55results about How to "Reduce water spray" patented technology

The invention discloses a coal-fired power plant flue gas heat regenerative system and an energy-saving water-saving ultra-clean discharging method. The temperature of the flue gas is reduced to about 90-110 DEG.C through a low-temperature coal economizer, and the recycled flue gas heat heats primary and secondary wind entering a boiler through a steam air heaters, so that the first stage of heat regenerative cycles is achieved. The temperature of the flue gas at the outlet of a desulfurization tower is reduced to 30-40 DEG.C through a vacuum flash evaporation and solidification device and a low-temperature heat pump heat exchange device, and a part of water vapor of the flue gas is condensed and collected, so that water is saved. The low-temperature heat pump heat exchange device absorbs the latent heat released in flue gas sensible heat and condensation processes, and dry as-fired coal and air are heated, so that the second stage of heat regenerative cycles is achieved. A boiler slag discharge system recycles the waste heat of heat slag, and the as-fired coal is heated, so that the third stage of heat regenerative cycles is achieved. When the waste heat is not used up, the remained waste heat can be utilized, so that energy is saved. Low-temperature desulphurization slurry led out from the vacuum flash evaporation and solidification device is injected into the desulfurization tower, so that the desulphurization efficiency is improved, and an ultra-clean discharging objective is achieved.

The invention discloses a reheated gas temperature optimization control method based on multi-variable predictive control. According to the method, the whole hot steam temperature system is regarded as a two-in one-out multi-variable object, and the flow rate of reheated de-superheating jet water and the opening of a flue gas baffle plate are simultaneously controlled by adopting a multi-variable predictive control method; moreover, optimization of economical efficiency of the system is realized by adding a steady state target value of the opening of a reheated de-superheating jet water adjusting valve into optimization indexes of the conventional predictive control. By adopting the multi-variable predictive control method, coordination of side adjustment of flue gas and side adjustment of steam can be better realized, and the dynamic adjusting quality of the reheated steam temperature is further improved; and meanwhile, by adding the steady state target value of the de-superheating water adjusting valve into the conventional predictive control performance indexes, optimization of the de-superheating water jet quantity is realized, so that the circulating efficiency of a unit can be effectively improved.

The invention relates to an arrangement structure of all levels of superheaters of a circulating fluidized bed boiler. The arrangement structure comprises a coal economizer, a steam pocket, a hearth water cooled wall, and a plurality of tail-cladding superheaters, low-temperature superheaters and high-temperature superheaters, wherein the coal economizer is arranged in a convection flue on the tail part of the boiler; the steam pocket is connected with the coal economizer through a pipeline; the hearth water cooled wall is connected with the steam pocket through a pipeline; the plurality of the tail-cladding superheaters, the low-temperature superheaters and the high-temperature superheaters are connected with one another through pipelines to form a closed loop; the high-temperature superheaters are arranged in the hearth of the boiler; and the heat absorption capacity of the high-temperature superheaters is in an amount of 48 to 58 percent based on the heat absorption capacity of an overall superheater system. By using the arrangement structure, the steam temperature and wall temperature properties of all levels of the superheaters of the boiler under various loads are greatly improved; the operating safety of the boiler is improved; and the service life of the boiler is prolonged.

A system and method to reduce water spray from one or more truck tires of a truck driving through rain on a water covered road. A combination centrifuge and air compressor device collects a mixture of air and rainwater, to separate the air from the rainwater and to compress the air. An air distribution manifold system directs the compressed air from the combination centrifuge and air compressor device onto an area of the water covered road in front of one or more of the truck's tires so that the water from the area rises up from the road. Then a shield barrier channels the water that rises up from the area on the road away from one or more of the truck's tires.

