30 results about "Fire damper" patented technology

The invention relates to a fire damper (1) with a housing (2) for a shut-off damper pivotably mounted therein about a pivot axis and with an installation kit (4) surrounding the housing (2) on the outside, wherein the installation kit (4) comprises at least one plate (5), wherein each plate (5) is designed to form a recess (16) for receiving the housing (2), wherein each plate (5) has two plate surfaces (8) connected to each other by both an outwardly facing circumferential end surface (6) and by a circumferential contact surface (7) forming the recess (16), and wherein each plate (5) can be attached from the outside around the housing (2).To specify a fire damper (1) whose installation kit is easier to manufacture and lighter while ensuring good installation, at least one panel (5), preferably all panels (5), should be made of a material comprising wood and / or a wood-based material, or at least one panel (5), preferably all panels (5), should be made entirely of wood or a wood-based material.

The utility model relates to the technical field of smoke exhaust fire damper controller, especially to a smoke exhaust fire damper controller with quick assembly structure, including shell and bottom plate, the bottom plate fixed connection in the shell one side, the recess is seted up on the bottom plate, install fixed component in the recess, the fixed component includes sucking disc, support, disc, second spring, crossbeam, the crossbeam sliding connection is in the recess, a plurality of second spring all are fixedly connected between crossbeam and recess bottom wall, the recess bottom wall between fixed connection has disc, the utility model in the air bag is tightly adsorbed on the outside box body lateral wall when being stretched inside negative pressure, can make sucking disc, thereby realizes the effect that the bottom plate and shell are fixed, avoids when screwing the screw, the shell and the bottom plate are offset, ensure that the through -hole on the protruding piece is always aligned with the reserved hole on the outside box body lateral wall.

This utility model discloses a self-cleaning flame arrester for preventing ash accumulation in a coke oven gas supply pipeline. It includes a coke oven gas supply pipe and two connecting pipes. An automatic ash-cleaning mechanism is welded and fixed at the joint of the two connecting pipes. The automatic ash-cleaning mechanism is inserted into the connecting pipe, which is fixed to the coke oven gas supply pipe by bolts and nuts. A flame arresting mesh is detachably installed on the front side of the automatic ash-cleaning mechanism. The flame arresting mesh has multiple small holes and is fixed to the automatic ash-cleaning mechanism by screws. An ash-collecting mechanism is located below the front side of the flame arresting mesh and is detachably fixed to the connecting pipe by screws. The automatic ash-cleaning mechanism includes a water storage shell and an ultrasonic vibrating rod. The water storage shell is welded and fixed to the connecting pipe and is filled with water. An ultrasonic vibrating rod inserted into the top of the water storage shell is installed therein. Multiple guide rods inserted into the water storage shell are fixed on the flame arresting mesh. This utility model provides convenient flame arrest, has a simple structure, facilitates ash cleaning, and saves manpower.

The utility model relates to fire damper technical field provides a kind of fire damper power-assisted device, including valve body, still include: first leaf axle, set to the inside upper of valve body, and outside fixed installation has first valve leaf;Second leaf axle, set to the inside lower of valve body, and outside fixed installation has second valve leaf;Adjusting structure, first valve leaf inside valve body can be driven to swing, to open or close first valve leaf;Transmission assembly, when adjusting structure operates, synchronously drive second valve leaf inside valve body swing, to open or close second valve leaf.The utility model, can utilize hydraulic cylinder and adjusting structure cooperation, provide power assistance, to facilitate opening or closing fire damper, while, when adjusting structure operates, cooperate transmission assembly, drive second valve leaf synchronous opening or closing, realize single hydraulic cylinder drive first valve leaf and second valve leaf, reach the effect of double closed fire damper, improve the fire stability and safety of fire damper.

