Inspection device for fuel injector

Abstract

The utility model discloses an oil sprayer inspection device which comprises an oil storage tank, a high-pressure pump is fixedly installed on the top of the oil storage tank, a spraying tank located on one side of the high-pressure pump is fixedly installed on the top of the oil storage tank, a fixing base is integrally connected to the top of the spraying tank, and an observation window is arranged on the front face of the spraying tank. The top of the spraying box is rotationally connected with a threaded rod located on one side of the fixing base, a fixing hole penetrating into the spraying box is formed in the middle of the fixing base, inserting grooves located in the two sides of the fixing hole are formed in the top of the fixing base, and an oil sprayer body is inserted into the fixing hole in a penetrating mode. The threaded rod is connected with a lifting frame in a penetrating and threaded mode, inserting columns are integrally connected to the bottoms of the two ends of the lifting frame, and a rotary knob is fixedly installed at the top of the threaded rod. The high-pressure pump pumps oil from the oil storage tank to the oil injector body, the state of the oil injector body is observed through the observation window, and the inspection efficiency of the oil injector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injectors, in particular to a fuel injector inspection device. Background Art

[0002] A diesel engine's fuel injector is a device that sprays high-pressure fuel into the engine's combustion chamber. Based on the engine's requirements, diesel fuel from a high-pressure pump is injected into a specific location in the combustion chamber at a specific injection pressure, spray fineness, and pattern, where it mixes with air and burns.

[0003] During the operation of a diesel engine, everything from the high-pressure fuel pump to the fuel injector is in a high-pressure working environment. Coupled with the influence of factors such as usage time, fuel quality, and the filtering effect of the oil filter, the spray holes of the fuel injector are very likely to wear or clog, which directly affects the power, economy, reliability and service life of the diesel engine. Therefore, in order to ensure the normal operation of the diesel engine, it is crucial to inspect the fuel injector.

[0004] To this end, we propose an injector inspection device. Utility Model Content

[0005] The purpose of the present utility model is to provide a fuel injector inspection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: an injector inspection device comprises an oil storage tank, a high-pressure pump is fixedly installed on the top of the oil storage tank, a spray box located on one side of the high-pressure pump is fixedly installed on the top of the oil storage tank, the top of the spray box is integrally connected with a fixing seat, the front of the spray box is provided with an observation window, the top of the spray box is rotatably connected to a threaded rod located on one side of the fixing seat, the middle part of the fixing seat is provided with a fixing hole that penetrates into the interior of the spray box, the top of the fixing seat is provided with a plug-in slot located on both sides of the fixing hole, the inside of the fixing hole is inserted through the injector body, the threaded rod is threadedly connected to a lifting frame, the bottom of the two ends of the lifting frame is integrally connected with a plug-in column, the top of the threaded rod is fixedly installed with a knob, the liquid inlet of the high-pressure pump is fixedly installed with a liquid extraction pipe, the other end of the liquid extraction pipe is fixedly installed with one side of the oil storage tank, the liquid outlet of the high-pressure pump is fixedly installed with a delivery pipe, and the other end of the delivery pipe is fixedly installed with a quick connector fixed to the injector body.

[0007] Optionally, a connecting pipe is integrally connected to the bottom of the spray box, the connecting pipe is arranged to penetrate the top of the oil storage tank, and the bottom of the connecting pipe is lower than the top inside the oil storage tank.

[0008] Optionally, the other end of the liquid extraction pipe is fixedly mounted to the bottom of one side of the oil storage tank, and a filter is fixedly mounted on the other end of the liquid extraction pipe, and the bottom of the filter is fixedly mounted to the bottom inside the oil storage tank.

[0009] Optionally, the plug-in post is located directly above the plug-in slot, the length of the plug-in post is equal to the depth of the plug-in slot, and the diameter of the plug-in post is the same as the inner diameter of the plug-in slot.

[0010] Optionally, the two plug-in slots are symmetrically arranged on both sides of the fixing hole, and the height of the top of the threaded rod is greater than the height of the top of the injector body.

[0011] Optionally, transparent tempered glass is fixedly installed inside the observation window.

