Precise oil supply mechanism of electromagnetic lubrication pump
By designing an electromagnetic drive mechanism and an oil supply mechanism, the problem of unstable oil supply accuracy in traditional lubrication pumps has been solved, achieving high-precision oil supply and stable delivery, and meeting the lubrication needs of equipment under different working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING HARD LUBRICATION MASCH CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional lubrication pumps have difficulty guaranteeing oil supply accuracy. Wear of mechanical transmission components leads to fluctuations in oil supply, and the flow rate adjustment response is slow, making it difficult to meet the real-time and precise adjustment needs of equipment under different operating conditions.
An electromagnetic drive mechanism is adopted, which achieves precise control of the piston disc through the cooperation of electromagnetic coil and iron core. Combined with the design of one-way valve and connecting pipe, it realizes stable delivery and precise regulation of lubricating oil.
It achieves high-precision oil supply from the lubrication pump, ensuring the stability and accuracy of the oil supply, meeting the lubrication needs of the equipment under different operating conditions, and reducing mechanical wear and vibration.
Smart Images

Figure CN224397566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lubrication pump oil supply equipment, and in particular to a precision oil supply mechanism for an electromagnetic lubrication pump. Background Technology
[0002] In the operation of mechanical equipment, the lubrication system plays a vital role. It can effectively reduce friction and wear between mechanical parts, lower the operating temperature of the equipment, and extend the service life of the equipment. As the core component of the lubrication system, the accuracy of the lubrication pump directly affects the lubrication effect and the reliability of the equipment.
[0003] Traditional lubrication pumps, such as gear pumps and piston pumps, mainly rely on mechanical transmission to deliver lubricating oil. These pumps have several problems, making it difficult to guarantee the accuracy of oil supply. First, during long-term operation, the mechanical transmission components will experience fluctuations in pump displacement due to wear, clearance changes, and other factors, resulting in a significant deviation between the actual and theoretical oil supply. Second, traditional lubrication pumps have limited flow regulation methods, usually achieved by adjusting the speed or changing the pump's working volume. However, these regulation methods have slow response times and cannot meet the equipment's need for real-time and precise adjustment of lubricating oil volume under different operating conditions. Utility Model Content
[0004] The purpose of this invention is to solve the problems in the prior art by proposing a precise oil supply mechanism for an electromagnetic lubrication pump.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An electromagnetic lubrication pump precision oil supply mechanism includes a base plate, a lubrication pump body fixed to the top of the base plate, an oil inlet on the lubrication pump body, a mounting plate above the base plate, an oil supply mechanism on the base plate, and an electromagnetic drive mechanism on the base plate. The electromagnetic drive mechanism includes a cylinder fixed to the top of the mounting plate, an electromagnetic coil installed inside the cylinder, a power source fixed to the top of the base plate, and the two ends of the electromagnetic coil electrically connected to the positive and negative poles of the power source via wires.
[0007] Preferably, the electromagnetic drive mechanism further includes an iron core that slides inside the cylinder, and a return spring is sleeved on the outer surface of the iron core.
[0008] Preferably, the oil supply mechanism includes a piston cylinder fixed to the top of the mounting plate, a piston disc sliding inside the piston cylinder, a pressing rod fixed on the piston disc, the pressing rod being slidably connected to the piston cylinder, a movable disc fixed to the end of the pressing rod away from the piston disc, the movable disc being fixedly connected to one end of the iron core, and the two ends of the return spring being fixedly connected to the cylinder and the movable disc respectively.
[0009] Preferably, an oil storage tank is fixed to the top of the base plate, a top cover is rotatably mounted on the top of the oil storage tank, a connecting pipe is connected to the outer surface of the piston cylinder, and a flexible hose is connected between the connecting pipe and the oil storage tank.
[0010] Preferably, the outer surface of the piston cylinder is connected to a second connecting pipe, and a second flexible hose is connected between the second connecting pipe and the oil inlet. Both the second connecting pipe and the first connecting pipe are equipped with a one-way valve.
[0011] Preferably, a damper is fixed between the base plate and the mounting plate, and a buffer spring is sleeved on the outer surface of the damper. The two ends of the buffer spring are fixedly connected to the damper and the mounting plate, respectively.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. The electromagnetic drive mechanism achieves precise and efficient driving. When the electromagnetic coil inside the cylinder is energized, it generates a magnetic field that attracts the iron core to slide. When the power is cut off, the return spring resets the iron core. Compared with traditional mechanical transmission, this avoids the problem of unstable drive caused by component wear and gap changes. At the same time, by controlling the power supply to the electromagnetic coil, the movement frequency and stroke of the iron core can be precisely adjusted, thereby providing stable and precise power to the oil supply mechanism and ensuring that the lubrication pump achieves high-precision oil supply.
