296 results about "Fire damper" patented technology

The invention relates to the technical field of fireproof valves, and discloses an air conditioner smoke exhaust fireproof valve with a smoke filtering function, which comprises a valve body, a filtering and cleaning assembly is arranged in the valve body, the filtering and cleaning assembly comprises a sliding block, the interior of the sliding block slides in the valve body, the sliding block is connected with the valve body through a bolt, an activated carbon plate is fixed in the sliding block, and the activated carbon plate is connected with the valve body through a bolt. A filter screen is fixed in the sliding block, a motor is fixed to the lower surface of the sliding block, a rotating rod is fixed to the driving end of the motor, a first protruding block is fixed to the outer wall of the rotating rod, and a second protruding block is fixed to the outer wall of the rotating rod; and the discharging assembly is arranged at the bottom end of the valve body. Through cooperation of internal structures of the filtering and cleaning assembly, a filter screen and an activated carbon plate are rapidly and effectively cleaned, meanwhile, a multi-section type cam and a telescopic rod component are designed, different amplitudes or beating strengths are provided, it is ensured that the vibration effect can evenly cover all areas of the filter screen, and local cleaning blind areas of the filter screen are reduced.

The utility model discloses a mechanical pressurized air supply structure for an antechamber of a building, comprising an air inlet pipe, a pressurized air supply fan, an electric regulating valve, a 70°C fire damper, an electric normally closed valve, a pressurized air supply port, a residual pressure sensor, an air supply main pipe and an air supply branch pipe, wherein the air inlet pipe and the pressurized air supply fan are arranged in a special fan room, and the air supply main pipe is laid in a civil engineering air shaft; the air supply branch pipe passes through a partition wall of the civil engineering air shaft and is laid on the top of an upturned beam bottom of an antechamber, the air supply branch pipe is connected with the air supply main pipe, the air inlet pipe is connected with the pressurized air supply fan, the pressurized air supply fan is connected with the air supply main pipe through the electric regulating valve and the 70°C fire damper in sequence, and the air supply branch pipe entering the antechamber of each floor is provided with an electric normally closed valve and a pressurized air supply port. The utility model arranges an upturned beam at the partition wall of the civil construction air shaft so that the top of the pressurized air supply branch pipe is close to the upturned beam and the bottom is almost level with the bottom of the top plate of the front room, and is laid to connect to the front room. The air duct occupies a small net height of the front room, and at the same time, a suspended ceiling decoration is adopted to eliminate the influence of the air supply branch pipe extending into the front room on the visual impact of the front room.

The invention relates to the technical field of building fire fighting, in particular to a smoke exhaust fireproof valve capable of being remotely controlled. The safety valve comprises a valve body module, a sensor and execution module, a controller module, a remote control module, a safety module and a power module. Compared with the prior art that a control instruction is directly sent according to sensor data, so that response is not timely or misoperation is possibly caused, the scheme adopts a controller module to carry out scene judgment according to the sensor data, and the highest priority of a manual control instruction is set; according to the method and the system, a control scene can be identified more accurately based on smoke concentration and a logic judgment rule of a temperature threshold, a manual control instruction is ensured to be executed preferentially in an emergency, opening and closing of blades of the valve body module are controlled flexibly according to smoke and temperature conditions, the response speed and accuracy of the system are effectively improved, and the system reliability is improved. And the possibility of misoperation is reduced, so that the overall performance and safety of the smoke exhaust fireproof valve system are improved.

The invention relates to the technical field of fire fighting, in particular to an intelligent control method and system for a smoke exhaust fireproof valve, and the method comprises the steps of initial state setting, fire signal detection, smoke exhaust fireproof valve control and state monitoring and feedback. Compared with the prior art which only depends on temperature and particulate matter concentration data to carry out fire monitoring and control and has the defects of insufficient monitoring on internal air pressure change of the smoke exhaust fireproof valve and inflexible control response, the scheme is characterized in that an air pressure sensor is additionally arranged in a data acquisition module; an air pressure data processing step based on a sliding window average value method is introduced into the control module in a targeted manner, and the opening and closing degree of the smoke exhaust fireproof valve is adjusted by combining a proportion, integral and differential control algorithm, so that the scheme can monitor the air pressure change in the smoke exhaust fireproof valve in real time, improve the accuracy of fire early warning, and improve the safety of the fire. And opening and closing of the smoke exhaust fireproof valve can be dynamically adjusted according to air pressure changes, and the stability of smoke exhaust efficiency and the sensitivity of control response are ensured.

