CN218971384U

CN218971384U - Crankcase oil return mechanism

Info

Publication number: CN218971384U
Application number: CN202223032612.8U
Authority: CN
Inventors: 王睿
Original assignee: Taike Machinery Technology Dongguan Co ltd
Current assignee: Taike Machinery Technology Dongguan Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-05-05
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a crankcase oil return mechanism, which is provided with a crankcase shell, an exhaust device and an oil return oil way, wherein an oil hole is formed in the upper part of the crankcase shell, an exhaust hole A is formed in the front end of the crankcase shell, the exhaust device is provided with an oil cavity, an air cavity is connected above the oil cavity in a threaded manner, the air cavity is communicated with the oil cavity, an exhaust hole B is formed in the top of the air cavity, the oil cavity is communicated with the crankcase shell, the oil cavity is provided with the oil drain hole, filter cotton is arranged in the center of the oil cavity, and the oil return oil way is provided with an oil inlet pipe, an oil pump and an oil return pipe. According to the utility model, the exhaust device and the oil return oil way are arranged, so that the carried lubricating oil is stored in the oil cavity, enters the oil return oil way through the oil drain hole and finally returns to the crankcase through the oil return pipe under the action of the oil pump, thereby realizing oil return of the crankcase, protecting the environment and preventing the working problem of the crankcase caused by lack of the lubricating oil.

Description

Crankcase oil return mechanism

Technical Field

The utility model relates to the field of air compressors, in particular to a crankcase oil return mechanism.

Background

The air compressor is a device for converting motive mechanical energy into gas pressure energy, and is a pressure generating device for compressed air, most of the air compressors are reciprocating pistons, rotating blades or rotating screws, the part of a cylinder block for installing a crankshaft is called a crankcase, lubricating oil (air compressor oil) is stored in the crankcase, more or less compressed gas enters the crankcase from gaps of parts in the operation process of the air compressor, so that the crankcase is provided with gas pressure, the operation of the crankcase is affected, and the crankcase is damaged seriously.

Currently, for this situation, there are two general solutions in industry, the first is that the solution works continuously until the air pressure in the crankcase is balanced with the working air pressure, which requires the crankcase to work under high pressure, and the solution has high quality requirement on the crankcase and relatively high equipment price; the second solution is to continuously release pressure from the crankcase, namely, an exhaust hole is formed in the crankcase, which is the most commonly used in the industry, however, the solution of pressure release has drawbacks, under the condition of lifting under air pressure, the lubricating oil (air compressor oil) in the crankcase is easily carried out while the pressure is released, the lubricating oil (air compressor oil) in the crankcase is insufficient over time, the working is influenced while the environment is polluted, and therefore, a crankcase oil return mechanism is necessary to be studied to solve the problems.

Disclosure of Invention

The utility model aims to: in order to overcome the defects in the prior art, the utility model provides a crankcase oil return mechanism, which is provided with a crankcase shell, an exhaust device and an oil return oil way;

the top of the crankcase shell is provided with an oil filling hole, and the front of the crankcase shell is provided with an exhaust hole A;

the exhaust device is provided with an oil cavity, an air cavity is connected above the oil cavity in a threaded manner, the air cavity is communicated with the oil cavity, the top of the air cavity is provided with an exhaust hole B, the interior of the oil cavity is communicated with the interior of a crankcase shell, the oil cavity is provided with an oil drain hole, and the center of the oil cavity is provided with filter cotton;

the oil return way is equipped with into oil pipe, oil pump, returns oil pipe, advance oil pipe one end and the sealed intercommunication of oil drain hole, the other end and the sealed intercommunication of oil pump input, return oil pipe one end and the sealed intercommunication of oil pump output, the other end and the sealed intercommunication of oil filler hole.

Further, the oil cavity is connected to the crankcase shell in a threaded mode, the oil cavity is provided with a filter cotton mounting groove, filter cotton is mounted in the filter cotton mounting groove, an air inlet hole is formed in the side face of the filter cotton mounting groove, and the air inlet hole is communicated with the exhaust hole A.

Further, the oil return way is also provided with a check valve A and a check valve B, the oil inlet pipe is communicated with the input end of the check valve A in a sealing way, the output end of the check valve A is communicated with the input end of the oil pump in a sealing way, the input end of the oil pump is communicated with the input end of the check valve B in a sealing way, and the output end of the check valve B is communicated with the oil return pipe in a sealing way so as to prevent lubricating oil in the crankcase from flowing backwards through the oil return pipe.