Fire damper assembly (1) with a housing (2) surrounding a flow channel (3), in which a butterfly valve (5) is pivotably mounted such that the butterfly valve (5) can be moved from an opening position releasing the flow channel (3) to a closed position tightly closing the flow channel (3), wherein the fire damper assembly (1) has an actuating device (7) with which the butterfly valve (5) can be moved from the opening position to the closed position, wherein the fire damper assembly (1) has a retaining device (11) with which actuation of the actuating device (7) can be prevented and the butterfly valve (5) can be retained in the opening position during normal operation, wherein the retaining device (11) has a heat-deformable first locking element (19),which deforms in the event of a fire and thereby releases a first actuating release element (15) of the actuating device (7) which is blocked by the undeformed first locking element (19), thereby triggering the actuating of the actuating device (7), and wherein the retaining device (11) has a second locking element (18) that can be actuated by a release signal, which, triggered by the release signal, releases a second actuating release element (16) which is blocked by the second locking element (18), thereby triggering the actuating of the actuating device (7), characterized in that the retaining device (11) is arranged outside the housing (2) surrounding the flow channel (3) and the first locking element (19) is freely accessible at least partially from outside the fire damper device (1).

The utility model belongs to pipeline safety equipment field, specifically is a kind of energy -conserving and environment -protecting natural gas flame -retardant device, including first cylinder and second cylinder and sealing pipe, sealing pipe is provided with assembly ring groove, sealing pipe is assembled with first metal heat conduction plate, sealing pipe is assembled with second metal heat conduction plate, first metal heat conduction plate and second metal heat conduction plate are assembled with assembly disc, assembly disc is provided with assembly groove, first metal heat conduction plate and second metal heat conduction plate are assembled with stable mechanism, and stable mechanism includes support block and movable mouth, movable mouth is arranged in assembly disc, support block is assembled with operating block, operating block is provided with traction cavity, traction cavity is assembled with traction block, traction block is assembled with first stop block, first stop block is assembled with extension block, extension block is assembled with second stop block, the above-mentioned energy -conserving and environment -protecting natural gas flame -retardant device solves the problem that existing fire -resistant core is impacted and is easy to shake in fire damper by the cooperation of first stop block and second stop block, lacks the problem of stability.

The utility model discloses a kind of smoke exhaust fire damper forming welding mechanism, it is related to fire damper welding technical field, including workbench, fixed assembly for being used to limit fire damper frame is positioned on workbench, lifting platform is set to the below of workbench, the bottom surface of workbench is equipped with second electric push rod, and the telescopic end of second electric push rod is installed on lifting platform, two groups of second movement grooves are opened in lifting platform, sliding block is slidably connected in each second movement groove, the top end of sliding block is fixedly connected with linkage shaft. The utility model design structure is reasonable, it is lifted by the aid of second electric push rod to drive lifting platform, cooperate with the same inclination angle design of first movement groove and second movement groove, linkage shaft can drive welding gun to move longitudinally along inclined trajectory in lifting process, so that welding gun can form continuous longitudinal weld along the lap joint of fire damper frame, avoid the condition that weld is broken or incomplete, effectively improve the sealing and strength of welding.

A furnace door fire baffle assembly and a melting furnace, the furnace door fire baffle assembly is hollow inside and open at the back, comprising: a partially open back wall, a detachable bottom wall, a top wall for connecting the bottom of the furnace door, and a limiting plate fixedly installed on the top wall and surrounding a defined encapsulation groove between the top wall and the limiting plate, a bolt I is telescopically adjusted and installed on the limiting plate, the screw rod of the bolt I can extend into a filling space for filling refractory material between the encapsulation groove and the back wall. The limiting plate is in L-shaped structure, and the corresponding part of the top wall forms an open encapsulation groove towards the back wall. The melting furnace fixes the above-mentioned furnace door fire baffle assembly on the bottom of the furnace door as a fire baffle structure. In this way, the melting furnace can conveniently provide a fire baffle structure, and it is convenient to remove the bottom wall according to the need to fill, replace refractory material, and adjust the filled refractory material by using the bolt.

