CN214741902U

CN214741902U - Stable oil-free double-cylinder piston air compressor

Info

Publication number: CN214741902U
Application number: CN202120667961.3U
Authority: CN
Inventors: 叶晨江
Original assignee: Taizhou Owen Electro Machinery Co ltd
Current assignee: Taizhou Owen Electro Machinery Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-16
Anticipated expiration: 2031-04-01

Abstract

The utility model provides a stable form does not have oily double-cylinder piston air compressor machine belongs to air compressor machine technical field. The connecting rod solves the problems that the stability of the existing connecting rod is poor in the operation process, and the service life of the piston is easily shortened due to external abrasion. This stable form does not have oily double-cylinder piston air compressor machine, include the motor and set up in the pump head of motor both sides, the pump head upwards extends and forms the cylinder, be provided with the connecting rod in the cylinder, the eccentric crank that is provided with on the transmission shaft, the connecting rod cover is located on the crank, the articulate outside has rather than formula as an organic whole's balancing piece, radially set up fixed screw on the balance and wear to establish screw and epaxial keyway cooperation of transmission in fixed screw and make the crank be fixed in on the transmission shaft, be provided with first bearing between crank and the connecting rod, be provided with the bearing frame that is the integral type structure rather than the pump case in the pump head, be provided with the second bearing that supports the transmission shaft in the bearing frame. The utility model discloses the junction structure to connecting rod and motor shaft in the pump head improves and makes it have the advantage that the operation is more stable.

Description

Stable oil-free double-cylinder piston air compressor

Technical Field

The utility model belongs to the technical field of the air compressor machine, a do not have oil air compressor machine, in particular to no oily double-cylinder piston air compressor machine of stable form.

Background

The piston air compressor is an air compressor which changes the internal volume by a cylinder and a piston reciprocating in the cylinder, a crankshaft is driven to rotate after a motor is started, the working volume of the piston reciprocating is changed periodically through the transmission of a connecting rod, the crankshaft rotates for a circle, the piston reciprocates once, the processes of air inlet, compression and exhaust are successively realized in the cylinder, namely, one working cycle is completed, the cylinder is a cylindrical metal part which guides the piston to do linear reciprocating motion in the cylinder, and the gas is compressed by the piston in the air compressor cylinder to improve the pressure.

Because all be in its pump head of traditional air compressor machine that filling machine oil realizes lubricated consequently compressed gas is easily contaminated, the cleanliness is relatively poor, present piston air compressor machine most adopts the oilless formula, realize oilless reciprocating motion through set up leather cup or coating at the piston contact surface, therefore the stability of connecting rod operation is the important factor that influences piston life, among the prior art, the connecting rod link to each other with the motor shaft through the bent axle, the connecting rod is relatively poor at operation in-process stability, cause piston external wear life to reduce easily.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide one kind and improved the more stable oil-free double-cylinder piston air compressor machine of messenger's operation to the junction structure of connecting rod and motor shaft in the pump head.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a stable form does not have oily double-cylinder piston air compressor machine, includes the motor and sets up in the pump head of motor both sides, the transmission shaft both ends of motor stretch into its operation of drive in the both sides pump head respectively, its characterized in that, the top of pump head upwards extends and forms the cylinder, the cylinder in be provided with the connecting rod, the transmission shaft on the eccentric crank that is provided with, the connecting rod cover locate on the crank, the articulate outside have rather than formula as an organic whole's balancing piece, the balance on radially seted up fixed screw and wear to establish screw and epaxial keyway cooperation of transmission in fixed screw and make the crank be fixed in the transmission shaft, crank and connecting rod between be provided with first bearing, the pump head in be provided with the bearing frame that is the integral type structure rather than the pump case, the bearing frame in be provided with the second bearing that supports the transmission shaft.

In this piston air compressor, its structure is single motor drive two pump head synchronous operation, for making the operation of transmission shaft and connecting rod more steady, be used for installing the second bearing in the inside bearing frame that sets up of pump head, the bearing frame designs as an organic whole with the pump head, further, for the articulate parallel key fixed knot of tradition constructs, the utility model discloses increase the balancing piece on the crank, the balancing piece is discoid and the transmission shaft passes the balancing piece simultaneously, for making the connection structure of crank and balancing piece more firm, radially wear to establish the screw on the balancing piece, the tip of screw supports mutually with the epaxial keyway of transmission and supports, design crank through this structure is difficult not hard up fastening nature in service better, sets up first bearing again between crank and the connecting rod, makes the rotation of connecting rod more smooth-going and the difficult wearing and tearing of contact surface.

