A bearing block structure for tensioning in the tail section of a bucket elevator

Abstract

The utility model discloses a bearing seat structure for the tension of bucket elevator tail inner part, including bearing seat end cover, bearing seat, bearing, sealing felt, dust cover, labyrinth seal ring, bearing baffle and framework oil seal, the bearing seat is equipped with the step hole of big before small behind, the big diameter section and small diameter section of step hole are equipped with bearing and bearing baffle respectively for installing tail axle, the small diameter section of step hole is sealed through the framework oil seal between with bearing baffle, the rear end of bearing seat is equipped with dust cover, the dust cover is sealed through sealing felt between with tail axle, the rear end of bearing seat is equipped with the labyrinth seal ring in dust cover and is used for sealing between with tail axle, the front end of bearing seat is equipped with bearing seat end cover, the front end of tail axle is equipped with the bearing fixed plate of fixed bearing's inner ring, compared with prior art, can avoid the dust into the bearing seat, improves the service life of bearing.

Description

Technical Field

[0001] This utility model relates to the technical field of bucket elevators, and in particular to a bearing seat structure for tensioning the tail section of a bucket elevator. Background Technology

[0002] Bucket elevators are large mechanical devices that transport materials by changing their potential energy. Examples include mine elevators and dam hoists. Bucket elevators are fixed mechanical conveying devices, mainly suitable for the continuous vertical lifting of powdery, granular, and small lump materials. They can be widely used in various sizes of feed mills, flour mills, rice mills, oil mills, starch mills, as well as grain depots, port terminals, and other places for lifting bulk materials.

[0003] Bucket elevator tail drive is divided into two types: external tension and internal tension. The tail bearing housing of the external tension structure is outside the casing, which is a good operating environment with no dust. The tail bearing housing of the internal tension structure is sealed inside the casing, which is a harsh operating environment with dust everywhere inside the casing. When dust can easily enter the bearing housing, it will accelerate the wear of the bearing and reduce the service life of the bearing. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a bearing housing structure for tensioning the tail section of a bucket elevator, which can prevent dust from entering the bearing housing and improve the service life of the bearing.

[0005] To achieve the above objectives, this utility model proposes a bearing housing structure for tensioning the tail section of a bucket elevator, comprising a bearing housing end cover, a bearing housing, a bearing, sealing felt, a dust cover, a labyrinth seal ring, a bearing retaining ring, and a skeleton oil seal. The bearing housing has a stepped hole that is larger at the front and smaller at the rear. The large-diameter section and the small-diameter section of the stepped hole are respectively equipped with a bearing and a bearing retaining ring for mounting the tail shaft. The small-diameter section of the stepped hole is sealed to the bearing retaining ring by the skeleton oil seal. The rear end of the bearing housing is equipped with a dust cover, which is sealed to the tail shaft by a sealing felt. The rear end of the bearing housing is equipped with a labyrinth seal ring located inside the dust cover for sealing with the tail shaft. The front end of the bearing housing is equipped with a bearing housing end cover, and the front end of the tail shaft is equipped with a bearing fixing plate for fixing the inner ring of the bearing.

[0006] Preferably, the labyrinth seal ring is provided with a sealing outer ring and a sealing inner ring located within the sealing outer ring, and the bearing seat is provided with two sealing grooves that respectively cooperate with the sealing outer ring and the sealing inner ring.

[0007] Preferably, the large-diameter section of the stepped hole is connected to the sealing inner ring through a connecting hole on the bearing housing.

[0008] Preferably, the dust cover is provided with a felt cover, and the felt cover is provided with an inlay groove for embedding sealing felt.

[0009] Preferably, the lower end of the bearing housing is provided with an oil injection hole that communicates with the large-diameter section of the stepped hole behind the bearing, and the oil injection hole is provided with an oil injection nozzle.

[0010] Preferably, the dust cover is provided with an oil drain port, and the oil drain port is provided with a plug.

[0011] Preferably, a bearing retaining ring is provided between the outer ring of the bearing and the rear end of the large-diameter section of the stepped hole.

[0012] Preferably, the two ends of the bearing retaining ring rest on the inner ring of the bearing and the labyrinth seal ring respectively, and the tail shaft is provided with a step to block the labyrinth seal ring.

[0013] Preferably, the bearing housing is provided with a groove that mates with the open end of the dust cover.

