CN102094785A

CN102094785A - Miniature piston air pump without oil lubrication

Info

Publication number: CN102094785A
Application number: CN2011100621925A
Authority: CN
Inventors: 卢高
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2011-06-15
Anticipated expiration: 2031-03-16
Also published as: CN102094785B

Abstract

The invention relates to a miniature piston air pump without oil lubrication. The miniature piston air pump comprises a motor, an air storage tank, a crankshaft box, an air inlet and exhaust pipeline and a cylinder, wherein the cylinder comprises a crosshead slideway at the lower end, a sealing box body at the middle part, a cylinder at the upper part and an air inlet and exhaust device at the top; the lower end of a crosshead piston rod installed in the crosshead slideway is connected with the connecting rod of the crankshaft box, and the upper end of the crosshead piston rod is connected with a piston; and the middle part of the crosshead piston rod penetrates through a sealing filling assembly which is fixedly arranged on the sealing box body. Because the connecting structure of a crosshead and the piston rod and the sealing filling assembly are adopted, the miniature air pump provided by the invention achieves the purpose of compressing air without oil, and has the advantages that the air exhaust port of the air pump can not be carbonized, lubricating oil is saved, the ambient environment can not be polluted, reciprocating bidirectional compression can be realized, the efficacy of the air pump is enhanced, and the electricity is saved.

Description

A kind of miniature oil-free lubrication reciprocating air pump

Technical field

The present invention relates to piston type air compressor (air pump), particularly a kind of miniature oil-free lubrication reciprocating air pump.

Background technique

Minitype piston formula air pump also claims minitype piston formula air compressor, because its light and handy and conveniently moving is used widely in production fields such as industry.Minitype piston formula air pump such as V-type reciprocating air pump commonly used at present, all be to adopt oil lubrication is arranged in their cylinder, the structure of every grade of cylinder all is the bent axle connection connecting rod by crankcase, connecting rod directly connects piston body, the back and forth operation in cylinder of piston ring and scraper ring is installed on the piston body, only produces unidirectional compression.There is following shortcoming in this air pump: the one, and consumption of lubricating oil is big, and these lubricant oil major parts are discharged from the gas holder sewage draining exit, and small part is along with gas is discharged, the severe contamination surrounding enviroment; The 2nd, relief opening is tied carbon easily, and the working life of air valve is short, and maintenance load is big; The most serious is easy oil starvation in the crankcase, will burn cylinder because of carelessness, causes heavy losses.A kind of minitype piston formula oil-free lubrication air pump is arranged at present, it has reached the purpose of not having oil in the pressurized air, outlet valve can not tied carbon, but the structure of this minitype piston formula oil-free lubrication air pump and above-mentionedly miniaturely have the oil lubrication reciprocating air pump not have big variation, just used totally enclosed bearing at bent axle, connecting rod and connecting rod and piston body joint, the piston ring of self lubricating material has been installed on piston body, scraper ring on the piston body is changed into guide ring, and having achieved does not have oil work in the crankcase.But the shortcoming that this minitype piston formula oil-free lubrication air pump has a maximum is: because temperature raises and to make its stream time can not be above 16 hours, although because adopted senior lubricating grease in the bearing, but because the particularity of compressor operating, the as easy as rolling off a log damage of bearing, cylinder is wearing and tearing easily also, this is invisible also to have increased amount of maintenance and cost of production, so this piston type oil-free lubrication air pump is difficult to promote.In addition, above-mentioned two kinds of reciprocating air pumps (air compressor), they all are unidirectional compressions, so their power consumption is also than higher.

Summary of the invention

The oil-free lubrication reciprocating air pump that the purpose of this invention is to provide a kind of new structure in order to overcome the shortcoming that existing above-mentioned various micro air pumps (air compressor) exist, can really be used widely miniature oil-free lubrication air pump aborning.

The technological scheme of this miniature oil-free lubrication reciprocating air pump is as follows

This miniature oil-free lubrication reciprocating air pump comprises motor, gas storage filling, crankcase and advances

Exhaust duct, crankcase top have one-level cylinder and secondary cylinder, it is characterized in that: described one-level cylinder and secondary cylinder, by the crosshead slipway of lower end, middle part

The cylinder on sealed letter body, top and the intake and exhaust device at top four parts are formed; Be installed in cross

Crosshead piston bar in the slideway, the crosshead part of its lower end and the connecting rod of crankcase

Connect, the upper end connects piston, makes it can to-and-fro motion in cylinder; The crosshead piston bar

The middle part, be set with the stuffing box packing assembly, and the stuffing box packing assembly is packed on the sealed letter body.

