Flat elliptic cavity blank body containing valve body and valve cover suitable for multi-valve-type valve and forming method

Abstract

The invention discloses a flat elliptic cavity blank body containing a valve body and a valve cover suitable for a multi-valve-type valve and a forming method. Cylindrical sections with the same diameter are arranged at the left end and the right end of the blank body in the horizontal direction, and the diameter of each cylindrical section meets the standard requirement of the valve; the size of a flat elliptic middle section in the vertical direction of the blank body ensures that the middle section can be used for accommodating opening and closing parts of various valves as a motion space and installing sealing parts, and the upper part and the lower part of the middle section are designed according to the heights of different valves; and cylindrical-conical transition sections suitable for installing a valve seat are arranged at the transition positions of the middle section of the blank body and the cylindrical sections at the left end and the right end. The flat elliptic cavity blank body has the advantages of being environment-friendly, good in working performance, good in product quality and convenient to process.

Description

technical field [0001] The invention relates to a green body and a forming method of a flat elliptical cavity containing a valve body and a valve cover suitable for multi-valve valves. Background technique [0002] The existing hydroforming process is mainly used for the processing of simple and standardized pipe fittings such as tees and crosses, and is not suitable for valves (including gate valves, flat valves, check valves, etc.), which have complex shapes and different dimensions. processing. Most of the existing gate valves, plate check valves and other valve blanks adopt casting and forging processes. The casting process has poor environmental protection, molds of the same specification and different valves cannot be used universally, and molds of the same valve with the same specifications and different pressures cannot be used universally, and the castings have problems of poor compactness and quality. The material utilization rate of the valve body produced by th...

AI Technical Summary

Problems solved by technology

The casting process has poor environmental protection, molds of the same specification and different valves cannot be used universally, and molds of the same valve with the same specifications and different pressures cannot be used universally, and the castings have problems of poor compactness and quality

The material utilization rate of the valve body produced by the die forging process is lower than that of casting, the mold is not universal, and the cost is high, while the material utilization rate of the valve body produced by the free forging process is lower, and the processing is time-consuming, so the existing casting and forging processes produce valve bodies. Disadvantages of low efficiency, long period, high cost

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