[0014] 2. The oil supply mechanism ensures stable and controllable delivery of lubricating oil. The piston disc reciprocates within the piston cylinder under the influence of the compression rod. With the help of the check valves on connecting pipes one and two, lubricating oil is drawn from the oil tank in an orderly manner and delivered stably to the oil inlet of the lubrication pump body. Furthermore, its movement is directly controlled by the iron core and moving disc of the electromagnetic drive mechanism. The amplitude and frequency of the piston disc's movement can be precisely adjusted according to actual needs, achieving precise control of the oil supply and meeting the lubrication requirements of the equipment under different operating conditions. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of a precision oil supply mechanism for an electromagnetic lubrication pump proposed in this utility model. Figure 1 ;
[0016] Figure 2 A three-dimensional structural diagram of a precision oil supply mechanism for an electromagnetic lubrication pump proposed in this utility model. Figure 2 ;
[0017] Figure 3 This is a front view of the overall structure of a precision oil supply mechanism for an electromagnetic lubrication pump proposed in this utility model;
[0018] Figure 4This is an internal view of the piston cylinder and cylinder structure of a precision oil supply mechanism for an electromagnetic lubrication pump proposed in this utility model.
[0019] Figure 5 This utility model proposes a precision oil supply mechanism for an electromagnetic lubrication pump. Figure 4 Enlarged view of the structure at point A in the middle;
[0020] Figure 6 This utility model proposes a precision oil supply mechanism for an electromagnetic lubrication pump. Figure 4 Enlarged view of the structure at point B in the middle.
[0021] In the diagram: 1. Base plate; 2. Lubrication pump body; 21. Oil inlet; 3. Mounting plate; 41. Piston cylinder; 42. Oil tank; 43. Connecting pipe one; 44. Hose one; 45. Connecting pipe two; 46. Hose two; 47. Check valve; 48. Piston disc; 49. Extrusion rod; 410. Moving disc; 51. Cylinder; 52. Electromagnetic coil; 53. Power supply; 54. Wire; 55. Iron core; 56. Return spring; 61. Damper; 62. Buffer spring. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Example 1
[0024] Reference Figures 1-6 An electromagnetic lubrication pump precision oil supply mechanism includes a base plate 1, a lubrication pump body 2 fixed on the top of the base plate 1, an oil inlet 21 on the lubrication pump body 2, an mounting plate 3 on the top of the base plate 1, an oil supply mechanism on the base plate 1, and an electromagnetic drive mechanism on the base plate 1. The electromagnetic drive mechanism includes a cylinder 51 fixed on the top of the mounting plate 3, an electromagnetic coil 52 installed inside the cylinder 51, a power supply 53 fixed on the top of the base plate 1, and the two ends of the electromagnetic coil 52 electrically connected to the positive and negative poles of the power supply 53 through wires 54, respectively.
[0025] Furthermore, the electromagnetic drive mechanism also includes an iron core 55 that slides inside the cylinder 51, and a return spring 56 is sleeved on the outer surface of the iron core 55.
[0026] Furthermore, the oil supply mechanism includes a piston cylinder 41 fixed to the top of the mounting plate 3, a piston disc 48 sliding inside the piston cylinder 41, a pressing rod 49 fixed on the piston disc 48, the pressing rod 49 being slidably connected to the piston cylinder 41, a movable disc 410 fixed to one end of the pressing rod 49 away from the piston disc 48, the movable disc 410 being fixedly connected to one end of the iron core 55, and the two ends of the return spring 56 being fixedly connected to the cylinder 51 and the movable disc 410 respectively.
[0027] Furthermore, an oil tank 42 is fixed to the top of the base plate 1, and a top cover is rotatably mounted on the top of the oil tank 42. A connecting pipe 43 is connected to the outer surface of the piston cylinder 41, and a flexible hose 44 is connected between the connecting pipe 43 and the oil tank 42.
[0028] Furthermore, the outer surface of the piston cylinder 41 is connected to a connecting pipe 45, and a hose 46 is connected between the connecting pipe 45 and the oil inlet 21. A one-way valve 47 is installed on both the connecting pipe 45 and the connecting pipe 43.
[0029] When the power supply 53 energizes the electromagnetic coil 52 inside the cylinder 51 through the wire 54, the electromagnetic coil 52 generates a magnetic field. According to the principle of electromagnetic induction, the magnetic field will generate a magnetic attraction force on the iron core 55 located inside the cylinder 51, attracting the iron core 55 to slide inside the cylinder 51. The return spring 56 sleeved on the outer surface of the iron core 55 is compressed when the iron core 55 is attracted and moved, storing elastic potential energy. When the electromagnetic coil 52 is de-energized, the magnetic field disappears, and the magnetic attraction force also disappears. At this time, the return spring 56 releases the elastic potential energy, pushing the iron core 55 to slide in the opposite direction and return to the initial position. By controlling the frequency and time of the on and off of the electromagnetic coil 52, the movement frequency and stroke of the iron core 55 can be precisely controlled, providing precise and stable power for the entire mechanism.
