HPT hydraulic cone crusher

Mounted on top of mantle, the distributor scatters incoming material evenly around crushing cavity and prevents one‑sided concentrated feeding. Uniform material distribution ensures even liner wear, full capacity utilization and reduced unbalanced vibration. Cracked or fallen‑off distributor causes biased feeding, resulting in localized rapid liner abrasion, persistent eccentric vibration and fluctuating discharge size. Inspect distributor during routine patrols and replace it promptly once wear exceeds threshold.

Abnormally high hydraulic pressure is frequently triggered by chamber blockage or persistent large hard foreign objects leading to overload. Degraded hydraulic oil contaminated by dust may cause valve blockage and pressure disorder. Failed cooling system raises oil temperature, changes viscosity and brings pressure fluctuation. Blocked pipelines or misadjusted relief‑valve settings also produce high‑pressure alarms. Shut down for troubleshooting upon alarm. Forced continuous operation is forbidden to avoid hydraulic component rupture under sustained high pressure.

Choke‑feeding means keeping the upper crushing cavity continuously filled with material, which is essential for inter‑particle crushing. It does not mean jamming the chamber but maintaining proper material height inside observation window with steady sufficient feed. Upstream conveying equipment must match capacity to avoid feed shortage. Feed particle size should stay within permitted range. Choke‑fed condition delivers best particle shape and throughput. Irregular feeding leads to poor product quality and unstable machine load.

When iron or foreign objects enter crushing chamber, crushing load rises sharply. HPT multi‑cylinders quickly release pressure, moving the mantle downward to widen discharge gap and let foreign matter pass through. After discharge, hydraulic system automatically resets gap to original setting for continuous production. The whole process runs automatically without manual operation, preventing severe damage to mantle, liners and frame. Nevertheless, magnetic iron removal equipment is still recommended upstream to reduce tramp‑release triggering frequency.

Primary wear parts are mantle and concave liners subjected to direct particle compression and wear. Secondary wear components include feed hopper liners and distributor wear sleeves. High‑manganese alloy steel is commonly adopted. Service life is affected by ore hardness, choke‑feed status and abrasive silica content. Wear accelerates significantly when crushing high‑silica basalt or iron ore. Regularly check residual liner thickness. Replace parts once reaching wear limit to avoid erosion damage to metal base components.

HPT multi‑cylinder hydraulic cone crusher is designed for secondary and tertiary crushing, receiving feed from jaw crushers to produce high‑quality manufactured sand and aggregates. It suits medium‑hard and hard ores and is not intended for large lump raw ore feeding. Adopting inter‑particle crushing principle, it produces well‑rounded aggregates with low flaky content. It is widely deployed in aggregate lines, metal‑ore beneficiation and hard‑stone deep‑processing projects demanding good particle shape.