Oil-gas separator integrated with Venturi valve

Abstract

The invention discloses an oil-gas separator integrated with a Venturi valve, which belongs to the technical field of oil-gas separation of internal combustion engines and comprises a mounting bracket, a separator module is arranged on one side of the mounting bracket, a mounting cavity is formed in the separator module, a separation box is mounted in the mounting cavity, and a driving motor is arranged in the middle of the separation box. A first transmission shaft is installed at the lower end of a driving shaft of the driving motor, a flow guide impeller is installed on the periphery of the first transmission shaft, a first rotating cylinder sleeves the periphery of the flow guide impeller at intervals, a plurality of separation discs sleeve the periphery of the first rotating cylinder in a stacked mode, and a plurality of through holes are formed in the periphery of the first rotating cylinder; the periphery of the separation disc is sleeved with a second rotary drum in a clearance mode, a third rotary drum is arranged above the separation disc, a plurality of first oil guide rings are embedded in the upper portion of the inner circumference of the second rotary drum in a stacked mode, a plurality of second oil guide rings are installed on the periphery of the third rotary drum, engine oil in blow-by gas is recycled as much as possible, and the separation efficiency is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of internal combustion engine oil-gas separation technology, specifically an oil-gas separator with an integrated venturi valve. Background Technology

[0002] During engine operation, high-pressure combustion exhaust gases from the cylinders can seep into the crankcase through the gap between the piston rings and the cylinder walls, creating what's known as "blow-by." Blow-by increases the pressure inside the crankcase, causing oil leaks, increasing engine drag, and the unburned hydrocarbons it contains contribute to environmental pollution. To address this, modern engines are equipped with a crankcase ventilation system. This system uses the vacuum created by the intake system to direct the blow-by gases into the intake manifold and then into the combustion chamber for secondary combustion, thus maintaining pressure balance within the crankcase. However, in turbocharged or supercharged engines, when the supercharger engages, the intake manifold becomes positive pressure, losing its ability to act as a vacuum source. At this point, the system can only rely on the vacuum source provided by the intake pipes before the turbocharger and after the air filter. However, the vacuum level at this point is relatively low, making it difficult to extract blow-by gas from the crankcase under high engine load. This may result in excessively high crankcase pressure, which can easily cause weak points such as the front and rear crankshaft oil seals and valve cover gaskets to be "push open" under high pressure, leading to oil leakage. Furthermore, the excessively pressurized gas will attempt to escape from any possible gaps, increasing the resistance to piston downward movement and consuming engine power.

[0003] Application document CN120557001A discloses an active oil-gas separator, an oil-gas separation method, and an automobile. The active oil-gas separator includes: a housing; a fine separation module, including a drive structure, a separation rotor, and a first bearing. The separation rotor includes a shaft, an impeller, filter cotton, and a bypass valve. The impeller has a first oil-gas passage and a second oil-gas passage, and the bypass valve seals the top opening of the second oil-gas passage. The impeller has an oil baffle, which blocks the path from the second oil-gas passage to the first bearing. There is a third oil-gas passage between the oil baffle and the first bearing. The upper end of the first bearing has a sealing cover, which blocks the path from the third oil-gas passage to the inner cavity of the first bearing.

[0004] Based on the aforementioned patents and existing technologies, current oil-gas separation assemblies often simply use filter components to separate oil droplets from blow-by gases. Due to prolonged use and component aging, their oil-gas separation efficiency continuously decreases, requiring frequent replacement and leading to inconsistent oil replenishment frequencies. Furthermore, current oil-gas separation assemblies often fail to adequately separate oil droplets of various sizes, often failing to capture and confine small droplets effectively, and easily colliding with large droplets to generate smaller droplets, thus hindering further improvement in oil-gas separation efficiency. Moreover, current oil-gas separation assemblies lack protection for their own drive components, making them prone to malfunctions due to overheating or contamination, resulting in a high failure rate and frequent maintenance. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by providing an oil-gas separator with an integrated venturi valve, thereby improving overall working efficiency.

[0006] This invention solves at least one of the following technical problems: (1) Because only simple filtration is performed, the oil-gas separation efficiency often varies, requiring frequent oil changes and excessive oil consumption. (2) Small-diameter oil droplets are difficult to separate, and large oil droplets are prone to collision and generate small oil droplets, making it difficult to improve the separation efficiency; (3) There is no protection for its own drive components, which can easily lead to a high failure rate.

[0007] The objective of this invention can be achieved through the following technical solution: an oil-gas separator with an integrated Venturi valve, comprising a mounting bracket, a separator module on one side of the mounting bracket, an installation cavity inside the separator module, a Venturi tube connected to the top of the separator module, a separation box installed inside the installation cavity, a drive motor in the middle of the separation box, a first transmission shaft installed at the lower end of the drive shaft of the drive motor, a guide impeller installed on the outer periphery of the first transmission shaft, a first rotating cylinder fitted with gaps on the outer periphery of the guide impeller, a plurality of separation discs stacked on the outer periphery of the first rotating cylinder, a plurality of through holes opened on the outer periphery of the first rotating cylinder, a second rotating cylinder fitted with gaps on the outer periphery of the separation discs, a third rotating cylinder above the separation discs, a plurality of first oil guide rings stacked on the upper inner periphery of the second rotating cylinder, a plurality of second oil guide rings installed on the outer periphery of the third rotating cylinder, the first oil guide rings and the second oil guide rings being alternately distributed.

