37results about How to "Avoid carrying" patented technology

The invention belongs to the technical field of material preparation, and particularly relates to a high-thermal-conductivity copper-diamond composite material preparation method which comprises the following steps of (1) raw material preparation, (2) SLM equipment preparation and preheating, (3) model printing, (4) heat treatment, (5) finish machining and (6) classified inspection and storage. The screened diamond powder is cleaned and dried through alcohol, workers can conveniently operate and use the diamond powder, manufacturing of the composite material is more accurate, SLM equipment is cleaned through a dust collector, machining operation of the composite material is convenient, the situation that the composite material carries scraps during machining is avoided, and through heat treatment, the machining efficiency is improved. The composite material can be conveniently processed and operated, the mechanical property of the material can be improved, the structure and the organization of the material can be adjusted, the defects of the material can be repaired and improved, workers can conveniently inspect through inspection and storage, and the probability that the composite material has problems during use is smaller.

The utility model provides an acid steaming cleaning device, and relates to the technical field of containers. The bottom of the cylinder body is arranged at the top of the heating chassis; the separation disc is arranged in the cylinder body, a first cavity used for containing a container to be cleaned is formed between the separation disc and the top of the cylinder body, a second cavity used for containing an acid solution is formed between the separation disc and the bottom of the cylinder body, and a plurality of through holes are distributed in the separation disc; the support frame group is arranged at the top of the separation disc and is used for supporting a to-be-cleaned container; the cover body is arranged at the top opening position of the cylinder body; according to the acid steaming cleaning device, acid steam is used for cleaning, the container can be prevented from being secondarily polluted by heavy metal flowing into an acid solution, the acid consumption is reduced, the acid solution on the container can drop back into the second cavity when cleaning is finished, and when the container is taken out, the container can be prevented from carrying the acid solution, and large loss of the acid solution is avoided.

The invention discloses a stereoscopic microscope for producing and processing an orthokeratology lens, and relates to the technical field of microscopes. The device comprises a base, the top of the base is in threaded connection with a vertical rod, the outer surface of the vertical rod is in sliding connection with a focusing bracket, the inner wall of the focusing bracket is fixedly provided with an observation machine head, the outer surface of the vertical rod is fixedly provided with a dustproof assembly, the dustproof assembly is arranged at the bottom of the observation machine head, and the dustproof assembly carries out dust prevention on an objective lens at the bottom of the observation machine head. According to the stereoscopic microscope, dust is prevented from being attached to the surface of an objective lens when the stereoscopic microscope is not used for a long time, a clamping mechanism is arranged at the top of the base and comprises a shoulder screw, glass slide clamps are rotationally connected to the outer surface of the shoulder screw, a light condensation assembly is arranged at the interval of the two glass slide clamps, and a spring of the shoulder screw drives the glass slide clamps to clamp glass slides. The glass slide is placed above the light condensation assembly, and the light condensation assembly improves the brightness of the bottom of the glass slide, so that the observation effect of the stereoscopic microscope is improved.

A filter core structure for oil fume removal equipment of a steam turbine oil system, the filter core structure comprising an outer filter core assembly and an inner filter core assembly; the outer filter core assembly comprising an outer filter core, an outer top cover and an outer bottom cover; the outer top cover covering the top of the outer filter core, the outer top cover having an opening in the middle; the outer bottom cover covering the bottom of the outer filter core; the inner filter core assembly comprising an inner filter core, an inner top cover and an inner bottom cover; the inner top cover covering the top of the inner filter core, the inner top cover having an opening in the middle; the inner bottom cover covering the bottom of the inner filter core; the lower end of the inner filter core assembly being inserted into the outer filter core assembly from the opening in the middle of the outer top cover, the inner top cover being fixed on the outer top cover; a gap being present between the outer surface of the inner filter core and the inner side of the outer filter core; the distance between the inner bottom cover and the outer bottom cover being greater than or equal to half the distance between the outer top cover and the outer bottom cover. The filter core structure can ensure sufficient filtration of oil fume and avoid air carrying oil when the air is discharged from the filter core structure.

