1680results about How to "Reduce use cost" patented technology

The invention relates to a bactericidal composition containing fluxapyroxad and thiediazole copper. The bacterial composition is compounded from fluxapyroxad and thiediazole copper in a binary mode, wherein a mass ratio of fluxapyroxad to thiediazole copper is (1-50) to (50-1); a mass fraction of fluxapyroxad and thiediazole in the preparation is 1%-80%, and the rest of the preparation is auxiliary components which are allowed to use and are acceptable in a pesticide. A dosage form of the bactericidal composition is missible oil, a suspending agent, wettable powder, a water dispersible granule, emulsion in water, microemulsion, a granule and a micro-capsule. The bactericidal composition is mainly used for controlling plant gray mold, peronospora and phytophthora germs.

The present application relates to a kind of rocket engine injector thin-wall milling self-positioning fixture and assembly method, it mainly includes upper positioning tire body component, conical surface expansion ring, tire unloading bottom plate, pressing cover plate, tire unloading lifting ring, pressing bolt, expansion screw, lower positioning bottom plate component, locking bolt, long fixed bolt, lower positioning bottom plate component is fixed in machine tool workbench by locking bolt long-term, always not disassembled.Product is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion sleeve before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thinn

The utility model discloses a poultry vaccination marking mechanism which comprises an ink jet mechanism, the ink jet mechanism is flat and hollow and is connected with an external liquid pump through a hose, one side of the ink jet mechanism is provided with a nozzle, the other side of the ink jet mechanism is rotatably provided with a limiting ball, one end of the limiting ball is connected with a connecting mechanism through a connecting rod, and the other end of the limiting ball is connected with the connecting mechanism. The input end of the liquid pump is connected with an ink box containing marking ink through a pipeline, and the output end of the liquid pump is connected with the ink jetting mechanism through a hose. The trigger switch of the liquid pump can be linked with the vaccine injector, when the vaccine injector is started to inject vaccines once, the liquid pump operates once, a certain amount of ink is sprayed to feathers on poultry bodies, and the ink-jet mechanism is linked with the vaccine injection mechanism to inject the vaccines into the feathers. Meanwhile, the poultry feather marking device is small and exquisite in design, light, simple in structure, low in use and maintenance cost and suitable for small-scale poultry breeding.

The utility model relates to a tool changing device and a machining system, the tool changing device comprises a pick-and-place mechanism, and the pick-and-place mechanism is used for picking and placing a cutter head or a cutter box; in the cutter position, the cutter obtained by the taking and placing mechanism is placed in the cutter position, and the new cutter box and the old cutter box are exchanged in the cutter position; and the cutterhead opening and closing mechanism is used for opening or closing the cutterheads at the cutterhead positions, when the cutterheads are opened, the cutter boxes can be taken out or put into the cutterheads, and when the cutterheads are closed, the cutter boxes in the cutterheads are fixed. The cutter box in the cutter head can be replaced on the cutter replacing device, efficient circulation of cutters is achieved, the number of used cutter heads is reduced, and cost is reduced.

The embodiment of the invention discloses a task execution method and system. The method comprises the following steps: in response to a to-be-executed artificial intelligence task, identifying task features of the artificial intelligence task, and obtaining a first resource portrait of a general computing domain and a second resource portrait of an intelligent computing domain in a hybrid cloud environment; determining a first matching degree between the task feature and the first resource portrait, and determining a second matching degree between the task feature and the second resource portrait; and according to a numerical relationship between the first matching degree and the second matching degree, determining a target computing domain from the general computing domain and the intelligent computing domain, and allocating the artificial intelligence task to the target computing domain, so that the target computing domain is utilized to execute the artificial intelligence task. According to the technical scheme provided by the embodiment of the invention, the optimal balance between the cost and the performance can be realized.

