CN218895938U - Pressure stabilizing valve detection device for small fuel pump - Google Patents
Pressure stabilizing valve detection device for small fuel pump Download PDFInfo
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- CN218895938U CN218895938U CN202320173357.4U CN202320173357U CN218895938U CN 218895938 U CN218895938 U CN 218895938U CN 202320173357 U CN202320173357 U CN 202320173357U CN 218895938 U CN218895938 U CN 218895938U
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Abstract
The utility model relates to the technical field of pressure-stabilizing valve detection, in particular to a pressure-stabilizing valve detection device for a small fuel pump; the oil tank is used for filling oil, the oil tank cover plate is a sealed oil tank, when the oil tank is used, the oil pump is started, the pressure of the pressure valve is regulated, a workpiece to be measured is mounted on the workpiece mounting seat, the workpiece to be measured is connected with the workpiece pressure head, the oil inlet switch ball valve is opened, oil in the oil tank is pumped out through the oil pump, the input rated flow flows into the workpiece to be measured through the oil inlet measuring hole, the oil pressure cavity and the oil outlet pipe, flows out from the oil drain port of the pressure stabilizing valve to the opening of the workpiece mounting seat and flows back to the oil tank, the oil drain switch ball valve is opened, the fuel with specific flow flows back to the oil tank after passing through the oil drain measuring hole and the oil drain pipe, and then the oil drain switch ball valve is closed first, so that the recovery characteristic of the workpiece to be measured can be retested; and continuously closing the oil inlet switch ball valve, so as to finish a test cycle, and finally loosening the workpiece to be tested.
Description
Technical Field
The utility model relates to the technical field of pressure stabilizing valve detection, in particular to a pressure stabilizing valve detection device for a small fuel pump.
Background
In the field of small internal combustion engines, more and more fuel supply systems begin to adopt an electronic injection fuel control system to replace old carburettors, and theories and practices prove that the electronic injection fuel control system has remarkable energy saving and emission reduction effects, and electronic injection systems are also vigorously developed.
The main scheme of the current electric injection fuel oil control fuel supply system is that excessive fuel oil is supplied to a fuel oil passage rail (a stable pressure area, short for a fuel rail) by a high-power motor oil pump, and the pressure of the fuel rail is kept stable by a pressure relief and pressure stabilization valve, so that the fuel injection quantity of an electromagnetic valve type fuel injector can be accurately controlled by an ECU. In mass production, the consistency of the pressure stabilizing valve determines the consistency of the oil supply system, and in small internal combustion electronic injection systems, the small pressure stabilizing valve manufactured by a spring system is integrated in a fuel pump assembly. Because of the poor accuracy of the spring system itself, each of the trim valves in a batch process needs to be tested and calibrated. This places demands on the stability, reliability, accuracy and rapidity of the detection device.
The existing detection device adopts a constant flow regulating valve mode to input flow according to the definition of technical indexes, and has certain defects although the accuracy is higher: most constant-current regulating valves have limited precision, the precision is usually within +/-5%, the precision of a pressure stabilizing valve required by an electronic injection system is required to be within +/-2%, so that the reliability of detection results is low, especially when a plurality of detection stations are used for detection, dispersion is very high, the constant-current regulating valves are usually made of rubber diaphragms, are generally aged fast, the error is aggravated, the stabilizing time of the constant-current regulating valves is long, the operation time of batch detection is prolonged, the cost of the high-precision low-flow constant-current valves is very high, the batch detection cost is increased, an oil injector is used for controlling the outflow quantity of oil injection, and the oil injector is used as a component with high complexity and brings a large amount of errors.
Disclosure of Invention
The utility model aims to provide a small-sized pressure stabilizing valve detection device for a fuel pump, and aims to solve the problems of reducing the complexity of the detection device, improving the replicability of the device, and prolonging the service life of the device due to the automatic operation capability.
