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 discloses an intelligent rail laying method and intelligent rail laying equipment. The equipment includes a rail conveying vehicle, a rail sorting vehicle with a rail sorting device, a rail pushing vehicle with a rail pushing device, and a rail pushing vehicle located in front of the rail conveying vehicle. The rail tractor of the traction device is still equipped with a roller gripper device on the rail tractor, and a special roller recovery vehicle is provided behind the rail tractor, which has a roller gripper device and a roller pull-out device; A fastener fastening car is provided, and the fastener fastening car has a fastening device for installing fasteners to fix the steel rail. In the whole operation process of the entire track-laying equipment, in addition to the need for drivers to drive some work vehicles, process monitoring personnel to monitor the working conditions of each work vehicle, and manual initial fixation of stiff neck rails, other operations no longer require manual participation, which significantly improves the overall equipment. The operation efficiency is high, and the quality standard of the operation completed under the control of the automatic control system can be fully guaranteed.

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 discloses a heating method and device for raw sand. The method includes the steps that the raw sand is put into a device body; the external temperature value is detected; and according to the external temperature value, the raw sand is heated. According to the external temperature value, the raw sand in the device body is heated through a heating mechanism, the influences caused by the lower environment temperature on the raw sand used for casting are reduced, and the temperature of the raw sand is prevented from being too low. On one hand, the chemical reaction speed of a bonding agent is increased, it is guaranteed that the bonding agent can react completely, the bonding degree of the raw sand and the bonding agent is greatly increased, it is effectively guaranteed that the quality of a sand core / sand model reaches the standard, the product quality is improved, the manufacturing time of the sand core / sand model is prevented from being prolonged, the production efficiency is improved, and energy is saved; and on the other hand, the raw sand is prevented from being agglomerated, and a production line or related equipment is protected.

The invention discloses a crude oil electric desalting equipment and method, including a high-frequency / high-voltage pulsed AC power supply system, an electric desalter, a floating emulsified oil collector, an incoming oil pipeline, an oil pumping pipeline, a reinjection pipeline, a chemical dosing pipeline, Heating equipment and compact tubular electric field demulsifier; the oil pipeline is set on the upper part of the electric desalter, and the floating emulsified oil collector is set in the emulsion layer and connected to the bottom inlet of the compact tubular electric field demulsifier ; The top outlet of the compact tubular electric field demulsifier is connected with the bottom of the electric desalter. It can effectively improve the efficiency of crude oil desalination. On the one hand, it solves the problems of poor operation stability of conventional electric desalters and the effect of electric field is not obvious. On the other hand, it can accurately extract and fully break the oil-water emulsion layer that inevitably exists in the electric desalter. After re-injection, the quality of exported crude oil is guaranteed to meet the standard and the oil concentration of the electric desalination cut water is reduced. At the same time, it can also greatly reduce the cost of chemicals and heating.

The invention discloses a manufacturing method for a special road-surface precast plate of a stimulated ice surface of a tire test field. The manufacturing method is characterized by comprising the following steps: manufacturing a precast plate steel template; drilling and turning over a pre-embedded tube circular hole; measuring bottom plate height difference; drilling a bolt hole in a bottom plate; checking the template, clearing impurities and coating a mould release agent; installing a pre-embedded part and a hanger; installing panel ceramic tiles and casting concrete; dismounting the mould, turning cover and checking. Compared with the prior art, the manufacturing method has the advantages as follows: advantages of other concrete component construction processes are integrated, a construction method is simple and easy to operate, the template is convenient to mount and dismount, production efficiency is greatly improved, a construction work-period is shortened, and the template and the hanger can be recycled. The technology has the remarkable advantage of being adaptive to various high-precision concrete prefabricated parts, and has very strong applicability and ascendency on construction of high-quality standard projects such as China car test fields and high speed railways, and similar concrete components.

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.