High-durability mechanical sealing ring

Abstract

The utility model discloses a highly durable mechanical sealing ring in the technical field of mechanical sealing rings, which comprises a shell and a rotating sleeve, the rotating sleeve is rotatably connected to the inner cavity of the shell, the periphery of the outer side edge of the top of the rotating sleeve is rotatably connected with a second ball, the top of the rotating sleeve is fixedly connected with a first sealing ring, and the second ball is rotatably connected with a second sealing ring. The inner side wall of the rotating sleeve is fixedly connected with second sealing rings, the second sealing rings are sequentially arranged from top to bottom, the lower side of the outer side wall of the rotating sleeve is fixedly connected with a third sealing ring, the bottom of an inner cavity of the shell is rotationally connected with a circular ring, and a first ball is rotationally connected between the circular ring and the shell. The high-durability mechanical sealing ring is reasonable in structural design, the sealing performance of the mechanical sealing ring can be improved, the mechanical sealing ring can be prevented from being abraded, and the service life of the mechanical sealing ring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical sealing rings, in particular to a high-durability mechanical sealing ring. Background Art

[0002] Mechanical seals, also known as face seals, are shaft seals used in rotating fluid machinery, such as centrifugal pumps, centrifuges, reactors, compressors and other equipment. Since the transmission shaft runs through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment. The medium in the equipment leaks out through the gap. If the pressure inside the equipment is lower than the atmospheric pressure, air leaks into the equipment. Therefore, there must be a shaft seal to prevent leakage. There are many types of shaft seals. Since mechanical seals have the advantages of less leakage and long life, mechanical seals are the most important shaft seals in these equipment in the world.

[0003] The existing mechanical sealing rings have problems of poor sealing and low durability when in use. In addition, during the operation of a general mechanical sealing ring, the dynamic ring and the static ring will rub against each other, and long-term mutual friction will cause wear of the dynamic ring and the static ring, which will in turn lead to a reduction in the sealing performance of the mechanical sealing ring. For this reason, we have proposed a highly durable mechanical sealing ring. Utility Model Content

[0004] The utility model aims to provide a highly durable mechanical sealing ring to solve the problems in the above background technology that the existing mechanical sealing rings have poor sealing performance, low durability, and wear and tear caused by mutual friction between the dynamic ring and the static ring.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly durable mechanical sealing ring, comprising an outer shell and a rotating sleeve, the rotating sleeve being rotatably connected to the inner cavity of the outer shell, a second ball being rotatably connected to the top outer edge of the rotating sleeve, a first sealing ring being fixedly connected to the top of the rotating sleeve, a second sealing ring being fixedly connected to the inner wall of the rotating sleeve, and the second sealing rings being arranged in sequence from top to bottom, and a third sealing ring being fixedly connected to the lower side of the outer wall of the rotating sleeve.

[0006] As a further description of the above technical solution:

[0007] A circular ring is rotatably connected to the bottom of the inner cavity of the shell, and a first ball is rotatably connected between the circular ring and the shell.

[0008] As a further description of the above technical solution:

[0009] The top of the circular ring is fixedly connected with a spring, and the spring is sleeved on the outer side wall of the rotating sleeve.

[0010] As a further description of the above technical solution:

[0011] The right side wall of the shell is fixedly connected with an oil inlet pipe.

[0012] As a further description of the above technical solution:

[0013] The left side wall of the shell is fixedly connected with an oil outlet pipe.

[0014] As a further description of the above technical solution:

[0015] The first sealing ring, the second sealing ring and the third sealing ring are all made of rubber material.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The highly durable mechanical seal ring seals the gap between the rotating sleeve and the rotating shaft by providing a second seal ring inside the rotating sleeve, and then seals the upper gap between the rotating sleeve and the outer shell by providing a first seal ring, thereby preventing liquid from entering between the outer shell and the rotating sleeve, and finally seals the lower gap between the rotating sleeve and the outer shell by a third seal ring, thereby preventing liquid from penetrating through a triple sealing method, thereby improving the sealing performance of the mechanical seal ring.

[0018] 2. The highly durable mechanical seal ring is provided with a first ball and a second ball, so that when the rotating sleeve and the ring rotate, the friction between the outer shell and the rotating sleeve and the ring can be reduced, and then the friction of the outer shell, the rotating sleeve and the ring is preliminarily reduced, and then the lubricating oil is input through the oil inlet pipe, so that the lubricating oil enters the outer shell, and then the friction between the outer shell and the rotating sleeve and the ring is further reduced by the lubricating oil, thereby avoiding wear of the outer shell, the rotating sleeve and the ring, thereby avoiding wear of the mechanical seal ring and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a high-durability mechanical sealing ring proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of a high-durability mechanical sealing ring proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of a top view and cross-sectional structure of a high-durability mechanical seal ring proposed by the utility model;

[0022] Figure 4 A high-durability mechanical seal ring proposed by the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0023] In the figure: 100, housing; 110, ring; 111, first ball; 120, spring; 130, oil inlet pipe; 140, oil outlet pipe; 200, rotating sleeve; 210, second ball; 220, first sealing ring; 230, second sealing ring; 240, third sealing ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a highly durable mechanical seal ring, which can improve the sealing performance of the mechanical seal ring, and can avoid wear of the mechanical seal ring and extend its service life. Figure 1-4 , comprising a housing 100 and a rotating sleeve 200;

