30results about How to "Solve the problem of easy dust accumulation" patented technology

The invention discloses a biomass briquette. The biomass briquette is prepared from the following raw materials by weight: 30 to 45 parts of straw, 25 to 35 parts of wood chips, 15 to 25 parts of rice husks, 10 to 15 parts of corncob, 5 to 10 parts of anthracite, 1 to 3 parts of quicklime and 6 to 9 parts of magnesium aluminum silicate hydrate. The invention also discloses a preparation method for the biomass briquette. According to the invention, the biomass briquette and the preparation method thereof can effectively utilize biomass raw materials and have the advantages of simple processing technology, low cost, small density, high calorific value, low ash content, full combustion, etc.

The invention belongs to the technical field of air conditioners, and specifically provides an indoor unit of an air conditioner. The indoor unit of the air conditioner aims at solving the problem that due to the fact that an existing indoor unit is poor in structural design, the air supply experience and the air supply cleanliness are easily affected. For this, the indoor unit of the air conditioner comprises a machine shell, an air guide plate and a multifunctional plate, wherein an air inlet port is formed in the top of the machine shell, an air outlet port is formed in the front lower portion of the machine shell, the air guide plate is arranged at the air outlet port, and the multifunctional plate comprises a connecting plate, and an air scattering plate and an air baffle which are connected with the connecting plate; the connecting plate is connected to a left end cover and / or a right end cover of the machine shell in a pivoted mode, a plurality of air scattering holes are formed in the air scattering plate, the air scattering plate and the air baffle can move to a position close to the air outlet port alternatively, and the air scattering plate is arranged to be capable of scattering air outlet airflow when moving to a position close to the air outlet port; and the air baffle is arranged to be capable of being matched with the air guide plate to carry out air outlet drainage so as to avoid direct blowing when moving to a position close to the air outlet port, and capable of carrying out dust prevention when moving to the air inlet port, so that the comfort degree and cleanliness of air supply are effectively improved.

The invention discloses low-temperature waste heat treatment equipment for dried tail gas. The low-temperature waste heat treatment equipment comprises a tail gas treatment chamber, wherein the tail gas treatment chamber is sequentially equipped with a vacuum flash-evaporation section, a spraying and heat-collecting section, an atomizing and dust-collecting section and an electrostatic dust-collecting section from bottom to top; tail gas enters the spraying and heat-collecting section, heat is enriched by circulating water, the circulating water enters the vacuum flash-evaporation section to generate negative-pressure steam, and the negative-pressure steam is used as a heat source of a vacuum heat pump in the vacuum flash-evaporation section; and after the circulating water is cooled through flash-evaporation treatment, the circulating water is conveyed through the vacuum heat pump and is circulated, cooled tail gas sequentially enters the atomizing and dust-collecting section and theelectrostatic dust-collecting section for being further subjected to dust collection, and part of tail gas which passes through the electrostatic dust-collecting section is introduced into the spraying and dust-collecting section.

The invention relates to the technical field of air conditioners, and particularly provides a wall-mounted air conditioner indoor unit. The problem that due to the fact that an existing indoor unit is poor in structural design, the air supply experience and the air supply cleanliness are easily affected is solved. The wall-mounted air conditioner indoor unit comprises an air guide plate, a first air scattering plate and a second air scattering plate, wherein the air guide plate is a non-porous plate and is arranged at an air outlet, the first air scattering plate and the second air scattering plate are both of a U-shaped plate-shaped structure, the connecting sections of the first air scattering plate and the second air scattering plate are arranged in parallel, a plurality of first air scattering holes are formed in the air scattering section of the first air scattering plate, a plurality of second air scattering holes are formed in the air scattering section of the second air scattering plate, the first air scattering plate and the second air scattering plate can rotate between the dustproof position and the air scattering position through a rotating assembly, the rotating assembly is arranged to enable the first air scattering plate and the second air scattering plate to synchronously rotate and enable the first air scattering plate and the second air scattering plate to relatively rotate, therefore, the dustproof effect is achieved, and meanwhile various air dissipation schemes can be provided according to the actual requirements of users.

