31results about How to "Accelerated exclusion" patented technology

The embodiment of the invention discloses a dangerous chemical identification method, and the method comprises the steps: obtaining chemical information data, and constructing a dangerous chemical semantic database according to the chemical information data through employing a deep learning multi-modal data fusion algorithm; according to naming rules and attributes of chemicals, defining text variables and numerical variables, extracting hazardous chemical judgment conditions from the chemical information data, and establishing a hazardous chemical rule base according to the text variables, the numerical variables and the hazardous chemical judgment conditions; according to the chemical information data, establishing a hazardous chemical data model based on a graph neural network technology; constructing a hazardous chemical substance identification system by using the hazardous chemical substance semantic library, the hazardous chemical substance rule library and the hazardous chemical substance data model; and obtaining to-be-classified chemical information, and classifying to-be-classified chemicals in the to-be-classified chemical information by using a hazardous chemical identification system to obtain a hazardous chemical judgment result. According to the invention, more intelligent and accurate dangerous chemical identification is realized.

The invention discloses a building construction foundation pit supporting structure and a supporting method thereof. The structure comprises a foundation, fender posts, water stop piles, supporting piles, a top beam, a waist beam, anchor cables, a slope protection concrete layer, a soil nailing wall concrete layer, a gravel cushion layer, a water suction pump, a water suction pipe, a well lid, a deepened bearing platform, a reinforced brick tire film and a well casing. The method comprises the steps of 1, field leveling; step 2, enclosure system construction; thirdly, a water stop system is constructed; fourthly, well point dewatering construction is conducted; 5, layered earth excavation is conducted; sixthly, a pit bottom cushion layer is constructed; the pit bottom multi-layer composite cushion layer structure is designed, the gravel cushion layer with the appropriate thickness is laid at the pit bottom so that redundant water can be rapidly removed, the foundation bearing capacity can be enhanced, then the reinforced thickened concrete cushion layer is additionally arranged on the gravel cushion layer, and the overall strength and rigidity of the cushion layer are improved through a reinforcing mesh or a fiber reinforced material; upper loads are effectively dispersed, and pit bottom soil is prevented from further extrusion deformation.

The invention discloses a self-cleaning unmanned aerial vehicle nest for cleaning glass of a high-rise building. The self-cleaning unmanned aerial vehicle nest comprises a gyroscope stabilizing system, a nest dehumidification system, a nest closing system, a cabin door cleaning system and a solar system. The gyroscope stabilizing system is connected with the wireless charging base; the nest dehumidification system is located in the cabin body and used for dehumidifying the unmanned aerial vehicle working in rainy days; the machine nest sealing system comprises a left side cabin door, and the left side cabin door contains a self-cleaning coating and has waterproof and anti-adhesion functions, so that the cabin door is kept clean; the cabin door cleaning system ensures that the surfaces of the left cabin door and the right cabin door are clean, and a novel solar panel on the surface of the right cabin door supplies power to internal equipment. The high-rise building glass cleaning device can well solve the problem of high-rise building glass cleaning, and the machine nest is effectively prevented from severely swinging under the strong wind condition. The requirement for safe take-off and landing of the unmanned aerial vehicle in a strong wind environment is met, and the unmanned aerial vehicle can adapt to high-strength continuous operation.

The embodiment of the utility model discloses a rail transit energy-saving system based on flywheel energy storage and rail transit, the system comprises a flywheel management controller, an AC-to-DC unit and at least two groups of flywheel energy storage systems, and each group of flywheel energy storage system comprises a control unit and a flywheel energy storage unit; the flywheel management controller is electrically connected with the control unit; the control unit is used for being electrically connected with a direct current bus; in the same flywheel energy storage system, the control unit is electrically connected with the flywheel energy storage unit and can control the flywheel energy storage unit to work. The input end of the AC-to-DC unit is used for being electrically connected with a rail transit AC power grid, and the output end of the AC-to-DC unit is used for being electrically connected with a DC bus. Therefore, the control logic of the control unit is simplified, the data processing workload of the flywheel management controller is reduced, the processing period is shortened, and the real-time control response is improved.

