Shaft end sealing device for vibrating mixer

Abstract

The utility model belongs to the technical field of shaft end sealing, and particularly relates to a shaft end sealing device for a vibrating stirrer, which comprises a stirring shaft, a rotating ring hub is arranged outside the stirring shaft, a fixed ring hub is arranged outside the rotating ring hub, a floating oil seal is arranged between the rotating ring hub and the fixed ring hub, and the rotating ring hub, the fixed ring hub and the floating oil seal are all arranged in a sealing cavity. A fixing ring is arranged at one end of the rotating ring hub, the fixing ring and the stirring shaft are matched and fixed through a square machining face, the stirring shaft and the rotating ring hub are fixed through the fixing ring, a first pressing plate is arranged at one end of the fixed ring hub and tightly presses the fixed ring hub to be used for axially fixing the fixed ring hub, and the fixed ring hub and the sealing cavity are fixed through a set screw. The rotating ring hub, the fixed ring hub and the floating oil seal form a sealing structure; the rotating ring hub, the fixed ring hub and the floating oil seal form a sealing structure, and sealing surfaces between the floating oil seal at one end of the rotating ring hub and the floating oil seal at one end of the fixed ring hub can be sealed under the conditions of relative rotation and radial movement.

Description

Technical Field

[0001] The utility model belongs to the technical field of shaft end sealing, and in particular relates to a shaft end sealing device for a vibration mixer. Background Art

[0002] A mixer is a machine that mixes materials such as solid particles, solid powders and liquid materials into a uniform mixture. A vibrating mixer is a mixer that uses a mixing method that combines stirring and vibration. The exciter makes the stirring shaft vibrate while the stirring shaft rotates. The stirring shaft is constantly vibrating in the radial direction. To ensure that the stirred material does not leak, a shaft end sealing device is provided between the stirring shaft and the mixing cylinder. The shaft end sealing device of the mixer needs to ensure that the radial runout of the stirring shaft is very small to ensure the sealing effect. The stirring shaft of the vibrating mixer is constantly vibrating in the radial direction, so the life of the shaft end sealing device of the vibrating mixer is extremely short.

[0003] Therefore, a shaft end sealing device for a vibrating mixer is needed. Utility Model Content

[0004] The utility model aims to provide a shaft end sealing device for a vibrating mixer.

[0005] The utility model solves the technical problem by adopting the following technical scheme: a shaft end sealing device for a vibration mixer comprises a stirring shaft, a rotating hub is arranged outside the stirring shaft, a fixed hub is arranged outside the rotating hub, a floating oil seal is arranged between the rotating hub and the fixed hub, the rotating hub, the fixed hub and the floating oil seal are all arranged in a sealing cavity, a fixing ring is arranged at one end of the rotating hub, the fixing ring and the stirring shaft are fixed by matching with a square machined surface, the stirring shaft and the rotating hub are fixed by the fixing ring, a pressure plate 1 is arranged at one end of the fixed hub, the pressure plate 1 presses the fixed hub for axial fixation of the fixed hub, the fixed hub and the sealing cavity are fixed by a set screw, so that the rotating hub, the fixed hub and the floating oil seal form a sealing structure.

[0006] Specifically, one end of the rotating hub and the fixed hub both have conical surfaces, a sealing ring 2 is provided at the conical surface of the rotating hub, and the sealing ring 2 is pressed against the conical surface of the rotating hub by a pressing plate 2, and a sealing ring 1 is provided at the conical surface of the fixed hub, and the sealing ring 1 is pressed against the conical surface of the fixed hub by a pressing plate 1.

[0007] Specifically, lining plates are provided on the outer sides of the sealing ring 2 and the pressure plate 1 to prevent the pressure plate 1 and the sealing ring 1 from being worn.

[0008] Specifically, an oil passage 1 is arranged on the outside of the sealing cavity so that the grease can enter the mixer through the sealing ring 2, and a sealing ring 1 is arranged on the other side of the oil passage 1 to prevent the grease from leaking.

