CN201236792Y

CN201236792Y - Non-oil air compressor piston

Info

Publication number: CN201236792Y
Application number: CNU2008200783088U
Authority: CN
Inventors: 于元
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-12
Filing date: 2008-08-12
Publication date: 2009-05-13
Anticipated expiration: 2018-08-12

Abstract

The utility model relates to an oil-free air-compressor piston, which comprises a piston body. A cylindrical displacement restrictor with a raised head at the upper end thereof is connected on the top surface of the piston body through a bolt, airflow grooves are evenly distributed on the cylindrical surface of the displacement restrictor, a spring ring positioned under the raised head and a circular-ring valve plate positioned under the spring ring are sleeved on the cylindrical surface of the displacement restrictor, an annular air-way groove is formed on the top surface of the piston body corresponding to the circular-ring valve plate, and air inlet through holes communicated with the inner cavity of the piston body are evenly distributed in the annular air-way groove. The utility model changes the prior working mode that an air compressor pumps gas from the upper part of the piston, so that the gas enters the air compressor from the lower part of the piston body, when the gas flows through a crank connecting rod mechanism, the piston body and the cylinder body from the upper part of the piston to the lower part thereof, the mechanism and the components are cooled. Therefore, the temperature rise caused by friction of motions of the crank connecting rod mechanism, the piston body and the cylinder body is reduced, the working performance of the oil-free air-compressor piston is improved, and the service life can be prolonged.

Description

The oil-free air compressor piston

Technical field

The utility model relates to air compressor, is specifically related to a kind of oil-free air compressor piston.

Background technique

Oil-free air compressor is a kind of air compressor that does not have oil lubrication in cylinder and in the motion.Oil-free air compressor not only makes air-channel system not have contaminated with oil mist, clean pressurized air can be provided, and can be because hydrocarbon exists the explosion risk of hiding, have fuel-economizing, environmental protection, easy to operate and advantage that maintenance expenses is few, be widely used in fields such as food, medicine, weaving, chemical industry and military project.But because the oil-free air compressor oil-free lubrication makes the moving element friction aggravation that is in contact with one another, temperature rise improves, and reduces the working efficiency and the working life of air compressor.Though application along with the self lubricating material of the development of oil-free lubrication technology in recent years and some function admirables, make oil-free air compressor significant progress arranged aspect all drawbacks of bringing because of temperature arrising caused by friction solving, but for the piston that is in the work high-temperature zone, cylinder sleeve and crankshaft ﹠ connecting, owing to be difficult to effectively be cooled off, wearing and tearing aggravation because of temperature arrising caused by friction causes remains the main cause that influences air compressor raising in working life.

Summary of the invention

The purpose of this utility model is at the problems referred to above, a kind of oil-free air compressor piston is provided, this oil-free air compressor piston is by changing the intake method of present oil-free air compressor, the piston, cylinder sleeve and the crankshaft ﹠ connecting that are in the work high-temperature zone are effectively cooled off, thereby reduce the temperature arrising caused by friction of oil-free air compressor, improve service behaviour, improve working life.

The technological scheme that realizes above-mentioned purpose is: a kind of oil-free air compressor piston, it includes piston body, bolt through running through the piston body end face on the end face of piston body connects the cylindrical snubber that a upper end has plush copper, on the cylndrical surface of snubber, be evenly distributed with the perpendicular airslide of putting, being set in has one to place spring ring and below the plush copper to place ring valve block below the spring ring on the cylndrical surface of snubber, position corresponding to the ring valve block on the end face of piston body is provided with an air flue annular groove, is evenly distributed with the air inlet through hole that is communicated to the piston body inner chamber in the air flue annular groove.

Above-mentioned air inlet through hole is to the outward-dipping through hole of piston body end face by the piston body inner chamber.

The utility model has changed the working method of air compressor in the past by piston top air inlet, gas is entered by the below of piston body, in gas is flowed through the process of crankshaft ﹠ connecting and piston body and cylinder body on by the piston lower direction, said mechanism and parts are effectively cooled off, thereby the kinetic friction that reduces crankshaft ﹠ connecting, piston and cylinder body heats up, improve the service behaviour of oil-free air compressor, improve working life.

Air inlet through hole of the present utility model can adopt outward-dipping setting, helps reducing the impact force of gas to valve block, improves the working life of valve block, and strengthens the cooling effect of air-flow to casing wall.

Description of drawings

Fig. 1 is this oil-free air compressor piston structure schematic representation;

Fig. 2 is that the air inlet through hole of this oil-free air compressor piston is obliquely installed structural representation.

Embodiment

In conjunction with the accompanying drawings embodiment of the present utility model is described.

As accompanying drawing 1, this oil-free air compressor piston includes piston body 1, bolt 2 through running through the piston body end face on the end face of piston body connects the cylindrical snubber 3 that a upper end has plush copper, on the cylndrical surface of snubber, be evenly distributed with the perpendicular airslide of putting 4, being set in has one to place spring ring 5 and below the plush copper to place ring valve block 6 below the spring ring on the cylndrical surface of snubber, position corresponding to the ring valve block on the end face of piston body is provided with an air flue annular groove 7, is evenly distributed with the air inlet through hole 8 that is communicated to the piston body inner chamber in the air flue annular groove.

As accompanying drawing 2, when the utility model was specifically implemented, air inlet through hole 8 can be arranged to by the piston body inner chamber to the outward-dipping through hole of piston body end face.

Claims

1, a kind of oil-free air compressor piston, comprise piston body (1), it is characterized in that: the bolt (2) of end face through running through the piston body end face at piston body (1) connects the cylindrical snubber (3) that a upper end has plush copper, on the cylndrical surface of snubber, be evenly distributed with the perpendicular airslide of putting (4), being set in has one to place spring ring (5) and below the plush copper to place ring valve block (6) below the spring ring on the cylndrical surface of snubber, position corresponding to the ring valve block on the end face of piston body is provided with an air flue annular groove (7), is evenly distributed with the air inlet through hole (8) that is communicated to the piston body inner chamber in the air flue annular groove.

2, oil-free air compressor piston according to claim 1 is characterized in that: described air inlet through hole (8) is to the outward-dipping through hole of piston body end face by the piston body inner chamber.