Novel carrier roller three-labyrinth sealing structure and bearing seat
By designing a new roller three-labyrinth sealing structure and bearing seat, using multi-layer retaining rings to form a labyrinth path and combining it with grease blocking, the problem of dust and water vapor entering the existing sealing structure is solved, and the protection effect and structural strength of the bearing are improved.
Patent Information
- Application Number
- CN202423190866.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The existing labyrinth roller sealing structure has large gaps, which makes it easy for dust, water vapor, etc. to enter the bearings, causing the bearings to rust or clog, affecting the rotation of the roller shaft.
A new type of roller three-labyrinth sealing structure is designed. A maze path is formed by setting up multiple layers of retaining rings, and grease barriers are set at key positions. Combined with the stamping forming of the bearing seat, the strength is increased to prevent dust and water vapor from entering the bearing.
It effectively blocks dust and water vapor from entering the bearings, prevents the bearings from rusting or clogging, ensures the normal rotation of the roller shaft, and improves the structural strength of the bearing seat to prevent deformation and damage.
Smart Images
Figure CN223399112U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of roller seals, and in particular relates to a novel roller three-labyrinth seal structure and a bearing seat. Background Art
[0002] Rollers are important components of belt conveyors. They are used in large quantities and have long continuous use time. Generally, they are damaged because the bearings cannot operate and are scrapped. The sealing structure is an important part of protecting the bearings. It can prevent dust, dirt and other impurities from entering the bearings, causing bearing damage; or prevent oil, gas or water vapor from entering the bearings, causing the bearings to corrode, rust and become blocked and unable to operate, thereby extending the life of the bearings.
[0003] The labyrinth roller in the prior art still has the technical problem of large gaps. The labyrinth of the existing sealing structure has only one layer, and dust, dirt, oil, gas or water vapor can easily enter the bearing through the gap, causing the bearing to be directly blocked or blocked after rusting, and eventually causing the roller shaft to fail to operate and be scrapped.
[0004] Therefore, a new type of roller three-labyrinth sealing structure and bearing seat is needed to solve the problem in the prior art that water vapor and dust enter the bearing, causing the bearing to rust or clog, affecting the rotation of the roller shaft. Utility Model Content
[0005] The purpose of the utility model is to provide a novel roller three-labyrinth sealing structure and a bearing seat to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a novel three-labyrinth sealing structure for idler rollers and a bearing seat, comprising a bearing seat, a bearing being fixed to the bottom surface of the inner wall of the bearing seat, a roller shaft being fixed to the inner wall of the bearing, the roller shaft passing through the bottom surface of the bearing seat, the top of the outer wall of the idler roller shaft being connected to the sealing upper cover, the bottom surface of the sealing upper cover being fixed with a first retaining ring, a second retaining ring and a third retaining ring, a sealing middle cover being fixed to the inner wall of the bearing seat, a fourth retaining ring and a fifth retaining ring being fixed to one side of the top surface of the sealing middle cover, a sixth retaining ring and a seventh retaining ring being fixed to the bottom surface of the sealing middle cover, a sealing lower cover being fixed to the top of the outer wall of the bearing seat, and an eighth retaining ring and a ninth retaining ring being fixed to the top surface of the sealing lower cover.
[0007] It should be noted in the solution that a first chamber is formed between the first retaining ring and the second retaining ring, and a second chamber is formed between the second retaining ring and the third retaining ring.
[0008] It is further worth mentioning that a third chamber is formed between the fourth retaining ring and the fifth retaining ring, and a fourth chamber is formed between the fourth retaining ring and the sealing middle cover.
[0009] It should be further explained that a fifth chamber is formed between the sixth retaining ring and the seventh retaining ring, and a sixth chamber is formed between the sixth retaining ring and the sealing middle cover.
[0010] As a preferred embodiment, a seventh chamber is formed between the eighth retaining ring and the ninth retaining ring, and an eighth chamber is formed between the eighth retaining ring and the sealing lower cover.
[0011] As a preferred embodiment, an annular groove is provided at the top of the outer side wall of the bearing seat, a retaining spring is engaged in the annular groove, and the bottom surface of the retaining spring contacts the top surface of the sealing cover.
[0012] As a preferred embodiment, the third baffle ring corresponds to the third chamber, the second baffle ring corresponds to the fourth chamber, the sixth baffle ring corresponds to the seventh chamber, and the seventh baffle ring corresponds to the eighth chamber.
