A portable high-pressure grease injection machine

Abstract

This utility model relates to the field of grease injection machine technology, and more particularly to a portable high-pressure grease injection machine. It includes a housing with a handle, an oil pump installed inside, a battery slot corresponding to the oil pump, and a rechargeable battery installed in the battery slot. An oil nozzle is connected to the oil pump's outlet, and the nozzle is connected to one end of an oil end flange. The other end of the oil end flange is connected to a grease injection cylinder. The oil end flange has an oil passage connecting the spray nozzle to the grease injection cylinder. A piston is installed inside the grease injection cylinder, with a Glyd ring sealing the middle of the piston and the cylinder, and plug seals sealing both ends of the piston and the cylinder. A grease end nut is connected to the end of the grease injection cylinder extending to the outside of the housing, and the grease end nut has a threaded hole in its center. Integrating the oil pump and grease injection cylinder into the housing results in a small size, light weight, and easy portability. The rechargeable battery can meet the needs of outdoor scenarios without power. The hydraulic oil applied by the oil pump can reach a pressure of 70-120 MPa, resulting in high grease injection efficiency.

Description

Technical fields:

[0001] This utility model relates to the field of grease injection machine technology, and in particular to a portable high-pressure grease injection machine. Background technology:

[0002] Currently, during the routine maintenance of plug valves in oil equipment, it is often necessary to add grease to the plug valves. This is usually done manually using a mechanical lever-type grease injector. This operation is time-consuming and labor-intensive, with low pressure and low grease injection efficiency. Moreover, most oil equipment is located in the field, making it inconvenient to carry the grease injector and its related accessories. Furthermore, there is often no power supply in the field, making it difficult to use an electric pressure pump to electrically pressurize the grease injector. This makes the routine maintenance of plug valves difficult, and there is currently no good solution to these problems.

[0003] In summary, the aforementioned problems encountered during the use of pressure bar grease injection machines have become urgent technical challenges that need to be addressed within the industry. Utility Model Content:

[0004] To overcome the shortcomings of the prior art, this utility model provides a portable high-pressure grease injection machine, which solves the problems of the previous pressure bar type grease injection machine being inconvenient to carry, time-consuming and laborious to operate, and having low grease injection efficiency.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A portable high-pressure grease injector includes a housing with a handle. An oil pump is installed inside the housing, and a circuit board is mounted on the oil pump. A battery slot, containing a rechargeable battery, is located on the housing corresponding to the oil pump. A push-button switch for controlling the oil pump's pressurization and depressurization is also provided on the housing. An oil nozzle is connected to the oil pump's outlet, and one end of the nozzle is connected to an oil end flange. The other end of the oil end flange is connected to a grease injection cylinder. The nozzle has an oil spray channel and an oil spray hole. O-rings are provided on both sides of the oil spray hole between the nozzle and the oil end flange for sealing. An oil passage connecting the oil spray hole and the grease injection cylinder is provided inside the oil end flange. A piston is located inside the grease injection cylinder, and a Glyd ring is used to seal the middle of the piston and the cylinder. Plug seals are used at both ends of the piston and the cylinder for sealing. A grease end nut is connected to the end of the grease injection cylinder extending to the outside of the housing, and the grease end nut has a threaded hole at its center.

[0007] The oil pump's filler port is located on the outside of the tank.

[0008] The housing is equipped with a pressure relief button connected to the oil pump.

[0009] The oil pump is equipped with a pressure sensor, which is connected to a circuit board. The housing is equipped with a pressure display screen that is connected to the circuit board.

[0010] The box is equipped with indicator lights.

[0011] The O-rings, Glyd rings, and Pan-Seals are all equipped with reinforcing retaining rings.

[0012] The circuit board is connected to the remote control.

[0013] A vent plug is installed at the position of the oil end flange corresponding to the oil passage.

[0014] The outer surface of the grease injection cylinder is fitted with a rubber buffer pad.

[0015] The grease injection cylinder is equipped with a welding flange near the grease end nut, and the welding flange has anti-slip texture.