[0008] Preferably, an isolation cylinder is fitted around the outer periphery of the drive motor, an isolation circular plate is installed on the top of the guide impeller, the isolation circular plate is rotatably and sealed to the isolation cylinder and the first rotating cylinder respectively, an isolation cone is installed at the bottom of the guide impeller, the lower end of the isolation cone is connected to an air inlet cylinder, the air inlet cylinder passes through the separation box and is rotatably and sealed to it, and the upper end of the isolation cone is rotatably and sealed to the inner wall of the first rotating cylinder.

[0009] Preferably, a first support ring is fitted around the outer periphery of the air intake cylinder, and a second support ring is fitted around the lower outer periphery of the first rotating cylinder. A plurality of first support columns are fixedly provided between the lower surface of the first support ring and the separation box, and a plurality of second support columns are fixedly provided between the lower surface of the second support ring and the separation box. The air intake cylinder is rotatably connected to the first support ring in a sealed manner, the first rotating cylinder is rotatably connected to both the first and second support rings in a sealed manner, and the second rotating cylinder is rotatably connected to both the second support ring and the inner wall of the separation box in a sealed manner.

[0010] Preferably, a first lower toothed ring is fixedly sleeved on the outer periphery of the intake cylinder, a first lower gear is rotatably sleeved on the first support column, a second lower toothed ring is fixedly sleeved on the lower inner wall of the first rotating cylinder, a third lower toothed ring is fixedly sleeved on the lower outer wall of the first rotating cylinder, a second lower gear is rotatably sleeved on the second support column, and a fourth lower toothed ring is fixedly sleeved on the lower inner wall of the second rotating cylinder. The first lower toothed ring, the first lower gear, and the second lower toothed ring mesh with each other in sequence, and the third lower toothed ring, the second lower gear, and the fourth lower toothed ring mesh with each other in sequence.

[0011] Preferably, several third support columns are installed between the upper end of the isolation cylinder and the separation box, and a transmission sleeve is rotatably sleeved on each third support column. A second transmission shaft is installed on the upper end of the drive shaft of the drive motor, and a first upper gear ring is fixedly sleeved on the second transmission shaft. A second upper gear ring is fixedly sleeved on the upper end of the transmission sleeve. A first upper gear is provided between the first upper gear ring and the second upper gear ring and is driven by meshing with the first upper gear ring. A second upper gear is provided between the second upper gear ring and the third upper gear ring and is driven by meshing with the second upper gear ring. The upper end of the third rotating cylinder is rotatably and sealed to the separation box.

[0012] Preferably, several heat-conducting needle rods are fixedly inserted through the outer periphery of the isolation cylinder, and the heat-conducting needle rods are fixedly connected to the housing of the drive motor. Each transmission sleeve is equipped with a flow-guiding fan blade at the lower part. Several air guide holes are opened in the middle of the upper surface of the separation box and within the projection range of the third rotating cylinder. A heat dissipation guide cover is installed on the top of the separation box. A heat dissipation pipe head is connected to one side of the heat dissipation guide cover. The heat dissipation pipe head is connected to the output end of the automotive intercooler through a heat dissipation air pipe.

[0013] Preferably, a number of oil guide grooves are installed on the lower part of the inner wall of the second rotating drum, and an oil guide chamber is opened on the upper inner side of the second rotating drum. A number of upper partition plates are installed on the upper surface of the first oil guide ring, and a number of lower partition plates are installed on the lower surface of the first oil guide ring. The ends of the upper and lower partition plates and the outer peripheral edge of the first oil guide ring are kept suspended in the oil guide chamber. Each first oil guide ring maintains a gap with the side wall of the second rotating drum through the upper and lower partition plates.

[0014] Preferably, a number of capillary tubes are embedded in the lower inner side of the second rotating drum, and an oil guide groove ring is rotatably connected to the bottom of the second rotating drum. The bottom of the oil guide groove ring is connected to a return oil pipe, which is connected to the automobile return oil circuit. The capillary tubes connect the oil groove of the oil guide rod, the oil guide chamber, and the oil guide groove ring.

[0015] Preferably, a plurality of oil guide needle rods are fixedly connected to the outer peripheral edge of the second oil guide ring, the first oil guide ring is inclined and the inner ring is higher than the outer ring, the second oil guide ring is parallel to the first oil guide ring, and the oil guide needle rods are inclined and point upward towards the separator.

