20results about How to "Eliminate dead spots" patented technology

The invention discloses a layered planning method for indoor autonomous exploration of a mobile robot based on dynamic prediction, and the method comprises the steps: S1, dividing an exploration environment where the robot is located into a plurality of local subspaces, and marking the state of each subspace as an unexplored state, an explored state, an explored state or a semi-explored state according to the data of a sensor and a semantic detection result; s2, establishing a global topological graph connected with each subspace, and planning a global access path by using a traveling salesman problem model; s3, integrating a pedestrian trajectory prediction model in the selected current subspace, and evaluating and selecting a local viewpoint capable of maximizing information gain and minimizing dynamic collision risk based on a prediction result; the method has the beneficial effects that a semi-exploration state and a self-adaptive revisit mechanism are introduced, and when the door is possibly opened, the check is turned back, so that the dead angle of a map is eliminated, and the exploration completeness is improved; pedestrian trajectory prediction is incorporated into viewpoint scoring, and people deadlock is avoided.

The application discloses a high-efficiency water washing tower, and particularly relates to the field of gas-liquid treatment technology of water washing towers, which comprises a tower body, a liquid distributor and a middle section pipe, a supporting frame is fixedly connected to the bottom of the tower body, a front end pipe is fixedly connected to the top of the supporting frame, a gas distribution assembly is arranged between the middle section pipe and the front end pipe, the gas distribution assembly is used for disturbing the internal gas, and the gas in the middle section pipe and the liquid in the tower body are fully mixed and contacted; the gas distribution assembly comprises a partition ring which is installed in the middle section pipe and a spiral pushing rod which is rotatably installed in the front end pipe; the arc convex of the spiral pushing rod is vertically arranged with the coming flow gas, a local high-pressure stagnation area is formed in front of the arc convex after the arc convex is impacted by the flow, and then the gas is radially diffused along the arc convex, the impact and diffusion process can make the large-diameter liquid droplets or agglomerated particle groups in the gas flow to be broken by inertial impact on the arc convex.

The utility model belongs to blast furnace coal injection control valve field discloses a control integration wear -resisting corrosion -resisting valve for blast furnace coal injection uniform regulation and control. The utility model's ball surface is polished by mirror surface, so the surface is extremely smooth and erosion -resistant. When the valve is opened and closed, the ball will rotate 90 DEG, and this rotation changes the flow direction and produces scraping effect, and small coal powder adhered to the surface is entrained into the main stream. At the same time, the hard coating avoids burr or step due to abrasion, and keeps low roughness for a long time, so as to reduce the opportunity of powder retention from the source. The flow channel of the utility model through the ball adopts full diameter, equal diameter structure, and the inlet and outlet use round chamfer, and the turning radius is not less than three times of the pipe diameter. This smooth transition can eliminate the pressure drop and dead angle caused by sharp expansion and contraction, ensure that the high-speed gas-solid two-phase flow always flows along the wall without vortex deposition, thereby reducing the probability of particle residence in local.

The application discloses a kind of phosphogypsum leachate processing method and device, it is related to sewage treatment technical field, comprising: reaction tank and fixedly connected in the inside of the reaction tank support seat, the inside of the support seat is rotatably connected with stirring rod, the top of the support seat is equipped with first drive motor, and the output of the first drive motor is fixedly connected with the stirring rod;Suction aid, located in the inside of the reaction tank, for auxiliary with the sewage at the bottom of the reaction tank is pumped to top and mixed reagent discharge.The application is by being provided with suction aid, so that sewage forms the circulating flow of "bottom-top", this process can avoid the local concentration of bottom sewage due to gravity deposition (or pollutant enrichment) too high, while let top not fully mixed sewage and bottom circulating sewage again contact, so that the sewage concentration in the whole reaction tank is more uniform.

The utility model provides a kind of for circuit board's tin cream printing machine, it is related to tin cream printing machine technical field, including tin cream printing machine body, the top of tin cream printing machine body is equipped with stirring storage mechanism, the right side wall of stirring storage mechanism is equipped with feeding mechanism, the backside wall of stirring storage mechanism is equipped with raw material feeding mechanism, stirring storage mechanism passes through the linkage structure of fixed ring tooth, moving gear, rotating rod and connecting rod, the composite motion of " revolution + rotation" of stirring rod is realized: when servo motor drives rotating shaft rotation, connecting rod drives rotating rod synchronous motion, moving gear is engaged with fixed ring tooth, both do circumferential revolution (cover stirring jar whole area) with rotating shaft.

