Valve body wax mold of tri-eccentric butt-clamped metal sealing butterfly valve

Abstract

The invention relates to a valve body wax mold of a tri-eccentric butt-clamped metal sealing butterfly valve. The valve body wax mold is characterized by consisting of a front mold shell, a rear mold shell, a left valve body path core, a right valve body path core, a shaft hole core, a plurality of installation hole cores, a baffle plate and a fastening member; the front mold shell and the rear mold shell which are fixed together form a valve body cavity which is matched with the shape of the valve body and comprises a valve body path part cavity, a shaft hole upper end face part cavity, a shaft hole part cavity and an installation hole plate part cavity; the left valve body path core and the right valve body path core pass through the left sides and the right sides of the front mold shell and the rear mold shell so as to be penetrated and fixedly inserted into the path part cavity together; the shaft hole core is inserted into the shaft hole part cavity; the plurality of installation hole cores are respectively inserted into the installation hole part cavity; the baffle plate is covered on the shaft hole end face part of the valve body cavity; and a pouring hole is formed corresponding to shaft hole end face part. The valve body wax mold of the tri-eccentric butt-clamped metal sealing butterfly valve has the advantages of increasing the size precision and the surface finishment of the valve body, reducing the manufacturing cost and improving the production efficiency.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a wax pattern mold of a triple eccentric pair clip metal sealing butterfly valve body. Background technique [0002] At present, the butterfly valve, as a component used to realize on-off and flow control of the pipeline system, has been widely used in many fields such as petroleum, chemical industry, metallurgy, and hydropower. Compared with the traditional butterfly valve, the triple eccentric metal seal butterfly valve has the advantages of high temperature resistance, light operation, no friction in opening and closing, improved sealing performance and long service life. The triple eccentric wafer metal seal butterfly valve is a commonly used butterfly valve variety. However, the current triple eccentric metal-sealed butterfly valve body is made of sand casting blanks and then machined to complete the machine parts. Due to the defects of shrinkage cavity, shrinkage porosity, ...

AI Technical Summary

Problems solved by technology

However, the current triple eccentric metal-sealed butterfly valve body is made of sand casting blanks and then machined to complete the machine parts. Due to the defects of shrinkage cavity, shrinkage porosity, pores and slag inclusions in sand casting, the surface of the casting is rough. The amount of subsequent mechanical processing is large, resulting in high processing costs, low production efficiency, and affecting product quality

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