Electric lubricating pump

By adopting plunger pump structure and gear set in grease lubrication pumps, the power output is enhanced, and combined with the design of propeller blades and stirring rods, the problem of insufficient power output in the existing technology is solved, and the high consistency grease is achieved efficient pumping and stirring.

CN222278187UActive Publication Date: 2024-12-31SHANGHAI LIMADA MASCH CO LTD
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Patent Information

Application Number
CN202421193794.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-28
Publication Date
2024-12-31
Estimated Expiration
2034-05-28

AI Technical Summary

Technical Problem

The power output of existing grease lubrication pumps is weak and it is difficult to effectively pump high-consistency grease.

Method used

The plunger pump structure is adopted, combined with the gear set, eccentric wheel, bearing and elastic parts, and the eccentric wheel and bearing are driven through the active engagement of the gear set with the driven gear, and the plunger is reciprocated by the function of the elastic parts to enhance the power output; , the motor output shaft covers propeller blades and stirring rods, and the planetary gear speed reduction mechanism realizes stirring and pressure feeding of grease.

Benefits of technology

It improves the power output of grease pumping, ensures that high-consistency grease does not easily solidify and agglomerate, and achieves effective pumping of high-consistency grease.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN222278187U_ABST
    Figure CN222278187U_ABST
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Abstract

The utility model discloses an electric lubricating pump which comprises a mounting plate, an oil tank, a pump body, a motor and a pump support. The pump body is a plunger pump and comprises a cylinder body and a plunger arranged in the cylinder body in a reciprocating motion mode. The gear set comprises a driving gear and a driven gear, and a rotating shaft part of the driving gear is in driving connection with an output shaft of the motor; the eccentric wheel is fixedly sleeved on the rotating shaft part of the driven gear; the bearing is arranged on the periphery of the eccentric wheel in a sleeving mode and located below the positioning plate, and the outer wall of the bearing makes contact with the input end of the plunger to push the plunger to enter the cylinder body; the elastic piece is arranged between the input end of the plunger and the outer wall of the cylinder body and has the trend of acting on the plunger outwards to enable the plunger to be in contact with the outer wall of the bearing. The motor drives the driving gear to rotate, the driven gear drives the eccentric wheel to rotate, the eccentric wheel drives the bearing to rotate, the bearing pushes the plunger to move back and forth to enter the cylinder body, then the elastic piece enables the plunger to reset, and therefore grease is pumped back and forth.
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Description

Technical Field

[0001] The utility model relates to a grease lubrication pump, in particular to a grease lubrication pump driven by a motor. Background Art

[0002] Vehicles, power generation equipment, forging equipment, papermaking machinery, engineering machinery, textile machinery and other heavy-loaded and low-speed equipment are generally suitable for grease as a lubricating medium. Electric lubrication pumps are used to pump grease, and can achieve fixed-point quantitative pumping of grease in conjunction with quantitative distributors, pipelines and pipeline accessories.

[0003] For example, the Chinese invention application "Electric Lubrication Pump" with publication number CN114087518A previously applied by the applicant, the electric lubrication pump includes a mounting plate, a motor, a pump body and an oil tank, the oil tank is arranged below the mounting plate, the pump body is arranged in the oil tank, the motor is arranged on the mounting plate and has an output shaft extending downward into the oil tank, the output shaft is connected to the power input end of the pump body, a primary sun gear is arranged on the output shaft, a planetary gear reduction mechanism is arranged at the power output end of the motor, the power input end of the planetary gear reduction mechanism is meshed with the primary sun gear, the power output end is located in the oil tank and connected with a propeller blade for stirring grease and sending the grease into the oil suction port of the pump body. The motor passes through a concentric reducer, the high speed of the inner ring is used for normal pump body driving, and the low speed of the outer ring is used to drive the propeller blade to stir the grease, so that the grease with a higher viscosity is not easy to solidify and agglomerate, and is fed to the oil suction port of the pump body under the pressure of the spiral surface of the propeller blade.

[0004] However, the pump body in the above patent adopts a gear pump, and the power output is relatively weak. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a grease lubrication pump with stronger power output in view of the current status of the prior art.

