CN215633229U

CN215633229U - Engine crankcase oil gas recovery device of mining land leveler

Info

Publication number: CN215633229U
Application number: CN202122245602.1U
Authority: CN
Inventors: 闫鹏举; 范运杰; 王跃; 卢圣利; 杨凯; 段俊杰
Original assignee: Xuzhou XCMG Road Construction Machinery Co Ltd
Current assignee: Xuzhou XCMG Road Construction Machinery Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-25
Anticipated expiration: 2031-09-16

Abstract

The utility model provides an oil-gas recovery device for an engine crankcase of a mining grader, which comprises a crankcase arranged in an engine body, wherein the bottom of the crankcase is provided with an oil pan, and the oil-gas recovery device further comprises an exhaust pipe, an oil-gas separation device, an oil return pipe and a waste discharge pipe; the oil-gas separation device is internally provided with a filter screen, a partition plate and an exhaust passage. The oil gas recovery device can quickly condense high-temperature engine oil gas in the crankcase, changes the engine oil gas in hot air into liquid engine oil which flows back to the engine oil pan, reduces the temperature of the engine oil, reduces the oil gas taken away by a waste gas pipe, improves the utilization rate of the engine oil, and effectively reduces the engine oil consumption of the engine.

Description

Engine crankcase oil gas recovery device of mining land leveler

Technical Field

The utility model belongs to the field of engine parts, and particularly relates to an oil gas recovery device for an engine crankcase of a mining land leveler.

Background

The large-scale mining land leveller mainly adopts a diesel engine as a power source in the construction process, the diesel engine also adopts engine oil as a main lubricant and a heat dissipation medium, the consumption speed of the engine oil is directly related to the service life of the diesel engine and the use cost of users, the large-scale mining land leveller has poor working conditions and long continuous operation time, if the consumption of the engine oil is too high, the engine oil pump is inevitably difficult to suck the engine oil from an oil pool, the turbocharger lacks the heat dissipation of the engine oil and is damaged by high-temperature sintering, meanwhile, each lubricating system of the diesel engine cannot establish an oil film, each moving part between an engine crankshaft and a connecting rod and the like generates dry friction, the engine is early worn, even the shutdown faults such as cylinder pulling and the like are caused, and the normal use of the engine is influenced. The consumption of the engine oil of the diesel engine is mainly that the engine oil consumed by lubrication among all moving parts and the engine oil lost through a crankcase ventilation pipe, how to reduce the loss of the engine oil through the crankcase ventilation pipe is particularly important. At present, oil gas is condensed on a partition plate and flows back to an engine mainly in the form of the partition plate, but the filtering efficiency of the method is low, most of engine oil still exits the engine along with hot air, and the abnormal consumption of the engine oil is caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide an engine crankcase oil-gas recovery device of a mining land leveler, which can effectively separate engine oil from oil gas, so that high-temperature gas in a crankcase can be rapidly condensed, and the condensed engine oil can rapidly enter an oil pan to lubricate and cool an engine again.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

an oil-gas recovery device of an engine crankcase of a mining grader comprises a crankcase arranged in an engine body, wherein an oil pan is arranged at the bottom of the crankcase, and the oil-gas recovery device further comprises an exhaust pipe, an oil-gas separation device, an oil return pipe and a waste discharge pipe; the exhaust pipe is communicated with the crankcase and the oil-gas separation device; a filter screen, a partition plate and an exhaust channel are arranged in the oil-gas separation device; the exhaust channel is vertically arranged, and the exhaust port is positioned on a top cover plate of the oil-gas separation device; the partition plate is arranged between the inner wall of the oil-gas separation device and the air inlet of the exhaust channel, and a plurality of holes are formed in the partition plate; the filter screen is arranged in an area formed by the exhaust channel, the partition plate and the inner wall of the oil-gas separation device; one end of the oil return pipe is communicated with the bottom of the oil-gas separation device, and the other end of the oil return pipe is communicated with the oil pan; the waste discharge pipe is connected with an exhaust port at the top of the oil-gas separation device.

Furthermore, the filter screen is a concave-convex honeycomb structure stainless steel filter screen.

Furthermore, the filter screen is spiral setting around exhaust passage, encircles exhaust passage and is concentric circles setting or around exhaust passage circumference distribution setting.

Furthermore, the baffle is loudspeaker form, can increase the area of contact of high temperature oil gas and baffle.

Furthermore, the top of the oil-gas separation device is provided with a detachable cover plate.

Further, the section of the exhaust channel is honeycomb-shaped.

Furthermore, an exhaust port at the top of the oil-gas separation device is provided with an activated carbon filter box which can adsorb toxic and harmful gases in waste gas.

Further, the blast pipe passes through the clamp and is connected with crankcase and oil-gas separation device, the exhaust pipe passes through the clamp and is connected with oil-gas separation device, avoids vibrations to each part connection leakproofness's influence, ensures separator's reliability.

Further, a fixed support is arranged outside the engine body, the oil-gas separation device is installed on the fixed support, and the oil-gas separation device and the fixed support can be connected together by welding or fixed together by a hoop.

When the oil-gas separator is used, high-temperature gas exhausted from the crankcase enters the oil-gas separator through the exhaust pipe, is rapidly condensed through the filter screen and the partition plate, engine oil gas carried by the high-temperature gas is changed into liquid engine oil and flows back to an engine oil bottom shell, and the condensed gas after the engine oil is separated is exhausted out of an engine through the exhaust pipe.

The utility model has the beneficial effects that:

(1) the oil-gas separation device is independent of the outside of the engine, effectively avoids the influence of the high temperature of the engine on the separation effect, and can quickly condense the high-temperature oil gas in the crankcase and improve the separation efficiency.

