2results about How to "Reduce detection bias" patented technology

The application discloses a sampling device for water pollution detection and belongs to the technical field of sampling devices, which comprises a support frame, a first lifting plate is slidably arranged on the support frame, a support plate is fixedly connected to the first lifting plate, a reciprocating screw rod is rotatably connected to the support plate, a first sliding rod is threadedly connected to the reciprocating screw rod, a first fixed plate is fixedly connected to the first sliding rod, one end of the first fixed plate is fixedly connected to a first guide rod, the other end of the first fixed plate is fixedly connected to the outer side wall of a fixed ring, a sampling cylinder is fixedly installed in the fixed ring, and multiple groups of sampling cylinders can simultaneously perform sampling work at the same depth through cooperation of the first guide rod and the second guide rod, and multiple groups of sampling cylinders can simultaneously perform integral movement through cooperation of the reciprocating screw rod, so that the sampling cylinders can perform multiple-point sampling work in a sewage pool, and sampling efficiency and detection representativeness are improved.

The utility model relates to a kind of fine grinding diameter automatic detection measuring machines, including pedestal;It is used for supporting product to be arranged at the center of pedestal support assembly;Detection mechanism is measured to product;Respectively arranged in the both ends of detection mechanism: driving mechanism for driving product rotation, including stepper motor, driven wheel driven by stepper motor, transmission wheel transmission connection with driven wheel by belt, the driven wheel is fixedly connected with limit board, and first centre is equipped with driven wheel coaxial on limit board;For clamping product clamping mechanism, including clamping cylinder, ejector rod driven by clamping cylinder, sliding table pushed by ejector rod, second centre is equipped for resisting product on the sliding table;The first centre and second centre cooperate clamping product and drive its rotation.Solve the conventional roundness and diameter detection need worker manual operation monitoring equipment to detect, leading to detection precision is poorer, the problem of low detection efficiency.