Filling machine for lubricating oil processing
By introducing a dual sealing mechanism into the lubricating oil filling machine, using a servo motor to drive a push-pull rod and an annular expansion ring to seal the discharge pipe, combined with laser liquid level sensor control, the problems of dripping and overflowing after lubricating oil filling are solved, achieving higher filling stability and safety.
Patent Information
- Application Number
- CN202520396220.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing lubricating oil filling machines are prone to lubricating oil dripping and overflowing after filling, leading to tank contamination.
A dual sealing mechanism is adopted. A servo motor drives a push-pull rod to seal the upper end of the discharge pipe with a rubber plug, and an air conveying mechanism and annular expansion ring are used to seal the lower end of the discharge pipe. Combined with a laser liquid level sensor for real-time monitoring and control, the discharge pipe is effectively sealed.
It effectively avoids lubricating oil dripping and overflow, prevents tank contamination, and improves the stability and safety of the filling process.
Smart Images

Figure CN223936210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filling machine technology, specifically to a filling machine for lubricating oil processing. Background Technology
[0002] After lubricating oil is produced, it needs to be filled. A search revealed CN211644572U, a leak-proof filling mechanism for lubricating oil processing. This mechanism includes a filling box, an external helical tube connected to the right end of the filling box, and a filling tube connected to the bottom end of the filling box. A drive box is fixedly connected to the top of the filling box, and a soft iron core is installed on the top of the drive box. An energized coil is wound around the outside of the soft iron core. Vertically distributed transmission rods are slidably connected to the bottom of the drive box inside the filling tube. This invention employs a bottom-mounted electromagnetic opening and closing structure, reducing lubricating oil leakage after a single filling, thus improving the stability of the filling mechanism. Furthermore, it features a trigger-type anti-overflow structure that automatically closes the filling mechanism when the lubricating oil is full, reducing overflow during the filling process and further improving the stability of the filling mechanism.
[0003] Existing technology uses a stopper to seal the lower end of the filling tube by moving downwards. However, lubricating oil is easily left at the lower end of the filling tube, and the residual lubricating oil can easily drip down, thus contaminating the tank. Therefore, we need a filling machine for lubricating oil processing. Utility Model Content
[0004] The purpose of this invention is to provide a filling machine for lubricating oil processing to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a filling machine for lubricating oil processing, comprising a filling tube, a liquid inlet threaded pipe fixedly connected to the side of the filling tube, a control box fixedly connected to the upper end of the filling tube, a push-pull rod extending into the filling tube slidably connected to the bottom of the control box, a rubber stopper fixedly connected to the lower end of the push-pull rod, an outlet pipe integrally formed at the lower end of the filling tube, an annular expansion ring provided on the inner wall of the outlet pipe, and an air supply mechanism for inflating the annular expansion ring and a control mechanism for driving the push-pull rod to move up and down respectively provided inside the control box.
[0006] Preferably, the control mechanism includes a servo motor, an adjusting screw, a limiting slide rod, and a movable plate. The servo motor and the limiting slide rod are both fixedly connected to the upper inner wall of the control box. The adjusting screw is fixedly connected to the output end of the servo motor. One end of the movable plate is threadedly connected to the adjusting screw, and the other end of the movable plate is slidably connected to the limiting slide rod. The upper end of the push-pull rod is fixedly connected to the lower surface of the movable plate.
[0007] Preferably, the gas delivery mechanism includes a gas delivery pipe, an annular airbag, multiple springs, and a pressing plate. The annular airbag is fixedly connected to the bottom of the control box. The multiple springs are fixedly connected in an annular array between the upper and lower inner walls of the annular airbag. The upper end of the gas delivery pipe is fixedly connected to the annular airbag, and the lower end of the gas delivery pipe is fixedly connected to the annular expansion ring. The pressing plate is positioned above the annular airbag and can apply pressure to the annular airbag.
