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How to select flange for rubber flexible joint of Luoying pipeline

Time: 06-05 󰃯 Reading times: 625 󰃳 Editor in charge: The sea 󰃗 Column: product focus

Introduction: If the rubber joint only consists of rubber joint and rubber joint, the rubber joint is not used in the valve. Cast steel flange and forged flange are two kinds of common flange, so everyone

Rubber joint It is composed of rubber ball and two flanges. If only the rubber ball has no flange, it is useless. The flange has the function of installing and connecting valve accessories in the rubber joint. Cast steel flange and forged flange are two kinds of common flange. How should we choose the flange of rubber joint?
First of all, before selecting the flange, we should first determine whether its specification, model, pressure and the number of screw holes are appropriate. On the other hand, we should check whether the manufacturing surface of the flange is smooth, there are wood and sand holes, whether the flange hole is uneven, and whether the surface is beautiful and generous.
The difference between forged flange and cast steel flange depends on the difference in the manufacturing process of flange. The cost of forging flange is higher than that of forging flange. It is produced by forging on the basis of cast steel flange. Therefore, forged flange has no sand hole and exhaust port, and its corrosion resistance, acid and alkali resistance, as well as other service life and hierarchical characteristics Better than cast steel flange.
The advantage of cast steel flange depends on the ability to make very complex modeling design, and the cost is relatively low. Cast steel flange is forged flange, its blank shape is appropriate, the production volume is small, the cost is low, but there will be forging defects. For example, there are vents, cracks, etc. It is easy to damage the internal structure of the forged parts due to uneven casting. Cast steel flange and forging flange are different in processing technology. Forging flange is more expensive than cast steel flange in price. Therefore, under the condition of purchase, customers can choose the rubber joints suitable for their own construction projects according to the actual working conditions of their own construction projects.
Rubber flexible joint In fact, according to different models and specifications, there are different installation methods, which is caused by the different shape design. But generally speaking, its function is almost the same, which is all convenient for shock absorption and sound insulation. Only different models and specifications work in different natural environment will be more and more different. The rubber joint can be divided into: KXT type flexible synthetic rubber joint, kst-f type flexible double ball rubber flexible joint, kst-l type flexible double ball wire connection rubber soft joint, KYT type elastic pipeline shock absorber (reducing connector), kst-l type wind disc rubber flexible joint. Several kinds of rubber joint installation methods with wide interface standards: 1. Before installing the screw rubber joint, place the pipe fittings on both sides to be connected on the horizontal surface, and screw the rubber joint on one section of the pipe before installation, and then screw the other end of the pipe fitting to keep it on the level surface all the time, so as to prevent the rubber ball from tearing off due to uneven support plate in the whole installation process The spanner shall tighten the screw mouth, and fix the rubber joint and the pipe fittings on both sides to the block which is not easy to stretch or distort.
2. Before the installation of the flange rubber flexible joint, the pipes on both sides to be connected should be aligned on the horizontal surface. During installation, the pipe fittings at one end that are fixed firmly should be aligned. Then, the flange on the rubber joint should be rotated to align the two ends of the flange hole around the flange hole. Screw on the screw cap, and then align the flange of the other end with the standard two ends of the flange on the rubber joint, and rotate the rubber The flange on the joint makes the flange mouth relative around. Put on the screw and cover the screw cap tightly. The gap connection of the three parts is made in the horizontal direction to prevent the sealing from being closed.
3. Installation of clamp rubber joint: clamp type rubber joint uses clamp to replace flange and bolt. During installation, the two pipes of clamp type rubber joint can be respectively sheathed on the pipe to be connected, and the rubber joint and pipeline can be fixed and connected according to the pipe hoop