CN218644808U

CN218644808U - Container with static seal rotating shaft

Info

Publication number: CN218644808U
Application number: CN202123371691.0U
Authority: CN
Inventors: 吴鹏; 方静辉; 施健行
Original assignee: Zhefu Holding Group Co ltd
Current assignee: Zhefu Holding Group Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2023-03-17
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a container with a static seal rotating shaft, which is characterized by comprising an external container, wherein an inner cylinder for stirring is arranged in the external container in a rotating way, a first shaft is arranged on the external container in a rotating way, a second shaft for driving is arranged at the outer end of the first shaft in a matching way, and the first shaft and the second shaft are coaxially arranged; the end parts of the first shaft and the second shaft are respectively provided with a plurality of magnetic poles which are alternately arranged in opposite polarities along the circumferential direction; the magnetic poles on the first shaft and the second shaft are matched with each other, a sealing sleeve is arranged between the first shaft and the second shaft and used for sealing and wrapping the end part of the first shaft, the sealing sleeve is made of a non-magnetic material, and a transmission assembly is arranged between the inner cylinder and the first shaft. The utility model discloses a benefit is that the static seal of pivot fixed knot constructs on realizing the container through the seal cover to the magnetic force fit transmission moment of torsion through the diaxon, sealed effect is reliable.

Description

Container with static seal rotating shaft

Technical Field

The application relates to the technical field of mechanical sealing, in particular to a container with a static sealing rotating shaft.

Background

When the motor is arranged on the container, for the container with sealing requirement, a dynamic seal is required to be arranged between the rotating shaft of the motor and the container wall. Common dynamic sealing forms include packing seal, oil seal, labyrinth seal and the like. For example, chinese patent document CN2021211428723 discloses a utility model patent named as a sealing structure of a stirrer shaft end, and the sealing manner disclosed in this application is to arrange multiple layers of sealing rings at the shaft end to complete the shaft end sealing, but the sealing materials such as packing sealing and oil sealing of this type are all in direct contact with the rotating component, and wear and leakage risk must be avoided during long-term operation; although the labyrinth seal does not depend on sealing materials, the labyrinth structure of the labyrinth seal has certain gaps, and the deformation of the gaps can cause the jamming of relatively moving parts under the working conditions of high temperature and high pressure.

For another example, in chinese patent document, patent No. CN2009200965409, which is issued on 1/27/2010, discloses a rotary shaft rotary sealing device, in which a telescopic diaphragm sleeve is fixed in an inner cavity of a housing, a static permanent magnet retaining sleeve provided with a static permanent magnet strip group is fixed on the housing through the telescopic diaphragm sleeve, a moving permanent magnet retaining sleeve provided with a moving permanent magnet strip group is fixed on a rotary shaft, one end of the rotary shaft passes through the telescopic diaphragm sleeve and is sleeved in the housing, the static permanent magnet retaining sleeve and the moving permanent magnet retaining sleeve are in involution and sliding contact, the other end of the rotary shaft is installed in a bearing fixed on the housing, the permanent magnet strip magnetic poles of the static permanent magnet strip group and the permanent magnet strip magnetic poles of the moving permanent magnet strip group are arranged according to magnetic anisotropy, and a vacant space of the permanent magnet strip is left in the moving permanent magnet retaining sleeve along the outermost side in the radial direction.

This application passes through the magnetic stripe and accomplishes the dynamic link of diaphragm cover, keeps sealed when low-speed rotation, and the magnetic force seals when high-speed rotation destroys, and then protection seal structure. The sealing structure of the application has the disadvantages that the sealing structure is a structure which is easy to damage, and therefore, the sealing performance is not reliable enough.

Disclosure of Invention

Based on the above-mentioned not enough among the prior art, the utility model provides a container with quiet sealed pivot realizes the quiet seal of pivot fixed knot structure on the container through the seal cover to through the magnetic force cooperation transmission moment of torsion of diaxon, sealed effect is reliable.

In order to achieve the above object, the present invention adopts the following technical solutions.