The invention relates to an omnibearing sprayer which is provided with a bridge bracket fixedly installed on a motor vehicle box. A hydraulic motor is fixedly installed on the upper part of the bridge bracket. A vertically upward lifting oil cylinder with a piston rod is arranged inside the bridge bracket. A swing oil cylinder is hinged with one end of the piston rod of the lifting oil cylinder. A spraying faucet is fixedly installed at the end of the piston rod of the swing oil cylinder, a roll tube connector is fixedly installed at the root of the lifting oil cylinder, and the spraying faucet is connected with the roll tube connector through a soft tube. With the adoption of the technical scheme, the omnibearing sprayer sprays water in an omnibearing manner, so that not only is the spraying efficiency higher, but also the spraying range is wider. In addition, as the effective water consumption degree is improved, the omnibearing sprayer further has the effect of saving water.

The invention relates to a preparation method and a using method of a plant cultivation medium, and particularly relates to a preparation method and a using method of a dendrobium officinale cultivation medium. The preparation method particularly comprises the following steps of preparing the dendrobium officinale cultivation medium in a simulation manner according to special ingredients required by the growth conditions and the growth environment requirements of wild dendrobium officinale, wherein the medium consists of wood bran, wood processing corner waste material blocks, cow dung, coal balls, EM culture; planting dendrobium officinale seedlings on the medium according to specification requirements after the medium is prepared; planting fresh mosses on the surface of the medium according to the appropriate growth environment with relatively great dampness and attached mosses for the wild dendrobium officinale, wherein not only is the growth requirement of dendrobium officinale met, but also the mosses can effectively moisturize the medium effectively, and the water spraying amount in production is slowed down. Through implementing the preparation method and the using method of the dendrobium officinale cultivation medium, the formed medium is low in cost, is very suitable for the growth requirement of dendrobium officinale, has a good plantation effect, and is suitable for the industrialized, large-scale and integrated manual cultivation production of the dendrobium officinale.

The invention provides a dry-wet combined dual-cooling multi-condition cross-flow closed cooling tower and a regulating method for the running mode of the cooling tower, and belongs to the technical field of cooling by circulating water. The cooling tower comprises a tower body, draught fans, water absorbers, a finned tube bundle heat exchanger, a plain tube bundle heat exchanger, a water spraying system, air inlets, a filler, a water collecting tank, a make-up floating ball valve and a drain valve, wherein the inner cavity of the tower body is divided by the water absorbers into two parts: a left cavity and a right cavity; the draught fans are mounted at the top of the left cavity; a first spraying row tube, the finned tube bundle heat exchanger, a second spraying row tube, a plain tube bundle heat exchanger, the filler and the water collecting tank are arranged in the right cavity from top to bottom; and the first air inlet, the second air inlet and the third air inlet are formed in the right wall of the right cavity from top to bottom. The cooling tower provided by the invention has the advantage that the dry-wet combined dual-cooling multi-condition flexible conversion can be achieved by regulating the number of the draught fans which need to start up, the air inlets, the water amount and the water spraying tow tubes according to changes in the outdoor environment and those in the heat dissipating capacity of cooling water, thereby fulfilling the energy-saving, water-saving and efficient cooling purposes.

A passive containment heat removal system, control method thereof and pressurized water reactor; the passive containment heat removal system comprises an outer containment (2), an inner containment (1), an air duct (200) defined between the inner containment (1) and the outer containment (2) having an air inlet (4) and an air outlet (5), a spraying assembly (10) disposed outside the inner containment (1), a built-in heat exchanger (9) disposed in the inner containment (1), an air cooling channel (171) located outside the outer containment (2) having an air inlet (18) and air outlet (21) of an air cooling channel (171), and an external air cooler (12) disposed in the air cooling channel (171); the inlet of the external air cooler (12) is connected to the outlet of the built-in heat exchanger (9) via a first communication pipe (13), and the outlet of the external air cooler (12) is connected to the inlet of the built-in heat exchanger (9) via a second communication pipe (14).