The invention relates to the technical field of air conditioners, and particularly provides a wall-mounted air conditioner indoor unit. The problem that due to the fact that an existing indoor unit is poor in structural design, the air supply experience and the air supply cleanliness are easily affected is solved. In order to achieve the purpose, the wall-mounted air conditioner indoor unit comprises an air guide plate, an air baffle and an air scattering plate, wherein the air guide plate is a non-porous plate and is arranged at an air outlet, the air baffle and the air scattering plate are both of a U-shaped plate-shaped structure, the connecting sections of the air baffle and the air scattering plate are arranged in parallel, the air baffle section of the air baffle is a non-porous plate, a plurality of air scattering holes are formed in the air scattering section of the air scattering plate, the air scattering plate is arranged on the inner side of the air baffle, the air baffle and the air scattering plate can rotate between the dustproof position and the air inducing position through the rotating assembly, and the rotating assembly is arranged to enable the air baffle and the air scattering plate to synchronously rotate and enable the air baffle and the air scattering plate to relatively rotate, so that the dustproof effect is achieved, and various air dispersing schemes can be provided according to actual requirements of users.

The invention relates to a man-made board dry waste heat recycle method which includes the following steps: step one, dry tail gas discharged from a cyclone separator is driven by a hot end fan and flows through a tail gas filter, and therefore dust in the tail gas can be filtered; step two, an evaporation section flowing through a heat pipe exchanger is directly emptied when temperature of the evaporation section is reduced after heat exchange; step three, temperature of cold air driven by a cool end fan is raised after a condensation section of the heat pipe exchanger absorbs heat; and step four, the cold air is used as a material drying medium after being heated by a hot oil exchanger or as preheat air to be delivered to a boiler without entering into the hot oil exchanger. The man-made board dry waste heat recycle method has the advantages that a high-efficiency heat exchanger is used to recover waste heat in man-made board dry tail gas, in the process of heat exchange, heat exchange components are in a phase-change heat exchange state, heat exchange intensity is large, and therefore a great deal of low-temperature waste heat can be effectively recovered. A high-efficiency dust remover is arranged in front of the heat exchanger, and therefore the problems that the heat exchanger is prone to dust stratification and blockage and the like are solved.

An electrostatic dust collector oval tube impulse wave type discharge cathode wire comprises a high-frequency oval welded pipe (1). Impulse wave elongated needles (2) which are evenly and symmetrically welded in a staggered mode are arranged on the pipe wall of the high-frequency oval welded pipe (1). The discharge cathode wire is characterized in that an oval piece (4) and an upper hanging piece (5) are welded to the upper end of the high-frequency oval welded pipe (1); a connecting hole is punched in the upper hanging piece (5), and the upper hanging piece (5) is connected and fixed with a top frame (6) through a bolt and a nut by means of the connecting hole; and a guiding ring (3) which is concentric with the high-frequency oval welded pipe (1) is welded in a pipe hole of the lower end of the high-frequency oval welded pipe (1) in a matched mode and is directly inserted into a bottom frame guiding rod (7) at the lower end, and lower end connection is completed. According to the technical scheme, the discharge cathode wire has the advantages of being easy to product and manufacture and rapid and convenient to mount and construct, meanwhile, the discharge inception voltage of the discharge cathode wire is low, the crest spark discharge voltage is high, the electric field intensity is high, and the discharge cathode wire is efficient in dust collection and capable of reducing failures of a dust collector.

