Filtering type oil-gas separation structure for engine crankcase

Abstract

The utility model relates to the technical field of engine crankcase, put forward a kind of filter oil-gas separation structure for engine crankcase, including cyclone separator, the upper end of cyclone separator is connected with outlet tube, and the upper end flange connection of outlet tube has air extraction pump, and the front end of air extraction pump is installed and is connected with exhaust pipe, the upper end of the collecting cylinder is threadedly connected with the lower end of cyclone separator, and the upper left end of cyclone separator is connected with air inlet pipe, the right end of anti-reverse box is connected with air inlet pipe, and the inside hinged connection of anti-reverse box has baffle, the left upper end of sealing oil valve is connected at the right side wall upper end of collecting cylinder, the inside of filter cover is filled with activated carbon, and the left and right sides of filter cover are connected with installation pipe by filter screen. The filter oil-gas separation structure for engine crankcase, it is convenient to separate the oil gas fully, and it is also convenient to collect and clean the separated oil in time.

Description

Technical Field

[0001] This utility model relates to the field of engine crankcase technology, specifically to a filter-type oil-gas separation structure for engine crankcases. Background Technology

[0002] With increasingly stringent vehicle emission regulations, the design requirements for engine crankcase ventilation systems are becoming more and more demanding. Technologies such as closed crankcase ventilation systems and high-efficiency oil-gas separators have emerged. At the same time, in order to develop high-performance, fuel-efficient, and emission-friendly engines, direct injection and various turbocharging technologies have been applied. This has resulted in a significant increase in blow-by gas volume as the combustion pressure increases. Therefore, a more efficient and economical crankcase blow-by oil-gas separation system has become the research and development goal of designers.

[0003] Prior art 1 (application number: CN202223234704.4) discloses an active oil-gas separation device, belonging to the technical field of engine crankcase ventilation devices. It addresses the problems of existing active oil-gas separation devices, such as complex structure, high motor power, high failure rate, and high cost. It includes an exhaust module and a cyclone separator. The air inlet of the cyclone separator is connected to the engine crankcase, the air outlet of the cyclone separator is connected to the air inlet of the exhaust module, and the air outlet of the exhaust module is connected to the engine air inlet. This active oil-gas separation device increases the flow rate through the cyclone separator via the exhaust module, achieving ultra-high oil-gas separation efficiency, and ensures negative pressure in the crankcase throughout the entire operation process, meeting regulatory requirements.

[0004] However, in implementing the relevant technology, the above-mentioned active oil-gas separation device has the following problems: oil and gas are separated by a cyclone separator alone, and the separated gas may also be bound to lighter oil, which makes the gas unusable. At the same time, it is also inconvenient to collect and clean the separated oil in a timely manner. Utility Model Content

[0005] This invention proposes a filter-type oil-gas separation structure for engine crankcases, which solves the problem in related technologies where oil and gas are separated by only a cyclone separator, and the separated gas may also be contaminated with lighter oil, making the gas unusable and inconvenient to collect and clean the separated oil in a timely manner.

[0006] The technical solution of this utility model is as follows: A filter-type oil-gas separation structure for engine crankcase, including a cyclone separator, the upper end of the cyclone separator is connected to an exhaust pipe, and the upper flange of the exhaust pipe is connected to an air pump, and the front end of the air pump is connected to an exhaust pipe.

[0007] The upper end of the collection cylinder is threadedly connected to the lower end of the cyclone separator, and the upper left end of the cyclone separator is connected to the air inlet pipe.

[0008] Also includes:

[0009] An anti-reverse valve box, the right end of which is connected to the intake pipe, and the internal hinge of the anti-reverse valve box is connected to a baffle, and the left end of the anti-reverse valve box is connected to a connecting pipe through a connecting port;

[0010] A sealing oil valve, the upper left end of which is connected to the upper right side wall of the collecting cylinder;

[0011] The filter cover is filled with activated carbon, and both its left and right sides are connected to the installation pipe through filter screens.

[0012] Preferably, the lower right end of the inner wall of the anti-reverse box has an arc-shaped structure, and both the upper and lower ends of the inner wall of the anti-reverse box are fixedly connected to limit blocks, and the right side of the limit block is hinged to a baffle.

[0013] Preferably, a limiting rod is connected through the baffle, and a spring is sleeved on the outer surface of the limiting rod, and the baffle forms a sliding structure on the limiting rod.

[0014] Preferably, the front end of the exhaust pipe is connected to the mounting pipe via a flange, and the filter cover connected to the mounting pipe has a hollow hemispherical structure, and the filter covers are fixed together with bolts to form a hollow spherical structure.

