905results about "Ventilation arrangement" patented technology

The invention provides a smart home door and window control system, which is applied to the technical field of doors and windows, and realizes the combination of hardware and software of smart doors and windows through the integration of a door and window hardware structure and a control software structure. A signal acquisition module is arranged to be connected with an internal control end and an external port of the system to obtain user command information, door and window state information and external environment information; various standard data information is fused through the data processing module; and the data decision-making module executes weighted operation to generate control information, so that intelligent control on door and window hardware is realized. Therefore, the intelligent household door and window control system realizes the control function of intelligent electric door and window products and other whole-house intelligent household appliances, and has the advantages of unified communication protocol, realization of multi-source data fusion, improvement of control decision intelligence, enhancement of system security and privacy protection.

The invention relates to the technical field of assembly type machine rooms, in particular to an assembly type machine room based on a ventilation and heat dissipation processing mechanism. The computer room comprises a computer room body, ventilation windows are formed in the two sides of the computer room body, an exhaust fan is arranged at the top of the computer room body, and a rainproof assembly is arranged on one side of each ventilation window. As the sponge mat has an adsorption effect on liquid, rainwater can be prevented from entering the machine room body to cause damp damage to equipment, the service life of the equipment is prolonged, as the through holes are formed in the surface of the sponge mat, the ventilation window does not need to be closed, and external air enters the machine room body through the ventilation window after passing through the through holes; heat in the machine room is taken away in the air circulation process, and the heat dissipation effect of the machine room is improved.

The artificial intelligent fireproof smoke exhaust window comprises a ventilation window body, a window sash is arranged on the right side of the ventilation window body, fireproof sound insulation glass is installed in the window sash, the bottom end of the window sash is hinged to the bottom end of the right side of the ventilation window body, and a driving assembly is arranged between the window sash and the ventilation window body; a smoke exhaust assembly used for exhausting smoke outwards is arranged between the upper end of the ventilation window and the window sash. The driving assembly and the smoke exhaust assembly are arranged between the ventilation window and the window sash, the smoke alarm, the temperature sensor and the equipment box are arranged on the right side of the ventilation window, the equipment box can receive signals transmitted by the smoke alarm and control the electric telescopic rod to be started, and the electric telescopic rod drives the window sash to be opened; and meanwhile, in the opening process of the window sash, a T-shaped groove, a T-shaped block and a guide block can drive a movable plate to be overturned and opened, so that a fan corresponds to an exhaust channel, the fan exhausts smoke, the smoke exhaust effect is improved, and safety accidents are avoided.

The invention relates to the technical field of metro platform screen doors, in particular to a novel particulate matter-preventing energy-saving metro platform screen door with an adjustable tuyere, which comprises a metro platform, and a plurality of left-side perforated platform screen doors and right-side perforated platform screen doors are fixedly mounted on two sides of the metro platform respectively; a rotating mechanism is movably connected to one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side, an automatic control system is fixedly connected to one side of one shielding door with holes in the left side, and a left tunnel and a right tunnel are correspondingly arranged on one side of each shielding door with holes in the left side and one side of each shielding door with holes in the right side. The automatic control system adjusts the angle of the rotary baffle and closes the holes in the shielding doors on the two sides through a control circuit, on one hand, the filter screen can filter out coarse particles, on the other hand, the shielding doors can block fine particles such as PM2.5, and therefore dispersion of the particles in the tunnel into the platform is reduced, and in summer, due to the fact that the holes of the shielding doors are closed, the shielding doors can not be blocked. The loss of cold air in the platform into the tunnel is reduced, and energy is saved.

The invention belongs to the technical field of curtain wall structures, and discloses a composite curtain wall structure suitable for a zero-carbon building, which comprises an inner side curtain wall and an outer side curtain wall. The inner side curtain wall is arranged on the building body and provided with a ventilation opening, an opening fan is arranged at the ventilation opening and can open or close the ventilation opening, the outer side curtain wall is connected to the inner side curtain wall, a ventilation cavity is formed between the outer side curtain wall and the inner side curtain wall, when the opening fan is opened, the ventilation cavity is communicated with the indoor space through the ventilation opening, and the outer side curtain wall is provided with an air inlet and an air outlet. The air inlet and the air outlet are both configured to be selectively opened or closed, and the ventilation cavity can communicate with the outside through the air inlet and the air outlet. By means of the arrangement, the composite curtain wall structure suitable for the zero-carbon building can flexibly adjust the ventilation mode, and energy consumption and carbon emission of the building can be reduced.

