Crankcase ventilation device capable of reducing smoke exhaust

Abstract

The utility model discloses a crankcase ventilation device capable of reducing smoke exhaust, belongs to the technical field of engine breathing devices, and solves the problem that the smoke exhaust amount of an existing crankcase is too large. The ventilation device comprises an oil-gas separator driven by engine oil, an air inlet pipe is arranged at an air inlet of the oil-gas separator, the end, away from the oil-gas separator, of the air inlet pipe is communicated with a crankcase, an oil inlet pipe is arranged at the bottom of the oil-gas separator, and high-pressure engine oil used for driving the oil-gas separator to rotate is arranged in the oil inlet pipe. An oil outlet pipe is arranged at the bottom of the oil-gas separator, one end, far away from the oil-gas separator, of the oil outlet pipe is communicated with an oil pan, a first exhaust pipe communicated with the oil-gas separator is arranged in the middle of the oil-gas separator, and the first exhaust pipe is communicated with an air inlet of an air compressor on an engine. According to the crankcase ventilation device capable of reducing smoke exhaust, the smoke exhaust amount of the crankcase is reduced, and the surrounding air quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine breathing devices, in particular to a crankcase ventilation device capable of reducing exhaust smoke. Background Art

[0002] With the development of diesel engine technology and increasingly stringent emission regulations, existing diesel engine technology has been facing more severe challenges. Reducing diesel engine emissions has always been the goal pursued by major manufacturers.

[0003] One of the effective ways to reduce the smoke exhaust of the crankcase is to install a crankcase ventilation device. The existing conventional crankcase ventilation device has an external exhaust pipe, which causes the oil smoke mixture produced by the crankcase to be discharged into the atmosphere of the application environment during the operation of the diesel engine, resulting in excessive smoke exhaust in most indoor application environments and increasing the engine's exhaust volume, polluting the surrounding air environment, and failing to meet the requirements for reducing diesel engine emissions. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a crankcase ventilation device for reducing smoke exhaust in view of the above-mentioned deficiencies in the prior art, thereby reducing the smoke exhaust volume of the crankcase and effectively improving the surrounding air quality, and has the characteristics of wide application range and strong practicality.

[0005] The technical solution adopted by the utility model is: a crankcase ventilation device for reducing smoke exhaust, including an oil-gas separator driven by engine oil, an air inlet of the oil-gas separator is provided with an air inlet pipe, one end of the air inlet pipe away from the oil-gas separator is connected to the crankcase, an oil inlet pipe is provided at the bottom of the oil-gas separator, high-pressure engine oil for driving the oil-gas separator to rotate is provided in the oil inlet pipe, an oil outlet pipe is provided at the bottom of the oil-gas separator, one end of the oil outlet pipe away from the oil-gas separator is connected to the oil pan, a first exhaust pipe connected to the oil-gas separator is provided in the middle of the oil-gas separator, the first exhaust pipe is connected to the air inlet of the compressor on the engine, and a separation device for secondary separation of smoke is provided on the first exhaust pipe.

[0006] As a further improvement, the separation device includes a separation tube and multiple oil-gas separation plates. The first exhaust pipe is arranged vertically. The oil-gas separation plate is a vortex structure. Multiple oil-gas separation plates are installed in a spiral shape on the inner wall of the separation tube. The upper end of the separation tube is connected to the first exhaust pipe, and the lower end of the separation tube is provided with an oil return exhaust assembly.

[0007] Furthermore, the oil return exhaust assembly includes a connecting pipe, a second exhaust pipe, an oil storage pipe and an oil return pipe, the connecting pipe is connected to the separation pipe, the second exhaust pipe is obliquely arranged on the middle side of the separation pipe and is connected thereto, the oil storage pipe is connected to the lower end of the connecting pipe, the oil storage pipe is connected to the oil outlet pipe through the oil return pipe, and a solenoid valve is provided at the lower end of the oil storage pipe.

[0008] Furthermore, the oil-gas separation plates are installed in the same direction, and the concave surfaces are all facing the air inlet of the separation tube.

[0009] Furthermore, a plurality of fixing seats are provided on the oil inlet pipe, and the fixing seats are connected to the engine frame via locking bolts.

