CN201314285Y

CN201314285Y - Piston type dual-action multi-cylinder pump air device of air compressor

Info

Publication number: CN201314285Y
Application number: CNU2008201712041U
Authority: CN
Inventors: 陈人德; 陈纪舣; 陈如英
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-25
Filing date: 2008-12-25
Publication date: 2009-09-23
Anticipated expiration: 2018-12-25

Abstract

The utility model belongs to the technical field of machinery and relates to an air compressing technology, in particular to a piston type dual-action multi-cylinder pump air device. The piston type dual-action multi-cylinder pump air device comprises a plurality of bidirectional air cylinder bodies, and each air cylinder body is composed of a piston, a piston rod and a cylinder body. The cylinder body is articulated on the eccentric position of a driven gear, the piston is arranged in the cylinder body and is connected with one end of the piston rod into one, and the other end of the piston rod is extended outside the cylinder body. The piston type dual-action multi-cylinder pump air device further comprises a base and a main shaft which is connected on the base. An air pipe shaft is fixed at the outer end on the base, the piston rod is articulated on the air pipe shaft at the outer end of the base, a driving gear and the driven gear are arranged on the base, one end of the main shaft is penetrated through the base and is fixedly connected with the driving gear, the other end of the main shaft is connected with a power mechanism, and the driven gear which is connected on the base is meshed with the driving gear. The piston type dual-action multi-cylinder pump air device can be assembled in single-layer and multi-layer manners, overcomes pulsation phenomenon of single-cylinder aeration, and leads high working efficiency.

Description

The piston type double-acting multi-cylinder gas pumping apparatus of air compressor

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of piston type double-acting multi-cylinder gas pumping apparatus of air compression technology, particularly a kind of air compressor.

Background technique

Air compressor normally pumps air in the gas holder with air pump, early stage piston air pump all is that the motivational drive piston rod promotes piston reciprocates, end at cylinder is provided with check valve, can only a direction job, power is being made idle work when one-way intake, unidirectional air feed, the backhaul of piston, and this is single-acting, and working efficiency and energy utilization rate are all lower, and aeration quantity is less.Sprout the single pump piston formula double-acting pump device of air that has designed [application number: CN200820120698.0] air compressor in order to improve charging efficiency the applicant; it is diligent with the work of 1.1 kilowatts of 0.75 kilowatt the suitable single-actings of motor to have done simultaneously overtesting; so-called double-action is exactly that cylinder body is all inflated back and forth; by its aeration quantity of one-period theoretically is the nearly twice of common piston type air compressor; but the applicant finds its inflation tolerance leeway that also has greatly improved in the single-cylinder aerating process; and there is pulsation phenomenon in single cylinder in gas replenishment process; usually in the multi cylinder structure, need in addition to drive a plurality of pistons with a bent axle; but the manufacturing process complexity of bent axle; Heavy Weight; and occupy quite high cost ratio, therefore on original basis, designed double-acting multi-cylinder gas pumping apparatus.

Summary of the invention

The purpose of this utility model is at the existing the problems referred to above of existing single-acting, and the piston type double-acting multi-cylinder gas pumping apparatus that a kind of working efficiency and energy utilization rate all are improved, manufacturing price is cheap is provided.

Above-mentioned purpose can realize by technological scheme described below: a kind of piston type double-acting multi-cylinder gas pumping apparatus, comprise by piston, several beidirectional cylinder block that piston rod and cylinder body are formed, piston is positioned at cylinder body and is fixed as one with an end of piston rod, the other end of piston rod stretches out cylinder body, it is characterized in that this device also comprises base and is connected main shaft on the base, outer end on the base is fixed with the gas transmission tubular axis, piston rod is hinged on the gas transmission tubular axis of outer end of base, on base, also be provided with driving gear and driven gear, one end of main shaft passes base and is connected mutually with driving gear, the other end of main shaft is connected with power mechanism, driven gear is connected on the base and is meshed with above-mentioned driving gear, and above-mentioned cylinder body is hinged on the eccentric position of driven gear.

