Diesel injector inspection device

Abstract

The utility model discloses a diesel injector inspection device, which comprises a base, a three-way pipe, an injector, an oil drum, an oil pump and a pressure gauge, the three-way pipe is fixedly arranged on the base, a first connecting port of the three-way pipe is connected with a connecting end of the injector through a first pipeline, a nozzle of the injector extends into the oil drum, and a second connecting port of the three-way pipe is connected with the oil drum through a second pipeline. The bottom of the side face of the oil barrel is connected with an oil suction port of the oil pump through a second pipeline, an oil outlet of the oil pump is connected with a second connecting port of the three-way pipe through a third pipeline, and the pressure gauge is arranged at the position of a third connecting port of the three-way pipe. The method has the advantage of being beneficial to improving the inspection accuracy.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engine maintenance, in particular to a diesel engine injector inspection device. Background Art

[0002] The diesel engine injector inspection device is a tool specially used to test and calibrate the performance of diesel engine injectors. It can help technicians evaluate the key performance indicators of the injector, such as injection volume, injection pattern, response time, leakage, etc. It is an indispensable tool in engine repair and maintenance.

[0003] Conventional diesel engine injector inspection device disclosed in application number CN201920715546.3 includes an injector, an injector pipe, a pressure gauge, a fuel tank, and a handle. The pressure relief valve and the lower end of the pressure gauge are respectively fixedly connected to one end of a four-way pipe, and the two ends of the stop valve are respectively connected to the upper end of the hydraulic plunger and one end of the four-way pipe at the lower end of the pressure gauge. Although the device has a simple and compact structure and a wide range of applications, it can meet the requirements of the injection pressure, atomization effect, and oil stop leak-free performance of the injector. However, the oil pressure depends on the manual operation of the technician by pressing the handle, which is affected by the technician's energy, attention, skills and other factors. It is difficult to ensure the accuracy and consistency of the operation, which affects the accuracy of the inspection results. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a diesel engine injector inspection device, which is beneficial to improving the inspection accuracy.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a diesel engine injector inspection device, including a base, a tee, an injector, an oil barrel, an oil pump and a pressure gauge, the tee is fixedly arranged on the base, the first connecting port of the tee is connected to the connecting end of the injector through a first pipeline, the nozzle of the injector extends into the oil barrel, the bottom of the side of the oil barrel is connected to the oil suction port of the oil pump through a second pipeline, the oil outlet of the oil pump is connected to the second connecting port of the tee through a third pipeline, and the pressure gauge is arranged at the third connecting port of the tee.

[0006] Preferably, the three-way pipe includes a main pipe and a branch pipe, the main pipe is fixedly arranged on the base and extends laterally, two ends of the main pipe are the first connecting port and the second connecting port respectively, the lower end of the branch pipe is connected to the middle part of the main pipe, and the upper end of the branch pipe is the third connecting port.

[0007] Preferably, a mounting frame is provided at the upper end of the oil barrel, and a clamp is provided on the mounting frame, and the clamp is used to clamp the injector.

[0008] Preferably, the clamp includes an upper plate and a lower plate distributed from top to bottom, one side of the upper plate and one side of the lower plate are respectively connected to the mounting frame, a first through hole is arranged on the upper plate, a screw hole and a locking bolt connected to the first through hole are arranged on the other side of the upper plate, the locking bolt passes through the screw hole and extends into the first through hole, a second through hole is arranged on the lower plate, and the second through hole is coaxially arranged with the first through hole.

[0009] Preferably, a base plate is fixedly provided at the lower end of the mounting frame, and a ring-shaped groove, a center hole and a plurality of air holes are provided on the lower end surface of the base plate. The upper edge of the oil drum is inserted into the ring-shaped groove, and the center hole is coaxially arranged with the oil drum. The nozzle of the injector passes through the center hole and extends into the oil drum, and the air holes are located in the area between the center hole and the ring-shaped groove.

