Automatic control valve for liquid level

Abstract

The invention discloses an automatic control valve for a liquid level. The automatic control valve for the liquid level comprises a main valve and a float valve, wherein the main valve comprises a valve body and a valve core. The valve body is provided with a first port, a second port, a first runner and a second runner; the first runner and the second runner are separated through a separation body; the separation body is provided with a first through hole and a second through hole; the separation body is provided with a check valve used for opening or closing the second through hole; when the second through hole is opened, the first port and the second port are communicated through the second runner; one end of the valve core is glidingly matched with the valve body so as to form a valvecavity with a variable size between the valve body and the valve core; the other end of the valve core corresponds to the first through hole so as to open or close the first through hole; when the first through hole is opened, the first port and the second port are communicated through the first runner; and the upper part of the valve core is provided with an orifice communicated with the valve cavity. According to the automatic control valve for the liquid level, the ports can be shared when liquid is loaded or unloaded; the structure is compact, and the pipeline layout is convenient. Control is performed through the float valve, the liquid overflow accident is avoided occurring when the liquid is loaded.

Description

technical field [0001] The invention relates to a liquid level control valve, in particular to an automatic liquid level control valve which controls the liquid level through a float. Background technique [0002] In the prior art, a float valve is usually used to control the liquid level, such as the liquid level control valve disclosed in the Chinese utility model patent with the authorized announcement number CN2665477Y, which includes a valve body, a valve cover, a water outlet seal, a control plug, and a control valve. mouth seal ring, lever head, lever arm connected with the lever head, floating ball connected with the lever arm, and the hydraulic self-locking seal is realized by connecting the floating ball through the lever arm. The liquid level control valve with this structure can be well applied Liquid level control when entering liquid. [0003] On the other hand, the current existing hydraulic control valves have separate liquid inlet and discharge ports. Due t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a non-return hydraulic control valve with a compact structure and convenient pipeline layout, aiming at the deficiency that the existing hydraulic control valve needs to separate the liquid inlet and the liquid discharge port to realize the liquid inlet operation and the liquid discharge operation. Functional liquid level automatic control valve

Images