Three-channel mechanical sealing slip ring

Abstract

The utility model relates to the technical field of three-channel sealing, in particular to a three-channel mechanical sealing slip ring, and provides the following scheme aiming at the defects that in the prior art, detection and safety early warning cannot be conveniently carried out on the slip ring, so that an operator cannot conveniently find out a sealing failure sign in time, and sudden serious leakage can be caused. A first rotor air inlet, a second rotor air inlet and a third rotor air inlet are formed in the main shaft; the first shell is installed on the main shaft, a second shell is installed on the first shell, a third shell is installed on the second shell, a fourth shell is installed on the third shell, and leakage holes are formed in the first shell and the third shell correspondingly. And therefore, an operator can conveniently and timely find out a sealing failure sign, and the situation of sudden serious leakage can be avoided.

Description

Technical Field

[0001] This application relates to the field of three-way sealing technology, and in particular to a three-way mechanical seal slip ring. Background Technology

[0002] The three-channel mechanical seal slip ring is a composite device that integrates mechanical seal technology and multi-channel transmission function. It can achieve the sealed transmission of three independent media (such as hydraulic oil, coolant, gas, etc.) under rotating conditions. It has the ability to prevent leakage and synchronously transmit media. Its core is to ensure sealing through the end face sealing structure of the dynamic and static rings, while using the layered channel design to achieve synchronous transmission of multiple media.

[0003] However, the existing three-way mechanical seal slip ring is not convenient for detection and safety warning, making it difficult for operators to detect signs of seal failure in a timely manner, which can lead to sudden and serious leaks. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the difficulty in detecting and providing safety warnings, which makes it difficult for operators to promptly identify signs of seal failure and can lead to sudden and serious leaks. Therefore, this invention proposes a three-channel mechanical seal slip ring.

[0005] The three-channel mechanical seal slip ring provided in this application adopts the following technical solution:

[0006] A three-way mechanical seal slip ring, comprising:

[0007] The main shaft is provided with a first rotor air inlet, a second rotor air inlet and a third rotor air inlet;

[0008] A first outer shell is mounted on the main shaft, and a second outer shell is mounted on the first outer shell. A third outer shell is mounted on the second outer shell, and a fourth outer shell is mounted on the third outer shell. Both the first and third outer shells are provided with leakage holes, and the second and third outer shells are respectively provided with a first stator air outlet, a second stator air outlet, and a third stator air outlet.

[0009] A connecting component is mounted on the second housing.

[0010] Furthermore, a first stationary ring is installed on both the first and third housings, and a second stationary ring is installed on the second housing.

[0011] Furthermore, the connecting assembly includes a connector, which is mounted on a second housing. The second housing is fitted with a grommet screw, and the main shaft has a threaded hole that mates with the grommet screw. The second housing is fitted with a pin, and the main shaft has a pin hole that mates with the pin.

[0012] Furthermore, a first O-ring is installed on the second housing, and a second O-ring is installed on the third housing. A spring is installed on the third housing, and a moving ring and a second rubber gasket are installed on the first, second, third, and fourth housings.

[0013] Furthermore, a first rubber pad and a crimping component are mounted on the spindle.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] The two leakage holes can serve as a detection and safety warning system. They allow trace amounts of media to be discharged to external monitoring points, making it easier for operators to detect signs of seal failure in a timely manner and avoid sudden and serious leaks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the principle block structure of a three-channel mechanical seal slip ring according to Embodiment 1 of this application;

[0017] Figure 2 This is a three-dimensional structural diagram of a three-way mechanical seal slip ring according to Embodiment 1 of this application;

[0018] Figure 3 This is a schematic diagram of the spring structure of a three-way mechanical seal slip ring according to Embodiment 1 of this application.

[0019] Reference numerals: 1. Main shaft; 2. First housing; 3. Second housing; 4. Second stationary ring; 5. Third housing; 6. Fourth housing; 7. Connecting piece; 8. Pin; 9. First O-ring; 10. Second O-ring; 11. Spring; 12. Moving ring; 13. First stationary ring; 14. Second rubber gasket; 15. First rubber gasket; 16. Press-fit part; 17. Leakage hole; 18. First rotor air inlet; 19. Second rotor air inlet; 20. Third rotor air inlet; 21. First stator air outlet; 22. Second stator air outlet; 23. Third stator air outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1

[0022] Reference Figures 1-3 A three-way mechanical seal slip ring, comprising:

[0023] Main shaft 1, with a first rotor air inlet 18, a second rotor air inlet 19 and a third rotor air inlet 20;

[0024] The first outer shell 2 is mounted on the main shaft 1, and the second outer shell 3 is mounted on the first outer shell 2. The third outer shell 5 is mounted on the second outer shell 3, and the fourth outer shell 6 is mounted on the third outer shell 5. Both the first outer shell 2 and the third outer shell 5 are provided with leakage holes 17, and the second outer shell 3 and the third outer shell 5 are respectively provided with a first stator air outlet 21, a second stator air outlet 22 and a third stator air outlet 23.

