Four-way valve for absorption drying tower

Abstract

The invention discloses a four-way valve for an absorption drying tower. The bonnet of a valve body is provided with a left cylinder and a right cylinder; an air intake chamber, a left tower air intake and exhaust chamber, a right tower air intake and exhaust chamber and a waste gas chamber are formed in the valve body; a sliding valve element is arranged in the air intake chamber; a left valve port is formed between the air intake chamber and the left tower air intake and exhaust chamber; a right valve port is formed between the air intake chamber and the right air intake and exhaust chamber; the side faces of the valve flap of the sliding valve element form seal pairs with the left valve port and the right valve port respectively; the valve flap of the sliding valve element is fixed on a valve rod; and the valve rod is in sliding fit with the central hole in a triangular support in the left valve port and the central hole in a triangular support in the right valve port. In the invention, the sliding valve element is formed by the valve flap and the valve rod, which are vulcanized together, and when the sliding valve element moves, the valve flap and the valve rod move together; and thus, the problem that string gas is easily generated in fit clearance between the valve flap and the valve rod with the valve flap arranged on the valve rod in a sliding manner in the original structure is solved, and internal leakage is avoided. The entire structure of the four-wavy valve is simple, the design is smart and the arrangement is reasonable.

Description

technical field [0001] The invention relates to a component of an adsorption drying tower, in particular to a four-way valve used in the adsorption drying tower. Background technique [0002] The adsorption drying tower combines the advantages of pressure swing adsorption and temperature swing adsorption. It adsorbs (works) at room temperature and high steam partial pressure, and resolves (regenerates) at higher temperature and low steam partial pressure. Moisture, in the regeneration process, is completely removed by the combination of thermal diffusion and low partial pressure of high-quality reproduction (dry air heating). The equipment is generally made in the form of double towers. Under the control of the program controller, the two towers work alternately, one tower absorbs water, and the other tower analyzes and regenerates, and the work continues in a continuous cycle. Due to the lack of valve structure in the prior art, the connection of the intake pipes at the bo...

AI Technical Summary

Problems solved by technology

Due to the lack of valve structure in the prior art, the connection of the intake pipes at the bottom of the two towers is relatively complicated, and at least four valves need to be installed on the pipes to meet the intake and exhaust requirements of the two towers for alternate work. High cost, inconvenient installation and maintenance, complex connection of components and unstable performance

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