Head bearing seal arrangement

Abstract

This utility model relates to a head bearing sealing device. It solves the technical problem of low bearing service life in existing bearings. It is installed above a bearing housing containing the bearing and includes a head shaft body that passes through the bearing housing and is rotatably connected to the bearing. A packing seat is circumferentially fitted onto one end of the head shaft body extending to the outer side of the upper end of the bearing housing. A separate clamping body is provided between the packing seat and the bearing housing. A sealing cap is fixedly connected to the packing seat and fitted onto the outer side of the head shaft body at the end of the packing seat away from the clamping body. A semi-maze sealing structure is provided between the inner side of the clamping body near the packing seat and the inner side of the packing seat. The advantages are: the semi-maze sealing structure can effectively block dust and moisture, improving the bearing's protective effect and extending its service life. The clamping body and the head shaft body rotate synchronously, facilitating the removal of dust and moisture from the semi-maze sealing structure, further improving the bearing's protective effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of bearing protection equipment, specifically relating to a head bearing sealing device. Background Technology

[0002] Vertical elevators in cement plants play a crucial role in the vertical transport of raw materials, clinker, cement, fly ash, and other materials. Their operating conditions are relatively harsh. The tail section is located on the ground or in a pre-buried pit, while the head section is exposed at a height of approximately 20-50 meters. They are generally installed and used outdoors. Due to the special nature of the materials being transported, the operating environment has a high dust content, making the head bearing highly susceptible to rainwater seepage or dust intrusion during operation. This can lead to bearing failure or damage, and in severe cases, even breakage, significantly impacting customer operations and on-site safety. Currently, the industry still uses internal oil seals and O-rings to protect the head bearing. However, this only adds one layer of protection to the bearing housing and cannot completely prevent rainwater and dust from entering the bearing housing. During bearing operation, these substances can seep into the grease and come into contact with the bearing, easily causing damage and reducing bearing life. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a head bearing sealing device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A head bearing sealing device is disposed above a bearing housing containing a bearing, including a head shaft body that passes through the bearing housing and is rotatably connected to the bearing. A packing seat is circumferentially fitted to one end of the head shaft body extending to the outer side of the upper end of the bearing housing. A split clamping body is provided between the disc-shaped seat and the bearing housing. A sealing cover is fixedly connected to the packing seat and fitted to the outer side of the head shaft body at the end of the packing seat away from the clamping body. A semi-maze sealing structure is provided between the inner side of the clamping body near the packing seat and the inner side of the packing seat. The semi-maze protective structure can effectively block dust and moisture, preventing them from directly contacting the bearing and causing corrosion, thus improving the bearing protection effect. The clamping body can also effectively prevent the accumulation of mud caused by the mixture of rainwater and dust. The clamping body and the head shaft body can easily throw out the mud, effectively preventing mud from seeping into the bearing housing and affecting the bearing, ensuring the bearing protection effect, and improving the bearing service life.

[0005] In the aforementioned head bearing sealing device, the packing seat is rectangular and has a packing seat hole at its center for the head shaft to pass through. Mounting holes are provided at the four corners of the packing seat. The sealing cover has a sealing cover hole at its center for the head shaft to pass through. The sealing cover is connected to the packing seat through a fixed mounting structure. The packing seat hole and the sealing cover hole allow the head shaft to rotate freely through the packing seat and the sealing cover. The positioning mounting hole facilitates the fixed mounting of the packing seat on the housing. The fixed mounting structure improves the connection stability between the sealing cover and the packing seat.

[0006] In the aforementioned head bearing sealing device, the fixed installation structure includes several mounting holes disposed on the packing seat and located around the periphery of the packing seat holes. The sealing cover is provided with several positioning holes that correspond one-to-one with the mounting holes. The mounting holes and positioning holes are connected by mounting bolts. By disposing of the mounting holes and positioning holes around the packing seat and the sealing cover respectively, the connection stability between the sealing cover and the packing seat can be ensured.

