Vibrating screen main shaft structure and vibrating screen
By adopting the design of inner and outer sealing components and sealing end caps in the vibrating screen spindle structure, and using the combination of FB skeleton oil seal and sealing, the problem of poor sealing of the vibrating screen equipment is solved, achieving higher sealing and lower processing costs.
Patent Information
- Application Number
- CN202421380245.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The existing vibrating screen equipment has problems of oil leakage and external dust entering the bearing sealing device, and the existing sealing device is complex in structure, difficult to process and high cost, making it difficult to widely use.
The vibration screen spindle structure design is adopted, including an inner seal assembly and an outer seal assembly, and the combination of FB skeleton oil seal and seal end cap is used to form a multi-layer sealing effect through the cooperation of fasteners and seals, and prevent lubricant leakage and dust from entering.
It improves the sealing of vibrating screen bearings, reduces processing costs, reduces the amount of grease and replacement frequency, and reduces the cost of use.
Smart Images
Figure CN222633826U_ABST
Abstract
Description
Technical Field
[0001] The present application generally relates to the technical field of vibrating screening equipment, and more specifically, to a vibrating screen main shaft structure and a vibrating screen. Background Art
[0002] Vibrating screening equipment is a new type of mechanical equipment that uses the principle of vibration to complete the screening process and improve the efficiency of screening work. It is currently widely used in mining, metallurgy, coal, chemical and other industrial sectors. Current vibrating screens often have bearing oil leakage and external dust entering the bearings. Even if the bearing sealing device used in some vibrating screens can achieve the sealing of the bearings and prevent bearing oil leakage and external dust from entering the bearings to a certain extent, the structure of the sealing device used is too complicated, resulting in difficulty in processing the sealing device and high processing costs, making it difficult to apply to most vibrating screens. Therefore, a new type of vibrating screen main shaft structure with a bearing sealing device is needed to overcome the limitations of the prior art, improve the sealing of the vibrating screen bearings and reduce the processing cost of the vibrating screen bearings. Utility Model Content
[0003] In view of this, an object of the present utility model is to provide a vibrating screen main shaft structure and a vibrating screen, so as to improve the sealing performance of the vibrating screen bearing.
[0004] An embodiment of one aspect of the present application provides a vibrating screen main shaft structure, comprising: a main shaft; a bearing, wherein the bearing is sleeved on the main shaft; a bearing seat, wherein the bearing is installed in the bearing seat; a main shaft shield, wherein the main shaft shield is sleeved on the outside of one end of the bearing seat, and the main shaft passes through the main shaft shield; an inner seal assembly, wherein the inner seal assembly comprises a first seal and an inner seal end cover, wherein the inner seal end cover is sleeved on the main shaft and located between the inner wall of the main shaft shield and the main shaft; the first seal is installed between the inner wall of the inner seal end cover and the main shaft; an outer seal assembly, wherein the outer seal assembly comprises a second seal and an outer seal end cover, wherein the outer seal end cover is installed on the other end of the bearing seat opposite to the end sleeved with the main shaft shield, and sleeved on the main shaft; the second seal is installed between the inner wall of the outer seal end cover and the main shaft.
[0005] In one embodiment, the first sealing component is an FB type skeleton oil seal, including a first end face ring in the shape of an annular flat plate, a first outer diameter ring in the shape of a cylindrical surface, and a first sealing lip in the shape of an entire circular ring and a V-shaped radial cross section; the first outer diameter ring and the first sealing lip are respectively connected to the outer edge and the inner edge of the same side surface of the first end face ring.
[0006] In one embodiment, the inner sealing end cover is provided with a first fixing hole, and the first sealing member is embedded in the first fixing hole, wherein the first end face ring abuts against the bottom wall of the first fixing hole, the first outer diameter ring abuts against the inner side wall of the first fixing hole, and the first sealing lip abuts against the outer wall of the main shaft.
[0007] In one embodiment, the vibration screen main shaft structure further includes a fastener, and the inner sealing end cover is fixedly connected to the main shaft shield via the fastener, so that a first gap is formed between the inner sealing end cover and the bearing seat.
[0008] In one embodiment, the vibration screen main shaft structure further includes a third seal for sealing the gap between the bearing seat and the main shaft shield, and the third seal is sandwiched between the inner wall of the main shaft shield and the outer wall of the bearing seat.
[0009] In one embodiment, the second sealing member is an FB type skeleton oil seal, comprising a second end face ring in the shape of an annular flat plate, a second outer diameter ring in the shape of a cylindrical surface, and a second sealing lip in the shape of an overall circular ring and a V-shaped radial cross section; the second outer diameter ring and the second sealing lip are respectively connected to the outer edge and the inner edge of the same side surface of the second end face ring.
