Bearing lubricating oil circulating device

Abstract

The utility model discloses a bearing lubricating oil circulating device which comprises a bearing box, a main shaft and a cover plate assembly used for covering the two horizontal sides of the bearing box, the outer surface wall of the main shaft is rotationally connected with the inner surface wall of the bearing box through a pump end bearing and a motor end bearing, and the inner surface wall of the bearing box is fixedly connected with a lining. A cavity is formed between the lining and the interior of the bearing box, and a spiral sleeve fixedly connected with the outer surface wall of the main shaft is arranged in the cavity. According to the lubricating device, lubricating oil flows in the cavity, when the main shaft rotates at a high speed, the main shaft can be in linkage with the spiral sleeve to rotate synchronously, the spiral sleeve guides the lubricating oil to axially agitate while turbocharging the lubricating oil, the lubricating oil is made to flow back at a high speed along a specified path, and therefore the heat dissipation performance of the lubricating oil is improved; and the service life of the lubricating oil is prevented from being shortened due to high temperature, so that the using effect of the bearing lubricating oil circulating device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a bearing lubricating oil circulation device. Background Art

[0002] The bearing oil circulation device is a system used for bearing lubrication in mechanical equipment. It provides lubricating oil to the bearings through circulation to reduce friction, reduce wear and remove heat, thereby extending the service life of the bearings and improving the overall efficiency of the machinery.

[0003] Chinese patent publication number CN202338509U, publication date 20120718, discloses a lubricating oil self-circulating cooling bearing device, including a bearing box seat cover, a side cover, an oil slinger, an oil slinger pan, an oil receiving plate and an oil baffle plate, the two ends of the bearing box seat cover are respectively connected to the main shaft through bearings, and the side covers mounted on the main shaft are respectively connected to the two end surfaces of the bearing box seat cover, and an oil slinger ring mounted on the main shaft is provided between the side cover at each end and the bearing at that end; the space between the inside of the bearing box seat cover and the main shaft is an oil pool for holding lubricating oil, an oil slinger pan is installed on the main shaft above the oil pool, and an oil baffle plate and an oil receiving plate connected to the bearing box seat cover are respectively provided above and below the main shaft with the oil slinger pan installed; the bearing box seat cover is provided with a cooling water channel located outside the oil pool.

[0004] Existing bearing lubricating oil circulation devices such as the above-mentioned ones mostly use direct current to circulate the lubricating oil, thereby achieving lubrication of two sets of bearings. In the specific implementation process, the natural flow of the lubricating oil has the problem of slow circulation rate. When the pump is running at high speed, the oil circulation in the bearing box cavity is prone to excessive temperature due to poor circulation, which in turn affects the service life of the lubricating oil. Therefore, it is urgent to propose a corresponding bearing lubricating oil circulation device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to propose a bearing lubricating oil circulation device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A bearing lubricating oil circulation device includes a bearing box, a main shaft and a cover plate assembly for covering the horizontal sides of the bearing box. The outer wall of the main shaft is rotatably connected to the inner wall of the bearing box through a pump-end bearing and a motor-end bearing. A bushing is fixedly connected to the inner wall of the bearing box. A chamber is formed between the bushing and the interior of the bearing box, and a spiral sleeve fixedly connected to the outer wall of the main shaft is provided inside the chamber.

[0008] Preferably, an outer wall of the bearing box is provided with a vent, the vent is communicated with the chamber, and a vent plug is screwed on the top of the vent.

[0009] Preferably, a rubber ring is fixedly connected to the bottom of the vent plug, and the bottom of the rubber ring abuts against the outer wall of the bearing box.

[0010] Preferably, the cover plate assembly includes a pump end cover and a motor end cover, and the pump end cover and the motor end cover are respectively fixedly connected to both sides of the horizontal end of the bearing box, and the inner surface walls of the pump end cover and the motor end cover are rotatably connected to the outer surface wall of the main shaft.

[0011] Preferably, a skeleton oil seal is integrated between the pump end cover and the motor end cover and the outer wall of the main shaft.

[0012] Preferably, the opposite surfaces of the pump end cover and the motor end cover are fixedly connected with O-rings, and both sets of O-rings are in contact with the outer wall of the bearing box.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In the present application, the lubricating oil flows inside the chamber. When the main shaft runs at high speed, the main shaft will be linked with the spiral sleeve to rotate synchronously. While the spiral sleeve turbocharges the lubricating oil, the spiral sleeve guides the lubricating oil to axially agitate, so that the lubricating oil returns at high speed along a specified path, thereby improving the heat dissipation performance of the lubricating oil, avoiding the reduction of the service life of the lubricating oil due to high temperature, and thus improving the use effect of the bearing lubricating oil circulation device.

[0015] 2. In the present application, a vent connected to the chamber is provided on the outer wall of the bearing box. The vent can be subsequently opened by unscrewing the vent plug, thereby relieving the pressure inside the chamber, thereby ensuring the stability of the bearing lubricating oil circulation device. The rubber ring connected to the bottom of the vent plug can ensure the sealing effect of the sealing plug on the vent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the bushing structure provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 A schematic diagram of the prior art structure provided according to an embodiment of the present utility model is shown.