The application discloses a dilution pretreatment detector for ion chromatography detection of underground water and a method thereof, and relates to the technical field of water quality detection.The detector comprises a supporting shell, a dilution liquid storage cylinder is arranged in the supporting shell, an underground water storage cylinder is arranged in one side of the supporting shell, and a stirring dilution cylinder is connected to the bottom of the underground water storage cylinder and the dilution liquid storage cylinder.A series of structures are arranged, which can effectively avoid impurities from accumulating in the filter screen and the cylinder, greatly improve the impurity removal rate, provide high-purity samples for subsequent ion chromatography detection, reduce the risk of pipeline blockage and instrument damage, ensure that the sample concentration after dilution fully meets the ion chromatography detection requirements, significantly improve the accuracy and stability of the detection results, greatly improve the continuity and work efficiency of the underground water sample pretreatment, adapt to batch sample detection requirements, facilitate deep maintenance and component replacement, shorten equipment maintenance time, and reduce use and maintenance costs.

The utility model relates to the technical field of endurance life test of harmonic reducers, in particular to endurance life test equipment for harmonic reducers. The endurance life experiment equipment for the harmonic reducer comprises a workbench, a first moving carrier, a second moving carrier, a fixed carrier, a load device and a torque input mechanism, the first moving carrier, the second moving carrier and the fixed carrier are sequentially arranged at the upper end of the workbench at intervals, the torque input mechanism is installed on the first moving carrier, and the load device is installed on the first moving carrier. The second mobile carrier is used for installing a harmonic reducer to be detected, the load device is installed on the fixed carrier, the shaft end of an output shaft of the torque input mechanism is provided with the first torque detection device and is connected with an input shaft of the harmonic reducer through the first torque detection device, and an input shaft of the load device is used for being connected with an output shaft of the harmonic reducer. The device has the advantages of reasonable structural design, high test efficiency, stable and reliable test process and relatively low use cost.

This invention provides a slow-release feed device for marine aquaculture, relating to the field of marine aquaculture technology. It includes a rotating drum, a drum cover, and a fixed shaft. A rotating impeller is mounted on the rotating drum, which is connected to the drum cover to form a cylindrical space. The fixed shaft passes through the central axis of the rotating drum and drum cover and is rotatably connected to them. A cake holder, a feed cake, and a cake brush are installed within the cylindrical space. The cake holder is fixedly connected to the fixed shaft, and the feed cake is mounted and fixed on the cake holder. The cake brush rotates synchronously with the rotating drum, brushing the surface of the feed cake to accelerate slow release. Utilizing ocean currents or the up-and-down movement of seawater, the rotating impeller drives the rotating drum to rotate, which in turn drives the cake brush to continuously brush the slow-release flocculated layer formed on the surface of the feed cake. This effectively accelerates the diffusion and release of feed particles, solving the problem of excessively long natural slow-release time for feed cakes and their inability to pass through a 150-mesh or finer silk sieve, thus meeting the needs of aquaculture such as oyster farming.

The application discloses a self-balancing offshore operation platform safety ladder and a use method thereof, which comprises a sliding seat arranged in a horizontal sliding mode, a connecting frame hinged to one end of the sliding seat, a footboard horizontally and rotationally connected to the connecting frame, and a counterweight hung at the bottom of the footboard, wherein a hoisting frame is installed at the top of the sliding seat, the top end of the hoisting frame is connected with the movable end of the connecting frame through a lifting rope, and a horizontal shaking buffer assembly is arranged between the connecting frame and the footboard. The self-balancing mechanism and the buffer assembly significantly improve the stability of the safety ladder under complex sea conditions, the real-time response and anti-skid design ensure the safety of personnel getting on and off the platform, and the quick installation and modular design facilitate daily use and maintenance.

The utility model provides a portable gas detection instrument belongs to gas detection technical field, include: external probe, semiconductor type sensor and catalytic combustion type sensor, semiconductor type sensor and catalytic combustion type sensor are installed in the inside of external probe simultaneously, external probe is designed with convenient replacement interface, is convenient to replace, the appearance of external probe adopts cylinder or oval, installs two gas sensors and temperature sensor, semiconductor sensor works in the lower state of gas concentration, and catalytic combustion sensor works in the higher state of gas concentration, realizes complementary advantages, and the signal of gas sensor is temperature compensated to obtain more accurate detection data, and the current temperature can also be displayed simultaneously by the detection instrument, the characteristics of sensor probe miniaturization are reserved, and the probe is convenient to replace, is convenient in narrow space application, has no influence to the structure of gas detection instrument itself, and is convenient for production reform.