The utility model relates to fire damper technical field, and disclose the fixed pressure block of fire damper blade of firm connection, including valve body, the air rectangular hole of passing through valve body from front to back, still include having the baffle in air rectangular hole, the baffle includes the bending groove one of reinforcing baffle, the upper pivot, lower pivot are inlayed in bending groove one place, and the side away from upper pivot, lower pivot of baffle is equipped with the pressure block, and the side of baffle of pressure block is equipped with the avoiding mouth of avoiding bending groove one, and the side away from baffle of pressure block is equipped with bolt, and bolt can pass through pressure block, baffle and upper pivot or lower pivot connection. Through the cooperation of upper pivot or lower pivot and pressure block, the baffle is clamped, and the firmness of baffle connection is increased, and upper pivot and lower pivot can tightly and firmly connect the baffle, avoid the loosing of connecting point caused by the frequent rotation of baffle, and the baffle is three millimeter thickness plate stamping forming.

The utility model discloses a kind of high sealing smoke exhaust fire damper vane forming machines, it is related to vane forming machine technical field, including roller press, the discharging end of roller press is equipped with blanking plate, fixed seat is fixedly connected on roller press, adjusting box is installed on fixed seat, the bottom surface of blanking plate is abutted on adjusting box, adjusting box is provided with the pusher assembly for pushing vane after cutting, cutting assembly is set on fixed seat, for cutting vane removed from blanking plate, moving groove is opened on fixed seat.The utility model design structure is reasonable, it is effectively supported to vane before cutting knife down pressure by setting movable adjustable support plate structure, avoid the problem that burr or deformation appears on cutting surface due to the elastic deformation of belt conveyor, and support plate and blanking plate are in the same horizontal plane, ensure that both ends of vane are supported when cutting, so as to improve the flatness of cutting surface and dimensional accuracy, significantly improve the qualified rate of product.

The utility model relates to fire dam production technical field, specifically disclose a kind of outer frame folding device of smoke exhaust fire dam, including the support mechanism that the outer frame plate conveyed out by roller press side edge bending is guided and supported, and folding mechanism is provided on support mechanism and is bent to the outer frame plate;Support mechanism includes bottom plate, and support frame is fixed in bottom plate upper end, and support roller is intervally set up on support frame, and support roller front end passes through support frame and is suspendedly set up, and limit stop ring is set up on support roller and located support frame front side, and limit stop ring is provided with two, and folding mechanism includes the pivot and limit shaft set up on support frame. Through the setting of support mechanism and folding mechanism, after the outer frame plate of roller pressing, side edge bending is folded when entering support mechanism and folding mechanism, and the outer frame plate is in the support state of communication with front side and is folded, so that frame can be quickly extracted from support mechanism after folding formation, improve the convenience of frame folding after blanking.

This utility model relates to the field of fire dampers, and more particularly to a fire damper with adjustable airflow. This utility model provides a fire damper with adjustable airflow that can seal the valve body and rotating fan blades around the perimeter during a fire, preventing the spread or leakage of flames and smoke, slowing down heat conduction, reducing fire losses and damage, improving isolation effectiveness, and ensuring safe use. A fire damper with adjustable airflow includes a valve body and rotating fan blades, with rotating fan blades rotatably connected to both the left and right sides of the valve body. This utility model utilizes the cooperation of a worm gear, worm wheel, gear, and rack to ensure the rotating fan blades rotate and return to a tight seal. The rotating fan blades are sealed by magnetic attraction, and a blocking block moves and returns to a tight seal with the rotating fan blades. Therefore, it can seal the valve body and rotating fan blades around the perimeter during a fire, preventing the spread or leakage of flames and smoke, slowing down heat conduction, reducing fire losses and damage, improving isolation effectiveness, and ensuring safe use.

This utility model relates to a smoke extraction device for cable wells, belonging to the technical field of cable wells. It includes a cable well body and a smoke extraction well. The cable well body has multiple fireproof partitions along a vertical direction, each with a fireproof pressure plate above it. Multiple corresponding cable perforations are provided on the fireproof partitions and pressure plates, and fireproof sealant is placed inside the cable perforations. Smoke extraction pipes are installed on the cable well body between adjacent fireproof partitions, and smoke extraction fire dampers are installed on the smoke extraction pipes. This utility model's cable well body is divided by multiple fireproof partitions and pressure plates. Combined with the fireproof sealant inside the cable perforations, the cable well body can be segmented for fire protection. Furthermore, the smoke extraction pipes on the cable well body between adjacent fireproof partitions allow for segmented smoke extraction, preventing the formation of a "chimney effect" and better preventing the rapid spread of fire. The fireproof sealant is conical, and the fireproof pressure plate cooperates with the fireproof partitions to ensure the fireproof sealant adheres tightly to the cables.

