302 results about "Gas passing" patented technology

The utility model discloses a kind of gas pressure reducer, and the pressure reducer main body includes shell body, air inlet unit is arranged below shell body, gas cavity in shell body, the end of shell body away from air inlet unit is provided with first gas outlet and second gas outlet;Adjusting assembly is arranged in the pressure reducer main body;Second gas outlet is opened and closed by adjusting assembly;Gas is entered into gas cavity by air inlet unit, and is discharged by first gas outlet to form first air passage;Gas is entered into gas cavity by air inlet unit, and second gas outlet is opened by operating adjusting assembly, gas is discharged by second gas outlet and first gas outlet simultaneously to form second air passage;First air passage is in normal open state, the utility model structure design is reasonable, by being provided with first air passage and second air passage, so that user can select different air passage in different use environment, first air passage is in normal open state, so that gas will be continuously discharged from first air passage without interruption.

The utility model relates to the technical field of wind shield processing, and disclose a kind of injection mold for wind shield processing, including base and fixed plate, model cavity is set up in base, the middle part of base is provided with through slot, the bottom end of fixed plate is provided with mould core, the top of fixed plate is provided with injection assembly, the inside of mould core is fixedly connected with several exhaust pipes, the middle part of mould core is provided with cavity, injection assembly includes four injection channels fixedly connected in the middle part of fixed plate, the top of four injection channels is fixedly connected with feeding pipe, the inner cavity middle part of feeding pipe is provided with conical flow guide block, injection material is injected into model cavity inner cavity from multiple positions by four injection channels simultaneously, effectively improve injection speed, ensure that material can be more evenly distributed in model cavity inner cavity simultaneously, gas generated in high temperature during mould use is discharged through multiple evenly arranged exhaust pipes, avoid that gas influences the product quality of wind shield.

The utility model belongs to flowmeter technical field, concretely is a kind of spin into vortex flowmeter, including flowmeter body, the one end of flowmeter body is detachably installed with connecting pipe, and vibrating mechanism is installed on connecting pipe. The utility model utilizes the flow guide block to the gas that enters flowmeter body and carries out flow guide, and the flow direction of gas is filtered plate bottom by the flow guide of flow guide block, utilizes the impurity contained in gas and is filtered by filter plate, and the impact of gas drives the compression deformation of two spring leaves in connecting pipe simultaneously, to make filter plate present oblique shape and filter gas, dust impurities can fall into collecting box, collect dust impurities, prevent dust impurities in gas and enter flowmeter body with fluid and cause damage to it, prolong the service life of flowmeter body.

The present invention provides an oxide film removal apparatus that can uniformly remove the oxide film from a wafer in the circumferential direction and suppress the consumption of etching gas. [Solution] An oxide film removal apparatus comprising an etching chamber, a table on which a wafer having an oxide film on its lower surface is placed, a gas supply unit that supplies etching gas toward the ceiling of the etching chamber, and a gas discharge unit, wherein the etching gas is brought into contact with the oxide film to remove it, the apparatus comprising a rectifier plate that partitions the space between the ceiling and the table in the vertical direction, the rectifier plate having a group of openings through which the etching gas passes, the group of openings consisting of a plurality of openings arranged in a two-dimensional periodic arrangement pattern so as to overlap with the wafer, the rectifier plate having an opening group forming region where the group of openings is formed, and a peripheral region provided around the entire circumference outside the opening group forming region to block the downward flow of the etching gas, wherein the oxide film removal apparatus comprises an etching chamber, a table on which a wafer having an oxide film on its lower surface is placed, a gas supply unit that supplies etching gas toward the ceiling of the etching chamber, and a gas discharge unit, wherein the oxide film removal apparatus comprises an etching plate that partitions the space between the ceiling and the table in the vertical direction, the group of openings consists of a plurality of openings arranged in a two-dimensional periodic arrangement pattern so as to overlap with the wafer, and the rectifier plate has an opening group forming region where the group of openings is formed, and a peripheral region provided around the entire circumference outside the opening group forming region to block the downward flow of the etching gas.

