The fully automatic chestnut sheller is an agricultural processing equipment designed specifically for efficient removal of chestnut shells and inner shells. It is widely used in food processing plants, agricultural product cooperatives, and small and medium-sized commercial processing scenarios. Its core advantage lies in replacing traditional manual shelling, significantly improving efficiency, reducing labor intensity, and maintaining the integrity of chestnut kernels.

Working principle and technical structure

The fully automatic chestnut sheller mainly adopts the following mechanical principles to achieve efficient shelling:

Roller squeezing and rubbing separation: Through the cooperation of a vertical tapered spiral roller and an inner rack, the chestnut undergoes continuous rubbing during the top-down pushing process, causing the shell to break due to friction and pressure, and the kernels to be completely preserved. This structure is suitable for chestnuts of different sizes and does not require pre sorting.

Rotating disc cutting: The high-speed rotating stainless steel disc (with a speed of 2800rpm) physically breaks the shell of chestnuts, synchronously peels off the inner membrane, and achieves the integration of "shell removal+skin removal" without the need for water boiling pretreatment. The processing cycle is 20-25 seconds per batch.

Hammer and screening system: Industrial grade models adopt a rotor hammer structure. Chestnuts enter through the feed inlet and are repeatedly hit by high-speed rotating hammer blades, causing the shell to shatter. Then, they are sorted by vibrating screen and airflow to achieve three-phase separation of shell, kernel, and impurities. The processing capacity can reach 1000-1200kg/h.

Temperature controlled thermal expansion and contraction assistance: Some high-end models have built-in heating modules that create micro gaps between the shells through moderate heating, and then combine with mechanical peeling to significantly reduce the damage rate.

Mainstream models and technical parameters

Note: Commercial models generally support timed automatic shutdown, overload protection, and shock absorption and noise reduction functions; The household model has a compact size (about 400 × 580 × 420mm), making it easy to store.

Main manufacturers and procurement channels

The domestic fully automatic chestnut sheller industry is concentrated in Shandong, Henan, and Hubei provinces, with representative enterprises including:

Qufu Runhua Machinery Manufacturing Co., Ltd. (Shandong): specializes in vertical spiral hullers, supports customization of products, has an annual production capacity of over 8000 units, and provides a one-year warranty for the entire machine.

Henan Tongbai Chenxiang Food Machinery Co., Ltd.: Developing a "dual-mode" model that distinguishes between "special for removing awns" and "special for removing kernels", with patented technology ensuring low damage rates.

Qingdao Detong International Trade Co., Ltd. (Shandong): an export-oriented manufacturer whose products meet international standards and support FOB/CIF trade terms, suitable for overseas agricultural product processing projects.

Shenyang Cornerstone Oriental Machinery Co., Ltd.: Provides after-sales installation and technical guidance services, covering the Northeast region.

Users can prioritize manufacturers with national patents (such as Tangshan Shijie's 2017 patent) and 304 stainless steel material certification to ensure food safety and equipment durability.

Usage suggestions and precautions

Operation specifications: It is strictly prohibited to throw hard objects such as stones and metals to avoid damage to the cutting disc; The working environment needs to be dry to prevent the motor from getting damp.

Maintenance and upkeep: Clean up any residue on the cutterhead after each shift, regularly check the tension of the drive belt, and recommend replacing the blades every 300 hours.

Energy efficiency comparison: Commercial models consume about 2-2.2 kWh of electricity per hour, which is much lower than labor costs (manual shell peeling is about 10 kg/h, and the efficiency is only 1/10 of the machine).

Applicable ingredient expansion: After parameter adjustment, some models can be compatible with nut crops such as pine nuts, hazelnuts, and corn kernels for shelling.

Equipment shooting and operation demonstration

Shandong Yuanquan Machinery Co., Ltd. is a production enterprise that integrates the research and development, production, sales, and after-sales service of hydraulic cylinders, baking equipment, oil pressing equipment, and agricultural machinery equipment. The company has over 120 employees and is located in Yishui County, a "thousand year old ancient county" known as the "Oil Top City of China".

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