[0028] Please refer again Figure 1-4 , the housing 100 is used to install the rotating sleeve 200;

[0029] See also Figure 2-4 The rotating sleeve 200 is rotatably connected to the inner cavity of the shell 100. The outer edge of the top of the rotating sleeve 200 is rotatably connected with a second ball 210. The second ball 210 is used to reduce the friction between the rotating sleeve 200 and the shell 100. The top of the rotating sleeve 200 is fixedly connected with a first sealing ring 220. The first sealing ring 220 is used to seal the upper gap between the rotating sleeve 200 and the shell 100. The inner wall of the rotating sleeve 200 is fixedly connected with a second sealing ring 230. The second sealing ring 230 is used to seal the gap between the rotating sleeve 200 and the rotating shaft. The second sealing rings 230 are arranged in sequence from top to bottom, and the lower outer wall of the rotating sleeve 200 is fixedly connected with a first sealing ring 220. The third sealing ring 240 is fixedly connected to the rotating sleeve 200 and the outer shell 100. The third sealing ring 240 is used to seal the lower gap between the rotating sleeve 200 and the outer shell 100. By providing a second sealing ring 230 inside the rotating sleeve 200, the gap between the rotating sleeve 200 and the rotating shaft is sealed. Then, by providing a first sealing ring 220, the upper gap between the rotating sleeve 200 and the outer shell 100 is sealed, thereby preventing liquid from entering between the outer shell 100 and the rotating sleeve 200. Finally, the third sealing ring 240 is used to seal the lower gap between the rotating sleeve 200 and the outer shell 100, thereby preventing liquid from penetrating through a triple sealing method.

[0030] In summary, the sealing performance of the mechanical sealing ring is improved.

[0031] See also Figure 2 A ring 110 is rotatably connected to the bottom of the inner cavity of the shell 100 , and a first ball 111 is rotatably connected between the ring 110 and the shell 100 , and a spring 120 can be installed through the ring 110 .

[0032] Please refer again Figure 2 A spring 120 is fixedly connected to the top of the ring 110 , and the spring 120 is sleeved on the outer wall of the rotating sleeve 200 . The rotating sleeve 200 can be pushed upward by the spring 120 , so that the rotating sleeve 200 fits with the housing 100 .

[0033] See also Figure 1-3 The right side wall of the housing 100 is fixedly connected with an oil inlet pipe 130 , through which lubricating oil can be input.

[0034] Please refer again Figure 1-3 The left side wall of the housing 100 is fixedly connected with an oil outlet pipe 140, through which the lubricating oil is output.

[0035] Please refer again Figure 1The first sealing ring 220, the second sealing ring 230 and the third sealing ring 240 are all made of rubber material. By adopting rubber material, the first sealing ring 220, the second sealing ring 230 and the third sealing ring 240 have elasticity, thereby being able to better improve the sealing performance.

[0036] In summary, the wear of the mechanical sealing ring can be avoided and its service life can be extended.

[0037] During specific use, a person skilled in the art will first pass the rotating shaft through the inner cavity of the rotating sleeve 200 to complete the installation of the mechanical sealing ring. Then, during the operation of the mechanical sealing ring, the lubricating oil is input between the outer shell 100 and the rotating sleeve 200 through the oil inlet pipe 130, so that the lubricating oil lubricates the contact positions of the outer shell 100, the rotating sleeve 200 and the ring 110, thereby reducing the friction. At the same time, the first ball 111 and the second ball 210 will further reduce the friction. Finally, the gap between the outer shell 100, the rotating sleeve 200 and the rotating shaft is sealed by the first sealing ring 220, the second sealing ring 230 and the third sealing ring 240.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A highly durable mechanical sealing ring, characterized in that: The invention comprises an outer shell (100) and a rotating sleeve (200), wherein the rotating sleeve (200) is rotatably connected to the inner cavity of the outer shell (100), a second ball (210) is rotatably connected to the outer edge of the top of the rotating sleeve (200), a first sealing ring (220) is fixedly connected to the top of the rotating sleeve (200), a second sealing ring (230) is fixedly connected to the inner wall of the rotating sleeve (200), and the second sealing rings (230) are arranged in sequence from top to bottom, and a third sealing ring (240) is fixedly connected to the lower side of the outer wall of the rotating sleeve (200).

2. A high-durability mechanical seal ring according to claim 1, characterized in that: A circular ring (110) is rotatably connected to the bottom of the inner cavity of the shell (100), and a first rolling ball (111) is rotatably connected between the circular ring (110) and the shell (100).

3. A high-durability mechanical seal ring according to claim 2, characterized in that: A spring (120) is fixedly connected to the top of the circular ring (110), and the spring (120) is sleeved on the outer wall of the rotating sleeve (200).

4. A high-durability mechanical seal ring according to claim 1, characterized in that: The right side wall of the housing (100) is fixedly connected with an oil inlet pipe (130).

5. The high-durability mechanical seal ring according to claim 1, characterized in that: The left side wall of the housing (100) is fixedly connected with an oil outlet pipe (140).

6. A high-durability mechanical seal ring according to claim 1, characterized in that: The first sealing ring (220), the second sealing ring (230) and the third sealing ring (240) are all made of rubber material.

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