158results about How to "Adjust the flow rate" patented technology

A method of isolating cells includes providing a microfluidic device having at least one microfluidic channel coupled to an inlet and an outlet, the at least one microfluidic channel comprises at least one expansion region disposed along the length thereof. The at least one expansion region is an abrupt increase in a cross-sectional dimension of the at least one microfluidic channel configured to generate a vortex within the at least one expansion region in response to fluid flow. A solution containing a population of cells at least some of which have diameters = 10 [mu]m flows into the inlet. A portion of cells is trapped within vortex created within the at least one expansion region. The trapped cells may then released from the expansion region.

The invention discloses a temperature controllable subzero cooling system based on self-pressure cryogenic fluid delivery technique. The system comprises a liquid nitrogen storage tank, a liquid delivery pipe, a liquid injection pipe, a vaporizer, a self-pressure loop, an air delivery pipe, a self-pressure adjusting valve, a liquid injection valve, a safety valve, a manual pressure relief valve, a liquid delivery valve, an air delivery valve, a pressure sensor P1, a three-way pipe, a pressure sensor P2, a data collector, a computer, a subzero cooling treatment chamber top cover, a liquid level meter, an exhaust pipe, a thermometer, a subzero cooling treatment chamber cabinet, a workpiece to be treated, a rack, a supporting structure, a travelling wheel, a perforated baffle, a cooling medium delivery pipe and a subzero cooling treatment chamber. The invention has the advantages of self-pressure cryogenic cooling medium delivery, no need of extra driving source, liquid and air two subzero cooling processes, convenient temperature dropping rate and treatment temperature adjustment and uniform temperature field in the subzero cooling treatment chamber.

The invention discloses an anti-blockage system and method for irrigating biogas slurry, belonging to the field of biogas slurry irrigation. The system is characterized by comprising a biogas slurry supply branch and a clear water supply branch, thus realizing mixed irrigation and independent irrigation of biogas slurry and clear water; a soil moisture detection device and a controller are adopted to respectively control the supply quantities and mixing ratio of biogas slurry and clear water aiming at the actual moisture and fertilizer demands of the crops, thus realizing scientific and automatic irrigation of the crops; and in addition, clear water supply is not finished after finishing irrigation but clear water is adopted to wash the pipe networks in the biogas slurry irrigation districts to remove the residual organic components of the biogas slurry in the pipe networks in the biogas slurry irrigation districts, thus avoiding that microorganisms in the biogas slurry are reproduced and grow in the pipe networks in the biogas slurry irrigation districts and block the pipe networks in the biogas slurry irrigation districts.

The invention relates to a cache device for a glass substrate production line and a control method thereof, solving the problems of large occupation of a conveyor belt and high production cost. The technical scheme is as follows: the control method is realized by using a horizontal conveyor belt between a preceding procedure and a post procedure and a control unit with a CPU (Central Processing unit) and a mating software program in the process of continuously delivering a glass substrate; a group of convey roll-type intermediate conveyor belts and a cache device consisting of a servo motor, an inversion mechanism and a storage mechanism for temporarily storing the glass substrate are additionally arranged between the horizontal conveyor belts in the preceding procedure and the post procedure; in the preceding procedure, the glass substrate is conveyed to the intermediate conveyor belt through the horizontal conveyor belt; based on the working state of the preceding procedure and the post procedure, a management circuit controls the cache device to perform cache processing on the glass substrate. The invention has the advantages that the length of the horizontal conveyor belt is shortened and the production space is saved by adding the cache device for storing the glass substrate on the horizontal conveyor belt in the vertical direction.

