Adjustable constant level oil cup

By designing an adjustable constant-position oil cup, the problem of the non-adjustable oil level in the constant-position oil cup is solved, realizing the autonomous adjustment of the lubricating oil level and the stable operation of the equipment, avoiding lubricating oil leakage and waste, and making it suitable for various environments.

CN224551269UActive Publication Date: 2026-07-24SHANGHAI KAIQUAN PUMP IND GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI KAIQUAN PUMP IND GROUP
Filing Date
2025-07-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The existing constant-position oil cup design standard does not allow for adjustable oil level, which can lead to excessively high or low lubricating oil levels, affecting the working performance of rotating parts and potentially causing lubricating oil leakage or waste.

Method used

An adjustable constant-level oil cup is designed. Through the combination structure of the oil cup body, the oil cup outer sleeve, the oil cup adjustment bracket and the oil cup base, the lubricating oil level can be autonomously adjusted by using threaded connection and connecting hole to ensure that the oil level is always maintained at the design standard.

Benefits of technology

It enables autonomous adjustment of the lubricating oil level, avoids lubricating oil leakage and waste, extends the service life of bearing components, is suitable for harsh environments, and requires no downtime operation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224551269U_ABST
Patent Text Reader

Abstract

This utility model relates to an adjustable constant-position oil cup, comprising an oil cup body, an oil cup outer sleeve, an oil cup adjustment frame, and an oil cup base. The oil cup body contains an oil pipe with a wedge-shaped lower part. The oil cup body is fixed above the oil cup outer sleeve, which has a connecting hole for maintaining airflow and balancing atmospheric pressure. The connecting hole connects to the wedge-shaped lower part of the oil pipe. The lower part of the oil cup outer sleeve and the upper part of the oil cup adjustment frame are fixed together. The oil cup adjustment frame has an external adjustment thread, and the oil cup base has an internal thread that mates with the adjustment thread. The oil cup base includes a horizontal branch pipe and a vertical pipe. The wedge-shaped oil pipe is located inside the vertical pipe, and the internal thread is located inside the top cavity. The lower end of the vertical pipe connects to the horizontal branch pipe, which is used to connect to the equipment to be lubricated. This utility model, using the oil cup adjustment frame and oil cup base in combination, allows the adjustable constant-position oil cup to independently adjust the designed oil level, preventing reduced service life of bearing components due to insufficient lubrication height.
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Description

Technical Field

[0001] This utility model relates to a constant-level oil cup, specifically an adjustable constant-level oil cup with a simple structure and an adjustable oil level height. Background Technology

[0002] Currently, rotating equipment lubricated with thin oil has requirements on the level of lubricating oil. Most of these equipment use constant-level oil cups to replenish oil and ensure the oil level.

[0003] During the operation of rotating equipment, the lubricating oil in the bearing chamber will be lost. The drop in the oil level in the bearing chamber will cause the air pressure balance of the lubricating oil surface in the constant level oil cup to be disrupted. The lubricating oil stored in the constant level oil cup will then flow into the bearing chamber. After the oil level in the bearing chamber rises, the air pressure will eventually be balanced again. Therefore, the constant level oil cup can automatically replenish oil after the oil level in the bearing chamber drops, so that the oil level in the bearing chamber is always maintained at the design oil level.

[0004] While constant-level oil cups can ensure a constant lubricating oil level, they also have some drawbacks. For example, the standard oil level (i.e., the replenishment oil level) of the constant-level oil cup is fixed and cannot be adjusted, as it is determined by the height of the wedge surface at the bottom of the oil pipe. However, in actual applications, the height of the lubricated components may differ from the standard oil level of the constant-level oil cup. If the oil level is too high, lubricating oil leakage will occur; if the oil level is too low, the lubricated components will not receive effective lubrication. If the replenishment oil level is not adjusted, it will affect the working performance of rotating components. Utility Model Content

[0005] To address the aforementioned problems, the main objective of this utility model is to provide an adjustable constant-level oil cup with a simple structure and an adjustable oil level height.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: an adjustable constant position oil cup, the adjustable constant position oil cup comprising: an oil cup body, an oil cup outer sleeve, an oil cup adjustment frame, an oil cup base, and an oil pipe inside the oil cup body, the lower part of which is a wedge-shaped oil pipe wedge surface.

[0007] The oil cup body is fixed above the outer sleeve of the oil cup, and the outer sleeve of the oil cup is provided with a connecting hole to maintain air circulation and balance atmospheric pressure; the connecting hole is connected to the wedge-shaped surface of the oil pipe at the bottom of the oil pipe.

[0008] The lower part of the oil cup outer sleeve and the upper part of the oil cup adjustment bracket are fixed together. The oil cup adjustment bracket is provided with an external adjustment thread, and the oil cup base is provided with an internal thread that mates with the adjustment thread. The mating height between the adjustment thread and the internal thread is the adjustable height.

