Intermediate filter box oil leakage prevention mechanism

Abstract

This utility model and filter box technology disclose an oil leakage prevention mechanism for an intermediate filter box, including a filter box. An oil groove is formed along the edge of the upper surface of the filter box. Side ears are fixedly installed on both sides of the filter box. An L-shaped pipe is embedded at the lower end of the oil groove on one side of the side ear, and the upper end of the L-shaped pipe is connected to the oil groove. This utility model, by embedding an L-shaped pipe inside the filter box, can replace the machining of transverse and longitudinal holes, eliminating the need to drill them. This effectively solves the problem of oil leakage around transverse and longitudinal holes in the prior art. Simultaneously, the M14 threaded hole does not need to be machined, reducing product processing costs, and the M14 threaded plug is also unnecessary, reducing material costs. Furthermore, existing transverse and longitudinal holes have shrinkage and porosity defects after machining, leading to product leakage during pressure testing. Replacing the L-shaped pipe eliminates this leakage problem, improving product qualification rate and reducing product quality costs.

Description

Technical Field

[0001] This utility model relates to the field of filter box technology, and in particular to an oil leakage prevention mechanism for intermediate filter boxes. Background Technology

[0002] When machining the oil circuit section of the existing intermediate filter box, an L-shaped passage is drilled on the filter box body after casting to connect the longitudinal holes and the transverse holes, so as to realize the connection between the oil circuit groove and the oil tank.

[0003] However, when using the above processing method, due to the relatively loose structure of the cast parts, after drilling, hole wall shrinkage and cavitation defects will occur around the longitudinal and transverse holes, especially near the oil cavity inside the filter box. This will cause product leakage during pressure testing and affect the use of the product. In addition, the existing drilling operation cannot directly drill inside the oil passage groove when drilling transverse holes. Instead, an M14 threaded hole must be drilled in the oil passage groove first, and then the transverse hole is plugged with an M14 screw after drilling. This reduces work efficiency and increases production costs.

[0004] Therefore, we propose an oil leakage prevention mechanism for the intermediate filter box. Utility Model Content

[0005] The main purpose of this utility model is to provide an oil leakage prevention mechanism for intermediate filter boxes. It can effectively solve the problem of hole wall shrinkage and pore defects that occur around the longitudinal and transverse holes after drilling, especially in the area close to the oil cavity inside the filter box. This causes product leakage during pressure testing and affects the use of the product. In addition, the existing drilling operation cannot directly drill inside the oil passage groove when drilling transverse holes. Instead, an M14 threaded hole must be drilled in the oil passage groove first, and then the transverse hole is plugged with an M14 screw after drilling. This reduces work efficiency and increases production costs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The intermediate filter box oil leakage prevention mechanism includes a filter box, an oil groove is provided on the upper end face of the filter box along the edge, side ears are fixedly installed on both sides of the filter box, an L-shaped pipe is embedded at the lower end of the oil groove on one side of the side ear, and the upper end of the L-shaped pipe is connected to the oil groove, an oil passage groove is provided on the side ear, and the other end of the L-shaped pipe is connected to the oil passage groove.

[0007] Furthermore, the L-shaped tube is integrally cast inside the filter box.

[0008] Furthermore, oil chambers are provided inside both sides of the filter box, and the oil chambers are located on one side of the L-shaped tube.

[0009] Compared with the prior art, the present invention has the following beneficial effects: This invention replaces the machining of transverse and longitudinal holes by embedding an L-shaped tube inside the filter box, eliminating the need to drill transverse and longitudinal holes and effectively solving the oil leakage problem around transverse and longitudinal holes in the prior art. At the same time, the M14 threaded hole does not need to be machined, reducing product processing costs, and the M14 threaded plug is also not needed, reducing material costs. After the existing transverse and longitudinal holes are machined, the hole wall has shrinkage and porosity defects, which cause product leakage during pressure testing. After changing to the L-shaped tube, the leakage problem is eliminated, improving the product qualification rate and reducing product quality costs.

[0010] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the oil leakage prevention mechanism of the intermediate filter box of this utility model.

[0012] Figure 2 This is a partial cross-sectional view of the oil leakage prevention mechanism of the intermediate filter box of this utility model.

[0013] Figure 3 This utility model provides an oil leakage prevention mechanism for the intermediate filter box. Figure 2 A magnified view of A in the middle.

