Analysis of the three screw pump fault repair

Three screw pump for conveying temperature ≤ 150 ℃, viscosity 3-760cSt, non-solid particles, non-corrosive, lubricated medium. Mainly used for fuel delivery, hydraulic engineering, marine engineering, petrochemical and other industries. Its conveying features are: continuous linear media delivery, no stirring, no pulsation; small vibration, low noise; high pressure, high efficiency; simple structure, easy assembly and disassembly; small size, light weight; slight wear and long life. Three-screw pump in the use of can have important significance and value, in use will have some failure, in accordance with the normal use and instructions to use, to ensure that can have a long service life and value, the proper way to repair and Repair, the repair methods described below: First, the shell and shell crack repair shell cracks can be cast 508 nickel-copper welding electrode repair. Welds to be close and yuan stomatal, with the flatness of the pump cover with no more than 0.05 mm flatness. Drive shaft bushing hole and driven shaft wear and tear repair: Drive shaft bushing hole wear, the reaming method can be used to eliminate wear marks, and then with increased to the appropriate size of the bushing. Follower shaft wear and tear to wear and tear to eliminate traces of reaming method, and then press the hole reaming the actual size of the preparation of the driven shaft. Second, the drive shaft and bush wear repair Three screw shaft drive shaft and bush wear, with the gap increases, will certainly affect the pump oil. In this case, you can repair the drive shaft or bushing method to restore its normal with the gap. If the drive shaft wear slightly, simply press the old bushing and put on the standard size bushing, with the gap can be restored to the allowable range. If the drive shaft and bushing wear serious and serious with excessive clearance, not only to replace the bushing, and the drive shaft also applies chrome or vibration welding method to increase its diameter, and then grinding to the standard size, recovery and bushing With the requirements. Third, the three screw pump cover repair work plane repair: If the pump cover wear a small work surface, manual grinding method can be used to eliminate wear marks, that is, put a little valve in the platform or thick glass plate sand, and then the pump cover on top Grinding until wear marks disappear, the work surface so far. When the pump cover working surface wear depth of more than 0.1 mm, should be taken after the turning grinding method to repair. Three screw pump chamber cavity repair: After the pump chamber cavity wear, the general cavity set method to repair, is about to enlarging the inner cavity set with cast iron or steel bushings. Inlaid, the lining of the cavity. Seat Repair: Pressure limiting valve has two kinds of ball valve and plunger valve. Ball seat wear, the ball can be placed on a valve seat, and then gently tap the metal ball, until the ball valve and valve seat so close. If the valve seat is worn seriously, first remove the worn marks by reaming, and then use the method to make it close. Plunger seat wear, you can put a little valve sand grinding until close together. Three screw pump in use in accordance with the normal use of production, in the event of failure in accordance with certain methods of repair, to ensure the normal life and value, to give full play to the good value.

Hydrothermal Synthesis Autoclave Reactor With PPL Chamber


Hydrothermal synthesis reactor is small lab pressure reactor with stainless steel 50ml 100ml 150lml 200ml 300ml 500ml and inside chamber or lining will be ptfe or ppl with different temperature

The Hydrothermal Autoclave reactor use to carry hydrothermal reaction at high pressure and high temperature, which adopts the external heating mode, is a kind of closed container to dissolve the refractory material

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