192 results about "Blowpipe" patented technology

The utility model relates to the technical field of gas turbine power plants, in particular to a safety ventilation device for a gas turbine power plant, which comprises a blowpipe, a connecting pipe and a filter component, the connecting pipe is fixedly connected with the blowpipe, and the filter component comprises two groups of barriers, an extension plate, a fixing plate, a driving motor, a driving gear, a protective cover, a lifting part and a cleaning part. The extension plate is fixedly connected with the blowing pipe; the fixed plate is fixedly connected with the extension plate; the output end of the driving motor is fixedly connected with the driving gear; the driving gear is meshed with the barrier pieces; in this way, the filter screen can be effectively prevented from being abraded, the service life of the filter screen is prolonged, when the filter screen is cleaned through the structural arrangement, the ventilation device can work normally, and the practicability of the device is improved.

The invention relates to the technical field of ultrasonic detection, in particular to an ultrasonic scanning water removal mechanism. Comprising a machine shell, a wind shell is fixed to the middle of the top of the machine shell, a feeding port and a discharging port are formed in the positions, at the two ends of the wind shell, of the top of the machine shell respectively, a feeding baffle and a discharging baffle are slidably connected to the positions, at the feeding port and the discharging port, of the top of the machine shell respectively, and a conveying belt for conveying from the feeding port to the discharging port is arranged in the machine shell. A plurality of vertical downward blowing pipes are arranged in the air shell, the blowing pipes are conical, and the diameter of the upper ends of the blowing pipes is smaller than that of the lower ends of the blowing pipes. The detected jig is placed into the machine shell from the feeding port, and the feeding baffle and the discharging baffle slide to shield the feeding port and the discharging port. The conveying belt conveys the jig to the air shell, the air blowing pipe blows air to the surface of the jig, and water on the surface of the jig is removed. And finally, the jig is taken out from the discharge hole. The diameter of the lower end of the blowing pipe is large, the blowing area is large, and the water removal efficiency is high.

The invention discloses a rapid assembly welding construction method for boiler steam blowpipes. The method comprises the steps that small-pipe-diameter and large-pipe-diameter welding auxiliary structures are manufactured, pipelines are hoisted to the installation position for butt joint, the corresponding welding auxiliary structures are selected according to the pipe diameters so that pipe openings of the pipelines can be aligned and preliminarily welded and positioned, and final butt joint welding is completed after the auxiliary structures are dismantled. An auxiliary mounting and welding structure of the automatic screwing device is further manufactured, and the device enables a screwing driving mechanism to be in butt joint with a connecting bolt, a nut or an adjusting bolt by adjusting the positions of all parts and drives the screwing driving mechanism to rotate. According to the assembly welding device, the technical effects of quickly and accurately completing assembly welding of the boiler steam blowpipes and improving the construction efficiency and quality are achieved.

The utility model discloses an efficient ash removal device for a mine dry dust collector, which relates to the technical field of dust treatment and comprises a fixed support, a main air inlet pipe is arranged at the center of the fixed support in a penetrating manner, a connecting cylinder is fixedly mounted below the horizontal position of the fixed support, and a filter cylinder sealing cover plate is fixedly mounted at the bottom of the connecting cylinder. The outer wall of the main air inlet pipe penetrates through the circle center of the connecting cylinder and the circle center of the filter cylinder sealing cover plate, a rotary blowing pipe is fixedly installed below the outer wall of the main air inlet pipe, a plurality of blowing holes are formed in the outer wall of the rotary blowing pipe in an annular array mode, and a reset spring is fixedly installed at the top of the rotary blowing pipe. And the top of the reset spring is fixedly connected with the bottom of the filter cartridge sealing cover plate. According to the utility model, the main air inlet pipe and the rotary blowing pipe are matched with each other, so that gas is uniformly sprayed out by utilizing the rotary blowing pipe when the dust in the filter cartridge of the dry dust collector is cleaned, and the dust cleaning efficiency of the mine dry dust collector is obviously improved.

The utility model belongs to ironmaking technical field especially is a kind of ironmaking impurity removal mechanism, including shell body, shell body one side inner wall is equipped with mounting plate, and the inside installation of shell body is equipped with connecting plate, connecting plate one side is provided with several guide plates, the bottom of guide plate is all provided with electromagnet, mounting plate one side is equipped with several electric telescopic handle, electromagnet one side both ends are connected with corresponding electric telescopic handle output end through support, connecting plate one side is equipped with blowpipe, and the one side of blowpipe is provided with several branch pipes;It can be more thoroughly cleaned to all non-raw material impurities in iron ore raw material, so that impurities and iron ore raw material are discharged from different discharge ports respectively, a large amount of dust on the surface of iron ore is cleaned during impurity removal process, iron ore raw material and impurities are more accurately distinguished, ore similar in appearance with iron ore raw material can be picked out, and the impurity removal effect is better.

