CN204352857U - A kind of magnetic driving equipment - Google Patents

Abstract

The utility model relates to a magnetic driving device, which comprises a frame, in which an upper connecting sleeve, a middle connecting sleeve and a lower fixing sleeve are coaxially distributed sequentially from top to bottom; the upper connecting sleeve is connected to the motor On the output shaft, its bottom is supported on the middle connecting sleeve by a slewing bearing A; the upper end surface of the middle connecting sleeve is fixedly connected with the lower end surface of the upper connecting sleeve, and a gland is installed on the lower end surface; installed in the middle connecting sleeve There are a transmission shaft, an inner magnetic ring, an isolation sheath and an outer magnetic ring that are coaxially distributed from the inside to the outside and extend axially along the middle connecting sleeve. The utility model has the advantages that: the magnetic drive device of the present invention has a simple structure and good magnetic drive effect, which avoids the phenomenon of insufficient magnetic drive of the magnetic drive device in large gaps and seizure in small gaps, and improves the working efficiency of the equipment.

Description

A magnetic drive

technical field

The utility model relates to a magnetic driving device, in particular to a magnetic driving device for a reaction kettle, which has good magnetic driving effect and avoids seizure.

Background technique

The stirring shaft of the chemical reaction kettle generally adopts mechanical transmission, and uses packing seal or mechanical seal. This kind of transmission device is still suitable for the working conditions where the pressure in the kettle is not high or the requirements for leakage are not very strict, and vice versa.

At present, there is a magnetic drive, which solves the inherent dynamic sealing problem of the traditional transmission device, and converts the dynamic sealing point into a static sealing point, which improves the safety of the production process.

The utility model patent with the patent number CN 202951435U mentions a magnetic drive device for a metal lithium dispersion tank, including a cooling frame sleeve that can be fixedly installed on the upper part of the stirring tank, a power device, a magnetic drive device, a drive shaft, a bearing and an auxiliary cooling device The upper end of the cooling rack cover is fixedly equipped with a power device, the lower part of the power output shaft of the power device is located at the upper part of the inner cavity of the cooling rack cover, and the middle part of the inner cavity of the cooling rack cover is equipped with a magnetic transmission device. The transmission shaft is installed through the bearing, and the lower end of the transmission shaft protrudes below the cooling frame sleeve and can drive the stirring shaft of the stirring tank below to rotate; the magnetic transmission device includes an outer magnetic cylinder and an inner magnetic cylinder, and the outer magnetic cylinder is fixed on the power output shaft In the lower part, the upper end of the transmission shaft is fixed with an inner magnetic cylinder, which is set inside the outer magnetic cylinder and can rotate together with the outer magnetic cylinder; there is a cooling liquid cavity in the body of the cooling frame sleeve, and the auxiliary cooling device passes through the pipeline and the cooling liquid cavity It is connected and can cool down the cooling rack.

In the above-mentioned patents, the gap between the inner magnetic cylinder and the outer magnetic cylinder of the magnetic drive device is large, and the phenomenon of insufficient driving may occur, and the magnetic drive effect is poor, which affects the normal operation of the kettle.

Therefore, it is imperative to develop a magnetic driving device that has a good magnetic driving effect and can avoid the phenomenon of seizure. After retrieving relevant documents, no technical solutions identical or similar to the utility model are found.

Utility model content

The technical problem to be solved by the utility model is to provide a magnetic drive device for a reaction kettle, which has a simple structure, a good magnetic drive effect, and can avoid seizure.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a magnetic drive device, the drive device is driven by a motor to drive the stirring shaft in the kettle to rotate, and its innovative point is that it includes a frame, which is composed of An upper connecting sleeve, a middle connecting sleeve and a lower fixing sleeve are distributed coaxially in sequence from top to bottom, and the lower fixing sleeve is fixedly installed on the bottom of the frame;

The upper connection sleeve is connected to the output shaft of the motor, and its bottom is supported by a slewing bearing A on the upper end surface of the middle connection sleeve;

The upper end surface of the middle connecting sleeve is fixedly connected with the lower end surface of the upper connecting sleeve, and a gland is installed on the lower end surface; inside the middle connecting sleeve, there are coaxially distributed sequentially from inside to outside, and extend along the axial direction of the middle connecting sleeve. Transmission shaft, inner magnetic ring, isolation sheath and outer magnetic ring; the lower end surface of the outer magnetic ring is supported by the slewing bearing B on the upper end surface of the gland; Set, and extend the lower fixed sleeve to drive the stirring shaft to rotate. The drive shaft is driven by the inner magnetic ring, and is supported by a slewing bearing C on the upper end surface of the lower fixed sleeve.

