Ventilation device for closed crankcase of high-power engine

Abstract

The utility model relates to the technical field of high-power engines, and discloses a high-power engine closed crankcase ventilation device, which comprises an oil-gas separation mechanism, a gas inlet pipe, a second valve and a discharge pipe, the gas inlet pipe is assembled outside the oil-gas separation mechanism, the second valve is assembled at the bottom of the oil-gas separation mechanism, and the discharge pipe is assembled at the bottom of the second valve. A bent pipe is assembled on the right side of the oil-gas separation mechanism, a first valve is assembled in the bent pipe, and a locking mechanism is assembled outside the first valve. According to the closed crankcase ventilation device of the high-power engine, the situation that due to the fact that ventilation cannot be conducted in time, the pressure of an engine crankcase is high, and use safety of the engine is affected is avoided, through the additionally-arranged locking mechanism, the position of the valve rod is automatically locked when air closing and ventilation are conducted through the valve rod control device, and the safety of the engine is improved. And the situation that the valve rod is driven by external reasons or gas to rotate, device control fails, and the use safety of an engine is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -power engine technical field, concretely is a kind of high -power engine closed crankcase ventilation device. BACKGROUND

[0002] Current engine is largely applied in ship and locomotive market, and provides power for equipment. During the operation of engine, with the blow-by of combustion chamber and the evaporation of crankcase lubricating oil, the pressure inside the crankcase will gradually increase, so high-power engine is designed with breather pipe to release the pressure of crankcase. With the expansion of market, the application scene of engine is more and more complex, and the use environment of part of products requires that engine needs to close crankcase breather and isolate from the outside world in special environment. At this time, the crankcase ventilation needs to be properly treated to avoid the high pressure of engine crankcase due to the failure to ventilate in time, which affects the use safety of engine.

[0003] Therefore, there is an urgent need for a high-power engine closed crankcase ventilation device. INVENTION CONTENTS

[0004] (I) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a high-power engine closed crankcase ventilation device to solve the above technical problems.

[0006] (II) technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a high-power engine closed crankcase ventilation device, comprising: oil-gas separation mechanism, intake pipe, second valve and discharge pipe, the intake pipe is assembled outside the oil-gas separation mechanism, the second valve is assembled at the bottom of the oil-gas separation mechanism, the discharge pipe is assembled at the bottom of the second valve, the right side of the oil-gas separation mechanism is equipped with elbow pipe, the inside of the elbow pipe is equipped with first valve, and the outside of first valve is equipped with locking mechanism.

[0008] The locking mechanism comprises pressing plate and lock disc, both ends of the pressing plate are connected with assembly plate through bearing with seat, the bottom of the pressing plate is equipped with spring, the bottom of the pressing plate is equipped with lock rod, and the lock rod is inserted into the top of the lock disc.

[0009] Preferably, the top of the first valve is equipped with valve rod, and the both ends of the top of the valve rod are connected with spring and assembly plate respectively, and the valve rod can support the locking mechanism.

[0010] Preferably, the bottom of the pressing plate is equipped with pull rope, and the pull rope is connected with the lock rod, so that the transmission effect of the pressing plate on the lock rod can be improved.

[0011] Preferably, the top of the lock disc is uniformly provided with a clamping groove, and the clamping groove is in sliding connection with the lock rod, and the clamping groove can limit the positions of the lock rod and the valve rod.

[0012] Preferably, the oil-gas separation mechanism comprises a separation box, and a filter medium is arranged in the separation box; when aerosol oil particles meet in the filter medium, the aerosol oil particles gradually gather together, and the gathering finally forms oil droplets, which are pressed to the downstream of the filter medium; when the oil droplets become larger and larger, the oil droplets fall off from the filter medium and drip to the outer surface of the filter medium; the oil on the outer surface of the filter medium is collected and discharged back to the engine through the air inlet pipe; and the filtered air is introduced into the engine through the second valve, so that the in-cylinder circulation is realized.