An oxygen isolation device for preventing combustible rock and soil from spontaneously combusting, and a use method. At least two gas delivery hoses are provided on the upper surface of a combustible rock and soil accumulation body, the gas delivery hoses are spaced apart by a certain distance, and a plurality of through grooves are provided on the outer surface of each gas delivery hose, with the through grooves being distributed in the axial direction of the gas delivery hose. By means of providing the gas delivery hoses, a gas treatment device and a gas detection box, an inert gas enters the interior of the combustible rock and soil via the gas delivery hoses, and at the same time, the gas treatment device extracts gas from the interior of the combustible rock and soil, such that the inert gas quickly enters the interior of the combustible rock and soil, and the air is quickly expelled by the inert gas from the interior of the combustible rock and soil, thereby isolating the combustible rock and soil from the air and preventing the combustible rock and soil from spontaneously combusting.

The utility model relates to concrete raw material moistureproof storage technical field, concretely disclose a kind of moistureproof storage device for concrete raw material, including cabin, the outer surface of cabin is square design.This moistureproof storage device for concrete raw material, when temperature humidity sensor detects that humidity in cabin rises, air circulating fan will air in cabin be sucked into the inside of air intake exhaust pipe, when temperature humidity is higher, first solenoid valve opens, gas enters through air intake exhaust pipe on cabin upper end, when temperature humidity is lower, second solenoid valve opens, gas enters through air intake exhaust pipe on cabin lower end, and through filter purifier and dehumidifier, water vapor in air is filtered out, so that humidity in cabin exceeds the value set by temperature humidity sensor, and it will automatically dehumidify, and ensure that the water vapor that rises and falls is quickly removed under different temperatures, ensure the quality of concrete raw material storage and reduce the probability of failure.

A workpiece holding device includes a workpiece support surface and a blow suction unit. The workpiece support surface includes suction holes formed therein. A workpiece placed on the workpiece support surface is adsorbed by the suction holes. The blow suction unit includes an ionizer that ionizes gas (for example, air), a jet outlet that jets the gas toward the workpiece and a suction inlet. The gas blown onto and reflected off the workpiece is suctioned through the suction inlet. While blowing the ionized gas onto the workpiece, the blow suction unit is moved relative to the length direction of the workpiece.

This invention relates to the field of centralized feeding equipment technology, and discloses a centralized feeding device for pultrusion line glue injection, including a feeding hopper. A suction pipe is fixedly connected to the top of the feeding hopper, and a one-way valve is installed on the outer wall of the suction pipe. A connecting cylinder is fixedly connected to the top of the suction pipe, and an exhaust pipe is fixedly connected to the bottom of the connecting cylinder. A two-way valve is installed on the outer wall of the exhaust pipe. A piston rod is slidably connected to the top of the connecting cylinder, and a piston plate is fixedly connected to the bottom of the piston rod. A connecting plate is fixedly connected to the top of the piston rod, and the bottom of the actuating rod is fixedly connected to the output end of a cylinder. By extending and retracting the cylinder, the connecting plate drives the piston rod to slide within the connecting cylinder. The piston plate moves accordingly, and the piston rod drives the piston plate to move upwards. Gas in the feeding hopper enters the connecting cylinder. When moving downwards, the gas is discharged through the exhaust pipe, achieving auxiliary air bubble discharge from the feeding hopper and effectively reducing air bubbles generated during mixing in the feeding hopper.

