Grease injection and discharge mechanism of vertical motor

By designing a grease injection and discharge mechanism for a vertical motor, and utilizing a rotating oil-slinging disc and scraper assembly to achieve automatic grease injection and discharge, the problem of low grease cleaning efficiency is solved, thereby improving the motor's operating efficiency and lifespan.

CN224233457UActive Publication Date: 2026-05-12ANHUI MINGTENG PERMANENT-MAGNETIC MASCH&ELECTRICAL EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI MINGTENG PERMANENT-MAGNETIC MASCH&ELECTRICAL EQUIP CO LTD
Filing Date
2025-05-27
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

In existing technologies, it is difficult to effectively clean the grease from the bearings of vertical motors, leading to prolonged high-temperature operation of the bearings, which affects the lifespan of the motor. Furthermore, traditional cleaning methods are inefficient, and the shutdown process is cumbersome, impacting production efficiency.

Method used

Design a grease injection and discharge mechanism for a vertical motor, including an oil scraper, an auxiliary scraper, and an oil pusher. The mechanism achieves automatic grease injection and discharge during motor operation by rotating the oil slinger and scraper assembly, and cleans the grease using centrifugal force and the scraper mechanism.

Benefits of technology

It enables automatic grease injection and discharge during motor operation, improving work efficiency, avoiding downtime, and enhancing the cleaning effect and service life of the motor.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a grease injection and discharge mechanism of a vertical motor, and relates to the technical field of vertical motors, the grease injection and discharge mechanism of the vertical motor comprises a motor shaft, a bearing upper cover, an end plate and a bearing lower cover, the bearing upper cover, the end plate and the bearing lower cover are installed outside the motor shaft, an oil inlet and discharge assembly is arranged outside the motor shaft, and the oil inlet and discharge assembly comprises an oil scraping piece; through the designed oil feeding and discharging assembly, grease is injected through the oil inlet in the using process, the motor shaft can rotate in the operation process of the vertical motor during oil discharging, the oil flinger and the scraper at the bottom are driven to rotate, the scraper scrapes the grease accumulated in the lower cavity, and then the grease flows into the oil flinger through the oil overflowing opening; grease is thrown to the oil discharge channel through large enough centrifugal force generated by the rotating oil flinger and then is discharged outwards from the oil outlet, oil injection and oil discharge operation can be completed in the operation process of the vertical motor, shutdown is not needed, and the working efficiency is improved.
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Description

Technical Field

[0001] This utility model belongs to the field of vertical motor technology, specifically a grease injection and grease removal mechanism for a vertical motor. Background Technology

[0002] The purpose of draining grease from an electric motor is to remove impurities, moisture, and unavoidable contaminants from inside the motor, ensuring its normal operation. If grease accumulates or becomes clogged at the drain port, it will lead to poor heat dissipation, overheating, and in severe cases, shorten the motor's lifespan.

[0003] In existing technologies, motor bearings operate at high temperatures for extended periods, resulting in blackened, solidified, highly viscous, and poorly fluid bearing grease. The industry practice is to disassemble the motor and manually clean it, which is inconvenient for operators and reduces factory output and efficiency due to downtime. While some of the blackened and solidified grease can be removed using an oil pump, it cannot be completely removed. The frictional heat generated by the accumulated and solidified grease still raises the bearing temperature, reducing the cleaning effect on the vertical motor and shortening its lifespan. Therefore, we propose a grease injection and drainage mechanism for vertical motors. Utility Model Content

[0004] The purpose of this utility model is to provide a grease injection and grease discharge mechanism for a vertical motor to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grease injection and drainage mechanism for a vertical motor, comprising a motor shaft and a bearing upper cover, an end plate, and a bearing lower cover mounted outside the motor shaft. An oil inlet and outlet assembly is provided outside the motor shaft, the oil inlet and outlet assembly comprising:

[0006] The oil scraping component includes an oil slinger plate sleeved on the outside of the motor shaft. The oil slinger plate has multiple sets of oil overflow ports inside, and multiple sets of scrapers are fixedly installed at the bottom of the oil slinger plate for scraping off accumulated grease.

[0007] An auxiliary scraper, located below the oil-scraping disc, is used to further scrape away accumulated grease.

[0008] Preferably, the oil scraper further includes an upper chamber opened in the upper cover of the bearing, a lower chamber opened in the lower cover of the bearing, and an oil drain channel opened in one side of the end plate.

[0009] Preferably, the bearing cover has an oil outlet and an oil inlet on each of its two sides, the oil outlet being connected to the oil drain channel and the upper chamber being connected to the oil inlet.

