Large-size rotary sealing structure

Abstract

The utility model relates to the technical field of rotary equipment sealing, in particular to a large-size rotary sealing structure which comprises a large gear ring and a gear ring housing, annular sealing frames are arranged on the two side walls of the gear ring housing respectively, Y-shaped sealing rings are arranged on the sides, close to the large gear ring, of the sealing frames, two lips of each Y-shaped sealing ring are located on the outer ring of the corresponding sealing ring, and the outer ring of each sealing ring is provided with a sealing ring. The Y-shaped sealing ring is arranged on the inner ring face of the large gear ring and abuts against the inner ring face of the large gear ring, the annular pressing plate is arranged on the side, away from the sealing frame, of the Y-shaped sealing ring, the pressing plate, the Y-shaped sealing ring and the sealing frame are connected through the arranged fixing bolts, the structure is simple, the sealing performance is reliable, and the Y-shaped sealing ring abuts against the inner ring face of the large gear ring, so that the sealing effect is not affected when the large gear ring moves along with the barrel. And the friction resistance is small, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary equipment sealing, in particular to a large-size rotary sealing structure. Background Art

[0002] Existing large-scale rotary equipment all use large gear rings. In the early stage, the sealing end face of the large gear ring adopted a labyrinth seal. A labyrinth plate was installed on the side of the gear ring, and a labyrinth plate matching it was installed on the gear ring cover. The structure is large in size and complex in structure. When the gear ring moves with the cylinder, the labyrinth plates are prone to collision, and there are gaps between the labyrinth plates, which are easy to enter dust and leak oil, causing danger and polluting the environment. Utility Model Content

[0003] The utility model aims to solve the above problems, thereby providing a large-size rotary sealing structure.

[0004] The utility model solves the above problems and adopts the following technical solutions:

[0005] A large-size rotary sealing structure comprises a large gear ring and a gear ring cover. Annular sealing frames are respectively arranged on the two side walls of the gear ring cover. A Y-shaped sealing ring is arranged on the side of the sealing frame close to the large gear ring. The two lips of the Y-shaped sealing ring are located on the outer ring of the sealing ring and abut against the inner ring surface of the large gear ring. An annular pressure plate is arranged on the side of the Y-shaped sealing ring away from the sealing frame, and the pressure plate, the Y-shaped sealing ring and the sealing frame are connected by set fixing bolts.

[0006] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0007] The utility model has a simple structure and reliable sealing performance. A Y-shaped sealing ring is used to abut against the inner ring surface of the large gear ring, so that when the large gear ring moves with the cylinder body, the sealing effect is not affected, the friction resistance is small, and the practicability is stronger.

[0008] As a preferred embodiment, a further technical solution of the utility model is:

[0009] A manual oil pump is arranged outside the gear ring cover, and the manual oil pump is communicated with the cavity formed by the two lips of the Y-shaped sealing ring and the inner ring surface of the large gear ring through an arranged oil pipe.

[0010] The hole on the Y-shaped sealing ring penetrated by the fixing bolt is a long strip hole. The center line of the long strip hole in the length direction is extended through the center of the Y-shaped sealing ring. A pressure strip is arranged on the inner ring surface of the Y-shaped sealing ring. A plurality of clamping bolts are evenly distributed on the sealing frame. After the clamping bolts are tightened, the end parts thereof abut against the pressure strip.

[0011] The sealing frame and the gear ring cover are connected by bolts, and a sealing gasket is arranged between the sealing frame and the gear ring cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0013] Figure 2 For the utility model embodiment Figure 1 A partial enlarged structural diagram of the middle A part;

[0014] Marked in the figure are: gear ring cover 1, sealing frame 2, Y-type sealing ring 3, pressure plate 4, fixing bolt 5, manual oil pump 6, oil pipe 7, pressure strip 8, clamping bolt 9, large gear ring 10, sealing gasket 11, oil retaining ring 12. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0016] See also Figure 1-Figure 2 A large-size rotary sealing structure includes a large gear ring 10 and a gear ring housing 1. Annular sealing frames 2 are respectively arranged on the two side walls of the gear ring housing 1. A Y-shaped sealing ring 3 is arranged on the side of the sealing frame 2 close to the large gear ring 10. The two lips of the Y-shaped sealing ring 3 are located on the outer ring of the sealing ring and abut against the inner ring surface of the large gear ring 10. An annular pressing plate 4 is arranged on the side of the Y-shaped sealing ring 3 away from the sealing frame 2, and the pressing plate 4, the Y-shaped sealing ring 3 and the sealing frame 2 are connected by the arranged fixing bolts 5.