This utility model discloses a dust collector hopper unclogging structure, relating to the technical field of baghouse dust collectors. It includes a dust hopper with a folded plate fixedly connected to its right side. A vibration striking mechanism is also provided on the right side of the dust hopper. The vibration striking mechanism includes a corrugated plate fixedly connected to the bottom of the folded plate, the corrugated plate being angled. A fixing plate is fixedly connected to the right side of the dust hopper, and an electric push rod is fixedly connected to the bottom of the fixing plate. A square plate is fixedly connected to the bottom of the electric push rod. The electric push rod drives the square plate and the striking rod to move along the specifically angled corrugated plate, causing the striking rod to generate regular reciprocating lateral vibration that directly acts on the side wall of the dust hopper. This method can effectively transmit mechanical vibration force, generating continuous and multi-directional vibration force, which can effectively break up firmly adhered dust clumps on the inner wall of the dust hopper, solving the problems of insufficient impact force and difficulty in handling sticky and wet clumps caused by a single air-blowing method.

The invention relates to the technical field of space light absorption detection, in particular to a device and a method for detecting gas leakage through a space light absorption method, and the device for detecting gas leakage through the space light absorption method is arranged on the outer wall of a pipeline and comprises a walking shell arranged on the outer side wall of the pipeline. One end of the walking shell is rotationally connected with a pipeline detection assembly, one end of the pipeline detection assembly is provided with a clamping assembly, and the other end of the pipeline detection assembly is provided with a valve detection assembly. The device is suitable for surface crack detection of valves and pipelines, a third driving motor drives a driving gear to rotate to be meshed with an annular tooth groove of a detection frame, so that the detection frame circumferentially rotates around the center of the pipeline, a light absorption detector is fixed to the frame through a double-insertion plate in a matched mode, and a magnetic attraction roller of a walking shell achieves axial movement. A 360-degree three-dimensional detection path is formed with circumferential rotation, the whole area of the valve and the pipeline is covered, traditional detection dead angles are eliminated, leakage of leakage points is avoided, the detection comprehensiveness is improved, and the device can walk automatically and is high in automation degree.

This invention discloses a horizontal rotating fluidized bed boiler, comprising: a main furnace; a frame disposed at the lower part of the main furnace; an air distribution chamber supported on the frame by rolling bearings at its bottom; a drive mechanism fixedly disposed on the frame, its output end being connected to the air distribution chamber for transmission; multiple vertically arranged air distributors in an array, the lower parts of the multiple air distributors being cast together by heavy castable material to form an integral disc structure with a high outer side and a low center; and a dynamic water seal structure, comprising: an annular water tank; and an annular baffle; the annular water tank rotates with the air distribution chamber, while the annular baffle remains stationary, and the outer edge of the disc structure is located above the inner region of the annular water tank. The uniform fluidization of this invention ensures thorough mixing of biomass fuel and air, resulting in more complete combustion and a more uniform temperature field in the main furnace, thereby directly improving thermal efficiency and reducing heat loss from incomplete combustion.

The invention discloses a modularized air supply device and a working method, and relates to the technical field of air supply devices.The modularized air supply device comprises a shell and a pair of air valve mechanisms, a main air inlet is formed in the position, close to the center, of one side of the shell, a pair of air outlets is formed in the bottom end of the main air inlet, a fan air inlet is formed in the bottom end of the shell, and a fan is installed on the fan air inlet; the pair of air valve mechanisms is arranged on the shell. The independent air valve mechanism composed of the electric adjusting valve, the transmission mechanism and the blades is arranged at the air outlets in a matched mode, the electric adjusting valve can receive analog quantity signals to achieve 0-100% continuous accurate adjustment, the complementary control logic of the air valves on the two sides is matched, the air supply amount of each air outlet can be independently adjusted and controlled, the problem of air amount imbalance is solved, and the service life is prolonged. And one-zone-one-strategy zoned air supply according to needs is achieved, and the differentiated ventilation requirements of different process zones are met.

The utility model discloses a mosquito incense smoke generating device for inhalation toxicity test belongs to test equipment technical field, including upper cylinder, with the upper cylinder detachable splicing lower cylinder and the vertical stack placement in the upper cylinder with lower cylinder's several mosquito incense tray, the lower cylinder is equipped with air supply mechanism, the air supply mechanism includes: fan, the fan is fixedly connected with the power source output end of lower cylinder bottom installation, and the power source is used for driving the fan rotation air -blowing, this mosquito incense smoke generating device for inhalation toxicity test makes air be rotated dispersion in the ascending process through the linkage of fan and rotary conveying structure, and each layer mosquito incense tray obtains equal flow, and the combustion speed tends to be consistent, and the smoke concentration fluctuation reduces, and the upper cylinder is locked with the lower cylinder through the snap -on, and the transparent observation window provides real -time field of vision, and the plugging structure can stepless regulation air intake in the midway of test, and even cut off the air completely and make mosquito incense extinguish.