The invention relates to the technical field of ventilation windows, and discloses an electric airtight shielding ventilation window which comprises a shutter assembly, a ventilation assembly, an electric control assembly and an auxiliary maintenance assembly, the shutter assembly is located on the front side of the ventilation assembly, and the electric control assembly and the auxiliary maintenance assembly are located in the ventilation assembly. The auxiliary maintenance assembly is located on the rear side of the electric control assembly. The sealing frame is matched with the window plate, the sealing performance of the device can be effectively improved, and meanwhile the device can have a certain shielding function through the shielding performance of the shielding cellular board; when the outside is in a power-off condition, the storage battery temporarily supplies power to the controller, the electric push rod and the ventilation fan through the charging and discharging module, so that the device can normally work under special conditions; when the device needs to be overhauled, the turning plate is pulled backwards through the pull groove to be turned over, so that the rear window frame is opened, and at the moment, internal parts of the device can be overhauled conveniently.

The utility model particularly relates to an automatic air interchanger for an indoor suite door of a passive building. The automatic air interchanger solves the problem that people having a rest are lack of oxygen or dizzy and lack of strength due to the fact that the concentration of indoor CO2 and PM2.5 cannot be detected in time during night rest of an existing passive building. A lock is arranged on the suite door, an outer ventilation opening is formed in an outer side plate at the top of the door pocket line, an inner ventilation opening located on the inner side of the suite door is formed in a top plate of the door pocket line, an air duct communicated with the outer ventilation opening and the inner ventilation opening is arranged between the outer ventilation opening and the inner ventilation opening, and a power transmission mechanism and a rotary ventilation mechanism are arranged in the door pocket line. Automatic ventilation of the public area and the indoor room is achieved, the CO2 concentration and the PM2.5 concentration in the room are equivalent to those in the public area, the CO2 and PM2.5 concentration detecting instrument installed in the public area can detect the concentration of harmful gas in the closed room in time, the fresh air system is started in time to convey fresh air into the room, the air cleanliness in each independent room is improved, and the indoor environment is protected. And the comfort level of the living environment is further improved.

The invention relates to the technical field of civil air defense building ventilation equipment, in particular to efficient-purification and self-cleaning civil air defense building ventilation opening protective door equipment which comprises a door frame, a door body, a driving unit, a sensing system, a purification device, a self-cleaning execution unit and a control unit. The sensing system comprehensively collects environment and equipment data, and the control unit adopts a weighted fusion algorithm to calculate a comprehensive pollution index and determine a pollution level; the protection and ventilation efficiency coefficients under different door body opening and closing angles are calculated based on fluid analogue simulation; dynamically solving the optimal opening and closing angle of the door body and the optimal operation parameters of the purification device through a multi-objective optimization algorithm; and the self-cleaning effect is intelligently triggered and verified according to the filter screen state and the pollution level. Self-adaptive intelligent regulation and control of the protective door in a complex pollution environment are achieved, the safety protection and ventilation efficiency is effectively balanced, and the purification capacity and the automatic maintenance level are improved.

The invention discloses a heat-preservation and heat-insulation composite window and a ventilation method. The heat-preservation and heat-insulation composite window comprises a window frame; the window frame is provided with a window frame top cavity and a window frame bottom cavity. A glass assembly; the glass assembly comprises electrochromic glass, first glass and second glass which are sequentially assembled in the notch of the window frame at intervals in the first direction; a first cavity is formed between the electrochromic glass and the first glass, and a second cavity is formed between the first glass and the second glass; a top opening and a bottom opening are formed between the electrochromic glass and the first glass; the window frame top cavity is provided with a first opening, and the window frame bottom cavity is provided with a second opening. The first opening, the top opening, the second opening and the bottom opening are communicated in sequence; a fan; the fan is arranged in the bottom cavity of the window frame. According to the scheme, the draught fan is arranged, heat absorbed in the first cavity is discharged out of a room so as to take away heat of the electrochromic glass, meanwhile, the second cavity is arranged to be a sealed cavity, the effects of heat preservation and heat conduction restraining are achieved, and the heat insulation effect is enhanced.

