Shaft type combined sealing structure

Abstract

The utility model provides a combined sealing structure for shafts, which relates to the technical field of shafts and comprises a main shaft, one end of the main shaft is connected with one end of a connecting shaft, a sealing mechanism is arranged on the surface of one end of the main shaft, and an auxiliary mechanism is arranged on the inner wall of a clamping groove arranged at the other end of the main shaft. According to the utility model, the excellent sealing performance of the system in a high-pressure or high-temperature environment is ensured by the tight connection and design of each component through the installed sealing mechanism, and the leakage of fluid or gas is prevented. The threaded connection of the fixing ring and the connecting ring provides stable structural support, can bear the force generated when the main shaft rotates or moves, and keeps the relative positions of the parts stable. The main shaft is allowed to rotate or move through the design of the movable ring, meanwhile, the relative position of components can be adjusted through the gasket to adapt to movement or pressure changes, and therefore the long-term reliability of a sealing system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of shafts, in particular to a shaft combined sealing structure. Background Art

[0002] Shaft combined seal structures are usually used in axial applications that need to prevent liquid or gas leakage, such as hydraulic systems, pump equipment, engines and mechanical transmission systems.

[0003] However, in the prior art, some existing shafts usually use liquid (such as oil or hydraulic oil) to form a liquid sealing layer at the shaft seal to prevent leakage when sealing. However, liquid sealing needs to ensure that sufficient liquid pressure is formed at the shaft seal to resist the pressure inside the system or prevent external media from entering. This requires that the pressure pipeline of the liquid in the system must be stable, otherwise it may cause seal failure or leakage. At the same time, liquid sealing usually requires a certain amount of liquid flow to maintain the sealing effect. When stationary or rotating at a low speed, the liquid may not form an effective sealing layer, which will affect the reliability of the seal. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and provide a shaft-type combined sealing structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a shaft-type combined sealing structure, comprising a main shaft, one end of which is connected to one end of a connecting shaft, a sealing mechanism is arranged on the surface of one end of the main shaft, and an auxiliary mechanism is arranged on the inner wall of a slot opened at the other end of the main shaft;

[0006] The sealing mechanism includes a static ring, a gasket, a fitting, a fixed ring, a connecting ring, a fixing part, a dynamic ring, a washer, a sealing shell and a sealing plate. The surface of the static ring is provided with a gasket, the surface of the gasket is provided with a fitting part, the surface of the fitting part is provided with a fixed ring, a connecting ring is provided with a connecting ring on one side of the static ring, the inner walls of multiple thread grooves formed on the fixing ring and the connecting ring are both provided with fixing parts, the surface of the main shaft is provided with a dynamic ring, the inner wall of the slot formed on one side of the dynamic ring is provided with a gasket, a sealing shell is provided on one side of the connecting ring, and a sealing plate is provided on the inner wall of the sealing shell.

[0007] As a preferred implementation, the inner wall of the stationary ring is connected to the surface of one end of the main shaft, and the inner wall of the gasket is fixedly connected to the surface of one side of the stationary ring.

[0008] As a preferred implementation, the inner wall of the fitting is fixedly connected to the surface of the gasket, and the inner wall of the fixing ring is fixedly connected to the surface of the fitting.

[0009] As a preferred embodiment, the inner wall of the connecting ring is fixedly connected to the surface of the stationary ring away from the gasket, and the threads provided on the surfaces of the multiple fixing parts are respectively threadedly connected to the inner walls of the thread grooves provided on the corresponding fixing ring and the connecting ring.

[0010] As a preferred embodiment, the inner wall of the dynamic ring is connected to the surface of one end of the main shaft, one side of the gasket is fixedly connected to the inner wall of the groove opened on one side of the dynamic ring, one side of the sealing shell is fixedly connected to one side of the connecting ring, and the sealing plate surface is fixedly connected to the inner wall of the sealing shell.

[0011] As a preferred embodiment, the auxiliary mechanism includes an oil inlet pipe, a sealing plug, and a pull ring. One end of the oil inlet pipe is fixedly connected to the inner wall of a groove opened on the surface of one end of the main shaft, and the other end surface of the oil inlet pipe is fixedly connected to the inner wall of a groove opened on one side of the sealing shell. The surface of the sealing plug is slidably connected to the inner wall of the oil inlet pipe, and the two ends of the pull ring are respectively fixedly connected to both sides of the sealing plug surface.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] The utility model ensures excellent sealing performance of the system in high-pressure or high-temperature environments through the installed sealing mechanism, the tight connection and design of each component, and prevents fluid or gas leakage. The threaded connection of the fixed ring and the connecting ring provides a stable structural support, which can withstand the force when the main shaft rotates or moves, and keep the relative positions of the components stable. The design of the moving ring allows the main shaft to rotate or move, and the presence of the gasket can adjust the relative positions of the components to adapt to movement or pressure changes, thereby ensuring the long-term reliability of the sealing system. The presence of the sealing shell and the sealing plate not only provides additional sealing protection, but also prevents the external environment from interfering with and damaging the internal components, thereby extending the service life of the entire system. The fittings match the appearance of the static ring and the connecting ring, ensuring accuracy and stability during the assembly process, thereby maximizing the working efficiency of the overall sealing system.