The invention relates to the technical field of modeling systems, and discloses a portable cluster three-dimensional rapid modeling system and method, and the system comprises an integrated case unit which is internally integrated with a main computing node and a sub computing node; the power supply and power management module is used for monitoring the load of each computing node in real time and dynamically adjusting power supply; a KVM switching table in the man-machine interaction module is used for supporting a user to switch among a plurality of computing nodes through a keyboard or a mouse; the scheduling and modeling module is used for performing three-dimensional modeling on the target area according to the image data; and the environment adaptation module is used for carrying out real-time monitoring and intelligent regulation and control on the internal environment temperature and humidity of the integrated case unit. According to the method, rapid generation and result export of the three-dimensional model of the target area are realized through a closed-loop process of data acquisition by the unmanned aerial vehicle, cluster node parallel calculation and local aggregation optimization.

The invention relates to the technical field of printing machines, in particular to a screen printing machine with positioning and drying functions, the screen printing machine comprises a base, a sealing cover, a lifting moving mechanism and a fixing seat, and the sealing cover and the lifting moving mechanism are oppositely arranged above the base; compared with an existing screen printing machine, the screen printing machine is provided with the sealing frame, so that the steps of pretreatment, printing, drying and the like can be synchronously carried out, and then the working efficiency is improved. By means of the suction holes, the area, close to the suction holes, of the materials can be prevented from being sunken, and therefore it is guaranteed that ink can be evenly and completely conveyed to the surfaces of the materials; the materials printed with the ink can be dried through the fixing bases on the basis that it is guaranteed that the materials do not make contact with the external environment; and hot air after the ink is dried and waste gas generated when the ink is dried are continuously exhausted.

The utility model discloses an aircraft recovery device and an aircraft, and relates to the technical field of aircrafts. The recycling bin is installed on the foundation, the end, away from the ground, of the recycling bin is of an opening structure, and a plurality of through holes are formed in the side wall of the recycling bin in the circumferential direction; the fixing mechanisms are arranged on the outer side of the recycling bin in the circumferential direction; the multiple locking mechanisms are rotationally connected to the multiple fixing mechanisms corresponding to the locking mechanisms, at least part of the locking mechanisms penetrate through the through holes and are located in the recycling barrel, and when the aircraft is recycled, the part of the locking mechanisms located in the recycling barrel abut against the bottom of the aircraft. And the locking mechanism located outside the recycling bin penetrates through the through hole and abuts against the outer wall of the aircraft so as to lock the aircraft. Therefore, according to the aircraft recovery device, the aircraft is prevented from carrying an undercarriage, the energy consumption of the aircraft is reduced, the flight performance of the aircraft is improved, and meanwhile, the recovery safety of the unmanned aerial vehicle is improved.

This utility model relates to the field of coal chutes, specifically a curved coal chute, comprising a lower arc-shaped pipe and an upper arc-shaped pipe. The upper arc-shaped pipe is positioned at the top of the lower arc-shaped pipe, and a connecting flange is welded to the top of the upper arc-shaped pipe. Both the lower and upper arc-shaped pipes have wear-resistant layers on their outer sides. A first flow collector is welded to one end of the lower arc-shaped pipe. The first and second flow collectors on the inner sides of both the lower and upper arc-shaped pipes prevent coal from falling and carrying a large amount of air within the pipe. Both the lower and upper arc-shaped pipes are curved, which reduces the friction of the coal flow against the pipe wall, eliminating coal blockage and uneven coal distribution. The curved structure causes the coal to fall at a certain angle to the next section, rather than falling close to one side of the pipe wall. When it finally reaches the coal conveying device, the coal is dispersed and can fall evenly into the conveying device.

The invention provides a machine room dust prevention comprehensive treatment method and system and a medium, and relates to the technical field of machine room dust prevention. The method comprises the steps that movement of personnel is monitored through a gravity sensor, and when it is detected that the personnel enter a dust removal channel, a first dust removal device is started for dust removal; the dust sensor is used for monitoring the dust concentration in the environment in real time; and when it is monitored that the dust concentration exceeds the preset dust concentration threshold value, the second dust removal device is started for dust removal. The method, the system and the medium can solve the problems that a current machine room dustproof scheme mainly focuses on removing dust existing in a machine room and neglects the importance of preventing dust from entering, so that the dustproof effect is poor, and the dustproof effect is poor. A traditional dust removal method excessively depends on manual operation, so that the efficiency is low, and the continuous and efficient cleaning effect is difficult to achieve.

