Accurate flow control device for high-pressure oil pump

Abstract

The utility model relates to the technical field of high-pressure oil pumps, and discloses a high-pressure oil pump flow accurate control device which comprises a high-pressure oil pump body. Oil pressure in the high-pressure oil pump body is accurately controlled through the oil pressure control device, when the oil pressure control device needs to be installed, the rotating column is rotated to rotatably collect the pull rope, the pull rope pulls the limiting plate into the fixing frame through the guide wheel, the spring is extruded, and the oil pressure control device is installed. Then, a fixing frame and the oil pressure control device are inserted into the high-pressure oil pump body, a sealing plate makes contact with a sealing frame, the overall sealing performance is guaranteed, a limiting plate is bounced into a limiting groove through an extrusion spring, and it is guaranteed that the oil pressure control device is fixed; the first buffer pad and the second buffer pad on the inlet valve and the outlet valve are used for buffering the inlet valve and the outlet valve so as to guarantee the sealing performance, the oil pressure control device is used for controlling, the oil pressure control device is quickly disassembled and assembled, and then the sealing performance of the inlet valve and the outlet valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure oil pumps, in particular to a high-pressure oil pump flow precision control device. Background Art

[0002] The fuel injection pump, also known as the high-pressure fuel pump, is the most important component in the fuel system. The function of the fuel pump is to increase the fuel pressure and spray a certain amount of fuel into the combustion chamber at the right time according to the requirements of the diesel engine working conditions.

[0003] After searching, the utility model patent announcement number is CN 214789135 U. The utility model discloses a valve for a high-pressure oil pump, which specifically relates to the field of valve technology, including a shell and an electromagnetic head. The shell is provided with a junction box, an oil inlet, an oil outlet and a flow meter interface. A control valve is provided in the shell. The control valve includes a valve body, a first drive rod, a sealing shaft and a second drive rod. The first drive rod and the second drive rod are fixedly connected at both ends of the sealing shaft. A first sealing ring 5 is provided on the sealing shaft. A valve cavity for accommodating the sealing shaft is provided in the valve body. An oil inlet and an oil outlet are provided on the valve body. The shell is fixedly connected to the valve body, and the electromagnetic head is connected to the first drive rod. The utility model has a simple structure, is easy to install, and has good sealing performance.

[0004] Existing high-pressure fuel pumps cannot precisely control fuel injection during use, resulting in poor fuel economy. Utility Model Content

[0005] The utility model aims to provide a high-pressure oil pump flow precision control device, which solves the problem in the background technology that the high-pressure oil pump cannot precisely control the oil injection when in use.

[0006] An embodiment of the present application provides a high-pressure oil pump flow precision control device, including a high-pressure oil pump body, an oil inlet pipe is fixedly connected to the inner left end of the high-pressure oil pump body, an oil outlet pipe is fixedly connected to the inner right end of the high-pressure oil pump body, a sealing frame is fixedly connected to the inner upper end of the high-pressure oil pump body, a limiting groove is provided at the inner upper end of the high-pressure oil pump body, a fixing frame is provided at the inner upper end of the high-pressure oil pump body, an oil pressure control device is fixedly connected to the surface left end of the fixing frame, an inlet valve is provided at the inner right end of the oil inlet pipe, and an outlet valve is provided at the inner left end of the oil outlet pipe.

[0007] By adopting the above technical scheme, the oil pressure control device accurately controls the oil pressure inside the high-pressure oil pump body. When the oil pressure control device needs to be installed, the rotating column is rotated to collect the pull rope, and the pull rope is pulled into the fixed frame through the guide wheel to pull the limit plate. The spring is squeezed, and then the fixed frame and the oil pressure control device are inserted into the high-pressure oil pump body. The sealing plate is in contact with the sealing frame to ensure the overall sealing. When the limit plate moves to the limit groove, the squeezed spring bounces the limit plate into the limit groove to ensure the fixation of the oil pressure control device. The first buffer pad and the second buffer pad on the inlet valve and the outlet valve buffer the inlet valve and the outlet valve to ensure the sealing.

[0008] Optionally, the inner right end of the fixed frame is rotatably connected to a rotating column, the right end of the rotating column is fixedly connected to a pull rope, the rear end of the pull rope is transmission-connected to a guide wheel, the right end of the pull rope is fixedly connected to a limiting plate, the left end of the limiting plate is fixedly connected to a spring, and the front end of the surface of the fixed frame is fixedly connected to a sealing plate.

[0009] By adopting the above technical solution, the fixing frame can be quickly installed and disassembled.

[0010] Optionally, the surface of the rotating column is provided with an anti-slip layer.

[0011] By adopting the above technical solution, the user is prevented from slipping during rotation.

[0012] Optionally, there are four groups of springs, and the four groups of springs surround each other with a distribution center of the fixing frame.