The invention discloses a flue gas dry desulfurization device. The device is a flue gas desulfurization device. According to the device, water spray amount in the desulfurization device is reduced, such that problems such as wall adhesion and scaling are avoided. The device comprises a flue gas inlet pipe, a desulfurization reactor, a settling chamber, a deduster, and a desulfurization agent recycling device. The flue gas inlet pipe communicates with the inlet of the desulfurization reactor. The outlet of the desulfurization reactor communicates with the settling chamber. A first flue gas outlet and a first desulfurization agent outlet allowing large-particle desulfurization agent to flow out are provided on the settling chamber. The first flue gas outlet communicates with the inlet of the deduster. A second flue gas outlet communicating with the external atmosphere and a second desulfurization agent outlet outputting desulphurization circulation ash are provided on the deduster. The first desulfurization agent outlet and the second desulfurization agent outlet are connected to the desulfurization agent recycling device. The desulfurization agent recycling device delivers recovered desulfurization agent to the inlet of the desulfurization reactor, such that the desulfurization agent can be used in flue gas desulfurization.

The invention discloses a control method of an air purifying device. The air purifying device comprises a shell, a rotating body and a water supply assembly; the rotating body is rotatably arranged inthe shell, the water supply assembly comprises a water tank and a water spraying assembly, the rotating body is suitable for throwing away water outwards through rotation when the water spraying assembly sprays water in the water tank to the rotating body, and the control method of the air purifying device comprises the following steps that the water storage amount in the water tank is detected;the water storage amount is smaller than the first preset threshold value, the water spraying amount of the water spraying assembly is reduced, and the water spraying assembly is controlled to stop running; and the invention further discloses the air purifying device, an air conditioner and a computer readable storage medium. The safety during use of the air purifying device is improved.

The invention relates to a car windscreen wiper, wherein, a strip-shaped air nozzle (2) is mounted in a bracket (1), the air nozzle (2) and the bracket (1) are arranged along the same direction, an airflow channel (3) is arranged on the air nozzle (2) along the direction of the length thereof, the diameter of the airflow channel (3) is reduced gradually from the back to the front, the back end of the airflow channel (3) is communicated with an intake pipe (4), and the front port of the airflow channel (3) is arranged at the end part of the front end of the bracket (1). The car windscreen wiper adopts high-pressure gas to clean up rain, splashed mud and other dirt from the surface of windscreen, so as to avoid scratching the glass surface; meanwhile, the load of a wiper motor is lower when working, the wiper motor is not easy to be damaged and the service life can be prolonged accordingly. The car windscreen wiper can be applied to any vehicle model, even trains, ships, aircraft and other places that need the work of the wiper.

A system and method to reduce water spray from one or more truck tires of a truck driving through rain on a water covered road. A combination centrifuge and air compressor device collects a mixture of air and rainwater, to separate the air from the rainwater and to compress the air. An air distribution manifold system directs the compressed air from the combination centrifuge and air compressor device onto an area of the water covered road in front of one or more of the truck's tires so that the water from the area rises up from the road. Then a shield barrier channels the water that rises up from the area on the road away from one or more of the truck's tires.

The invention relates to the field of dust removers, and provides a novel wet-type electric dust removal device. The electric dust removal device comprises a dust removal chamber and a sewage discharging chamber which are arranged up and down and communicate with each other, wherein the dust removal chamber is provided with two opposite side walls, an air inlet is formed in one side wall of the dust removal chamber, and the other side wall of the dust removal chamber is provided with a defogging area and an air outlet; a plurality of rows of dust collecting polar plates are arranged in the dust removal chamber and in the direction of from the air inlet to the air outlet, wherein a corona wire is arranged between every two adjacent dust collecting polar plates in each row of dust collectingpolar plates, and the coronas are electrically connected with a high-voltage power supply; two spraying pipes are arranged in a V-shaped opening of each dust collecting polar plate; and air enters the dust removal chamber through the air inlet and then is discharged from the air outlet after passing through the defogging area. According to the novel wet-type electric dust removal device, wet typespraying and electrostatic dust removal are combined together, dust is wetted, and the potential safety hazard of a dry type electrostatic dust remover due to the problems of friction, static electricity and the like is effectively solved; and furthermore, spraying is carried out on the backs of the dust collecting polar plates so that a quite small amount of water can form uniform water mist, and therefore, the water spraying amount can be effectively reduced, and dust removal efficiency can be improved.