[0014] The installed auxiliary mechanism can not only effectively maintain the seal and prevent liquid or gas leakage, but also the sealing plug is usually designed to adapt to and fill the uneven surface of the oil inlet pipe, thereby improving the sealing effect. At the same time, the two ends of the pull ring are fixedly connected to the two sides of the sealing plug surface, which is also convenient for the staff to pull out the sealing plug and add lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a shaft-type combined sealing structure provided by the utility model;

[0016] Figure 2 A structural schematic diagram of a shaft-type combined sealing structure provided by the utility model;

[0017] Figure 3 A structural schematic diagram of a shaft-type combined sealing structure provided by the utility model;

[0018] Figure 4 The utility model provides a structural schematic diagram of a shaft-type combined sealing structure.

[0019] In the figure: 1. main shaft; 2. connecting shaft; 3. sealing mechanism; 31. stationary ring; 32. gasket; 33. fitting; 34. fixing ring; 35. connecting ring; 36. fixing part; 37. moving ring; 38. gasket; 39. sealing shell; 310. sealing plate; 4. auxiliary mechanism; 41. oil inlet pipe; 42. sealing plug; 43. pull ring. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the overall concept of the utility model, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0021] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0022] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0025] Example 1

[0026] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a shaft-type combined sealing structure, comprising a main shaft (1), one end of the main shaft (1) is connected to one end of a connecting shaft (2), a sealing mechanism (3) is arranged on the surface of one end of the main shaft (1), and an auxiliary mechanism (4) is arranged on the inner wall of a slot opened at the other end of the main shaft (1);

[0027] The sealing mechanism (3) comprises a stationary ring (31), a gasket (32), a fitting member (33), a fixed ring (34), a connecting ring (35), a fixing member (36), a moving ring (37), a washer (38), a sealing shell (39), and a sealing plate (310). The surface of the stationary ring (31) is provided with a gasket (32), the surface of the gasket (32) is provided with a fitting member (33), the surface of the fitting member (33) is provided with a stationary ring (34), a connecting ring (35) is provided on one side of the surface of the stationary ring (31), the inner walls of a plurality of thread grooves provided on the fixing ring (34) and the connecting ring (35) are both provided with fixing members (36), the surface of the main shaft (1) is provided with a moving ring (37), the inner wall of a slot provided on one side of the moving ring (37) is provided with a gasket (38), a sealing shell (39) is provided on one side of the connecting ring (35), and the inner wall of the sealing shell (39) is provided with a sealing plate (310).

[0028] In this embodiment, the inner wall of the stationary ring (31) is connected to the surface of one end of the main shaft (1), the inner wall of the gasket (32) is fixedly connected to the surface of one side of the stationary ring (31), the inner wall of the fitting (33) is fixedly connected to the surface of the gasket (32), the inner wall of the fixing ring (34) is fixedly connected to the surface of the fitting (33), the inner wall of the connecting ring (35) is fixedly connected to the surface of one side of the stationary ring (31) away from the gasket (32), and the threads provided on the surfaces of the plurality of fixing members (36) are respectively threadedly connected to the corresponding fixing rings (34). The inner wall of the threaded groove opened by the connecting ring (35), the inner wall of the moving ring (37) is connected to the surface of one end of the main shaft (1), one side of the gasket (38) is fixedly connected to the inner wall of the slot opened on one side of the moving ring (37), one side of the sealing shell (39) is fixedly connected to one side of the connecting ring (35), and the surface of the sealing plate (310) is fixedly connected to the inner wall of the sealing shell (39), and the above components are matched; the tight connection and design of each component ensure the excellent sealing performance of the system in a high pressure or high temperature environment to prevent fluid or gas leakage. The threaded connection between the fixing ring (34) and the connecting ring (35) provides a stable structural support, which can withstand the force when the main shaft (1) rotates or moves, and keeps the relative position of the components stable. The design of the moving ring (37) allows the main shaft (1) to rotate or move, and the presence of the gasket (38) can adjust the relative position of the components to adapt to movement or pressure changes, thereby ensuring the long-term reliability of the sealing system. The presence of the sealing shell (39) and the sealing plate (310) not only provides additional sealing protection, but also prevents the external environment from interfering with and damaging the internal components, thereby extending the service life of the entire system. The fitting (33) is in conformity with the outer shape of the stationary ring (31) and the connecting ring (35), ensuring accuracy and stability during the assembly process, thereby maximizing the working efficiency of the overall sealing system.

[0029] Example 2

[0030] like Figure 1-Figure 2 As shown, the auxiliary mechanism (4) includes an oil inlet pipe (41), a sealing plug (42), and a pull ring (43); one end of the oil inlet pipe (41) is fixedly connected to the inner wall of a groove opened on the surface of one end of the main shaft (1); the other end surface of the oil inlet pipe (41) is fixedly connected to the inner wall of a groove opened on one side of the sealing shell (39); the surface of the sealing plug (42) is slidably connected to the inner wall of the oil inlet pipe (41); and the two ends of the pull ring (43) are respectively fixedly connected to the two sides of the surface of the sealing plug (42).