[0010] Preferably, the auxiliary scraping component includes multiple sets of fixed inclined plates fixed to the bottom of the oil-slinging plate, a movable plate slidably disposed on the fixed inclined plate, and a short rubber scraper fixedly disposed at the bottom of the movable plate.

[0011] Preferably, the surface of the fixed inclined plate is fixedly provided with two sets of T-shaped rails, and the interior of the movable plate is provided with two sets of T-shaped grooves.

[0012] Preferably, the end plate is provided with an oil pushing component, the oil pushing component includes an annular groove formed at the bottom of the end plate, a support frame is fixedly provided on the top of one side of the oil slinger, and an arc-shaped scraper is fixedly provided on the top of the support frame.

[0013] A connecting spring is fixedly installed between the surface of the movable plate and the bottom of the oil-slinging pan.

[0014] Preferably, the bottom of the oil-slinging plate is further provided with a main pusher, the main pusher including a long plate fixed to the bottom of the oil-slinging plate, and a long rubber scraper fixedly provided at the bottom of the long plate.

[0015] Preferably, a bearing body is sleeved on the outside of the motor shaft, and the bearing body is located inside the end plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The present invention uses an oil inlet and outlet assembly. During use, grease is injected through the oil inlet. When discharging grease, the motor shaft rotates during the operation of the vertical motor, which drives the oil slinger and the scraper at the bottom to rotate. The scraper scrapes the grease accumulated in the lower chamber and then flows out through the overflow port into the oil slinger. The sufficiently large centrifugal force generated by the rotating oil slinger throws the grease towards the oil outlet channel and then discharges it outward from the oil outlet. The oil injection and discharge operations can be completed during the operation of the vertical motor without stopping the machine, thus improving work efficiency.

[0018] (2) The present invention uses an oil-pushing component designed so that when the oil-slinging disc rotates, the grease will be thrown toward the annular groove. Then, the grease located in the annular groove is pushed toward the oil discharge channel by the arc-shaped scraper, which avoids the grease from accumulating in the annular groove and causing the grease to be discharged in a timely manner, thus facilitating the discharge of grease.

[0019] (3) The present invention uses a designed pusher component, which drives the long plate and long rubber scraper to rotate during the rotation of the oil slinger, which can scrape off the grease that has not been scraped off in the lower chamber again, thereby increasing the cleanliness of the grease in the lower chamber. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 For the present utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0022] Figure 3 This is a front view structural diagram of the oil slinger of this utility model;

[0023] Figure 4 This is a top view schematic diagram of the oil slinger structure of this utility model;

[0024] Figure 5 This is a bottom view of the oil slinger structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the scraper structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the fixed inclined plate and movable plate structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the T-groove structure of this utility model;

[0028] In the diagram: 100, motor shaft; 101, upper bearing cover; 102, end plate; 103, lower bearing cover; 104, bearing body; 200, oil outlet; 201, oil drain channel; 202, annular groove; 203, lower chamber; 204, oil slinger; 205, scraper; 206, upper chamber; 207, arc-shaped scraper; 208, centrifugal inclined plane; 209, support frame; 210, fixed inclined plate; 211, movable plate; 212, T-slot; 213, T-rail; 214, connecting spring; 215, overflow port; 216, oil inlet; 300, long plate; 301, long rubber scraper. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6This utility model provides a technical solution: a grease injection and grease discharge mechanism for a vertical motor, including a motor shaft 100 and a bearing upper cover 101, an end plate 102 and a bearing lower cover 103 installed outside the motor shaft 100. An oil inlet and outlet assembly is provided outside the motor shaft 100, and the oil inlet and outlet assembly includes an oil scraper and an auxiliary scraper.

[0032] The oil scraping component includes an oil slinger 204 sleeved on the outside of the motor shaft 100. The inner wall edge of the oil slinger 204 is provided with a centrifugal inclined surface 208. Multiple oil overflow ports 215 are opened inside the oil slinger 204. Multiple scrapers 205 are fixedly provided at the bottom of the oil slinger 204.

[0033] The oil scraper also includes an upper chamber 206 opened in the upper cover 101 of the bearing, a lower chamber 203 opened inside the lower cover 103 of the bearing, an oil slinger 204 located inside the lower chamber 203, and an oil discharge channel 201 opened inside one side of the end plate 102.

[0034] The bearing cover 101 has an oil outlet 200 and an oil inlet 216 on its two sides respectively. The oil outlet 200 is connected to the oil discharge channel 201, and the upper chamber 206 is connected to the oil inlet 216.

