354 results about "Flame arrester" patented technology

The utility model discloses a jacket heat preservation flame arrester for high-oxygen VOCs (volatile organic compounds) to enter dry quenching, which belongs to the technical field of flame arresters and comprises two valve bodies respectively communicated with a gas pipeline for the VOCs to enter the dry quenching and a flame arresting screen arranged between the two valve bodies, a jacket capable of introducing steam to preserve heat is arranged between the two valve bodies, and the two valve bodies are communicated with a gas pipeline for the VOCs to enter the dry quenching. The jacket is arranged on the outer side of the fire-retardant screen; a jacket inlet communicated with a steam pipeline is formed in one side of the jacket, and a jacket outlet communicated with a drain pipeline is formed in the other side of the jacket. According to the utility model, the temperature around the fire-retardant screen can be ensured not to be lower than the crystallization temperature of naphthalene gas, so that the naphthalene gas in VOCs gas can smoothly pass through the fire arrester and then enters dry quenching for incineration, and the VOCs are really discharged without external emission.

The invention discloses a lithium battery thermal runaway heat insulation buffer fire extinguishing protection device which comprises a box body and a box cover capable of being turned over to cover the box body in a sealing mode, a pressure relief opening is formed in the box cover or / and the box body, and a quenching flame arrester is installed in the pressure relief opening in a matched mode; wave energy absorption pieces are installed on the inner wall of the box body and are combined energy absorption pieces in a wave continuous shape or protruding single energy absorption pieces. According to the quenching flame arrester, nearby flames can be timely and effectively quenched, the flames are prevented from disordering and spreading, the fire extinguishing efficiency and the fire extinguishing strength are enhanced, and the quenching flame arrester located at the pressure relief opening or the exhaust opening not only has the flame quenching effect, but also has the pressure dredging or pressure relief effect; the explosion resistance is improved through the double-layer box plate, flame diffusion and explosion pressure dredging are jointly inhibited through the quenching flame arrester and the wave energy absorption piece, explosion impact and high-temperature conduction are resisted through the composite heat insulation buffer layer, the safety of a passenger cabin is guaranteed, and the device is suitable for aviation lithium battery emergency disposal scenes.

The invention relates to a low-concentration combustible gas concentration system and an operation method thereof, and the low-concentration combustible gas concentration system comprises a flame arrester, a mixing cavity, a non-combustible gas supplementing tank, a gas compressor, a primary separator, a light component secondary separator, a heavy component secondary separator and a concentration regulating valve, the premixed gas sequentially passes through a primary separator, a light component secondary separator and a heavy component secondary separator under the action of a gas compressor to carry out concentration operation on light component combustible gas, non-combustible gas is returned to a mixing cavity, and heavy component gas is discharged into the atmosphere; the invention aims to solve the technical problems of large occupied area and volume, low operation efficiency and poor separation effect of the existing combustible gas separation equipment.

The invention relates to a flame arrester for a gas fuel injector and the gas fuel injector. The flame arrester for the gas fuel injector comprises an outer cylinder wall, an inner cylinder wall and a sealing element, wherein the outer cylinder wall is provided with a gas inlet end and a gas outlet end; the at least two ferromagnets are fixed in the outer cylinder wall, the axial directions of the at least two ferromagnets are parallel to the axial direction of the outer cylinder wall and / or are arranged at an angle relative to the axial direction of the outer cylinder wall, two adjacent ferromagnets in the at least two ferromagnets are mutually spaced through a gap, and magnetic poles of the two adjacent ferromagnets are opposite so that a magnetic field can be formed between the two adjacent ferromagnets; when flame enters the gap between the at least two ferromagnets from the gas outlet end of the outer cylinder wall, plasma in the flame can deflect under the action of a magnetic field so as to be annihilated when touching the inner surface of the outer cylinder wall. According to the flame arrester, damage of tempering to the gas fuel injector or a connecting pipeline of the gas fuel injector can be prevented.

The invention relates to the technical field of waste gas treatment, and provides an oil tank waste gas adsorption treatment system and a control method. The anti-explosion variable-frequency induced draft fan is arranged on the main oil and gas pipeline; the flame arrester is arranged on the main oil and gas pipeline and located on the upstream of the air inlet direction of the anti-explosion variable-frequency induced draft fan; a gas inlet of the first activated carbon adsorption box is communicated with the main oil-gas pipeline, and a gas outlet of the first activated carbon adsorption box is communicated with a gas inlet of the second activated carbon adsorption box in series; the inlet pressure sensor is arranged at the air inlet end of the first activated carbon adsorption box; the outlet pressure sensor is arranged at the air outlet end of the second activated carbon adsorption box; the inlet valve is arranged at the air inlet end of the first activated carbon adsorption box, and the outlet valve is arranged at the air outlet end of the second activated carbon adsorption box. Through cooperation of series adsorption, active air induction and intelligent monitoring, multiple functions of efficient purification, safe operation and state early warning of the oil tank waste gas adsorption treatment system are achieved.

