216 results about "Nozzle clogging" patented technology

The invention provides a medical community work assisting device which comprises two supports, a water spraying pipe, a water conveying pipe and two spray heads, and a cleaning mechanism used for cleaning the spray heads is arranged on the outer front side of the water spraying pipe. The dredging assembly can linearly reciprocate back and forth through the execution assembly in the cleaning mechanism, the dredging assembly can directly act on the nozzle, blockages are rapidly and thoroughly removed through physical acting force, and automatic cleaning of spray holes of the spray head is achieved; the problem of nozzle blockage caused by disinfection liquid residues or external impurity accumulation is effectively avoided, the continuity and uniformity of spraying disinfection are guaranteed, the dredging effect is further enhanced through the synergistic effect of the optimization assembly, the optimization assembly can drive the dredging rod and the cleaning brush on the surface of the dredging rod to rotate while the dredging rod is used for dredging, and the dredging effect is improved. When the cleaning brush rotates, the contact area between the cleaning brush and the inner wall of the nozzle can be better increased, and tiny parts of the inner wall of the nozzle can be touched.

The invention relates to the technical field of 3D printing devices, provides FDM ceramic 3D printing equipment, and solves the problems of interlayer bonding strength reduction and dimensional deviation accumulation caused by nozzle blockage in the prior art. The device comprises a rack; the X-axis translation assembly is arranged at the top of the rack; the nozzle assembly is arranged on the X-axis translation assembly, and an extrusion runner and a discharge port communicated with the runner are arranged in the nozzle assembly; the reversible driving mechanism is connected to the extrusion flow channel and is used for driving the material in the extrusion flow channel to be extruded forwards or sucked backwards; the pressure sensor is arranged on one side of the extrusion runner and is used for monitoring the pressure in the extrusion runner in real time; by monitoring the pressure change and the pressure change rate in the extrusion runner, the abnormal pressure rise before the nozzle is blocked can be accurately captured, and the unblocking operation is triggered in advance.

The invention provides an intelligent decision-making dynamic cooperative control method for a roller cooling system, and relates to the field of industrial production intelligent control. The method comprises the following steps that the spraying state of each nozzle is monitored in real time; the minimum cooling liquid injection amount of process cooling in the rolling process is calculated; the sectional cooling flow in the rolling process is calculated, and the sectional cooling flow is not lower than the minimum cooling liquid injection amount; master-slave control is formed by process cooling and subsection cooling, the process cooling is responsible for macroscopic temperature field regulation and control, and local defect compensation is executed by the subsection cooling; when it is detected that the nozzles are blocked or fail, the flow compensation algorithm of the adjacent nozzles is started, and the standby micro nozzles are activated to execute fine compensation flow distribution; and after sectional cooling fails, on the basis of executing fine compensation flow distribution, roller fine cooling is adopted to eliminate defects of composite wave shapes, namely high-order plate shapes. The method can effectively solve the problem of high-order plate shape defects caused by failure of a sectional cooling system, and the stability and precision of plate shape control are improved.

The invention discloses a method for improving castability of aluminum-containing steel in a continuous casting process, which comprises the following steps of: S1, controlling components of molten steel, and accurately controlling the content of acid-soluble aluminum in molten steel of a continuous casting ladle to be 0.020-0.060% according to mass percent; s2, calcium treatment is conducted on the molten steel, and the calcium-aluminum ratio is controlled to range from 0.10 to 0.15; s3, continuous casting process control is conducted, specifically, the superheat degree of tundish molten steel is stably controlled to range from 15 DEG C to 30 DEG C, meanwhile, constant pulling speed operation is adopted, and the pulling speed fluctuation range is controlled within + / -0.1 m / min; and S4, the content of SiO in the casting powder is reduced to be smaller than or equal to 20%, and meanwhile, the alkalinity R of the casting powder is 1.5-2.0. The continuous casting process is ensured to be smooth, nozzle nodulation and casting blank surface defects are effectively prevented, and the production efficiency and the product quality are remarkably improved.