The utility model relates to the technical field of smoke exhaust fireproof valves, in particular to a smoke exhaust fireproof valve with a filtering mechanism, which comprises a smoke exhaust pipe, a water storage frame fixedly connected with the inner wall of the smoke exhaust pipe, and a filtering plate fixedly connected with the inner wall of the smoke exhaust pipe. The cleaning mechanism comprises a round frame rotationally connected to the inner wall of the filter plate; according to the device, through a water pump, a water storage frame, a round frame and a mounting frame, a nozzle in annular movement sprays water to the surfaces of a filter plate and a scraper, the flushing effect on the filter plate and the scraper is guaranteed, through an abutting block and a blocking pad, the scraper transversely moves in the mounting frame, attached impurities are shaken off in the back-and-forth movement of the scraper, and the cleaning effect of the filter plate and the scraper is guaranteed. Compared with an existing mode that the impurities attached to the scraping plate are prone to being attached to the filter plate again, in the mode, the scraping plate is cleaned in time, the impurities are prevented from being attached to the filter plate again, and the smoke filtering effect of the filtering mechanism is guaranteed.

The utility model discloses a machine tool temperature-sensing automatic fireproof valve which comprises a valve body, a connecting plate is fixedly connected to the valve body, a temperature-sensing opening and closing mechanism is arranged in the valve body, a sealing mechanism is arranged on one side of the temperature-sensing opening and closing mechanism and comprises a fixing frame, an electric push rod is fixedly connected to the end of the fixing frame, and the electric push rod is fixedly connected to the end of the fixing frame. The end of an output shaft of the electric push rod is fixedly connected with a sealing frame, the interior of the sealing frame is fixedly connected with a middle frame, and the surface of one side of the sealing frame is fixedly connected with a first sealing gasket. According to the machine tool temperature-sensing automatic fireproof valve, the electric push rod drives the sealing frame and the middle frame to move, the sealing frame and the middle frame are attached to the valve plate, meanwhile, the heat conduction block transmits heat to the thermal bimetallic strip, the thermal bimetallic strip is heated to deform, and gas in the air cylinder is introduced into the elastic air bag; the elastic air bag is inflated to expand to block the gap, smoke leakage is effectively prevented, and the sealing effect is improved.

The utility model relates to the technical field of fireproof valves, and discloses a blade linkage type fireproof valve. The fireproof valve comprises a shell, blades, a linkage mechanism, a handle and an executing mechanism, the executing mechanism is arranged on the shell, the linkage mechanism comprises a connecting rod and connecting pieces, the connecting pieces are arranged on the connecting rod at equal intervals and connected with the blades respectively, the blades are arranged on the shell through a rotating shaft, and the handle is arranged on the shell. A rotating shaft extends out of the shell and is connected with the handle and the actuating mechanism. According to the fireproof valve, when the handle rotates, the rotating shaft is driven to rotate, the rotating shaft drives the blades to rotate at the same time, the fireproof valve is in an opened or closed state, the opening angles of the blades can be adjusted, and the ventilation quantity can be conveniently adjusted; when the fusing temperature is reached, the executing mechanism enables the multiple blades to rotate together through the rotating shaft, so that the fireproof valve is closed, and smoke and fire are blocked; when the fireproof valve is closed, the edges of the adjacent blades are overlapped and attached to each other, so that gaps between the adjacent blades are reduced, and the air leakage rate is reduced.