The utility model discloses a low-temperature rectification process system for preparing ultralow-concentration deuterium-depleted water, and relates to the technical field of preparation of deuterium-depleted water. The system comprises a low-temperature rectification system, wherein the low-temperature rectification system is provided with a feeding pipeline, a low-deuterium-hydrogen isotope gas pipeline and a high-deuterium-hydrogen isotope gas pipeline; the feeding pipeline is provided with a feeding mass flow controller; the low-deuterium hydrogen isotope gas pipeline is provided with a first discharge mass flow controller and is connected with a gas conversion system; the deuterium-rich hydrogen isotope gas pipeline is provided with a second discharge mass flow controller and is connected with an exhaust pipeline through a flame arrester; the inlet side of the flame arrester is further connected with a vacuum pump, the inlet side of the vacuum pump is connected with a third pneumatic valve, and the third pneumatic valve is connected with a low-deuterium-hydrogen isotope gas pipeline and connected with the inlet side of the flame arrester through a safety protection discharging system. According to the utility model, the separation efficiency of hydrogen isotopes is improved, so that ultralow-concentration deuterium-depleted water is produced more effectively, and compared with the prior art, the preparation process is simplified conveniently.

The invention provides a novel detonation flame arrester which comprises a first shell, and an inlet is formed in the first shell; the third shell and the first shell are symmetrically arranged, and an outlet is further formed in the third shell; the second shell body is arranged between the first shell body and the second shell body; the fire retardant unit is connected in the second shell in a sliding manner; a first spring connected with the first shell is arranged on one side of the fire retardant unit, and a second spring connected with the third shell is arranged on the other side of the fire retardant unit. When explosive shock waves enter the detonation flame arrester, the flame arresting unit slides under the explosive shock, compresses the first spring and stretches the second spring, or stretches the first spring and compresses the second spring.

The invention relates to a low-concentration gas intrinsically safe combustion device, which relates to the technical field of coal resource utilization and comprises a safe ignition unit, a multi-stage backfire prevention unit, a multi-blow-off prevention unit, a combustion chamber, a control unit and an explosion venting unit. The safety ignition unit adopts a staged ignition mode, and the 100% ignition success rate is achieved through a high-energy igniter and a combustion starter; the anti-backfire unit forms three-stage protection through a micro-channel, a quick shut-off valve and an anti-detonation flame arrester, and flame returning is blocked; the anti-blow-off unit is combined with a high-heat-insulation labyrinth type combustion chamber by means of the entrainment effect of a swirler and a flame retention module, so that flame is stable and does not break away; the control unit achieves automatic interlocking control through various sensors, and the explosion venting unit conducts directional explosion venting during overpressure. According to the device, the low-concentration gas with the concentration lower than 30% is subjected to intrinsic safety combustion, and the risks of backfire, blow-off and explosion can be avoided.

The invention relates to the technical field of automobile battery fire prevention, and mainly discloses an anti-spontaneous combustion fire-retardant battery which comprises a battery shell, a plurality of battery packs are arranged in the battery shell, a plurality of pressure relief holes are further formed in the battery shell, and fire barriers are further arranged on the pressure relief holes; the flame arrester comprises a plurality of layers of barrier covers, a flame arresting disc is further arranged at the joint of the barrier covers and the pressure relief hole, and a flame arresting seam is formed in the flame arresting disc; wherein the barrier covers are provided with a plurality of flow-through hole layers in the flow measuring direction of the combustion medium, the flow-through hole layers in every two adjacent barrier covers are arranged in a staggered manner, and the flow-through hole layers and the fire-retardant seams are communicated with the inner space and the outer space of the battery shell, and the technology that after thermal failure of the battery, safe pressure relief can be achieved, and flames can be prevented from spreading outwards can be achieved.

