Electric gear lubrication pump

Abstract

The application discloses a kind of electric gear lubrication pumps, which can ensure that pipeline realizes pressure relief at normal speed when equipment stops.The electric gear lubrication pump of the application includes driving motor, pump base, gear pump and oil tank, the pump base is provided with an oil storage cavity, the gear pump is installed in the oil storage cavity, the driving motor is installed in the pump base, the gear pump is connected to the output end of the driving motor, the driving motor drives the gear pump to operate, the oil tank is installed in the pump base, the oil tank is communicated with the oil storage cavity, the pump base is provided with a pump oil passage, the oil inlet of the gear pump is opened in the oil storage cavity, the oil outlet of the gear pump is communicated with the pump oil passage, the pump base is provided with a pressure relief hole opened in the oil storage cavity and communicated with the pump oil passage, a plug is installed in the pressure relief hole, the plug is installed in the pressure relief hole in a non-tight fit, so as to form an oil passing gap between the hole wall of the pressure relief hole and the plug.

Description

Technical Field

[0001] This invention relates to the field of lubrication pumps, and more particularly to an electric gear lubrication pump. Background Technology

[0002] Electric gear lubrication pumps are used to quantitatively and centrally output grease from an oil tank. Traditional electric gear lubrication pumps consist of a pump body, oil tank, motor, and a gear pump mounted within the pump body. The motor drives the gear pump to complete the input and delivery of lubricating oil. In addition, electric gear lubrication pumps are generally equipped with a pressure relief mechanism. When the electric gear lubrication pump stops, the pressure relief mechanism activates to directly return the high-pressure oil in the main oil circuit to the oil tank. In actual use, to save costs, customers may use some inferior oil, and to meet the required consistency, they may add talcum powder to the oil. Because the gear clearance is very small, when the equipment stops, the talcum powder can clog the gear clearance, preventing the equipment from releasing pressure normally, or causing the equipment to take a very long time to release pressure. Therefore, there is an urgent need for an electric gear lubrication pump that ensures normal pressure relief in the pipeline when the equipment stops to overcome the above-mentioned defects. Summary of the Invention

[0003] The purpose of this invention is to provide an electric gear lubrication pump that ensures that the pipeline depressurizes at a normal speed when the equipment is shut down.

[0004] To achieve the above objectives, the electric gear lubrication pump provided by the present invention includes a drive motor, a pump base, a gear pump, and an oil tank. The pump base has an oil storage chamber, the gear pump is installed in the oil storage chamber, the drive motor is installed on the pump base, and the gear pump is connected to the output end of the drive motor. The drive motor drives the gear pump to operate. The oil tank is installed on the pump base and communicates with the oil storage chamber. The pump base has an oil pumping channel. The oil inlet of the gear pump opens into the oil storage chamber, and the oil outlet of the gear pump communicates with the oil pumping channel. The pump base has a pressure relief hole that opens into the oil storage chamber and communicates with the oil pumping channel. A plug is installed in the pressure relief hole. The plug is installed in a non-tight fit configuration in the pressure relief hole to create an oil passage gap between the hole wall and the plug.

[0005] Preferably, the pump base includes a first mounting base and a second mounting base, which are mounted together and enclose an oil storage chamber. A drive motor is mounted on the first mounting base, and the drive motor and the second mounting base are respectively located on both sides of the first mounting base. An oil tank is mounted on the top of the first mounting base and the second mounting base.

[0006] Preferably, the oil pump channel is located inside the first mounting base, and an oil outlet structure protrudes from the first mounting base toward the oil storage chamber. A portion of the oil pump channel is located within the oil outlet structure, and a pressure relief hole is opened in the oil outlet structure.

[0007] Preferably, the first mounting base also has a mounting body protruding into the oil storage chamber, the oil outlet structure is adjacent to the mounting body, and the gear pump is mounted on the mounting body.

[0008] Preferably, the pressure relief hole is provided with a connecting structure, and the plug is installed in the pressure relief hole by connecting with the connecting structure.

[0009] Preferably, the connecting structure is a sharpened threaded structure, and the plug is connected to the connecting structure by a threaded connection.

[0010] Preferably, the plug is a columnar or block-shaped structure.

[0011] Preferably, a structural ring protrudes from the first mounting base into the oil reservoir, and the structural ring encloses a placement space, in which the gear pump is placed.

[0012] Preferably, a pressure relief valve is installed on the pump oil passage.

[0013] Preferably, the oil outlet of the pump oil passage is located on the second mounting base.