The invention relates to the technical field of building fire protection, in particular to an intelligent smoke exhaust device based on shape memory alloy and a smoke exhaust method.The intelligent smoke exhaust device comprises a window frame installed on a wall and a grating plate embedded into the window frame, and the grating plate is manufactured by laser etching of a shape memory alloy matrix with a preset crack pattern; and a heat reflection coating is arranged on the surface of the grating plate. When no fire occurs, the grating plate is in a sealed state, and no gap exists; when a fire disaster occurs, the indoor temperature rises rapidly, when the temperature rises to 90 DEG C and reaches the deformation temperature of the memory alloy, deformation begins, cracks are opened after the grating plate deforms, the preset cracks are distributed in a radial mode after being opened, a smoke exhaust channel is generated, and indoor smoke dust is exhausted. The method has the technical effects of high response speed and no need of manual reset.

The embodiment of the utility model discloses a drainage structure of a system shutter, which comprises a frame, a drainage device, a drainage device, a drainage device and a drainage device, and the frame is provided with a first opening and a second opening in opposite directions; the louvre blades are vertically arranged in the frame, the top edges and the bottom edges of the louvre blades are connected to the upper side and the lower side of the frame respectively, the louvre blades are parallel, a flow guide cavity is formed between every two adjacent louvre blades, and openings in the two ends of each flow guide cavity are communicated with the first opening and the second opening respectively; the louver blades comprise the first louver blade and the second louver blade, one side edge of the first louver blade faces the first opening, the other side edge of the first louver blade is connected to one face of the second louver blade, one side edge of the second louver blade faces the second opening, and the other side edge of the second louver blade faces the first opening. A water blocking groove with a groove opening facing the first opening is formed between the other side edge of the first louver blade and the other side edge of the second louver blade. According to the utility model, fluid entering from the first opening is smoothly shielded through the water blocking groove, so that the rain-proof and water-proof performance is improved.

The utility model discloses a dangling type anti-explosion-wave valve which comprises an anti-explosion-wave valve body, a wave valve plate is arranged on one side of the anti-explosion-wave valve body, an anti-impact buffering structure is arranged on the periphery, located on one side of the anti-explosion-wave valve body, of the wave valve plate, and a ventilation opening is formed in the side, right opposite to the wave valve plate, of the anti-explosion-wave valve body. A ventilation opening is formed in the air cushion matching cavity, a dustproof net is connected into the ventilation opening, a lock rod is arranged at the position, located on one side of the anti-explosion valve body, of the lower end of the anti-explosion valve plate, and a lock hole is formed in the side, right opposite to the lock rod, of the anti-explosion valve body. And after the wave valve plate is closed, the lock rod can be aligned and automatically inserted into the lock hole, the lock rod entering the lock hole pushes the lock block and is clamped in the lock groove, the lock rod can be fixed, and when the wave valve plate is opened for ventilation, dust in air outside a door can be effectively blocked through the dustproof net.

The invention discloses a building integrated photovoltaics (BIPV) integrated micro-ventilation passive unit type curtain wall system with a sunshade device, which comprises a curtain wall external corner upright post, an external facade glass panel, an indoor protective glass breast board, a curtain wall male upright post, a power generation glass module and a micro-ventilation opening fan module, and the other side of the micro-ventilation opening fan module is connected to a curtain wall female upright post; the outer side of the curtain wall external corner stand column is further connected with a sunshade device. According to the curtain wall system, a standard unit plate can be formed by adopting a V-shaped fold line structure on the basis of a limited building area, multiple functions such as lighting, sun shading, power generation and ventilation are ingeniously integrated in one set of standard unit template, the functions are powerful, the integration degree is high, overall installation and construction are facilitated, and the construction efficiency is improved. The construction difficulty of the multifunctional curtain wall system is reduced, and the product provided by the invention can meet the near-zero energy consumption and the ultrahigh thermotechnical requirements of zero-energy-consumption buildings.

The utility model discloses a dangling anti-explosion valve, and relates to the technical field of civil air defense engineering. The door comprises a door frame, a through groove is formed in the side wall of the door frame, a filtering assembly is arranged in the through groove, a filtering plate in the filtering assembly is arranged in the through groove, an inserting rod is connected to the side wall of a movable frame arranged on the side wall of the filtering plate, and the inserting rod is connected with an inserting hole formed in the inner side wall of the through groove in an inserted mode. A through hole is formed in the side wall of a sliding block fixedly connected to the inner side wall of the movable frame. A dangling valve assembly is arranged on the outer side wall of the door frame. According to the utility model, the filter component is arranged, so that the working steps during disassembly and assembly of the filter plate are effectively simplified, the filter plate is conveniently and quickly disassembled and assembled, the disassembly, assembly, cleaning and replacement of the filter plate are facilitated, and the dangling valve component is arranged, so that the impact force between the dangling loose-leaf door and the door frame is effectively buffered while the automatic opening and closing of the dangling loose-leaf door are facilitated; and the protection effect and the stability are improved.