The application discloses a slurry mixing device which effectively solves the problem of uneven mixing of the existing slurry mixing device; the slurry mixing device comprises an upper and lower axial mixing cylinder, a rotatable rotating shaft is coaxially arranged in the mixing cylinder, a plurality of uniformly arranged stirring blades are arranged on the rotating shaft, a communication groove is coaxially arranged in the rotating shaft, a waterfall pipe is arranged at the left and right ends of the lower side of the rotating shaft and is communicated with the communication groove, a plurality of waterfall holes are formed in the waterfall pipe, a plurality of piston cylinders are arranged on the upper side of the rotating shaft and penetrate through the mixing cylinder and are arranged on the outer edge surface and are uniformly distributed along the circumferential direction, a gas conveying pipe is arranged on the piston cylinder and is inserted into the communication groove, an air inlet pipe is arranged above the gas conveying pipe, a movable piston plate is coaxially arranged in the piston cylinder, and a feeding pipe is arranged on the mixing cylinder; the slurry mixing device has the advantages of simple structure, novel design, convenient use and high practicability.

This invention discloses a wide-load zoned regulation system and method for a tubular air preheater. The invention relates to the field of high-efficiency energy-saving technology. The model predictive control multi-objective zoned closed-loop control subsystem takes minimizing the overall exhaust temperature as the optimization objective, uses the constraint that the cold-end pipe wall temperature of each zone should not be lower than the safe reference temperature dynamically output by the zoned ammonium bisulfate phase change early warning model subsystem, and uses the opening degree of the inlet regulating damper and the opening degree of the hot air recirculation targeted regulating valve of each zone as manipulated variables. It solves a constrained quadratic programming optimization problem online and outputs the optimal control quantity for each zone. This invention achieves adaptive weighted multi-objective closed-loop optimization control for each zone through a model predictive control algorithm, dynamically coordinating the safety protection priority of each zone with the overall heat exchange efficiency, reducing the overall air leakage rate by more than 1.5%, and consequently reducing the power consumption of the forced and induced draft fans.

This utility model relates to the technical field of disinfection spray devices, and more particularly to a disinfection spray device, including a connector. The connector includes a four-way pipe, with two insert pipes symmetrically connected to its left and right sides. A delivery hose is fitted onto the surface of each insert pipe. Diverter pipes are symmetrically connected to the front and back sides of the four-way pipe, and spraying components are connected to the ends of the diverter pipes. A lifting device is provided on the surface of the diverter pipe. The nozzles at the bottom of the spray pipe of this utility model adopt a triangular fan-shaped distribution structure, which can expand the spray diffusion angle and eliminate the dead angles of traditional point spraying. A multi-path parallel spraying system is constructed through the diverter pipes and the four-way pipe, achieving synchronous spraying in a three-dimensional space, avoiding missed areas caused by manual spraying. The movable shaft of the lifting device can be pulled out to adjust the height and is fixed with locking bolts, adapting to the different height requirements of different farms and eliminating the need for manual lifting operations.

This utility model provides a self-draining eyelid speculum, belonging to the field of drainage-type eyelid speculum. It includes a main support frame with side frames fixedly connected to both ends. A threaded rod is rotatably connected within the side frames, and two movable blocks are mounted on the threaded rod. A support arm is fixedly connected to the end of each movable block, and a support plate is fixedly connected to the end of each support arm. The support plate is U-shaped, with rounded corners at its bottom. A drainage channel is formed on the inner side of the support arm, and a plug is provided at the end of the support arm. A spiral groove is formed on the side wall of the drainage channel, with a semi-circular cross-section. Multiple diversion channels are formed on the inner side of the support plate, with one end of each diversion channel located inside the drainage channel and the other end having an inlet. Compared to traditional linear drainage channels, this design, through a spatially staggered layout and fluid-optimized structure, reduces the likelihood of drainage channel blockage during ophthalmic surgery.