The utility model discloses a kind of diamond micro-powder particle multistage classification devices, specifically relates to diamond micro-powder classification technical field, including shell, shell bottom is fixedly connected with support, multiple collecting boxes are slidably connected in support inner side, shell top is fixedly connected with support frame, two fans are installed in shell side, fan output end is fixedly connected with air pipe, shell inner side is provided with classification collection mechanism;Classification collection mechanism includes concentrated frame one, concentrated frame one side is fixedly connected with concentrated frame two, concentrated frame two bottom is fixedly connected with shell inner side.The utility model utilizes multiple dispersion plate to carry out stratification dispersion to airflow, reduce the reunion and local accumulation of diamond micro-powder particle, simultaneously pass through air outlet pipe and filter plate to filter airflow to prevent particle exfiltration, and combine with the rotation friction of grinding ball and grinding seat and the splashing of vibration frame, optimize particle distribution, reduce energy consumption, improve classification accuracy, environmental protection.

The utility model provides a cervix uteri sampler which comprises a supporting rod. A spiked club is fixedly arranged at the top end of the supporting rod, a banister brush is fixedly arranged on the surface of the spiked club, a sleeve sleeves the surface of the spiked club, the sleeve and the spiked club are made of silica gel materials, a first ball head is fixedly arranged at the top end of the sleeve, an opening is formed in the middle of the top end of the first ball head, and a supporting plate is fixedly arranged at the bottom end of the sleeve. A rod sleeve in sliding connection with the supporting rod is fixedly arranged in the middle of the supporting plate, and a push-pull plate is fixedly arranged at the bottom end of the rod sleeve. The sleeve can be guided through the first ball head, the sleeve can be inserted into the cervix uteri, when the cervix uteri of a cervical atrophy patient and a conization postoperative patient is sampled, the sleeve can reach the sampling position, the sleeve can be taken down from the spiked bat through the opening by pulling back the sleeve, and then the spiked bat can be exposed; and the mace can brush cells in a scale column junction area through the banister brush, so that the accuracy of a sampling position is ensured.

The present invention relates to an environmentally friendly pressure-relief powder collection device, comprising a powder processor, the inlet of the powder processor is connected to the outlet of a collection tank, the inlet of the collection tank is connected to the outlet of a feed pipe; an air discharge pipe is provided on the collection tank, one end of the air discharge pipe is connected to the internal cavity of the collection tank, and the other end is connected to an external environment whose air pressure is lower than the air pressure in the collection tank through a filter bag; a windshield material guide component is provided in the collection tank, and the windshield material guide component provides a guide channel for the powder to automatically fall to the outlet at the bottom of the collection tank under the action of gravity. The present invention replaces the existing air shut-off fan, solves the technical problems of high failure rate, powder pollution and low production efficiency, does not use rotating machinery, has high unloading efficiency, low failure rate, high reliability, good environmental performance, and is suitable for application in various powder unloading sites.

The utility model discloses an insulating buckle quick -mounting type lightning arrester relates to the field of lightning arrester, including lightning arrester main part, is equipped with the insulating connecting frame on lightning arrester main part and is fixed, and the insulating connecting frame is by insulating substrate, square inserting rod and cylinder and is composed, and square inserting rod fixed mounting is at the lower extreme of insulating substrate, and the cylinder fixed mounting is at the lower extreme of square inserting rod, and the insulating connecting frame is installed with insulating stop piece, and the insulating stop piece is by L shape insulating board, bottom supporting plate, connecting block, metal elastic buckle, connecting square pole, spring pressure plate and stop spring and is composed, through setting up insulating connecting frame, insulating stop piece, need not use bolt and spanner and the like tool, only need when installing, square inserting rod on insulating connecting frame is inserted into the installation square hole of insulating support, and under the action of limiting spring, make metal elastic buckle card in cylinder, at this moment, have completed the lightning arrester main part fixed mounting on insulating support, greatly simplified operation step, saved installation time.

The utility model discloses a peanut strip spreads harvester, belongs to agricultural machinery technical field. Its solved the low degree of mechanization problem of peanut in harvesting among the prior art. Its main include frame, the frame includes front crossbeam, and the front end of front crossbeam is installed with the traction frame, and the top rotation of front crossbeam is installed with the transverse main drive shaft of setting, and is installed with the main drive wheel on the main drive shaft, and the both sides of main drive shaft are installed with the driving bevel gear respectively, and the both sides of front crossbeam are installed with the vertical setting side drive shaft respectively, and the top of side drive shaft is installed with the passive bevel gear with the driving bevel gear cooperation, and the bottom of side drive shaft is installed with the driving sprocket, and the both sides driving sprocket are connected with the first chain and the second chain of installing on the frame respectively, and the first chain and the second chain are set up with the first clamping section and the second clamping section of mutual adhesion respectively, first clamping section and second clamping section are all relatively and are set up to the inclination of setting upwards to front crossbeam.