The utility model relates to an emergency house body and an emergency cabin based on a container. The emergency house body based on the container comprises a box body, a partition assembly, a function room door and a box door assembly, the box body is provided with a cavity, one side of the cavity in the first direction is open, the partition assembly is arranged in the cavity, the partition assembly divides the cavity into an equipment room and a function room in the first direction, and the box door assembly is arranged in the box body. The box body is provided with a cavity, the equipment chamber is adjacent to the open side of the cavity, the box body is provided with an entrance and exit in the function chamber, the function chamber door is arranged on the box body corresponding to the entrance and exit, and the box door assembly is arranged on the open side of the box body to seal the cavity. The emergency house body based on the container is provided with the equipment chamber and the function chamber which are separated, partition with different functions is achieved, comfort of personnel in the function chamber is improved, various needed equipment can be installed, the emergency cabin has multiple functions, and the life requirements of the personnel in multiple aspects are met.

The modular window shutter system is for use with a window frame. The modular window shutter system forms a shutter that mounts adjacent to the window frame. The modular window shutter system includes a pan structure, a barrier structure, and a plurality of fastening structures. The pan structure secures the modular window shutter system to the support surface, which is adjacent to the window frame. The barrier structure attaches to the pan structure. An initial fastening structure selected from the plurality of fastening structures secures the pan structure to the support surface adjacent to the window frame.

The utility model discloses a micro-ventilation structure for a door and window and the door and window. The micro-ventilation structure is arranged on at least two long-strip-shaped holes which are formed in a window sash and are communicated with the inside and the outside. The micro ventilation structure comprises an indoor ventilation hood, an outdoor ventilation hood and a filter element; the indoor vent hood is arranged on the side, close to the indoor space, of the long-strip-shaped hole; the outdoor vent hood is arranged on the side, close to the outdoor space, of the long-strip-shaped hole. And a plurality of filter elements are respectively arranged in the strip-shaped holes. The window sash does not need to be opened, indoor and outdoor communication is achieved through the long-strip-shaped hole penetrating through the window sash, indoor and outdoor micro ventilation is achieved through the indoor ventilation hood and the outdoor ventilation hood, and outdoor air entering a room is filtered through the filter element.

The hidden type aluminum plate curtain wall ultrathin composite vacuum heat preservation ventilation opening system is arranged on the inner side of a curtain wall system and comprises a top beam, a bottom beam, a window keel, a window frame, a composite vacuum heat preservation partition plate and an openable window sash. The window keel is arranged between the top beam and the bottom beam, and the window keel is connected with the curtain wall keel through the connecting rod; the window frame is mounted in the window keel; the composite vacuum heat-preservation partition plate is installed on the bottom edge of the window frame. The openable window sash is arranged between the window mullion and the top edge of the window frame; the composite vacuum heat preservation partition plate and the openable window sash each comprise a vacuum heat insulation plate, a first heat preservation layer arranged on the inner side of the vacuum heat insulation plate and an outer wrapping layer wrapping the vacuum heat insulation plate and the first heat preservation layer. A window is arranged on the curtain wall thermal insulation layer corresponding to the openable window sash; baffles are arranged on the outer side of the curtain wall heat preservation layer and located between the upper and lower windows. The technical problems that an opening device on a traditional curtain wall system destroys the overall attractiveness, the visual effect is poor, the heat preservation performance is weak, and the structure is complex are solved.

The detachable ventilation window convenient to maintain comprises a shutter assembly and a dustproof cotton assembly, the shutter assembly comprises a peripheral frame and a plurality of blades fixed in the peripheral frame in an up-down spaced mode, a steel wire mesh is fixed to the rear side of the peripheral frame, and two oppositely-distributed U-shaped pieces are fixed to the steel wire mesh; the upper side and the lower side of each U-shaped piece are provided with a guide plate and a limiting piece which are fixed to the steel wire net respectively, the blades are in a Z shape in the vertical direction, the upper sides of the blades are provided with blocking strips formed through bending, and the dustproof cotton assembly is inserted into the two U-shaped pieces from top to bottom and comprises a front pressing plate and a rear pressing plate which are fixed to each other. Ventilation holes are evenly distributed in the front pressing plate and the rear pressing plate, and dustproof cotton is arranged between the front pressing plate and the rear pressing plate. The ventilation device has the advantages of being simple in structure, low in cost, convenient to maintain, good in ventilation effect and high in practicability.

