34results about How to "Guaranteed Quality Standards" patented technology

The invention discloses a zero-emission California perch temperature-controlled seedling raising method, which belongs to the technical field of aquaculture and includes site selection and treatment, installation of filtering devices and heating pipes, plant cultivation in artificial wetlands, cleaning and arrangement of seedling ponds, water temperature control, and fish fry In the steps of stocking, breeding management, and large-scale fingerling cultivation, using industrial circulating water facilities, through the joint application of water temperature control technology and water quality treatment technology, the factory temperature-controlled seedlings of California perch are carried out in late winter and early spring to grow large-scale fish. After the fish species are raised, they will be reared in separate ponds outdoors, and they will reach market specifications by the end of September. The present invention can cultivate large-scale California perch seedlings, realize the goal of cultivating and going on the market in the same year, and avoid feeding chilled fish in the whole breeding process, which can save costs.

The invention particularly discloses an activated carbon air purifier capable of detecting harmful gas. The activated carbon air purifier comprises an air purifier box, and further comprises a controller, an air inlet pump, an air outlet pump, an air blower, a filter layer set and gas sensors; the filter layer set is detachable; and the controller, the air inlet pump, the air outlet pump, the air blower, filter layers and the gas sensors are electrically connected. The air purifier is provided with the multiple gas sensors, the quality of air obtained before and after purification can be detected, and it is guaranteed that the quality of the purified air reaches the standard; the controller can assess the air quality according to preset procedures and controls the working states of the air inlet pump, the air outlet pump and the air blower in real time according to data of the gas sensors, and a control panel can input the quality of the air in a zone into the corresponding preset procedure; activated carbon is adopted in the air purifier, extra working waste cannot be generated in the working process, and the activated carbon air purifier is green and environment-friendly; and the air purifier has a wide market prospect.

The invention provides a method for preparing a metallographic specimen of an ultra-fine grain hot-rolled ribbed steel bar, which comprises the following steps of: limiting the particle size of a grinding wheel in a flat grinding machine in the step (3) to be 80 meshes, adjusting to use 320-mesh abrasive paper in the step (4), and carrying out multiple combined tests on the abrasive paper in the step (4) and other abrasive paper with various meshes, preferably 800-mesh abrasive paper as the step (5), so as to obtain the metallographic specimen of the ultra-fine grain hot-rolled ribbed steel bar. After improvement, the method only comprises seven steps, two steps are omitted compared with a traditional sample preparation method, grinding and polishing operation can be completed within two minutes by using the method, about three minutes are saved compared with the traditional sample preparation method, the operation efficiency of metallographic sample preparation is greatly improved, meanwhile, an inspection surface is free of illusion, and the method is suitable for large-scale popularization and application. The sample forming rate can reach 100%; the sample preparation steps are simplified, the time spent on grinding and polishing is shortened, the sample preparation efficiency and effect are improved, the labor intensity of workers is reduced, and meanwhile it is guaranteed that the sample preparation quality reaches the standard.