[0008] Preferably, the pressing plate is fixedly connected to the outer surface of the push-pull rod.
[0009] Preferably, the side of the filling tube is fixedly connected with multiple clamping blocks, and the gas delivery tube is clamped inside the clamping blocks.
[0010] Preferably, a controller is fixedly connected to the inner wall of the control box, a laser liquid level sensor is fixedly connected to the side of the discharge pipe, and the laser liquid level sensor is signal-connected to the controller, and the controller is information-connected to the servo motor.
[0011] Preferably, the control box includes a box body and a maintenance panel, with the maintenance panel fixedly connected to the upper surface of the box body by bolts.
[0012] Beneficial effects
[0013] This utility model provides a filling machine for lubricating oil processing, which has the following beneficial effects:
[0014] 1. This lubricating oil filling machine, through a control mechanism, drives a push-pull rod to move downwards, which in turn moves a rubber stopper downwards, thereby blocking the upper end of the discharge pipe. By setting up an air supply mechanism and an annular expansion ring, the lower end of the discharge pipe can be blocked by the expansion of the annular expansion ring. Compared with the prior art, this utility model can achieve double blocking of the discharge pipe, thereby effectively preventing lubricating oil from dripping and contaminating the tank.
[0015] 2. This lubricating oil filling machine, by setting up a controller and a laser level sensor, can monitor the distance between the lubricating oil and the discharge pipe in real time. When the lubricating oil is close to the discharge pipe and is about to overflow, the laser level sensor sends a signal to the controller, which then controls the servo motor to move the push-pull rod downward. The downward movement of the push-pull rod can block the upper end of the discharge pipe. The downward movement of the push-pull rod also drives the pressing plate downward, which can apply pressure to the annular air bladder. This causes the air in the annular air bladder to enter the annular expansion ring through the air supply pipe. The expansion ring expands and seals the lower end of the discharge pipe. Compared with existing technologies, this prevents lubricating oil from overflowing and avoids contact with lubricating oil, thus effectively preventing the dripping caused by lubricating oil adhesion. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a filling machine for lubricating oil processing proposed in this utility model;
[0017] Figure 2 This is a cross-sectional view of the discharge pipe of a filling machine for lubricating oil processing proposed in this utility model;
[0018] Figure 3 This is a schematic cross-sectional view of the overall structure of a filling machine for lubricating oil processing proposed in this utility model;
[0019] Figure 4 This utility model proposes a filling machine for lubricating oil processing. Figure 3 A schematic diagram of the enlarged structure of A.
[0020] In the diagram: 1. Filling pipe; 2. Inlet threaded pipe; 3. Control box; 4. Push-pull rod; 5. Rubber stopper; 6. Discharge pipe; 7. Annular expansion ring; 8. Gas delivery mechanism; 9. Control mechanism; 10. Servo motor; 11. Adjusting screw; 12. Limiting slide bar; 13. Movable plate; 14. Gas delivery pipe; 15. Annular airbag; 16. Spring; 17. Pressing plate; 18. Locking block; 19. Controller; 20. Laser liquid level sensor; 21. Box body; 22. Maintenance board. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-4 This utility model provides a technical solution: a filling machine for lubricating oil processing, including a filling tube 1, a liquid inlet threaded tube 2 fixedly connected to the side of the filling tube 1, a control box 3 fixedly connected to the upper end of the filling tube 1, a push-pull rod 4 extending into the filling tube 1 slidably connected to the bottom of the control box 3, a rubber stopper 5 fixedly connected to the lower end of the push-pull rod 4, a discharge tube 6 integrally formed at the lower end of the filling tube 1, an annular expansion ring 7 provided on the inner wall of the discharge tube 6, and an air supply mechanism 8 for inflating the annular expansion ring 7 and a control mechanism 9 for driving the push-pull rod 4 to move up and down respectively inside the control box 3.