[0010] Furthermore, a pipe joint is provided at one end of the oil inlet pipe, and the pipe joint is connected to the oil pump.

[0011] Furthermore, the oil inlet pipe is provided with a supercharger for increasing the oil pressure.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model discloses a crankcase ventilation device for reducing exhaust smoke. The mixed oil and gas generated in the crankcase enters the oil-gas separator from the intake pipe. The oil-gas separator rotates under the driving force of the high-pressure engine oil in the oil intake pipe. The centrifugal force generated separates the oil and gas in the mixed oil and gas. The separated oil returns to the oil pan of the engine through the oil outlet pipe, so as to realize energy recovery and reduce oil consumption. The separated smoke flows to the separation device through the first exhaust pipe. The smoke is subjected to secondary separation when passing through a plurality of oil-gas separation plates. The smoke after the secondary separation reaches the compressor inlet through the second exhaust pipe and then enters the engine's intake system through the compressor. , and finally enters the combustion chamber to participate in combustion and work, and then is discharged from the exhaust system. By separating the mixed gas and then burning it, the exhaust volume is effectively reduced, thereby reducing emissions and optimizing the environment. At the same time, during the secondary separation, the oil in the flue gas will condense into liquid droplets on the oil-gas separation plate and settle into the oil storage pipe by gravity. When the solenoid valve is opened, it flows through the return oil pipe to the oil outlet pipe, and then flows back to the oil pan through the oil outlet pipe, thereby realizing secondary recovery. Through this device, the exhaust volume can be reduced while the fuel can be efficiently recovered, which effectively reduces environmental pollution and reduces operating costs. It has the characteristics of strong practicality and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0017] Among them: 1-oil-gas separator, 2-separation device, 3-oil return exhaust assembly, 4-intake pipe, 5-oil inlet pipe, 6-oil outlet pipe, 7-first exhaust pipe, 8-supercharger, 9-fixed seat, 10-pipe joint, 21-separation pipe, 22-oil-gas separation plate, 31-connecting pipe, 32-oil storage pipe, 33-solenoid valve, 34-oil return pipe, 35-second exhaust pipe. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0019] See also Figure 1-2 As shown, a crankcase ventilation device for reducing exhaust smoke of the utility model comprises an oil-gas separator 1 driven by engine oil, an air inlet of the oil-gas separator 1 is provided with an air inlet pipe 4, one end of the air inlet pipe 4 away from the oil-gas separator 1 is connected with the crankcase, an oil inlet pipe 5 is provided at the bottom of the oil-gas separator 1, and high-pressure engine oil for driving the oil-gas separator 1 to rotate is provided in the oil inlet pipe 5, an oil outlet pipe 6 is provided at the bottom of the oil-gas separator 1, one end of the oil outlet pipe 6 away from the oil-gas separator 1 is connected with the oil pan, a first exhaust pipe 7 connected thereto is provided at the middle of the oil-gas separator 1, the first exhaust pipe 7 is connected with the air inlet of the compressor on the engine, a separation device 2 for secondary separation of the smoke is provided on the first exhaust pipe 7, the mixed oil and gas generated in the crankcase enters the oil-gas separator 1 from the air inlet pipe 4, the oil-gas separator 1 rotates under the drive of the high-pressure engine oil in the oil inlet pipe 5, the centrifugal force generated separates the oil and gas in the mixed oil and gas, and the separated oil passes through the oil outlet pipe 6 returns to the oil pan of the engine, realizing energy recovery and reducing fuel consumption. The separated flue gas flows into the separation device 2 through the first exhaust pipe 7. The flue gas undergoes secondary separation when passing through multiple oil-gas separation plates 22. The flue gas after secondary separation passes through the second exhaust pipe 35 before reaching the compressor inlet, enters the engine's intake system through the compressor, and finally enters the combustion chamber to participate in combustion and work, and then is discharged from the exhaust system. By separating and then burning the mixed gas, the exhaust volume is effectively reduced, thereby reducing emissions and optimizing the environment. At the same time, during the secondary separation, the oil in the flue gas will condense into liquid droplets on the concave surface of the oil-gas separation plate 22, and settle into the oil storage pipe 32 by gravity. When the solenoid valve 33 is opened, it flows into the oil outlet pipe 6 through the return oil pipe 34, and flows back to the oil pan through the oil outlet pipe 6, thereby realizing secondary recovery. Through this device, the exhaust volume can be reduced while the fuel can be efficiently recovered, effectively reducing environmental pollution and reducing operating costs.

