A lubricating oil filtration device
The dual filtration structure and self-cleaning system solve the problems of low filtration accuracy and frequent maintenance of lubricating oil filtration devices, achieving efficient, stable and convenient lubricating oil filtration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING INST OF METROLOGY
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-26
AI Technical Summary
Existing lubricating oil filtration devices have low filtration accuracy, incomplete impurity removal, easy clogging of filter elements, and lack of effective cleaning mechanisms, resulting in decreased filtration efficiency, frequent maintenance, and increased operating costs and labor burden.
It adopts a dual filtration structure, including a fine filter element and a coarse filter screen, and is equipped with a hydraulic motor and solenoid valve to build a self-cleaning filtration system. The backwashing device extends the service life of the device.
It achieves efficient lubricating oil filtration, extends the service life of the device, reduces the maintenance frequency, and improves the stability and ease of maintenance of the equipment.
Smart Images

Figure CN224270369U_ABST
Abstract
Description
Technical Field
[0001] This utility model is a lubricating oil filtration device, belonging to the technical field of industrial lubrication equipment. Background Technology
[0002] In modern industrial production, lubricating oil is widely used in various mechanical transmission systems, playing a crucial role in reducing friction, cooling, cleaning, and sealing. However, during long-term operation, lubricating oil can become contaminated with impurities such as metal shavings, dust, and gum due to mechanical wear and environmental pollution. If not cleaned in time, this will seriously affect the normal operation of the equipment and may even cause serious malfunctions.
[0003] Existing lubricating oil filtration devices mostly employ a single filter element structure or a simple mesh filter, which generally suffers from low filtration accuracy, incomplete impurity removal, and easy clogging of the filter element. This leads to decreased filtration efficiency, high maintenance frequency, and affects the stability of continuous equipment operation. In addition, traditional filtration devices lack an effective cleaning mechanism, resulting in frequent filter element replacements, which increases operating costs and the burden of manual maintenance.
[0004] Therefore, there is an urgent need to provide a lubricating oil filtration device with a reasonable structure, high filtration efficiency, convenient maintenance, and self-cleaning function to meet the high standards of lubricating oil cleanliness required by industrial equipment. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lubricating oil filtration device to solve the problems mentioned in the background art. This utility model achieves further filtration of lubricating oil through dual filtration, and extends the service life of the device through a backflushing device.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a lubricating oil filtration device, comprising a base plate, a filter assembly at the top of the base plate, a filter chamber at one side of the filter assembly, a fine filter element inside the filter chamber, a support tube inside the filter chamber, a hydraulic motor fitted on the circumferential surface of the support tube, an oil outlet pipe at the bottom of the support tube, a solenoid valve at the top of the support tube, a housing cover threadedly connected to the top of the filter assembly, and the solenoid valve located at the top of the housing cover.
[0007] Furthermore, the filter assembly has a water outlet pipe on its circumferential surface, two support legs at its bottom, a water inlet pipe on its circumferential surface, and an oil inlet pipe at the top of the cover.
[0008] Furthermore, the top end of the oil inlet pipe is provided with an oil transfer pipe, and two flanges are fitted on the circumferential surface of the oil transfer pipe. One side end of each of the two flanges is provided with a threaded groove, and a transmission assembly is provided at the close end of the two flanges. The top end of the transmission assembly is provided with a regulating valve.
[0009] Furthermore, a protective shell is fixedly connected to the top of the device base plate, a second filter chamber is provided on one side of the protective shell, the filter assembly is located in the second filter chamber, a first filter chamber is provided on one side of the protective shell, a coarse filter screen is provided in the first filter chamber, and the oil transfer pipe is located at the top of the coarse filter screen.
[0010] Furthermore, a controller is fixedly connected to one side of the protective shell, a display is provided on one side of the controller, multiple control switches are fixedly connected to one side of the controller, and multiple rubber pads are fixedly connected to the bottom of the device base plate.
[0011] Furthermore, a water outlet is provided on one side of the protective shell, which is connected to a water outlet pipe; an oil outlet is provided on one side of the protective shell, which is connected to an oil outlet pipe; a water inlet is provided on one side of the protective shell, which is connected to a water inlet pipe; and an oil inlet pipe is provided on one side of the protective shell.