The utility model relates to the technical field of ferrous metallurgy, in particular to a continuous casting machine crystallizer inlet water filtering device which comprises a filter chamber, a filtering assembly, a reversing assembly, a water inlet pipe and a water outlet pipe. The water inlet pipe and the water outlet pipe are respectively connected with the filter chamber; the filter assembly comprises a filter screen supporting piece and at least two filter screens, the filter screens are connected with the filter screen supporting piece, and the filter screen supporting piece is connected with the inner side wall of the filter chamber; the reversing assembly comprises an upper partition plate, a lower partition plate and a reversing rod, the reversing rod penetrates through the filter screen supporting piece, namely, the filter assembly is located between the upper partition plate and the lower partition plate, and the water filtering channel is replaced under the condition that water supply is not interrupted through the separation and reversing effects of the reversing assembly. The water filtering device is simple in structure, water entering the crystallizer is filtered, the casting blank quality problem caused by blockage of a water seam and a nozzle of the crystallizer is avoided, water supply of the crystallizer does not need to be interrupted when the water filtering channel is replaced, and therefore production efficiency is improved.

The invention relates to the technical field of electric power construction, in particular to a construction device, construction method and structure of a high-pressure rotary spraying type screw anchor composite foundation, which comprises a high-pressure rotary spraying type screw anchor, a high-pressure grouting system, a power screw-in system and a rotary joint. The situation that a nozzle is blocked is avoided, high-pressure rotary spraying is achieved when the anchor body spirally drills downwards, high-pressure rotary spraying cement slurry is used as a soil improvement means, disturbance related to anchor installation is relieved, the performance of soil in a disturbance area is enhanced, and the diameter of an anchor rod is greatly increased so that the buckling resistance can be improved; and meanwhile, the rotary jet grouting scheme of the large-diameter spiral anchor is considered, and application and popularization of the high-pressure rotary jet type spiral anchor composite foundation can be powerfully promoted.

The utility model discloses a submerged burner with multiple nozzles, which comprises a burner body and at least one nozzle, at least one first passage and at least one second passage are formed in the nozzle, the at least one first passage is derived from a common first fluid passage, and / or the at least one second passage is derived from a common second fluid passage, wherein at least one valve is provided upstream of the at least one first passage and / or the at least one second passage, the valve providing selective communication of the first fluid and / or the second fluid to the outlet of the first passage and / or the outlet of the second passage. The reasonable design of the public fuel channel and the public oxidant channel saves space and reduces cost. The design of the one-way valve has the effect of preventing backfire from burning to an adjacent burner, and the nozzle cannot be blocked.

The multi-path nozzle baffle structure comprises a multi-path nozzle and a baffle, the multi-path nozzle comprises a shell, a nozzle body and an arch-shaped sealing ring, and an air channel is formed in the shell; the nozzle body comprises a head part, a nozzle main body and three nozzles which are connected into a whole, the three nozzles are uniformly distributed in the circumferential direction of the outer end face of the nozzle main body and correspond to the baffle in position, the nozzle main body is provided with three nozzle air inlet and outlet groups which are uniformly distributed in the circumferential direction of the nozzle main body, and the three nozzle air inlet and outlet groups are respectively communicated with the three nozzles; the head and the nozzle body are both located in the shell and rotationally connected. The arch-shaped sealing ring is fixed in the shell and rotationally connected with the nozzle body, and the arch-shaped sealing ring surrounds the two nozzle air inlet and outlet sets, so that the remaining nozzle air inlet and outlet set communicates with the air channel. When one nozzle channel is blocked by a foreign matter, the nozzle body is rotated by a certain angle so that the unblocked nozzle channel can be connected into the air channel, and the positioner fault caused by blockage of the nozzle can be rapidly solved.

The invention relates to the technical field of desulfurization equipment, and discloses a desulfurization device which comprises a tower body, the tower body is communicated with a gas outlet pipe, a discharge pipe and a liquid outlet pipe, and a double-centrifugal separation system, a spray desulfurization system and an adsorption desulfurization system are sequentially arranged in the tower body from bottom to top; the double-centrifugal separation system comprises an inner centrifugal barrel, the outer side wall of the centrifugal barrel communicates with an air inlet pipe, the air inlet pipe is arranged in the tangential direction of the side wall of the centrifugal barrel, and an inner spiral channel is formed in the inner centrifugal barrel through a plurality of spirally-arranged inner spiral plates; the inner wall of the tower body is provided with an outer spiral channel through a plurality of spirally arranged outer spiral plates, the inner centrifugal barrel is provided with a flow guide hole, and the flow guide hole is an inclined round hole. Centrifugal separation is performed twice through the double centrifugal separation systems, so that the content of particles entering a subsequent spraying desulfurization system and an adsorption desulfurization system is greatly reduced, and the adsorption desulfurization efficiency is improved. The nozzle blocking risk and the pollution of an adsorption material are reduced, and the overall desulfurization efficiency is effectively improved.