[0012] Optionally, the delivery pipe is a high-pressure hose, and a pressure gauge is provided at the connection between the delivery pipe and the quick connector.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The fuel injector inspection device is equipped with a spray box. The fuel injector body to be inspected is inserted into the fixing hole. After stabilizing the lifting frame, the knob is turned to rotate the threaded rod, thereby driving the lifting frame to move downward. The plug-in column is inserted into the fixing hole of the fuel injector body and connected with the plug-in slot. The fuel injector body is fixed to the fixing seat. The quick connector is installed with the fuel inlet of the fuel injector body. The high-pressure pump draws fuel from the fuel tank to the fuel injector body. The status of the fuel injector body is then observed through the observation window, thereby improving the inspection efficiency of the fuel injector.

[0015] 2. The fuel injector inspection device is provided with a connecting pipe. The fuel sprayed into the spray box through the injector body is gathered at the bottom of the spray box and then flows back to the inside of the fuel storage tank through the connecting pipe, thereby reducing the loss of fuel during the inspection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a fuel injector inspection device of the present utility model;

[0017] Figure 2 This is a structural schematic diagram of an oil storage tank of an injector inspection device of the utility model;

[0018] Figure 3 This is a structural schematic diagram of a spray box of a fuel injector inspection device of the utility model;

[0019] Figure 4 The utility model is a structural schematic diagram of a fixing seat of a fuel injector inspection device.

[0020] In the figure: 1. Oil storage tank; 2. High-pressure pump; 3. Spray box; 4. Observation window; 5. Fixing seat; 6. Fixing hole; 7. Plug-in slot; 8. Threaded rod; 9. Lifting frame; 10. Plug-in column; 11. Knob; 12. Connecting pipe; 13. Liquid extraction pipe; 14. Delivery pipe; 15. Quick connector; 16. Filter; 17. Injector body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 4 The utility model provides a fuel injector inspection device, including a fuel tank 1, a high-pressure pump 2 is fixedly installed on the top of the fuel tank 1, a spray box 3 located on one side of the high-pressure pump 2 is fixedly installed on the top of the fuel tank 1, a fixing seat 5 is integrally connected to the top of the spray box 3, an observation window 4 is provided on the front of the spray box 3, a threaded rod 8 located on one side of the fixing seat 5 is rotatably connected to the top of the spray box 3, a fixing hole 6 is provided in the middle of the fixing seat 5, and plug-in grooves 7 are provided on both sides of the fixing hole 6. The inside of the fixing hole 6 is penetrated and plugged with a fuel injector body 17, the threaded rod 8 is threadedly connected to a lifting frame 9, and the bottom of the two ends of the lifting frame 9 are integrally connected with a plug-in column 10, a knob 11 is fixedly installed on the top of the threaded rod 8, and a liquid extraction pipe is fixedly installed at the liquid inlet of the high-pressure pump 2 13. The other end of the liquid extraction pipe 13 is fixedly installed on one side of the oil storage tank 1, and the liquid outlet of the high-pressure pump 2 is fixedly installed with a delivery pipe 14. The other end of the delivery pipe 14 is fixedly installed with a quick connector 15 fixedly installed with the injector body 17. By setting the spray box 3, the injector body 17 to be inspected is inserted into the fixing hole 6. After stabilizing the lifting frame 9, turn the knob 11 to rotate the threaded rod 8, thereby driving the lifting frame 9 to move downward, and insert the connecting column 10 through the fixing hole 6 of the injector body 17 and the connecting groove 7, and fix the injector body 17 on the fixing seat 5. Install the quick connector 15 and the oil inlet of the injector body 17. The high-pressure pump 2 draws oil from the oil storage tank 1 to the injector body 17, and then observes the status of the injector body 17 through the observation window 4, thereby improving the inspection efficiency of the injector.

[0023] The bottom of the spray box 3 is integrally connected with a connecting pipe 12, which is arranged to penetrate the top of the oil storage tank 1. The bottom of the connecting pipe 12 is lower than the top of the inside of the oil storage tank 1. The other end of the liquid extraction pipe 13 is fixedly installed with the bottom of one side of the oil storage tank 1. The other end of the liquid extraction pipe 13 is fixedly installed with a filter screen 16. The bottom of the filter screen 16 is fixedly installed with the bottom of the inside of the oil storage tank 1. The plug-in column 10 is located just above the plug-in slot 7. The length of the plug-in column 10 is equal to the depth of the plug-in slot 7. The diameter of the plug-in column 10 is equal to the inner diameter of the plug-in slot 7. The diameters are the same, the two plug-in slots 7 are symmetrically arranged on both sides of the fixing hole 6, the height of the top of the threaded rod 8 is greater than the height of the top of the injector body 17, the interior of the observation window 4 is fixedly installed with transparent tempered glass, the delivery pipe 14 is a high-pressure hose, and a pressure gauge is provided at the connection between the delivery pipe 14 and the quick connector 15. By providing a connecting pipe 12, the oil sprayed into the inside of the spray box 3 through the injector body 17 is gathered at the bottom of the spray box 3, and then flows back to the inside of the oil storage tank 1 through the connecting pipe 12, reducing the loss of oil during the inspection process.

