CN219101583U

CN219101583U - Screw air compressor

Info

Publication number: CN219101583U
Application number: CN202223580430.4U
Authority: CN
Inventors: 陈国庆; 王益峰
Original assignee: Changzhou Dasen Machinery Co ltd
Current assignee: Changzhou Dasen Machinery Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-30
Anticipated expiration: 2032-12-31

Abstract

The utility model discloses a screw air compressor, which comprises a shell, wherein one side of the shell is penetrated and movably connected with a transmission shaft, one end of the transmission shaft is sleeved with a male screw, two ends of the transmission shaft are respectively and fixedly connected with a first piston and a second piston through bolts, the inner wall of the shell is movably connected with a driven shaft, one end of the driven shaft is sleeved with a female screw, two ends of the driven shaft are respectively and fixedly connected with the first piston and the second piston through bolts, and two sides of the shell are respectively and fixedly connected with an air outlet flange and an air inlet flange through bolts. When the utility model is used, the male screw and the female screw which rotate at high speed are axially offset, the first piston extrudes hydraulic oil, the hydraulic oil flows to the second piston at the other end through the second channel, the male screw and the female screw are moved to the opposite direction of the offset through the second piston, and the offset axial force is counteracted in the same way when the male screw and the female screw are reversely moved, so that the male screw and the female screw stably rotate.

Description

Screw air compressor

Technical Field

The utility model relates to the technical field of air compressors, in particular to a screw air compressor.

Background

The screw air compressor is an oil injection single-stage double-screw compressor, is divided into a single-screw air compressor and a double-screw air compressor, adopts high-efficiency transmission, drives a host machine to rotate for air compression, cools compressed air in the host machine through oil injection, separates air and oil mixed gas exhausted by the host machine through coarse separation and fine separation, separates oil in the compressed air, and finally obtains clean compressed air. The cooler is used for cooling the compressed air and the oil.

The double screw air compressor uses two intermeshing's threaded rod, divide into positive spiral and negative spiral, positive spiral and negative spiral intermeshing, and the meshing space diminishes again, compresses the air, and general double screw air compressor when using, positive spiral and negative spiral high-speed rotation can be to axial displacement, causes threaded rod and shell inner wall friction serious, makes the compressor damage, can not satisfy actual demand.

Disclosure of Invention

The utility model aims to solve the defects that when a common double-screw air compressor is used in the prior art, a male screw and a female screw rotate at high speed and move axially, so that a threaded rod and the inner wall of a shell are severely rubbed, and the compressor is damaged.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a screw air compressor, includes the shell, one side of shell runs through swing joint has the transmission shaft, the male screw has been cup jointed to the one end of transmission shaft, the both ends of transmission shaft are respectively through first piston of bolt fixedly connected with and second piston, swing joint has the driven shaft on the inner wall of shell, the female screw has been cup jointed to the one end of driven shaft, the both ends of driven shaft are respectively through first piston of bolt fixedly connected with and second piston, the both sides of shell are respectively through bolt fixedly connected with flange and flange of admitting air, first passageway and second passageway have been seted up to the inside of shell, peg graft respectively to return oil pipe at the top and the bottom of shell, lubricating arrangement is installed at the top of shell.

As a still further scheme of the utility model, the lubricating device comprises a lubricating oil tank, a guide pipe, friction blocks, oil guide holes and springs, wherein the lubricating oil tank is fixedly connected to the top of the shell through bolts, the guide pipe is inserted into the bottom of the lubricating oil tank, the friction blocks are movably connected to the inner wall of the top of the shell, the plurality of oil guide holes are formed in the tops of the friction blocks, and the springs are fixedly connected to one side of each friction block through bolts.

As a still further scheme of the utility model, one end of the transmission shaft is provided with a coupling key slot.

As a still further scheme of the utility model, one side of the shell is fixedly connected with two mounting plates through bolts.

As a still further proposal of the utility model, the two sides of the shell are respectively fixedly connected with a handle through bolts.

As a still further proposal of the utility model, the top of the lubricating oil tank is inserted with a rubber plug.