In foretell stable form does not have oily double-cylinder piston air compressor machine, the leather cup has been linked firmly on the terminal surface of connecting rod, the leather cup pass through connecting rod terminal surface top screw fastening clamp plate with it fixed, the lateral wall and the sealed setting of cylinder inner wall cooperation contact of leather cup.

In the above-mentioned stable form does not have oily double-cylinder piston air compressor machine, the lower terminal surface of clamp plate has the annular protrusion of round.

In foretell stable form does not have oily double-cylinder piston air compressor machine, the top of cylinder compresses tightly through the cylinder cap and is fixed with the valve plate.

In foretell stable form does not have oily double-cylinder piston air compressor machine, valve plate up end center fixed with the stopper, the stopper be the straight strip form its middle part and leave the clearance between the fixed both sides of valve plate and the valve plate, the valve block of valve plate is opened the below that the end is located the stopper both sides.

In foretell stable form does not have oily double-cylinder piston air compressor machine, the cylinder cap between be provided with the connecting pipe that makes inside intercommunication.

In foretell stable form does not have oily double-cylinder piston air compressor machine, motor and pump head between wear to establish a plurality of bolt fastening shaping through two pump head outer lane circumference.

In foretell stable form does not have oily double-cylinder piston air compressor machine, the tip of transmission shaft is provided with radiator fan, the both ends face of pump head be with the cavity type structure of inside intercommunication and be fixed with the protection casing on the terminal surface.

Compared with the prior art, this stable form does not have oily double-cylinder piston air compressor machine has following advantage:

1. the balance block is added on the crank, and the screw is radially arranged in the balance block in a penetrating way to fix the crank and the motor transmission shaft, so that the connecting structure is not easy to loosen, and the running stability of the connecting rod is better;

2. set up the packing leather cup at the connecting rod tip and realize the piston effect, make this air compressor machine carry out oil-free operation, the structure is simpler, and the compressed air cleanliness is higher, and the packing leather cup passes through the annular protruding of clamp plate cooperation and is fixed difficult for droing with the connecting rod, and the later stage packing leather cup of also being convenient for simultaneously changes after wearing and tearing, and it is more convenient to overhaul.

Drawings

Fig. 1 is a partial sectional view of the air compressor;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic structural view of the crank;

fig. 4 is a schematic view of the overall structure of the air compressor;

in the figure, 1, a motor; 2. a pump head; 3. a drive shaft; 4. a cylinder; 5. a connecting rod; 6. a crank; 6a, a balance block; 6b, fixing screw holes; 7. a first bearing; 8. a bearing seat; 9. a second bearing; 10. a leather cup; 11. pressing a plate; 11a, an annular protrusion; 12. a cylinder cover; 13. a valve plate; 14. a limiting block; 15. a connecting pipe; 16. a bolt; 17. a heat radiation fan; 18. a shield.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, this stable form does not have oily double-cylinder piston air compressor machine, including motor 1 with set up in pump head 2 of motor 1 both sides, 3 both ends of transmission shaft of motor 1 stretch into respectively and drive its operation in the pump head 2 of both sides, the cylinder 4 of pump head 2 top can be for forming with 2 integral types of pump head, also can be through the shaping of the fixed cylinder liner at pump head 2.

A connecting rod 5 is arranged in the cylinder 4, a crank 6 is eccentrically arranged on the transmission shaft 3, the connecting rod 5 is sleeved on the crank 6, the bottom of the connecting rod 5 is open, and the connecting rod 5 and the crank 6 are fixed through screw fastening.

The outside of crank 6 has rather than balancing piece 6a of formula as an organic whole, balancing piece 6a is discoid, radially seted up fixed screw 6b in the balance and wear to establish screw and the epaxial keyway cooperation of transmission shaft 3 in fixed screw 6b and make crank 6 be fixed in transmission shaft 3 on, be provided with primary shaft 7 between crank 6 and the connecting rod 5, be provided with in the pump head 2 and be the bearing frame 8 of integral type structure rather than the pump case, be provided with the second bearing 9 that supports transmission shaft 3 in the bearing frame 8, above-mentioned bearing is deep groove ball bearing.

Further, a leather cup 10 is fixedly connected to the end face of the connecting rod 5, the leather cup 10 is fixed through a pressing plate 11 fastened by screws above the end face of the connecting rod 5, the side wall of the leather cup 10 is in matched contact and sealing arrangement with the inner wall of the air cylinder 4, a circle of annular protrusion 11a is arranged on the lower end face of the pressing plate 11, and the leather cup 10 is annular and can be better fastened through being in contact with the annular protrusion 11 a.

