Environment-friendly split type engine respirator

Abstract

The environment-friendly split type engine respirator comprises a cavity, a filtering part is arranged in the cavity, the cavity is provided with an exhaust port in the top, a blow-by inlet in the bottom and an oil return port, the cavity comprises an upper cavity body and a lower cavity body which are detachable, and the filtering part is installed on the top of the lower cavity body; the filtering part comprises a filtering material, and the filtering material is arranged on a supporting frame located on the cavity wall of the lower cavity and is fixed in an auxiliary mode through a spring arranged in the upper cavity; the lower portion of the cavity comprises a plurality of zigzag blades, and the bottoms of the zigzag blades are fixed to the inner wall of the cavity through a support and face the blow-by inlet. The upper cavity and the lower cavity are of a split structure, when the filter element needs to be scrapped, the upper cavity is screwed open, the scrapped filter element is taken out and replaced with a new filter element, the whole respirator does not need to be discarded, and the garbage treatment amount is reduced. And the zigzag blades can prolong the service time of the filter element, reduce the replacement frequency and further improve the environmental friendliness.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine crankcase ventilation technology, and specifically is an environmentally friendly split engine breather. Background Art

[0002] The engine breather is the part that connects the crankcase ventilation to the outside world. It is used to treat blowby gas, balance the crankcase pressure, filter harmful substances, and recover engine oil.

[0003] Existing engine breathers primarily consist of valves for regulating pressure and filter elements and paper for filtering. Some filter elements and paper also function as oil recyclers. After a period of use, these existing engine breathers must be completely replaced when their filtering capacity degrades and no longer meets filtration requirements. Discarded breathers are difficult to dispose of, which is detrimental to environmental protection. Utility Model Content

[0004] The main purpose of the utility model is to provide an environmentally friendly split engine respirator, which can easily and quickly replace the filter structure part, thereby reducing the number of overall replacements, alleviating the subsequent processing burden, and being environmentally friendly.

[0005] The utility model provides an environmentally friendly split engine respirator, comprising a cavity, a filter portion provided in the cavity, and an exhaust port at the top, a blowby gas inlet at the bottom, and an oil return port.

[0006] The cavity includes a detachable upper cavity and a lower cavity, and the filter part is installed on the top of the lower cavity;

[0007] The filter portion includes a filter material, which is placed on a support frame located on the wall of the lower cavity and is fixed with the assistance of a spring arranged in the upper cavity;

[0008] The lower part of the cavity includes a plurality of folded blades, the bottoms of the folded blades are fixed to the inner wall of the cavity through brackets and face the blowby gas inlet.

[0009] As a further improvement, the upper cavity and the lower cavity are connected via side wall threads to facilitate installation and disassembly between the upper cavity and the lower cavity.

[0010] As a further improvement, the folded blades form a ring around the center line of the cavity, thereby increasing the condensation and recovery capability of the engine oil.

[0011] As a further improvement, the bottom end of the folding blade has an oil leakage port, so that the oil condensed and collected on the upper surface of the folding blade can fall to the folding blade of the next level or the bottom wall of the lower cavity.

[0012] As a further improvement, the multiple folding blades are arranged from bottom to top, and the oil leakage port of each of the multiple folding blades faces the folding blade below or the bottom wall of the lower cavity.

[0013] As a further improvement, an oil blocking ring is fixedly provided at the connection position between the blowby gas inlet and the bottom wall of the lower cavity to prevent oil backflow. The blowby gas inlet is also provided with a one-way valve.

[0014] The application of the technical solution of the present invention has the following technical effects:

[0015] (1) The environmentally friendly split engine respirator provided by the present invention has a split structure of the upper cavity and the lower cavity. When the filter element needs to be scrapped, the upper cavity is unscrewed, the scrapped filter element is taken out and replaced with a new one. There is no need to discard the entire respirator, which reduces the amount of waste to be disposed of, reduces the difficulty of disposal, and improves environmental friendliness.

[0016] (2) The environmentally friendly split engine breather provided by the utility model is provided with a set of folding blades that can recover the engine oil before the blowby gas enters the filter element, which can extend the service life of the filter element, reduce the number of replacements, and further improve environmental friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 Shows the overall structural diagram of the environmentally friendly split engine breather;

[0019] Figure 2 A front view of an environmentally friendly split engine breather is shown;

[0020] Figure 3 Shown Figure 2 Schematic diagram of the middle AA section;

[0021] Figure 4-5 A schematic structural diagram of a group of folded blades is shown.

[0022] In the picture:

[0023] 1. Upper cavity;

[0024] 2. Lower cavity;

[0025] 21. Support frame;

[0026] 22. Oil blocking ring;

[0027] 3. Exhaust port;

[0028] 4. Blow-by gas inlet;

[0029] 5. One-way valve;

[0030] 6. Oil return port;

[0031] 7. Filtration unit;

[0032] 8. Spring;

[0033] 9. Folded leaves;

[0034] 91. Inner folding plate;

[0035] 92. External folding plate;

[0036] 93. Oil leak hole;

[0037] 94. Gas passes through the mouth. DETAILED DESCRIPTION

[0038] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0039] like Figure 1-3 As shown, the environmentally friendly split engine breather includes an upper cavity 1 and a lower cavity 2 that are threadedly connected. The upper cavity 1 has an exhaust port 3. The bottom wall of the lower cavity 2 is connected to a blowby gas inlet 4 and an oil return port 6. The blowby gas inlet 4 is equipped with a one-way valve 5.

