Used Semi-Automated Mushroom Substrate Processing System for Sale

Used Semi-automated Mushroom Substrate Processing System. Integrates high-performance components to efficiently manage pasteurization, cooling, inoculation, and packaging all within a single vessel. Two jacketed Patterson All-Weld Paddle Mixers (37 cubic feet each) operate simultaneously to blend substrate ingredients uniformly while maintaining controlled processing conditions. Substrate moisture content is controlled using a Water Metering Sensor (FD-Q20C) and circulating pump, which measures amount of water added from a 120-gallon (A.O. Smith) hot water tank into the substrate. The mixers heat the substrate up to 98c through their closed loop hydronic heating jackets. The Reimers (RHC-360) Electric Steam Boiler feeds steam to the Cascade Flow Control Solutions Heat Exchanger (263450-004) which heats the hydronic jacket loop. A steam actuating valve (STERLCO D151-F) modulates steam flow from the boiler, maintaining optimal jacket temperatures and pressure needed to reliably pasteurize substrate. After pasteurization, the substrate is cooled via the jackets which are isolated and chilled through a two-stage Thermaline Heat Exchanger (T8 S-20). The first cooling stage transfers substrate heat to municipal water. The heated municipal water is collected in the 120 gallon water tank for later use in substrate hydration. The second cooling stage uses glycol chilled by a G&D 10 HP (GD-10H-HT) unit to rapidly reduce substrate temperature for inoculation. Inoculation is performed through a hatch under sterile Air Science flow hoods (36" and 24"), providing clean, positive-pressure air to prevent contamination. Substrate packaging takes place at the bottom of each vessel through an 8" pneumatic actuating valve in unicorn bags, long tubes, or by connection to another system. Mixer #2 uses a Spartan Controls automated control package to manage processing parameters like mixing, heating, cooling, and packaging via integrated sensors and pneumatic valves. Mixer #1 is manually operated. Sterile air filters from Davis Controls maintain sterile positive-pressure conditions in the mixers throughout the entire process. The steam and hydronic system include Axiom DMF-300 and CBF-2 chemical dosing units to maintain system pressure, fluid levels, and chemical treatment of jacket water. Supporting components including solenoid valves, expansion tanks, gauges, and pipework in steel, stainless, brass, copper, and PEX ensures durability and resistance to temperature fluctuations. Boiler chemicals in the heating loop and inhibited glycol in the chilling loop protect the system from oxidation. The integrated system enables efficient, scalable, and consistent production of high-quality mushroom substrate with reduced labor cost and precise control over all critical processing parameters.

Used Equipment Facts About This Machine
🏭 Manufacturer Information

Mixers: Patterson All-Weld (2 units, 37 cu. ft. each)

Steam Boiler: Reimers (Model: RHC-360)

Heat Exchangers: Cascade Flow Control Solutions (Model: 263450-004), Thermaline (T8 S-20)

Water Sensor: FD-Q20C

Hot Water Tank: A.O. Smith (120-gallon)

Steam Valve: STERLCO (Model: D151-F)

Chiller: G&D Chillers (Model: GD-10H-HT, 10 HP)

Airflow Hoods: Air Science (36" & 24")

Automation: Spartan Controls (Mixer #2)

Sterile Filters: Davis Controls

Dosing Units: Axiom (Models: DMF-300, CBF-2)

📄 Product Description

This Used Semi-Automated Mushroom Substrate Processing System integrates top-tier industrial components to ensure complete control over substrate preparation—from pasteurization to packaging—all within dual 37 cu. ft. Patterson All-Weld Paddle Mixers. The system is designed for commercial mushroom cultivation operations seeking high throughput, consistency, and reduced manual labor.
Hydronic heating jackets and an electric steam boiler enable pasteurization up to 98°C, while a two-stage cooling loop ensures rapid temperature drops for sterile inoculation. Mixer #2 is automated via Spartan Controls while Mixer #1 is manually operated. Inoculation occurs under positive pressure sterile conditions, and substrate is packaged through bottom discharge valves into various formats. Ideal for scaling mushroom substrate production with reliable and consistent results.

📊 Specifications

Mixers: 2 x Patterson All-Weld Paddle Mixers (37 cu. ft. each)

Heating Method: Hydronic Jacket w/ Electric Steam Boiler (Reimers RHC-360)

Cooling Method: Two-stage Heat Exchanger (Thermaline T8 S-20, G&D Chiller)

Hot Water Tank: A.O. Smith 120-Gallon

Water Metering Sensor: FD-Q20C

Steam Control Valve: STERLCO D151-F

Inoculation: Under sterile Air Science flow hoods (36" & 24")

Packaging: 8" Pneumatic Valve, Bag or Tube

Automation: Spartan Controls (Mixer #2), Manual (Mixer #1)

Chemical Treatment: Axiom DMF-300 & CBF-2

Sterility: Davis Controls Air Filters

Chiller: G&D 10 HP (GD-10H-HT)

🧪 Applications

This system is designed for:

Commercial mushroom farms

Substrate preparation facilities

Mycology R&D labs

Mushroom spawn and block production

Gourmet and medicinal mushroom growers

Mushroom substrate sterilization/pasteurization operations

Scalable inoculation and substrate cooling

Sustainable agriculture operations

Composting operations needing sterilization

Biotech labs working with fungal cultures

📦 Compatible Product Outputs

Unicorn Mushroom Grow Bags

Polypropylene Tubes

Sterilized Bulk Substrate

Pasteurized Straw or Sawdust Blends

Inoculated Substrate Blocks

Pre-packaged Mushroom Spawn Units

Lab-scale Sterile Substrate Test Batches

Commercial-scale Substrate Batches

Gourmet Mushroom Ready-Grow Kits

Bioreactor Feedstock
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