[0016] Preferably, the venturi tube has an inlet chamber, a constriction chamber, a drainage chamber, and an exhaust chamber sequentially formed at its axis. The end of the venturi tube near the inlet chamber is connected to a drive air pipe, and the end of the venturi tube near the exhaust chamber is connected to an outlet air pipe. A mixing valve is embedded on the mounting bracket and located on one side of the separator module. An exhaust pipe head is connected to the upper edge of the separator box. The upper end of the exhaust pipe head is connected to the drainage chamber of the venturi tube, and the lower end of the exhaust pipe head is located between the second and third rotating drums. The lower end of the inlet cylinder is connected to the output end of the mixing valve through a gas bleed pipe.

[0017] The beneficial effects of this invention are: (1) By driving the motor to rotate the first drive shaft and the guide impeller, the guide impeller draws in the blow-by gas along the axial direction of the first drive shaft and guides it evenly in each radial direction of the first drive shaft, so that the blow-by gas passes through each through hole and enters between each separation disc. The first drum rotates at high speed, so that each separation disc generates centrifugal force on the oil droplets attached to its own surface, gathers the oil droplets to the edge and throws them out. The oil droplets quickly attach to the lower part of the inner wall of the second drum and are discharged through the second drum. When the second drum and the third drum rotate, the centrifugal force gathers the oil droplets to the edge and throws them to the upper part of the inner wall of the second drum, and is discharged through the second drum. Then the mixed gas after the oil droplets are separated is input into the venturi tube, and the separated oil is sent back through the return oil circuit, so as to recover the oil in the blow-by gas as much as possible and ensure the separation efficiency. (2) After the large-diameter oil droplets in the gas flow are separated by the separation discs, the small-diameter oil droplets flow with other gases to the space between the second and third rotating drums. Subsequently, they form a labyrinth structure through the staggered distribution of the first and second oil guide rings, causing the small-diameter oil droplets to adhere to the surfaces of the first and second oil guide rings during continuous flow deflection. Guided by the oil guide needle rod, the oil droplets move along the oil guide needle rod to the upper separator. The upper and lower separators maintain a gap between the upper and lower surfaces of the first oil guide ring and the second rotating drum, facilitating the aggregation of oil droplets subjected to centrifugal force and their convergence at the first oil guide ring. The ring located at the edge of the oil guiding chamber and the lower separator located at the end of the oil guiding chamber drip and converge in the oil guiding chamber, so that the oil droplets can move along a fixed path, avoiding re-escape into the gas flow after separation, and further improving the separation rate of oil droplets and gas. Through the oil groove limiting effect of the oil guide rod, the oil droplets will not scatter and splash after collision, but will slide down along the oil groove. Through the centrifugal force experienced by the oil droplets in the oil guide rod and the oil guiding chamber, the converged oil droplets continue to be transported to the oil groove ring through the capillary tube, and finally discharged from the separation box through the return oil pipe. (3) The drive motor rotates the second transmission shaft, and through the meshing transmission of the first upper gear ring, the first upper gear, the second upper gear ring, the second upper gear and the third upper gear ring, the drive motor synchronously drives each duct fan blade and the third rotating drum to rotate rapidly. The low-temperature clean air cooled by the intercooler is introduced into the separation box through the duct fan blades, so that the low-temperature clean air controls the temperature of the drive motor by flowing through the heat-conducting needle rod, so that the drive motor can work more stably for a long time and avoid failure. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the separator module of the present invention; Figure 3 This is a side view of the internal structure of the separator module of the present invention; Figure 4 This is a side view of the internal structure of the separation box of the present invention; Figure 5 for Figure 4 Enlarged view of region A in the middle; Figure 6 for Figure 4 Enlarged view of region B in the middle; In the diagram: 101. Mounting bracket; 102. Separator module; 103. Venturi tube; 104. Drive air pipe; 105. Air outlet pipe; 106. Mixing valve; 201. Mounting cavity; 202. Separator box; 203. Drive motor; 204. Isolation cylinder; 205. First drive shaft; 206. Isolation disc; 207. Guide impeller; 208. Isolation cone; 209. Air inlet cylinder; 210. First rotating cylinder; 211. Through hole; 212. Separation disc; 213. First support ring; 214. Second support ring; 215. First support column; 216. Second support column; 217. First lower gear ring; 218. First lower gear; 219. Second lower gear ring; 220. Second rotating cylinder; 221. Oil guide groove rod; 222. Oil guide chamber; 223. First oil guide ring; 224. Lower separator. 