Here at first be to drive main shaft by power mechanism to rotate, main shaft drives connected driving gear simultaneously and rotates, because driven gear is meshed with driving gear, driving gear drives the driven gear rotation again like this, because piston rod one end is hinged on the gas transmission tubular axis of base, and cylinder body is connected on the eccentric position of driven gear, driven gear drives cylinder body and does two kinds of motions of reciprocally swinging like this, so just make the relative cylinder body of piston rod do oscillating motion with piston, realize air-breathing and two processes of compression are all inflated, and gas is discharged by the gas transmission tubular axis.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, described power mechanism is motor or oil hydraulic motor, between motor or oil hydraulic motor and main shaft, also be provided with driving mechanism, this driving mechanism comprises drive pulley, driven pulley and drivign belt, drive pulley is connected on motor or the hydraulic motor output shaft, driven pulley is connected on the main shaft, and above-mentioned drivign belt connects drive pulley and driven pulley.Here behind drive pulley and driven pulley, drive main shaft by motor or oil hydraulic motor as power output and rotate, guarantee the stationarity of transmission of power.

As another kind of situation, this pump device adopts multilayer to assemble, described main shaft passes a plurality of bases simultaneously, and on corresponding base, cylinder block, driving gear and driven gear are installed, the other end at main shaft is connected with shared power mechanism, on the shared main shaft between the adjacent layer shaft coupling is set.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, have left end cap and right end cap on the described beidirectional cylinder body, described left end cap and right end cap all have inlet hole, air inlet position is equipped with check valve, piston and piston rod are made the hollow structure that communicates, wherein has radial clearance between all edges, piston two ends and the inboard wall of cylinder block, the annular groove that middle of piston is shaped on ccontaining piston ring and allows piston ring axially to move back and forth, piston ring and inboard wall of cylinder block are closely connected to be slidingly matched, and the bottom land of annular groove has a plurality of radial direction through hole that communicate with piston cavity.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, described radial direction through hole is formed on the centre of annular groove bottom land so that piston ring when in groove, sliding to the left and right sides trough rim through hole all can expose.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, the handing-over end of described piston rod and piston is made reaming, and the one-way valve of being made up of valve seat, steel ball, spring is housed in the hole.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, the quantity of described cylinder block and driven gear is 4 every layer.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, described piston rod communicates with gas holder by the pneumatic tube on the gas transmission tubular axis, in the outlet port of gas transmission tubular axis pressure display table is installed also.

In above-mentioned piston type double-acting multi-cylinder gas pumping apparatus, the inlet hole of left and right sides end cap is equally distributed 8-16 of circle spacing, inlet hole arranged outside air-strainer.

Compared with prior art, the advantage of this piston type double-acting multi-cylinder gas pumping apparatus is:

1, this pump device can also can multilayer be assembled in the individual layer assembling, mainly utilizing cylinder body to make reciprocally swinging makes piston relatively reciprocatingly slide in cylinder body like this, and piston and piston rod are regulated automatically all the time as one and are kept straight line motion with cylinder body, can not cause cylinder wall to lose circle, long service life, and from the piston rod exhaust, overcome the pulsation phenomenon of single-cylinder aerating simultaneously, high working efficiency, the aeration quantity that makes a round trip is near 2 times of the single piston air pump of same volume, and working efficiency and energy utilization rate obviously improve, and aeration quantity is also bigger, air pressure can reach middle pressure scope, and the free air output quantity reaches per minute 7-20M ³

2, this apparatus structure is simple, does not have traditional bent axle, and volume-diminished can reduce operating cost and cost of production greatly like this, and sound is low, and it is also low to generate heat, and fault is few.

3, pressure display table all is housed on each cylinder body, can comes into plain view to fault like this, also convenient and do not need long-time shutdown if any fault repair, as long as put the spare package of a cylinder block, just can keep frequent air feed.

Description of drawings

Fig. 1 is the overall structure schematic representation after the individual layer of this piston type double-acting multi-cylinder gas pumping apparatus is assembled.

Fig. 2 is the plan structure schematic representation of this piston type double-acting multi-cylinder gas pumping apparatus.

Fig. 3 is the overall structure schematic representation of single cylinder block in this piston type double-acting multi-cylinder gas pumping apparatus.

Fig. 4 is the one-way valve in this piston type double-acting multi-cylinder gas pumping apparatus and the structural representation of piston ring face to face.

Fig. 5 is the structural representation that an end of single cylinder body is done two kinds of motions of reciprocally swinging in this piston type double-acting multi-cylinder gas pumping apparatus.

Fig. 6 is the overall structure schematic representation after the multilayer of this piston type double-acting multi-cylinder gas pumping apparatus is assembled.

