Shaft sealing device of crusher

Abstract

The shaft sealing device comprises an end cover, a fixed seat is fixedly connected to the interior of the end cover through a clamping end part, a transmission seat is rotationally connected to the interior, far away from the fixed seat, of the end cover, a movable ring is fixedly connected to the interior of the transmission seat, and a connecting body is fixedly connected to one side, far away from the transmission seat, of the movable ring; a cavity is formed in the connecting body, cooling liquid is stored in the cavity, and a thermostatic expansion valve is arranged at an opening of the cavity. According to the structure, the cavity is formed in the connecting body, the cavity is filled with the cooling liquid, when the rotating shaft generates large friction heat, the heat is transmitted to the thermal expansion valve through the metal guide piece, and the cooling liquid in the cavity flows to the surface of the rotating shaft to cool the rotating shaft according to the principle of thermal expansion and cold contraction.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sealing devices, in particular to a shaft sealing device of a crusher. Background Art

[0002] A shaft sealing device is usually provided on the input shaft and the output shaft of the sealing body. In order to prevent dust particles and other media from entering the sealing cavity, the leakage of the media will not only cause pollution to the environment, but also affect the operation and production of the equipment. Therefore, a sealing mechanism needs to be provided. For example, a Chinese patent discloses a shaft sealing device, and its application number is: CN201310491897.8. It is fixed in sequence between the retaining ring and the boss on the outer edge of the bottom of the labyrinth inner sleeve through a hard sealing ring, a spacer ring, and a soft sealing ring. The retaining ring is pressed against a hard sealing sheet; the hard sealing ring and the soft sealing ring are separated by a spacer ring, and the anti-aging and sealing effects are good, but no cold stamping parts are provided. The heat generated by the rotating shaft will accelerate the wear and damage of the parts. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art and provides a shaft sealing device for a crusher. A cavity is arranged inside a connecting body and a cooling liquid is filled inside the cavity. When a rotating shaft generates a large amount of friction heat, the heat is transferred to a thermal expansion valve through a metal guide. Through the principle of thermal expansion and contraction, the cooling liquid in the cavity flows to the surface of the rotating shaft to cool it down.

[0004] The utility model also provides a shaft sealing device with the above-mentioned crusher, comprising: an end cover, a protrusion fixedly connected to the inner side of the end cover, the end cover is fixedly connected to a static ring through the protrusion, the interior of the end cover is fixedly connected to a fixing seat through a clamping end, a sealing ring and a spring are arranged inside the fixing seat, the upper surface of the fixing seat is fixedly connected to a limiting strip, the side of the limiting strip away from the fixing seat is fixedly connected to the end cover through a fixing assembly, the interior of the fixing seat is rotatably connected to a transmission seat, the interior of the transmission seat is fixedly connected to a dynamic ring, the side of the dynamic ring away from the transmission seat is fixedly connected to a connector, a cavity is arranged inside the connector, a cooling liquid is stored inside the cavity, a thermal expansion valve is arranged at the opening of the cavity, through the above components, by arranging a cavity inside the connector, the cooling liquid is filled inside the cavity, when the rotating shaft generates large friction heat, the heat is transferred to the thermal expansion valve through the metal guide, and the cooling liquid in the cavity flows to the surface of the rotating shaft to cool it down through the principle of thermal expansion and contraction.

[0005] According to the shaft sealing device of a crusher described in the utility model, the fixing assembly includes a buckle and a screw, and the inside of the buckle is threadedly connected with the screw.

[0006] According to the shaft sealing device of the crusher described in the utility model, a sealing static ring is arranged between the connection between the end cover and the static ring. Through the above components, the medium is prevented from leaking between the static ring and the end cover, and the static ring has a certain floating property.

[0007] According to the shaft sealing device of a crusher described in the utility model, there are three springs and they are arranged symmetrically with the center line of the end cover as the axis. Through the above components, automatic compensation is carried out by the elastic force of the springs.

[0008] According to the shaft sealing device of a crusher described in the utility model, the outer surfaces of the sealing ring, the sealing dynamic ring and the sealing static ring are all coated with lubricating oil. Through the above components, according to the shaft sealing device of a crusher described in the utility model, a sealing dynamic ring is arranged between the connection between the transmission seat and the dynamic ring. Through the above components, the friction generated by the transmission can be reduced, so that the medium will not leak during the transmission process.

