CN210343697U

CN210343697U - Screw compressor transmission system

Info

Publication number: CN210343697U
Application number: CN201920906036.4U
Authority: CN
Inventors: 薛莲
Original assignee: Tianjin Jinhui Air Compressor Manufacturing Co ltd
Current assignee: Tianjin Jinhui Air Compressor Manufacturing Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-17
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a screw air compressor transmission system, which comprises a screw host, a driving motor and a shaft coupling, and also comprises a central bracket arranged on the screw host and a motor end cover arranged on the driving motor; the central bracket comprises a conical bracket body, a bracket flange, a bracket connecting hole, a bracket flange clamping boss, a host connecting hole and a host shaft mounting hole; the motor end cover comprises an end cover body, a motor connecting hole, a shaft seat, a motor shaft mounting hole, an end cover mounting disc and a clamping groove, wherein the clamping boss can be clamped into the clamping groove, and the end cover connecting hole is formed in the end cover. The transmission system ensures that the centers of the main machine and the motor working shaft are kept on a central line; the working shaft only bears the torsion force during operation and has no radial force, so that the service lives of the main machine and the motor are prolonged; the vibration in the operation process is reduced, the damage degree of the elastic element of the coupler is reduced, the service life of the elastic element is prolonged, and the maintenance and the replacement are convenient.

Description

Screw compressor transmission system

Technical Field

The utility model belongs to the technical field of air compressor, especially, relate to a screw compressor machine transmission system.

Background

The working principle of the double-screw air compressor is as follows: a pair of precisely machined and meshed rotors are arranged in a machine body of a screw rod main machine of the compressor, a driving motor drives a male rotor through an elastic coupling, and then the male rotor drives a female rotor to rotate at high speed. Along with the continuous reduction of the interdental volume, the air sucked from the air filter is continuously compressed to increase the pressure, and when the interdental volume is communicated with an exhaust port of the compressor, the compressed air is discharged from the exhaust port and enters the oil-gas separator for oil-gas separation. The gas after oil-gas separation is discharged out of the machine through the minimum pressure valve, the aftercooler and the drain valve in sequence for customers to use. The separated lubricating oil is settled to the bottom of the oil-gas separator, and is cooled and returned to the working cavity of the screw main machine for recycling under the action of pressure difference.

The transmission system of the screw air compressor generally comprises a screw main machine, a driving motor, a coupling (transmission mechanism), a connecting piece and the like. The working shaft of the screw main machine and the working shaft of the driving motor are directly connected and driven through a coupler, and an elastic element with buffering and vibration damping functions is generally installed in the coupler so as to protect the driving motor and the screw main machine from being damaged or not. Then only through the hookup of shaft coupling, host computer working shaft and motor working shaft are difficult to keep on a central line, and in the air compressor machine operation process, host computer and motor not only need bear torsion, and must bear radial force in addition, and the damage degree of the elastic element of installation on the shaft coupling is big, needs often to change, also can shorten the life of motor and host computer.

Therefore, the transmission system of the existing screw air compressor needs to be improved so as to ensure the concentricity of the working shaft of the main machine and the working shaft of the motor and prolong the service life of each part of the transmission system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a host computer and motor working shaft concentricity are good, operate steady vibration little, long service life's screw compressor machine transmission system.

In order to achieve the above object, the utility model provides a following technical scheme: a screw air compressor transmission system comprises a screw host and a driving motor, wherein a working shaft of the screw host is connected with a working shaft of the driving motor through a coupler; the central bracket comprises a conical bracket body, a bracket flange is arranged at the edge of the large end of the bracket body, a plurality of bracket connecting holes are formed in the bracket flange at equal intervals along the circumferential direction, an annular clamping boss is arranged on the end face of the bracket flange, a plurality of host connecting holes used for being connected with a screw host are formed in the end face of the small end of the bracket body at equal intervals along the circumferential direction, and a host shaft mounting hole is formed in the center of the small end of the bracket body; the motor end cover comprises a circular end cover body, a plurality of motor connecting holes used for being fixedly connected with a driving motor are formed in the end cover body at equal intervals along the circumferential direction, an axle seat is axially arranged on the end cover body, a motor axle mounting hole is formed in the center of the axle seat, an annular end cover mounting disc is arranged opposite to the end cover body, a clamping groove is formed in the inner edge of the end cover mounting disc, a clamping boss can be clamped into the clamping groove, the end cover body and the end cover mounting disc are fixedly connected through a plurality of connecting plates arranged at equal intervals, and a plurality of end cover connecting holes matched with bracket connecting holes are formed in the end cover mounting disc at equal intervals along the.