[0013] By adopting the above technical solution, the mobility of parts is guaranteed when they are moved.

[0014] Optionally, a first buffer pad is fixedly connected to the left end of the surface side of the inlet valve.

[0015] By adopting the above technical solution, wear can be avoided when parts come into contact with each other, thereby ensuring sealing.

[0016] Optionally, a second buffer pad is fixedly connected to the right end of the surface side of the outlet valve.

[0017] By adopting the above technical solution, wear can be avoided when parts come into contact with each other, thereby ensuring sealing.

[0018] Optionally, the number of the guide wheels is four.

[0019] By adopting the above technical solution, the movement of the pull rope is guaranteed.

[0020] Optionally, the spring is made of stainless steel.

[0021] By adopting the above technical solution, rust removal caused by long-term use can be avoided.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The technical solution of the present application uses the oil pressure control device to accurately control the oil pressure inside the high-pressure oil pump body. When the oil pressure control device needs to be installed, the rotating column is rotated to collect the pull rope, and the pull rope is pulled into the fixing frame through the guide wheel to limit the plate. The spring is squeezed, and then the fixing frame and the oil pressure control device are inserted into the inside of the high-pressure oil pump body. The sealing plate is in contact with the sealing frame to ensure the overall sealing. When the limit plate moves to the limit groove, the squeezed spring bounces the limit plate into the limit groove to ensure that the oil pressure control device is fixed. The first buffer pad and the second buffer pad on the inlet valve and the outlet valve buffer the inlet valve and the outlet valve to ensure the sealing. The oil pressure control device is controlled to quickly disassemble and install the oil pressure control device to ensure the sealing of the inlet valve and the outlet valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of a high-pressure oil pump flow precision control device of the utility model;

[0026] Figure 2 This is a schematic diagram of the sealing frame structure of a high-pressure oil pump flow precision control device of the utility model;

[0027] Figure 3 This is an enlarged schematic diagram of a limit plate structure of a high-pressure oil pump flow precision control device of the utility model;

[0028] Figure 4 This is a schematic diagram of the oil inlet pipe structure of a high-pressure oil pump flow precision control device of the utility model;

[0029] Figure 5 The utility model is a schematic diagram of the oil outlet pipe structure of a high-pressure oil pump flow precision control device.

[0030] In the figure: 1. High-pressure oil pump body; 2. Fixed frame; 201. Rotating column; 202. Pull rope; 203. Guide wheel; 204. Spring; 205. Limit plate; 206. Sealing plate; 3. Oil inlet pipe; 4. Oil outlet pipe; 5. Sealing frame; 6. Limit groove; 7. Inlet valve; 8. First buffer pad; 9. Outlet valve; 10. Second buffer pad; 11. Oil pressure control device. DETAILED DESCRIPTION

[0031] See also Figure 1-5 The utility model provides a technical solution: a high-pressure oil pump flow precision control device, including a high-pressure oil pump body 1, an oil inlet pipe 3 is fixedly connected to the inner left end of the high-pressure oil pump body 1, an oil outlet pipe 4 is fixedly connected to the inner right end of the high-pressure oil pump body 1, a sealing frame 5 is fixedly connected to the inner upper end of the high-pressure oil pump body 1, a limiting groove 6 is provided at the inner upper end of the high-pressure oil pump body 1, a fixing frame 2 is provided at the inner upper end of the high-pressure oil pump body 1, an oil pressure control device 11 is fixedly connected to the surface left end of the fixing frame 2, an inlet valve 7 is provided at the inner right end of the oil inlet pipe 3, and an outlet valve 9 is provided at the inner left end of the oil outlet pipe 4.

[0032] In the above technical scheme, the oil pressure control device 11 accurately controls the oil pressure inside the high-pressure oil pump body 1. When the oil pressure control device 11 needs to be installed, the rotating column 201 is rotated to collect the pull rope 202. The pull rope 202 is pulled into the fixed frame 2 through the guide wheel 203 to pull the limit plate 205. The spring 204 is squeezed, and then the fixed frame 2 and the oil pressure control device 11 are inserted into the high-pressure oil pump body 1. The sealing plate 206 contacts the sealing frame 5 to ensure the overall sealing. When the limit plate 205 moves to the limit groove 6, the squeezed spring 204 bounces the limit plate 205 into the limit groove 6 to ensure that the oil pressure control device 11 is fixed. The first buffer pad 8 and the second buffer pad 10 on the inlet valve 7 and the outlet valve 9 buffer the inlet valve 7 and the outlet valve 9 to ensure the sealing.