The invention discloses a threaded nylon explosion-proof pressure-relief waterproof breathable connector which comprises a connector shell, a mounting ring is fixedly connected in the connector shell, the mounting ring is slidably connected with a breathable base, the breathable base is bonded with a breathable film, the breathable base is detachably connected with a gland, the breathable base is sleeved with a pressure spring, and the pressure spring is fixedly connected with the connector shell. The end portion of the ventilation base is detachably connected with an end face elastic buckle, the two ends of the compression spring are fixedly connected with the end face elastic buckle and the installation ring respectively, and the connector shell is provided with an extrusion structure. According to the invention, dual channels of normal micro ventilation of the breathable film and mechanical pressure relief driven by the spring are integrated. Under normal pressure difference, gas is exchanged through the gas-permeable membrane to keep pressure balance and prevent water and dust; when the internal pressure rises suddenly, the air pressure can push the ventilation base to compress the spring, so that the spring is separated from the O-shaped sealing ring, a larger pressure relief channel is opened up instantly, the explosion-proof response is sensitive, and the safety guarantee is more comprehensive.

A carbon dioxide recovery system includes: an adsorber configured to adsorb and desorb carbon dioxide; a supply channel through which supply gas passes; a storage section configured to store carbon dioxide desorbed from the adsorber; and a gas supply section supplying carbon dioxide stored in the storage section to the adsorber. The carbon dioxide recovery system is operated in an adsorption mode, a desorption mode or in a desorption preparation mode. In the adsorption mode, the adsorber adsorbs CO2 contained in the supply gas supplied through the supply channel. In the desorption mode, the adsorber desorbs the adsorbed CO2, and the storage section stores CO2 desorbed from the adsorber. In the desorption preparation mode, the gas supply section supplies CO2 stored in the storage section to the adsorber during a time from an end of the adsorption mode to a start of the desorption mode.

A multi-row coaxial blow-fusion system (1) is provided comprising a support (2) including one or more first conduits (20) configured to carry polymer fluid parallel to the supply direction (2a) and at least one second conduit (21) configured to carry air or gas, a housing (3) removably attached to the support (2) and including a plurality of acceleration conduits (30) extending parallel to the supply direction (2a) comprising the pipe (10) in fluid-pass connection with one or more first conduits (20) and configured to distribute the polymer fluid, first orifices (31) extending parallel to the supply direction (2a), centered and spaced with respect to the acceleration conduits (30) along the supply direction (2a) and configured to accommodate each part of a respective pipe (10),second orifices (32) extending parallel to the supply direction (2a) and capable of allowing the passage of air or gas, and a slit (33) extending transversely to the supply direction (2a) between the acceleration conduits (30) and the first orifices (31) in fluid passage connection with the second orifices (32), wherein the support (2) comprises a housing (22) configured to contain the box (3) and the slit (33) extends in the box (3) from side to side to be in fluid passage connection with the second conduit (21) and configured to carry air or gas from the second conduit (21) to the second orifices (32).

The utility model discloses an aeration device for sewage treatment mainly includes air inlet pipe and aeration head, and the aeration head is communicated with the air inlet pipe through the communicating column, and the air inlet pipe is rotatably provided with the anti -blocking mechanism that rotates and brushes the aeration head in, the anti -blocking mechanism includes turbine, universal joint, rotary disc and brush head, the gas in the air inlet pipe enters the aeration head and carries out aeration operation through the communicating column, and the gas flows in the air inlet pipe and drives turbine rotation, and the rotation of turbine drives rotary disc rotation through universal joint, and the rotation of rotary disc drives brush head rotation and continues and aeration head contact friction, the utility model solves the problem that aeration hole is easy to block in the aeration operation of sewage treatment, and needs to stop machine maintenance from time to time, can effectively improve aeration efficiency, reduces stop machine maintenance and aeration head replacement.