The invention relates to the field of washing facilities, especially to an upper cover of a washing machine and the washing machine. The upper cover comprises an independent water inlet chamber formed by a top cover (1) and a bottom cover (2), wherein the top cover (1) is connected with the bottom cover (2) or a disc seat (12) of the washing machine in an openable manner, spraying holes (52) communicating with a washing tube of the washing machine are arranged in the bottom cover (2), and the upper cover of the washing machine is installed on the disc seat (12) above the housing of the washing machine. Washing water of the washing machine flows and is injected water into a washing tub from the upper cover, and the purposes of uniform water spraying and cloth wet uniformity are realized. The upper cover has an openable structure, the water inlet chamber can be opened, and washing agent and / or softener can be added to the water inlet chamber. The upper cover integrates the function of a washing agent box. The upper cover is simple in structure, excellent in effect and worthy of promotion.

The invention discloses a coating mold head with cavity pressure adjusted in a horizontal direction. The coating mold head includes an upper mold head and a lower mold head, a slit coating opening isformed in a front end clipper seam between the upper mold head and the lower mold head, a storing cavity is opened in the lower mold head, the storing cavity communicates with the slit coating opening, a cavity pressure adjustment mechanism is arranged on the upper mold head, and the cavity pressure adjustment mechanism includes a sliding block located in the storing cavity, and a transmission adjustment rod used to make a cam head be connected with the sliding block in a transmission mode. When the transmission adjustment rod rotates, the cam head can drive the sliding block to move in a horizontal direction of coating feeding to adjust the cavity pressure in the storing cavity. The coating mold head is provided with the cavity pressure adjustment mechanism, the cavity pressure in the storing cavity can be flexibly adjusted in real-time in the production process of coating, so that the flow velocity and flow of coating slurry can be adjusted, the coating mold head is provided with a gap adjustment mechanism coordinately, and the real-time adjustment of the flow velocity and flow of the coating slurry can be effectively finished in the production process of the coating.

The invention provides an electrochemical testing experimental device for dynamic corrosion of a metal. A main body is a gutter channel, and the whole gutter channel is made of polytetrafloroethylene, wherein a transparent PVC reference electrode sleeve plate is arranged above the gutter channel, and is used for placing and fixing a reference electrode; a counter electrode fixing pressure plate and a working electrode fixing pressure plate are arranged below the gutter channel, and are used for fixing a counter electrode, a working electrode and an external interface and preventing two electrode contact holes in the gutter channel from water leakage. An electrochemical workstation and a circulating water system are started to start an electrochemical testing experiment in dynamic corrosion, and experimental results such as a potentiodynamic polarization curve and an alternating current impedance spectrum of dynamic corrosion of a sample are observed on a computer to acquire metal corrosion characteristics in a dynamic corrosion process. The device has the advantages that compared with another corrosion experimental method, a manner of changing original static corrosion into dynamic corrosion has the advantages that a practical corrosion condition can be simulated better and a corrosion condition can be monitored in real time to facilitate better analysis on a corrosion mechanism for a metal material in a flow-induced corrosion environment.

The invention discloses a portable molecular sieve oxygen generator. The portable molecular sieve oxygen generator comprises an oxygen generator shell and is characterized in that a frame is mounted on the left side of the oxygen generator shell, a miniature gear motor is connected to the left side of the rear end of the frame in a bolt connection manner, the output end of the miniature gear motoris provided with a reciprocating moving mechanism in a frame penetrating manner, an oxygen outlet is connected to the left side of the bottom end of the oxygen generator shell in a threaded manner, amolecular sieve is mounted at the center of the oxygen generator shell, a first one-way valve is mounted at the top end of the inner wall of the oxygen generator shell, and a second one-way valve ismounted at the bottom end of the inner wall of the oxygen generator shell. The portable molecular sieve oxygen generator has the advantages that by structures such as the oxygen generator shell, the second one-way vale, a gas inlet and the oxygen outlet, pressure intensity in the generator is increased to allow the air to sufficiently contact with the molecular sieve, and reaction speed is increased; by structures such as a handle, a pull rod and a pull lever, oxygen flow speed can be regulated according to different use people, evident beneficial effects are achieved, and high adaptability isachieved.

