CN218598250U

CN218598250U - Serial-type oil-gas separation structure

Info

Publication number: CN218598250U
Application number: CN202223232812.8U
Authority: CN
Inventors: 郑晓丰; 王树勇; 马国海; 陈超; 李楠; 唐飞
Original assignee: Ningbo City Yinzhou Delight Technology Co ltd
Current assignee: Ningbo City Yinzhou Delight Technology Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-03-10
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a serial-type oil-gas separation structure, including the engine body, this internal labyrinth oil-gas separation mechanism that is equipped with of engine, its characterized in that: the engine is characterized in that a hollow rotating shaft and a control structure used for controlling the rotation of the hollow rotating shaft are further arranged in the engine body, a first channel communicated with the labyrinth oil-gas separation mechanism is arranged in the hollow rotating shaft, a centrifugal impeller is fixedly connected with an inlet end of the hollow rotating shaft, and a plurality of oil-gas inlets communicated with the first channel are formed in the centrifugal impeller. The utility model provides a serial-type oil-gas separation structure, it is on labyrinth oil-gas separation mechanism's basis, and the centrifugal separating mechanism of series connection one-level utilizes the efficient characteristics of centrifugal separation, promotes engine oil-gas separation efficiency.

Description

Serial-type oil-gas separation structure

Technical Field

The utility model relates to a gasoline engine technical field, concretely relates to serial-type oil-gas separation structure.

Background

During operation of the engine, high-pressure combustible mixture and burned mixture in the combustion chamber more or less blow-by gas is introduced into the crankcase through a gap between the piston group and the cylinder, resulting in blow-by gas. The blow-by gas is composed of unburned fuel gas, water vapor, waste gas and the like, which can raise the liquid level of the engine oil, dilute the emulsified engine oil, reduce the service performance of the engine oil and accelerate the oxidation and the deterioration of the engine oil. Moisture is condensed in engine oil to form oil sludge to block an oil way, and acidic gas in waste gas is mixed into a lubricating oil system to cause corrosion and accelerated wear of parts of an engine; the blow-by gas can also cause the pressure of the crankcase to be too high to damage the sealing of the crankcase, so that the engine oil is leaked and lost; meanwhile, the oil gas (mixture of blow-by gas and engine oil vapor) is not completely separated, the phenomenon of engine oil burning can also be caused, the engine oil is consumed too fast, the lubrication between engine parts can be failed, and the abrasion is aggravated; in order to prevent the over-high pressure of the crankcase, prolong the service life of engine oil, reduce the abrasion of parts of an engine, meet increasingly strict emission requirements and improve the economy, the engine must be provided with a crankcase ventilation system, an oil-gas separation structure is a design key in the crankcase ventilation system, and the service life of the engine is directly influenced by the good and bad oil-gas separation effect.

Traditional gasoline engine oil-gas separation adopts simple one-level labyrinth structure mostly, and oil-gas separation efficiency is on the low side, and the oil-gas separation effect is unsatisfactory, and the machine oil that leads to is rotten easily, burns machine oil, and engine spare part wearing and tearing aggravation wait trouble influences engine life, often can not satisfy the designing requirement.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model discloses mainly solve traditional one-level labyrinth oil-gas separation mechanism separation efficiency and hang down, the oil-gas separation effect is unsatisfactory, and the machine oil that leads to is rotten easily, burns machine oil, and engine parts wearing and tearing aggravation wait trouble influences engine life, provides a serial-type oil-gas separation structure, and it is on labyrinth oil-gas separation mechanism's basis, and the centrifugal separating mechanism of one-level is established ties, utilizes the high characteristics of centrifugal separation efficiency, promotes engine oil-gas separation efficiency.

2. Technical scheme

In order to solve the above problem, the utility model provides a technical scheme does:

the utility model provides a serial-type oil-gas separation structure, includes engine body, this internal labyrinth oil-gas separation mechanism that is equipped with of engine, its characterized in that: this internal hollow rotating shaft that still is equipped with of engine, and be used for control the rotatory control structure of hollow rotating shaft, have in the hollow rotating shaft with the first passageway of labyrinth type oil gas separating mechanism intercommunication, the entrance point of hollow rotating shaft has linked firmly centrifugal impeller, be equipped with on the centrifugal impeller a plurality of with the oil gas import of first passageway intercommunication.

Optionally, this internal camshaft that is equipped with of engine, hollow shaft with hollow shaft sets up with the axial, control structure including link firmly in first gear on the camshaft to and link firmly in the epaxial second gear of hollow shaft, first gear and second gear meshing transmission.

