54results about How to "Extrusion realization" patented technology

The invention particularly relates to an efficient environment-friendly reactive extrusion integrated continuous processing technology of urea aldehyde and derivatives thereof. The technology specifically comprises the following steps: firstly, preparing a hydroxymethyl urea solution, then feeding the hydroxymethyl urea solution into a reactive extrusion all-in-one machine, adding or not adding phosphate or other medium trace element fertilizers, starting a reaction unit of the reactive extrusion all-in-one machine to react, and meanwhile, starting a vacuumizing devolatilization unit to remove moisture in a reaction system; and after the reaction is finished, starting an extrusion unit of the reaction and extrusion all-in-one machine, extruding to obtain a strip-shaped product, and drying and granulating to obtain a finished product. The extrusion unit and the reaction unit are integrated, forced discharging of the output end of the reaction unit is achieved, and then continuous production of urea aldehyde is achieved. Besides, a vacuumizing devolatilization unit is additionally arranged on the reaction extrusion all-in-one machine so that reaction extrusion of raw materials with different solid contents can be realized, the nutrient composition and content of the final product are flexible and variable, and the special urea aldehyde meeting the nutrient requirements of different crops is prepared.

The invention discloses a pneumatic single droplet generator, belonging to the technical field of fluid mechanics, comprising a generator body, a joint, a connecting piece and a liquid chamber; the joint includes a gas inlet, a communication port and a gas outlet; the connecting piece The lower end is connected to the liquid chamber, and the bottom of the liquid chamber is provided with a pinhole; the pulse gas is passed into the gas inlet, and the pulse gas enters the liquid chamber along the connector through the connecting piece, and the liquid in the liquid chamber is impacted by the pulse gas After being extruded from the pinhole, the pulse gas is discharged from the gas outlet to generate a negative pressure in the liquid cavity, and then the liquid is sucked back into the liquid cavity to realize the extrusion of a single droplet. In the present invention, the liquid is extruded from the pinhole under the impact by feeding the pulse gas, and at the same time, the pulse gas is discharged to generate a negative pressure in the liquid container, and the liquid is sucked back into the liquid cavity to realize the extrusion of a single droplet; and through The electromagnetic valve is controlled to realize the reasonable adjustment of the pulse gas pressure and pulse gas action time in the generator.

The invention relates to an automatic multi-color pattern mounting head based on motor control. The pattern mounting head comprises motors, a driving device, a standard mounting plate connected with automated equipment, a planet disc provided with a transmission mechanism, multiple material cylinders and pattern mounting nozzles, and the material cylinders and the pattern mounting nozzles are connected with the planet disc. The three motors are installed on the mounting plate, the motors separately control the planet disc through transmission mechanisms to drive the multiple material cylindersto conduct orbital revolution, the gear transmission mechanisms control rotation of the material cylinders, and a linear stepping motor drives a feeding shaft to control feeding of the material cylinders. The planet disc is provided with a center drive gear and multiple driven gear mechanisms, and each driven gear is connected with one set of material cylinders and pattern mounting nozzles; the multiple driven gears, material cylinders and pattern mounting nozzles form a multi-color material bin, and the material bin is rotated to or away from the lower end of the feeding shaft through orbital revolution. The material cylinders and the pattern mounting nozzles are connected through standard connection parts, and the number of the material cylinders and the colors of coatings placed in thematerial cylinders can be set by a user. According to the automatic multi-color pattern mounting head, the number and colors of the material cylinders can be self-defined, and the working efficiencyof pattern mounting is effectively improved.

The present invention relates to the technical field of 3D printing equipment, and provides a 3D printer interlayer reinforced composite material adding device and a 3D printer nozzle. The board is set outside the bottom drum and the spatula mouth of the 3D printer; the circulating water inlet and the circulating water outlet are set on the constant temperature water integrated board, and a constant temperature water circulation is set between the constant temperature water integrated board and the bottom drum Passage; the grinding plate is provided with a roller ring, the grinding plate is arranged at the outlet of the spatula mouth of the 3D printer, and the roller ring is docked with the outlet of the spatula mouth; between the sealing backing plate and the grinding plate and the spatula mouth The first layer of slurry channel is set; the second layer of slurry channel is set between the constant temperature water integration plate, the grinding plate and the spatula nozzle; the first layer of slurry channel and the second layer of slurry channel are independent of each other. The invention can evenly spread the reinforced composite material slurry on the surface of the extruded 3D printed concrete.

An expression kit (2) for use in a breast pump device (1) for extracting breast milk from a human breast comprises a breast pump body (20) having a first pressure chamber (21), a second pressure chamber (22), and a membrane portion (5) separating the first and the second pressure chamber (21, 22) from each other. The membrane portion (5) is configured to form a barrier between the first and the second pressure chamber (21, 22) for preventing leakage of human breast milk from the second pressure chamber (22) to the first pressure chamber (21), yet to allow for air exchange between the first andthe second pressure chamber (21, 22), wherein the membrane portion (5) is hydrophobic and has the shape of a solid sheet being provided with holes (50) which are configured for rendering the sheet permeable to air and impermeable to liquid.

The invention discloses a foodstuff extruding device, comprising two conical containers which are nested with each other and are used for containing the foodstuff, the conical point of the conical container is provided with a through food outlet; the conical point part of an outer container is internally provided with a conical support used for fixing an inner container, the support is internallyprovided with a retaining plate, the retaining plate is fixedly connected with the inner container by virtue of a fixing hole and a nut, the foodstuff outlet of the inner container corresponds to thefoodstuff outlet of the outer container, the interior of the inner container can be divided into a plurality of independent spaces by division bars to place different foodstuffs, and two or more thantwo fluid and semi-fluid foodstuffs stored in the inner container and the outer container are extruded by virtue of the foodstuff gate of the support under the action of extrusion, thus colourful modelling of foods or making of sandwich foods are convenient.