The invention discloses a method for evaluating the influence of to-be-tested objects (an anti-fatigue drug, an anti-fatigue and a pollutant) on the exercise tolerance of an organic body and special equipment of the method. The method comprises the following steps: (1) correcting the flow speed of a system water body; (2) screening an experimental fish shoal; (3) testing the swimming resistance; and (4) collecting experimental data, and analyzing a result. The special equipment comprises a water tank, a water pump, a container for swimming of fishes, a flow regulation valve, a flow meter, a nitrogen bottle, an oxygen bottle, a refrigerator and a high-speed camera. The method can be used for carrying out pre-warning judgment on an abnormal environmental water body, testing a drug, evaluating the exercise tolerance of different species of small-sized fishes in different water body environments, evaluating and testing the a nutritious supplementary and the like. The equipment can be automatically assembled and occupies a small area, parameters such as the temperature, the water flow speed and the dissolved oxygen amount can be controlled, and the equipment is easy and convenient to operate, relatively low in manufacturing cost and convenient for the application of relevant biological experiments.

The invention discloses an underground pipe irrigation system and a construction method thereof for a sponge city. The system comprises infiltration pipes, a regulating box, a flow-spitting box and pressurized tanks. The infiltration pipes are evenly distributed on diversion pipes which are connected to the regulating box through a collecting pipe; the diversion pipes and the collecting pipe are connected through a triple valve; the regulating box is connected with the flow-spitting box through a water transmission pipe; the water transmission pipe is provided with a water suction pump; the flow-spitting box is connected to the pressurized tanks through the diversion pipes; the pressurized tanks are connected with underground pipes. The method comprises following steps: underground pipe layout, flow-spitting box construction, regulating box construction, infiltration pipe construction and the operation of the irrigation system. The method of the invention has simple steps, rainwater is effectively collected so as to be used for underground irrigating; therefore, water accumulation is effectively reduced; waste of water resource is reduced; rainwater reclamation is facilitated; the construction method can meet the needs of irrigation in cities having different terrains.

The invention relates to a fertilizer feeding device, and particularly relates to a liquid fertilizer feeding device. The liquid fertilizer feeding device comprises a fertilizer storage tank. The liquid fertilizer feeding device is characterized in that the fertilizer storage tank is sequentially connected with a power module, an executing mechanism and a metering module, wherein the power module, the metering module and the executing mechanism are connected with a central controller; all modules and the central controller are powered by a power supply module; and the central controller is also connected with an operation display module. The fertilizer feeding device is unique in structure, and is capable of improving the fertilizer feeding efficiency and setting the fertilizer feeding amount according to the specific circumstance; the flow rate of the fertilizer in the fertilizer feeding process can be artificially adjusted; and in addition, the function of recording the fertilizer feeding amount can also be achieved.

The invention is suitable for the field of piston pumps, and provides a two-way piston pump and a control method thereof. The piston pump comprises a control system, a first one-way metering pump, a second one-way metering pump, a first driving mechanism and a second driving mechanism; the control system controls operation or standing of the first and second driving mechanisms; the first and second one-way metering pumps are respectively connected with the first and second driving mechanisms; each one-way metering pump has a hollow cavity, a sucking port and a discharge port; the cavity is communicated with the sucking port and the discharge port; a pneumatic ball valve is mounted in the sucking port; a one-way valve is mounted in the discharge port; each driving mechanism includes a piston rod capable of extending; the end parts of the piston rods are inserted in the cavities of the one-way metering pumps, and perform a reciprocating motion in the cavities; and the control system controls the first and second driving mechanisms to drive reverse movement of the two piston rods. The piston pump has two sets of one-way piston metering pumps; one set is for feeding, and the other set is for discharging; and the two sets are alternately operated to realize continuous discharge of the piston pump.

