CN111379688A

CN111379688A - Spiral chip removal occlusion piston and oil-free piston compressor

Info

Publication number: CN111379688A
Application number: CN202010284851.9A
Authority: CN
Inventors: 梁国亮; 王友顺
Original assignee: Shenyuan Electromechanical Co ltd
Current assignee: Shenyuan Electromechanical Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-07-07

Abstract

The invention provides a spiral chip removal occlusion piston and an oil-free piston compressor, and belongs to the technical field of gas compression equipment. The piston assembly solves the problems that the existing piston assembly is complex in process and high in cost, abrasion powder is easy to accumulate to influence the sealing performance of a contact surface and accelerate the abrasion speed of the contact surface. This spiral chip removal interlock piston, including the fashioned connecting rod of mutually supporting and piston assembly, piston assembly includes piston body and uide bushing, offered the heliciform recess on the outer face of cylinder of piston body, the inner cylinder face of uide bushing have with heliciform groove structure position matched with heliciform protruding muscle, and make through hot briquetting and form the mutual interlock fastening between piston body and the uide bushing, offered piston ring groove on the piston body and installed the piston ring, offer the heliciform slot that is used for the chip removal on the outer face of uide bushing, an oil-free piston compressor, include foretell spiral chip removal interlock piston. The invention has the advantages of high bonding strength of the piston assembly and long service life.

Description

Spiral chip removal occlusion piston and oil-free piston compressor

Technical Field

The invention belongs to the technical field of gas compression equipment, relates to a piston and a compressor, and particularly relates to a spiral chip removal occlusion piston and an oil-free piston compressor.

Background

The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, is also called as an air compressor, is mainly applied to industrial gas source equipment, new energy passenger cars, trucks and the like, and provides clean and oil-free compressed air for the industrial gas source equipment, the new energy passenger cars, the trucks and the like. In the medium-high pressure air compressor, the structure types mainly include screw type, piston type and vortex type, and the oil-free machine mainly comprises the piston type and the vortex type. Piston uide bushing among the piston structure compressor mainly has bonding formula and movable contact with the combination mode of piston, and in prior art, the piston uide bushing uses the viscose mode to combine integratively with the piston body, and the technology is complicated with high costs, involves chemical glue and does not protect the environment again, and the thickness processing of movable contact uide bushing requires highly, has the defect that the noise is big to the motion each other between piston and the cylinder can produce the wearing and tearing powder, and piling up of powder can influence the leakproofness of contact surface and accelerate its wearing and tearing speed.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a piston which adopts a thermoforming and die pressing integrated forming technology, discharges abraded powder through spiral guide and has a spiral meshing structure, and is applied to an oil-free compressor.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a spiral chip removal interlock piston, includes the fashioned connecting rod of mutually supporting and piston assembly, a serial communication port, piston assembly includes piston body and uide bushing, the heliciform recess has been seted up on the outer face of cylinder of piston body, the inner cylinder face of uide bushing have with heliciform groove structure position matched with heliciform protruding muscle to form the interlock fastening each other through hot briquetting messenger between piston body and the uide bushing, the piston body on seted up the piston ring groove and installed the piston ring, offer the heliciform slot that is used for the chip removal on the outer face of cylinder of uide bushing.

In the spiral chip removal occlusion piston, the top of the piston body is provided with an air inlet valve through a screw.

In the above spiral chip removal snap piston, the piston ring groove is located above the spiral groove.

In the spiral chip removal occlusion piston, the connecting rod is connected with the piston assembly through the needle bearing and the piston pin.

The utility model provides an oil-free piston compressor, its characterized in that includes foretell spiral chip removal interlock piston, piston assembly locate on the crank through the connecting rod cover, the crank pass through the crankcase and install on the motor, piston assembly cooperate in the cylinder, the top of cylinder is provided with and has seted up the gas vent on cylinder cap and the cylinder cap, cylinder and cylinder cap between be provided with exhaust valve plate, exhaust valve plate on seted up the air vent valve.

In the oil-free piston compressor, the number of the crank cases is two and the crank cases are respectively installed at two ends of the motor.

In the oil-free piston compressor, the motor is mounted on the base, and the fans are arranged below the two crank cases on the base.

In the oil-free piston compressor, a spring shock pad is arranged on the bottom surface of the base.

Compared with the prior art, the spiral chip removal occlusion piston and the oil-free piston compressor have the following advantages:

1. the piston body and the guide sleeve are combined in a thermal forming and die pressing integrated forming technology, and are matched and fixed through the spiral grooves and the spiral convex ribs to replace the traditional gluing process, so that the pollution of chemical glue to the environment is reduced, the bonding strength of the piston guide sleeve and the piston body is increased, and the risk of falling off of the guide sleeve due to infirm gluing is avoided;

2. the spiral groove on the guide sleeve does not influence the guide precision, and can reduce the friction area, thereby reducing the heating, the spiral groove also can collect the abrasion powder, and the powder can be discharged out of the guide sleeve along the spiral groove under the action of extrusion force, thereby reducing the friction abrasion between the guide sleeve and the cylinder, and effectively prolonging the service life of the whole body;

3. set up two air compressor unit on the motor and cooperate the fan heat dissipation respectively on the bottom plate, can export simultaneously, improve work efficiency, the rational utilization space radiating effect is better, and the spring shock pad on the seat can effectively slow down the compressor vibration that comes at the during operation to protect whole equipment, make its life-span extension.

Drawings

Fig. 1 is a schematic view of the present piston rod.

