33results about How to "Increase the lateral area" patented technology

The invention discloses a method for improving the segregation and shrinkage of the center of a square and round billet; when a cast billet is cooled, the growth rate of solidified shells of the cast billet in an inner arc direction and an outer arc direction is relatively higher while the growth rate of solidified shells of the cast billet in a left side direction and a right side direction is relatively lower through a cooling method according to which the cooling strength in the inner arc direction and the outer arc direction of the cast billet is consistent, the cooling strength in the left side direction and the right side direction is consistent but the cooling strength in the inner and the outer arc directions is higher than that in the left and the right side directions, so that a liquid core on a solidified tail end of the cast billet is a rectangular area which is squashed in the inner and the outer arc directions and elongated in the left and the right side directions. According to the method for improving the segregation and shrinkage of the center of the square and round billet, because segregation solute elements and the distribution methods of solidification and shrinkage are controlled, the center of the cast billet is prevented from being segregated and enriched in a small area, so that the segregation and shrinkage of the center of the square and round billet and other continuous casting billets with similar width and thickness of cross sections are effectively improved, the effect is significant and stable, the use is simple and easy, the cost is low, and the cost performance in implementation is high. Simultaneously, a dynamic slight compression technology in continuous casting and a tail end electromagnetic stirring technology can be implemented.

The invention discloses a multi-rotor-wing auxiliary pollination machine for producing seeds and increasing the yield. The machine comprises a multi-rotor-wing aircraft, and the multi-rotor-wing aircraft is characterized in that two air blowing fans are assembled at the tail of a rack of the multi-rotor-wing aircraft through a connection frame, wherein the air outlet direction of the two air blowing fans is 45-degree downwards relative to the plane of a machine body and 45-degree outwards relative to the direction of the machine tail. When the multi-rotor-wing auxiliary pollination machine for producing the seeds and increasing the yield flies, generated downward spinning air flow can reach force 5-6 wind power, stamens of corn male plants can be shaken forcefully, pollen in the stamens is shaken off and made to fly away, when the multi-rotor-wing machine flies over the corn male plants, air flow generated by the tail of the machine goes up to drive the pollen to spread toward the two sides of the flight direction, and thereby the transverse distance and area of pollen spreading are increased, so that the pollen can adhere to female plants more uniformly, the pollination rate of the female plants is raised, the traditional plantation mode that one corn male plant pollinates three corn female plants can be improved to the extent that one corn male plant pollinates ten to fifteen corn female plants, the pollination rate is raised, pollination quality is improved, and the purposes of increasing the yield and enhancing the effect are achieved.

The invention provides a single-layer MXene colloid and a preparation method and application thereof. The method includes the following steps: S1, dissolving anhydrous LiCl in an inorganic acid to obtain a solution A; S2, adding a precursor of MXene to the solution A, And carry out the reaction at 50~60 ℃; S3, add the reaction solution of S2 into the hydrochloric acid solution and then react; after the reaction is completed, remove the lower layer sediment and repeat adding water and centrifugation, until the pH of the upper layer clear liquid is 5; S4, to S3 Ethanol is added to the lower layer of the precipitate, and ultrasonication and separation are performed; then the lower layer of sediment is collected, water is added, and then ultrasonication and separation are performed, and the upper layer liquid is collected to obtain a single-layer MXene colloid. The above monolayer MXene colloids were applied to selectively adsorb uranyl ions. The method is simple to operate, the prepared monolayer MXene colloid has good stability, and has the performance of efficient and selective removal of uranyl.

The invention discloses a screw type atomization-spraying dust precipitating device applicable to atomization of water or water-air and other media with relatively low viscosity. An upper end cover of the device adopts a cylindrical structure, an external thread is arranged at the upper end part, an air inlet is horizontally formed in the middle of the upper end cover and adopts a bolt hole structure, a screw valve is arranged in the center of the upper end cover, and the screw valve and the center of the upper end cover are located on the same axis; a taper hole is formed in the center inside the screw valve and connected with the air inlet, through holes are formed in positions equally spaced from the periphery of the taper hole and are water inlets, a plurality of screw grooves are arranged on the outer edge of the screw valve and have rectangular sections, and the length-width ratio of the rectangles is gradually increased; the upper end cover and an oscillation cavity at the lower end are connected through bolts; the lower end of the oscillation cavity is connected with a connecting piece through threads, the connecting piece adopts a U-shaped groove structure, a bulge is arranged in the middle of the U-shaped groove, and a horn-shaped spray head is arranged in the center of the bulge. The device is simple in structure, easy to control and adjust, good in atomization effect, high in practicability, safe and reliable.

The invention relates to the technical field of synthetic material processing devices, and discloses a reaction device for producing and processing synthetic materials. The output shaft of the motor is fixedly connected with a rotating shaft through a coupling, the bottom end of the rotating shaft is fixedly installed with a lifting mechanism, the outer wall of the casing is fixedly connected with a connecting piece, and one side of the connecting piece is provided with a bolt, The inner side wall of the body is fixedly connected with a slide rail, the reaction device for the production and processing of synthetic materials, the shape of the mixing spring rubber rod-shaped stirring roller is relatively complex, the power is transmitted from the top of the mixing spring to the bottom, and the mixing spring can twist, At the same time, due to the extrusion of the mixing spring, the shape of the torsion mixing spring will become random, so that the internal raw materials will undergo more complex position changes during the stirring process, which will increase the contact rate of the internal raw materials and better integrate the internal materials. The raw materials are stirred.

The invention discloses a ski structure adopting an extended wind resistance brake, relates to the technical field of outdoor sports equipment, and solves the problem that the currently used multi-person skiing device mainly uses a support rod to decelerate and brake. The problem that it is difficult to fully decelerate only by the support rod. A snowboard structure using an extended wind resistance brake includes a board body; the board body also includes a side groove, a rear board, and an inner slider; both sides of the board body are provided with side grooves, and the side grooves are The interior is equipped with a resistance plate that rotates through a hinge link, and the position of the hinge link is located on the rear side of the side groove; the width of the resistance plate is smaller than the width of the side groove, and the resistance plate is provided to provide the skis with wind resistance expansion and deceleration. Effectively, through the handle and the linkage slider, the resistance board can be quickly controlled to expand to both sides, and the resistance board can be used to increase the lateral area of ​​the ski, providing a deceleration effect for the snowboard.

The invention relates to a circuit breaker. The circuit breaker comprises a moving contact, a static contact, an operating mechanism, an arc extinguishing system and a release. The arc extinguishing system is arranged on one side of a connection portion of the moving contact and the static contact. The moving contact is connected to the operating mechanism in a linkage mode. The operating mechanism is connected to the release through a draw bar in the linkage mode. The static contact comprises a static contact point bearing portion, a wiring portion used for introducing a current and a bending portion used for connecting the static contact point bearing portion and the wiring portion. An upper side surface of the static contact point bearing portion is provided with a static contact point. The moving contact comprises a moving contact seat, a moving contact sheet, a moving contact point and a moving contact shell. The moving contact seat is installed in the moving contact shell. A tail end of the moving contact sheet is hinged to the moving contact seat. The moving contact point is arranged on a top end of the moving contact sheet. The moving contact shell forms an opening above the connection portion of the moving contact sheet and the moving contact seat. When a heavy current passes through, the moving contact is bounced and disconnected because of a Lorentz force so that a segmentation capability of the circuit breaker is increased.