The utility model discloses an F-shaped wrench suitable for a pipeline valve. A slideway is arranged on the side wall of the first handle; one end of the second handle extends into the first handle and moves along the slide way; the locking assembly is configured to fix the second handle to the first handle; the hanging lug is arranged on the side, away from the second handle, of the first handle. The first clamping opening, the second clamping opening and the third clamping opening are evenly formed in the circumferential direction of the first handle and located on the side, away from the second handle, of the first handle. A plurality of trapezoidal teeth are arranged on the inner sides of the first clamping opening, the second clamping opening and the third clamping opening; the caliber of the first clamping opening is larger than that of the second clamping opening, and the caliber of the second clamping opening is larger than that of the third clamping opening. Therefore, the F-shaped wrench of the pipeline valve is better in adaptability and high in grabbing force, the carrying amount of operators is reduced, the working efficiency is improved, and manpower is saved.

The utility model relates to sewage sampling technical field especially sewage operation and maintenance automatic sampling device. Its technical scheme includes: sewage pipeline, the middle end of sewage pipeline is provided with sampling filter box, the bottom surface of sampling filter box is provided with sampling pipe, the outer ring of sampling pipe is provided with sampling box, the right side of sampling box is provided with cylinder push rod no.

The utility model relates to the technical field of circuit transformer devices, in particular to an outdoor insulation current transformer which comprises an outdoor insulation current transformer body, a protection assembly is externally connected to the front end of a tank type current transformer body, and the protection assembly is connected with the external connection. When the outside is connected with a protection assembly, a wiring end is arranged in a wiring area to be connected with the protection assembly, after connection is completed, an adjusting threaded column is rotated to be meshed with an adjusting plate to move downwards, the adjusting plate pushes a push rod downwards, and the protection assembly is connected with the protection assembly. The anti-magnetic wire fixing seat at the bottom of the push rod carries out anti-magnetic protection on the exposed head section of the lower wire segment, the overload display window displays the magnitude of external current, and when the magnitude of the connected current is overloaded, the protection assembly transmits an overload signal to the overload protector through the connecting wire, so that the circuit of the overload protector is disconnected, and the saturation phenomenon of the mutual inductor is avoided.

The utility model relates to the field of building construction, and discloses a mountain photovoltaic cast-in-place pile rapid pouring module which comprises a connecting pipe, a mounting pipe is slidably connected to the interior of the connecting pipe, a fixing ring is fixedly connected to the bottom end of the mounting pipe, and two buckle mechanisms are fixedly connected to the interior of the fixing ring. The outer portion of the installation pipe is fixedly connected with an installation ring, the outer portion of the installation pipe is fixedly connected with a pulling ring, the outer portion of the installation pipe is fixedly connected with a limiting block, and the outer portion of the installation pipe is fixedly connected with a plurality of positioning mechanisms. According to the pouring device, the buckle mechanism clamps the mounting ring, the bottom end of the mounting ring is attached to the output end of the buckle mechanism, the pouring head can be replaced according to actual requirements, the construction process is more flexible, the pouring device can adapt to different construction environments and requirements, and meanwhile carrying of various different pouring devices is avoided.

The invention provides a method for preparing chloroester from γ-butyrolactone and its application, and relates to the technical field of organic synthesis, comprising the following steps: (a) acylation reaction of γ-butyrolactone and methyl acetate mixed solution in the presence of sodium methoxide to obtain acetobutyrolactone sodium salt; (b) chlorine is passed through and acetobutyrolactone sodium salt is added to water for chlorination reaction to obtain chloroester. The invention solves the technical problems of cumbersome acetobutyrolactone process, high yield loss, large raw material consumption, and high energy consumption caused by distillation and rectification in the prior art, and achieves the technical effects of directly synthesizing chloroester from acetobutyrolactone sodium salt, shortening the synthesis steps, reducing chlorine consumption, saving raw materials and avoiding yield loss.