The application discloses a device and method for preventing dry burning of a reheater of a waste heat boiler, and the device comprises a high-pressure blowing unit, a medium-pressure blowing unit, a low-pressure blowing unit and a reheater unit. The high-pressure blowing unit and the medium-pressure blowing unit can ensure that the reheater unit has steam flow in the whole blowing process, and the low-pressure blowing unit can stabilize the blowing pressure. The device and method can prevent the reheater from being in a dry burning state during blowing.

The utility model relates to an automatic cleaning device for a circulating hot air filter screen of a high-performance carbon fiber oxidation furnace. The automatic cleaning device comprises an ash collecting box, an ash blowing pipe, a fixing head, a steel wire rolling brush, a bearing seat, a connector, an air pipe quick-plug connector, a driving device, a connecting plate, a plug and a fixing piece. According to the device, the synergistic effect of compressed air and mechanical ash removal is adopted, an adjustable bolt groove hole structure is arranged to achieve abrasion compensation of the steel wire rolling brush, a fixing piece and a plug are specially designed to ensure airtight connection, and dust collected in the ash removal process is discharged through a bottom flange opening. The device realizes automatic cleaning of the oxidation furnace filtering system, and has the characteristics of high ash cleaning efficiency, stable structure and convenience in maintenance.

The invention relates to the technical field of waste gas treatment, in particular to a self-maintenance type waste gas treatment system for stainless steel fastener production, the self-maintenance type waste gas treatment system comprises an outer shell and a damping support, and the interior of the outer shell is divided into an upper gas purification chamber and a lower waste gas chamber through a fixed partition plate. According to the self-maintenance type waste gas treatment system for stainless steel fastener production, the top closing cover plate is arranged at the opening position of the upper end of the outer shell, the electric control type top maintaining, disassembling and assembling system is installed on the top closing cover plate, and the opening of the upper end of the detachable filter bag module can be closed through the electric control type top maintaining, disassembling and assembling system; kinetic energy can be prevented from leaking upwards in the reverse blowing process, kinetic energy waste is avoided, and the dust removal effect is improved; and a traditional blowing pipe is integrated in the fixed partition plate, so that the space of the upper air purification cavity is not occupied, and the utilization rate of the internal space can be effectively increased.

The utility model relates to the technical field of purification and dust removal, and discloses a purification dust remover blowing pipe fixing device which comprises an upper fixing mechanism and a lower fixing mechanism, the lower fixing mechanism is in threaded connection with the bottom of the upper fixing mechanism, and the lower fixing mechanism comprises a limiting unit and a welding unit. The limiting unit is in threaded connection with the bottom of the upper fixing mechanism, and the welding unit is in threaded connection with the bottom of the limiting unit. After the blowing pipe fixing device for the purification dust remover is installed, the suspension distance of the blowing pipe can be shortened, the influence of bending, vibration, displacement and the like of compressed air on the blowing pipe during blowing is effectively avoided, the stability of the blowing pipe is improved, and after the blowing pipe fixing device is put into use, a nozzle of the blowing pipe is always located in the center of a filter bag; the service life and the blowing effect of the filter bag of the dust remover are ensured, through the design of the independent welding seat, only welding spots on the two sides of the welding seat need to be damaged when the device is overhauled, the clamped limiting mechanism cannot be damaged, and the utilization rate is increased.

The invention discloses a pulse dust collector for grinding calcium carbonate, and belongs to the technical field of dust removers, the pulse dust collector comprises a barrel, the side wall of the lower part of the barrel is connected with an air inlet pipe, the side wall of the upper part of the barrel is connected with an exhaust pipe, the inner side of the barrel is fixedly provided with a fixed partition plate, and the top of the barrel is fixedly provided with a cleaning fan; the exhaust end of the cleaning fan is fixedly connected with a blowing pipe through a pulse valve, dust removal cloth bags are uniformly and fixedly mounted on the fixed partition plate, a fixed lower seat is fixedly mounted on the fixed partition plate, spray heads are uniformly and rotatably mounted on the fixed lower seat, and a transmission assembly for driving the spray heads to rotate is arranged between the adjusting plate and the spray heads. According to the pulse dust collector for calcium carbonate grinding processing, auxiliary pressurization can be carried out on gas in the pulse later process, efficient blowing of the dust collection bag is achieved through the rotary spray head, meanwhile, the slapping mechanism is assisted, effective dust removal of the dust collection bag is achieved, and the efficient dust collection effect of equipment is ensured.