[0023] The control mechanism 9 includes a servo motor 10, an adjusting screw 11, a limiting slide bar 12, and a movable plate 13. The servo motor 10 and the limiting slide bar 12 are both fixedly connected to the upper inner wall of the control box 3. The adjusting screw 11 is fixedly connected to the output end of the servo motor 10. One end of the movable plate 13 is threadedly connected to the adjusting screw 11, and the other end of the movable plate 13 is slidably connected to the limiting slide bar 12. The upper end of the push-pull rod 4 is fixedly connected to the lower surface of the movable plate 13. By setting the control mechanism 9 to drive the push-pull rod 4 to move downward, the rubber stopper 5 can be driven downward, thereby blocking the upper end of the discharge pipe 6. By setting the air supply mechanism 8 and the annular expansion ring 7, the lower end of the discharge pipe 6 can be blocked by the expansion of the annular expansion ring 7. Compared with the prior art, this utility model can achieve double blocking of the discharge pipe 6, thereby effectively preventing the lubricating oil from dripping and causing pollution to the tank.
[0024] The gas delivery mechanism 8 includes a gas delivery pipe 14, an annular airbag 15, multiple springs 16, and a pressing plate 17. The annular airbag 15 is fixedly connected to the inner bottom of the control box 3. The multiple springs 16 are fixedly connected in an annular array between the upper and lower inner walls of the annular airbag 15. The upper end of the gas delivery pipe 14 is fixedly connected to the annular airbag 15, and the lower end of the gas delivery pipe 14 is fixedly connected to the annular expansion ring 7. The pressing plate 17 is located above the annular airbag 15 and can apply pressure to the annular airbag 15. The pressing plate 17 is fixedly connected to the outer surface of the push-pull rod 4.
[0025] Multiple locking blocks 18 are fixedly connected to the side of the filling tube 1, and the gas supply tube 14 is locked inside the locking blocks 18. By setting the locking blocks 18, the gas supply tube 14 can be locked and limited, thereby effectively preventing the gas supply tube 14 from shaking randomly.
[0026] A controller 19 is fixedly connected to the inner wall of the control box 3, and a laser level sensor 20 is fixedly connected to the side of the discharge pipe 6. The laser level sensor 20 is signal-connected to the controller 19, and the controller 19 is information-connected to the servo motor 10. By setting up the controller 19 and the laser level sensor 20, the distance between the lubricating oil and the discharge pipe 6 can be monitored in real time. When the lubricating oil is close to the discharge pipe 6 and is about to overflow, the laser level sensor 20 sends a signal to the controller 19, and the controller 19 then controls the servo motor 10. When the device is in operation, it can drive the push-pull rod 4 downward. The downward movement of the push-pull rod 4 can block the upper end of the discharge pipe 6. The downward movement of the push-pull rod 4 can also drive the pressing plate 17 downward, thereby applying pressure to the annular airbag 15. This causes the air in the annular airbag 15 to enter the annular expansion ring 7 through the air supply pipe 14. The expansion of the annular expansion ring 7 can seal the lower end of the discharge pipe 6. Compared with the existing technology, this method prevents lubricating oil from overflowing and avoids contact with lubricating oil, thus effectively preventing the dripping caused by the adhesion of lubricating oil.
[0027] The control box 3 includes a box body 21 and a maintenance plate 22. The maintenance plate 22 is fixedly connected to the upper surface of the box body 21 by bolts. By setting the maintenance plate 22, the box body 21 can be opened to carry out maintenance inside the box body 21, thus providing convenience for the staff.
