An oil injection device with filtration function for the maintenance of electromechanical equipment.

The oil injection device, designed with a double-layer filter plate and a guide plate, solves the problem of insufficient filtration in existing technologies, achieving efficient filtration of oil, ensuring clean operation of electromechanical equipment and extending its service life.

CN224580103UActive Publication Date: 2026-07-31SHENZHEN ZHONGLIANYU MECHANICAL & ELECTRICAL ENGINEERING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ZHONGLIANYU MECHANICAL & ELECTRICAL ENGINEERING CO LTD
Filing Date
2025-11-04
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The existing oil injection devices for maintenance of electromechanical equipment have a simple filtration structure, which results in a short residence time of oil on the filter components. This means that only some large particles of impurities can be removed, while small impurities can easily enter the equipment and accelerate wear and tear over time.

Method used

It adopts a double-layer filter plate design. The first filter plate is tilted at an angle to extend the residence time of the oil for preliminary filtration, while the second filter plate performs secondary fine filtration. Combined with the guide plate, the oil flow is quickly guided, and the funnel-shaped sealing cover prevents impurities from entering. The dual filtration structure improves the purity of the oil.

Benefits of technology

It effectively removes both large and small impurities, improves oil purity, reduces equipment wear, ensures the cleanliness of the oil injected into the equipment, and extends equipment life.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224580103U_ABST
    Figure CN224580103U_ABST
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Abstract

This utility model relates to the field of oil injection and filtration technology, specifically to an oil injection device with filtration function for the maintenance of electromechanical equipment. It includes a base plate, and a filter box fixedly connected to the upper surface of four supporting columns. The inner surface of the filter box has four sliding grooves, and two sets of sliders are slidably connected to the inner surfaces of the four sliding grooves. A filter plate (first type) is fixedly connected to the side surface of one set of sliders, and a filter plate (second type) is fixedly connected to the side surface of the other set of sliders. A conveying pipe is connected to the lower surface of the filter box, and an injection gun is fixedly connected to the other end of the conveying pipe. In this utility model, filter plate (first type) and filter plate (second type) are connected by an adaptive structure between the sliders and the sliding grooves. The slider angle is completely flush with the inner wall of the sliding groove. When removing the filter plate, only the hook needs to be used to hook the filter plate mesh; no additional removal of the fixing screws is required. The filter plate can be slowly pulled out along the direction of the sliding groove. If slight jamming occurs, only a slight adjustment of the filter plate angle is needed, facilitating filter plate replacement.
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Description

Technical Field

[0001] This utility model relates to the field of oil injection and filtration technology, specifically to an oil injection device with filtration function for the maintenance of electromechanical equipment. Background Technology

[0002] Electromechanical equipment generally refers to mechanical, electrical, and electrical automation equipment. Electromechanical equipment needs to be maintained regularly to ensure its safe operation. During maintenance, the internal oils need to be replaced.

[0003] An existing oil filling device for maintaining electromechanical equipment with a filtering function, such as the oil filling device for maintaining electromechanical equipment with a filtering function disclosed in Chinese Patent Application No. CN201220366017.5, uses a stainless steel filter screen fixed to the bottom of the oil inlet pipe to block dust and particles entering from the bottom. When the filter screen is clogged or dirty, it can be removed for cleaning and replacement, thus playing a protective and dustproof role. However, it only uses a filter screen to filter the oil, and its simple structure may lead to insufficient filtration. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an oil injection device with a filtration function for the maintenance of electromechanical equipment. This device can solve the problem that equipment often uses single-stage filtration or non-tilted filtration structures, resulting in short residence time of oil on the filter components. This only removes some large particles of impurities, while small impurities easily enter the interior of the electromechanical equipment with the oil, which will aggravate the wear of bearings, gears and other components of the equipment with long-term use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a base plate, an oil storage tank on the upper surface of the base plate, an inlet on the upper surface of the oil storage tank, an oil pump fixedly connected to the outer surface of the oil storage tank, a hose fixedly connected to the output end of the oil pump, and a filter box connected to the other end of the hose. Four support columns are fixedly connected to the upper surface of the base plate, and a filter box is fixedly connected to the upper surface of the four support columns. A hinge is fixedly connected to the side surface of the filter box, and a box cover is fixedly connected to the other end of the hinge. Four sliding grooves are provided on the inner surface of the filter box, and two sets of sliders are slidably connected to the inner surfaces of the four sliding grooves. A filter plate (first set) is fixedly connected to the side surface of one set of sliders, and a filter plate (second set) is fixedly connected to the side surface of the other set of sliders. A conveying pipe is connected to the lower surface of the filter box, and a filling gun is fixedly connected to the other end of the conveying pipe.