The utility model discloses a spiral conveyor for dry-mixed mortar preparation relates to dry-mixed mortar preparation equipment field. This spiral conveyor for dry-mixed mortar preparation, including fixed shell and transmission shaft, the transmission shaft is inserted in the fixed shell inboard, the fixed shell is including lower tank shell, first upper cover shell and second upper cover shell, and the lower tank shell inboard is connected with the positioning kit, the first upper cover shell is located lower tank shell top, the second upper cover shell is located lower tank shell top, and the first upper cover shell and second upper cover shell are located positioning kit both sides. This spiral conveyor for dry-mixed mortar preparation adopts split type fixed shell design, including lower tank shell, first upper cover shell and second upper cover shell, is connected through fixed clamping strip and reinforcing bolt, is convenient for installation and dismounting, is favorable to the maintenance and overhaul of equipment, and spiral wing board is provided with multiple groups and can be combined into complete spiral push material board, when partial spiral wing board is damaged, only needs to replace the corresponding damaged component.

The utility model relates to emergency rescue technical field discloses portable pneumatic puncture breaking tool, including fixed frame body, the outer wall fixed connection of fixed frame body has a plurality of limit piece, the inner wall rotation connection of limit piece has rotation connecting rod, the outer wall fixed connection of rotation connecting rod has the clamping block, the inner wall of clamping block has set up the recess, the inner wall sliding connection of recess has the clamping post, a plurality of the far away one end of clamping post all fixedly connected with the clamping piece, the outer wall sliding connection of clamping piece has the support link, a plurality of the far away one side of support link all fixedly connected with the spring. In the utility model, first when needing work, with fixed frame body as the basis, under the action of clamping block and recess, the clamping post is pulled out the recess through the artificial pressing clamping piece again, and then realizes multiple pressing by the spring's resilience, and further improves the portability of the device.

This application provides an electric motor, an electric propulsion device, and an aircraft. The electric motor includes: a stator having a cavity; a rotor rotatably connected to the stator via a shaft; and the rotor being insulated from the stator; a conductive component disposed within the cavity, one end of the conductive component being conductively connected to the shaft, and the other end extending to the outside of the electric motor. The electric motor of this application, by incorporating the conductive component, creates a complete low-impedance electrical path between the shaft and the conductive component, allowing current that might be input into the electric motor via the rotor hub to be output to the outside of the electric motor, thus improving the electrical protection performance of the electric motor.

A kind of airplane nose landing gear turning performance test bench and test method contain nose landing gear test piece, rigid support frame and jacking device, the body of nose landing gear test piece is fixed on rigid support frame, wheel is supported on jacking device, turning mechanism drives the top plate of jacking device top by fixed shaft along with wheel rotation, the fixed shaft is connected with a loading actuator, the telescopic end of loading actuator is hinged with one end of fixed shaft, the other end of loading actuator is hinged on support frame by connecting seat, the loading actuator is controlled by torque loading controller, when carrying out turning performance test, nose inner cylinder and wheel are compressed using jacking device, so that wheel is in turnable state;According to the turning angle of wheel, predetermined torque is applied to fixed shaft using torque loading actuator.

The utility model discloses an RTO safe air supply system which comprises an air inlet pipe, an emergency cut-off valve is arranged on the air inlet pipe, a main pipe branch is arranged on the air inlet pipe, a fresh air valve is arranged on the main pipe branch, the tail end of the air inlet pipe is connected with an RTO main fan, a pressure transmitter is arranged on a pipeline at the front end of the RTO main fan, the RTO main fan is connected with an RTO furnace, and pressure difference transmitters are arranged on an inlet and an outlet of the RTO furnace. And an outlet of the RTO furnace is connected with an air outlet pipe. The RTO furnace air supply system solves the problems that in the prior art, RTO furnace air supply system equipment is high in operation failure rate, and potential safety hazards exist.

The invention provides a radio frequency signal transmission delay adjusting device, which is characterized by comprising a first outer conductor, a second outer conductor, a first inner conductor and a second inner conductor which are coaxially arranged, the first inner conductor comprises a first step section and a second step section in the axial direction, the first step section is arranged in the first outer conductor, and the second step section is arranged in the second outer conductor; the second outer conductor internally comprises a first inner cavity and a second inner cavity along the axial direction, the first outer conductor is inserted in the first inner cavity, and the second inner conductor is arranged in the second inner cavity; one end, close to the first outer conductor, of the second inner conductor comprises a containing cavity extending in the axial direction, and at least part of the second step section is arranged in the containing cavity in a penetrating mode; an adjusting section is arranged between the end, located in the first inner cavity, of the first outer conductor and the end, close to the first inner cavity, of the second inner cavity, the first outer conductor can drive the first inner conductor to move in the axial direction relative to the second outer conductor, the length, penetrating through the containing cavity, of the second step section is changed, and therefore the length of the adjusting section is adjusted.