This miniature oil-free lubrication reciprocating air pump, the sealed letter body on its described cylinder block is established

There is following intake and exhaust device to be communicated with cylinder.

Stuffing box packing assembly in this miniature oil-free lubrication reciprocating air pump, its described sealed letter body is made of scraper ring, block ring, seal ring and guide ring, also can be made of scraper ring, block ring and guide ring.

The effect of this miniature oil-free lubrication reciprocating air pump is fairly obvious, owing to adopt crosshead and piston rod linking body structure, and at upper cover of piston rod dress stuffing box packing assembly, the lubricant oil that is attached on the crosshead piston bar from the crankcase operation has been carried out effective sealing, do not allow it enter in the cylinder, thereby reached the purpose of not having oil in the pressurized air.Simultaneously the stuffing box packing assembly also has and prevents that the cylinder compressed air from flowing backwards by piston rod and leak and to the function of piston rod guiding.Be communicated with cylinder owing to can be provided with down intake and exhaust device on the sealed letter body, so can realize reciprocal bi-directional compression, effectively improve the usefulness of air pump, reached and not only effectively improved the effect of air pump but also the purpose that can economize on electricity; Effectively stoped the consumption and the discharging of lubricant oil to reach the environmental protection purpose again.

The present invention and originalMiniature have the oil lubrication reciprocating air pump to compare, at first be to have saved lubricant oil, as V-0.7/8 air pump, per hour can effectively save lubricant oil 0.12 ㎏, can save lubricant oil 2.88 ㎏ every day, simultaneously, because oil-containing not in the pressurized air, the just water of discharging during the gas holder blowdown can not pollute surrounding enviroment; The secondth, economize on electricity, reciprocating type compression per hour can using electricity wisely (motor with 4KW power is an example) 1.36KW-1.8KW, are one and have obvious products that save energy and resources.In addition, the relief opening of air valve can not tied carbon, effectively improves air valve working life more than one times, can effectively reduce the operating cost of air pump.

Its compact structure is convenient to maintenance simultaneously, and conveniently moving is practical.

Description of drawings

Figure one is the schematic appearance of the miniature oil-free lubrication reciprocating air pump of the present invention

Figure two is structural representations of the miniature oil-free lubrication reciprocating air pump of the present invention

Figure three is bi-directional compression cylinder schematic representation of the miniature oil-free lubrication reciprocating air pump of the present invention

Figure four is unidirectional compression cylinder schematic representation of the miniature oil-free lubrication reciprocating air pump of the present invention

Figure five is schematic representation of original miniature oil-free lubrication reciprocating air pump

Among the figure five: crankcase 3 " connecting rod 31 " cylinder 53 "

Intake and exhaust device 54 " piston 55 "

Embodiment

The invention will be further described below by drawings and Examples.

Embodiment one:

The miniature oil-free lubrication reciprocating air pump of present embodiment is the reciprocating type air pump of bi-directional compression (consulting accompanying drawing one, figure two, figure three), comprises motor 1, gas storage filling 2, crankcase 3 and intake and exhaust pipeline 4, and there are one-level cylinder 5 and secondary cylinder 6 in crankcase 1 top.The structure of described one-level cylinder 5 and secondary cylinder 6 identical (consulting accompanying drawing three), its cylinder block 5 is made up of the crosshead slipway 51 of lower end, the sealed letter body 52 at middle part, the cylinder 53 on top and intake and exhaust device 54 4 parts at top; Be installed in the crosshead piston bar 57 in the crosshead slipway 51, the crosshead part of its lower end is connected with the connecting rod 31 in the crankcase 3, the upper end connection can be in cylinder 53 pistons reciprocating 55; The middle part of crosshead piston bar 57, be set with stuffing box packing assembly 56, and stuffing box packing assembly 56 is packed on the sealed letter body 52, it is by the Gland of installing from bottom to top 561, first stuffing box of interior dress scraper ring 562, block ring 563, second filler of interior dress seal ring 564 closes, block ring 565 and guide sleeve 566 are formed, its function is by Gland 561, the scraper ring 562 that first filler closes, block ring 563 is formed oil resistance, oil scraping mechanism stops the lubricant oil on the piston rod 57 to enter in the cylinder 53, by block ring 565, seal ring 564 during second filler closes is formed choked flow, sealing mechanism stops pressurized air to leak, by block ring 563,565 and guide sleeve 566 to form guide mechanisms be crosshead piston bar 57 guiding.On the sealed letter body 52 of described cylinder block, be provided with intake and exhaust device 520 and be communicated with cylinder.When crosshead piston bar 57 is descending, cavity of resorption pressurized gass in the cylinder 53 can not enter in the crankcase 3, but it is interior in secondary compression inputs to gas holder 2 to enter down the porting 523 and the intake and exhaust pipeline 4 input secondary cylinders 6 of intake and exhaust chamber 521 by air inlet and exhaust valve 522 down; When crosshead piston bar 57 is up, discharge the return-air hole 571 that the gas that crosshead slipway 51 inner chambers have can be on crosshead and the space at crosshead pin 572 two ends, do not produce any pressure, the pressurized gas in the cylinder 53 then enters in the intake and exhaust chamber 541 interior in secondary compression inputs to gas holder 2 by porting 542 and intake and exhaust pipeline 4 input secondary cylinders 6 by the last air inlet and exhaust valve 540 of last intake and exhaust device 54;