In order to achieve the above purpose, the utility model provides a pressure stabilizing valve detection device for a small-sized fuel pump, which comprises a fuel tank, a fuel tank cover plate, a workpiece mounting seat, a workpiece to be detected, a fuel pump, a pressure regulating valve, an oil inlet measuring hole, an oil drain measuring hole, an oil pressure cavity, a pressure sensor, an oil inlet switch ball valve, an oil drain switch ball valve, a bracket, an oil drain pipe, an oil inlet pipe, a workpiece pressing head, an oil outlet pipe, an oil pump oil outlet pipe and a pressure gauge;
the oil tank is characterized in that the support is fixedly connected with the oil tank cover plate and is positioned at the top of the oil tank cover plate, the workpiece mounting seat penetrates through the support and is mounted on the support, a workpiece to be detected is arranged on the workpiece mounting seat, the workpiece pressing head is in sliding connection with the workpiece to be detected, the oil pressure cavity is fixedly mounted on the support, the workpiece pressing head is connected with the oil pressure cavity through the oil outlet pipe, the oil inlet measuring hole and the oil outlet measuring hole are respectively formed in two ends of the oil pressure cavity, the oil outlet switch ball valve is arranged on one side of the oil outlet measuring hole, the oil inlet switch is arranged on one side of the oil inlet measuring hole, the pressure gauge is arranged on the oil pressure cavity and is communicated with the pressure regulating valve through the oil inlet pipe, the oil tank cover plate is communicated with the oil outlet switch ball valve through the oil outlet pipe, and the oil pump is communicated with the pressure regulating valve through the oil outlet pipe.
The device further comprises a sealing ring, wherein the sealing ring is arranged between the oil inlet switch ball valve and the oil inlet measuring hole, and the sealing ring is further arranged between the oil drain switch ball valve and the oil drain measuring hole.
The device further comprises an oil collecting disc and an oil drain pipe fixing hole, wherein the oil collecting disc is fixedly connected with the oil tank cover plate and is positioned on the outer side of the workpiece mounting seat, and the oil drain pipe fixing hole is formed in the oil collecting disc.
The device further comprises an air cylinder, wherein the air cylinder is fixedly connected with the support and is positioned on one side of the support, the output end of the air cylinder is fixedly connected with the workpiece pressing head, and an operating handle is arranged on the air cylinder.
The pressure regulating valve further comprises a pressure regulating valve handle and a pressure regulating valve monitoring meter, wherein the pressure regulating valve handle is arranged on the pressure regulating valve, and the pressure regulating valve monitoring meter is arranged on the pressure regulating valve.
According to the pressure stabilizing valve detection device for the small fuel pump, the fuel tank is used for filling fuel, the fuel tank cover plate is a sealed fuel tank, when the pressure stabilizing valve detection device is used, the fuel pump is started, the pressure of the pressure valve is regulated, a workpiece to be detected is installed on the workpiece installation seat, the workpiece pressure head is connected with the workpiece to be detected, the oil inlet switch ball valve is opened, oil in the fuel tank is pumped out through the fuel pump, the input rated flow flows into the workpiece to be detected through the oil inlet measuring hole, the oil pressure cavity and the oil outlet pipe, flows out of the oil outlet of the pressure stabilizing valve to the workpiece installation seat to open and flow back to the fuel tank, the oil drain switch ball valve is opened again, the fuel with specific flow flows back to the fuel tank after passing through the oil drain measuring hole and the oil drain pipe, and then the oil drain switch ball valve is closed, and the recovery characteristic of the workpiece to be detected can be retested; and the oil inlet switch ball valve is continuously closed, so that a test cycle is completed, and finally the workpiece to be tested is loosened, thereby solving the problems of reducing the complexity of the detection device, improving the replicability of the device and prolonging the service life of the device due to the automatic operation capability.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a structural view of a pressure stabilizing valve detecting device for a small-sized fuel pump according to a first embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional view of a pressure stabilizing valve detecting apparatus for a small-sized fuel pump according to a first embodiment of the present utility model.