[0013] Compared with the prior art, the novel roller three-labyrinth seal structure and bearing seat provided by the present invention have at least the following beneficial effects:
[0014] (1) By setting the first retaining ring, the second retaining ring, the third retaining ring, the fourth retaining ring, the fifth retaining ring, the sixth retaining ring, the seventh retaining ring, the eighth retaining ring and the ninth retaining ring, corresponding chambers can be formed between the nine retaining rings, and then a maze-like path is formed between the sealing upper cover, the sealing middle cover and the sealing lower cover, so that water vapor and dust can be blocked in the maze-like path, preventing water vapor and dust from entering the bearing. At the same time, the grease in the seventh chamber and the eighth chamber can further block water vapor and dust from entering the bearing, avoiding water vapor and dust from entering the bearing, causing the bearing to rust or clog, and affecting the rotation of the roller shaft.
[0015] (2) The bearing seat is strengthened by forming a protrusion through stamping, thereby preventing the bearing seat from being easily deformed, resulting in failure to seal and damage to the bearing, which in turn causes damage to the roller shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the utility model.
[0018] In the picture:
[0019] 100, bearing seat; 101, sealing cover; 102, first retaining ring; 103, second retaining ring; 104, third retaining ring;
[0020] 200, sealing middle cover; 201, fourth retaining ring; 202, fifth retaining ring; 203, sixth retaining ring; 204, seventh retaining ring;
[0021] 300, sealing lower cover; 301, eighth retaining ring; 302, ninth retaining ring;
[0022] 400, annular groove; 401, retaining ring;
[0023] 500, bearings;
[0024] 600. Roller shaft. DETAILED DESCRIPTION
[0025] See also Figure 1-Figure 2 The utility model provides a new type of three-labyrinth sealing structure for idler rollers and a bearing seat, including a bearing seat 100, a bearing 500 is fixed to the bottom surface of the inner wall of the bearing seat 100, a roller shaft 600 is fixed to the inner wall of the bearing 500, the roller shaft 600 passes through the bottom surface of the bearing seat 100, the top of the outer wall of the roller shaft 600 is connected to the sealing upper cover 101, the bottom surface of the sealing upper cover 101 is fixed with a first retaining ring 102, a second retaining ring 103 and a third retaining ring 104, the inner wall of the bearing seat 100 is fixed with a sealing middle cover 200, one side of the top surface of the sealing middle cover 200 is fixed with a fourth retaining ring 201 and a fifth retaining ring 202, the bottom surface of the sealing middle cover 200 is fixed with a sixth retaining ring 203 and a seventh retaining ring 204, the top of the outer wall of the bearing seat 100 is fixed with a sealing lower cover 300, and the top surface of the sealing lower cover 300 is fixed with an eighth retaining ring 301 and a ninth retaining ring 302.
[0026] Further as Figure 2 As shown, a first chamber is formed between the first retaining ring 102 and the second retaining ring 103 , and a second chamber is formed between the second retaining ring 103 and the third retaining ring 104 .
[0027] By providing the first chamber and the second chamber, water vapor and dust can pass through the first chamber and the second chamber when entering the bearing 500 , thereby blocking the dust and water vapor.
[0028] This solution has the following working process: when in use, water vapor and dust enter the first chamber, the second chamber, the third chamber, and the fourth chamber from the gap between the bearing seat 100 and the first retaining ring 102, and then enter the gap between the sealing middle cover 200 and the sealing upper cover 101 and the sealing lower cover 300, and then enter the fifth chamber, the sixth chamber, the seventh chamber and the eighth chamber. The water vapor and dust are blocked by the grease in the seventh chamber and the eighth chamber, and are prevented from further entering the bearing 500.
[0029] When the roller shaft 600 rotates, the sealing upper cover 101 and the sealing lower cover 300 rotate along with the roller shaft 600. When water vapor and dust enter the maze formed by the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber, the seventh chamber, the eighth chamber and the gaps between the sealing middle cover 200 and the sealing upper cover 101 and the sealing lower cover 300, the water vapor and dust can be blocked by the first stop ring 102, the second stop ring 103, the third stop ring 104, the fourth stop ring 201, the fifth stop ring 202, the sixth stop ring 203, the seventh stop ring 204, the eighth stop ring 301 and the ninth stop ring 302, and enter the corresponding chamber. At the same time, grease can further prevent water vapor and dust from entering the bearing 500.