The invention provides a dust remover by-pass valve and relates to a dust remover. The dust remover by-pass valve is provided with a power device, a lifting rod, a valve plate and a valve seat. The upper portion of the lifting rod is connected with the power device. The bottom end of the lifting rod is fixedly connected to the top of the valve plate, the valve plate and the valve seat are of annular conical surface structures, and the outer side annular conical surface of the valve plate is in sealing matched connection with the inner side annular conical surface of the valve seat. The valve seat is arranged on the inner side of the inlet position of a dust remover air duct and provided with an elastic sealing material layer. Sealing is achieved through the annular conical surfaces of the valve seat and the valve plate, a sealing coil structure mode of an existing by-pass valve is completely changed, shortcomings of an original sealing mode are overcome, and by-pass zero leakage is ensured. In addition, the manufacture and installation accuracy requirements are low, and the problem that dust easily accumulates on a line-sealed by-pass valve can be solved. Due to the fact that the dust remover by-pass valve is sealed by adopting the annular conical surfaces, the leakage problem caused by thermal expansion and cold contraction in the running process in a line-sealing mode is solved, long-period reliable usage can be ensured, additional sealing gas is not needed, and the dust remover by-pass valve has the advantage of saving energy.

The invention relates to the technical field of air conditioners, and particularly provides a wall-mounted air conditioner indoor unit. The problem that due to the fact that an existing indoor unit is poor in structural design, the air supply experience and the air supply cleanliness are easily affected is solved. In order to achieve the purpose, the wall-mounted air conditioner indoor unit comprises an air guide plate, an air baffle and an air scattering plate, the air guide plate is a non-porous plate and is arranged at an air outlet, the air baffle and the air scattering plate are both of U-shaped plate-shaped structures, the connecting sections of the air baffle and the air scattering plate are arranged in parallel, the air baffle section of the air baffle is a non-porous plate, and a plurality of air scattering holes are formed in the air scattering section of the air scattering plate. The air baffle is arranged on the inner side of the air scattering plate, the air baffle and the air scattering plate can rotate between a dustproof position and an air inducing position through a rotating assembly, and the rotating assembly is arranged to enable the air baffle and the air scattering plate to synchronously rotate and enable the air baffle and the air scattering plate to relatively rotate, so that the dustproof effect is achieved, and various air scattering schemes can be provided according to actual requirements of users.

The invention relates to the technical field of air conditioners, and particularly provides a wall-mounted air conditioner indoor unit. The problem that due to the fact that an existing indoor unit is poor in structural design, the air supply experience and the air supply cleanliness are easily affected is solved. Therefore, the wall-mounted air conditioner indoor unit comprises an air guide plate, a first wind board and a second wind board, wherein the air guide plate is a non-porous plate and is arranged at the air outlet position, the first wind board and the second wind board are both of U-shaped plate-shaped structures, the connecting sections of the first wind board and the second wind board are arranged in parallel, the air blocking section of the first wind board and the air blocking section of the second wind board are non-porous plates, the first wind board is arranged on the inner side of the second wind board, the first wind board and the second wind board can rotate between the dustproof position and the wind boarding position through a rotating assembly, and the rotating assembly is arranged to enable the first wind board and the second wind board to synchronously rotate and enable the first wind board and the second wind board to relatively rotate, therefore, the dustproof effect is achieved, and meanwhile various wind blocking solutions can be provided according to the actual requirements of a user.

The invention discloses a high-efficiency biomass solid pellet fuel. The high-efficiency biomass solid pellet fuel is prepared from corncobs, magnesium oxide, calcium carbide slag, starch, lanthanum oxide, petroleum resin and polyurethane asphalt according to a weight ratio of 100:5-10:5-8:6-10:3-5:5-8:4-6 through crushing, molding and drying processes. The calorific value of the prepared biomass solid pellet fuel product is 24-28MJ / kg, the ash content of the product is 2.5-4.0%, the water absorption rate of the product is 8-10%, and all performances of the product are better than those of current commercial products. A preparation method of the biomass solid pellet fuel has the advantages of simple process, low energy consumption, low production efficiency, high molding rate and low cost.