[0006] The utility model adopts the following technical solution to solve the above technical problems: an electric lubrication pump, comprising

[0007] Mounting plate;

[0008] The oil tank is arranged below the mounting plate;

[0009] A pump body, arranged in the oil tank;

[0010] A motor is disposed on the mounting plate and has an output shaft extending downward into the oil tank, the output shaft being connected to a power input end of the pump body;

[0011] The pump bracket comprises at least one vertical rod and a positioning plate arranged at the lower end of the vertical rod, the upper end of the vertical rod is connected to the lower end surface of the mounting plate, and the lower surface of the positioning plate is used for mounting the pump body;

[0012] Features:

[0013] The pump body is a plunger pump, including a cylinder body and a plunger reciprocatingly arranged in the cylinder body; the electric lubrication pump also includes

[0014] The gear set is arranged in the positioning plate, and comprises a driving gear and a driven gear meshing with the driving gear, wherein the rotating shaft of the driving gear is drivingly connected to the output shaft of the motor;

[0015] The eccentric wheel is sleeved on the rotating shaft of the driven gear and is located below the positioning plate;

[0016] A bearing is sleeved on the outer periphery of the eccentric wheel and is located below the positioning plate, wherein the outer wall of the bearing contacts the input end of the plunger to push the plunger into the cylinder body;

[0017] The elastic member is arranged between the plunger input end and the outer wall of the cylinder body and below the positioning plate, and has a tendency to act outward on the plunger to make the plunger contact with the outer wall of the bearing.

[0018] The elastic member can adopt various structures. Preferably, the plunger includes a rod and a limiting boss connected to the rod; the elastic member is a coil spring sleeved outside the rod, and the two ends of the coil spring are respectively against the limiting boss and the cylinder body. The elastic member can also be a spring sheet or an elastic strip.

[0019] Preferably, there are two driven gears, which are meshed in sequence.

[0020] In order to press the grease into the oil suction port of the pump body, the output shaft of the motor is sheathed with a propeller blade for delivering the grease into the oil suction port of the pump body. The propeller blade is located above the positioning plate and in the oil tank. In this way, the motor drives the pump body to work and the propeller blade at the same time. The two powers are arranged concentrically. In addition, the propeller blade presses the grease into the oil suction port of the pump body, which can be used even for high-viscosity grease.

[0021] In order to stir the grease, a stirring rod for stirring the grease is connected to the upper surface of the propeller blade, and the stirring rod is located above the positioning plate and in the oil tank. In this way, the grease is stirred by the stirring rod and is not easy to solidify and agglomerate.

[0022] In order to improve the effect of the propeller blades, a cylindrical body is sleeved on the output shaft, and there are at least two propeller blades, which are spaced and distributed along the outer periphery of the cylindrical body. The propeller blades are large in number and reasonably distributed, and the effect is better.

[0023] In order to output a suitable speed, a planetary gear reduction mechanism is provided on the output shaft of the motor, and the planetary gear reduction mechanism includes a planetary gear meshed with the output shaft and a planetary carrier linked with the planetary gear;

[0024] The cylindrical body also includes a connecting rod fixed between the planet carrier and the cylindrical body. In this way, the output shaft indirectly drives the planet carrier to rotate, and the rotation of the planet carrier drives the propeller blades to rotate through the connecting rod, and the rotation speed of the propeller blades is relatively slow.

[0025] In order to fully utilize the space in the vertical pole, the vertical pole has an oil passage, the upper end of the oil passage is externally connected to an oil outlet joint, and the lower end of the oil passage is connected to an oil pipe connected to the oil outlet end of the pump body.

[0026] In order to fully utilize the space in the vertical pole, a wire is arranged in the vertical pole, and a heating element electrically connected to the wire is installed in the positioning plate.

[0027] Compared with the prior art, the utility model has the following advantages: by arranging a plunger pump, a gear set, an eccentric wheel, a bearing, and an elastic member, the power output is stronger and the stroke is more appropriate; the motor drives the driving gear to rotate, the driving gear meshes with the driven gear, the driven gear drives the eccentric wheel to rotate, the eccentric wheel drives the bearing to rotate, the bearing pushes the plunger into the cylinder body, and then the elastic member acts on the plunger outward to reset the plunger and contact the outer wall of the bearing, thereby reciprocatingly pumping grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an embodiment of the utility model;

[0029] Figure 2 for Figure 1 Schematic diagram after removing some parts;

[0030] Figure 3 for Figure 2 Schematic diagram from another angle;

[0031] Figure 4 It is a schematic diagram of the assembly of the output shaft, gear set, eccentric wheel, bearing, elastic member, etc. in the embodiment of the utility model;

[0032] Figure 5 for Figure 4 Exploded diagram of

[0033] Figure 6 for Figure 1 Cross-sectional view of . DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] See also Figure 1 to Figure 6 The electric lubrication pump comprises a mounting plate 1, an oil tank 2, a pump body 3, a motor 4, a pump bracket 5, a gear set 6, an eccentric wheel 7, a bearing 8, an elastic member 9 and other main components.