[0024] Working principle:

[0025] Insert the injector body 17 to be inspected into the fixing hole 6, hold the lifting frame 9 steady, turn the knob 11 to rotate the threaded rod 8, and then drive the lifting frame 9 to move downward, pass the plug-in column 10 through the fixing hole 6 of the injector body 17 and plug it into the plug-in slot 7, fix the injector body 17 on the fixing seat 5, install the quick connector 15 and the oil inlet of the injector body 17, the high-pressure pump 2 draws oil from the fuel storage tank 1 to the injector body 17, and then observe the status of the injector body 17 through the observation window 4, thereby improving the inspection efficiency of the injector, and the oil sprayed into the spray box 3 through the injector body 17 gathers at the bottom of the spray box 3, and then flows back to the inside of the fuel storage tank 1 through the connecting pipe 12, thereby reducing the loss of oil during the inspection process.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuel injector inspection device, comprising a fuel tank (1), characterized in that: A high-pressure pump (2) is fixedly mounted on the top of the oil storage tank (1), a spray box (3) located on one side of the high-pressure pump (2) is fixedly mounted on the top of the oil storage tank (1), a fixing seat (5) is integrally connected to the top of the spray box (3), an observation window (4) is provided on the front of the spray box (3), a threaded rod (8) located on one side of the fixing seat (5) is rotatably connected to the top of the spray box (3), a fixing hole (6) penetrating into the interior of the spray box (3) is provided in the middle of the fixing seat (5), a plug-in slot (7) is provided on both sides of the fixing hole (6), and the fixing hole (6) is provided on the top of the fixing seat (5). The inside of the oil pump (1) is inserted through the injector body (17), the threaded rod (8) is threadedly connected to the lifting frame (9), the bottoms of both ends of the lifting frame (9) are integrally connected with the plug-in column (10), the top of the threaded rod (8) is fixedly installed with a knob (11), the liquid inlet of the high-pressure pump (2) is fixedly installed with a liquid extraction pipe (13), the other end of the liquid extraction pipe (13) is fixedly installed with one side of the oil storage tank (1), the liquid outlet of the high-pressure pump (2) is fixedly installed with a delivery pipe (14), and the other end of the delivery pipe (14) is fixedly installed with a quick connector (15) fixedly installed with the injector body (17).

2. The fuel injector inspection device according to claim 1, characterized in that: The bottom of the spray box (3) is integrally connected with a connecting pipe (12), the connecting pipe (12) and the top of the oil storage tank (1) are arranged to penetrate, and the bottom of the connecting pipe (12) is lower than the top of the inside of the oil storage tank (1).

3. The fuel injector inspection device according to claim 1, characterized in that: The other end of the liquid extraction pipe (13) is fixedly mounted to the bottom of one side of the oil storage tank (1), and a filter screen (16) is fixedly mounted to the other end of the liquid extraction pipe (13), and the bottom of the filter screen (16) is fixedly mounted to the bottom inside the oil storage tank (1).

4. The fuel injector inspection device according to claim 1, characterized in that: The plug-in column (10) is located directly above the plug-in slot (7), the length of the plug-in column (10) is equal to the depth of the plug-in slot (7), and the diameter of the plug-in column (10) is the same as the inner diameter of the plug-in slot (7).

5. The fuel injector inspection device according to claim 4, characterized in that: The two plug-in slots (7) are symmetrically arranged on both sides of the fixing hole (6), and the height of the top of the threaded rod (8) is greater than the height of the top of the injector body (17).

6. The fuel injector inspection device according to claim 1, characterized in that: Transparent tempered glass is fixedly installed inside the observation window (4).

7. The fuel injector inspection device according to claim 1, characterized in that: The delivery pipe (14) is a high-pressure hose, and a pressure gauge is provided at the connection between the delivery pipe (14) and the quick connector (15).

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