225. Upper separator plate; 226. Oil guide groove ring; 227. Third lower gear ring; 228. Second lower gear; 229. Fourth lower gear ring; 230. Third rotating drum; 231. Second oil guide ring; 232. Oil guide needle rod; 233. Third support column; 234. Transmission sleeve; 235. Second transmission shaft; 236. First upper gear ring; 237. First upper gear; 238. Second upper gear ring; 2 39. Second upper gear; 240. Third upper gear ring; 241. Air guide hole; 242. Drain fan blade; 243. Heat conduction needle rod; 244. Heat dissipation guide cover; 245. Heat dissipation tube head; 246. Vent pipe; 247. Heat dissipation air pipe; 248. Exhaust pipe head; 249. Capillary tube; 250. Oil return pipe; 301. Air inlet chamber; 302. Inlet cavity; 303. Drain chamber; 304. Exhaust chamber. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Please see Figure 1-6As shown: An oil-gas separator with an integrated Venturi valve includes a mounting bracket 101. A separator module 102 is provided on one side of the mounting bracket 101. An installation cavity 201 is opened inside the separator module 102. A Venturi tube 103 is connected to the top of the separator module 102. A separation box 202 is installed inside the installation cavity 201. A drive motor 203 is provided in the middle of the separation box 202. A first transmission shaft 205 is installed at the lower end of the drive shaft of the drive motor 203. A guide impeller 207 is installed on the outer periphery of the first transmission shaft 205. A first rotating cylinder 210 is fitted with gaps. Several separation discs 212 are stacked around the outer periphery of the first rotating cylinder 210. Several through holes 211 are opened around the outer periphery of the first rotating cylinder 210. A second rotating cylinder 220 is fitted with gaps around the outer periphery of the separation discs 212. A third rotating cylinder 230 is provided above the separation discs 212. Several first oil guide rings 223 are stacked and embedded in the upper part of the inner periphery of the second rotating cylinder 220. Several second oil guide rings 231 are installed on the outer periphery of the third rotating cylinder 230. The first oil guide rings 223 and the second oil guide rings 231 are distributed alternately. In this embodiment, suction is generated by the Venturi tube 103 to draw the gas after oil-gas separation from the separator module 102 into the Venturi tube 103 and discharge it to the intake valve of the turbocharged internal combustion engine. This not only delivers more gas to the intake of the turbocharged internal combustion engine, effectively increasing engine power, but also quickly separates the blow-by gas overflowing from the crankcase and other compartments of the engine, controls the air pressure in each compartment, and efficiently recovers the engine oil in the blow-by gas. The drive motor 203 rotates the first drive shaft 205 and the guide impeller 207. The guide impeller 207 draws the blow-by gas along the axial direction of the first drive shaft 205 and guides it evenly in each radial direction of the first drive shaft 205, so that the blow-by gas passes evenly through each through hole 211 and enters between each separation disc 212. The first rotating drum 210 maintains high-speed rotation, causing each separation disc 212 to generate centrifugal force on the oil droplets attached to its surface. The oil droplets are gathered to the edge and thrown out. The oil droplets quickly adhere to the lower inner wall of the second rotating drum 220 and are discharged through the second rotating drum 220. After the large-diameter oil droplets in the blow-by gas are separated by the separation disc 212, the small-diameter oil droplets flow with other gases to the space between the second rotating drum 220 and the third rotating drum 230. Then, through the staggered distribution of the first oil guide ring 223 and the second oil guide ring 231, a labyrinth structure is formed, so that the small-diameter oil droplets adhere to the surface of the first oil guide ring 223 and the second oil guide ring 231 in the continuous flow. When the second rotating drum 220 and the third rotating drum 230 rotate, the oil droplets are gathered to the edge by centrifugal force and thrown to the upper inner wall of the second rotating drum 220 and discharged through the second rotating drum 220. Then, the mixed gas after the oil droplets are separated is input into the venturi tube 103, and the separated oil is sent back through the return oil line, thereby recovering as much oil as possible from the blow-by gas and ensuring separation efficiency.