The invention provides a shaft-seal steam supply system for a secondary reheat unit. The shaft-seal steam supply system comprises a shaft-seal main pipe, an auxiliary steam supply station, an overflowcontrol station, a temperature reduction control station and an electric heating control station; the shaft-seal main pipe is provided with a plurality of first branch pipes which are respectively connected with an ultrahigh pressure cylinder rear shaft seal, an ultrahigh pressure cylinder front shaft seal, a high pressure cylinder front shaft seal, a high pressure cylinder rear shaft seal, a middle pressure cylinder front shaft seal and a middle pressure cylinder rear shaft seal, and the pipeline between the shaft-seal main pipe and the ultrahigh pressure cylinder front shaft seal is provided with the electric heating control station; the shaft-seal main pipe is also provided with a plurality of second branch pipes which are respectively connected with the auxiliary steam supply station,the overflow control station and the temperature reduction control station; and the tail end of the shaft-seal main pipe is also connected with a steam supply port of the low pressure cylinder shaftseal by virtue of the temperature reduction control station. The invention also provides a control method of the shaft-seal steam supply system for the secondary reheat unit. By adopting the shaft-seal steam supply system, the steam supply temperature of each shaft-end shaft seal can be accurately controlled, the power and size of an electric heater can be reduced, and the operation economical performance of the unit can be improved.

The invention relates to a method for dedusting and purifying tail gas of a glass melting furnace. The method comprises the following steps: flue gas at 450-560 DEG C is introduced into a negative pressure header pipe (1) for cooling; the cooled flue gas at 120-400 DEG C enters a spray cooling tower (3), and the temperature of the flue gas at a gas outlet (3d) is reduced to 75-80 DEG C; then the flue gas enters a mixer (4) and a mixing pipe (5) to be mixed and reacted with calcium hydroxide from a negative pressure branch pipe (7), acidic pollutants and redundant water in the flue gas are absorbed, and the temperature of the flue gas is reduced to 65 DEG C or below; then the flue gas enters a bag-type dust collector (6), incompletely-reacted calcium hydroxide and acid gas in the flue gas continue to be subjected to a secondary reaction, and finally the flue gas is filtered by the bag-type dust collector (6) and introduced into a chimney (16) through a variable-frequency fan (14) to beemptied. The method has the advantages that the tail gas is filtered, reacted and dedusted layer by layer, so that the tail gas is emptied after reaching the standard, the deacidification efficiency is improved, materials are recycled, and the operation cost and the system pressure fluctuation are reduced.

Water droplet guiding mechanism for a height-adjustable auto window (1) has a vertically extending holding section (2) that holds the window thanks to opposing side edges (1a), a belt line shaping piece with a near end that attaches to a lower frame of the window opening (20) on the outer side of the vehicle and a distal end that contacts the window. Projections (3) form both end sections of a lower edge (1c) of the window and extend downwards in order to allow water droplets to fall off.

The invention discloses a final-stage reheater temperature adjusting device and an operation method thereof. The final-stage reheater temperature adjusting device comprises a controller, a rotating motor, a driving wheel, a driven wheel, a hydraulic cylinder, a hydraulic cylinder piston rod, a smoke shielding baffle and a power box used for providing electric energy, wherein the smoke shielding baffle is located between a high-temperature superheater in a boiler horizontal flue and a final-stage reheater, an output shaft of the rotating motor is connected with the driving wheel, the driving wheel is matched with the driven wheel, the and driven wheel is connected with the upper end of the smoke shielding baffle; one end of the hydraulic cylinder piston rod is matched with the hydraulic cylinder, and the other end of the hydraulic cylinder piston rod is inserted into the boiler horizontal flue and then connected with the smoke shielding baffle; and the controller is connected with the control end of a piston cylinder and the control end of the rotating motor. According to the device and the operation method of the device, the phenomenon of contamination and slagging of the heating surface of the final-stage reheater in the long-term high-load operation state of the boiler can be effectively relieved, and the operation safety and reliability of a unit are improved.

