CN2893215Y

CN2893215Y - Full oilless lubricating intermediate pressure piston reciprocating air compressor

Info

Publication number: CN2893215Y
Application number: CN 200620002692
Authority: CN
Inventors: 汪潜
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-13
Filing date: 2006-01-13
Publication date: 2007-04-25
Anticipated expiration: 2016-01-13

Abstract

The utility model discloses an oil-free lubrication medium-pressure piston reciprocating air compressor. No lubricating oil is in the bent axle box; all bearings are lubricated with grease with full sealing so as to prevent escape of the grease. Furthermore, the piston ring and the guide ring and other motive seals are all made of lubrication materials; therefore, the compressed air vented comprises no lubrication oil, generally requiring no filter to be provided further. The utility model is particularly applicable to the industries in which the compressed air is required of high quality. Since no lubrication oil required to be filled while the machines are in operation, no guard staff is required. The air compressor of the utility model, with highly reduced use-cost, is an environment-friendly machine, and can be kept in operation for over one year with no halt, safely and reliably. The utility model meets the national standard of service life on normal compressors: one year of service life to be ensured.

Description

Press piston reciprocating air compressor in the full-oil-free lubrication

(1) technical field:

The utility model relates to a kind of air compressor, relates in particular in a kind of full-oil-free lubrication and presses piston reciprocating air compressor.

(2) background technique:

At present, common middle pressure piston reciprocating air compressor is department's design of having relatively high expectations for pressure on the market, its structure is basic identical, motions such as the sliding bearing of the main bearing of crankshaft two end, the sliding bearing of connnecting rod big end, connecting rod small end and piston ring, scraper ring and seal element are thin oil lubricant, so can cause in the pressurized air of discharge to contain a large amount of lubricant oil.In some industries that source of the gas is had relatively high expectations (as industries such as food, medical treatment, chemical industry), the filter that can only increase a series of different accuracy grades of configuration is removed lubricant oil in the pressurized air, and present filter life is limited, general some months, be no more than 1 year at most, must frequent change filter, but filter can't recycling; On the other hand, air compressor must guarantee that normal oil level could safe operation, and lubricant oil always constantly is compressed air and takes out of, will add lubricant oil in very short time one time, needs the arrangement personnel on duty.These all cause the waste of manpower and resource, and not environmental protection.

(3) summary of the invention:

Technical problem to be solved in the utility model just provides in the full-oil-free lubrication that does not contain lubricant oil in the pressurized air that all friction pairs of a kind of machine all do not adopt thin oil lubricant, discharge and presses piston reciprocating air compressor, it does not need personnel on duty substantially, greatly reducing user cost, is a kind of environment protection type machine.

In order to solve the problems of the technologies described above, it is such pressing the technical solution that piston reciprocating air compressor adopted in the full-oil-free lubrication of the present utility model: do not have lubricant oil in the crankcase of air compressor, the sealed type rolling bearing of grease lubrication is installed in the bearings at both ends position of bent axle; At the major part of connecting rod the sealed type rolling bearing of grease lubrication is installed, this bearing inner race cooperates with bent axle; Microcephaly at connecting rod installs needle bearing, and in the connecting rod small end both ends of the surface seal ring is installed; The wrist pin that connects with connecting rod small end adopts the blind hole structure, and the solid lubricant grease of wrist pin is also blocked with plug, and needle bearing communicates with two apertures of wrist pin inner chamber; Piston ring on the piston and guide ring all adopt the self lubricating material manufacturing.

