End cover with labyrinth sealing structure

Abstract

The utility model discloses an end cover with a labyrinth sealing structure, which relates to the technical field of sealing end covers and comprises an end cover base, an end cover is arranged at the upper end of the end cover base, and a rotating shaft rod is arranged in the center of the end cover. According to the end cover with the labyrinth sealing structure, a positioning groove is formed in the position, located at the bottom end of the end cover, of the outer side of a rotating shaft rod, a sealing ring is arranged on the inner side of the positioning groove, a sealing groove A is formed in the position, located on the inner side of an end cover base, of the outer side of the bottom of the shaft rod, a sealing groove B is formed in the inner side of the sealing groove A, and the sealing groove B is a groove shaped like a Chinese character'fei '; the four ends of the inner wall of the sealing groove B are arc angles, a flow guide plate is arranged on the inner side of the sealing groove B, the flow guide plate and the sealing groove B are of an integrated structure, the sealing groove B is an inclined plate inclining by 30 degrees, a flow guide loop is formed in the end cover base through mutual matching of the sealing groove B and the flow guide plate, the throttling effect is generated, and the leakage-resisting sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed end covers, in particular to an end cover with a labyrinth sealing structure. Background Art

[0002] The bearing sealing end cover is a seal installed between the inner and outer rings of the bearing. Its main function is to prevent the intrusion of dust and dirt and to protect the grease inside the bearing.

[0003] For example, patent number CN202321024694.3 discloses a bearing sealing end cover, including two end cover bodies and a convenient device, wherein the two end cover bodies are fixedly connected by the convenient device, and the convenient device includes two mounting plates, and mounting grooves are respectively provided on the sides of the two end surfaces of the two end cover bodies that are close to each other, and the same mounting plate is clamped in the inner wall of the mounting groove on the side of the two end cover bodies that are close to each other, and two screw holes are respectively provided on the surfaces of the two mounting plates, and screws are respectively threadedly connected to the inner walls of the two screw holes, and the screws are threadedly connected to the inner walls of the mounting grooves. When the utility model is disassembling the end cover body on the bearing, it is not easy for the disassembly tool to touch the parts on the bearing, and it is not easy to damage the bearing, thereby facilitating the inspection and maintenance of the bearing, and while ensuring the normal effectiveness of the end cover body, the practicality and convenience of the end cover body are improved;

[0004] The sealing end covers in this patent mostly use only sealing rings for sealing, which are prone to loosening when the shaft rotates for a long time, thus causing a certain impact on the anti-corrosion sealing effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an end cover with a labyrinth sealing structure, which solves the problem that most sealing end covers only use sealing rings for sealing, and the sealing rings are easily loosened when the shaft rotates for a long time, thereby causing a certain impact on the anti-corrosion sealing effect.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an end cover with a labyrinth sealing structure, including an end cover base, an end cover is provided at the upper end of the end cover base, a rotating shaft rod is provided at the center position of the end cover, the end surface of the bottom of the rotating shaft rod passes through the end cover and extends to the inner side of the end cover base, a sealing groove A is provided on the outer side of the bottom of the rotating shaft rod and located on the inner side of the end cover base, and a sealing groove B is provided on the inner side of the sealing groove A.

[0007] Preferably, the sealing groove B is a non-letter-shaped groove, the four ends of the inner wall of the sealing groove B are all arc angles, and the inner side of the sealing groove B is provided with a guide plate.

[0008] Preferably, the guide plate and the sealing groove B are an integral structure, and the sealing groove B is an inclined plate inclined at thirty degrees.

[0009] Preferably, the bottom end of the end cover is located on the inner side of the end cover base and is provided with a mounting groove, and both ends of the upper end surface of the end cover are provided with positioning pins, and the positioning pins penetrate the end cover and extend to the inner side of the end cover base, and the end cover base and the end cover are fixedly connected by the positioning pins.

[0010] Preferably, a through hole is provided below the rotating shaft rod at the center of the end cover, and the rotating shaft rod passes through the through hole and extends to the inner side of the end cover.

[0011] Preferably, a positioning groove is provided at the bottom end of the through hole, located on the outer side of the rotating shaft rod, and a sealing ring is provided on the inner side of the positioning groove.

[0012] Preferably, a positioning hole is provided on the inner side of the end cover base at the bottom end of the rotating shaft rod, and the bottom end of the rotating shaft rod is inserted into the inner side of the positioning hole.

[0013] Beneficial Effects

[0014] The utility model provides an end cover with a labyrinth seal structure. Compared with the prior art, it has the following beneficial effects:

[0015] A positioning groove is provided at the bottom end of the end cover through the outer side of the rotating shaft rod, a sealing ring is provided on the inner side of the positioning groove, and a sealing groove A is provided on the outer side of the bottom of the shaft rod on the inner side of the end cover base, a sealing groove B is provided on the inner side of the sealing groove A, the sealing groove B is a non-letter-shaped groove, the four ends of the inner wall of the sealing groove B are all arc angles, a guide plate is provided on the inner side of the sealing groove B, the guide plate and the sealing groove B are an integral structure, the sealing groove B is an inclined plate inclined at thirty degrees, and then a guide circuit is formed inside the end cover base through the cooperation between the sealing groove B and the guide plate, a throttling effect is produced, and the leakage-proof sealing effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the end cover base of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the sealing groove B of the utility model.

