Disc for disc type oil-gas separator and assembly thereof

Abstract

The utility model provides a disc for a disc type oil-gas separator and an assembly of the disc type oil-gas separator, and belongs to the technical field of oil-gas separators. The disc for the disc type oil-gas separator comprises a disc body which is of a cone structure, the disc body comprises a middle assembly disc, and outer discs and inner discs which are equal in number are fixedly connected to the outer wall of the middle assembly disc. The disc body is composed of the middle assembly disc, the outer disc bodies and the inner disc bodies, the outer disc bodies and the inner disc bodies are arranged in the same number, the outer contour gas channeling channels and the inner contour gas channeling channels are formed by the outer disc bodies and the inner disc bodies, the outer contour gas channeling channels and the inner contour gas channeling channels are located on the two sides of the disc respectively, and meanwhile the gas channeling situation is avoided; the requirement for the shape precision of the disc is low, it can be guaranteed that each channel can achieve independent blow-by flow, meanwhile, the disc assembly can be integrally maintained and replaced, and the situation that the whole separator is replaced can be avoided.

Description

Technical Field

[0001] The present application relates to the field of oil-gas separators, and in particular to a disc for a disc-type oil-gas separator and a component thereof. Background Art

[0002] When the engine is working, the compressed gas in the process of piston movement is mainly sealed by the piston ring. Although the piston ring can seal most of the gas, no matter how good its sealing performance is, there is still a gap between the piston ring and the cylinder body, and the sealing ring itself also has an interface. Under the explosion pressure of the high-temperature and high-pressure mixed gas in the cylinder, it is inevitable that a small amount of gas will pass through the piston ring and into the crankcase of the engine, thereby forming crankcase pollutants. This phenomenon is generally called crankcase blowby. Most of these gases are composed of incompletely burned hydrocarbons. The engine needs to discharge these exhaust gases. While treating the exhaust gas in the crankcase, it is necessary to avoid a large amount of consumption of engine oil in the blowby gas. Therefore, it is necessary to separate the gas in the blowby gas and keep the engine oil in the blowby gas in the oil pan as much as possible. Therefore, an important component in the crankcase ventilation system is the oil-gas separator, which is used to separate the oil and gas in the blowby gas. Currently, most heavy-duty diesel engines use high-speed centrifugal oil-gas separators, which are driven by high-pressure oil to achieve high-speed rotation of the separation components, driving the blowby gas entering the separator, and using the acceleration generated by the high-speed rotation of the disc to throw out the droplets in the blowby gas. At a speed of 10,000 rpm, an acceleration effect of more than 2000G can be achieved.

[0003] Under this acceleration, the fine oil mist particles in the crankcase blowby have a high inertia, and after leaving the disc, they still run along the cone angle of the disc and collide and capture with the outer shell of the separator. At this time, the gas is naturally separated from impurities such as oil mist particles with high efficiency. The disc design of the current disc-type oil-gas separator products is mostly a solution with a single side as a plane and the other side as an isolation rib. This design structure is simple, but the separation channel is concentrated on one side of the disc, which puts forward relatively high requirements on the roundness and dimensional accuracy of the disc. When the parts are deformed or uneven, the channels in the inner cavity of the disc are connected to each other, and the gas cannot move according to the flow channel. At the same time, the disc needs to rotate at high speed. When the discs are assembled in the inner cavity of the disc separator in sequence, the disc assembly needs to be dynamically balanced to avoid the movement fatigue wear of various shaft components caused by uneven mass. At the same time, during the operation of the engine, in addition to the oil mist particles, there are also smoke particles from incomplete combustion. If these smoke particles are blocked in the blowby channel of the disc, the flow resistance of the entire separator will be large, and effective separation cannot be achieved, so the separator can only be replaced as a whole. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a disc and its assembly for a disc-type oil-gas separator, aiming to improve the problem that the existing disc is set on one side.

[0005] In a first aspect, an embodiment of the present application provides a disc for a disc-type oil-gas separator, comprising:

[0006] A disc body is arranged in a cone structure, and the disc body includes a middle assembly disc, and an equal number of outer discs and inner discs are fixedly connected to the outer wall of the middle assembly disc, and a plurality of the outer discs and a plurality of the inner discs are arranged at equal intervals, and a plurality of outer contour blowby channels and a plurality of inner contour blowby channels are formed between them.

[0007] In a specific implementation manner, a hexagonal mounting hole is provided in the middle of the intermediate assembly disk, and a positioning mark for assembling the disc body is provided thereon.

[0008] In a specific implementation, the two ends of the outer disc are respectively attached to the two adjacent inner discs, and the outer contour blowby channel is formed between the two adjacent inner discs, and the inner contour blowby channel is formed between the inner disc and the two adjacent outer discs.

[0009] In a specific implementation manner, the thickness of the outer disc and the inner disc are both 0.3 mm, and the depth of the outer contour blowby channel and the inner contour blowby channel are both 0.3 mm.