1. Name of the product in this design: Portable electric blowpipe stand. 2. Purpose of this design: It is used as a support for an electric wind instrument. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This invention discloses a device for measuring the roll diameter of an uncoiler head based on a laser rangefinder, belonging to the field of roll diameter measurement technology. The device includes an uncoiler, a lifting machine, an uncoil assembly, an automatic cleaning and detection assembly, and a roll diameter measurement and control system. The detection assembly integrates a laser rangefinder sensor and a blowpipe. The roll diameter measurement and control system includes a data acquisition module, a data analysis and processing module, and an execution control module. The data acquisition module completes multi-source data acquisition and analog-to-digital conversion. The data analysis and processing module performs data filtering, roll diameter calculation, and sensor contamination determination. The execution control module triggers automatic blowpipe cleaning, adjusts the tension and speed of the uncoiler in conjunction with the uncoiler, and coordinates the lifting machine's movement. The blowpipe can perform graded cleaning according to the contamination level. This device eliminates dust interference with detection, ensures stable roll diameter measurement data, and achieves automatic cleaning of the laser rangefinder sensor, constant tension closed-loop control of the uncoiler, and coordinated operation of the equipment.

The invention relates to a pneumatic driving type fixed-point moving device and a working method thereof. The pneumatic driving type fixed-point moving device comprises a frame, a limiting switch, a guide sliding pipe, a sliding direction switcher, a left driver, a fixed-point shifter and a right driver. The limiting switches are arranged on the left side and the right side of the frame top beam, the two ends of the guide sliding pipe are fixedly connected through the supporting stand columns, the sliding direction switcher is arranged in the guide sliding pipe, the two ends of the sliding direction switcher are elastically connected with the supporting stand columns respectively, and the stroke direction of the fixed-point moving device is switched through the limiting switches on the left side and the right side. The left driver, the fixed-point shifter and the right driver are all sleeved on the guide sliding pipe, the top of the left driver and the top of the right driver are respectively connected with a reverse thrust pipe, the top of the fixed-point shifter is connected with a blowing pipe, the blowing pipe is arranged in the reverse thrust pipe, a spring is sleeved on the reverse thrust pipe, one end of the spring is connected with the reverse thrust pipe, and the other end of the spring is connected with the blowing pipe. The fixed-point moving device has the functions of emergency braking and accurate positioning, has the advancing function of autonomous back-and-forth travel, and is high in intelligent degree.

The utility model provides a device for preventing a blast furnace tuyere blowpipe from sinking. The device for preventing the blast furnace tuyere blowpipe from sinking comprises a tuyere large sleeve, a tuyere medium sleeve, a tuyere small sleeve, a supporting boss, a mounting plate and a moving assembly, the tuyere medium sleeve is arranged at the rear end of the tuyere large sleeve, the tuyere small sleeve is arranged at the rear end of the tuyere medium sleeve, the supporting boss is arranged in the tuyere small sleeve, and the mounting plate is arranged in the tuyere small sleeve. The outer diameter of the supporting boss is matched with the inner diameter of the small tuyere sleeve, and the inner diameter of the supporting boss is matched with the outer diameter of a tuyere blowpipe. According to the device for preventing the blast furnace tuyere blowpipe from sinking, the tuyere blowpipe is not easy to sink when the blast furnace is in damping down due to the arrangement of each structure, so that the maintenance and repair period of workers on the blast furnace is prolonged, and the cost of the workers is reduced.

The invention relates to the technical field of conveyors, and discloses an air cushion conveyor which comprises a conveying cavity shell, a conveyor belt base and a floating air conveyor belt, and is characterized in that a sweeping mechanism for sweeping the interior is arranged in the conveying cavity shell, and a first fixing mechanism fixedly installed is arranged on one side of the interior of the conveying cavity shell; a second fixing mechanism fixedly installed is arranged on the other side of the interior of the conveying cavity shell, an arranged floating air conveying belt continues to blow upwards through an inserting groove opening, meanwhile, a lifting plate moves to the position above a lower sealing groove, a connecting pipeline channel is opened through a control valve, then a first rotating rod is driven to rotate through a connector, and the first rotating rod is driven to rotate; when a first rotating rod rotates, a moving block can be driven to move, and when the moving block moves, an arranged first gear can roll above a first toothed bar, so that an arranged rotating brush rotates to sweep and scrape impurities in the blowpipe into a connecting pipeline and finally convey the impurities into a conveying cavity shell.