The invention provides a novel chemical dissolution device, which comprises a kettle body and a kettle cover. The upper end of the kettle body is provided with a feed inlet, the lower end is provided with a discharge port, and the feed inlet and the discharge port are both equipped with a valve. The kettle body is internally provided with a stirring shaft, which is equipped with stirring paddles. The stirring shaft is connected to a power unit. The novel chemical dissolution device is characterized in that the kettle body and the kettle cover are in seal connection by a flange, the kettle cover is equipped with handle, the kettle body is internally provided with a screen cylinder, screen pores are uniformly disposed on the bottom around the screen cylinder and the cylinder wall, the discharge port is provided with a filter screen, and a temperature sensor is arranged at the discharge port in the kettle body. The power unit is connected to a frequency changer. The dissolution device has the advantages of simple structure, small volume, convenient use, more effective control of the dissolution process, fast dissolution speed, and good dissolution effect, etc.

The invention provides a pneumatic three-way diaphragm valve for explosive flow control. The pneumatic three-way diaphragm valve is characterized in that a pneumatic cylinder body is fixed onto a three-way pipe in a communicated manner and is coaxial with a discharge outlet, a diaphragm leaf is hermetically mounted at a joint of the pneumatic cylinder body and the three-way pipe and separates the pneumatic cylinder body from the three-way pipe, a piston is further arranged in the pneumatic cylinder body in a coupled manner and comprises a cylinder and a hemisphere, the radius of the hemisphere is equal to that of the cylinder, the hemisphere is fixed to one end of the cylinder, one end of the hemisphere is in contact with the diaphragm leaf, one end of the cylinder divides the pneumatic cylinder body to form a gas cavity, and a gas port is formed in the end, which is far away from the diaphragm leaf, of the pneumatic cylinder body. The pneumatic three-way diaphragm valve has the advantages that the flow speed of explosive fluid can be safely controlled; the pressure of the gas cavity is regulated by means of filling gas into the gas cavity or exhausting gas out of the gas cavity, so that the aperture of a fluid pipeline can be quickly and accurately controlled, and the flow rate of explosive slurry fluid can be regulated; a valve assembly and explosive are prevented from rubbing each other in valve opening and closing procedures.

The present invention discloses a heat exchanger used in an air conditioner, which has a path conversion unit in a tube forming a refrigerant path. The path switching unit is used to switch the flow path of the refrigerant passing through the tube according to the cooling or heating load, thereby adjusting the flow rate of the refrigerant. Using the path conversion unit has the effect of realizing effective control of its cooling or heating capacity according to the external load.

The invention discloses a rapid oil drain device with a one-way valve type oil plug of an oil pan, and the rapid oil drain device is applied to oil drainage of a diesel engine oil pan. One end of an elbow pipe is connected with a body which is shaped like a ball and hollow, and the elbow pipe is communicated with the interior of the body; a mandrel which is shaped like a hollow pipe and is closed at the bottom end is fixed on the interior of the body in the vertical direction, an inner hole of an oil drain hole seat of the oil pan is connected with the portion, exposed out of the body, of the upper end of the mandrel through an external thread, two round holes are formed in the portion, located in the body, of the mandrel, the lower end of the mandrel is closed, and a screw which is provided with a handle is connected with the center of the closed end through an internal thread. The mandrel is in threaded connection with the screw, when oil drainage is conducted on the oil pan, the screw jacks up a steel ball in a one-way valve, and engine oil can flow down. The exterior of the top end of the mandrel is provided with an external thread, the mandrel can be connected with the oil plug of an oil drain valve through the external thread, and therefore the whole device can be fixed on the oil pan conveniently; oil can be drained automatically after the oil drain device is installed on an oil drain hole, and oil drainage is more efficient and rapid.

