeve block 4-4. Grease grooves 4-9 are opened around the inner ring surface of the auxiliary oil seal layer 2 and the support layer 4-5.

[0042] In some examples, to achieve a reliable connection between the main oil seal layer 1 and the secondary oil seal layer 2 and further enhance sealing and structural stability, a splicing component 4 is designed. This component includes a wrapping groove 4-1 formed around the inner surface of the secondary oil seal layer 2, connecting the main oil seal layer 1 and the secondary oil seal layer 2 into one unit. A retaining groove 4-2 is formed around the surface of the sealing cap 3-6. One end of the secondary oil seal layer 2 is bent inward and inserted into the retaining groove 4-2, further enhancing the tightness of the connection between the main oil seal layer 1 and the secondary oil seal layer 2 and preventing relative displacement during use. A filling groove 4-3 is formed around the outer surface of the secondary oil seal layer 2, and several mating sleeves 4-4 are set within the filling groove 4-3. A support layer 4-5 is inserted into the filling groove 4-3, and several sleeve grooves 4-6 are formed around its side surface and fitted onto the outside of the mating sleeves 4-4, making... The support layer 4-5 can be stably fixed on the secondary oil seal layer 2. Several mounting grooves 4-7 are opened around the surface of the filling groove 4-3, corresponding to the position of the mating sleeve block 4-4. The anti-detachment block 4-8 ​​inserted in the mounting groove 4-7 is inserted into the mating sleeve block 4-4 at one end. This design effectively prevents the mating sleeve block 4-4 and the support layer 4-5 from falling off during use. The thicker support layer 4-5 fills the filling groove 4-3, causing the secondary oil seal layer 2 to bulge. When the secondary oil seal layer 2 wears, a thicker support layer 4-5 can be replaced to further support the secondary oil seal layer 2, which can play a compensating role. The grease grooves 4-9 opened around the inner ring surface of the secondary oil seal layer 2 and the support layer 4-5 can be used to fill lubricating grease, which can enhance the sealing performance, reduce friction between internal components, reduce wear, and extend the service life of the secondary oil seal layer 2.

[0043] For example, such as Figure 5 As shown, the thickness of the support layer 4-5 is greater than the width of the filling groove 4-3.

[0044] In some examples, the secondary oil seal layer 2 can expand after being inserted into the filling groove 4-3 by using a thicker support layer 4-5, thereby increasing the fit with the equipment.

[0045] For example, such as Figure 4 As shown, the surfaces of both the outer ring protrusion 3-2 and the inner ring protrusion 3-3 are inclined structural surfaces.

[0046] In some examples, tilting the structural surface can make the structure more stable, avoid excessive compression of the springs 3-4, and make the structure more reasonable.

[0047] In actual use: First, connect the main oil seal layer 1 and the secondary oil seal layer 2 through the splicing component 4. Embed the main oil seal layer 1 into the wrapping groove 4-1 of the secondary oil seal layer 2. Insert the bent part of the secondary oil seal layer 2 into the slot 4-2 of the sealing cover 3-6. Install the mating sleeve block 4-4 and the support layer 4-5 in the filling groove 4-3 and fix them with the anti-detachment block 4-8. Fill the grease groove 4-9 with lubricating grease. Install the assembled oil seal on the equipment. When the equipment is running, if the main oil seal layer 1 wears and causes the sealing gap to change, the spring 3-4 of the compensation component 3 provides support to the main oil seal layer 1 in the annular groove 3-1 through the outer ring protrusion 3-2 and the inner ring protrusion 3-3 to maintain the sealing effect. When the secondary oil seal layer 2 wears, a larger support layer 4-5 can be replaced for expansion compensation.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A high-pressure rotary oil seal with a spring compensation mechanism, characterized in that, include: A main oil seal (1) and a secondary oil seal (2), wherein the secondary oil seal (2) is disposed outside the main oil seal (1); Compensation component (3), wherein the compensation component (3) is disposed in the main oil seal layer (1); A splicing assembly (4) is disposed between the main oil seal layer (1) and the secondary oil seal layer (2); The compensation component (3) includes an annular groove (3-1), which is formed around the surface of the main oil seal layer (1). A plurality of outer ring protrusions (3-2) are provided around the inner surface of the annular groove (3-1), and a plurality of inner ring protrusions (3-3) are provided around the inner surface of the annular groove (3-1). A spring (3-4) is connected between the inner ring protrusions (3-3) and the outer ring protrusions (3-2).

2. The high-pressure rotary oil seal with spring compensation mechanism according to claim 1, characterized in that, The main oil seal layer (1) has several insertion holes (3-5) around its surface. A sealing cap (3-6) is inserted into each insertion hole (3-5). The sealing cap (3-6) is attached to the surface of the main oil seal layer (1). The outer ring surface of the main oil seal layer (1) protrudes upwards, and the inner ring surface of the main oil seal layer (1) slopes inwards.

3. The high-pressure rotary oil seal with spring compensation mechanism according to claim 2, characterized in that, The splicing component (4) includes a wrapping groove (4-1), which is formed around the inner surface of the secondary oil seal layer (2). The main oil seal layer (1) is embedded in the wrapping groove (4-1), and a slot (4-2) is formed around the surface of the sealing cap (3-6).

4. The high-pressure rotary oil seal with spring compensation mechanism according to claim 3, characterized in that, One end of the secondary oil seal layer (2) is bent inward, and the bent part of the secondary oil seal layer (2) is inserted into the slot (4-2). A filling groove (4-3) is opened around the outer surface of the secondary oil seal layer (2), and a plurality of mating sleeve blocks (4-4) are provided in the filling groove (4-3).

5. The high-pressure rotary oil seal with spring compensation mechanism according to claim 4, characterized in that, A support layer (4-5) is inserted into the filling groove (4-3). Several sleeve grooves (4-6) are opened around the side surface of the support layer (4-5). The sleeve grooves (4-6) are fitted onto the outside of the docking sleeve block (4-4). Several mounting grooves (4-7) are opened around the surface of the filling groove (4-3).

6. The high-pressure rotary oil seal with spring compensation mechanism according to claim 5, characterized in that, The mounting groove (4-7) corresponds to the docking sleeve block (4-4) in position. An anti-detachment block (4-8) is inserted into the mounting groove (4-7). One end of the anti-detachment block (4-8) is inserted into the docking sleeve block (4-4). Grease grooves (4-9) are opened around the inner ring surface of the auxiliary oil seal layer (2) and the support layer (4-5).

7. The high-pressure rotary oil seal with spring compensation mechanism according to claim 5, characterized in that, The thickness of the support layer (4-5) is greater than the width of the filling groove (4-3).

8. The high-pressure rotary oil seal with spring compensation mechanism according to claim 1, characterized in that, The surfaces of the outer ring protrusion (3-2) and the inner ring protrusion (3-3) are both inclined structural surfaces.

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