Flow limiting valve with adjustable section

Abstract

The invention discloses a flow limiting valve with a adjustable section. By installing a rhombic stop block in a gate valve, the position of the rhombic stop block is changed when a valve rod is rotated, a channel convenient for a fluid to pass through is reserved in the middle of the rhombic stop block, the size of the flow of the fluid flowing through the gate valve is controlled when the size of inner pore diameter is changed, and the purpose of flow limiting is achieved; meanwhile, the function of a pressure reduction pore plate can be achieved when the pore diameter is certain, the internal current-limiting rhombic stop block is mounted inside a valve body, two sides of the rhombic stop block are provided with sliding columns used for adjusting positions, the change of the size of ofthe inner pore diameter of a rhombic baffle is reached by changing the positions of the sliding columns, one sides of the sliding columns are mounted in preset sliding rail grooves of the valve body attached to the sliding columns, and other sides of the sliding columns are mounted in the sliding groove in a rotatable adjusting rotating disc. When a hand wheel is convenient to rotate, a conical gear at the lower end of the valve rod drives a conical gear at the adjusting rotating disc, the rotating disc is adjusted to rotate, the position of the rhombic stop block is changed, and the inner pore diameter of the rhombic stop block is enlarged or reduced to achieve the purpose of flow limiting.

Description

technical field [0001] The present invention relates to products for use in industrial pipelines. In particular, it relates to a flow-limiting valve with adjustable cross-section, which needs to have flow-limiting and pressure-reducing effect when the fluid flows through the gate valve. Background technique [0002] In the industrial pipeline network, many large-scale pipeline networks need to use gate valves to control the on-off of the fluid in the pipeline. At present, in the use of gate valves, when the flow rate adjusted by the gate valve is easy to produce large noise, it is also easy to generate gas phase. , when the fluid flows between the gate valve body and the partition, it will cause a large change in the flow direction of the fluid, lose more kinetic energy, generate greater noise in the gap position, and have a greater corrosion effect on the valve body and the partition . For this reason, the applicant has designed a flow limiting valve with adjustable cross...

AI Technical Summary

Problems solved by technology

[0002] In the industrial pipeline network, many large-scale pipeline networks need to use gate valves to control the on-off of the fluid in the pipeline. At present, in the use of gate valves, when the flow rate adjusted by the gate valve is easy to produce large noise, it is also easy to gen

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