[0020] Specifically, the separation device 2 includes a separation tube 21 and a plurality of oil-gas separation plates 22. The first exhaust pipe 7 is arranged vertically. The oil-gas separation plate is a vortex structure. The plurality of oil-gas separation plates 22 are installed in a spiral shape on the inner wall of the separation tube 21. The upper end of the separation tube 21 is connected to the first exhaust pipe 7. The lower end of the separation tube 21 is provided with an oil return exhaust assembly 3. The oil-gas separation plate 22 with a vortex structure increases the surface area and the contact area with the mixed gas, thereby enhancing the separation effect and can cool the mixed gas to a certain extent. The plurality of oil-gas separation plates 22 are arranged in a spiral shape in the separation tube 21 to extend the passage time of the gas, so that the oil-gas separation plate 22 can absorb more oil.

[0021] Preferably, the oil return exhaust assembly 3 includes a connecting pipe 31, a second exhaust pipe 35, an oil storage pipe 32 and an oil return pipe 34. The connecting pipe 31 is connected to the separation pipe 21, the second exhaust pipe 35 is obliquely arranged on the middle side of the separation pipe 21 and connected thereto, the oil storage pipe 32 is connected to the lower end of the connecting pipe 31, and the oil storage pipe 32 is connected to the oil outlet pipe through the oil return pipe 34. A solenoid valve 33 is provided at the lower end of the oil storage pipe 32. The flue gas after secondary separation passes through the second exhaust pipe 35 before reaching the compressor inlet, enters the engine's intake system through the compressor, and finally enters the combustion chamber to participate in combustion and work, and is then discharged from the exhaust system. By separating and then burning the mixed gas, the exhaust volume is effectively reduced, thereby reducing emissions and optimizing the environment. When a certain amount of oil is stored in the oil storage pipe 32, the solenoid valve 33 is opened to allow the oil in the oil storage pipe 32 to flow back to the oil pan, thereby achieving secondary recovery.

[0022] Furthermore, the oil-gas separation plates 22 are installed in the same direction, and the concave surfaces are all facing the air inlet of the separation tube 21, so that during the secondary separation, the oil in the flue gas will condense into liquid droplets on the concave surface of the oil-gas separation plate 22 and settle into the oil storage pipe 32 by gravity.

[0023] Furthermore, a plurality of fixing seats 9 are provided on the oil inlet pipe 5, and the fixing seats 9 are connected to the engine frame through locking bolts. The oil inlet pipe 5 is installed on the engine frame through the fixing seats 9, which plays a fixing role and effectively prevents the oil inlet pipe 5 from bending and falling.

[0024] Furthermore, a pipe joint 10 is provided at one end of the oil inlet pipe 5, and the pipe joint 10 is connected to the oil pump, so that the oil inlet pipe 5 can be quickly connected to the oil pump in a narrow space.

[0025] Furthermore, a supercharger 8 for increasing the oil pressure is provided on the oil inlet pipe 5, which plays a role of secondary supercharging of the oil. When the engine runs at high speed, it can be turned on to increase the power of the oil-gas separator 1.

