14results about How to "Jet stability" patented technology

The wiper arm nozzle comprises a carrier and an insertion piece, a water inlet pipe is arranged at one end of the carrier, a clamping groove allowing the insertion piece to be clamped in is formed in the other end of the carrier, a plurality of water outlets are formed in the edge of the same side of the insertion piece in the circumferential direction, and the water outlets communicate with the water inlet pipe; openings are formed in the positions, corresponding to the water outlets, of the carrier. The method has the effect of reducing the processing difficulty.

The present invention relates to a processing liquid nozzle, comprising: a main body part in which a mixing space for mixing a processing liquid therein, a first inlet formed at the upper end of the main body part so as to communicate with the mixing space and into which a first processing liquid flows, a second inlet formed at the lower end of the main body part so as to communicate with the mixing space, and an ejection port formed at the upper end of the main body part and into which a second processing liquid flows; a second inflow port formed in a side surface of the body part so as to communicate with the mixing space and through which a second processing liquid flows into the mixing space, and an ejection port formed in a lower end of the body part so as to communicate with the mixing space; and a rotational flow guide part which is vertically provided in the mixing space so that the upper and lower ends thereof face the first inflow port and the injection port, respectively, and which comprises a spiral guide having a spiral groove formed in the outer peripheral surface thereof.

The present application relates to the field of micro-droplet jet and inkjet technology, and particularly relates to an acoustic driving micro-droplet jetting method and device, which comprises: stably delivering a liquid to be jetted to a nozzle micro-hole assembly; generating an ultrasonic signal, which drives an ultrasonic transducer after power amplification; driving the resonant acoustic cavity nozzle through the ultrasonic transducer to form a stable sub-wavelength scale standing wave acoustic field in the cavity; using the acoustic radiation force to act on the liquid column at the end of the nozzle to realize the non-contact separation and directional jetting of the droplet; and moving the nozzle on the substrate through a multi-axis motion platform to realize the deposition of the droplet according to a predetermined track. The method and device avoid the nozzle blockage and other problems caused by the high viscosity or high solid content of the liquid in the traditional piezoelectric or electrohydrodynamic driving mode; can significantly improve the control accuracy of the droplet size and jetting speed, have excellent fluid adaptability and jetting stability, and are particularly suitable for the precise deposition and patterning jetting of complex fluids such as photoresist, metal paste and functional nanomaterials.

The utility model discloses a kind of obstetric flushers, including liquid storage tank, connecting pipe, extension piece, direction-changing arm and spray head, liquid storage tank includes the tank body for storing cleaning fluid and is set to the pressing portion of tank body tail end, pressing portion is corrugated structure, with good elasticity and resilience, tank body opening end is connected connecting pipe and extension piece in turn by thread, extension piece one end is equipped with rotatable direction-changing arm, direction-changing arm one end is equipped with locating head and input hole, the other end is connected with spray head, liquid can be in palm pressing pressing portion after via passage and input hole into direction-changing arm and from spray head to spray to realize flushing function, the extension piece outside is provided with accommodating groove for folding storage direction-changing arm, connecting pipe outside is equipped with antiskid structure to facilitate operation, structure design is reasonable, connection is stable, spray direction is adjustable and convenient to store.

The utility model discloses a welding ball net rack node small-included-angle welding line welding device, and relates to the technical field of net rack welding. Comprising a gun body, one end of the gun body is provided with a gas spraying assembly for spraying argon to a weld joint, the end, extending into the gun body, of the gas spraying assembly is communicated with an annular pipe, the annular pipe is fixedly connected and communicated with a gas supply guide pipe, a wire feeding assembly for providing a tungsten electrode is arranged in the gun body, and the welding end of the tungsten electrode and the gas spraying assembly are arranged on the same side of the gun body. The outer wall of the gun body is fixedly connected with a handle. The end, away from the annular pipe, of the air supply guide pipe penetrates through the handle and extends out of the handle. The air injection assembly comprises symmetrically-arranged air outlet parts. According to the welding device, the tungsten electrode can effectively abut against a welding seam at the position of a small included angle, meanwhile, argon can be sprayed to a welding area of the tungsten electrode through the two gas outlet parts, stable argon spraying is effectively provided for the welding position, and the small included angle formed between a rod piece and a welding ball can be effectively welded through the tungsten electrode.