Optionally, the second gear is disposed at an inlet end of the hollow rotating shaft.

Optionally, a bearing cover is arranged in the engine body, and the hollow rotating shaft and the camshaft are rotatably mounted on the bearing cover.

Optionally, a third passage for communicating the first passage with the labyrinth oil-gas separation mechanism is arranged on the bearing cover.

Optionally, a cylinder head cover is arranged on the engine body, and the labyrinth type oil-gas separation mechanism comprises an oil-gas separation labyrinth arranged in the cylinder head cover.

Optionally, a labyrinth cover plate is also included, which is in sealing engagement with the cylinder head cover.

Optionally, the inlet end of the hollow rotating shaft is flared.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) On the basis of the labyrinth oil-gas separation mechanism, a primary centrifugal separation mechanism is connected in series, and the oil-gas separation efficiency of the engine is improved by utilizing the characteristic of high centrifugal separation efficiency.

(2) The hollow rotating shaft (namely, the centrifugal impeller) is driven to rotate by the rotation of the cam shaft, so that the transmission efficiency is high and the structure is compact.

(3) The centrifugal impeller is directly installed on the gear, oil gas enters the labyrinth through the inside of the hollow rotating shaft and the third channel after centrifugal separation, the whole transmission channel has no external pipeline, the structure is simple and compact, and the pressure loss is small.

Drawings

Fig. 1 is a schematic structural diagram of a tandem type oil-gas separation structure provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a control structure in a series oil-gas separation structure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a centrifugal impeller in a series oil-gas separation structure according to an embodiment of the present invention;

1. an engine body; 2. a labyrinth oil-gas separation mechanism; 3. a hollow rotating shaft; 3a, a first channel; 4. a centrifugal impeller; 4a, an oil gas inlet; 5. a camshaft; 6. a first gear; 7. a second gear; 8. a bearing cap; 8a, a third channel; 9. a cylinder head cover; 10. labyrinth cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "fixed," "disposed," "secured" or "disposed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered to be "fixedly connected" to another element, the two elements may be fixed by way of detachable connection, or may be fixed by way of non-detachable connection, such as socket connection, snap connection, integrally formed fixation, welding, etc., which can be realized in the prior art, and thus are not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The references to "first" and "second" in the present invention do not denote any particular quantity or order, but rather are merely used to distinguish one name from another.

With reference to fig. 1-3, the tandem type oil-gas separation structure of this embodiment includes an engine body 1, a labyrinth type oil-gas separation mechanism 2 is disposed in the engine body 1, a hollow rotating shaft 3 and a control structure for controlling rotation of the hollow rotating shaft 3 are further disposed in the engine body 1, both ends of the hollow rotating shaft 3 in the hollow interior are open, a first channel 3a communicated with the labyrinth type oil-gas separation mechanism 2 is disposed in the hollow rotating shaft 3, an inlet end of the hollow rotating shaft 3 is fixedly connected with a centrifugal impeller 4, the centrifugal impeller 4 is of an existing multi-blade spiral structure, a plurality of oil-gas inlets 4a communicated with the first channel 3a are disposed on the centrifugal impeller 4, the oil-gas inlets 4a are uniformly distributed on the periphery of the centrifugal impeller 4, when the centrifugal impeller 4 rotates at a high speed, oil in the oil-gas is thrown out at a high speed, and the oil-gas enters the first channel 3a through the oil-gas inlets 4a under the action of an adsorption force generated by the rotation of the centrifugal impeller 4, so as to achieve the purpose of oil-gas separation.

The series connection type oil-gas separation structure is combined with a traditional labyrinth oil-gas separation mechanism 2, a centrifugal impeller 4 is connected in series in front of the labyrinth oil-gas separation mechanism 2, the centrifugal impeller 4 is installed on a hollow rotating shaft 3 and is driven by the hollow rotating shaft 3 to work, engine oil is separated out by an efficient rotating and centrifuging principle, oil gas after centrifugal separation continuously enters the labyrinth oil-gas separation mechanism 2, and residual engine oil is further separated from the oil gas by the principle that impact consumes oil-gas energy; the invention achieves the best oil-gas separation effect through a compact two-stage series separation mechanism (a first-stage centrifugation and a second-stage labyrinth), the comprehensive separation effect is excellent, oil-gas transmission channels are integrated in parts, external pipelines are not needed, and the structure is simple and compact.