[0040] A support frame 21 is fixedly provided on the upper part of the lower cavity 2. The support frame 21 is used to support the filter part 7. The filter part 7 can be made of filter material or an integrated filter element. The upper part of the filter part 7 is in contact with the spring 8, and the upper end of the spring 8 is in contact with the top wall of the upper cavity 1. The function of the spring 8 is, on the one hand, to assist in fixing the filter part 7, and on the other hand, to allow the top of the spring 8 to rotate relative to the top wall of the upper cavity 1 during installation or disassembly, thereby avoiding damage to the filter part due to the force of rotation during installation and disassembly. The spring 8 does not rotate relative to the filter part because the friction between the two is greater. The spring is selected to replace the method of fixing the filter part with a flange structure at the lower part of the upper cavity. If the flange is used to fix the filter part, when the upper cavity is rotated, the flange fixed to the wall of the upper cavity will rotate relative to the filter part, generating sliding friction that damages the filter part. The use of a spring can avoid similar situations to a certain extent and also plays a fixing role.

[0041] With the above structure, when the filter part needs to be scrapped, the upper cavity is unscrewed, the scrapped filter part is taken out and replaced with a new one. There is no need to discard the entire respirator, which reduces the amount of waste to be disposed of, reduces the difficulty of disposal, and improves environmental friendliness.

[0042] In order to further reduce the filtering pressure of the filter unit, extend the service life of the filter unit and reduce the number of replacements, the oil components in the blowby gas can be collected and recovered in advance, which can extend the service life of the filter unit.

[0043] like Figure 3-5 As shown, a group of folding blades 9 are used to collect and recycle the oil in the blowby gas. In this embodiment, three folding blades are used as an example and are arranged in sequence from top to bottom. The folding blades 9 are folded in the vertical direction, including an inner folding plate 91 and an outer folding plate 92 facing inward. The inner folding plate 91 and the outer folding plate 92 are both wound around the central axis of the cavity to form an annular plate. The inner folding plate 91 and the outer folding plate 92 are connected at the bottom and have an oil leakage hole 93. Except for the top folding blade, the upper edge of the inner folding plate 91 of the other folding blades is open to form a gas passage 94 to allow the blowby gas to pass through. The inner folding plate of the top folding blade continues to extend to the upper edge and is closed, preventing the blowby gas from ascending and forcing the blowby gas to flow obliquely downward on both sides. The support structure of the folding blade can be fixed to the cavity wall in various forms. In order to facilitate the display of the air flow, the support structure of the folding blade is omitted in the figure.

[0044] refer to Figure 3 As shown by the dotted line, as the blowby gas ascends, a portion is diverted to the sides by the inner fold plate 91, then flows upward beneath the outer fold plate 92. The remaining portion continues upward through the gas passage 94, where it is further diverted until it reaches the topmost folded blade and flows diagonally downward to the sides. During this process, condensed oil droplets flow along the edges of the folded blades, either directly or through the oil leak holes 93 onto the next folded blade, ultimately reaching the bottom of the lower chamber and flowing into the oil return port 6. All blowby gas ultimately passes through the filter 7 and is discharged from the exhaust port 3.

[0045] In order to prevent the oil from flowing back to the blowby gas inlet 4, an oil blocking ring 22 protruding from the bottom wall is fixedly provided at the connection position between the blowby gas inlet 4 and the bottom wall of the lower cavity. The oil leakage hole position of the lowest folded blade should fall outside the range of the oil blocking ring 22.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An environmentally friendly split engine respirator, comprising a cavity, a filter portion provided in the cavity, an exhaust port at the top, a blowby gas inlet at the bottom, and an oil return port, characterized in that: The cavity includes a detachable upper cavity and a lower cavity, and the filter part is installed on the top of the lower cavity; The filter portion includes a filter element, which is placed on a support frame located on the wall of the lower cavity and is fixed with the assistance of a spring arranged in the upper cavity; The lower portion of the cavity includes a plurality of folded blades, the bottoms of the folded blades being fixed to the inner wall of the cavity via brackets and facing the blowby gas inlet; The upper cavity and the lower cavity are connected by side wall threads; The blowby gas inlet is provided with a one-way valve.

2. The environmentally friendly split engine breather according to claim 1, characterized in that: The folded blades form a ring around the center line of the cavity.

3. The environmentally friendly split engine breather according to claim 2, characterized in that: The bottom end of the folded blade is provided with an oil leakage port.

4. The environmentally friendly split engine breather according to claim 3, characterized in that: The multiple folding blades are arranged from bottom to top, and the oil leakage port of each of the multiple folding blades faces the folding blade below or the bottom wall of the lower cavity.

5. The environmentally friendly split engine breather according to claim 1, characterized in that: An oil blocking ring is fixedly provided at the connection position between the blowby gas inlet and the bottom wall of the lower cavity.

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