The invention relates to the technical field of sensor detection, in particular to a sensor environment simulation testing device, which comprises a shell part, the clamping part is used for clamping and fixing a sensor to be tested and detected; the environment simulation part is installed in the shell part and generates a simulation environment for detection according to the working environment of the sensor; the system has three different single simulation environments and two different combined simulation environments, environment simulation can be better performed for sensor testing, the simulation environments are more real and comprehensive, and it is ensured that obtained sensor testing data are more accurate; the spray head is automatically opened through water pressure and automatically closed when the water pressure is low, the problem that the spray head is blocked by sandy soil can be avoided, meanwhile, water flow impacts the water rotating strip when passing through the water diversion channel, then the blocking body is driven to rotate, the water flow also has the rotating diversion effect, spraying is more uniform, the environment simulation degree is increased, and the testing effect is improved.

The invention discloses a pipeline transformation method for preventing a nozzle of a heat treatment furnace from being blocked, which comprises the following steps of: adding two sections of pipelines, namely a straight pipeline (2) and a bypass pipeline (3), on a gas pipeline (1) at the front end of a nozzle instrument of the heat treatment furnace; then, corrosion product filtering devices (4) are installed on the straight-through pipeline (2) and the bypass pipeline (3), under the normal condition, the straight-through pipeline (2) is opened, the bypass pipeline (3) is closed, coal gas is input from the straight-through pipeline (2), and powdery and blocky solid corrosion products are filtered through the corrosion product filtering devices (4); during maintenance, the straight-through pipeline (2) is closed, the bypass pipeline (3) is opened, coal gas is input from the bypass pipeline (3), powdery and blocky solid corrosion products are filtered through the corrosion product filtering equipment (4), and at the moment, the straight-through pipeline (2) is maintained. The device has the advantages of effectively preventing the nozzle of the steel mill heat treatment furnace from being blocked, realizing maintenance without shutdown, and improving the heating effect of the steel heat treatment furnace.

The application discloses a wall coating spraying robot and belongs to the technical field of coating spraying, which comprises a mobile body, a spraying manipulator arranged on the mobile body, a material collecting seat installed on the spraying manipulator, a plurality of connecting tubes, one end of each of the connecting tubes being installed on the material collecting seat and the other end of each of the connecting tubes being detachably connected with a spraying nozzle, a sealing disc rotatably connected in the connecting tube, a transmission mechanism arranged on the outer wall of the connecting tube, a through-plugging mechanism connected with the sealing disc, when the spraying nozzle is blocked, the sealing disc is closed by operating the transmission mechanism, and the spraying holes of the spraying nozzle are synchronously dredged by the through-plugging mechanism when the sealing disc rotates, so that the coating spraying robot can avoid needing to stop and clean multiple times, the operation is simple, and the working efficiency is high; when the spraying nozzle needs to be detached, the sealing disc can be closed by the transmission mechanism, the transmission mechanism releases the restriction on the spraying nozzle at the moment, and then the spraying nozzle can be detached, the passage of the coating can be interrupted due to the closure of the sealing disc, the coating can be prevented from being sprayed out when the spraying nozzle is detached, and the operation safety is greatly improved.