Among the figure, 1, cylinder body; 1a, left air cavity; 1b, right air cavity; 2, piston; 2a, radial direction through hole; 3, piston rod; 3a, endoporus; 4, base; 5, main shaft; 6, driving gear; 7, driven gear; 8, drive pulley; 9, driven pulley; 10, motor; 11, left end cap; 11a, inlet hole; 13, right end cap; 14, check valve; 15, piston ring; 15a, annular groove; 16, seal ring; 17, pressure display table; 18, gas transmission tubular axis; 19, drivign belt; 20, eccentric shaft; 21, bearing; 22, valve seat; 23, steel ball; 24, spring; 25, shaft coupling; 26, pneumatic tube.

Embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, but the utility model is not limited to these embodiments.

Embodiment one

As Fig. 2, Fig. 3 and shown in Figure 4, this piston type double-acting multi-cylinder gas pumping apparatus, comprise 4 cylinder block forming by piston 2, piston rod 3 and cylinder body 1, piston 2 is positioned at cylinder body 1 and is connected as a single entity with an end of piston rod 3, and the other end of piston rod 3 stretches out cylinder body 1.This pump device makes piston 2 and cylinder body 1 make relative linear reciprocating motion reciprocally swinging simultaneously mainly by driving the motion of cylinder body 1.

This installs used cylinder block is to have double-action, and specifically, these cylinder body 1 two ends are connected with left end cap 11, right end cap 13 screws respectively, and left end cap 11, right end cap 13 have screw hole and equally distributed 16 inlet hole 11a of circle spacing.For the negative effect that dust in air produced that reduces to be inhaled into,, utilize air-strainer that air inlet is filtered at inlet hole 11a arranged outside air-strainer.Also have the central shaft hole that seal ring 16 is housed at right end cap 13, the inner side surface of left end cap 11 and right end cap 13 inlet hole 11a respectively is equipped with the diaphragm type check valve 14 that is made of rubber valve plate or elastic metallic valve block, piston 2 in the cylinder body 1 is made hollow structure, has radial clearance D between all edges, its two ends and cylinder body 1 inwall, the annular groove 15a that the middle part is shaped on the rectangular or L shaped piston ring in ccontaining cross section 15 and allows piston ring 15 axially to move back and forth, the centre of the bottom land of annular groove 15a has equally distributed 4-8 radial direction through hole 2a, the left air cavity 1a or the right air cavity 1b of cylinder body 1 are communicated with the inner chamber of piston 2, radial direction through hole 2a is formed on the centre of annular groove 15a bottom land so that piston ring 15 when in groove, sliding to the left and right sides trough rim through hole all can expose.Piston rod 3 is also made the hollow structure with endoporus 3a, the endoporus 3a of piston rod 3 communicates with the inner chamber of piston 2 and is fixedly connected, the seal ring 16 that the other end of piston rod 3 passes right end cap 13 also is communicated with gas holder by the pneumatic tube 26 that gas transmission tubular axis 18 connects, and at the place, air outlet of this gas transmission tubular axis 18 pressure display table 17 is installed also.As shown in Figure 4, make reaming at the piston rod 3 and the handing-over end of piston 2 in addition, the one-way valve of being made up of valve seat 22, steel ball 23, spring 24 is housed in the hole.As shown in Figure 4, piston ring 15 can adopt self lubricating material, with two piston rings 15 installing face to face, the pressure of dependence gas makes the resiliently deformable of piston ring 15 lips, be that gas is come in from the back side of piston ring 15, force the lip of piston ring 15 to shrink inwards, gas can be by entering annular groove 15a like this, radial direction through hole 2a goes out from the endoporus of

piston rod

3, and 15 pairs of gases of coming in of another piston ring to be head-on lip press bigger and bigger so tightly be attached on the wall of cylinder body 1, thereby gas is gone out from the endoporus of piston rod 3.

