CN114320994A

CN114320994A - Oil seal flange

Info

Publication number: CN114320994A
Application number: CN202011079732.6A
Authority: CN
Inventors: 陆锋
Original assignee: Yueneng Suzhou Power Technology Co ltd
Current assignee: Yueneng Suzhou Power Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2022-04-12

Abstract

The application discloses an oil seal flange which is arranged outside a bearing and used for preventing the bearing from leaking oil, the bearing inner ring is provided with an output shaft body which passes through the axle center of the oil seal flange, second annular air cavities which are uniformly arranged are formed on the inner side of the oil seal flange along the axial direction, each second annular air cavity comprises a second air storage cavity departing from the output shaft body and a second air guide cavity close to the output shaft body, the second air guide cavities are provided with second slopes inclining from the second air storage cavities to the bearing, each second air guide cavity is formed between two adjacent annular blocking pieces, annular hook bodies protruding towards the outer side of the bearing are formed at the inner ends of the annular blocking pieces close to the bearing, an annular convex body attached to the annular hook body is formed on the outer surface of the output shaft body, and an annular gap is formed between the annular convex body and the annular hook body. The invention prevents the oil stain from flowing out and in the static state, and further ensures the sealing.

Description

Oil seal flange

Technical Field

The application relates to MVR motor drive, in particular to an oil seal flange.

Background

The multiple recycle of secondary steam is equipped to state widely promotes now, in secondary steam retrieves and equips, generally need use motor drive impeller structure, how to export impeller stable in structure the problem of each enterprise's research always.

Disclosure of Invention

The invention aims to provide an oil seal flange.

In order to achieve the above object, the present invention provides the following technical solutions.

The embodiment of the application discloses an oil seal flange which is arranged on the outer side of a bearing and used for preventing the bearing from leaking oil, the bearing inner ring is provided with an output shaft body which passes through the axle center of the oil seal flange, second annular air cavities which are uniformly arranged are formed on the inner side of the oil seal flange along the axial direction, each second annular air cavity comprises a second air storage cavity departing from the output shaft body and a second air guide cavity close to the output shaft body, the second air guide cavities are provided with second slopes inclining from the second air storage cavities to the bearing, each second air guide cavity is formed between two adjacent annular blocking pieces, annular hook bodies protruding towards the outer side of the bearing are formed at the inner ends of the annular blocking pieces close to the bearing, an annular convex body attached to the annular hook body is formed on the outer surface of the output shaft body, and an annular gap is formed between the annular convex body and the annular hook body.

Preferably, in the oil seal flange described above, an end surface of the annular convex body near the bearing is perpendicular to an axial direction of the output shaft body.

Preferably, in the oil seal flange described above, an end surface of the annular convex body facing away from the bearing is inclined outward of the bearing from the output shaft body.

Preferably, in the oil seal flange described above, a second gap is formed between the inner side surface of the second air guide chamber and the output shaft body.

Preferably, in the oil sealing flange described above, the oil sealing flange is fixedly attached to the third flange by a plurality of fourth bolts arranged in a circumferential direction.

Compared with the prior art, the annular convex body and the annular hook body in the technical scheme prevent oil stains from flowing out and flowing into the oil stains in a static state, and sealing is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a high seal impeller attachment configuration in an embodiment of the present invention;

fig. 2 shows an enlarged view of fig. 1 at circle a.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, a high-sealing impeller connection structure 100 includes an output shaft 101 and an impeller 102 fixedly connected to the output shaft 101, the impeller 102 is fixedly connected to an end surface of the output shaft 101 through a first bolt 103, the output shaft 101 is supported by two first flanges 104 disposed opposite to each other, the first flanges 104 are rotatably connected to the output shaft 101 through a bearing 105, the two first flanges 104 are simultaneously and fixedly mounted on a frame 106, a second flange 107 and a third flange 108 are sequentially and fixedly connected to an outer side of the output shaft 101 between the impeller 102 and the first flanges 104, inner sides of the second flange 107 and the third flange 108 are respectively connected to a first oil seal flange 300 and a second oil seal flange 200, and the output shaft 101 sequentially passes through an axis of the first oil seal flange 300 and an axis of the second oil seal flange 200. The first oil seal flange 300 is fixedly mounted to the second flange 107 by a plurality of second bolts 111 arranged in a circumferential direction. The second flange 107 is fixedly attached to a third flange 108 by a plurality of third bolts 109 arranged in a circumferential direction. The second oil seal flange 200 is fixedly mounted to the third flange 108 by a plurality of fourth bolts 110 arranged in a circumferential direction. A third flange 108 is formed on one side of the frame 106.