[0025] The connecting component is mounted on the second housing 3.

[0026] Specifically, a first stationary ring 13 is installed on both the first outer shell 2 and the third outer shell 5, and a second stationary ring 4 is installed on the second outer shell 3.

[0027] Specifically, the connecting assembly includes a connector 7, which is mounted on the second housing 3. The second housing 3 is fitted with a grommet screw, and the main shaft 1 has a threaded hole that mates with the grommet screw. The second housing 3 is fitted with a pin 8, and the main shaft 1 has a pin hole that mates with the pin 8.

[0028] Specifically, a first O-ring 9 is installed on the second outer shell 3, a second O-ring 10 is installed on the third outer shell 5, a spring 11 is installed on the third outer shell 5, and a moving ring 12 and a second rubber gasket 14 are installed on the first outer shell 2, the second outer shell 3, the third outer shell 5 and the fourth outer shell 6.

[0029] Specifically, a first rubber pad 15 and a crimping part 16 are installed on the spindle 1.

[0030] The implementation principle of a three-channel mechanical seal slip ring according to an embodiment of this application is as follows: During use, the first housing 2, second housing 3, third housing 5, and fourth housing 6 are manually connected to the corresponding threaded holes on the main shaft 1 by rotating the nut screw. Simultaneously, the pin 8 is manually pushed, locking it to the corresponding pin hole on the main shaft 1. The nut screw and pin 8 lock the first housing 2, second housing 3, third housing 5, and fourth housing 6 onto the main shaft 1, compressing multiple second rubber gaskets 14. The multiple second rubber gaskets 14 are then deformed under pressure, achieving a sealing effect. Simultaneously, because the multiple second rubber gaskets 14 are compressed, the friction increases, keeping the first stationary ring 13 relatively stationary with respect to the first housing 2 and third housing 5. The spring 11... Multiple rotating rings 12 are provided with elasticity to ensure continuous contact between the end faces of the rotating rings 12 and the end faces of the first stationary ring 13 and the second stationary ring 4, forming a mechanical seal to prevent leakage. The rotating rings 12 are driven to rotate with the main shaft 1 via pins 8, maintaining relative stillness between the rotating rings 12 and the main shaft 1. Each rotating ring 12 contains a first O-ring 9 for sealing. Since the rotating rings 12 are relatively still with the main shaft 1, the first O-ring 9 primarily provides a static seal, resulting in a longer service life. Two leakage holes 17 serve as detection and safety warning points, allowing trace amounts of media to be directionally discharged to external monitoring points, facilitating timely detection of seal failure by operators and preventing sudden, severe leaks. The dynamic seal between the sliding ring loops is mainly achieved by the mechanical seal, while the static seal is achieved by the O-rings. The mechanical seal and the O-rings form three independent chambers.

[0031] Example 2

[0032] The difference between this embodiment and Embodiment 1 is that a stepped layered dynamic ring group layout is adopted, and the radial pressure distribution of each channel sealing surface is optimized by the annular boss, eliminating the uneven wear phenomenon caused by the uneven pressure gradient in the traditional design.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A three-channel mechanical seal slip ring, characterized in that: include: The main shaft (1) is provided with a first rotor air inlet (18), a second rotor air inlet (19) and a third rotor air inlet (20); A first outer shell (2) is mounted on the main shaft (1), and a second outer shell (3) is mounted on the first outer shell (2), a third outer shell (5) is mounted on the second outer shell (3), and a fourth outer shell (6) is mounted on the third outer shell (5). Both the first outer shell (2) and the third outer shell (5) are provided with leakage holes (17), and the second outer shell (3) and the third outer shell (5) are respectively provided with a first stator air outlet (21), a second stator air outlet (22) and a third stator air outlet (23). The connecting component is mounted on the second housing (3).

2. The three-channel mechanical seal slip ring according to claim 1, characterized in that: A first stationary ring (13) is installed on both the first outer shell (2) and the third outer shell (5), and a second stationary ring (4) is installed on the second outer shell (3).

3. The three-channel mechanical seal slip ring according to claim 2, characterized in that: The connecting assembly includes a connector (7), which is mounted on a second housing (3). The second housing (3) is fitted with a grommet screw, and the main shaft (1) has a threaded hole that mates with the grommet screw. The second housing (3) is fitted with a pin (8), and the main shaft (1) has a pin hole that mates with the pin (8).

4. The three-channel mechanical seal slip ring according to claim 3, characterized in that: The second outer shell (3) is equipped with a first O-ring (9), and the third outer shell (5) is equipped with a second O-ring (10). The third outer shell (5) is equipped with a spring (11), and the first outer shell (2), the second outer shell (3), the third outer shell (5) and the fourth outer shell (6) are all equipped with a moving ring (12) and a second rubber gasket (14).

5. A three-channel mechanical seal slip ring according to claim 4, characterized in that: The spindle (1) is equipped with a first rubber pad (15) and a crimping part (16).

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