45results about How to "Effective traffic control" patented technology

The invention relates to waterless stemming and a preparation method thereof. The waterless stemming is a fireproof, corrosion-resistant, washing-resistant and wear-resistant material for blocking an iron notch and filling iron notch gaps and cracks having various shapes. The waterless stemming has the advantages that 1, the waterless stemming does not yellow, does not produce black smoke, reduces benzpyrene content to a value less than 0.01% and has good filling performances, contractibility and sintering properties, 2, strength is high and stable blast furnace conditions are kept, 3, iron is produced stably, the iron notch can be opened easily, the pore is not broadened, melt iron flow and flow velocity can be effectively controlled, and strong slag resistance, erosion resistance and washing resistance are obtained, 4, the hearth is protected, crack is not produced in fast heating and high bonding strength of novel and old stemming is high, 5, opening performances are good and a boring process can be carried out easily by a tapping machine drill bit, 6, plasticity is good and clay gun operation and iron notch mud drum formation are convenient, and 7, a certain micro-expansion performance is obtained at a high temperature, gas permeability is good, strength is high and molten iron seepage caused by stemming contraction is avoided.

The invention discloses a novel power battery pack system based on fuzzy PID control and a control method thereof. The system comprises a battery management system, a cooling liquid circulating main pipeline, cooling liquid primary / secondary branch pipes, cooling liquid flow control valves, primary / secondary spherical liquid distribution pivots and s-shaped flat heat exchange pipes. The cooling liquid circulating main pipeline is communicated with a cooling liquid primary branch pipe through a primary spherical liquid distribution pivot, and the cooling liquid primary branch pipe is connectedwith a cooling liquid secondary branch pipe through a secondary spherical liquid distribution pivot. The tail end of each cooling liquid secondary branch pipe is connected with two s-shaped flat heatexchange pipes which are arranged on the outer surface of the battery cell at an interval of 180 degrees, and a cooling liquid flow control valve is arranged on each cooling liquid primary branch pipeand is driven by a stepping motor controlled by a fuzzy PID controller. According to the invention, the power battery pack can be controlled to always work in the optimal temperature range; the balance of the internal temperature of the battery pack is ensured; the disadvantage of unbalanced overall temperature of the battery pack is solved; and the service life is prolonged.

The invention discloses an unmanned aerial vehicle-based intelligent traffic management and control system. The system comprises a control system, a traffic signal lamp, an unmanned aerial vehicle with a loudspeaker, a camera and a plurality of LED display screens, and a traffic flow detector. On one hand, the control system is electrically connected with the traffic signal lamp and the traffic flow detector. On the other hand, the control system is in wireless communication with the unmanned aerial vehicle through a wireless communication module. The control system is connected with a timing module. According to the invention, based on the fact that the unmanned aerial vehicle has the characteristics of being high in flexibility, flying without obstacles, looking down from a height and strong in cruising ability, the switching time of the intersection traffic signal lamp can be controlled according to the actual traffic flow condition. Therefore, the purpose of effectively controlling the vehicle traffic is achieved. Meanwhile, follow-up vehicles can make the preparation for slow speed and bypass in advance, so that the driving safety is guaranteed. The situation that the congestion is further intensified is avoided. Moreover, the switching time of the traffic signal lamp can be flexibly and flexibly controlled according to different time periods.

The invention belongs to the technical field of aluminum alloy inspection, and in particular, discloses a 4G base station aluminum alloy radiator profile extrusion mold. The extrusion mold comprises an upper mold part and a lower mold part (3); and the upper mold part and the lower mold part (3) are superposed to form the extrusion mold. The extrusion mold is characterized in that a feed port is formed in the end surface of the upper mold part; the feed port is provided with division holes (2) and guide holes (5); the division holes (2) and the guide holes (5) are arranged side by side in parallel; a mold hole is formed in an extrusion mold cavity of the lower mold part (3), and comprises a tooth piece part (4) and a baseplate part (8) communicating with each other; the tooth piece part (4) is corresponding to one guide hole (5) in the upper mold part; and the baseplate part (8) is vertically corresponding to the multiple division holes (2) in the upper mold part. The extrusion mold extrudes a radiator profile through a complete extrusion method to finally improve the heat dissipating performance of a radiator and to satisfy the 4G base station development demands so as to solve the problem of weak performances in a traditional inserted piece type radiator.

