Buoyancy valve, water washing system and construction machinery

Abstract

The present invention proposes a buoyancy valve, which includes a valve body; a valve chamber and a buoyancy chamber are arranged in the valve body; a valve core is arranged in the valve chamber, a float is arranged in the buoyancy chamber, and the float and the valve The mandrel of the core is connected; the valve body is provided with a first port, a second port, a third port and a fourth port; the first port and the second port communicate with the valve chamber, so The third port and the fourth port communicate with the buoyancy chamber; the float has an initial state and a floating state, and when the float is in the initial state, the buoyancy valve connects the first port and the second port disconnected, when the buoy is in the floating state, the buoyancy valve communicates the first port with the second port. The buoyancy valve can be used to easily identify when the emptying operation is completed, thereby effectively ensuring the emptying effect, which is beneficial to improving the service life and user experience of the water washing system. In addition, the present invention also proposes a water washing system and construction machinery with the buoyancy valve.

Description

technical field [0001] The invention relates to construction machinery, in particular to a buoyancy valve; in addition, it also relates to a water washing system and construction machinery with the buoyancy valve. Background technique [0002] At present, construction machinery has been widely used in various construction operations, which brings great convenience to engineering construction. Many construction machinery (such as concrete pumping equipment, mixer trucks, etc.) often need to be cleaned locally after the operation is completed. For this reason, these construction machinery are usually equipped with a water washing system. [0003] In order to prevent the adverse effects of accumulated water on the water washing system, such as causing rust or freezing in cold environments and damaging the water pump, etc., it is usually necessary to empty the water after the washing operation is completed. The existing evacuation method is mainly manual air pressure evacuation...

AI Technical Summary

Problems solved by technology

In the actual application process, the existing water washing system cannot determine whether there is still accumulated water in the water washing pipeline, so the effect of emptying cannot be guaranteed

Images