The invention discloses a novel dustproof plug comprising a plunger matched with an earphone hole and a lighting portion. A power portion is arranged upon the plunger and powered by the earphone hole of a mobile phone through the plunger. The lighting portion is arranged upon the power portion and in bolted connection with the same. An LED bulb is arranged on the lighting portion. In use, the plunger is plugged in the earphone hole so as to power and light the LED bulb. The lighting portion is further provided with a tapered light guide cover and a transparent outer cover around the LED bulb. A circular hole is formed in the lower end of the power portion and provided with a hanging string fixing the dustproof plug and the mobile phone. The plunger is a USB plug matched with a USB interface. The novel dustproof plug has the advantages that the problem of the smartphone that dust easily accumulates in the interfaces is solved, the mobile phone is imparted the lighting function, technique is mature, structure is simple, firm and reliable, cost is low, and promotion and application range is wide.

The invention discloses a progressive coal mine ventilation apparatus with an alarming function. The progressive coal mine ventilation apparatus comprises a shell, a single chip microprocessor and methane sensors, wherein the shell is provided with an air duct, a guide blade is installed below a first retainer net, a guide groove is connected with an air groove, a water passage is installed insidethe shell, a linkage blade is fixedly arranged inside water outlet cylinders, each water outlet cylinder is fixedly provided with a water sprinkling block, each water sprinkling block is provided with water outlet holes, the lower end of the shell is provided with the single chip microprocessor, the single chip microprocessor is connected with a buzzer, the single chip microprocessor is connectedwith the methane sensors, and the methane sensors are installed on the inner wall of the air groove. The progressive coal mine ventilation apparatus with the alarming function adopts a novel structure design to design a structure with the ventilation function, so that the problem that dust is easy to accumulate inside a traditional apparatus can be solved; and meanwhile, by designing a structurewith a uniformly sprinkling function, the problem that a great amount of flying dust is produced when the traditional apparatus works can be solved.

The invention relates to the field of rotary type air supply devices, in particular to an automatic rotary type air supply device. The automatic rotary type air supply device aims at solving the problem that an existing air supply opening is easy to deposit ash. According to the automatic rotary type air supply device, the following scheme are proposed, the device comprises an air pipe, wherein two air inlet pipes are connected to the air pipe, a dust blocking cover is arranged at one end, away from the air pipe, of the inlet pipe, the ash blocking cover is of a rectangular structure and is fixedly connected to the inlet pipe, a circular mounting groove is formed in the ash blocking cover, a filter plate is movably arranged in the mounting groove, a fan-shaped filtering opening is formed in the surface of the filtering plate, a filtering screen is covered on the surface of the filtering opening, a rotating shaft is movably connected to the middle of the filtering plate, one end of therotating shaft perpendicularly penetrates through the filtering plate, and the surface of the filtering plate is fixedly connected with a positioning annular sliding rail. According to the invention,the filter plate is arranged at the pipe orifice of the inlet pipe, so that excessive impurities in the air can be prevented during air supply, most of large-particle impurities can be filtered, and the cleanliness degree of the air supply can be guaranteed.

The invention relates to an intelligent dustproof control indoor unit, an air conditioner and a control method. The indoor unit comprises an air inlet device provided with a dust shield capable of rotating to open or close an air inlet, a PM2.5 sensor for monitoring a numerical value of PM2.5 in air in an environment where the indoor unit is located and a controller having first and second controlmodes; the controller works in the first control mode to control the dust shield to open the air inlet when the indoor unit is started to run and a first preparatory condition is met; the controlleris converted from the first control mode to the second control mode when the indoor unit runs and a second preparatory condition is met; and in addition, under the second control mode, the controllercontrols the dust shield to rotate to be at the opening angle corresponding to the numerical value of PM2.5 according to the numerical value of PM2.5. By means of the intelligent dustproof control indoor unit, the air conditioner and the control method, the movement of a dustproof structure can be intelligently adjusted, the good user experience is achieved, and meanwhile, the problem that dust isprone to being accumulated to the top surface of an existing air conditioner indoor unit is solved.