The invention discloses a construction method for a road surface water stabilizing layer and an ancillary project. The construction method comprises the steps that a road trough is checked and accepted, specifically, the road trough of a to-be-constructed road section is subjected to checking and accepting; drainage construction is performed, specifically, a transverse water drainage pipe is buried, and a longitudinal gutterway is arranged; cushion construction is performed, specifically, a cushion is paved to form a bed course; road shoulders and central separating area construction is performed, specifically, slip form construction is performed on both side edges and the center of a road surface to form a shoulder strip foundation and a central separating area canalization retaining wall; the construction of earth up, greening and separation of the water stability layer is performed, specifically, the road shoulders are subjected to earth up and greening and the water stability layeris subjected to paving according to the separation of the shoulder strip foundation; anti-collision guardrail construction is performed, specifically, a New Jersey barrier is installed on a upper base layer; and surface layer construction is performed, specifically, the road surface is subjected to paving of an asphalt surface layer. According to the construction method for the road surface waterstabilizing layer and the ancillary project, a working surface of the water stability layer is not polluted, the construction image is good, the construction is compact, traffic control can be performed reliably, and the construction efficiency is high.

The invention discloses a system for generating medium-pressure high-temperature steam through printing and dyeing wastewater afterheat. The system comprises a printing and dyeing wastewater pool, a centrifugal pump, a first tube-shell heat exchanger, a second tube-shell heat exchanger, a cold water conveying pump, a cascade heat pump unit, a high-temperature hot water recycling system, a hot water conveying pump, a flash tank, a steam compressor, a cooled sewage discharging pool and a plurality of pipelines. By using a large amount of afterheat in printing and dyeing wastewater and combiningwith afterheat of multiple equipment in the process, the medium-pressure high-temperature steam which can be reused is generated, reduction of the environmental pollution is facilitated, the cost is reduced, and the economic benefits are improved. By using the tube-shell heat exchangers, blockage and corrosion of the printing and dyeing wastewater to a heat pump are reduced, and meanwhile a tube-shell heat exchanger system can effectively control the flow and the temperature of the tube-shell heat exchangers, so that the stability of a heat pump system is further improved.

The invention belongs to the technical field of glass forming, particularly discloses a glass forming device and a forming method for large-diameter neodymium-doped phosphate laser glass. The invention aims to basically avoid cracks on a glass surface caused by moisture in air while ensuring glass forming effect. According to the glass forming device, a defined forming cavity can be closed as much as possible by arranging a cover plate; protective gas can be introduced into the forming cavity through an arranged protective gas pipeline so as to expel air in the forming cavity and protect molten glass to be formed, so moisture in the air is prevented from entering the surface and the sub-surface layer of glass again in the form of OH<->, and the generation of glass surface cracks caused by entry of the moisture is basically avoided; and meanwhile, a preheating pipeline section of the protective gas pipeline is distributed on the cover plate in a winding manner, so the protective gas can be preheated by utilizing heat transferred by the cover plate, and the situation that the normal forming of the glass is influenced due to the fact that the temperature of the protective gas is too low and the forming temperature in the forming cavity is greatly disturbed is avoided.

The invention discloses a cyclone air distribution fluidized bed, which comprises a cyclone air distribution mechanism. The cyclone air distribution mechanism comprises a supporting plate, a fixing plate and a plurality of air distribution plates, wherein the supporting plate is of a circular structure, each air distribution plate is connected with the supporting plate and the fixing plate, the plurality of air distribution plates are circumferentially distributed on the periphery of the supporting plate, the supporting plate, the fixing plate and all the air distribution plates form a circular structure, the air distribution plate comprises a first horizontal part, an inclined part and a second horizontal part which are connected in sequence, the first horizontal part is parallel to the second horizontal part, and for any two adjacent air distribution plates, the first horizontal part in one air distribution plate and the first horizontal part in the other air distribution plate are located on the same horizontal plane, and a gap is formed between the first horizontal part in one air distribution plate and the second horizontal part in the other air distribution plate. The problemthat an existing air passing plate enables materials and hot air not to make full contact can be solved, air resistance is reduced, the bed collapse phenomenon is prevented, and the materials are prevented from flowing back into the bottom barrel.

