A corrugated pipe non-metallic lining forming device

Abstract

A bellows non-metallic lining forming device, comprising a main board, a first oil cylinder, a second oil cylinder, and a first linkage mechanism and a second linkage mechanism with the same structure and arranged symmetrically. Arranged in the opposite direction, the first oil cylinder and the second oil cylinder respectively drive the first link mechanism and the second link mechanism to move symmetrically, and evenly stretch the non-metallic lining to a shape that matches the inner wall of the bellows. When the device of the invention is in operation, the non-metallic lining is placed in the bellows, and the two sets of connecting rod mechanisms act simultaneously to forcefully expand the expansion flaps, so that the non-metallic lining is matched with the inner wall of the bellows during continuous deformation. The invention can complete the molding of the non-metallic inner lining at one time, and the work efficiency is doubled; because the force is uniform in the deformation process, the wall thickness of the non-metallic inner lining after forming can be kept basically uniform, and the molding quality is good. In addition, the non-metallic lining can realize the forming process without heating, which further improves the work efficiency and simplifies the process.

Description

technical field [0001] The invention relates to a corrugated pipe processing equipment, in particular to a corrugated pipe non-metal lining forming device. Background technique [0002] Expansion joint is a pipe network component with compensation function widely used in metallurgy, petroleum, electric power, chemical industry, urban heating and other occasions. The main part of expansion joint is bellows. In some working occasions of expansion joints, the medium is severely corrosive, and the bellows are easily damaged under the corrosion of the medium. Even if stainless steel is used as the material of the bellows, it will seriously affect the service life of the bellows under the action of the corrosive medium. At present, the method often used in the anti-corrosion technology of bellows is to set a non-metallic corrosion-resistant lining on the inner wall of the metal bellows. The service life is reduced, the frequency of bellows replacement is reduced, the cost of expa...

AI Technical Summary

Problems solved by technology

The problems of this method are: 1. The processing efficiency of step-by-step stretching is low; 2. The non-metallic lining is subjected to uneven force during the step-by-step stretching forming process, resulting in uneven wall thickness of the non-metallic lining after forming. There is a risk of leakage at the thin wall; 3. With the opening process, flame heating is required to shape it, which increases the difficulty of operation and is time-consuming and energy-consuming

Images