The fireproof valve with the electric auxiliary reset function comprises a fireproof valve body, an actuator and an auxiliary controller, the top of the fireproof valve body is connected with a mounting plate, the top of the mounting plate is connected with two sets of hanging rings, the two sides of the fireproof valve body are each provided with an air inlet and outlet connector, and the air inlet and outlet connectors are connected with the actuator. A driving blade and two sets of driven blades are arranged in the air inlet and outlet connector, the driving blade is located in the center of the air inlet and outlet connector, the two sets of driven blades are arranged on the upper side and the lower side of the driving blade correspondingly, and the actuator is connected to one side of the fireproof valve body. The auxiliary controller is connected to the side, away from the fireproof valve body, of the actuator, a pull ring is arranged below the actuator, a pull rope is connected between the actuator and the pull ring, after a fire behavior is over, the fireproof valve can be assisted to reset, the resetting process is safer and simpler, and when no fire behavior exists, the fireproof valve can be reset through the pull rope. And the fire damper is prevented from being closed due to misoperation.

The utility model discloses a flame arrester fire-retardant chip production device which comprises an operation table, the bottom face of the operation table is movably connected with a second extrusion wheel, the center of the top face of the operation table penetrates through a second through groove, the second extrusion wheel is movably connected in the second through groove in a penetrating mode, the top face of the operation table is connected with a top plate in a telescopic mode, and the center of the top face of the top plate penetrates through a first through groove. The top face of the top plate is fixedly connected with two handles in mirror symmetry, the side face of the top plate is movably connected with a limiting piece, the limiting piece is fixed to the top face of the operation table, and the bottom face of the top plate is movably connected with a feeding piece. Adjustment of the distance between the first extrusion wheel and the second extrusion wheel and pressure adjustment of the pressure device can be completed at the same time only by adjusting the distance between the top plate and the operation table.

The application discloses a fire-resisting vacuum pressure breather valve and particularly relates to the technical field of breather valves, which comprises a shell, an exhaust valve plate arranged in the shell, a buffer block arranged above the exhaust valve plate, a piston cavity formed in the buffer block, a damping cavity arranged outside the piston cavity, a piston part arranged in the piston cavity and connected with the exhaust valve plate, a one-way air inlet mechanism arranged at the bottom of the piston cavity, a one-way air outlet mechanism arranged on the side wall of the piston cavity and located below the piston part, a plurality of damping holes arranged in an array on the outside of the damping cavity, and a temperature control shielding mechanism arranged above the damping cavity and used for shielding the damping holes in a stepped manner, so that the movement speed of the piston part and the exhaust valve plate is negatively correlated with temperature. The application can adjust the opening time of the exhaust valve plate according to temperature, and can reduce the influence of mechanical wear or low-temperature icing on the sensitivity of the valve body as much as possible.

The invention relates to the field of containers, and provides a container and a container type generator set. The problem that the safety is still poor due to the fact that the design of a fireproof partition is insufficient can be solved. The container comprises a container body and a fireproof device, an air inlet and an air outlet are formed in the side wall of the container body, the air inlet and the air outlet are located in the two sides of working equipment, and a cooling air duct is formed between the container body and the external environment; the fireproof device is located in the box body and comprises at least two fireproof valves, and temperature sensors are arranged on the fireproof valves; the at least two fireproof valves are respectively positioned on the inner sides of the air inlet and the air outlet; the temperature sensor monitors the temperature in the box body and sends a signal to the fireproof valve when the temperature reaches a preset value, and the fireproof valve closes the cooling air duct.

The application relates to a high-sealing fireproof air brake for a ship, which comprises a frame, a plurality of square blades for closing a ventilation channel in the frame after rotation, and a driving device; hollow edge columns are arranged on two inner side walls of the frame located on both sides of the air flow direction of the ventilation channel; first water through holes are arranged on the two hollow edge columns, and water injection pipes are communicated with the two hollow edge columns; the square blades are hollowly arranged and both ends of the square blades are provided with second water through holes; when the ventilation channel in the frame is closed after the rotation of the square blades, the two square blades located at the most edge are communicated with the corresponding hollow edge columns through the second water through holes of the square blades and the first water through holes of the corresponding hollow edge columns, and the second water through holes of the two adjacent square blades are communicated. The application has the advantages of high sealing.

