Oil collecting flange structure applied to vacuum pump

Abstract

The utility model belongs to the field of dry-type screw vacuum pump sealing, and particularly relates to an oil collecting flange structure applied to a vacuum pump, which comprises a bearing chamber, a bearing seat fixedly connected to the inner wall of the bearing chamber, a flange arranged on the outer side of the bearing seat, a bearing arranged on the inner wall of the bearing seat, and an oil collecting flange arranged on the bearing seat. The outer diameter of the circular groove is slightly larger than that of the oil flinger, the width of the circular groove can be consistent with the width of the wedge-shaped notch, the circular groove serves as a transition area, lubricating media are preliminarily collected and drained, and the lubricating media can be better collected and drained through the drainage effect of the circular groove. The amount of lubricating oil collected by the wedge-shaped notch can be greatly increased, the lubricating oil collected by the flange flows into the kidney-shaped groove, corresponding to the wedge-shaped notch, of the bearing seat and then flows to the bearing through the through hole, the magnet is placed in the kidney-shaped groove and used for adsorbing impurities in the lubricating oil flowing through the bearing seat, the through hole and the kidney-shaped groove can be prevented from being blocked, and the service life of the bearing seat is prolonged. Meanwhile, the abrasion to the bearing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of dry screw vacuum pump sealing, specifically an oil collecting flange structure applied to vacuum pumps. Background Technology

[0002] In the working mechanism of a vacuum pump, the use of bearings plays a crucial role. To ensure that the bearings maintain a smooth and low-friction state during high-speed operation, lubricating oil is usually injected into the bearing chamber or working environment. This also effectively extends the service life of the bearings. During operation, the bearings generate heat. Excessive lubricating oil will affect heat dissipation and increase the resistance encountered during rotation. Too much lubricating oil will also cause excessive pressure in the bearing chamber, leading to sealing leaks. Therefore, the amount of lubricating oil injected into the bearing chamber is not too much. In order to ensure that the bearings can fully and evenly contact the lubricating oil during operation, an oil slinger is installed at the outer end of the bearing. It rotates synchronously with the gear and splashes the lubricating oil below the bearing position to any position in the bearing chamber, thus giving full play to the lubrication function.

[0003] Due to the limited space in the bearing chamber, the bearing position is not easily contacted by splashed lubricating oil, which affects the bearing's lifespan. Existing technology generally addresses this issue by creating a wedge-shaped groove at the top of the bearing, similar to a funnel, to collect the splashed lubricating oil, which then flows down to the bearing position below by gravity. However, the collection capacity of such a wedge-shaped groove is relatively limited, and the problem of insufficient lubricating oil volume still exists. Therefore, to address the above problems, an oil collection structure flange for use in vacuum pumps is proposed. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model proposes an oil collecting flange structure for use in vacuum pumps.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an oil collecting flange structure applied to a vacuum pump, including a bearing chamber, a bearing seat fixedly connected to the inner wall of the bearing chamber, a flange provided on the outer side of the bearing seat, a bearing provided on the inner wall of the bearing seat, and a rotating shaft fixedly connected to the middle of the bearing chamber.

[0006] Preferably, the bearing housing further includes an inner ring, and the outer ring of the bearing housing is fixedly provided with the inner ring;

[0007] Preferably, the inner ring further includes a wedge-shaped notch, the inner ring body has a wedge-shaped notch, and the bearing seat further includes a waist-shaped groove, the bearing seat has a waist-shaped groove at the position corresponding to the wedge-shaped notch;

[0008] Preferably, the waist-shaped groove further includes a through hole, and the bottom of the waist-shaped groove is provided with a through hole;

[0009] Preferably, the inner wall of the waist-shaped groove is fixedly connected with a magnet for adsorbing impurities;

[0010] Preferably, the flange includes a circular groove, and the flange ring has a circular groove.

[0011] The advantages of this utility model are:

[0012] 1. In this utility model, the outer diameter of the circular groove is slightly larger than the outer diameter of the oil slinger, and the width of the circular groove can be the same as the width of the wedge-shaped notch. The circular groove serves as a transition area to initially collect and guide the lubricating medium. Through the guiding effect of the circular groove, the amount of lubricating oil collected by the wedge-shaped notch can be greatly increased.

[0013] 2. The lubricating oil collected by the flange flows into the waist-shaped groove corresponding to the wedge-shaped notch on the bearing housing, and then flows to the bearing through the through hole. A magnet is placed in the waist-shaped groove to attract impurities in the flowing lubricating oil, which can prevent the through hole and waist-shaped groove from being blocked, and at the same time reduce the wear on the bearing. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the internal structure of the bearing chamber;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the left side structure of this utility model.