The invention relates to the technical field of excavator door plates, in particular to a combined multilayer protective door plate assembly which comprises a door plate body, a reinforcing plate is arranged on one face of the door plate body, a plurality of reinforcing supporting blocks are arranged in the door plate body, and the interior of the door plate body is divided into a plurality of filling channels by the reinforcing supporting blocks. A bearing channel is further formed in one side of the door plate body; and the buffering and repairing assembly is arranged in the filling channel and the bearing channel. Compared with the prior art, the buffer repairing assembly is arranged, the strain capacity and the continuous use capacity of the door plate under the complex working condition are improved, the service life is prolonged, the maintenance cost is reduced, and the door plate is suitable for keeping good protection performance and maintainability under the high-strength use scene.

The invention discloses an adjustable seasonal self-adaptive energy-saving window based on a flexible phase change material, the adjustable seasonal self-adaptive energy-saving window is provided with a double-layer glass window body, a roller shutter system, an electrostatic dust collection module and an air filtering system, the roller shutter system comprises a roller shutter rotating shaft and a roller shutter, the roller shutter comprises a flexible PCM base material, and a reflecting layer and a heat absorption layer which are respectively formed on two sides of the flexible PCM base material; switching between winter and summer modes is realized by driving the roller shutter rotating shaft; in winter, the heat absorption layer faces outdoors, absorbs solar energy, stores the solar energy in the PCM, heats air in the cavity and then guides the air into a room. In summer, the reflecting layer faces outdoors and reflects solar radiation, residual heat is absorbed through PCM, heat is discharged in combination with air circulation, and the indoor temperature is lowered; the electrostatic dust collection module and the air filtering system synchronously purify air in the heat management process, and the indoor air quality is ensured. The problems of winter and summer performance contradiction and high energy consumption of a traditional window can be solved, and the effects of heat insulation in summer and fresh air temperature increase in winter are achieved.

The utility model relates to the technical field of door and window mechanisms, in particular to an environment-friendly aluminum alloy door and window mechanism which comprises a door and window, and a blocking device is fixedly connected to the upper end of one side of the door and window. The blocking device comprises a mounting shell, two ends of the mounting shell are provided with filter screens with a lampblack filtering function, one end of the mounting shell is fixedly connected with a driving motor, one end of a main shaft of the driving motor penetrates through one side of the mounting shell and is fixedly connected with a connecting rod, and the outer side of the connecting rod is fixedly connected with an extrusion block; the upper end of the guide block is fixedly connected with an extrusion spring, one side of the guide block is fixedly connected with a guide rod, one end of the guide rod is fixedly connected with a piston, the inner side of the mounting shell is fixedly connected with a mounting plate, the upper end of the mounting plate is provided with an empty bin, and the inner side of the mounting plate is provided with a pipeline. Therefore, the service life of the door and window is prolonged.

A fresh air valve (10) comprising: an elongate housing (11) having a transverse air flow channel (12), a movable cover (13) to open or close the air flow channel (12), and a cover handling mechanism (14) at each end part (10a,b) of the housing (11) having: a push member (15) arranged in a first slot (19) and a cover support member (16) arranged in a second slot (18) in the housing (11) and connected to the cover (13), wherein the housing (11) comprises a retainer member (21) having a retainer face (22) operable to engage the cover support member (16) and hold the cover support member (16) in a cover closed position, and the push member (15) is operable to engage the retainer member (21) such as to move the retainer face (22) out of contact with the cover support member (16).

The invention relates to a ventilation and explosion venting device for a closed space, and relates to the field of ventilation devices. The device comprises a frame used for being installed on a closed space shell, an opening is formed in the frame, a cover plate is hinged to the frame, and a control assembly used for controlling opening and closing of the cover plate is arranged on the frame so as to control opening and closing of the opening; a limiting seat is fixedly connected to the cover plate, a clamping seat used for being in clamping fit with the limiting seat is arranged on the frame in a sliding mode, and the control assembly drives the clamping seat to move through a linkage unit. In the state that the cover plate is closed and seals the opening, the control assembly and the linkage unit are matched to drive the clamping base to move so as to drive the clamping base to be matched with the limiting base, and then the locking effect on the cover plate is achieved. Therefore, the sealing effect and the stability of the cover plate in the closed state are improved.