The beneficial effects of the utility model are as follows:

according to the crankcase oil return mechanism, through the arrangement of the exhaust device and the oil return oil way, lubricating oil carried out in the crankcase is stored in the oil cavity, then enters the oil return oil way through the oil drain hole, finally returns to the crankcase through the oil return pipe under the action of the oil pump, so that oil return of the crankcase is realized, the environment is protected, and the working problem of the crankcase caused by lack of the lubricating oil is prevented;

the filter cotton can prevent lubricating oil from being directly sprayed out of the air cavity, and pure lubricating oil can be filtered.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a crankcase oil return mechanism according to the present embodiment;

FIG. 2 is a schematic diagram of a crankcase housing of a crankcase oil return mechanism according to this embodiment;

FIG. 3 is a schematic diagram of an exhaust apparatus of a crankcase oil return mechanism according to the present embodiment;

fig. 4 is a schematic diagram of an oil return path structure of the crankcase oil return mechanism according to the present embodiment;

FIG. 5 is a schematic diagram of an oil chamber structure of a crankcase oil return mechanism according to the present embodiment;

FIG. 6 is a schematic diagram of a partial structure of a crankcase oil return mechanism according to the present embodiment;

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

In the embodiment, as shown in fig. 1 to 6, a crankcase oil return mechanism is provided with a crankcase shell 1, an exhaust device 3 and an oil return oil path 2.

The top of the crankcase shell 1 is provided with an oil filling hole 11, the front face of the crankcase shell is provided with an exhaust hole A12, the exhaust device 3 is provided with an oil cavity 32, an air cavity 31 is connected above the oil cavity 32 in a threaded manner, the oil cavity 32 and the air cavity 31 are hollow, the oil cavity 32 and the air cavity 31 are communicated, the top of the air cavity 31 is provided with an exhaust hole B311, the side face of the oil cavity 32 is provided with an oil discharging hole 321, the center of the oil cavity 32 is provided with a filter cotton mounting groove 325, the filter cotton mounting groove 325 is provided with a filter cotton 322, the side face of the filter cotton mounting groove 325 is provided with an air inlet hole 324, and the air inlet hole 324 is communicated with the exhaust hole A12.

The oil return way 2 comprises an oil inlet pipe 24, an oil pump 21, an oil return pipe 25, a check valve A22 and a check valve B23, wherein the input end of the oil inlet pipe 24 is communicated with the oil drain hole 321 in a sealing way, the output end of the oil return pipe is communicated with the input end of the check valve A22 in a sealing way, the output end of the check valve A22 is communicated with the input end of the oil pump 21 in a sealing way, the output end of the oil pump 21 is communicated with the input end of the check valve B23 in a sealing way, the check valve B23 is communicated with the input end of the oil return pipe 25 in a sealing way, and the output end of the oil return pipe 25 is communicated with the oil drain hole 11 in a sealing way.

The working flow is as follows:

the oil-carrying gas is output from the exhaust hole A12 and enters the oil cavity 32 through the air inlet 324, the oil body is contacted with the filter cotton 322 at the first time, the oil body is separated from the gas under the blocking of the filter cotton 322, the gas passes through the air cavity 31 and finally is discharged from the exhaust hole B311, the oil body is filtered through the filter cotton 322 and then is left in the oil cavity 32, the oil pump 21 works at the moment, the oil body enters the oil inlet pipe 24 through the oil drain hole 321, the oil body returns to the crankcase shell 1 through the oil return pipe 25 and the oil filling hole 11, and the check valve A22 and the check valve B23 prevent the oil body from flowing backwards.

The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims

1. A crankcase oil return mechanism is provided with a crankcase housing (1), characterized in that: an exhaust device (3) and an oil return way (2) are arranged;

the top of the crankcase shell (1) is provided with an oil filling hole (11), and the front of the crankcase shell (1) is provided with an exhaust hole A (12);

the exhaust device (3) is provided with an oil cavity (32), an air cavity (31) is connected above the oil cavity (32) in a threaded manner, the inside of the air cavity (31) is communicated with the inside of the oil cavity (32), an exhaust hole B (311) is formed in the top of the air cavity (31), the oil cavity (32) is communicated with the crankcase shell (1), an oil drain hole (321) is formed in the oil cavity (32), and filter cotton (322) is arranged in the center of the oil cavity (32);

the oil return way (2) is provided with an oil inlet pipe (24), an oil pump (21) and an oil return pipe (25), one end of the oil inlet pipe (24) is communicated with the oil discharge hole (321) in a sealing mode, the other end of the oil inlet pipe is communicated with the input end of the oil pump (21) in a sealing mode, one end of the oil return pipe (25) is communicated with the output end of the oil pump (21) in a sealing mode, and the other end of the oil return pipe is communicated with the oil injection hole (11) in a sealing mode.

2. The crankcase oil return mechanism of claim 1, wherein: the oil cavity (32) is in threaded connection with the crankcase shell (1), the oil cavity (32) is provided with a filter cotton mounting groove (325), filter cotton (322) is mounted in the filter cotton mounting groove (325), an air inlet hole (324) is formed in the side face of the filter cotton mounting groove (325), and the air inlet hole (324) is communicated with the exhaust hole A (12).

3. The crankcase oil return mechanism of claim 1, wherein: the oil return way (2) is further provided with a check valve A (22) and a check valve B (23), the oil inlet pipe (24) is communicated with the input end of the check valve A (22) in a sealing way, the output end of the check valve A (22) is communicated with the input end of the oil pump (21) in a sealing way, the input end of the oil pump (21) is communicated with the input end of the check valve B (23) in a sealing way, and the output end of the check valve B (23) is communicated with the oil return pipe (25) in a sealing way.