The invention discloses a preparation method of a balanced polyunsaturated fatty acid pumpkin seed oil-multi-element probiotic composite microcapsule, and relates to the technical field of biological materials. Comprising a composite microcapsule, and the composite microcapsule takes mixed pressed oil and probiotics as a core material and takes a whey protein and Arabic gum mixture as a wall material; the core material is embedded in the wall material; the mixed pressed oil comprises pumpkin seed oil and linseed oil; the preparation method comprises the following steps: S1, preparing balanced polyunsaturated fatty acid mixed pressed oil; s2, preparing a microcapsule wall material; s3, activating and preparing the probiotics; and S4, preparing the microcapsule. According to the preparation method of the microcapsule, probiotics are delivered to a target position, and the microcapsule is helpful for establishing a stable bacterial colony of an intestinal tract.

The invention discloses a multifunctional seed soaking and germination accelerating device for agricultural planting, and belongs to the field of agricultural planting, a discharging device comprises a fixing plate, the fixing plate is fixedly connected to the bottom of the inner wall of a planting box, a sliding groove is formed in the front face of the inner wall of a box body, and a hinge block is slidably connected to the front face of the inner wall of the sliding groove; the hinge blocks are hinged to the back faces of the planting boxes, and the front face of the inner wall of the box body is fixedly connected with first limiting blocks. Through cooperation of the electric telescopic rod and the permanent magnet, the planting box can incline in the lifting process, and crops in the planting box are promoted to move leftwards. At the moment, the pressure in the first hydraulic bin is increased, a gear is driven, a shovel plate is pushed to move crops in the planting box to the left side, discharging is achieved, liquid in the box body can be repeatedly used, due to the fact that the liquid is repeatedly used, effective circulation of liquid resources can be achieved in the process, waste is reduced, and the crops can be moved out more efficiently.

The invention relates to the technical field of transparent ceramics, and particularly discloses a transparent ceramic with high visible-infrared transmittance, the chemical general formula of the transparent ceramic is MgAlxGa2O4 + 1.5 x, the value range of x is 0 < x < = 1.5, and the preparation method of the transparent ceramic comprises the following steps: molding, sintering and annealing raw material powder based on MgAlxGa2O4 + 1.5 x to finally obtain the transparent ceramic. The series of transparent ceramics provided by the invention not only show high transmittance in visible-infrared bands, but also successfully solve the problem of poor sample optical uniformity caused by white point aggregation in the sintering process of Mg (AlxGa1-x) 2O4-based transparent ceramics, and simultaneously overcome the problems of narrow infrared cut-off edge and the like of magnesium aluminate spinel transparent ceramics; the related preparation process is simple, the raw materials are easy to obtain, the cost is low, and the material can be applied to the fields of transparent armors, infrared windows, fairings of aircrafts, protection windows and the like.

The application relates to the technical field of transparent ceramics, and particularly discloses a high-visible-infrared-transmittance transparent ceramic, a chemical general formula of which is MgAl x Ga2O 4+1.5x , and the value range of x is 0 < x <= 1.5, and a preparation method thereof comprises the following steps: performing molding on raw material powder based on MgAl x Ga2O 4+1.5x , sintering and annealing, and finally obtaining the transparent ceramic. The series of transparent ceramics disclosed by the application not only exhibit high transmittance in the visible-infrared wave band, but also successfully solve the problem that the optical uniformity of Mg(Al x Ga 1‑x )2O4-based transparent ceramics is poor due to white point aggregation in the sintering process, and meanwhile overcome the difficulty of a narrow infrared cutoff edge of magnesium-aluminum spinel transparent ceramics; and the preparation process is simple, raw materials are easy to obtain, and the cost is low, so the transparent ceramic can be applied to the fields of transparent armor, infrared windows, fairing covers and protective windows of aircraft and the like.

