CN201155440Y

CN201155440Y - Diameter-changing double acting piston type compressor

Info

Publication number: CN201155440Y
Application number: CNU2007200369242U
Authority: CN
Inventors: 徐成军; 李玉根
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-10
Filing date: 2007-05-10
Publication date: 2008-11-26
Anticipated expiration: 2017-05-10

Abstract

The utility model discloses a reducer dual-function piton-typed compressor, which comprises an air cylinder, a piston, a link rod, an air suction valve and a discharging valve, wherein, a plurality of cylinder holes that are arranged on the air cylinder body is of a stage hole; the working surface of the piston is a stage cylindrical surface; a high pressure compressing cavity is arranged between an air cylinder stage hole wall and a piston stage cylindrical surface, which corresponds to each other in a sliding way; the high pressure compressing cavity is communicated with a high-pressure air suction port and a high-pressure air discharging port. The air cylinder stage hole is two sections of circular holes with different diameters; the piston stage cylindrical surface is provided with two cylindrical surfaces with different outer diameters; the two cylindrical surfaces are respectively provided with a packing ring; the high pressure compressing cavity is arranged between the two packing rings. The compressor has large air discharging quantity and high air discharging pressure, and can continuously work stably, and has good universality of the components, and has small volume, compact structure, and convenient utilization, maintenance and manufacturing.

Description

Reducing double-acting piston compressor

Technical field

The utility model relates to a kind of air compressor, relates in particular to reciprocating-piston air compressor, specifically the improvement of piston type air compressor cylinder and piston structure.

Background technique

Air compressor is that the source takes place compressed-air actuated air pressure, it is the device that the mechanical energy of prime mover is converted to the compressed air pressure energy, pressurized air is used because of its advantage such as safe, pollution-free has extremely widely, its application not only relates to many aspects such as chemical industry, weaving, food, metallurgy, system bottle, oil field pneumatic drill, and along with the improving constantly of various mechanical device automaticities, pressurized air is used to transmit energy more and more and realizes telecontrol.

Existing reciprocating-piston air compressor includes cylinder, piston and air valve, and cylinder and piston are formed compression square-cavity jointly.It is shaped on isometrical working hole on the cylinder block of cylinder, working surface of piston then is cylndrical surface such as external diameter such as grade correspondingly, and isometrical cylinder piston is positioned at the cylinder-bore of equal aperture slidably, and piston is with the cylinder-bore sealing or be separated into one or two-layer compression chamber.Under the effect of connecting rod, it is reciprocating in isometrical cylinder to have an isometrical piston, finishes processes such as air inlet, compression, exhaust, and by inhale, the outlet valve control gaseous enters and discharges cylinder, thereby realize the compression of gas.

Yet, the air compressor that has isometrical cylinder, piston at present also can only reach 0.7Mpa even the air compressor exhaust pressure of two-stage is the highest, is difficult to satisfy the application requirements of high exhaust pressure, the VF-9/7 air compressor that picture is relatively more commonly used, the highest exhaust pressure only is 0.7Mpa; Obtain higher exhaust pressure, then can only adopt the way of multi cylinder, piston more of connecting to improve the exhaust pressure of air compressor, otherwise it is overheated air compressor to occur, so that reduce compressor efficiency greatly, even can't proper functioning, seriously restricting the application area of piston type air compressor.

Though adopt the multi-staged air compression function of multi-cylinder series connection to play the effect of the exhaust pressure that improves compressor, but this structural type not only makes compressor become very heavy and huge, structure is complicated, the manufacture cost height, and use, safeguard and shift all very inconvenience.For this reason, people are badly in need of developing the piston type air compressor that a kind of volume is little, efficient is high, exhaust pressure is high.

The model utility content

Technical problem to be solved in the utility model is, a kind of reducing double-acting piston compressor is provided, its existing higher final exhaust pressure, and it is little to have volume again, the advantage of compact structure, and make easy to use.

In order to address the above problem, reducing double-acting piston compressor of the present utility model comprises cylinder, piston, connecting rod, Aspirating valves and outlet valve, and the cylinder hole on the described cylinder block is a step hole, and the working surface of described piston is the step cylinder; Between described slip corresponding cylinder step hole wall and piston step cylinder the high pressure compressed chamber is arranged, this high pressure compressed chamber is connected with high pressure intakeport and high-pressure exhaust.

