Gas tightness detection equipment for one-way valve of oil nozzle

Abstract

The utility model provides oil nozzle one-way valve airtightness detection equipment, which comprises a support frame, a sealing mechanism and a pressurizing mechanism, a partition plate is arranged in the middle of the top end of the support frame, the sealing mechanism is arranged on the front sides of the support frame and the partition plate, and the pressurizing mechanism is arranged on the rear sides of the support frame and the partition plate. The sealing mechanism comprises a supporting plate, a sealing gasket, connecting plates, T-shaped rails, a partition plate, hydraulic push rod extrusion plates and a mounting plate, the connecting plates are fixedly connected to the two sides of the top end of the supporting frame, the T-shaped rails are formed in the connecting plates, extrusion plates are slidably connected into the T-shaped rails, and hydraulic push rods are fixedly connected between the extrusion plates; and the front end of the supporting frame is slidably connected with a supporting plate, the top end of the supporting plate is fixedly connected with a sealing gasket, the outer wall of the connector is fixedly provided with installation heads of different sizes through threads, oil nozzle one-way valves of various specifications can be conveniently and rapidly matched, the application range of equipment is greatly expanded, and the practicability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to a fuel injector check valve, specifically a fuel injector check valve airtightness testing device. Background Technology

[0002] Fuel injectors are key components of a car engine's fuel injection system, and their performance directly affects the engine's power, fuel economy, and emissions. The one-way valve of the fuel injector, as a crucial component controlling the unidirectional flow of fuel, is extremely important for its airtightness. Poor airtightness of the one-way valve can lead to fuel leakage, which in turn affects the normal injection pattern of the fuel injectors, causing problems such as difficulty starting the engine, unstable idling, increased fuel consumption, and excessive exhaust emissions.

[0003] Traditional fuel injector check valve airtightness testing equipment has several shortcomings. For example, its simple sealing structure makes it difficult to adapt to the testing requirements of different sized fuel injector check valves, resulting in low testing efficiency and accuracy. Some equipment lacks effective filtration measures for gas handling, allowing impurities to easily enter the fuel injector check valve, affecting test results and potentially damaging the valve. Furthermore, traditional equipment typically only tests specific specifications of fuel injector check valves, lacking versatility and requiring frequent equipment replacements or complex modifications to meet the testing requirements of different products. Therefore, an improved fuel injector check valve airtightness testing equipment is needed to solve these problems. Utility Model Content

[0004] In view of this, the present invention provides a device for testing the air tightness of a fuel injector check valve, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: a fuel injector one-way valve air tightness testing device, including a support frame, a sealing mechanism and a pressurizing mechanism, characterized in that: a partition is provided at the top center of the support frame, a sealing mechanism is provided on the front side of the support frame and the partition, and a pressurizing mechanism is provided on the rear side of the support frame and the partition.

[0006] The sealing mechanism includes a support plate, a sealing gasket, a connecting plate, a T-shaped track, a partition, a hydraulic push rod, a pressing plate, and a mounting plate. The top two sides of the support frame are fixedly connected to the connecting plates. The connecting plates have a T-shaped track inside. The pressing plates are slidably connected inside the T-shaped track. A hydraulic push rod is fixedly connected between the pressing plates. The front end of the support frame is slidably connected to the support plate. The top of the support plate is fixedly connected to the sealing gasket.

[0007] The pressurization mechanism includes an air compressor, a gas filter, a pressure regulating valve, a gas pipe, a filter element connector, and a mounting head. The air compressor is fixedly connected to the rear end of the support frame. The gas filter is connected through the output end of the air compressor, and the pressure regulating valve is connected through the output end of the gas filter.

[0008] More preferably, one end of the pressure regulating valve is connected to an air pipe, one end of the air pipe is connected to a baffle plate, one end of the air pipe is connected to a compression plate, and is connected to a connector.

[0009] More preferably, the bottom end of the extrusion plate is slidably connected to a mounting plate, and the bottom end of the mounting plate is connected through a connector.

[0010] More preferably, the gas filter has a plurality of filter elements inside.

[0011] More preferably, the outer wall of the connector is fixedly fitted with mounting heads of different sizes by threads.

[0012] This utility model embodiment, due to the adoption of the above technical solution, has the following advantages: In this utility model

[0013] 1. The outer wall of the connector is fixed with mounting heads of different sizes by threads, which can be easily and quickly adapted to one-way valves of various specifications of fuel injectors, greatly expanding the application range of the equipment and improving its practicality.

