Oil deflector ring and induced draft fan applying same

Abstract

The utility model discloses an oil retainer and an induced draft fan applying the same, and relates to the technical field of bearings, the oil retainer comprises at least two arc rings used for being spliced to form the oil retainer, the adjacent arc rings are detachably connected, positioning threaded holes are formed in the arc rings in the radial direction in a penetrating mode, and the positioning threaded holes are in threaded connection with threaded jacking pieces; according to the utility model, when the oil retainer is broken and damaged to cause oil leakage, the oil retainer can be conveniently taken out in the radial direction without disassembling the bearing only by disassembling the upper cover of the bearing box, unlocking the threaded jacking piece and disassembling the connection between the circular arc rings, and the splicing installation can be completed in the radial direction during installation, so that the assembly efficiency is greatly improved. The overall replacement convenience is high, the maintenance efficiency can be effectively improved, the working intensity is reduced, and meanwhile the connection stability of the split type oil retainer and the main shaft can be improved through the cooperation of the positioning threaded holes and the threaded jacking pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an oil retaining ring and an induced draft fan using the same. Background Art

[0002] Bearings are an important component in contemporary mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. The oil retaining ring is a sealing component commonly used in the bearing field to prevent the lubricating oil from being thrown out. Taking the induced draft fan as an example, bearing boxes need to be set at both ends of its rotating main shaft to provide rotational support for the rotating main shaft. The bearings of the bearing box are rotatably set on the rotating main shaft. The oil retaining rings are installed at both ends of the bearing box to prevent the lubricating oil in the bearing box from being thrown out, ensuring that the bearing has sufficient lubricating oil to provide it with a good lubrication effect, thereby reducing friction.

[0003] However, the existing induced draft fan oil retaining ring is a cast iron part. Since it is an integral casting, it is easy to break after being stressed during installation and adjustment, which may lead to oil leakage from the bearing box, bearing damage, and even serious damage to the induced draft fan and other major accidents. When replacing the integrally cast oil retaining ring, the bearing box must be disassembled and the bearing removed. If the broken oil retaining ring is on the coupling side, the pair of wheels must also be removed. The maintenance process is extremely complicated, the maintenance work is intensive, and the maintenance time is long. In addition, the replacement work requires the damaged removal of the existing installed bearings, causing unnecessary economic losses.

[0004] Therefore, people are in urgent need of an oil retaining ring that can improve maintenance efficiency and reduce work intensity while ensuring stable connection. Summary of the invention

[0005] The purpose of the utility model is to provide an oil deflector ring and an induced draft fan using the same, so as to solve the problems existing in the above-mentioned prior art. The split design of the oil deflector ring cooperates with the positioning threaded holes and the threaded tightening parts, which can improve the maintenance efficiency and reduce the work intensity on the basis of ensuring the stability of the connection.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides an oil deflector ring, comprising at least two arc rings for splicing to form the oil deflector ring, the adjacent arc rings are detachably connected, and the arc rings are radially penetrated with positioning threaded holes, and the positioning threaded holes are threadedly connected with threaded tightening parts.

[0007] Preferably, two arc rings are provided, and the central angle of the arc ring is 180°.

[0008] Preferably, a connecting plate is correspondingly provided at one end of the adjacent arc rings away from the oil-blocking side, and the connecting plates of the adjacent arc rings are connected by bolts.

[0009] Preferably, the arc ring includes a first arc cylinder and a second arc cylinder which are coaxially arranged, the outer diameter of the first arc cylinder is smaller than the inner diameter of the second arc cylinder, the inner diameter of the first arc cylinder matches the main shaft, the outer circumferential wall of the first arc cylinder is connected to the inner circumferential wall of the second arc cylinder through an arc connecting piece, one end of the first arc cylinder and the second arc cylinder form an arc groove body, adjacent arc groove bodies are spliced ​​to form an annular groove body for oil blocking, the other end of the first arc cylinder extends out of the second arc cylinder to form a connecting part, and the connecting part is provided with the positioning threaded hole.

[0010] Preferably, the connecting plate is flush with the open end surface of the second arc cylinder, the connecting plate is arranged on the arc connecting piece, and one end of the connecting plate close to the connecting portion is connected to the connecting portion.

[0011] Preferably, one end of the connecting plate away from the arc connecting piece is flush with the end surface of the first arc cylinder. Preferably, the first arc cylinder, the second arc cylinder and the arc connecting piece are integrally arranged.

[0012] Preferably, three positioning threaded holes are provided on the oil retaining ring, and the three positioning threaded holes are distributed in an equilateral triangle.

[0013] Preferably, the circular arc ring is a steel circular arc ring.

[0014] The utility model also provides an induced draft fan, comprising the above-mentioned oil retaining ring, a bearing box, a main shaft and an impeller, the bearing boxes are arranged at both ends of the main shaft, the middle part of the main shaft is drivingly connected to the impeller, one axial side of the impeller is the air inlet of the induced draft fan, the bearing of the bearing box is rotatably arranged on the main shaft, and the oil retaining rings are arranged at both axial ends of the bearing box.