[0016] The present invention adopts the above solution and has the following advantages:

[0017] By integrating the oil pump and grease injection cylinder into the housing, it is small in size, lightweight, and easy to carry. The rechargeable battery in the battery compartment on the housing can power the oil pump, meeting the needs of field scenarios without power. When the oil pump is working, the hydraulic oil in the pump can be sprayed out through the spray channel and spray hole of the nozzle, then enter the oil passage of the oil end flange, and finally enter the grease injection cylinder, pushing the piston to move. The piston then pushes the lubricating grease in the grease injection cylinder outward, and injects it into the stopcock valve through the pipeline. The pressure applied by the hydraulic oil of the oil pump can reach 70-120 MPa, with high grease injection efficiency, reducing the maintenance difficulty of the stopcock valve in the oil equipment and improving work efficiency. Attached image description:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional schematic diagram of the internal structure of this utility model.

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram.

[0022] In the diagram: 1. Housing; 2. Handle; 3. Oil pump; 4. Circuit board; 5. Battery slot; 6. Rechargeable battery; 7. Push-button switch; 8. Oil nozzle; 9. Oil end flange; 10. Grease injection cylinder; 11. Oil injection channel; 12. Oil injection hole; 13. O-ring; 14. Oil passage; 15. Piston; 16. Glyd ring; 17. Pan-sealed seal; 18. Grease end nut; 19. Threaded hole; 20. Pressure relief button; 21. Pressure display screen; 22. Indicator light; 23. Reinforcing retaining ring; 24. Vent plug; 25. Rubber buffer pad; 26. Welded flange. Detailed implementation method:

[0023] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0024] like Figure 1-4 As shown, a portable high-pressure grease injector includes a housing 1 with a handle 2 for easy carrying. An oil pump 3 is installed inside the housing 1, and a circuit board 4 is mounted on the oil pump 3. A battery slot 5 is located on the housing 1 corresponding to the position of the oil pump 3, and a rechargeable battery 6 is installed in the battery slot 5. Multiple rechargeable batteries 6 can be configured for alternating use. A push-button switch 7 is provided on the housing 1 to control the pressurization and depressurization of the oil pump 3. An oil nozzle 8 is connected to the oil outlet of the oil pump 3. The oil nozzle 8 is connected to one end of an oil end flange 9, and the other end of the oil end flange 9 is connected to a grease injection cylinder 10. The oil nozzle 8 has an oil spray channel 11 and a spray nozzle... O-rings 13 are provided on both sides of the oil injection hole 12 for sealing between the oil nozzle 8 and the oil end flange 9. The oil end flange 9 has an oil passage 14 that connects the oil injection hole 12 and the grease injection cylinder 10. The grease injection cylinder 10 has a piston 15. A Glyd ring 16 is provided between the middle of the piston 15 and the grease injection cylinder 10 for sealing. Both ends of the piston 15 are provided with plug seals 17 for sealing between them and the grease injection cylinder 10. The end of the grease injection cylinder 10 extends to the outside of the housing 1 and is connected to a grease end nut 18. The center of the grease end nut 18 has a threaded hole 19, and a high-pressure hose can be connected to the threaded hole 19.

[0025] The oil pump 3 has its filler port located on the outside of the housing 1, which facilitates the injection of hydraulic oil into the oil pump 3.

[0026] The housing 1 is equipped with a pressure relief button 20 connected to the oil pump 3, which can be used to relieve pressure on the hydraulic oil of the oil pump 3.

[0027] The oil pump 3 is equipped with a pressure sensor that can detect the pressure of the oil pump 3. The pressure sensor is connected to the circuit board 4. The housing 1 is equipped with a pressure display screen 21 connected to the circuit board 4, which can display the pressure value.

[0028] The housing 1 is equipped with an indicator light 22, which can be lit up to indicate when the machine is in operation.

[0029] The O-ring 13, Glyd ring 16, and Pan-sealed seal 17 are all equipped with reinforcing retaining rings 23, which serve to strengthen the seal, enhance pressure resistance, and improve sealing performance, thus meeting the high pressure requirements of 70-120 MPa.