The invention discloses an automatic stir-frying device for dried pork floss and a stir-frying method using the stir-frying device. The automatic stir-frying device comprises a stir-frying tank which is of a double-layer structure, the bottom of the stir-frying tank is provided with an arc-shaped transition structure, an electromagnetic heating coil is embedded in the double-layer structure, the outer side of the electromagnetic heating coil is wrapped with a heat insulation layer, and a driving motor is arranged in the center of the top of the stir-frying tank. The stirring shaft is connected with an output shaft of the driving motor, penetrates through the cover plate and extends to the tank bottom, a stirring paddle is fixed on the shaft, and the bottom of the stirring shaft is connected with an elastic scraper and is tightly attached to the tank bottom in an arc transition mode. The problem that an existing device is poor in stirring uniformity is solved through the double-spiral stirring paddle, the arc-shaped transition structure is arranged at the bottom of the stir-frying tank and matched with the elastic scraper to synchronously rotate along with the stirring shaft, attached materials at the corners of the bottom of the stir-frying tank are removed, dead corners in the stir-frying tank are eliminated, the material caking rate is reduced, and the bulkiness and the particle uniformity of finished products are improved.

The utility model discloses a kind of impeller water inlet runner, including impeller main body and the main blade being set in the middle part runner in impeller main body, the middle part of the impeller main body is fixed with the shaft core for with external rotating shaft connection, one end of the main blade is fixedly connected with the outer wall of shaft core, the rim of the one side of the main blade is provided with integrally-formed water guide blade, the rim of the water guide blade is provided with integrally-formed first arc-shaped edge;The utility model is by setting first arc-shaped edge in the rim of water guide blade, and setting second arc-shaped edge at the connecting portion of ring wall and shell, the runner of the water inlet of impeller is increased fillet, so that connecting portion thickens, structure is more stable, when liquid enters impeller, it can more smoothly flow through runner, the design of arc-shaped edge can reduce the probability of bubble generated due to liquid flow obstruction, thereby reduce the number of bubble being brought into high pressure area, reduce the erosion degree of cavitation to impeller.

The invention relates to the technical field of flue gas treatment, in particular to a flue gas dust removal and desulfurization device for a coal-fired boiler. Comprising a tower body, the tower body is composed of a liquid storage section and an exhaust section on the lower portion, an air inlet and an air outlet are formed in the liquid storage section, a spraying system and a demister are sequentially arranged in the exhaust section from top to bottom, and a water curtain mechanism is arranged in the tower body; according to the invention, efficient primary purification and flow field organization are carried out on flue gas through a water curtain mechanism formed by the flow guide plate arranged at the gas inlet and the water accumulation tank; continuous self-cleaning is realized through a covering water film formed on the tower wall by the annular pipe and the guide plate; the three parts of structures are sequentially cooperated in the tower, and the problems of flue gas pretreatment, equipment scale prevention and efficient reaction phase separation are systematically solved, so that the desulfurization and dust removal efficiency is improved, the operation stability is remarkably enhanced, and the comprehensive energy consumption is reduced.

The utility model discloses a kind of water treatment dead angleless water tank, it relates to water treatment technical field, including water tank, the water tank is spherical structure, the upper portion of water tank is equipped with opening, detachable tank cover is installed at the opening of water tank upper portion, the top of tank cover is fixedly installed with water inlet pipe, the bottom of water tank is fixedly installed with water outlet pipe, the bottom of water tank outer surface is fixedly installed with multiple supporting legs;The middle portion of tank cover top is installed with rotating assembly, tank cover is installed with lifting assembly by the rotating assembly, the inside of lifting assembly is installed with flushing pipe, the bottom end of flushing pipe extends to the inside of water tank.This kind of utility model is through spherical structure design, automatic rotating lifting mechanism and all-around cleaning spray head, effectively solve the problem of dead angle that traditional water tank exists, improve cleaning efficiency and water quality safety.

The utility model relates to woodcarving processing technical field discloses a woodcarving dust collector type, including the cabinet, both sides of cabinet all are fixedly connected with the installation box, two the upper portion of installation box all are fixedly connected with motor no.

The utility model relates to a kind of for the window of clean laboratory space in scientific research experiment building, belong to laboratory window technical field, solve the problem of existing technology laboratory observation window and building window appearance structure are not unified, difficult to clean, easy to pollute.The utility model includes window frame, integrated installation component, energy-saving outer window glass and observation window glass, window frame and integrated installation component are located in window hole, window frame is located in the front of integrated installation component, integrated installation component is equipped with two, two integrated installation components are located in the upper and lower sides of window hole respectively;Integrated installation component is equipped with at least two strip grooves, energy-saving outer window glass is installed in the strip groove close to window frame, observation window glass is installed in remaining strip groove;Energy-saving outer window glass and observation window glass are sealed between window frame, integrated installation component, window hole side wall using multilayer high elasticity sealing rubber strip and structure glue.The utility model is integrated design, and good sealing.