The oil collecting device comprises a workpiece to be tested, a 2 oil tank, a 3 support, a 4 oil collecting disc, a 5 workpiece mounting seat 5, a 6 workpiece compacting head, a 7 air cylinder, a 7-1 operating handle, an 8 oil tank cover plate, a 9 oil pump, a 10 oil pump oil outlet pipe, an 11 pressure regulating valve, an 11-1 pressure regulating valve handle, an 11-2 pressure regulating valve monitoring meter, a 12 oil inlet pipe, a 13 oil inlet switch ball valve, a 14 oil pressure cavity, a 15 pressure meter, a 16 oil outlet pipe, a 17 oil outlet switch ball valve, a 18 oil outlet pipe, a 19 oil outlet pipe fixing hole, a 20 oil inlet measuring hole, a 20-1 sealing ring, a 21 oil outlet measuring hole and a 22 oil pressure cavity.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
Referring to fig. 1 to 2, fig. 1 is a block diagram showing a pressure stabilizing valve detecting apparatus for a small fuel pump according to a first embodiment of the present utility model. Fig. 2 is a schematic cross-sectional view of a pressure stabilizing valve detecting apparatus for a small-sized fuel pump according to a first embodiment of the present utility model.
The utility model provides a pressure stabilizing valve detection device for a small-sized fuel pump, which comprises: the device comprises a workpiece 1 to be tested, an oil tank 2, a bracket 3, an oil collecting disc, a workpiece mounting seat 5, a workpiece pressing head 6, an air cylinder 7, an operating handle 7-1, an oil tank cover plate 8, an oil pump 9, an oil outlet pipe of the oil pump 9, a pressure regulating valve 11, a pressure regulating valve handle 11-1, a pressure regulating valve monitoring table 11-2, an oil inlet pipe 12, an oil inlet switch ball valve 13, an oil pressure cavity 14, a pressure gauge 15, an oil outlet pipe, an oil drain switch ball valve 17, an oil drain pipe 18, an oil drain pipe fixing hole 19, an oil inlet measuring hole 20, a sealing ring 20-1, an oil drain measuring hole 21 and an oil pressure cavity 22. The problems of reducing the complexity of the detection device, improving the replicability of the device and prolonging the service life of the device due to the adoption of the scheme are solved.
In this embodiment, the oil tank 2 is used for filling oil, and the oil tank cover 8 seals the oil tank 2.
Wherein the bracket 3 is fixedly connected with the oil tank cover plate 8 and is positioned at the top of the oil tank cover plate 8, the workpiece mounting seat 5 penetrates through the bracket 3 and is mounted on the bracket 3, the workpiece 1 to be tested is arranged on the workpiece mounting seat 5, the workpiece pressing head 6 is in sliding connection with the workpiece 1 to be tested, the oil pressure cavity 14 is fixedly mounted on the bracket 3, the oil pressure cavity 14 is provided with an oil pressure cavity 22, the workpiece pressing head 6 and the oil pressure cavity 14 are connected through the oil outlet pipe 16, the oil pressure cavity 14 is respectively provided with an oil inlet measuring hole 20 and an oil outlet measuring hole 21 at two ends, the oil outlet switch ball valve 17 is arranged on one side of the oil outlet measuring hole 21, the oil inlet switch ball valve 13 is arranged on one side of the oil inlet measuring hole 20, the pressure gauge 15 is arranged on the oil pressure cavity 14, the oil inlet switch ball valve 13 is communicated with the pressure regulating valve 11 through the oil inlet pipe 12, the oil tank cover plate 8 is communicated with the oil drain switch ball valve 17 through the oil drain pipe 18, the oil pump 9 is communicated with the pressure regulating valve 11 through the oil outlet pipe of the oil pump 9, when the oil pump 9 is used, the pressure of the pressure valve is regulated, a workpiece 1 to be tested is mounted on the workpiece mounting seat 5, the workpiece pressure head is connected with the workpiece 1 to be tested, the oil inlet switch ball valve 13 is opened, oil in the oil tank 2 is pumped through the oil pump 9, the input rated flow flows into the workpiece 1 through the oil inlet measuring hole 20, the oil pressure cavity 22 and the oil outlet pipe 16, and flows out from the pressure stabilizing valve oil drain port to the workpiece mounting seat 5 to open and flow back to the oil tank 2, the oil drain switch ball valve 17 is opened, and the specific flow of the fuel passes through the oil drain hole 21, the oil outlet valve 13 is opened, the oil drain pipe 18 flows back to the oil tank 2, and then the oil drain switch ball valve 17 is closed first, so that the recovery characteristic of the workpiece 1 to be measured can be retested; and the oil inlet switch ball valve 13 is continuously closed, so that a test cycle is completed, and finally the workpiece 1 to be tested is loosened, thereby solving the problems of reducing the complexity of a detection device, improving the replicability of the device and prolonging the service life of the device due to the automatic operation capability.
