Nut waxing system of common rail oil sprayer

Abstract

The utility model relates to the technical field of waxing, in particular to a common rail oil sprayer nut waxing system which comprises a liquid storage tank, a waxing tank, a drying device and a material rack, the liquid storage tank is communicated with a circulating pipeline, and a circulating pump is arranged on the circulating pipeline; a liquid supply pipeline and a liquid discharge pipeline are communicated between the liquid storage tank and the waxing tank; the liquid supply pipeline and the liquid discharge pipeline are respectively provided with a liquid supply pump and a liquid discharge pump; the drying device is communicated with the waxing tank through a drying pipeline; a rotary drum and a rotary drum mounting rack are arranged in the waxing tank; and the material frame is fixed on the rotary drum mounting frame. The oil sprayer nut is placed on the material frame, then the material frame is placed in the waxing tank, after liquid immersion, rotary drum spin-drying and drying are conducted, a uniform wax layer can be formed on the surface of the inner wall of the nut, and wax liquid can be recycled for continuous use after waxing is completed. According to the waxing system, through manual loading and unloading, the functions of part immersion, rapid drying and drying are integrated, operation is convenient, and the waxing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wax coating, in particular to a common rail injector nut wax coating system. Background Art

[0002] High-pressure common rail technology is an advanced fuel injection technology. It uses a high-pressure fuel pump to pressurize fuel and deliver it to a common fuel rail (common rail). The electronic control unit (ECU) then precisely controls the injectors to inject fuel at the appropriate time and quantity. This enables precise regulation and control of fuel, contributing to improved engine environmental friendliness. With increasing environmental protection requirements and the need to reduce fuel emissions, the rail pressures to which common rail injector assemblies are subject are also increasing. To ensure the stability and reliability of common rail injectors and prevent oil leaks during operation, wax must be applied to the threaded area inside the injector nut before assembly. After waxing, tighten the nut before assembly.

[0003] In the prior art, liquid wax is generally atomized by a high pressure air compressor through a wax sprayer and then directly sprayed on the nut. The coating surface formed in this way is not uniform and the wax consumption is large. Utility Model Content

[0004] In order to solve the problems of uneven wax coating and high wax liquid consumption in the prior art common rail injector nut wax coating method, the utility model provides a common rail injector nut wax coating system, which has the characteristics of uniform wax coating and wax liquid saving.

[0005] To achieve the above objectives, the following technical solutions are provided:

[0006] A common rail injector nut wax coating system includes a liquid storage tank, a wax coating tank, a drying device and a material rack. The liquid storage tank is connected to a circulation pipeline, and the circulation pipeline is provided with a circulation pump; a liquid supply pipeline and a liquid discharge pipeline are connected between the liquid storage tank and the wax coating tank, and the liquid supply pipeline and the liquid discharge pipeline are respectively provided with a liquid supply pump and a liquid discharge pump; the drying device is connected to the wax coating tank through the drying pipeline; a rotating drum and a rotating drum mounting frame are provided in the wax coating tank; and the material rack is fixed on the rotating drum mounting frame.

[0007] Furthermore, the drying device includes an oven and a fan, the fan is connected to the oven and the wax coating tank, and the oven is connected to the wax coating tank.

[0008] Furthermore, the material rack includes a frame body, a placement plate is provided on the frame body, a first liquid hole is provided on the placement plate, a limit card seat is centrally arranged on the first liquid hole, an opening is provided on one side of the limit card seat, a slide groove is provided on the placement plate on the side opposite to the opening, a clamping device is provided in the slide groove opposite to the opening position of the limit card seat, and also includes a clamping device for driving the clamping device to move toward the opening of the limit card seat.

[0009] Furthermore, the clamping device includes a clamp opposite to the opening position of the limit clamp, and the clamping device includes a guide rod located at the bottom of the placement plate and connected to the clamp, and a guide seat matching the guide rod; an adjustment knob is provided at one end of the guide rod, and the adjustment knob is outside the guide seat and is threadedly connected to the guide rod.

[0010] Furthermore, the clamping device includes a clamp opposite to the opening position of the limiting card seat, and the clamping device includes a guide rod located at the bottom of the placement plate and connected to the clamp, and a telescopic motor connected to the guide rod.

[0011] Furthermore, a filter is provided on the liquid supply pipeline between the liquid supply pump and the wax coating tank.

[0012] Furthermore, a pneumatic valve is provided on the liquid discharge pipe.

[0013] Furthermore, a second liquid passage hole is provided on the placement plate.