[0006] Preferably, a first fastener is fixedly connected to the side surface of the cover, and a second fastener is fixedly connected to the side surface of the filter box, with fixing pins inserted into the inner surfaces of the first fastener and the second fastener.

[0007] Preferably, the two sets of sliders are parallelogram-shaped.

[0008] Preferably, the first filter plate is located directly above the second filter plate, and the first filter plate and the second filter plate are at an inclined angle.

[0009] Preferably, a guide plate is provided on the inner surface of the filter box, and the guide plate is located below the second filter plate.

[0010] Preferably, a fixing frame is provided on the upper surface of the base plate, and the filling gun is located on the fixing frame.

[0011] Preferably, the outer surface of the filling gun is fitted with a sealing cover, which is funnel-shaped.

[0012] Compared with the prior art, this utility model provides an oil injection device with a filtering function for the maintenance of electromechanical equipment, which has the following beneficial effects:

[0013] 1. Filter plate one and filter plate two are connected by a sliding block and a sliding groove. The sliding block angle is completely fitted with the inner wall of the sliding groove. When removing them, you only need to hook the filter plate mesh with a hook. There is no need to remove the fixing screws. Slowly pull them out along the sliding groove. If you encounter slight jamming, you only need to finely adjust the angle of the filter plate to facilitate the replacement of the filter plate.

[0014] 2. The guide plate inside the filter box guides the filtered oil downwards quickly through its inclined structure, preventing oil from accumulating inside the filter box, reducing the filtration load, and ensuring oil delivery efficiency.

[0015] 3. The funnel-shaped sealing cover outside the filling gun can fit tightly against the oil filling port of the electromechanical equipment during filling, forming a sealed space, completely blocking external impurities from entering the oil filling port, preventing secondary pollution of the oil, and ensuring that the oil injected into the equipment is always clean.

[0016] 4. The first filter plate in the filter box adopts an inclined angle design to extend the residence time of the oil on the plate surface, effectively intercepting larger particulate impurities and performing preliminary purification of the oil. The second filter plate below further achieves secondary fine filtration, which can effectively remove tiny impurities. The dual filtration design greatly improves the purity of the oil, prevents impurities from entering the interior of the electromechanical equipment with the oil, reduces wear on equipment parts, and extends the service life of the electromechanical equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the oil injection device with filtration function for the maintenance of electromechanical equipment according to this utility model;

[0018] Figure 2 This is a top view of the filter box of this utility model;

[0019] Figure 3This utility model Figure 2 A magnified view of a portion of the image;

[0020] Figure 4 This is a schematic diagram of the filter flow guiding structure of this utility model;

[0021] Figure 5 This is a side sectional view of the filter box of this utility model.

[0022] In the diagram: 1. Base plate; 2. Oil storage tank; 3. Inlet; 4. Oil pump; 5. Hoses; 6. Support column; 7. Filter box; 8. Box cover; 9. First fastener; 10. Second fastener; 11. Fixing pin; 12. Hinge; 13. Conveying pipe; 14. Fixing frame; 15. Filling gun; 16. Sealing cover; 17. Slide groove; 18. Sliding block; 19. Filter plate one; 20. Filter plate two; 21. Guide plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 2 This embodiment of an oil injection device with filtering function for maintenance of electromechanical equipment includes a base plate 1, an oil storage tank 2 on the upper surface of the base plate 1, an inlet 3 on the upper surface of the oil storage tank 2, an oil pump 4 fixedly connected to the outer surface of the oil storage tank 2, a hose 5 fixedly connected to the output end of the oil pump 4, and a filter box 7 connected to the other end of the hose 5. Four support columns 6 are fixedly connected to the upper surface of the base plate 1, and the filter box 7 is fixedly connected to the upper surface of the four support columns 6. The design of the hose 5 facilitates the opening and closing of the box cover 8.

