8results about How to "Eliminate vortex" patented technology

The invention relates to the technical field of diaphragm pumps, in particular to a diaphragm pump split type diaphragm chamber structure which comprises a split type diaphragm cavity and further comprises an anti-corrosion assembly detachably connected with the split type diaphragm cavity through a connecting fastener and arranged opposite to the split type diaphragm cavity in the axial direction. The rubber diaphragm is clamped and fixed between the split type diaphragm cavity and the anti-corrosion assembly; and the cavity is defined by the split type diaphragm cavity, the anti-corrosion assembly and the rubber diaphragm. According to the split type diaphragm chamber structure provided by the invention, the medium inlet and outlet channel, the inlet and outlet valve and the connecting mounting disc of the pipeline are integrated on the diaphragm cavity outer ring body, so that when quick-wear parts such as a rubber diaphragm are replaced, the inlet and outlet valve and the pipeline do not need to be disassembled, and only the connecting fastener of the anti-corrosion assembly and the split type diaphragm cavity needs to be disassembled; the maintenance process is greatly simplified, and the downtime of equipment is shortened.

The utility model relates to the technical field of fiber processing, and discloses extrusion equipment for processing high-performance fiber products, which comprises a screw extruder, the screw extruder is provided with a feed port and a discharge port, a screw which is coaxially arranged in a centering manner and is driven by a motor is mounted in the screw extruder, and a spiral auger is mounted on the screw; the spiral auger comprises a feeding section close to the feeding port and a staggered-tooth shearing section close to the discharging port, the feeding section and the staggered-tooth shearing section are connected with each other, and the screw pitch of the feeding section is larger than that of the staggered-tooth shearing section. The screw pitch of the feeding section of the spiral auger is large, fiber materials can be rapidly conveyed, feeding smoothness is guaranteed, the screw pitch of the staggered tooth shearing section is small, and therefore melt pressure is balanced, pressure fluctuation is reduced, fiber melt extrusion is more stable, fibers are more evenly distributed in the melt, the mixing effect of the fibers is effectively improved, and the mixing efficiency of the fibers is improved. And the quality stability of the product is improved.

The utility model discloses a kind of gas pipe network intelligent safety control equipment, comprising: gas pipe network intelligent safety control equipment, comprising: flow measurement module and cut-off control module;Flow measurement module includes gas flowmeter, filter and check valve;Cut-off control module includes first electric ball valve, second electric ball valve and steel plastic conversion pipe fitting;One end of gas flowmeter is connected filter through straight-through pipe fitting, the other end is connected check valve through straight-through pipe fitting;The front end of filter is equipped with the gas intake port that is communicated with gas source, the rear end of check valve is equipped with gas outlet;Gas intake port and gas outlet each are equipped with a steel plastic conversion pipe fitting at place;First electric ball valve is installed between steel plastic conversion pipe fitting and filter, second electric ball valve is installed between steel plastic conversion pipe fitting and check valve;Flow measurement module is combined with cut-off control module, and constitute a U-shaped structure in space.

The utility model relates to the technical field of fuel cells, discloses a sensor mounting seat tube for a fuel cell air path system, and aims to solve the problems of inaccurate measurement, high maintenance cost and large flow resistance caused by airflow turbulence in the prior art. The installation seat tube comprises a tube body, and two ends of the tube body are connected in series with an external air path, an integrated rectification structure, a fixed support seat, an air flow meter installation interface and a differential pressure sensor installation interface. The rectifying structure adopts a perforated plate or a flow guide grid and is in smooth transition with the inner wall of the pipe body to reduce vortexes. The sensing interfaces and the fixing support seats are evenly distributed in the circumferential direction of the pipe body, and redundant configuration, multi-brand adaptation or idle plugging are supported. According to the utility model, the airflow stability is optimized through the rectification structure, low flow resistance and system reliability are considered, and the requirement of large flow is met; the connector of the air flow meter is fixed through screws, sealing performance is good, and quick disassembly and assembly are supported; the differential pressure sensor interface bolt and the cover plate are fixed, so that quick disassembly and assembly are realized, looseness is prevented, and the maintenance efficiency is improved.