The utility model relates to the technical field of biomass boilers, in particular to a material locking and backfire preventing device of a biomass boiler, which not only can quantitatively convey biomass into the boiler according to the combustion efficiency of the boiler and improve the use flexibility of the device, but also can avoid backfire through double blocking of locking air and a fire damper. Comprising a biomass boiler which is installed on the ground. The biomass boiler further comprises a quantitative conveying mechanism, an anti-backfire mechanism, a direct conveying mechanism, a driving mechanism and an air supply mechanism, the quantitative conveying mechanism is installed on the biomass boiler and conveys biomass into the anti-backfire mechanism in a quantitative mode, and the anti-backfire mechanism is installed on the quantitative conveying mechanism and avoids backfire; the direct conveying mechanism is installed on the anti-backfire mechanism and conveys biomass into the biomass boiler, the driving mechanism is installed on the direct conveying mechanism and drives the direct conveying mechanism to convey the biomass, and the air supply mechanism is installed on the driving mechanism and accelerates conveying of the biomass to avoid backfire.

1. The name of the design product: fire cover. 2. The use of the design product: used for plant oil stove fuel gasification fire cover. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a fuel oil tank of a container unit, belongs to the technical field of fuel oil tanks of container units, and solves the problem that the use condition of the fuel oil tank cannot be monitored in real time. The fuel oil tank of the container unit comprises a fuel oil tank body, an oil return opening and an oil filling opening are formed in the top of the fuel oil tank body, a fire-retardant breather valve is further arranged at the position, between the oil return opening and the oil filling opening, of the top of the fuel oil tank body, and an overflow opening, an oil outlet and an oil discharging opening are formed in the side face of the fuel oil tank body. The overflow port is located at the top of the side face of the fuel oil tank body, the oil outlet and the oil discharge port are both located at the bottom of the side face of the fuel oil tank body, a dirty oil port is formed in the bottom of the fuel oil tank body, an oil supporting disc is arranged below the fuel oil tank body, and an oil leakage detector is arranged in the oil supporting disc. The fuel oil tank of the container unit is favorable for improving the safety of the fuel oil tank during use.

The utility model discloses a durable fireproof valve structure, which comprises a valve body frame, an electric actuating mechanism, at least two groups of rotating shafts, a blade piece, a connecting seat and a connecting rod, the two ends of the rotating shafts are movably connected in the valve body frame through shaft sleeves, the rotating shafts are uniformly arranged in parallel, one rotating shaft is fixedly connected with the rotating end of the electric actuating mechanism, and the other rotating shaft is fixedly connected with the blade piece. The blade pieces are fixedly connected to the rotating shaft, the blade pieces are matched with one another, the connecting bases are arranged on the back faces of the blade pieces respectively, the connecting rods are movably connected with the connecting bases through the pin shafts respectively, and the surfaces of the valve body frame and the surfaces of the blade pieces are sprayed with indoor expansion type steel structure fireproof paint. The indoor expansion type steel structure fireproof coating is sprayed on the surfaces of the valve body frame and the blade piece, so that the valve body frame and the blade piece can be effectively prevented from deforming in a long-term high-temperature environment, and the sealing performance and the service life of equipment are guaranteed. The utility model has the advantages of simple structure, safety, effectiveness, good use effect and the like.

The present invention discloses an air-conditioning smoke exhaust fire damper with a smoke filtering function, comprising: a limiting ring, arranged in the smoke exhaust pipe; a valve plate, movably arranged in the limiting ring, the valve plate selectively sealed and connected to the limiting ring; a mounting cylinder, detachably connected in the smoke exhaust pipe and located on one side of the limiting ring; at least two filter screens, spaced apart and arranged in the mounting cylinder; a cleaning device, arranged between the two filter screens, the cleaning device utilizes the airflow in the smoke exhaust pipe to generate vibration to clean the filter screen. In order to improve the convenience of installing and removing the filter screen, this is achieved by detachably connecting the mounting cylinder to the smoke exhaust pipe. When the filter screen needs to be cleaned, it can be removed. In order to prevent the filter screen from being blocked, a cleaning device is arranged between two of the filter screens. The cleaning device removes particles on the filter screen by vibration. As long as there is airflow passing through the smoke exhaust pipe, the filter screen can be cleaned to prevent particles from adhering for a long time.