The invention provides a curved surface array electrofluid nozzle control method, and relates to the technical field of electrofluid jet printing, and the method comprises the steps: processing a to-be-jet-printed image, and generating dot matrix data; nozzle opening and closing control information is generated according to the dot matrix data; generating a multi-channel nozzle driving control signal according to the nozzle opening and closing control information; in the process of outputting a multi-channel nozzle driving control signal to drive a target nozzle, under the unified space kinematics constraint and the injection time sequence constraint, controlled injection of the target nozzle under the curved surface condition is achieved by cooperatively executing track generation, injection trigger control and interference constraint control. The high-precision jet device can meet the high-precision jet requirement under the complex curved surface condition.

The application provides a water-soluble support material and a preparation method and application thereof, and relates to the technical field of 3D printing materials. The water-soluble support material comprises, in terms of mass fractions, 30-45 parts of polyether-based diisocyanate, 30-40 parts of a water-soluble monofunctional monomer, 5-20 parts of a water-soluble organic solvent, 5-15 parts of an emulsifier and 1-10 parts of a photoinitiator. The polyether-based diisocyanate contains free isocyanate groups, can react with water to generate gas in a water washing process, construct a pore channel in situ in the support structure, significantly accelerate the penetration and dissolution of water, and realize the rapid removal of the support material. Meanwhile, the water-soluble support material has excellent inkjet adaptability, ensures stable jetting in the printing process, good interlayer bonding, clear and complete shaping, and is suitable for the synchronous support construction and efficient post-processing of complex models in inkjet 3D printing.

The utility model relates to the technical field of spinning devices, in particular to an antibacterial polyester yarn coaxial electrostatic spinning device. Comprising a material storage tank, a bottom plate is fixedly connected to the bottom of the material storage tank, a material pushing rod is arranged in the material storage tank in a sliding mode, a spinning needle head is fixedly connected to the material storage tank, a second vertical plate is fixedly connected to the bottom plate, and a material collecting wheel is rotationally connected to the second vertical plate. The adjusting wheel is rotated to enable the selected adjusting groove to be attached to the spinning needle head, and as the adjusting groove moves towards the spinning needle head, the spring resets to push the semicircular limiting block to move towards the semicircular limiting groove along the sliding column, so that the adjusting wheel abuts against the fixing block, and when the device adjusts the adjusting groove with the current thickness, the adjusting groove with the current thickness is adjusted; according to the spinning device, the adjusting wheel and the spinning needle tube can be limited, so that the spinning needle tube is more stable when spraying spinning through the adjusting groove, the production effect of the device is improved, and the device is more convenient to adjust the spinning thickness.

The invention provides a thermal power plant boiler ignition oil control device which comprises an oil tank, a splitter plate and an oil control assembly, an oil storage cavity is formed in the oil tank, and the oil storage cavity is provided with an oil inlet and an oil outlet; the splitter plate is arranged in the oil storage cavity, the splitter plate is in an umbrella shape, and a plurality of splitter holes are formed in the splitter plate at equal intervals; the oil control assembly comprises an oil spray nozzle located at the oil outlet, a plugging head and an elastic piece are arranged in the oil spray nozzle, one end of the elastic piece is connected with the plugging head, the other end of the elastic piece is connected with the oil spray nozzle, and the plugging head is used for plugging or opening the oil outlet. According to the boiler ignition oil control device for the thermal power plant, accurate control and efficient utilization of fuel oil can be achieved, and the ignition stability and the combustion efficiency of the boiler are improved.

This application relates to a river ecosystem management device, belonging to the technical field of river ecological restoration and environmental protection. It includes a float, with a deployment mechanism on the outside of the float, a moving mechanism on the top of the float, and a catching mechanism on the bottom outer side of the float. The deployment mechanism includes a storage tank, the outside of which is opened inside the float. An extraction tube is fixedly connected to the top inner side of the float, and a retrieval tube is slidably connected inside the extraction tube. A docking assembly is fixedly connected to the top outer side of the extraction tube, and a metering tube is fixedly connected to the top of the retrieval tube. This application features a vertically movable retrieval tube that, when sliding within the extraction tube, utilizes the principle of pressure difference to extract the treatment material from the storage tank. The material is extracted to the metering tube for volume control, thereby achieving the effect of stably spraying the treatment material into the river after quantitative control.