[0010] In one embodiment, the outer sealing end cover is provided with a second fixing hole, and the second sealing member is embedded in the second fixing hole, wherein the second end face ring abuts against the bottom of the second fixing hole, the second outer diameter ring abuts against the inner wall of the second fixing hole, and the second sealing lip abuts against the outer wall of the main shaft.
[0011] In one embodiment, the outer sealing end cover also includes a fastening ring arranged axially along the outer sealing end cover, the annular surface of the fastening ring abuts against the side wall of the outer ring of the bearing, and the side wall of the fastening ring abuts against the inner wall of the bearing seat, so that a second gap is formed between the outer sealing end cover and the bearing.
[0012] In one embodiment, the vibration screen main shaft structure also includes a fourth seal for sealing the gap between the bearing seat and the outer sealing end cover, the fastening ring abuts against the inner wall of the bearing seat, and the fourth seal is clamped between the outer wall of the fastening ring and the inner wall of the bearing seat.
[0013] Another aspect of the present application also provides a vibrating screen, which includes the vibrating screen main shaft structure as described above.
[0014] In the technical solution of the present application, the first seal and the second seal are used to prevent the lubricant in the main shaft structure of the vibrating screen from leaking out of the main shaft cover and to prevent dust outside the main shaft structure of the vibrating screen from entering the main shaft structure of the vibrating screen. The first seal and the second seal improve the sealing performance of the main shaft structure of the vibrating screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 A schematic diagram of the three-dimensional structure of the main shaft structure of the vibrating screen provided in an embodiment of the present application.
[0017] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the inner sealing assembly in the vibrating screen main shaft structure is shown.
[0018] Figure 3 for Figure 1 The cross-sectional structural schematic diagram of the outer sealing assembly in the vibrating screen main shaft structure is shown. DETAILED DESCRIPTION
[0019] The specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the description of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.
[0020] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0021] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the products of the application are usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present application.
[0022] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.
[0023] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.
[0024] See also Figure 1 A vibration screen main shaft structure 100 includes: a main shaft 10; a bearing 20, which is sleeved on the main shaft 10; a bearing seat 30, on which the bearing 20 is mounted; a main shaft shield 40, which is sleeved on the outside of one end of the bearing seat 30, and the bearing seat 30 passes through the main shaft shield 40 to prevent external dust from entering the vibration screen main shaft structure 100. The vibration screen main shaft structure 100 also includes grease, which is used for lubrication and sealing between the various components of the vibration screen main shaft structure 100. Please refer to Figure 1 A vibration screen main shaft structure 100 also includes an inner sealing component 50, including a first sealing member 51 and an inner sealing end cover 52. Among them, one end of the bearing seat 30 in the vibration screen main shaft structure 100 is sleeved in the main shaft shield 40, and the inner sealing component 50 is a sealing component located at one end of the bearing seat 30 close to the middle of the main shaft 10, and the inner sealing component 50 is fixed between the inner wall of the main shaft shield 40 and the main shaft 10. The inner sealing end cover 52 is sleeved on the main shaft 10, and there is a small gap between the inner sealing end cover 52 and the main shaft 10 in the radial direction, which is equivalent to a single-stage labyrinth seal in effect, which is used to prevent grease from leaking from the bearing 20 and can effectively prevent dust from entering. Because the sealing method of the skeleton oil seal is adopted, the axial space occupied by the inner sealing end cover 52 is very small, making the vibration screen main shaft structure 100 more compact, thereby reducing the amount of grease filling the vibration screen main shaft structure 100, and the grease does not need to be frequently replaced, reducing the cost of use. The first sealing member 51 is installed between the inner wall of the inner sealing end cover 52 and the main shaft 10 to eliminate the radial gap between the inner sealing end cover 52 and the main shaft 10 .
[0025] See also Figure 1A vibration screen main shaft structure 100 also includes an outer sealing component 60, which includes a second sealing member 61 and an outer sealing end cover 62. The outer sealing end cover 62 is installed at the other end of the bearing seat 30 opposite to the end on which the main shaft shield 40 is sleeved, and is sleeved on the main shaft 10. Among them, one end of the bearing seat 30 in the vibration screen main shaft structure 100 is sleeved in the main shaft shield 40, and the outer sealing component 60 is a sealing component located at one end of the bearing seat 30 close to the end of the main shaft 10, and the outer sealing component 60 is fixed between the inner wall of the bearing seat 30 and the main shaft 10. There is a very small gap between the outer sealing end cover 62 and the main shaft 10 in the radial direction, which is equivalent to a single-stage labyrinth seal in effect, which is used to prevent grease from leaking from the vibration screen main shaft structure 100 and can effectively prevent dust from the outside of the vibration screen main shaft structure 100 from entering. The axial space occupied by the outer sealing end cover 62 is very small, making the vibration screen main shaft structure 100 more compact, thereby reducing the amount of grease used to fill the vibration screen main shaft structure 100, and the grease does not need to be frequently replaced, thereby reducing the cost of use. The sealing member 61 is installed between the inner wall of the outer sealing end cover 62 and the main shaft 10 to eliminate the radial gap between the outer sealing end cover 62 and the main shaft 10.