[0012] The beneficial effects of this utility model are as follows: This utility model provides a lubricating oil filtration device. Due to the addition of a fine filter element, filter components, solenoid valve, hydraulic motor, and coarse filter screen, and through our design improvements and actual use, this device has a reasonable structure and good practicality. It achieves further filtration of lubricating oil through dual filtration, and at the same time, the backflushing device extends the service life of this device. Attached Figure Description
[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a lubricating oil filtration device according to the present invention;
[0015] Figure 2 This is a side view of a lubricating oil filtration device according to the present invention;
[0016] Figure 3 This is a schematic diagram of the backflushing device of a lubricating oil filtration device according to the present invention;
[0017] Figure 4 This is a cross-sectional schematic diagram of the backflushing device of a lubricating oil filtration device according to the present invention.
[0018] In the diagram: 1-Equipment base plate; 2-Rubber pad; 3-Protective shell; 4-Oil transfer pipe; 5-Oil inlet pipe; 6-Flange; 7-Regulating valve; 8-Transmission assembly; 9-Oil input pipe; 10-First filter chamber; 11-Coarse filter screen; 12-Controller; 13-Display; 14-Control switch; 15-Second filter chamber; 16-Water outlet; 17-Oil outlet; 18-Water inlet; 19-Filter assembly; 20-Water inlet pipe; 21-Water outlet pipe; 22-Oil outlet pipe; 23-Support leg; 24-Box cover; 25-Fine filter element; 26-Support pipe; 27-Solenoid valve; 28-Hydraulic motor; 29-Filter chamber. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] Please see Figures 1-4 This utility model provides a technical solution: a lubricating oil filtration device, including a device base plate 1, a filter assembly 19 at the top of the device base plate 1, a filter chamber 29 at one side of the filter assembly 19, a fine filter element 25 inside the filter chamber 29, a support tube 26 inside the filter chamber 29, a hydraulic motor 28 sleeved on the circumferential surface of the support tube 26, an oil outlet pipe 22 at the bottom of the support tube 26, and a solenoid valve 27 at the top of the support tube 26. A box cover 24 is threadedly connected to the top of the filter assembly 19, and the solenoid valve 27 is located at the top of the box cover 24. This design solves the problem that traditional filtration devices lack an effective cleaning mechanism, require frequent filter element replacement, and increase operating costs and manual maintenance burden.
[0021] As the first embodiment of this utility model: a water outlet pipe 21 is provided on the circumferential surface of the filter assembly 19, two support legs 23 are provided at the bottom of the filter assembly 19, a water inlet pipe 20 is provided on the circumferential surface of the filter assembly 19, and an oil inlet pipe 9 is provided at the top of the cover 24. The water inlet pipe 20 and the water outlet pipe 21 are integrated on the outside of the filter assembly 19, and the support legs 23 and the oil inlet pipe 9 are combined to form a lubricating oil circulation filtration system with a reasonable structural layout, efficient fluid control, and strong operational stability; wherein the water inlet pipe 20 serves as the input channel for the cleaning medium, and in the backwashing stage, it is hydraulically... Motor 28 provides high-pressure water flow power to ensure that impurities on the filter element surface are efficiently removed; water outlet pipe 21 is used to discharge backwash wastewater in a timely manner to prevent secondary pollution and maintain a clean environment inside the system; two support legs 23 are symmetrically arranged at the bottom of the device, which not only provide stable support for the filter assembly 19, but also facilitate the space reserved between it and the ground, making maintenance and pipeline layout convenient; oil inlet pipe 9 is located at the top of the cover 24, serving as the main inlet for lubricating oil to enter the filter chamber 29, ensuring that the oil to be filtered can flow smoothly into the fine filter element 25 area for efficient purification treatment. An oil transfer pipe 4 is located at the top of the oil inlet pipe 9. Two flanges 6 are fitted onto the circumferential surface of the oil transfer pipe 4. Threaded grooves are opened on one side of each flange 6. A transmission assembly 8 is located at the close end of the two flanges 6. A regulating valve 7 is located at the top of the transmission assembly 8. A flow control and connection fixing structure consisting of flanges 6, transmission assembly 8, and regulating valve 7 is integrated on the oil transfer pipe 4, constructing a stable, precise, and well-sealed lubricating oil inlet control system. This effectively improves the fluid management accuracy and ease of operation of the lubricating oil filtration device during operation. The flange 6, as the core component of the pipeline connection, achieves a tight connection with adjacent equipment or pipelines through the threaded groove on one side, ensuring the sealing performance and structural stability of the overall oil circuit system. The transmission assembly 8 is located between the two flanges 6 and is responsible for transmitting the control signal of the regulating valve 7 to the internal valve core, achieving precise control of the oil flow. The regulating valve 7 is located at the top of the transmission assembly 8 and can be manually or