[0007] In the aforementioned head bearing sealing device, the semi-maze sealing structure includes a sealing cap annular groove located on the outer side of the sealing cap hole near the end of the sealing cap and near the packing seat. The packing seat has a disc-shaped annular groove on the outer side of the packing seat hole, corresponding to the sealing cap annular groove, near the end of the sealing cap. The packing seat has a cylindrical portion at the end away from the disc-shaped annular groove, with the packing seat hole formed on the inner side of the cylindrical portion. The clamping body has a semi-maze annular channel on the inner side of the end of the clamping body near the packing seat, with the cylindrical portion extending into the semi-maze annular channel. The sealing cap annular groove and the packing seat annular groove facilitate the flow and placement of material dust and moisture. The slurry composed of material dust and moisture is placed in the semi-maze annular channel through the cylindrical portion. The slurry can flow to the outside of the clamping body in the semi-maze annular channel. When the clamping body rotates with the head bearing, it can easily throw out the slurry, effectively preventing the slurry from flowing into the bearing housing and ensuring the bearing's service life.

[0008] In the aforementioned head bearing sealing device, there is a first annular gap between the inner circumferential side of the sealing cover hole and the outer circumferential side of the head shaft body, and a second annular gap between the inner circumferential side of the cylindrical part and the outer circumferential side of the head shaft body. The first and second annular gaps facilitate the free rotation of the head shaft body, and material dust and moisture will flow into the semi-maze annular channel through the first and second annular gaps.

[0009] In the aforementioned head bearing sealing device, the disc-shaped seat annular groove is formed at the upper end of the cylindrical part, and the lower end of the cylindrical part and the bottom of the semi-maze annular channel do not contact each other. The outer circumferential side of the cylindrical part and the inner circumferential side of the semi-maze annular channel do not contact each other, which facilitates the flow of mud. Furthermore, the synchronous rotation of the clamp and the head shaft can throw out the mud in the semi-maze annular channel, effectively preventing mud from penetrating into the bearing seat.

[0010] In the aforementioned head bearing sealing device, the clamp body is composed of two clamp halves with an arc-shaped structure connected by a clamp fixing assembly. One end of each clamp half is provided with an arc-shaped groove, and the arc-shaped grooves are joined together to form the aforementioned semi-maze annular channel. The clamp halves facilitate the clamp body to be fitted onto the head shaft body, and the clamp fixing assembly facilitates the installation and disassembly of the clamp body, thereby improving the loading and unloading efficiency of the clamp body.

[0011] In the aforementioned head bearing sealing device, the clamp fixing assembly includes clamp connecting parts disposed at both ends of the clamp half and extending toward the side away from the head shaft body. The clamp connecting parts are provided with a plurality of clamp fixing holes, and adjacent clamp connecting parts are fixedly connected by fixing bolts passing through the clamp fixing holes. The clamp connecting parts can ensure the connection stability between the clamp half and improve the connection stability between the clamp body and the head shaft body.

[0012] In the aforementioned head bearing sealing device, one side of the clamp half is abutted against the bearing seat, and the clamp connection part and the clamp half are an integral structure, which improves the service life of the clamp body. Furthermore, the bearing seat can support the clamp body, further improving the connection stability of the clamp body.

[0013] In the aforementioned head bearing sealing device, the head shaft body has a cylindrical structure, and the outer circumferential side of the head shaft body abuts against the inner circumferential side of the clamp body, and the head shaft body is rotatably disposed within the aforementioned semi-maze annular channel.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The semi-maze seal structure can effectively block dust and moisture, improve the protection effect of the bearing, and extend the service life of the bearing.

[0016] 2. The clamp body can ensure the connection stability between the clamp body and the head shaft body through the clamp fixing component.

[0017] 3. The synchronous rotation of the clamp body and the head shaft body facilitates the removal of dust and moisture from the semi-maze seal structure, further improving the bearing protection effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural cross-sectional view of the present invention.

[0020] Figure 3 This is an exploded view of the fixed installation structure in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the clamp body in this utility model.