The invention relates to a large-scale soilless culture nutrient solution management system. The large-scale soilless culture nutrient solution management system comprises a nutrient solution circulating tank, a nutrient solution state detecting device, a nutrient solution state regulating device and a control system and is characterized in that the nutrient solution circulating tank is used for providing a nutrient solution for a soilless culture facility; the nutrient solution state detecting device is mounted in the nutrient solution circulating tank and used for detecting the nutrient solution state in the nutrient solution circulating tank and transmitting the detected value to the control system; the nutrient solution state regulating device is communicated with the nutrient solutioncirculating tank, and the control system controls the nutrient solution regulating device to regulate the nutrient solution state in the nutrient solution circulating tank according to the detected value. The large-scale soilless culture nutrient solution management system has the advantages that by detecting the nutrient solution state in the nutrient solution circulating tank and using the nutrient solution state regulating device to regulate the nutrient solution state, automatic omnibearing management and control of the nutrient solution of the soilless culture system of fruit and vegetables of different varieties can be achieved, and stable and efficient production of the large-scale soilless culture device can be achieved.

The invention belongs to the technical field of energy recovery, and particularly relates to a deceleration strip energy utilization device based on a hydraulic loop. The deceleration strip energy utilization device based on the hydraulic loop comprises a deceleration strip energy collection device and a power generation module, wherein the deceleration strip energy collection device comprises a deceleration strip, a deceleration strip resetting device and a plurality of hydraulic cylinders arranged below the deceleration strip; the hydraulic cylinders, electromagnetic valves, an energy storage device, energy accumulators, a hydraulic motor and an oil tank form the hydraulic loop; and the device further comprises a controller and a pressure detection device, wherein the pressure detectiondevice is used for detecting the pressure of the outlet end of the first energy accumulator and the outlet end of the second energy accumulator, and the pressure detection device and the electromagnetic valve are electrically connected with the controller. According to the deceleration strip energy utilization device, the common energy accumulators in hydraulic pressure are utilized to fully playthe role of the energy accumulators, and by means of pressure sensors and control of the controller, high-energy storage is achieved; and furthermore, the flow is effectively controlled, long-time stable power generation is achieved, and the trend of the current industrial automation is met.

A circular tube conveyor material flow control device comprises a pre-tensioning counterweight device, a fastener, a baffle, an adjusting plate, an adjusting linkage plate, a joint ring, a shaft, a fixing plate, a fixing ring, a sealing plate, a pin shaft, a first cotter pin and a second cotter pin. The circular tube conveyor material flow control device is installed at the end of a front section of a material guiding groove B to replace a front curtain of the material guiding groove B. The baffle is made of a steel plate with the thickness being 6 mm. The three faces of the upper portion are connected with an outlet of the front section of the material guiding groove B through a flange, a rectangular opening is formed in the lower portion of the baffle. The outer side of the rectangular opening of the baffle is covered with an adjusting plate assembly. The adjusting plate and the adjusting linkage plate are connected through a fastener. The pre-tensioning counterweight device is connected with the shaft. The adjusting linkage plate is connected with the shaft through the joint ring, the pin shaft and the first cotter pin. The shaft is connected to the baffle through the fixing plate. The two ends of the shaft are sealed and welded through sealing plates. The device can effectively control material flow, the materials can uniformly enter a circular tube, the filling rate is close to a theoretical filling rate, explosion of a circular tube conveyor is avoided, and the device is applied to the field of bulk material conveying devices.

The invention discloses a lubricating oil system of a gas turbine. The lubricating oil system of the gas turbine is characterized in that a main pump and an auxiliary pump are used for providing lubricating oil for a main oil supply pipeline, oil discharged from an oil distribution valve block respectively enters a to-be-lubricated part of the gas turbine according to flow requirements to cool andlubricate the to-be-lubricated part, and another branch of oil is led to a main pump pre-lubrication pipeline, and enters a pump cavity of the main pump through a main pump pre-lubrication one-way valve and a main pump pre-lubrication flow limiter on the main pump pre-lubrication pipeline to pre-lubricate the main pump. According to the lubricating oil system of the gas turbine, before the gas turbine is started, the main pump does not work, the main pump can be pre-lubricated, the service life of the main pump is effectively prolonged, the main pump pre-lubrication flow limiter on the main pump pre-lubrication pipeline can effectively control the pre-lubrication flow of the main pump, and the main pump pre-lubrication one-way valve can prevent the pumping-out flow from leaking when the main pump operates.

