Flange joint of integrated one-way valve

Abstract

The flange joint comprises an upper main body and a lower main body which are connected with each other, and one end of the lower main body is provided with a male plug externally connected with a pipeline; a partition plate and a valve plate which are coaxial with the upper main body are radially arranged at the other end of the lower main body, after the upper main body is connected with the lower main body, the partition plate is axially locked between the upper main body and the lower main body, and a jacking block is arranged on the axial inner side of the upper main body and used for jacking and limiting the axial middle of the valve plate and the partition plate; a through hole corresponding to the valve plate is axially formed in the partition plate so that the through hole can be opened and closed through the valve plate. According to the utility model, the circular valve plate is integrally arranged in the flange joint, and the overall volume is much smaller than that of a split structure, so that the integrated flange joint can be directly assembled in a crankcase ventilation system after being integrally produced, the volume of a crankcase ventilation pipeline can be smaller, the space in a vehicle is effectively saved, and the service life of the crankcase ventilation pipeline is prolonged. And the cost of molds and pipelines can be reduced, so that the cost of the whole vehicle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a flange joint with an integrated one-way valve. Background Art

[0002] When the engine is working, the high-pressure combustible mixture and the burned gas in the combustion chamber will leak into the crankcase through the gap between the piston group and the cylinder to a certain extent, causing blowby. The components of blowby are unburned fuel gas, water vapor and exhaust gas, which will dilute the engine oil, reduce the performance of the engine oil, and accelerate the oxidation and deterioration of the engine oil. Water vapor condenses in the engine oil to form sludge, blocking the oil circuit; acidic gas in the exhaust gas mixes into the lubrication system, causing corrosion and accelerated wear of engine parts; blowby will also cause the crankcase pressure to be too high and damage the crankcase seal, causing the engine oil to leak and lose.

[0003] In order to prevent the crankcase pressure from being too high, extend the service life of the engine oil, reduce the wear and corrosion of parts, and prevent the engine from leaking oil, crankcase ventilation must be implemented. In addition, in order to meet the increasingly stringent emission requirements and improve economy, the crankcase ventilation system must also be designed during the design of the automobile engine. The new National VI emission standard stipulates that the crankcase blowby gas cannot be discharged into the atmosphere to avoid causing air pollution. Therefore, the gas separated by the oil-gas separation system must be introduced into the engine intake system and participate in combustion. Therefore, a crankcase ventilation pipe system connecting the crankcase and the cylinder intake system is required.

[0004] In order to prevent reverse blowby of the crankcase ventilation pipe, a one-way valve is usually required in the pipe, and then the one-way valve is locked on the crankcase ventilation pipe through a flange joint to achieve communication with other pipes. In the prior art, both the one-way valve and the flange joint are separate structures, which need to be installed and locked separately during installation. Not only does it occupy a large volume, but it also requires independent mold production, resulting in high mold costs, which ultimately leads to cramped assembly space for the crankcase ventilation pipe system in the vehicle and high normal assembly costs. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a flange joint with an integrated one-way valve, comprising an upper body and a lower body connected to each other, and one end of the lower body has a male plug of an external pipeline;

[0006] The other end of the lower body is radially provided with a partition plate and a valve plate coaxial with the upper body. After the upper body is connected to the lower body, the partition plate is axially locked between the upper body and the lower body, and a top block is provided on the axial inner side of the upper body to tighten the axial middle part of the valve plate against the partition plate;

[0007] The partition plate is axially provided with a through hole corresponding to the valve plate, so that the through hole can be opened and closed by the valve plate.

[0008] Wherein, a positioning protrusion corresponding to the top block is arranged in the axial middle part of the partition, a positioning hole corresponding to the positioning protrusion is opened in the valve plate, and the valve plate is axially sleeved on the positioning protrusion through the positioning hole.

[0009] Wherein, a circle of limiting convex ring 1 is radially arranged on the partition.

[0010] Wherein, a second limiting protrusion is radially arranged on the partition.

[0011] Wherein, the connection between the upper body and the lower body is a welding or snap-on connection.

[0012] Wherein, one end of the lower body used for connecting with the upper body is also radially provided with a flange, the flange is axially provided with a mounting hole and a metal bushing is arranged in the mounting hole.

[0013] Wherein, the radial outer ring of the upper body is provided with an O-ring 1, and the radial outer ring of the male plug of the lower body is provided with an O-ring 2.

[0014] Through the above technical scheme, the utility model has the following specific beneficial effects: by integrating the circular valve plate inside the flange joint, the overall volume is much smaller than that of the split structure. Therefore, the integrated flange joint can be directly assembled in the crankcase ventilation system after the overall production, which can make the volume of the crankcase ventilation pipeline smaller, thereby effectively saving space in the vehicle, and reducing the cost of molds and pipelines to reduce the cost of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0016] Figure 1 This is a schematic diagram of the exploded structure of the flange joint disclosed in the embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the flange joint assembly disclosed in the embodiment of the utility model;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the partition disclosed in the embodiment of the utility model.