The utility model discloses dispatch service equipment, which is applied to the field of terminal processing and comprises a dispatch service equipment main body and a wireless network module, the wireless network module is integrated inside the dispatch service equipment main body; a display screen and a password keyboard are arranged on the surface of the dispatch service equipment main body, and the password keyboard is correspondingly provided with a peep-proof film part; the peep-proof film part is detachably connected to the position corresponding to the password keyboard. According to the utility model, the wireless network module is integrated in the dispatch service equipment main body, so that a wireless router can be prevented from being carried when a user goes out, the application convenience of the dispatch service equipment is improved, and meanwhile, the peep-proof film component is detachably connected to the corresponding position of the password keyboard, so that the peep-proof film component can be prevented from being damaged when the user goes out.

The hidden inner wall cleaning device provided by the disclosure is arranged in a cavity formed by an inner wall of a device to be cleaned, and comprises two mounting plates coaxially arranged with the cavity, a rotating driving member, a spacing adjusting member, and a cleaning brush assembly arranged between the two mounting plates. The rotating driving member is supported in the cavity, and the output end thereof is fixedly connected with the first mounting plate, so that the first mounting plate rotates around the axis of the cavity. The spacing adjusting member is installed between the two mounting plates, and is used for adjusting the spacing between the two mounting plates along the axis of the cavity, so as to form a working space of the cleaning brush assembly between the two mounting plates. The cleaning brush assembly comprises a base, a brush barrel, a cleaning brush, a third driving motor, and an angle adjusting member. The base is fixed on the first mounting plate and is connected with the end of the brush barrel close to the axis of the cavity through the angle adjusting member. The third driving motor makes the cleaning brush extend into or out of the brush barrel, and is movably arranged in the brush barrel along with the movement of the cleaning brush. The disclosure does not affect the work of the device to be cleaned, and has a simple structure.

The invention relates to the technical field of segmented collection of isomerous fractions, and discloses a segmented collection system of multi-component isomerous fractions, which comprises a fixing mechanism fixedly connected to the inner wall of a box body and used for controlling the horizontal position of petroleum, and a flow limiting mechanism fixedly connected to the outer wall of the box body and used for uniformly distributing the petroleum. The collecting mechanism is fixedly connected to the inner wall of the box body and is used for collecting petroleum in steam, so that when internal raw materials are accommodated to a certain height, the added raw materials flow to the next layer through a downcomer, the raw materials are uniformly distributed on the surface of a fixed plate, and when the height of liquid rises, a floating plate moves upwards, a flow baffle is opened, and the liquid flows downwards; when the liquid on the fixing plate is less, the liquid stays on the surface of the fixing plate, so that the liquid on the fixing plate and the gas reach a balanced state, and the situation that the liquid cannot flow downwards finally due to the fact that the gas phase rising resistance is sharply increased due to the fact that the liquid layer on the fixing plate is too thick is prevented.

The invention provides a methylamine condenser energy-saving system for producing urea, and belongs to the technical field of chemical equipment, the methylamine condenser energy-saving system for producing urea comprises a condensation tank and a condensation structure, the condensation tank comprises a tank body, an inlet distributor, a tube plate, a partition plate, a first baffle plate and a second baffle plate, the inlet distributor and the tube plate are located at the bottom end and the top end in the tank body respectively, the partition plate, the first baffle plate and the second baffle plate are located in the tank body, the partition plate is fixedly installed in the middle of the tank body, and the first baffle plate and the second baffle plate are located below and above the partition plate respectively. The multiple first baffle plates and the multiple second baffle plates are evenly distributed in the vertical direction, air holes are formed in the partition plate, liquid phase channels are formed between the multiple first baffle plates and the inner wall of the tank body and between the multiple second baffle plates and the inner wall of the tank body and used for baffling liquid, multiple gas phase channels are formed in the multiple first baffle plates, and the heat exchange efficiency is improved.

The charger installation structure comprises a support which is connected with the electric vehicle. The charger body is connected to the supporting part of the support, the charger body is provided with two connectors, one connector is in a normally connected state with a power source of the electric vehicle, and the other connector extends out of the electric vehicle and is used for being connected with an external power source. The charger installation structure is compact and reasonable in structure and convenient to operate, the charger installation structure is simple in structure and small in occupied size and can be connected in an electric vehicle in a suspended mode, the vibration reduction effect is improved through the special structural design of the support, the heat dissipation effect of the charger body during charging is improved through the material of the support and the suspended design, and the service life of the charger body is prolonged. The anti-theft charger is simple in structure and convenient to use, is prevented from being stolen through the tamper-proof connecting piece, can make full use of the space of the electric vehicle, can be carried along with the electric vehicle, can be prevented from being stolen during charging, and has very high practicability.