[0030] The circuit board 4 is connected to a remote control, enabling wireless remote control.

[0031] The oil end flange 9 is equipped with a vent plug 24 at the position corresponding to the oil passage 14. When using it for the first time, the vent plug 24 needs to be opened to remove the internal air so that the hydraulic oil can fill the entire oil passage 14.

[0032] The outer surface of the grease injection cylinder 10 is fitted with a rubber buffer pad 25, which serves as a shock absorber.

[0033] The grease injection cylinder 10 is provided with a welding flange 26 near the grease end nut 18. The welding flange 26 is provided with anti-slip texture. When tightening the grease end nut 18, the welding flange 26 is fixed by a tool to facilitate applying force to the grease end nut 18.

[0034] Working principle:

[0035] In use, open the grease end nut 18, fill the grease injection cylinder 10 with grease, and then tighten the grease end nut 18. Connect one end of the high-pressure hose to the threaded hole 19 of the grease end nut 18, and the other end to the grease nipple of the stopcock valve. Then operate the button switch 7 to make the oil pump 3 work to pressurize. The hydraulic oil of the oil pump 3 is sprayed out through the oil injection channel 11 and oil injection hole 12 of the nozzle 8, and then enters the oil passage 14 of the oil end flange 9, and finally enters the grease injection cylinder 10, pushing the piston 15 to move. The piston 15 then pushes the grease in the grease injection cylinder 10 outward and injects it into the stopcock valve through the high-pressure hose. After the grease injection is completed, remove the high-pressure hose from the grease end nut 18, and then operate the button switch 7 to make the oil pump 3 work to depressurize. After the depressurization is completed, use the reset rod to pass through the threaded hole 19 of the grease end nut 18 and extend it into the grease injection cylinder 10 to push the piston 15 back to its original position for the next use.

[0036] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0037] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A portable high pressure grease injector machine characterized by: The device includes a housing with a handle. An oil pump is installed inside the housing, and the oil pump has a circuit board. A battery slot corresponding to the oil pump is located on the housing, housing a rechargeable battery. A push-button switch controls the oil pump's pressurization and depressurization. An oil nozzle is connected to the oil pump's outlet, and the nozzle is connected to one end of an oil end flange. The other end of the oil end flange is connected to a grease injection cylinder. The nozzle has an oil spray channel and an oil spray hole. O-rings are installed on both sides of the oil spray hole between the nozzle and the oil end flange for sealing. The oil end flange has an oil passage connecting the oil spray hole and the grease injection cylinder. A piston is installed inside the grease injection cylinder. A Glyd ring is installed between the piston's center and the grease injection cylinder for sealing. Plug seals are installed at both ends of the piston and the grease injection cylinder for sealing. The end of the grease injection cylinder extends to the outside of the housing and is connected to a grease end nut with a threaded hole at its center.

2. The portable high-pressure grease injector of claim 1, wherein: The oil pump's filler port is located on the outside of the tank.

3. The portable high pressure grease injector of claim 1, wherein: The housing is equipped with a pressure relief button connected to the oil pump.

4. The portable high pressure grease injector of claim 1, wherein: The oil pump is equipped with a pressure sensor, which is connected to a circuit board. The housing is equipped with a pressure display screen that is connected to the circuit board.

5. The portable high pressure grease injector of claim 1, wherein: The box is equipped with indicator lights.

6. The portable high pressure grease injector of claim 1, wherein: The O-rings, Glyd rings, and Pan-Seals are all equipped with reinforcing retaining rings.

7. The portable high pressure grease injector of claim 1, wherein: The circuit board is connected to the remote control.

8. The portable high-pressure grease injector of claim 1, wherein: A vent plug is installed at the position of the oil end flange corresponding to the oil passage.

9. The portable high pressure grease injector of claim 1, wherein: The outer surface of the grease injection cylinder is fitted with a rubber buffer pad.

10. The portable high-pressure grease injector of claim 1, wherein: The grease injection cylinder is equipped with a welding flange near the grease end nut, and the welding flange has anti-slip texture.

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