The present invention discloses a wear-resistant sealed pressure screen and a pressure screen upper cover. The pressure screen comprises an upper cover, a cylinder and a screen drum. The upper cover is provided with an upper cover flange, a light residue pipe and a dilution water pipe. The cylinder is provided with a cylinder flange, and the screen drum is provided with a screen drum flange. The upper cover flange is connected to the cylinder flange, and the cylinder flange is connected to the screen drum flange. An upper cover flange protection structure is provided between the inner wall of the upper cover and the screen drum flange, and a cylinder flange protection structure is provided between the screen drum flange and the upper cover flange. The pressure screen upper cover sets the light residue pipe as a horizontal pipe, and sets the inlet of the dilution water pipe along the tangent direction of the upper cover, and the guide plate extends into the light residue bend pipe, which accelerates the removal of light residue impurities and slows down the wear rate. In addition, the upper cover flange protection structure prevents the slurry from contacting the upper cover flange, and the lower plane of the upper cover flange is lower than the upper plane of the screen drum flange, and the outer circle of the screen drum flange forms a close fit with the upper cover flange, which can avoid the contact between the cylinder flange and the slurry, protect the sealing groove from wear, and extend the service life of the super screen cylinder.

The invention relates to a smelting method of an aluminum-free high-temperature alloy, which relates to the technical field of alloy materials, and is characterized in that the contents of oxygen, nitrogen and sulfur elements in a high-temperature alloy melt are gradually reduced by adding different composite deoxidizing and sulfur agents for three times in the smelting process; through two times of refining, melt quenching and tempering treatment and high-temperature purification treatment, removal of oxygen, nitrogen and sulfur elements in the high-temperature alloy melt is promoted, the content of harmful impurities is effectively reduced, segregation of alloy elements is reduced, and the purity and performance of the high-temperature alloy are improved.

The utility model relates to the technical field of building water prevention and heat insulation, and discloses a novel building structure water prevention and heat insulation device which comprises a U-shaped building, a hole is formed in the middle of the top end of the U-shaped building, clamping grooves are formed in the left end and the right end of the inner side of the hole, and a protection layer is fixedly connected to the bottom end of the inner side of the hole. The top end of the protective layer is fixedly connected with a gas insulation layer, the top of the gas insulation layer is fixedly connected with a waterproof plate, the top end of the waterproof plate is fixedly connected with a hollow plate, the top of the hollow plate is fixedly connected with a heat preservation plate, and the middle of the top end of the heat preservation plate is fixedly connected with a heat insulation plate. According to the novel building, through mutual cooperation of the protective layer, the gas insulation layer, the waterproof plate, the hollow plate, the heat preservation plate, the heat insulation plate, the combination layer and the long holes, the heat insulation and waterproof effects on the novel building are achieved, meanwhile, the situations of water rain infiltration and high temperature in the using process of the building are avoided, and the utilization rate of the building is increased.

The utility model discloses an on-line closed sampling device for a High-K precursor material, which relates to the technical field of semiconductor materials, and comprises a main sampling pipeline, and further comprises a main sampling pipeline, a sampling bottle, a material collecting device, a material collecting device and a material collecting device, the nitrogen pipeline is connected with the main sampling pipeline through a nitrogen branch pipe; the vacuum pipeline is connected with the main sampling pipeline through a vacuum branch pipe; the plurality of valves are sequentially arranged according to numbers and are configured to realize vacuumizing, nitrogen replacement, material filling and sampling operations through the switch combination; according to the device disclosed by the utility model, a negative pressure sampling mode is combined with nitrogen replacement, so that air and moisture in a sampling container and a pipeline can be quickly removed before sampling, a sampling environment is ensured to meet the water-free and oxygen-free requirements, and a high-K precursor material is effectively prevented from going bad or causing safety accidents due to contact with the moisture and oxygen in the air.