The present invention provides a device for reducing dust accumulation in a wire feeder, which belongs to the technical field of cigarette manufacturing. The device for reducing dust accumulation in a wire feeder comprises a dust collecting device, a partition baffle device, a positive pressure blowpipe, a horizontal push opening and closing valve and a funnel, wherein the partition baffle device is installed directly below the water level spiral auger of the wire feeder, the funnel is connected below the partition baffle device, the dust collecting device connects the funnel and a centralized dust removal pipe of the wire feeder, the positive pressure blowpipe is installed on the side wall panel of the wire feeder away from the return wire inlet, the air outlet of the positive pressure blowpipe is aligned with the surrounding of the rotating dragon cover of the wire feeder and the protective door of the wire feeder, and is used to blow fallen dust into the funnel, the horizontal push opening and closing valve is installed at the front end of the branch pipe of the centralized dust removal pipe, and the horizontal push opening and closing valve is used to adjust the suction wind force of the centralized dust removal pipe. The invention solves the problem of dust accumulation in the wire feeder and affecting the quality of tobacco.

The utility model belongs to the technical field of dust removal, and particularly relates to an ultra-clean filter cartridge dust removal device which is erected on a stand column and comprises a first shell, a second shell and a filter cartridge, the second shell is positioned below the first shell; a plurality of filter cartridges are arranged in the second shell, and differential pressure sensors are arranged on the filter cartridges; the tops of the filter cartridges are jointly connected with a blowing pipe, and the blowing pipe is connected with a compressed air storage tank; a pulse valve is arranged on a connecting pipeline of the compressed air storage tank and the blowing pipe; the third shell is located below the second shell, a dust-containing air inlet is formed in the side face of the third shell, and an airflow distribution device is arranged in the third shell; the fourth shell is located below the third shell, and an ash discharging valve is arranged at the bottom of the fourth shell. The utility model solves the problems of blockage, high energy consumption, frequent maintenance and the like in the traditional dust removal technology, and has a better market application prospect.

1. Name of the designed product: Glass lamp worker's blowpipe (small furnace maker MS1500). 2. Use of the designed product: Heating glass when making glass craft products. 3. Design points of the designed product: In shape. 4. Picture or photograph best indicating the design points: Perspective view.

The utility model discloses a purging device and a rolling mill thereof, the purging device comprises a telescopic assembly capable of axially telescoping and a blowpipe assembly, the blowpipe assembly is arranged at one end of the telescopic assembly, and the other end of the telescopic assembly is rotatably arranged in the rolling mill. According to the blowing device, the pipe blowing assembly can be close to or far away from a pipe fitting through stretching and retracting of the telescopic assembly and running fit between the telescopic assembly and the rolling mill, then the pipe blowing assembly is made to go deep into the fin machining initial position of the rolling mill, and the problem that in the prior art, fin segments cannot be completely covered and blown is solved; the rolling machine can be flexibly adjusted to be retracted and released, production adjustment is not affected, and in production, the rolling machine rolls the blowing device while conducting surface blowing on the rolled part of the pipe fitting and removing residual cutting fluid, so that residual stains on the surface are reduced, the residual cutting fluid is removed from the whole section of the pipe fitting, dry spots and accumulated dirt on the outer surface of the pipe fitting are eliminated, and the service life of the pipe fitting is prolonged. And the surface quality of the pipe fitting is ensured.

The utility model relates to the technical field of camellia oil extraction, in particular to an efficient shelling device for camellia oil extraction, which comprises a shelling device main body, a box body is arranged on the shelling device main body, a feeding hopper is arranged above one end of the box body, a crushing mechanism and a crushing knife rest which are matched with each other are arranged below the feeding hopper, and the other end of the crushing knife rest is arranged below the box body. A conveying belt is installed in the box body, a winnowing blowpipe fastened to the box body in an inserted connection mode is arranged on the side face between the conveying belt and the crushing knife rest, a screening plate is further arranged above the conveying belt, an infiltration groove is formed in the conveying belt, and spraying pipes are symmetrically arranged between the conveying belt and the screening plate and above the infiltration groove; a friction rolling brush is further installed between the conveying belt and the screening plate. According to the efficient hulling device for camellia oil extraction, efficient hulling treatment of camellia seeds is conducted through the steps of crushing, winnowing, screening, infiltration, friction and the like in sequence, the hulling effect of the camellia seeds is improved in an infiltration mode, the subsequent drying step is omitted, and the camellia oil extraction efficiency is effectively improved.