A container with a static seal rotating shaft is characterized by comprising an external container, wherein an inner cylinder for stirring is rotationally arranged in the external container, a first shaft is rotationally arranged on the external container, a second shaft for driving is arranged at the outer end of the first shaft in a matched manner, and the first shaft and the second shaft are coaxially arranged; the end parts of the first shaft and the second shaft are respectively provided with a plurality of magnetic poles which are alternately arranged in opposite polarities along the circumferential direction; the magnetic poles on the first shaft and the magnetic poles on the second shaft are matched with each other, a sealing sleeve is arranged between the first shaft and the second shaft, the sealing sleeve is used for sealing and coating the end part of the first shaft, the sealing sleeve is made of non-magnetic materials, and a transmission assembly is arranged between the inner cylinder and the first shaft. The magnetic poles of the first shaft and the second shaft are matched to form non-contact transmission, the sealing sleeve can be completely and rigidly fixed and seal the end part of the first shaft or the second shaft, and the dynamic seal is converted into a fixed structural seal, so that the sealing effect of the rotating shaft on the container cannot be damaged due to the rotation of the rotating shaft, and the sealing reliability is very high; the magnetic poles can be positioned on the end faces of the first shaft and the second shaft for transmission, and also can be positioned on the side faces of opposite ends of the first shaft and the second shaft, so that transmission force can be provided, and the magnetic pole type motor is diversified in arrangement form and convenient to arrange.

Preferably, the end part of the first shaft is a convex part, and a magnetic pole is arranged outside the convex part; the end of the second shaft is a concave part, and a magnetic pole is arranged inside the concave part. Through the cooperation of convex part and concave part, make things convenient for the stable setting of magnetic pole, improve the stability of primary shaft and secondary shaft magnetic pole transmission.

Preferably, the second shaft is a motor output shaft, the outer container is provided with a mounting through hole, the first shaft is connected with the mounting through hole through a bearing, the sealing sleeve is fixedly connected with the outer container in a sealing mode, and the end portion of the first shaft is wrapped by the sealing sleeve. The sealing sleeve is fixedly connected with the outer container, and the first shaft can be arranged on the side wall or the top cover of the outer container, so that the first shaft can be completely sealed, and a reliable sealing effect is achieved.

Preferably, the male portion is removably coupled to the first shaft and the female portion is removably coupled to the second shaft. The convex part and the concave part can be disassembled for maintenance and replaced corresponding to different specifications.

Preferably, the side surface of the convex part for mounting the magnetic pole is a cylindrical surface; the side surface of the concave part for installing the magnetic pole is a cylindrical surface. The magnetic poles are oppositely arranged on the cylindrical surfaces of the convex part and the concave part, so that axial force cannot be generated, and the stability of magnetic pole transmission is ensured.

Preferably, the magnetic poles are magnetic terminals with strip-shaped structures, and the magnetic poles are parallel to the axis of the first shaft or the second shaft. The magnetic force is ensured to be stable.

Preferably, the sealing sleeve is made of polyether-ether-ketone plastic or stainless steel or titanium alloy.

Preferably, the magnetic pole is made of AlNiCo or Rb-Fe-B magnetic material.

The utility model discloses following beneficial effect has: the utility model provides a first axle is the pivot in the external container, and first axle and second axle form contactless transmission through the magnetic pole cooperation, and the seal cover can be fixed and seal the tip of first axle rigidly totally, and it is sealed to have changed the structure of fixed form into the movive seal, has very high sealing reliability.

Drawings

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

Fig. 2 is a partially enlarged schematic view of the present invention.

In the figure: the convex part 11 of the first shaft 1, the concave part 21 of the second shaft 2, the magnetic pole 3, the sealing sleeve 4, the outer container 5, the bearing 6, the inner cylinder 7 and the bevel gear pair 8 are provided with through holes 9.

Detailed Description

The invention is further illustrated with reference to the accompanying drawings and specific embodiments.

