Roots pump oil supplement structure

Abstract

The application relates to the field of oil supplement of a Roots pump, in particular to a Roots pump oil supplement structure which comprises a casing, an oil supplement box and a control plate, the casing is provided with an installation cavity accommodating gears, the upper end of the casing is provided with an oil supplement port, the oil supplement port is communicated with the installation cavity, the oil supplement box is detachably connected to the inner wall of the oil supplement port, the oil supplement box is provided with an oil storage cavity, the lower end of the oil supplement box is provided with an oil outlet, the oil outlet is communicated with the oil storage cavity and the installation cavity, one end of the control plate is hinged to the inner wall of the installation cavity, and the other end of the control plate is used for controlling the on-off of the oil outlet. The oil supplement structure avoids the problem that the traditional uncapping oil supplement mode is easy to introduce pollutants, ensures the cleanliness and oil level stability of the lubricating oil in the gear box, and the oil outlet can be opened by rotating the control plate, so that the oil supplement efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of Roots pump oil replenishment, and in particular to a Roots pump oil replenishment structure. Background Technology

[0002] As a precision positive displacement vacuum pump, the stable operation of its core transmission components—synchronous gears and bearings—is highly dependent on continuous and clean lubrication. Therefore, the pump body typically has a separate gearbox, and lubricating oil needs to be replenished regularly to maintain its optimal oil level, thereby ensuring good lubrication, heat dissipation, and extending the equipment's lifespan.

[0003] Currently, most Roots pumps use a traditional oil cup structure for oil replenishment. This structure typically involves an oil inlet located above the gearbox, sealed with a threaded cap. Replenishment requires manually unscrewing the cap and injecting new oil into the tank via a funnel or by direct pouring. While this structure is simple and inexpensive to manufacture, it has significant technical drawbacks in practical use, primarily inconvenience during oil replenishment and a high risk of contamination. Summary of the Invention

[0004] To improve oil replenishment efficiency, this application provides a Roots pump oil replenishment structure.

[0005] The oil replenishment structure for a Roots pump provided in this application adopts the following technical solution: A Roots pump oil replenishment structure includes a housing, an oil replenishment box, and a control board. The housing has an installation cavity for accommodating gears. The upper end of the housing has an oil replenishment port that communicates with the installation cavity. The oil replenishment box is detachably connected to the inner wall of the oil replenishment port and has an oil storage cavity. The lower end of the oil replenishment box has an oil outlet that communicates with the oil storage cavity and the installation cavity. One end of the control board is hinged to the inner wall of the installation cavity, and the other end of the control board is used to control the opening and closing of the oil outlet.

[0006] By adopting the above technical solution, the problem of introducing contaminants easily by the traditional open-cap refueling method is avoided, ensuring the cleanliness and oil level stability of the lubricating oil inside the gearbox. The oil outlet can be opened by rotating the control panel, improving the oil replenishment efficiency.

[0007] Preferably, it also includes a rotating column, the outer wall of the housing is provided with a rotating opening, the rotating column is rotatably connected to the inner wall of the rotating opening, and the lower end of the rotating column is fixedly connected to one end of the control board.

[0008] By adopting the above technical solution, the opening and closing of the oil replenishment channel can be precisely controlled from outside the casing, which not only makes the operation more convenient and labor-saving, but also effectively avoids oil contamination that may be caused by opening the cover, and significantly improves the sealing and reliability of the oil replenishment process.

[0009] Preferably, it also includes a limiting ring, which is coaxially fixedly connected to the outer wall of the rotating column, and the lower end face of the limiting ring abuts against the outer wall of the housing.

[0010] By adopting the above technical solution, the limiting ring structure effectively restricts the vertical movement of the rotating column during operation through axial positioning, ensuring the accuracy and stability of the transmission position between the rotating column and the control board, thereby improving the accuracy of oil replenishment flow control and the reliability of long-term operation, while reducing wear and abnormal leakage caused by component displacement.

[0011] Preferably, it also includes an operating ring, which is disposed above the limiting ring and is coaxially fixedly connected to the outer wall of the rotating column.

[0012] By adopting the above technical solution, the operating ring structure provides a wide and easy-to-apply operating interface, allowing users to easily and accurately rotate the rotating column from outside the housing, thereby indirectly controlling the opening and closing of the internal oil outlet. This greatly improves the convenience of operation and human-machine efficiency, while avoiding damage or contamination that may be caused by direct contact with precision parts.