[0030] Tiny gaps are formed between the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber, the seventh chamber, and the eighth chamber and the first retaining ring 102, the second retaining ring 103, the third retaining ring 104, the fourth retaining ring 201, the fifth retaining ring 202, the sixth retaining ring 203, the seventh retaining ring 204, the eighth retaining ring 301, and the ninth retaining ring 302, ensuring that there is no resistance when the bearing 500 rotates, thereby ensuring that dust cannot enter the bearing 500 through the gaps. The bearing seat 100 uses a stamped protrusion to increase strength, and the gap between the formed groove surface and the sealing cover 101 forms a maze that prevents dust and water vapor from entering the bearing 500.
[0031] According to the above working process, it can be known that: by setting the first baffle ring 102, the second baffle ring 103, the third baffle ring 104, the fourth baffle ring 201, the fifth baffle ring 202, the sixth baffle ring 203, the seventh baffle ring 204, the eighth baffle ring 301 and the ninth baffle ring 302, corresponding chambers can be formed between the nine baffle rings, and then a maze-like path is formed between the sealing upper cover 101, the sealing middle cover 200 and the sealing lower cover 300, so that water vapor and dust can be blocked in the maze-like path, preventing water vapor and dust from entering the bearing 500. At the same time, the grease in the seventh chamber and the eighth chamber can further block water vapor and dust from entering the bearing 500, avoiding water vapor and dust from entering the bearing 500, causing the bearing 500 to rust or clog, and affecting the rotation of the roller shaft 600.
[0032] The bearing seat 100 is strengthened by forming a protrusion by stamping, thereby preventing the bearing seat 100 from being easily deformed, resulting in failure to seal and damage to the bearing 500, which in turn causes damage to the roller shaft 600.
[0033] Further as Figure 2 As shown, a third chamber is formed between the fourth retaining ring 201 and the fifth retaining ring 202 , and a fourth chamber is formed between the fourth retaining ring 201 and the sealing middle cover 200 .
[0034] By providing the third chamber and the fourth chamber, water vapor and dust can pass through the third chamber and the fourth chamber when entering the bearing 500 , thereby blocking the dust and water vapor.
[0035] Further as Figure 2 As shown, a fifth chamber is formed between the sixth retaining ring 203 and the seventh retaining ring 204 , and a sixth chamber is formed between the sixth retaining ring 203 and the sealing middle cover 200 .
[0036] By providing the fifth chamber and the sixth chamber, water vapor and dust can pass through the fifth chamber and the sixth chamber when entering the bearing 500 , thereby blocking the dust and water vapor.
[0037] Further as Figure 2 As shown, a seventh chamber is formed between the eighth retaining ring 301 and the ninth retaining ring 302 , and an eighth chamber is formed between the eighth retaining ring 301 and the sealing lower cover 300 .
[0038] By providing the seventh chamber and the eighth chamber, water vapor and dust can pass through the seventh chamber and the eighth chamber when entering the bearing 500 , thereby blocking the dust and water vapor.
[0039] Further as Figure 2 As shown, an annular groove 400 is opened on the top of the outer wall of the bearing seat 100, and a retaining spring 401 is engaged in the annular groove 400, and the bottom surface of the retaining spring 401 contacts the top surface of the sealing cover 101.
[0040] The annular groove 400 is provided so that the retaining spring 401 can be connected to the roller shaft 600. The retaining spring 401 can further limit the position of the sealing cover 101, thereby preventing the sealing cover 101 from being removed.
[0041] Further as Figure 2 As shown, the third blocking ring 104 corresponds to the third chamber, the second blocking ring 103 corresponds to the fourth chamber, the sixth blocking ring 203 corresponds to the seventh chamber, and the seventh blocking ring 204 corresponds to the eighth chamber.
[0042] By setting the third baffle ring 104 to correspond to the third chamber, the second baffle ring 103 to correspond to the fourth chamber, the sixth baffle ring 203 to correspond to the seventh chamber, and the seventh baffle ring 204 to correspond to the eighth chamber, a maze path can be formed between the sealing upper cover 101, the sealing middle cover 200 and the sealing lower cover 300, thereby preventing dust and water vapor from entering the maze path, thereby preventing water vapor and dust from entering the bearing 500.
[0043] The seventh chamber and the eighth chamber are filled with grease.