[0009] Specifically, an oil passage 2 is arranged outside the sealing cavity, and an "O"-shaped sealing ring is arranged on one side of the oil passage 2.

[0010] Specifically, the sealing chamber is fixed to the flange of the mixing cylinder by bolts, and the fixing ring and the rotating hub are fixed by bolts.

[0011] Specifically, the sealing ring 1 and the sealing ring 2 are highly elastic sealing rings.

[0012] The utility model has the following beneficial effects: the utility model enables the swivel hub, the fixed hub and the floating oil seal to form a sealing structure; the sealing surface between the swivel hub and the floating oil seal at one end of the fixed hub can achieve sealing under the conditions of relative rotation and radial movement; the sealing effect can also be ensured between the hub cone surface, the fixed hub cone surface and the sealing ring under the conditions of relative rotation and radial movement; the arrangement of multiple shaft end seals greatly reduces the probability of slurry leakage, thereby significantly extending the service life of the shaft end of the mixer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a partial left view of the utility model.

[0015] In the figure: 1-end plate of agitator cylinder; 2-flange of agitator cylinder; 3-liner; 4-fixed ring; 5-agitation shaft; 6-swivel hub; 7-fixed hub; 8-sealing chamber; 9-sealing ring; 10-floating oil seal; 11-sealing ring 1; 12-pressure plate 1; 13-sealing ring 2; 14-pressure plate 2; 15-setting screw; 16-"O" type sealing ring; 17-oil passage 1; 18-oil passage 2. DETAILED DESCRIPTION

[0016] The utility model will now be described in further detail with reference to the accompanying drawings.

[0017] like Figure 1-2 A shaft end sealing device for a vibration mixer comprises a mixing cylinder end plate 1, a mixing cylinder flange 2, a lining plate 3, a fixing ring 4, a mixing shaft 5, a rotating ring hub 6, a fixed ring hub 7, a sealing chamber 8, a sealing ring 9, a floating oil seal 10, a sealing ring 11, a pressure plate 1 12, a sealing ring 2 13, a pressure plate 2 14, a set screw 15, an "O" type sealing ring 16, an oil passage 1 17, and an oil passage 2 18.

[0018] The swivel hub 6 is arranged outside the stirring shaft 5, and the fixed ring hub 7 is arranged outside the swivel hub 6. The floating oil seal 10 is arranged between the swivel hub 6 and the fixed ring hub 7. The swivel hub 6, the fixed ring hub 7, and the floating oil seal 10 are all arranged in the sealing chamber 8. The sealing chamber 8 is fixed to the flange 2 of the stirring cylinder by bolts. A fixing ring 4 is provided at one end of the swivel hub 6. The fixing ring 4 and the swivel hub 6 are fixed by bolts. The fixing ring 4 and the stirring shaft 5 are fixed by matching with the square processing surface. The fixing ring 4 fixes the stirring shaft 5 and the swivel hub 6 together. A pressure plate 12 is provided at one end of the fixed ring hub 7. The pressure plate 12 presses the fixed ring hub 7 for axial fixation of the fixed ring hub 7. The sealing chamber 8 and the fixed ring hub 7 are fixed together by set screws to ensure radial fixation of the fixed ring hub 7, and the axial relative position of the swivel hub 6 and the fixed ring hub 7 is fixedly limited, so that the swivel hub 6, the fixed ring hub 7, and the floating oil seal 10 form a sealing structure. The sealing surfaces between the floating oil seal 10 can be sealed under relative rotation and radial movement.

