37results about How to "Improve spreading uniformity" patented technology

The application belongs to the field of medical catheters, in particular to a hydrophilic lubricating coating for the surface of medical catheters. In parts by weight, the raw materials for the preparation of the hydrophilic lubricating coating on the surface of the medical catheter include 20-40 parts of polyvinylpyrrolidone, 10-20 parts of polyvinyl alcohol, 10-20 parts of polyethyleneimine, and 5-15 parts of hydroxyethyl starch , 5-15 parts of cross-linked polyacrylic resin, 10-20 parts of maleic anhydride grafted SEBS and 40-60 parts of solvent; the number average molecular weight of the polyvinylpyrrolidone is 100-1.76 million; the average polyvinyl alcohol The degree of polymerization is 2400-2500, and the degree of alcoholysis is 98-99mol%. The hydrophilic lubricating coating for the surface of the medical catheter provided by the application has good bonding performance to the base material of the medical catheter, and the hydrophilic lubricating coating has good fluidity, which improves the lubricity of the medical catheter after wetting.

The invention discloses a deicing agent distributing device and a deicing distributing vehicle equipped with the deicing agent distributing device, which comprises a material guide system, and the feeding end of the material guide system is respectively connected with a spreader silo and a pre-wet liquid supply device to respectively guide solids Snow melting agent and pre-wet solution, the material guide system is connected with the drive assembly, and the drive end of the drive assembly is connected with the spreading disc group, and the spreading plate set is set corresponding to the discharge end of the material guide system to receive the material exported by the material guide system. solid snow melting agent and pre-wet solution, and the solid snow melting agent and pre-wet solution are fully mixed to form the pre-wet snow melting agent. It also includes a control system connected to the drive assembly, the control system is used to control the action of the drive assembly and then rotate the spreading disc group, so that the pre-wet deicing agent on the spreading disc group is evenly thrown outward along the tangential direction of the spreading disc group, The control system is also used to detect the rotation speed of the spreading disc set and the ground clearance height of the spreading disc set, and obtain the spreading width of the pre-wet deicing agent according to the rotation speed and the ground clearance height.

The invention relates to a multistage straw fine crushing and dispersing field returning device and belongs to the technical field of agricultural machinery. The multistage straw fine crushing and dispersing field returning device comprises a housing (1) and a gearbox (3), wherein the housing (1) comprises an upper cutter distance adjusting groove (1141), a lower cutter distance adjusting groove (1142), a hydraulic rod support rod (115), a dispersing accelerating device mounting hole (117), a dispersing adjusting device mounting hole (1142), a cutter distance adjusting device (6), a hydraulicrod (7), a cutter distance adjusting device support rod (8), a straight-cutter crushing device (10), a dispersing accelerating device (11) and a picking crushing device (12). The multistage straw fine crushing and dispersing field returning device has the advantages that the fixed cutter of a traditional crushing field returning machine is changed into a rotary straight cutter, so that energy-saving straw cutting is achieved; by a hydraulic device, the distance between a 'Y'-shaped crushing cutter and the straight cutter can be adjusted in real time according to the straw distribution conditions in a field, a better straw crushing effect is achieved, and the probability that the device is blocked by the straw can be lowered at the same time.

The invention discloses a novel uniformly flowing liquid lithium limiter structure applied to a fusion device, which comprises a collection box, wherein the bottom end of the collection box is provided with double built-in electromagnetic pump, a limiter base is arranged above the collection box, the base of the limiter base is provided with a heating wire and a thermocouple, the outer surface ofthe inner side of the limiter base is clamped with supply pipes connected with liquid lithium, a pump channel is welded between two electrodes in the double built-in electromagnetic pump, the pump channel is communicated with the supply pipes above, the top of the limiter base is provided with a distribution box, and the distribution box is integrally molded and has a structure with uniformly distributed distribution holes. The novel uniformly flowing liquid lithium limiter structure can better achieve supply of the liquid lithium by using a device toroidal field and the additional direct current driving double built-in electromagnetic pump structure, can realize uniform distribution of the liquid lithium through the integrally molded distribution box, and can effectively improve the spreading uniformity of the liquid lithium by using the limiter base with good lamination and a micro-capillary structure perpendicular to the flowing direction of the liquid lithium.

A vehicular spreader of a solid road binder comprises a storage bin, a material conveying mechanism, a material distributing mechanism, a spreading mechanism and a dust removal device, wherein the storage bin is of a square sealed box structure, openable and closable charging holes are formed in the top of the storage bin, the material conveying mechanism is in seal connection with the low part of the storage bin, and is corresponding to a discharge hole in the lower part of rear end of the storage bin; the rear end of the storage bin is in seal connection with the dust removal device additionally; the lower end of the dust removal device is in seal connection with the material distributing mechanism, the position of the material distributing mechanism directly faces an output end of the material conveying mechanism, and the spreading mechanism is in seal connection with the lower end of the material distributing mechanism; the vehicular spreader has the characteristics of being reliable in performance, reasonable in structure, easy to operate and maintain, environment friendly in construction and the like.

The application relates to a soil plowing and fertilizing method, which belongs to the technical field of soil improvement; it includes the following steps: step S1, fertilizing: using a tractor-driven fertilizer spreader to fertilize the farmland, so that the organic matter in the farmland soil after fertilization Content ≥ 1.5%; step S2, plowing: use a tractor-driven rotary tiller to plow the farmland after fertilizer spreading, and use the "three plows and three harrows" process to make the soil in the farmland finely divided , and make the soil and organic matter products or biological fertilizer products evenly mixed; wherein, the fertilizer spreader includes a frame, a material storage mechanism, a feeding mechanism and a fertilizer spreading mechanism, the material storage mechanism is installed on the frame, and the feeding mechanism is installed on the frame and located at Below the material storage mechanism, the fertilizer spreading mechanism is located below the discharge end of the feeding mechanism. The application has the advantages of uniform fertilization and low transportation cost.

The invention relates to a method for laser deep penetration-brazing connection of a dissimilar material. The method comprises the steps that a laser welding head, a high-pressure gas column nozzle and a protective gas spray pipe can move relative to a base material, when the backside temperature of the base material reaches or exceeds the gasification temperature value of the base material, the laser welding head and the high-pressure gas column nozzle are rotated, the laser welding head is made to incline relative to the upper surface of a workpiece, the high-pressure gas column nozzle is vertically aligned with the upper surface of the workpiece, a high-pressure gas column nozzle gas supply valve is controlled, and an inert gas column sprayed by the high-pressure gas column nozzle penetrates a small welding hole. According to the method for laser deep penetration-brazing connection of the dissimilar material, the high-pressure tiny gas column is used for assisting in maintaining the small hole, uniform distribution of laser energy in the depth direction of the small welding hole is optimized, it is avoided that the laser energy overflows and is lost, and groove-free laser deep penetration-brazing connection of the dissimilar material is achieved.