[0015] Preferably, the sealing oil valve includes a connecting pipe, a buoyancy rod, and a buoyancy block. The left end of the connecting pipe is connected to the collecting cylinder, the upper end of the connecting pipe is connected to the buoyancy rod, and the lower end of the buoyancy rod is integrally connected to the buoyancy block.

[0016] Preferably, the connecting pipe has a "U" shaped structure, and the upper right end of the connecting pipe is higher than the upper end of the collecting cylinder.

[0017] Preferably, the outer surface of the buoyancy block is fitted to the inner wall of the connecting pipe, and the upper end of the buoyancy rod connected to the upper end of the buoyancy block has a spherical structure.

[0018] The working principle and beneficial effects of this utility model are as follows: it is mainly to facilitate the full separation of oil and gas, and also to facilitate the timely collection and cleaning of the separated oil.

[0019] In this utility model, an anti-reverse box and a baffle are provided. The baffle slides unidirectionally on the limiting rod by a spring, which facilitates the unidirectional flow of oil and gas through the inside of the anti-reverse box into the intake pipe, and prevents oil and gas from flowing back through the anti-reverse box into the engine crankcase, thus affecting its use.

[0020] In this utility model, a filter cover and activated carbon are provided. The inside of the filter cover is filled with activated carbon, which facilitates the re-filtration of the treated and separated flue gas and facilitates the reuse of flue gas. At the same time, the filter covers are bolted together, which facilitates installation and disassembly, makes it easy to replace the activated carbon, and is convenient to use.

[0021] In this utility model, a sealing oil valve and a collection cylinder are provided. The sealing oil valve is installed and connected to the right side wall of the collection cylinder. When there is too much oil in the collection cylinder, the buoyancy rod of the sealing oil valve is pushed upward, which makes it easy to remind the staff to clean out the oil in the collection cylinder in a timely manner, making it convenient to use. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the anti-reverse box proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the internal connection structure of the filter cover, filter screen and mounting tube proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the sealing oil valve structure proposed in this utility model.

[0027] In the diagram: 1. Cyclone separator; 2. Outlet pipe; 3. Air pump; 4. Exhaust pipe; 5. Inlet pipe; 6. Anti-backflow box; 7. Connecting pipe; 8. Collection cylinder; 9. Sealing oil valve; 901. Connecting pipe; 902. Buoyancy rod; 903. Buoyancy block; 10. Connection port; 11. Limiting rod; 12. Spring; 13. Limiting block; 14. Baffle; 15. Mounting pipe; 16. Filter cover; 17. Filter screen; 18. Activated carbon. Detailed Implementation

[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0029] Please see Figures 1-4This utility model provides a technical solution for a filter-type oil-gas separation structure for an engine crankcase: including a cyclone separator 1, an outlet pipe 2, an air pump 3, an exhaust pipe 4, an intake pipe 5, an anti-backflow box 6, a connecting pipe 7, a collection cylinder 8, a sealing oil valve 9, a connecting pipe 901, a buoyancy rod 902, a buoyancy block 903, a connection port 10, a limiting rod 11, a spring 12, a limiting block 13, a baffle 14, an installation pipe 15, a filter cover 16, a filter screen 17, and activated carbon 18.

[0030] The working principle and usage process of this utility model are as follows: First, combined with... Figure 1 and Figure 2 As shown, the lower right end of the inner wall of the anti-reverse box 6 has an arc-shaped structure, and the upper and lower ends of the inner wall of the anti-reverse box 6 are fixedly connected to the limit blocks 13. The right side of the limit block 13 is hinged to a baffle 14. A limit rod 11 is connected through the baffle 14, and a spring 12 is sleeved on the outer surface of the limit rod 11. The baffle 14 forms a sliding structure on the limit rod 11. The left end of the connecting pipe 7 is connected to the engine crankcase through a flange. The oil and gas in the engine crankcase enter the interior of the anti-reverse box 6 through the connecting pipe 7, pushing the baffle 14 to the right, so as to facilitate entering the intake pipe 5 and then entering the cyclone separator 1 for oil and gas separation. The baffle 14 is flipped and adjusted inside the anti-reverse box 6 by the limit rod 11. Under the elastic action of the spring 12, the baffle 14 is flipped and adjusted in one direction inside the anti-reverse box 6 to prevent oil and gas from flowing back into the anti-reverse box 6 and entering the engine crankcase. This facilitates the control of the one-way flow of oil and gas and makes it easy to handle.