[0019] Legend:

[0020] 1. Main shaft; 2. Pump end cover; 3. Bearing box; 4. Pump end bearing; 5. Breather plug; 6. Motor end bearing; 7. Skeleton oil seal; 8. O-ring; 9. Motor end cover; 10. Spiral sleeve; 11. Chamber; 12. Bushing. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] A bearing lubricating oil circulation device includes a bearing box 3, a main shaft 1, and a cover plate assembly for covering the horizontal sides of the bearing box 3. The outer wall of the main shaft 1 is rotatably connected to the inner wall of the bearing box 3 through a pump-end bearing 4 and a motor-end bearing 6. A bushing 12 is fixedly connected to the inner wall of the bearing box 3. A chamber 11 is formed between the bushing 12 and the interior of the bearing box 3. A spiral sleeve 10 fixedly connected to the outer wall of the main shaft 1 is provided inside the chamber 11.

[0024] The lubricating oil flows inside the chamber 11. When the main shaft 1 runs at high speed, the main shaft 1 will link the spiral sleeve 10 to rotate synchronously. While the spiral sleeve 10 turbocharges the lubricating oil, the spiral sleeve 10 guides the lubricating oil to axially agitate, so that the lubricating oil returns at high speed along a specified path, thereby improving the heat dissipation performance of the lubricating oil, avoiding the reduction of the service life of the lubricating oil due to high temperature, and thus improving the use effect of the bearing lubricating oil circulation device.

[0025] Specifically, such as Figure 2 and Figure 3 As shown, a vent is provided on the outer wall of the bearing box 3, the vent is communicated with the chamber 11, and a vent plug 5 is screwed on the top of the vent, a rubber ring is fixedly connected to the bottom of the vent plug 5, and the bottom of the rubber ring is in contact with the outer wall of the bearing box 3. The outer wall of the bearing box 3 is provided with a vent connected to the chamber 11, and the vent can be opened by unscrewing the vent plug 5. In this way, the pressure inside the chamber 11 can be relieved, thereby ensuring the stability of the bearing lubricating oil circulation device. The rubber ring connected to the bottom of the vent plug 5 can ensure the sealing effect of the vent plug 5 on the vent.

[0026] Specifically, such as Figure 2 and Figure 3As shown, the cover plate assembly includes a pump end cover 2 and a motor end cover 9, which are respectively fixedly connected to the two sides of the horizontal end of the bearing box 3, and the inner surfaces of the pump end cover 2 and the motor end cover 9 are rotatably connected to the outer surface of the main shaft 1, thereby realizing the closure of the bearing box 3, and skeleton oil seals 7 are integrated between the pump end cover 2 and the motor end cover 9 and the outer surface of the main shaft 1, thereby ensuring the sealing between the pump end cover 2 and the motor end cover 9 and the main shaft 1, and the opposite surfaces of the pump end cover 2 and the motor end cover 9 are fixedly connected with O-rings 8, and two groups of O-rings 8 are in contact with the outer surface of the bearing box 3, thereby ensuring the airtightness between the pump end cover 2 and the motor end cover 9 and the bearing box 3.

[0027] Working principle: The lubricating oil flows inside the chamber 11. When the main shaft 1 runs at high speed, the main shaft 1 will link the spiral sleeve 10 to rotate synchronously. While the spiral sleeve 10 turbocharges the lubricating oil, the spiral sleeve 10 guides the lubricating oil to perform axial agitation, so that the lubricating oil returns at high speed along the specified path, thereby improving the heat dissipation performance of the lubricating oil and avoiding the reduction of the service life of the lubricating oil due to high temperature, thereby improving the use effect of the bearing lubricating oil circulation device. A vent connected to the chamber 11 is provided on the outer wall of the bearing box 3. The vent can be opened subsequently by unscrewing the vent plug 5, so that the pressure inside the chamber 11 can be relieved, thereby ensuring the stability of the bearing lubricating oil circulation device. The rubber ring connected to the bottom of the vent plug 5 can ensure the sealing effect of the vent plug 5 on the vent.

[0028] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bearing lubricating oil circulation device, comprising a bearing box (3), a main shaft (1) and a cover assembly for covering both horizontal sides of the bearing box (3), characterized in that: The outer wall of the main shaft (1) is rotatably connected to the inner wall of the bearing box (3) through a pump-end bearing (4) and a motor-end bearing (6); a bushing (12) is fixedly connected to the inner wall of the bearing box (3); a chamber (11) is formed between the bushing (12) and the interior of the bearing box (3); and a spiral sleeve (10) fixedly connected to the outer wall of the main shaft (1) is provided inside the chamber (11).

2. A bearing lubricating oil circulation device according to claim 1, characterized in that: The outer wall of the bearing box (3) is provided with a vent, the vent is communicated with the chamber (11), and a vent plug (5) is screwed on the top of the vent.

3. A bearing lubricating oil circulation device according to claim 2, characterized in that: A rubber ring is fixedly connected to the bottom of the vent plug (5), and the bottom of the rubber ring abuts against the outer wall of the bearing box (3).

4. A bearing lubricating oil circulation device according to claim 3, characterized in that: The cover plate assembly comprises a pump end cover (2) and a motor end cover (9), wherein the pump end cover (2) and the motor end cover (9) are respectively fixedly connected to both sides of the horizontal end of the bearing box (3), and the inner surface walls of the pump end cover (2) and the motor end cover (9) are rotatably connected to the outer surface wall of the main shaft (1).

5. A bearing lubricating oil circulation device according to claim 4, characterized in that: A skeleton oil seal (7) is integrated between the pump end cover (2) and the motor end cover (9) and the outer wall of the main shaft (1).

6. A bearing lubricating oil circulation device according to claim 5, characterized in that: The opposite surfaces of the pump end cover (2) and the motor end cover (9) are both fixedly connected with O-type sealing rings (8), and both groups of O-type sealing rings (8) are in contact with the outer wall of the bearing box (3).

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