The invention relates to a single-sliding-vane rotary displacement pump which comprises cavity clamping plates, a power shaft, a stator, a rotor and a sliding vane, wherein the axis of the power shaft is a rotating axis, the cross section of a stator cavity is perpendicular to the rotating axis, the rotor is bias arranged in the stator cavity and is tangent with the stator cavity, a cross-section inner circling curve of the stator is formed by using any one point on the rotating axis passing by the stator cavity as an original point and establishing smooth transitional connection of all points in a rectangular coordinate system on a plane perpendicular to the rotating axis, the coordinate system divides the plane into four quadrants, the bottom surface radius of the rotor is R, the length of the sliding vane is 2S, an included angle is t, the t ranges from 0 to 90, and the points are obtained through a calculation formula. The length of a line section formed by any straight line passing by the original point and perpendicular to the rotating axis and two intersection points of the inner circling curve is always equal to the length of the sliding vane. By the adoption of the technical scheme, the single-sliding-vane rotary displacement pump has the advantages of being simple in manufacturing process, low in cost, good in sealing performance and suitable for high-speed and low-speed operation.

The invention discloses an intelligent traffic management and control system, comprising a control system, traffic signal lights, cameras and traffic flow detectors. The traffic signal lights, the cameras and the traffic flow detectors are arranged at crossroads which are very likely to be crowded. The vehicle incoming lane at the previous crossroad of the crossroads likely to be crowed is provided with a voice broadcasting module, an electronic display screen and an electronic speed reducing and slow drive prompting board respectively on one side. The control system is electrically connected with the traffic signal lights, the cameras and the traffic flow detectors on one hand, and is electrically connected with the voice broadcasting module, the electronic display screen and the electronic speed reducing and slow drive prompting board on the other hand. The control system is connected with a timing module. According to the invention, it is possible to control the traffic signal lights at crossroads to change time according to the actual traffic flow conditions so as to realize the effective management and control of the vehicles for their passage; and at the same time, the subsequent vehicles can make preparations in advance, such as speed reducing and slow driving and even detours. In this manner, the traveling security of vehicles can be ensured; and the further traffic jam does not get worse; and the changing time of the traffic signal lights can be flexibly and conveniently controlled according to the different time periods.

The invention provides a multi-purpose valve device. The device comprises a valve body and a valve element; a spigot is formed in the valve body and is closely clung to the outer tapered surface of the valve element; the valve element is compressed into the spigot through a valve element core and a sealing pad; a rod arranged at the bottom part of the valve element passes through a hole in the bottom part of the valve rod and then extends out from the valve body; a spring is arranged on the rod; a nut is screwed to threads in the rod to compress the spring; a plurality of inlets are formed in one end of the valve body, and while a plurality of outlets are formed in the other end of the valve body; filters are arranged in the inlets; each inlet is connected with a solution source or an air source through a pipe joint or a connecting pipe; each outlet is connected with a water faucet or a spiral groove injection head through the pipe joint and the connecting pipe. According to the multi-purpose valve device, the valve element communicates with one or a plurality of inlets and one or a plurality of outlets of different specifications in the valve body to control solution flow rate as requirement; the device has the advantages of being simple in structure and convenient to operate; people can accurately control the dosage and save the resource.

The invention discloses a high-temperature-resistant valve. The high-temperature-resistant valve comprises a fixed baffle and a movable baffle, the inner part of the valve is divided into a high-temperature chamber and a low-temperature chamber by the fixed baffle, the fixed baffle comprises a first high-temperature baffle, a first heat insulation layer and a first low-temperature baffle, the first high-temperature baffle is close the high-temperature chamber, the first low-temperature baffle is close to the low-temperature chamber, the structure of the movable baffle is the same as that of the fixed baffle, an opening which is matched with the movable baffle in shape is formed in the fixed baffle, a sliding positioning rod across the high-temperature chamber and the low-temperature chamber is arranged at the opening, and the movable baffle moves in the axial direction of the sliding positioning rod. According to the high-temperature-resistant valve, the baffles and the heat insulationlayer are arranged between the high-temperature chamber and the low-temperature chamber, only the baffle of the high-temperature chamber needs to be able to bear high temperature, the baffle of the low-temperature chamber can be made of conventional materials, the cost of the high-temperature-resistant valve can be saved, and the flow can be effectively controlled by adjusting the opening degreebetween the movable baffle and the fixed baffle; and the high-temperature-resistant valve has the characteristics of low cost, good heat insulation effect, simple operation and the like.