Preferably, a sealing ring mounting groove is formed in the inner wall of the motor shaft mounting hole.

Preferably, a plurality of ventilation openings are formed in the conical barrel wall of the bracket body.

Preferably, a plurality of reinforcing ribs are arranged between the bracket body and the bracket flange at equal intervals.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the connection of the screw main machine and the driving motor working shaft is realized through the central bracket, the motor end cover and the coupler together, and the centers of the screw main machine and the driving motor working shaft are kept on a central line.

(2) When the screw air compressor transmission system operates, the working shaft only bears torsion and does not have radial force, so that the service lives of the screw main machine and the driving motor are prolonged;

(3) because the driving motor and the screw rod host are connected with the motor end cover through the central bracket, the vibration in the operation process is reduced, the damage degree of the elastic element of the coupler is reduced, the service life of the elastic element is prolonged, the maintenance and the replacement are convenient, and the labor intensity is reduced.

Drawings

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

fig. 2 is a schematic cross-sectional structure view of the center bracket and the motor end cover of the present invention;

FIG. 3 is a schematic structural view of the center bracket of the present invention;

fig. 4 is a schematic structural diagram of the middle motor end cover of the present invention.

In the figure: 1. a screw main machine; 2. a drive motor; 3. a coupling; 4. a center bracket; 5. a motor end cover; 6. a bracket body; 7. a main machine shaft mounting hole; 8. a host machine connecting hole; 9. a vent; 10. a bracket attachment hole; 11. a bracket flange; 12. clamping the boss; 13. reinforcing ribs; 14. an end cap body; 15. an end cover mounting plate; 16. an end cap connection hole; 17. a sealing ring mounting groove; 18. a host machine connecting hole; 19. a motor shaft mounting hole; 20. a shaft seat; 21. a motor connecting hole; 22. the clamping groove.

Detailed Description

The following describes a preferred embodiment of the present invention with reference to the drawings, and the technical solution of a preferred embodiment of the present invention will be clearly and completely described.

Please refer to fig. 1 and fig. 2, the utility model discloses a screw rod host computer 1 and driving motor 2, couple through shaft coupling 3 between 1 working shaft of screw rod host computer and the 2 working shafts of driving motor, its characterized in that: the screw rod driving mechanism further comprises a central bracket 4 arranged on the screw rod main body 1 and a motor end cover 5 arranged on the driving motor 2.

Referring to fig. 3, the central bracket 4 includes a conical bracket body 6, a bracket flange 11 is disposed on a large end edge of the bracket body 6, a plurality of bracket connection holes 10 are circumferentially and equidistantly formed in the bracket flange 11, an annular locking boss 12 is disposed on an end surface of the bracket flange 11, a plurality of host connection holes 8 for connecting with the screw host 1 are circumferentially and equidistantly formed in a small end surface of the bracket body 6, and a host shaft mounting hole 7 is formed in a small end center of the bracket body 6.

Referring to fig. 4, the motor end cover 5 includes a circular end cover body 14, a plurality of motor connection holes 21 for fixedly connecting with the driving motor 2 are formed in the end cover body 14 at equal intervals along the circumferential direction, an axial seat 20 is axially formed in the end cover body 14, a motor shaft mounting hole 19 is formed in the center of the axial seat 20, an annular end cover mounting plate 15 is arranged opposite to the end cover body 14, a locking groove 22 is formed in the inner edge of the end cover mounting plate 15, the locking boss 12 can be locked into the locking groove 22 and is in tolerance fit with the locking groove 22, the end cover body 14 and the end cover mounting plate 15 are fixedly connected through a plurality of connection plates 18 arranged at equal intervals, and a plurality of end cover connection holes 16 matched with the bracket connection holes 10 are formed in the end cover mounting plate.

In this embodiment, the inner wall of the motor shaft mounting hole 19 is provided with a sealing ring mounting groove 17, so that the sealing performance in the mounting process is improved.