[0019] One end of the swivel hub 6 and the fixed ring hub 7 are both conical surfaces, and a sealing ring 2 13 is provided at the conical surface of the swivel hub 6, and a pressure plate 2 14 presses the sealing ring 2 13 onto the conical surface of the swivel hub 6. A sealing ring 11 is provided at the conical surface of the fixed ring hub 7, and a pressure plate 12 presses the sealing ring 13 onto the conical surface of the fixed ring hub 7. The sealing ring 11 and the sealing ring 2 13 have the characteristics of high elasticity, and the sealing effect can be guaranteed between the conical surfaces of the swivel hub 6 and the fixed ring hub 7 in the case of relative rotation and radial movement.

[0020] The end face sealing ring 2 13 of the rotating hub 6 and the outer side of the pressing plate 12 are provided with a lining plate 3 to prevent the material from contacting with the pressing plate 12 and the sealing ring 11 when the mixer is mixing the material, and to prevent the pressing plate 12 and the sealing ring 11 from being worn.

[0021] An oil passage 17 is provided on the outside of the sealing chamber 8, and the oil passage 17 is filled with high-pressure grease. The grease continuously enters the mixer through the sealing ring 13. When the swivel hub 6 rotates and radially vibrates, the gap between the sealing ring 13 and the swivel hub 6 is filled with grease to ensure that the mixture in the mixing tank will not leak. A sealing ring 11 is provided on the other side of the oil passage 17 to further ensure that the grease will not leak.

[0022] An oil passage 18 is provided outside the sealing chamber 8. The oil passage 18 is used to add grease to the sealing surface of the floating oil seal 10 to reduce the wear of the sealing surface between the floating oil seals 10 during relative rotation and radial vibration. An "O"-ring 16 is provided on one side of the oil passage 18 to prevent grease leakage.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft end sealing device for a vibrating mixer, characterized in that: It includes a stirring shaft, a rotating hub is arranged outside the stirring shaft, a fixed hub is arranged outside the rotating hub, a floating oil seal is arranged between the rotating hub and the fixed hub, the rotating hub, the fixed hub and the floating oil seal are all arranged in a sealing cavity, a fixing ring is arranged at one end of the rotating hub, the fixing ring and the stirring shaft are fixed by matching with a square machined surface, the stirring shaft and the rotating hub are fixed by the fixing ring, a pressure plate 1 is arranged at one end of the fixed hub, the pressure plate 1 presses the fixed hub for axial fixation of the fixed hub, the fixed hub and the sealing cavity are fixed by a set screw, so that the rotating hub, the fixed hub and the floating oil seal form a sealing structure.

2. A shaft end sealing device for a vibrating mixer according to claim 1, characterized in that: The rotating hub and the fixed hub both have conical surfaces at one end, and a sealing ring 2 is arranged at the conical surface of the rotating hub, and the sealing ring 2 is pressed against the conical surface of the rotating hub by a pressure plate 2; a sealing ring 1 is arranged at the conical surface of the fixed hub, and the sealing ring 1 is pressed against the conical surface of the fixed hub by a pressure plate 1.

3. A shaft end sealing device for a vibrating mixer according to claim 2, characterized in that: A lining plate is arranged on the outer side of the sealing ring 2 and the pressure plate 1 to prevent the pressure plate 1 and the sealing ring 1 from being worn.

4. The shaft end sealing device for a vibrating mixer according to claim 1, characterized in that: An oil passage 1 is arranged outside the sealing cavity to allow the grease to enter the mixer through the sealing ring 2, and a sealing ring 1 is arranged on the other side of the oil passage 1 to prevent the grease from leaking.

5. The shaft end sealing device for a vibrating mixer according to claim 1, characterized in that: An oil passage 2 is arranged outside the sealing cavity, and an "O" type sealing ring is arranged on one side of the oil passage 2.

6. The shaft end sealing device for a vibrating mixer according to claim 1, characterized in that: The sealing chamber is fixed to the flange of the mixing cylinder by bolts, and the fixing ring and the rotating hub are fixed by bolts.

7. The shaft end sealing device for a vibrating mixer according to claim 2, characterized in that: The sealing ring 1 and the sealing ring 2 are sealing rings with high elasticity.

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