The utility model relates to valve technical field discloses a kind of fire damper of convenient installation, including fire damper main body and bottom plate, the bottom plate upper side is fixedly provided with No. Three hydraulic rods, the output end of No. Three hydraulic rods is fixedly provided with support plate, the both ends of support plate are fixedly connected with side plate, two No. One limiting rod is slidably connected in two side plate sides, the outer side of two No. One limiting rod is fixedly connected with one limiting block, the middle of two side plates is fixedly provided with No. One hydraulic rod, the inner side of two No. One hydraulic rod and four No. One limiting rod is fixedly provided with two moving plate. In the utility model, it can be roughly positioned by the device moving on the ground, and the rising structure makes it easier to install at a high place.

This utility model relates to the field of breathing valve technology, and more specifically, to an integrated flame-arresting breathing valve, comprising: a valve body assembly, the valve body assembly including: an outer valve body and an inner valve body connected to the outer valve body; a flame-arresting element connected to the bottom inlet / outlet of the outer valve body, the flame-arresting element being sleeved on the outer wall of the base assembly; one end of the base assembly inserted into the valve body assembly being fixed to the inner wall of the outer valve body and connected to the inner valve body; the inner valve body is provided with an exhalation structure to allow gas in the storage tank to flow unidirectionally to a first chamber formed between the inner wall of the inner valve body, the outer wall of the base assembly, and the inner wall of the outer valve body when the internal pressure of the storage tank increases. In this integrated flame-arresting breathing valve, the flame-arresting element is located at the bottom inlet / outlet of the outer valve body, so that the flame-arresting element is not affected by debris, dust, or rainwater, requiring no protective device. The flame-arresting element has a structure that facilitates disassembly and replacement, making subsequent disassembly and maintenance convenient and saving manpower and resources.

This invention relates to the field of smoke exhaust fire damper technology, specifically to a high airtightness smoke exhaust fire damper. The smoke exhaust fire damper involves a drive system assembled inside the valve body, including connecting rods, multiple drive rods, and multiple preset rotating shafts. Each preset rotating shaft is equipped with a preset sealing blade. By moving the connecting rods up and down, driving torque is synchronously transmitted to the preset rotating shafts based on the drive rods, ensuring edge-covering contact between adjacent sealing blades, between the preset sealing blades and the L-shaped fixed top plate, and between the preset sealing blades and the L-shaped fixed bottom plate. An S-shaped spring is fixedly fastened to the upper and / or lower end of the sealing blade; an electromagnetic suction plate is fixed to the top or bottom side of the reserved slot of the S-shaped spring; a blade sealing spring is fixedly embedded in each reserved slot. Based on the foregoing, it can be ensured that the aforementioned edge-covering contact method is a magnetic contact, thereby ensuring the stability and tightness of the edge-covering contact.

This invention relates to a flame arrester, specifically a long-lasting, fire-resistant flame arrester. The long-lasting, fire-resistant flame arrester is characterized by comprising an upper shell, a middle shell, and a lower shell. The outer edges of the upper shell and the lower shell are connected by a bidirectional threaded rod. The middle shell is disposed between the upper and lower shells, with its upper surface connected to the bottom surface of the upper shell and its bottom surface connected to the upper surface of the lower shell. A sealing valve plate is disposed within the cavity of the upper shell, and a drive motor is disposed on the outside of the upper shell. The drive motor can drive the sealing valve plate to rotate within the cavity of the upper shell, preventing the spread of flames. The middle shell is provided with a heat dissipation coil, with electrically controlled valves located at both the cold source inlet and outlet of the heat dissipation coil. This invention can effectively prevent the further spread of flames and dissipate heat from the flame arrester, providing workers with sufficient time to extinguish the fire.

