A transmission group with a sealing structure

Abstract

The utility model relates to the technical field of transmission groups, and in particular to a transmission group with a sealing structure, including a main shaft, the circumferential surface of the main shaft is rotatably connected to a bearing box, the side surface of the bearing box is provided with a first limit groove, and the first sealing rings are installed inside the two first limit grooves. Both ends of the bearing box are movably connected with sleeve covers, the inner side wall of the top mounting groove of the left end sleeve cover is fixedly connected with a fixing column, the circumferential surface of the fixing column is sleeved with a connecting rod, and the end of the connecting rod away from the fixing column is threadedly connected to a threaded rod, the end of the threaded rod is rotatably connected to a limiting block, and the limiting block is fitted with the side surface of the right end sleeve cover. The utility model, by providing the first sealing ring, the connecting rod, the threaded rod and the limit block, is conducive to improving the convenience of replacing the first sealing ring, and by providing the second limit groove and the second sealing ring, it is conducive to further improving the sealing of the transmission group.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission groups, in particular to a transmission group with a sealing structure. Background Art

[0002] As an impeller machine for conveying air, fans are widely used in various industrial production and life fields. In the rapid cooling section of the annealing furnace on the continuous annealing line of the steel plant, a circulating cooling fan needs to be designed and used. Considering the special use environment that the medium conveyed by the steel plant is 96% nitrogen and 4% hydrogen, and the temperature can reach more than 400°C, the fan must be designed with sealing effect in mind. Gas leakage in the fan cavity and air leakage into the fan cavity are not allowed, so a transmission group with a sealing structure is required.

[0003] The existing transmission group with a sealing structure has a weakened sealing effect due to wear of the sealing ring by the main shaft during use, so the sealing ring needs to be replaced. However, the covers on both sides of the bearing box are threadedly connected to the bearing box and need to be disassembled one by one, which is time-consuming. Therefore, a transmission group with a sealing structure is needed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a transmission group with a sealing structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a transmission group with a sealing structure, comprising a main shaft, the circumferential surface of the main shaft is rotatably connected to a bearing box, the side surface of the bearing box is provided with a first limit groove, the number of the first limit grooves is set to two, and the first sealing ring is installed inside the two first limit grooves, both ends of the bearing box are movably connected with sleeve covers, and the tops of the sleeve covers at both ends are provided with installation grooves, the inner side wall of the installation groove at the top of the left end sleeve cover is fixedly connected with a fixing column, the circumferential surface of the fixing column is sleeved with a connecting rod, the end of the connecting rod away from the fixing column is threadedly connected to a threaded rod, the end of the threaded rod is rotatably connected to a limiting block, and the limiting block fits with the side surface of the right end sleeve cover.

[0006] Further: a second limiting groove is provided on the side surface of the cover, and a convex ring is provided on the inner side wall of the second limiting groove.

[0007] Furthermore: a second sealing ring is sleeved on the outer portion of the convex ring, and an end of the second sealing ring away from the second limiting groove is in contact with the circumferential surface of the main shaft.

[0008] Further: a rotating handle is fixedly connected to the outer surface of the threaded rod, and the outer surface of the rotating handle is provided with anti-slip textures.

[0009] Further: the inner side wall of the second limiting groove is threadedly connected with a connecting sleeve, and the end of the connecting sleeve is in contact with the circumferential surface of the main shaft.

[0010] Furthermore: a fixing block is fixedly connected to the circumferential surface of the connecting sleeve, and a plurality of the fixing blocks are provided and are distributed in a ring shape around the connecting sleeve.

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

[0012] Compared with the prior art, by providing a first sealing ring, a connecting rod, a threaded rod and a limit block, the threaded rod is rotated during use to make the threaded rod move toward the outside of the connecting rod, thereby driving the limit block to gradually separate from the right end sleeve cover, thereby facilitating the removal of the connecting rod from the fixed column, and then facilitating the separation of the sleeve covers on both sides from the bearing box, and disassembling the sleeve covers on both sides at the same time, saving time and making it convenient to take out the first sealing ring inside the first limit groove for replacement, which is conducive to improving the convenience of replacing the first sealing ring.

[0013] Compared with the prior art, by providing a second limiting groove and a second sealing ring, the connecting sleeve is driven to rotate by a fixed block, so that the second sealing ring is squeezed when the connecting sleeve is connected to the internal thread of the second limiting groove, which is beneficial to further improve the sealing of the transmission group. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 It is an exploded view of the utility model.

[0018] Legend:

[0019] 1. Spindle; 2. Bearing box; 3. First limit groove; 4. First sealing ring; 5. Sleeve cover; 6. Second limit groove; 7. Second sealing ring; 8. Connecting sleeve; 9. Fixed block; 10. Mounting groove; 11. Fixed column; 12. Connecting rod; 13. Threaded rod; 14. Limit block; 15. Turning handle. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0021] Reference Figure 1-4 The utility model provides a transmission group with a sealing structure: comprising a main shaft 1, the circumferential surface of the main shaft 1 is rotatably connected to a bearing box 2, the side surface of the bearing box 2 is provided with a first limit groove 3, the number of the first limit grooves 3 is set to two, and the first sealing ring 4 is installed inside the two first limit grooves 3. Both ends of the bearing box 2 are movably connected with a sleeve cover 5, and the top of the sleeve cover 5 at both ends is provided with a mounting groove 10, the inner side wall of the mounting groove 10 at the top of the left end sleeve cover 5 is fixedly connected with a fixing column 11, the circumferential surface of the fixing column 11 is sleeved with a connecting rod 12, and the end of the connecting rod 12 away from the fixing column 11 is threadedly connected with a threaded rod 13, the end of the threaded rod 13 is rotatably connected to a limiting block 14, and the limiting block 14 fits with the side surface of the right end sleeve cover 5. When in use, the threaded rod 13 is rotated to move the threaded rod 13 to the outside of the connecting rod 12, thereby driving the limit block 14 to gradually separate from the right end sleeve cover 5, so as to facilitate the removal of the connecting rod 12 from the fixed column 11, and then facilitate the separation of the sleeve covers 5 on both sides from the bearing box 2, and the sleeve covers 5 on both sides are disassembled at the same time, which saves time and facilitates the removal of the first sealing ring 4 inside the first limit groove 3 for replacement, which is conducive to improving the convenience of replacing the first sealing ring 4.

[0022] The side surface of the sleeve cover 5 is provided with a second limiting groove 6, and the inner side wall of the second limiting groove 6 is provided with a convex ring. The outer side of the convex ring is provided with a second sealing ring 7, and the end of the second sealing ring 7 away from the second limiting groove 6 is in contact with the circumferential surface of the main shaft 1. The second sealing ring 7 is sleeved on the convex ring, thereby enhancing the stability of the installation of the second sealing ring 7.

[0023] The outer surface of the threaded rod 13 is fixedly connected with a rotating handle 15, and the outer surface of the rotating handle 15 is provided with anti-skid lines. The rotating handle 15 is used to facilitate the rotation of the threaded rod 13, so as to enhance the convenience of operating the threaded rod 13.

[0024] The inner wall of the second limiting groove 6 is threadedly connected with a connecting sleeve 8, and the end of the connecting sleeve 8 is in contact with the circumferential surface of the main shaft 1. The circumferential surface of the connecting sleeve 8 is fixedly connected with a fixing block 9, and the number of fixing blocks 9 is multiple and distributed in a ring shape around the connecting sleeve 8. The fixing block 9 drives the connecting sleeve 8 to rotate, so that the second sealing ring 7 is squeezed when the connecting sleeve 8 is threadedly connected to the inner part of the second limiting groove 6, which is conducive to further improving the sealing performance of the transmission group.

[0025] Working principle:

[0026] During use, the threaded rod 13 is rotated to move the threaded rod 13 toward the outside of the connecting rod 12, thereby driving the limiting block 14 to gradually separate from the right end sleeve cover 5, so as to facilitate the connection rod 12 to be removed from the fixing column 11, and then facilitate the separation of the sleeve covers 5 on both sides from the bearing box 2, and the sleeve covers 5 on both sides are disassembled at the same time, saving time, and facilitating the removal of the first sealing ring 4 inside the first limiting groove 3 for replacement, which is conducive to improving the convenience of replacing the first sealing ring 4. The fixing block 9 is used to drive the connecting sleeve 8 to rotate, so that the second sealing ring 7 is squeezed when the connecting sleeve 8 is connected to the second limiting groove 6 through the internal thread, which is conducive to further improving the sealing of the transmission group.

[0027] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A transmission group with a sealing structure, comprising a main shaft (1), characterized in that: The circumferential surface of the main shaft (1) is rotatably connected to a bearing box (2), and a first limiting groove (3) is provided on the side surface of the bearing box (2). The number of the first limiting grooves (3) is two, and a first sealing ring (4) is installed inside the two first limiting grooves (3). Both ends of the bearing box (2) are movably connected to sleeve covers (5), and the tops of the sleeve covers (5) at both ends are provided with mounting grooves (10). The inner side wall of the mounting groove (10) at the top of the left end sleeve cover (5) is fixedly connected to a fixing column (11), and the circumferential surface of the fixing column (11) is sleeved with a connecting rod (12), and the end of the connecting rod (12) away from the fixing column (11) is threadedly connected to a threaded rod (13), and the end of the threaded rod (13) is rotatably connected to a limiting block (14), and the limiting block (14) fits with the side surface of the right end sleeve cover (5).

2. The transmission group with a sealing structure according to claim 1, characterized in that: A second limiting groove (6) is provided on the side surface of the sleeve cover (5), and a convex ring is provided on the inner side wall of the second limiting groove (6).

3. The transmission group with a sealing structure according to claim 2, characterized in that: A second sealing ring (7) is sleeved on the outside of the convex ring, and one end of the second sealing ring (7) away from the second limiting groove (6) is in contact with the circumferential surface of the main shaft (1).

4. The transmission group with a sealing structure according to claim 1, characterized in that: The outer surface of the threaded rod (13) is fixedly connected to a rotating handle (15), and the outer surface of the rotating handle (15) is provided with anti-slip patterns.

5. The transmission group with a sealing structure according to claim 2, characterized in that: The inner side wall of the second limiting groove (6) is threadedly connected with a connecting sleeve (8), and the end of the connecting sleeve (8) is in contact with the circumferential surface of the main shaft (1).

6. The transmission group with a sealing structure according to claim 5, characterized in that: A fixing block (9) is fixedly connected to the circumferential surface of the connecting sleeve (8), and a plurality of the fixing blocks (9) are provided and are distributed in a ring shape around the connecting sleeve (8).

Images