The utility model belongs to valve spare technical field relates to a kind of gas taking valve assembly with support.The utility model, including valve body main part, its characterized in that, the valve body main part has air inlet and air outlet, connecting channel is equipped between the air inlet and air outlet.The utility model in the gas taking process, gas passes through air inlet and enters connecting channel, pressure acts on the pressure slide bar in integrated elastic pressure structure, the pressure slide bar passes pressure to the pressure sensor in the monitoring piece directly opposite, pressure sensor converts pressure signal into electric signal and passes to micro MCU, micro MCU carries out analysis processing to signal, realizes the real-time monitoring to gas taking stage pressure, when pressure data appears exception, such as exceed the normal range of pre-set, micro MCU can judge that gas taking process exists fault, timely trigger alarm and other self-diagnosis function, remind user to take corresponding measure, avoid safety accident to occur.

The application relates to the technical field of handheld coffee machines, in particular to a handheld coffee machine which comprises a cup body and an extraction assembly, the cup body is provided with a main control board, a power supply and a charging assembly, and the main control board is electrically connected with the power supply and the charging assembly respectively, so that the main control board and the charging assembly are separately arranged, if the charging assembly is damaged, the charging assembly can be directly replaced without affecting the main control board. The extraction assembly comprises a capsule seat, the capsule seat is provided with a sealing ring I, the sealing ring I is arranged on the outer side of a placing groove, the inner side of the sealing ring I is provided with an annular flange, at least one notch is formed in the side close to the capsule, so that when the capsule needs to be taken out, the setting of the notch can reduce the contact area between the flange and the sealing ring I, thereby facilitating the separation of the flange and the sealing ring I, meanwhile, the setting of the notch can provide a channel for gas flow, so that the gas in the capsule seat can be communicated with the outside through the notch, thereby facilitating the taking out of the capsule.

Compressor, with an electric disc motor with the following features: a rotor (10) comprising a moving element (105) comprising a paddle wheel; a stator (20) arranged with respect to the rotor (10) such that a motor gap (30) is formed between the rotor (10) and the stator (20), wherein the electric disc motor is configured to convey a gas through the impeller from a source region (90) to a target region (100), wherein a target pressure in the target region (100) is higher than a source pressure in the source region (90), wherein the electric disc motor has a pressure reducer (140) for reducing a pressure acting on the rotor (10) due to the different pressures in the source region (90) and in the target region (100), wherein the pressure reducer (140) is designed such that a pressure in the motor gap (30) is less than the target pressure and greater than or equal to the source pressure, wherein the pressure reducer (140) has a first flow resistance (140a) between the target area (100) and the motor gap (30) and a second flow resistance (140b) between the motor gap (30) and the source area (90), wherein the first flow resistance (140a) is greater than the second flow resistance (140b), and wherein the second flow resistance (140b) of the pressure reducer (140) has a bore (200) in the moving element (105) to provide a passage for the gas from the motor gap (30) to the source area (90) through the rotor (10).

The application discloses a biofilter and relates to the technical field of sewage treatment, which comprises a filter body, an aeration pipe is fixedly installed at the bottom end of the filter body, a support frame is arranged around the aeration pipe, the support frame comprises vertical rods and horizontal rods which are fixedly connected with each other, the vertical rods are fixedly connected with the filter body, the top end of the horizontal rods is provided with a same biofilter membrane, a liquid outlet cabin is arranged on one side of the filter body, slag prevention pieces are rotatably connected to the two sides of the vertical rods, the slag prevention pieces comprise slag blocking shells and mounting plates which are fixedly connected with each other, gas flows out through the gas passing holes of the slag blocking shells, the slag blocking shells have a certain blocking effect on solid particles in waste gas, a pretreatment cabin and a prefiltering screen for pretreating waste gas are arranged on one side of the filter body, and the waste gas is treated for multiple times, so that the technical problem that solid particles in waste gas easily cause the biofilter membrane to be blocked and affect the filtering effect of the biofilter membrane on waste gas is solved.