The present invention relates to a tea aroma enhancement method, which includes analyzing the material properties of tea raw materials, determining parameter standards for aroma enhancement treatment of the tea raw materials, starting an automatic aroma enhancement system and setting the operating parameters of the automatic aroma enhancement system, preheating an aroma enhancement machine and adding tea raw materials into a feeding hopper, and after the aroma enhancement machine is preheated, starting a material separation unit to automatically quantitatively separate the tea raw materials and adding materials into each aroma enhancement machine according to the determined parameter standards, and the aroma enhancement machine is operated according to the determined parameter standards to complete the aroma enhancement treatment of the tea, and the tea leaves after the aroma enhancement treatment are collected and sorted into tea leaves of different specifications and qualities by a post-processing unit. The above scheme provided by the present invention can realize automatic aroma enhancement treatment of tea leaves, improve the quality of tea leaves and reduce the production cost of tea leaves.

The invention provides a horizontal tube falling film evaporation seawater desalination device, which relates to the technical field of seawater desalination, and comprises a plurality of single-effect evaporators connected in series, a first steam channel is arranged on a first side of a vaporization cavity of each single-effect evaporator, a second steam channel is arranged on a second side of the vaporization cavity, and a liquid distributor is arranged on the upper part of the inner side of the vaporization cavity. A plurality of layers of liquid discharging heat exchange pipes and special-shaped heat exchange pipes are arranged below the liquid distributor, the first ends and the second ends of the liquid discharging heat exchange pipes communicate with the first steam channel and the second steam channel correspondingly, and the first ends and the second ends of the special-shaped heat exchange pipes communicate with the first steam channel and the second steam channel correspondingly. The liquid discharge heat exchange pipe is arranged on the upper portion of the vaporization cavity, liquefied gas discharge is accelerated, gas flow is increased, meanwhile, the special-shaped heat exchange pipe is arranged on the lower portion of the vaporization cavity, the upper portion of the special-shaped heat exchange pipe is of a slope structure, accumulation of salt dirt on the pipe wall can be reduced through seawater scouring, and therefore the heat exchange effect is improved on the basis of reducing dirt. And the overall heat exchange efficiency is improved.

This invention relates to a method for preparing modified fly ash, its products, and their applications. The preparation method includes: sequentially subjecting fly ash to a first grading and screening, magnetic separation, a second grading and screening, and ultrasonic modification to obtain the modified fly ash. The modified fly ash of this invention has a low heavy metal content, reducing pollution. This invention also provides a soil conditioner, which includes the modified fly ash. The mixing of modified fly ash with a saline-alkali soil mortar layer can completely disrupt the dense structure of the mortar layer, increase the soil's permeability and aeration, improve the downward migration channels of saline-alkali ions, and thus accelerate the removal of saline-alkali ions. This method utilizes a large amount of solid waste and achieves the improvement of saline-alkali soil, possessing significant economic and social value.

The invention discloses a multi-stage multi-source heat pump heat recovery instant hot water and shower room moisture-proof device, comprising a heat recovery device, a dehumidification device, and a filtering device. The heat recovery device comprises a plate condenser, a compressor, a liquid collector, a first drying filter, a preheating coil heat exchanger, a backwashing filter, a wastewater pump, a primary plate exchanger, a flow regulating valve, a preheating water tank, a tap water inlet pipe and a shower head. The plate condenser, the compressor, the liquid collector, the first drying filter, and the preheating coil heat exchanger are connected through pipelines to form a refrigerant circulation system. The backwashing filter, the wastewater pump, the primary plate exchanger and the plate condenser are connected through pipelines to form a wastewater circulation system. The flow regulating valve, the tap water inlet pipe, the preheating water tank, the shower head, the plate condenser and the primary plate exchanger are connected through pipelines to form a hot water circulation system. The invention realizes "instant heating" of the hot water system, can recover exhaust air waste heat and waste water waste heat, and realizes multi-stage automatic filtration of waste water.

The invention discloses an electric vehicle battery waterway exhaust control method, device and equipment and a medium, and relates to the technical field of vehicle intelligent control. The method comprises the steps that the installation position of an exhaust valve body in a battery waterway is determined based on vehicle operation historical data, so that the exhaust valve body and a sensor are installed; waterway information is obtained in real time through the sensor, and exhaust control of the exhaust valve body is achieved by adopting preset control logic in combination with the working condition of the battery. The preset control logic comprises normal exhaust control logic, emergency heat dissipation control logic, pre-control logic and intelligent adjustment control logic. The sensor comprises a temperature sensor and an air pressure sensor, and the waterway information comprises gas pressure in a waterway and temperature in the waterway. Through efficient exhaust and heat dissipation optimization, gas in the water path can be quickly and thoroughly exhausted, and the heat dissipation effect of the battery is remarkably improved.

