Integral triple valve and casting technology thereof

Abstract

The invention relates to a metal valve, in particular to an integral triple valve and a casting technology thereof. The triple valve casting comprises a valve body, valve element through holes, a main flowing channel, through holes, auxiliary flowing channels, circular-ring-shaped oil grooves and small circular-ring-shaped oil grooves are formed in the valve body, the auxiliary flowing channels and the internal main flowing channel are used for connecting the valve element through holes with the through holes, the circular-ring-shaped oil grooves and the small circular-ring-shaped oil grooves are formed in the valve element through holes, the through holes and the auxiliary flowing channels, and openings of the through holes are located on the surfaces of the valve body and communicate with the auxiliary flowing channels of the valve body. The casting technology comprises the steps of shell-shaped mold making, clay core making, clay core assembling, clay core coating, clay core and shell-shaped mold assembling, molding operating, smelting operating, pouring operating and casting cleaning and inspecting. The integral triple valve has the advantages of being high in integration level, small in spatial structure, precise in internal flowing channel size, long in life, high in inner surface cleanliness and the like and is wide in application range.

Description

technical field [0001] The invention relates to a metal valve body, in particular to an integral triple valve body and its casting process. Background technique [0002] The valve body is a key component of the hydraulic system of agricultural machinery. The original valve body is mostly assembled with multi-way valve body, but the assembled valve body has defects such as large space structure and easy leakage. The integral structure valve body replaces the slice valve. The internal structure of the integral valve body casting is complicated, and the production of castings is difficult. At the same time, the internal abortion of the triplet is complicated, and the manufactured sand core is easily deformed and broken, and it is difficult to ensure the dimensional accuracy of the flow channel. [0003] The cleanliness of the inner surface of the casting directly affects the flow of liquid in the valve body, thus affecting the efficiency of the whole machine. Generally, blank...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to prevent the internal deformation of the casting, ensure the dimensional accuracy of the casting and the cleanliness of the inner surface of the casting, and ensure that the casting has no defects such as shrinkage cavity and air hole The problem

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