[0028] Working principle: When this lubricating oil filling machine is in use, first connect the inlet threaded pipe 2 to the end of the lubricating oil delivery pipe. During filling, the servo motor 10 rotates forward, which drives the adjusting screw 11 to rotate, causing the movable plate 13 to move upward. The upward movement of the movable plate 13 drives the push-pull rod 4 to move upward, which in turn drives the rubber stopper 5 to move upward, thus opening the upper end of the discharge pipe 6. At the same time, the upward movement of the push-pull rod 4 also drives the pressing plate 17 to move upward. At this time, the spring 16 applies elastic force to the inner wall of the annular air bladder 15, causing the annular air bladder 15 to expand, thereby expanding the annular expansion ring. Air from pipe 7 is delivered to annular airbag 15 via air supply pipe 14, thereby opening the lower end of outlet pipe 6. At this time, lubricating oil can be smoothly filled through filling pipe 1 and outlet pipe 6. When the lubricating oil is full and about to overflow, the controller 19 and liquid level sensor work together to control the servo motor 10 to rotate in the opposite direction, thereby driving the rubber stopper 5 to move downward and block the upper end of outlet pipe 6. At the same time, the pressing plate 17 presses the annular airbag 15, causing the air in the annular airbag 15 to enter the annular expansion ring 7 from air supply pipe 14. The expansion of the annular expansion ring 7 can seal the lower end of outlet pipe 6.
[0029] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A filling machine for lubricating oil processing, comprising a filling pipe (1), characterized in that: The filling tube (1) is fixedly connected to the side of the liquid inlet threaded tube (2), the upper end of the filling tube (1) is fixedly connected to the control box (3), the bottom of the control box (3) is slidably connected to the push-pull rod (4) extending into the filling tube (1), the lower end of the push-pull rod (4) is fixedly connected to the rubber stopper (5), the lower end of the filling tube (1) is integrally formed with the discharge tube (6), the inner wall of the discharge tube (6) is provided with an annular expansion ring (7), and the inside of the control box (3) is respectively provided with an air supply mechanism (8) for inflating the annular expansion ring (7) and a control mechanism (9) for driving the push-pull rod (4) to move up and down.
2. The filling machine for lubricating oil processing according to claim 1, characterized in that: The control mechanism (9) includes a servo motor (10), an adjusting screw (11), a limiting slide bar (12), and a movable plate (13). The servo motor (10) and the limiting slide bar (12) are both fixedly connected to the upper inner wall of the control box (3). The adjusting screw (11) is fixedly connected to the output end of the servo motor (10). One end of the movable plate (13) is threadedly connected to the adjusting screw (11), and the other end of the movable plate (13) is slidably connected to the limiting slide bar (12). The upper end of the push-pull rod (4) is fixedly connected to the lower surface of the movable plate (13).
3. The filling machine for lubricating oil processing according to claim 1, characterized in that: The gas delivery mechanism (8) includes a gas delivery pipe (14), an annular airbag (15), multiple springs (16) and a pressing plate (17). The annular airbag (15) is fixedly connected to the bottom of the control box (3). Multiple springs (16) are arranged in an annular array and fixedly connected between the upper and lower inner walls of the annular airbag (15). The upper end of the gas delivery pipe (14) is fixedly connected to the annular airbag (15), and the lower end of the gas delivery pipe (14) is fixedly connected to the annular expansion ring (7). The pressing plate (17) is set above the annular airbag (15) and can apply pressure to the annular airbag (15).
4. A filling machine for lubricating oil processing according to claim 3, characterized in that: The pressing plate (17) is fixedly connected to the outer surface of the push-pull rod (4).
5. A filling machine for lubricating oil processing according to claim 3, characterized in that: The side of the filling tube (1) is fixedly connected with multiple clamps (18), and the gas supply tube (14) is clamped inside the clamps (18).
6. A filling machine for lubricating oil processing according to claim 2, characterized in that: The inner wall of the control box (3) is fixedly connected to a controller (19), and the side of the discharge pipe (6) is fixedly connected to a laser liquid level sensor (20). The laser liquid level sensor (20) is connected to the controller (19) by signal, and the controller (19) is connected to the servo motor (10) by information.
7. A filling machine for lubricating oil processing according to claim 1, characterized in that: The control box (3) includes a box body (21) and a maintenance board (22), which is fixedly connected to the upper surface of the box body (21) by bolts.