As shown in Figure 1, in order to realize the double-acting multi-cylinder function, this pump device can adopt the individual layer assembling also can adopt the multilayer assembling, adopt the individual layer assembling in the present embodiment, comprise base 4 and be connected main shaft 5 on the base 4, outer end on the base 4 is fixed with gas transmission tubular axis 18, joint at base 4 and main shaft 5 is equipped with bearing 21, piston rod 3 is hinged on the outer end gas transmission tubular axis 18 of base 4, base 4 is provided with 1

driving gear

6 and 4 driven gears 7, one end of main shaft 5 passes base 4 and is connected mutually with driving gear 6, driven gear 7 is connected on the base 4 and is meshed with above-mentioned

driving gear

6,4 above-mentioned cylinder bodies 1 are connected on the eccentric position of 4 driven gears 7 by eccentric shaft 20 respectively, and bearing 21 also is installed on eccentric shaft 20, and the other end of main shaft 5 is connected with power mechanism.As shown in Figure 1, driven gear 7 is rotated, thereby make the cylinder body 1 relative piston 2 that is hinged on the driven gear 7 reciprocating.Power mechanism in the present embodiment is a motor 10, and power mechanism also can be an oil hydraulic motor etc. certainly.In order to guarantee stability of transmission, between motor 10 and main shaft 5, also be provided with driving mechanism, this driving mechanism comprises the drive pulley 8 of path, the driven pulley 9 and the drivign belt 19 in big footpath, drive pulley 8 is connected on the output shaft of motor 10, driven pulley 9 is connected on the main shaft 5, and drivign belt 19 connects drive pulley 8 and driven pulley 9.

The working procedure of this double-acting multi-cylinder gas pumping apparatus is as follows:

At first driving main shaft 5 by motor 10 outputting powers behind drive pulley 8 and driven pulley 9 rotates, the driving gear 6 that is connected in like this on the main shaft 5 just rotates, driving 4 driven gears 7 that are meshed with it simultaneously rotates, eccentric shaft 20 on 4 driven gears 7 drives an end of 4 cylinder bodies 1 respectively and does two kinds of motions of reciprocally swinging, as Fig. 5 and shown in Figure 1, piston rod 3 is done oscillating motion with piston 2 relative cylinder bodies 1.Each position of the 90 ° of alternate compression of being separated by when making reciprocally swinging as 4 cylinder bodies 1 among Fig. 2, is that cylinder body 1 moves from right to left when driven gear 7 drives cylinder body 1 for 180 ° from the initial angle rotation, as shown in phantom in Figure 3, the air cavity on piston 2 left sides in the cylinder body 1 increases, air pressure reduces, ambient atmosphere is backed down check valve 14 from inlet hole 11a and is entered air cavity, because in cylinder body 1 sliding process from right to left, the pressurized gas that right air cavity 1b is just blocked on the left side that piston ring 15 is forced to be close to piston ring groove 15a simultaneously can not enter left air cavity 1a, the inlet hole 11a of right end cap 13 is by the rubber valve plate capping on the check valve 14 simultaneously, compressed gas is successively from the clearance D between cylinder body 1 and the piston 2, the radial direction through hole 2a of annular groove 15a bottom land enters piston 2 inner chambers, export behind the pneumatic tube 26 that gas transmission tubular axis 18 connects to gas holder through the endoporus 3a of piston rod 3 again, shown in arrow among Fig. 3, and left air cavity 1a finishes breathing process simultaneously.

When driven gear 7 drive cylinder bodies 1 continue to rotate 180 ° again, at this moment just driving cylinder body 1 slides from left to right, piston ring 15 is forced to be close to the right of piston ring groove 15a, the pressurized gas that just blocks left air cavity 1a can not enter right air cavity 1b, thereby compress the gas in the left air cavity 1a, the inlet hole 11a of left end cap 11 is by the rubber valve plate capping on the check valve 14, gas in the air cavity on the left side is compressed, compressed gas is successively from the clearance D between cylinder body 1 and the piston 2, the radial direction through hole 2a of annular groove 15a bottom land enters piston 2 inner chambers, endoporus 3a through piston rod 3 exports gas holder to again, shown in arrow among Fig. 3, and right air cavity 1b finishes breathing process simultaneously, and the realization bidirectional inflating goes round and begins again.

Embodiment two

Present embodiment is basic identical with embodiment one structure and principle, different place is: as shown in Figure 6, here piston type double-acting multi-cylinder gas pumping apparatus is by adopting multilayer to assemble, be to adopt three layers to assemble in the present embodiment, during assembling shared main shaft 5 is passed a plurality of bases 4 simultaneously, and on corresponding base 4, cylinder block is installed, driving gear 6 and driven gear 7 etc., wherein the cylinder block level arranges, here on the shared main shaft 5 between the adjacent layer, shaft coupling 25 is set, conveniently assemble, and shared motor 10 of the pump device of multilayer or oil hydraulic motor, the driven pulley 9 in drive pulley 8 and big footpath, relying on motor 10 outputting powers to drive main shaft 5 behind drive pulley 8 and driven pulley 9 rotates, make each layer go up pump device work, and the pneumatic tube that is connected with gas transmission tubular axis 18 by separately 26 with gas storage in gas holder.