[0022] An isolation cylinder 204 is fitted around the outer periphery of the drive motor 203. An isolation circular plate 206 is installed on the top of the guide impeller 207. The isolation circular plate 206 is sealed and rotatably connected to the isolation cylinder 204 and the first rotating cylinder 210 respectively. An isolation cone 208 is installed at the bottom of the guide impeller 207. The lower end of the isolation cone 208 is connected to an air inlet 209. The air inlet 209 passes through the separation box 202 and is sealed and rotatably connected to it. The upper end of the isolation cone 208 is sealed and rotatably connected to the inner wall of the first rotating cylinder 210. During operation, the escaping gas flows in through the air inlet 209, and the rotating guide impeller 207 maintains the suction. The isolation disc 206 and the isolation cone 208 ensure that the escaping gas passes through the through hole 211 and enters the separation disc 212 and is separated, thus effectively limiting the flow of the escaping gas.

[0023] A first support ring 213 is fitted around the outer periphery of the air intake cylinder 209, and a second support ring 214 is fitted around the lower outer periphery of the first rotating cylinder 210. A plurality of first support columns 215 are fixedly disposed between the lower surface of the first support ring 213 and the separation box 202, and a plurality of second support columns 216 are fixedly disposed between the lower surface of the second support ring 214 and the separation box 202. The air intake cylinder 209 is rotatably and sealingly connected to the first support ring 213. The first rotating cylinder 210 is rotatably and sealingly connected to both the first support ring 213 and the second support ring 214. The second rotating cylinder 220 is rotatably and sealingly connected to both the second support ring 214 and the inner wall of the separation box 202. The outer periphery of the air pump 209 is fixedly fitted with a first lower toothed ring 217, the first support column 215 is rotatably fitted with a first lower gear 218, the lower inner wall of the first rotating cylinder 210 is fixedly fitted with a second lower toothed ring 219, the lower outer wall of the first rotating cylinder 210 is fixedly fitted with a third lower toothed ring 227, the second support column 216 is rotatably fitted with a second lower gear 228, and the lower inner wall of the second rotating cylinder 220 is fixedly fitted with a fourth lower toothed ring 229. The first lower toothed ring 217, the first lower gear 218 and the second lower toothed ring 219 mesh with each other in sequence, and the third lower toothed ring 227, the second lower gear 228 and the fourth lower toothed ring 229 mesh with each other in sequence. In this embodiment, during operation, the intake cylinder 209 rotates along with the guide impeller 207, driving the first lower gear ring 217 to rotate. Through the transmission of the first lower gears 218, the second lower gear ring 219 is stably driven to rotate, causing the first rotating cylinder 210 and the intake cylinder 209 to rotate in opposite directions. Subsequently, the third lower gear ring 227 drives the second lower gear 228, and then the fourth lower gear ring 229 drives the second rotating cylinder 220 to rotate, causing the second rotating cylinder 220 to rotate in opposite directions to the first rotating cylinder 210. The guide impeller 207... Both the separating disc 212 and the second rotating drum 220 rotate rapidly, so that the blow-by gas continuously undergoes centrifugal force during the oil-gas separation process. This allows the oil droplets adhering to the separation to move smoothly and fully to the lower part of the inner wall of the second rotating drum 220, thereby more fully separating the oil droplets in the blow-by gas. Through the rotation of the guide impeller 207, the blow-by gas is efficiently and quickly drawn into the separator box 202, avoiding insufficient suction at the output end of the separator module 102, which would prevent the blow-by gas from being absorbed, and avoiding excessive pressure in the crankcase, thus better protecting the crankcase.

[0024] Several third support columns 233 are installed between the upper end of the isolation cylinder 204 and the separation box 202. A transmission sleeve 234 is rotatably sleeved on each third support column 233. A second transmission shaft 235 is installed on the upper end of the drive shaft of the drive motor 203. A first upper gear ring 236 is fixedly sleeved on the second transmission shaft 235. A second upper gear ring 238 is fixedly sleeved on the upper end of the transmission sleeve 234. A first upper gear 237 is provided between the first upper gear ring 236 and the second upper gear ring 238, and the transmission is achieved through the meshing of the first upper gear 237. A second upper gear 239 is provided between the second upper gear ring 238 and the third upper gear ring 240, and the transmission is achieved through the meshing of the second upper gear 239. 9. Meshing transmission: The upper end of the third rotating drum 230 is sealed and rotatably connected to the separation box 202. Several heat-conducting needle rods 243 are fixedly inserted through the outer periphery of the isolation cylinder 204. The heat-conducting needle rods 243 are fixedly connected to the housing of the drive motor 203. Each transmission sleeve 234 is equipped with a flow-guiding fan blade 242 at the lower part. Several air guide holes 241 are opened in the middle of the upper surface of the separation box 202 and within the projection range of the third rotating drum 230. A heat dissipation guide cover 244 is installed on the top of the separation box 202. A heat dissipation pipe head 245 is connected to one side of the heat dissipation guide cover 244. The heat dissipation pipe head 245 is connected to the output end of the automotive intercooler through a heat dissipation pipe 247. In this embodiment, the drive motor 203 rotates the second transmission shaft 235. Through the meshing transmission of the first upper gear ring 236, the first upper gear 237, the second upper gear ring 238, the second upper gear 239, and the third upper gear ring 240, the drive motor 203 synchronously drives each guide fan blade 242 and the third rotating drum 230 to rotate rapidly. The guide fan blades 242 introduce the low-temperature clean air cooled by the intercooler into the separation box 202. This allows the low-temperature clean air to control the temperature of the drive motor 203 by flowing through the heat-conducting needle rod 243, making the drive motor 203 work more stably for a long time and avoiding failure. It also generates air pressure, so that the gas separated by the separation disc 212 is subjected to the pressure of the gas with heat carried by the heat-conducting needle rod 243 and mixed with it. Then it enters the labyrinthine oil-gas separation between the third rotating drum 230 and the second rotating drum 220, thereby continuously maintaining a high efficiency of oil-gas separation.