The invention relates to an automatic weighing device for traditional Chinese medicine decoction pieces. The automatic weighing device comprises impellers and a driving motor which are horizontally placed; the upper portions of the impellers are partially blocked; a base plate horizontally fixed is arranged below the impellers; an opening is formed in the base plate; the opening is located below ablocking piece; a weighing hopper is further arranged below the opening; one side of the weighing hopper is fixed onto a weighing sensor; the weighing sensor is fixed onto a device structural body; the bottom part of the weighing hopper is provided with a movable door; the movable door is provided with a stop plate; a door opening motor is further fixed onto the device structural body; a shaft ofthe door opening motor is provided with a shifting block; a controller is further arranged in the device; under the control of the controller, a medicine material enters from parts, not blocked, of the upper portions of the impellers, is driven by the impellers rotating, falls from the position of the opening in the base plate, and enters the weighing hopper; the weight of the medicine material in the weighing hopper is measured in real time by the controller, and the speed of the driving motor for the impellers is controlled; when the weight of the medicine material reaches or approaches toa preset target value, the impellers stop rotating; the door opening motor is started, and the stop plate on the movable door is shifted by the shifting block, so that the movable door is opened, andthe medicine material in the weighing hopper is delivered out; and the controller of the device is connected with a dispensing system through an industry network, receives a control command from the dispensing system, and executes tasks of weighing and medicine delivery.

The invention discloses an aromatic slow release device arranged in VR glasses. The device comprises a first support mechanism, wherein the first support mechanism comprises a bottom frame and a first adjusting part, two connecting pressing rods slidably penetrate through the top of the bottom frame, the first adjusting part is arranged on the bottom frame, a second support mechanism comprises a top frame and a second adjusting part, and the top frame is arranged on the two connecting pressing rods. According to the VR glasses, a first supporting mechanism and a second supporting mechanism can be selected for use according to the actual structure in the VR glasses, then equipment can be effectively and stably arranged in the VR glasses, a proper amount of aromatic is put into a taken-out storage frame, then the storage frame carrying the aromatic is placed between an air guide frame and a mounting frame again, and then a first fan is started, so that the first fan can effectively inject air in the VR glasses into the storage frame through an air inlet groove, and the flowing airflow injected into the storage frame can carry the smell of the aromatic to be injected into the air guide frame through an air inlet hole.

The invention discloses a device and a method for producing high-molecular polymer. The method comprises the following steps of successively placing polymer raw materials in a reaction still and uniformly stirring, closing the reaction still after 30 minutes, and placing the stirred solution in a soft plastic pipe, wherein the generated heat is taken away by cold water circulation of the reaction still in a stirring process. The soft plastic pipe solves an problem of solution polymerization to facilitate next processing; meanwhile, the soft plastic pipe with the solution is placed in a thermostatic water bath, and the radiating problem of the solution in polymerization is solved through the application of the thermostatic water bath; meanwhile, when the polymerization temperature of the solution is not high enough, the solution in the soft plastic pipe can be heated, a temperature control system realizes the effective control of the temperature and flow, a polymer reaction is smooth and steady, the polymerization problem is prevented, the formed polymer is large in molecular weight and good in property, the production process is simple, and the device and the method have high popularization and application values.

The invention discloses a traffic guidance method based on a traffic information center information processing technology, and relates to the field of traffic information processing. According to theinvention, a video detection system transmits the video information to a traffic information center through a video transmission device, the traffic information center sends the video information to an information processing system for data analysis, and then a central control system transmits the video information to a large-screen display system, and a real-time positioning system sends the monitored congestion information to the traffic information center, the traffic information center analyzes the congestion information through the information processing system and provides at least one command scheme to the central control system, and the central control system transmits the command scheme to a vehicle terminal system. According to the invention, through the traffic data processing and the vehicle tracking and monitoring, a route plan for reasonably avoiding a congested road section is formulated, and the traffic congestion condition is relieved.

The invention discloses a high-risk area traffic command platform based on UAV projection and a command method thereof, which can realize the setting of a conspicuous front command platform in the middle of the road in a high-risk area, and a safe rear command platform in a nearby safe position. And the remote control drone in the sky monitors the surrounding vehicle conditions in real time, and the monitoring video is sent back to the rear command platform in real time, and displayed to the traffic police on the rear command platform in the form of simulation. The traffic police can conduct targeted and effective command on the scene according to the monitoring content At the same time, through the whole process of video recording, it is transmitted to the front command platform for air projection after video processing, and the real-time command of the traffic police in the rear is projected to the front. At the same time, the effect of the auxiliary sprayer is greatly improved. It clearly captures the projected command content, and has the characteristics of low delay and fast response. On the premise of ensuring effective traffic command, the life safety of traffic police is guaranteed to the greatest extent.