After adopting said structure, because the cylinder hole of cylinder is a step hole, the working surface of piston is the step cylinder, and constituted a high pressure compressed chamber between slip corresponding cylinder step hole wall and the piston step cylinder, so just in the situation that does not increase air compressor critical components such as cylinder, piston, increased a high pressure compressed chamber again, the usefulness and the utilization ratio of parts such as existing cylinder and piston have been given full play to, under the situation that has the multistage compression function equally, significantly reduced the volume of air compressor, made that the structure of compressor is compact more.Also owing to adopt step hole and step cylindrical structure, most of air compressor parts still adopt general or standarized component, simultaneously can be poor by the different step footpath of design, and obtain different compression ratios, this not only makes simple in structure, make, use and keep in repair and all become comparatively convenient, and can design different exhaust pressure according to different use condition.Because the utility model is provided with this step hole and step cylindrical structure, during work, the reciprocating stroke of piston is working stroke, and does not have the backlash journey again; Can improve the working efficiency of air compressor so greatly, can reduce the air compressor rotating speed effectively again, then reduce air temperature, the reduction of air temperature is played crucial effects for raising air compressor working efficiency, reduction compression horsepower, and can reduce inertial force effectively, reduce vibration significantly, it is more steady to turn round.So the utlity model has higher working efficiency, and save energy consumption.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model reducing double-acting piston compressor is described in further detail:

Fig. 1 is the structure sectional view of a kind of embodiment of the utility model reducing double-acting piston compressor.

Fig. 2 is the cylinder parts drawing in the structure shown in Figure 1.

Fig. 3 is the piston details figure in the structure shown in Figure 1.

Fig. 4 is a kind of application two cylinder air compressor structure schematic representation of the present utility model.

Fig. 5 is the another kind of two cylinder air compressor structure schematic representation of the present utility model of using.

Fig. 6 is that another uses two cylinder air compressor structure schematic representation of the present utility model.

Embodiment

In reducing double-acting piston compressor shown in Figure 1, cylinder 1 usefulness spheroidal graphite cast iron is made, and the cylinder body outer side surface of cylinder 1 is provided with the wind-cooling heat dissipating fin, is fixed with cylinder head 2 at the top of cylinder 1, and Aspirating valves 4 and outlet valve 3 are housed on cylinder head 2.As shown in Figure 2, cylinder 1 cylinder body is provided with the cylinder hole, and this cylinder hole is a step hole that connects, and this step hole comprises adjacent two sections circular holes with different apertures, and the aperture of epimere circular hole is greater than the aperture of hypomere circular hole.As shown in Figure 3, the work cylinder of piston 7 equally also is adjacent two sections cylndrical surface with various outer diameter, the aperture that these two sections cylndrical surface outside dimensions and cylinder 1 are corresponding is corresponding and be slidingly matched, and is respectively equipped with the mounting groove of piston ring 6 at two sections cylndrical surface end positions of piston 7.Show that as Fig. 1 piston 7 places in the cylinder hole of cylinder 1 slidably, have and constitute high pressure compressed chamber 8 between the hole wall of different apertures step hole and various outer diameter piston cylinder that this high pressure compressed chamber 8 is located seal ring 6 and sealed by upper and lower two sections of piston 1.On the outer side surface of cylinder 1, also be provided with high-pressure exhaust 9 and high pressure intakeport 12, this high-pressure exhaust 9 and high pressure intakeport 12 all are connected with high pressure compressed chamber 8, high pressure air exhaust valve (not drawing among the figure) is housed on the high-pressure exhaust 9, high pressure Aspirating valves (equally also not drawing) is housed on the high pressure intakeport 12.Connecting rod 11 is hinged on the piston 7 by support 13 and wrist pin 10, with driven plunger 7 to-and-fro motion in cylinder 1.In said structure, in fact cylinder 1 and piston 7 have constituted 8 two air compression chambeies of low pressure compression chamber 5 and high pressure compressed chamber, low pressure compression chamber 5 is between piston 7 end faces and cylinder head 2, and high pressure compressed chamber 8 is then as mentioned above between two seal rings 6 of piston 7.During work, compression chamber sucks air, another compression chamber pressurized air then, and vice versa, the reciprocating stroke of piston 7 is all in running order.Change the two sector holes footpath of cylinder 1 step hole and two sections work cylndrical surface of piston 7, can change the compression ratio in high pressure compressed chamber 8, thereby get different exhaust pressure and air displacement.