The invention relates to the field of battery electrode quality detection, in particular to a battery electrode cast-weld quality detection method and system based on vision. The method comprises the steps that time sequence cast-weld control parameters of a battery electrode and a cast-weld area image after cast-weld are collected, and the time sequence cast-weld control parameters comprise current, voltage, temperature, cast-weld position and cast-weld speed; the difference value between the time sequence cast-welding control parameters of the battery electrode and the standard time sequence cast-welding control parameters is calculated, whether an abnormal cast-welding spot exists or not is determined, and the cast-welding spot is the cast-welding range of any moment in the time sequence cast-welding control parameters; if the abnormal cast-weld spot exists, extracting a suspected defect area image from the cast-weld area image after cast-weld is completed according to the abnormal cast-weld spot; and inputting the suspected defect area image into a trained quality detection model, and determining whether the cast-weld quality of the battery electrode is qualified or not. The problem that the cast-weld quality of the battery electrode cannot be rapidly and accurately detected is effectively solved.

The invention discloses a method and system for preventing wrong box association of two-dimensional code associated cigarettes, and belongs to the technical field of cigarette production, and the method comprises the following steps: verifying small box two-dimensional code information in a two-dimensional code association system; when wrong two-dimensional code information is found, a programmable logic controller (PLC) is used for controlling and triggering a small box detecting and removing device to perform removing operation; after wrong small boxes are removed, the cigarette supplementing operation can be automatically carried out; on the belt for arranging the small boxes into the strip, the two-dimensional code information of the upper small box and the lower small box is verified again, it can be further ensured that the two-dimensional code of each small box in the cigarette carton is correct, and the problem of wrong box association is avoided. According to the method, through verification and removal operation of multiple steps, the problem of wrong-box association of the two-dimensional code associated cigarette cartons is effectively prevented, the accuracy and efficiency in the tobacco product packaging process are improved, and the product quality is ensured.

This invention relates to a method for preparing photocurable high thermal conductivity aluminum nitride ceramic irregular parts based on the synergistic regulation of residual carbon and yttrium fluoride, comprising the following steps: S1, preparing a photocurable resin system; S2, adding aluminum nitride powder, yttrium fluoride, and a dispersant to the photocurable resin system to obtain a composite ceramic slurry suitable for photocurable 3D printing; S3, curing layer by layer to obtain an aluminum nitride ceramic irregular part green body; S4, placing the ceramic green body obtained in step S3 in an atmosphere sintering furnace for two-step debinding; S5, taking a small sample of the debinded sample obtained in step S4 for residual carbon content calibration; S6, sintering to obtain the aluminum nitride ceramic irregular part. This invention precisely controls the residual carbon content after debinding by designing photocurable monomer combinations with specific functionalities, and simultaneously uses yttrium fluoride sintering aid to achieve a triple effect of densification, removal of lattice oxygen, and absence of liquid phase residue. The residual carbon regulation and the synergistic effect of the aid complement each other to jointly achieve the preparation of high thermal conductivity aluminum nitride ceramic irregular parts.

The utility model relates to the technical field of electric power engineering, in particular to an insulating operating rod with a cluster parachute protection function. The utility model relates to an insulating operating rod with a cluster parachute protection function, which comprises a first operating rod and a second operating rod, the top of the first operating rod is provided with an operating head, the middle part is provided with an insulating umbrella group, and the bottom is provided with a first detachable connection structure. A second detachable connecting structure is arranged at the top of the second operating rod, and a grip is arranged at the bottom of the second operating rod; the first operating rod and the second operating rod are detachably connected through the first detachable connecting structure and the second detachable connecting structure. According to the utility model, the insulating performance is obviously improved by arranging the insulating umbrella group, the use flexibility is enhanced by detachable connection, the operation head and the grip are matched to ensure accurate and stable operation and anti-skid insulation, and the main body of the rod body is made of epoxy glass fiber reinforced plastic to ensure firmness and durability; the whole device has outstanding advantages in the aspects of guaranteeing the safety of operators, improving the power operation efficiency, reducing the use cost and the like.

