Pipeline irrigation pressure adjustable and slowly opening and closing type automatic drainage valve

Abstract

The invention relates to a pipeline irrigation pressure adjustable and slowly opening and closing type automatic drainage valve which is characterized in that a valve body (8) is connected with a valve body connector (1), connector drainage holes (17) are formed between connector supporting ribs (5) in the valve body connector (1), valve body drainage holes (20) are formed between valve supporting ribs (19) at the rear end of the valve body (8), a sliding shaft (2) is mounted in a connector shaft hole (18) and a valve body shaft hole (21) in a penetrating mode, a spring pressing plate (23) is fixed at one end of a lead screw (10), a drainage pressure adjusting handle (9) is arranged at the other end of the lead screw (10), a spring fixing plate (12) is fixed on the sliding shaft (2), a spring (11) is arranged between the spring fixing plate (12) and the spring pressing plate (23), an arc-shaped leaking water groove (7) is formed in the front end of the valve body (8), and a waterstop rubber ring (13) and the sliding shaft (2) can slide freely in the valve body (8) under the adjustment of the drainage pressure adjusting handle (9).

Description

Technical field [0001] The invention relates to the technical field of agricultural irrigation equipment, in particular to a pipeline irrigation pressure adjustable slow opening and closing automatic drain valve. Background technique [0002] With the continuous development of pipeline water delivery irrigation technology, especially the wide application of plastic water delivery pipelines, the requirements for its supporting connectors are getting higher and higher. Buried water pipelines in the ground can provide protection and convenience for the pipelines. However, because water pipelines are used in cold areas, the problem of anti-freeze cracking is very prominent. In order to avoid pipeline freezing and cracking accidents, it is usually at the end of the pipeline or in low-lying places. Set up a drain valve and a large drain well, and open the drain valve in winter to drain the water in the pipeline. However, due to the limitation of the structure of the drain valve and the...

AI Technical Summary

Problems solved by technology

Burying the water pipeline underground can provide protection and convenience for the pipeline. However, since the water pipeline is used in cold regions, the problem of anti-freezing and cracking of the pipeline is very serious. Set up drain valves and large drain wells, and open the drain valves in winter to discharge the water in the pipes. However, due to the structure of the drain valves and the limitation of management level, the water in the pipes is often discharged uncleanly and accumulates, which brings great harm to the use of the pipe network. inconvenient

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