CN215256392U

CN215256392U - Oil-gas separator of engine

Info

Publication number: CN215256392U
Application number: CN202120263344.7U
Authority: CN
Inventors: 景学明
Original assignee: Hebei Yongke Automation Equipment Co ltd
Current assignee: Hebei Yongke Automation Equipment Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-12-21
Anticipated expiration: 2031-01-30

Abstract

The utility model provides an engine oil-gas separation machine, including upper and lower fixed motor cover and separating centrifuge shell, be fixed with the motor in the motor cover, the separating centrifuge main shaft is connected to the output of motor, be fixed with the separation blade on the separating centrifuge main shaft, the blade angle tilt up of separation blade, be equipped with the air inlet that is used for connecting the export of crankcase oil gas on the separating centrifuge shell, an oil return opening for connecting engine intake pipe gas vent and being used for connecting the crankcase, the oil return opening is located the bottom of separating centrifuge shell, the gas vent is located the upper portion of separating centrifuge shell, the air inlet is located the lower part of separating centrifuge shell, gas vent department installs the relief valve, install the relief valve spring between gas vent and the relief valve. The utility model discloses an engine oil-gas separation machine becomes initiative separation oil gas by passive filtration separation, is high separation rate, long-life, non-maintaining electrodynamic type separating centrifuge, can satisfy the crankcase oil-gas separation needs under the big compression ratio condition of following diesel oil common rail engine now.

Description

Oil-gas separator of engine

Technical Field

The utility model relates to the technical field of engines, specifically an engine oil-gas separator.

Background

At present, only passive oil-gas separation is carried out on a diesel common rail engine crankcase, the passive structure is simple, the oil-gas separation requirement of the diesel engine crankcase with a large compression ratio cannot be met, and the increasingly severe environment-friendly requirement cannot be met.

The prior art adopts the method that the oil gas is cooled by prolonging the oil gas passing time, the cooled oil flows back and forth into the crankcase by the self gravity, or the particles of the oil flow back into the crankcase by attaching to the filter element when passing through the filter element by a filtering method, and the common defects of the oil cooling method and the filter element are that the oil flows back into the crankcase by the weight generated by the oil after being cooled, and the efficiency is seriously low after the temperature is high or the time is long. With the increasing improvement of engine technology, the traditional oil-gas separation technology can not meet the current technical and environmental requirements more and more, and a maintenance-free oil-gas separation device with high separation rate and long service life is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high separation rate, long-life, non-maintaining engine oil gas separating centrifuge.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an engine oil-gas separation machine, including upper and lower fixed motor cover and separating centrifuge shell, be fixed with the motor in the motor cover, the separating centrifuge main shaft is connected to the output of motor, be fixed with the separation blade on the separating centrifuge main shaft, the blade angle tilt up of separation blade, be equipped with the air inlet that is used for connecting the export of crankcase oil gas on the separating centrifuge shell, be used for connecting the engine intake pipe gas vent and be used for connecting the oil return opening of crankcase, the oil return opening is located the bottom of separating centrifuge shell, the gas vent is located the upper portion of separating centrifuge shell, the air inlet is located the lower part of separating centrifuge shell, gas vent department installs the relief valve, install the relief valve spring between gas vent and the relief valve, thereby the relief valve can inwards move the shutoff gas vent, be equipped with the oil duct on the inner wall of separating centrifuge shell, the oil duct communicates to the oil return opening.

Preferably, the motor comprises a motor rotor and a motor stator, and the motor rotor is fixedly connected with the main shaft of the separator.

Preferably, the motor is a high-speed brushless direct current motor, and the rotating speed of the main shaft of the separator is 12000 r/min.

Preferably, the separation blade comprises 70 blades, and a gap of 0.6mm is formed between adjacent blades.

Preferably, the inclination angle of the blade is 30 degrees.

Preferably, the bottom of the separator shell is provided with an isolation rubber gasket capable of plugging and opening an oil return port.

The utility model has the advantages that: the utility model discloses an engine oil-gas separation machine becomes initiative separation oil gas by passive filtration separation, is high separation rate, long-life, non-maintaining electrodynamic type separating centrifuge, can satisfy the crankcase oil-gas separation needs under the big compression ratio condition of following diesel oil common rail engine now.

Drawings

FIG. 1 is a schematic structural view of an engine oil-gas separator of the present invention;

in the figure: 1-motor cover, 2-upper bearing, 3-motor stator, 4-motor rotor, 5-motor base, 6-separator shell, 7-separator spindle, 8-separation blade, 9-exhaust port, 10-safety valve spring, 11-safety valve, 12-pressure plate, 13-valve cover, 14-lower bearing, 15-air inlet, 16-isolation rubber pad and 17-oil return port.

Detailed Description

The technical solution of the present invention will be described in detail by the following specific examples.