The utility model discloses a smoke exhaust fireproof valve convenient to maintain, which relates to the technical field of fireproof valves and comprises a valve body, a connecting seat is arranged at the top end of the valve body, a valve plate is arranged in the center of the inside of the valve body, a fixing plate is vertically arranged in the middle of the valve plate, and four cross-shaped inserting rods are arranged on the side wall of a valve rod. Cross-shaped inserting grooves matched with the four cross-shaped inserting rods are formed in the positions, corresponding to the four cross-shaped inserting rods, of the fixing plate, and a fixing sleeve is detachably arranged on the front side of the fixing plate. The cross-shaped inserting rod is matched with the cross-shaped inserting groove, rapid inserting installation between the valve plate and the valve rod is achieved, the cross-shaped fixing groove in the fixing sleeve is further matched with the inserting rod in an inserting mode, and when the valve plate needs to be maintained or replaced, only the fixing bolt on the fixing sleeve needs to be screwed out, the fixing sleeve is taken down, and the valve plate can be assembled and disassembled. And the valve plate can be easily detached from the valve rod, the operation is simple and convenient, and the maintenance efficiency is greatly improved.

Provided in the present application are an energy storage system, an electric ship, and a fire-extinguishing method. The energy storage system comprises an enclosure and a fire-extinguishing system, wherein a battery compartment and an electrical compartment which are isolated from each other are provided in the enclosure; the fire-extinguishing system comprises an exhaust fan, a first fire damper and a second fire damper which are mounted on the enclosure; and when the battery compartment is in a first state, the exhaust fan works, the first fire damper and the second fire damper are opened, the first fire damper cooperates with the exhaust fan, and an external gas enters the battery compartment by means of the second fire damper.

The utility model relates to the technical field of smoke exhaust fireproof valves, and particularly discloses a smoke exhaust fireproof valve which is characterized in that mounting plates are arranged at the two ends of a frame respectively, and a containing space is formed in the frame; the executing mechanism is mounted on the outer side of the outer wall of the frame and is opposite to the accommodating space; two ends of the rotating shaft are rotatably connected with the frame, one end is connected with the executing mechanism, and the other end extends into the accommodating space; the valve plate is fixedly connected to the outer side of the outer wall of the rotating shaft and matched with the inner wall face of the frame in shape. The baffle is contracted in the wall face of the frame, so that the smoke exhaust channel is completely unblocked, the smoke exhaust effect is greatly improved, it is ensured that smoke and the like can be smoothly and efficiently exhausted through the smoke exhaust channel in the scene where smoke needs to be exhausted, it is ensured that the valve plate can be tightly closed when the fireproof and smoke-proof requirements are met, smoke and fire spreading is effectively blocked, the high efficiency of smoke exhaust is ensured, and the smoke exhaust effect is improved. And the fireproof and smoke-proof reliability is improved.

The utility model discloses a fire-fighting smoke exhaust fireproof valve convenient to install, and relates to the field of fire safety, the fire-fighting smoke exhaust fireproof valve convenient to install comprises an air deflector, the outer wall of the air deflector is fixedly connected with a plurality of ventilation pipes, the tops of the ventilation pipes are fixedly connected with a fixing frame, and the inner wall of the fixing frame is fixedly connected with a motor; the top of the ventilation pipe is fixedly connected with a fixing plate, the output end of the bottom of the motor is fixedly connected with a rotating shaft, the connecting rod is arranged, when the ventilation pipe is installed, the push rod can be pushed, and when the push rod is pushed, the connecting rod is driven to move; after the connecting rods are pushed to a proper size, the connecting rods are inserted into the connectors for connection, the hinges are buckled after the connecting rods are connected, the inserting rods on the hinges are inserted into the connectors, and finally the screws are screwed into the threaded holes to complete installation, so that the purposes that installation is rapid, time and labor are saved, and the connecting rods can be adjusted to proper positions for installation according to different pipelines are achieved; and the working efficiency during pipeline installation is improved.