The blast furnace front oxygen enrichment system comprises a low-pressure oxygen pipeline laid between an oxygen station and an iron making plant, the low-pressure oxygen pipeline is connected with a blast furnace blower through an oxygen branch pipe, an air outlet of the blast furnace blower is communicated with an air inlet of a blast furnace, and the oxygen branch pipe is provided with a flame arrester and a second manual stop valve. A security nitrogen pipe is connected between the flame arrester and the second manual cut-off valve, and a stop valve, a nitrogen buffer tank and a nitrogen quick cut-off valve are sequentially arranged on the security nitrogen pipe in the airflow direction; the oxygen analyzer monitors the oxygen content in the oxygen branch pipe in real time and transmits a monitored value to the PLC, the PLC judges whether the oxygen enrichment rate of a preset instruction is reached or not, and the flow regulating valve is regulated through the PLC; the system is simple in structure, reasonable in design, convenient to implement, capable of being effectively applied to blast furnace smelting, capable of saving electric energy and production cost, good in using effect and convenient to popularize and use.

The invention belongs to the technical field of pipeline safety, and particularly relates to an intelligent self-cleaning flame arrester device. The device comprises a cyclone separation device, a fire retardant device, a solid-liquid separation device and an intelligent cleaning system, large-particle impurities can be removed in the impurity pre-separation process based on the cyclone separation device, the blockage probability and the cleaning frequency of a fire retardant core are reduced, the production continuity is improved, and meanwhile, the production efficiency is improved. According to the intelligent cleaning system, the design of multi-angle nozzle mounting holes and nozzle base rotation is adopted, full-coverage cleaning of the end face of the fire-retardant core is achieved, cleaning dead angles are reduced, a heating module of the intelligent cleaning system can further dehydrate and dry pipeline gas, oil stains, impurities and the like blocking the fire-retardant core are made to fall off more easily, and the cleaning efficiency and effect are further improved.

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.

A feed valve, a tail gas outlet valve and a filter circulating valve are arranged at the top of a stirring tank, the upper side surface of the stirring tank is connected with the upper part of a filter through a filter overflow valve pipeline, and a bottom outlet of the stirring tank is connected with the bottom of the filter after being connected with a feed pump; a filter discharge pipe is divided into two paths, one path is connected with the receiving tank through a discharge valve, and the other path is connected with a filter circulating valve; a discharge pipe of the receiving tank is connected with a finished product storage tank after being connected with a discharge pump; a tail gas pipeline with a tail gas outlet valve at the upper part of the receiving tank is connected with a gas inlet of a spiral plate heat exchanger after being converged with a tail gas pipeline with a stirring tank tail gas outlet valve; the upper gas outlet of the heat exchanger is connected with a gas buffer tank after being connected with an induced draft fan, a cooling water outlet valve is arranged on the upper side, and a cooling water inlet valve is arranged on the lower side; a lower outlet pipeline is connected with a buffer tank bottom valve, then is converged with a discharge pipeline of the heat exchanger and then is connected with a solvent recovery tank, and a discharge valve is arranged at the bottom of the gas buffer tank. The device is pollution-free in production, energy-saving and consumption-reducing.

The present application relates to waste gas treatment technical field, especially to a kind of direct combustion incinerator water seal fire stopper anti-backfire system and application, including incinerator, combined combustor, waste gas source, waste gas fan, water seal fire stopper main body, desalted water source, desalted water injection component, boundary butterfly valve, waste gas pipeline first hand valve, waste gas pipeline second hand valve, waste gas pipeline third hand valve, waste gas pipeline fourth hand valve, flammable alarm instrument LEL, waste gas pipeline switch valve, water seal fire stopper air inlet pipeline, water seal fire stopper air outlet pipeline and water seal fire stopper burst disc;Water seal fire stopper air inlet pipeline and water seal fire stopper air outlet pipeline are all arranged on water seal fire stopper main body, waste gas source is connected with waste gas fan by pipeline, solve the technical problem that the anti-backfire mode in prior art encounters deflagration backfire or high concentration waste gas impact, fire resistance reliability is insufficient, easily failure due to filter element damage, cannot effectively block flame back to upstream pipeline and device.

The present invention provides a method and system for detecting the operating status of a hydrogen pipeline flame arrester. The key points of the technical solution include: obtaining historical normal data and setting threshold parameters corresponding to various detection information; obtaining detection information of various sensors in real time and preprocessing it; performing time-frequency domain analysis on the preprocessed vibration information to obtain multiple IMF components and residuals, extracting vibration characteristics to perform preliminary vibration anomaly judgment; in response to abnormal vibration characteristics, calculating the dynamic vibration threshold corresponding to the current sampling moment; and making an abnormal judgment on the operating status of the flame arrester at the current sampling moment. The present invention can monitor the abnormal information of the flame arrester in real time, accurately judge the current status of the flame arrester, avoid safety hazards caused by flame arrester failure, and at the same time reduce the tedious operations of manual detection and avoid omissions in manual detection.

