Sealing structure for rotating shaft end of screw conveyer

Abstract

The utility model discloses a screw conveyer rotating shaft end sealing structure which comprises a mandrel and a rotating shaft arranged at the output end of a screw conveyer, the mandrel is in transmission connection with the rotating shaft, a cover sleeve is fixedly arranged at the end, facing the rotating shaft, of the mandrel, and one side of the cover sleeve extends towards the rotating shaft to be provided with a sealing part. A sealing piece is arranged between the sealing part and the rotating shaft, a gasket is arranged on the side, facing the rotating shaft, of the sealing piece, and a fixing piece is arranged on the side, facing the rotating shaft, of the gasket. The sealing structure is additionally arranged between the mandrel and the rotating shaft, so that the effect that materials cannot be in direct contact with the shaft end seal is achieved while it is guaranteed that rotation of the mandrel is not affected, and ash leakage of the shaft end seal can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of screw conveyors, and in particular to a sealing structure for the rotating shaft end of a screw conveyor. Background Technology

[0002] A screw conveyor is a machine that uses a motor to drive a screw to rotate, thus pushing materials to achieve the purpose of conveying. It can convey horizontally, inclined, or vertically, and has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and convenient closed transportation.

[0003] When conveying dry powdery materials, screw conveyors rely on the reverse propulsion of the spindle blades to achieve material conveying. Due to long-term accumulation of material at the feed end rotating shaft position, the shaft end seal of the feed end rotating shaft is prone to failure due to misalignment of the spindle and material compression, resulting in dust leakage. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for the rotating shaft end of a screw conveyor to solve the above-mentioned problems.

[0005] According to one aspect of the present invention, a sealing structure for the rotating shaft end of a screw conveyor is provided, comprising: a mandrel and a rotating shaft disposed on the output end of the screw conveyor, the mandrel being drively connected to the rotating shaft, a cover being fixedly provided at one end of the mandrel facing the rotating shaft, a sealing portion extending from one side of the cover towards the rotating shaft, a sealing element being disposed between the sealing portion and the rotating shaft, a gasket being disposed on the side of the sealing element facing the rotating shaft, and a fixing element being disposed on the side of the gasket facing the rotating shaft.

[0006] In some embodiments, the rotating shaft is provided with a spline, the spindle is provided with a spline sleeve that mates with the spline, and the cover sleeve is provided at the end of the spline sleeve.

[0007] In some embodiments, the cover is welded to the end of the spline sleeve.

[0008] In some embodiments, the cross-section of the sealing portion is circular.

[0009] In some embodiments, the seal includes a plurality of first felt rings fitted between the sealing portion and the rotating shaft, and a second felt ring fitted between the mandrel and the rotating shaft.

[0010] In some embodiments, three of the first felt rings are fitted between the sealing part and the rotating shaft.

[0011] In some embodiments, the gasket is an annular structure that matches the first felt ring.

[0012] In some embodiments, the fastener is a snap ring that matches the washer.

[0013] Compared with the prior art, the beneficial effects of this application are as follows:

[0014] This application adds a sealing structure between the mandrel and the rotating shaft, which not only ensures that the rotation of the mandrel is not affected, but also achieves the effect of preventing materials from directly contacting the shaft end seal, effectively preventing dust leakage from the shaft end seal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the rotating shaft of this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the mandrel of this utility model;

[0018] Figure 4 for Figure 3 A magnified view of A in the middle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] refer to Figures 1 to 4 This application provides a sealing structure for the rotating shaft end of a screw conveyor, including: a mandrel 1 and a rotating shaft 2 disposed on the output end of the screw conveyor. The mandrel 1 and the rotating shaft 2 are connected in a transmission manner. A cover is fixedly provided at one end of the mandrel 1 facing the rotating shaft 2. A sealing part 3 is provided on one side of the cover facing the rotating shaft 2. A sealing element is provided between the sealing part 3 and the rotating shaft 2. A gasket 4 is provided on the side of the sealing element facing the rotating shaft 2. A fixing element 5 is provided on the side of the gasket 4 facing the rotating shaft 2.

[0021] In some embodiments, the rotating shaft 2 is provided with a spline 6, the spindle 1 is provided with a spline sleeve 7 that mates with the spline 6, and a cover sleeve is provided at the end of the spline sleeve 7.

[0022] In some embodiments, the cover is welded to the end of the spline sleeve 7.

[0023] In some embodiments, the sealing part 3 has a circular cross-section.

[0024] In some embodiments, the seal includes a plurality of first felt rings 8 sleeved between the sealing part 3 and the rotating shaft 2, and a second felt ring 9 sleeved between the mandrel 1 and the rotating shaft 2.

[0025] In some embodiments, three first felt rings 8 are fitted between the sealing part 3 and the rotating shaft 2.

[0026] In some embodiments, the gasket 4 is an annular structure that matches the first felt ring 8.

[0027] In some embodiments, the retainer 5 is a snap ring with a hole, which is matched with the washer 4.

[0028] In this application, after welding the sealing part 3 to the end of the mandrel 1, the second felt ring 9, the first felt ring 8, the gasket 4 and the hole retaining spring are inserted in sequence. The mandrel 1 is fixed to the rotating shaft 2 by the cooperation of the spline 6 and the spline sleeve 7. The sealing element seals the connection end between the mandrel 1 and the rotating shaft 2 under the fixing action of the fixing element 5.

[0029] This application adds a sealing structure between the mandrel 1 and the rotating shaft 2, which not only ensures that the rotation of the mandrel 1 is not affected, but also achieves the effect that the material cannot directly contact the shaft end seal, effectively preventing dust leakage from the shaft end seal.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing structure for the rotating shaft end of a screw conveyor, characterized in that, include: The mandrel and the rotating shaft are mounted on the output end of the screw conveyor. The mandrel and the rotating shaft are connected in a driving connection. A cover is fixedly provided at one end of the mandrel facing the rotating shaft. A sealing part is provided on one side of the cover extending towards the rotating shaft. A sealing element is provided between the sealing part and the rotating shaft. A gasket is provided on the side of the sealing element facing the rotating shaft. A fixing element is provided on the side of the gasket facing the rotating shaft.

2. The screw conveyor rotating shaft end sealing structure according to claim 1, characterized in that, The rotating shaft is provided with a spline, the spindle is provided with a spline sleeve that mates with the spline, and the cover sleeve is provided at the end of the spline sleeve.

3. The screw conveyor rotating shaft end sealing structure according to claim 2, characterized in that, The cover is welded to the end of the spline sleeve.

4. The screw conveyor rotating shaft end sealing structure according to claim 1, characterized in that, The sealing part has a circular cross-section.

5. The screw conveyor rotating shaft end sealing structure according to claim 1, characterized in that, The sealing element includes a plurality of first felt rings sleeved between the sealing part and the rotating shaft, and a second felt ring sleeved between the mandrel and the rotating shaft.

6. The screw conveyor rotating shaft end sealing structure according to claim 5, characterized in that, Three of the first felt rings are fitted between the sealing part and the rotating shaft.

7. The screw conveyor rotating shaft end sealing structure according to claim 5, characterized in that, The gasket is a ring structure that matches the first felt ring.

8. The screw conveyor rotating shaft end sealing structure according to claim 1, characterized in that, The fastener is a retaining ring for holes, which is matched with the gasket.

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