CN2363081Y - Miniature oil-free air compression pump - Google Patents

Abstract

The utility model relates to a miniature oil-free air compression pump. The compression pump of the prior art has unreasonable structure and poor radiation effect. The utility model use a support frame to support a motor rotor and a motor stator, parts of a cylinder, etc. are installed above the support frame, and air conduction is formed. A fan-shaped fan vane and an extended fan housing cause the radiation effect to be well; a bearing sleeve inlaid at the outer wall of a bearing of the pump causes the pump to have low noise and long service life. The utility model has the advantages of simplified structure, reduced weight, and long service life. The utility model is popular product for the industry of medical, health care, analytical apparatus, etc.

Description

Miniature oil-free air compressor pump

The utility model is the mechanical ﹠ electrical technology field, is a kind of oil-free air compressor pump.

The oil-free air compressor pump is mainly used in industries such as medical apparatus, rigorous analysis instrument, food processing, light industry, environmental protection, and the compressed gas source that does not have the oil cleaning is provided.Existing miniature oil-free air compressor pump has two kinds from formal branch at present, and a kind of is diaphragm type, and it utilizes the dilatation of diaphragm that the displacement generating period is changed.Diaphragm constantly is stretched under higher temperature during this class compressor pump work, and is easily aging, shortened working life.Another kind is a reciprocating piston type, divides two kinds of single cylinder and twin-tubs, though pressure flow greater than the diaphragm type compressor pump, complex process, it is not smooth to dispel the heat, and influences motor working life.

The purpose of this utility model is that a kind of radiating effect of design is good, long service life, miniature oil-free air compressor rational in infrastructure.

Compressor pump of the present utility model constitutes pump housing pedestal by the two shaft steel plate motors of two supports and capacitor operating type and four rubber foots.Support is that rotor is done the bearing chamber support, also is the pedestal of cylinder and air flue simultaneously, the indoor arrangement bearing of support middle (center) bearing, and support can be made of aluminum alloy.Two eccentric wheels are 180 ° of bilateral symmetry and position mutual deviations, and connecting rod connects with eccentric wheel by bearing.The cylinder of seat on support, pressing plate, leather cup, cylinder block constitutes air chamber, and tracheae connects the both sides air chamber.

As shown in Figure 1, during compressor pump work, left side connecting rod is at the highest notch, and left side cylinder gas enters left air chamber by compression, and this moment, right side connecting rod was a minimum point, and then right side cylinder is a suction condition.Motor Rotate 180 °, right side cylinder enters compressive state by suction condition, and pressurized gas is pressed into right cylinder, and then left side cylinder transfers suction condition to from compressive state, so moves in circles.If the electric machine main shaft rotating speed is 1400r.p.m, standard exhaust pressure 0.4MPa, the highest exhaust pressure is 0.7MPa, maximum air displacement 100L/min.

The crank of the utility model crank-connecting rod is an eccentric wheel, cooperates by bearing between eccentric wheel and the connecting rod.The piston of piston-cylinder is a leather cup, and leather cup is synthetic special materials such as the empty teflon carbon fiber of practising ring-type, glass fibre in the middle of being, its heatproof, wear-resisting, ageing-resistant and deformation coefficient is good especially.

Heat dissipation air hood of the present utility model extends to the cylinder limit, and the fan blade of use is the fan type fan blade, and such structure increases air quantity.Through stator, rotor, part makes progress away the wind part that the fan blade rotation produces, and flows through cylinder body, can cool off the cylinder body that produces heat because of gas compression in the time of cooling motor from substantially horizontal.

The bent axle that has equilibrium block is under motor driving, and drivening rod moves reciprocatingly, and makes with the leather cup of connecting rod one and do air-breathing, exhaust reciprocating action in cylinder, reaches the purpose of pressurized gas.Bearing outer wall of the present utility model is embedded with bearing housing, can reduce noise, improves working life, sleeve wall thickness 1.5-4.5mm, and material is more suitable with middle-carbon steel.

Cylinder of the present utility model selects for use seamless steel pipe to form through special surface heat treatment, and heat treatment high temperature can reach 900 ℃, and various trace elements such as infiltration nickel chromium triangle form alloy-layer in steel tube surface, have improved surface hardness greatly, make its ellipse propertyization, non-corrosive.

Motor of the present utility model is the two shaft steel plate motors of capacitor operating type, makes more conveniently, and assembling is simple, and the dynamic balance performance that helps motor is checked.

The critical piece of compressor pump all is die castingss, and economical with materials has also been improved pump housing shape, and it is reasonable to make it more to become.

