Mechanical sealing element capable of preventing displacement

Abstract

The utility model relates to the technical field of mechanical sealing elements, in particular to a displacement-preventing mechanical sealing element which comprises a rotating shaft, a sealing ring is connected to the outer wall of the rotating shaft in a sliding mode, a sleeve shell is fixedly connected to the outer wall of the sealing ring, a first gasket is fixedly connected to one side of the outer wall of the sealing ring, and the first gasket is fixedly connected to the interior of the sleeve shell. And a bolt is in threaded connection with the interior of the sleeve shell, a protective shell is in threaded connection with the outer wall of the bolt, a nut is in threaded connection with the outer wall of the bolt, and a second gasket is fixedly connected with the other side of the outer wall of the sealing ring. According to the utility model, the sealing ring is arranged in the sleeve shell, the sealing ring is sleeved on the outer wall of the rotating shaft for protection, meanwhile, the gasket I and the gasket II are combined to play a dual protection role, dust, impurities and the like are prevented from entering the equipment through dual protection at the left end and the right end, and meanwhile, the sleeve shell and the protective shell are connected through a plurality of bolts and nuts; and later disassembly and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal capable of preventing displacement. Background Art

[0002] Anti-displacement mechanical seals are critical components used to prevent fluid leakage and protect mechanical systems, and are widely used in equipment such as pumps, compressors, and engines. They effectively prevent fluid leakage through the gap between rotating and stationary parts through a tight fit. Their anti-displacement design allows them to withstand shaft rotation and vibration, ensuring stability under various operating conditions. Many models are designed for ease of installation, with standardized dimensions for simplified maintenance and replacement, and they operate reliably under high-temperature and high-pressure conditions.

[0003] In the prior art, conventional mechanical seals are usually fixed to the outer wall of the equipment's shaft for protection. During the operation of the equipment, the shaft will rotate, thereby driving the parts inside the mechanical seal to rotate. The rotation process can easily cause the seal to shake and shift in position, thereby affecting the protection effect. At the same time, the seal cannot be disassembled, repaired or replaced, and long-term use can easily affect the life of the seal. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a mechanical seal that prevents displacement.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a mechanical seal for preventing displacement, comprising a rotating shaft, a sealing ring being slidably connected to the outer wall of the rotating shaft, a sleeve being fixedly connected to the outer wall of the sealing ring, a gasket being fixedly connected to one side of the outer wall of the sealing ring, the gasket being fixedly connected to the inside of the sleeve, a bolt being threadedly connected to the inner wall of the sleeve, a protective shell being threadedly connected to the outer wall of the bolt, a nut being threadedly connected to the outer wall of the bolt, and a gasket being fixedly connected to the other side of the outer wall of the sealing ring.

[0006] As a further description of the above technical solution: a sealing ring 1 is provided inside the protective shell, and the sealing ring 1 is provided on the right side inside the protective shell; a sealing ring 2 is provided inside the protective shell, and the sealing ring 2 is provided on the left side inside the protective shell.

[0007] As a further description of the above technical solution: the outer wall of the rotating shaft is fixedly connected to an inner sealing ring 1, the outer wall of the inner sealing ring 1 is provided with a ferrule 1, the ferrule 1 is fixedly connected to the inner wall of the protective shell, and the interior of the inner sealing ring 1 is provided with a steel ball 1.

[0008] As a further description of the above technical solution: the outer wall of the rotating shaft is fixedly connected to the inner sealing ring 2, the outer wall of the inner sealing ring 2 is provided with a ferrule 2, the ferrule 2 is fixedly connected to the inner wall of the protective shell, and the interior of the inner sealing ring 2 is provided with a steel ball 2.

[0009] As a further description of the above technical solution: the internal thread of the protective shell is connected to a threaded shaft 1, and the threaded shaft 1 is threadedly connected to the inside of the rotating shaft.

[0010] As a further description of the above technical solution: the internal thread of the protective shell is connected to a second threaded shaft, and the second threaded shaft is threadedly connected to the inside of the rotating shaft.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the existing technology, this mechanical seal that prevents displacement sets a sealing ring inside the casing, and puts the sealing ring on the outer wall of the rotating shaft for protection. At the same time, it combines gasket 1 and gasket 2 to achieve double protection. The double protection at the left and right ends prevents dust and impurities from entering the interior of the equipment. At the same time, the casing and the protective shell are connected by multiple bolts and nuts, which is convenient for later disassembly and maintenance.