[0044] In summary: during use, water vapor and dust enter the first chamber, the second chamber, the third chamber, and the fourth chamber from the gap between the bearing seat 100 and the first retaining ring 102, and then enter the gap between the sealing middle cover 200 and the sealing upper cover 101 and the sealing lower cover 300, and then enter the fifth chamber, the sixth chamber, the seventh chamber, and the eighth chamber. The water vapor and dust are blocked by the grease in the seventh chamber and the eighth chamber, and are prevented from further entering the bearing 500.
[0045] When the roller shaft 600 rotates, the sealing upper cover 101 and the sealing lower cover 300 rotate along with the roller shaft 600. When water vapor and dust enter the maze formed by the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber, the seventh chamber, the eighth chamber and the gaps between the sealing middle cover 200 and the sealing upper cover 101 and the sealing lower cover 300, the water vapor and dust can be blocked by the first stop ring 102, the second stop ring 103, the third stop ring 104, the fourth stop ring 201, the fifth stop ring 202, the sixth stop ring 203, the seventh stop ring 204, the eighth stop ring 301 and the ninth stop ring 302, and enter the corresponding chamber. At the same time, grease can further prevent water vapor and dust from entering the bearing 500.
[0046] Tiny gaps are formed between the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber, the seventh chamber, and the eighth chamber and the first retaining ring 102, the second retaining ring 103, the third retaining ring 104, the fourth retaining ring 201, the fifth retaining ring 202, the sixth retaining ring 203, the seventh retaining ring 204, the eighth retaining ring 301, and the ninth retaining ring 302, ensuring that there is no resistance when the bearing 500 rotates, thereby ensuring that dust cannot enter the bearing 500 through the gaps. The bearing seat 100 uses a stamped protrusion to increase strength, and the gap between the formed groove surface and the sealing cover 101 forms a maze that prevents dust and water vapor from entering the bearing 500.
[0047] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A novel roller three-labyrinth seal structure and bearing seat, including a bearing seat (100), characterized in that: The bottom surface of the inner wall of the bearing seat (100) is fixed with a bearing (500), the inner wall of the bearing (500) is fixed with a roller shaft (600), the roller shaft (600) passes through the bottom surface of the bearing seat (100), the top of the outer wall of the roller shaft (600) is connected to the sealing cover (101), the bottom surface of the sealing cover (101) is fixed with a first retaining ring (102), a second retaining ring (103) and a third retaining ring (104), the bearing seat (1 00) is fixed with a sealing middle cover (200) on the inner wall, a fourth retaining ring (201) and a fifth retaining ring (202) are fixed on one side of the top surface of the sealing middle cover (200), a sixth retaining ring (203) and a seventh retaining ring (204) are fixed on the bottom surface of the sealing middle cover (200), a sealing lower cover (300) is fixed on the top of the outer wall of the bearing seat (100), and an eighth retaining ring (301) and a ninth retaining ring (302) are fixed on the top surface of the sealing lower cover (300).
2. The novel roller three-labyrinth seal structure and bearing seat according to claim 1 is characterized by: A first chamber is formed between the first retaining ring (102) and the second retaining ring (103), and a second chamber is formed between the second retaining ring (103) and the third retaining ring (104).
3. The novel roller triple labyrinth seal structure and bearing seat according to claim 2, characterized in that: A third chamber is formed between the fourth retaining ring (201) and the fifth retaining ring (202), and a fourth chamber is formed between the fourth retaining ring (201) and the sealing middle cover (200).
4. The novel roller triple labyrinth seal structure and bearing seat according to claim 3 is characterized by: A fifth chamber is formed between the sixth retaining ring (203) and the seventh retaining ring (204), and a sixth chamber is formed between the sixth retaining ring (203) and the sealing middle cover (200).
5. The novel roller triple labyrinth seal structure and bearing seat according to claim 4 is characterized by: A seventh chamber is formed between the eighth retaining ring (301) and the ninth retaining ring (302), and an eighth chamber is formed between the eighth retaining ring (301) and the sealing lower cover (300).
6. The novel roller triple labyrinth seal structure and bearing seat according to claim 5, characterized in that: An annular groove (400) is provided at the top of the outer wall of the bearing seat (100), a retaining spring (401) is engaged in the annular groove (400), and the bottom surface of the retaining spring (401) contacts the top surface of the sealing upper cover (101).
7. The novel roller triple labyrinth seal structure and bearing seat according to claim 6, characterized in that: The third baffle ring (104) corresponds to the third chamber, the second baffle ring (103) corresponds to the fourth chamber, the sixth baffle ring (203) corresponds to the seventh chamber, and the seventh baffle ring (204) corresponds to the eighth chamber.