Fig. 4 illustrates a kind of structural representation of using the utility model reducing double-acting piston compressor, and the air compressor of this structure comprises a single-acting cylinder and reducing double-acting cylinder of the present utility model.Because of the Aspirating valves 4 of ambient air on the reducing double-acting cylinder sucks low pressure compression chamber 5 with air, after these low pressure compression chamber 5 compressions, discharge by outlet valve 3, the compression chamber that the band of discharging is pressed, band wet body enters single-acting cylinder successively through the Aspirating valves of supercooler, oil and water seperator, single-acting cylinder, come back to the high pressure compressed chamber 8 of reducing double-acting cylinder after the compression more successively through single-acting outlet valve, cooler, oil and water seperator, and supply with the user through the outlet valve that is connected with high pressure compressed chamber 8.

Fig. 5 shows the another kind of structural representation of using the utility model reducing double-acting piston compressor.The air compressor of this structure comprises a single-acting cylinder and a reducing double-acting cylinder of the present utility model equally.Ambient air compresses after cooler, oil and water seperator and Aspirating valves 4 enter low pressure compression chamber 5 through single-acting cylinder, pressurized air after the compression comes back in the high pressure compressed chamber 8 of reducing double-acting cylinder through outlet valve 3, another cooler and oil and water seperator again, and the pressurized gas after overcompression are supplied with the user by outlet valve.

Fig. 6 shows another structural representation of using the utility model reducing double-acting piston compressor.The compressor of this structure has comprised two groups of reducing double-acting cylinders.Ambient air sucks the low pressure compression chamber 5 of first group of reducing double-acting cylinder, and compression is after outlet valve 3, cooler, oil and water seperator and second group of reducing double-acting cylinder Aspirating valves 4 enter second group low pressure compression chamber.After second group of compression cylinder compression, get back to first group high pressure compressed chamber 8 again through outlet valve, cooler, oil and water seperator, air after the compression is got back to second group high pressure compressed chamber again through cooler, oil and water seperator, the pressurized gas after the compression are discharged and used for the user through high pressure air exhaust valve.In this structure, in fact air has passed through the level Four compression, thereby has obtained higher exhaust pressure under the situation that keeps original air displacement, and this compressor four-stage compressor volume of the prior art relatively greatly reduces, and structure is significantly simplified.

Above-mentionedly only enumerate preferred embodiment more of the present utility modelly, but the utility model is not limited thereto, and under the situation of the utility model basic principle, can also make many conversion and improvement.As the step cylinder of cylinder step in the utility model and piston, both can be two rank, also can be three rank, quadravalence etc. are multistage.Cylinder both can be cast inblock, also can be interior dress cylinder sleeve; Both can be open type, also can be enclosed.Both can be horizontal, vertical, symmetrical structure, also can be symmetric type or angled type structure, or the like.Therefore, so long as cylinder has step cylinder hole and piston has the step work cylinder, all should be considered as falling into protection domain of the present utility model.

Claims

1, a kind of reducing double-acting piston compressor, comprise cylinder (1), piston (7), connecting rod (11), Aspirating valves (3) and outlet valve (4), it is characterized in that: the cylinder hole on described cylinder (1) cylinder body is a step hole, and the working surface of described piston (7) is the step cylinder; Between described slip corresponding cylinder (1) step hole wall and piston (7) step cylinder high pressure compressed chamber (8) is arranged, this high pressure compressed chamber (8) is connected with high pressure intakeport (12) and high-pressure exhaust (9).

2, reducing double-acting piston compressor according to claim 1, it is characterized in that: described cylinder (1) step hole is adjacent two sections circular holes with different apertures, described piston (7) step cylinder is adjacent two sections cylndrical surface with various outer diameter, is respectively arranged with seal ring (6) on these two sections cylndrical surface; Described high pressure compressed chamber (8) is positioned between two seal rings (6).

3, reducing double-acting piston compressor according to claim 1 is characterized in that: low pressure compression chamber (5) is positioned between piston (7) end face and the cylinder head (2), and described cylinder head (2) is provided with Aspirating valves (3) and outlet valve (4).

4, reducing double-acting piston compressor according to claim 1 is characterized in that: described cylinder (1) is for single.

5, according to each described reducing double-acting piston compressor among the claim 1-4, it is characterized in that: be fixed with the high pressure Aspirating valves on the described high pressure intakeport (12), high-pressure exhaust is fixed with high pressure air exhaust valve on (9).

6, according to each described reducing double-acting piston compressor among the claim 1-3, it is characterized in that: described cylinder (1) is a plurality of series connection.