The utility model discloses a new energy battery tray clamping device of convenient transfer relates to tray clamping device technical field, and this device includes the transfer tray, both sides of transfer tray all are provided with the through slot, the top of transfer tray is provided with a plurality of first mounting hole, the top of transfer tray is provided with four support rod, and the top of four support rod is provided with the top plate, and the bottom of top plate is provided with two baffle. The utility model through the cooperation of double -end electric jar and linkage mechanism, can synchronous realization battery tray main body all around clamping, compared with one side or both sides clamping, and the stability is stronger, can avoid the battery tray main body deflection or falling in the transfer process, and first clamping mechanism and second clamping mechanism all design have multiple adjusting structure, can adjust the clamping part position flexibly, can adapt the battery tray main body of different size, need not for different specifications tray separately equipped with device, reduces use cost.

The utility model relates to the technical field of automobile parts processing, disclose the upset frock suitable for different specifications automobile connecting rod, including support base plate, the top of support base plate is fixedly connected with a plurality of fixed blocks, the top of support base plate is fixedly connected with drive step motor, drive step motor output fixedly connected with the rotary disc, the right side of rotary disc is rotatably connected with the left side of fixed block, rotatably connected with worm between the adjacent of a plurality of fixed blocks, the right side fixed connection of worm has the handle of turning, the inner wall of worm is engaged connection has the turbine, the turbine inner wall fixedly connected with connecting rod, the outer wall rotatably connected with the hollow board of connecting rod. In the utility model, first observation working environment, then determine the angle required through judgment, then when needing to adjust the angle of left and right, through the power that artificial handle of turning is rotated provides, and then drive, so that can work at any angle.

The utility model relates to a pure steam generator of multiple types solution can handle, include: box, install the groove in the box and be used for installing steam equipment, pure steam subassembly is set up at the right side of installation groove and is used for producing pure steam. The utility model relates to the technical field of steam generator. This pure steam generator of multiple types solution can handle, can filter outside water into purified water through the filter component that sets up, to make pure steam generator when using can directly access outside industrial water or domestic water to use, reduce the use cost of pure steam generator, set up the backflushing component at the bottom of filter component simultaneously, can greatly prolong the service life of filter core, to further reduce the use cost of pure steam subassembly, improve the practicality of pure steam subassembly.

The utility model discloses a kind of automobile parts cleaning device, including support frame, support frame is fixed cleaning tank and water receiving tank, first support plate is equipped in cleaning tank, and its upper portion is connected second support plate through support column, and second support plate is equipped support rod and pneumatic clamp. Pump machine and driving motor are installed on support frame, and pump machine inlet end is connected water tank, and outlet is connected porous pipe and spray pipe on first support plate through first distribution pipe, second distribution pipe. Drainage hopper is equipped in the bottom of cleaning tank, and water tank is connected by drainpipe on hopper, and top is connected cover plate by pneumatic push rod. The device is targeted cleaning by porous pipe and spray pipe, realizes water recycling, and part is fixed stable, convenient to operate, suitable for a variety of automobile parts cleaning.

The application relates to the technical field of building construction, and discloses a building construction platform which comprises a main body, a limiting structure, two first locking structures, a supporting structure, two threaded rods, two connecting ropes and a transport vehicle. The inside of the main body is provided with a transport structure, the limiting structure and the transport structure are provided with a second transmission structure, the second transmission structure and the threaded rods are connected with each other through a first transmission structure, the first transmission structure and the limiting structure are connected with each other through a first locking structure, the inside of the limiting structure is provided with a second locking structure close to the first transmission structure and used for fixation. The material plate can be moved into the inside of the limiting structure through the transport vehicle. When the material plate is moved into the inside of the unloading platform, the position of the material plate is limited through the limiting structure, the bearing area of the material plate is greatly improved, and the transportation efficiency is improved.

