High airtight rotary discharger with storing spiral cavity and contact type self-compensating flat surface

Abstract

The invention discloses a high airtight rotary discharger with a storing spiral cavity and a contact type self-compensating flat surface. The high airtight rotary discharger comprises a cylinder shell horizontally arranged and an impeller component arranged in the cylinder shell, wherein two ends of an impeller shaft of the impeller component extend out of a left end cover and a right end cover of the cylinder shell respectively, and are in sealed rotational connection with the left and right end covers through bearings arranged on the left and right end covers; the impeller shaft consists of a power input shaft and a vane mounting shaft which are connected through a cross-linked coupling; a ring groove is axially arranged on the end surface where the vane mounting shaft and the power input shaft are connected, and a pressure spring is mounted in the ring groove; an annular wearable liner plate in tight fit with the vane of the impeller component is fixed on the inner surface of the right end cover; and a feeding barrel and a discharging barrel are communicated with the upper side and lower side of the right end cover. The invention has the advantage that pretty high air locking tightness can be ensured whiling realizing uniform discharge under differential pressure, and the automatic wear compensation can be realized during the discharging process.

Description

technical field [0001] The invention relates to a rotary unloader, in particular to a self-compensating plane contact high-airtight rotary unloader with a spiral cavity for material storage. Background technique [0002] At present, the existing unloaders with pressure difference are mainly impeller-type rotary unloaders; they are composed of a rotating impeller and a housing, etc., and when working, rely on the equally divided trough on the rotating impeller to achieve uniform feeding and unloading during rotation. Its airtightness principle is realized by reducing the radial and axial end face gaps between the rotating impeller and the casing. The requirement for airtightness is that when conveying materials under pressure, the material will not be sprayed due to gas leakage. splash to ensure the normal delivery of materials. In terms of structure, the sealing zone (or sealing area) is the radial and axial contact surface between the rotating impeller blade and the housin...

AI Technical Summary

Problems solved by technology

In terms of structure, the sealing zone (or sealing area) is the radial and axial contact surface between the rotating impeller blade and the housing, so the sealing zone is relatively long, and it is required that all the sealing zones are normally sealed during operation to ensure that the rotary unloader Airtightness, from the principle of airtightness, the longer the sealing tape, the worse the airtightness

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