The invention relates to a method for controlling a fire damper installed in an air duct of an air handling system, preferably in an air duct of an air handling system designed as an exhaust air duct or as a supply air duct of a commercial kitchen, wherein the fire damper comprises a housing (1) having a housing wall and a damper blade (3), preferably made of calcium silicate, which is pivotably mounted about an axis of rotation (2) and is preferably centrally located on the housing cross-section between an open position and a closed position, and which has two opposing damper surfaces connected to each other by a circumferential end face, wherein the axis of rotation (2) divides the damper blade (3) into two damper blade halves and two opposing bearing points forming the axis of rotation (2) are provided for mounting the damper blade (3).wherein the fire damper has an electric motor drive (4) arranged on the outside of the housing (1), connected directly or indirectly to the damper blade (3), with at least either a thermally releaseable fuse (6) and / or a thermoelectrically releaseable release device, and a spring element (22) acting directly or indirectly on the damper blade (3), preferably a spring element (22) designed as a torsion spring, and wherein the drive (4) is connected to an actuating device (7), wherein when a voltage is applied to the drive (4), the damper blade (3) is moved by the drive (4) against the restoring force of the spring element (22) from its closed position into its position, preferably aligned parallel to the flow direction (8),The damper blade (3) is pivoted from its open position and held in the open position. Upon a power interruption, either due to the melting of at least one fuse (6) and / or the triggering of a thermoelectrically triggered release device, or due to the actuation of an actuating device (7), the damper blade (3) is pivoted from its open position to its closed position by the spring element (22). To provide a method that allows a high number of cycles even with a closing time of 1 to 3 seconds, the fire damper should have either a control device (10) and an electric braking device (11) to slow down the closing process, wherein the control device (10) sends a control signal to the braking device (11) upon detection of a power interruption caused by the actuating device (7).so that the damper leaf (3) is actuated by the spring element (22) and the damper leaf (3) is in turn braked by the braking device (11) and pivoted from its open position to its closed position within an extended closing time, or the fire damper has a control device (10) for slowing down the closing process, wherein the control device (10) effects a braking effect upon detection of a voltage interruption caused by the actuating device (7), for example by applying a voltage to the drive (4) to effect a temporary holding of the damper leaf (3) open and reducing this braking effect, preferably continuously, successively, for example by reducing this applied voltage, preferably continuously, successively.so that the damper leaf (3) is actuated by the spring element (22) and the damper leaf (3) is pivoted from its open position to its closed position within an extended closing time - and secondly, either in the event of a power interruption either as a result of the melting of at least one fuse (6) and / or as a result of the triggering of a thermoelectrically triggered release device, the damper leaf (3) is pivoted from its open position to its closed position by the spring element (22) within a normal closing time, or the fire damper has a control device (10) and an electric braking device (11) to slow down the closing process,wherein the control device (10), upon detection of a voltage interruption, either as a result of the melting of at least one fuse (6) and / or as a result of the triggering of a thermoelectrically triggered release device, sends a control signal to the braking device (11), so that the damper leaf (3) is actuated by the spring element (22) and the damper leaf (3) is again braked by the braking device (11) within an extended closing time pivoted from its open position to its closed position, or the fire damper has a control device (10) for slowing down the closing process, wherein the control device (10), upon detection of a voltage interruption, either as a result of the melting of at least one fuse (6) and / or as a result of the triggering of a thermoelectrically triggered release device,For example, by applying a voltage to the actuator (4) to temporarily hold the damper blade (3) open and reducing this braking effect, preferably continuously and successively, so that the damper blade (3) is actuated by the spring element (22) and the damper blade (3) is braked and pivoted from its open position to its closed position within an extended closing time. The invention also relates to a fire damper.

The fireproof valve comprises a pipeline and a fireproof valve body, the fireproof valve body is arranged in the pipeline, an inserting opening is formed in the top of the pipeline, the top end of the fireproof valve body penetrates through the inserting opening and is fixedly connected with a positioning plate, and fixing plates are arranged on the two sides of the positioning plate. The high-temperature fireproof valve comprises a fixing plate, the fixing plate is fixedly connected with a pipeline, clamping plates are slidably inserted into the two ends of the fixing plate correspondingly, an inclined groove is formed in the top of one end of each clamping plate, a connecting plate is fixedly connected between every two adjacent clamping plates, and a plurality of elastic mechanisms are fixedly connected between one side of each connecting plate and the fixing plate. And through the arrangement of the clamping fixing assembly, the effect of dismounting the fireproof valve can be conveniently achieved, when the fireproof valve body is damaged, the fireproof valve body can be rapidly and conveniently taken out of the ventilation pipeline, and therefore great convenience is brought to a user.