[0036] Among them, see Figure 1 , Figure 6 The oil tank 2 is arranged below the mounting plate 1.

[0037] See also Figure 2 to Figure 6 The pump body 3 is arranged in the oil tank 2; the pump body 3 is a plunger pump, including a cylinder 31 and a plunger 32 reciprocatingly arranged in the cylinder 31. The plunger 32 includes a rod 321 and a limiting boss 322 connected to the rod 321.

[0038] See also Figure 2 , Figure 3 The motor 4 is arranged on the mounting plate 1 and has an output shaft 41 extending downward into the oil tank 2, and the output shaft 41 is connected to the power input end of the pump body 3; in addition, the output shaft 41 of the motor 4 is sheathed with a propeller blade 10 for delivering grease to the oil suction port of the pump body 3, and the propeller blade 10 is located above the positioning plate 52 and between the vertical rods 51, and the propeller blade 10 is located in the oil tank 2. The output shaft 41 is also sheathed with a cylindrical body 20, and there are two propeller blades 10, which are spaced apart along the outer circumference of the cylindrical body 20, and the number of propeller blades 10 is adjusted as needed. The upper surface of the propeller blade 10 is connected with a stirring rod 60 for stirring the grease, and the stirring rod 60 is located above the positioning plate 52 and in the oil tank 2. The output shaft 41 of the motor 4 is provided with a planetary gear reduction mechanism 30. For the specific working principle of the planetary gear reduction mechanism 30, please refer to the Chinese invention application "Electric Lubrication Pump" with publication number CN114087518 A. The planetary gear reduction mechanism 30 includes a planetary gear meshing with the output shaft 41, a planetary carrier 30a linked with the planetary gear, and the planetary gear has multiple stages; and also includes a connecting rod 10a fixed between the planetary carrier 30a and the cylindrical body 20. The upper part of the motor 4 is covered with a cover 70 ( Figure 1 ).

[0039] See also Figure 2-3 The pump support 5 includes a vertical rod 51 and a positioning plate 52 arranged at the lower end of the vertical rod 51. The upper end of the vertical rod 51 is connected to the lower end surface of the mounting plate 1, and the lower surface of the positioning plate 52 is used for mounting the pump body 3. A wire is arranged in the vertical rod 51, and a heating element electrically connected to the wire is installed in the positioning plate 52. The vertical rod 51 has an oil passage, the upper end of which is externally connected to the oil outlet connector 50, and the lower end of which is connected to the oil pipe 40 connected to the oil outlet end of the pump body 3.

[0040] See also Figures 4 to 6 The gear set 6 is arranged in the positioning plate 52, and includes a driving gear 61 and a driven gear 62 meshing with the driving gear 61. The rotating shaft of the driving gear 61 is drivingly connected to the output shaft 41 of the motor 4; there are two driven gears 62, which are meshed in sequence.

[0041] The eccentric wheel 7 is sleeved on the rotating shaft of the driven gear 62 and is located below the positioning plate 52 .

[0042] The bearing 8 is sleeved on the outer periphery of the eccentric wheel 7 and is located below the positioning plate 52 . The outer wall of the bearing 8 contacts the input end of the plunger 32 to push the plunger 32 into the cylinder body 31 .

[0043] The elastic member 9 is disposed between the input end of the plunger 32 and the outer wall of the cylinder 31 and below the positioning plate 52, and has a tendency to act outward on the plunger 32 to make the plunger 32 contact the outer wall of the bearing 8. Preferably, the elastic member 9 is a coil spring sleeved outside the rod 321, and the two ends of the coil spring are respectively against the limiting boss 322 and the cylinder 31.

[0044] Here's how it works.

[0045] In addition to driving the pump body 3, the motor 4 also drives the propeller blades 10 and the stirring rod 60. The two driving forces are arranged concentrically. By setting the planetary gear reduction mechanism 30, the output shaft 41 rotates at a high speed, and the propeller blades 10 and the stirring rod 60 rotate at a relatively low speed. The following is a detailed introduction.