[0014] The beneficial effects of this utility model are as follows: The first layer of sealing: the combination of the dust cover and sealing felt prevents dust accumulation at the second layer of sealing, providing a good environment for the second layer of sealing; the second layer of sealing: the combination of the bearing housing and the labyrinth seal ring forms a labyrinth seal, with the labyrinth filled with grease, preventing dust from entering the bearing housing; the third layer of sealing: the bearing housing, bearing retaining ring, and skeleton oil seal form a skeleton oil seal sealing structure, which can prevent contaminated grease from entering the bearing housing and also prevent the lubricating grease inside the bearing from being contaminated by dust; the three-layer sealing protection ensures that dust cannot enter the bearing housing, thereby improving the service life of the bearing. Compared with the prior art, it can prevent dust from entering the bearing housing and improve the service life of the bearing.

[0015] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural schematic diagram of a bearing seat structure for internal tensioning at the tail end of a bucket elevator, according to this utility model.

[0017] In the diagram: 1-Bearing housing end cover, 2-Bearing housing, 3-Bearing, 4-Bearing retaining ring, 5-Felt cover, 6-Sealing felt, 7-Dust cover, 8-Labyrinth seal ring, 9-Bearing retaining ring, 10-Skeleton oil seal, 11-Step hole, 12-Tail shaft, 13-Bearing fixing plate, 14-Connecting hole, 15-Inlay groove, 16-Oil injection hole, 17-Oil injection nozzle, 18-Oil drain port, 19-Plug, 20-Insertion groove, 21-Sealing groove, 121-Step, 81-Sealing outer ring, 82-Sealing inner ring. Detailed Implementation

[0018] See Figure 1This utility model discloses a bearing housing structure for tensioning the tail section of a bucket elevator, comprising a bearing housing end cover 1, a bearing housing 2, a bearing 3, a sealing felt 6, a dust cover 7, a labyrinth seal ring 8, a bearing retaining ring 9, and a skeleton oil seal 10. The bearing housing 2 has a stepped hole 11 with a larger diameter at the front and a smaller diameter at the rear. The larger diameter section of the stepped hole 11 and the smaller diameter section are respectively provided with the bearing 3 and the bearing retaining ring 9 for mounting the tail shaft 12. The smaller diameter section of the stepped hole 11 and the bearing retaining ring 9 are sealed by the skeleton oil seal 10. The rear end of the bearing housing 2 is provided with a dust cover 7, which is sealed to the tail shaft 12 by the sealing felt 6. The rear end of the bearing housing 2 is provided with a labyrinth seal ring 8 located inside the dust cover 7 for sealing with the tail shaft 12. The front end of the bearing housing 2 is provided with a bearing housing end cover 1, and the front end of the tail shaft 12 is provided with a bearing fixing plate 13 for fixing the inner ring of the bearing 3.

[0019] The labyrinth sealing ring 8 is provided with a sealing outer ring 81 and a sealing inner ring 82 located inside the sealing outer ring 81, and the bearing seat 2 is provided with two sealing grooves 21 that respectively cooperate with the sealing outer ring 81 and the sealing inner ring 82.

[0020] The large-diameter section of the stepped hole 11 is connected to the sealing inner ring 82 through the connecting hole 14 on the bearing seat 2.

[0021] The dust cover 7 is provided with a felt cover 5, and the felt cover 5 is provided with an inlay groove 15 for embedding sealing felt 6.

[0022] The lower end of the bearing housing 2 is provided with an oil injection hole 16 that communicates with the large diameter section of the stepped hole 11 behind the bearing 3, and an oil injection nozzle 17 is provided on the oil injection hole 16.

[0023] The dust cover 7 is provided with an oil drain port 18, and the oil drain port 18 is provided with a plug 19.

[0024] A bearing retaining ring 4 is provided between the outer ring of the bearing 3 and the rear end of the large diameter section of the stepped hole 11.

[0025] The two ends of the bearing retaining ring 9 rest on the inner ring of the bearing 3 and the labyrinth seal ring 8, respectively, and the tail shaft 12 is provided with a step 121 to block the labyrinth seal ring 8.

[0026] The bearing housing 2 is provided with a plug groove 20 that matches the open end of the dust cover 7.