The utility model relates to a kind of mobile aviation automatic refueling device in the technology field of transportation, specifically to a kind of mobile aviation automatic refueling device, including the electric carrier for driving refueling device transfer, electric carrier pulls bottom flat car, bottom flat car is equipped with first navigation steam barrel, second navigation steam barrel, gravity refueling coil assembly, explosion-proof assembly and full-automatic refueling arm;The first navigation steam barrel and the second navigation steam barrel top are equipped with oil outlet and exhaust port, and the oil outlet is equipped with barrel pump, and the barrel pump is connected with oil outlet hose, and two oil outlet hoses are connected with gravity refueling coil assembly by first three-way ball valve.The power supply of electric carrier and gravity refueling function interlock, and the power supply of electric carrier running and inverter output safety interlock;Pipeline is equipped with fire damper and pressure relief circuit, and key electrical components are designed with explosion-proof and high protection grade, with high safety factor.User operation is simple and efficient, device dead weight is light, small in size, portable and flexible, economic and low carbon.

The present application relates to a kind of fluorine-lined breathing valve, including the fire damper body with fluoroplastic lining, the fire damper body has access port, suction port, exhalation port, suction flow channel, exhalation flow channel and cleaning port;It also includes access flange, fire damper core, suction flange, suction valve flap guide sleeve, suction valve flap, insect screen, exhalation flange, exhalation valve flap, exhalation valve cover, exhalation valve flap guide sleeve, cyclone resistance mechanism and cleaning end cover;Cyclone resistance mechanism is the structure of buffering type one-way flow, relative fire damper body has the state of following and the state of reverse flow, in the state of following, cyclone resistance mechanism flow end and suction port form gas inlet area, cyclone resistance mechanism reverse flow end and exhalation flow channel form gas outlet area;In the state of reverse flow, cyclone resistance mechanism flow end and suction port form pressure maintaining area, cyclone resistance mechanism reverse flow end and exhalation flow channel form high pressure area.The present application has the advantages of smaller flow resistance and not easy to accumulate corrosive gas, and it is easy to clean.

An assembled circular air pipe wall-passing fireproof valve assembly, comprising a pre-buried component and a wall-passing fireproof valve, the pre-buried component is pre-buried and installed on a fireproof wall, the wall-passing fireproof valve comprises a fireproof valve shell, an annular sealing rib a, an annular sealing rib b, a valve piece, a control unit and an end flange, the annular sealing rib a and the annular sealing rib b are prefabricated on the fireproof valve shell, the annular sealing rib b is limitingly fixed with the pre-buried component, the annular sealing rib a is fixed with the fireproof wall through expansion bolts, and fireproof washers are arranged between fixed surfaces.The assembled installation of the wall-passing fireproof valve is realized, prefabricated production of the pre-buried component and the fireproof valve ensures precision and quality, a double sealing structure effectively improves fireproof performance, cooperation of the expansion bolts and the limiting rib guarantees installation stability, and the wall-passing fireproof valve assembly is suitable for circular air pipe wall-passing scenes of various building ventilation and fire extinguishing systems.

The utility model discloses a sealed fire fighting air valve, include: exhaust duct, and the fireproof cutoff plate of exhaust duct middle part setting, the inside of fireproof cutoff plate is provided with the locating plate, and the outside of locating plate is connected with the mounting plate, still include: the sealing rubber ring, its installation is in the inside of exhaust duct, and the inside of exhaust duct is provided with cleaning assembly, the inside of fireproof cutoff plate is pasted with sealing rubber strip. The sealed fire fighting air valve, has set up the effective sealing cutoff structure in the device, makes the smoke and gas of combustion and not easy along the gap to another side penetration when the device is closed, avoids the influence that the fire prevention use effect of device is affected, sets up a plurality of surface cleaning structure in the device simultaneously, makes the dirt that sticks in the inside board surface of cutoff in the process of inside board retraction and is scraped to the outside drop of cleaning structure, improves the overall accuracy of device, has better use effect.

