CN110863968A

CN110863968A - Double-pump-head air compressor

Info

Publication number: CN110863968A
Application number: CN201911273822.6A
Authority: CN
Inventors: 刘启亮; 王俊; 张莉
Original assignee: Zhejiang Luosen Compressor Co Ltd
Current assignee: Zhejiang Luosen Compressor Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-03-06
Anticipated expiration: 2039-12-12
Also published as: CN110863968B

Abstract

The invention provides a double-pump-head air compressor, and belongs to the technical field of air compressors. The problem that the flow of single output compressed gas of an existing air compressor is not high is solved. This double pump head air compressor machine, including a box, be equipped with the bent axle on the box, be connected with two piston compression device on the bent axle, every piston compression device includes a plurality of piston compression structure, every piston compression structure installs on above-mentioned box and includes the connecting rod, the connecting rod cup joints on above-mentioned bent axle. The double-pump-head air compressor has the advantages of capability of outputting double-flow compressed gas and good stability and no vibration.

Description

Double-pump-head air compressor

Technical Field

The invention belongs to the technical field of air compressors, and relates to a double-pump-head air compressor.

Background

An air compressor is a device for compressing gas. The air compressor is constructed similarly to a water pump. Most air compressors are reciprocating piston type, rotating vane or rotating screw.

The existing air compressor structure generally comprises a motor, a fan and a box body assembly, wherein the box body assembly comprises a box body, a crankshaft and a multi-stage compression structure connected to the crankshaft, and compressed air pressure is improved through the multi-stage compression structure. When a large flow of compressed gas is required, a plurality of air compressors are required to output the compressed gas at the same time, and the main problems are as follows: the air compressors are arranged, and the air compressors occupy large space and are high in cost.

Disclosure of Invention

The invention aims to solve the technical problems and provides a double-pump-head air compressor.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a double pump head air compressor machine, includes a box, be equipped with the bent axle on the box, its characterized in that: the crankshaft is connected with two piston compression devices, each piston compression device comprises a plurality of piston compression structures, each piston compression structure is installed on the box body and comprises a connecting rod, and the connecting rods are sleeved on the crankshaft.

In the above-mentioned double-pump-head air compressor, the crankshaft includes two first eccentric portions, two second eccentric portions and a main shaft, the two first eccentric portions and the two second eccentric portions separate the main shaft into three sections which are independent and separate from each other, a first eccentric shaft is fixedly installed between the two first eccentric portions, a second eccentric shaft is fixedly installed between the two second eccentric portions, and connecting rods in each piston compression structure of the two piston compression devices are respectively sleeved on the first eccentric shaft and the second eccentric shaft.

In the above-mentioned double-pump-head air compressor, the first eccentric shaft and the second eccentric shaft have the same structure, the first eccentric part and the second eccentric part have the same structure, the first eccentric shaft and the second eccentric shaft are respectively located at two sides of the main shaft, and the distance from the axis of the first eccentric shaft to the axis of the main shaft is equal to the distance from the axis of the second eccentric shaft to the axis of the main shaft.

In the above-mentioned double-pump-head air compressor, the piston compression device comprises five piston compression structures with the same structure, namely a first-stage compression structure with a first-stage cylinder, a second-stage compression structure with a second-stage cylinder, a third-stage compression structure with a third-stage cylinder, a fourth-stage compression structure with a fourth-stage cylinder and a fifth-stage compression structure with a fifth-stage cylinder, namely, two piston compression devices comprise two first-stage cylinders, two second-stage cylinders, two third-stage cylinders, two fourth-stage cylinders and two fifth-stage cylinders, wherein the respective air inlets of the two first-stage cylinders are converged and then communicated with the air inlet of the air compressor through a first-stage air inlet pipe, the respective air outlets of the two first-stage cylinders are converged and then communicated with the second-stage air inlet pipe through a first-stage air outlet pipe, the respective air outlets of the two second-stage cylinders are converged, the air inlet of each of the two three-stage cylinders is converged and then communicated with the three-stage air inlet pipe, the air outlet of each of the two three-stage cylinders is converged and then communicated with the four-stage air inlet pipe through a three-stage air outlet pipe, the air inlet of each of the two four-stage cylinders is converged and then communicated with the four-stage air inlet pipe, the air outlet of each of the two four-stage cylinders is converged and then communicated with the five-stage air inlet pipe through a four-stage air outlet pipe, the air inlet of each of the two five-stage cylinders is converged and then communicated with the five-stage.

In the above-mentioned double-pump-head air compressor, the first eccentric shaft is provided with five sleeving grooves.

