CN215830667U - Reciprocating double-acting air compressor - Google Patents

Abstract

The utility model discloses a reciprocating double-acting air compressor, which comprises a double-acting plunger, a cylinder body, a valve plate, an exhaust valve plate and a cylinder cover, wherein the valve plate is arranged on the cylinder body and is connected with the cylinder body through an inner ventilating bolt; a crankshaft directly connected with a motor spindle is installed in the cylinder body, and cooling fans are installed on two sides of the motor; the double-acting plunger is coaxial with the cylinder body and is arranged on the outer side of the inner rotor through a first bearing, the whole double-acting plunger is arranged on a crank shaft through a second bearing, and an air inlet valve plate is arranged at the top of the double-acting plunger. The utility model adopts an inner rotor reciprocating plunger compression structure, solves the problem that the traditional piston type structure adopts a connecting rod piston pin needle bearing structure which is easy to lose efficacy, adopts a two-stage eccentric transmission structure, and has more compact structure, less transmission bearings and reliable performance.

Description

Reciprocating double-acting air compressor

Technical Field

The utility model belongs to the field of air compression equipment, and particularly relates to a reciprocating positive displacement double-acting air compressor for a vehicle.

Background

The automobile air compressor is mainly used for providing necessary air sources for an automobile braking technology, a suspension system, a door opening and closing device and an auxiliary pneumatic device. Currently, the commonly used vehicle-mounted air compressors mainly comprise sliding vane type, vortex type and piston type air compressors.

The reciprocating positive displacement air compression mainly is a reciprocating piston type compressor in the current market, the reciprocating piston type compressor realizes the reciprocating motion of a piston by adopting a crank connecting rod mechanism, the mechanism has a complex structure, is large in size and poor in reliability, and particularly in the field of oil-free piston type compressors, because no lubricating oil participates in the interior of the compressor, the crank connecting rod transmission mechanism can only adopt a maintenance-free lubricating bearing with sealing grease to bear the bearing, particularly in the position of a small-end bearing of a connecting rod, because the bearing is positioned in the piston, the temperature is very high, and various adverse environments such as impact vibration, poor lubrication, air dust and the like easily accelerate piston pins and the abrasion failure of needle bearings, so that the vibration and the noise of the whole machine are increased, and finally the failure of the air compressor is caused.

The reciprocating piston type air compressor enables the volume of a cylinder body to be changed periodically through the reciprocating motion of a piston in a cylinder, and realizes the pressurization and the conveying of gas. The piston type air compressor commonly used in the market only completes one-time compression of air in the reciprocating motion process, and has single action and low efficiency; meanwhile, the operation vibration is large, and along with the increase of the exhaust pressure, the compression force of the piston is increased, the stress is more unbalanced, and the operation vibration is further intensified.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a reciprocating positive displacement type double-acting air compressor which is efficient, energy-saving, high in reliability, compact in structure, small in size and convenient to install and arrange, aiming at the defects of the prior art.

The purpose of the utility model is realized by the following technical scheme: a reciprocating double-acting air compressor comprises a double-acting plunger, a cylinder body, a valve plate, an exhaust valve plate and a cylinder cover, wherein the valve plate is arranged on the cylinder body and connected through an inner vent bolt; a crankshaft directly connected with a motor spindle is installed in the cylinder body, and cooling fans are installed on two sides of the motor; the double-acting plunger is coaxial with the cylinder body and is arranged on the outer side of the inner rotor through a first bearing, the whole double-acting plunger is arranged on a crank shaft through a second bearing, and an air inlet valve plate is arranged at the top of the double-acting plunger.

Furthermore, sealing rings and guide rings are installed on two sides of the double-acting plunger.

Further, a mounting bracket and a shock pad are arranged below the cylinder body and the motor.

Further, have exhaust joint and discharge valve limit structure on the cylinder cap, install the reed valve on the discharge valve piece, the remaining surface coating of discharge valve piece has the rubber layer simultaneously, and the discharge valve piece both plays sealed effect, combines the cylinder cap to realize discharge valve's function simultaneously.

The utility model has the beneficial effects that:

1. adopt the reciprocal plunger compression structure of inner rotor: the problem that a connecting rod piston pin needle bearing structure adopted by a traditional piston is prone to failure is solved, a two-stage eccentric transmission structure is adopted, and the one-side reciprocating rotary motion of a crank connecting rod structure is converted into the two-side coaxial reciprocating linear motion; the crankshaft rotates for a circle, the double-acting plunger reciprocates once, and the gas compression twice is completed, so that the structure is more compact, the number of transmission bearings is small, and the performance is reliable. And two-stage compression is adopted to greatly improve exhaust pressure and reduce gas acting force.

2. The strength of the transmission structure is ensured by adopting a front-back double-support design, and the aims of compact structure, small volume and stable operation are fulfilled. Meanwhile, the structure effectively solves the problems that the shape and position errors of the crank are large due to large processing and assembling errors of the transmission component, so that the air compressor runs and vibrates greatly and has short service life.

