Replacement and repair of high pressure Union

Replacement and repair of high pressure Union

① It includes the contents of medium repair.

② Clean all gears, bearings and shafts of reducer, lead screw, nut, bevel gear, worm gear and worm of distance adjusting equipment, and bearings of other parts, and replace or correct them.

③ Replace or repair the high-pressure Union, jack up the plunger and cylinder liner of the cylinder and align it from the beginning.

④ Replace or repair the severely worn working mix, supporting shaft, connecting rod, lever and supporting rod of conveying equipment.

⑤ Replace or repair the friction plate of pneumatic friction clutch.

⑥ Replace universal coupling.

⑦ High pressure union is painted from scratch.

(3) Maintenance method and quality standard of high pressure Union.

① The pin shaft at the joint part, bearing with severe wear, bushing, seal, damaged appearance and electrical components shall be replaced.

② The working silver, supporting shaft and transmission shaft with less bending deformation can be straightened, and the service life of straightness after repair is less than or equal to. 06 mm / M and + 0. 06 mm / m respectively.

③ The two ends of the Bush and shaft of the sliding bearing with light wear can be repaired by grinding, and the contact point of the stressed surface shall not be less than 45%.

④ The valve core with light wear can be repaired by grinding, with no leakage as the criterion. Wear severe to replace.

⑤ The engagement between the adjustable lead screw and the nut should be normal. The axial clearance should meet the requirements. The thickness wear of lead screw and nut should not exceed 1 / 5, otherwise it should be replaced.

⑥ Gear and worm gear shall be repaired according to failure mode. However, the wear of the tooth surface should not exceed 1 / 5 of the tooth thickness, otherwise it should be replaced.

(4) The high pressure after maintenance shall be inspected by.

① After minor repair and medium repair of the machine, part of the repair parts are tested and the whole vehicle runs for iomin without load, and the machine is delivered for use after normal operation.

② After the high-pressure union is overhauled, the test run is carried out according to the test run request after the installation of the new machine. The inspection procedures can be processed after the judgment that it meets the quality standard and meets the technical requirements.

③ The maintenance records and fault records shall be filed.