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The frame has JBT type (79 standard), JAI type (69 standard), TJ type, FTJA type, TJQ type, TJA type, WJ type, LWJ type, DJ type, LDJ type, DXJ type, SJ type, LSJ type, JXD type, JXLD type, JBLD type, SJA type, XD type, XS type, etc. Read More

Brief introduction of packing seal Packing seal refers to a dynamic sealing device that generates compression force between packing, rotating parts and fixed parts through pre-tightening or self-tightening effect of medium pressure.Also known as 'stuffing box seal'.There are many structural forms, mainly composed of packing, stuffing box and packing fixing parts.Commonly used filler materials include asbestos fabrics, carbon fibers, rubber, flexible graphite and engineering plastics, etc., prefabricated into rings or strips (some need to be pre-impregnated with fillers with good lubricity), and adopt multi-ring or spiral multi-layer structure.The stuffing box is used to place the stuffing.Packing fixtures include glands, bolts and springs, etc., which are used to pre-tighten the packing and prevent medium leakage during work, and the spring can play a compensating role.The scope of application is mainly used for dynamic sealing of process machines and moving parts of equipment in the machinery industry, such as centrifugal pumps, compressors, vacuum pumps, mixers, shaft seals for reactors, and plungers or piston rods for reciprocating pumps and reciprocating compressors. As well as the stem and solid of the screw motion valve Read More

Double-end mechanical seal The principle of double-end mechanical seal is basically the same as that of single-end mechanical seal, both rely on the end faces (friction pairs) perpendicular to the axis of rotation to keep fit and slide relative to each other under the action of fluid pressure, elastic force of the compensation mechanism and the cooperation of auxiliary seals And constitute the device to prevent fluid leakage.The double-end mechanical seal has two end-face seals. If the primary seal fails, the secondary seal can still seal to prevent leakage.Generally, double-end seals require an external sealing liquid system, and the sealing liquid is introduced into the sealing cavity for sealing, lubrication and cooling, and most of them are used for circulating cooling.The sealing fluid can not only flush the friction pair to improve the working environment of the mechanical seal, but also serve as an important detection method for the failure of the primary sealing surface. Read More