The utility model relates to lathe technical field provides a good micro - numerical control lathe of chip removal, solve the problem that lathe horizontal work surface falls the chip not easy clearance and the chip falls into the guide rail and influences the problem of tool rest feed. Scheme, the work surface of bed body is inclined surface, the lathe still includes: X axle assembly, include: a) X axle bottom plate, set up on the work surface of bed body, have X axle guide rail on it, b) workbench, slide connection in X axle guide rail, its upper portion is fixed with tool rest, c) first linear drive assembly, drive workbench and move along X axle direction, d) X axle protection assembly, install in workbench X axle direction both ends, protect X axle guide rail, Z axle assembly, include: a) Z axle guide rail, set up in the work surface of bed body, X axle bottom plate bottom slide connection in Z axle guide rail, b) second linear drive assembly, drive X axle bottom plate and move along Z axle direction, c) Z axle protection assembly, install in X axle bottom plate Z axle direction both ends, be used for protecting Z axle guide rail.

The utility model provides an atomization automatic stop device, including cover device and atomization detection device, atomization detection device installs in the medicament input end of cover device, cover device includes the application face mask, is provided with the medicine outlet nozzle and the air hole respectively on the application face mask, both sides of application face mask all are provided with fixed band connecting ear, atomization detection device includes the relay pipe, the bottom of relay pipe is provided with the input connecting pipe. When using, through setting up the relay pipe and medicine outlet nozzle intercommunication on the back of application face mask, simultaneously, the relay pipe is connected with the medicine supply device through the input connecting pipe, when carrying out the atomization treatment, the medicine will first pass through the inside of the relay pipe and then enter the application face mask, at this moment, the particle trap will detect the airflow, when the particle in the gas cannot be detected, the particle trap controls the medicine supply device to stop working through the signal relay device in the wired or wireless control mode, realizes the effect of automatic stop atomization.

This invention discloses a pipeline gas supply device, a pipeline gas filling method, and a pipeline welding method, relating to the field of welding tool technology. The pipeline gas supply device includes a gas supply pipe, which comprises a hollow gas supply pipe body and a sealing plate located at one end of the gas supply pipe body, with the other end of the gas supply pipe being the gas supply end; a sealing sleeve fitted around the outer circumference of the gas supply pipe; two fixing washers, located at opposite ends of the sealing sleeve; a pushing component located at the gas supply end of the gas supply pipe; and an expansion / contraction component. The pushing component moves towards the sealing plate end of the gas supply pipe, causing the expansion / contraction component to be squeezed by the fixing washers and the sealing plate or the pushing component, achieving a pipeline sealing effect. This device limits the gas filling range of the protective gas to between the two expansion / contraction washers, greatly reducing the amount of gas used for welding, preventing free discharge of the protective gas, enabling quantitative use of the protective gas, and reducing waste. It is applicable to the gas filling of welded bends, long pipes, and irregularly shaped pipelines.

The application discloses a coking ammonia distillation wastewater filter tar scale cleaning agent and a preparation method thereof, and relates to the technical field of industrial cleaning agents. The cleaning agent comprises the following components in mass percentage: N-methyl pyrrolidone 30-40%; ethylene glycol monobutyl ether 1-3%; sodium dodecyl benzene sulfonate 5-9%; sodium polyepoxysuccinate 1.5-3.5%; sodium silicate 0.5-1.5%; and deionized water in the rest. The application greatly reduces the content of ethylene glycol monobutyl ether and optimizes the compound system of the main solvent and the surfactant, completely solves the normal-temperature stratification problem of the traditional water-based cleaning agent, realizes VOC≤8.5%, cleaning rate≥98.5%, stable storage for≥6 months under the conditions of shade, ventilation and avoidance of direct sunlight, recyclable use for 2-3 times, mild preparation process without foaming problem, and easy industrial production.