Compared with the prior art, this double pump head air compressor machine has following several advantages:

1. the double-pump-head air compressor combines two air compressor structures to share one box structure, the two sets of piston compression devices are arranged in the same box structure, and then the two sets of piston compression devices are driven by sharing one crankshaft, so that the double-pump-head air compressor is more compact and simplified in structure and low in cost compared with the two independent air compressor structures in the prior art; moreover, the air inlet and outlet of the two first-stage cylinders, the two second-stage cylinders, the two third-stage cylinders, the two fourth-stage cylinders and the two fifth-stage cylinders are all combined together, so that high-pressure air with twice flow rate as that of a single-piston compression device can be finally output, and the air compression flow rate is improved;

2. the first eccentric shaft and the second eccentric shaft which are used for being connected with the connecting rod on the crankshaft are respectively located on two opposite sides of the main shaft and have the same structure, which is equivalent to a symmetrical design, so that the self-balance of relative stability can be realized without additionally adding a balancing weight, and the vibration force generated by the reciprocating pushing of the pistons in the two piston compression devices can be effectively counteracted with each other, so that the whole air compressor works stably without vibration.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is another schematic structural diagram of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a schematic structural view of a crankshaft.

In the figure, 1, a box body; 2. a crankshaft; 21. a first eccentric portion; 22. a first eccentric shaft; 23. a second eccentric portion; 24. a second eccentric shaft; 25. a main shaft; 3. a primary cylinder; 4. A first-stage air inlet pipe; 5. a primary air outlet pipe; 6. a secondary cylinder; 7. a secondary air inlet pipe; 8. a secondary air outlet pipe; 9. a third-stage cylinder; 10. a third-stage air inlet pipe; 11. a third-stage air outlet pipe; 12. a four-stage cylinder; 13. a four-stage air inlet pipe; 14. a fourth-stage air outlet pipe; 15. a five-stage cylinder; 16. a five-stage air inlet pipe; 17. a five-stage air outlet pipe.

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 and 2, the double-pump-head air compressor comprises a box body 1, a crankshaft 2 is arranged on the box body 1, two piston compression devices are connected to the crankshaft 2, and each piston compression device comprises five piston compression structures which are identical in structure and are arranged on the box body 1. Of course, this air compressor machine still includes structures such as motor, fan and air cleaner, because these structures and theory of operation are prior art, no longer repeated here. Five piston compression structures with the same structure are respectively a first-stage compression structure with a first-stage cylinder 3, a second-stage compression structure with a second-stage cylinder 6, a third-stage compression structure with a third-stage cylinder 9, a fourth-stage compression structure with a fourth-stage cylinder 12 and a fifth-stage compression structure with a fifth-stage cylinder 15, namely, two piston compression devices are provided with two first-stage cylinders 3, two second-stage cylinders 6, two third-stage cylinders 9, two fourth-stage cylinders 12 and two fifth-stage cylinders 15 in total, respective air inlets of the two first-stage cylinders 3 are converged and then communicated with an air inlet of an air compressor through a first-stage air inlet pipe 4, respective air outlets of the two first-stage cylinders 3 are converged and then communicated with a second-stage air inlet pipe 7 through a first-stage air outlet pipe 5, respective air inlets of the two second-stage cylinders 6 are converged and then communicated with a second-stage air inlet pipe 7, the air outlets of the two three-stage cylinders 9 are converged and then communicated with a four-stage air inlet pipe 13 through a three-stage air outlet pipe 11, the air inlets of the two four-stage cylinders 12 are converged and then communicated with the four-stage air inlet pipe 13, the air outlets of the two four-stage cylinders 12 are converged and then communicated with a five-stage air inlet pipe 16 through a four-stage air outlet pipe 14, the air inlets of the two five-stage cylinders 15 are converged and then communicated with the five-stage air inlet pipe 16, and the air outlets of the two five-stage cylinders.

During operation, the outside air filters the back through air cleaner, enter into two one-level jars 3 and carry out the one-level compression simultaneously, the air after the one-level compression enters into two second grade jars 6 and carries out the second grade compression simultaneously from two one-level jars 3 output back, the air after the second grade compression enters into two tertiary jars 9 and carries out the tertiary compression simultaneously from two second grade jars 6 output back, the air after the tertiary compression enters into two level four jars 12 and carries out the level four compression simultaneously from two three jars output back, the air after the level four compression enters into two level five jars 15 and carries out the level five compression simultaneously from two level four jars 12 output back, treat that the level five compression joins the back and export high-pressure gas together. The double-pump-head air compressor combines two air compressor structures to share one box body 1 structure, and two sets of piston compression devices are arranged in the same box body 1 structure, so that one box body 1 structure is saved, and then two sets of piston compression devices are driven by sharing one crankshaft 2, so that the double-pump-head air compressor is more compact and simplified in structure and low in cost compared with the two existing independent air compressor structures; moreover, the air inlet and outlet of the two first-stage cylinders 3, the two second-stage cylinders 6, the two third-stage cylinders 9, the two fourth-stage cylinders 12 and the two fifth-stage cylinders 15 are all combined together, so that high-pressure air with twice flow rate as that of a single-piston compression device can be finally output, and the air compression flow rate is improved.

