Daily maintenance: basic operations determine the quality of treatment

Double wall cleaning after operation

Inner wall shot blasting machine inspection: open the inspection door after daily shutdown, remove the shot and metal chips accumulated on the inner blasting head blades to avoid dynamic balance failure.

Cleaning of the outer wall chamber: clean the residual oxide scale on the conveyor roller, and focus on removing the gap debris of the pipe end clamping device to prevent scratches on the steel pipe surface.

Management of the shot circulation system

Check the adsorption efficiency of the magnetic separator. When the proportion of iron filings exceeds one tenth, the magnetic roller needs to be cleaned;

If the screen is damaged and the aperture is greater than twice the diameter of the shot, replace it immediately.

Sealing guarantee

Check the wear of the labyrinth sealing curtain at the inlet and outlet of the steel pipe. If the rubber curtain is damaged by more than one fifth, replace it as a whole to prevent the leakage of the shot.

Periodic in-depth maintenance plan

Cycle Core maintenance items Operation standards

Weekly 1. Pulse backflush of dust filter cartridges, air pressure meets the standard

2. Temperature measurement of internal and external shot blasting machine bearings

Monthly 1. Adjustment of conveyor sprocket tension

2. Tightening of electrical cabinet terminals

Quarterly 1. Dynamic balance correction of shot blasting machine

2. Total amount of shot replenishment

Quick solution for high-frequency faults

Inner wall cleaning of steel pipe does not meet the standard

Step 1: Check whether the angle of the inner blasting head directional sleeve is offset

Step 2: Check the consistency of the opening of the shot flow valve, and adjust it if the deviation exceeds one tenth

Conveying system stuck pipe

Cause: deformation of pipe end or imbalance of roller height

Handling: Straighten the warping of pipe end and calibrate the horizontal elevation of roller

Puhua Heavy Industry Technology Support System

Directional maintenance plan

For the high anti-corrosion requirements of oil pipelines, provide special testing services for inner wall shot blasting roughness (Sa2.5 grade)

Intelligent operation and maintenance system

Optional steel pipe throughput counting module automatically triggers maintenance reminders (e.g., screen replacement prompt for every 10,000 meters of steel pipe processed).

Core value of equipment

Life extension: The internal polishing head adopts tungsten carbide coating, and the wear resistance is twice the industry standard

Environmental compliance: Dust emission concentration is better than GB 16297-1996 standard