The invention provides a liquid-state in-situ corrosion fatigue device and a testing method. The device comprises a panel, a side plate, a guide pipe, a fixed platform and a sealing part. The liquid-state in-situ corrosion fatigue device has the advantages that a flow speed of a corrosion solution can be adjusted through changing the power of a submersible pump. The liquid-state in-situ corrosionfatigue device has good sealing performance, can be repeatedly utilized for long time, has certain corrosion resistance and has certain tolerance on inorganic acid and alkali type corrosion media; theliquid-state in-situ corrosion fatigue device is low in cost, simple in structure and easy to process and assemble; the testing method provided by the invention is combined, and a test sample can bemonitored in real time in a liquid in-situ corrosion fatigue experiment process. The testing method can be used for eliminating influences, caused by the corrosion solution, on DIC (Density IndicatingController) information acquisition quality; good analysis precision can be ensured. The testing method is simple in steps and is easy to operate.

The invention relates to the technical field of element detection, in particular to a method and device for detecting femtosecond plasma raster induced breakdown spectra. A space periodically modulated plasma raster is formed after femtosecond pulses are separated, synchronized in time domain and focused, and the plasma raster induced breakdown spectra are used for detecting samples to be detected. According to the method, the plasma raster in ultrafast optics is combined with laser-induced breakdown spectroscopy (LIBS), so that the incomparable advantages of the LIBS technology such as real-time, fast, micro-damage and all-element analysis are retained, the limitation of a single-beam femtosecond filament clamping power is overcome to a certain extent, the free electron density is improved, and thus the signal intensity of elements and the detection sensitivity are improved.

The invention discloses a liquid food feeding intelligent device suitable for the digestive department. The device comprises a device body, the inner bottom of the device body is fixedly connected with a threaded seat and a fixing block, the upper end of the threaded seat is connected with a threaded joint, the upper end of the threaded joint is fixedly connected with a storage bucket, the upper end of the storage bucket is in threaded connection with a bucket cover, the inner wall of the storage bucket is provided with an annular groove, the annular groove is internally provided with an annular heating plate, and an electric heating tube is screwed in the annular heating plate. Liquid food feeding automation is achieved to solve the problem of low efficiency when a nursing worker or an accompanying person manually feeds is solved, the problem that a patient is choked when a feeding device is manually operated causing safety problems and the like is solved, the biting pressure of the patient on a touching sensor can regulate the flowing speed of food, the patient is not choked, the liquid food can be heated through the electric heating pipe, the patient is fed more intelligently bythe device, the safety performance is high, the feeding efficiency is improved, and the liquid food feeding intelligent device belongs to advanced treatment equipment.

The invention relates to the field of drinks processing, in particular to a drinks filling device. The drinks drilling device comprises a wine storage barrel, a filling head, a barrel fixing base, a stand frame, a base, a filling control mechanism, a lifting mechanism, a wine bottle base and an ejecting plate; the lower end of the wine storage barrel is fixedly connected with the filling head; thewine storage barrel is fixed on the barrel fixing base; the barrel fixing base is fixed on the stand frame; the stand frame is fixed on the base; the filling control mechanism is fixed on the barrelfixing base; the filling control mechanism is in transmission connection with the lifting mechanism; the lifting mechanism is connected to the stand frame, and is in transmission connection with the wine bottle base; the wine bottle base is slidingly matched on the stand frame; and the ejecting plate is fixedly connected to the wine bottle base, and is in transmission connection with the filling head. The drinks filling device can fix wine bottles with different sizes in the drinks production process for quantitative filling.

The invention provides a liquid transmission control device and a liquid transmission system. The device comprises a pipeline bearing member, a flow rate sensor, an adjustment structure and a controller. The pipeline bearing member is designed to allow pipelines made from soft materials and used for liquid transfer to be arranged therein, the pipeline bearing member includes an accommodating space, and the accommodating space is used for accommodating at least one part of the pipelines; the flow rate sensor is used for detecting the flow rate of liquid transmission in the pipelines; the adjustment structure is used for adjusting the cross-sectional areas of the pipelines arranged in the accommodating space so as to adjust the flow rate of liquid transmission in the pipelines; the controller is used for outputting a control signal to the adjustment structure according to the flow rate detected by the flow rate sensor, so that the adjustment structure adjusts the cross-sectional areas ofthe pipelines arranged in the accommodating space. The device can monitor the condition of in-vitro and in-vivo liquid transmission and control the liquid transmission speed timely to avoid medical accidents caused by abnormal flow rates.

