44results about How to "Uniform outflow" patented technology

The invention relates to a ladle ventilating upper nozzle seat brick and a method for controlling nozzle slag volume, which comprises a ladle upper nozzle seat brick body, a ventilating ceramic rod and an air chamber box, the air chamber box is located at the bottom of the ventilating ceramic rod and connected with the ventilating ceramic rod Connected, there are a plurality of breathable ceramic rods, which are evenly arranged in the body of the upper nozzle block in a ring around the flow steel hole. The top of each breathable ceramic rod protrudes from the upper surface of the upper nozzle block body. A plurality of slots for fixing the air-permeable ceramic rods are provided, and the bottom end of each air-permeable ceramic rod extends into the slot of the air intake chamber box. When the molten steel in the ladle is at a low level, argon gas is blown in from the inlet pipe to form a ring-shaped air curtain barrier around the upper nozzle of the ladle to wash the molten steel that is about to enter the upper nozzle. The problem of eddy current slag entrainment at the nozzle not only improves the cleanliness of molten steel, but also reduces the amount of molten steel in the ladle injection surplus, a year-on-year decrease of more than 30%.

This invention discloses a air supplying and discharging pipeline, especially an evenly absorbing and discharging pipeline that is adequate for long distance air supplying and discharging pipeline. It includes a simple and convenient ventilation flow equalizer, which is composed of several air ports arranged on the ventilation pipeline. The projecting area of the air port windward sections on air supplying pipeline section are increased or decreased successively. The flow rate and pressure of air port can be adjusted according to the position of air port, in order to realize evenly discharging or absorbing of the air supplying pipeline. This invention is easy to assemble too.

The invention relates to a stemming at a taphole; the weight percentages of the components are the following: 20 to 40 of corundum, 10 to 20 of silicon carbide, 3 to 10 of silicon nitride, 10 to 23 of coke powders, 1 to 5 of graphite powders, 3 to 10 of sericite, 1 to 5 of active alumina micropowders, 5 to 15 of clay, 5 to 10 of pyrophyllite, 1 to 3 of metal powders, and +15 to 25 of water-free binder. The stemming adds a plurality of materials with plasticity and good cohesiveness to cause the stemming to easily block the hole and fill interspaces, with good binding performance of new stemming and old stemming; materials with medium and high temperature expansion are added to reduce the size of the stemming contraction at high temperature, and cracks can be avoided; materials with sintering function within different temperature areas are added, so the stemming has good sintering strength in different temperature scopes; materials with high-temperature resistance and good erosion resistance are added, and thus the stemming has high strength at high temperature, washing resistance and erosion resistance.

The invention belongs to the technical field of continuous casting, in particular to an electromagnetic type tundish restraining a submersed entry nozzle from being blocked. The electromagnetic type tundish restraining the submersed entry nozzle from being blocked comprises a tundish bottom cavity, a rotating magnetic field generation device, a water channel, a circuit and a waterproof supportingplate. The rotating magnetic field generation device is installed in the tundish bottom cavity. The water channel and the circuit are provided with respective cavities. The waterproof supporting plateis arranged at the lower end. The electromagnetic type tundish restraining the submersed entry nozzle from being blocked can be universally applied to existing square blank, round blank and plate blank continuous casting machines and can be used for single-strand continuous casting or multi-strand continuous casting; steel liquid can generate clockwise or anticlockwise rotation at the positions of the submerged entry nozzle and a stopper rod, the submerged entry nozzle can be restrained from being blocked, the outflow uniformity and stability of the submerged entry nozzle can also be improved, a flow field and a temperature field in a crystallizer are made uniform, and then the quality of a cast blank is improved.

The invention discloses a method for solving the problem of air supply uniformity in a large-area, large-space and high-precision environment. A horizontal air supply and horizontal air return mode is adopted in the method, wherein the horizontal air supply means to supply air to the large space through a horizontal air supply sandwich wall, and the air supply side of the horizontal air supply sandwich wall is formed by an air supply lug boss orifice plate; and the air supply lug boss orifice plate comprises an orifice plate in which holes are uniformly distributed and conical lug bosses, air flues are arranged in the conical lug bosses, the air inlets of the air flues are big, the air outlets of the air flues are small, a conical lug boss is fixed in each hole of the orifice plate, the porosity k of the orifice plate is 0.2 to 5 percent, the escape velocity of the holes is less than 4 meters per second, and the ratio of the air flow velocity vertical to the escape direction of the holes before the flow escapes the holes to the flow rate of the holes is less than or equal to 0.25. According to the method, the requirements of control precision, stability and uniformity of the air in a working area can meet the international requirements, and the stability, the uniformity and the precision of the temperature and the humidity of the air in the large-area large space are effectively ensured.