[0017] A manual oil pump 6 is arranged on the outside of the gear ring cover 1, and the manual oil pump 6 is connected with the cavity formed by the two lips of the Y-shaped sealing ring 3 and the inner ring surface of the large gear ring 10 through the arranged oil pipe 7; the cavity formed by the two lips of the Y-shaped sealing ring 3 and the inner ring surface of the large gear ring 10 is filled with grease to play a lubricating role, reduce friction, and play an unexpected role in enhancing the sealing effect.

[0018] The hole on the Y-shaped sealing ring 3 penetrated by the fixing bolt 5 is a long strip hole, and the center line of the long strip hole in the length direction is extended through the center of the Y-shaped sealing ring 3, and a pressure strip 8 is arranged on the inner ring surface of the Y-shaped sealing ring 3, and a plurality of clamping bolts 9 are evenly distributed on the sealing frame 2. After the clamping bolts 9 are tightened, the end parts thereof abut against the pressure strip 8; the Y-shaped sealing ring 3 is clamped by the clamping bolts 9 to ensure effective sealing of the sealing surface between the Y-shaped sealing ring 3 and the large gear ring 10.

[0019] The sealing frame 2 and the gear ring housing 1 are connected by bolts, and a sealing gasket 11 is arranged between the sealing frame 2 and the gear ring housing 1; the sealing frame 2 and the gear ring housing 1 are detachable, which is convenient for later maintenance and repair.

[0020] Oil deflectors 12 are provided on both sides of the large gear ring 10 , and an oil groove is formed between the oil deflector 12 and the large gear ring 10 to reduce the influence of the gear ring lubricating oil on the sealing ring.

[0021] The utility model has a simple structure and reliable sealing performance. A Y-shaped sealing ring is used to abut against the inner ring surface of the large gear ring, so that when the large gear ring moves with the cylinder body, the sealing effect is not affected, the friction resistance is small, and the practicability is stronger.

[0022] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A large-size rotary seal structure, comprising a large ring gear and a ring gear housing, characterized in that: Annular sealing frames are respectively arranged on the two side walls of the gear ring cover, a Y-shaped sealing ring is arranged on the side of the sealing frame close to the large gear ring, two lips of the Y-shaped sealing ring are located on the outer ring of the sealing ring and abut against the inner ring surface of the large gear ring, an annular pressure plate is arranged on the side of the Y-shaped sealing ring away from the sealing frame, and the pressure plate, the Y-shaped sealing ring and the sealing frame are connected by the set fixing bolts.

2. A large-size rotary seal structure according to claim 1, characterized in that: A manual oil pump is arranged outside the gear ring cover, and the manual oil pump is communicated with the cavity formed by the two lips of the Y-shaped sealing ring and the inner ring surface of the large gear ring through an arranged oil pipe.

3. A large-size rotary seal structure according to claim 1, characterized in that: The hole on the Y-shaped sealing ring penetrated by the fixing bolt is a long strip hole. The center line of the long strip hole in the length direction is extended through the center of the Y-shaped sealing ring. A pressure strip is arranged on the inner ring surface of the Y-shaped sealing ring. A plurality of clamping bolts are evenly distributed on the sealing frame. After the clamping bolts are tightened, the end parts thereof abut against the pressure strip.

4. A large-size rotary seal structure according to claim 1, characterized in that: The sealing frame and the gear ring cover are connected by bolts, and a sealing gasket is arranged between the sealing frame and the gear ring cover.

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