The structure of secondary cylinder and working principle and one-level cylinder are basic identical, repeat no more.

Embodiment two:

The miniature oil-free lubrication reciprocating air pump of present embodiment is one-way fashion air pump (consulting accompanying drawing one figure four), comprise motor 1, gas storage filling 2, crankcase 3 and intake and exhaust pipeline 4, there are one-level cylinder 5 and secondary cylinder 6 in crankcase 1 top, the structure of described one-level cylinder 5 and secondary cylinder 6 the same (consulting accompanying drawing four), its cylinder block 5 is made up of the crosshead slipway 51 ' of lower end, the sealed letter body 52 ' at middle part, the cylinder 53 ' on top and intake and exhaust device 54 ' four parts at top; Be installed in the crosshead piston bar 57 ' in the crosshead slipway 51 ', the crosshead part of its lower end is joined with the connecting rod 31 ' in the crankcase 3, the upper end connect can be in cylinder 53 ' pistons reciprocating 55 '; The middle part of crosshead piston bar 57 ', be set with stuffing box packing assembly 56 ', and stuffing box packing assembly 56 ' is packed on the sealed letter body 52 ', it is made up of the Gland of installing from bottom to top 561 ', scraper ring 562 ' and guide ring 563 ', and its function is to stop the lubricant oil on crankcase 3 and the crosshead piston bar 57 ' to enter in the cylinder 53 '.

When crosshead piston bar 57 ' is up, discharge the return-air hole 571 ' that the gas that has in the crosshead slipway 51 ' inner chamber of crosshead piston bar bottom can be on crosshead and the space at crosshead pin 572 ' two ends, the pressurized gas that produces in the cylinder 53 ' then enters in the enterprising exhaust chamber 542 ' by the air inlet and exhaust valve 541 ' of top intake and exhaust device 54 ', and it is interior in secondary compression inputs to gas holder 2 to be input to secondary cylinder 6 by porting 543 ' and pipeline 4; When crosshead piston bar 57 ' was descending, the gas in the cylinder 53 ' cavity of resorption did not produce any pressure by letting out exhaust port 524 ' discharge on the sealed letter body 52 '.The structure of secondary cylinder and working principle and one-level cylinder are basic identical, repeat no more.

Claims

1. miniature oil-free lubrication reciprocating air pump, comprise motor, gas storage is irritated, crankcase and intake and exhaust pipeline, there are one-level cylinder and secondary cylinder in the crankcase top, it is characterized in that: described one-level cylinder and secondary cylinder, form by the crosshead slipway of lower end, the sealed letter body at middle part, the cylinder on top and intake and exhaust device four parts at top; Be installed in the crosshead piston bar in the crosshead slideway, the crosshead part of its lower end is joined with the connecting rod of crankcase, the upper end connect can be in cylinder pistons reciprocating; The middle part of crosshead piston bar is passed one and is overlapped the stuffing box packing assembly that is packed on the sealed letter body.

2. according to the described miniature oil-free lubrication reciprocating air pump of claim 1, it is characterized in that: the sealed letter body on the described cylinder block is provided with the intake and exhaust chamber, and has port and valve to be communicated with it.

3.According to claim 1 or 2 described miniature oil-free lubrication reciprocating air pumps, it is characterized in that: the stuffing box packing assembly in the described sealed letter body is made of scraper ring, block ring, seal ring and guide sleeve; Also can constitute by scraper ring and guide ring.