Electrically powered grease lubrication pump

Abstract

The utility model discloses an electric grease lubrication pump, including pump body assembly, oil tank assembly and control unit. Pump body assembly includes pump base, base, planetary gear motor, oil filter screen disc and rotating pressboard, and planetary gear motor is located in the base, and its motor shaft drives rotating pressboard and rotating cam simultaneously, rotating pressboard is located on the oil filter screen disc upper end surface, is used for pressing grease to and passing through the oil filter screen disc, and rotating cam cooperates with plunger pump of one side of pump base, drives plunger reciprocation. The utility model discloses adopting planetary gear motor as single power source, has realized the high integration of transmission mechanism, has the advantages such as compact structure, stable and reliable operation, through setting up control unit and with low oil level transmitter, control panel and other components electric connection, has realized the intelligent control and system protection of lubrication pump, has effectively solved the technical problem of traditional lubrication pump structure complexity, single control function.

Description

Technical Field

[0001] This utility model relates to the field of grease lubrication pumps, and specifically to an electric grease lubrication pump. Background Technology

[0002] Grease pumps are indispensable automatic lubrication devices in modern machinery, widely used in machine tools, construction machinery, production lines, and other equipment that requires regular and quantitative grease replenishment. Their core function is to reliably pump grease from the tank and distribute it to various lubrication points via a distributor, ensuring the normal operation of the machinery, reducing wear, and extending its service life.

[0003] Traditional electric grease lubrication pumps include a pump body, an oil tank, a motor, and a piston assembly installed in the pump body. The motor drives the reciprocating motion of the piston assembly to complete the process of grease input and delivery.

[0004] Such lubrication pumps in the prior art typically have the following drawbacks:

[0005] Structural and reliability issues: Traditional drive mechanisms (such as ordinary motors with connecting rods) are complex in structure, bulky in size, and operate unstablely. Plunger pumps lack effective overload protection and backflow prevention design, resulting in unstable system pressure and easy pressure leakage after shutdown, leading to unreliable lubrication.

[0006] Issues with intelligence and convenience: It lacks oil level monitoring, making it prone to damage due to insufficient oil. Its fixed operating mode prevents flexible adjustment of lubrication cycles as needed. The refueling process is cumbersome and easily introduces impurities; the power interface has poor waterproofing, making maintenance inconvenient. Utility Model Content

[0007] This application aims to solve the above problems by providing an electric grease lubrication pump that is compact in structure, reliable in operation, intelligent in control, and easy to maintain.

[0008] To achieve the above objectives, this utility model provides an electric grease lubrication pump, including a pump body assembly and an oil tank assembly connected to the top of the pump body assembly, and also includes a control unit;

[0009] The pump assembly includes a pump base, a base, a planetary gear motor, an oil filter disc, and a rotating pressure plate;

[0010] The base is connected to the bottom of the pump base;

[0011] The planetary gear motor is located inside the base, with its motor shaft extending into the pump base and electrically connected to the control unit;

[0012] The oil filter screen is disposed between the top of the pump base and the bottom of the oil tank assembly;

[0013] The rotating pressure plate is connected to the motor shaft end of the planetary gear motor and is located on the upper end face of the oil filter screen. It is driven to rotate by the planetary gear motor to press the grease toward and through the oil filter screen.

[0014] A plunger pump is provided on one side of the pump base, and the plunger pump is connected to the inside of the pump base;

[0015] The planetary gear motor has a rotating cam located inside the pump base on its motor shaft. The rotating cam engages with the plunger end of the plunger pump to drive the plunger to reciprocate.

[0016] Furthermore, the plunger pump is equipped with a pressure gauge for monitoring the pressure inside the pump.

[0017] Furthermore, the fuel tank assembly is equipped with a low fuel level transmitter, which is electrically connected to the control unit and is used to output a low fuel level alarm signal when the fuel level is lower than a set value.

[0018] Furthermore, the plunger pump integrates a pressure regulating valve to adjust and prevent the working pressure of the lubrication pump from being overloaded.

[0019] Furthermore, the plunger pump integrates a check valve to prevent the discharged grease from flowing back into the pump seat.

[0020] Furthermore, the fuel tank assembly includes a fuel tank, a fuel tank cover, and a fuel tank flap on the fuel tank cover, wherein the fuel tank cover is provided with a filling port that is closed and connected to the fuel tank flap.

[0021] Furthermore, the base is provided with a control panel, which is electrically connected to the control unit and is used to set parameters and / or display the status of the control unit.

[0022] Furthermore, the base is equipped with a waterproof plug for connecting the power input terminal of the lubrication pump.

[0023] Furthermore, when the control unit receives a low oil level alarm signal from the low oil level transmitter, it executes an alarm action and / or stops the operation of the planetary gear motor.

[0024] Furthermore, a mounting base is provided on one side of the pump base.

