Preparation method of liner rubber material for soft seal gate valve plates

Abstract

The invention discloses a preparation method of a liner rubber material for soft seal gate valve plates, which comprises the following steps: (1) preparation of rubber material A; (2) preparation of rubber material B; and (3) mixing of rubber material A and rubber material B: mixing the rubber material A and rubber material B in a weight ratio of (2-3):1, adding into an open mill, mixing and carrying out thin pass for 3-5 times. The rubber material can be prepared at lower temperature without plastification; the rubber material is vulcanized on the surface of the soft seal valve plate and the internal surface of the valve opening; the obtained liner rubber valve plate has the characteristics of favorable elasticity, favorable hardness, favorable air tightness, favorable heat resistance, favorable memory, low cost and the like; and the titanium dioxide added in the mixing process can enhance the physical stability of the rubber material and further prolong the service life.

Description

technical field The invention relates to a preparation method of a rubber-lined rubber material, in particular to a preparation method of a rubber-lined rubber material for a soft-sealed gate valve plate. Background technique Soft-sealed gate valve, industrial valve, the opening and closing part of the soft-sealed gate valve is a gate, the direction of movement of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces, and the two sealing surfaces of the most commonly used mode gate form a wedge shape and a wedge angle. In terms of water quality: the soft-sealed gate valve avoids secondary pollution of water quality in the pipe network, reduces direct contact between water quality and metal, and prevents debris from blocking the valve. In terms of manufacturing: Soft-sealed gate valve has the advantages of light switch, reliable sealing, complet...

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is that the rubber lining of the existing soft-sealed gate valve plate has unsatisfactory air tightness, poor heat resistance, poor memory and short service life, high cost, and high energy consumption in the manufacturing process. A rubber-lined rubber material for a soft-sealed gate valve plate and a preparation method thereof

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