[0010] Preferably, a first control valve is provided on the first pipeline, a second control valve is provided on the second pipeline, and a third control valve is provided on the third pipeline.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] 1. By using an oil pump to provide power and control the oil pressure, compared with manual operation, the operation is simple, the accuracy is high, the consistency is good, and it is conducive to improving the accuracy of the inspection;

[0013] 2. The oil pump can provide stable output power. After confirming that the pressure gauge reaches the specified value, the technicians can focus on observing the injection of the injector. There is no need to repeatedly confirm the changes in the pressure gauge, which helps the technicians make accurate judgments.

[0014] 3. The oil barrel, oil pump, three-way pipe and fuel injector are connected in sequence. The oil in the oil barrel passes through the oil pump and the three-way pipe, is sprayed out from the fuel injector and is injected into the oil barrel again, thereby achieving the purpose of recycling the oil and helping to control costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the three-way pipe in the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the oil barrel of the utility model;

[0018] Figure 4 It is a partial structural schematic diagram of the utility model.

[0019] In the figure: 1. base; 2. tee pipe; 21. main pipe; 211. first connection port; 212. second connection port; 22. branch pipe; 221. third connection port; 23. mounting hole; 3. injector; 41. oil drum; 42. oil pump; 5. pressure gauge; 61. first pipeline; 62. second pipeline; 63. third pipeline; 64. first control valve; 65. second control valve; 66. third control valve; 7. mounting frame; 71. bottom plate; 711. annular groove; 712. center hole; 713. air vent; 8. fixture; 81. upper plate; 811. first through hole; 812. screw hole; 813. locking bolt; 82. lower plate; 821. second through hole; 10. thermometer. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] Embodiment 1: Figure 1 and Figure 2 As shown, a diesel engine fuel injector inspection device includes a base 1, a tee pipe 2, a fuel injector 3, an oil barrel 41, an oil pump 42 and a pressure gauge 5. The tee pipe 2 is fixedly arranged on the base 1. The first connection port 211 of the tee pipe 2 is connected to the connection end of the fuel injector 3 through the first pipeline 61. The nozzle of the fuel injector 3 extends into the fuel barrel 41. The bottom of the side of the fuel barrel 41 is connected to the oil suction port of the oil pump 42 through the second pipeline 62. The oil outlet of the oil pump 42 is connected to the second connection port 212 of the tee pipe 2 through the third pipeline 63. The pressure gauge 5 is arranged at the third connection port 221 of the tee pipe 2. Among them, the oil barrel 41 is made of transparent material, or a transparent observation window is arranged on the side of the oil barrel 41, so that the technicians can observe the fuel injection of the fuel injector 3.

[0023] In this embodiment, the three-way pipe 2 includes a main pipe 21 and a branch pipe 22. The main pipe 21 is fixedly arranged on the base 1 and extends laterally. The two ends of the main pipe 21 are respectively a first connection port 211 and a second connection port 212. The lower end of the branch pipe 22 is connected to the middle part of the main pipe 21, and the upper end of the branch pipe 22 is a third connection port 221.

[0024] In this embodiment, a first control valve 64 is provided on the first pipeline 61, a second control valve 65 is provided on the second pipeline 62, and a third control valve 66 is provided on the third pipeline 63. By providing multiple control valves to control the on-off state of each pipeline, the flexibility is better.

[0025] Embodiment 2: Figure 3 and Figure 4 As shown, the rest of the parts are the same as those of the first embodiment, except that a mounting frame 7 is provided at the upper end of the oil barrel 41 , and a clamp 8 is provided on the mounting frame 7 , and the clamp 8 is used to clamp the injector 3 .

[0026] In this embodiment, the clamp 8 includes an upper plate 81 and a lower plate 82 distributed from top to bottom, one side of the upper plate 81 and one side of the lower plate 82 are respectively connected to the mounting frame 7, a first through hole 811 is provided on the upper plate 81, a screw hole 812 and a locking bolt 813 connected to the first through hole 811 are provided on the other side of the upper plate 81, the locking bolt 813 passes through the screw hole 812 and then extends into the first through hole 811, and a second through hole 821 is provided on the lower plate 82, and the second through hole 821 is coaxially arranged with the first through hole 811. Furthermore, the inner wall of the first through hole 811 and the inner wall of the second through hole 821 are both provided with a rubber layer (not shown in the figure), which can play a buffering and anti-slip role, and help improve the stability of the clamping.

