Nutritional powder automatic adding device for a surface grinding machine

Abstract

The application discloses a kind of automatic adding equipment of flour mill nutrition powder, equipment includes main bin, weighing sensor, nutrition powder bin and controller;Inner bucket is fixedly installed in main bin, and the discharge opening in the bottom of inner bucket is communicated with the bin door in the bottom of main bin;Weighing sensor is clamped between the inner wall of main bin and the outer wall of inner bucket, and only bears the weight of inner bucket and internal material to be ground;Nutrition powder bin is fixed to the side of main bin, and the bottom is provided with a stepping motor and a powder feeding mechanism of powder feeding screw;Controller is electrically connected with sensor and motor.The equipment is innovatively installed by sensor, isolates the self-weight and vibration interference of bin body, and the detection accuracy is improved by more than 30%;The layered design of inner bucket and main bin reduces material residue and meets the requirements of food safety;The overall structure is compact, suitable for small flour mill, the installation space is reduced by 40%, compatible with corn, wheat and various nutrition powder, suitable for flour mill nutrition fortification demand in Africa and other regions.

Claims

1. An automatic nutrient powder adding device for a flour mill, characterized in that, include: The main hopper is used to hold the material to be ground. The bottom of the main hopper is provided with an openable hopper door. An inner hopper is fixedly installed inside the main hopper. The bottom of the inner hopper is provided with a discharge port. The discharge port is corresponding to and connected to the hopper door. A weighing sensor is fixedly clamped between the inner wall of the main hopper and the outer wall of the inner hopper. The force-bearing surface of the weighing sensor fully bears the weight of the inner hopper and the material to be ground inside the inner hopper. It is used to detect the weight change of the inner hopper in real time and generate a weight simulation signal. A nutrient powder hopper is fixedly installed on the side of the main material hopper to hold the nutrient powder to be added. The bottom of the nutrient powder hopper is provided with a powder feeding mechanism. The powder feeding mechanism includes a powder feeding screw and a stepper motor. The output shaft of the stepper motor is drivenly connected to the powder feeding screw. The controller is fixedly installed inside the main material silo or outside the nutrient powder silo. The controller is electrically connected to the weighing sensor and the stepper motor via wires.

2. The automatic nutrient powder adding device for a flour mill according to claim 1, characterized in that, The controller integrates a signal processing circuit. The controller receives the analog weight signal output by the weighing sensor, converts it into a digital signal through the signal processing circuit, calculates the feeding speed of the material to be ground, and outputs a PWM control signal to adjust the rotation speed of the stepper motor, so that the nutritional powder and the material to be ground flowing into the flour mill are kept in a preset ratio of 1:1900 to 1:2100.

3. The automatic nutrient powder adding device for a flour mill according to claim 1, characterized in that, The inner hopper is made of food-grade 304 stainless steel, and the inner wall of the hopper is smooth.

4. The automatic nutrient powder adding device for a flour mill according to claim 1, characterized in that, The main material hopper is made of food-grade PP injection molding. The top of the main material hopper is provided with a feed inlet, and the edge of the feed inlet is provided with an upward-protruding baffle.

5. The automatic nutrient powder adding device for a flour mill according to claim 1, characterized in that, The bottom surface of the inner hopper is an inclined surface that slopes downwards towards the discharge port.

6. The automatic nutrient powder adding device for a flour mill according to claim 5, characterized in that, The top of the inner hopper has horizontally extending mounting parts on the left and right sides. There are four weighing sensors, and two weighing sensors are provided on the top surface of each mounting part. A buffer rubber pad is provided between the weighing sensors and the mounting part.

7. The automatic nutrient powder adding device for a flour mill according to claim 1, characterized in that, The stepper motor is fixedly installed inside the main material bin, and the stepper motor is connected to the powder feeding screw via a coupling; the bottom of the nutrient powder bin has a conical structure, and the powder feeding screw is rotatably inserted through the bottom of the nutrient powder bin. The powder feeding screw is provided with a spiral powder feeding groove, and part of the spiral powder feeding groove is exposed on the outside of the nutrient powder bin.

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