Titanium spiral conveyor

Abstract

A titanium spiral conveyor solves the problem that an existing spiral conveyor is not suitable for conveying strong-corrosive materials. The titanium spiral conveyor is characterized in that a shaft head shaft is sleeved with a first casing pipe and a second casing pipe, the first casing pipe and the second casing pipe are welded into a whole, a plurality of core bar installing holes corresponding in position are machined in the shaft head shaft and the second casing pipe, and core bars are inserted in the core bar installing holes; gaskets are arranged on the core bars, a titanium surfacing layer is surfaced on the core bars, and the shaft head shaft, the core bars, the first casing pipe, the second casing pipe, the gaskets and the titanium surfacing layer are integrated; and a shell, a spiral shaft support, shaft pipes, a shaft pipe connecting piece, spiral blades, the first casing pipe, the second casing pipe, the gaskets and the titanium surfacing layer of the spiral conveyor are made of titanium materials, and the shaft head shaft and the core bars are made of steel. The titanium spiral conveyor has the beneficial effects that the strength of the spiral shaft is guaranteed, and the corrosion resistance of the spiral shaft is guaranteed as well; the spiral conveyor can meet the requirements for the work condition strength and the corrosion resistance; and the titanium spiral conveyor is simple in structure, safe and stable in running and long in service life.

Description

technical field [0001] The invention belongs to the technical field of screw conveyors, in particular to a titanium screw conveyor capable of transporting highly corrosive materials. Background technique [0002] Screw conveyors are widely used in various industries, such as building materials, chemical industry, electric power, metallurgy, coal, grain and other industries, suitable for horizontal or inclined conveying of powdery, granular and small lump materials, such as ash, slag, cement, coal , grain, etc., the material temperature is less than 200 ℃. The working principle of the screw conveyor is that when the screw shaft rotates, the gravity of the material and the friction generated by the inner wall of the screw conveyor shell make the material move forward along the inner wall of the conveyor shell under the push of the blades. , the situation is as if the non-rotatable nut makes a translational movement along the rotating screw, and the movement of the material in...

AI Technical Summary

Problems solved by technology

The screw conveyors in the prior art are mainly made of carbon steel or stainless steel. Due to the poor corrosion resistance of the material itself, it is not suitable for conveying highly corrosive materials. Titanium has good corrosion resistance and is suitable for conveying highly corrosive materials. materials, but the strength of titanium itself is low, which can meet the requirements of the working conditions for conveying materials, but it cannot meet the strength requirements of the shaft head of the screw conveyor. Therefore, in order to ensure the strength of the shaft head of the screw In order to improve the anti-corrosion performance of the shaft head of the device, it is necessary to invent a shaft head connection structure that can meet both the strength and the anti-corrosion performance of the titanium and steel connection.

However, because titanium and steel will react to form brittle compounds at high temperatures, titanium and steel cannot achieve high-strength welding

Titanium and steel currently have two welding methods to weld them together. One is explosive welding, such as titanium-steel composite steel plate. The shear strength is very low, which cannot meet the working conditions of the shaft head of the screw conveyor. The second is to use one or more transition metals for segmental welding, which can weld titanium and steel together, but the problem is that although There is no area requirement, but the strength of the weld seam is extremely low, and it cannot meet the working condition requirements of the shaft head of the screw conveyor

However, this structure only ensures that the transition leader used has good quality and sufficient strength, and is only suitable for the connection between titanium plates and stainless steel plates, and cannot meet the requirements of the working conditions of the shaft head of the screw conveyor.

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