[0027] In this embodiment, a bottom plate 71 is fixedly provided at the lower end of the mounting frame 7, and an annular groove 711, a center hole 712 and a plurality of air holes 713 are provided on the lower end surface of the bottom plate 71. The upper edge of the oil barrel 41 is inserted into the annular groove 711, and the center hole 712 is coaxially arranged with the oil barrel 41. The nozzle of the injector 3 passes through the center hole 712 and then extends into the oil barrel 41. The air holes 713 are located in the area between the center hole 712 and the annular groove 711. Among them, the bottom plate 71 can prevent most of the oil from splashing out of the oil barrel 41, and the safety is good.

[0028] During installation, the lower end of the injector 3 passes through the first through hole 811, the second through hole 821, and the center hole 712 in sequence and then extends into the oil barrel 41. The locking bolt 813 is rotated to abut against the side of the injector 3 to achieve locking.

[0029] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A diesel engine injector inspection device, characterized in that The invention comprises a base (1), a three-way pipe (2), an injector (3), an oil barrel (41), an oil pump (42) and a pressure gauge (5); the three-way pipe (2) is fixedly arranged on the base (1); a first connection port (211) of the three-way pipe (2) is connected to a connection end of the injector (3) through a first pipeline (61); a nozzle of the injector (3) extends into the oil barrel (41); a bottom of a side of the oil barrel (41) is connected to an oil suction port of the oil pump (42) through a second pipeline (62); an oil outlet of the oil pump (42) is connected to a second connection port (212) of the three-way pipe (2) through a third pipeline (63); and the pressure gauge (5) is arranged at a third connection port (221) of the three-way pipe (2).

2. A diesel engine injector inspection device according to claim 1, characterized in that The three-way pipe (2) comprises a main pipe (21) and a branch pipe (22); the main pipe (21) is fixedly arranged on the base (1) and extends in the transverse direction; the two ends of the main pipe (21) are respectively the first connection port (211) and the second connection port (212); the lower end of the branch pipe (22) is connected to the middle part of the main pipe (21); and the upper end of the branch pipe (22) is the third connection port (221).

3. A diesel engine injector inspection device according to claim 1, characterized in that A mounting frame (7) is arranged at the upper end of the oil barrel (41), and a clamp (8) is arranged on the mounting frame (7), and the clamp (8) is used to clamp the fuel injector (3).

4. A diesel engine injector inspection device according to claim 3, characterized in that The clamp (8) includes an upper plate (81) and a lower plate (82) distributed from top to bottom, one side of the upper plate (81) and one side of the lower plate (82) are respectively connected to the mounting frame (7), a first through hole (811) is provided on the upper plate (81), and a screw hole (812) and a locking bolt (813) connected to the first through hole (811) are provided on the other side of the upper plate (81), and the locking bolt (813) passes through the screw hole (812) and then extends into the first through hole (811), and a second through hole (821) is provided on the lower plate (82), and the second through hole (821) is coaxially arranged with the first through hole (811).

5. A diesel engine injector inspection device according to claim 3, characterized in that A bottom plate (71) is fixedly arranged at the lower end of the mounting frame (7), and a lower end surface of the bottom plate (71) is provided with an annular groove (711), a center hole (712) and a plurality of air holes (713). The upper edge of the oil barrel (41) is inserted into the annular groove (711), and the center hole (712) is coaxially arranged with the oil barrel (41). The nozzle of the fuel injector (3) passes through the center hole (712) and then extends into the oil barrel (41), and the air holes (713) are located in the area between the center hole (712) and the annular groove (711).

6. A diesel engine injector inspection device according to claim 1, characterized in that The first pipeline (61) is provided with a first control valve (64), the second pipeline (62) is provided with a second control valve (65), and the third pipeline (63) is provided with a third control valve (66).

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