CN201345603Y

CN201345603Y - Shaft coupling

Info

Publication number: CN201345603Y
Application number: CNU2008201821513U
Authority: CN
Inventors: 王汉力; 蒋波
Original assignee: ZHANGJIAGANG STRENGTH AND INDUSTRIOUS MACHINERY CO Ltd
Current assignee: ZHANGJIAGANG STRENGTH AND INDUSTRIOUS MACHINERY CO Ltd
Priority date: 2008-12-09
Filing date: 2008-12-09
Publication date: 2009-11-11
Anticipated expiration: 2018-12-09

Abstract

The utility model discloses a shaft coupling capable of realizing contactless transmission. The shaft coupling comprises an outer rotor connected with a driving shaft and an inner rotor connected with a driven shaft, and the inner rotor is covered in an isolating sleeve; at least one driven permanent magnet is embedded onto the surface of the inner rotor in the axial direction; a connecting cavity matched with the isolating sleeve is arranged in the outer rotor; and a driving permanent magnet corresponding to the driven permanent magnet is embedded onto the inner wall of the connecting cavity in the axial direction. In the utility model, the driven permanent magnet in the inner rotor and the driving permanent magnet in the outer rotor are matched with each other so that the transmission between the driven shaft and the driving shaft becomes contactless, so that the driven shaft can be enclosed in the isolating sleeve, and raw material in the airtight cavity can be prevented from leaking outwards from a transmission mechanism; and the driving shaft and the driven shaft are mutually independent, thereby facilitating the maintenance.

Description

Shaft coupling

Technical field

The utility model relates to the shaft coupling that is used to connect driving shaft and driven shaft.

Background technology

At present, all come transmission between the motor of measuring pump in the foaming machine and driving measuring pump by mechanical coupling, that is: so-called Contact Transmission, its concrete structure is: the driving shaft of motor extend in the measuring pump, driven shaft by mechanical coupling and measuring pump links, and adopts sealing ring to seal mutually with the cage that is used for seal foaming machine inner chamber.As everyone knows, sealing ring is a consumable accessory, is easy to wear out, in case sealing ring damages, will cause the raw material in the foaming machine to be revealed, and has not only polluted environment, but also has caused economic loss.In addition, when sealing ring is changed, must safeguard whole transmission mechanism and associated components completely knocked down cumbersome.

The utility model content

A technical problem to be solved in the utility model is: a kind of shaft coupling of realizing contactless transmission is provided.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: shaft coupling, comprise: external rotor that links to each other with driving shaft and the internal rotor that links to each other with driven shaft, internal rotor is housed in the separation sleeve, its surface is embedded with at least one driven permanent magnet vertically, open the connection chamber of matching in the described external rotor, be embedded with vertically and the corresponding active permanent magnet of driven permanent magnet on the inwall in connection chamber with separation sleeve.

Evenly be embedded with at least four driven permanent magnets on the surface of described internal rotor, evenly be furnished with corresponding active permanent magnet on the inwall in connection chamber.

The beneficial effects of the utility model are: driven permanent magnet and the active permanent magnet of the utility model by cooperatively interacting in the inside and outside rotor, to become contactless transmission between driven shaft and the driving shaft, make driven shaft to be sealed in the separation sleeve, thus stopped raw material in the airtight cavity from transmission mechanism to external leakage; Because driving shaft and driven shaft are separate, it is quite convenient to safeguard.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;

Among Fig. 1 to Fig. 2: 1, driven shaft, 2, internal rotor, 3, separation sleeve, 4, driven permanent magnet, 5, driving shaft, 6, external rotor, 7, permanent magnet initiatively.

Embodiment

Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.

As shown in Figure 1 and Figure 2, shaft coupling described in the utility model, comprise: external rotor 6 that links to each other with driving shaft 5 and the internal rotor 2 that links to each other with driven shaft 1, internal rotor 2 is housed in the separation sleeve 3, the surface of internal rotor 2 evenly is embedded with 4 driven permanent magnets 4 vertically, offer the connection chamber of matching in the described external rotor 6, evenly be embedded with 4 and driven permanent magnet 4 corresponding active permanent magnets 7 vertically on the inwall in connection chamber with separation sleeve 3.

Shaft coupling described in the utility model is actually a kind of magnetic connection formula shaft coupling, and the rotation of driving shaft 5 passes to driven shaft 1 by the magnetic field between active permanent magnet 7 and the driven permanent magnet 4, has realized the contactless transmission between driving shaft 5 and the driven shaft 1.Like this, driven shaft 1 just can be sealed in the separation sleeve 3 that links to each other with cage, and original movable sealing is transformed into static seal, thus stopped raw material in the airtight cavity from transmission mechanism to external leakage; In addition, because driving shaft 5 and driven shaft 1 are separate, it is quite convenient to safeguard.

Claims

1. shaft coupling, comprise: external rotor that links to each other with driving shaft and the internal rotor that links to each other with driven shaft, it is characterized in that: described internal rotor is housed in the separation sleeve, its surface is embedded with at least one driven permanent magnet vertically, offer the connection chamber of matching in the described external rotor, be embedded with vertically and the corresponding active permanent magnet of driven permanent magnet on the inwall in connection chamber with separation sleeve.

2. shaft coupling as claimed in claim 1 is characterized in that: evenly be embedded with at least four driven permanent magnets on the surface of described internal rotor, evenly be furnished with corresponding active permanent magnet on the inwall in connection chamber.