[0026] See also Figure 1 , Figure 2 The first sealing member 51 is an FB type skeleton oil seal, which includes a first end face ring 511 in the shape of an annular flat plate, a first outer diameter ring 512 in the shape of a cylindrical surface, and a first sealing lip 513 which is annular as a whole and has a V-shaped radial cross section; the first outer diameter ring 512 and the first sealing lip 513 are respectively connected to the outer edge and the inner edge of the same side surface of the first end face ring 511.
[0027] See also Figure 1 , Figure 2 The inner sealing end cover 52 is provided with a first fixing hole 521, and the first sealing member 51 is embedded in the first fixing hole 521, wherein the first end face ring 511 abuts against the bottom wall of the first fixing hole 521, the first outer diameter ring 512 abuts against the inner side wall of the first fixing hole 521, and the first sealing lip 513 abuts against the outer wall of the main shaft 10. In the present application, the first sealing lip 513 is preferably an elastic sealing lip made of fluororubber, but is not limited to an elastic sealing lip made of fluororubber. Through the interference fit between the inner sealing end cover 52 and the main shaft 10, the first sealing lip 513 is deformed to generate pressure of the first sealing lip 513 on the main shaft 10, so that the first sealing lip 513 can adapt to rotation errors and prevent fluids such as lubricants from passing through.
[0028] See also Figure 1The vibration screen main shaft structure 100 also includes a fastener 70, and the inner sealing end cover 52 is fixedly connected to the side wall of the inner sealing end cover 52 by the fastener 70 and the main shaft shield 40, so that a first gap is formed between the inner sealing end cover 52 and the bearing seat 30. The fixed connection between the inner sealing end cover 52 and the main shaft shield 40 makes the vibration screen main shaft structure 100 compact, thereby reducing the grease filled in the vibration screen main shaft structure 100, and the grease does not need to be frequently replaced, and the use cost is low. In the present application, the fastener 70 is preferably a fixing pin, but is not limited to a fixing pin.
[0029] See also Figure 1 The vibration screen main shaft structure 100 further includes a third seal 80 for sealing the gap between the bearing seat 30 and the main shaft shield 40. The third seal 80 is sandwiched between the inner wall of the main shaft shield 40 and the outer wall of the bearing seat 30, and is used to eliminate the radial gap between the main shaft shield 40 and the bearing seat 30, prevent the grease from leaking from the vibration screen main shaft structure 100, and effectively prevent the dust outside the vibration screen main shaft structure 100 from entering. The third seal 80 is preferably an O-shaped rubber seal ring, but is not limited to an O-shaped rubber seal ring.
[0030] See also Figure 1 , Figure 3 The second sealing member 61 is an FB type skeleton oil seal, comprising an annular flat plate-shaped second end face ring 611, a cylindrical second outer diameter ring 612, and a second sealing lip 613 which is annular as a whole and has a V-shaped radial cross section; the second outer diameter ring 612 and the second sealing lip 613 are respectively connected to the outer edge and the inner edge of the same side surface of the second end face ring 611.
[0031] See also Figure 1 , Figure 3 The outer sealing end cover 62 is provided with a second fixing hole 621, and the second sealing member 61 is embedded in the second fixing hole 621, wherein the second end face ring 612 abuts against the bottom of the second fixing hole 621, the second outer diameter ring 612 abuts against the inner wall of the second fixing hole 621, and the second sealing lip 613 abuts against the outer wall of the main shaft 10. In the present application, the second sealing lip 613 is preferably an elastic sealing lip made of fluororubber, but is not limited to an elastic sealing lip made of fluororubber. Through the interference fit between the outer sealing end cover 62 and the main shaft 10, the second sealing lip 613 is deformed to generate pressure of the second sealing lip 613 on the main shaft 10, so that the second sealing lip 613 can adapt to the rotation error and prevent the passage of fluids such as grease.
[0032] See also Figure 1 , Figure 3The outer sealing end cover 62 also includes a fastening ring 622 arranged along the axial direction of the outer sealing end cover 62, the annular surface of the fastening ring 622 abuts against the side wall of the outer ring of the bearing 20, and the side wall of the fastening ring 622 abuts against the inner wall of the bearing seat 30, so that a second gap is formed between the outer sealing end cover 62 and the bearing 20. The fit and fixation between the outer sealing end cover 62 and the main shaft shield 40 makes the vibration screen main shaft structure 100 compact, thereby reducing the grease filled in the vibration screen main shaft structure 100, and the grease does not need to be frequently replaced, and the use cost is low.
