Electric grease pump

Abstract

The utility model discloses an electric grease pump which can improve the grease suction characteristic of a plunger pump. The electric grease pump comprises a pump base, a driving motor, a plunger pump, an oil tank, a grating disc, a first-stage oil pressing plate and a second-stage oil pressing plate, the driving motor, the grating disc, the plunger pump and the oil tank are installed on the pump base, an oil storage cavity is formed in the oil tank, the pump base is provided with an oil suction cavity, the grating disc separates the oil storage cavity from the oil suction cavity, and the first-stage oil pressing plate and the second-stage oil pressing plate are arranged on the grating disc. The first-stage oil pressing plate is installed at the output end of the driving motor and arranged in the oil storage cavity, the second-stage oil pressing plate is installed at the output end of the driving motor and arranged in the oil suction cavity, the plunger pump is arranged in the oil suction cavity, the second-stage oil pressing plate is located above the plunger pump, and the driving motor drives the plunger pump to continuously suck and discharge oil in a reciprocating mode. The driving motor drives the first-stage oil pressing plate to rotate to press grease in the oil storage cavity to the grating disc so as to press the grease in the oil storage cavity into the oil suction cavity, and the driving motor further synchronously drives the second-stage oil pressing plate to rotate to press the grease in the oil suction cavity to the plunger pump.

Description

Technical Field

[0001] The utility model relates to the field of lubrication equipment, in particular to an electric grease pump. Background Art

[0002] When using high-viscosity grease, the suction capacity is poor, the volume coefficient is too low, and the high-viscosity grease has a large flow resistance and often contains bubbles inside. If the plunger is used to form a vacuum in the cavity during the oil suction process, it is quite difficult to suck in enough grease in a short time. In this regard, the prior art grease pump is equipped with a grid plate, which can break and release the bubbles contained in the grease and squeeze the grease at the same time. However, due to the limited squeezing capacity, it is not enough to generate enough positive pressure to provide enough grease suction. In addition, when the grease flows through the grid plate, the resistance is large, the fluidity is poor, and it is not easy to be sucked.

[0003] Therefore, there is an urgent need for an electric grease pump that improves the grease suction characteristics of the plunger pump to overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to provide an electric grease pump which improves the grease suction characteristics of the plunger pump.

[0005] To achieve the above-mentioned purpose, the utility model provides a pump seat, a drive motor, a plunger pump, an oil tank, a grille plate, a primary oil pressure plate and a secondary oil pressure plate, wherein the drive motor, the grille plate, the plunger pump and the oil tank are respectively installed on the pump seat, an oil storage chamber is provided in the oil tank, the pump seat is provided with an oil suction chamber, the grille plate separates the oil storage chamber from the oil suction chamber, the primary oil pressure plate is installed at the output end of the drive motor and is arranged in the oil storage chamber, the secondary oil pressure plate is installed at the output of the drive motor and is arranged in the oil suction chamber, the plunger pump is arranged in the oil suction chamber, the secondary oil pressure plate is located above the plunger pump, the drive motor drives the plunger pump to perform continuous reciprocating oil suction and oil discharge actions, the drive motor drives the primary oil pressure plate to rotate and press the grease in the oil storage chamber toward the grille plate, so as to press the grease in the oil storage chamber into the oil suction chamber, and the drive motor also synchronously drives the secondary oil pressure plate to rotate and press the grease in the oil suction chamber toward the plunger pump. Electric grease pump

[0006] Preferably, the grille plate is provided with a plurality of oil-passing through holes, and the oil-passing through holes are provided with a slope structure which is arranged obliquely and faces the primary oil-pressing plate.

[0007] Preferably, the grille plate includes a plurality of radial plates extending radially and a plurality of circumferential plates extending circumferentially, the plurality of radial plates are arranged divergently with the center of the grille plate as the center, the plurality of circumferential plates are arranged with unequal diameters with the center of the grille plate as the center, and the radial plates intersect the circumferential plates.

[0008] Preferably, the radial plate is arranged in an inclined manner, and the side surface of the radial plate facing the oil through hole forms the inclined surface structure.

[0009] Preferably, the oil through holes arranged along the radial direction of the grille plate have different diameters.

[0010] Preferably, the first-stage oil pressure plate includes an upper flat pressure structure and an upper inclined pressure structure, the first end of the upper flat pressure structure is installed on the output end of the drive motor, the upper inclined pressure structure is connected to the second end of the upper flat pressure structure, and the upper inclined pressure structure has an upper oil pressure slope facing the grille plate.

[0011] Preferably, the secondary oil pressure plate includes a lower flat pressure structure and a lower inclined pressure structure, the first end of the lower flat pressure structure is installed on the output end of the drive motor, the lower inclined pressure structure is connected to the second end of the lower flat pressure structure, and the lower inclined pressure structure has a lower oil pressure slope facing the plunger pump.