As shown in fig. 3 and 4, the crankshaft 2 includes two first eccentric portions 21, two second eccentric portions 23 and a main shaft 25, the two first eccentric portions 21 and the two second eccentric portions 23 respectively separate the main shaft 25 into three sections which are independent and separate from each other, a first eccentric shaft 22 is fixedly installed between the two first eccentric portions 21, a second eccentric shaft 24 is fixedly installed between the two second eccentric portions 23, five sleeving grooves are formed in the first eccentric shaft 22, the first eccentric shaft 22 and the second eccentric shaft 24 have the same structure, and connecting rods of five piston compression structures of the two piston compression devices are respectively sleeved on the five sleeving grooves of the first eccentric shaft 22 and the second eccentric shaft 24. The working principle and the concrete structure of the piston compression structure are the prior art, and are not described in detail herein.

Further, the first eccentric portion 21 and the second eccentric portion 23 have the same structure, the first eccentric shaft 22 and the second eccentric shaft 24 are respectively located on two sides of the main shaft 25, and the distance from the axis of the first eccentric shaft 22 to the axis of the main shaft 25 is equal to the distance from the axis of the second eccentric shaft 24 to the axis of the main shaft 25. That is to say, first eccentric shaft 22 and second eccentric shaft 24 are symmetrical about main shaft 25, therefore need not to increase in addition the balancing weight just can realize relatively stable dynamic balance by oneself, and the vibrational force that the piston reciprocating promotion in two piston compression devices produced can effectively offset each other, makes whole air compressor machine work comparatively stable, and is not vibrated.

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.

Claims

1. The utility model provides a double pump head air compressor machine, includes a box (1), be equipped with bent axle (2) on box (1), its characterized in that: the piston compression device is characterized in that the crankshaft (2) is connected with two piston compression devices, each piston compression device comprises a plurality of piston compression structures, each piston compression structure is installed on the box body (1) and comprises a connecting rod, and the connecting rod is sleeved on the crankshaft (2).

2. The air compressor with two pump heads as claimed in claim 1, wherein the crankshaft (2) comprises two first eccentric portions (21), two second eccentric portions (23) and a main shaft (25), the two first eccentric portions (21) and the two second eccentric portions (23) respectively separate the main shaft (25) into three sections which are independent and separate from each other, a first eccentric shaft (22) is fixedly installed between the two first eccentric portions (21), a second eccentric shaft (24) is fixedly installed between the two second eccentric portions (23), and connecting rods of each piston compression structure of the two piston compression devices are respectively sleeved on the first eccentric shaft (22) and the second eccentric shaft (24).

3. The air compressor as claimed in claim 2, wherein the first eccentric shaft (22) and the second eccentric shaft (24) have the same structure, the first eccentric portion (21) and the second eccentric portion (23) have the same structure, the first eccentric shaft (22) and the second eccentric shaft (24) are respectively located on opposite sides of the main shaft (25) and the distance from the axis of the first eccentric shaft (22) to the axis of the main shaft (25) is equal to the distance from the axis of the second eccentric shaft (24) to the axis of the main shaft (25).

4. The air compressor with double pump heads as claimed in claim 3, wherein the piston compression device comprises five piston compression structures with the same structure, namely a first-stage compression structure with a first-stage cylinder (3), a second-stage compression structure with a second-stage cylinder (6), a third-stage compression structure with a third-stage cylinder (9), a fourth-stage compression structure with a fourth-stage cylinder (12) and a fifth-stage compression structure with a fifth-stage cylinder (15), wherein the two piston compression devices comprise two first-stage cylinders (3), two second-stage cylinders (6), two third-stage cylinders (9), two fourth-stage cylinders (12) and two fifth-stage cylinders (15), the two first-stage cylinders (3) are communicated with the air inlet of the air compressor through a first-stage air inlet pipe (4) after respective air inlets are converged, and the two first-stage cylinders (3) are communicated with the second-stage air inlet pipe (7) through a first-stage air outlet pipe (5) after respective air outlets, the air inlets of the two secondary cylinders (6) are converged and then communicated with the secondary air inlet pipe (7), the air outlets of the two secondary cylinders (6) are converged and then communicated with a three-stage air inlet pipe (10) through a secondary air outlet pipe (8), the air inlets of the two three-stage cylinders (9) are converged and then communicated with the three-stage air inlet pipe (10), the air outlets of the two three-stage cylinders (9) are converged and then communicated with a four-stage air inlet pipe (13) through a three-stage air outlet pipe (11), the air inlets of the two four-stage cylinders (12) are converged and then communicated with the four-stage air inlet pipe (13), the air outlets of the two four-stage cylinders (12) are converged and then communicated with a five-stage air inlet pipe (16) through a four-stage air outlet pipe (14), the air inlets of the two five-stage cylinders (15) are converged and then communicated with the five-stage air inlet pipe (16), the air outlets of the two five-stage cylinders (15) are converged and output through a five-stage air outlet pipe (17).

5. The air compressor of claim 1, 2, 3 or 4, wherein the first eccentric shaft (22) is provided with five engaging grooves.