Examples

As shown in fig. 1 to 2, a container with a static seal rotating shaft comprises an outer container 5, an inner cylinder 7 for stirring is rotatably arranged in the outer container 5, a first shaft 1 is rotatably arranged on the outer container 5, and a second shaft 2 for driving is arranged at the outer end of the first shaft 1 in a matching way; in the present embodiment, the second shaft 2 is a motor output shaft. The end parts of the first shaft 1 and the second shaft 2 are respectively provided with a plurality of magnetic poles 3 which are alternately arranged in opposite polarities along the circumferential direction; the magnetic poles 3 are magnetic terminals with strip structures, and the magnetic poles 3 are parallel to the axis of the first shaft 1 or the second shaft 2. The magnetic pole 3 on the first shaft 1 and the magnetic pole 3 on the second shaft 2 are matched with each other, a sealing sleeve 4 is arranged between the first shaft 1 and the second shaft 2, the sealing sleeve 4 is used for sealing and coating the end part of the first shaft 1 or the second shaft 2, and the sealing sleeve 4 is made of a non-magnetic material. The sealing sleeve 4 is made of titanium alloy. As shown in fig. 1, the sealing sleeve 4 covers the outer side of the convex part 11 of the first shaft 1, and the magnetic pole 3 is made of a rubidium-iron-boron magnetic material so as to meet the reliability of the material at high temperature. The end part of the first shaft 1 is a convex part 11, and the outer side of the convex part 11 is provided with a magnetic pole 3; the end of the second shaft 2 is a concave part 21, a cylindrical blind hole matched with the convex part 11 is arranged in the concave part 21, and the convex part 11 is inserted into the cylindrical blind hole of the concave part 21 for matching. The inside of the recess 21 is provided with a magnetic pole 3. The side surface of the projection 11 for mounting the magnetic pole 3 is a cylindrical surface. The side of the recess 21 for mounting the magnetic pole 3 is a cylindrical surface. The convex portion 11 and the first shaft 1 are detachably connected by a screw, and the concave portion 21 and the second shaft 2 are detachably connected by a screw. The first shaft 1 is installed on the wall surface of the outer container 5, the wall surface of the outer container 5 is provided with an installation through hole 9, the first shaft 1 is connected with the installation through hole 9 through a bearing 6, the sealing sleeve 4 is fixedly connected with the wall surface of the outer container 5, and the sealing sleeve 4 covers the end part of the first shaft 1. An inner cylinder 7 is rotatably arranged in the outer container 5, a transmission component is arranged between the inner cylinder 7 and the first shaft 1, and the transmission component in the figure 1 adopts a bevel gear pair, namely, the wall surface of the inner cylinder 7 and the inner end of the first shaft 1 are transmitted through a bevel gear pair 8. The second shaft 2 is used as the output power of the motor output shaft, the transmission is realized through the magnetic poles 3 matched on the first shaft 1 and the second shaft 2, the first shaft 1 rotates to drive the inner cylinder 7 to rotate, and therefore the stirring of the fluid in the inner cylinder 7 is completed.

According to the magnetic transmission device, the magnetic poles 3 of the first shaft 1 and the second shaft 2 are matched to form non-contact transmission, the magnetic poles 3 are oppositely arranged on the cylindrical surfaces of the convex part 11 and the concave part 21, no axial force is generated, and the transmission stability of the magnetic poles 3 is ensured; the sealing sleeve 4 can be completely rigidly fixed and seal the end of the first shaft 1 or the second shaft 2, and converts the dynamic seal into a fixed structural seal, thereby having very high sealing reliability.

Claims

1. A container with a static seal rotating shaft is characterized by comprising an external container, wherein an inner cylinder for stirring is rotatably arranged in the external container, a first shaft is rotatably arranged on the external container, a second shaft for driving is arranged at the outer end of the first shaft in a matched manner, and the first shaft and the second shaft are coaxially arranged; the end parts of the first shaft and the second shaft are respectively provided with a plurality of magnetic poles which are alternately arranged in different polarities along the circumferential direction; the magnetic poles on the first shaft and the magnetic poles on the second shaft are matched with each other, a sealing sleeve is arranged between the first shaft and the second shaft, the sealing sleeve is used for sealing and coating the end part of the first shaft, the sealing sleeve is made of non-magnetic materials, and a transmission assembly is arranged between the inner cylinder and the first shaft.

2. The container with the static seal rotating shaft as claimed in claim 1, wherein the end part of the first shaft is a convex part, and a magnetic pole is arranged on the outer side of the convex part; the end of the second shaft is a concave part, and a magnetic pole is arranged inside the concave part.

3. The container with the static seal rotating shaft as claimed in claim 1 or 2, wherein the second shaft is a motor output shaft, the outer container is provided with a mounting through hole, the first shaft and the mounting through hole are connected through a bearing, the sealing sleeve is fixedly connected with the outer container in a sealing manner, and the sealing sleeve covers the end part of the first shaft.

4. A container with a static seal rotor as claimed in claim 2, wherein said male portion is removably connected to said first shaft and said female portion is removably connected to said second shaft.

5. A container with a static seal rotating shaft as claimed in claim 2 or 4, wherein the side of the convex part for installing the magnetic pole is a cylindrical surface; the side surface of the concave part for installing the magnetic pole is a cylindrical surface.

6. The container with the static seal rotating shaft as claimed in claim 5, wherein the magnetic poles are magnetic terminals with strip-shaped structures, and the magnetic poles are parallel to the axis of the first shaft or the second shaft.

7. The container with the static sealing rotating shaft as claimed in claim 1, wherein the sealing sleeve is made of polyether ether ketone plastic or stainless steel or titanium alloy.

8. The container with the static seal rotating shaft as claimed in claim 1, wherein the magnetic poles are made of alnico or rubidium iron boron magnetic materials.