As shown in figure 1, an engine oil-gas separator comprises a motor cover 1 and a separator shell 6 which are fixed up and down, wherein a motor is fixed in the motor cover 1, the output end of the motor is connected with a separator spindle 7, a separation blade 8 is fixed on the separator spindle 7, the blade angle of the separation blade 8 is inclined upwards, an air inlet 15 used for connecting an oil-gas outlet of a crankcase, an air outlet 9 used for connecting an engine air inlet pipe and an oil return port 17 used for connecting the crankcase are arranged on the separator shell 6, the oil return port 17 is arranged at the bottom end of the separator shell 6, an air outlet 9 is arranged at the upper part of the separator shell 6, the air inlet 15 is arranged at the lower part of the separator shell 6, a safety valve 11 is arranged at the air outlet 9, a safety valve spring 10 is arranged between the air outlet 9 and the safety valve 11, the safety valve 11 can move inwards to block the air outlet 9, an oil duct is arranged on the inner wall of the separator shell 6, the oil passage communicates to the oil return port 17.

In this embodiment, the motor includes a motor rotor 4 and a motor stator 3, and the motor rotor 4 is fixedly connected with a separator spindle 7. The motor is a high-speed direct current brushless motor, the rotating speed of the separator main shaft 7 is 12000 r/min, the top end and the bottom end of the separator main shaft 7 are respectively connected with an upper bearing 2 and a lower bearing 14, and the upper bearing 2 and the lower bearing 14 are high-speed bearings.

The separation blade 8 comprises 70 blades, a gap of 0.6mm is reserved between adjacent blades, and the inclination angle of the blades is 30 degrees. Each blade is provided with six ribs.

A pressure plate 12 is arranged at the exhaust port 9 between the safety valve spring 10 and the safety valve 11, a valve cover 13 is arranged outside the safety valve 11, and the valve cover 13 is fixedly arranged on the separator shell 6.

The bottom of the separator shell 6 is provided with an isolation rubber pad 16 which can seal and open an oil return port 17.

The working principle of the utility model is as follows:

the working process of the high-speed motor is as follows: when the separator works, the motor stator 3 is electrified, the motor stator 3 drives the motor rotor 4 to rotate at a high speed after the electrification, and the motor rotor 4 drives the separator spindle 7 and the separation blades 8 to rotate together at a high speed.

Oil gas working process: the oil-gas separator is installed to be higher than the oil level of a crankcase, an oil-gas outlet of the crankcase is connected with a metal hose for the oil-gas separator and is connected to an air inlet 15, oil gas enters the oil-gas separator from the air inlet 15, a main shaft 7 of the separator drives separation blades 8 to rotate, gas after the oil gas enters the blades rotates at an accelerated speed under the centrifugal action, the gas rotates at a high speed and rises to an air outlet 9 due to the fact that the angles of the blades incline upwards, the air outlet 9 is connected with an air inlet pipe of an engine through the hose, and the gas enters an air inlet manifold of the engine.

Oil drop particles are thrown onto the inner wall of the separator shell 6 due to high-speed operation, oil flows down to the upper part of the oil return opening 17 along an oil passage on the inner wall, when the oil gravity reaches a certain value, the isolating rubber pad 16 moves downwards to open the oil return opening 17, and the oil enters the crankcase again. The oil-gas separator completes a working cycle.

The working process of the safety valve is as follows: when the negative pressure generated by the crankcase is larger than the force of the safety valve spring 10, the safety valve spring 10 drives the safety valve 11 to move due to compression, and the safety valve 11 pushes against the exhaust port 9 to cut off gas to be exhausted and close the whole separation system.

The oil-gas separator is maintenance-free, long in service life and high in separation efficiency, is suitable for oil-gas separation of diesel engine crank cases with different discharge capacities, and is a traditional passive updating product.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations without creative efforts are still within the scope of the present invention.

Claims

1. The utility model provides an engine oil gas separating centrifuge which characterized in that: the oil-gas separator comprises a motor cover and a separator shell which are fixed up and down, a motor is fixed in the motor cover, an output end of the motor is connected with a main shaft of the separator, separation blades are fixed on the main shaft of the separator, the blade angle of each separation blade inclines upwards, an air inlet used for being connected with an oil-gas outlet of a crankcase is formed in the separator shell, an oil return port used for being connected with an air outlet of an engine air inlet pipe and a crankcase is formed in the separator shell, the oil return port is located at the bottom end of the separator shell, the air outlet is located at the upper portion of the separator shell, the air inlet is located at the lower portion of the separator shell, a safety valve is installed at the air outlet, a safety valve spring is installed between the air outlet and the safety valve, the safety valve can move inwards to block the air outlet, an oil duct is formed in the inner wall of the separator shell, and the oil duct is communicated to the oil return port.

2. The engine oil-gas separator according to claim 1, wherein: the motor comprises a motor rotor and a motor stator, and the motor rotor is fixedly connected with the main shaft of the separator.

3. The engine oil-gas separator according to claim 1 or 2, wherein: the motor is a high-speed direct current brushless motor, and the rotating speed of the main shaft of the separator is 12000 r/min.

4. The engine oil-gas separator according to claim 1, wherein: the separating blades comprise 70 blades, and a gap of 0.6mm is reserved between every two adjacent blades.

5. The engine oil-gas separator according to claim 1 or 4, wherein: the angle of inclination of the blades is 30 degrees.

6. The engine oil-gas separator according to claim 1, wherein: and an isolation rubber pad capable of plugging and opening an oil return port is arranged at the bottom of the separator shell.