[0025] The electric grease lubrication pump provided by this utility model, compared with the prior art, adopts a planetary gear motor as a single power source to simultaneously drive the rotating pressure plate to rotate and press oil and the rotating cam to drive the plunger pump to work, replacing the traditional complex linkage mechanism. It also integrates a control unit, realizing a high degree of integration and intelligent control of the transmission mechanism, reducing the overall size, and making the operation more stable, the noise lower, the transmission efficiency higher, and improving the reliability of the lubrication pump. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an electric grease lubrication pump according to the present invention;

[0027] Figure 2 This is a structural schematic diagram of an electric grease lubrication pump according to this utility model from another perspective;

[0028] Figure 3 This is a cross-sectional view of the internal structure of an electric grease lubrication pump according to the present invention.

[0029] Explanation of reference numerals in the attached figures

[0030] 10-Pump base; 11-Base; 111-Waterproof plug; 12-Planetary gear motor; 121-Rotary cam; 13-Oil filter screen; 14-Rotary pressure plate; 15-Plunger pump; 151-Pressure gauge; Low oil level indicator (not shown); 16-Control panel; 17-Mounting base;

[0031] 20-Oil drum; 21-Oil drum lid; 22-Oil drum flip lid; 23-Oil filler port. Detailed Implementation

[0032] The present invention will be described in detail below with reference to specific embodiments.

[0033] In this utility model, when directional terms appear, they are used to facilitate the description of this utility model and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this utility model.

[0034] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] like Figures 1 to 3 As shown, the present invention provides an electric grease lubrication pump, which includes a pump body assembly, an oil tank assembly connected to the top of the pump body assembly, and a control unit.

[0036] The pump assembly includes a pump base 10, a base 11, a planetary gear motor 12, an oil filter disc 13, and a rotating pressure plate 14. The base 11 is bolted to the bottom of the pump base 10, forming a stable support structure. The planetary gear motor 12 is installed inside the base 11, with its motor axis extending upwards into the pump base 10 and electrically connected to the control unit via a cable to receive control signals. The oil filter disc 13 is positioned between the top of the pump base 10 and the bottom of the oil tank assembly, and is secured with a sealing ring to ensure that grease can only enter the pump base 10 through the oil filter disc 13. The rotating pressure plate 14 is fixedly connected to the end of the motor shaft of the planetary gear motor 12 and is located on the upper surface of the oil filter disc 13; when the planetary gear motor 12 operates, it drives the rotating pressure plate 14 to rotate, pressing the grease in the oil tank assembly towards and through the oil filter disc 13, thus achieving grease filtration and transport.

[0037] A plunger pump 15 is provided on one side of the pump base 10. The plunger pump 15 is connected to the inside of the pump base 10 via a threaded connection or flange, forming a grease delivery channel. To further facilitate equipment integration, a mounting base 17 is vertically provided on the other side of the pump base 10. This mounting base 17 is an integrally formed structure with the pump base 10, used to securely mount the entire lubrication pump on mechanical equipment or a wall using bolts or other fasteners. A rotary cam 121 is also fixedly mounted on the motor shaft of the planetary gear motor 12, located inside the pump base 10. This rotary cam 121 engages with the plunger end of the plunger pump 15 (for example, through direct contact with the plunger end via the cam profile). When the motor shaft rotates, the rotary cam 121 rotates with the shaft, pushing the plunger to reciprocate, thereby pumping the grease in the pump base 10 out through the plunger pump 15.

[0038] The fuel tank assembly includes a fuel tank 20, a fuel tank cover 21, and a fuel tank flip-top 22. The fuel tank 20 is connected to the top of the pump base 10 via threads or snap-fit. The fuel tank cover 21 is sealed and installed on the upper end of the fuel tank 20. The fuel tank cover 21 has a filler port 23, which is hinged to the fuel tank flip-top 22 for easy and quick refueling and to prevent impurities from entering. The fuel tank assembly contains a low fuel level transmitter (not shown), which is fixed to the bottom of the fuel tank 20 by a bracket and electrically connected to the control unit. When the fuel level is lower than a set value, the low fuel level transmitter (not shown) outputs a low fuel level alarm signal to the control unit. Preferably, the low fuel level transmitter (not shown) is a float-type or capacitive sensor.

[0039] The control unit (e.g., a microcontroller) is integrated inside the base 11 and is electrically connected to the planetary gear motor 12, the low oil level indicator (not shown), the control panel 16, and the power input port. The control unit controls the start, stop, and speed of the planetary gear motor 12 according to a preset program. When the control unit receives a low oil level alarm signal from the low oil level indicator (not shown), it executes an alarm action (such as displaying alarm information via the control panel 16 or triggering an external audible and visual alarm) and / or stops the operation of the planetary gear motor 12 to prevent dry running from damaging the pump body.