[0012] Preferably, the inclination angle of the lower oblique pressure structure is greater than the inclination angle of the upper oblique pressure structure.

[0013] Preferably, a plurality of plunger pumps are installed in the oil suction chamber, and two symmetrically arranged secondary oil pressure plates are provided in the oil suction chamber.

[0014] Preferably, a cam is installed at the output end of the driving motor, and the plunger pump includes a pump body, a plunger rod and a one-way valve. The pump body has a through oil pumping passage, and the side of the pump body is provided with an oil inlet connected to the oil pumping passage. The first end of the plunger rod abuts against the side of the cam, and the second end of the plunger rod penetrates into the oil pumping passage. The one-way valve is arranged in the oil pumping passage, and a spring is arranged between the pump body and the first end of the plunger rod, and the spring always has a tendency to drive the first end of the plunger rod to press against the side of the cam.

[0015] Compared with the prior art, in the utility model, in addition to using the primary oil pressure plate to press the grease from the oil storage chamber into the oil suction chamber, the secondary oil pressure plate is also used to press the grease in the oil suction chamber into the plunger pump, thereby performing a secondary extrusion on the grease, increasing the positive pressure energy of the grease flowing to the plunger pump, and greatly improving the grease suction characteristics of the plunger pump. After the grease flows through the grille plate, the bubbles in the grease can be eliminated. In addition, the grille plate is provided with a plurality of oil through holes, and the oil through holes are provided with an inclined surface structure arranged obliquely. When the primary oil pressure plate presses the grease into the oil through hole, the grease can flow along the inclined surface structure, which helps to reduce the resistance to the flow of the grease compared to the vertical plane, so that the grease can flow downward more smoothly and flow into the oil suction chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a stereoscopic diagram of the electric grease pump of the utility model.

[0017] Figure 2 It is a front view of the electric grease pump of the utility model.

[0018] Figure 3 It is a cross-sectional view of the electric grease pump of the utility model.

[0019] Figure 4 It is a stereoscopic diagram of the electric grease pump of the utility model after the pump seat, the oil tank and the grille plate are hidden.

[0020] Figure 5 It is a three-dimensional diagram of a cam, a primary oil pressure plate, and a secondary oil pressure plate installed on the output shaft of a driving motor.

[0021] Figure 6 It is a three-dimensional diagram of the grille plate of the utility model.

[0022] Figure 7 It is a top view of the grille plate of the utility model.

[0023] Figure 8 is along Figure 7 The cross-sectional view obtained after cutting along the AA line segment. DETAILED DESCRIPTION

[0024] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the embodiments and the accompanying drawings.

[0025] like Figures 1 to 5 As shown, the utility model provides an electric grease pump 100, including a pump seat 10, a driving motor 20, a plunger pump 30, an oil tank 40, a grille plate 50, a primary oil pressure plate 60 and a secondary oil pressure plate 70. The driving motor 20, the grille plate 50, the plunger pump 30 and the oil tank 40 are respectively installed on the pump seat 10. An oil storage chamber 41 is provided in the oil tank 40, and the pump seat 10 is provided with an oil suction chamber 11. The grille plate 50 separates the oil storage chamber 41 from the oil suction chamber 11. The primary oil pressure plate 60 is installed at the output end of the driving motor 20 and is arranged in the oil storage chamber 41, the secondary oil pressure plate 70 is installed at the output end of the driving motor 20 and is arranged in the oil suction chamber 11, the plunger pump 30 is arranged in the oil suction chamber 11, and the secondary oil pressure plate 70 is located above the plunger pump 30. The driving motor 20 drives the plunger pump 30 to perform continuous reciprocating oil suction and oil discharge actions. The driving motor 20 drives the primary oil pressing plate 60 to rotate and press the grease in the oil storage chamber 41 toward the grille plate 50 (the grease is along the Figure 3 The oil flows in the direction of the middle arrow H) to press the grease in the oil storage chamber 41 into the oil suction chamber 11. The driving motor 20 also synchronously drives the secondary oil pressure plate 70 to rotate to press the grease in the oil suction chamber 11 toward the plunger pump 30.

[0026] In the present invention, in addition to using the primary oil pressing plate 60 to press the grease from the oil storage chamber 41 into the oil suction chamber 11, the secondary oil pressing plate 70 is also used to press the grease in the oil suction chamber 11 into the plunger pump 30, thereby performing a secondary squeeze on the grease, increasing the positive pressure energy of the grease flowing to the plunger pump 30, and greatly improving the grease suction characteristics of the plunger pump 30. After the grease flows through the grille plate 50, the bubbles in the grease can be eliminated.