A valve plate 13 is tightly pressed and fixed above the cylinder 4 through a cylinder cover 12, an air inlet valve plate and an air outlet valve plate are respectively arranged on two end faces of the valve plate 13 and are matched with the connecting rod 5 to realize air compression of the air compressor, a limiting block 14 is fixed at the center of the upper end face of the valve plate 13, a gap is reserved between the middle of the limiting block 14 in a straight strip shape and two fixed sides of the valve plate 13 and the valve plate 13, the valve plate opening end of the valve plate 13 is located below two sides of the limiting block 14, and the limiting block 14 is arranged to limit the opening range of the valve plate and prevent the valve plate from being deformed due to overlarge opening range.

A connecting pipe 15 for communicating the inside is provided between the cylinder heads 12 for balancing the air pressure in the two cylinder heads 12.

The motor 1 and the pump head 2 are fastened and formed by penetrating a plurality of bolts 16 in the circumferential direction of the outer rings of the two pump heads 2, and the connection structure can enable the connection between the motor 1 and the pump head 2 to be more convenient and faster.

The tip of transmission shaft 3 is provided with radiator fan 17, and the both ends face of pump head 2 is fixed with protection casing 18 for the cavity type structure with inside intercommunication and on the terminal surface, and pump head 2 is inside to be connected with motor 1 for run-through formula one end, and the other end passes through protection casing 18 to be connected, and cooperation radiator fan 17 can make the radiating effect of pump head 2 better simultaneously.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although various terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a stable form does not have oily double-cylinder piston air compressor machine, includes motor (1) and sets up in pump head (2) of motor (1) both sides, drive its operation in drive pump head (2) of both sides is stretched into respectively at the transmission shaft (3) both ends of motor (1), its characterized in that, the top of pump head (2) upwards extends and forms cylinder (4), cylinder (4) in be provided with connecting rod (5), transmission shaft (3) on the eccentric crank (6) that is provided with, connecting rod (5) cover locate on crank (6), the outside of crank (6) has balancing piece (6 a) rather than formula as an organic whole, the balance on radially seted up fixed screw (6 b) and wear to establish screw and the keyway cooperation on transmission shaft (3) in fixed screw (6 b) and make crank (6) be fixed in transmission shaft (3), crank (6) and connecting rod (5) between be provided with first bearing (7), the pump head (2) in be provided with bearing frame (8) rather than the pump case and be integral type structure, bearing frame (8) in be provided with second bearing (9) that support transmission shaft (3).

2. The stable oil-free double-cylinder piston air compressor as claimed in claim 1, wherein a leather cup (10) is fixedly connected to an end face of the connecting rod (5), the leather cup (10) is fixed by a screw fastening pressing plate (11) above the end face of the connecting rod (5), and a side wall of the leather cup (10) is in contact and sealing arrangement with an inner wall of the cylinder (4).

3. A stable type oil-free double cylinder piston air compressor as claimed in claim 2, wherein the lower end surface of the pressure plate (11) has a ring-shaped protrusion (11 a).

4. A stable oil-free double-cylinder piston air compressor as claimed in claim 1, wherein a valve plate (13) is fixed above the cylinder (4) by compressing through a cylinder cover (12).

5. The stable oil-free double-cylinder piston air compressor as claimed in claim 4, wherein a limiting block (14) is fixed to the center of the upper end surface of the valve plate (13), the limiting block (14) is in the shape of a straight strip, a gap is left between the middle of the limiting block (14) and the two sides of the valve plate (13) which are fixed to the valve plate (13), and the opening end of the valve plate (13) is located below the two sides of the limiting block (14).

6. A stable oil-free double-cylinder piston air compressor as claimed in claim 4, wherein a connecting pipe (15) for communicating the inside is provided between said cylinder heads (12).

7. The stable oil-free double-cylinder piston air compressor as claimed in claim 1, wherein the motor (1) and the pump heads (2) are fastened and formed by a plurality of bolts (16) passing through the outer rings of the two pump heads (2) in the circumferential direction.

8. A stable oil-free double-cylinder piston air compressor as claimed in claim 1, wherein the end of the driving shaft (3) is provided with a heat dissipating fan (17), and the two end faces of the pump head (2) are cavity type structures communicated with the inside and are fixed with protective covers (18).