As a still further scheme of the utility model, the bottom of the friction block is fixedly connected with a friction plate through a bolt.

The beneficial effects of the utility model are as follows:

1. when the hydraulic oil pump is used, hydraulic oil is added between the first piston and the second piston, the hydraulic oil is connected to the motor through the rotating shaft, the motor rotates to drive the male screw to rotate, the female screw is driven to rotate, the male screw and the female screw are meshed, the meshing space is changed from small to large, air is sucked through the air inlet flange, compressed air is discharged through the air outlet flange, the male screw and the female screw which rotate at high speed are axially offset, the first piston extrudes the hydraulic oil, the hydraulic oil flows to the second piston at the other end through the second channel, the male screw and the female screw are moved to the opposite direction of offset through the second piston, and during the reverse movement, the offset axial force is counteracted, so that the male screw and the female screw stably rotate.

2. When the lubricating oil tank is used, lubricating oil is added into the lubricating oil tank, the rubber plug is plugged, the lubricating oil is prevented from leaking, the male screw and the female screw rotate, when the friction force of the lubricating oil is increased, the friction force between the female screw and the friction plate is increased, the friction block slides, the spring is compressed, and the lubricating oil flows into the shell through the guide pipe and the oil guide hole, so that the male screw and the female screw are lubricated, and the rotation is stable.

3. Due to the design of the handle and the mounting plate, the handle is convenient to move the shell, and the mounting plate has the function of enabling the shell to be convenient to mount.

Drawings

FIG. 1 is a schematic diagram of a screw air compressor according to the present utility model;

FIG. 2 is a schematic rear view of a screw air compressor according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a screw air compressor according to the present utility model;

fig. 4 is a schematic diagram of a friction block structure of a screw air compressor according to the present utility model.

In the figure: 1. a housing; 2. coupling key groove; 3. a transmission shaft; 4. a mounting plate; 5. a handle; 6. a lubrication oil tank; 7. a rubber stopper; 8. an air outlet flange; 9. an air inlet flange; 10. a first piston; 11. a first channel; 12. a second piston; 13. an oil return pipe; 14. a second channel; 15. a male screw; 16. a driven shaft; 17. a female screw; 18. a conduit; 19. a friction block; 20. a friction plate; 21. an oil guide hole; 22. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. It should be noted that the terms "mounted," "connected," and "disposed" are to be construed broadly, unless explicitly stated or defined otherwise, and that the particular meaning of such terms in this patent will be understood by those of ordinary skill in the art, as appropriate.

Referring to fig. 1-4, a screw air compressor comprises a housing 1, one side of the housing 1 is penetrated and movably connected with a transmission shaft 3, one end of the transmission shaft 3 is sleeved with a male screw 15, two ends of the transmission shaft 3 are respectively fixedly connected with a first piston 10 and a second piston 12 through bolts, the inner wall of the housing 1 is movably connected with a driven shaft 16, bearings are arranged at two ends of the transmission shaft 3 and the driven shaft 16, one end of the driven shaft 16 is sleeved with a female screw 17, the male screw 15 and the female screw 17 are in meshed transmission, two ends of the driven shaft 16 are respectively fixedly connected with the first piston 10 and the second piston 12 through bolts, a movable space is reserved between the first piston 10 and the second piston 12 and the housing 1, two sides of the housing 1 are respectively fixedly connected with an air outlet flange 8 and an air inlet flange 9 through bolts, a first channel 11 and a second channel 14 are respectively arranged in the housing 1, an oil return pipe 13 is respectively inserted at the top and the bottom of the housing 1, the first channel 11 and the oil return pipe 13 are communicated, and a lubricating device is arranged at the top of the housing 1.

According to the utility model, the lubricating device comprises a lubricating oil tank 6, a guide pipe 18, friction blocks 19, oil guide holes 21 and springs 22, wherein the top of a shell 1 is fixedly connected with the lubricating oil tank 6 through bolts, the guide pipe 18 is inserted into the bottom of the lubricating oil tank 6, the other end of the guide pipe 18 is inserted into the shell 1, the friction blocks 19 are movably connected onto the inner wall of the top of the shell 1, the plurality of oil guide holes 21 are formed in the top of the friction blocks 19, one side of each friction block 19 is fixedly connected with the springs 22 through bolts, and the springs 22 are used for enabling the friction blocks 19 to return.