The utility model provides a backpack type lightning protection detection device, and relates to the technical field of lightning protection detection devices, and the device comprises a box body, a detection assembly, shoulder straps, and a shoulder rest bearing part. The detection assembly is arranged in the box body, the shoulder support bearing part is arranged on the back surface of the box body, the first end of the shoulder strap is arranged on the back surface, and the second end of the shoulder strap is connected with the shoulder support bearing part, so that the second end of the shoulder strap is connected with the back surface through the shoulder support bearing part; the shoulder rest bearing part is used for bearing the box body through the shoulder rest bearing part when an operator carries the box body through the shoulder straps. According to the backpack type lightning protection detection device, the portability when an operator walks and moves with the backpack type lightning protection detection device is improved, the detection efficiency of the operator in the operation process is improved, and the use convenience of the backpack type lightning protection detection device is improved.

The utility model discloses a vortex flooded heat exchanger which comprises a frame body unit, the frame body unit comprises a connecting plate and a heat dissipation back plate matched with the connecting plate, and air inlets are symmetrically formed in the two sides of the connecting plate. The two sets of first bevel gears are driven to rotate, then the second bevel gear is driven to rotate, the second bevel gear drives the two sets of chain wheels to rotate through the rotating shaft, and the chain wheels drive all the chain wheels to rotate through the transmission chain, so that the dustproof plate is controlled to rotate synchronously in the same direction, and when the dustproof plate rotates by 45 degrees, the heat dissipation effect is not affected; and most of dust can be blocked, a large amount of dust is prevented from being carried when passing through the dustproof net, the replacement frequency of the dustproof net is reduced, it is ensured that the heat dissipation performance is not affected, and when too much dust is accumulated on the dustproof net, the mounting blocks are disassembled through the fixing bolts, and the dustproof net is cleaned.

The invention belongs to the technical field of metal processing, and discloses a wind power jacket steel round pipe auxiliary welding device which comprises a metal pipe, mounting bases are symmetrically and fixedly arranged on the upper side and the lower side of the metal pipe, a plurality of guide grooves are fixedly formed in the circumference of the upper surface of each mounting base at equal intervals, and the middles of the guide grooves are slidably sleeved with pressing blocks; the pressing block moves in the horizontal direction. The end, away from the metal pipe, of the pressing handle is pressed downwards, the pressing block drives the multiple reinforcing plates to synchronously move in the direction of the metal pipe, meanwhile, the center lines of the multiple reinforcing plates are kept unchanged, and the reinforcing plates conduct center alignment on the bent and inclined portions of the upper portion, needing to-be-welded gaps, of the metal pipe and the lower portion, needing to-be-welded gaps, of the metal pipe. Therefore, the problems that a metal pipe welded by an existing welding device is still kept in a bent and inclined state, consequently, the metal pipe is prone to being broken off continuously in the later period, water adheres to the surface of the metal pipe, and air holes or cracks are generated at the welding position are solved.

This application discloses a docking station, a hub, and a docking station system. The docking station includes a body and an ejection mechanism. The body includes a housing and a circuit module disposed within the housing. The housing has a receiving cavity with an opening on one side, configured to accommodate a hub inserted through the opening. The circuit module is configured to electrically connect to the hub accommodated in the receiving cavity. The ejection mechanism includes a pusher movably disposed within the housing. The pusher is movable relative to the housing between a first position and a second position. During the movement from the first position to the second position, the pusher can eject at least a portion of the hub through the opening into the receiving cavity, allowing the hub to be detached from the docking station for separate use when needed. This allows users to flexibly select the docking station and / or the hub according to different usage scenarios.

The invention relates to the technical field of ventilation and air conditioning of nuclear power plants, in particular to an air curtain system, a control method and a control device of the air curtain system, and the air curtain system comprises a compressed air connection unit (10), a fan air supply unit (20), a nozzle unit (30) and a control unit (40), and the control unit (40) is used for controlling the compressed air connection unit (10) to provide compressed air for the nozzle unit (30), or controlling the fan air supply unit (20) to supply air to the nozzle unit (30), so that the nozzle unit (30) jets airflow and forms an air curtain. The air curtain system provided by the invention has relatively high use reliability, and can meet the use requirements in special scenes such as nuclear power plant reactor accident conditions and the like.