This utility model discloses a slurry proportioning adjustment device for biomineralization, including a mixing tank and a support frame. The support frame is located at the center of each of the four sides of the top of the mixing tank. A support cover is provided at the bottom of the mixing tank via legs. A stirring shaft is located at the center of the mixing tank, with stirring rods evenly distributed on the stirring shaft. Rotating rods are located at the center of both sides of the support cover, and stirring rods are evenly distributed on the rotating rods inside the mixing tank. An annular tube is located at the top of the mixing tank, and an inlet pipe connected to an external water storage tank is located on one side of the top of the annular tube. An annular toothed block is located on the top of the mixing tank inside the annular tube, and an L-shaped brush facing the annular tube is located at the center of one side of the bottom of the annular toothed block. This utility model improves the uniformity of the slurry by achieving more comprehensive mixing, and the annular tube can be cleaned after mixing to prevent nozzle clogging.

This application relates to a gluing machine and process for footwear athletic shoes. The gluing machine includes a transport frame, a spray gun tube, and a sealing element. A nozzle is slidably connected inside the spray gun tube, and an air inlet pipe is connected to the outer wall of the spray gun tube. An air pump is located at the end of the air inlet pipe away from the spray gun tube. An elastic element is provided between the sealing element and the nozzle. The elastic element has elastic potential energy to push the nozzle towards the air inlet pipe. When the air pump is turned off, the nozzle can move away from the sealing element under the action of the elastic element. The sealing element includes a rubber stopper. A sealing hole is opened on the outer wall of one end of the rubber stopper. The glue outlet end of the nozzle is slidably connected to the rubber stopper through the sealing hole. After the gluing of the shoe upper is completed, the nozzle moves away from the rubber stopper under the action of the elastic element until the glue outlet end of the nozzle retracts into the rubber stopper through the sealing hole. The inner wall of the sealing hole wraps around the glue outlet end of the nozzle, thereby reducing the risk of residual glue at the nozzle outlet end hardening upon contact with air, leading to nozzle clogging.

The utility model relates to the technical field of aluminum powder atomizers, in particular to an atomizer nozzle assembly which comprises a nozzle body, and the nozzle body comprises a molten aluminum circulation body, a primary air cavity wrapping body and a secondary air cavity wrapping body. The replaceable nozzle is composed of a round pipe section, a flange section connected with the lower end of the round pipe section and an upper bent section connected with the outer edge of the flange section, a limiting spigot corresponding to the round pipe section is formed in the lower edge of the inner circumferential face of the molten aluminum circulation body, and a plurality of primary airflow inlets corresponding to the primary impact flow channels are formed in the outer circumferential wall of the round pipe section. A plurality of secondary airflow inlets corresponding to the secondary impact runners are formed in the peripheral wall of the round pipe section, an annular positioning table located on the inner side of the upper bent section of the replaceable nozzle is arranged at the lower end of the secondary air cavity wrapping body, and the flange section of the replaceable nozzle is connected and fixedly connected with the bottom face of the annular positioning table. When the nozzle is blocked, the nozzle main body does not need to be replaced, so that the use cost is saved.

To provide: an apparatus for detecting nozzle clogging, which is easy to install, highly workable even when applied to a large number of nozzles, and easy to maintain; a nozzle equipped with the apparatus; and a method for detecting or sensing the nozzle clogging using the apparatus.SOLUTION: An apparatus 2 for detecting nozzle clogging is prepared using: a power generation module 6; and a sensor 7 that can be driven by the power generated by the power generation module 6 and that can detect clogging of the nozzle 1 and / or the piping to which the nozzle 1 is attached.SELECTED DRAWING: Figure 2

The utility model provides a novel fluid heat preservation device for a nozzle, and belongs to the technical field of nozzles. Comprising a heat preservation assembly, and the heat preservation assembly comprises a raw material conveying pipe provided with a first outer cylinder; the second outer cylinder is arranged in the first outer cylinder; the thermal insulation cavity is formed between one side wall of the outer cylinder and the second side wall of the outer cylinder; the heating element is arranged on one peripheral side of the outer cylinder; according to the device, the heat preservation assembly heats and preserves heat of the device, the phenomenon that a nozzle is blocked due to cooling is avoided, a first discharging cavity and a second discharging cavity are formed in a main discharging opening of the adjusting assembly and are separated through a partition plate, and when the device is used, the adjusting piece is rotated to drive the connecting piece and the partition plate to move towards one side; the first discharging cavity and the second discharging cavity are connected, switching from a conical opening to a flat opening is achieved, the problem that a discharging opening cannot be replaced in an original scheme is solved, adjustment is more convenient, switching can be achieved without replacing the discharging opening, and convenience is greatly improved.