[0020] The numbers in the figure indicate: 10. O-ring 1; 20. upper body; 21. top block; 30. valve plate; 40. partition; 41. through hole; 42. positioning protrusion; 43. limiting protrusion 1; 44. limiting protrusion 2; 50. metal bushing; 60. lower body; 61. flange; 70. O-ring 2. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] Embodiment 1:

[0023] refer to Figure 1-3 The flange joint with an integrated one-way valve provided in the present embodiment 1 comprises an upper body 20 and a lower body 60 connected to each other, and one end of the lower body 60 has a male plug for an external pipeline; the radial outer ring of the upper body 20 is provided with an O-ring 10, and the radial outer ring of the male plug of the lower body 60 is provided with an O-ring 2 70;

[0024] The other end of the lower body 60 is radially provided with a partition 40 coaxial with the upper body 20 and a circular valve plate 30. After the upper body 20 is connected to the lower body 60, the partition 40 is axially locked between the upper body 20 and the lower body 60. A positioning protrusion 42 corresponding to the top block 21 is provided in the axial middle part of the partition 40, and a positioning hole corresponding to the positioning protrusion 42 is opened in the valve plate 30. The valve plate 30 is axially sleeved on the positioning protrusion 42 through the positioning hole, and a top block 21 is provided on the axial inner side of the upper body 20 for tightening and limiting the axial middle part of the valve plate 30 with the partition 40; the partition 40 is axially provided with a through hole 41 corresponding to the valve plate 30 to realize the opening and closing of the through hole 41 through the valve plate 30.

[0025] In this embodiment 1, the circular valve plate 30 is integrated inside the flange joint, and the overall volume is much smaller than that of the split structure. Therefore, the integrated flange joint can be directly assembled in the crankcase ventilation system after the overall production, which can make the volume of the crankcase ventilation pipeline smaller, thereby effectively saving the space in the vehicle, and can reduce the cost of molds and pipelines to reduce the cost of the entire vehicle; and because the circular valve plate 30 with better durability is used to replace the umbrella-shaped or fan-shaped valve plates with poor durability (easy to break) used in the existing market, the service life of the flange joint with the integrated one-way valve is improved.

[0026] Embodiment 2:

[0027] Based on Example 1 and with reference to Figure 4 In the present embodiment 2, a circle of limiting protrusion 1 43 and a circle of limiting protrusion 2 44 are radially arranged on the partition 40, and the limiting protrusion 2 44 is located at the radial outer circle of the limiting protrusion 1.

[0028] In this embodiment 2, the valve plate 30 is supported by setting a limiting convex ring 1 43 and a limiting convex ring 2 44. When the fluid enters from the side of the upper body 20, an effective line seal is formed between the valve plate 30 and the limiting convex ring 1 43 and the limiting convex ring 2 44, so that the sealing performance of the overall one-way valve is better, thereby forming an effective anti-return function.

[0029] Embodiment 3:

[0030] Based on the above-mentioned embodiment 1 or 2, in this embodiment 3, the connection between the upper body 20 and the lower body 60 is a welding or a snap-on connection; wherein, the preferred welding method is laser welding sealing connection, which has higher precision and better reverse airtightness.

[0031] Embodiment 4:

[0032] Based on any of the above embodiments 1-3, in this embodiment 4, a flange 61 is radially provided at one end of the lower body 60 for connecting to the upper body 20, and a mounting hole is axially opened in the flange 61 and a metal bushing 50 is arranged in the mounting hole, so as to facilitate the fixed installation of the flange joint as a whole.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flange joint with an integrated one-way valve, characterized in that: It comprises an upper body (20) and a lower body (60) which are connected to each other, and one end of the lower body (60) is provided with a male plug for an external pipeline; The other end of the lower body (60) is radially provided with a partition (40) and a valve plate (30) coaxial with the upper body (20); after the upper body (20) is connected to the lower body (60), the partition (40) is axially locked between the upper body (20) and the lower body (60), and a top block (21) is provided on the axial inner side of the upper body (20) for tightening the axial middle part of the valve plate (30) against the partition (40) to limit the position; The partition plate (40) is axially provided with a through hole (41) corresponding to the valve plate (30), so that the through hole (41) can be opened and closed by the valve plate (30).

2. A flange joint with an integrated one-way valve according to claim 1, characterized in that: A positioning protrusion (42) corresponding to the top block (21) is provided in the axial middle portion of the partition (40), and a positioning hole corresponding to the positioning protrusion (42) is opened in the valve plate (30), and the valve plate (30) is axially sleeved on the positioning protrusion (42) through the positioning hole.

3. A flange joint with an integrated check valve according to claim 1, characterized in that: The partition plate (40) is radially provided with a limiting protrusion (43).

4. A flange joint with an integrated one-way valve according to claim 3, characterized in that: The partition plate (40) is radially provided with a second limiting protrusion (44).

5. The flange joint with integrated check valve according to claim 1, characterized in that: The connection between the upper body (20) and the lower body (60) is a welding or snap-on connection.

6. A flange joint with an integrated check valve according to claim 1, characterized in that: One end of the lower body (60) used for connecting to the upper body (20) is also radially provided with a flange (61), the flange (61) is axially provided with a mounting hole and a metal bushing (50) is arranged in the mounting hole.

7. The flange joint with integrated check valve according to claim 1, characterized in that: The radial outer ring of the upper body (20) is sleeved with an O-ring 1 (10), and the radial outer ring of the male plug of the lower body (60) is sleeved with an O-ring 2 (70).

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