[0014] Second, a gas filter is installed in the pressurization mechanism, and several filter elements are installed inside it. This can effectively filter impurities in the compressed air, prevent impurities from entering the fuel injector check valve and affecting the test results, improve the accuracy of the test, and at the same time protect the fuel injector check valve from damage by impurities.

[0015] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural diagram of the present utility model;

[0018] Figure 2 This is another structural view of the entire utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the integral gas filter of this utility model;

[0020] Figure 4 This is a schematic diagram of the entire utility model from another angle.

[0021] Reference numerals: 1. Support frame; 2. Sealing mechanism; 21. Support plate; 22. Sealing gasket; 23. Connecting plate; 24. T-shaped rail; 25. Partition plate; 26. Hydraulic push rod; 27. Extrusion plate; 28. Mounting plate; 3. Pressurizing mechanism; 31. Air compressor; 32. Gas filter; 33. Pressure regulating valve; 34. Air pipe; 35. Filter element; 36. Connector; 37. Mounting head. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] Example

[0025] like Figures 1-4 As shown, this utility model embodiment provides a fuel injector check valve air tightness testing device, including a support frame 1, a sealing mechanism 2 and a pressurizing mechanism 3. The device is characterized in that: a partition 25 is provided at the top center of the support frame 1, a sealing mechanism 2 is provided on the front side of the support frame 1 and the partition 25, and a pressurizing mechanism 3 is provided on the rear side of the support frame 1 and the partition 25.

[0026] The sealing mechanism 2 includes a support plate 21, a sealing gasket 22, a connecting plate 23, a T-shaped rail 24, a partition 25, a hydraulic push rod 26, a pressing plate 27, and a mounting plate 28. The top two sides of the support frame 1 are fixedly connected to the connecting plates 23. A T-shaped rail 24 is provided inside the connecting plates 23, and a pressing plate 27 is slidably connected inside the T-shaped rail 24. A hydraulic push rod 26 is fixedly connected between the pressing plates 27. The front end of the support frame 1 is slidably connected to the support plate 21, and a sealing gasket 22 is fixedly connected to the top of the support plate 21. The fuel injector check valve to be tested is placed on the support plate 21. A suitable mounting head 3 is selected according to the size of the fuel injector check valve. 7. The support plate 21 is fixed to the outer wall of the connector 36 by threads, ensuring that the support plate 21 is in a suitable position at the front end of the support frame 1, the hydraulic push rod 26 is in the initial state, and the air compressor 31, gas filter 32, pressure regulating valve 33 and other equipment are correctly connected and can work normally. Start the hydraulic push rod 26, and the hydraulic push rod 26 pushes the two extrusion plates 27 to slide towards each other in the T-shaped track, thereby driving the mounting plate 28 and the mounting head 37 installed on the connector 36 to move closer to the fuel injector check valve until the mounting head 37 is tightly connected to the fuel injector check valve. At the same time, the sealing gasket 22 at the top of the support plate 21 forms a seal with the area around the fuel injector check valve, completing the sealing preparation.

[0027] The pressurization mechanism 3 includes an air compressor 31, a gas filter 32, a pressure regulating valve 33, an air pipe 34, a filter element 35, a connector 36, and a mounting head 37. The air compressor 31 is fixedly connected to the rear end of the support frame 1. The output end of the air compressor 31 is connected to the gas filter 32, and the output end of the gas filter 32 is connected to the pressure regulating valve 33. When the air compressor 31 is turned on, the gas output by the air compressor 31 passes through the gas filter 32 in sequence to remove impurities before entering the pressure regulating valve 33. By adjusting the pressure regulating valve 33, the pressure value required for detection is set. The air pipe 34 and the extrusion plate 27 are detachable. The adjusted gas passes through the air pipe 34, through the partition 25, into the extrusion plate 27, and then through the connector 36 into the one-way valve of the fuel injector. Observe whether there is any gas leakage around the one-way valve of the fuel injector.

[0028] In one embodiment, specifically, one end of the pressure regulating valve 33 is connected to an air pipe 34, one end of the air pipe 34 is connected to a partition 25, one end of the air pipe 34 is connected to a compression plate 27, and is connected to a connector 36.

