Production method of fire-protection control valve and fire-protection control valve
A production method and technology for regulating valves, applied in valve details, safety valves, balance valves, etc., can solve the problems of difficulty in adapting to large-scale orders, oval valves and fewer air ducts, and achieve beautiful appearance, not easy to eddy, flow delayed effect
Inactive Publication Date: 2010-12-01
大荣空调设备(南京)有限公司
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Problems solved by technology
Existing production methods and existing defects of fire control valves for connecting oval air ducts: currently there is no supporting manufacturer independently producing oval valves in the market, and there are very few oval valves and air ducts in the market
This method is a contingency production method when the market is immature. After production, the structure is simple and easy to deform later, and it is not easy to adapt to the large-scale order demand of the market.
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Abstract
The invention is a method for manufacturing a fireproof regulating valve and the fireproofing regulating valve, and includes the methods for manufacturing an elliptical valve, a blade and a shaft. The method for manufacturing the elliptical valve comprises the processing steps of punching, curling circles, welding, pressing ribs, spot-welding, welding a shaft casing, manufacturing a pipe into a semi-finished product; plasma-cutting the round valve into two parts from the center to form two half circles; spot-welding the two circles into a elliptical circle on the half circles and a connectionplate with a reinforced plate, spraying paint plastic, assembling, etc. The method for manufacturing the blade comprises the steps of shearing a rectangular strip on a plate shear; shearing half circles at two ends on a machine shearing machine; pressing out reinforced ribs in the middle of the blade on a bending machine by using a die. The method for manufacturing the shaft comprises the steps of welding an adjustment plate and a shaft to form angle of 90 DEG C minus or plus 1 DEG C, drilling holes, tapping, galvanizing, and assembling. The method has the advantages that an air stream passesthrough a flat round pipe at a slow flowing speed, a vortex is not easy to generate, and adjustment valves can be manufactured, such as a ventilation regulating valve, fireproofing regulating valve, etc. The fireproofing regulating valve has the advantages of simple, reasonable and practical structure, and convenient and time saving installation.
Description
Manufacturing method of fire control valve and fire control valve technical field The invention relates to a manufacturing method of a fire-proof regulating valve used for connecting an elliptical air duct and the fire-proof regulating valve, which belong to the technical field of regulating valve products. Background technique Existing production methods and existing defects of fire control valves for connecting oval air ducts: currently there is no supporting manufacturer independently producing oval valves in the market, and there are very few oval valves and air ducts in the market. At present, the manufacturer also takes a section of the air duct after producing it, and punches holes and adds action parts such as shafts and blades for simple matching. This method is a contingency production method when the market is immature. After production, the structure is simple and easy to deform later, and it is not easy to adapt to the large-scale order demand of the market. ...
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IPC IPC(8): B23P15/00F16K17/36F16K27/00
Inventor 山守典昭
Owner 大荣空调设备(南京)有限公司