The utility model relates to the technical field of window sashes, in particular to a window sash convenient for bidirectional ventilation, which comprises a rotationally arranged wind wheel body, a shell arranged on the outer side of the wind wheel body and air ports arranged on two sides of the shell, and a driving component used for driving the wind wheel body to rotate is mounted on the inner side of the shell. The driving assembly comprises a shell, a ventilation assembly is arranged in the shell, the ventilation assembly comprises a wind cutting assembly and a wind guide plate, the driving assembly further comprises wind wheel limiting plates, the wind guide plate is detachably connected with the wind wheel limiting plates at the two ends, and the wind cutting assembly is fixedly installed on the inner side of the shell. A smooth flow guide end face is arranged at the end, close to the air opening, of the air cutting assembly. The air cutting plate is installed on the inner side of the shell, the smooth flow guide end face is arranged on the side, close to the air opening, of the air cutting plate, air flow can be guided into the shell smoothly through the smooth surface of the air cutting plate, and the situation that the air flow is turbulent at the inlet of the shell is avoided.

An automatic closing shutter structure, comprising: a door body; a fixed door plate arranged in the door body; a movable door plate arranged in the door body; in a normal state, the fixed door plate and the movable door plate correspond to each other to leave a hollow part for air circulation; an operating mechanism electrically connected with a sensor for detecting smoke concentration, the operating mechanism is connected with the movable door plate, and when the sensor detects that the environmental smoke is higher than a preset value, the movable door plate is driven to move downward to block the hollow part to form a closed space, the movable door plate and the fixed door plate are integrated in the application, in a normal state, the movable door plate is opposite to the fixed door plate, and the left hollow part can be ventilated and radiated, when the sensor detects fire, the movable door plate is driven to move downward by the operating mechanism to block the hollow part, and the fire extinguishing gas is prevented from being discharged, so that multifunction is realized, and the user can only choose one use.

The utility model discloses a guide ventilation cut-off waveguide window for a dangling type explosion-proof wave shielding valve, which belongs to the technical direction of waveguide windows and comprises an inclined ventilation cut-off waveguide window, a static pressure absorption cabin, a horizontal ventilation cut-off waveguide window, a door leaf outer door plate and a door leaf inner door plate. The oblique ventilation cut-off waveguide window is welded to one end of the outer door plate of the door leaf, the oblique ventilation cut-off waveguide window, the static pressure absorption cabin and the horizontal ventilation cut-off waveguide window are used in cooperation, a double-layer combined ventilation waveguide structure is adopted, and a wave absorption material is attached to the static pressure absorption cabin, so that electromagnetic waves are reflected and absorbed for multiple times in the static pressure absorption cabin; electromagnetic wave energy entering the shielding body is greatly weakened, the overall shielding effectiveness is improved, meanwhile, the static pressure absorption cabin can evenly distribute air volume, stabilize airflow, reduce airflow vibration and noise, convert part of dynamic pressure into static pressure, reduce dynamic pressure loss, improve the efficiency of a ventilation system, enable air to be blown farther, and effectively reduce the length of the hexagonal waveguide structure.

The invention relates to the technical field of broken bridge aluminum, in particular to a broken bridge aluminum window which comprises a base, a pressurizing bin is formed in the left portion of the base, a pressure relief bin is formed in the right portion of the base, a partition plate is fixedly connected between the pressurizing bin and the pressure relief bin, a connecting opening is formed in the partition plate, and a plurality of air holes are formed in the front side and the rear side of the pressure relief bin. The front side of each air hole is fixedly connected with a membrane. An air bag is fixedly connected into the pressurizing bin, an exhaust pipe is fixedly connected to the tail end of the air bag, the exhaust pipe is fixedly connected into the connecting opening in a sealed mode, and the air bag is made of rubber. A rotating shaft is rotationally connected into the pressurizing bin, and a shifting piece is fixedly connected to the upper side of the rotating shaft. A pressing plate is fixedly connected to the rear side of the shifting piece, a spring is fixedly connected between the pressing plate and the inner side of the pressurizing bin, and a magnet is glued to the front end of the air bag.