The present invention relates to an inclined plane outlet type reaction tower capable of enhancing internal circulation. Said reaction tower includes tower body, capacity-expanding cylinder body, capacity-expanding extended cylinder body and gas flow outlet channel. The capacity-expanding cylinder body is the portion which is fixedly connected on the upper portion of said tower body and whose vertical section is made into the form of inverted ladder; the capacity-expanding extended cylinder body is the portion which is fixedly connected with upper portion of capacity-expanding cylinder body and whose cross-section form and area are identical to that of top portion of the capacity-expanding cylinder body, and the gas flow outlet channel is fixedly mounted on the inclined panel of capacity-expanding cylinder body and communicated with said capacity-expanding cylinder body. Said invention can be extensively used in the environment protection and chemical field.

The invention relates to a biomass briquette combustion system. The system comprises a feeding system, a boiler main machine, an economizer, an air preheater, a cyclone dust collector, a bag-type dust collector, an induced draft fan, a chimney and a control system; the feeding system comprises a closed bucket elevator, a closed storage bin, a closed scraper conveyer, a front daily material bin and a screw feeder; a variable-frequency motor is arranged in the screw feeder. Biomass briquette is separated from a combustion fire bed in the boiler main machine through the screw feeder, and the problem of tempering of traditional coal bucket type feeding is completely eradicated; double-layer high-pressure secondary air is designed in the boiler main machine, so that the biomass briquette can be fully combusted in a hearth; a convection section in the boiler main machine is designed to be of a wide-interval, sequential-arrangement and four-return-stroke design structure; the control system is used for automatically controlling boiler feeding, deslagging, hearth temperature, fire grate speed regulation and variable-frequency regulation of the variable-frequency motor and the induced draft fan according to set programs.

The invention discloses a novel monitor. The monitor includes a base, a monitoring box body is fixedly mounted on the base; monitoring equipment is arranged in the monitoring box body; transmission equipment is arranged under the monitoring box body; a sliding groove is fixedly formed in the lower end wall of the base. A first bracket is fixedly mounted on the upper end surface of the monitoring box body; a first supporting rod is fixedly mounted at the left end of the first bracket; a first rotating shaft is fixedly and rotationally mounted at the lower end of the first supporting rod; a first fixed pulley and a first belt wheel are fixedly mounted on the first rotating shaft; a second rotating shaft is rotationally mounted at the left end of the first supporting rod; a first gear is fixedly mounted at the left end of the second rotating shaft; and a second belt wheel positioned on right of the first gear is fixedly mounted in the left end of the second rotating shaft. According to the novel monitor, the problem that dust is prone to being accumulated on a camera is effectively solved, the camera is wiped by the cleaning equipment regularly to remove dust, and when the camera is shielded, the position can be changed for monitoring.

The invention relates to a self-adaptive side sealing device for fuel gas blowing. The device comprises a sintering machine trolley, a seal cover, a fuel gas blowing device and a side sealing device.The sintering machine trolley is located in the seal cover, the fuel gas blowing device is located above the sintering machine trolley, and the side sealing device is of a double-end type structure. The side sealing device comprises a fixing device, a curved bearing plate, an upper sealing plate and a lower sealing plate. The fixing device is arranged on the inner side of the seal cover, and the curved bearing plate is connected to the fixing device. The upper sealing plate is connected to the upper end of the curved bearing plate and is close to the inner side of the seal cover. The lower sealing plate is connected to the lower end of the curved beraing plate and is close to the outer side face of the sintering machine trolley. The double end sealing device capable of achieving real-timeself-adaptive adjustment achieves the purposes of stable production, smooth production and safe production of a whole fuel gas blowing assisted sintering production line.

The invention provides an anti-blocking intelligent ammonia spraying device suitable for an SCR denitration process and a working method of the anti-blocking intelligent ammonia spraying device. The anti-blocking intelligent ammonia spraying device comprises an ammonia supply header pipe, an ammonia separation header pipe, ammonia separation branch pipes, universal spherical nozzles and an intelligent control mechanism. By means of the device, the reducing agent can form multi-level ammonia spraying in the flue, and what is fully guaranteed is that flue gas and the reducing agent are evenly mixed. Through the structural design of the nozzle, the spraying speed is increased, the ammonia gas and the flue gas are fully and uniformly mixed, and meanwhile, the problem that dust is easily accumulated in a traditional nozzle is solved. The rotating direction can be adjusted in real time according to the concentration requirement through the intelligent rotating nozzles, the defect that flow fields of ammonia gas sprayed by adjacent nozzles interfere with each other due to excessive arrangement of traditional nozzles is overcome, and meanwhile the manual operation risk is reduced.