The utility model relates to the technical field of equipment maintenance, and specifically discloses a high place smoke-proof fire valve opening valve tool for subway, which comprises a handle support, a double-station shifting block, a reset assembly and a pulling rope, wherein the handle support comprises a support end and a handle end, the support end comprises two opposite support plates, and a gap for installing the reset assembly and the double-station shifting block is left between the two support plates; a rotating shaft is arranged in the gap, and the double-station shifting block is rotatably connected to the rotating shaft; the handle end is provided with a pulling channel, one end of the double-station shifting block is provided with a fixing position, one end of the pulling rope is connected to the fixing position, and the other end of the pulling rope is used for being pulled by a hand after passing through the pulling channel; the reset assembly is connected to the double-station shifting block in a matched mode, and the reset assembly is connected to the handle support through an elastic member. The utility model enables an operator to control the action of the double-station shifting block by pulling the pulling rope on the ground when the tool is used, thereby realizing the opening valve and reset operation of the high place smoke-proof fire valve and completely avoiding the climbing operation.

This utility model discloses a waste gas treatment device for a tower crane structural component painting line, specifically relating to the field of painting waste gas treatment technology. It includes a painting waste gas source, an adsorption unit, a desorption unit, and safety devices. The filtration unit includes a pressure transmitter, a fire damper, a temperature sensor, and a pressure-dry filter. The adsorption unit includes an activated carbon adsorption bed, an adsorption fan, and a chimney. The desorption unit includes an activated carbon adsorption bed, a desorption fan, a catalytic combustion device, and a cooling fan. The safety devices include a fire-fighting water supply and a nitrogen generator. This utility model, through a honeycomb activated carbon adsorption and catalytic combustion desorption regeneration process, combined with comprehensive safety devices, can efficiently purify waste gas, save energy and reduce consumption, and ensure operational safety. It has advantages such as strong adaptability and economic practicality, effectively solving the problem of tower crane painting waste gas treatment and achieving compliant emissions.

This utility model belongs to the field of breathing valve technology, and particularly relates to a flame-arresting breathing valve, including a valve body. Multiple guide rods are evenly installed in the circumferential direction of the valve body. An exhalation valve disc assembly is slidably connected in the middle of the multiple guide rods. The lower end of the exhalation valve disc assembly abuts against the valve body. An inhalation valve disc assembly is slidably connected in the middle of the exhalation valve disc assembly. An upper spring seat is installed on the inhalation valve disc assembly. A spring is provided between the exhalation valve disc assembly and the upper spring seat. The multiple guide rods guide the up and down movement of the exhalation valve disc assembly, making the exhalation valve disc assembly more stable when opening or closing, and eliminating concerns about the deformation or bending of the guide rods.

The utility model discloses a smoke exhaust fireproof valve connecting mechanism, which comprises a chimney pipeline and a fireproof valve body, and is characterized in that a first mounting frame is fixedly connected to the chimney pipeline, a second mounting frame is fixedly connected to the fireproof valve body, a plurality of mounting cavities are symmetrically formed in the first mounting frame, and a plurality of second mounting cavities are symmetrically formed in the second mounting frame. When the temperature and the air pressure in the fireproof valve body and the chimney pipeline rise, the thermal expansion liquid made of mercury absorbs heat and expands to drive the sealing sliding plate to move, the sealing sliding plate drives the connecting plate and the anti-disengaging rod to move through the connecting rod, and the anti-disengaging rod moves to abut against the side face, away from the inserting plate, of the movable plate. And the stability of the fireproof valve body installed on the chimney pipeline is further improved, the situation that the fireproof valve body falls off from the chimney pipeline due to the fact that the air pressure in the fireproof valve body and the chimney pipeline rises is avoided, and the overall safety and the installation stability are improved.