13results about How to "Fully exhausted" patented technology

The invention relates to the technical field of sand casting, in particular to an assembly-adjustable casting sand box for sand casting, which comprises a base plate, a first sand box and a second sand box, and further comprises four supporting plates, a supporting mechanism, a lifting mechanism, a preheating mechanism and a transfer mechanism, the top of the supporting plate is locked with the first sand box through a bolt; the four supporting mechanisms are fixedly connected to the four corners of the lower surface of the base plate correspondingly. The lifting mechanism is fixedly connected to the upper surface of the base plate. The horizontal adjustment of the first sand box and the second sand box is achieved, insufficient pouring is prevented, size errors and surface defects of castings are avoided, the purposes of preheating the first sand box and the second sand box are achieved, molten metal has good fluidity, molten metal pouring and exhausting are sufficient, local missing of the castings is avoided, and the auxiliary discharging function is achieved; the potential safety hazard of scalding can be eliminated, and the labor intensity of workers can be reduced.

The invention discloses a chicken feed processing protein additive fermentation device which comprises a fermentation tank, a valve and a cover plate, the valve is mounted at the bottom of the fermentation tank and discharges chicken feed in the fermentation tank, and the cover plate is mounted on the outer edge of the fermentation tank through a hinge and seals the fermentation tank to achieve anaerobic fermentation of the chicken feed. A compaction mechanism is installed in the center of the cover plate, a driver is installed on the upper surface of the cover plate, the driver drives the compaction mechanism to rotate to compact chicken feed stored in the fermentation tank, a support is installed on the left side of the upper surface of the cover plate, and a pressure relief mechanism is installed at the top of the support. The feed density is effectively increased, air in gaps of the feed is thoroughly discharged, a suitable breeding environment is provided for anaerobic beneficial bacteria, the activity and metabolism efficiency of the anaerobic beneficial bacteria are remarkably improved, breeding of aerobic infectious microbes is inhibited from the source, then the palatability of the fermented feed is improved, the digestive tract disease risk of chicken flocks is reduced, and healthy growth of the chicken flocks is promoted.

The embodiment of the present application provides a kind of battery and processing method of battery cell assembly primary structure.The battery cell assembly primary structure includes: battery cell body, the battery cell body has tab portion, the tab portion includes a plurality of sub-tab arranged in the thickness direction layer by layer, the tab portion includes the first face and the second face opposite in the thickness direction, the first face is used to be connected with cover plate;Exhaust assembly is at least provided to the first face, the exhaust assembly includes a plurality of first recesses arranged in the first face array, the first recess is used to provide gas escape path when the tab portion is welded with the cover plate.The battery cell assembly primary structure of the present application, when the tab portion is laser welded with the cover plate, part of the sub-tab that constitutes the inner wall of the first recess melts, forms gas escape path, reduces the influence on production rhythm.

The utility model discloses a miniature continuous fluid pump which comprises a cylinder body, a liquid inlet and outlet valve plate is installed at the top of the cylinder body, a cylinder body top cover is installed at the top of the liquid inlet and outlet valve plate, a motor is installed at the bottom of the cylinder body, a motor shaft at the top of the motor is connected with a driving gear, and the driving gear is connected with a motor shaft. The cylinder body is internally provided with two or more driven gears meshed with the driving gear, each driven gear is provided with an eccentric wheel, the cylinder body is internally provided with two or more pistons capable of moving up and down, the bottoms of the pistons are provided with long-strip-shaped through grooves for the eccentric wheels to slide, and the long-strip-shaped through grooves are communicated with the cylinder body. A piston cylinder allowing the pistons to be arranged in a sleeved mode is arranged in the cylinder body, the arrangement heights of the pistons are different, a liquid inlet and outlet valve sealing gasket is installed on the top of the cylinder body, and a liquid inlet channel is formed in a top cover of the cylinder body. Liquid is fed and discharged stably, the liquid outlet one-way valve ensures sufficient exhaust, fluid does not flow back, liquid is discharged smoothly, operation noise is low, and consumer experience is good.