[0014] Compared with the prior art, in this invention, a pressure relief hole is provided on the pump base, which opens into the oil storage chamber and communicates with the pump oil channel. A plug is installed in the pressure relief hole. When the equipment stops, the oil in the pump oil channel can flow back to the oil storage chamber through the oil gap, without needing or needing to go through the gear gap for backflow pressure relief, thereby ensuring that the pipeline depressurizes at the normal speed when the equipment stops. Attached Figure Description

[0015] Figure 1 This is a front view of the electric gear lubrication pump of the present invention.

[0016] Figure 2 This is a perspective view of the electric gear lubrication pump of the present invention.

[0017] Figure 3 This is a perspective view of the electric gear lubrication pump of the present invention after it has been separated from the second mounting base.

[0018] Figure 4 yes Figure 3 The diagram shows a three-dimensional view of the electric gear pump at another angle.

[0019] Figure 5 This is a perspective view of the gear pump of the present invention after it has been separated from the first mounting base.

[0020] Figure 6 yes Figure 5 The structure shown is a three-dimensional view when viewed from another angle.

[0021] Figure 7 This is a perspective view of the first mounting base of the present invention.

[0022] Figure 8 This is a right view of the first mounting base of the present invention.

[0023] Figure 9 The first mounting edge of the present invention Figure 8 The sectional view obtained after cutting along line segment AA.

[0024] Figure 10 This is a rear view of the first mounting base of the present invention.

[0025] Figure 11 The first mounting edge of the present invention Figure 10 The sectional view obtained after cutting the middle BB line segment.

[0026] Figure 12 This is a top view of the pump base of the present invention.

[0027] Figure 13 The pump seat edge of the present invention Figure 12 The sectional view obtained after cutting along line CC. Detailed Implementation

[0028] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0029] like Figures 1 to 13 As shown, this invention discloses an electric gear lubrication pump 100, comprising a drive motor 10, a pump base 20, a gear pump 30, and an oil tank 40. The pump base 20 has an oil storage chamber 21, the gear pump 30 is installed in the oil storage chamber 21, the drive motor 10 is installed in the pump base 20, and the gear pump 30 is connected to the output end of the drive motor 10, which drives the gear pump 30 to operate. The oil tank 40 is installed in the pump base 20 and communicates with the oil storage chamber 21. The pump base 20 has an oil pumping channel 22, the oil inlet of the gear pump 30 opens into the oil storage chamber 21, and the oil outlet of the gear pump 30 communicates with the oil pumping channel 22. The pump base 20 has a pressure relief hole 23 that opens into the oil storage chamber 21 and communicates with the oil pumping channel 22. A plug 50 is installed in the pressure relief hole 23, and the plug 50 is installed in a non-tight fit configuration within the pressure relief hole 23 to create an oil passage gap between the hole wall of the pressure relief hole 23 and the plug 50. When the equipment stops, if the oil used meets the requirements, the oil from the outlet of gear pump 30 can flow back to the inlet of gear pump 30 through the gear gap, achieving shutdown and pressure relief. If inferior oil containing talc is used, the talc particles are large and easily clog the gear gap, preventing the oil from flowing back to the inlet of gear pump 30 at the normal speed, thus increasing the pressure relief time.

[0030] In this invention, a pressure relief hole 23 is provided on the pump base 20, which opens into the oil storage chamber 21 and communicates with the pump oil channel 22. A plug 50 is installed in the pressure relief hole 23. When the equipment stops, the oil in the pump oil channel 22 can flow back to the oil storage chamber 21 through the oil gap, without needing or needing to go through the gear gap for backflow pressure relief, thereby ensuring that the pipeline depressurizes at the normal speed when the equipment stops.

[0031] like Figures 1 to 13 As shown, the pump base 20 includes a first mounting base 24 and a second mounting base 25, which are mounted together to enclose an oil storage chamber 21. A drive motor 10 is mounted on the first mounting base 24, and the drive motor 10 and the second mounting base 25 are respectively located on both sides of the first mounting base 24. An oil tank 40 is mounted on the top of the first mounting base 24 and the second mounting base 25. Dividing the pump base 20 into two parts, the first mounting base 24 and the second mounting base 25, facilitates the installation of the gear pump 30.

[0032] like Figures 1 to 13 As shown, the oil pump channel 22 is located within the first mounting base 24. An oil outlet structure 26 protrudes from the first mounting base 24 into the oil storage chamber 21. A portion of the oil pump channel 22 is located within the oil outlet structure 26, and a pressure relief hole 23 is opened in the oil outlet structure 26. The oil outlet structure 26 facilitates the installation of the pressure relief hole 23 and the plug 50.

