CN2231325Y

CN2231325Y - Reciprocating piston air compressor

Info

Publication number: CN2231325Y
Application number: CN 94247014
Authority: CN
Inventors: 吕业强; 庞永良; 廖柳红
Original assignee: LIUZHOU CITY UNIVERSAL MACHINERY GENERAL FACTORY
Current assignee: LIUZHOU CITY UNIVERSAL MACHINERY GENERAL FACTORY
Priority date: 1994-12-08
Filing date: 1994-12-08
Publication date: 1996-07-17
Anticipated expiration: 2004-12-08

Abstract

The utility model relates to a reciprocating piston air compressor, characterized in that a secondary cylinder 4 adopts a secondary barrel shape cylinder with small upper part and big lower part; a secondary piston 8 has the shape according to the secondary cylinder; the combination portion of the big end and the small end of the secondary piston is provided with a hole 10 communicated with a machine body; optimal pressure distribution can be obtained when the diameter of the secondary piston is 45 millimeters and the diameter of a primary piston is 100 millimeters. The utility model has the advantages of small power consumption and low exhaust temperature, and facilitates safe operation.

Description

Reciprocating-piston air compressor

It is reciprocating-piston air compressor below 3 cubes m/mins that the utility model relates to a kind of air displacement.

The present small-sized reciprocating-piston air compressor that uses, its second piston is owing to be subjected to the restriction of connecting rod small end size, and it is bigger that second piston, cylinder bore are obtained, cause first class pressure than on the low side and secondary pressure than higher, make the secondary delivery temperature surpass the NBS requirement, the mis-behave of lubricant oil and easy carbonization are accumulated on air valve, the pipeline, are easy to have an accident.Because first class pressure is than on the low side, cause the one-level delivery temperature on the low side, the interstage cooler heat transfer temperature difference is little, make the interstage cooler heat transfer efficiency poor, and, just the pressurized air that one-level is discharged must be cooled to lower temperature in order to reduce the secondary delivery temperature, this will design bigger interstage cooler, increase cooling air quantity, cause cost to rise, power consumpiton increases.

It is little that the purpose of this utility model just provides a kind of power consumption, and delivery temperature is low, the secondary delivery temperature complies with the national standard requirements, and helps the reciprocating-piston air compressor of safe operation.

Solution of the present utility model is such: secondary cylinder 4 is made up-small and down-big secondary tubular cylinder, second piston 8 cooperates with the big or small internal diameter of secondary cylinder 4, because cylinder 4 is up-small and down-big secondary tubular cylinders, less size just can optionally be chosen in its upper end, make I and II pressure specific energy reasonable distribution, and the lower end of cylinder assembly 4 is bigger, therefore, second piston 8 increases with the join strength of connecting rod 11, can not reduce to reduce its intensity because of piston 8 upper end sizes.Second piston 8 big small end junctions have with body in the hole 10 that communicates, the volume that second piston side and cylinder are surrounded communicates with the body inner chamber.

The utility model has the advantages that the distribution of I and II pressure ratio rationally, the consumption of complete machine indicated power reduces; The secondary delivery temperature is low, has improved the safety coefficient of complete machine; Because the one-level delivery temperature is improved relatively (in the national Specification scope), the hot temperature difference of interstage cooler is increased, improved the heat transfer efficiency of interstage cooler, under the certain situation of cold blast rate, make that the interstage cooler structure is simpler, volume is littler, reduced cost; The volume that second piston side and cylinder surround has been strengthened the lubrication effect and the cooling effect of secondary cylinder with after the body inner chamber communicates, and has also reduced power consumpiton; Help safe operation.

Accompanying drawing is embodiment of the present utility model.

Accompanying drawing 1 is the complete machine structure schematic representation.

Accompanying drawing 2 is handpiece structure schematic representation.

Accompanying drawing 3 is second piston 8 structural representations.

The utility model includes gas holder 1, driving section 2, pneumoelectric control device 3, secondary cylinder 4, interstage cooler 5, body 6, one-level cylinder 7, second piston 8, first stage piston 9, hole 10, connecting rod 11.

For making the second piston 8 can be more flexible, second piston 8 be also made up-small and down-big second piston, make it to adapt with secondary cylinder 4, its big small end junction have with body in two holes 10 communicating.

After taking above-mentioned measure, one-level cylinder 7 adopts the cylinder diameter of 100 millimeters of diameters, when secondary cylinder 4 adopts the cylinder diameter of 45 millimeters of diameters, can obtain optimum pressure than distributing.

Claims

1, a kind of reciprocating-piston air compressor, include gas holder 1, secondary cylinder 4, body 6, one-level cylinder 7, it is characterized in that secondary cylinder 4 internal diameters are up-small and down-big secondary tubular cylinders, second piston 8 is the second pistons that cooperate with the big or small internal diameter of secondary cylinder assembly 4.

2, reciprocating-piston air compressor according to claim 1, it is characterized in that second piston 8 big small end junctions have with body in the hole 10 that communicates.

3, reciprocating-piston air compressor according to claim 1 and 2 is characterized in that second piston 8 small end cylinder bore diameters are 45 millimeters of diameters, and one-level cylinder 7 internal diameters are 100 millimeters of diameters.