1. Name of the product in this design: Electric blowpipe sterilization box. 2. Purpose of this design: To disinfect electric blowpipes. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The utility model discloses a baking varnish box for metal zipper processing, which comprises a box body, the inner side of the box body is provided with a grid roller capable of feeding in a rolling manner, the grid roller transversely penetrates through the box body, the left side of the box body is fixedly provided with a feeding box sleeved at the left end of the grid roller, and the right side of the box body is fixedly provided with a discharging box sleeved at the right end of the grid roller. Electric heating pipes are mounted on the upper side and the lower side of the grid roller in the box body, and blowpipes for uniformly blowing air to the grid roller are mounted on the opposite sides of the electric heating pipes on the upper side and the lower side in the box body. The grid roller continuously rolls to turn over and feed the zippers, at the moment, the zippers in the grid roller are baked through an electric heating pipe, and meanwhile, air is blown into the grid roller through an air blowing pipe, so that the baking and drying efficiency of a paint film is improved; and the draught fan is matched with the air suction pipe and the air suction cover to suck away hot air in the grid roller and send the hot air back into the box body again, and therefore the hot air baking effect is improved while heat cyclic utilization is achieved.

This item is a tuyere for sending air and reducing gas into a blast furnace, and is a replacement part that is used by connecting it to the blowpipe and reducing gas branch pipe as shown in the "reference cross-sectional view of the installed state."

The invention relates to the technical field of compressed air energy storage power stations, and discloses a compressed air energy storage power station pressure stabilization method blowpipe coefficient calculation method, which comprises the following steps: obtaining the volume flow and density of air under a blowpipe working condition, and obtaining the air pressure and air temperature of the blowpipe working condition; according to the volume flow and density of air under the pipe blowing working condition, the pipe blowing working condition air pressure and the pipe blowing working condition air temperature, the pipe blowing working condition air flow is calculated; and the rated working condition air flow of the compressor is obtained, and the pipe blowing working condition air flow, the pipe blowing working condition air pressure and the pipe blowing working condition air temperature are combined to calculate the pressure stabilization method pipe blowing coefficient. According to the method, the characteristics of the large compressed air energy storage power station are combined, the calculation method for calculating the point air momentum under the pipe blowing working condition is designed, the calculation formula of the pipe blowing coefficient is designed, and the blank of the calculation method for the pipe blowing coefficient of the compressed air energy storage power station is filled; and a scientific basis is provided for parameter control in the pipe blowing process of a large compressed air energy storage power station.

The utility model relates to a device for quickly processing hanging materials and coke floating in the initial stage of use of a large-scale dry quenching furnace on line, which comprises an air cannon, a blowing pipeline and a gas storage tank, a blowing pipe of the air cannon is connected with the blowing pipeline, the blowing pipeline is communicated with a cooling chamber area in the dry quenching furnace and the bottom area of a chute area, and the gas storage tank is connected with the blowing pipeline. The purging pipeline is obliquely arranged downwards along the inner wall of the dry quenching furnace, the included angle between the purging pipeline in the cooling chamber area and the vertical direction of the dry quenching furnace is 30-45 degrees, and the included angle between the purging pipeline in the bottom area of the chute area and the chute of the dry quenching furnace is 15-20 degrees; and the gas storage tank is connected with the air cannon. The method has the advantages of solving the problem of material hanging at the initial stage of large-scale dry quenching production, shortening the standard production time, rapidly reaching the standard production and improving the production efficiency. An air cannon is used for forming a paroxysmal air source, the air source with large local pressure intensity directly acts on a coke sticking and hanging part, so that the hanging part is loosened, and the coke falls off under the combined action of friction force generated by descending of the coke.

This utility model relates to a pneumatically driven fixed-point moving device, including a frame, limit switches, a guide tube, a sliding direction switch, a left driver, a fixed-point shifter, and a right driver. The limit switches are installed on the left and right sides of the frame's top beam. The two ends of the guide tube are fixedly connected to supporting columns. The sliding direction switch is installed inside the guide tube, and its two ends are elastically connected to the supporting columns. The travel direction of the fixed-point moving device is switched via the limit switches on the left and right sides. The left driver, fixed-point shifter, and right driver are all mounted on the guide tube. A reverse thrust tube is connected to the top of both the left and right drivers. A blowpipe is connected to the top of the fixed-point shifter, and the blowpipe is placed inside the reverse thrust tube. A spring is fitted onto the reverse thrust tube, with one end connected to the reverse thrust tube and the other end connected to the blowpipe. This fixed-point moving device has emergency braking and precise positioning functions, as well as autonomous reciprocating travel capabilities, exhibiting a high degree of intelligence.