automatically adjusted according to system pressure or filtration requirements, ensuring that the lubricating oil enters the filtration chamber 29 for purification at a suitable flow rate.A protective shell 3 is fixedly connected to the top of the device base plate 1. A second filter chamber 15 is opened on one side of the protective shell 3, and a filter assembly 19 is disposed in the second filter chamber 15. A first filter chamber 10 is opened on one side of the protective shell 3, and a coarse filter screen 11 is disposed in the first filter chamber 10. An oil transfer pipe 4 is disposed on the top of the coarse filter screen 11. The protective shell 3, which integrates the first filter chamber 10 and the second filter chamber 15, is set on the device base plate 1, and the coarse filter screen 11 and the filter assembly 19 are arranged sequentially inside it, thus constructing a multi-stage lubricating oil filtration system with a compact structure, clear functional division, and good protective performance. Among them, the protective shell 3 serves as an overall protective and functional integration structure, and does not... It not only provides dustproof, splashproof and shockproof protection for each filter component, but also ensures the cleanliness and safety of the equipment operating environment; the first filter chamber 10 is used to accommodate the coarse filter screen 11, which achieves the initial interception of large particulate impurities in the lubricating oil, reduces the filtration load of the subsequent fine filter element 25 and extends its service life; the second filter chamber 15, as the core purification area, provides a stable installation space for the filter component 19, ensuring that it maintains a good working condition under high pressure circulation conditions; the oil transfer pipe 4 is located at the top of the coarse filter screen 11, serving as a transition channel for lubricating oil from the coarse filtration stage to the fine filtration stage, ensuring that the oil maintains smooth flow and stable pressure during the step-by-step filtration process. A controller 12 is fixedly connected to one side of the protective shell 3. A display 13 is provided on one side of the controller 12. Multiple control switches 14 are fixedly connected to one side of the controller 12. Multiple rubber pads 2 are fixedly connected to the bottom of the device base plate 1. The protective shell 3 integrates an operation control system consisting of the controller 12, the display 13, and the control switches 14. Multiple rubber pads 2 are set at the bottom of the device base plate 1, thus constructing a lubricating oil filtration management system that features convenient human-machine interaction, intuitive operation, stable operation, and good shock absorption and protection performance. Among them, the controller 12 serves as the central control unit of the entire machine, not only controlling the various functions of the equipment but also... The energy module provides a centralized control interface and enables intelligent control of the filtration process, backwashing cycle, and oil pressure status. The display 13 provides real-time feedback of system operating parameters and fault information, improving operators' ability to understand the equipment status and their response speed. Multiple control switches 14 are located on the surface of the controller 12, facilitating function switching in manual mode and emergency operation, enhancing the system's flexibility and safety. Multiple rubber pads 2 are fixed to the bottom of the device base plate 1, effectively absorbing vibration energy generated during equipment operation, reducing noise pollution, and enhancing the adaptability and stability of the whole machine in different installation environments.A water outlet 16 is provided on one side of the protective shell 3, which is connected to the water outlet pipe 21. An oil outlet 17 is provided on one side of the protective shell 3, which is connected to the oil outlet pipe 22. A water inlet 18 is provided on one side of the protective shell 3, which is connected to the water inlet pipe 20. An oil inlet pipe 5 is provided on one side of the protective shell 3. The protective shell 3 is equipped with a water outlet 16, an oil outlet 17, a water inlet 18, and an oil inlet pipe 5 corresponding to the internal filtration system, thus constructing a lubricating oil circulation filtration and backwashing management system with a reasonable fluid channel layout, efficient media flow, and good sealing performance. Among them, the water outlet 16 serves as the backwash wastewater. The discharge outlet is connected to the water outlet pipe 21 to ensure that the impurities in the water after cleaning can be discharged in time to prevent secondary pollution; the oil outlet 17 is connected to the oil outlet pipe 22 to smoothly output the lubricating oil purified by the fine filter element 25 to the external lubrication system, ensuring the quality and continuous supply of oil used in the equipment; the water inlet 18 is connected to the water inlet pipe 20 to provide high-pressure water flow power to the hydraulic motor 28 during the backwashing stage, driving the support pipe 26 to rotate to remove impurities from the surface of the filter element; the oil inlet pipe 5 serves as the starting port for lubricating oil to enter the system, forming a complete oil circuit with the internal coarse filter screen 11 and the oil transfer pipe 4 to ensure that the oil to be treated is filtered step by step according to the process.