The utility model discloses a valve technical field's steam atomization synergic reinforced type water spray temperature reducing device, including pipeline, one end in the pipeline is installed with cage type temperature reducing pressure reducing structure, one side of cage type temperature reducing pressure reducing structure is opened with steam inlet, the other side of cage type temperature reducing pressure reducing structure is connected with steam nozzle, the side of pipeline far away from steam nozzle is opened with outer ring hole, the bottom of pipeline is connected with temperature reducing water pipe, the inside of temperature reducing water pipe is opened with temperature reducing water inlet, one end of pipeline inside is close to steam nozzle and is installed with temperature reducing water nozzle. The utility model discloses the cooperation setting of steam nozzle, temperature reducing water nozzle, temperature reducing water inlet and cage type temperature reducing pressure reducing structure, utilizes high -speed atomization steam and temperature reducing water direct impact, and atomization steam flow rate is far higher than temperature reducing water, can evaporate temperature reducing water fast, and temperature reducing water divides into many tiny water mist, thereby has promoted the atomization effect of temperature reducing water.

The invention relates to the technical field of ultrasonic water meters, particularly provides a measuring tube of an ultrasonic water meter and the ultrasonic water meter, and aims to solve the problem of how to meet the dual requirements of high-precision metering and energy conservation in the practical application of the ultrasonic water meter. In order to achieve the purpose, the measuring pipe of the ultrasonic water meter comprises a middle pipe section, the rectifier is arranged on at least one side of the middle pipe section in the axial direction, and the rectifier comprises a spoke wheel and a plurality of spoke pieces arranged in the circumferential direction of the inner wall of the spoke wheel; the reflector plate support is provided with a first end and a second end which are opposite, the first end is located between the middle pipe section and the rectifier and used for installing the reflector plate, the second end extends towards the rectifier and is connected with the radial plates, and the sectional area of the reflector plate support is gradually reduced in the direction from the first end to the second end. The measuring precision of the measuring tube can be improved, and the pressure loss can be reduced, so that the dual requirements of high-precision measurement and energy conservation are met.

The application discloses a process method for rivet buckling and pressure riveting of a main plate of a heat exchanger, and relates to the technical field of heat exchanger manufacturing in a new energy automobile thermal management system. A servo pressure riveting device with a longitudinal ultrasonic excitation function is adopted, a flat head sinking type pressure riveting connection is performed on the main plate and the flow channel plate after pretreatment and coating through multi-stage variable pressure control, ultrasonic energy is synchronously applied during pressure riveting, shear thinning and self-adaptive flow leveling of the pre-coated heat conduction coating medium are caused, the resident air in the microscopic rough gap of the interface is discharged, and internal residual stress is eliminated through the acoustic plastic softening effect of the material. The application has the advantages that the ultrasonic auxiliary pressure riveting process is combined with the preposition of the phase change heat conduction coating medium, the acoustic control and thermal effect of the ultrasonic wave promote the self-adaptive flow leveling of the heat conduction medium, and the air micro gap remaining in the traditional buckling riveting is completely eliminated. Quantitative comparison tests show that.

The utility model discloses a multilayer plane taper die head, including die holder, upper die plate, lower die plate, die core, die nozzle and a plurality of middle die plate, the lower end surface of upper die plate, the lower end surface of each middle die plate all is equipped with the convex round table of big from big to small, is equipped with a plurality of spiral grooves that are evenly distributed along the circumference of convex round table on the outer wall of convex round table, be equipped with the recessed cavity in each middle die plate, lower die plate, each convex round table is in the corresponding recessed cavity respectively, each convex round table is equipped with circular cavity, and circular cavity is below recessed cavity, and each circular cavity is sequentially communicated from top to bottom and forms die cavity, and die core is in die cavity, and forms extrusion runner between die core and die cavity, each spiral groove and recessed cavity inner wall form a plurality of spiral runner, between upper die plate and the uppermost middle die plate, between each adjacent middle die plate, between the lowermost middle die plate and lower die plate all are equipped with multistage plane runner, and the upper end of each spiral runner is connected with the corresponding end of multistage plane runner respectively.