[0015] Compared with the prior art, the utility model mainly achieves the following technical effects:

[0016] When the oil retaining ring is damaged and oil leakage occurs, to replace the oil retaining ring, you only need to remove the upper cover of the bearing box. By unlocking the threaded fasteners and removing the connection between the arc rings, the oil retaining ring can be conveniently taken out radially without removing the bearing. It can also be installed by radial splicing. The overall replacement is convenient, which can effectively improve the maintenance efficiency and reduce the work intensity. At the same time, the cooperation of the positioning threaded holes and the threaded fasteners can improve the connection stability between the split oil retaining ring and the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is the front view of the oil deflector ring of the utility model;

[0019] Figure 2 This is a rear view of the oil deflector ring of the utility model;

[0020] Figure 3 It is a top view of the oil deflector ring of the utility model;

[0021] Figure 4 This is a bottom view of the oil deflector ring of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the induced draft fan of the utility model;

[0023] Among them, 1. arc ring; 2. first arc cylinder; 3. second arc cylinder; 4. arc connector; 5. connecting plate; 6. connecting bolt; 7. positioning threaded hole; 8. connecting part; 9. supporting bearing box; 10. thrust bearing box; 11. main shaft; 12. impeller; 13. coupling; 14. air inlet; 15. bearing; 16. oil retaining ring; 17. base. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The purpose of the utility model is to provide an oil deflector ring and an induced draft fan using the same, so as to solve the problems existing in the prior art. The split design of the oil deflector ring cooperates with the positioning threaded holes and the threaded tightening parts, which can improve the maintenance efficiency and reduce the work intensity on the basis of ensuring the stability of the connection.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Please refer to Figures 1 to 5As shown, an oil retaining ring is provided, comprising at least two arc rings 1 for splicing to form an oil retaining ring 16, and adjacent arc rings 1 are detachably connected by means of bolts or buckles. Preferably, the detachable connection is located at the two end faces of the opening of the arc ring 1, and the two end faces of the opening are connected to effectively improve the connection strength. The detachable connection method is preferably bolt connection, and a positioning threaded hole 7 is radially through-set on the arc ring 1. The positioning threaded hole 7 is threadedly connected to a threaded jacking piece, which is locked by continuously screwing the threaded jacking piece into the threaded jacking piece. The bottom contacts and squeezes the main shaft 11, thereby increasing the friction force, and further increasing the stability of the overall oil retaining ring 16 connected to the main shaft 11. In actual use: when the oil retaining ring 16 is broken and damaged and oil leakage occurs, replacing the oil retaining ring 16 only requires removing the upper cover of the bearing box. By unlocking the threaded fasteners and removing the connection between the arc rings 1, the oil retaining ring 16 can be conveniently taken out radially without removing the bearing 15. During installation, the splicing and installation can also be completed radially. The overall replacement is convenient, which can effectively improve the maintenance efficiency and reduce the work intensity.

[0028] The threaded fastener may be a bolt or a screw.

[0029] In this embodiment, two arc rings 1 are provided, and the center angle of a single arc ring 1 is 180°; when three arc rings 1 are provided, the center angle of a single arc ring 1 is 120°; when the number of arc rings 1 is greater than three, the center angle of a single arc ring 1 is equal to 360° divided by the number of arc rings 1.

[0030] In this embodiment, the arc rings 1 are connected by bolts, and the specific structure of the bolt connection is: a connecting plate 5 is correspondingly provided at one end of the adjacent arc ring 1 away from the oil retaining side, and the connecting plates 5 of the adjacent arc rings 1 are bolted together by connecting bolts 6, wherein the oil retaining side refers to the side of the oil retaining ring 16 close to the lubricating oil. The connecting plates 5 of the adjacent arc rings 1 are parallel to each other, and after the arc rings 1 are spliced, the two connecting plates 5 are butt-jointed together to provide a stable foundation for the connection.

[0031] The specific structure of the arc ring 1 includes a first arc cylinder 2 and a second arc cylinder 3 which are coaxially arranged. The outer diameter of the first arc cylinder 2 is smaller than the inner diameter of the second arc cylinder 3. The inner diameter of the first arc cylinder 2 matches the main shaft 11. The outer circumferential wall of the first arc cylinder 2 is connected to the inner circumferential wall of the second arc cylinder 3 through an arc connector 4. The arc connector 4 can be arranged in the middle of the second arc cylinder 3 or at the end of the second arc cylinder 3. One end of the first arc cylinder 2 forms an arc groove body with the second arc cylinder 3. Adjacent arc groove bodies are spliced ​​to form an annular groove body for oil blocking. The other end of the first arc cylinder 2 extends out of the second arc cylinder 3 to form a connecting portion 8. A positioning threaded hole 7 is provided on the connecting portion 8. The setting of the connecting portion 8 can provide an operating space for the threaded tightening member.