Secondly, the sealing ring 20-1 is arranged between the oil inlet switch ball valve 13 and the oil inlet measuring hole 20, the sealing ring 20-1 is also arranged between the oil drain switch ball valve 17 and the oil drain measuring hole 21, and the sealing ring 20-1 is used for sealing the connection part of the oil inlet switch ball valve 13 and the oil inlet measuring hole 20 and the connection part of the oil drain switch ball valve 17 and the oil drain measuring hole 21.
And the oil collecting disc is fixedly connected with the oil tank cover plate 8 and is positioned at the outer side of the workpiece mounting seat 5, an oil drain pipe fixing hole 19 is formed in the oil collecting disc, the oil collecting disc is used for preventing fuel oil from overflowing in the testing process, and the oil drain pipe 18 is fixed.
In addition, the air cylinder 7 is fixedly connected with the bracket 3 and is positioned at one side of the bracket 3, the output end of the air cylinder 7 is fixedly connected with the workpiece pressing head 6, the air cylinder 7 is provided with an operating handle 7-1,
finally, the pressure regulating valve 11 further comprises a pressure regulating valve handle 11-1 and a pressure regulating valve monitoring table 11-2, wherein the pressure regulating valve handle 11-1 is arranged on the pressure regulating valve 11, the pressure regulating valve monitoring table 11-2 is arranged on the pressure regulating valve 11, the pressure regulating valve handle 11-1 is used for controlling the pressure regulating valve 11, and the pressure regulating valve monitoring table 11-2 is used for monitoring the pressure regulating valve 11.
When the small-sized pressure stabilizing valve detection device for the fuel pump is used, the fuel tank 2 is used for filling fuel, the fuel tank cover plate 8 is used for sealing the fuel tank 2, the fuel pump 9 is started when the small-sized pressure stabilizing valve detection device is used, the pressure of the pressure valve is regulated, a workpiece 1 to be detected is installed on the workpiece installation seat 5, the workpiece pressure head is connected with the workpiece 1 to be detected, the fuel inlet switch ball valve 13 is opened, the fuel in the fuel tank 2 is pumped out through the fuel pump 9, the input rated flow flows into the workpiece 1 to be detected through the fuel inlet measuring hole 20, the fuel pressure cavity 22 and the fuel outlet pipe 16, flows out from a pressure stabilizing valve fuel outlet to the workpiece installation seat 5 to open and flow back to the fuel tank 2, the fuel drain switch ball valve 17 is opened, the fuel with specific flow flows back to the fuel tank 2 after passing through the fuel drain measuring hole 21 and the fuel drain pipe 18, and then the fuel drain switch ball valve 17 is closed, and the recovery characteristic of the workpiece 1 to be detected can be retested; and the oil inlet switch ball valve 13 is continuously closed, so that a test cycle is completed, and finally the workpiece 1 to be tested is loosened, thereby solving the problems of reducing the complexity of a detection device, improving the replicability of the device and prolonging the service life of the device due to the automatic operation capability.