[0022] In the diagram: 1. Head shaft body; 2. Packing seat; 21. Packing seat hole; 22. Positioning mounting hole; 3. Clamp body; 31. Clamp half body; 32. Arc groove; 4. Sealing cap; 41. Sealing cap hole; 5. Semi-maze sealing structure; 5. Sealing cap annular groove; 51. Packing seat annular groove; 52. Cylindrical part; 53. Semi-maze annular channel; 54. Fixed installation structure; 6. Mounting hole; 61. Positioning hole; 62. First annular gap; 7. Second annular gap; 8. Clamp fixing assembly; 9. Clamp connecting part; 91. Clamp fixing hole; 92. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, this is a head bearing sealing device, installed above a bearing housing containing a bearing. It includes a head shaft 1 that passes through the bearing housing and is rotatably connected to the bearing. A packing seat 2 is circumferentially fitted onto one end of the head shaft 1 extending to the outer side of the upper end of the bearing housing. A separate clamping body 3 is provided between the packing seat 2 and the bearing housing. The separate clamping body 3 facilitates installation and disassembly and has a low cost. A sealing cover 4, fixedly connected to the packing seat 2 and fitted onto the outer side of the head shaft 1, is provided at the end of the packing seat 2 away from the clamping body 3. The sealing cover 4 can seal larger volumes... The debris provides a certain degree of protection. A semi-maze sealing structure 5 is provided between the inner circumference of the end of the clamping body 3 near the packing seat 2 and the inner circumference of the packing seat 2. The semi-maze protective structure 5 can effectively block dust and moisture, preventing them from directly contacting the bearing and causing corrosion, thus improving the bearing protection effect. In addition, the clamping body 3 can effectively block the accumulation of mud caused by the mixture of rainwater and dust. The clamping body 3 and the head shaft body 1 can easily throw out the mud, effectively preventing the mud from seeping into the bearing housing and affecting the bearing, ensuring the bearing protection effect and improving the bearing service life.

[0025] Specifically, the packing seat 2 is rectangular and has a packing seat hole 21 in the center for the head shaft 1 to pass through. Positioning mounting holes 22 are provided at the four corners of the packing seat 2. The sealing cover 4 has a sealing cover hole 41 in the center for the head shaft 1 to pass through, and the sealing cover 4 is connected to the packing seat 2 through the fixing mounting structure 6. The packing seat hole 21 and the sealing cover hole 41 allow the head shaft 1 to rotate freely through the packing seat 2 and the sealing cover 4. The positioning mounting hole 22 facilitates the fixing of the packing seat 2 onto the housing. The fixing mounting structure 6 improves the connection stability between the sealing cover 4 and the packing seat 2.

[0026] The fixed installation structure 6 includes several mounting holes 61 located on the packing seat 2 and on the periphery of the packing seat hole 21. The sealing cover 4 has several positioning holes 62 that correspond one-to-one with the mounting holes 61. The mounting holes 61 and the positioning holes 62 are connected by mounting bolts. The mounting holes 61 and the positioning holes 62 are respectively located around the packing seat 2 and the sealing cover 4, which can ensure the connection stability between the sealing cover 4 and the packing seat 2.

[0027] like Figure 2 , Figure 3 , Figure 4 As shown, the semi-maze sealing structure 5 includes a sealing cap annular groove 51 located on the sealing cap 4 near the packing seat 2 and on the outer side of the sealing cap hole 41. The packing seat 2 has a packing seat annular groove 52 located on the outer side of the packing seat hole 21 and corresponding to the sealing cap annular groove 51 at the end near the sealing cap 4. The packing seat 2 has a cylindrical portion 53 at the end away from the packing seat annular groove 52, and the packing seat hole 21 is formed on the inner side of the cylindrical portion 53. The clamping body 3 has a semi-maze annular channel on the inner side of the end near the packing seat 2. 54, and the cylindrical part 53 extends into the semi-maze annular channel 54, wherein the sealing cover annular groove 51 and the packing seat annular groove 52 facilitate the flow and placement of material dust and moisture, and the slurry composed of material dust and moisture is placed in the semi-maze annular channel 54 through the cylindrical part 53. The slurry can flow to the outside of the clamp body 3 in the semi-maze annular channel 54, and when the clamp body 3 rotates with the head shaft body 1, it can easily throw out the slurry, effectively preventing the slurry from flowing into the bearing seat and ensuring the service life of the bearing.