[0013] 2. Compared with the prior art, this mechanical seal for preventing displacement fixes the inner sealing ring 1 and the inner sealing ring 2 through the outer wall of the rotating shaft, places the steel ball 1 and the steel ball 2 inside the inner sealing ring 1 and the inner sealing ring 2, and then clamps the ferrule 1 and the ferrule 2 on the outer walls of the steel ball 1 and the steel ball 2 respectively, fixes the protective shell on the outer walls of the ferrule 1 and the ferrule 2, and at the same time clamps the sealing ring 1 and the sealing ring 2 on the left and right ends of the protective shell for protection, thereby achieving multiple protection effects on the rotating shaft, and at the same time utilizes the steel ball 1 and the steel ball 2 to prevent the inner sealing ring 1 and the inner sealing ring 2 from displacement during rotation, and then combines the auxiliary fixation of the threaded shaft 1 and the threaded shaft 2 to achieve the effect of auxiliary prevention of displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of a mechanical seal for preventing displacement proposed by the present utility model;

[0015] Figure 2 This is a structural diagram of a housing of a mechanical seal that prevents displacement proposed by the present invention;

[0016] Figure 3 This is a structural diagram of a protective shell of a mechanical seal that prevents displacement proposed by the utility model;

[0017] Figure 4 This is a cross-sectional view of a mechanical seal for preventing displacement proposed by the present invention.

[0018] Legend:

[0019] 1. Rotating shaft; 2. Sealing ring; 3. Housing; 4. Gasket 1; 5. Bolt; 6. Nut; 7. Protective housing; 8. Gasket 2; 9. Sealing ring 1; 10. Sealing ring 2; 11. Inner sealing ring 1; 12. Cutting ring 1; 13. Steel ball 1; 14. Inner sealing ring 2; 15. Cutting ring 2; 16. Steel ball 2; 17. Threaded shaft 1; 18. Threaded shaft 2. DETAILED DESCRIPTION

[0020] Reference Figure 1-4 The utility model provides a mechanical seal to prevent displacement: it includes a rotating shaft 1, the outer wall of the rotating shaft 1 is slidably connected to a sealing ring 2, and one end of the outer wall of the rotating shaft 1 is protected by the sealing ring 2, the outer wall of the sealing ring 2 is fixedly connected to a casing 3, one side of the outer wall of the sealing ring 2 is fixedly connected to a gasket 4, and the gasket 4 is fixedly connected to the inside of the casing 3, and the gasket 4 prevents dust from entering the inside of the equipment through the gap of the outer wall of the sealing ring 2, the inner thread of the casing 3 is connected to a bolt 5, the outer wall of the bolt 5 is threadedly connected to a protective shell 7, and the outer wall of the bolt 5 is threadedly connected to a nut 6, through multiple bolts 5 and nuts The mother 6 connects the sleeve shell 3 and the protective shell 7. The other side of the outer wall of the sealing ring 2 is fixedly connected with a gasket 2 8. The gasket 2 8 prevents dust from entering the interior of the device through the gap between the sealing ring 2 and the sealing ring 1 9. The interior of the protective shell 7 is provided with a sealing ring 19, and the sealing ring 19 is arranged on the right side of the interior of the protective shell 7. The interior of the protective shell 7 is provided with a sealing ring 2 10, and the sealing ring 2 10 is arranged on the left side of the interior of the protective shell 7. The two ends of the protective shell 7 are sealed by the sealing ring 1 9 and the sealing ring 2 10. The sealing ring 1 9 and the sealing ring 2 10 are both made of silicone and can be easily inserted into the interior of the protective shell 7.

[0021] The outer wall of the rotating shaft 1 is fixedly connected to an inner sealing ring 11, and the outer wall of the inner sealing ring 11 is provided with a ferrule 12, and the ferrule 12 is fixedly connected to the inner wall of the protective shell 7. A steel ball 13 is provided inside the inner sealing ring 11, and the steel ball 13 limits the position between the inner sealing ring 11 and the ferrule 12 to prevent the inner sealing ring 11 from being displaced. The outer wall of the rotating shaft 1 is fixedly connected to an inner sealing ring 2 14, and the outer wall of the inner sealing ring 2 14 is provided with a ferrule 2 15, and the ferrule 2 15 is fixedly connected to the inner wall of the protective shell 7. A steel ball 2 16 is provided inside the inner sealing ring 2 14, and the steel ball 2 16 limits the position between the inner sealing ring 2 14 and the ferrule 2 15 to prevent the inner sealing ring 2 14 from being displaced.

[0022] The internal thread connection of the protective shell 7 is connected to a threaded shaft 17, and the threaded shaft 17 is threadedly connected to the inside of the rotating shaft 1. The internal thread connection of the protective shell 7 is connected to a threaded shaft 2 18, and the threaded shaft 2 18 is threadedly connected to the inside of the rotating shaft 1. The protective shell 7 is fixed to the outer wall of the rotating shaft 1 by the threaded shaft 17 and the threaded shaft 2 18, which plays a detachable role and can also help prevent the displacement of the protective shell 7.