The utility model discloses a kind of for high temperature, high humidity, purification device of dust-containing waste gas, including shell, shell is provided with air passage group, air passage group includes air inlet, exhaust passage and backblowing air passage, air inlet, exhaust passage and backblowing air passage are sequentially arranged from bottom to top in shell;Exhaust passage and backblowing air passage between are provided with circulating fan, circulating fan is arranged in shell outside;Air passage group at least one side is provided with one group or multiple groups of purification assembly, dust-containing waste gas enters purification assembly purification by the air inlet and is discharged by exhaust passage, exhaust passage discharged gas is circulated into backblowing air passage by circulating fan and is backblown to the dust removal of purification assembly;High-temperature clean gas after purification is backblown to purification assembly, the water vapor in dust-containing waste gas that remains in purification assembly cannot be condensed into water droplet, avoid filter bag to be wetted and adhere dust to cause air permeability to reduce, to extend filter bag replacement cycle, the overall purification efficiency of purification device improves, operation maintenance cost reduces.

The utility model relates to metal processing technical field, and disclose a kind of clamping structure for bending machine production, including bending machine main body, the outer wall of bending machine main body is fixedly installed with bottom plate, the outer wall of bottom plate is equipped with organism, bottom plate outer wall is fixedly assembled with installation box, through the cooperation of double-end screw rod, connecting rod one, carousel, connecting rod two, the synchronous reverse movement of slide bar one and slide bar two is realized, while check valve is reversed in the movement of slide bar one and slide bar two, so that its check valve is compressed, realizes its gas transmission to gasbag in trachea, so that its clamp will form the gas buffer layer of thickness before contacting plate, make the contact surface pressure of gasbag and plate even distribution eliminate the surface scratch caused by the rigidity of existing equipment clamping, while gasbag pressure can be under the movement of clamp, realize the adaptation of different rustproof steel, aluminium alloy, copper plate and different yield strength material, to enhance the applicability of equipment.

The present application provides an electrostatic chuck device, a pressure calculation method and a recording medium, the electrostatic chuck device adsorbs an object by electrostatic force, and has: an adsorption plate having an adsorption surface for adsorbing the object; a gas supply pipeline for supplying a heat-conducting gas to a gap between the adsorption surface and a surface to be adsorbed of the object; and a pressure calculation unit for calculating the pressure of the heat-conducting gas in the gap; a flow resistance element is arranged in the gas supply pipeline, and the flow resistance element becomes the resistance when the heat-conducting gas flows; and the pressure calculation unit calculates the pressure of the heat-conducting gas in the gap based on the pressure on one side of the flow resistance element, the flow of the heat-conducting gas passing through the flow resistance element, and the flow characteristic of the flow resistance element.

The application provides an explosion-proof box and an inverter. The explosion-proof box comprises a box body having a bottom plate, a first side plate and a second side plate; a box cover having a first edge and a second edge; a plurality of first adapters and a plurality of second adapters connected between the box body and the box cover; a first adapter is arranged between the end of the first side plate, the end of the second side plate, the end of the first edge and the end of the second edge; a second adapter is arranged between the middle of the first side plate and the middle of the first edge; and the middle of the second edge forms a reserved part. When the pressure inside the box body increases to a certain degree, the reserved part can be deformed under the action of the pressure, and the part of the second side plate close to the reserved part can also be deformed under the action of the pressure, so that a gas permeable gap is formed between the reserved part and the second side plate, the gas inside the box body is allowed to be discharged outside the box body through the gas permeable gap, the whole box cover is prevented from flying out of the box body, the safety performance is improved, and the explosion-proof effect is achieved.

The present application relates to the field of organic synthesis, in particular to a synthesis method of fatty acid diester compounds. The method is carried out in a device, which comprises a shell-and-tube reactor provided with a tube pass for gas passing and a shell pass for liquid passing; the tube pass and the shell pass are communicated through openings on the tube wall, and the openings are limited for gas phase raw materials to pass; the method comprises: feeding a solution containing a catalyst and a terminal diene into the tube pass of the reactor, feeding a gas phase containing CO into the tube pass of the reactor, and part of the CO passes through the openings of the tube wall into the tube pass to react with the solution containing the catalyst and the terminal diene. The present application adopts a specific structure of the reactor to synthesize the fatty acid diester compounds, and has excellent raw material conversion rate, product selectivity and reaction efficiency.