The utility model discloses a novel laminar flow cooling pressure stabilizing header device, which relates to the technical field of hot rolling laminar flow cooling headers and comprises a header main pipe, a flow stabilizing pipe and a filter screen, one end of the header main pipe is connected with a connecting hose through a connecting component, the other end of the connecting hose is connected with a connecting pipe, a pneumatic butterfly valve is mounted on the connecting pipe, and the filter screen is connected with the pneumatic butterfly valve. A plurality of upper spray pipes are connected to the header main pipe, a clamping ring is arranged at one end of the flow stabilizing pipe, a first clamping groove for clamping of the clamping ring is formed in one end of the header main pipe, a water outlet is formed in the flow stabilizing pipe, and the filter screen is clamped to one end of the header main pipe through a clamping assembly; through the arrangement of the flow stabilizing pipe, water sprayed by the plurality of spray pipes can be uniform, the quality of strip steel is ensured, the quality objection is reduced, production accidents caused by non-uniform cooling are reduced, and through the arrangement of the filter screen, the water can be filtered, and the blockage of the plurality of spray nozzles is reduced, so that the cooling efficiency is improved.

The objective is to provide a snow-melting nozzle clogging improvement tool and method that have a simple structure, exhibit excellent performance in improving clogging, and offer excellent workability. [Solution] A snow melting nozzle clogging improvement tool for improving clogging of water spray holes 21 formed in a snow melting nozzle 20 embedded in the road surface, the tool having a contact portion 1 that comes into contact with the water spray hole forming surface 20a of the snow melting nozzle 20, the contact portion 1 being configured to generate impact or vibration, and the contact portion 1 being made of an elastic material, the tool being configured to improve clogging of the water spray holes 21 by bringing the contact portion 1 into contact with the water spray hole forming surface 20a of the snow melting nozzle 20 and continuously applying impact or vibration.

The utility model discloses a novel anti-wear and anti-blocking flue ammonia injection device, which relates to the technical field of flue ammonia injection and comprises a flue body, an ammonia injection main pipe body and a connecting support pipe, and an injection branch pipe is welded inside the flue body. According to the novel anti-abrasion and anti-blocking flue ammonia injection device, the anti-abrasion baffle is additionally arranged on the injection branch pipe on the inner side of the flue body, and the anti-blocking baffle is additionally arranged on the nozzle body, so that scouring of flue gas and particulate matter in the flue gas to an ammonia injection structure is relieved, and the situation that due to the fact that the nozzle body is blocked, ammonia injection is not uniform, and the denitration effect is affected is effectively avoided; by optimizing the structure, prolonging the service life of the injection structure, reducing the structure maintenance and replacement frequency and improving the overall stability of a denitration system, the novel anti-abrasion and anti-blocking flue ammonia injection device solves the problems that after the ammonia injection structure operates for a period of time, the conditions of abrasion and nozzle blockage are caused, the ammonia injection is not uniform, and the denitration effect is influenced.

The utility model discloses a stack spray atomizing nozzle for cleaning and cooling, which comprises a connecting part, the bottom of the connecting part is movably connected with a nozzle, the top of the connecting part is movably connected with an end cover, the top of the end cover is fixedly connected with a connecting pipe, the inside of the connecting part is fixedly connected with a support plate with a circular ring structure, and the top of the support plate is provided with a filter screen. A pressing plate of a circular ring structure is fixedly connected into the end cover, and the top of the filter screen is clamped between the pressing plate and the supporting plate. By means of the structure, the filter screen is arranged in the connecting part and can filter water, so that nozzle blockage caused when impurities in the water flow in the nozzle is prevented, normal use of the nozzle is guaranteed, the nozzle and the connecting part are convenient to detach and separate through the movable connection mode between the nozzle and the connecting part, and the service life of the nozzle is prolonged. And therefore, different nozzles can be conveniently replaced for use according to use requirements, and the use is more flexible.