The utility model relates to the field of transducers, in particular to a built-in direct blowing type air-cooled ultrasonic transducer. The energy converter comprises a machine shell, blowpipes, a connecting disc and an energy converter body, the energy converter body is installed at an opening in the front end of the machine shell, the connecting disc is installed at an opening in the rear end of the machine shell, the connecting disc is connected with more than two blowpipes, elbows are arranged at the front ends of the blowpipes, and air outlets of the elbows face the energy converter body. The two blowpipes are symmetrically distributed on the two sides of the transducer body and connected with the fan. According to the utility model, by using the blowpipe with the elbow, wind power is concentrated to directly blow the energy converter, so that the cooling efficiency of the energy converter is improved. And the blowpipe is quickly disassembled and assembled through the connecting disc.

The utility model discloses a combined dust removal and denitration device, which relates to the technical field of flue gas dust removal and comprises a support, the inner side wall of the support is fixedly connected with a bag type dust remover and a denitration furnace body, the inner side wall of the bag type dust remover is fixedly connected with uniformly distributed filter bags, a ventilation cavity is arranged in the bag type dust remover, and the denitration furnace body is arranged in the ventilation cavity. The side wall of the bracket is fixedly connected with a climbing frame, the surface of the climbing frame is fixedly connected with a compressed air tank, the outlet end of the compressed air tank is fixedly communicated with blowing pipes which are uniformly distributed, the outlet ends of the blowing pipes extend to the inlet ends of filter bags of the bag type dust collector, and the surfaces of the blowing pipes are fixedly connected with electromagnetic valves; according to the combined type dedusting and denitration device, dedusting and denitration technologies are effectively combined to form the combined type dedusting and denitration device, so that the overall efficiency of flue gas treatment can be remarkably improved, particulate matters and nitrogen oxides in flue gas can be removed at the same time, energy consumption and operation cost can be reduced, and increasingly strict environmental protection laws and regulations can be better met.

The utility model discloses a compressed air energy storage power station blowpipe closed type water circulation cooling device which comprises a blowpipe body, the bottom face of the blowpipe body is fixedly connected with a base, the upper surface of the blowpipe body is fixedly communicated with an exhaust port, the inner wall of the exhaust port is fixedly connected with a temperature sensor, and the temperature sensor is fixedly connected with the base. A cooling groove is formed in the inner wall of the blowpipe body. According to the device, through the synergistic effect of the cooling pipe and the heat exchanger, gas heat in the blowpipe body can be rapidly taken away, deformation and damage of the blowpipe and related equipment caused by high temperature are effectively avoided, the service life of the equipment is greatly prolonged, and meanwhile, by means of linkage of the temperature sensor and the controller, the service life is prolonged. The rotating speed of the circulating pump can be dynamically adjusted according to the gas temperature monitored in real time, accurate control over the circulating flow of the cooling liquid is achieved, flow is increased to strengthen cooling at the high temperature, flow is reduced to save energy when the temperature is close to the safe temperature, and energy waste caused by continuous high-flow operation of the cooling liquid is effectively avoided.

The invention discloses an air blocking valve with a double-limiting structure, a modularized air nozzle and a using method, and relates to the technical field of respiratory training equipment.The air blocking valve comprises a valve body shell, a valve element capable of axially moving and a bottom sealing cover, the valve element comprises an air leakage rod part, a fixing rod part and a valve head, and the bottom sealing cover is provided with a center guide hole; the first limiting structure is used for guiding the fixed rod part and limiting the opening stroke of the valve element; the air blocking valve is installed in a blowing pipe internally provided with an integrated limiting rib, a pressing cap with the outer diameter larger than that of a through hole of the limiting rib is installed on the extending air leakage rod part, a second limiting structure for preventing the air blocking valve from being integrally disengaged is formed, and the use method of multi-person hygiene sharing is further achieved through a detachable oral cavity connecting piece. The first limiting structure and the second limiting structure are arranged to form a double limiting and guiding structure, and the durability and operation reliability of the modular air tap can be effectively improved.