The present invention belongs to the technical field of electrospark forming processing equipment. In order to solve the technical problems of low processing efficiency and high electrode loss in five-axis linkage electrospark forming processing of complex three-dimensional curved surface parts, the present invention provides a new group of combined electrodes for high-efficiency discharge processing of closed integral impellers, and proposes to separate roughing and fine processing, and adopt different methods to make rough processing have higher processing efficiency; taking a closed integral impeller with 5 flow channels as an example, the present invention proposes to segment and optimize the complex electrodes while overcoming motion interference, and change the decomposed electrodes for rough processing into a combined tube electrode group. On this basis, the present invention provides a clamp device used for a new group of combined electrodes for high-efficiency discharge processing of closed integral impellers according to the characteristics of the combined tube electrode group. The electrode mounting seat is designed with electrode tube mounting guide array holes evenly distributed, wherein the installation of the electrode tube adopts a discrete array arrangement to achieve curved surface profiling.

The utility model discloses an anti-skidding swimming pool ground mat which comprises a base plate layer, an anti-skidding layer is integrally formed on the base plate layer, drainage grooves are formed in the anti-skidding layer and are of a radioactive structure, and anti-skidding particles are densely distributed on the upper surface of the anti-skidding layer and used for improving the anti-skidding effect of the anti-skidding layer. The base plate layer is of a hexagonal honeycomb structure and is evenly distributed, the laying layer is arranged at the bottom of the base plate layer, and the multiple sets of anti-displacement suction cups are evenly distributed at the bottom of the laying layer and used for improving the fastening effect with the ground and preventing slipping. The utility model relates to the technical field of safety protection of swimming pools, and the ground mat for the swimming pools can provide good anti-skid performance and drainage performance and can provide stable support, so that the using effect is improved.

The application relates to a structure for preventing scrap accumulation of a numerical control rotary table, which comprises a sealing cover plate, a second sealing element and a sealing flange coaxially arranged; a gas cavity is enclosed between the sealing cover plate and the sealing flange. The application can reduce downtime cleaning time, improve machining efficiency, effectively reduce labor cost, and prolong the service life of the numerical control five-axis rotary table.

The invention discloses a pile foundation vertical bearing capacity detection device for geotechnical engineering, and relates to the technical field of pile foundation detection. The device comprises a bottom plate, the top of the bottom plate is fixedly connected with a stand column, the side, away from the bottom plate, of the stand column is fixedly connected with a top plate, a groove is formed in the top of the bottom plate, a sheet type pressure sensor is embedded in the bottom of the inner side face of the groove, and positioning mechanisms are fixedly connected with the inner side face of the groove and evenly distributed in the circumferential direction of the groove. The pressure mechanism is arranged at the interval between the bottom plate and the top plate, the side, away from the bottom plate, of the pressure mechanism is fixedly connected with the side, close to the bottom plate, of the top plate, the positioning mechanisms distributed in the circumferential direction can limit the pile foundation to the center of the groove body, the pre-positioning effect is achieved, and it is ensured that the pressure mechanism can be pressed over the top of the pile foundation; and therefore, pressure can be better applied, the sheet type pressure sensor can better detect the pressure borne by the pile foundation, and a more accurate detection effect is obtained.

The utility model discloses a multifunctional pneumatic extinguisher which comprises a machine body, a using assembly is arranged on the machine body, the using assembly comprises a motor, an air pipe, a rotating blade, a water tank and a top handle, the motor is fixedly installed on the machine body, the air pipe is connected to one end of the machine body, the rotating blade is connected to the output end of the motor, and the water tank is connected to the top handle. The water tank is arranged at one end of the machine body, the top handle is arranged at the top of the machine body, an adjusting assembly is arranged on the water tank and comprises a water inlet pipe, a rotating ring and a rotating rod, the water inlet pipe is installed at the top of the water tank, the rotating ring is rotationally connected to the water inlet pipe, and the rotating rod is installed on the rotating ring; the technical problem that when a multifunctional pneumatic extinguisher mentioned in the background technology conducts fire extinguishing work, a fire source is usually extinguished through pure wind power is solved.