[0014] The beneficial effects of this utility model are as follows: 1. By placing the injector nut on a material rack, which is then placed in a wax coating tank, a uniform wax layer can be formed on the inner surface of the nut through immersion, drum drying, and drying. After the wax coating is completed, the wax liquid can be recycled and reused. 2. This wax coating system integrates the functions of part immersion, rapid drying, and drying through manual loading and unloading, making it easy to operate and highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural connection diagram of the common rail injector nut wax coating system of the utility model;

[0016] Figure 2 This is a structural diagram of the middle material rack of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure from another angle;

[0018] Figure 4 It is a schematic diagram of the local structure of the material rack;

[0019] Figure 5 It is a structural diagram of the limit card seat;

[0020] In the figure: 1. Liquid storage tank; 2. Waxing tank; 3. Frame; 4. Circulating pipe; 5. Circulating pump; 6. Liquid supply pipe; 7. Liquid discharge pipe; 8. Liquid supply pump; 9. Liquid discharge pump; 10. Rotating drum; 11. Rotating drum mounting frame; 12. Placement plate; 13. First liquid hole; 14. Limiting seat; 15. Slide; 16. Push rod; 17. Guide rod; 18. Guide seat; 19. Filter; 20. Pneumatic valve; 21. Second liquid hole; 22. Support cone; 23. Adjustment knob; 24. Oven; 25. Fan; 26. Injector nut. DETAILED DESCRIPTION

[0021] The following describes in detail a common rail injector nut wax coating system according to the present invention in conjunction with the embodiments.

[0022] like Figure 1 As shown, a common rail injector nut wax coating system includes a liquid storage tank 1, a wax coating tank 2, a drying device and a material rack. The liquid storage tank 1 is connected to a circulation pipe 4, and a circulation pump 5 is provided on the circulation pipe 4; a liquid supply pipe 6 and a liquid discharge pipe 7 are connected between the liquid storage tank 1 and the wax coating tank 2, and the liquid supply pipe 6 and the liquid discharge pipe 7 are respectively provided with a liquid supply pump 8 and a liquid discharge pump 9; the drying device is connected to the wax coating tank 2 through a drying pipe; a rotating drum 10 and a rotating drum mounting frame 11 are provided in the wax coating tank 2; and the material rack is fixed on the rotating drum mounting frame 11.

[0023] The liquid supply pipe 6 is located above the liquid storage tank 1 and the wax coating tank 2 , and the liquid discharge pipe 7 is located below the liquid storage tank 1 and the wax coating tank 2 .

[0024] Before applying wax, inject wax liquid and deionized water into the liquid storage tank 1, then start the circulation pump 5 to fully mix the wax liquid and deionized water, and then start the liquid supply pump 8 to supply the mixed wax liquid in the liquid storage tank 1 into the wax coating tank 2, and use the drainage pump 9 to return the wax liquid to the liquid storage tank 1 to form a wax liquid circulation. After circulating for a few minutes, turn off the drainage pump 9 and store the wax liquid in the liquid storage tank 1. At this time, take out some mixed liquid and test it with a refractometer. According to the test results, if the requirements are not met, the mixed liquid is made to reach the concentration requirement by adding wax liquid or deionized water, and then continue to circulate between the liquid storage tank 1 and the wax coating tank 2.

[0025] Place the injector nut 26 on the rack in the specified orientation, then open the lid of the wax coating tank 2 and bolt the rack to the drum mounting frame 11. Close the lid. Start the liquid supply pump 8 to inject the mixed liquid from the top of the wax coating tank 2. Simultaneously, start the drum 10 to rotate. An observation window is provided on the outer wall of the wax coating tank 2. Once the injected mixed liquid can submerge the injector nut 26, stop the injection. Then, soak the injector nut 26. In this embodiment, the mixed liquid injection rate is 10-30 L / min, the drum 10 rotates at 50 rpm, the injection time is 20 seconds, and the soaking time is 1-2 minutes.

[0026] After the soaking period is complete, the drainage pump 9 is activated to drain the mixed liquid in the wax coating tank 2 into the liquid storage tank 1. The wax coating tank 2 is equipped with a liquid level sensor, and the liquid level of the mixed liquid in the wax coating tank 2 can be determined through the feedback signal from the liquid level sensor. After the drainage is completed, the rotating drum 10 is driven again, and the centrifugal force is used to remove the residual mixed liquid on the injector nut 26, so that the surface wax layer on the injector nut 26 is evenly covered. In this embodiment, the rotating drum 10 rotates at 150 rpm for 15 seconds.