[0022] As a second embodiment of this utility model: This device constructs an intelligent lubricating oil purification device that integrates high-efficiency filtration, automatic cleaning, and stable oil discharge by setting a filter assembly 19 on the device base plate 1 and integrating a self-cleaning filtration system consisting of a fine filter element 25, a support pipe 26, a hydraulic motor 28, and a solenoid valve 27 inside it; the filter assembly 19, as the core processing unit, not only provides a stable installation environment for the fine filter element 25, but also provides a structural basis for the execution of the backwashing process; the filter chamber 29 is used to accommodate the fine filter element 25 and the support pipe 26, ensuring that the lubricating oil maintains a good flow state and filtration efficiency during the filtration process; the hydraulic motor 28 is sleeved on the outer wall of the support pipe 26, and in the backwashing process... The rinsing stage uses high-pressure oil flow to drive the rotational cleaning action, effectively removing impurities from the filter element surface and improving regeneration capacity. The solenoid valve 27, located at the top of the support pipe 26 and sealed by the cover 24, can precisely open and close the backwashing channel according to control system commands, achieving automated control of the cleaning process. The oil outlet pipe 22, located at the bottom of the support pipe 26, smoothly discharges the filtered or backwashed lubricating oil, ensuring continuous operation of the entire circulation system. This optimizes the self-cleaning capability and filtration accuracy of the lubricating oil filtration device, improving the stability and ease of maintenance during long-term operation. While enhancing functionality, it fully meets the application requirements of industrial lubrication systems for efficient, low-consumption, and intelligent filtration technology.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A lubricating oil filtration device, comprising a device base plate (1), characterized in that: The top of the device base plate (1) is provided with a filter assembly (19), and a filter chamber (29) is opened on one side of the filter assembly (19). A fine filter element (25) is provided in the filter chamber (29). A support tube (26) is provided in the filter chamber (29). A hydraulic motor (28) is fitted on the circumferential surface of the support tube (26). An oil outlet pipe (22) is provided at the bottom end of the support tube (26). A solenoid valve (27) is provided at the top end of the support tube (26). A box cover (24) is threadedly connected to the top end of the filter assembly (19). The solenoid valve (27) is located at the top end of the box cover (24). The filter assembly (19) has a water outlet pipe (21) on its circumferential surface, two support legs (23) at the bottom of the filter assembly (19), a water inlet pipe (20) on its circumferential surface, and an oil inlet pipe (9) at the top of the cover (24).
2. The lubricating oil filtering device according to claim 1, characterized in that: The top end of the oil inlet pipe (9) is provided with an oil transfer pipe (4), and two flanges (6) are fitted on the circumferential surface of the oil transfer pipe (4). One side end of each of the two flanges (6) is provided with a threaded groove, and a transmission assembly (8) is provided at the close end of the two flanges (6). A regulating valve (7) is provided at the top end of the transmission assembly (8).
3. The lubricating oil filtering device according to claim 2, characterized in that: The top of the device base plate (1) is fixedly connected to a protective shell (3). A second filter chamber (15) is provided on one side of the protective shell (3). The filter assembly (19) is located in the second filter chamber (15). A first filter chamber (10) is provided on one side of the protective shell (3). A coarse filter screen (11) is provided in the first filter chamber (10). The oil transfer pipe (4) is located at the top of the coarse filter screen (11).
4. The lubricating oil filtering device according to claim 3, characterized in that: A controller (12) is fixedly connected to one side of the protective shell (3), a display (13) is provided on one side of the controller (12), a plurality of control switches (14) are fixedly connected to one side of the controller (12), and a plurality of rubber pads (2) are fixedly connected to the bottom of the device base plate (1).
5. A lubricating oil filtration device according to claim 3, characterized in that: The protective shell (3) has a water outlet (16) on one side, which is connected to the water outlet pipe (21). The protective shell (3) has an oil outlet (17) on one side, which is connected to the oil outlet pipe (22). The protective shell (3) has an inlet (18) on one side, which is connected to the water inlet pipe (20). The protective shell (3) has an oil inlet pipe (5) on one side.