The present application relates to the chemical industry field, disclose a kind of reaction system and reaction method, reaction system includes the reaction kettle, rectifying column, cooler, liquid separator tank and product tank connected in sequence, reaction kettle includes closed kettle body, kettle body has reaction zone, the blocking plate is arranged in the kettle body of upper portion of this reaction zone, the gas hole for gas passing is opened in the blocking plate, product tank is installed with local liquid level display meter, the reaction kettle in the reaction system provided by the present application is closed kettle body, it is favorable to improve the security of reaction, and kettle body is equipped with blocking plate, when reaction raw material sublimes, it is condensed into snowflake when ascending to kettle upper portion region, the raw material condensed after sublimation can be blocked by blocking plate, avoid its plugging kettle top pipeline, simultaneously gas phase can be exported in time by rectifying column, cooler, liquid separator tank and stored in product tank, by real-time acquisition the amount of liquid phase product in product tank, conversion rate can be calculated and obtained.

The application discloses an air screw drill anti-flying one-way valve, which comprises a valve body and a valve core, a plurality of P-shaped structure annular bends are symmetrically arranged on the valve core and sequentially arranged along the axial direction, the direction characteristics of the P-shaped structure annular bends are utilized to control the flow direction of the gas passing through the valve core, unlike the conventional one-way valve, no movement mechanism is arranged, and no complex structure or movement is needed to control the gas, the one-way conduction of the gas can be realized without input energy, the valve is installed between an air screw motor and a drill string, the valve core blocks the upward return of the gas above the air screw motor, a part of the gas can be reserved in the third chamber, therefore, a certain pressure is maintained above the air screw motor, the flying problem of the air screw, i.e., the sudden increase of the air screw volume and the sudden increase of the motor rotating speed caused by the pressure reduction due to the tripping of the air screw, can be effectively avoided.

This invention discloses an internal circulation anti-fogging clean double-glazed window and its manufacturing method, comprising: a first glass window; a connecting mechanism, which includes two sets of connecting components and installation components, each set of connecting components and installation components being disposed on the first glass window; and a fixing and adjusting mechanism, which includes a movable frame, two sets of adjusting components, and four sets of supporting components. The movable frame is disposed on the connecting mechanism. After the movable frame is adjusted to a suitable position by the fixing and adjusting mechanism, the fixing mechanism brings the fixing clips closer together so that the fixing clips are locked onto the movable frame, allowing for quick installation of the double-glazed window. It can also be installed into through holes of different thicknesses according to installation needs, making it practical. By turning on the demister, the gas blown out by the demister is sprayed from the connector head through the connecting pipe. The rotating plate is rotated by the connecting motor and transmission, adjusting the angle of the gas blown out by the demister to ensure uniform defogging, thereby preventing fogging of the double-glazed window and facilitating user observation.

The application discloses a gas premixing combustion nozzle and a combustor, and relates to the technical field of gas turbines. The premixing unit comprises a mounting seat, a feeding assembly arranged on the mounting seat, and an air inlet assembly arranged in the same cavity as the feeding assembly. The air is regulated by the air grid to obtain uniform airflow. The airflow is uniformly integrated with the multiple fuel streams passing through the injection column during the movement of the airflow in the protection shell towards the bluff body. When the premixed gas passes through the bluff body, the peripheral surface of the bluff body and the gas flow rate behind the bluff body are different, so that a backflow area is generated behind the bluff body. At this time, the high-temperature flue gas downstream of the flame is sucked into the upstream area of the flame by the backflow, which provides a continuous high-temperature ignition source for the fresh combustible premixed gas, and avoids the safety hazards caused by the high-temperature air entering the premixing pipeline.

