一种纳豆发酵用控温搅拌装置
By designing a temperature-controlled stirring device, the problem of uneven temperature and humidity during natto fermentation was solved, achieving automation of the natto fermentation process and stability of product quality, thereby improving fermentation efficiency and product consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN YANMINGHU SOYBEAN BIO-TECH CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing natto fermentation equipment lacks effective humidity control methods, resulting in uneven temperature and insufficient humidity during fermentation, which affects mycelial adhesion and extension, leading to low fermentation efficiency and unstable product quality.
A temperature-controlled stirring device for natto fermentation was designed. It uses an electric heating film and water bath heating combined with a temperature sensor to achieve constant temperature control. Humidity is regulated by a fan and a humidity sensor. The two stirring paddles are arranged alternately and driven by a belt pulley assembly to perform uniform stirring. An annular cavity is formed to supply oxygen and a one-way valve is used to maintain a slight positive pressure to prevent contamination.
It achieves temperature uniformity and humidity stability during the fermentation process, improves fermentation efficiency and product consistency, prevents mycelial damage, and enhances the cleanliness and success rate of the fermentation process.
Smart Images
Figure CN224513486U_ABST
Abstract
Claims
1. A temperature-controlled stirring device for natto fermentation, characterized in that, The device includes a housing (1), a bracket (101), a sealing cover (2), a feeding port (3), a mixing tank (4), a motor (5), a stirring paddle (6), a pulley assembly (7), an electric heating film (8), a controller (9), a fan (10), a humidity sensor (13), and a temperature sensor (131). The four corners of the bottom of the housing (1) are fixedly connected to the bracket (101), and the top of the housing (1) is fixedly connected to the sealing cover (2). The top of the sealing cover (2) is connected to and communicates with the feeding port (3). The mixing tank (4) is located inside the housing (1). The upper periphery of the mixing tank (4) is evenly provided with through holes (41), and an annular cavity is formed between the housing (1) and the mixing tank (4). The motor is installed on the right side of the top of the sealing cover (2). (5) Two stirring paddles (6) of different lengths are rotatably connected inside the top of the sealing cover (2). The blades of the two stirring paddles (6) are staggered. The output shaft of the motor (5) passes through the sealing cover (2) and is fixedly connected to the top of the stirring paddle (6) on the right. The upper parts of the two stirring paddles (6) are connected by a belt pulley assembly (7). An electric heating film (8) is installed at the bottom inside the outer shell (1). A fan (10) is installed on the upper part of the outer wall on the left side of the outer shell (1). A humidity sensor (13) is installed on the upper part of the inner wall on the left side of the outer shell (1). A temperature sensor (131) is installed on the upper part of the inner wall on the right side. A controller (9) is installed on the right side of the front part of the outer shell (1). The motor (5), the electric heating film (8) and the fan (10) are all electrically connected to the controller (9).
2. The temperature-controlled stirring device for natto fermentation according to claim 1, characterized by It also includes a filter layer (110), and the air inlet of the fan (10) is provided with an air filter layer (110).
3. The temperature-controlled stirring device for natto fermentation according to claim 2, characterized by It also includes an exhaust port (11) and a check valve (12). An exhaust port (11) is opened on the upper part of the right outer wall of the housing (1), and the exhaust port (11) is connected to the check valve (12).
4. The temperature-controlled stirring device for natto fermentation according to claim 3, characterized by It also includes a water inlet (14), and a water inlet (14) is provided on the lower part of the left side wall of the outer shell (1).
5. The temperature-controlled stirring device for natto fermentation according to claim 4, characterized by It also includes a handwheel valve (15), and the bottom of the mixing tank (4) is connected to and connected to two discharge ports. The discharge ports penetrate downward through the bottom of the outer shell (1), and a handwheel valve (15) is installed on the discharge ports.
6. The temperature-controlled stirring device for natto fermentation according to claim 5, characterized by It also includes an inoculation port (21), a screw cap (22), an observation window (23) and a water level window (16). The inoculation port (21) is located at the center of the top of the sealing cap (2). The screw cap (22) is threaded onto the upper part of the inoculation port (21). The observation window (23) is located on the front side of the top of the sealing cap (2). The water level window (16) is located on the left side of the front part of the outer shell (1).