7results about How to "Avoid easy removal" patented technology

The utility model relates to a kind of installation structure of special-shaped nozzle, including water pipe and nozzle, water pipe and nozzle are connected by installation component, installation component includes connecting piece, gasket, baffle, pressure piece;Connecting piece inside surface is provided with thread, its water pipe surface is provided with thread, water pipe and connecting piece constitute screw thread connection, and connecting piece surface is equipped with opening, its nozzle passes through opening, baffle is set on the nozzle surface, gasket is also placed in connecting piece inside surface, gasket and baffle contact, pressure piece is also placed in water pipe, and the upper end surface of the water pipe is contacted with the periphery lower end surface of pressure piece.The utility model solves the problem that the existing nozzle and water pipe connection exist water leakage, nozzle is damaged due to thermal expansion and contraction, nozzle is not easy to take out due to rust between thread.

The present invention relates to the field of sheet material transportation and stacking, and discloses an automatic and neat stacking device for solid wood board cores, comprising a bottom plate, wherein the front and rear sides of the upper surface of the bottom plate are symmetrically fixedly connected with support legs, the top ends of two support legs on the same horizontal line are commonly fixedly connected with a side plate, the opposite sides of the two side plates opposite to each other are symmetrically rotatably connected with transmission rollers through a rotating shaft, the outer side walls of the two transmission rollers are transmission-connected with two transmission belts, a double-axis motor is fixedly connected to the right side of the front surface of the side plate located in the front, and the rear end of the output shaft of the double-axis motor is fixedly connected to the front end of the central axis of the transmission roller located on the right side of the upper surface of the bottom plate; a transmission and transportation mechanism is formed by arranging the bottom plate, the support legs, the side plates, the transmission rollers, the transmission belts and the double-axis motor, so that the solid wood board core can be evenly placed on the two transmission belts for transmission and transportation, thereby realizing automatic transmission and movement of the sheet material.

The present disclosure relates to a method for preparing azoxystrobin. This method uses a pentacyclic azole-based compound or a salt thereof, preferably 1-methylimidazole or pentetrazol, as a catalyst to prepare azoxystrobin, which can greatly reduce dimer impurities, improving the purity of the product. Moreover, the catalyst is cheap and easy to be synthesized, and can significantly reduce production costs, thus having good industrial application value.

The utility model relates to the technical field of waste gas treatment, in particular to an electric furnace waste gas purification device for shell casting forming, which comprises a purification box, a dust removal cavity and a purification cavity are arranged in the purification box, a conversion barrel is rotatably connected in the purification cavity through a rotating shaft, and placing grooves penetrating through the top and bottom sides of the conversion barrel are symmetrically arranged on two sides of the rotating shaft in the conversion barrel. The placement groove is filled with activated adsorption carbon, an upper fixing sleeve is fixedly connected to the top in the purification cavity, and a communicating pipe fixedly communicates between the upper fixing sleeve and the dust removal cavity; according to the utility model, the two groups of placing grooves symmetrically arranged in the conversion cylinder are matched with the conversion cylinder to rotate by 180 degrees, so that the active adsorption carbon is quickly switched, and the waste active adsorption carbon can be synchronously discharged and replaced in the waste gas treatment process, so that the non-stop treatment of the electric furnace during the casting of a shell is realized, and the production efficiency is improved. The production efficiency and the waste gas treatment efficiency during shell casting are improved.

The utility model relates to the technical field of temporary road plates, and discloses a prefabricated assembly type reusable temporary road plate for constructional engineering, which comprises a plate body, the right side of the plate body is connected with an insertion block, the left side of the plate body is provided with a limiting groove, and the bottom surface of the plate body is provided with an insertion groove. According to the prefabricated assembly type reusable temporary road plate for constructional engineering, limiting of the adjacent road plates can be achieved through cooperation of the insertion blocks and the insertion grooves, the problem that the temporary road plates are dislocated due to external force during use is avoided, meanwhile, fixing of the adjacent road plates can be achieved through cooperation of the clamping blocks and the limiting grooves, and the practicability of the prefabricated assembly type reusable temporary road plate is improved. And the use stability of the temporary road plate is improved.

The utility model discloses an aquatic product fresh-keeping device, relates to aquatic product fresh-keeping technical field, including box body and cooling component, box body both sides are provided with the handle, the cooling component is provided in the box body, the cooling component includes second cooling plate, stay bar, partition plate, limit block, slider, bolt, spring and location hole, and the second cooling plate, stay bar, partition plate, limit block, slider, bolt, spring and location hole are located in the box body. And a second cooling plate is slidably connected into the box body, and a supporting rod is arranged at the top of the second cooling plate. According to the aquatic product fresh-keeping device, through the arrangement of the cooling assembly, the inner space of the box body can be separated through second cooling plates and partition plates, so that fishes can be separated independently, the situation that the overall cooling effect is affected due to the fact that the fishes are stacked together is avoided, meanwhile, the second cooling plates are horizontally distributed, the two sides of the fishes can be cooled, and the cooling effect is improved. And the cooling area is larger, and when the density of the air flow with the temperature increased rises, the air flow can make full contact with the first cooling plate or the second cooling plate above the first cooling plate or the second cooling plate.

The utility model discloses a punching device for sheet metal working, which relates to the field of punching dies and comprises a lower die with a convex inner cavity inside, a fixing flange is integrally formed on the lower portion of the periphery of the lower die, a replacement part is detachably connected to the upper portion of the inner cavity of the lower die, limiting blocks protruding outwards are formed on the periphery of the replacement part at equal intervals, and the limiting blocks are connected with the fixing flange. An accommodating groove for accommodating the replacement part and the limiting block is formed in the upper part of the inner cavity of the lower die; an ejection mechanism is arranged in the lower die and used for rapidly ejecting the replacement part which is seriously abraded out of the containing groove. And the bottom end of the replacement part is provided with a screw hole which is sunken upwards. According to the punching die, by arranging the replacement part, the part of the punching die can be independently replaced, the replacement cost is relatively low, and meanwhile the problem that the replacement part is not easy to take out due to the fact that the friction force between the replacement part and the containing groove is too large can be solved through cooperation with the ejection mechanism.