The application provides a recyclable phase change microcapsule and a preparation method thereof, and comprises the following steps: (1) preparing a surfactant solution; (2) adding a phase change material into the surfactant solution and uniformly dispersing to obtain an emulsified solution; (3) adding a solution containing magnetic metal ions into the emulsified solution and uniformly stirring to obtain a mixed solution; (4) adding a solution containing carbonate or hydroxyl into the mixed solution, so that the carbonate or hydroxyl reacts with the magnetic metal ions to form a coating wall material of the capsule; (5) performing cooling treatment on the solution in the stirring state in (4) until the microcapsule is coagulated into a small spherical shape, and then the recyclable phase change microcapsule is obtained after separation, washing and drying. The application can realize the repeated use of the microcapsule, and the capsule wall of the microcapsule is all inorganic material with magnetism, which has high flame retardance, mechanical strength and thermal conductivity, so that the microcapsule can be better used in the field of building energy-saving materials.

The utility model relates to the technical field of carbonization furnace, and disclose self -heating sectional type biomass carbonization furnace, including heat -exchangeable heating part and carbonization part, the carbonization part detachably set in heating part top, and heating part top recess forms the recess, the carbonization part outside forms the protruding part matched with recess, and the carbonization part inside forms the inner chamber containing raw material to be carbonized, the heating part inside forms the combustion chamber containing fuel, and heating part one side opens and forms the feeding hole communicated with combustion chamber, the utility model discloses through setting detachable heating part and carbonization part, utilize the protruding part on carbonization part and recess on heating part and engage, make carbonization part install to the top of heating part, when needing to maintain device, if carbonization part goods heating part one of parts is damaged, only need to maintain corresponding heating part goods or carbonization part, do not need integral dismounting replacement, reduce the difficulty of maintenance and use cost in later period, improve maintenance efficiency.

The application provides a grinding machine plate fixing device for fixing a plate on an electromagnetic chuck of a grinding machine, which comprises a base plate, a shell arranged on the base plate, a lifting frame arranged in the shell, an elastic member arranged between the lifting frame and the base plate, two groups of installation rails arranged on the base plate and capable of sliding relative to each other, two groups of clamping plates arranged opposite to each other on the installation rails, clamping grooves arranged on the clamping plates, and two groups of driving mechanisms arranged on the lifting frame and connected with the two groups of installation rails, so as to drive the installation rails to open and close during the lifting of the lifting frame. The device can control the lifting of the lifting frame under the conditions of power-off and power-on of the electromagnetic chuck, and drive the two groups of installation rails to move in opposite directions and open and close under the action of the driving mechanisms, so that the plate is quickly fixed or released, and the plate does not need to be manually fixed and installed, thereby effectively improving the working efficiency of grinding.

The application discloses a high-rate valve-regulated lead-acid battery and a preparation method thereof. The battery comprises a battery shell, a positive plate, a negative plate and an electrolyte arranged in the battery shell. The positive plate and the negative plate are both honeycomb lattice structure plates, and the positive plate is coated with a positive active material, and the negative plate is coated with a negative active material. The components of the positive active material include lead powder, graphite, sulfuric acid, nano lead dioxide and pure water. The components of the negative active material include lead powder, barium sulfate, sodium lignosulfonate, graphene composite additive and carbon black. The discharge rate of the high-rate valve-regulated lead-acid battery can reach 3-5C, and the discharge capacity retention rate is above 95% under the 1C discharge rate, which can meet the demand of 5G base stations, data centers and other fields for instantaneous large current and high power output.

This invention discloses a waste-to-energy flue gas denitrification device, belonging to the field of flue gas denitrification technology. It includes a flue gas denitrification tower and a flue gas inlet pipe connected together. The flue gas inlet pipe is connected to an ammonia water inlet pipe. One end of the ammonia water inlet pipe extending into the flue gas inlet pipe is connected to multiple sets of horizontally equidistant ammonia diversion pipes. The front ends of each set of ammonia diversion pipes are connected to a diversion and connecting chamber. A connecting sleeve is connected to the front end of the diversion and connecting chamber. An ammonia water injection pipe is connected to the side of the connecting sleeve away from the diversion and connecting chamber, and the ammonia water injection pipe is connected to its corresponding ammonia diversion pipe. The ends of the multiple sets of ammonia water injection pipes away from the connecting sleeve are fixedly connected to the same closed side cover plate. A horizontally movable cleaning scraper is fixedly installed on one side of each set of ammonia water injection pipes, which cleans the nozzle openings by repeatedly moving horizontally. This invention solves the problem of nozzle blockage and difficulty in repair caused by the nozzle opening's location and structure.