The invention discloses a lawn watering device with the function of self-adjusting the water spraying direction based on a sunlight illumination area, and relates to the technical field of energy saving and environmental protection. The lawn watering device with the function of self-adjusting the water spraying direction based on the sunlight illumination area comprises a water tank, one end of a water guide pipe is inserted in the bottom of the water tank, the water guide pipe is communicated with an inner cavity of the water tank, a cylinder is welded to the top of the water tank, six water spraying pipes are equidistantly inserted in the top of the cylinder in a surrounding shape, six extension rods are equidistantly inserted in the side surface of the cylinder in a surrounding shape, and three adjusting mechanisms equidistantly sleeve each extension rod in a row. According to the lawn watering device with the function of self-adjusting the water spraying direction based on the sunlight illumination area, thermal energy generated by direct sunlight on a glass cover is adopted as power of the adjusting mechanisms, based on the power source, the adjusting mechanisms are located in the sunlight illumination area, so that normal sprinkling irrigation of the water spraying pipes is not intervened in, and when the adjusting mechanisms are located in a tree shade area, inner cavities of bent water pipes are gradually sealed.

The embodiment of the invention discloses a hole sealing, grouting and water plugging reinforcement method for an anchor cable hole in a roadway water spraying area, and relates to the technical field of coal roadway mining surrounding rock control. Grouting reinforcement can be conducted on an existing anchoring anchor cable hole, so that water spraying of the anchor cable hole is reduced to a certain degree, corrosion of an anchor cable is slowed down, and the anchoring force of the anchor cable in a roadway water spraying area is enhanced. The hole sealing, grouting and water plugging reinforcement method for the anchor cable hole in the roadway water spraying area comprises the steps that a grouting hole is obliquely drilled in the periphery of an existing anchor cable hole in a top plate of the roadway water spraying area towards the interior of the anchor cable hole, and the grouting hole communicates with the anchor cable hole; a grouting pipe and a plugging pipe are inserted into the grouting hole, wherein an annular space is formed between the inner wall of the plugging pipe and the outer wall of the grouting pipe; a high-water-content rapid-hardening expansion material is poured into the anchor cable hole through the annular space in the plugging pipe; and after the high-water-content rapid-hardening expansion material is solidified, grouting is conducted in the deep area in the anchor cable hole. The reinforcement method is suitable for grouting reinforcement of the anchor cable hole in the water spraying area of the weakly cemented soft rock roadway.

The invention belongs to the technical field of fire-fighting equipment, and specifically relates to a fire-fighting spray head and a fire-fighting system with the same. The fire-fighting spray head comprises a spray head body, a sealing assembly, a temperature-sensing release assembly, a water splashing disc, and a flow detection assembly, wherein the spray head body comprises a water cavity anda support body, the water cavity is formed in the top of the support body, and the water cavity is provided with a water inlet port and a water outlet port; the sealing assembly is arranged at the water outlet port; one end of the temperature-sensing release assembly is abutted against one side of the sealing assembly; the other end of the temperature-sensing release assembly is connected with thewater splashing disc, and the water splashing disc is arranged at the bottom of the support body; and the flow detection assembly is located in the water cavity. According to the fire-fighting sprayhead, the flow detection assembly is arranged between the water inlet port of the spray head body and the sealing assembly, whether water leakage of the fire-fighting spray head is caused or not is detected through the flow detection assembly, and if so, the fire-fighting spray head is replaced or repaired, so that the problem of water resource waste caused by the water leakage of the fire-fighting spray head is avoided.