[0028] Furthermore, there is a first annular gap 7 between the inner side of the sealing cap hole 41 and the outer side of the head shaft 1, and a second annular gap 8 between the inner side of the cylindrical part 53 and the outer side of the head shaft 1. The head shaft 1 can rotate freely through the first annular gap 7 and the second annular gap 8, and material dust and moisture will flow into the semi-maze annular channel 54 through the first annular gap 7 and the second annular gap 8.

[0029] The packing seat annular groove 52 is formed on the upper end of the cylindrical part 53 and the lower end of the cylindrical part 53 does not contact the bottom of the semi-maze annular channel 54. The outer side of the cylindrical part 53 and the inner side of the semi-maze annular channel 54 do not contact each other, which facilitates the flow of mud. The synchronous rotation of the clamp body 3 and the head shaft body 1 can throw out the mud in the semi-maze annular channel 54, which can effectively prevent the mud from penetrating into the bearing seat.

[0030] Combination Figure 1 , Figure 2 , Figure 4 As shown, the clamp body 3 is formed by two clamp halves 31 with an arc-shaped structure connected by the clamp fixing assembly 9. One end of each clamp half 31 is provided with an arc-shaped groove 32, and the arc-shaped grooves 32 are spliced ​​together to form the above-mentioned semi-maze annular channel 54. The clamp half 31 makes it easy to put the clamp body 3 onto the head shaft body 1, and the clamp fixing assembly 9 makes it easy to install and disassemble the clamp body 3, thereby improving the loading and unloading efficiency of the clamp body 3.

[0031] The clamp fixing assembly 9 includes clamp connecting parts 91 provided at both ends of the clamp half 31 and extending toward the side away from the head shaft body 1. The clamp connecting parts 91 are provided with a plurality of clamp fixing holes 92, and adjacent clamp connecting parts 91 are fixedly connected by fixing bolts passing through the clamp fixing holes 92. The clamp connecting parts 91 can ensure the connection stability between the clamp half 31 and the connection stability between the clamp body 3 and the head shaft body 1.

[0032] Specifically, the clamp half 31 is mounted against the bearing seat on one side, and the clamp connection part 91 and the clamp half 31 are an integral structure, which improves the service life of the clamp body 3. The bearing seat can also support the clamp body 3, further improving the connection stability of the clamp body 3.

[0033] Combination Figure 1 , Figure 4 As shown, the head shaft 1 has a cylindrical structure, and the outer side of the head shaft 1 abuts against the inner side of the clamp body 3, and the head shaft 1 is rotatably set in the above-mentioned semi-maze annular channel 54.

[0034] The principle of this embodiment is as follows: the packing seat 2 and the sealing cover 4 are connected by the packing seat hole 21 and the sealing cover hole 41, which facilitates the rotation of the head shaft 1. The material dust and moisture can be introduced into the semi-maze sealing structure 5 through the first annular gap 7 and the second annular gap 8. The clamp body 3 is fixedly installed on the head shaft 1 by the clamp fixing assembly 9 and rotates synchronously with the head shaft. When the material dust and horizontal flow enter the semi-maze annular channel 54, the clamp body 3 can throw out the material dust and moisture by rotating with the head shaft 1, ensuring the protection effect of the bearing and improving the service life of the bearing.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as head shaft body 1, packing seat 2, packing seat hole 21, positioning mounting hole 22, clamp body 3, clamp half body 31, arc groove 32, sealing cover 4, sealing cover hole 41, semi-maze sealing structure 5, sealing cover annular groove 51, packing seat annular groove 52, cylindrical part 53, semi-maze annular channel 54, fixed installation structure 6, mounting hole 61, positioning hole 62, first annular gap 7, second annular gap 8, clamp fixing assembly 9, clamp connecting part 91, clamp fixing hole 92, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A head bearing sealing device, disposed above a bearing housing having a bearing, comprising a head shaft (1) passing through the bearing housing and rotatably connected to the bearing, characterized in that, The head shaft (1) extends to the outer side of the upper end of the bearing seat and is fitted with a packing seat (2) on the outer side. A separate clamping body (3) is provided between the packing seat (2) and the bearing seat. A sealing cover (4) is provided at the end of the packing seat (2) away from the clamping body (3) and is fixedly connected to the packing seat (2) and fitted on the outer side of the head shaft (1). A semi-maze sealing structure (5) is provided between the inner side of the clamping body (3) near the packing seat (2) and the inner side of the packing seat (2).