[0009] The oil cup base includes a horizontal branch pipe and a vertical pipe. The wedge-shaped surface of the oil pipe is located inside the vertical pipe. The vertical pipe is a cavity with an open top and has internal threads located inside the top cavity. The lower end of the vertical pipe is connected to the horizontal branch pipe, which is used to connect to the equipment to be lubricated.

[0010] In a specific embodiment of this utility model, the height of the internal thread is greater than the height of the wedge-shaped surface of the oil cup body oil pipe.

[0011] In a specific embodiment of this utility model, a raised ring for positioning the oil cup adjustment bracket is provided at the lower part of the outer sleeve of the oil cup.

[0012] In a specific embodiment of this utility model, the number of connecting holes is 2-6.

[0013] In a specific embodiment of this utility model, the oil cup body is a visible transparent or semi-transparent oil cup body.

[0014] The positive and progressive effects of this utility model are as follows: The adjustable constant-level oil cup provided by this utility model has the following advantages:

[0015] 1. The combination of the oil cup adjustment bracket and the oil cup base in this utility model has a simple and reliable structural design, is easy to process and manufacture, has a wide range of applications, low investment cost, simple and convenient maintenance, and good economic efficiency.

[0016] 2. The adjustable constant-position oil cup of this utility model can independently adjust the designed oil level, avoiding the reduction of service life of bearing parts due to insufficient lubrication height, and avoiding the leakage of lubricating oil due to excessive lubrication height, thus wasting lubricating oil and causing environmental pollution.

[0017] 3. This utility model has multiple ventilation holes, which can be used in harsh environments without worrying about the ventilation holes getting blocked.

[0018] 4. Because there is no lubricating oil at the threaded connection, there is no risk of lubricating oil leakage and contamination.

[0019] 5. The adjustable constant-level oil cup of this utility model can adjust the designed oil level during equipment operation without stopping the machine. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the oil cup adjustment bracket in this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the oil cup base in this utility model.

[0023] The following are the names corresponding to the reference numerals in this utility model:

[0024] Oil cup body 1, oil cup outer sleeve 2, oil cup adjusting bracket 3, oil cup base 4, oil pipe wedge-shaped opening 5, connecting hole 201, protruding ring 202, adjusting thread 301, internal thread 401, horizontal branch pipe 402, vertical pipe 403. Detailed Implementation

[0025] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a schematic diagram of the oil cup adjustment bracket in this utility model. Figure 3 This is a schematic diagram of the structure of the oil cup base in this utility model. As shown in the figure above: This utility model provides an adjustable constant-position oil cup, which includes an oil cup body 1, an oil cup outer sleeve 2, an oil cup adjustment frame 3, and an oil cup base 4. The oil cup body 1 contains an oil pipe, the lower part of which is a wedge-shaped wedge surface 5. The oil cup body 1 is fixed above the oil cup outer sleeve 2, and the oil cup outer sleeve 2 is provided with a connecting hole 201 to maintain airflow and balance atmospheric pressure. The connecting hole is connected to the lower section of the oil pipe. The lower part of the oil cup outer sleeve 2 and the upper part of the oil cup adjustment frame 3 are fixed together. The oil cup base 4 is provided with an external adjusting thread 301 and an internal thread 401 that mates with the adjusting thread. The mating height between the adjusting thread 301 and the internal thread 401 is an adjustable height. The oil cup base 4 includes a horizontal branch pipe 402 and a vertical pipe 403. The wedge-shaped surface 5 of the oil pipe is located inside the vertical pipe 403. The vertical pipe 403 is a cavity with an open top and an internal thread 401 located inside the top cavity. The lower end of the vertical pipe 403 is connected to the horizontal branch pipe 402. The horizontal branch pipe 402 is used to connect to the equipment to be lubricated.

[0027] In this utility model, the height of the internal thread 401 should be greater than the height of the wedge-shaped surface 5 of the oil cup body 1.

[0028] In this utility model, the lower part of the outer sleeve 2 of the oil cup is provided with a protruding ring 202 for positioning the oil cup adjustment bracket 3.

[0029] In this utility model, the number of connecting holes 201 is generally greater than 2, and can be 2-6.

[0030] The oil cup body 1 of this utility model is used to store lubricating oil, and the bottom of the oil cup body has an oil pipe with a wedge-shaped opening 5 at the bottom. The oil cup body 1 is made of a visible material to facilitate observation of the lubricating oil usage status.

[0031] This utility model takes into account the harsh on-site environment, and the oil cup sleeve 2 should have two connecting holes to prevent blockage and to connect the internal and external air to balance the air pressure.

[0032] The lower part of the oil cup adjusting bracket 3 of this utility model has an external thread at the connection between the oil cup base 4 and the lower part. The liquid level can be adjusted by the depth of the thread. In order to ensure the adjustment height of the standard liquid level, the lower part of the oil cup adjusting bracket 3 needs to be machined with a full thread.