Especially, shaft coupling keyway 2 has been seted up to the one end of transmission shaft 3, and two mounting panels 4 of bolt fixedly connected with are passed through to one side of shell 1, and the effect of mounting panel 4 is so that shell 1 simple to operate, and bolt fixedly connected with handle 5 is passed through respectively to the both sides of shell 1, and handle 5 is convenient to the removal of shell 1, and the top of lubricating oil tank 6 is pegged graft and is had rubber buffer 7, and rubber buffer 7 prevents that lubricating oil from leaking, and friction plate 20 is passed through bolt fixedly connected with in the bottom of friction block 19.

Working principle: before use, lubricating oil is added into the lubricating oil tank 6, the rubber plug 7 is plugged, lubricating oil leakage is prevented, hydraulic oil is added between the first piston 10 and the second piston 12, the motor is connected to the motor through the rotating shaft 3, the motor rotates to drive the male screw 15 to rotate to drive the female screw 17 to rotate, the male screw 15 and the female screw 17 are meshed, the meshing space is increased from small to large, air is sucked through the air inlet flange 9, compressed air is discharged through the air outlet flange 8, the male screw 15 and the female screw 17 rotating at high speed are axially offset, the first piston 10 extrudes the hydraulic oil, the hydraulic oil flows to the second piston 12 at the other end through the second channel 14, the male screw 15 and the female screw 17 are moved in the opposite direction of the offset through the second piston 12, and in the same way, offset axial force is offset, so that the male screw 15 and the female screw 17 stably rotate, when the friction force of the lubricating oil is increased, the friction force between the female screw 17 and the friction plate 20 increases, the friction block 19 slides, the compression spring 22, the lubricating oil flows into the housing 1 through the guide tube 18 and the oil guide hole 21, so that the male screw 15 and the female screw 17 stably rotate.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a screw air compressor, includes shell (1), its characterized in that, one side of shell (1) runs through and rotates and be connected with transmission shaft (3), male screw (15) have been cup jointed to the one end of transmission shaft (3), first piston (10) of both ends fixedly connected with and second piston (12) respectively of transmission shaft (3), rotate on the inner wall of shell (1) and be connected with driven shaft (16), female screw (17) have been cup jointed to the one end of driven shaft (16), the both ends of driven shaft (16) are fixedly connected with first piston (10) and second piston (12) respectively, the both sides of shell (1) are fixedly connected with flange (8) and flange (9) of admitting air respectively, first passageway (11) and second passageway (14) have been seted up to the inside of shell (1), oil return pipe (13) have been pegged graft respectively to the top and the bottom of shell (1), lubricating arrangement is installed at the top of shell (1).

2. The screw air compressor according to claim 1, wherein the lubrication device comprises a lubrication oil tank (6), a guide pipe (18), a friction block (19), an oil guide hole (21) and a spring (22), the top of the housing (1) is fixedly connected with the lubrication oil tank (6), the guide pipe (18) is inserted into the bottom of the lubrication oil tank (6), the friction block (19) is slidingly connected to the inner wall of the top of the housing (1), the plurality of oil guide holes (21) are formed in the top of the friction block (19), and one side of the friction block (19) is fixedly connected with the spring (22).

3. Screw air compressor according to claim 1, characterized in that one end of the drive shaft (3) is provided with a coupling key slot (2).

4. Screw air compressor according to claim 1, characterized in that one side of the housing (1) is fixedly connected with two mounting plates (4).

5. Screw air compressor according to claim 1, characterized in that the two sides of the housing (1) are fixedly connected with handles (5) respectively.

6. Screw air compressor according to claim 2, characterized in that the top of the lubrication tank (6) is plugged with a rubber plug (7).

7. Screw air compressor according to claim 2, characterized in that the friction plate (20) is fixedly connected to the bottom of the friction block (19).