The utility model relates to the technical field of fireproof valves, and discloses a manual-automatic integrated electric fireproof valve actuator which comprises a mounting base and a fireproof valve box, fixing grooves are formed in the four corners of the top of the mounting base, the tops of the multiple fixing grooves are slidably connected with inserting plates, the tops of the multiple inserting plates are fixedly connected with a protective shell, and the protective shell is fixedly connected with the fireproof valve box. A plurality of connecting holes are formed in the left side and the right side of the mounting seat, pull rods are slidably connected to the interiors of the connecting holes, and a plurality of limiting plates are fixedly connected to the outer walls of the two pull rods. According to the fireproof valve box, the inserting plate is aligned with the fixing groove to be inserted, the pull rod is released to enable the second spring to drive the tail end of the pull rod to be inserted into the inserting plate, rapid installation of the fireproof valve is completed, and the cooling fins are matched with the heat conduction layer to absorb and dissipate heat of high temperature generated by the fireproof valve box. The clamping columns are jacked into the clamping grooves in the fixing plate by extruding the first springs, and rapid sealing installation of the fireproof valve box is completed.

The utility model discloses a fire resisting shutter controller with a sealing mechanism, which comprises a fire resisting shutter controller body, the fire resisting shutter controller body comprises a first protective shell and a second protective shell, the second protective shell is arranged outside the first protective shell, a spring and a jacking component are arranged between the first protective shell and the second protective shell, and the sealing mechanism is arranged between the first protective shell and the second protective shell. A fireproof component is embedded into the outer surface of the second protection shell, a first blind hole thread is arranged on the second protection shell, the jacking component comprises a fixing part and a telescopic component arranged on the fixing part, the fixing part is a cylindrical rod, a sinking groove is formed in the top of the cylindrical rod, the telescopic component is an insertion rod, and the insertion rod is inserted into the sinking groove. And meanwhile, springs are arranged at the ends of the inserting rods, lapping grooves are formed in the inner side wall of the second protective shell, and inserting fixing rods are further arranged between the first protective shell and the second protective shell. The beneficial effects of the utility model are that the buffer part is arranged between the two sealing mechanisms to improve the fireproof effect of the protective housing.

The utility model provides a full fresh air anti-condensation circulating system for an anti-explosion refrigeration house. Belongs to the technical field of refrigeration engineering. The all fresh air anti-condensation circulation system comprises a PLC (programmable logic controller), a refrigerating device, a fresh air device, an exhaust device, an air supply device, a defrosting air device and a heat exchanger. Wherein the fresh air inlet assembly is sequentially connected with the heat exchanger, the fresh air check valve and a fresh air inlet of the evaporation chamber through a fresh air pipe, and the superheater is located in the fresh air pipe connecting the heat exchanger and the fresh air check valve; an exhaust air outlet of the explosion-proof refrigeration house is sequentially connected with a first exhaust air check valve, an exhaust air fireproof valve, a heat exchanger, an exhaust air fan, a second exhaust air check valve and an exhaust air outlet assembly through an exhaust air pipe, and a subcooler is located in the exhaust air pipe. By means of the full fresh air design, the efficient heat exchange and supercooling technology, intelligent control and the like, the anti-condensation and anti-explosion safety problems in the anti-explosion refrigeration house are solved, and the energy efficiency level and the operation reliability of the system are remarkably improved.

The utility model discloses a fire damper installation positioning and fastening device, which relates to the technical field of fire damper installation, and comprises a fire damper assembly, a connecting block, a positioning assembly, a fastening assembly and a connecting pipeline, the fire damper assembly comprises a fire damper body and a switch valve, the switch valve is installed at the top of the fire damper body in a threaded manner, and the connecting block is connected with the positioning assembly. The positioning assembly is arranged in the connecting block and comprises a positioning column, and the fastening assembly comprises a fastening spring and a fastening steel ball. Under the combined action of the connecting block, the positioning connecting hole, the positioning column and the positioning spring, the positioning column is aligned with the positioning connecting hole, then the fireproof valve body is connected with the connecting groove, the fireproof valve body is slid, and when the positioning connecting hole in the fireproof valve body and the positioning column are located at the same position, the positioning spring pops up the positioning column, so that the fireproof valve body is fixed. The fireproof valve body is connected with the connecting pipeline through the positioning connecting hole, and operation is easy.