[0030] One end of the iron core 55 is fixedly connected to the movable disk 410. The movable disk 410 is connected to the piston disk 48 through the pressing rod 49. When the iron core 55 reciprocates under the action of the electromagnetic drive mechanism, it will drive the movable disk 410, the pressing rod 49, and the piston disk 48 to reciprocate within the piston cylinder 41. When the piston disk 48 moves away from the connecting pipe 43, the space in the piston cylinder 41 near the connecting pipe 43 increases, and the pressure decreases. Under atmospheric pressure, the lubricating oil in the oil tank 42 pushes open the one-way valve 47 on the connecting pipe 43. The lubricating oil enters the piston cylinder 41 through hose 44 and connecting pipe 43. When the piston disc 48 moves in the opposite direction, the lubricating oil in the piston cylinder 41 is squeezed, the pressure increases, and the one-way valve 47 leading to the connecting pipe 45 is pushed open. The lubricating oil is then transported to the oil inlet 21 of the lubrication pump body 2 through hose 46. This cycle is repeated, achieving a stable and controllable delivery of lubricating oil from the oil tank 42 to the lubrication pump body 2. Furthermore, the precise control of the piston disc 48's movement through the electromagnetic drive mechanism can accurately adjust the oil supply to meet the lubrication needs of the equipment under different operating conditions.
[0031] Based on Example 1, Example 2:
[0032] Reference Figures 1-6 ,
[0033] Furthermore, a damper 61 is fixed between the base plate 1 and the mounting plate 3. A buffer spring 62 is sleeved on the outer surface of the damper 61, and the two ends of the buffer spring 62 are fixedly connected to the damper 61 and the mounting plate 3, respectively.
[0034] The damper 61 and the buffer spring 62 between the base plate 1 and the mounting plate 3 constitute a shock absorption and buffer structure. During the operation of the electromagnetic drive mechanism and the oil supply mechanism, vibration and impact forces will be generated. The buffer spring 62 can absorb some of the vibration energy and alleviate the vibration through its own compression and extension. The damper 61 consumes the vibration energy through its internal damping medium, further reducing the vibration amplitude, reducing the impact and noise between moving parts, improving the stability of the mechanism operation, and thus ensuring that the oil supply accuracy is not affected by vibration.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A precision oil supply mechanism for an electromagnetic lubrication pump, comprising a base plate (1), characterized in that, A lubrication pump body (2) is fixed on the top of the base plate (1). An oil inlet (21) is provided on the lubrication pump body (2). An mounting plate (3) is provided above the base plate (1). An oil supply mechanism is provided on the base plate (1). An electromagnetic drive mechanism is also provided on the base plate (1). The electromagnetic drive mechanism includes a cylinder (51) fixed on the top of the mounting plate (3). An electromagnetic coil (52) is installed inside the cylinder (51). A power supply (53) is fixed on the top of the base plate (1). The two ends of the electromagnetic coil (52) are electrically connected to the positive and negative poles of the power supply (53) through wires (54).
2. The precision oil supply mechanism of an electromagnetic lubrication pump according to claim 1, characterized in that, The electromagnetic drive mechanism also includes an iron core (55) that slides inside the cylinder (51), and a return spring (56) is sleeved on the outer surface of the iron core (55).
3. The precision oil supply mechanism of an electromagnetic lubrication pump according to claim 2, characterized in that, The oil supply mechanism includes a piston cylinder (41) fixed to the top of the mounting plate (3), a piston disc (48) sliding inside the piston cylinder (41), a pressing rod (49) fixed on the piston disc (48), the pressing rod (49) being slidably connected to the piston cylinder (41), a movable disc (410) being fixed at one end of the pressing rod (49) away from the piston disc (48), the movable disc (410) being fixedly connected to one end of the iron core (55), and the two ends of the return spring (56) being fixedly connected to the cylinder (51) and the movable disc (410) respectively.
4. The precision oil supply mechanism of an electromagnetic lubrication pump according to claim 3, characterized in that, An oil tank (42) is fixed to the top of the base plate (1). The top of the oil tank (42) is rotated with a top cover. A connecting pipe (43) is connected to the outer surface of the piston cylinder (41). A flexible hose (44) is connected between the connecting pipe (43) and the oil tank (42).
5. The precision oil supply mechanism of an electromagnetic lubrication pump according to claim 4, characterized in that, The outer surface of the piston cylinder (41) is connected to a connecting pipe two (45), and a hose two (46) is connected between the connecting pipe two (45) and the oil inlet (21). A one-way valve (47) is installed on both the connecting pipe two (45) and the connecting pipe one (43).
6. The precision oil supply mechanism of an electromagnetic lubrication pump according to claim 1, characterized in that, A damper (61) is fixed between the base plate (1) and the mounting plate (3). A buffer spring (62) is sleeved on the outer surface of the damper (61). The two ends of the buffer spring (62) are fixedly connected to the damper (61) and the mounting plate (3) respectively.