[0023] Working principle: When in use, connect the right end of the rotating shaft 1 to the output end of the pump body or other equipment, fix the inner sealing ring 11 and the inner sealing ring 2 14 to the outer wall of the rotating shaft 1, fill the inner sealing ring 11 and the inner sealing ring 2 14 with steel balls 13 and 16, and then clamp the ferrule 12 and the ferrule 2 15 on the outer walls of the steel balls 13 and 16 respectively, so that the ferrule 12 fits with the inner sealing ring 11, and the ferrule 2 15 fits with the inner sealing ring 2 14. When the rotating shaft 1 drives the inner sealing ring 11 and the inner sealing ring 2 14 to rotate, the inner sealing ring 11 and the inner sealing ring 2 14 are fixed to the outer wall of the steel balls 13 and 16 respectively. During the process, the inner sealing ring 11 can be limited by the steel ball 13 combined with the ferrule 12, and the inner sealing ring 2 14 can be limited by the steel ball 2 16 combined with the ferrule 2 15. Then the protective shell 7 is put on the outer wall of the ferrule 12 and the ferrule 2 15, and the sealing ring 1 9 and the sealing ring 2 10 are installed inside the protective shell 7. The inner sealing ring 11 and the inner sealing ring 2 14 play a protective role in the middle position, and the two ends of the protective shell 7 are sealed by the sealing ring 1 9 and the sealing ring 2 10 to prevent dust from entering the protective shell 7. 1 and 18 are fixed to the interior of the protective shell 7 and the rotating shaft 1 respectively, and the protective shell 7 and the rotating shaft 1 are connected to assist in preventing displacement. Then the gasket 2 is placed on the outer wall of the sealing ring 9, and the sealing ring 2 and the gasket 1 are fixed to the inside of the shell 3. At the same time, the sealing ring 2 drives the shell 3 to slide on the outer wall of the rotating shaft 1, and the left side of the sealing ring 2 is fitted with the right outer wall of the gasket 2 8. A plurality of bolts 5 are passed through the interior of the shell 3 and the interior of the protective shell 7, and fixed by nuts 6, which is convenient for later disassembly and maintenance, solving the problem that the mechanical seal in the prior art cannot be disassembled. At the same time, the gasket 2 8 is used to prevent dust from entering through the gap between the sealing ring 2 and the sealing ring 9, and the gasket 4 is used to prevent dust and impurities from entering the interior of the equipment through the gap between the sealing ring 2 and the shell 3, thereby achieving the effect of multiple protection. Finally, the end of the protective shell 7 and the sealing ring 2 10 is connected to the interior of the equipment, and the sealing ring 2 10 is used to prevent dust or impurities inside the equipment from entering the interior of the protective shell 7.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, 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 mechanical seal for preventing displacement, comprising a rotating shaft (1), characterized in that: The outer wall of the rotating shaft (1) is slidably connected to a sealing ring (2), the outer wall of the sealing ring (2) is fixedly connected to a casing (3), one side of the outer wall of the sealing ring (2) is fixedly connected to a gasket 1 (4), the gasket 1 (4) is fixedly connected to the inside of the casing (3), the inside of the casing (3) is threadedly connected to a bolt (5), the outer wall of the bolt (5) is threadedly connected to a protective casing (7), the outer wall of the bolt (5) is threadedly connected to a nut (6), and the other side of the outer wall of the sealing ring (2) is fixedly connected to a gasket 2 (8).

2. The mechanical seal for preventing displacement according to claim 1, characterized in that: A sealing ring (9) is provided inside the protective shell (7), and the sealing ring (9) is provided on the right side inside the protective shell (7). A sealing ring (10) is provided inside the protective shell (7), and the sealing ring (10) is provided on the left side inside the protective shell (7).

3. The mechanical seal for preventing displacement according to claim 1, characterized in that: The outer wall of the rotating shaft (1) is fixedly connected to an inner sealing ring (11), the outer wall of the inner sealing ring (11) is provided with a clamping sleeve (12), the clamping sleeve (12) is fixedly connected to the inner wall of the protective shell (7), and a steel ball (13) is provided inside the inner sealing ring (11).

4. The mechanical seal for preventing displacement according to claim 1, characterized in that: The outer wall of the rotating shaft (1) is fixedly connected with an inner sealing ring (14), the outer wall of the inner sealing ring (14) is provided with a second ferrule (15), the second ferrule (15) is fixedly connected to the inner wall of the protective shell (7), and the interior of the inner sealing ring (14) is provided with a second steel ball (16).

5. The mechanical seal for preventing displacement according to claim 1, characterized in that: The internal thread of the protective shell (7) is connected to a threaded shaft (17), and the threaded shaft (17) is threadedly connected to the interior of the rotating shaft (1).

6. The mechanical seal for preventing displacement according to claim 5, characterized in that: The interior of the protective shell (7) is threadedly connected to a second threaded shaft (18), and the second threaded shaft (18) is threadedly connected to the interior of the rotating shaft (1).

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