[0033] like Figures 1 to 13 As shown, the first mounting base 24 also has a mounting body 27 protruding into the oil storage chamber 21, the oil outlet structure 26 is adjacent to the mounting body 27, and the gear pump 30 is mounted on the mounting body 27. The mounting body 27 is provided to facilitate the installation of the gear pump 30.

[0034] like Figures 1 to 13 As shown, a connecting structure 231 is provided inside the pressure relief hole 23, and the plug 50 is installed in the pressure relief hole 23 by connecting to the connecting structure 231. Further, the connecting structure 231 is a tapered threaded structure, and the plug 50 is connected to the connecting structure 231 by a threaded connection. After the tapered threaded structure is connected to the plug 50, an oil passage gap is naturally formed between the plug 50 and the threaded structure.

[0035] Preferably, in the embodiment provided by the present invention, the plug 50 is a columnar structure with threads on its outer surface. Of course, depending on actual needs, the plug 50 can also be a block structure. The sharpened threads refer to the fact that the tip of the thread structure is cut off, but the thread structure is still retained and is still installed in the pressure relief hole 23 by means of threaded connection.

[0036] like Figures 1 to 13As shown, a structural ring 28 protrudes from the first mounting base 24 toward the oil storage chamber 21, and the structural ring 28 encloses a placement space 29, in which the gear pump 30 is installed.

[0037] like Figure 11 As shown, to enhance the safety of the electric gear lubrication pump 100, a pressure relief valve 60 is installed on the pump oil passage 22.

[0038] To facilitate oil discharge, the oil outlet of the oil pump channel 22 is located on the second mounting base 25.

[0039] The following is a brief description of the working process of the electric gear lubrication pump 100 of the present invention: The drive motor 10 drives the gear pump 30 to operate, and the oil in the oil storage chamber 21 is sucked into the oil inlet of the gear pump 30, then pumped to the oil outlet of the gear pump 30, then flows into the pump oil passage 22, and finally flows out. When the equipment stops, the oil remaining in the pump oil passage 22 flows back to the oil storage chamber 21 through the oil passage gap of the pressure relief hole 23, thereby achieving pressure relief.

[0040] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. An electric gear lubrication pump, characterized in that: The device includes a drive motor, a pump base, a gear pump, and an oil tank. The pump base has an oil storage chamber, and the gear pump is installed in the oil storage chamber. The drive motor is installed on the pump base and connected to the output end of the drive motor, which drives the gear pump. The oil tank is installed on the pump base and communicates with the oil storage chamber. The pump base has an oil pumping channel. The oil inlet of the gear pump opens into the oil storage chamber, and the oil outlet of the gear pump communicates with the oil pumping channel. The pump base has a pressure relief hole that opens into the oil storage chamber and communicates with the oil pumping channel. A plug is installed in the pressure relief hole in a non-tight fit configuration, creating an oil passage gap between the hole wall and the plug.

2. The electric gear lubrication pump according to claim 1, characterized in that, The pump base includes a first mounting base and a second mounting base, which are mounted together and enclose the oil storage cavity. The drive motor is mounted on the first mounting base, and the drive motor and the second mounting base are respectively located on both sides of the first mounting base. The oil tank is mounted on the top of the first mounting base and the second mounting base.

3. The electric gear lubrication pump according to claim 2, characterized in that, The oil pump channel is located inside the first mounting base. An oil outlet structure protrudes from the first mounting base into the oil storage cavity. A portion of the oil pump channel is located within the oil outlet structure, and the pressure relief hole is opened in the oil outlet structure.

4. The electric gear lubrication pump according to claim 3, characterized in that, The first mounting base also has a mounting body protruding into the oil storage cavity, the oil outlet structure is adjacent to the mounting body, and the gear pump is mounted on the mounting body.

5. The electric gear lubrication pump according to claim 1, characterized in that, The pressure relief hole is provided with a connecting structure, and the plug is installed in the pressure relief hole by connecting to the connecting structure.

6. The electric gear lubrication pump according to claim 5, characterized in that, The connecting structure is a sharpened threaded structure, and the plug is connected to the connecting structure by a threaded connection.

7. The electric gear lubrication pump according to claim 6, characterized in that, The plug has a columnar or block-shaped structure.

8. The electric gear lubrication pump according to claim 2, characterized in that, A structural ring protrudes from the first mounting base into the oil storage cavity, and the structural ring encloses a placement space, in which the gear pump is located.

9. The electric gear lubrication pump according to claim 1, characterized in that, A pressure relief valve is installed on the oil pump passage.

10. The electric gear lubrication pump according to claim 2, characterized in that, The oil outlet of the pump oil passage is located on the second mounting base.

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