The invention relates to the field of diesel engine production and manufacturing, and discloses a high-speed diesel engine cylinder cover pumping tool which comprises a bottom plate, a rubber gasket is connected to the top of the bottom plate, a cylindrical pin is connected to the top of the rubber gasket, specially-made screws are connected to the top of the cylindrical pin at equal intervals, and 1-shaped nuts are connected to the tops of the specially-made screws through gaskets. The top of the rubber gasket is connected with a pressing plate gasket through a pressing plate. The high-speed diesel engine cylinder cover pumping tool can pump air, switching of the two modes is simple and convenient, the tool does not need to be disassembled many times, detection work of related cavities can be completed, quality accidents caused by leakage in a cylinder cover are reduced, safety in the construction process is improved, faults are rapidly removed, support is provided for subsequent improvement, and the working efficiency is improved. And foreign expensive and complex tools do not need to be purchased, the economic cost is reduced, and the tool is light in design, convenient to transport, capable of effectively improving the manufacturing efficiency, high in practicability and beneficial to wide popularization.

The utility model discloses a roof side drainage device which comprises an L-shaped bottom plate, the bottom of the bottom plate is communicated with a water outlet, and a rectification grid is fixed to the bottom of the bottom plate. The rectification grating comprises a supporting plate attached to the bottom plate, a protruding rectification cover is arranged in the middle of the supporting plate, and drainage ports are distributed in the rectification cover. The drainage device is simple in structure and reasonable in design, the rectification grating is arranged in the drainage device, rainwater on the roof can be rapidly drained, the grating has the rectification function, overlarge vortexes are prevented from being formed, the rainwater and snow water on the roof can be rapidly drained, and large sundries can be effectively blocked.

The utility model belongs to the technical field of straight-fluted round nose knives, particularly relates to a straight-fluted round nose knife capable of quickly discharging chips, and solves the problem that the cost of a user is increased due to the fact that a cutting part and a handle part need to be replaced together after the straight-fluted round nose knife is used for a long time and the cutting part is abraded in the prior art. Comprising a first cutter handle, a first cutter bar is fixedly connected to the upper portion of the first cutter handle, chip grooves are evenly formed in the periphery of the first cutter bar, cutter block mounting grooves are formed in the top ends of the chip grooves, cutting cutter blocks are fixedly mounted outside the cutter block mounting grooves, and cutter block limiting holes are formed in the outer walls of the cutting cutter blocks; a first fixing screw is installed in the cutter block limiting hole in a threaded mode, a cutter block fixing hole is formed in one side of the outer wall of the cutter block installation groove, and a chip removal groove is formed in the outer wall of the upper portion of the cutting cutter block. The parts can be easily disassembled and replaced, the maintenance process of the cutter is greatly simplified, and therefore the use cost is remarkably reduced.

The invention provides a spatial query method and device for an object in a large-scale real-time combat scene, computing equipment and a computer readable storage medium. According to the method, a tight grid layer and a loose grid layer which are uniformly distributed are superposed in a game scene; and positioning the game object into the cells of the specific loose grid layer by using the mapping relationship between the world coordinates and the grid sizes. A mechanism combining coarse screening and accurate measurement is introduced into a specific query process, and most of objects irrelevant to the space are rapidly eliminated; and then, only carrying out accurate geometric collision or distance judgment on the screened candidate objects so as to eliminate misjudgment objects generated by grid boundary division. According to the scheme, the number of objects participating in accurate calculation is greatly reduced through coarse-grained screening of the grid layer, and in combination with an optimized index calculation mode, CPU resource consumption is effectively reduced, and the real-time performance and accuracy of spatial query are remarkably improved.