[0013] Preferably, the lock disc is connected to the top of the first valve through bolts, and the lock disc can be fixedly arranged on the top of the first valve through the bolts.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a kind of high-power engine closed crankcase breather, with following beneficial effects:

[0016] The high-power engine closed crankcase breather, through the oil-gas separation mechanism, air inlet pipe, second valve, discharge pipe, elbow and first valve, the state of engine can be switched quickly, thereby avoiding the high pressure of engine crankcase due to the failure of timely ventilation, affecting the use safety of engine, and through the locking mechanism, the position of valve rod is automatically locked when the air is closed and ventilated by valve rod control device, to avoid the rotation of valve rod due to external reasons or gas driving, thereby affecting the use safety of engine. ACCURACY

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is the front view of the first valve of the utility model;

[0019] Figure 3 It is the enlarged schematic view of the locking mechanism of the utility model;

[0020] Figure 4 It is the work flow chart of the utility model.

[0021] In the drawing: 1, oil-gas separation mechanism; 2, air inlet pipe; 3, second valve; 4, discharge pipe; 5, elbow; 6, first valve; 61, valve rod; 7, locking mechanism; 71, pressing plate; 72, assembly plate; 73, spring; 74, pull rope; 75, lock rod; 76, lock disc. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0023] The present application provides a technical scheme, please refer to Figure 1 and Figure 2 A high-power engine closed crankcase ventilation device, comprising: an oil-gas separation mechanism 1, an air inlet pipe 2, a second valve 3 and a discharge pipe 4, the oil-gas separation mechanism 1 can separate oil and gas, the air inlet pipe 2 can make the airflow enter, the second valve 3 and the discharge pipe 4 can control the airflow to discharge, the air inlet pipe 2 is assembled on the outside of the oil-gas separation mechanism 1, the second valve 3 is assembled on the bottom of the oil-gas separation mechanism 1, and the discharge pipe 4 is assembled on the bottom of the second valve 3.

[0024] The right side of the oil-gas separation mechanism 1 is provided with an elbow 5, the inside of the elbow 5 is provided with a first valve 6, the first valve 6 is a common three-way ball valve in the prior art and is an L-shaped three-way ball valve, the flow of gas can be controlled by rotating, the top of the first valve 6 is provided with a valve rod 61, the valve rod 61 can control the L-shaped ball body in the first valve 6, the two ends of the top of the valve rod 61 are connected with a spring 73 and an assembly plate 72 respectively, the valve rod 61 can support a locking mechanism 7, and the outside of the first valve 6 is provided with the locking mechanism 7.

[0025] Please refer to Figure 3 and Figure 4 The locking mechanism 7 comprises a pressing plate 71 and a lock disc 76, the pressing plate 71 can control the movement of a lock rod 75 through a pull rope 74, the lock disc 76 can cooperate with the lock rod 75 to limit the rotation of the valve rod 61, the two ends of the pressing plate 71 are both connected with the assembly plate 72 through a bearing with seat, and the assembly plate 72 can support the pressing plate 71.

[0026] The bottom of the pressing plate 71 is provided with the spring 73, the spring 73 can drive the pressing plate 71 to move back after movement, the bottom of the pressing plate 71 is provided with the lock rod 75, the lock rod 75 can be inserted into the inside of the lock disc 76, the lock rod 75 is inserted into the top of the lock disc 76, the bottom of the pressing plate 71 is provided with the pull rope 74, the pull rope 74 is connected with the lock rod 75, and the pull rope 74 can improve the transmission effect of the pressing plate 71 on the lock rod 75.