[0010] In a specific implementation, an isolation rib for controlling the stacking gap between the two disc bodies is fixedly installed at the bottom of the outer contour blow-by gas channel.

[0011] In a specific implementation manner, the outer contour blow-by gas channel and the inner contour blow-by gas channel are both arranged in a spiral shape and are arranged at equal intervals.

[0012] In a second aspect, the present application further provides a component, including the above-mentioned disc for disc-type oil-gas separator; and

[0013] A hexagonal positioning shaft, on which a plurality of the disc bodies are assembled, is assembled so that the positioning marks on a plurality of the intermediate assembly disks are sequentially installed facing the six faces of the hexagonal positioning shaft.

[0014] In a specific embodiment, an inner hexagonal hole is provided in the middle of the hexagonal positioning shaft.

[0015] The beneficial effects of the present application are as follows: the disc body is composed of a middle assembly disc, and an equal number of outer discs and inner discs, and the equal number of outer discs and inner discs form an equal number of outer contour blow-by channels and inner contour blow-by channels, and the outer contour blow-by channels and the inner contour blow-by channels are respectively located on both sides of the disc, and blow-by will not occur. The requirements for the shape accuracy of the disc are low, and it can be ensured that each channel can achieve independent blow-by flow. At the same time, the disc assembly can be maintained and replaced as a whole, and replacement of the overall separator can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of a disc for a disc-type oil-gas separator and a disc body in its assembly provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the side structure of a disc body of a disc and its assembly for a disc-type oil-gas separator provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of a disc for a disc-type oil-gas separator and a disc assembly in its assembly provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of a hexagonal positioning shaft in a disc and its assembly for a disc-type oil-gas separator provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the side structure of a disc for a disc-type oil-gas separator and a hexagonal positioning shaft in its assembly provided in an embodiment of the present application;

[0022] Figure 6 for Figure 3 A partial enlarged view of point A in the middle.

[0023] In the figure: 10 - disc body; 110 - middle assembly plate; 120 - outer disc; 130 - inner disc; 140 - outer contour blowby channel; 150 - inner contour blowby channel; 20 - hexagonal mounting hole; 210 - positioning mark; 30 - isolation rib; 40 - hexagonal positioning shaft; 410 - inner hexagonal hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0025] See also Figure 1-6 The present application provides a disc for a disc-type oil-gas separator, including a disc body 10, specifically a plastic molded disc with a cone structure, the disc body 10 includes an intermediate assembly disk 110, and the outer wall of the intermediate assembly disk 110 is fixedly connected with an equal number of outer discs 120 and inner discs 130. Specifically, the outer discs 120 and the inner discs 130 are each set to six, and are arranged at equal intervals, and are spirally installed on the outer wall of the intermediate assembly disk 110, thereby forming a disc body 10 with a cone structure, and a plurality of outer discs 120 and a plurality of inner discs 130 are arranged at equal intervals, and a plurality of outer contour blowby channels 140 and a plurality of inner contour blowby channels 150 are formed between each other, and further, six outer contour blowby channels 140 and six inner contour blowby channels 150 are formed between the six outer discs 120 and the six inner discs 130.

[0026] See also Figure 1 , so that the disc body 10 is divided into 12 areas, and a spiral line segmentation scheme is adopted, with 12 0.3mm blowby gas channels on both sides. Specifically, 6 areas are the outer contour blowby gas channels 140 of the disc, and the other 6 areas are the inner contour blowby gas channels 150 of the disc. The inner contour blowby gas channels 150 and the outer contour blowby gas channels 140 are arranged at intervals, so that every two adjacent channels do not exchange blowby gas, and at the same time, the requirements for the shape accuracy of the disc are low, which can ensure that each channel can achieve independent blowby gas flow. It should be noted that the two ends of the outer disc 120 are respectively attached to the two adjacent inner discs 130, and an outer contour blowby gas channel 140 is formed between the two adjacent inner discs 130, and an inner contour blowby gas channel 150 is formed between the inner disc 130 and the two adjacent outer discs 120. At the same time, the thickness of the outer disc 120, the inner disc 130, the outer contour blowby gas channel 140 and the inner contour blowby gas channel 150 are all 0.3mm.

[0027] See also Figure 3 and 6 At the center position where the blow-by gas passes, there is an isolation rib 30 for controlling the stacking gap between the two disc bodies 10, which is used to avoid the problem of channel extrusion and deformation caused by pressure and other reasons during assembly and operation of the plastic disc. It is specifically installed at the bottom of the outer contour blow-by gas channel 140, and each outer contour blow-by gas channel 140 is provided with an isolation rib 30 at the bottom.

[0028] The inner wall of the disc is provided with an assembly mark, specifically, a positioning mark 210 on the middle assembly disk 110 , and a hexagonal mounting hole 20 is provided in the middle of the middle assembly disk 110 .