[0014] Figure 4 This is a schematic cross-sectional view of the oil circuit structure in the prior art.

[0015] Figure 5 For existing technology Figure 4 A magnified view of C.

[0016] In the diagram: 1. Filter box; 2. Oil tank; 3. L-shaped pipe; 4. Oil passage groove; 5. Oil chamber. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1-3 As shown, the intermediate filter box oil leakage prevention mechanism includes a filter box 1. An oil groove 2 is provided on the upper end surface of the filter box 1 along the edge. Side ears are fixedly installed on both sides of the filter box 1. An L-shaped pipe 3 is embedded at the lower end of the oil groove 2 located on one side of the side ear, and the upper end of the L-shaped pipe 3 is connected to the oil groove 2. An oil passage groove 4 is provided on the side ear, and the other end of the L-shaped pipe 3 is connected to the oil passage groove 4.

[0019] L-shaped tube 3 can be made of copper, stainless steel or other materials. When L-shaped tube 3 is embedded inside filter box 1, it can replace the processing of transverse and longitudinal holes. There is no need to drill transverse and longitudinal holes. It can effectively solve the problem of oil leakage around transverse and longitudinal holes in the existing technology, improve the product qualification rate and reduce product quality costs.

[0020] Furthermore, the L-shaped tube 3 is integrally cast inside the filter box 1. This invention directly embeds the L-shaped tube 3 inside the filter box 1, effectively avoiding subsequent drilling.

[0021] Furthermore, oil chambers 5 are provided inside both sides of the filter box 1, and the oil chambers 5 are located on one side of the L-shaped tube 3.

[0022] In existing technologies such as Figure 4-5 As shown, on the cast filter box 1, a longitudinal hole 8 is drilled in the oil tank 2 located on one side of the side ear. An M14 threaded hole 6 is opened on one side of the oil passage 4. The purpose is to drill a horizontal transverse hole 7 at the lower end of the longitudinal hole 8. When drilling the transverse hole 7, a drill bit is used to pass through the M14 threaded hole 6. The horizontal transverse hole 7 is drilled on the filter box 1 on one side of the oil passage 4. When drilling the transverse hole 7 and the longitudinal hole 8, they must be connected to form a connected L-shaped pipeline. The transverse hole 7 and the longitudinal hole 8 are ensured by machining. To machine the transverse hole 7 with a diameter of 8, the leftmost end is machined with an M14 threaded hole 6, and finally, it is plugged with an M14 screw after machining. After machining, the hole walls of the transverse hole 7 and the longitudinal hole 8 have shrinkage and porosity defects. During product pressure testing, this causes leakage into the oil cavity 5. Figure 5 The location indicated by the red line.

[0023] It should be noted that this utility model is an oil leakage prevention mechanism for intermediate filter boxes. During production, an L-shaped tube 3 is first placed between the oil tank 2 and the oil passage tank 4 on the mold. Then, it is directly cast inside the mold, and the L-shaped tube 3 is embedded inside the filter box 1. This can effectively avoid subsequent drilling and solve the problem of oil leakage around the transverse and longitudinal holes in the prior art. At the same time, the M14 threaded hole does not need to be processed, reducing product processing costs. The M14 threaded plug is also not needed, reducing material costs. After the existing transverse and longitudinal holes are processed, the hole walls have shrinkage and porosity defects, which cause product leakage during pressure testing. After changing to the L-shaped tube 3, there is no leakage problem, which improves the product qualification rate and reduces product quality costs. It is quite practical.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil leakage prevention mechanism for an intermediate filter tank, characterized by: Including filter box (1), the upper end surface of the filter box (1) is provided with an oil groove (2) along the edge position, both sides of the filter box (1) are fixedly provided with side ears, the lower end of the oil groove (2) on one side of the side ear is embedded with an L-shaped pipe (3), and the upper end of the L-shaped pipe (3) is connected with the oil groove (2), an oil channel groove (4) is formed on the side ear, and the other end of the L-shaped pipe (3) is connected with the oil channel groove (4).

2. The oil leakage prevention mechanism for an intermediate filter tank according to claim 1, characterized by: The L-shaped pipe (3) is integrally cast in the filter box (1).

3. The oil leakage prevention mechanism for an intermediate filter tank according to claim 1, characterized by: Oil cavities (5) are arranged in the both sides of the filter box (1), and the oil cavities (5) are located on one side of the L-shaped pipe (3).

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