Figure 2 is a cross-sectional view of the present piston rod a-a.

Fig. 3 is an enlarged view of the structure at I in fig. 2.

Fig. 4 is an exploded view of the present careless compressor.

In the figure, 1, connecting rod; 2. a piston assembly; 2a, a piston body; 2a-1, a helical groove; 2a-2, a piston ring groove; 2b, a guide sleeve; 2b-1 spiral convex ribs; 2b-2 helical grooves; 3. an intake valve; 4. a needle bearing; 5. a piston pin; 6. a crank; 7. a crankcase; 8. a motor; 9. a cylinder; 10. a cylinder cover; 10a, an exhaust port; 11. an exhaust valve plate; 11a, an exhaust valve; 12. a base; 13. a fan; 14. a spring shock pad.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the spiral chip removal occlusion piston comprises a connecting rod 1 and a piston assembly 2 which are formed by being matched with each other, wherein the piston assembly 2 comprises a piston body 2a and a guide sleeve 2b, a spiral groove 2a-1 is formed in the outer cylindrical surface of the piston body 2a, a spiral convex rib 2b-1 matched with the spiral groove 2a-1 in structural position is arranged on the inner cylindrical surface of the guide sleeve 2b, mutual occlusion fastening is formed between the piston body 2a and the guide sleeve 2b through hot press forming, a piston ring groove 2a-2 and a piston ring are arranged on the piston body 2a, and a spiral groove 2b-2 used for chip removal is formed in the outer cylindrical surface of the guide sleeve 2 b.

An air inlet valve 3 is arranged at the top of the piston body 2a through a screw, a piston ring groove 2a-2 is positioned above a spiral groove 2b-2, and the connecting rod 1 is connected with the piston assembly 2 through a needle bearing 4 and a piston pin 5.

As shown in fig. 4, the oil-free piston compressor includes a spiral chip removal occluded piston, a piston assembly 2 is sleeved on a crank 6 through a connecting rod 1, the crank 6 is installed on a motor 8 through a crank case 7, the piston assembly 2 is fitted in a cylinder 9, the top of the cylinder 9 is provided with a cylinder cover 10, an exhaust port 10a is formed in the cylinder cover 10, an exhaust valve plate 11 is arranged between the cylinder 9 and the cylinder cover 10, and an exhaust valve 11a is formed in the exhaust valve plate 11.

The quantity of crankcase 7 is two and installs respectively in the both ends of motor 8, and motor 8 installs on base 12, and the below that lies in two crankcases 7 on base 12 all is provided with fan 13, among the oil free piston compressor, the bottom surface of base 12 is provided with spring shock pad 14.

The motor 8 drives the crank 6 to do rotary motion, the crank 6 drives the connecting rod 1 and the piston assembly 2 to do reciprocating linear motion along the cylinder 9, the connecting rod 1 and the piston assembly 2 are connected through a needle bearing 4 and a piston pin 5, air enters through the crank box 7 and enters the cylinder 9 through an air inlet valve 3 on the piston body 2a, is compressed and then discharged to a cylinder 9 cover from an exhaust valve 11a on an exhaust valve plate 11, and is discharged to a pipeline air storage tank system through an exhaust port 10a on the cylinder 9 cover.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although a plurality of terms is 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 as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A spiral chip removal occlusion piston comprises a connecting rod (1) and a piston component (2) which are mutually matched and formed, characterized in that the piston assembly (2) comprises a piston body (2 a) and a guide sleeve (2 b), a spiral groove (2 a-1) is arranged on the outer cylindrical surface of the piston body (2 a), the inner cylindrical surface of the guide sleeve (2 b) is provided with a spiral convex rib (2 b-1) matched with the structure position of the spiral groove (2 a-1), and the piston body (2 a) and the guide sleeve (2 b) are mutually meshed and fastened through hot-press molding, the piston body (2 a) is provided with a piston ring groove (2 a-2) and is provided with a piston ring, and a spiral groove (2 b-2) for chip removal is formed in the outer cylindrical surface of the guide sleeve (2 b).

2. A screw chip ejection snap piston according to claim 1, characterised in that the top of the piston body (2 a) is provided with an inlet valve (3) by means of screws.

3. A helical chip ejection snap piston according to claim 1, wherein the piston ring groove (2 a-2) is located above the helical groove (2 b-2).

4. A screw chip ejection snap piston according to claim 1, characterized in that the connecting rod (1) is connected to the piston assembly (2) via a needle bearing (4) and a wrist pin (5).

5. An oil-free piston compressor, characterized by that, contain the spiral chip removal interlock piston of any claim 1 to 4, piston assembly (2) locate on crank (6) through connecting rod (1) cover, crank (6) install on motor (8) through crankcase (7), piston assembly (2) cooperate in cylinder (9), the top of cylinder (9) is provided with cylinder cap (10) and has seted up gas vent (10 a) on cylinder cap (10), cylinder (9) and cylinder cap (10) between be provided with exhaust valve board (11), exhaust valve board (11) on seted up gas vent (11 a).

6. An oil-free piston compressor as claimed in claim 5, wherein the number of the crank cases (7) is two and the crank cases are respectively mounted at both ends of the motor (8).

7. An oil-free piston compressor as claimed in claim 5, wherein the motor (8) is mounted on a base (12), and a fan (13) is disposed on the base (12) below the two crankcases (7).

8. An oil-free piston compressor as claimed in claim 7, wherein the bottom surface of the base (12) is provided with a spring damper pad (14).