The application provides a MEMS hydrophone and method, and relates to the technical field of MEMS hydrophones.The MEMS hydrophone comprises a base, a sound-permeable shell and an acoustic sensing assembly.The sound-permeable shell and the base form a first cavity filled with hydraulic oil;the acoustic sensing assembly is located in the first cavity and comprises a shielding cover, a printed circuit board, a flexible membrane, a transition carrier plate and a MEMS chip.The shielding cover, the printed circuit board and the flexible membrane surround to form a second cavity, and the shielding cover is provided with a communication hole communicating the first cavity and the second cavity.The MEMS chip, the transition carrier plate and the flexible membrane surround to form a third cavity filled with gas.The application realizes front hydraulic pressure transmission through the hydraulic oil in the first cavity, realizes back gas pressure compensation through compression of the third cavity by the flexible membrane, forms a cooperative pressure balance mechanism, significantly reduces the net pressure difference and the prestress borne by the MEMS chip, effectively inhibits the problems of sensitivity attenuation, linearity deterioration and frequency response drift under a deep-water high hydrostatic pressure environment, and simultaneously improves the structural safety and long-term reliability.

The application discloses a kind of based on substructure pre-stabilization ultra-high multilayer printed circuit board manufacturing method, suitable for the number of layers N greater than 20 ultra-high multilayer board manufacturing.The method divides the whole manufacturing process into three stages, and sequentially forms inner core, intermediate and final substructure.The core is: after each manufacturing stage is completed, the complete encapsulation process of metalization, resin filling, grinding and copper cap plating of interconnection hole is carried out, so that the mechanical and electrical stability of the current substructure is realized before entering the next stage of pressing.Meanwhile, for each substructure, its pressing process parameters are independently set to match its material and structural characteristics.The application effectively solves the core problems of poor interlayer alignment accuracy, poor high aspect ratio hole plating uniformity and low overall yield caused by thermal-mechanical stress accumulation in traditional manufacturing of ultra-high multilayer board, significantly improves the reliability and manufacturing efficiency of the product.

The invention belongs to the technical field of target material preparation, and discloses a gallium-magnesium-doped zinc oxide target material and a preparation method thereof.The preparation method of the gallium-magnesium-doped zinc oxide target material comprises the steps that 1, zinc oxide powder, gallium oxide powder and magnesium oxide powder are evenly mixed to obtain mixed powder; 2, the mixed powder is subjected to first-stage vacuum sintering; step 3, carrying out second-stage vacuum hot pressed sintering to obtain a gallium-magnesium doped zinc oxide target material; the particle size D90 of the zinc oxide powder is 3-4 [mu] m, and the particle size D90 of the gallium oxide powder and the magnesium oxide powder is 10-15 [mu] m; the total weight of the gallium oxide powder and the magnesium oxide powder is 1-5% of the weight of the mixed powder. By controlling the doping amount of gallium oxide and magnesium oxide, selecting the particle sizes of zinc oxide, magnesium oxide and gallium oxide and performing vacuum sintering for the first time in the step 2, the exhaust effect is improved, so that zinc oxide, magnesium oxide and gallium oxide with different particle sizes can be fully exhausted in the grain growth process, and the densification degree of the target material is improved.

The invention discloses an embedded compact die-casting process and a die structure, and relates to the technical field of die-casting dies. An embedded compact die-casting die comprises a fixed die, a movable die and a core layer forming mechanism, the core layer forming mechanism comprises an upper core module and a lower core module, the upper core module comprises an upper columnar core and a compact core, and the lower core module comprises a lower columnar core. The upper column mold core, the compact mold core and the lower column mold core are matched with one another and used for forming the inner side wall of the die casting, the compact mold core is arranged on the peripheral side of the upper column mold core in a sliding and sleeving mode, and secondary core filling can be conducted after pouring is completed. And through secondary core filling of the compact mold core, the molten metal can be effectively and continuously compressed in the forming cavity and flows to a low-pressure area, the overall wall thickness uniformity of the die casting is improved, and the requirement for high density of the casting tail end or the thick-wall part of the die casting is met.

The invention relates to the field of plastic product production equipment, and particularly discloses an efficient vacuum exhaust system based on split-flow feeding in a double-step plastic extruder, comprising: a base provided with a feeding cylinder; the fluid compression cavity is provided with a feeding port and a discharging port, and the feeding port is connected with the feeding cylinder and used for stacking molten plastic; the feeding barrel is fixed to the machine base and connected with the fluid compression cavity, a plurality of flow dividing holes and a plurality of vacuum holes are formed in the feeding barrel, and the flow dividing holes are connected with the discharging opening and used for dividing molten plastic in the fluid compression cavity; the screw rod is rotationally arranged in the inner cavity of the feeding barrel in a sealing manner and is used for rightward conveying the shunted molten plastic to the extrusion die head; the vacuum bins with the filtering function are fixed to the feeding barrel and communicated with the corresponding vacuum holes, and the feeding barrel, the fluid compression cavity and the feeding barrel are vacuumized and exhausted in cooperation with a vacuum pump. The exhaust efficiency is high, exhausted gas can be directly filtered and exhausted, and the environment-friendly requirement is met.