In this embodiment, the conical wall of the bracket body 6 is provided with a plurality of ventilation openings 9, which is beneficial to ventilation and heat dissipation in the operation of the transmission system.

In this embodiment, a plurality of reinforcing ribs 13 are arranged between the bracket body 6 and the bracket flange 10 at equal intervals, so that the gravity center bracket structure is firmer.

The utility model discloses a theory of operation does: fixedly connecting the central bracket 4 with the screw host 1 through a host connecting hole 8, and enabling a working shaft of the screw host 1 to pass through a host shaft mounting hole 7; fixedly connecting a motor end cover 5 with a driving motor 2 through a motor connecting hole 21, and installing a working shaft of the driving motor 2 on a shaft seat 20 through a motor shaft installing hole 19; the working shaft of the screw host 1 is connected with the working shaft of the driving motor 2 through a coupler 3, and an elastic element is arranged on the coupler 3; the clamping bosses 12 are embedded into the clamping grooves 22, the bracket connecting holes 10 are aligned with the end cover connecting holes 16, and the bracket connecting holes 10 are fixed with the end cover connecting holes 16 through mounting screws, so that the concentricity of the screw main machine and the driving motor working shaft is ensured.

The utility model realizes the connection of the working shafts of the screw host 1 and the driving motor 2 through the central bracket 4, the motor end cover 5 and the shaft coupling 3, the clamping boss 12 and the clamping groove 22 are in tolerance fit, and the centers of the working shafts of the screw host and the driving motor are ensured to be kept on a central line; the working shaft only bears the torsion force when the driving motor 2 and the screw rod main machine 1 run, and has no radial force, so that the service lives of the screw rod main machine 1 and the driving motor 2 are prolonged; because the driving motor 2 is connected with the screw rod main machine 1 through the central bracket 4 and the motor end cover 5, the vibration in the operation process is reduced, the damage degree of the elastic element of the coupler 3 is reduced, the service life of the elastic element is prolonged, the maintenance and the replacement are convenient, and the labor intensity is reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a screw compressor transmission system, includes screw rod host computer (1) and driving motor (2), couples through shaft coupling (3) between screw rod host computer (1) working shaft and driving motor (2) working shaft, its characterized in that: the screw rod driving mechanism further comprises a central bracket (4) arranged on the screw rod main machine (1) and a motor end cover (5) arranged on the driving motor (2);

the central bracket (4) comprises a conical bracket body (6), a bracket flange (11) is arranged at the edge of the large end of the bracket body (6), a plurality of bracket connecting holes (10) are formed in the bracket flange (11) at equal intervals along the circumferential direction, an annular clamping boss (12) is arranged on the end face of the bracket flange (11), a plurality of host connecting holes (8) for connecting with the screw host (1) are formed in the end face of the small end of the bracket body (6) at equal intervals along the circumferential direction, and a host shaft mounting hole (7) is formed in the center of the small end of the bracket body (6);

the motor end cover (5) comprises a circular end cover body (14), a plurality of motor connecting holes (21) which are used for being fixedly connected with a driving motor (2) are formed in the end cover body (14) at equal intervals along the circumferential direction, an axle seat (20) is axially arranged on the end cover body (14), a motor axle mounting hole (19) is formed in the center of the axle seat (20), an annular end cover mounting disc (15) is arranged opposite to the end cover body (14), clamping grooves (22) are formed in the inner edge of the end cover mounting disc (15), clamping bosses (12) can be clamped into the clamping grooves (22), the end cover body (14) and the end cover mounting disc (15) are fixedly connected through a plurality of connecting plates (18) which are arranged at equal intervals, and a plurality of end cover connecting holes (16) matched with bracket connecting holes (10) are formed in the end cover mounting disc (15) at equal.

2. The screw air compressor transmission system according to claim 1, wherein: and a sealing ring mounting groove (17) is formed in the inner wall of the motor shaft mounting hole (19).

3. The screw air compressor transmission system according to claim 1, wherein: the conical barrel wall of the bracket body (6) is provided with a plurality of ventilation openings (9).

4. The screw air compressor transmission system according to claim 1, wherein: a plurality of reinforcing ribs (13) are arranged between the bracket body (6) and the bracket flange (11) at equal intervals.