[0035] Example 2

[0036] Please refer to Example 1. Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The auxiliary scraping components include multiple sets of fixed inclined plates 210 fixed to the bottom of the oil slinger 204, a movable plate 211 slidably disposed on the fixed inclined plate 210, and a short rubber scraper fixedly disposed at the bottom of the movable plate 211. The fixed inclined plate 210, the movable plate 211 and the short rubber scraper are arranged in an X-shaped structure around the scraper 205.

[0037] Two sets of T-shaped rails 213 are fixedly installed on the surface of the fixed inclined plate 210. Two sets of T-shaped grooves 212 are opened inside the movable plate 211. The bottom of the T-shaped rail 213 passes through the interior of the T-shaped groove 212. The movable plate 211 is slidably mounted on the T-shaped rail 213 through the T-shaped groove 212.

[0038] This invention utilizes a designed oil inlet and outlet assembly. During use, grease is injected through the oil inlet 216, and during oil discharge, the motor shaft 100 rotates while the vertical motor is running, driving the oil slinger 204 and the scraper 205 at the bottom to rotate. The scraper 205 scrapes the grease accumulated in the lower chamber 203 and then flows out through the overflow port 215 into the oil slinger 204. The sufficiently large centrifugal force generated by the rotating oil slinger 204 throws the grease towards the oil discharge channel 201 and then discharges it outward from the oil outlet 200. The oil injection and discharge operations can be completed while the vertical motor is running, without stopping the machine, thus improving work efficiency.

[0039] Example 3

[0040] Please refer to Example 2. Figure 1 , Figure 2 and Figure 5 An oil-pushing component is provided on the end plate 102. The oil-pushing component includes an annular groove 202 opened at the bottom of the end plate 102. A support frame 209 is fixedly provided on the top of one side of the oil-slinging plate 204. An arc-shaped scraper 207 is fixedly provided on the top of the support frame 209.

[0041] A connecting spring 214 is fixedly installed between the surface of the movable plate 211 and the bottom of the oil slinger 204.

[0042] This invention utilizes a designed oil-pushing component. When the oil-slinging disc 204 rotates, the grease is thrown towards the annular groove 202. Then, the arc-shaped scraper 207 pushes the grease located in the annular groove 202 towards the oil discharge channel 201, thus preventing the grease from accumulating in the annular groove 202 and causing untimely discharge, and facilitating the discharge of grease.

[0043] The bottom of the oil slinger 204 is also equipped with a main pusher. The unique structural design of the oil slinger 204 allows the waste lubricating grease accumulated in the lower chamber 203 to flow upward in the oil discharge channel 201 under the action of centrifugal force and in the opposite direction of gravity, and finally be discharged. The main pusher includes a long plate 300 fixed to the bottom of the oil slinger 204, and a long rubber scraper 301 is fixedly installed at the bottom of the long plate 300.

[0044] This utility model, through the design of the main push component, will drive the long plate 300 and the long rubber scraper 301 to rotate when the oil slinger 204 rotates, which can scrape off the grease that has not been scraped off in the lower chamber 203 again, increasing the degree of cleanliness of the grease in the lower chamber 203.

[0045] In this embodiment, a bearing body 104 is sleeved on the outside of the motor shaft 100. The bearing body 104 is located inside the end plate 102. A sealing strip is provided between the upper bearing cover 101, the lower bearing cover 103 and the motor shaft 100.

[0046] Working principle and usage process of this utility model:

[0047] When using this invention, when injecting grease, the plugs on the oil inlet 216 and oil outlet 200 are pulled out, and then grease is injected into the upper chamber 206 through the oil inlet 216. The grease will then flow into the lower chamber 203 under the action of gravity, filling the lower chamber 203. Subsequently, the grease will fill the upper chamber 206. At this time, the bearing body 104 in the end plate 102 is immersed in the grease for lubrication. When the upper chamber 206 is full of grease, it will be discharged outward from the oil outlet 200. Finally, stop injecting grease and cover the oil inlet 216 and oil outlet 200 with the two sets of plugs.