[0031] Combination Figure 1 and Figure 3 As shown, the front end of the exhaust pipe 4 is connected to the mounting pipe 15 through a flange, and the filter cover 16 connected to the mounting pipe 15 has a hollow hemispherical structure. The filter covers 16 are fixed together with bolts to form a hollow spherical structure. The treated flue gas is drawn out by the suction pump 3 and discharged to the exhaust pipe 4. Through the filtration effect of the activated carbon 18 inside the filter cover 16, impurities in the flue gas are prevented from being discharged, making it convenient for flue gas to be reused and easy to use.

[0032] Combination Figure 1 and Figure 4As shown, the sealing oil valve 9 includes a connecting pipe 901, a buoyancy rod 902, and a buoyancy block 903. The left end of the connecting pipe 901 is connected to the collecting cylinder 8. The upper end of the connecting pipe 901 is connected to the buoyancy rod 902, and the lower end of the buoyancy rod 902 is integrally connected to the buoyancy block 903. The connecting pipe 901 has a "U"-shaped structure, and the upper right end of the connecting pipe 901 is higher than the upper surface of the collecting cylinder 8. The outer surface of the buoyancy block 903 is fitted against the inner wall of the connecting pipe 901, and the buoyancy block 903... The upper end of the buoyancy rod 902 connected to the upper end of the force block 903 has a spherical structure. After the oil and gas are separated, the oil drips into the collection cylinder 8 under the action of gravity through the inner wall of the cyclone separator 1 for collection. When there is too much oil in the collection cylinder 8, it generates an upward buoyancy force on the buoyancy block 903, and the buoyancy rod 902 is pushed upward, which makes it easy to remind the staff to drain the oil in the collection cylinder 8 in time for continued use. This is the working process of the filter-type oil and gas separation structure for engine crankcase.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A filter-type oil-gas separation structure for an engine crankcase, comprising a cyclone separator (1), wherein the upper end of the cyclone separator (1) is connected to an exhaust pipe (2), and the upper flange of the exhaust pipe (2) is connected to an air pump (3), and the front end of the air pump (3) is connected to an exhaust pipe (4). The upper end of the collection cylinder (8) is threadedly connected to the lower end of the cyclone separator (1), and the upper left end of the cyclone separator (1) is connected to the air inlet pipe (5). Its features are, Also includes: Anti-reverse box (6), the right end of the anti-reverse box (6) is connected to the air intake pipe (5), and the internal hinge of the anti-reverse box (6) is connected to a baffle (14), and the left end of the anti-reverse box (6) is connected to a connecting pipe (7) through a connecting port (10). Sealing oil valve (9), the upper left end of which is connected to the upper right side wall of the collecting cylinder (8); The filter cover (16) is filled with activated carbon (18), and both the left and right sides of the filter cover (16) are connected to the mounting pipe (15) through the filter screen (17).

2. The filter-type oil-gas separation structure for an engine crankcase according to claim 1, characterized in that, The lower right end of the inner wall of the anti-reverse box (6) has an arc-shaped structure, and the upper and lower ends of the inner wall of the anti-reverse box (6) are fixedly connected to limit blocks (13), and the right side of the limit block (13) is connected to a baffle (14).

3. The filter-type oil-gas separation structure for an engine crankcase according to claim 1, characterized in that, A limiting rod (11) is connected through the baffle (14), and a spring (12) is sleeved on the outer surface of the limiting rod (11). The baffle (14) forms a sliding structure on the limiting rod (11).

4. The filter-type oil-gas separation structure for an engine crankcase according to claim 1, characterized in that, The front end of the exhaust pipe (4) is connected to the mounting pipe (15) through a flange, and the filter cover (16) connected on the mounting pipe (15) is a hollow hemispherical structure, and the filter cover (16) is fixed to the filter cover (16) by bolts to form a hollow spherical structure.

5. The filter-type oil-gas separation structure for an engine crankcase according to claim 1, characterized in that, The sealing oil valve (9) includes a connecting pipe (901), a buoyancy rod (902) and a buoyancy block (903). The left end of the connecting pipe (901) is connected to the collection cylinder (8). The upper end of the connecting pipe (901) is connected to the buoyancy rod (902), and the lower end of the buoyancy rod (902) is integrally connected to the buoyancy block (903).

6. The filter-type oil-gas separation structure for an engine crankcase according to claim 5, characterized in that, The connecting pipe (901) has a "U" shaped structure, and the upper right end of the connecting pipe (901) is higher than the upper end of the collecting cylinder (8).

7. A filter-type oil-gas separation structure for an engine crankcase according to claim 5, characterized in that, The outer surface of the buoyancy block (903) is fitted to the inner wall of the connecting pipe (901), and the upper end of the buoyancy rod (902) connected to the upper end of the buoyancy block (903) has a spherical structure.

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