CN106224552B - A kind of magnetic fat sealing device of use spraying cooling mode - Google Patents

Abstract

The invention discloses a magnetic grease sealing device adopting a spray cooling method. It includes a rotating shaft, an end cover plate, pole pieces, magnetic grease and permanent magnets. An annular spray pipe is fixed on one side of the end cover plate, and the spray pipe is filled with cooling medium. The spray pipe and pole pieces are located on the end cover. On the same side of the disk, the spray pipe is arranged around the rotating shaft, and a plurality of spray heads are arranged at intervals along the circumference at the inner side of the spray pipe and corresponding to the pole shoe, and the outlets of the spray heads are aligned with the pole shoe. This method uses a cooling medium with a low boiling point and good heat exchange effect to spray and cool the pole shoes of the magnetic grease sealing device, which can greatly reduce the operating temperature of the magnetic grease during operation, and effectively improve the service life and reliability of the magnetic grease. The whole device has a simple structure. , Easy assembly and so on.

Description

A magnetic grease sealing device adopting spray cooling method

technical field

The invention belongs to the technical field of magnetic grease sealing, and in particular relates to a magnetic grease sealing device adopting a spray cooling method.

Background technique

As a new type of sealing technology, the magnetic grease sealing technology is getting more and more attention in the sealing industry. The cooling method of the conventional magnetic grease sealing device is to open a cooling water channel on the pole piece, and the cooling water channel is cooled by water, but it is limited by the structure. The cooling water channel on the pole shoe is relatively complicated, and the structure of the water channel is limited by the pole shoe. The size of the water channel is generally small, resulting in a small cooling water contact area, resulting in limited cooling performance, which limits the increase in the seal diameter of the magnetic grease seal device. The increase in the number of stages and the scope of use of the magnetic grease sealing device.

Contents of the invention

The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology, and provide a magnetic grease sealing device with a simple structure and good cooling effect, which adopts a spray cooling method.

The technical solution adopted by the present invention is: a magnetic grease sealing device adopting a spray cooling method, including a rotating shaft, an end cover disk, a pole shoe, a magnetic grease and a permanent magnet, the rotating shaft passes through the end cover disk, and the pole shoe It is located on one side of the end cover disk and is arranged on the surface of the rotating shaft along the circumference, the magnetic grease is arranged between the pole shoe and the surface of the rotating shaft, the permanent magnet is arranged inside the pole shoe, and an annular spray pipe is fixed on one side of the end cover disk , the spray pipe is filled with cooling medium, the spray pipe and the pole shoe are located on the same side of the end cover plate, the spray pipe is arranged around the rotating shaft, and the inner side of the spray pipe and the corresponding position of the pole shoe are arranged at intervals along the circumference There are a plurality of shower heads, the outlets of which are aimed at the pole piece.

Further, a plurality of support seats are provided at intervals along the circumference of the rotating shaft on the end cover plate, hoops are installed on the support seats, and the spray pipe is fixed on the end cover plate through a plurality of hoops.

Further, one end of the spray pipe is provided with a cooling medium inlet, and the other end is blocked and sealed by a bulkhead.

Further, one end of the spray pipe provided with the cooling medium inlet is located at the bottom of the rotating shaft.

Furthermore, the cooling medium is a liquid with a boiling point lower than 50°C under normal pressure.

The beneficial effects of the present invention are: by using a cooling medium with a low boiling point and good heat exchange effect to spray and cool the pole shoes of the magnetic grease sealing device, the operating temperature of the magnetic grease can be greatly reduced during the operation process, and the service life and reliability of the magnetic grease can be effectively improved , At the same time, the application range of the magnetic grease sealing device is expanded, and the whole device has the characteristics of simple structure and convenient assembly.

Description of drawings

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

Fig. 2 is a schematic diagram of the structural layout of the shower pipe and the shower head of the present invention.

In the figure: 1. Rotating shaft, 2. End cover plate, 3. Screw, 4. Support seat, 5. Clamp, 6. Spray pipe, 7. Fixing seat, 8. Spray head, 9. Cooling medium, 10. Pole shoe, 11. Magnetic grease, 12. Permanent magnet, 13. Bulk head, 14. Cooling medium inlet.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

As shown in Figures 1 and 2, the present invention includes a rotating shaft 1, an end cover disk 2, a pole shoe 10, a magnetic grease 11 and a permanent magnet 12, the rotating shaft 1 passes through the end cover disk 2, and the pole shoe 10 is located at the end One side of the cover disk 2 is arranged on the surface of the rotating shaft 1 along the circumference, the magnetic grease 11 is arranged between the pole shoe 10 and the surface of the rotating shaft 1, the permanent magnet 12 is arranged inside the pole shoe 10, and one side of the end cover disk 2 is fixed There is an annular spray pipe 6, which is filled with cooling medium 9, the spray pipe 6 and the pole piece 10 are located on the same side of the end cover plate 2, and the spray pipe 6 is arranged around the rotating shaft 1, The inner side of the spray pipe 6 and the position corresponding to the pole shoe are provided with a plurality of spray heads 8 at intervals along the circumference. 8 Evenly spray and cover the pole piece 10, take away the heat transferred from the magnetic grease 11 to the pole piece 10 in time, and then reduce the operating temperature of the magnetic grease.