[0025] The lower part of the inner wall of the second rotating drum 220 is equipped with several oil guide groove rods 221. An oil guide chamber 222 is formed on the upper inner side of the second rotating drum 220. Several upper partition plates 225 are installed on the upper surface of the first oil guide ring 223, and several lower partition plates 224 are installed on the lower surface of the first oil guide ring 223. The ends of the upper partition plates 225 and lower partition plates 224, as well as the outer peripheral edge of the first oil guide ring 223, are suspended within the oil guide chamber 222. Each first oil guide ring 22... All 3 are separated from the side wall of the second rotating drum 220 by the upper partition plate 225 and the lower partition plate 224. Several capillary tubes 249 are embedded in the lower inner side of the second rotating drum 220. The bottom of the second rotating drum 220 is rotatably connected to the oil guide groove ring 226. The bottom of the oil guide groove ring 226 is connected to the return oil pipe 250. The return oil pipe 250 is connected to the automobile return oil circuit. The capillary tubes 249 connect the oil groove of the oil guide groove rod 221, the oil guide chamber 222 and the oil guide groove ring 226. In this embodiment, the upper and lower surfaces of the first oil guide ring 223 and the second rotating drum 220 are kept apart by the upper partition plate 225 and the lower partition plate 224. This facilitates the collection of oil droplets subjected to centrifugal force. The droplets fall and collect in the oil guide chamber 222 at the edge of the first oil guide ring 223 located in the oil guide chamber 222 and at the end of the lower partition plate 224 located in the oil guide chamber 222. The oil groove limiter of the oil guide rod 221 prevents the oil droplets from scattering and splashing after collision. Instead, the droplets slide down the oil groove. The centrifugal force experienced by the oil droplets in the oil guide rod 221 and the oil guide chamber 222 causes the collected oil droplets to continue to be transported to the oil groove ring 226 through the capillary tube 249 and finally discharged from the separation box 202 through the return oil pipe 250.

[0026] Several oil guide needle rods 232 are fixedly connected to the outer peripheral edge of the second oil guide ring 231. The first oil guide ring 223 is inclined and the inner ring is higher than the outer ring. The second oil guide ring 231 is parallel to the first oil guide ring 223. The oil guide needle rods 232 are inclined and point upward to the separator 225. During operation, the oil droplets move to the outer edge of the second oil guide ring 231 under centrifugal force. Through the guidance of the oil guide needle rod 232, the oil droplets move along the oil guide needle rod 232 to the upper separator plate 225, thereby enabling the oil droplets to move along a fixed path, avoiding re-escape into the gas flow after separation, and further improving the separation rate of oil droplets and gas.

[0027] The venturi tube 103 has an intake chamber 301, a constriction chamber 302, a drainage chamber 303, and an exhaust chamber 304 sequentially opened at its axis. The end of the venturi tube 103 near the intake chamber 301 is connected to a drive air pipe 104, and the end of the venturi tube 103 near the exhaust chamber 304 is connected to an outlet pipe 105. A mixing valve 106 is embedded on the mounting bracket 101 and located on one side of the separator module 102. An exhaust pipe head 248 is connected to the upper surface edge of the separator box 202. The upper end of the exhaust pipe head 248 is connected to the drainage chamber 303 of the venturi tube 103, and the lower end of the exhaust pipe head 248 is located between the second rotating cylinder 220 and the third rotating cylinder 230. The lower end of the intake cylinder 209 is connected to the output end of the mixing valve 106 through a gas bleed pipe 246. In this embodiment, the mixing valve 106 is connected to the engine crankcase, allowing for timely and flexible adjustment and depressurization of the air pressure within the crankcase. The outflowing mixture is called blow-by gas. The blow-by gas enters the intake cylinder 209 along the blow-by pipe 246 and is separated in the separator 202. It is then guided by the airflow output from the engine turbocharger, which sequentially passes through the intake chamber 301, the intake chamber 302, the guide chamber 303, and the exhaust chamber 304. This reduces the air pressure in the guide chamber 303, allowing the exhaust pipe head 248 to more quickly input the separated gas into the guide chamber 303, where it mixes with the turbocharger's airflow and is then delivered to the valves through the outlet pipe 105. This ensures stable and powerful airflow pressure, fully separates and recovers the engine oil, and allows other components of the blow-by gas to participate in combustion again, thereby improving fuel efficiency, reducing oil consumption, extending the overall service life, and enhancing overall operational stability.