Claims

1, a kind of piston type double-acting multi-cylinder gas pumping apparatus, comprise by piston (2), several beidirectional cylinder block that piston rod (3) and cylinder body (1) are formed, it is characterized in that, piston (2) is fixed as one with an end of piston rod (3), the other end of piston rod (3) stretches out cylinder body (1), this device also comprises base (4) and is connected main shaft (5) on the base (4), outer end on the base (4) is fixed with gas transmission tubular axis (18), piston rod (3) is hinged on the gas transmission tubular axis (18) of outer end of base (4), on base (4), also be provided with driving gear (6) and driven gear (7), one end of main shaft (5) passes base (4) and is connected mutually with driving gear (6), the other end of main shaft (5) is connected with power mechanism, driven gear (7) is connected that base (4) is gone up and is meshed with above-mentioned driving gear (6), and above-mentioned cylinder body (1) is hinged on the eccentric position of driven gear (7).

2, piston type double-acting multi-cylinder gas pumping apparatus according to claim 1, it is characterized in that, described power mechanism is motor (10) or oil hydraulic motor, between motor (10) or oil hydraulic motor and main shaft (5), also be provided with driving mechanism, this driving mechanism comprises drive pulley (8), driven pulley (9) and drivign belt (19), drive pulley (8) is connected on motor (10) or the hydraulic motor output shaft, driven pulley (9) is connected on the main shaft (5), and above-mentioned drivign belt (19) connects drive pulley (8) and driven pulley (9).

3, piston type double-acting multi-cylinder gas pumping apparatus according to claim 1, it is characterized in that, this pump device adopts multilayer to assemble, described main shaft (5) passes a plurality of bases (4) simultaneously, and at last cylinder block, driving gear (6) and the driven gear (7) installed of corresponding base (4), the other end at main shaft (5) is connected with shared power mechanism, on the shared main shaft (5) between the adjacent layer shaft coupling (25) is set.

4, piston type double-acting multi-cylinder gas pumping apparatus according to claim 1, it is characterized in that, have left end cap (11) and right end cap (13) on the described beidirectional cylinder body (1), described left end cap (11) and right end cap (13) all have inlet hole (11a), inlet hole (11a) locates to be equipped with check valve (14), piston (2) and piston rod (3) are made the hollow structure that communicates, wherein has radial clearance between all edges, piston (2) two ends and cylinder body (1) inwall, the annular groove (15a) that the middle part of piston (2) is shaped on ccontaining piston ring (15) and allows piston ring axially to move back and forth, piston ring (15) and closely connected being slidingly matched of cylinder body (1) inwall, the bottom land of annular groove (15a) has a plurality of radial direction through hole (2a) that communicate with piston (2) inner chamber.

5, piston type double-acting multi-cylinder gas pumping apparatus according to claim 4 is characterized in that, described radial direction through hole (2a) is formed on the centre of annular groove (15a) bottom land so that piston ring (15) when in groove, sliding to the left and right sides trough rim through hole all can expose.

According to claim 1 or 4 described piston type double-acting multi-cylinder gas pumping apparatus, it is characterized in that 6, described piston rod (3) is made reaming with the handing-over end of piston (2), and the one-way valve of being made up of valve seat (22), steel ball (23), spring (24) is housed in the hole.

According to claim 1 or 4 described piston type double-acting multi-cylinder gas pumping apparatus, it is characterized in that 7, the piston ring (15) on the piston (2) adopts self lubricating material, and install face to face, fix and do not slide.

8, piston type double-acting multi-cylinder gas pumping apparatus according to claim 3 is characterized in that, the quantity of described cylinder block and driven gear (7) is 4 every layer.

9, according to claim 1 or 4 described piston type double-acting multi-cylinder gas pumping apparatus, it is characterized in that, described piston rod (3) communicates with gas holder by the pneumatic tube (26) on the gas transmission tubular axis (18), in the outlet port of gas transmission tubular axis (18) pressure display table (17) is installed also.

10, piston type double-acting multi-cylinder gas pumping apparatus according to claim 4 is characterized in that, the inlet hole of left and right sides end cap (11a) is equally distributed 8-16 of circle spacing, inlet hole (11a) arranged outside air-strainer.