[0027] like Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the grille plate 50 is provided with a plurality of oil through holes 51, and the oil through holes 51 are provided with an inclined inclined surface structure 52. When the primary oil pressing plate 60 presses the grease into the oil through holes 51, the grease can flow along the inclined surface structure 52, which helps to reduce the resistance of the grease flow compared to the vertical plane, so that the grease can flow downward more smoothly and flow into the oil suction chamber 11.

[0028] like Figure 6 , Figure 7 and Figure 8 As shown, the grille plate 50 includes a plurality of radial plates 53 extending in the radial direction and a plurality of circumferential plates 54 extending in the circumferential direction. The plurality of radial plates 53 are arranged divergently with the center of the grille plate 50 as the center, and the plurality of circumferential plates 54 are arranged with unequal diameters with the center of the grille plate 50 as the center. The radial plates 53 intersect with the circumferential plates 54. Preferably, the radial plates 53 are arranged in an inclined manner, and the side of the radial plates 53 facing the oil through holes 51 forms an inclined surface structure 52. The diameters of the oil through holes 51 arranged in the radial direction of the grille plate 50 are different.

[0029] Preferably, the closer the oil through hole 51 is to the edge of the grille plate 50, the larger the aperture is, and the oil inlet of the plunger pump 30 is arranged near the edge of the grille plate 50, thereby helping to guide the grease to flow to the oil through hole 51 near the grille plate 50, so that the grease falls directly into the vicinity of the oil inlet of the plunger pump 30, facilitating oil suction.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, the first-stage oil pressing plate 60 includes an upper flat pressing structure 61 and an upper inclined pressing structure 62, the first end of the upper flat pressing structure 61 is mounted on the output end of the driving motor 20, the upper inclined pressing structure 62 is connected to the second end of the upper flat pressing structure 61, and the upper inclined pressing structure 62 has an upper oil pressing inclined surface 63 facing the grille plate 50. When the first-stage oil pressing plate 60 is driven to rotate, the upper oil pressing inclined surface 63 presses the grease into the oil through hole 51.

[0031] The secondary oil pressure plate 70 includes a lower flat pressure structure 71 and a lower oblique pressure structure 72. The first end of the lower flat pressure structure 71 is mounted on the output end of the drive motor 20, and the lower oblique pressure structure 72 is connected to the second end of the lower flat pressure structure 71. The lower oblique pressure structure 72 has a lower oil pressure slope 73 facing the plunger pump 30. When the secondary oil pressure plate 70 is driven to rotate, the lower oil pressure slope 73 presses the grease toward the oil inlet of the plunger pump 30.

[0032] Preferably, the inclination angle of the upper oblique pressure structure 62 is greater than that of the lower oblique pressure structure 72 , and the upper oil pressure slope 63 is more inclined than the lower oil pressure slope 73 , so as to better press the grease in the oil storage chamber 41 toward the oil suction chamber 11 .

[0033] like Figures 1 to 5 As shown, a plurality of plunger pumps 30 are installed in the oil suction chamber 11, and two symmetrically arranged secondary oil pressing plates 70 are provided in the oil suction chamber 11. Using a plurality of plunger pumps 30 can pump oil at the same time, so two secondary oil pressing plates 70 are provided to press the grease in the oil suction chamber 11 into the oil inlet of the plunger pump 30 more quickly.

[0034] like Figure 3 , Figure 4 and Figure 5 As shown, a cam 21 is installed at the output end of the driving motor 20 .

[0035] The plunger pump 30 includes a pump body 31, a plunger rod 32 and a one-way valve 33. The pump body 31 has a through pump oil passage 311, and a side of the pump body 31 is provided with an oil inlet 312 connected to the pump oil passage 311. The first end of the plunger rod 32 abuts against the side of the cam 21, and the second end of the plunger rod 32 penetrates into the pump oil passage 311. The one-way valve 33 is arranged in the pump oil passage 311. A spring 34 is arranged between the pump body 31 and the first end of the plunger rod 32, and the spring 34 always has a tendency to drive the first end of the plunger rod 32 to abut against the side of the cam 21.

[0036] The driving motor 20 drives the cam 21 to rotate, and the cam 21 pushes the plunger rod 32 to penetrate the oil pump channel 311, and the plunger rod 32 pushes the grease in the oil pump channel 311 out (along the Figure 3 The cam 21 then rotates, and the plunger rod 32 is pushed by the spring 34 to keep close to the side of the cam 21. The plunger rod 32 passes through the oil pumping channel 311. At this time, the oil pumping channel 311 generates negative pressure, and the grease in the oil suction chamber 11 is sucked into the oil pumping channel 311 through the oil inlet 312 (along the oil pumping channel 311). Figure 3 The driving motor 20 drives the cam 21 to rotate continuously, so that the plunger pump 30 can continuously pump oil.