[0033] The oil cup base 4 of this utility model is a cavity with an open top and a thread inside the top cavity. The height of the thread should be greater than the height of the wedge-shaped surface 5 of the oil pipe in the oil cup body 1. The lower end of the oil cup base is connected to a horizontal branch pipe, which is used to connect to the equipment to be lubricated.

[0034] The adjustable constant-level oil cup provided by this utility model, when the oil cup body 1 filled with lubricating oil is installed on the oil cup sleeve 2, the lubricating oil in the oil cup body will flow into the oil cup base 4 through the oil pipe under the action of gravity, causing the oil level in the equipment to be lubricated to rise. When the oil level is blocked at the highest point of the wedge-shaped opening 5 of the oil pipe, the lubricating oil in the oil cup body 1 stops flowing downward. As the lubricating oil in the equipment to be lubricated is consumed, the oil level in the equipment to be lubricated drops. When it drops below the highest point of the wedge-shaped opening 5, external air can enter the oil cup body 1 through the connecting hole of the oil cup sleeve 2, so that the pressure inside the oil cup body 1 is equal to the external atmospheric pressure. The lubricating oil in the oil cup body 1 will then flow into the equipment to be lubricated under the action of gravity, causing the oil level in the equipment to continue to rise to the design standard oil level. The highest point of the wedge-shaped opening is blocked by the oil level, thus ensuring that the oil level in the lubricating equipment is always maintained at the design standard oil level.

[0035] The oil level adjustment solution provided by this utility model does not require disassembling the constant position oil cup, does not require adding extra parts, eliminates the risk of lubricating oil leakage and contamination, and does not require the lubrication device to be shut down.

[0036] The material of the oil cup body 1 should be a transparent and visible material so that the lubricating oil status of the constant position oil cup can be easily observed.

[0037] The outer sleeve 2 of the oil cup has at least two connection holes to prevent the connection holes from becoming blocked under harsh conditions, which would prevent the lubricating oil in the oil cup body 1 from falling into the oil cup base and thus affect lubrication.

[0038] Because there is no lubricating oil present at the threaded connection, this invention eliminates the risk of lubricating oil leakage and contamination.

[0039] This utility model combines an oil cup adjustment bracket and an oil cup base, featuring a simple and reliable structural design, convenient processing and manufacturing, wide application range, low investment cost, simple and convenient maintenance, and good economic efficiency.

[0040] This utility model features an adjustable constant-position oil cup that can independently adjust the designed oil level, preventing the bearing components from having a reduced service life due to insufficient lubrication height, and preventing excessive lubrication height from causing lubrication leakage, thus wasting lubrication and causing environmental pollution.

[0041] This invention features multiple vents, allowing it to be used in harsh environments without the need to worry about vent blockage.

[0042] Because there is no lubricating oil present at the threaded connection, this invention eliminates the risk of lubricating oil leakage and contamination.

[0043] This utility model's adjustable constant-level oil cup allows for adjustment of the designed oil level during equipment operation without stopping the machine.

[0044] 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 protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. An adjustable constant-level oil cup, characterized in that: The adjustable constant position oil cup includes: an oil cup body, an oil cup outer sleeve, an oil cup adjustment frame, an oil cup base, and an oil pipe inside the oil cup body, with the lower part of the oil pipe being a wedge-shaped surface. The oil cup body is fixed above the outer sleeve of the oil cup, and the outer sleeve of the oil cup is provided with a connecting hole to maintain air circulation and balance atmospheric pressure; the connecting hole is connected to the wedge-shaped surface of the oil pipe at the bottom of the oil pipe; The lower part of the oil cup outer sleeve and the upper part of the oil cup adjusting bracket are fixed together. The oil cup adjusting bracket is provided with an external adjusting thread, and the oil cup base is provided with an internal thread that mates with the adjusting thread. The mating height between the adjusting thread and the internal thread is the adjustable height. The oil cup base includes a horizontal branch pipe and a vertical pipe. The wedge-shaped surface of the oil pipe is located inside the vertical pipe. The vertical pipe is a cavity with an open top and has internal threads located inside the top cavity. The lower end of the vertical pipe is connected to the horizontal branch pipe, which is used to connect to the equipment to be lubricated.

2. The adjustable constant-level oil cup according to claim 1, characterized in that: The height of the internal thread is greater than the height of the wedge-shaped surface of the oil cup body oil pipe.

3. The adjustable constant-level oil cup according to claim 1, characterized in that: The lower part of the outer sleeve of the oil cup is provided with a raised ring for positioning the oil cup adjustment bracket.

4. The adjustable constant-level oil cup according to claim 1, characterized in that: The number of connecting holes is 2-6.

5. The adjustable constant-level oil cup according to claim 1, characterized in that: The oil cup body is a visible transparent or semi-transparent oil cup body.