This invention belongs to the technical field of humidification devices, specifically relating to a workshop cooling and humidification device, including a main pipeline and a riser. The main pipeline is equipped with nozzles, and the nozzles are mounted on connecting frames. The connecting frames are connected to impact blocks. The nozzles are equipped with an anti-clogging mechanism, which includes an insertion rod, a first spring, and a transmission assembly. The impact block has a sliding groove. The transmission assembly includes a first bracket, a pull wire, and a plastic ball. One end of the pull wire is fixedly connected to the insertion rod. The main pipeline is equipped with an annular seat, and the other end of the pull wire extends into the main pipeline. The plastic ball is fixedly connected to the pull wire. The pull wire is machined with a sliding rod, the annular seat has a sliding cavity, and the sliding rod is machined with a sealing sliding plate. The first bracket is equipped with a fixed pulley, and the pull wire passes over the fixed pulley. This invention utilizes the water flow in the main pipeline to allow the insertion rod to be inserted into and withdrawn from the nozzle port. During use, the insertion rod can withdraw from the nozzle port; after use, the insertion rod can be inserted into the nozzle port, preventing nozzle clogging.

The utility model discloses a flying dust processing device for coal mine production, which comprises a case, a rack, a fog gun barrel and a spray pipe, the rack is fixedly connected to the top of the case, the fog gun barrel is fixedly connected to the inside of the rack, the spray pipe is arranged on the front side of the fog gun barrel, and the front side of the fog gun barrel is provided with placing grooves at equal intervals. According to the utility model, the case, the rack, the fog gun barrel, the spray pipe, the placing groove, the locking block, the inserting hole, the fixing block, the cavity, the positioning mechanism, the L-shaped inserting rod, the pressure spring, the inclined plate, the adjusting mechanism, the pulling rod, the vertical rod, the pushing block, the guide rail, the limiting rod and the magnetic attraction block are matched for use, so that the problem that the fog gun cannot be used in the use process is solved; the spraying pipe is easily influenced by impurities such as dust, particulate matters and incrustation scale, so that a nozzle is blocked, once the nozzle is blocked, the spraying effect is greatly reduced, and the normal work of equipment is seriously influenced.

The invention discloses a method for preventing a gas atomization nozzle from being blocked by optimizing the coupling relation between atomization pressure and a flow guide pipe structure, efficient and continuous atomization is achieved by matching the pore diameter (3-6 mm) of a flow guide pipe, the shrinkage angle (30-60 degrees), the tail end platform width (smaller than or equal to 1 mm) and the atomization pressure (2.5-4.5 MPa) and combining a high-heat-resistant ceramic material (ZrO2 / SiC) and technological parameter optimization (GMR = 1.5-1.7, and the melt temperature is 1500-1650 DEG C). According to the method, the nozzle blocking risk is remarkably reduced, the powder D50 is 21-25 microns, the satellite powder proportion is smaller than or equal to 5%, the equipment maintenance cost is reduced by 20%, and the method is suitable for industrial production of high-precision metal powder.

This utility model relates to the field of gas carriers and provides a seawater spraying system for gas carriers. It includes a deck spray pump, the input end of which is connected to a seawater main pipe, and the output end of which is connected to a spray main pipe. The spray main pipe connects to multiple spray branches, and high-pressure compressed gas pipelines and low-pressure compressed gas pipelines are connected to the spray main pipe. Seawater is used to spray the entire deck and critical equipment compartments, achieving functions such as cooling and fire suppression. A vent valve is installed to promptly drain seawater from the pipelines. Freshwater pipelines, in conjunction with high-pressure compressed air pipelines, are used to dilute and flush the seawater in the pipelines, preventing nozzle clogging and corrosion from residual seawater. Low-pressure compressed air, in conjunction with a timer, intermittently blows through the pipelines and nozzles, keeping the pipelines dry and preventing nozzle clogging, ensuring the entire seawater spraying system is in optimal condition.

This invention relates to the field of additive manufacturing technology and discloses a nozzle suitable for additive manufacturing of continuous fiber reinforced composite materials. The nozzle includes a main body and a stirring mechanism installed at the bottom of the main body. During operation, the stirring mechanism reduces the risk of material carbonization due to excessively high nozzle temperature. In this invention, the openings of the rotating plate and the stirring plate are staggered, causing softened material to accumulate on the top of the stirring plate. When the accumulated material exceeds the unopened portion of the stirring plate, it pushes the mixing plate to rotate. This rotation mixes the internal and external materials, reducing nozzle clogging caused by overheating and material carbonization during prolonged operation of the additive manufacturing machine. This improves the smoothness of material output from the nozzle during additive manufacturing.

