7results about How to "Control quantity" patented technology

The utility model relates to the technical field of hairdressing equipment, in particular to a rotary adjustable hair curling rod which comprises a shell, a hair curling assembly, a rotary shifting piece and an upper limiting block. The gear set of the rotary base is meshed with the driven gear, and the second gear teeth of the rotary shifting piece are meshed with the gear set, so that accurate rotation control over the curling iron is achieved, the curling angle and the curling direction can be adjusted more flexibly and stably, the curling effect and the user experience are improved, and the practicability is high. The heating piece is guided through the first moving guide rail and the second moving guide rail, the stability and accuracy of the heating piece in the hair curling process are guaranteed, the problems that a traditional hair curling rod is uneven in heating and unsmooth in hair curling are solved, the hair curling quality is effectively improved, and the upper limiting block and the top cover improve the structural stability of the hair curling rod and improve the hair curling efficiency. And in addition, the use safety is improved, the heating piece is prevented from accidentally falling off or shifting, and safer and more reliable use experience is provided for a user.

This invention discloses a method for controllable preparation of nanoparticles using a multi-channel microreactor. The method utilizes a microchannel reactor to segment droplets and prepare quantitatively synthesized nanoparticles with controllable particle size. The invention employs capillary action to draw the reaction solution into the microchannel, segmenting one or more droplets (each droplet into 10-100 portions). By changing the width of the microchannel, controllable preparation of nanoparticles within a small range (±3 nm) can be achieved; by changing the length of the microchannel, controllable preparation of nanoparticles within a large range (±10-30 nm) can be achieved. Furthermore, the reactor structure of this invention is simple, enabling highly precise and quantitative synthesis of various nanoparticles. Compared to large-scale reactors, the miniaturization of the synthesis reaction in this invention effectively reduces energy waste and safety hazards, making it highly valuable for applications in safe chemical engineering, green chemical engineering, high-efficiency chemical engineering, microchemical engineering, and precise reaction monitoring.

This utility model relates to the field of feed feeding technology, providing a feeding device suitable for the initial feeding of fish fry in factory-farmed aquaculture. The device includes a base, a feed storage bin, a spotlight, a conduit, a suction pump, and a particle detector. The feed storage bin is located on the base and holds the feed; the spotlight has a through-hole; the first end of the conduit connects to the feed storage bin, and the second end of the conduit connects to the spotlight through the through-hole; the suction pump is located in the conduit and is used to draw feed to the through-hole; the particle detector is located in the conduit and is used to detect the amount of feed flowing through. This utility model, by setting up a feed storage bin and a spotlight connected by a conduit, allows feed to flow through the conduit to the through-hole; the suction pump in the conduit regulates the flow rate of the feed to control the feeding speed; and the particle detector accurately detects the amount of feed flowing through, improving feeding accuracy and benefiting the fry rearing stage; it can control the feeding speed and quantity, reduce labor costs, make operation more convenient, and improve the survival rate of fry rearing.

The application belongs to the technical field of solid oxide fuel cell anode catalyst, and particularly relates to a preparation of a multi-doped layered perovskite anode and application thereof in ammonia solid oxide fuel cells. x Ba 1–x Mn 1–y TM y O 3–δ (0.4<=x<=0.6, 0<=y<=0.3, TM=Co, Fe, Cu), the precursor is phase changed under a reducing atmosphere to form a PrBaMn2O 5+δ layered perovskite with rich oxygen vacancies, and the doped transition metal is precipitated in the form of an alloy and anchored on the surface of the layered perovskite. The anode catalyst has a simple synthesis method, low cost, rich and flexible adjustable element composition. The obtained anode catalyst is made into a slurry and then assembled into a solid oxide fuel cell single cell sheet. The solid oxide fuel cell prepared by the application has good power output, electrical conductivity and stability at medium and high temperatures.

The utility model provides a feed additive granule surface coating polishing all -in -one, including body, coating drum, translation plate, reciprocating drive mechanism, liquid supply mechanism. The upper end of coating drum has the feed inlet, is provided with the shower nozzle on the translation plate, every shower nozzle all sets up to the coating drum inside towards, reciprocating drive mechanism drives translation plate to move back and forth along the straight line at the feed inlet position. The shower nozzle is driven under the translation plate and carries out reciprocating spraying work to the inside of the drum at the feed inlet, and the dynamic spraying structure is formed with the cooperation of liquid supply mechanism, and the shower nozzle can uniformly spray the spraying liquid to the granule surface of tumbling in the coating drum in the movement process. Compared with traditional fixed shower nozzle structure, the spraying coverage is significantly expanded, the spraying "blind area" and the repeated spraying area are effectively reduced, the utilization rate of the spraying liquid and the uniformity of the granule surface coating are improved, and the consistency and stability of the product quality are improved.

The application relates to the technical field of aluminum alloy ingot melting furnaces, in particular to an aluminum alloy ingot melting furnace capable of quantitative discharging, which comprises a melting furnace, a mounting frame, a driving mechanism and a discharging mechanism. The mounting frame provides support above the melting furnace, the driving mechanism drives the melting furnace to swing, and the discharging mechanism comprises a communication shell and a pushing groove frame. The communication shell is internally provided with a communication cavity, and the pushing groove frame is arranged in the communication cavity. The discharging mechanism realizes quantitative discharging through gear transmission and the like, solves the problem of inaccurate discharging of the existing equipment, improves production stability and efficiency, and reduces cost and labor intensity.

This utility model discloses a batching device for precisely proportioning raw materials for kidney-tonifying moxibustion mud, including a support frame and a connecting frame. The connecting frame is installed on the outer wall of the support frame, and a first fixed frame is symmetrically installed inside the support frame. A support base is installed at the top of the connecting frame, and a rotating shaft is movably installed at the top of the support base. A rotating disk is installed at the top of the rotating shaft, and multiple sets of equally spaced discharge hoppers are installed inside the rotating disk, extending to the outside of the rotating disk. A discharge valve is installed at the bottom of each discharge hopper. This utility model not only enables convenient and precise proportioning of multiple sets of kidney-tonifying moxibustion mud raw materials, facilitating weighing-controlled feeding and improving the accuracy of proportioning multiple sets of kidney-tonifying moxibustion mud raw materials, but also facilitates convenient transportation of the proportioned kidney-tonifying moxibustion mud raw materials, improving the efficiency of proportioning and transportation.