[0027] The working process of this utility model: This utility model discloses a bearing housing structure for tensioning the tail section of a bucket elevator. During operation, the first layer of sealing—the cooperation of a dust cover 7 and a sealing felt 6—prevents dust accumulation at the second layer of sealing, providing a good environment for this layer. The dust cover 7 is inserted into and fixed in the insertion slot 20, further improving the seal between the bearing housing 2 and the dust cover 7, preventing most dust from entering. The second layer of sealing—the combination of the bearing housing 2 and a labyrinth seal ring 8—forms a labyrinth seal, filled with grease, preventing dust from entering the bearing housing 2. The third layer of sealing—the bearing housing 2, the bearing retaining ring 9, and the skeleton oil seal 10—forms a skeleton oil seal sealing structure, preventing contaminated grease from entering the bearing housing 2 and also preventing dust contamination of the bearing's internal lubricating grease. This three-layer sealing protection ensures that dust cannot enter the bearing housing, thereby improving the bearing's service life. Compared with existing technologies, this design effectively prevents dust from entering the bearing housing and extends the bearing's lifespan.

[0028] When grease needs to be added, open the plug 19, connect the grease gun to the grease nozzle 17, and then perform the grease injection operation. The newly injected grease enters the large diameter section of the stepped hole 11, and the contaminated grease used in the large diameter section of the stepped hole 11 is squeezed into the sealing groove 21 through the connecting hole 14, then enters the dust cover 7, and finally is discharged from the drain port 18.

[0029] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A bearing seat structure for internal tensioning at the tail end of a bucket elevator, characterized in that: The components include a bearing housing end cap (1), a bearing housing (2), a bearing (3), a sealing felt (6), a dust cover (7), a labyrinth seal (8), a bearing retainer (9), and a skeleton oil seal (10). The bearing housing (2) has a stepped hole (11) that is larger at the front and smaller at the back. The large-diameter section and the small-diameter section of the stepped hole (11) are respectively equipped with a bearing (3) and a bearing retainer (9) for mounting the tail shaft (12). The small-diameter section of the stepped hole (11) and the bearing retainer (9) are connected by a skeleton oil seal. The bearing housing (2) is sealed with an oil seal (10). A dust cover (7) is provided at the rear end of the bearing housing (2). The dust cover (7) and the tail shaft (12) are sealed by a sealing felt (6). A labyrinth seal ring (8) is provided at the rear end of the bearing housing (2) inside the dust cover (7) for sealing with the tail shaft (12). A bearing housing end cover (1) is provided at the front end of the bearing housing (2). A bearing fixing plate (13) for fixing the inner ring of the bearing (3) is provided at the front end of the tail shaft (12).

2. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 1, characterized in that: The labyrinth sealing ring (8) is provided with a sealing outer ring (81) and a sealing inner ring (82) located inside the sealing outer ring (81). The bearing seat (2) is provided with two sealing grooves (21) that respectively cooperate with the sealing outer ring (81) and the sealing inner ring (82).

3. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 2, characterized in that: The large-diameter section of the stepped hole (11) is connected to the sealing inner ring (82) through the connecting hole (14) on the bearing seat (2).

4. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 1, characterized in that: The dust cover (7) is provided with a felt cover (5), and the felt cover (5) is provided with an inlay groove (15) for embedding a sealing felt (6).

5. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 1, characterized in that: The lower end of the bearing housing (2) is provided with an oil injection hole (16) that communicates with the large diameter section of the stepped hole (11) behind the bearing (3), and an oil injection nozzle (17) is provided on the oil injection hole (16).

6. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 1, characterized in that: The dust cover (7) is provided with an oil drain port (18), and the oil drain port (18) is provided with a plug (19).

7. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 1, characterized in that: A bearing retaining ring (4) is provided between the outer ring of the bearing (3) and the rear end of the large diameter section of the stepped hole (11).

8. The bearing seat structure for internal tensioning at the tail end of a bucket elevator as described in claim 1, characterized in that: The two ends of the bearing retainer (9) are respectively pressed against the inner ring of the bearing (3) and the labyrinth seal (8), and the tail shaft (12) is provided with a step (121) to block the labyrinth seal (8).

9. A bearing seat structure for tensioning the tail section of a bucket elevator as described in any one of claims 1 to 8, characterized in that: The bearing housing (2) is provided with a plug groove (20) that matches the open end of the dust cover (7).

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