[0009] According to the shaft sealing device of a crusher described in the utility model, there are three cavities and all of them are located inside the connecting body. The cavities are arranged in an annular shape and the three cavities are fixedly connected through annular holes. Through the above components, the cooling liquid is stored in the cavities.

[0010] According to the shaft sealing device of a crusher described in the utility model, a connection notch is provided on the upper surface of the connector, a buffer gasket is provided between the connection notch and the sealing dynamic ring, and the lower surface of the buffer gasket is fixedly connected to the connector. The above components can achieve the effect of buffering and reducing vibration, and can also reduce the wear and noise of the equipment.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0013] Figure 1 This is a complete structural diagram of the shaft sealing device of the utility model crusher;

[0014] Figure 2 This is a cutaway structural diagram of the shaft sealing device of the crusher of the utility model;

[0015] Figure 3 This is a structural diagram of a fixed seat of a shaft sealing device of a crusher of the utility model;

[0016] Figure 4This is a structural diagram of the connector of the shaft sealing device of the crusher of the utility model.

[0017] Legend:

[0018] 1. End cover; 2. Dynamic ring; 3. Static ring; 4. Raised part; 5. Thermal expansion valve; 6. Clamping end; 7. Sealing ring; 8. Transmission seat; 9. Connecting notch; 10. Spring; 11. Sealing dynamic ring; 12. Sealing static ring; 13. Connector; 14. Buffer gasket; 15. Limiting strip; 16. Buckle; 17. Screw; 18. Ring hole; 19. Fixed seat; 20. Cavity; 21. Shaft body. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-4The utility model embodiment is a shaft sealing device of a crusher, which includes: an end cover 1, a protrusion 4 is fixedly connected to the inner side of the end cover 1, and the end cover 1 is connected and fixed to the position of the fixed seat 19. The end cover 1 is fixedly connected to a stationary ring 3 through the protrusion 4, which has good wear resistance and can reduce friction. At the same time, it can play a good heat conduction effect and can transfer the heat caused by friction in time. A sealing stationary ring 12 is arranged between the connection between the end cover 1 and the stationary ring 3 to prevent the medium from leaking from the end cover 1. The inside of the end cover 1 is fixedly connected to the fixed seat 19 through the clamp end 6. A fixing seat 19 is connected to fix the position of the connecting component to prevent deviation during rotation. A sealing ring 7 and a spring 10 are arranged inside the fixing seat 19 to effectively prevent the liquid from passing between the two matching surfaces to ensure the sealing and integrity of the device. There are three springs 10 and they are arranged symmetrically with the center line of the end cover 1 as the axis, so that the spring force is evenly distributed in the direction perpendicular to the sealing end face. The upper surface of the fixing seat 19 is fixedly connected to the limit strip 15 to fix the end cover 1 and the fixing seat 19. The side of the limit strip 15 away from the fixing seat 19 is fixed The assembly is fixedly connected to the end cover 1. The fixing assembly includes a buckle 16 and a screw 17, which play a fixing role to ensure that the components can be stably connected to prevent instability during rotation. The inside of the buckle 16 is threadedly connected to the screw 17. The end cover 1 is rotatably connected to the transmission seat 8 away from the internal part of the fixed seat 19, which is used to place the components of the dynamic ring 2 and the sealing dynamic ring 11. The internal part of the transmission seat 8 is fixedly connected to the dynamic ring 2 to prevent the medium from leaking from the inside, so that the components have a sealing effect when rotating. The side of the dynamic ring 2 away from the transmission seat 8 is fixedly connected to the connection The body 13 is a component connected to the transmission seat 8. A cavity 20 is provided inside the connecting body 13 to store a cooling liquid. When the rotating shaft generates an abnormal temperature, the cooling liquid is used to cool the rotating shaft to prevent damage to the components caused by excessive temperature. The cooling liquid is stored inside the cavity 20. A thermal expansion valve 5 is provided at the opening of the cavity 20 to adjust the flow of the cooling liquid in the cavity 20. There are three cavities 20 and they are all located inside the connecting body 13. The cavity 20 is arranged in an annular shape, and the three cavities 20 are fixedly connected through the annular hole 18.

