Adjustment lever structure for ultra-large-diameter control valve

Abstract

The invention relates to the technical field of valve manufacturing, in particular to an adjustment lever structure for an ultra-large-diameter control valve. The adjustment lever structure is composed of connecting parts and a valve rod. The connecting parts include the first connecting part, the second connecting part and the third connecting part from top to bottom in sequence. The first connecting part, the second connecting part and the third connecting part are fixed in pairs through the welding process. The valve rod extends out from the interior of the third connecting part. A weldingpressing block is arranged at the junction between the valve rod and the third connecting part. The outer side of the middle portion of the valve rod is provided with a taper pin. The adjustment leverstructure acts on the middle portion of the control valve, belongs to the core component of the control valve, achieves the adjustment effect, is simple in structure and reasonable in layout and hasa certain universality and airtightness.

Description

technical field [0001] The invention relates to the technical field of valve manufacturing, in particular to an adjusting rod structure used as a super-large diameter adjusting valve. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to its function, it can be divided into shut-off valve, check valve, regulating valve and so on. The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. [0003] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves (...

AI Technical Summary

Problems solved by technology

Commonly used classifications of regulating valves: pneumatic regulating valves, electric regulating valves, hydraulic regulating valves, self-operated regulating valves, but the existing regulating valves have great limitations and cannot meet the needs of modern industrial production

[0005] At present, the demand for super large-caliber all-welded ball valves for long-distance pipelines in heating projects in major cities is increasing day by day. Due to the limitation of domestic technology and manufacturing level, the required valves are mainly imported, which increases the project cost.

Images