[0028] In summary, by driving the motor 203 to rotate the first drive shaft 205 and the guide impeller 207, the guide impeller 207 draws in the blow-by gas along the axial direction of the first drive shaft 205 and guides it evenly in each radial direction of the first drive shaft 205, so that the blow-by gas passes evenly through each through hole 211 and enters between each separation disc 212. The first rotating drum 210 keeps rotating at high speed, so that each separation disc 212 generates centrifugal force on the oil droplets attached to its own surface, gathers the oil droplets to the edge and throws them out. The oil droplets quickly adhere to the lower part of the inner wall of the second rotating drum 220 and are discharged through the second rotating drum 220. When the second rotating drum 220 and the third rotating drum 230 rotate, the centrifugal force gathers the oil droplets to the edge and throws them to the upper part of the inner wall of the second rotating drum 220 and is discharged through the second rotating drum 220. Then, the mixed gas after the oil droplets are separated is input into the venturi tube 103, and the separated oil is sent back through the oil return line, thereby recovering the oil in the blow-by gas as much as possible and ensuring separation efficiency. After large-diameter oil droplets in the blown gas are separated by the separation disc 212, small-diameter oil droplets flow with other gases to the space between the second rotating drum 220 and the third rotating drum 230. Subsequently, a labyrinth structure is formed by the staggered distribution of the first and second oil guide rings 223 and 231, causing the small-diameter oil droplets to adhere to the surfaces of the first and second oil guide rings 223 and 231 during continuous flow deflection. Guided by the oil guide needle rod 232, the oil droplets move along the rod to the upper separator 225. The upper separator 225 and the lower separator 224 maintain a gap between the upper and lower surfaces of the first oil guide ring 223 and the second rotating drum 220, facilitating the aggregation of oil droplets subjected to centrifugal force in the first rotating drum. The oil guide ring 223 is located at the edge of the oil guide chamber 222 and the lower separator 224 is located at the end of the oil guide chamber 222. The oil droplets drip and collect in the oil guide chamber 222, so that the oil droplets can move along a fixed path, avoiding re-escape into the gas flow after separation, and further improving the separation rate of oil droplets and gas. Through the oil groove limiting effect of the oil guide rod 221, the oil droplets will not scatter and splash after collision, but will slide down along the oil groove. Through the centrifugal force experienced by the oil droplets in the oil guide rod 221 and the oil guide chamber 222, the collected oil droplets continue to be transported to the oil groove ring 226 through the capillary tube 249, and finally discharged from the separation box 202 through the return oil pipe 250. The drive motor 203 rotates the second transmission shaft 235. Through the meshing transmission of the first upper gear ring 236, the first upper gear 237, the second upper gear ring 238, the second upper gear ring 239, and the third upper gear ring 240, the drive motor 203 synchronously drives each guide fan blade 242 and the third rotating drum 230 to rotate rapidly. The guide fan blades 242 introduce the low-temperature clean air cooled by the intercooler into the separation box 202. The low-temperature clean air flows through the heat-conducting needle rod 243 to control the temperature of the drive motor 203, making the drive motor 203 work more stably for a long time and avoiding failure.

[0029] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An oil-gas separator with an integrated venturi valve, characterized in that, The system includes a mounting bracket (101), a separator module (102) on one side of the mounting bracket (101), an installation cavity (201) inside the separator module (102), a venturi tube (103) connected to the top of the separator module (102), a separation box (202) installed inside the installation cavity (201), a drive motor (203) in the middle of the separation box (202), a first transmission shaft (205) installed at the lower end of the drive shaft of the drive motor (203), a guide impeller (207) installed on the outer periphery of the first transmission shaft (205), and a second guide impeller (207) with a gap fitted on the outer periphery of the guide impeller (207). A rotating cylinder (210) has several separation discs (212) stacked around its outer periphery. Several through holes (211) are opened around the outer periphery of the first rotating cylinder (210). A second rotating cylinder (220) is fitted around the outer periphery of the separation discs (212) with gaps. A third rotating cylinder (230) is provided above the separation discs (212). Several first oil guide rings (223) are stacked and embedded in the upper part of the inner periphery of the second rotating cylinder (220). Several second oil guide rings (231) are installed around the outer periphery of the third rotating cylinder (230). The first oil guide rings (223) and the second oil guide rings (231) are staggered.

2. An oil-gas separator with an integrated venturi valve according to claim 1, characterized in that, An isolation cylinder (204) is fitted around the outer periphery of the drive motor (203). An isolation circular plate (206) is installed on the top of the guide impeller (207). The isolation circular plate (206) is sealed and rotatably connected to the isolation cylinder (204) and the first rotating cylinder (210) respectively. An isolation cone (208) is installed at the bottom of the guide impeller (207). The lower end of the isolation cone (208) is connected to an air inlet cylinder (209). The air inlet cylinder (209) passes through the separation box (202) and is sealed and rotatably connected to it. The upper end of the isolation cone (208) is sealed and rotatably connected to the inner wall of the first rotating cylinder (210).

3. An oil-gas separator with an integrated venturi valve according to claim 2, characterized in that, The air inlet cylinder (209) is fitted with a first support ring (213) on its outer periphery, and the lower end of the first rotating cylinder (210) is fitted with a second support ring (214) on its outer periphery. A number of first support columns (215) are fixed between the lower surface of the first support ring (213) and the separation box (202), and a number of second support columns (216) are fixed between the lower surface of the second support ring (214) and the separation box (202). The air inlet cylinder (209) is sealed and rotatably connected to the first support ring (213), the first rotating cylinder (210) is sealed and rotatably connected to the first support ring (213) and the second support ring (214) respectively, and the second rotating cylinder (220) is sealed and rotatably connected to the second support ring (214) and the inner wall of the separation box (202) respectively.