The invention discloses an overturning type wellhead testing device, and belongs to wellhead equipment for water injection well testing. The overturning type wellhead testing device is composed of a top pulley, a depressurization plug, a blowout prevention pipe, a fixed rotating body a, a rotating frame and a base. The depressurization plug is fixedly connected with the top of the blowout prevention pipe, and the bottom of the blowout prevention pipe is sequentially connected with a fast-connecting pipe union, a ball valve and the base. The top pulley a lower ladder frame, the fixed rotating body a, a lower pulley and an instrument lock are sequentially arranged on the blowout prevention pipe in a connecting mode from top to bottom. One end of the fixed rotating body a is movably connected with the blowout prevention pipe, the other end of the fixed rotating body a is movably connected with the top end of the rotating frame, and the bottom end of the rotating frame is movably connected with a fixed rotating body b. A lifting rotating handle is hinged to one end of the fixed rotating body b, and the other end of the fixed rotating body b is movably connected with the ball valve. The overturning type wellhead testing device is reasonable in structure. Connection of the fixed rotating body and the blowout prevention pipe is rotary and adjustable and can be adjusted at any time. The blowout prevention pipe can be driven to overturn or turn laterally by operating the rotating frame, and therefore instruments can be taken out from or placed on the ground, and operating workers do not need to climb for working and can finish pipe erection tasks on the ground.

The invention discloses a method for automatically cleaning an observation window of a spray granulator. The method particularly comprises the following steps: external metal sliding block and glass wiper installing, spray debugging, normal spraying, internal wall cleaning of the observation window and glass wiper resetting. The method disclosed by the invention has the advantages that on the premises of not changing the structure of an existing spray tower body and not influencing the air tightness of the spray tower, a spray rod, the angle of a nozzle and the spray effect can be conveniently observed through the existing observation window and the observation window is clear in observation effect and is not easily polluted.

The invention relates to the field of sprinkling equipment, in particular to a water-spraying device for public greening.The water-spraying device for public greening is characterized in that a rotary spray head is hinged onto the top of a protection shield cover; a water-conveying pipe penetrates through a base to be communicated with the rotary spray head; a soil humidity sensor and a controller are arranged in the protection shield cover; a probe of the soil humidity sensor penetrates through the base to be inserted into greening land; a temperature sensor is arranged on the outer wall of a support ring; a flow regulating valve is arranged on the water-conveying pipe; an input end of the controller is electrically connected with the soil humidity sensor and the temperature sensor; and an output end of the controller is connected with the flow regulating valve.The water-spraying device and method for public greening have following beneficial effects: average flow required for each time of water spraying can be calculated in a real-time manner; the water quantity is controlled for spraying water in a continuously and periodically changing manner; on the condition that a requirement for public greening is satisfied, the water spraying quantity is decreased for more than 70%; water resources are greatly saved; and therefore the water-spraying device and method are especially suitable for a water shortage region.

The invention provides a cooking equipment, comprising an equipment body; an inner pot is set in the equipment body; a spray device sprays water into the inner pot through the mouth of the inner pot when the spray device is working; a foam detector used to detect the foam in the inner pot rising to the preset position releases the anti-overflow signal; a controller connected to a timer, the spraydevice and the foam detector is used to start the spray device when the anti-overflow signal is received, and continues to detect the anti-overflow signal after the spray device is started, and startsthe timer with the anti-overflow signal undetected; the timer is used to detect the delay time of the foam detector and triggers the controller to control the spray device to shut down when the delaytime reaches preset time. The cooking equipment provided in this scheme sets the spray device to delay spraying water into the inner pot for effectively breaking the bubbles and avoiding the foam backwash, and realizes the anti-overflow function of the cooking equipment, and reduces the water loss in the inner pot to ensure the cooking taste.