The invention provides a cleaning device and an air conditioner indoor unit with the same. The cleaning device comprises: an opening and closing structure which is used for performing linear reciprocating motion at an opening so as to close and open the opening; a driving mechanism which is connected with the opening and closing structure to drive the opening and closing structure to move; a mounting box, wherein at least part of the driving mechanism is arranged in the mounting box; and a cleaning assembly which is detachably connected with the mounting box, wherein the cleaning assembly comprises a cleaning part, the cleaning part is in contact with the opening and closing structure, and the mounting box receives dust falling off when the cleaning part and the opening and closing structure move relatively. The cleaning device solves the problem that dust is easily accumulated on the surface of an opening and closing structure used for achieving opening and closing of an opening in the prior art.

The invention discloses a self-rotating blowing type ash removal device for an observation window of a coal feeder. The device comprises a self-rotating blowing mechanism and a regulation and control air supply mechanism, the self-rotating blowing mechanism is rotatably arranged in the center of observation glass and comprises a blowing connecting shaft and a self-rotating blowing part, the self-rotating blowing part is rotatably connected with the blowing end of the blowing connecting shaft by arranging a rotating connecting part, an air guide cavity is formed in the center of the self-rotating blowing part, arc-shaped blowing guide holes are evenly distributed in the outer side of the air guide cavity, and the regulation and control air supply mechanism comprises an air supply guide pipe and a regulation and control valve. The device has the beneficial effects that the designed self-rotating blowing mechanism is combined with the regulation and control air supply mechanism, so that the powder accumulation probability in the observation window is almost zero, the coal feeder does not need to be stopped due to the powder accumulation problem or the damage of a scraping strip, and the loss of power generation in a plant caused by stopping the coal feeder due to small defects is effectively reduced. The device is reasonable in design structure, convenient to disassemble and assemble, low in maintenance amount and long in service life.

The present invention relates to an inclined plane outlet type reaction tower capable of enhancing internal circulation. Said reaction tower includes tower body, capacity-expanding cylinder body, capacity-expanding extended cylinder body and gas flow outlet channel. The capacity-expanding cylinder body is the portion which is fixedly connected on the upper portion of said tower body and whose vertical section is made into the form of inverted ladder; the capacity-expanding extended cylinder body is the portion which is fixedly connected with upper portion of capacity-expanding cylinder body and whose cross-section form and area are identical to that of top portion of the capacity-expanding cylinder body, and the gas flow outlet channel is fixedly mounted on the inclined panel of capacity-expanding cylinder body and communicated with said capacity-expanding cylinder body. Said invention can be extensively used in the environment protection and chemical field.

The invention discloses a virtual studio for animation. The virtual studio comprises a bottom plate, the upper surface of the bottom plate is provided with fixing grooves, connecting piles are arranged on the inner sides of the fixing grooves, the upper surface of the bottom plate is provided with side plates and hidden smoke sprayers, reinforcing blocks are fixed to the outer surfaces of the right sides of the side plates through bolts, and the bottom ends of the reinforcing blocks are fixedly connected with the outer surface of the bottom plate through bolts. The outer surfaces of the side plates are provided with a green cloth storage mechanism, a top plate is arranged at the top end of the green cloth storage mechanism, and smoke guide pipes are inserted in the outer surface of the front end of the bottom plate. The hidden smoke sprayers are utilized, so that the photographing difficulty is reduced; green cloths on the wall surface are convenient to store; the surface of a shell iscovered with the second green cloth, and smoke exhaust holes are formed in the lower surface of the shell, so that after the shell is mounted on the bottom plate, normal photographing is achieved, the smoke exhaust holes are not seen, the effect of hiding the smoke exhaust holes is achieved, goofing is reduced, and the photographing difficulty is reduced.