4. An oil-gas separator with an integrated venturi valve according to claim 2, characterized in that, The outer periphery of the air intake cylinder (209) is fixedly fitted with a first lower toothed ring (217), the first support column (215) is rotatably fitted with a first lower gear (218), the lower inner wall of the first rotating cylinder (210) is fixedly fitted with a second lower toothed ring (219), the lower outer wall of the first rotating cylinder (210) is fixedly fitted with a third lower toothed ring (227), the second support column (216) is rotatably fitted with a second lower gear (228), the lower inner wall of the second rotating cylinder (220) is fixedly fitted with a fourth lower toothed ring (229), the first lower toothed ring (217), the first lower gear (218) and the second lower toothed ring (219) mesh with each other in sequence, and the third lower toothed ring (227), the second lower gear (228) and the fourth lower toothed ring (229) mesh with each other in sequence.

5. An oil-gas separator with an integrated venturi valve according to claim 2, characterized in that, Several third support columns (233) are installed between the upper end of the isolation cylinder (204) and the separation box (202). A transmission sleeve (234) is rotatably sleeved on each third support column (233). A second transmission shaft (235) is installed on the upper end of the drive shaft of the drive motor (203). A first upper gear ring (236) is fixedly sleeved on the second transmission shaft (235). A second upper gear ring (238) is fixedly sleeved on the upper end of the transmission sleeve (234). A first upper gear (237) is provided between the first upper gear ring (236) and the second upper gear ring (238) and is driven by meshing through the first upper gear ring (237). A second upper gear (239) is provided between the second upper gear ring (238) and the third upper gear ring (240) and is driven by meshing through the second upper gear ring (239). The upper end of the third rotating cylinder (230) is sealed and rotatably connected to the separation box (202).

6. An oil-gas separator with an integrated venturi valve according to claim 2, characterized in that, Several heat-conducting needle rods (243) are fixedly inserted through the outer periphery of the isolation cylinder (204). The heat-conducting needle rods (243) are fixedly connected to the housing of the drive motor (203). Each transmission sleeve (234) is equipped with a flow-guiding fan blade (242) at the bottom. Several air guide holes (241) are opened in the middle of the upper surface of the separation box (202) and within the projection range of the third rotating cylinder (230). A heat dissipation guide cover (244) is installed on the top of the separation box (202). A heat dissipation pipe head (245) is connected to one side of the heat dissipation guide cover (244). The heat dissipation pipe head (245) is connected to the output end of the automotive intercooler through a heat dissipation pipe (247).

7. An oil-gas separator with an integrated venturi valve according to claim 1, characterized in that, The lower part of the inner wall of the second rotating drum (220) is equipped with several oil guide groove rods (221). The upper inner side of the second rotating drum (220) is provided with an oil guide chamber (222). Several upper partition plates (225) are installed on the upper surface of the first oil guide ring (223). Several lower partition plates (224) are installed on the lower surface of the first oil guide ring (223). The ends of the upper partition plates (225) and the lower partition plates (224) and the outer peripheral edge of the first oil guide ring (223) are all suspended in the oil guide chamber (222). Each first oil guide ring (223) maintains a gap with the side wall of the second rotating drum (220) through the upper partition plates (225) and the lower partition plates (224).

8. An oil-gas separator with an integrated venturi valve according to claim 1, characterized in that, Several capillary tubes (249) are embedded in the lower inner side of the second rotating drum (220). The bottom of the second rotating drum (220) is sealed and rotatably connected to an oil guide groove ring (226). The bottom of the oil guide groove ring (226) is connected to a return oil pipe (250). The return oil pipe (250) is connected to the automobile return oil circuit. The capillary tubes (249) connect the oil groove of the oil guide groove rod (221), the oil guide chamber (222), and the oil guide groove ring (226).

9. An oil-gas separator with an integrated venturi valve according to claim 1, characterized in that, The outer periphery of the second oil guide ring (231) is fixedly connected with a number of oil guide needle rods (232). The first oil guide ring (223) is inclined and the inner ring is higher than the outer ring. The second oil guide ring (231) is parallel to the first oil guide ring (223). The oil guide needle rods (232) are inclined and point upward to the separator (225).

10. An oil-gas separator with an integrated venturi valve according to claim 1, characterized in that, The venturi tube (103) has an intake chamber (301), a constriction chamber (302), a drainage chamber (303), and an exhaust chamber (304) sequentially formed at its axis. One end of the venturi tube (103) near the intake chamber (301) is connected to a drive air pipe (104), and the other end of the venturi tube (103) near the exhaust chamber (304) is connected to an outlet pipe (105). The venturi tube is mounted on the bracket (101) and located on the separator module (102). A mixing valve (106) is embedded on one side. An exhaust pipe head (248) is connected to the upper surface edge of the separation box (202). The upper end of the exhaust pipe head (248) is connected to the drainage chamber (303) of the venturi tube (103). The lower end of the exhaust pipe head (248) is located between the second rotating drum (220) and the third rotating drum (230). The lower end of the air inlet cylinder (209) is connected to the output end of the mixing valve (106) through the gas leakage pipe (246).

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