(2) The oil gas recovery device can quickly condense high-temperature engine oil gas in the crankcase, changes the engine oil gas in hot air into liquid engine oil which flows back to the engine oil pan, reduces the temperature of the engine oil, reduces the oil gas taken away by a waste gas pipe, improves the utilization rate of the engine oil, and effectively reduces the engine oil consumption of the engine.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a schematic sectional view of the oil-gas separation device of example 1.

Fig. 3 is a schematic cross-sectional view of the oil-gas separation device of example 2.

Fig. 4 is a schematic sectional view of the oil-gas separation device of example 3.

FIG. 5 is a schematic cross-sectional view of the oil-gas separation device of example 4.

Reference numerals: 1-crankcase, 2-exhaust pipe, 3-oil-gas separation device, 4-oil return pipe, 5-oil pan, 6-waste discharge pipe, 7-support, 8-filter screen, 9-partition board, 10-exhaust passage and 11-cover plate.

Detailed Description

The technical solutions of the present invention will be described in detail and fully with reference to the following specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1

As shown in fig. 1 and 2, the oil-gas recovery device for the engine crankcase of the mining grader comprises a crankcase 1 arranged in an engine body, wherein an oil pan 5 is arranged at the bottom of the crankcase 1, and the oil-gas recovery device further comprises an exhaust pipe 2, an oil-gas separation device 3, an oil return pipe 4 and a waste discharge pipe 6; the exhaust pipe 2 is connected with the crankcase 1 and the oil-gas separation device 3 through a hoop; a concave-convex honeycomb structure stainless steel filter screen 8, a partition plate 9 and an exhaust passage 10 are arranged in the oil-gas separation device 3; the exhaust passage 10 is vertically arranged, and the exhaust port is positioned on a detachable cover plate 11 at the top of the oil-gas separation device 3; the partition plate 9 is in a shape of a horn with a small upper part and a large lower part and is arranged between the inner wall of the oil-gas separation device 3 and the air inlet of the exhaust channel 10, and a plurality of holes are arranged on the partition plate 9; the filter screens 8 are arranged in an area formed by the exhaust passage 10, the partition plate 9 and the inner wall of the oil-gas separation device 3 and are distributed circumferentially around the exhaust passage 10; one end of the oil return pipe 4 is communicated with the bottom of the oil-gas separation device 3, and the other end of the oil return pipe is communicated with an oil pan 5; the waste discharge pipe 6 is connected with an exhaust port at the top of the oil-gas separation device 3 through a hoop; the engine body is provided with fixed bolster 7 outward, oil-gas separation device 3 passes through clamp fixed mounting on fixed bolster 7.

Example 2

As shown in fig. 3, the engine crankcase oil-gas recovery device of a mining grader in this embodiment is different from embodiment 1 in that the filter screen 8 is arranged concentrically around the exhaust passage 10, the section of the exhaust passage 10 is honeycomb-shaped, and an exhaust port at the top of the oil-gas separation device 3 is provided with an activated carbon filter box.

Example 3

As shown in fig. 4, the difference between the engine crankcase oil gas recovery device of the mining grader of the present embodiment and embodiment 1 is that the partition plate 9 has a trumpet shape with a large upper part and a small lower part.

Example 4

As shown in fig. 5, the engine crankcase oil gas recovery device of the mining grader of the present embodiment differs from embodiment 2 in that the filter screen 8 is spirally disposed around the exhaust passage 10.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are included in the scope of the present invention, and the scope of the present invention is subject to the scope of the claims.

Claims

1. An oil-gas recovery device of an engine crankcase of a mining grader comprises a crankcase arranged in an engine body, wherein the bottom of the crankcase is provided with an oil pan; the exhaust pipe is communicated with the crankcase and the oil-gas separation device; a filter screen, a partition plate and an exhaust channel are arranged in the oil-gas separation device; the exhaust channel is vertically arranged, and the exhaust port is positioned on a top cover plate of the oil-gas separation device; the partition plate is arranged between the inner wall of the oil-gas separation device and the air inlet of the exhaust channel, and a plurality of holes are formed in the partition plate; the filter screen is arranged in an area formed by the exhaust channel, the partition plate and the inner wall of the oil-gas separation device; one end of the oil return pipe is communicated with the bottom of the oil-gas separation device, and the other end of the oil return pipe is communicated with the oil pan; the waste discharge pipe is connected with an exhaust port at the top of the oil-gas separation device.

2. The engine crankcase oil and gas recovery device of mining grader according to claim 1, wherein the filter screen is a concave-convex honeycomb structure stainless steel filter screen.

3. The engine crankcase oil and gas recovery device of the mining grader according to claim 1 or 2, wherein the filter screen is spirally arranged around the exhaust passage, is arranged around the exhaust passage in a concentric circle or is circumferentially distributed around the exhaust passage.

4. The engine crankcase vapor recovery device of a mining grader as in claim 1, wherein the bulkhead is flared.

5. The engine crankcase oil-gas recovery device of mining grader as in claim 1, wherein the top of the oil-gas separation device is provided with a detachable cover plate.

6. The engine crankcase vapor recovery device of a mining grader as in claim 1, wherein the exhaust passage is honeycomb shaped in cross-section.

7. The engine crankcase oil-gas recovery device of mining grader according to claim 1, wherein the top exhaust port of the oil-gas separation device is provided with an activated carbon filter box.

8. The engine crankcase oil and gas recovery device of mining grader as in claim 1, wherein the vent pipe is connected with the crankcase and the oil and gas separation device through a clamp, and the waste pipe is connected with the oil and gas separation device through a clamp.

9. The engine crankcase oil-gas recovery device of mining grader according to claim 1, wherein a fixed bracket is arranged outside the engine body, and the oil-gas separation device is mounted on the fixed bracket.