[0019] In the figure: 1. end cover base; 101. positioning hole; 2. end cover; 3. positioning pin; 4. rotating shaft rod; 5. sealing groove A; 6. sealing groove B; 601. guide plate. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3 The utility model provides a technical solution: an end cover with a labyrinth sealing structure, comprising an end cover base 1, an end cover 2 is arranged at the upper end of the end cover base 1, a mounting groove is arranged at the bottom end of the end cover 2 located at the inner side of the end cover base 1, and positioning pins 3 are arranged at both ends of the upper end surface of the end cover 2, the positioning pins 3 penetrate the end cover 2 and extend to the inner side of the end cover base 1, the end cover base 1 and the end cover 2 are fixedly connected by the positioning pins 3, thereby facilitating the connection between the end cover base 1 and the end cover 2;

[0022] A rotating shaft rod 4 is provided at the center of the end cover 2, and the end surface of the bottom of the rotating shaft rod 4 passes through the end cover 2 and extends to the inner side of the end cover base 1. A through hole is provided below the rotating shaft rod 4 at the center of the end cover 2, and the rotating shaft rod 4 passes through the through hole and extends to the inner side of the end cover 2. The bottom end of the through hole is located on the outer side of the rotating shaft rod 4 and is provided with a positioning groove, and a sealing ring is provided on the inner side of the positioning groove. The bottom end of the rotating shaft rod 4 is located on the inner side of the end cover base 1 and is provided with a positioning hole 101, so as to facilitate the positioning and sealing of the rotating shaft rod 4.

[0023] The bottom end of the shaft rod 4 is inserted into the inner side of the positioning hole 101, and the outer side of the bottom of the shaft rod 4 is located on the inner side of the end cover base 1 and is provided with a sealing groove A5, and the inner side of the sealing groove A5 is provided with a sealing groove B6, and the sealing groove B6 is a non-letter-shaped groove, and the four ends of the inner wall of the sealing groove B6 are all arc angles, and the inner side of the sealing groove B6 is provided with a guide plate 601, and the guide plate 601 and the sealing groove B6 are an integral structure, and the sealing groove B6 is an inclined plate inclined at thirty degrees, and then the sealing groove B6 and the guide plate 601 cooperate with each other to form a guide circuit inside the end cover base 1, thereby producing a throttling effect and improving the leakage-proof sealing effect.

[0024] During operation, the shaft rod 4 is inserted into the end cover base 1, and the end cover 2 is connected to the end cover base 1 through the positioning pin 3. A positioning groove is provided at the bottom end of the end cover 2 through the outer side of the shaft rod 4, and a sealing ring is provided on the inner side of the positioning groove. A sealing groove A5 is provided on the outer side of the bottom of the shaft rod 4 and located on the inner side of the end cover base 1. A sealing groove B6 is provided on the inner side of the sealing groove A5. The sealing groove B6 is a non-letter-shaped groove. The four ends of the inner wall of the sealing groove B6 are all arc angles. A guide plate 601 is provided on the inner side of the sealing groove B6. The guide plate 601 and the sealing groove B6 are an integral structure. The sealing groove B6 is an inclined plate inclined at thirty degrees. Then, the sealing groove B6 and the guide plate 601 cooperate with each other to form a guide circuit inside the end cover base 1, thereby producing a throttling effect and improving the leakage-proof sealing effect.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An end cap with a labyrinth seal structure, comprising an end cap base (1), characterized in that: An end cover (2) is provided at the upper end of the end cover base (1), a rotating shaft rod (4) is provided at the center position of the end cover (2), an end surface of the bottom of the rotating shaft rod (4) passes through the end cover (2) and extends to the inner side of the end cover base (1), a sealing groove A (5) is provided on the outer side of the bottom of the rotating shaft rod (4) and located on the inner side of the end cover base (1), and a sealing groove B (6) is provided on the inner side of the sealing groove A (5).

2. The end cover with a labyrinth seal structure according to claim 1, characterized in that: The sealing groove B (6) is a non-letter-shaped groove, the four ends of the inner wall of the sealing groove B (6) are all arc angles, and a guide plate (601) is provided on the inner side of the sealing groove B (6).

3. The end cover with a labyrinth seal structure according to claim 2, characterized in that: The guide plate (601) and the sealing groove B (6) are an integral structure, and the sealing groove B (6) is an inclined plate inclined at thirty degrees.

4. The end cover with a labyrinth seal structure according to claim 1, characterized in that: The bottom end of the end cover (2) is located on the inner side of the end cover base (1) and is provided with a mounting groove. Both ends of the upper end surface of the end cover (2) are provided with positioning pins (3). The positioning pins (3) penetrate the end cover (2) and extend to the inner side of the end cover base (1). The end cover base (1) and the end cover (2) are fixedly connected via the positioning pins (3).

5. The end cover with a labyrinth seal structure according to claim 1, characterized in that: A through hole is provided below the rotating shaft rod (4) at the center of the end cover (2), and the rotating shaft rod (4) passes through the through hole and extends to the inner side of the end cover (2).

6. The end cover with a labyrinth seal structure according to claim 5, characterized in that: The bottom end of the through hole is located on the outside of the rotating shaft rod (4) and is provided with a positioning groove, and the inner side of the positioning groove is provided with a sealing ring.

7. The end cover with a labyrinth seal structure according to claim 1, characterized in that: The bottom end of the rotating shaft rod (4) is located on the inner side of the end cover base (1) and is provided with a positioning hole (101), and the bottom end of the rotating shaft rod (4) is inserted into the inner side of the positioning hole (101).

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