[0037] The following is a brief introduction to the working process of the electric grease pump 100 of the utility model: the drive motor 20 is started, and the drive motor 20 drives the primary oil pressure plate 60, the secondary oil pressure plate 70 and the cam 21 to rotate. The primary oil pressure plate 60 presses the grease toward the grille plate 50, and the grease flows through the oil through hole 51 and flows into the oil suction chamber 11. The secondary oil pressure plate 70 presses the grease in the oil suction chamber 11 toward the oil inlet 312 of the plunger pump 30. The drive motor 20 drives the cam 21 to rotate, and the cam 21 pushes the plunger rod 32 to penetrate the oil pump channel 311, pushing out the grease in the oil pump channel 311 to pump oil. The cam 21 then rotates, and under the push of the spring 34, the plunger rod 32 remains pressed against the side of the cam 21, and the plunger rod 32 penetrates the oil pump channel 311. The grease in the oil suction chamber 11 is sucked into the oil pump channel 311 through the oil inlet 312 under the negative pressure. The driving motor 20 drives the primary oil pressing plate 60, the secondary oil pressing plate 70 and the cam 21 to rotate continuously, so that oil can be pumped continuously.

[0038] The above disclosure is only a preferred example of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. An electric grease pump, characterized in that: The invention comprises a pump seat, a driving motor, a plunger pump, an oil tank, a grille plate, a primary oil pressure plate and a secondary oil pressure plate, wherein the driving motor, the grille plate, the plunger pump and the oil tank are respectively installed on the pump seat, an oil storage chamber is arranged in the oil tank, the pump seat is provided with an oil suction chamber, the grille plate separates the oil storage chamber from the oil suction chamber, the primary oil pressure plate is installed on the output end of the driving motor and is arranged in the oil storage chamber, the secondary oil pressure plate is installed on the output of the driving motor and is arranged in the oil suction chamber, the plunger pump is arranged in the oil suction chamber, the secondary oil pressure plate is located above the plunger pump, the driving motor drives the plunger pump to perform continuous reciprocating oil suction and oil discharge actions, the driving motor drives the primary oil pressure plate to rotate and press the grease in the oil storage chamber toward the grille plate, so as to press the grease in the oil storage chamber into the oil suction chamber, and the driving motor also synchronously drives the secondary oil pressure plate to rotate and press the grease in the oil suction chamber toward the plunger pump.

2. The electric grease pump according to claim 1, characterized in that: The grille plate is provided with a plurality of oil through holes, and the oil through holes are provided with an inclined surface structure which is arranged obliquely.

3. The electric grease pump according to claim 2, characterized in that: The grille plate includes a plurality of radial plates extending in the radial direction and a plurality of circumferential plates extending in the circumferential direction. The plurality of radial plates are arranged divergently with the center of the grille plate as the center, and the plurality of circumferential plates are arranged with unequal diameters with the center of the grille plate as the center, and the radial plates intersect with the circumferential plates.

4. The electric grease pump according to claim 3, characterized in that: The radial plate is arranged in an inclined manner, and the side surface of the radial plate facing the oil through hole forms the inclined surface structure.

5. The electric grease pump according to claim 2, characterized in that: The oil through holes arranged along the radial direction of the grille plate have different diameters.

6. The electric grease pump according to claim 1, characterized in that: The first-stage oil pressure plate includes an upper flat pressure structure and an upper inclined pressure structure. The first end of the upper flat pressure structure is installed on the output end of the drive motor, and the upper inclined pressure structure is connected to the second end of the upper flat pressure structure. The upper inclined pressure structure has an upper oil pressure slope facing the grille plate.

7. The electric grease pump according to claim 6, characterized in that: The secondary oil pressure plate includes a lower flat pressure structure and a lower inclined pressure structure. The first end of the lower flat pressure structure is installed on the output end of the drive motor, and the lower inclined pressure structure is connected to the second end of the lower flat pressure structure. The lower inclined pressure structure has a lower oil pressure slope facing the plunger pump.

8. The electric grease pump according to claim 7, characterized in that: The inclination angle of the lower oblique pressure structure is greater than the inclination angle of the upper oblique pressure structure.

9. The electric grease pump according to claim 1, characterized in that: A plurality of plunger pumps are installed in the oil suction chamber, and two symmetrically arranged secondary oil pressure plates are arranged in the oil suction chamber.

10. The electric grease pump according to claim 1, characterized in that: A cam is installed at the output end of the driving motor, and the plunger pump includes a pump body, a plunger rod and a one-way valve. The pump body has a through oil pumping passage, and a side of the pump body is provided with an oil inlet connected to the oil pumping passage. The first end of the plunger rod abuts against the side of the cam, and the second end of the plunger rod penetrates into the oil pumping passage. The one-way valve is arranged in the oil pumping passage, and a spring is arranged between the pump body and the first end of the plunger rod, and the spring always has a tendency to drive the first end of the plunger rod to press against the side of the cam.

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