The invention discloses a waste gas recovery device for lubricating oil production and a use method thereof, and relates to the technical field of waste gas treatment. The device comprises stairs, a spraying tower and a water collecting tower, an exhaust port is formed in the upper end of the spraying tower, air inlets are formed in the peripheral side face of the spraying tower, a demister, an upper transition pipe and a lower transition pipe are arranged in the spraying tower, the demister is located at the top of the spraying tower, the upper transition pipe is located on the lower side of the demister, and the lower transition pipe is located on the lower side of the upper transition pipe. The upper transition pipe and the lower transition pipe are communicated with a plurality of nozzles. By using the water collecting cylinder, the device can collect and store rainwater and then supply water to a spraying system of the spraying tower, compared with a traditional device, the device is more efficient, and the resource utilization rate is increased; and according to the invention, the separation plate is used, and the herringbone separation holes can be used for blocking part of waste gas impurities, so that the content of impurities in waste gas is reduced during subsequent water spraying, the water spraying amount of the nozzle can be correspondingly reduced, the effect of saving water is achieved, and the device is more environment-friendly.

The invention is an evaporative air-cooled double-effect heat exchange device. A water catcher in the shell divides the inner space of the shell into a pre-cooling cavity and a main cooling cavity; wherein the shell of the pre-cooling cavity is provided with a circulating fan, which is used for pre-cooling. A pre-cooling heat exchanger is arranged in the cavity; an air inlet is arranged on the shell of the main cooling cavity, and a main cooling heat exchanger and a nozzle for spraying evaporative liquid to the main cooling heat exchanger are arranged in the main cooling cavity; The cold heat exchanger and the main cold heat exchanger are connected to each other by connecting pipes, the pre-cooling heat exchanger has a medium inflow pipe, and the main cold heat exchanger has a medium outflow pipe. The present invention combines the advantages of evaporative and air-cooled heat exchange devices, and on the premise of ensuring that the heat exchange effect reaches the level of the evaporative heat exchanger, the water consumption can be greatly saved, and the energy consumption of the system can be greatly reduced at the same time.

The invention discloses a household water well hand pump filter pipe, which employs a multi-layer filter pipe, the filtering effect is greatly enhanced, and flow velocity influence of current due to filtering can be reduced. Further, the upper end of a water taking cavity employs an inclined plane with certain angle, and is cooperated with a check valve, so that high water column and water attack problem can be effectively prevented, and generation of water spraying phenomenon is greatly reduced.

The invention relates to a treatment device and method for flue gas of a rare earth kiln. The treatment device comprises the kiln, a residue settling tank, a spry tower and a main induced draft fan which are sequentially connected through a pipeline. The treatment device is characterized in that the spray tower comprises a first-stage spray tower, the treatment device further comprises a heat exchanger set arranged on the pipeline between the kiln and the residue settling tank; an induced draft fan is arranged on the pipeline between the residue settling tank and the first-stage spray tower. The invention further relates to the method which comprises the steps as follows: flue gas enters the heat exchanger set to exchange heat with water, water turns into superheated steam, the flue gas subjected to heat exchange enters the residue settling tank and then enters the induced draft fan, and the flue gas passing through the induced draft fan passes through the spray tower and is exhausted into the atmosphere through the main induced draft fan. The water jet amount during cooling is reduced, steam is produced through heat exchange, the flue gas comes out of the kiln, passes through the heat exchanger set and returns to the residue settling tank, heat is recovered, the utilization rate of energy is increased, and the cost is reduced.

The present application relates to a grain cooling machine, which includes a machine body, a condenser and a hot air blower are arranged in the body, and a spraying device, the spraying device includes a spray pipe and a regulating valve, and one end of the spray pipe is closed , the other end of the spray pipe communicates with the water source through a regulating valve, the spray pipe is provided with water spray holes at intervals, the spray pipe is located above the condenser, and the water spray holes face downward, and the control valve includes A valve and an adjustment assembly, the valve includes a valve body and a valve stem, the valve stem is rotatably connected to the valve body, and the adjustment assembly is used to control the rotation of the valve stem to control the opening of the valve. In this application, if the temperature outside the warehouse is high, open the valve, spray water to the side of the condenser, and the water evaporates to absorb heat, so as to meet the heat dissipation requirements of the condenser, without the need for high-speed rotation of the fan, thereby avoiding the use of high-speed fans, so as to achieve dusty conditions. The effect of using a cooling machine in an environment.