[0040] In this embodiment, a control panel 16 is provided on the base 11. The control panel 16 is fixed to the outside of the base 11 with screws and is electrically connected to the control unit. The control panel 16 includes an LCD screen and buttons for setting parameters (such as lubrication cycle and running time) and displaying status (such as pressure, oil level, and fault codes) of the control unit. A waterproof plug 111 is provided on the base 11 for connecting the power input terminal of the lubrication pump. The waterproof plug 111 conforms to the IP67 standard and is connected to an external power source via a cable to ensure safe use in humid environments.

[0041] In this embodiment, a pressure gauge 151 is installed on the plunger pump 15. The pressure gauge 151 is connected to the outlet of the plunger pump 15 or the pump base 10 via a threaded interface for real-time monitoring of the grease pressure inside the pump, facilitating user observation of the system status. The plunger pump 15 integrates a pressure regulating valve with a spring-loaded structure. The user can adjust the spring preload by adjusting the screw to set the maximum working pressure, preventing overload of the lubrication pump and protecting system safety. Simultaneously, the plunger pump 15 also integrates a check valve with a ball and spring structure, installed in the outlet channel of the plunger pump 15. This prevents discharged grease from flowing back into the pump base 10 when the pump is stopped, avoiding system depressurization and lubrication failure.

[0042] Working principle:

[0043] Under normal operating conditions, the control unit starts the planetary gear motor 12 according to the set parameters. The motor drives the rotating pressure plate 14 to rotate, pressing the grease from the oil tank assembly onto the oil filter screen 13. The filtered grease then enters the pump seat 10. Simultaneously, the rotating cam 121 on the motor shaft drives the plunger of the plunger pump 15 to reciprocate, pumping the grease from the pump seat 10 out through the plunger pump 15 and delivering it to the lubrication point via the pressure regulating valve and the check valve. The pressure gauge 151 displays the system pressure in real time, and the pressure regulating valve ensures that the pressure does not exceed the set value. A low oil level indicator (not shown) monitors the oil level and triggers an alarm when abnormalities occur. The entire system has a compact structure, operates smoothly, and achieves intelligent lubrication control.

[0044] Where there is no conflict, the above embodiments and features can be combined with each other.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An electric grease lubrication pump, comprising a pump body assembly and an oil tank assembly connected to the top of the pump body assembly, characterized in that, It also includes a control unit; The pump assembly includes a pump base, a base, a planetary gear motor, an oil filter disc, and a rotating pressure plate; The base is connected to the bottom of the pump base; The planetary gear motor is located inside the base, with its motor shaft extending into the pump base and electrically connected to the control unit; The oil filter screen is disposed between the top of the pump base and the bottom of the oil tank assembly; The rotating pressure plate is connected to the motor shaft end of the planetary gear motor and is located on the upper end face of the oil filter screen. It is driven to rotate by the planetary gear motor to press the grease toward and through the oil filter screen. A plunger pump is provided on one side of the pump base, and the plunger pump is connected to the inside of the pump base; The planetary gear motor has a rotating cam located inside the pump base on its motor shaft. The rotating cam engages with the plunger end of the plunger pump to drive the plunger to reciprocate.

2. The electric grease lubrication pump according to claim 1, characterized in that, The plunger pump is equipped with a pressure gauge for monitoring the pressure inside the pump.

3. The electric grease lubrication pump according to claim 1, characterized in that, The fuel tank assembly is equipped with a low fuel level transmitter, which is electrically connected to the control unit and is used to output a low fuel level alarm signal when the fuel level is lower than a set value.

4. The electric grease lubrication pump according to claim 1, characterized in that, The plunger pump is integrated with a pressure regulating valve to adjust and prevent the working pressure of the lubrication pump from being overloaded.

5. The electric grease lubrication pump according to claim 1, characterized in that, The plunger pump is equipped with a check valve to prevent the discharged grease from flowing back into the pump seat.

6. The electric grease lubrication pump according to claim 1, characterized in that, The fuel tank assembly includes a fuel drum, a fuel drum cover, and a fuel drum flap on the fuel drum cover. The fuel drum cover has a filling port that is closed and connected to the fuel drum flap.

7. The electric grease lubrication pump according to claim 1, characterized in that, The base is equipped with a control panel, which is electrically connected to the control unit and is used to set parameters and / or display the status of the control unit.

8. The electric grease lubrication pump according to claim 1, characterized in that, The base is equipped with a waterproof plug for connecting to the power input terminal of the lubrication pump.

9. The electric grease lubrication pump according to claim 3, characterized in that, When the control unit receives a low oil level alarm signal from the low oil level transmitter, it executes an alarm action and / or stops the operation of the planetary gear motor.

10. The electric grease lubrication pump according to claim 1, characterized in that, A mounting base is provided on one side of the pump base.

Images