The present invention relates to an application method of an adjustable motor cooling device. The motor cooling device is installed at the rear end of a motor body, a rectangular insertion rod is formed at the rear end of the output shaft of the motor body, and axially arranged cooling pins are uniformly distributed at the circumference of the outer wall of the motor body. The motor cooling devicecomprises a device housing, a transmission device, a blowing device and an opening and closing device. The application method comprises the steps of: the step 1, performing blowing and cooling by employing the blowing device; and the step 2, regulating a cooling effect. The motor cooling device employs the transmission device to transmit the power of the motor to the blowing device, the pneumaticblades of the blowing device generate an airflow, and the airflow accelerates the flow of the airflow at the outer wall of the motor body to enhance the cooling effect; and moreover, on the premise without change of the rotation speed of the motor, an adjustable outer ring is rotated to regulate the rotation speeds of transmission gears and the pneumatic blades so as to regulate the flow speed and cooling effects of the airflow.

The invention belongs to the technical field of building construction dust removal, and in particular, relates to a water spraying dust removal device for green building construction. Aiming at the problems that no corresponding dust removal device exists in a conventional construction site, flying dust is caused to float from a building construction site to a nearby residential area, and environmental pollution is brought to surrounding residents, the invention provides the water spraying dust removal device for green building construction, wherein the water spraying dust removal device comprises mounting bases detachably and fixedly mounted on the two sides of a wall body; dust removal bases are slidably connected to the two sides of the mounting bases; a lifting assembly is fixedly connected to each mounting base, and each lifting assembly is fixedly connected with one side of the corresponding dust removal base; a dust suction assembly is arranged in each dust removal base, a waterconveying pipe network is arranged on each dust removal base, and a plurality of water spraying heads with different spraying angles are arranged on each water conveying pipe network. According to the water spraying dust removal device, the dust removal effect of the water spraying dust removal device body is good, and multi-directional three-dimensional dust removal can be achieved; and meanwhile, air suction dust removal is assisted, the dust removal effect can be better improved, and high practicability is achieved.

The invention relates to a fire-fighting pipe and a mounting method thereof, and belongs to the technical field of fire-fighting equipment. The fire-fighting pipe comprises a fire-fighting box arranged at the position of an indoor wall, a water outlet formed in the fire-fighting box and connected with a fire-fighting pipeline, and a fire-fighting water belt suspended on the side wall of the wateroutlet and located in the fire-fighting box. The fire-fighting pipe is characterized in that a first adjusting assembly is arranged at the water outlet in an adjustable mode; a second adjusting assembly is arranged on the fire-fighting water belt in an adjustable mode; and a third adjusting assembly is arranged at a water spraying opening of the fire-fighting water belt in an adjustable mode. Thefire-fighting pipe and the mounting method thereof are provided, so that by controlling the inflow amount of water flow in a fire hydrant, the pipe diameter during water flowing and the spraying opening for spraying water, the spraying amount of the water flow in the fire hydrant is effectively adjusted, and the spraying distance of the water flow in the fire hydrant is adjusted.