The invention relates to the technical field of electric vehicles, and discloses an electric vehicle gluing robot capable of controlling the amount of glue applied, comprising: a base, a rubber storage shell is fixedly installed at the left end of the base, and a rubber storage shell is fixedly installed at the lower end of the rubber storage shell. The fixed frame, the middle part of the fixed frame is fixedly inserted with a feed pipe, the upper end of the feed pipe is fixedly installed with a fixed shell, the inside of the fixed shell is movably connected with a storage wheel, the inside of the fixed shell is fixedly installed with a fixed plate, the fixed plate There are two symmetrical scrapers fixedly installed on the lower surface. Through the combined use of the fixed frame, fixed block, material storage tank and dispensing tip, the glue can be effectively guaranteed to flow out at a uniform speed, and the glue will not flow out particularly uniformly, so that individual parts of the car body are particularly thickly coated. After affixing the label, the part where the glue is thick will form a bulge, which will affect the overall appearance of the vehicle, thus ensuring the uniform output of glue and the overall flatness of the vehicle body.

The invention relates to the technical field of manufacturing wave flow in a harbor basin, and discloses a tidal structure of a wave flow in a harbor basin, including tidal equipment, a pump well and an underground reservoir. The bottom wall of the harbor basin is preset with a reserved through hole, and the reserved through hole Through the thickness direction of the bottom wall, the tidal generating equipment is fixedly arranged in the reserved through hole, the lower end of the tidal generating equipment leads to the pump well, the pump well leads to the underground reservoir, and the upper end of the tidal generating equipment leads to the harbor basin, when the tidal generating equipment After start-up, the tide-generating equipment drives the water in the underground reservoir to be transported into the harbor basin through the reserved through-hole; There is an underground reservoir connected to the bottom of the reserved through holes, so that during the simulation process of tidal growth, the water flows out from the bottom to the top of the reserved through holes, which can flow out more evenly and smoothly, achieving a more realistic simulation effect. It is more suitable for the tidal process and has better simulation effect.

The invention discloses a karman vortex street shaped runner and a drip irrigation emitter comprising the same, and belongs to the technical field of agricultural water-saving irrigation. The karman vortex street shaped runner consists of two or more karman vortex street shaped runner units, wherein each karman vortex street shaped runner unit comprises a first upper arc-shaped columnar channel, a first lower half-arc-shaped columnar channel, a second lower half-arc-shaped columnar channel and two columnar channels; when being fed into one karman vortex street shaped runner unit from the inlets of the karman vortex street shaped runner unit, liquid passes through a sudden expansion part, a sudden shrinkage part, a sudden expansion part and a sudden shrinkage part in sequence, and enters the next karman vortex street shaped runner unit from the outlet of the karman vortex street shaped runner unit. The drip irrigation emitter comprises a runner base body and the karman vortex street shaped runner formed in the surface of the rubber base body, wherein a water inlet groove and an irrigation emitter outlet are respectively formed in two ends of the karman vortex street shaped runner. The karman vortex street shaped runner and the drip irrigation emitter comprising the same are large in passage cross section, low in vortex energy consumption, intense in turbulent fluctuation and good in flow uniformity.

The invention belongs to the technical field of continuous casting and particularly relates to a submersed nozzle for plate blank electromagnetic rotational flow continuous casting. The submersed nozzle for the plate blank electromagnetic rotational flow continuous casting is composed of a molten steel inflowing end, a side wall, a hollow inner cavity, a nozzle bottom and molten steel discharging holes. The pair of molten steel discharging holes same in size and shape are laterally symmetrically formed in the side wall close to the nozzle bottom. The upper edge of each molten steel discharging hole is of an arc-shaped curved face. The included angle beta of inner surface tangents of each arc-shaped curved face is 30 degrees-120 degrees. The lower edge of each molten steel discharging hole is of a slope. The dip angle of each slope is -30 degrees to +30 degrees. One side face of each molten steel discharging hole is inclined inwards and the other side face is parallel to the wide face of a crystallizer. The included angle theta of the two side faces is 0 degree-20 degrees. According to the submersed nozzle for the plate blank electromagnetic rotational flow continuous casting, outflow of the two molten steel discharging holes can be evened, liquid level fluctuation on the meniscus portion of the crystallizer is reduced, the effect of rotational flow continuous casting is thoroughly achieved, and meanwhile impact effect on the wide face of the crystallizer by the outflow of the nozzle caused by the rotational flow can be reduced.

The invention discloses a spring-type piezoelectric pump with valve. One end of a lower pump body is connected with a liquid inlet section through a flange, and an inlet check valve is arranged at the liquid inlet section of the liquid inlet section close to one end of the lower pump body. The other end is connected with the liquid outlet section through a flange, and an outlet check valve is provided at the liquid outlet of the lower pump body, the upper end of the lower pump body is connected with the upper pump body through a flange, and the top surface of the upper pump body is closely The piezoelectric vibrator is fixed together; the present invention designs a new type of spring-type passive valve structure, and proposes to use the pre-tightening force of the spring to help shorten the response time of the valve. The piezoelectric pump body and the pipeline are connected by flange, which is more concise and convenient to install. The chamfered structure is adopted on the protrusion of the installed valve, which can be closer to the streamline than the case without chamfering, reduce the vortex generated when the liquid flows, and reduce the energy loss.