[0013] Preferably, the outer wall of the operating ring is fixedly connected with a first anti-slip protrusion. The length direction of the first anti-slip protrusion is parallel to the axis of the operating ring. Multiple first anti-slip protrusions are provided, and the multiple first anti-slip protrusions are evenly spaced around the axis of the operating ring.

[0014] By adopting the above technical solution, the first anti-slip convex strip design significantly enhances the grip and torsional control precision during manual operation by increasing the friction coefficient of the operating ring surface, effectively preventing slippage and ensuring reliable torque transmission even in grease-contaminated or humid environments, thereby improving the smoothness, safety, and accuracy of oil replenishment adjustment operations.

[0015] Preferably, it also includes a cover, the upper end of the oil replenishment box is provided with a cleaning port, the inner wall of the cover is threaded to the outer wall of the oil replenishment box, and the cover is used to cover the cleaning port.

[0016] By adopting the above technical solution, the cover structure achieves a reliable seal with the oil replenishment box cleaning port through threaded connection. This not only prevents external contaminants from entering the oil storage chamber and ensures the cleanliness of the lubricating oil, but also facilitates disassembly for cleaning the oil chamber or replenishing grease. This achieves a balance between sealing and maintainability, effectively extending the maintenance cycle and service life of the oil replenishment system.

[0017] Preferably, a second anti-slip protrusion is fixedly connected to the outer wall of the cover. The length direction of the second anti-slip protrusion is parallel to the axis of the cover. Multiple second anti-slip protrusions are provided, and the multiple second anti-slip protrusions are evenly spaced around the axis of the cover.

[0018] By adopting the above technical solution, the second anti-slip ridge design significantly enhances the friction when manually turning the cover by optimizing the anti-slip texture on the surface of the cover, ensuring that it can still provide reliable operating force in oily environments, effectively preventing slippage, thereby improving the convenience of cover disassembly and assembly and the safety of operation, while maintaining the sealing integrity of the oil replenishment system.

[0019] Preferably, it also includes a filter screen, which is detachably connected to the inner wall of the oil storage chamber and is located between the cleaning port and the oil replenishment port.

[0020] By adopting the above technical solution, the detachable filter structure can effectively filter out solid particulate contaminants that may be contained in the replenishing grease through physical interception, ensuring the cleanliness of the lubricating oil entering the gearbox, thereby significantly reducing the risk of abnormal wear of gears and bearings, extending the service life of core transmission components, and facilitating regular cleaning or replacement to maintain filtration efficiency.

[0021] Preferably, it also includes a one-way valve. The outer wall of the oil replenishment box is provided with an exchange port, which is connected to the oil storage chamber. The one-way valve is threadedly connected to the inner wall of the exchange port and is used to allow external gas to enter the oil outlet chamber.

[0022] By adopting the above technical solution, the one-way valve structure allows external gas to enter the oil storage chamber in one direction, which can balance the internal and external air pressure during the oil replenishment process. This ensures that the grease can still flow smoothly and stably to the oil outlet under negative pressure conditions, effectively avoiding oil circuit interruption or uneven oil output caused by the formation of a vacuum in the chamber, and significantly improving the reliability and continuity of the oil replenishment process.

[0023] Preferably, it also includes a limiting post, which is fixedly connected to the inner wall of the mounting cavity and is used to abut against the control plate.

[0024] By adopting the above technical solution, the limiting column structure provides a precise mechanical limiting point for the control board, effectively limiting the excessive rotation stroke of the control board, ensuring the accuracy and consistency of the opening and closing state of the oil outlet, thereby achieving stable control of the replenishment flow, while preventing sealing failure or mechanical damage caused by excessive displacement of the control board, thus improving the durability and reliability of the system.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. It avoids the problem of introducing contaminants easily by the traditional open-cap refueling method, ensuring the cleanliness and oil level stability of the lubricating oil inside the gearbox. The oil outlet can be opened by turning the control panel, improving the oil replenishment efficiency. 2. The cover structure achieves a reliable seal with the oil replenishment box cleaning port through a threaded connection, which not only prevents external contaminants from entering the oil storage chamber and ensures the cleanliness of the lubricating oil, but also facilitates disassembly for cleaning or replenishing the oil chamber, achieving a balance between sealing and maintainability, and effectively extending the maintenance cycle and service life of the oil replenishment system. 3. The limiting column structure provides precise mechanical limiting points for the control board, effectively limiting the excessive rotation stroke of the control board, ensuring the accuracy and consistency of the opening and closing state of the oil outlet, thereby achieving stable control of the replenishment flow, while preventing seal failure or mechanical damage caused by excessive displacement of the control board, thus improving the durability and reliability of the system. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a Roots pump oil replenishment structure.

