This smart electric stone mill seamlessly combines traditional low-temperature grinding with modern automated features to effortlessly produce ultra-fine, premium commercial matcha.
The DL-6CRT-40 Tea Rolling Machine is engineered for efficient and high-quality tea processing, with a generous capacity of 11 kg per batch.
The DL-6CYL-800 automatic tea cake pressing machine is applicable for pressing ball type tea, round tea cakes and square tea cakes. Its production capacity is 800-1000 pieces per hour. The sizes of tea cakes that this machine can produce are as follows: square tea cakes (25-40 mm), round tea cakes (25-45 mm), and ball type tea (27-35 mm).
Oolong Tea Rolling Machine specializes in tea rolling and shaping. With precise pressure control, it releases tea juice, enhances aroma, ensures stable quality, and suits green tea, oolong tea, etc.—a top choice for tea enterprises.
DL-CRQ-20Z CTC black tea HRS Gyrovane rotorvane machine mainly used for processing CTC black tea.
The Multi-Function Ride On Type Tea Harvester is a high-performance tool for commercial tea gardens. Featuring ride-on operation, adjustable picking parameters, and integrated collection/sorting, it replaces manual picking to save labor significantly. With 5-10x higher efficiency (0.3-0.8 ha/h) and precision plucking that preserves tea quality, it’s ideal for modern large-scale tea production.
DL-6CHL-CY30 belt type tea dryer use diesel heating, also can use gas heating, drying area 20m2, capacity 105kg per hour, click the photo to learn more details about our drying machine.
Pyramid/Triangle Tea Bag Filling Packaging Machine is widely applicable in tea processing plants, food and beverage companies, health product manufacturers, and OEM/ODM tea brands. It is suitable for packaging various teas, including loose-leaf tea, herbal tea, scented tea, functional tea, and instant tea, making it an essential equipment for upgrading the tea packaging process in both domestic and international markets.
Discover the upgraded DL-6CYMJ-50 matcha stone mill grinder featuring a premium wood grain base, adjustable 0-38 RPM, and smart electric lifting. Achieve ultra-fine 800# matcha effortlessly with zero waste.
Quanzhou Deli Agricultural Machinery showcases its new matcha stone mill series (Black Gold, Bluestone, and ball mill models) at the 2026 Xiamen Tea Expo, earning high praise from global tea industry professionals.
Discover technical solutions for uneven moisture in tea drying. Learn how to troubleshoot airflow, calibrate sensors, and optimize batch loads for perfect tea processing.
Discover the art and science of tea rolling. Learn about different rolling classifications, techniques to improve tea quality and efficiency, and the best tea rolling machines for your production.
How to Troubleshoot Uneven Moisture Content During Tea Drying
As a mechanical engineer in the tea processing industry, I frequently encounter facilities struggling with one of the most critical phases of production: drying. Achieving the precise final moisture content (typically around 3-5%) is essential for locking in the tea’s aromatic compounds and ensuring shelf stability. When moisture content is uneven across a single batch, the consequences are disastrous. Over-dried leaves become brittle and lose their complex flavor profiles, while under-dried leaves risk microbial growth and rapid degradation.
If your facility is facing inconsistent drying results, the root cause is rarely the tea itself, but rather the mechanical and thermal dynamics within your drying equipment.
Asymmetrical Airflow Distribution: If the primary fan motor is underperforming or internal baffling is misaligned, heat will channel unevenly, creating severe hot and cold spots within the chamber.
Sensor Drift and Heating Element Failure: Industrial thermocouples and humidity sensors drift over time. Furthermore, if one phase of a multi-group heating element fails, the PID controller will struggle to maintain uniform chamber temperatures.
Static Overloading: Piling wet leaves too thickly on static drying trays prevents hot air from penetrating the center of the mass, leading to a dry exterior and a damp core.
Address Airflow Dynamics: Begin by verifying the fan motor voltage and amp draw against the manufacturer's specifications (e.g., checking that your 0.55 kW fan motor is operating optimally). Inspect the internal galvanized or stainless steel boards for warping that might redirect airflow. Clean all exhaust ports and intake vents using compressed air to ensure zero static pressure buildup.
Calibrate Sensors and Test Elements: Isolate the heating system. If your machine utilizes a multi-group electric heating wire setup, use a multimeter to check the continuity and resistance of each group. Recalibrate your chamber's thermal sensors using a certified secondary digital probe placed directly in the center of the drying area.
Optimize Batch Loading: Strictly adhere to the volumetric capacity of your machine. Spread the leaves in a uniform, thin layer. If your effective drying area is around 5.38 m², your total batch weight should not exceed the strict 15-20 kg limit to allow for proper convective heat transfer.
To prevent recurrence, implement a daily pre-flight checklist. Vacuum out all tea dust from the bottom heating elements to prevent fire hazards and thermal insulation. Inspect door seals for thermal leaks, and crucially, check the mechanical drive systems—such as belts and tray motors—to ensure they are properly tensioned and lubricated.
While static trays require constant manual intervention and meticulous loading, upgrading to automated, dynamic drying systems eliminates human error.
For facilities demanding absolute consistency, we recommend the DL-6CHZ-5QB Rotary Tea Roasting Machine. Instead of relying purely on static airflow, this model features 14 layers of high-grade stainless steel round trays driven by a dedicated 30W motor. The trays rotate continuously at a precise 6 rpm, ensuring every single leaf receives the exact same thermal exposure from the 9 kW, 3-group electric heating system. Encased entirely in stainless steel for maximum thermal retention and food safety, it delivers perfectly uniform batches, every single time.