The application discloses a cooling liquid intelligent filling system for a new energy excavator, which comprises a cooling liquid tank, an electromagnetic water valve arranged on a water outlet pipeline of the cooling liquid tank, a power line plug and a controller line plug reserved for the electromagnetic water valve, and a water pump arranged in a cooling liquid circulating system of the excavator. Before the excavator is filled with the cooling liquid, the power line plug and the controller line plug of the electromagnetic water valve are inserted into the excavator, the whole vehicle supplies power to the electromagnetic water valve, and the whole vehicle controller controls the opening degree of the electromagnetic water valve through the controller line plug. The filling mode is selected through a vehicle-mounted instrument, a corresponding control program is executed by the controller, the rotating speed of the water pump in the cooling liquid circulating system of the excavator is controlled, and then the cooling liquid is controlled to flow in the cooling liquid circulating system. The application can automatically fill the cooling liquid, saves the labor cost of manual filling, can automatically circulate the filling of the cooling liquid and effectively discharge air bubbles, and prevents the heat dissipation effect from being reduced and the pipeline from being blocked due to the air bubbles in the pipeline.

The invention provides a normally-off field effect transistor. The normally-off field effect transistor comprises a semiconductor layer of a first conductivity type; a drain electrode located on the second main surface side of the semiconductor layer of the first conductivity type; a gate trench extending downward from the first main surface of the semiconductor layer of the first conductivity type; a gate electrode in the gate trench and including a conductive material having a higher work function than the first conductivity type semiconductor layer; a source contact trench extending downward from the first main surface of the semiconductor layer of the first conductivity type and located between adjacent gate trenches; the source electrode comprises a first part and a second part, the first part is in contact with the semiconductor layer of the first conductivity type along the side wall and the bottom of the source electrode contact groove and forms Schottky contact with the semiconductor layer of the first conductivity type, and the second part is located on the first part and is in contact with the semiconductor layer of the first conductivity type to form ohmic contact; and the gate dielectric layer is arranged between the gate electrode and the semiconductor layer of the first conductivity type and comprises a dielectric material of which the dielectric constant is greater than that of SiO2. According to the invention, the off-state leakage current of the field effect transistor can be reduced.

This invention discloses a metallic ceramic tile and its preparation method, belonging to the field of decorative ceramic technology. The metallic ceramic tile comprises a body layer and a metallic glaze layer adhered to the surface of the body layer. The raw materials for preparing the metallic glaze layer contain phosphorus minerals as a melting aid. By adding specific phosphorus minerals to the metallic glaze formulation, this invention effectively improves the venting performance of the glaze during firing, significantly reduces pinhole defects on the surface of the metallic glaze layer, and enhances the surface texture and decorative effect of the tile. Furthermore, the tile may also include an embossed layer, a base glaze layer, and a transparent wear-resistant protective layer, forming a multi-layered three-dimensional decorative structure with strong metallic luster, good three-dimensional effect, and excellent wear resistance, making it suitable for high-value-added wall decoration materials.

The invention discloses a dynamic tubular reaction system, and belongs to the technical field of reactors, the dynamic tubular reaction system comprises a plurality of tubular reactors which are connected end to end and are annularly arranged, and the tubular reactors are transversely arranged; and a gas outlet pipe with an upward opening is arranged at the connection position of the adjacent tubular reactors. According to the invention, the plurality of tubular reactors are annularly arranged end to end and are transversely arranged, the gas outlet pipes with upward openings can be arranged at the connection positions of the adjacent tubular reactors, and the arrangement of the plurality of gas outlet pipes increases the area of a gas-liquid interface, so that gas generated by reaction is conveniently discharged, and the influence of the gas on material flow is reduced; the continuous reaction is ensured, and the stable reaction is realized; meanwhile, a plurality of tubular reactors are connected end to end and are annularly arranged, so that the reaction path is increased through material circulation, and the product yield is improved.