Suspended type gas locking discharge valve

Abstract

The invention discloses a suspended type gas locking discharge valve. The suspended type gas locking discharge valve adopts a double-shell structure and comprises an outer shell, an inner shell, an impeller, a bearing block, a rotating shaft, a transmission assembly, end covers, gas guiding ports, a blocking prevention structure and a sealing element, wherein the outer shell and the inner shell are sheathed with each other coaxially, a material inlet arranged at the upper end of the cylinder wall of the outer shell is connected with a hopper, and the material inlet is provided with the blocking prevention structure; a discharge valve outlet arranged below the inner shell extends to the outside of the outer shell; the inner shell is axially fixed on the outer shell by an arc-shaped support pad and the end covers; the impeller with a side baffle plate is arranged in the inner shell, the rotating shaft of the impeller is fixed by the bearing block, and the impeller is driven to rotate by the transmission assembly; the gas guiding ports are arranged on the outer shell and the inner shell; the inner shell and the outer shell are sealed by the end covers, and the rotating shaft of the impeller passes through the end covers; and the sealing element is arranged between members. The discharge valve is light weight, good in bearing performance and strong in gas tightness, the gas in the inner shell can be prevented from leaking, the gas transmission capability is improved, the work energy consumption in a gas transmission system is reduced, material blockage is prevented, and the material loading quantity is large, the maintenance is convenient and the service life is long.

Description

technical field

[0001] The invention relates to a discharge valve for quantitative feeding of a pneumatic conveying system for solid materials, in particular to a suspended air-lock discharge valve with a sealed inner shell. Background technique

[0002] At present, the quantitative unloading of solid materials in the pneumatic conveying system usually uses a rotary unloading device. The suspended inner shell of a typical rotary discharge valve is mainly made of metal casting or steel (plate) material, and has only one shell. The unloading valve using the metal casting shell has a heavy load, but due to its heavy weight, it is difficult to transport, install and maintain. The unloading valve with a plate shell can only be used in the conveying system of light materials such as grain and plastic. If it is used for unloading solid particle materials with a large specific gravity, the shell is easily deformed, resulting in a gap between the impeller and the impeller. Uniformi...

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