[0027] After the spin-drying time is up, the drying device is activated again, using the hot air flow generated by the drying device to be directed into the wax coating tank 2 to dry the injector nut 26. In this embodiment, the heating temperature is 70 degrees Celsius, the rotation speed of the drum 10 is 200 rpm, and the heating time is 5 minutes, after which the heating is stopped. After the temperature inside the wax coating tank 2 has dropped, the lid of the wax coating tank 2 is opened, the material rack is removed, and the wax coating is complete.

[0028] Preferably, the drying device includes an oven 24 and a fan 25. Fan 25 is connected to the oven 24 and the wax coating tank 2 via a pipe. The oven 24 is also connected to the wax coating tank 2 via a pipe. An electric heating pipe is installed inside the oven 24, which heats the air when powered. Fan 25 draws the heated air into the wax coating tank 2. In this embodiment, when the oven 24 stops operating, the fan 25 continues to operate, driving airflow to lower the temperature inside the wax coating tank 2.

[0029] Better, such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the material rack includes a frame 3, on which is a placement plate 12, which is provided with a first liquid passage hole 13. A limiter seat 14 is centrally located in the first liquid passage hole 13. One side of the limiter seat 14 has an opening. A chute 15 is provided on the placement plate 12 on the side opposite the opening. The chute 15 contains a clamping device positioned opposite the opening of the limiter seat 14, and also includes a clamping device for driving the clamping device toward the opening of the limiter seat 14. The limiter seat 14 is arc-shaped, matching the outer shape of the cylindrical injector nut 26. The first liquid passage hole 13 is used to allow the mixed liquid in the wax coating tank 2 to pass through the interior of the injector nut 26, thereby preventing the mixed liquid from accumulating in the injector nut 26. During loading, the injector nut 26 is placed into the limiting holder 14 in a specific orientation. The clamping device then drives the holding device toward the opening of the limiting holder 14, securing the injector nut 26 within the limiting holder 14 to prevent it from falling during the spin-drying process. A support platform is provided at the bottom edge of the limiting holder 14, with support cones 22 evenly distributed on the support platform. These support cones 22 support the injector nut 26 while reducing the contact area with the injector nut 26.

[0030] In one embodiment, the clamping device comprises a fixture positioned opposite the opening of the position-limiting clamp 14. The clamping device comprises a guide rod 17 located at the bottom of the placement plate 12 and connected to the fixture, and a guide seat 18 cooperating with the guide rod 17. An adjustment knob 23 is provided at one end of the guide rod 17, which is located outside the guide seat 18 and threadedly connected to the guide rod 17. The fixture is a push rod 16, with a rubber pad at the end to prevent scratches on the injector nut 26 when it is pressed against the fuel injector nut. The guide rod 17 is located at the bottom of the placement plate 12, and the push rod 16 is fixedly connected to the guide rod 17. As the guide rod 17 moves back and forth, the push rod 16 can move back and forth within the slide 15. When it is necessary to lock the injector nut 26, the push rod 16 moves and abuts against the injector nut 26. Then, the adjustment knob 23 is turned. The adjustment knob 23 abuts against the edge of the guide seat 18 and rotates, driving the guide rod 17 and push rod 16 to continue moving toward the injector nut 26, thereby locking the injector nut 26. If a plurality of rows and columns of position limit holders 14 are provided, the guide rods 17 can be provided in two vertical columns, and the push rods 16 in the same row are connected by a connecting rod and then connected to the guide rod 17.

[0031] In another embodiment, the clamping device includes a fixture positioned opposite the opening of the position limiting clamp 14. The clamping device includes a guide rod 17 located at the bottom of the placement plate 12 and connected to the fixture, and a telescopic motor connected to the guide rod 17. The fixture is a push rod 16, and a rubber pad is provided at the end of the push rod 16 to prevent scratches on the surface when the push rod 16 is pressed against the injector nut 26. The telescopic rod of the telescopic motor can drive the push rod 16 toward the injector nut 26, thereby clamping the injector nut 26. The travel distance of the telescopic rod of the telescopic motor can be controlled by a travel switch (not shown in the figure of this embodiment).

[0032] Preferably, a filter 19 is provided between the liquid supply pump 8 and the wax coating tank 2. The filter 19 is used to filter the impurities carried during the flow of the mixed liquid, thereby ensuring the surface cleanliness of the injector nut 26 and the uniformity of the wax layer after wax coating.

