8results about How to "Reduce detection bias" patented technology

The application relates to the field of electromagnetic valve detection, and discloses a port size detection device for electromagnetic valve production, which comprises a workbench, a motor, a rotating block, two groups of connecting rods, a support and an adaptive roller. When the device is in abutment with the electromagnetic valve body, the telescopic column, the connecting rod one and the connecting rod two are driven to move outward. The pressure reading generated by the pressure sensor under the compression of the telescopic column is K2. The maximum value of all K2 and the difference value of K1 are taken to determine whether the electromagnetic valve body port roundness is within the roundness tolerance range, so that the function of rapidly detecting the electromagnetic valve body port roundness is realized, and the detection efficiency of the device is significantly improved.

The utility model relates to food processing safety detection technical field and disclose a walnut milk production food safety detection device with mixed structure, including refractometer main part, one side fixed sampling groove of refractometer main part top, one side of refractometer main part top is hinged to have the apron, one side of apron is equipped with quick -detach assembly, the other side of apron is equipped with limit component, the bottom end of apron is connected with the gasket of clamping, the middle part rotation of apron is equipped with the stirring rod, through setting the shaft and stirring rod on apron, when rotating the shaft, the shaft can drive the stirring rod rotation through driving gear and driven gear, because the diameter of driving gear is greater than the diameter of driven gear, can accelerate the rotational speed of stirring rod, and the stirring rod can be stirred to the sample in the sample groove through the stirring vane, avoids the fat floating and solid settlement, reduces the detection deviation.

The utility model discloses a sewage treatment device capable of monitoring water quality in real time, comprising a main body unit which comprises a sewage treatment box and an aeration assembly arranged in the sewage treatment box; the water quality detection unit is arranged above the sewage treatment tank, is used for detecting the water quality of the sewage and comprises a water quality detection instrument and a driving assembly for adjusting the position of the water quality detection instrument; according to the utility model, the water quality detection instrument is driven by a gear motor, a ball screw and the like in the driving assembly to move along the axial direction, so that the axial position of the water quality detection instrument is adjusted; and then the horizontal position of the water quality detection instrument is adjusted through the arrangement of the electric turntable and the mounting plate, so that the problem that the current detection range is limited to a specific point position and only the water quality condition of the position can be reflected is solved, the detection deviation is reduced, and the actual efficiency of the whole treatment system is evaluated more accurately.

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.

The invention relates to the technical field of impurity detection, in particular to a method for detecting metal and other impurities in clean dust-free cloth, which comprises the following steps: weighing the initial mass M0 of a corrosion-resistant container, putting the dust-free cloth to be detected into the container, and measuring the total mass M1; soaking liquid is added into the container, so that the dust-free cloth is completely immersed; the container is placed on a heating device for constant-temperature heating treatment, metal and other impurity elements in the dust-free cloth are released into the soaking solution, the dust-free cloth is taken out after treatment is finished, and a solution to be detected is obtained; carrying out element content detection on the solution to be detected, and synchronously carrying out a blank experiment to respectively obtain detection results C1 and C0; and calculating the content of each element in the dust-free cloth according to the detection result, the volume of the soaking liquid and the mass difference value. According to the method, the accuracy and repeatability of a detection result can be improved, so that the content of each element in the dust-free cloth can be accurately measured.

The invention relates to the technical field of lion-head goose breeding, and particularly discloses a whole genome association analysis method for lion-head goose egg laying performance. Comprising the following steps: S1, collecting genome DNA of lion-head geese; s2, performing whole genome re-sequencing on the genome DNA extracted in the step S1; s3, performing quality control, filtering and comparison on the original sequencing data in the S2, and detecting a single nucleotide polymorphism (SNP) site; s4, performing correlation analysis on the SNP loci detected in the step S3 and the egg laying traits of the lion-head geese by using a whole genome correlation analysis method; s5, based on a correlation analysis result obtained in the step S4, identifying SNP sites related to egg laying traits; and S6, screening candidate genes according to the SNP sites related to the egg laying traits obtained in the S5. The whole genome association screening can be used for breeding and breeding of lion-head geese, and has the advantages of being accurate in positioning, efficient in screening and high in guidance.

The utility model relates to a kind of weighing device of feeding box, the utility model is through the structure of "built-in weighing device+cover protection", solve the problem that traditional weighing assembly is exposed to dust, material pollution, leading to detection precision decline, service life shortening;Meanwhile through the "L type board sliding slot+slider" guide structure, limit the lateral deviation of aggregate bin in the process of bearing or discharging, avoid to intensify weighing error due to position swing, applicable to the industry of high requirement to material quantity precision control such as feed, food etc..Through the structure of "built-in weighing device+cover protection", solve the problem that traditional weighing assembly is exposed to dust, material pollution, leading to detection precision decline, service life shortening;Meanwhile through the "L type board sliding slot+slider" guide structure, limit the lateral deviation of aggregate bin in the process of bearing or discharging, avoid to intensify weighing error due to position swing, applicable to the industry of high requirement to material quantity precision control such as feed, food etc..