[0025] Please see Figure 2 - Figure 4A hinge 12 is fixedly connected to the side surface of the filter box 7. A cover 8 is fixedly connected to the other end of the hinge 12. A first fastener 9 is fixedly connected to the side surface of the cover 8. A second fastener 10 is fixedly connected to the side surface of the filter box 7. A fixing pin 11 is inserted into the inner surface of the first fastener 9 and the second fastener 10. Four sliding grooves 17 are provided on the inner surface of the filter box 7. Two sets of sliders 18 are slidably connected to the inner surface of the four sliding grooves 17. The two sets of sliders 18 are parallelogram-shaped and their angles fit against the sliding grooves 17. A filter plate 19 is fixedly connected to the side surface of one set of sliders 18, and a filter plate 20 is fixedly connected to the side surface of the other set of sliders 18. The filter plate 19 is located directly above the filter plate 20, and the filter plate 19 and the filter plate 20 are at an inclined angle. The design of the inclined angle between filter plate 19 and filter plate 20 increases the time oil spends on the filter plates, making the oil filtration more thorough. A guide plate 21 is provided on the inner surface of the filter box 7. The guide plate 21 is located below the filter plate 20. The design of the guide plate 21 can reduce the residence time of oil in the filter box 7 and prevent excessive oil volume from increasing the filtration difficulty. The lower surface of the filter box 7 is connected to a conveying pipe 13. The other end of the conveying pipe 13 is fixedly connected to a filling gun 15. A fixing frame 14 is provided on the upper surface of the bottom plate 1. The filling gun 15 is located on the fixing frame 14. A sealing cover 16 is fitted on the outer surface of the filling gun 15. The sealing cover 16 is funnel-shaped. When the filling gun 15 is filling, the filling port is sealed by the sealing cover 16 to prevent impurities from being introduced during the filling process.

[0026] The working principle of the above embodiment is as follows: when the oil level in the oil storage tank 2 is too low, oil is injected into the oil storage tank 2 through the inlet 3. When it is necessary to inject oil into the electromechanical equipment, the oil pump 4 on the outer surface of the oil storage tank 2 is started, and the oil pump 4 pumps the oil in the oil storage tank 2 to the filter box 7 through the hose 5.

[0027] After the oil enters the filter box 7, it first flows to the upper filter plate 19. The filter plate 19 is designed with an inclined angle, which prolongs the residence time of the oil on the plate surface and initially filters out larger particulate impurities. Then the oil flows naturally to the lower filter plate 20 for secondary fine filtration, further removing tiny impurities and improving the purity of the oil. After two filtrations, the oil falls onto the guide plate 21 on the inner surface of the filter box 7. The guide plate 21 guides the oil downward quickly through its inclined structure, reducing the residence time of the oil in the filter box 7 and preventing oil accumulation from increasing the filtration load. Then the oil flows to the filling gun 15 through the delivery pipe 13 on the lower surface of the filter box 7.

[0028] Before filling, the filling gun 15 is placed on the fixed frame 14 of the base plate 1 to keep it stable. During filling, the filling gun 15 is removed and aligned with the oil inlet of the electromechanical equipment through the pre-reserved delivery pipe 13 of sufficient length. At this time, the funnel-shaped sealing cover 16 on the outer surface of the filling gun 15 fits the oil inlet to form a sealed space to prevent external impurities from entering the equipment during the filling process. Finally, the filtered clean oil is injected into the electromechanical equipment by operating the filling gun 15 to complete the oil filling maintenance operation. After the oil filling operation is completed, the filling gun 15 is placed on the fixed frame 14, and the residual dripping oil in the sealing cover 16 is collected by the collection box under the sealing cover 16. After collection, the operator centrally processes the oil in the collection box.