The foregoing disclosure is merely illustrative of a preferred embodiment of a device for detecting a pressure stabilizing valve for a small fuel pump, and it is to be understood that the scope of the utility model is not limited thereto, and that all or part of the procedures for implementing the embodiments described above may be performed by those skilled in the art, and equivalent changes may be made thereto, which are encompassed by the present utility model.
Claims (5)
1. A pressure stabilizing valve detection device for a small-sized fuel pump comprises a fuel tank and a fuel tank cover plate, and is characterized in that,
the device also comprises a workpiece mounting seat, a workpiece to be tested, an oil pump, a pressure regulating valve, an oil inlet measuring hole, an oil drain measuring hole, an oil pressure cavity, a pressure sensor, an oil inlet switch ball valve, an oil drain switch ball valve, a bracket, an oil drain pipe, an oil inlet pipe, a workpiece pressing head, an oil outlet pipe, an oil pump oil outlet pipe and a pressure gauge;
the oil tank is characterized in that the support is fixedly connected with the oil tank cover plate and is positioned at the top of the oil tank cover plate, the workpiece mounting seat penetrates through the support and is mounted on the support, a workpiece to be detected is arranged on the workpiece mounting seat, the workpiece pressing head is in sliding connection with the workpiece to be detected, the oil pressure cavity is fixedly mounted on the support and is provided with an oil pressure cavity, the workpiece pressing head is connected with the oil pressure cavity through the oil outlet pipe, oil inlet measuring holes and oil outlet measuring holes are respectively formed in two ends of the oil pressure cavity, the oil outlet switch ball valve is arranged on one side of the oil outlet measuring holes, the oil inlet switch ball valve is arranged on one side of the oil inlet measuring holes, the pressure gauge is arranged on the oil pressure cavity and is communicated with the pressure regulating valve through the oil inlet switch ball valve, the oil tank cover plate is communicated with the oil outlet switch ball valve through the oil outlet pipe, and the oil pump is communicated with the pressure regulating valve through the oil outlet pipe.
2. A pressure stabilizing valve detecting apparatus for a small-sized fuel pump according to claim 1, wherein,
the device also comprises a sealing ring, wherein the sealing ring is arranged between the oil inlet switch ball valve and the oil inlet measuring hole, and the sealing ring is also arranged between the oil drain switch ball valve and the oil drain measuring hole.
3. A pressure stabilizing valve detecting apparatus for a small-sized fuel pump according to claim 2, wherein,
the device also comprises an oil collecting disc and an oil drain pipe fixing hole, wherein the oil collecting disc is fixedly connected with the oil tank cover plate and is positioned on the outer side of the workpiece mounting seat, and the oil collecting disc is provided with the oil drain pipe fixing hole.
4. A pressure stabilizing valve detecting apparatus for a small fuel pump according to claim 3, wherein,
the device also comprises a cylinder, wherein the cylinder is fixedly connected with the support and is positioned on one side of the support, the output end of the cylinder is fixedly connected with the workpiece pressing head, and an operating handle is arranged on the cylinder.
5. A pressure stabilizing valve detecting apparatus for a small fuel pump as set forth in claim 4, wherein,
the pressure regulating valve further comprises a pressure regulating valve handle and a pressure regulating valve monitoring meter, wherein the pressure regulating valve handle is arranged on the pressure regulating valve, and the pressure regulating valve monitoring meter is arranged on the pressure regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320173357.4U CN218895938U (en) | 2023-02-07 | 2023-02-07 | Pressure stabilizing valve detection device for small fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320173357.4U CN218895938U (en) | 2023-02-07 | 2023-02-07 | Pressure stabilizing valve detection device for small fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218895938U true CN218895938U (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320173357.4U Active CN218895938U (en) | 2023-02-07 | 2023-02-07 | Pressure stabilizing valve detection device for small fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218895938U (en) |
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2023
- 2023-02-07 CN CN202320173357.4U patent/CN218895938U/en active Active
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