This utility model relates to the field of water spraying devices, and more particularly to a high-pressure fine water mist spraying device, including a water tank; it also includes a cleaning seat and a nozzle. A filter screen is fixedly connected inside the water tank, and a cleaning seat is provided between the water tank and the filter screen. A water pump is fixedly connected to the upper end of the inner wall of the water tank and inside the filter screen. A support base and a controller are fixedly connected to the upper end of the water tank, and an internal toothed ring is rotatably connected to the inner wall of the support base. Through the use of the cleaning seat, external water is filtered through the filter screen, effectively intercepting impurities in the liquid, preventing nozzle clogging, and improving atomization efficiency. The water pump pumps the filtered water in the water tank to the distribution pipe, and the water is sprayed out by the nozzle for water spraying. After a period of use, the cleaning seat moves up and down to thoroughly remove the sediment on the outer wall of the filter screen and the inner wall of the water tank. Regular cleaning is performed, which has a high degree of automation, improves the cleaning effect and efficiency, reduces the maintenance frequency, and extends the service life of the nozzle.

This invention discloses a deodorization device for wastewater treatment, comprising: a rotating rod that rotates circumferentially within a sealed chamber; a rotating assembly disposed on the surface of the rotating rod, with an airflow pipe on one side of the rotating assembly, the airflow pipe being transmitted to the rotating rod via the rotating assembly; a centrifugal cup located above a blade assembly to carry liquid, the centrifugal cup being connected to the rotating rod, the centrifugal cup having a strip-shaped protruding water-retaining ring on its outer side, and a water-spraying groove on its surface, the water-spraying groove being converging from the inside out, and the water-spraying groove corresponding to the position of the water-retaining ring; and a water supply assembly with its outlet located at the top of the centrifugal cup. This invention generates water mist by utilizing the purely mechanical physical principle of centrifugal projection and impact crushing, and the large size of the water-spraying groove completely solves the problem of nozzle clogging caused by particulate matter and bioflocs in the deodorizing absorption liquid, achieving maintenance-free operation.

The present invention provides a technology for maintaining, in a mold, an ideal fluidized state which was assumed at the time of design, by preventing blockage of a nozzle. Provided is a submerged entry nozzle through which, when continuous casting of steel is carried out, molten steel is supplied from a molten steel storage container into a mold of a continuous casting machine that carries out the continuous casting, wherein: an end of a nozzle body of the submerged entry nozzle which is submerged in the molten steel in the mold is closed; an upper portion and a lower portion of a part of the nozzle body which is submerged in the molten steel are each provided with a pair of discharge ports that are symmetrical with respect to the central axis; an inner bottom of the nozzle body has an inclination which continues to a lower end of each of the discharge ports in the lower part; and a downward inclination angle θ1 with respect to the horizontal direction is within the range of not less than 10° but not more than 45°.

According to the technical scheme, the desulfurization device is characterized in that the desulfurization device comprises a desulfurization bin, an air inlet pipe is arranged outside the desulfurization bin, an exhaust pipe is arranged on the outer circle wall face of the desulfurization bin, an installation disc is arranged in the desulfurization bin, a plurality of nozzles are arranged on the bottom face of the installation disc, and the nozzles are arranged in a cross shape; the rotating assembly is arranged on the top face of the mounting disc and used for rotating the mounting disc, through the arrangement of a rotating shaft, a liquid inlet pipe and a rotating shaft rotating sleeve, an absorbent can be continuously and stably supplied to the nozzle, and when a driving motor is started, the driving motor drives a second belt wheel to rotate; the second belt pulley drives the first belt pulley to rotate through the belt, so that the rotating shaft is driven to rotate, the rotating shaft drives the mounting disc in the desulfurization bin to rotate, the spraying range of the nozzles is increased, a small number of nozzles meet the spraying requirement, the burden of the pump is reduced, and the risk of nozzle blockage is reduced.