[0033] Preferably, a pneumatic valve 20 is provided on the liquid discharge pipe 7. The pneumatic valve 20 is used to control the opening and closing of the liquid discharge pipe 7.

[0034] Preferably, the placement plate 12 is provided with a second liquid hole 21. The second liquid hole 21 is used to facilitate the passage of the mixed liquid so that the mixed liquid can quickly submerge the placement plate 12 and the injector nut 26.

[0035] The wax coating system uses manual loading and unloading, and the parts are thoroughly immersed in the liquid without dead corners. After rapid de-drying and drying, the surface of the internal thread area of the injector nut 26 is observed under a long-wave ultraviolet lamp with blue-violet fluorescence, and it can be seen that the coating is uniform. The wax coating efficiency of this system is high, and the wax liquid can be recycled and reused after the wax coating is completed.

Claims

1. A common rail injector nut wax coating system, characterized in that: The invention comprises a liquid storage tank (1), a wax coating tank (2), a drying device and a material rack. The liquid storage tank (1) is connected to a circulation pipe (4), and a circulation pump (5) is provided on the circulation pipe (4); a liquid supply pipe (6) and a liquid discharge pipe (7) are connected between the liquid storage tank (1) and the wax coating tank (2), and the liquid supply pipe (6) and the liquid discharge pipe (7) are respectively provided with a liquid supply pump (8) and a liquid discharge pump (9); the drying device is connected to the wax coating tank (2) through the drying pipe; a rotating drum (10) and a rotating drum mounting frame (11) are provided in the wax coating tank (2); and the material rack is fixed on the rotating drum mounting frame (11).

2. The common rail injector nut wax coating system according to claim 1, characterized in that: The material rack comprises a frame body (3), a placement plate (12) is provided on the frame body (3), a first liquid passage hole (13) is provided on the placement plate (12), a limit clamping seat (14) is centrally provided in the first liquid passage hole (13), an opening is provided on one side of the limit clamping seat (14), a slide groove (15) is provided on the placement plate (12) on the side opposite to the opening, a clamping device is provided in the slide groove (15) and is opposite to the opening position of the limit clamping seat (14), and a clamping device is also included for driving the clamping device to move toward the opening of the limit clamping seat (14).

3. The common rail injector nut wax coating system according to claim 2, characterized in that: The clamping device comprises a clamp opposite to the opening position of the limit clamp (14), and the clamping device comprises a guide rod (17) located at the bottom of the placement plate (12) and connected to the clamp, and a guide seat (18) matched with the guide rod (17); an adjusting knob (23) is provided at one end of the guide rod (17), and the adjusting knob (23) is outside the guide seat (18) and is threadedly connected to the guide rod (17).

4. The common rail injector nut wax coating system according to claim 2, characterized in that: The clamping device comprises a clamp opposite to the opening position of the limiting clamping seat (14), and the clamping device comprises a guide rod (17) located at the bottom of the placement plate (12) and connected to the clamp, and a telescopic motor connected to the guide rod (17).

5. The common rail injector nut wax coating system according to any one of claims 2 to 4, characterized in that: A second liquid passage hole (21) is provided on the placement plate (12).

6. The common rail injector nut wax coating system according to any one of claims 1 to 4, characterized in that: The drying device comprises a drying oven (24) and a fan (25), wherein the fan (25) is connected to the drying oven (24) and the wax coating tank (2), and the drying oven (24) is connected to the wax coating tank (2).

7. The common rail injector nut wax coating system according to claim 5, characterized in that: The drying device comprises a drying oven (24) and a fan (25), wherein the fan (25) is connected to the drying oven (24) and the wax coating tank (2), and the drying oven (24) is connected to the wax coating tank (2).

8. The common rail injector nut wax coating system according to claim 1, 2, 3, 4 or 7, characterized in that: A filter (19) is provided on the liquid supply pipe (6) between the liquid supply pump (8) and the wax coating tank (2), and a pneumatic valve (20) is provided on the liquid discharge pipe (7).

9. The common rail injector nut wax coating system according to claim 5, characterized in that: A filter (19) is provided on the liquid supply pipe (6) between the liquid supply pump (8) and the wax coating tank (2), and a pneumatic valve (20) is provided on the liquid discharge pipe (7).

10. The common rail injector nut wax coating system according to claim 6, characterized in that: A filter (19) is provided on the liquid supply pipe (6) between the liquid supply pump (8) and the wax coating tank (2), and a pneumatic valve (20) is provided on the liquid discharge pipe (7).

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