2results about How to "Reduce granularity" patented technology

This application provides an absolute pressure sensor with an F-P cavity structure and a method for detecting air pressure. The absolute pressure sensor includes: a light source module for linearly modulating the received external sawtooth wave modulation signal to output continuous laser light; an optical fiber transmission module for unidirectional transmission of the continuous laser light to block the reflected light of the continuous laser light from returning to the light source module; an F-P interference cavity including an exit surface of an optical fiber collimator coated with a low-reflectivity film and a total reflection mirror fixed on a pressure-sensitive elastic element. The pressure-sensitive elastic element senses changes in air pressure and deforms, causing the total reflection mirror to shift. The continuous laser light is reflected on the exit surface and the total reflection mirror to form coherent light, generating a beat frequency optical signal carrying air pressure information; a photoelectric detection module for processing the beat frequency optical signal carrying air pressure information transmitted via the optical fiber transmission module to obtain an electrical signal that meets demodulation requirements; and a signal demodulation module for processing the electrical signal that meets demodulation requirements to obtain the air pressure value.

This invention discloses a high-efficiency crushing device for agricultural product processing, relating to the field of agricultural product crushing technology. It includes a base, a support frame at the top of the base, a rotating ring rotatably disposed between two support frames, a crushing cylinder disposed inside the rotating ring, a fixed frame at the bottom of the crushing cylinder, a rotating cylinder at the center of the fixed frame, a connecting plate outside the rotating cylinder, a collecting cylinder connected to the rotating cylinder, a fixed cylinder on the connecting plate, a movable cylinder slidably sleeved outside the fixed cylinder, one end of the movable cylinder penetrating the inside of the collecting cylinder and having a pressure plate installed thereon, a rotating rod inside the fixed cylinder, and a rotating tube rotatably disposed outside the rotating rod. Driven by a power component and via a gear system, the two sets of crushing blades rotate synchronously in opposite directions, resulting in higher crushing efficiency, ensuring thorough crushing and uniform particle size, and improving the production efficiency of agricultural product processing.