A reducing agent injection quantity accurate control device based on an SCR system is characterized in that a reducing agent storage box (1) is communicated with a supply pump (2), the supply pump (2) is communicated with a reducing agent pressure stabilizing pipeline UR and a pressure stabilizing valve (33), a plurality of branches are led out of the reducing agent pressure stabilizing pipeline UR, each branch is provided with a flow meter (4), a reducing agent supply electromagnetic valve (10) and an injection regulating valve (5) and then connected with a spray gun (6), and the spray guns (6) are inserted into an exhaust pipeline (7); the compressed air pressure stabilizing pipeline AR is provided with pressure regulating valves (34) which are communicated with a plurality of branches led out of the reducing agent pressure stabilizing pipeline UR in a one-to-one correspondence mode, the compressed air pressure stabilizing pipeline AR is communicated with a compressed air electromagnetic valve (8) and a spray gun (6), and a spray gun purging electromagnetic valve (9) is further connected between the compressed air pressure stabilizing pipeline AR and the reducing agent pressure stabilizing pipeline UR. The device can ensure the pressure stability of the reducing agent and the auxiliary injection compressed air on the basis of effectively reducing the equipment cost, so that the injection precision and the atomization effect are ensured.

The invention relates to the field of specific concrete production, and discloses a surrounding rock reinforcing and enhancing method under excavation disturbance of a tunnel in a cold region. The method comprises the following steps that S1, concrete is mixed, and meanwhile a coagulant with the corresponding proportion is proportioned and placed into the concrete; s2, the proportioned concrete enters an auxiliary device to be subjected to earlier-stage treatment, and the initial spraying temperature is reached; s3, warm water maintenance is carried out, and meanwhile observation is carried out; s4, the dried concrete is detected, and meanwhile defect checking and leak repairing are carried out. Through the auxiliary device and simple operation, overall operation and construction are facilitated, meanwhile, the strength of the overall concrete can be enhanced, engineering implementation is guaranteed, the curing space in a closed space is guaranteed, internal stress is reduced, and the strength of the concrete is guaranteed; and meanwhile, the injection requirement is met.

The invention provides a single cell sorting and printing integrated device and method. The device comprises a shell structure, an X-axis displacement mechanism, a Y-axis displacement mechanism, a printing head, a first visual module, a second visual module, a carrying table and a control module. The X-axis displacement mechanism and the Y-axis displacement mechanism are installed on the shell structure, and the Y axis is located below the X-axis displacement mechanism. The printing head is arranged on the X-axis displacement mechanism, a printing chip for realizing liquid injection through thermal bubbles is arranged on the printing head, the printing chip is provided with a plurality of nozzles which are independently controlled, and a liquid adding port of the printing head is open and forms a straight-through liquid path with the nozzles. The first visual module is installed on the X-axis displacement mechanism with a lens facing downwards, and the second visual module is installed on the Y-axis displacement mechanism with a lens facing upwards. And the carrying table is arranged on the Y-axis displacement mechanism and is provided with the pore plate. The control module is electrically connected with the X-axis displacement mechanism, the Y-axis displacement mechanism, the printing chip, the first vision module and the second vision module. According to the application, high-efficiency cooperation of single cell sorting, micro liquid sample application and cell printing is realized, and a closed-loop process from cell screening, waste liquid treatment to printing is completed.

The utility model relates to the technical field of garment steamer brush head, concretely relates to the brush head of matching adsorption type garment steamer and cloth art cleaning machine, including: host computer, hold module is equipped with the first pipeline and second pipeline of steam and condensate water conduction and can control the opening and closing unit of first pipeline opening and closing, brush head, detachable setting in the front end of holding module, condensate water back suction module, embeddedly installed in the front end of brush head, the suction cavity that can suck back condensate water is opened in condensate water back suction module, steam export module, embeddedly installed in condensate water back suction module and steam export end passes through condensate water back suction module and is set towards the front end of condensate water back suction module, the suction cavity is divided into first chamber and second chamber through steam export module and first chamber communicates with the import end of steam export module, the present application can not only carry out efficient ironing to clothes and can realize the even ring of condensate water.