[0032] Preferably, in order to improve the structural strength, a connecting plate 5 is arranged flush with the open end surface of the second arc cylinder 3, the connecting plate 5 is arranged on the arc connector 4, and one end of the connecting plate 5 close to the connecting part 8 is connected to the connecting part 8, and the connection method between the connecting plate 5 and the arc connector 4 and between the connecting plate 5 and the connecting part 8 can be welding.

[0033] One end of the connecting plate 5 away from the arc connector 4 is flush with the end surface of the first arc tube 2, extending the connection length between the connecting plate 5 and the connecting portion 8 of the first arc tube 2, further improving the structural strength while taking into account the aesthetics.

[0034] In order to improve the structural strength of the circular arc ring 1, the first circular arc cylinder 2, the second circular arc cylinder 3 and the circular arc connecting member 4 are integrally arranged.

[0035] In this embodiment, three positioning threaded holes 7 are provided on the oil retaining ring 16. The three positioning threaded holes 7 are distributed in an equilateral triangle. The multi-point positioning method is conducive to improving the connection stability.

[0036] The circular arc ring 1 is a steel circular arc ring 1 , and the connecting plate 5 is also a steel connecting plate 5 .

[0037] The utility model also provides an induced draft fan, comprising the above-mentioned oil retaining ring 16, a bearing box, a main shaft 11 and an impeller 12, wherein bearing boxes are arranged at both ends of the main shaft 11, one side is a supporting bearing box 9, and the other side is a thrust bearing box 10, the bearing box is arranged on a base 17, the middle part of the main shaft 11 is transmission connected with the impeller 12, one end of the main shaft 11 is transmission connected with the driving device through a coupling 13, the impeller 12 is arranged in a casing of the induced draft fan, one axial side of the impeller 12 is an air inlet 14 of the induced draft fan, the bearing 15 of the bearing box is rotatably arranged on the main shaft 11, and oil retaining rings 16 are arranged at both axial ends of the bearing box.

[0038] Adaptive changes made according to actual needs are all within the protection scope of this utility model.

[0039] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0040] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An oil slinger ring, characterized in that: It comprises at least two circular arc rings for splicing to form an oil retaining ring, the adjacent circular arc rings are detachably connected, the circular arc rings are radially provided with positioning threaded holes, and the positioning threaded holes are threadedly connected with threaded jacking pieces.

2. The oil slinger ring according to claim 1, characterized in that: There are two circular arc rings, and the central angle of the circular arc ring is 180°.

3. The oil slinger ring according to claim 1, characterized in that: A connecting plate is correspondingly provided at one end of the adjacent arc ring away from the oil-blocking side, and the connecting plates of the adjacent arc rings are connected by bolts.

4. The oil slinger ring according to claim 3, characterized in that: The arc ring includes a first arc cylinder and a second arc cylinder which are coaxially arranged. The outer diameter of the first arc cylinder is smaller than the inner diameter of the second arc cylinder. The inner diameter of the first arc cylinder matches the main shaft. The outer circumferential wall of the first arc cylinder is connected to the inner circumferential wall of the second arc cylinder through an arc connector. One end of the first arc cylinder forms an arc groove body with the second arc cylinder. Adjacent arc groove bodies are spliced ​​to form an annular groove body for oil blocking. The other end of the first arc cylinder extends out of the second arc cylinder to form a connecting portion. The positioning threaded hole is provided on the connecting portion.

5. The oil slinger ring according to claim 4, characterized in that: The connecting plate is flush with the open end surface of the second arc cylinder, the connecting plate is arranged on the arc connecting piece, and one end of the connecting plate close to the connecting portion is connected to the connecting portion.

6. The oil slinger ring according to claim 4, characterized in that: One end of the connecting plate away from the arc connecting piece is flush with the end surface of the first arc cylinder.

7. The oil slinger ring according to claim 4, characterized in that: The first arc cylinder, the second arc cylinder and the arc connecting piece are integrally arranged.

8. The oil slinger ring according to claim 1, characterized in that: The oil retaining ring is provided with three positioning threaded holes, and the three positioning threaded holes are distributed in an equilateral triangle.

9. The oil slinger ring according to any one of claims 1 to 8, characterized in that: The circular arc ring is a steel circular arc ring.

10. An induced draft fan, characterized in that: It comprises an oil retaining ring, a bearing box, a main shaft and an impeller as described in any one of claims 1 to 9, wherein the bearing boxes are arranged at both ends of the main shaft, the middle part of the main shaft is drivingly connected to the impeller, one axial side of the impeller is an air inlet of the induced draft fan, the bearing of the bearing box is rotatably arranged on the main shaft, and the oil retaining rings are arranged at both axial ends of the bearing box.

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