[0018] In the picture:

[0019] 1. Bearing chamber; 2. Bearing housing; 21. Bearing; 22. Inner ring; 221. Wedge notch; 222. Waist groove; 220. Through hole; 3. Flange; 31. Circular groove; 4. Magnet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0022] This application discloses an oil collecting flange structure for use in a vacuum pump, including a bearing chamber 1, a bearing seat 2 fixedly connected to the inner wall of the bearing chamber 1, a flange 3 provided on the outer side of the bearing seat 2, a bearing 21 provided on the inner wall of the bearing seat 2, and a rotating shaft fixedly connected to the middle of the bearing 21 in the middle of the bearing chamber 1.

[0023] The bearing housing 2 also includes an inner ring 22, and the outer ring of the bearing housing 2 is fixedly provided with the inner ring 22;

[0024] The inner ring 22 also includes a wedge-shaped notch 221, and the inner ring 22 has a wedge-shaped notch 221 on its ring body. The bearing seat 2 also includes a waist-shaped groove 222, and the bearing seat 2 has a waist-shaped groove 222 at the position corresponding to the wedge-shaped notch 221.

[0025] The waist-shaped groove 222 also includes a through hole 220, and the bottom of the waist-shaped groove 222 is provided with a through hole 220;

[0026] The inner wall of the waist-shaped groove 222 is fixedly connected with a magnet 4 for adsorbing impurities;

[0027] The flange 3 includes a circular groove 31, and the flange 3 has a circular groove 31 on its annular body.

[0028] Working principle: (based on) Figure 2 (Based on the standard) A circular groove 31 is opened on the inner side of the flange 3 ring body. The circular groove 31 is connected to the waist-shaped groove 222 opened on the bearing housing 2. The structure of the circular groove 31 can effectively guide and collect the lubricating medium splashed in the bearing chamber 1. At the same time, a waist-shaped groove 222 is opened on the bearing housing 2 at the position corresponding to the wedge-shaped notch 221. In addition, a through hole 220 is provided at the bottom of the waist-shaped groove 222. The lubricating oil is first collected by the circular groove 31. Because the circular groove 31 is connected to the waist-shaped groove 222, the lubricating oil flows into the waist-shaped groove 222. And because the bottom of the waist-shaped groove 222 is provided with a through hole 220, the lubricating oil flows from the bottom of the waist-shaped groove 222 to the bearing 21 through the through hole 220.

[0029] During the operation of the vacuum pump, the rotating shaft inside the bearing chamber 1 drives the oil slinger to splash the lubricating medium located at the bottom of the bearing chamber 1. The lubricating oil is splashed to various parts inside the bearing chamber 1 by the oil slinger.

[0030] When the lubricating medium reaches the circular groove 31 of the flange 3, the outer diameter of the circular groove 31 is slightly larger than the outer diameter of the oil slinger. The width of the circular groove 31 can be the same as the width of the wedge-shaped notch 221. The circular groove 31 serves as a transition area to initially collect and guide the lubricating medium. Through the guiding effect of the circular groove 31, the amount of lubricating oil collected by the wedge-shaped notch 221 can be greatly increased.

[0031] The lubricating oil collected by flange 3 flows into the waist-shaped groove 222 of the wedge-shaped notch 221 on bearing housing 2, and then flows to bearing 21 through through hole 220. A magnet 4 is placed in waist-shaped groove 222 to attract impurities in the flowing lubricating oil, which can prevent the through hole 220 and waist-shaped groove 222 from being blocked, and at the same time reduce the wear on bearing 21.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An oil collecting flange structure applied to a vacuum pump, comprising a bearing chamber (1), characterized in that: The bearing chamber (1) is fixedly connected to the inner wall of the bearing seat (2), and a flange (3) is provided on the outer side of the bearing seat (2). The bearing (21) is provided on the inner wall of the bearing seat (2), and the middle part of the bearing (21) is fixedly connected to the rotating shaft in the middle of the bearing chamber (1). The bearing housing (2) also includes an inner ring (22), and the outer ring of the bearing housing (2) is fixedly provided with the inner ring (22); The inner ring (22) also includes a wedge-shaped notch (221), and the inner ring (22) has a wedge-shaped notch (221) on its ring body. The bearing seat (2) also includes a waist-shaped groove (222), and the bearing seat (2) has a waist-shaped groove (222) at the position corresponding to the wedge-shaped notch (221). The waist-shaped groove (222) also includes a through hole (220), and the bottom of the waist-shaped groove (222) is provided with a through hole (220).

2. The oil collecting flange structure applied to a vacuum pump according to claim 1, characterized in that: The inner wall of the waist-shaped groove (222) is fixedly connected to a magnet (4) for adsorbing impurities.

3. The oil collecting flange structure applied to a vacuum pump according to claim 1, characterized in that: The flange (3) includes a circular groove (31), and the annulus of the flange (3) has a circular groove (31).

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