[0029] See also Figure 3-6A component includes the above-mentioned disc for disc-type oil-gas separator, a hexagonal positioning shaft 40, and a plurality of disc bodies 10 assembled on the hexagonal positioning shaft 40. During assembly, the positioning marks 210 on the plurality of intermediate assembly disks 110 are installed in sequence opposite to the six surfaces of the hexagonal positioning shaft 40.

[0030] Specifically, when the disc bodies 10 are loaded onto the hexagonal positioning shaft 40 in sequence, they are assembled in sequence according to a set order to achieve quality balance in the circumferential direction, and the middle assembly disk 110 has a positioning mark 210. When they are installed on the hexagonal positioning shaft 40 in sequence, they are assembled in accordance with the assembly sequence of the inner ring of the hexagonal positioning shaft 40 and the six faces around the outer six sides of the hexagonal positioning shaft 40 in a positioning order of 1-2-3-4-5-6, and the number of disc bodies 10 arranged on the entire hexagonal positioning shaft 40 is assembled in multiples of 6 to achieve quality balance in the circumferential direction.

[0031] The disc body 10 is assembled on the hexagonal positioning shaft 40. The hexagonal positioning shaft 40 is as shown in FIG. Figure 4 and 5 As shown, the middle part of the hexagonal positioning shaft 40 is designed as an outer hexagonal design, and the hexagonal design is assembled with the inner hexagonal design at the center of the disc body 10. The inner hole of the hexagonal positioning shaft 40 also has an inner hexagonal design, that is, the inner hexagonal hole 410 opened in the middle of the hexagonal positioning shaft 40 is used to connect with the rotary drive and realize the drive of the entire disc assembly. The drive can be driven by liquid injection or by a motor.

[0032] As described above, the disc body 10 has an assembly positioning mark 210 in the middle. During assembly, the positions of the positioning mark 210 are rotated in sequence according to the assembly sequence, from the first six directions to the last, for a total of six directions, which form a group.

[0033] The disc bodies 10 are assembled in groups of 6 as above, and the disc assembly is assembled in multiples of 6 to achieve mass balance of the disc assembly during axial rotation, reduce the dynamic balance analysis of the assembled product, and achieve dynamic balance through material addition.

[0034] The assembled disc is fixed as a component on the hexagonal locating shaft 40 after adjusting the tightness between the gaskets by the upper and lower pressure plates. In the subsequent operation, if there are problems such as blockage due to solid impurities in the blowby gas or wear of the hexagonal locating shaft 40, the disc assembly can be replaced as a whole, which can achieve convenient maintenance in the future and low maintenance cost.

[0035] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A disc for a disc-type oil-gas separator, characterized in that: include A disc body (10) is arranged in a cone structure, the disc body (10) comprising an intermediate assembly disc (110), an outer wall of the intermediate assembly disc (110) being fixedly connected with an equal number of outer discs (120) and inner discs (130), a plurality of the outer discs (120) and a plurality of the inner discs (130) being arranged at equal intervals, and forming a plurality of outer contour blowby channels (140) and a plurality of inner contour blowby channels (150) therebetween.

2. A disc for a disc-type oil-gas separator according to claim 1, characterized in that: A hexagonal mounting hole (20) is provided in the middle of the intermediate assembly plate (110), and a positioning mark (210) for assembling the disc body (10) is provided thereon.

3. A disc for a disc-type oil-gas separator according to claim 2, characterized in that: The two ends of the outer disc (120) are respectively attached to the two adjacent inner discs (130), and the outer contour blowby passage (140) is formed between the outer disc (120) and the two adjacent inner discs (130), and the inner contour blowby passage (150) is formed between the inner disc (130) and the two adjacent outer discs (120).

4. A disc for a disc-type oil-gas separator according to claim 3, characterized in that: The thickness of the outer disc (120) and the inner disc (130) are both 0.3 mm, and the depth of the outer contour blowby gas channel (140) and the inner contour blowby gas channel (150) are both 0.3 mm.

5. A disc for a disc-type oil-gas separator according to claim 4, characterized in that: An isolation rib (30) for controlling the stacking gap between the two disc bodies (10) is fixedly mounted at the bottom of the outer contour blowby channel (140).

6. A disc for a disc-type oil-gas separator according to claim 5, characterized in that: The outer contour blowby gas channel (140) and the inner contour blowby gas channel (150) are both arranged in a spiral shape and are arranged at equal intervals.

7. A component, characterized in that A disc for a disc-type oil-gas separator comprising any one of claims 2 to 6; and A hexagonal positioning shaft (40) is mounted on a plurality of the disc bodies (10). During assembly, the positioning marks (210) on the plurality of the intermediate assembly disks (110) are sequentially mounted opposite to the six faces of the hexagonal positioning shaft (40).

8. An assembly according to claim 7, characterized in that An inner hexagonal hole (410) is provided in the middle of the hexagonal positioning shaft (40).

Images