2. The head bearing sealing device according to claim 1, characterized in that, The packing seat (2) is rectangular and has a packing seat hole (21) in the center for the head shaft (1) to pass through. Positioning mounting holes (22) are provided at the four corners of the packing seat (2). The sealing cover (4) has a sealing cover hole (41) in the center for the head shaft (1) to pass through, and the sealing cover (4) is connected to the packing seat (2) through a fixed mounting structure (6).

3. The head bearing sealing device according to claim 2, characterized in that, The fixed installation structure (6) includes several mounting holes (61) on the packing seat (2) and located around the packing seat hole (21). The sealing cover (4) is provided with several positioning holes (62) that correspond one-to-one with the mounting holes (61). The mounting holes (61) and positioning holes (62) are connected by mounting bolts.

4. A head bearing sealing device according to claim 2 or 3, characterized in that, The semi-maze sealing structure (5) includes a sealing cap annular groove (51) located on the sealing cap (4) near the packing seat (2) and on the outer side of the sealing cap (4) hole. The packing seat (2) near the sealing cap (4) has a packing seat annular groove (52) located on the outer side of the packing seat hole (21) and corresponding to the sealing cap annular groove (51). The packing seat (2) away from the packing seat annular groove (52) has a cylindrical portion (53) and the packing seat hole (21) is formed on the inner side of the cylindrical portion (53). The clamping body (3) near the packing seat (2) has a semi-maze annular channel (54) on the inner side of the circumference, and the cylindrical portion (53) extends into the semi-maze annular channel (54).

5. A head bearing sealing device according to claim 4, characterized in that, The sealing cap (4) has a first annular gap (7) between the inner side of the hole and the outer side of the head shaft (1), and the cylindrical part (53) has a second annular gap (8) between the inner side of the cylindrical part (53) and the outer side of the head shaft (1).

6. A head bearing sealing device according to claim 4, characterized in that, The packing seat annular groove (52) is formed on the upper end of the cylindrical part (53) and the lower end of the cylindrical part (53) does not contact the bottom of the semi-maze annular channel (54). The outer circumferential side of the cylindrical part (53) and the inner circumferential side of the semi-maze annular channel (54) do not contact each other.

7. A head bearing sealing device according to claim 4, characterized in that, The clamp body (3) is formed by connecting two clamp halves (31) with an arc structure through a clamp fixing component (9). One end of each clamp half (31) is provided with an arc groove (32), and the arc grooves (32) are joined together to form the above-mentioned semi-maze annular channel (54).

8. A head bearing sealing device according to claim 7, characterized in that, The clamp fixing assembly (9) includes clamp connecting parts (91) provided at both ends of the clamp half (31) and extending toward the side away from the head shaft (1). The clamp connecting parts (91) are provided with a plurality of clamp fixing holes (92), and adjacent clamp connecting parts (91) are fixedly connected by fixing bolts passing through the clamp fixing holes (92).

9. A head bearing sealing device according to claim 8, characterized in that, The clamp half (31) is mounted on one side against the bearing seat, and the clamp connection part (91) and the clamp half (31) are an integral structure.

10. A head bearing sealing device according to claim 4, characterized in that, The head shaft (1) has a cylindrical structure, and the outer side of the head shaft (1) abuts against the inner side of the clamp body (3), and the head shaft (1) is rotatably disposed in the above-mentioned semi-maze annular channel (54).

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