In the above scheme, a plurality of supporting bases 4 are arranged at intervals along the circumference of the rotating shaft on the end cover plate 2, clamps 5 are installed on the supporting bases 4, and the spray pipe 6 is fixed on the end cover plate 2 through a plurality of clamps 5, The inside of the spray pipe 2 is provided with a fixing seat 7 for fixing the spray head 8 .

In the above scheme, one end of the spray pipe 6 is provided with a cooling medium inlet 14, and the other end is blocked and sealed by a bulkhead 13. The end of the spray pipe 6 provided with the cooling medium inlet is located at the bottom of the rotating shaft 1, so that the cooling medium can generate a certain amount of water in the spray pipe. The cooling medium sprays out the shape of an air mist fan from the spray head to take away the heat generated by the magnetic grease in time.

In the above solution, the cooling medium 9 is a liquid with a boiling point lower than 50° C. under normal pressure. The cooling medium 9 is preferably a liquid with a lower boiling point, which can take away the heat generated by the magnetic grease in time and improve the heat dissipation efficiency of the pole piece.

In the present invention, the rotating shaft 1, the end cover disk 2, the pole shoe 10, the magnetic grease 11, and the permanent magnet 12 constitute a magnetic grease sealing device, and the end cover disk 2 provides installation support for the entire magnetic grease sealing device, and the permanent magnet 12 is located between the pole shoes 10 , the magnetic grease 11 is adsorbed between the rotating shaft 1 and the pole piece 10 under the action of the permanent magnet 12. When the rotating shaft 1 rotates, the friction between the magnetic grease 11, the rotating shaft 1 and the pole piece 10 will generate heat and transfer to the pole piece 10 superior. The support base 4 is located outside the pole shoe 10 and fixed on the end cover plate 2. The spray pipe 6 is installed on the support base 4 and fastened by the clamp 5 and the screw 3 to prevent the spray pipe 6 from falling off. One end of the spray pipe is blocked with a bulky head 13, so that when the cooling medium 9 enters from the cooling medium inlet 14 at the other end of the spray pipe 6, a certain pressure will be generated in the spray pipe 6, which is conducive to the cooling medium 9 in the shape of an aerosol fan. Spraying from the spray head 8 onto the pole shoe 10 can increase the heat dissipation speed of the pole shoe 10. The spray head 8 is evenly installed on the spray pipe 6 through the fixing seat 7, and a plurality of spray pipes are reasonably and evenly arranged on the spray pipe 6. The head 8 can make the cooling medium 9 evenly cover the outer side of the pole piece 10 , and can evenly cool the pole piece 10 .

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention . The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (5)

1. A magnetic grease sealing device adopting a spray cooling method, comprising a rotating shaft (1), an end cover plate (2), a pole piece (10), a magnetic grease (11) and a permanent magnet (12), the rotating shaft ( 1) Through the end cover plate (2), the pole shoe (10) is located on one side of the end cover plate and is arranged on the surface of the rotating shaft (1) along the circumference, and the magnetic grease (11) is arranged on the pole shoe (10) and the rotating shaft ( 1) Between the surfaces, the permanent magnet (12) is arranged inside the pole shoe (10), and it is characterized in that: an annular spray pipe (6) is fixed on one side of the end cover disk (2), and the spray pipe (6) Fill the cooling medium (9), the spray pipe (6) and the pole piece (10) are located on the same side of the end cover plate, the spray pipe (6) is arranged around the shaft (1), The inner side of the spray pipe (6) and the position corresponding to the pole piece (10) are provided with a plurality of spray heads (8) at intervals along the circumference, and the outlets of the spray heads are aligned with the pole piece. 2. A magnetic grease sealing device using spray cooling according to claim 1, characterized in that: the end cover plate (2) is provided with a plurality of supporting seats (4) at intervals along the circumference of the rotating shaft, supporting Clamps (5) are installed on the seat (4), and the spray pipe (6) is fixed on the end cover plate (2) through a plurality of clamps (5). 3. A magnetic grease sealing device using a spray cooling method according to claim 1, characterized in that: one end of the spray pipe (6) is provided with a cooling medium inlet (14), and the other end passes through a bulkhead ( 13) Blockage seal. 4. A magnetic grease sealing device adopting a spray cooling method according to claim 1, characterized in that: the end of the spray pipe (6) provided with the cooling medium inlet is located at the bottom of the rotating shaft (1). 5. A magnetic grease sealing device using spray cooling according to claim 1, characterized in that: the cooling medium (9) is a liquid with a boiling point lower than 50°C under normal pressure.