[0048] When draining oil, the motor shaft 100 rotates, driving the external oil slinger 204 and the multiple sets of scrapers 205 at the bottom to rotate as well. At this time, the scrapers 205 can scrape the accumulated and solidified lubricating grease. Then the grease flows upward from the overflow port 215 into the oil slinger 204. Then, it is thrown towards the centrifugal inclined surface 208 at the edge of the oil slinger 204 by centrifugal force. Then, it is thrown towards the inner wall of the annular groove 202 and the bottom of the drain channel 201 by the centrifugal inclined surface 208. At this time, the rotating oil slinger 204 drives the support frame 209 and the arc-shaped scraper 207 to rotate. The arc-shaped scraper 207 scrapes the grease located in the annular groove 202 towards the bottom of the drain channel 201. Then, with a sufficiently large centrifugal force from the oil slinger 204, the waste lubricating grease will be smoothly discharged outward through the drain channel 201 and the oil outlet 200.

[0049] During the rotation of the oil slinger 204, it also drives the multiple sets of fixed inclined plates 210 below to move. The fixed inclined plates 210 drive the movable plate 211 and the short rubber scraper at the bottom of the movable plate 211 to rotate. At this time, the short rubber scraper can scrape the grease located at the bottom of the inner wall of the lower chamber 203, increasing the cleaning effect. At the same time, since the fixed inclined plate 210, the movable plate 211 and the short rubber scraper are inclined towards the overflow port 215, it is convenient for the grease to flow into the overflow port 215 through the inclined surface while scraping. At the same time, the connecting spring 214 presses the movable plate 211 downward, so that the bottom of the short rubber scraper contacts the bottom of the inner wall of the lower chamber 203 more closely, increasing the cleaning effect. Moreover, during the rotation of the oil slinger 204, it also drives the long plate 300 and the long rubber scraper 301 below the long plate 300 to rotate. At this time, the long rubber scraper 301 can scrape the grease located at the bottom of the inner wall of the lower chamber 203 that has not been scraped, further increasing the cleaning effect of the grease.

[0050] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A grease injection and grease drainage mechanism for a vertical motor, comprising a motor shaft (100) and a bearing upper cover (101), an end plate (102), and a bearing lower cover (103) mounted outside the motor shaft (100), wherein an oil inlet and outlet assembly is provided outside the motor shaft (100), characterized in that, The oil inlet and outlet assembly includes: The oil scraping component includes an oil slinger (204) sleeved on the outside of the motor shaft (100). The oil slinger (204) has multiple sets of overflow ports (215) inside. The bottom of the oil slinger (204) is fixedly provided with multiple sets of scrapers (205) for scraping off the accumulated grease. An auxiliary scraper is located below the oil slinger (204) to further scrape away accumulated grease.

2. The grease injection and grease removal mechanism for a vertical motor according to claim 1, characterized in that: The oil scraper also includes an upper chamber (206) opened in the upper cover (101) of the bearing, a lower chamber (203) opened inside the lower cover (103) of the bearing, and an oil drain channel (201) opened inside one side of the end plate (102).

3. The grease injection and grease removal mechanism for a vertical motor according to claim 2, characterized in that: The bearing cover (101) has an oil outlet (200) and an oil inlet (216) on its two sides respectively. The oil outlet (200) is connected to the oil discharge channel (201), and the upper chamber (206) is connected to the oil inlet (216).

4. The grease injection and grease removal mechanism for a vertical motor according to claim 1, characterized in that: The auxiliary scraping component includes multiple sets of fixed inclined plates (210) fixed to the bottom of the oil slinger (204), a movable plate (211) is slidably arranged on the fixed inclined plate (210), and a short rubber scraper is fixedly arranged at the bottom of the movable plate (211).

5. The grease injection and grease removal mechanism for a vertical motor according to claim 4, characterized in that: The surface of the fixed inclined plate (210) is fixedly provided with two sets of T-shaped rails (213), and the interior of the movable plate (211) is provided with two sets of T-shaped grooves (212).

6. The grease injection and grease removal mechanism for a vertical motor according to claim 5, characterized in that: An oil-pushing component is provided on the end plate (102), the oil-pushing component includes an annular groove (202) opened at the bottom of the end plate (102), a support frame (209) is fixedly provided on the top of one side of the oil-slinging plate (204), and an arc-shaped scraper (207) is fixedly provided on the top of the support frame (209). A connecting spring (214) is fixedly provided between the surface of the movable plate (211) and the bottom of the oil slinger (204).

7. The grease injection and grease removal mechanism for a vertical motor according to claim 1, characterized in that: The bottom of the oil-slinging plate (204) is also provided with a main pusher, which includes a long plate (300) fixed to the bottom of the oil-slinging plate (204), and a long rubber scraper (301) is fixedly provided at the bottom of the long plate (300).

8. The grease injection and grease removal mechanism for a vertical motor according to claim 1, characterized in that: The motor shaft (100) is fitted with a bearing body (104), which is located inside the end plate (102).