This application relates to the field of metallurgical technology and discloses a control method for the fire door of a steelmaking converter. The method includes: the controller receives a door closing signal; the controller times the first motor and the second motor respectively; after reaching the preset time, the first fire door and the second fire door are closed in place, and the first motor and the second motor stop; if the running time of one of the motors reaches the preset time first, then control one of the motors to stop, and the running time of the other motor does not reach the preset time, the controller obtains the excitation current given value and the excitation current feedback of the frequency converter corresponding to the other motor, and controls the other motor to stop according to the excitation current given value and the excitation current feedback. In the case of no closing limit, this application can not only control the fire door to stop automatically and quickly when it is closed in place, but also close tightly, and prevent the frequency converter of the fire door from generating a large current, reducing the impact on the motor and the frequency converter, and reducing the equipment investment cost.

The utility model relates to the technical field of fireproof valves, and provides a novel adjustable fireproof valve which comprises a shell, a connecting shaft is fixedly embedded in the lower end of one side in the shell, a fireproof plate is movably arranged on the outer surface of the connecting shaft in a sleeved mode, the fireproof plate is movably embedded in the shell, and the novel adjustable fireproof valve further comprises two arc-shaped grooves. The two terminals are arranged on opposite surfaces in the shell; the shell is fixedly installed in the channel, the fireproof sensor transmits a fire signal to the electric push rod when receiving the fire signal, the electric push rod pushes the fireproof plate to rotate on the outer surface of the connecting shaft through the connecting block, so that the fireproof plate seals the interior of the shell, the electric push rod can also play a supporting role, and the stability of the fireproof plate is improved; and a rectangular sealing gasket is fixedly installed and attached to the fireproof plate, the tightness of the fireproof plate and the shell is improved, flames or smoke are prevented from entering the channel, limiting blocks are fixedly installed on the two sides of the upper end of the fireproof plate, the limiting blocks are movably embedded in arc-shaped grooves, and the stability of the fireproof plate is improved.

The present application provides a kind of railway rescue station and personnel evacuation and smoke control method of service tunnel.The railway rescue station includes service tunnel, evacuation horizontal passage, protective door, smoke exhaust air duct, fireproof partition sealing device, smoke exhaust fire damper, fan, jet fan, smoke outlet, wind speed and direction sensor and evacuation platform.The present application provides a kind of evacuation and rescue scheme of smoke exhaust air shaft near railway tunnel emergency rescue station, realizes directly using advance guide pit (service tunnel) for geological exploration as smoke exhaust passage, avoids setting smoke exhaust air duct on the top of service tunnel, causes construction risk and engineering investment to increase due to the fact that service tunnel section is too large.In addition, using wind speed and direction sensor and jet fan, prevent smoke from spreading to both ends of rescue station fire tunnel under the condition of ensuring smoke exhaust effect, improve the safety of other trains in super-long tunnel, and reduce the influence range of smoke on tunnel facilities, which is beneficial to rapid recovery after disaster.

The utility model relates to the technical field of smoke exhaust fireproof valves, and discloses a pull rod type reset structure for a smoke exhaust fireproof valve executing mechanism, which comprises a smoke exhaust pipeline, a handle is arranged on the front side of the smoke exhaust pipeline, the rear end of the handle penetrates through the smoke exhaust pipeline and is fixedly connected with a connecting rod, and the tail end of the connecting rod is fixedly connected with a sawtooth strip. The inner wall of the smoke exhaust pipeline is fixedly connected with a support, the bottom of the support is rotationally connected with a gear, the gear is connected with the sawtooth strip in a meshed mode, the bottom of the gear is fixedly connected with a sealing piece, the inner side of the smoke exhaust pipeline is fixedly connected with a fixing disc, and a smoke exhaust hole is formed in the top of the fixing disc. According to the smoke exhaust device, the movement of the sawtooth strip is in meshing transmission with the gear, so that the gear and the sealing piece are driven to rotate, the smoke exhaust hole is opened through the rotation of the sealing piece, the exposure range of the smoke exhaust hole is controlled through the movement of the sawtooth strip, and then the exhaust flow of smoke is controlled.