[0033] In the technical solution of the utility model, if Figure 3 and Figure 1 As shown, the inner right end of the fixed frame 2 is rotatably connected to a rotating column 201, the right end of the surface side of the rotating column 201 is fixedly connected to a pull rope 202, the rear end of the surface side of the pull rope 202 is transmission-connected to a guide wheel 203, the right end of the surface side of the pull rope 202 is fixedly connected to a limiting plate 205, the left end of the surface side of the limiting plate 205 is fixedly connected to a spring 204, and the front end of the surface of the fixed frame 2 is fixedly connected to a sealing plate 206 to ensure that the fixed frame 2 can be quickly installed and disassembled.

[0034] In the technical solution of the utility model, if Figure 3 As shown, the surface of the rotating column 201 is provided with an anti-skid layer to prevent the user from slipping when rotating.

[0035] In the technical solution of the utility model, if Figure 3 As shown, there are four groups of springs 204, and the four groups of springs 204 surround each other with the center of the fixed frame 2 to ensure the mobility of the parts when they move.

[0036] In the technical solution of the utility model, if Figure 4As shown, a first buffer pad 8 is fixedly connected to the left end of the surface side of the inlet valve 7 to prevent wear when parts come into contact with each other, thereby ensuring sealing.

[0037] In the technical solution of the utility model, if Figure 5 As shown, a second buffer pad 10 is fixedly connected to the right end of the surface side of the outlet valve 9 to prevent wear when the parts come into contact with each other, thereby ensuring the sealing performance.

[0038] In the technical solution of the utility model, if Figure 3 As shown, there are four sets of guide wheels 203 to ensure the movement of the pull rope 202.

[0039] In the technical solution of the utility model, if Figure 3 As shown, the spring 204 is made of stainless steel to avoid rusting due to long-term use.

[0040] When in use, the oil pressure control device 11 accurately controls the oil pressure inside the high-pressure oil pump body 1. When the oil pressure control device 11 needs to be installed, the rotating column 201 is rotated to collect the pull rope 202. The pull rope 202 pulls the limit plate 205 into the fixed frame 2 through the guide wheel 203. The spring 204 is squeezed, and then the fixed frame 2 and the oil pressure control device 11 are inserted into the high-pressure oil pump body 1. The sealing plate 206 contacts the sealing frame 5 to ensure the overall sealing. When the limit plate 205 moves to the limit groove 6, the squeezed spring 204 bounces the limit plate 205 into the limit groove 6 to ensure that the oil pressure control device 11 is fixed. The first buffer pad 8 and the second buffer pad 10 on the inlet valve 7 and the outlet valve 9 buffer the inlet valve 7 and the outlet valve 9 to ensure the sealing.

Claims

1. A high-pressure oil pump flow precision control device, comprising a high-pressure oil pump body (1), characterized in that: The left end of the interior of the high-pressure oil pump body (1) is fixedly connected to an oil inlet pipe (3), the right end of the interior of the high-pressure oil pump body (1) is fixedly connected to an oil outlet pipe (4), the upper end of the interior of the high-pressure oil pump body (1) is fixedly connected to a sealing frame (5), the upper end of the interior of the high-pressure oil pump body (1) is provided with a limiting groove (6), the upper end of the interior of the high-pressure oil pump body (1) is provided with a fixing frame (2), the left end of the surface side of the fixing frame (2) is fixedly connected to an oil pressure control device (11), the right end of the interior of the oil inlet pipe (3) is provided with an inlet valve (7), and the left end of the interior of the oil outlet pipe (4) is provided with an outlet valve (9).

2. A high-pressure oil pump flow precision control device according to claim 1, characterized in that: The inner right end of the fixed frame (2) is rotatably connected to a rotating column (201), the outer right end of the rotating column (201) is fixedly connected to a pull rope (202), the outer rear end of the pull rope (202) is transmission-connected to a guide wheel (203), the outer right end of the pull rope (202) is fixedly connected to a limiting plate (205), the outer left end of the limiting plate (205) is fixedly connected to a spring (204), and the front end of the surface of the fixed frame (2) is fixedly connected to a sealing plate (206).

3. A high-pressure oil pump flow precision control device according to claim 2, characterized in that: The surface of the rotating column (201) is provided with an anti-slip layer.

4. A high-pressure oil pump flow precision control device according to claim 3, characterized in that: The number of the springs (204) is four groups, and the four groups of springs (204) surround each other with the center of the fixed frame (2).

5. The high-pressure oil pump flow precision control device according to claim 1, characterized in that: A first buffer pad (8) is fixedly connected to the left end of the surface side of the inlet valve (7).

6. The high-pressure oil pump flow precision control device according to claim 1, characterized in that: A second buffer pad (10) is fixedly connected to the right end of the surface side of the outlet valve (9).

7. A high-pressure oil pump flow precision control device according to claim 2, characterized in that: The number of the guide wheels (203) is four.

8. The high-pressure oil pump flow precision control device according to claim 4, characterized in that: The spring (204) is made of stainless steel.

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