[0021] The outer surfaces of the sealing ring 7, the sealing dynamic ring 11 and the sealing static ring 12 are all coated with lubricating oil. The sealing dynamic ring 11 is arranged between the connection of the transmission seat 8 and the dynamic ring 2, which has a sealing effect and effectively prevents the leakage of the medium and prevents the medium from damaging the parts.

[0022] The upper surface of the connector 13 is provided with a connecting notch 9, which is a component for fixing the connector 13. A buffer gasket 14 is provided between the connecting notch 9 and the sealing dynamic ring 11 to relieve impact thrust. The lower surface of the buffer gasket 14 is fixedly connected to the connector 13.

[0023] Working principle: first, the fixing seat 19 is sleeved on the shaft body 21, and a spring 10 is arranged on the inner side of the fixing seat 19 to store and release energy. The sealing static ring 12 is fixed on the end cover 1, and then the static ring 3 is fixed on the sealing static ring 12, which can prevent the medium from leaking from between the static ring 3 and the end cover 1. The sealing dynamic ring 11 is fixed on the transmission seat 8, and the dynamic ring 2 is fixed on one side of the sealing dynamic ring 11. The dynamic ring 2 can rotate with the shaft body 21 to form a sealed end face to prevent the leakage of the medium. A cavity 20 is arranged on the side surface of the connecting body 13, and the interior of the cavity 20 is filled with a cooling liquid. When the rotating shaft generates a large amount of friction heat, the heat is transferred to the thermal expansion valve 5 through the metal guide. Through thermal expansion and contraction, the cooling liquid in the cavity 20 flows to the surface of the rotating shaft to cool it down.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A shaft sealing device for a crusher, characterized in that: include: An end cover (1), wherein a protrusion (4) is fixedly connected to the inner side of the end cover (1), the end cover (1) is fixedly connected to a stationary ring (3) via the protrusion (4), the interior of the end cover (1) is fixedly connected to a fixing seat (19) via a clamping end portion (6), a sealing ring (7) and a spring (10) are arranged inside the fixing seat (19), a limiting strip (15) is fixedly connected to the upper surface of the fixing seat (19), and a side of the limiting strip (15) away from the fixing seat (19) is connected to the end cover (19) via a fixing assembly. 1) a fixed connection, wherein the fixed seat (19) is rotatably connected to a transmission seat (8), the transmission seat (8) is fixedly connected to a moving ring (2), a connecting body (13) is fixedly connected to the side of the moving ring (2) away from the transmission seat (8), a shaft (21) is fixedly connected to the connecting body (13), a cavity (20) is provided inside the connecting body (13), a cooling liquid is stored inside the cavity (20), and a thermal expansion valve (5) is provided at the opening of the cavity (20).

2. A crusher shaft sealing device according to claim 1, characterized in that: The fixing assembly comprises a buckle (16) and a screw (17), and the interior of the buckle (16) is threadedly connected to the screw (17).

3. A crusher shaft sealing device according to claim 1, characterized in that: A sealing static ring (12) is provided between the connection between the end cover (1) and the static ring (3).

4. A crusher shaft sealing device according to claim 1, characterized in that: There are three springs (10) which are arranged symmetrically with the center line of the end cover (1) as the axis.

5. The shaft sealing device of a crusher according to claim 1, characterized in that: The outer surfaces of the sealing ring (7), the sealing dynamic ring (11) and the sealing static ring (12) are all coated with lubricating oil.

6. A crusher shaft sealing device according to claim 1, characterized in that: A sealing dynamic ring (11) is provided between the connection between the transmission seat (8) and the dynamic ring (2).

7. A crusher shaft sealing device according to claim 1, characterized in that: There are three cavities (20) and all are located inside the connector (13); the cavities (20) are arranged in an annular shape, and the three cavities (20) are fixedly connected via an annular hole (18).

8. A crusher shaft sealing device according to claim 1, characterized in that: The upper surface of the connecting body (13) is provided with a connecting notch (9), a buffer gasket (14) is provided between the connecting notch (9) and the sealing dynamic ring (11), and the lower surface of the buffer gasket (14) is fixedly connected to the connecting body (13).

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