[0027] Figure 2 This is a cross-sectional view of the oil replenishment structure of a Roots pump.

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0029] Figure 4 This is a schematic diagram of the overall structure of the oil filling box, rotating column, limiting ring, operating ring and cover.

[0030] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Mounting cavity; 12. Oil filler port; 13. Rotating port; 2. Oil filler box; 21. Connecting column; 211. Oil outlet; 22. Oil storage cavity; 221. Ring body; 23. Cleaning port; 24. Exchange port; 3. Rotating column; 4. Control board; 5. Limiting ring; 6. Operating ring; 61. First anti-slip ridge; 7. Limiting column; 8. Cover body; 81. Second anti-slip ridge; 9. Filter screen; 10. One-way valve. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a Roots pump oil replenishment structure. (Refer to...) Figure 1 A Roots pump oil replenishment structure includes a housing 1 and an oil replenishment box 2.

[0033] Reference Figure 2 The housing 1 is provided with a mounting cavity 11 for accommodating gears. The upper end of the housing 1 is provided with an oil filling port 12, which is connected to the mounting cavity 11. The upper end of the housing 1 is provided with a rotating port 13, which is located on one side of the oil filling port 12. The axis of the rotating port 13 is parallel to the axis of the oil filling port 12.

[0034] Reference Figure 3The lower end of the oil replenishment box 2 is fixedly connected to a connecting post 21, which is threaded to the inner wall of the oil replenishment port 12. The oil replenishment box 2 is provided with an oil storage cavity 22, and the connecting post 21 is provided with an oil outlet 211. The oil outlet 211 is connected to the oil storage cavity 22 and the mounting cavity 11. The lower end face of the connecting post 21 is flush with the lower inner wall of the mounting cavity 11.

[0035] A Roots pump oil replenishment structure also includes a rotating column 3, a control plate 4, a limiting ring 5, an operating ring 6, a limiting post 7, a cover 8, a filter screen 9, and a one-way valve 10. The rotating column 3 is rotatably connected to the inner wall of the rotating port 13, and the lower end of the rotating column 3 is fixedly connected to one end of the control plate 4. The upper end face of the control plate 4 is attached to the lower inner wall of the mounting cavity 11, and the other end of the control plate 4 is used to control the opening and closing of the oil outlet 211.

[0036] Reference Figure 3 and Figure 4 The limiting ring 5 is coaxially fixedly connected to the outer wall of the rotating column 3, and the lower end face of the limiting ring 5 abuts against the outer wall of the housing 1. The operating ring 6 is located above the limiting ring 5 and is coaxially fixedly connected to the outer wall of the rotating column 3. The outer wall of the operating ring 6 is fixedly connected with a first anti-slip ridge 61. The length direction of the first anti-slip ridge 61 is parallel to the axis of the operating ring 6. There are multiple first anti-slip ridges 61, which are evenly spaced around the axis of the operating ring 6. The limiting post 7 is fixedly connected to the inner wall of the mounting cavity 11 and is located on the outer periphery of the oil filling port 12. The limiting post 7 is used to abut against the control plate 4. When the control plate 4 abuts against the limiting post 7, the oil outlet 211 is closed.

[0037] The upper end of the oil replenishment box 2 is coaxially provided with a cleaning port 23. The inner wall of the cover 8 is threadedly connected to the outer wall of the oil replenishment box 2, and the cover 8 is used to cover the cleaning port 23. A second anti-slip ridge 81 is fixedly connected to the outer wall of the cover 8. The length direction of the second anti-slip ridge 81 is parallel to the axis of the cover 8. There are multiple second anti-slip ridges 81, and the multiple second anti-slip ridges 81 are evenly spaced around the axis of the cover 8.

