Multiple sealing carrying roller of belt conveyor

Abstract

The invention discloses a multiple sealing carrying roller of a belt conveyor which is applied to the field of bulk material conveying equipment. The carrying roller comprises combined seals, check rings, bearings, isolating rings, bearing seats, a tube and a shaft, press fitting is conducted on the tube and the shaft by the adoption of the double-end seam-allowance-free cold pressing technology, and the two ends are connected into a whole by the adoption of the welding method; the shaft penetrates through the tube and the bearing seats at the two ends, and the isolating rings and the bearings are installed at the two ends of the shaft; the bearings are fixed to the two ends of the shaft through the check rings; the combined seals pass through the shaft and the bearing seats and are installed into the two ends of the shaft in an interference connection mode; each combined seal is composed of a sealing end cover, a sealing shaft cover, an inner sealing ring and an outer sealing ring, each inner sealing ring is installed inside the corresponding sealing end cover, each sealing shaft cover is installed on the flange parts of the left portions of the corresponding sealing end cover and the inner sealing ring, and each outer sealing ring is installed on at right outer edge of the corresponding inner sealing ring. According to the multiple sealing carrying roller of the belt conveyor, the comprehensive property is high, the machining procedures of the carrying roller are decreased, the axial movement is reduced, the sealing property of the carrying roller is improved, the service life is long, and the energy consumption of the belt conveyor is reduced, the cost is saved, and the operation reliability is enhanced.

Description

technical field [0001] The invention relates to a multi-seal idler roller of a belt conveyor in the field of bulk material conveying equipment. Background technique [0002] At present, the idler roller is a key component of the belt conveyor. It is distributed along the entire length of the conveyor, and its weight accounts for about 30% of the weight of the whole machine. The price accounts for about 20%-30% of the whole machine, and it is used in a large amount. The main direction of the development of idlers is long life, low resistance, high-efficiency sealing, energy saving, etc. The shortcomings of existing idlers are as follows: [0003] (1) The existing idler tube seat processing adopts the tube car stopper, the bearing seat car outer circle, the tube and the bearing seat are assembled and welded together to form the tube seat. This method of processing the tube seat has many processing steps and consumes a lot of energy. Inaccurate positioning, poor coaxiality and...

AI Technical Summary

Problems solved by technology

[0003] (1) The existing idler tube seat processing adopts the tube car stopper, the bearing seat car outer circle, the tube and the bearing seat are assembled and welded together to form the tube seat. This method of processing the tube seat has many processing steps and consumes a lot of energy. Inaccurate positioning, poor coaxiality, etc.

[0004] (2) The existing idler rollers have various sealing forms and poor sealing performance, which cannot meet the sealing requirements of the idler rollers

[0005] (3) The lubricating grease coated inside the existing idler bearings and seals is ordinary No. 2 lithium-based grease, and the use environment of the idler is often water shower, salt spray, dust, hot and humid coal mine underground, port, thermal power plant , water plants, mines and other environments, the use of traditional ordinary No. 2 lithium-based grease basically does not have a waterproof effect. After encountering water, it will mix with water and emulsify and gradually lose it in a short period of time, which will make the idler bearing The No. 2 lithium-based grease on the surface and inside the seal volatilizes, dries up, and loses seriously, which seriously affects the service life of the roller

[0006] (4) The retaining ring of the existing structure idler is installed at the seal. The seal is a plastic part with certain elasticity. Installing the retaining ring here is likely to cause axial movement of the idler due to plastic elasticity and processing and assembly accuracy. Large, the seals are severely worn, and even the seals are melted and deformed at high speed and high temperature.

[0007] (5) The cold stamping bearing seat of the existing structure idler is characterized by high strength and strong rigidity, but the deep drawing depth is large, which may easily cause difficulty in forming the bearing seat, serious drawing defects, poor verticality, heavy weight, and high rejection rate of the bearing seat High disadvantage

[0008] In summary, there are many deficiencies in traditional idlers, which make the processing technology of idlers complicated, poor sealing performance, large axial movement, poor coaxiality, etc., which seriously restrict the development of idlers

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