The invention belongs to the technical field of glass forming, and specifically discloses a glass forming device and a forming method of large-diameter neodymium-doped phosphate laser glass, aiming at ensuring the glass forming effect and basically avoiding glass surface cracks caused by moisture in the air. The glass forming device can make the surrounding forming cavity as closed as possible by setting the cover plate, and the protective gas can be introduced into the forming cavity through the set protective gas pipeline to drive away the air in the forming cavity and form a protection for the glass liquid to be formed. prevent moisture in the air from OH ‑ The form re-enters the surface and sub-surface layers of the glass, basically avoiding the occurrence of cracks on the glass surface; at the same time, by distributing the preheating pipe section of the protective gas pipeline on the surface of the cover plate, the heat transmitted by the cover plate can be used Preheat the protective gas to prevent the temperature of the protective gas from being too low to cause a large disturbance to the molding temperature in the molding cavity and affect the normal molding of the glass.

The invention relates to a remote control corundum smelting furnace. The remote control corundum smelting furnace comprises a furnace body. A furnace chamber is formed in the furnace body. Electric heating devices are arranged in the furnace chamber. A blockage hole is horizontally formed in the middle of the side wall of the furnace body and communicated with the furnace chamber. A drain hole is formed in the lower end of the blockage hole, one end of the drain hole is communicated with the blockage hole, and the other end of the drain hole is communicated with the outer side of the furnace body in an obliquely-downward mode. A blockage plunger is arranged in the blockage hole, a permanent magnet is arranged in the blockage plunger, one side of the blockage plunger is provided with a first magnetic body and a second magnetic body, the first magnetic body and the second magnetic body are fixedly connected, a combination of the first magnetic body and the second magnetic body can rotate, the first magnetic body magnetically attracts the blockage plunger, and a magnetic field of the second magnetic body repels that of the blockage plunger. A diversion groove is formed below the end, communicated with the outer side of the furnace body, of the drain hole, and a movable receiving packet is correspondingly arranged below the obliquely-downward side of the diversion groove. Continuous work, remote control and operation safety can be achieved, and the operation environment can be improved.

The invention discloses an atomizer. The atomizer comprises a base, a box is arranged on the base, and a power switch is arranged on the front face of the right edge of the box; a timer rotary knob and an atomization amount adjustment rotary knob are arranged nearby the power switch, a water level control lamp and an operation indication lamp are arranged on the upper face of the power switch, anda clamping head is arranged at the left edge of the box; a large atomization cup is placed at the clamping head, a temperature controller is arranged at the bottom of the large atomization cup, and compression blocks are arranged at the two sides of the large atomization cup; an ultrasonic transduction sheet is fixed to the bottom of the large atomization cup through a fixing screw, a heat dissipation sheet is arranged on the lower face of the ultrasonic transduction sheet, and a cover is arranged on the large atomization cup; the cover is provided with a water absorption resin layer, a mistdischarge port is formed in the middle of the cover, and a partition sheet is arranged at the mist discharge port and connected with an air conveying hose; a quantitative controller is arranged at anoutlet of the air conveying hose. The atomizer is simple in structure and convenient to use, excessive moisture can be removed, the noise is low, the medicine liquid is controlled within a certain temperature range, and excessively-high temperature is prevented during inhalation of a patient.

The invention discloses a water pump adjusting inner circulation flushing system which comprises a pump pressure water chamber high-pressure cavity, a sealing cavity and a sealing flushing groove connecting the pump pressure water chamber high-pressure cavity and the sealing cavity, wherein the pump pressure water chamber high-pressure cavity and the sealing cavity are formed in a pump shell. An adjusting device for controlling the aperture of the overflowing section of the sealing flushing groove is arranged on the pump shell. With the adjusting device, the water pump adjusting inner circulation flushing system can freely control flushing liquid in the sealing cavity, effectively control the flow of the flushing liquid in inner circulation of the water pump, therefore, leakage of the liquid in the sealing cavity can be reduced, the breakdowns of damage of sealing parts and the like are prevented, raised cost brought by using externally-connected flushing pipes can be reduced, and the requirements for reducing cost and improving flushing performance are met.