The application discloses a particulate matter sensor and an air treatment device. The particulate matter sensor comprises a shell, a gas flow passage for a to-be-detected gas containing particulate matter is formed in the shell; a gas flow generating piece is in communication with the gas flow passage, the gas flow generating piece can drive the to-be-detected gas to pass through the gas flow passage, and a preset wind speed V of the gas flow generating piece satisfies 0.5 m / s≤V≤3 m / s; and an optical detection assembly is arranged in the shell, the optical detection assembly is used for generating a detection light beam, the detection light beam forms a light detection area at an intersection with the gas flow passage, the light detection area has a preset area S, S satisfies 16 mm 2 ≤S≤100 mm 2 , and the optical detection assembly outputs an electrical signal about a particulate matter concentration value according to the detection light beam scattered by the particulate matter.

The utility model relates to the technical field of lift door protection, and disclose a kind of multiple lift door anti-breaker, applied to multiple lift door body, the outer frame is equipped in multiple lift door body outside;The novel scheme is effectively detected whether the running speed of steel wire rope is normal by setting laser speed sensor body, when steel wire rope is broken, laser speed sensor body is opened by controller control solenoid valve body, at this time, the high-pressure gas in high-pressure gas cylinder is rapidly inflated to air bag assembly by corrugated transmission pipe, air bag assembly after inflation rapidly unfolds and effectively supports multiple lift door body in the process of falling, instantaneous impact absorption, reduce kinetic energy, while the reaction force of air bag assembly is effectively dispersed by several hydraulic dampers body Absorption, reduce the possibility of damage of limiting frame and multiple lift door body on its upper end, since air bag assembly and limiting frame can be quickly disassembled, thereby improving the convenience of overhaul replacement.

The utility model discloses a nitrogen filling device for die -casting machine, including nitrogen filling tank and setting at nitrogen filling tank top's control panel and alarm device, the outside of control panel is equipped with dustproof mechanism, the left side of nitrogen filling tank is provided with inlet pipe and outlet pipe, and the inlet pipe is provided with three, the utility model discloses when using, after the outside gas input pipe and output pipe pass through the elastic cover and connect with inlet pipe and outlet pipe respectively, and through the sealing of fixed frame inner chamber after closing the movable door, so that when the connection loosens and causes gas leakage, make the gas through the air inlet hole and send into the fixed cylinder inner chamber, and push the air -tight plug body and overcome the resistance of second spring and move upward, when the plug body electric connection piece and fixed electric connection piece are connected and can start the alarm automatically, thereby send the alarm and remind the staff, and then improve the security of device use.

The utility model relates to fire engineering technical field, concretely is a kind of emergency drainage device for fire-fighting equipment, including base, one floating plate is respectively installed in the both sides of base by pivot, the side of floating plate is equipped with mounting groove, the inside installation of mounting groove has air bag, the top of base is fixed with waterproof control box, one inflation telescopic pipe is respectively communicated in the both sides of waterproof control box, one end of inflation telescopic pipe extends into mounting groove inside and is connected with air bag inside.The utility model can drive two floating plates to deflect by the extension of two first cylinder output ends, so that the air bag installed in the side of floating plate is contacted with water surface, then the inflator installed in waterproof control box inside fills gas into the inside of air bag by inflation telescopic pipe, so that air bag volume expands, so that two air bags produce buoyancy and make the whole device float on water surface, avoid device to be submerged by accumulated water and appear fault when using, improve pumping efficiency.

The present disclosure provides a body drying machine, which comprises a cover component, a blower and at least one air outlet module; the cover component comprises an air inlet and an air outlet; and the cover component is provided with an opening; the air outlet module comprises at least two air outlet structures arranged in a vertical direction; wherein the air outlet module is arranged in the cover component; the gas entering the cover component through the air inlet can enter the air outlet structure, and the gas discharged through the air outlet structure is discharged to the outside of the body drying machine through the air outlet; and the blower is supported in the opening by a support.