[0033] See also Figure 1 , Figure 3 The vibration screen main shaft structure 100 further includes a fourth seal 90 for sealing the gap between the bearing seat 30 and the outer sealing end cover 62. The fastening ring 622 abuts against the inner wall of the bearing seat 30. The fourth seal 90 is sandwiched between the outer wall of the fastening ring 622 and the inner wall of the bearing seat 30 to eliminate the radial gap between the outer sealing cover 62 and the bearing seat 30, prevent grease from leaking from the vibration screen main shaft structure 100, and effectively prevent dust from entering the vibration screen main shaft structure 100. The fourth seal 90 is preferably an O-shaped rubber seal ring, but is not limited to an O-shaped rubber seal ring.
[0034] The present application also provides a vibrating screen, comprising the vibrating screen main shaft structure 100 described above.
[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.
Claims
1. A vibrating screen main shaft structure, characterized in that: include: Spindle; A bearing, wherein the bearing sleeve is arranged on the main shaft; a bearing seat, in which the bearing is mounted; A spindle shield, which is sleeved on the outside of one end of the bearing seat, and the spindle passes through the spindle shield; An inner sealing assembly, the inner sealing assembly comprising a first sealing member and an inner sealing end cover, the inner sealing end cover being sleeved on the main shaft and being located between the inner wall of the main shaft shield and the main shaft; the first sealing member being installed between the inner wall of the inner sealing end cover and the main shaft; An outer sealing assembly, the outer sealing assembly includes a second sealing member and an outer sealing end cover, the outer sealing end cover is installed on the other end of the bearing seat opposite to the end on which the main shaft shield is sleeved, and is sleeved on the main shaft; the second sealing member is installed between the inner wall of the outer sealing end cover and the main shaft.
2. The main shaft structure of the vibrating screen according to claim 1, characterized in that: The first sealing component is an FB type skeleton oil seal, which includes a first end face ring in the shape of an annular flat plate, a first outer diameter ring in the shape of a cylindrical surface, and a first sealing lip in the shape of an entire circular ring and a V-shaped radial cross section; the first outer diameter ring and the first sealing lip are respectively connected to the outer edge and the inner edge of the same side surface of the first end face ring.
3. The main shaft structure of the vibrating screen according to claim 2, characterized in that: The inner sealing end cover is provided with a first fixing hole, and the first sealing member is embedded in the first fixing hole, wherein the first end face ring abuts against the bottom wall of the first fixing hole, the first outer diameter ring abuts against the inner side wall of the first fixing hole, and the first sealing lip abuts against the outer wall of the main shaft.
4. The main shaft structure of the vibrating screen according to claim 1, characterized in that: The vibration screen main shaft structure also includes a fastener, and the inner sealing end cover is fixedly connected to the main shaft shield through the fastener, so that a first gap is formed between the inner sealing end cover and the bearing seat.
5. The main shaft structure of the vibrating screen according to claim 1, characterized in that: The vibration screen main shaft structure also includes a third seal for sealing the gap between the bearing seat and the main shaft shield, and the third seal is sandwiched between the inner wall of the main shaft shield and the outer wall of the bearing seat.
6. The main shaft structure of the vibrating screen according to claim 1, characterized in that: The second sealing component is an FB type skeleton oil seal, which includes a second end face ring in the shape of an annular flat plate, a second outer diameter ring in the shape of a cylindrical surface, and a second sealing lip which is an overall circular ring and has a V-shaped radial cross-section; the second outer diameter ring and the second sealing lip are respectively connected to the outer edge and the inner edge of the same side surface of the second end face ring.
7. The main shaft structure of the vibrating screen according to claim 6, characterized in that: The outer sealing end cover is provided with a second fixing hole, and the second sealing member is embedded in the second fixing hole, wherein the second end face ring abuts against the bottom of the second fixing hole, the second outer diameter ring abuts against the inner wall of the second fixing hole, and the second sealing lip abuts against the outer wall of the main shaft.
8. The main shaft structure of the vibrating screen according to claim 1, characterized in that: The outer sealing end cover also includes a fastening ring arranged axially along the outer sealing end cover, the annular surface of the fastening ring abuts against the side wall of the bearing outer ring, and the side wall of the fastening ring abuts against the inner wall of the bearing seat, so that a second gap is formed between the outer sealing end cover and the bearing.
9. The main shaft structure of the vibrating screen according to claim 8, characterized in that: The vibration screen main shaft structure also includes a fourth seal for sealing the gap between the bearing seat and the outer sealing end cover, the fastening ring abuts against the inner wall of the bearing seat, and the fourth seal is clamped between the outer wall of the fastening ring and the inner wall of the bearing seat.
10. A vibrating screen, characterized in that: The vibrating screen comprises the vibrating screen main shaft structure according to any one of claims 1-9.