As the utility model discloses an alternative, be equipped with camshaft 5 in the engine body 1, camshaft 5 is originally exactly the engine body 1's some (all be equipped with the camshaft in the traditional engine), hollow shaft 3 with hollow shaft 3 sets up with the axial, hollow shaft 3 with hollow shaft 3 is the level sets up from top to bottom, control structure including link firmly in first gear 6 on the camshaft 5, and link firmly in second gear 7 on the hollow shaft 3, first gear 6 and the meshing transmission of second gear 7, can pass through when camshaft 5 is rotatory the meshing transmission of first gear 6 and second gear 7 drives hollow shaft 3 synchronous revolution, and the accessible drive ratio adjustment control between first gear 6 and the second gear 7 the speed ratio of camshaft 5 and hollow shaft.

As the utility model discloses an alternative, second gear 7 is located hollow shaft 3's entrance point, because the centrifugal force that hollow shaft 3's entrance point received is great, through first gear 6 and second gear 7's butt can realize right hollow shaft 3's the support of entrance point, thereby improve hollow shaft 3's the stability of entrance point.

As the alternative of the present invention, in order to improve the suction volume of the oil gas, the inlet end of the hollow rotating shaft 3 is flared, and the inlet end of the hollow rotating shaft 3 is designed to be flared, and on the other hand, the centrifugal impeller 4 is also installed and fixed.

As the utility model discloses an alternative, be equipped with bearing cap 8 in the engine body 1, hollow shaft 3 and the equal rotatable installation of camshaft 5 in on the bearing cap 8, thereby make hollow shaft 3 and camshaft 5's relative position remain fixed throughout, improve stability during hollow shaft 3 and the transmission of camshaft 5.

As the utility model discloses an alternative, in order to guarantee when hollow rotating shaft 3 is rotatory, first passageway 3a and labyrinth oil-gas separation mechanism 2 remain the intercommunication throughout, be equipped with on the bearing cap 8 and be used for the intercommunication the third passageway 8a of first passageway 3a and labyrinth oil-gas separation mechanism 2, oil gas gets into the labyrinth through the inside and third passageway of hollow rotating shaft after centrifugal separation, and whole transmission passage does not have external pipeline, and simple structure is compact, and the pressure loss is little, hollow rotating shaft 3's exit end with the rotatory butt of bearing cap 8 is sealed.

As the utility model discloses an alternative, be equipped with cylinder head cover 9 on the engine body 1, labyrinth oil-gas separation mechanism 2 is including locating oil-gas separation maze in the cylinder head cover 9, the oil-gas separation maze is prior art, and the event is not repeated here, and mainly used realizes the second grade separation of oil gas, still include with the sealed complex labyrinth cover board 10 of cylinder head cover 9, labyrinth cover board 10 pass through the bolt lock in the outside of cylinder head cover 9.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a serial-type oil-gas separation structure, includes engine body, this internal labyrinth oil-gas separation mechanism that is equipped with of engine, its characterized in that: the engine is characterized in that a hollow rotating shaft and a control structure used for controlling the rotation of the hollow rotating shaft are further arranged in the engine body, a first channel communicated with the labyrinth oil-gas separation mechanism is arranged in the hollow rotating shaft, a centrifugal impeller is fixedly connected with an inlet end of the hollow rotating shaft, and a plurality of oil-gas inlets communicated with the first channel are formed in the centrifugal impeller.

2. The tandem oil-gas separation structure according to claim 1, wherein: this internal camshaft that is equipped with of engine, hollow shaft with hollow shaft sets up with the axial, control structure including link firmly in first gear on the camshaft to and link firmly in the epaxial second gear of hollow shaft, first gear and second gear meshing transmission.

3. The tandem oil-gas separation structure according to claim 2, wherein: the second gear is arranged at the inlet end of the hollow rotating shaft.

4. The tandem oil-gas separation structure according to claim 2, wherein: the engine body is internally provided with a bearing cover, and the hollow rotating shaft and the cam shaft are rotatably arranged on the bearing cover.

5. The tandem oil-gas separation structure according to claim 4, wherein: and a third channel for communicating the first channel with the labyrinth oil-gas separation mechanism is arranged on the bearing cover.

6. The tandem oil-gas separation structure according to claim 1, wherein: the labyrinth type oil-gas separation mechanism comprises an oil-gas separation labyrinth arranged in the cylinder head cover.

7. The tandem oil-gas separation structure according to claim 6, wherein: the cylinder head cover further comprises a labyrinth cover plate in sealing fit with the cylinder head cover.

8. The tandem oil-gas separation structure according to any one of claims 1 to 4, wherein: the inlet end of the hollow rotating shaft is in a flaring shape.