[0038] Reference Figure 3 An annular body 221 is fixedly connected to the inner wall of the oil storage chamber 22. The annular body 221 is located between the cleaning port 23 and the oil replenishment port 12. The filter screen 9 is detachably connected to the annular body 221 by screws. The outer wall of the oil replenishment box 2 is provided with an exchange port 24, which is connected to the oil storage chamber 22. The exchange port 24 is located between the filter screen 9 and the cleaning port 23. A one-way valve 10 is threadedly connected to the inner wall of the exchange port 24. The one-way valve 10 is used to allow external gas to enter the oil outlet chamber.

[0039] The implementation principle of the Roots pump oil replenishment structure in this application embodiment is as follows: when oil replenishment is required, the control ring 6 is rotated, the oil outlet 211 is opened, and the oil enters the mounting cavity 11. When the oil in the oil storage cavity 22 is insufficient, oil can be replenished through the exchange port 24 or the cleaning port 23. The operation is simple.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A Roots pump oil supplementing structure, characterized by: The device includes a housing (1), an oil filling box (2), and a control board (4). The housing (1) has an installation cavity (11) for accommodating gears. The upper end of the housing (1) has an oil filling port (12) connected to the installation cavity (11). The oil filling box (2) is detachably connected to the inner wall of the oil filling port (12). The oil filling box (2) has an oil storage cavity (22). The lower end of the oil filling box (2) has an oil outlet (211) connected to the oil storage cavity (22) and the installation cavity (11). One end of the control board (4) is hinged to the inner wall of the installation cavity (11), and the other end of the control board (4) is used to control the opening and closing of the oil outlet (211).

2. A Roots pump oil makeup structure according to claim 1, characterized in that: It also includes a rotating column (3), the outer wall of the housing (1) is provided with a rotating opening (13), the rotating column (3) is rotatably connected to the inner wall of the rotating opening (13), and the lower end of the rotating column (3) is fixedly connected to one end of the control plate (4).

3. A Roots pump oil makeup structure according to claim 2, wherein: It also includes a limiting ring (5), which is coaxially fixedly connected to the outer wall of the rotating column (3), and the lower end face of the limiting ring (5) abuts against the outer wall of the housing (1).

4. The oil replenishment structure for a Roots pump according to claim 3, characterized in that: It also includes an operating ring (6), which is located above the limiting ring (5) and is coaxially fixedly connected to the outer wall of the rotating column (3).

5. The oil replenishment structure for a Roots pump according to claim 4, characterized in that: The outer wall of the operating ring (6) is fixedly connected with a first anti-slip ridge (61). The length direction of the first anti-slip ridge (61) is parallel to the axis of the operating ring (6). There are multiple first anti-slip ridges (61), and the multiple first anti-slip ridges (61) are evenly spaced around the axis of the operating ring (6).

6. The oil replenishment structure for a Roots pump according to claim 1, characterized in that: It also includes a cover (8), the upper end of the oil replenishment box (2) is provided with a cleaning port (23), the inner wall of the cover (8) is threaded to the outer wall of the oil replenishment box (2), and the cover (8) is used to cover the cleaning port (23).

7. The oil replenishment structure for a Roots pump according to claim 6, characterized in that: The outer wall of the cover (8) is fixedly connected with a second anti-slip ridge (81). The length direction of the second anti-slip ridge (81) is parallel to the axis of the cover (8). There are multiple second anti-slip ridges (81), and the multiple second anti-slip ridges (81) are evenly spaced around the axis of the cover (8).

8. The Roots pump oil supplementing structure according to claim 6, characterized in that: It also includes a filter screen (9), which is detachably connected to the inner wall of the oil storage chamber (22) and is located between the cleaning port (23) and the oil replenishment port (12).

9. The oil replenishment structure for a Roots pump according to claim 1, characterized in that: It also includes a one-way valve (10), and the outer wall of the oil replenishment box (2) is provided with an exchange port (24), the exchange port (24) is connected to the oil storage chamber (22), the one-way valve (10) is threaded to the inner wall of the exchange port (24), and the one-way valve (10) is used to allow external gas to enter the oil outlet chamber.

10. The oil replenishment structure for a Roots pump according to claim 1, characterized in that: It also includes a limiting post (7), which is fixedly connected to the inner wall of the mounting cavity (11) and is used to abut against the control plate (4).

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