[0027] The top of the lock disc 76 is uniformly provided with a clamping groove, and the clamping groove is in sliding connection with the lock rod 75. The clamping groove can limit the positions of the lock rod 75 and the valve rod 61. The oil-gas separation mechanism 1 comprises a separation box, and a filter medium is arranged in the separation box. The filter medium can be a common filter medium on the market according to subsequent calculation of the air permeation amount. When the aerosol oil liquid particles meet in the filter medium, they gradually gather together. This gathering eventually forms oil droplets, which are squeezed to the downstream of the filter medium. When the oil droplets become larger and larger, they fall off from the filter medium and drip to the outer surface of the filter medium. The oil liquid on the outer surface of the filter medium is collected and discharged back to the engine body through the air inlet pipe 2. The filtered air is introduced into the engine through the second valve 3 to realize internal circulation. The lock disc 76 is connected to the top of the first valve 6 through bolts, and the lock disc 76 can be fixedly arranged on the top of the first valve 6 through the bolts.

[0028] When the engine works normally, the first valve 6 is rotated. At this time, the crankcase of the engine can normally ventilate with the outside air.

[0029] When the first valve 6 is rotated again, the crankcase ventilation is transmitted to the oil-gas separation mechanism 1. The oil-gas separation mechanism 1 separates the ventilation into oil and gas. The separated lubricating oil is returned to the crankcase through the lower discharge pipe 4, and the separated gas is transmitted to the compressor end of the engine turbocharger and mixed with the combustion air. When the engine exhaust gas flows through the turbocharger turbine end, the turbine rotor is driven to rotate, and the compressor impeller coaxial with the turbine end is also driven to rotate. The intake port of the compressor end of the turbocharger is in a negative pressure vacuum state, and the mixed gas is sucked in. The mixed gas is cooled by the cooler and then transmitted to the engine combustion chamber for complete combustion.

[0030] The added oil-gas separation mechanism 1, air inlet pipe 2, second valve 3, discharge pipe 4, elbow pipe 5 and first valve 6 can quickly switch the state of the engine, thereby avoiding the high pressure of the crankcase of the engine due to the failure to ventilate in time, which affects the safety of the engine. The added locking mechanism 7 automatically locks the position of the valve rod 61 when the valve rod 61 controls the closing and ventilation of the device. The valve rod 61 is prevented from being driven to rotate by external reasons or gas, which causes the failure of the device control and affects the safety of the engine.

[0031] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A high power engine closed crankcase breather device comprising: Oil gas separation mechanism (1), air inlet pipe (2), second valve (3) and exhaust pipe (4), characterized by: the air inlet pipe (2) is equipped with the outside of oil gas separation mechanism (1), the second valve (3) is equipped with the bottom of oil gas separation mechanism (1), the exhaust pipe (4) is equipped with the bottom of second valve (3), the right side of oil gas separation mechanism (1) is equipped with elbow pipe (5), the inside of elbow pipe (5) is equipped with first valve (6), and the outside of first valve (6) is equipped with locking mechanism (7); The locking mechanism (7) comprises a pressing plate (71) and a lock disc (76), both ends of the pressing plate (71) are connected with the assembly plate (72) through the bearing with seat, the bottom of the pressing plate (71) is equipped with the spring (73), the bottom of the pressing plate (71) is equipped with the lock rod (75), and the lock rod (75) is inserted into the top of the lock disc (76).

2. A large power engine closed crankcase breather device according to claim 1, characterized in that: The top of the first valve (6) is equipped with the valve rod (61), and both ends of the top of the valve rod (61) are connected with the spring (73) and the assembly plate (72) respectively.

3. A large power engine closed crankcase breather device according to claim 1, characterized in that: The bottom of the pressing plate (71) is equipped with the pull rope (74), and the pull rope (74) is connected with the lock rod (75).

4. A large power engine closed crankcase breather device according to claim 1, characterized in that: The top of the lock disc (76) is uniformly provided with a clamping groove, and the clamping groove is connected with the lock rod (75) in sliding mode.

5. A large power engine closed crankcase breather device according to claim 1, characterized in that: The oil gas separation mechanism (1) comprises a separation box, and the inside of the separation box is equipped with a filter medium.

6. A large power engine closed crankcase breather device according to claim 1, characterized in that: The top of the lock disc (76) is connected with the first valve (6) by bolts.

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