Further, the distance between the inner magnetic ring and the isolation sheath and the distance between the outer magnetic ring and the isolation sheath are both 0.6-0.7mm.

The utility model has the advantages of:

The gaps between the inner magnetic ring and the isolating sheath and the outer magnetic ring and the isolating sheath of the utility model are both 0.6-0.7mm, which avoids the phenomenon that the magnetic driving device is not sufficiently driven in a large gap and is seized by a small gap, and improves the The working efficiency of the equipment, the magnetic driving device has a simple structure and good magnetic driving effect, which improves the safety of the production process.

Description of drawings

Fig. 1 is a structural schematic diagram of the magnetic drive device of the present invention.

Detailed ways

Example 1

As shown in Figure 1, the utility model discloses a magnetic drive device, which is driven by a motor to drive the stirring shaft in the kettle to rotate, and includes a frame 1, which is distributed coaxially from top to bottom in the frame 1 An upper connection sleeve 2, a middle connection sleeve 3 and a lower fixing sleeve 4, the lower fixing sleeve 4 is fixedly installed on the bottom of the frame 1;

The upper connection sleeve 2 is connected to the output shaft 13 of the motor, and its bottom is supported on the upper end surface of the middle connection sleeve 3 by a slewing bearing A5;

The upper end face of the middle connecting sleeve 3 is fixedly connected with the lower end face of the upper connecting sleeve 2, and a gland 6 is installed on the lower end face; Extended transmission shaft 7, inner magnetic ring 8, isolation sheath 9 and outer magnetic ring 10; the lower end surface of the outer magnetic ring 10 is supported on the upper end surface of the gland 6 by the slewing bearing B11; the transmission shaft 7 extends out of the middle connecting sleeve 3 , and stretch out the lower fixed sleeve 4 to drive the stirring shaft to rotate, the transmission shaft 7 is driven by the inner magnetic ring 8, and is supported on the upper end surface of the lower fixed sleeve 4 by a slewing bearing C12.

In this embodiment, in order to avoid the phenomenon that the large gap magnetic drive of the magnetic drive device is not enough, and the small gap is seized, and the working efficiency of the equipment is improved, the inner magnetic ring 8 and the isolation sheath 9 and the outer magnetic ring 10 and the isolation sheath 9 The distance between them is 0.6-0.7mm.

Working principle, the motor output shaft 13 drives the upper connecting sleeve 2 to rotate, drives the middle connecting sleeve 3 and the outer magnetic ring 10 to rotate, under the action of magnetic force, the inner magnetic ring 8 rotates, thereby driving the transmission shaft 7 to rotate, the transmission shaft 7 The stirring shaft in the transmission kettle rotates to realize stirring.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. A magnetic driving device, the driving device is driven by a motor and drives the stirring shaft in the kettle to rotate, it is characterized in that: it comprises a frame, and in the frame, an upper connecting sleeve and an upper connection sleeve are coaxially distributed from top to bottom The middle connection sleeve and the lower fixing sleeve are fixedly installed on the bottom of the frame; The upper connection sleeve is connected to the output shaft of the motor, and its bottom is supported by a slewing bearing A on the upper end surface of the middle connection sleeve; The upper end surface of the middle connecting sleeve is fixedly connected with the lower end surface of the upper connecting sleeve, and a gland is installed on the lower end surface; inside the middle connecting sleeve, there are coaxially distributed sequentially from inside to outside, and extend along the axial direction of the middle connecting sleeve. Transmission shaft, inner magnetic ring, isolation sheath and outer magnetic ring; the lower end surface of the outer magnetic ring is supported by the slewing bearing B on the upper end surface of the gland, and cooperates with the connecting sleeve in the middle; the transmission shaft extends out of the middle to connect Set, and extend the lower fixed sleeve to drive the stirring shaft to rotate. The drive shaft is driven by the inner magnetic ring, and is supported by a slewing bearing C on the upper end surface of the lower fixed sleeve. 2 . The magnetic driving device according to claim 1 , wherein the gaps between the inner magnetic ring and the isolation sheath and the outer magnetic ring and the isolation sheath are both 0.6-0.7 mm.