After adopting technique scheme, owing to do not have lubricant oil in the crankcase of pressure piston reciprocating air compressor in the full-oil-free lubrication of the present utility model, in the bearings at both ends position of bent axle and the major part of connecting rod the sealed type rolling bearing of grease lubrication is installed all, in the machine operation procedure, above-mentioned bearing can be kept lubricated by self internal grease; And needle bearing is installed the microcephaly of connecting rod, and seal ring is installed in the connecting rod small end both ends of the surface, the wrist pin that connects with connecting rod small end adopts the blind hole structure, the solid lubricant grease of wrist pin is also blocked with plug, needle bearing communicates with two apertures of wrist pin inner chamber, in the machine operation procedure, can to flow to needle bearing by aperture lubricated to keep for lubricant grease in the wrist pin.Like this, all bearings all are grease lubrications, and sealing fully, and grease can not leak.In addition, motion Sealings such as piston ring and guide ring all adopt the self lubricating material manufacturing, therefore, do not contain lubricant oil in the pressurized air of discharge, and generally configuration filter again is specially adapted to some industries higher to the pressurized air quality requirements.Owing to need not add lubricant oil in the machine running process, so it is on duty to need not personnel.Air compressor of the present utility model greatly reduces user cost, is a kind of environment protection type machine, and it can move more than 1 year safely and reliably continuously, is up to state standards to the life-span regulation of general compressor: guaranteed 1 year.

(4) description of drawings:

Fig. 1 is the schematic representation of pressing piston reciprocating air compressor in the utility model full-oil-free lubrication;

Fig. 2 is the piston region structural representation of air compressor shown in Figure 1;

Fig. 3 is the bent axle position schematic representation of air compressor shown in Figure 1.

(5) embodiment:

In conjunction with Fig. 1, Fig. 2, Fig. 3 as seen; press piston reciprocating air compressor not adopt thin oil lubricant in the full-oil-free lubrication of the present utility model; there is not lubricant oil in the crankcase 1 of air compressor; in the bearings at both ends position of bent axle 2 the sealed type rolling bearing 3 of grease lubrication is installed, bearing (ball) cover 4 and bearing support 5 have the effect of protection bearing 3 seal rings concurrently.Major part 7 at connecting rod 6 is installed the sealed type rolling bearing 8 of another model grease lubrication, and these bearing 8 inner rings cooperate with bent axle 2.Microcephaly at connecting rod 6 installs needle bearing 9, and in connecting rod 6 microcephaly's both ends of the surface seal ring 10 is installed; The wrist pin that connects with connecting rod 6 microcephalies 11 adopts the blind hole structures, and wrist pin 11 solid lubricant greases are blocked with grease-proof with plug 12 and to be leaked outside; Needle bearing 9 communicates with two apertures 13 of wrist pin 11 inner chambers.In the piston element, remove original scraper ring, set up guide ring, play effect the piston location.Piston ring 16 and guide ring 17 on cylinder 14 inner carriers 15 all adopt the self lubricating material manufacturing, suitably adjust piston 15 skirt section sizes and get final product.

Described sealed type rolling bearing 3 and sealed type rolling bearing 8 are the standard piece that can directly buy on market; The self lubricating material that described piston ring 16 and guide ring 17 adopt can be filled polytetrafluoroethylene, polyether-ether-ketone etc.Above-mentioned variation is all to realize the purpose of this utility model degree of being.

Claims

1, press piston reciprocating air compressor in a kind of full-oil-free lubrication, it is characterized in that: the crankcase of air compressor does not have lubricant oil in (1), and the sealed type rolling bearing (3) of grease lubrication is installed in the bearings at both ends position of bent axle (2); At the major part (7) of connecting rod (6) the sealed type rolling bearing (8) of grease lubrication is installed, this bearing (8) inner ring cooperates with bent axle (2); Microcephaly at connecting rod (6) installs needle bearing (9), and in connecting rod (6) microcephaly's both ends of the surface seal ring (10) is installed; The wrist pin (11) that connects with connecting rod (6) microcephaly adopts the blind hole structure, and the solid lubricant grease of wrist pin (11) is also blocked with plug (12), and needle bearing (9) communicates with two apertures (13) of wrist pin (11) inner chamber; Piston ring (16) and guide ring (17) on cylinder (14) inner carrier (15) all adopt the self lubricating material manufacturing.