The invention provides an anti-blocking intelligent ammonia injection device suitable for SCR denitrification process and its working method, comprising an ammonia supply main pipe, an ammonia distribution main pipe, an ammonia distribution branch pipe, a universal spherical nozzle and an intelligent control mechanism. Through the device of the invention, the reducing agent can form multi-level ammonia injection in the flue, which fully ensures the uniform mixing of the flue gas and the reducing agent. Through the design of the nozzle structure, the injection speed is increased, the mixing of ammonia gas and flue gas is fully and uniformly improved, and the problem of easy dust accumulation in traditional nozzles is solved. The intelligent rotating nozzle can adjust the steering direction in real time according to the concentration requirement, which solves the defect that the ammonia flow field emitted by adjacent nozzles interferes with each other due to the excessive arrangement of traditional nozzles, and reduces the risk of manual operation.

The invention discloses a double-color rubber mat at the front end of an automobile auxiliary instrument board and a preparation method of the double-color rubber mat. The double-color rubber mat comprises a black rubber layer of a square structure and a red rubber layer located in the center of the black rubber layer. The black rubber layer and the red rubber layer are formed by integral injection molding. The black rubber layer is prepared from the following raw materials in parts by weight: 40-50 parts of TPS thermoplastic elastomer, 10-15 parts of PP, 5-8 parts of paraffin-based filling oil, 5-12 parts of diatomite, 3-5 parts of an impact modifier, 5-10 parts of a binder, 12-15 parts of a phosphorus / nitrogen / silicon ternary composite flame retardant, 1-8 parts of a flame retardant synergist and melanin. The double-color rubber mat has the advantage that the flame retardance is improved.

The invention discloses liquid ethylenediamine recovery pretreatment equipment which comprises a mixed reaction box and recovery treatment equipment; a funnel cover is mounted at the bottom of the mixed reaction box and connected with the recovery treatment equipment through a conveying pipe, a recovery pipe is mounted on the recovery treatment equipment, and an electromagnetic valve is mounted on the recovery pipe; a fixed block is fixedly connected to the upper end of the mixed reaction box in a penetrating mode, a negative pressure fan is mounted at the upper end of the mixed reaction box, a first feeding pipe is mounted at the air inlet end of the negative pressure fan, and an air outlet pipe is mounted at the air outlet end of the negative pressure fan; the tail end of an adjustable spray head is closed, spray holes are circumferentially formed in the outer ring of the closed end of the tail end in a surrounding mode, the spraying speed is increased, and meanwhile, the problem that a traditional nozzle is prone to dust accumulation is solved. The liquid ethylenediamine recovery pretreatment equipment is reasonable in structure, can realize full reaction of liquid ammonia steam and MEA steam, and further can provide basic guarantee for recovery of liquid ethylenediamine.

The invention relates to the technical field of street lamps, in particular to a street lamp with a light supplementing structure based on Internet of Things. The street lampcomprises a mounting rod, protective structures are mounted on the upper parts of the left and right sides of the mounting rod, protective grooves are formed in the upper parts of the left and right sides of the mounting rod, rotating plates are movably mounted on the inner sides of the protective grooves, a light-transmitting plate is installed on one side of the surface of each rotating plate in a penetrating mode, a bulb is installed on one side of the light-transmitting plate, a lampshade is installed on one side of the light-transmitting plate, installation grooves are formed in the left side and the right side of the protection groove, a control structure is installed on the inner sides of the installation grooves, a lampshade cleaning structure is installed on one side in the protection groove, and a first pull rope is mounted on the lower surface of the lampshade cleaning structure. Through mutual cooperation of the structures, the remote control function of street lamp networking is achieved, the bulb and the lampshade can be protected under the condition that illumination is not affected in severe weather such as rain and snow, and the service life of the street lamp is prolonged.