[0029] When excessive impurities accumulate on the filter plate, affecting the filtration effect, the operator can remove the fixing pin 11 located in the first fastener 9 and the second fastener 10 to disengage the first fastener 9 from the second fastener 10. Then, holding the edge of the cover 8, the operator can rotate it upwards around the hinge 12 on the side surface of the filter box 7 to open the cover 8. First, remove the top filter plate 19 and observe the contact angle between the parallelogram-shaped sliders 18 and the grooves 17 on both sides. The operator can then slowly remove the filter plate by hooking it with a hook. If there is slight jamming, the angle can be adjusted slightly to ensure proper contact. Block 18 slides smoothly. After the first filter plate 19 is removed, the second filter plate 20 below is removed in the same way. After both filter plates are removed, the new second filter plate 20 is removed. The sliders 18 on both sides of the new filter plate 20 are aligned with the two sets of sliding grooves 17 on the upper part of the inner wall of the filter box 7. The sliders 18 are kept in complete contact with the sliding grooves 17. The new filter plate 20 is slowly pushed in along the inclined direction of the sliding grooves 17 until it is fully embedded and the position is stable. Then, the new first filter plate 19 is removed and the previous installation steps are repeated with the lower sliding groove 17. After completion, check whether the two filter plates are loose or misaligned.

[0030] The operator holds the open cover 8 and flips it downwards around the hinge 12 so that the cover 8 completely covers the top opening of the filter box 7. At this time, the position of the cover 8 is adjusted so that the first fastener 9 on the side surface is completely aligned with the second fastener 10 on the filter box 7. The fixing pin 11 is inserted horizontally along the hole until the end of the pin completely passes through the fastener, ensuring that the cover 8 is firmly fixed to prevent oil leakage or impurities from entering during subsequent oil filling. The oil pump 4 is started for a short trial run to observe whether there is any oil leakage at the connection between the filter box 7 and the cover 8. At the same time, a small amount of oil is discharged through the filling gun 15 to confirm that the new filter plate is installed in place and the filtration function is normal. Normal oil filling operation can then be resumed.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil injection device with filtering function for the maintenance of electromechanical equipment, characterized in that: The system includes a base plate (1), an oil storage tank (2) on the upper surface of the base plate (1), an inlet (3) on the upper surface of the oil storage tank (2), an oil pump (4) fixedly connected to the outer surface of the oil storage tank (2), a hose (5) fixedly connected to the output end of the oil pump (4), a filter box (7) connected to the other end of the hose (5), four support columns (6) fixedly connected to the upper surface of the base plate (1), a filter box (7) fixedly connected to the upper surface of the four support columns (6), and hinges fixedly connected to the side surface of the filter box (7). The hinge (12) is fixedly connected to a box cover (8) at the other end. The inner surface of the filter box (7) is provided with four sliding grooves (17). Two sets of sliders (18) are slidably connected to the inner surfaces of the four sliding grooves (17). A filter plate (19) is fixedly connected to the side surface of one set of sliders (18), and a filter plate (20) is fixedly connected to the side surface of the other set of sliders (18). The lower surface of the filter box (7) is connected to a conveying pipe (13), and a filling gun (15) is fixedly connected to the other end of the conveying pipe (13).

2. The oil injection device with filtering function for maintenance of electromechanical equipment according to claim 1, characterized in that: The side surface of the cover (8) is fixedly connected to a first fastener (9), and the side surface of the filter box (7) is fixedly connected to a second fastener (10). The inner surfaces of the first fastener (9) and the second fastener (10) are inserted with a fixing pin (11).

3. The oil injection device with filtering function for maintenance of electromechanical equipment according to claim 1, characterized in that: The two sets of sliders (18) are parallelogram-shaped.

4. An oil injection device with filtering function for the maintenance of electromechanical equipment according to claim 1, characterized in that: The first filter plate (19) is located directly above the second filter plate (20), and the first filter plate (19) and the second filter plate (20) are at an inclined angle.

5. An oil injection device with filtering function for the maintenance of electromechanical equipment according to claim 1, characterized in that: The inner surface of the filter box (7) is provided with a guide plate (21), which is located below the filter plate (20).

6. An oil injection device with filtering function for the maintenance of electromechanical equipment according to claim 1, characterized in that: A fixing frame (14) is provided on the upper surface of the base plate (1), and the filling gun (15) is located on the fixing frame (14).

7. An oil injection device with filtering function for the maintenance of electromechanical equipment according to claim 1, characterized in that: The outer surface of the filling gun (15) is fitted with a sealing cover (16), which is funnel-shaped.