[0026] When a crankcase ventilation device for reducing exhaust smoke of the present embodiment is in use, the mixed oil and gas generated in the crankcase enters the oil-gas separator 1 from the intake pipe 4, and the oil-gas separator 1 rotates under the drive of the high-pressure engine oil in the oil inlet pipe 5, and the centrifugal force generated separates the oil and gas in the mixed oil and gas, and the separated oil returns to the oil pan of the engine through the oil outlet pipe 6, so as to realize energy recovery and reduce fuel consumption, and the separated smoke flows into the separation device 2 through the first exhaust pipe 7, and the smoke is subjected to secondary separation when passing through multiple oil-gas separation plates 22, and the smoke after secondary separation reaches the compressor inlet through the second exhaust pipe 35, and enters the compressor through the compressor. The intake system of the engine finally enters the combustion chamber to participate in combustion and work, and then is discharged from the exhaust system. By separating the mixed gas and then burning it, the exhaust volume is effectively reduced, thereby reducing emissions and optimizing the environment. At the same time, during the secondary separation, the oil in the flue gas will condense into liquid droplets on the concave surface of the oil-gas separation plate 22, and settle into the oil storage pipe 32 by gravity. When the solenoid valve 33 is opened, it flows to the oil outlet pipe 6 through the return oil pipe 34, and flows back to the oil pan through the oil outlet pipe 6, thereby realizing secondary recovery. Through this device, while reducing the exhaust volume, it can also efficiently recover fuel, effectively reducing environmental pollution and reducing operating costs. The utility model is a crankcase ventilation device for reducing exhaust, which reduces the exhaust volume of the crankcase, effectively improves the surrounding air quality, and has the characteristics of wide application range and strong practicality.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A crankcase ventilation device for reducing exhaust smoke, characterized in that: The invention comprises an oil-gas separator (1) driven by engine oil, wherein an air inlet of the oil-gas separator (1) is provided with an air inlet pipe (4), one end of the air inlet pipe (4) away from the oil-gas separator (1) is connected to a crankcase, an oil inlet pipe (5) is provided at the bottom of the oil-gas separator (1), and high-pressure engine oil for driving the oil-gas separator (1) to rotate is provided in the oil inlet pipe (5), an oil outlet pipe (6) is provided at the bottom of the oil-gas separator (1), one end of the oil outlet pipe (6) away from the oil-gas separator (1) is connected to an oil pan, a first exhaust pipe (7) connected to the oil-gas separator (1) is provided in the middle of the oil-gas separator (1), the first exhaust pipe (7) is connected to an air inlet of a compressor on an engine, and a separation device (2) for secondary separation of flue gas is provided on the first exhaust pipe (7).

2. A crankcase ventilation device for reducing exhaust smoke according to claim 1, characterized in that: The separation device (2) comprises a separation tube (21) and a plurality of oil-gas separation plates (22); the first exhaust pipe (7) is arranged vertically; the oil-gas separation plates are of a vortex structure; the plurality of oil-gas separation plates (22) are installed in a spiral shape on the inner wall of the separation tube (21); the upper end of the separation tube (21) is connected to the first exhaust pipe (7); and the lower end of the separation tube (21) is provided with an oil return exhaust assembly (3).

3. A crankcase ventilation device for reducing exhaust smoke according to claim 2, characterized in that: The oil return exhaust assembly (3) comprises a connecting pipe (31), a second exhaust pipe (35), an oil storage pipe (32) and an oil return pipe (34); the connecting pipe (31) is connected to the separation pipe (21); the second exhaust pipe (35) is arranged obliquely on one side of the middle of the separation pipe (21) and is connected thereto; the oil storage pipe (32) is connected to the lower end of the connecting pipe (31); the oil storage pipe (32) is connected to the oil outlet pipe through the oil return pipe (34); and a solenoid valve (33) is provided at the lower end of the oil storage pipe (32).

4. A crankcase ventilation device for reducing exhaust smoke according to claim 2, characterized in that: The oil-gas separation plates (22) are installed in the same direction, and the concave surfaces are all facing the air inlet of the separation tube (21).

5. A crankcase ventilation device for reducing exhaust smoke according to claim 1, characterized in that: The oil inlet pipe (5) is provided with a plurality of fixing seats (9), and the fixing seats (9) are connected to the engine frame via locking bolts.

6. A crankcase ventilation device for reducing exhaust smoke according to claim 1, characterized in that: One end of the oil inlet pipe (5) is provided with a pipe joint (10), and the pipe joint (10) is connected to the oil pump.

7. A crankcase ventilation device for reducing exhaust smoke according to claim 1, characterized in that: The oil inlet pipe (5) is provided with a pressure booster (8) for increasing the oil pressure.

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