The utility model is the kind symmetrical balance type oil-free air compressor pump that declines, its stent support the rotor and the stator of motor, parts such as cylinder can be installed on the support, cancelled the conductance plate of material but also unfavorable diffusing gesture that not only taken of the prior art, simplified pump body structure greatly, alleviate the weight of pump, reduce noise, and do not influence pump housing bulk strength.Fan blade, the fan housing radiating effect of the utility model design are good, and not only cooling motor can also cool off cylinder, makes compressor pump save the cooling of extraneous blower fan.The utility model is simple in structure, and technical parameter is stable, the discharge capacity high conformity, because other parts are metal crimp foundry goods, product design is scientific and reasonable, can be widely used in medical apparatus, rigorous analysis instrument, light industry, industries such as environmental protection.

Fig. 1-Fig. 8 is a diagram of the present utility model, and 1 is rubber foot among the figure, the 2nd, and fan housing, the 3rd, fan blade, the 4th, eccentric wheel, the 5th, bearing, the 6th, connecting rod, the 7th, support, the 8th, cylinder, the 9th, leather cup, the 10th, pressing plate, the 11st, cylinder block, the 12nd, sealed picture, the 13rd, cylinder head, the 14th, tracheae, the 15th, motor, the 16th, bearing housing.

Fig. 1 is the utility model front cut-open view of final assembly, 2,3 parts are formed the cooling duct wind regime among the figure, 4,5,6 parts and motor are formed kinematic configuration and motive force, make interlock be able to do straight line motion in part 9, parts such as 10,11,12,13,14 are formed air chamber to be compressed gas and exports.

Fig. 2 is the utility model support front view, this support both had been motor shaft place, and the spring bearing location makes the compresser cylinder seat again thereon, and the processing Geometrical Tolerance Principle of this support is higher, thereby guarantees the usage requirement of compressor by high-precision processing and assembling.

Fig. 3 is the bracket side view.

Fig. 4 is the utility model fan blade figure, and this fan blade part is changed the staight shank fan blade custom of capacitor operating and capacitor start motor in the past, makes the fan-shaped fan blade into, and is aided with Fig. 5 fan housing, makes air quantity big, has promptly cooled off motor and has cooled off cylinder again.

Fig. 7 is the utility model leather cup figure.

Fig. 8 is the utility model axle sleeve figure.

Embodiment: get one in 370W motor, fastening with 4 large size rubber foots with M6 * 15 4 screw.18107 bearings are pressed in the eccentric wheel of throw of eccentric 6.5.With external diameter is that pressing plate, leather cup, the centre distance of  61.1 is that 93 connecting rod is solid with the sunk screw connection of 2 M5 * 12, and the upper component capacity eccentric bearing parts of packing into are formed new parts.New parts are pushed the motor spindle (too tightly can cut with scissors eccentric pivot hole with  17 reamers earlier herein if note) that is of a size of  17, are that the cylinder of  63 is put into the support step then with internal diameter size, are sure not leather cup edge cut wound when noting cylinder is installed.Pin cylinder, rotate eccentric wheel, make between offset connecting rod and the cylinder to be in symmetrical clearance, tighten up 2 M5 * 6 fastening screw trip bolts on eccentric wheel and the connecting rod.Then  68 * 2.5 silicone rubber O-rings, cylinder head, cylinder block, valve block are tightened up with 8 M4 * 44 socket head screws, on fan blade, mounting spring press from both sides, push motor spindle, fan housing is installed, tighten up and get final product with 8 M5 * 8 half knob screws.

Claims (6)

1. miniature oil-free air compressor pump, form by motor, connecting rod, piston-cylinder mechanism, support, it is characterized in that two supports (7) go out shaft motor (15) and rubber foot (1) constitutes pump housing pedestal with two, two eccentric wheels (4) are 180 ° of bi-side symmetry and position mutual deviations, connecting rod (6) cooperates connection by bearing (5) with eccentric wheel (4), cylinder (8) seat is on support (7), constitute air chamber with pressing plate (10), leather cup (9), cylinder block (11), the both sides air chamber is connected by tracheae (14).

2. miniature oil-free air compressor pump according to claim 1, the crank that it is characterized in that connecting rod is an eccentric wheel, between eccentric wheel and the connecting rod is that bearing cooperates, and the piston of piston-cylinder mechanism is a leather cup, and leather cup is the fine glass leather cup of the ring-type polytetrafluoroethyl-ne olefinic carbon of intermediate hollow.

3. miniature oil-free air compressor pump according to claim 1 is characterized in that fan housing (2) extends to the cylinder limit, and fan blade is fan type fan blade (3).

4. miniature oil-free air compressor pump according to claim 1 is characterized in that the pump bearing outer wall is embedded with bearing housing, sleeve wall thickness 1.5-4.5mm.

5. miniature oil-free air compressor pump according to claim 1 is characterized in that two to go out shaft motor be the steel plate motor.

6. miniature no axle air pressure pump according to claim 1 is characterized in that the parts in addition of pump all are die castingss.

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