In this embodiment, the direct fixed connection of impeller is in the output axis body, and the output axis body is installed in the bearing, realizes sealed through two sealing flange between impeller and the bearing, and two sealing flange are fixed mutually through the outer ring of the fixed and bearing of being connected of a plurality of flanges, realize high sealing connection, can not have the greasy dirt when the high-speed rotation of output axis body and leak.

Further, a first annular air chamber 301 is formed inside the first oil sealing flange 300 along the axial direction, and the first annular air chamber 301 is formed with a first slope 302 inclined toward the impeller 102.

In this embodiment, when the output axis body rotates at a high speed, driven the flow of surrounding gas, form the high pressure in the annular air cavity, stopped the greasy dirt and leaked, the existence on first slope has made things convenient for high-pressure gas to the effect of lubricating oil, further prevents the greasy dirt discharge.

Further, a first gap 303 is formed between the inner side surface of the first annular air chamber 301 and the output shaft body 101.

In this embodiment, mechanical friction is prevented from damaging the output shaft.

Further, the second oil sealing flange 200 is installed outside the bearing 105 and used for preventing oil leakage of the bearing 105, an output shaft body 101 is arranged in the inner ring of the bearing 105, the output shaft body 101 penetrates through the axis of the second oil sealing flange 200, second annular air chambers 201 which are uniformly arranged are formed in the inner side of the second oil sealing flange 200 along the axial direction, each second annular air chamber 201 comprises a second air storage chamber 202 which deviates from the output shaft body 101 and a second air guide chamber 203 which is close to the output shaft body 101, each second air guide chamber 203 is formed with a second slope 204 which inclines towards the bearing 105 from the second air storage chamber 202, each second air guide chamber 203 is formed between two adjacent annular baffle plates 206, an annular hook body 207 which protrudes towards the outer side of the bearing 105 is formed at the inner end of the annular baffle plate 206 which is close to the bearing 105, an annular convex body 208 which is attached to the annular hook body 207 is formed on the outer surface of the output shaft body 101, and an annular gap 209 is formed between the annular convex body 208 and the annular hook body 207. The end surface of the annular convex body 208 near the bearing 105 is perpendicular to the axial direction of the output shaft body 101. The end surface of the annular projection 208 facing away from the bearing 105 is inclined outward of the bearing 105 from the output shaft body 101. The second oil seal flange 200 is fixedly mounted to the third flange 108 by a plurality of fourth bolts 110 arranged circumferentially.

In the embodiment, after the output shaft body rotates at a high speed, the surrounding gas is driven to flow, and due to the existence of the second annular gas cavity, the gas forms high pressure in the second annular gas cavity in the process that the output shaft body does not stop rotating, so that the outflow of bearing lubricating oil is prevented; because the second air guide cavity forms a slope inclined towards the bearing, the effect of high-pressure gas on lubricating oil is facilitated, sealing is further ensured, and the lubricating oil is prevented from being discharged. The existence of the annular convex body and the annular hook body prevents the oil stain from flowing out and into the oil stain box in a static state, and further ensures the sealing.

Further, a second gap 205 is formed between the inner side surface of the second air guide cavity 203 and the output shaft body 101.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims

1. An oil seal flange is arranged on the outer side of a bearing and used for preventing the bearing from leaking oil, an output shaft body is arranged on the inner ring of the bearing, the output shaft body penetrates through the axle center of the oil seal flange, second annular air cavities which are uniformly arranged are formed on the inner side of the oil seal flange along the axial direction, the second annular air cavity comprises a second air storage cavity departing from the output shaft body and a second air guide cavity close to the output shaft body, the second air guide cavity is provided with a second slope inclining from the second air storage cavity to the bearing, it is characterized in that each second air guide cavity is formed between two adjacent annular baffle plates, an annular hook body which protrudes to the outer side of the bearing is formed at the inner end of the annular baffle plate close to the bearing, an annular convex body attached to the annular hook body is formed on the outer surface of the output shaft body, and an annular gap is formed between the annular convex body and the annular hook body.

2. An oil sealing flange as defined in claim 1, wherein an end surface of said annular boss near said bearing is perpendicular to an axial direction of said output shaft body.

3. An oil sealing flange as defined in claim 1, wherein the end surface of said annular boss facing away from said bearing is inclined outwardly of said bearing from said output shaft body.

4. An oil sealing flange as defined in claim 1, wherein a second clearance is formed between the inner side surface of the second air guide chamber and the output shaft body.

5. An oil sealing flange as defined in claim 1, wherein the oil sealing flange is fixedly mounted to the third flange by a plurality of fourth bolts arranged circumferentially.