A MAGNETIC PUMP WITH A SEALING STRUCTURE

Abstract

The present invention provides a magnetic pump with a sealing structure, and belongs to the field of mechanical equipment. The magnetic pump includes a bearing housing, a pump cover, an external magnet, an internal magnet, and an isolation sleeve, the bearing housing is connected to the external magnet by using a drive shaft, the external magnet is sleeved outside the isolation sleeve, the isolation sleeve is sleeved outside the internal magnet, an end, distal from the external magnet, of the internal magnet is connected to a pump shaft, a support is disposed between the pump cover and the bearing housing, a sealing apparatus is disposed at a connection between the support and each of the pump cover and the bearing housing, and a magnetic sealing apparatus configured to prevent a medium in the support from leaking is disposed on the drive shaft. The magnetic pump has a plurality of sealing structures, which can completely prevent medium leakage when the isolation sleeve leaks. The magnetic pump has a good sealing effect and is suitable for large-scale industrial application.

Claims

1. A magnetic pump with a sealing structure, wherein the magnetic pump comprises a bearing housing, a pump cover, an external magnet, an internal magnet, and an isolation sleeve, the bearing housing is connected to the external magnet by using a drive shaft (11), the external magnet is disposed outside the isolation sleeve, the isolation sleeve is sleeved outside the internal magnet, an end, distal from the external magnet, of the internal magnet is connected to a pump shaft, a support is disposed between the pump cover and the bearing housing, and a sealing apparatus is disposed at a connection between the support and each of the pump cover and the bearing housing.

2. The magnetic pump with the sealing structure according to claim 1, wherein a magnetic sealing apparatus configured to prevent a medium in the support from leaking is disposed on the drive shaft.

3. The magnetic pump with the sealing structure according to claim 2, wherein the magnetic sealing apparatus is fixed on the bearing housing.

4. The magnetic pump with the sealing structure according to claim 2, wherein the magnetic sealing apparatus comprises a rotating seal ring, a stationary seal ring, a stationary seal ring O-shaped circle, a magnet, a rotating seal ring seat, a rotating seal ring O-shaped circle, and a compensation ring, the rotating seal ringer is disposed on the rotating seal ring seat, the rotating seal ring O-shaped circle is disposed at a lower end of the rotating seal ring seat, the stationary seal ring is magnetically connected to the rotating seal ring, the magnet is disposed at a lower portion, proximal to the rotating seal ring seat, of the stationary seal ring, the stationary seal ring O-shaped circle is disposed at an upper end of the stationary seal ring, and the compensation ring is disposed between the rotating seal ring seat and the stationary seal ring, and is disposed proximal to the rotating seal ring.

5. The magnetic pump with the sealing structure according to claim 1, wherein the sealing apparatus is a sealing gasket or a sealing ring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 is a schematic structural diagram of a magnetic pump with a sealing structure according to the present invention; and

[0012] FIG. 2 is a schematic structural diagram of a magnetic sealing apparatus in FIG. 1, where

[0013] in the figure, 1—bearing housing, 11—drive shaft, 2—pump cover, 21—support, 22—sealing apparatus, 3—external magnet, 4—internal magnet, 5—isolation sleeve, 6—magnetic sealing apparatus, 61—rotating seal ring, 62—stationary seal ring, 63—stationary seal ring O-shaped circle, 64—magnet, 65—rotating seal ring seat, 66—rotating seal ring O-shaped circle, 67—compensation ring, and 7—pump shaft.

DESCRIPTION OF THE EMBODIMENTS

[0014] The present invention is further described with reference to accompanying drawings and specific embodiments.

Embodiment 1

[0015] As shown in FIG. 1, a magnetic pump with a sealing structure is provided, where the magnetic pump includes a bearing housing 1, a pump cover 2, an external magnet 3, an internal magnet 4, and an isolation sleeve 5, the bearing housing 1 is connected to the external magnet 3 by using a drive shaft 11, the external magnet 3 is disposed outside the isolation sleeve 5, the isolation sleeve 5 is sleeved outside the internal magnet 4, an end, distal from the external magnet 3, of the internal magnet 4 is connected to a pump shaft 7, a support 21 is disposed between the pump cover 2 and the bearing housing 1, and a sealing apparatus 22 is disposed at a connection between the support 21 and each of the pump cover 2 and the bearing housing 1.

[0016] The sealing apparatus 22 is a sealing gasket or a sealing ring.

Embodiment 2

[0017] As shown in FIG. 1, a magnetic pump with a sealing structure is provided, where the magnetic pump includes a bearing housing 1, a pump cover 2, an external magnet 3, an internal magnet 4, and an isolation sleeve 5, the bearing housing 1 is connected to the external magnet 3 by using a drive shaft 11, the external magnet 3 is disposed outside the isolation sleeve 5, the isolation sleeve 5 is sleeved outside the internal magnet 4, an end, distal from the external magnet 3, of the internal magnet 4 is connected to a pump shaft 7, a support 21 is disposed between the pump cover 2 and the bearing housing 1, and a sealing apparatus 22 is disposed at a connection between the support 21 and each of the pump cover 2 and the bearing housing 1. A magnetic sealing apparatus 6 configured to prevent a medium in the support from leaking is disposed on the drive shaft 11. The magnetic sealing apparatus 6 is fixed on the bearing housing 1.

[0018] As shown in FIG. 2, the magnetic sealing apparatus 6 includes a rotating seal ring 61, a stationary seal ring 62, a stationary seal ring O-shaped circle 63, a magnet 64, a rotating seal ring seat 65, a rotating seal ring O-shaped circle 66, and a compensation ring 67, the rotating seal ring 61 is disposed on the rotating seal ring seat 65, the rotating seal ring O-shaped circle 66 is disposed at a lower end of the rotating seal ring seat 65, the stationary seal ring 62 is magnetically connected to the rotating seal ring 61, the magnet 64 is disposed at a lower portion, proximal to the rotating seal ring seat 65, of the stationary seal ring 62, the stationary seal ring O-shaped circle 63 is disposed at an upper end of the stationary seal ring 62, and the compensation ring 67 is disposed between the rotating seal ring seat 65 and the stationary seal ring 62, and is disposed proximal to the rotating seal ring 61.

[0019] In addition, the sealing apparatus 22 is a sealing gasket or a sealing ring.

[0020] The foregoing is only several implementations of the present invention. It should be pointed out that, for those of ordinary skills in the art, several improvements and modifications can be made without departing from the principle of the present invention. These modifications should also be considered as falling into the protection scope of the present invention.