The T029150450 knife assembly is the core shredding component of the HZT 15MBD Marine Vacuum Sewage Pump System. It consists of two parts:
* Rotating knife (HZT029150400) – mounted on the motor output shaft;
* Fixed knife (HZT029150500) – fixed to the end flange (HZT029150601).
Together, these two components form a highly efficient shredding system, designed to cut and shred ship sewage, black water, and debris, preventing blockage in the vacuum pump and piping, and ensuring long-term, stable system operation.
1. Advantages of structure and manufacturing process
* High-strength 17-4PH (630) stainless steel material:
The blade set is made of a solid 17-4PH stainless steel forging blank, which has been solution-treated and aging-treated (HRC 40-45), and has both high hardness and impact toughness;
* 5-Axis CNC Precision Machining:
The blade surface and the mounting reference surface are completed in one step by five-axis linkage machining, ensuring the matching accuracy and dynamic balance performance of the dynamic and static blades;
* Double-layer heat treatment control:
The hardness gradient of the surface and core is optimized to improve the wear resistance and prevent chipping;
* Mirror blade and anti-corrosion passivation treatment:
Improve cutting efficiency while reducing the adhesion of sewage impurities and biofouling deposition.
II. Function and System Principle
The HZT029150450 blade assembly is located inside the pump head inlet, mounted between the suction chamber (HZT029150320) and the end flange (HZT029150601):
* The motor drives the rotating blades (HZT029150400) to rotate at high speed;
* The fixed blades (HZT029150500) form a shearing mechanism;
* Debris is crushed and wastewater is homogenized within a micro-shear clearance;
* The crushed fluid enters the pump chamber and is drawn out by the impeller (HZT029150701).
This design maintains a stable vacuum system flow while effectively preventing clogging and pump damage.
III. Engineering Features and Technical Advantages
* 🔩 High Shearing Efficiency: The dynamic and static blades work together to continuously shred fibers, hair, plastic, tissues, and other household debris.
* ⚙️ Dynamically Balanced Design: Five-axis machining ensures symmetrical quality of the rotating blades, reducing vibration and noise.
* 💧 Vacuum Compatibility: The fully sealed structure is suitable for vacuum sewage treatment without affecting the system’s vacuum level.
* 🛠️ Maintainability: The blade assembly is a consumable part and can be replaced independently, improving operation and maintenance efficiency.
* 🚢 Corrosion Resistance: 17-4PH alloy material combined with heat treatment process provides long-term resistance to sewage, salt spray, and acid and alkaline media.
IV. Series Adaptation and Compatibility
* Applicable to: HZT 15MBD Marine Vacuum Sewage Pump
* Similar in structure to the 25MBA series, but with different dimensions and connections, not directly interchangeable.
* Strong replacement and repair compatibility: Can be used as a standard replacement part for the 15MBD pump head.
* Mounting Interface: Assembles with HZT029150320 (suction chamber) and HZT029150601 (end flange).
V. Industry Application Scenarios
The HZT029150450 blade set is widely used in:
* 🚢 Marine Sewage and Blackwater Vacuum Collection Systems
* ⚙️ Vacuum Toilet and Sewage Discharge Systems
* 🛳️ Offshore Wastewater Treatment Systems
* 🧰 Port and Marine Sanitation Units
Its durability, anti-clogging performance, and cutting efficiency make it a core component for vacuum sewage treatment equipment.
VI. Technical Support and Supply
توفر HZT معدات كاملة وتصميم نظام وخدمات ملحقاته:
* حلول شاملة لمضخات التفريغ البحرية ومحطات ضخ تفريغ مياه الصرف الصحي
* نظام تصنيع المعدات الأصلية ودعم حوض بناء السفن
* توريد قطع الغيار وخدمات الإصلاح السريع
📧 البريد الإلكتروني للدعم الفني: SJDT1199@gmail.com
🌐 الموقع الرسمي: www.vacuumtoiletparts.com
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