The invention provides a real-time traffic management system based on a database management system. The system comprises an information collection part and a system control part, the information collection part obtains and analyzes vehicle density information, vehicle overweight information, vehicle overspeed information, parking line pressing information and road surface damage information, and transmits the information to the system control part. Therefore, the colors of traffic lights are controlled, and a picture acquisition and storage device is controlled to take pictures and record and upload the pictures to a traffic police system. By adopting the technical scheme of the invention, real-time data transmission and effective traffic guidance are realized, traffic police can be partially replaced to carry out guidance at the intersection, the participation quantity and the working intensity of the traffic police are greatly reduced, the potential safety hazard of the traffic police participating in the traffic guidance is reduced, intelligent traffic regulation and control are realized, the traffic pressure is favorably relieved, traffic resources are reasonably utilized, and the method is suitable for large-scale popularization and application.

The invention relates to a method for controlling the flow of a corundum smelting furnace through a magnetic body. The remote control corundum smelting furnace comprises a furnace body, a furnace cavity is formed in the furnace body, and an electric heating device is arranged in the furnace cavity. A blocking hole is horizontally formed in the middle portion of the side wall of the furnace body and communicates with the furnace cavity. A draining hole is formed in the lower end of the blocking hole, one end of the draining hole communicates with the blocking hole, and the other end opening of the draining hole obliquely and downwards communicates with the outer side of the furnace body. A blocking plunger is arranged in the blocking hole, and a permanent magnet is arranged in the blocking plunger. One side of the blocking plunger is provided with a first magnetic body and a second magnetic body which are fixedly connected, and the combined body of the first magnetic body and the second magnetic body can rotate. The first magnetic body magnetically attracts the blocking plunger, and the second magnetic body and a blocking plunger magnetic field are repellent. A flow guide groove is formed below the end opening, communicating with the outer side of the furnace body, of the draining hole, and a movable connecting ladle is correspondingly arranged below the oblique and downward side of the flow guide groove. By means of the method, continuous work can be achieved, long-distance control is conducted, work is safe, and the working environment is improved.

The existing large-barrel water pressing device is a product which is characterized in that air is pumped in a barrel to improve air pressure in the barrel, and water in the barrel is pressed out of the barrel by utilizing the fortified air pressure, has the defects that along with the descent of a water surface, more and more air needs to be led in, water is more and more difficult to press, and a water outlet action cannot be interrupted in time when the water is pressed, so that inconvenience is brought to a user. A large-barrel water pressing device with two one-way valves is characterized in that an annular plicated airtight cylinder is adopted as a water storage container; the two one-way valves are respectively arranged on a water outlet pipe and a water absorption pipe; an anti-corrosion spring is arranged in the annular plicated airtight cylinder, so that the adverse effect brought to water quality caused by chemical reaction due to long-time contact of the spring and the water is prevented. When the water is pressed, the flow of water outlet can be effectively controlled, and the labor-saving effect is achieved; when a hand is released, water absorption is carried out by utilizing counterforce of the spring, and the labor-saving effect is also achieved; the system does not take the aim of improving the air pressure in the barrel as the main aim, so that strict requirement on the air impermeability at a joint part of the large-barrel water pressing device and the barrel body does not exist.

The refining high-purity hypereutectic niobium-chromium-containing 8 cast iron device comprises a shell, a refractory lining, a wall layer, a base, a gas diffuser, a ventilation block, a gas inlet pipe, a movable joint, a ladle bottom protection contact, a contact protector, a wire and a cover, the shell wraps the refractory lining, the wall layer is arranged on the outer surface of the refractory lining, the base is arranged at the bottom of the shell, and the gas diffuser is arranged on the base. A gas diffuser and a ventilation block are arranged above the base, the ventilation block wraps the gas diffuser, the gas inlet pipe is connected with the gas diffuser, the movable connector is connected with the gas inlet pipe and fixed to the base, and the bottom wrapping protection contact, the contact protector and the wire form a fireproof lining protection device. The bottom wrapping protection contact is embedded in the fireproof lining, the contact protector is connected with the bottom wrapping protection contact through a wire, and the cover is arranged on the top of the device. The device disclosed by the invention can be used for refining to obtain the high-purity hypereutectic niobium-chromium-containing 8 cast iron, and has a relatively good application value.