Drawings

FIG. 1 is a top sectional view of the structural principle of a reciprocating double-acting air compressor;

FIG. 2 is a view of the overall structure of the reciprocating double-acting air compressor;

FIG. 3 is a gas flow path view of a reciprocating double acting air compressor;

FIG. 4 is a schematic view of a reciprocating double-acting air compressor cylinder head;

figure 5 is a schematic view of an integrated valve plate type cylinder gasket of a reciprocating double-acting air compressor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from a single embodiment of the utility model without inventive step, are within the scope of the utility model.

As shown in fig. 1-3, the reciprocating horizontal opposed double-acting compressor provided by the utility model comprises a cylinder block 2, a valve plate 12, a discharge valve plate 11 and a cylinder cover 10, wherein the valve plate 12, the discharge valve plate 11 and the cylinder cover 10 are arranged on the cylinder block 2 and are connected through an inner ventilating bolt 18; the crankshaft 1 is arranged on the cylinder body 2 and is directly connected with a main shaft of a motor 14, and cooling fans 13 are arranged on two sides of the motor 14; the double-acting plunger 6 is coaxial with the cylinder body 2 and is arranged on the outer side of the inner rotor 3 through the first bearing 5, the whole double-acting plunger is arranged on a crank of the crankshaft 1 through the second bearing 4, the top of the double-acting plunger 6 is provided with an air inlet valve plate 9, and a sealing ring 8 and a guide ring 7 are respectively arranged on two sides of the double-acting plunger to play roles of sealing, lateral supporting and guiding; a mounting bracket 16 and a shock pad 17 are arranged below the cylinder block 2 and the motor 14.

The working principle is as follows:

as shown in fig. 1-3, a motor 14 provides power to drive a crankshaft to rotate, so that a double-acting plunger 6 reciprocates up and down in a cylinder body 2, an air inlet valve plate 9 is arranged on the double-acting plunger 6, when the plunger moves down from an upper dead point, the volume in the cylinder increases to generate negative pressure, outside air pushes the air inlet valve plate 9 from the lower part of the plunger along a first air path 19 to enter the cylinder body 2, when the plunger moves up from a lower dead point, the volume in the cylinder decreases, the air is extruded, and the air pressure rises until the air outlet valve plate 11 is pushed, then the air is discharged along a second air path 20 through an air outlet joint 15; at this point, one compression of the gas is completed. The above process is repeated along with the continuous work of the motor, the double-acting plunger 6 reciprocates once, the upper cylinder and the lower cylinder of the cylinder body are staggered to realize the processes of air inlet, compression and exhaust, and thus a working cycle is completed. The device has the advantages of high working efficiency, stable horizontal opposed operation, small vibration, compact structure and small volume.

Description of the components:

as shown in fig. 4-5, the exhaust structure is a seal-valve integrated structure, the exhaust valve structure disposed on the valve plate, which is commonly used, is eliminated, the exhaust valve limiting structure 21 is disposed on the cylinder cover 10, the reed valve 22 is integrally disposed on the exhaust valve plate 11, and the rubber layer 23 is coated on the remaining surface of the exhaust valve plate 11, so that the exhaust valve plate 11 plays a role of sealing, and the function of the exhaust valve is realized by combining the cylinder cover 10.

The above-described embodiments are intended to illustrate rather than to limit the utility model, and any modifications and variations of the present invention are within the spirit of the utility model and the scope of the appended claims.

Claims (4)

1. A reciprocating double-acting air compressor is characterized by comprising a double-acting plunger (6), a cylinder body (2), a valve plate (12) which is arranged on the cylinder body (2) and connected through an inner ventilating bolt (18), an exhaust valve plate (11) which is arranged on the valve plate (12) and a cylinder cover (10) which is arranged on the outer side of the valve plate (12); a crankshaft (1) which is directly connected with a main shaft of a motor (14) is arranged in the cylinder body (2), and cooling fans (13) are arranged on two sides of the motor (14); the double-acting plunger (6) is coaxial with the cylinder body (2) and is arranged on the outer side of the inner rotor (3) through a first bearing (5), the whole double-acting plunger is arranged on a crank of the crankshaft (1) through a second bearing (4), and an air inlet valve plate (9) is arranged at the top of the double-acting plunger (6).

2. A reciprocating double acting air compressor as claimed in claim 1, characterized in that said double acting plunger (6) is fitted with sealing rings (8) and guide rings (7) on both sides.

3. A reciprocating double acting air compressor as claimed in claim 1, characterized in that a mounting bracket (16) and a shock pad (17) are arranged below the cylinder block (2) and the electric motor (14).

4. A reciprocating double-acting air compressor according to claim 1, characterized in that the cylinder cover (10) is provided with a discharge joint (15) and a discharge valve limiting structure (21), the discharge valve plate (11) is provided with a reed valve (22), and the remaining surface of the discharge valve plate (11) is coated with a rubber layer (23), so that the discharge valve plate (11) has a sealing function and is combined with the cylinder cover (10) to realize the function of the discharge valve.

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