4results about How to "Meet the testing standards" patented technology

This utility model relates to the technical field of extraction devices for veterinary drug residue detection, and more particularly to an extraction device for veterinary drug residue detection, comprising a device body, a receiving frame fixedly connected to the top left side of the device body, a feeding box fixedly installed at the top rear section of the receiving frame, a cover plate hinged to the top of the feeding box, and a flow guide frame connected to one end of the front of the feeding box. In the sample addition stage, the inclined design of the flow guide frame allows the sample to automatically slide into the centrifuge tank, eliminating the need for manual transfer; during centrifugation, the centrifuge and pump one automatically complete solid-liquid separation and liquid storage; during reagent titration, pump two and the titration nozzle precisely and quantitatively add reagents; compared to traditional manual operation or simple mechanical assistance extraction devices, this reduces a large number of tedious manual operation steps, significantly shortens the detection time, increases the sample processing capacity per unit time, and effectively meets the high efficiency requirements of modern veterinary drug residue detection.

A method for modifying a side-tilting hydraulic tipper includes five steps: first, fixing the clamping arms; second, disassembling accessories; third, lifting the clamping beam; fourth, disassembling the clamping beam; and fifth, modifying the clamping arms. The modification only requires adding hydraulic cylinders and counterweights. All other components of the side-tilting hydraulic tipper's clamping device utilize existing parts from the original side-tilting type II tipper's clamping device. After modification, each clamping arm moves independently under the drive of its corresponding hydraulic cylinder. The extension and retraction of the hydraulic cylinders control the rotation of the clamping arms on the beam, thus completing the pressing operation. The rotation of the clamping arms is controlled solely by the hydraulic cylinders, eliminating the need for a pawl and ratchet locking device and preventing tooth skipping. This design not only allows for individual control of each clamping arm via hydraulic cylinders but also allows for adaptation to different pressing force requirements using different hydraulic cylinders.

This utility model relates to the technical field of cement testing equipment, specifically disclosing a cement sampling sieving device, including a support platform with an inclined groove on the support platform. A sieving component slides within the groove, and a tension component is fixedly connected to one end of the groove. The tension component is fixedly connected to the sieving component. The sieving component is used for automatically sieving cement samples. The tension component is used to measure the cement sample residue in the sieving component through elastic deformation, and stops sampling after reaching a preset sampling amount. This utility model measures the total mass of the cement sample and calculates the sampling mass by the elastic deformation of a spring, thereby automatically terminating sampling according to the preset sampling amount. It uses mechanical shaking sieving to replace manual sieving, thus improving the efficiency and accuracy of sampling sieving.

This utility model relates to a noise testing chamber, including a soundproof enclosure body with an inlet and an outlet on its side wall; a transfer module, which includes a transmission channel composed of multiple electric rollers arranged in a row, the transmission channel passing through the inlet and the outlet, limiting structures on both sides of the transmission channel, and multiple guide rollers on the limiting structures, the multiple guide rollers being arranged above the transmission channel, the rotation axis of the guide rollers being perpendicular to the plane where the multiple electric rollers are located, the multiple guide rollers being distributed along the conveying direction of the transmission channel, and the distance from the multiple guide rollers to the middle of the transmission channel decreasing sequentially; and a testing module disposed inside the soundproof enclosure body. This utility model reduces the workload of operators and improves the efficiency of motor noise detection.