[0046] When the motor 4 works, its output shaft 41 drives the pump body 3 to work all the way. Specifically, the output shaft 41 drives the driving gear 61 to rotate, the driving gear 61 meshes with the driven gear 62, the driven gear 62 drives the eccentric wheel 7 to rotate, the eccentric wheel 7 drives the bearing 8 to rotate, the bearing 8 pushes the plunger 32 into the cylinder body 31, and the elastic member 9 acts on the plunger 32 outward to reset the plunger 32 and contact the outer wall of the bearing 8, thereby pumping grease back and forth. The pump body 3 is a plunger pump with strong power output.

[0047] The output shaft 41 of the motor 4 drives the propeller blades 10 and the stirring rod 60 to rotate. The stirring rod 60 stirs the grease, and the propeller blades 10 presses the grease to the oil suction port of the pump body 3.

[0048] This electric lubrication pump is suitable for 000#, 00#, and 0# grease. Even if the grease is relatively viscous and in paste form, this electric lubrication pump can still be used well.

Claims

1. An electric lubrication pump, comprising Mounting plate (1); An oil tank (2) is arranged below the mounting plate (1); A pump body (3) is arranged in the oil tank (2); A motor (4) is arranged on the mounting plate (1) and has an output shaft (41) extending downward into the oil tank (2), wherein the output shaft (41) is connected to a power input end of the pump body (3); The pump bracket (5) comprises at least one vertical rod (51) and a positioning plate (52) arranged at the lower end of the vertical rod (51), the upper end of the vertical rod (51) is connected to the lower end surface of the mounting plate (1), and the lower surface of the positioning plate (52) is used for mounting the pump body (3); Features: The pump body (3) is a plunger pump, comprising a cylinder body (31) and a plunger (32) reciprocatingly arranged in the cylinder body (31); the electric lubrication pump also includes The gear set (6) is arranged in the positioning plate (52), and comprises a driving gear (61) and a driven gear (62) meshing with the driving gear (61), wherein the rotating shaft of the driving gear (61) is drivingly connected to the output shaft (41) of the motor (4); An eccentric wheel (7) is sleeved on the rotating shaft of the driven gear (62) and is located below the positioning plate (52); A bearing (8) is sleeved on the outer periphery of the eccentric wheel (7) and is located below the positioning plate (52). The outer wall of the bearing (8) contacts the input end of the plunger (32) to push the plunger (32) into the cylinder body (31); The elastic member (9) is arranged between the input end of the plunger (32) and the outer wall of the cylinder body (31) and below the positioning plate (52), and has a tendency to act outward on the plunger (32) so that the plunger (32) contacts the outer wall of the bearing (8).

2. The electric lubrication pump according to claim 1, characterized in that: The plunger (32) comprises a rod (321) and a limiting boss (322) connected to the rod (321); the elastic member (9) is a coil spring sleeved outside the rod (321), and two ends of the coil spring respectively abut against the limiting boss (322) and the cylinder body (31).

3. The electric lubrication pump according to claim 1, characterized in that: There are two driven gears (62) which are meshed in sequence.

4. The electric lubrication pump according to claim 1, characterized in that: The output shaft (41) of the motor (4) is sheathed with a propeller blade (10) for delivering grease into the oil suction port of the pump body (3); the propeller blade (10) is located above the positioning plate (52) and inside the oil tank (2).

5. The electric lubrication pump according to claim 4, characterized in that: The upper surface of the propeller blade (10) is connected to a stirring rod (60) for stirring grease. The stirring rod (60) is located above the positioning plate (52) and inside the oil tank (2).

6. The electric lubrication pump according to claim 4, characterized in that: The output shaft (41) is sheathed with a cylindrical body (20), and the propeller blades (10) are at least two and are distributed at intervals along the outer circumference of the cylindrical body (20).

7. The electric lubrication pump according to claim 6, characterized in that: A planetary gear reduction mechanism (30) is provided on the output shaft (41) of the motor (4), and the planetary gear reduction mechanism (30) comprises a planetary gear meshing with the output shaft (41) and a planetary carrier (30a) linked to the planetary gear; It also includes a connecting rod (10a) fixed between the planet carrier (30a) and the cylindrical body (20).

8. The electric lubrication pump according to claim 1, characterized in that: The vertical rod (51) has an oil passage, the upper end of which is externally connected to an oil outlet joint (50), and the lower end of which is connected to an oil pipe (40) connected to the oil outlet end of the pump body (3).

9. The electric lubrication pump according to claim 1, characterized in that: A conductive wire is arranged in the vertical pole (51), and a heating element electrically connected to the conductive wire is installed in the positioning plate (52).