The invention discloses a thrust water hydraulic cylinder which adopts a super absorbent technology and a steel wire rope technology. The end face and / or outer circular static seal face are / is sealedby rubber / plastic O-shaped seal rings with steel wire rope skeletons, and at the same time, is subjected to clearance blocking by super absorbent O-shaped seal rings with steel wire rope frames; and lubrication guide parts adopt pure water lubrication guide combined ring / super absorbent combined devices. Cartridge or superimposed V-shaped sealing devices separately for reciprocating holes / holes / shafts are also provided for sealing and lubrication of pistons / plungers / piston rods; forced-seal wedge-shaped annular grooves are deformed by using high pressure or ultra-high pressure water and gaps between an inner hole with a screw groove bush and the outer circle of a plunger is reduced for forced seal; the plunger with a screw groove is lubricated by using pressure water; and a split sleeve with pins is used for guaranteeing sealing through cooling, pressure-stabilizing, speed regulation and purification, and various innovative technologies are adopted. Sealing and lubrication and other problems are solved; and the thrust water hydraulic cylinder is applied to water hydraulic industries including high pressure and super high pressure systems.

The invention discloses electric-communication stay wire hoop machining equipment. The machining equipment comprises a base, a stand column and air-operated drills; original part receiving tables are mounted on the two sides of the top of the base, the stand column is arranged on the back face of the base, a bearing transverse lever is arranged on the top of the stand column, and telescopic columns are movably mounted in inner cavities in the bottoms of the two ends of the receiving transverse lever; the air-operated drills are mounted at the bottoms of the telescopic columns, a drill rod is mounted at the bottom of each air-operated drill, and a tapping knife and a drill knife are sequentially arranged at the bottom of each drill rod from top to bottom; the electric-communication stay wire hoop machining equipment is stay wire hoop drilling and tapping integrated equipment, the drill knife and the tapping knife are arranged at the bottom of each drill rod, and therefore when the equipment machines a stay wire hoop, drilling machining can be carried out, and meanwhile a drill hole can be subject to tapping machining; and accordingly, production machining efficiency of the stay wire hoop can be effectively improved, and meanwhile workloads of a worker can be effectively reduced.

The invention provides a flue-gas treatment device, and belongs to the technical field of environmentally friendly equipment. The flue-gas treatment device is characterized by comprising a main flue (14), a sodium bicarbonate grinding device (7), a powder preheating module (6) and a dust removal module, wherein a gas inlet end of the main flue (14) is used for feeding to-be-treated flue gas; a gasoutlet end of the main flue (14) communicates with a gas inlet end of the dust removal module; a gas inlet end of the sodium bicarbonate grinding device (7) communicates with the gas inlet end of themain flue (14); a gas outlet end of the sodium bicarbonate grinding device (7) communicates with the main flue (14); the powder preheating module (6) is arranged between the sodium bicarbonate grinding device (7) and the main flue (14); and the dust removal module is a wet-process desulfurization tower or washing tower (13). Sodium bicarbonate powder and flue gas are reacted fully by the flue-gastreatment device, energy consumption of the powder preheating module is reduced, the desulfurization and denitration effect is good, and low-temperature flue gas can be directly treated.

The invention discloses a self-service multifunctional circulation waterway cleaning machine. The self-service multifunctional circulation waterway cleaning machine comprises a machine frame. A water tank is arranged at the upper end of the machine frame. A cleaning pipeline connected with the water tank is arranged below the water tank and comprises a first water hole, a second water hole, a first three-way valve and a second three-way valve. The first water hole communicates with the first three-way valve through a first three-way pipe connector. The second water hole communicates with the second three-way valve through a second three-way pipe connector. The first three-way valve communicates with the second three-way pipe connector. The second three-way valve communicates with the first three-way pipe connector. The first three-way valve further communicates with a water inlet pipe. The second three-way valve further communicates with a water outlet pipe. The water inlet pipe communicates with the water tank. Diluted pipeline cleaning agents are added into water troughs of the cleaning machine, an air pump of the cleaning machine provides circulation power, the cleaning agents are made to circularly flow in the pipeline, and forward and reverse switching can be realized rapidly, so that the purposes of cleaning up waste and impurities inside the pipeline and enabling equipment to recover original functions and effects are realized.