[0029] In one embodiment, specifically, the bottom end of the extrusion plate 27 is slidably connected to the mounting plate 28, and the bottom end of the mounting plate 28 is connected through to the connector 36.

[0030] In one embodiment, specifically, the gas filter 32 has a plurality of filter elements 35 disposed inside.

[0031] In one embodiment, specifically, the outer wall of the connector 36 is threadedly fixed with mounting heads 37 of different sizes.

[0032] In operation, the present invention works as follows: The fuel injector check valve to be tested is placed on the support plate 21. Based on the size of the fuel injector check valve, a suitable mounting head 37 is selected and fixed to the outer wall of the connector 36 via threads. This ensures that the support plate 21 is positioned appropriately at the front end of the support frame 1. The hydraulic push rod 26 is in its initial state. The air compressor 31, gas filter 32, pressure regulating valve 33, and other equipment are correctly connected and functioning normally. The hydraulic push rod 26 is activated, pushing the two extrusion plates 27 to slide towards each other within the T-shaped track. This, in turn, causes the mounting plate 28 and the mounting head 37 mounted on the connector 36 to move closer to the fuel injector check valve until the mounting head 37 is tightly connected to the fuel injector check valve. Simultaneously, the sealing gasket 22 at the top of the support plate 21 is connected to the fuel injector check valve. Once a seal is formed around the gas, completing the sealing preparation, the air compressor 31 is turned on. The gas output from the air compressor 31 passes through the gas filter 32 to remove impurities before entering the pressure regulating valve 33. By adjusting the pressure regulating valve 33, the required pressure value for testing is set. The air pipe 34 and the extrusion plate 27 are detachable. The adjusted gas passes through the air pipe 34, through the partition 25, into the extrusion plate 27, and through the connector 36 into the fuel injector check valve. Observe whether there is any gas leakage around the fuel injector check valve to determine whether its airtightness is qualified. After the test is completed, first turn off the air compressor 31, then retract the hydraulic push rod 26 to separate the extrusion plate 27 and the mounting head 37 from the fuel injector check valve. Remove the tested fuel injector check valve to complete one test process.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An oil nozzle check valve air tightness detection device, comprising a support frame (1), a sealing mechanism (2) and a pressurizing mechanism (3), characterized in that: The top middle of the support frame (1) is provided with a partition (25), the front side of the support frame (1) and the partition (25) is provided with a sealing mechanism (2), and the rear side of the support frame (1) and the partition (25) is provided with a pressurizing mechanism (3); The sealing mechanism (2) comprises a support plate (21), a sealing gasket (22), a connecting plate (23), a T-shaped track (24), a partition (25), a hydraulic push rod (26), an extrusion plate (27) and a mounting plate (28), both sides of the top end of the support frame (1) are fixedly connected with the connecting plate (23), the inside of the connecting plate (23) is provided with the T-shaped track (24), the inside of the T-shaped track (24) is slidably connected with the extrusion plate (27), the hydraulic push rod (26) is fixedly connected between the extrusion plate (27) and the extrusion plate (27), and the front end of the support frame (1) is slidably connected with the support plate (21); the top end of the support plate (21) is fixedly connected with the sealing gasket (22); The pressurizing mechanism (3) comprises an air compressor (31), a gas filter (32), a pressure regulating valve (33), an air pipe (34), a filter element (35), a connecting head (36) and a mounting head (37), the rear end of the support frame (1) is fixedly connected with the air compressor (31), the output end of the air compressor (31) is throughly connected with the gas filter (32), and the output end of the gas filter (32) is throughly connected with the pressure regulating valve (33).

2. The oil nozzle one-way valve air tightness detection equipment according to claim 1, characterized in that: One end of the pressure regulating valve (33) is throughly connected with the air pipe (34), one end of the air pipe (34) is throughly connected with the partition (25), one end of the air pipe (34) is throughly connected with the extrusion plate (27), and the air pipe (34) is throughly connected with the connecting head (36).

3. The apparatus of claim 1, wherein: The bottom end of the extrusion plate (27) is slidably connected with the mounting plate (28), and the bottom end of the mounting plate (28) is throughly connected with the connecting head (36).

4. The apparatus of claim 1, wherein: The inside of the gas filter (32) is provided with a plurality of filter elements (35).

5. The apparatus of claim 1, wherein: Different mounting heads (37) are fixedly installed on the outer wall of the connecting head (36) in size through threads.

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