[0031] In this embodiment, the surface of the sealing plug (42) is slidably connected to the inner wall of the oil inlet pipe (41). This combination can not only effectively maintain the seal and prevent liquid or gas leakage, but also the sealing plug (42) is usually designed to adapt to and fill the uneven surface of the oil inlet pipe (41), thereby improving the sealing effect. At the same time, the two ends of the pull ring (43) are fixedly connected to the two sides of the surface of the sealing plug (42), which also facilitates the staff to pull out the sealing plug (42) to add lubricating oil.

[0032] Working principle:

[0033] like Figure 1-Figure 4 As shown,

[0034] The stationary ring (31) is located at one end of the main shaft (1) and is tightly connected to the surface of the main shaft (1). It serves as a basic structure for fixing other components and providing support; the gasket (32) is located on one side of the stationary ring (31), and the gasket (32) has the function of filling gaps or providing additional support while ensuring that the sealing performance is not affected; the inner surface of the fitting (33) is fixedly connected to the gasket (32), and this component is designed to fit the outer shape of the stationary ring (31) and the connecting ring (35) to ensure the accuracy and stability of the assembly; the inner surface of the fixed ring (34) is fixedly connected to the outer surface of the fitting (33) and is connected to the thread groove of the connecting ring (35) through a thread; the inner surface of the connecting ring (35) is fixedly connected to one side of the stationary ring (31), and it matches the thread groove of the fixed ring (34) and is connected through a thread to ensure the integrity and tightness of the entire sealing system; the inner surface of the dynamic ring (37) is connected to the end of the main shaft (1) and allows the main shaft (1) to rotate or move. The moving ring (37) has slots in which gaskets (38) are fixed to enhance sealing performance and adjust the position of components; one side of the gasket (38) is fixedly connected to the inner wall of the slot of the moving ring (37), which helps to maintain sealing performance and adjust the relative position of components to cope with changes in movement or pressure; one side of the sealing shell (39) is fixedly connected to the outer side of the connecting ring (35), which is designed to accommodate the entire sealing system and prevent the external environment from interfering with the internal components; the surface of the sealing plate (310) is fixedly connected to the inner wall of the sealing shell (39), which is used to close the internal space of the entire device, ensure that fluid or gas does not leak and maintain the operating stability of the system.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0036] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, 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 shaft-type combined sealing structure, comprising a main shaft, characterized in that: One end of the main shaft is connected to one end of the connecting shaft, a sealing mechanism is provided on the surface of one end of the main shaft, and an auxiliary mechanism is provided on the inner wall of the slot opened at the other end of the main shaft; The sealing mechanism includes a static ring, a gasket, a fitting, a fixed ring, a connecting ring, a fixing part, a dynamic ring, a washer, a sealing shell and a sealing plate. The surface of the static ring is provided with a gasket, the surface of the gasket is provided with a fitting part, the surface of the fitting part is provided with a fixed ring, a connecting ring is provided with a connecting ring on one side of the static ring, the inner walls of multiple thread grooves formed on the fixing ring and the connecting ring are both provided with fixing parts, the surface of the main shaft is provided with a dynamic ring, the inner wall of the slot formed on one side of the dynamic ring is provided with a gasket, a sealing shell is provided on one side of the connecting ring, and a sealing plate is provided on the inner wall of the sealing shell.

2. A shaft-type combined sealing structure according to claim 1, characterized in that: The inner wall of the stationary ring is connected to the surface of one end of the main shaft, and the inner wall of the gasket is fixedly connected to the surface of one side of the stationary ring.

3. The shaft combined sealing structure according to claim 1, characterized in that: The inner wall of the fitting is fixedly connected to the surface of the gasket, and the inner wall of the fixing ring is fixedly connected to the surface of the fitting.

4. The shaft combined sealing structure according to claim 1, characterized in that: The inner wall of the connecting ring is fixedly connected to the surface of the stationary ring away from the gasket, and the threads provided on the surfaces of the plurality of fixing parts are respectively threadedly connected to the inner walls of the thread grooves provided on the corresponding fixing ring and the connecting ring.

5. The shaft combined sealing structure according to claim 1, characterized in that: The inner wall of the dynamic ring is connected to the surface of one end of the main shaft, one side of the gasket is fixedly connected to the inner wall of the slot opened on one side of the dynamic ring, one side of the sealing shell is fixedly connected to one side of the connecting ring, and the sealing plate surface is fixedly connected to the inner wall of the sealing shell.

6. The shaft combined sealing structure according to claim 1, characterized in that: The auxiliary mechanism includes an oil inlet pipe, a sealing plug, and a pull ring. One end of the oil inlet pipe is fixedly connected to the inner wall of a groove opened on the surface of one end of the main shaft, and the other end surface of the oil inlet pipe is fixedly connected to the inner wall of a groove opened on one side of the sealing shell. The surface of the sealing plug is slidably connected to the inner wall of the oil inlet pipe, and the two ends of the pull ring are respectively fixedly connected to both sides of the sealing plug surface.

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