The anti-deflagration pipeline flame arrester comprises a first valve body and a second valve body, the first valve body and the second valve body are both in a circular truncated cone shape, connecting flanges are arranged on the short-diameter sides of the first valve body and the second valve body, and a first fixing flange and a second fixing flange are arranged on the long-diameter sides of the first valve body and the second valve body respectively. A first sealing ring is arranged on the inner surface of one side of the first fixing flange, a second sealing ring is arranged on the outer surface of the first sealing ring, and one side of the second sealing ring is connected with one side face of the second fixing flange. By arranging the first fixing ring and the second fixing ring, the first fixing ring and the second fixing ring have extremely high hardness and abrasion resistance, the situation that the sealing performance is reduced due to abrasion caused by long-time use is avoided, and the situation that the sealing performance is reduced due to the fact that the first fixing flange and the second fixing flange are frequently taken down is prevented; and the explosion phenomenon in the pipeline is further caused.

The utility model discloses a natural gas melting furnace for melting aluminum ingots, and belongs to the technical field of metal melting equipment. The melting furnace comprises a box body and a furnace body, a liquid oxygen storage tank, a VPSA oxygen generator and a waste gas treatment box are integrated in the box body, and the liquid oxygen storage tank is connected with an oxygen supply pipeline through a vaporizer; the furnace body shell adopts a gradient refractory layer structure; the oxygen supply pipeline is of a Y-shaped parallel structure, a flame arrester and a dynamic pressure balance valve are arranged in the oxygen supply pipeline, and the oxygen flow is adjusted through linkage of a pressure sensor and a controller. A water-cooling observation window is arranged on the inner wall of the furnace body, and a thermal infrared imager is installed on the outer side to monitor the temperature of a molten pool and feed back and control combustion power. According to the utility model, efficient melting, safe oxygen supply and accurate temperature control are realized through structure optimization, and the device is suitable for continuous melting scenes of aluminum ingots.

The utility model discloses a peculiar smell collection and treatment device in polyester production in the technical field of chemical equipment, which belongs to the technical field of tail gas treatment equipment and comprises a grain cutting dryer and a stripping tower. The activated carbon adsorption box is connected with the exhaust fan through a pipeline, the lower portion of the activated carbon adsorption box is connected with the flame arrester through a plurality of pipelines, and the flame arrester is connected with the storage tanks through pipelines. The method is mainly applied to tail gas treatment in chemical production.

The utility model discloses a hydrogen flame arrester which comprises a cylinder body, a sealing cover, a gas inlet pipe and a gas outlet pipe, one end of the cylinder body is provided with an opening, the sealing cover covers one end of the cylinder body to seal the opening, water is stored in the cylinder body, one end of the gas inlet pipe penetrates through the sealing cover and extends to the position below the water surface, and the other end of the gas inlet pipe is used for being communicated with an emptying pipe of a hydrogen system. One end of the exhaust pipe penetrates through the sealing cover and is located above the water surface, and the other end of the exhaust pipe is arranged outside the barrel. The hydrogen flame arrester overcomes the defects of a dry type hydrogen flame arrester in the prior art, and is simple in structure and easy to manufacture and maintain.

This invention relates to the field of gas pipeline safety protection equipment, and discloses a pipeline overcurrent and overpressure protection device, a flame arrester, and a rectifier. The device includes: a housing with an inlet at one end and an outlet at the other end, containing a first cavity and a second cavity, with a first hole and a second hole formed between the first and second cavities; a sealing element slidably disposed within the housing, one end connected to a first spring; and a pressure relief valve disposed on the side wall of the housing, its inner end extending to the second hole for controlling the opening and closing of the second hole. When the upstream gas pressure of the housing exceeds a preset downstream gas pressure value, the sealing element, pushed by the airflow, overcomes the force of the first spring and seals the first hole, maintaining a sealed state and cutting off downstream gas delivery. This pipeline overcurrent and overpressure protection device is integrated into the flame arrester and rectifier, enabling flame arrest and rectification while also cutting off gas delivery in the event of overpressure or overcurrent in the pipeline.

The utility model discloses a process system for treating desorption waste gas in a matching way, which comprises an equipment main body, the equipment main body comprises a stock bin, a heating desorption section and a desorption cooling section, an activated carbon layer and a bag-type dust collector are respectively arranged in the stock bin, the bag-type dust collector is connected with a chimney through an air supply fan in a sealing way, and the chimney is connected with the equipment main body. A high-temperature bag-type dust collector, a flame arrester, a first cooling heat exchanger, a mechanical degreaser, a desorption fan, a rotary RTO and a second cooling heat exchanger are arranged in the heating desorption section, and a heat preservation dust collector, a fresh air fan and a heating heat exchanger are installed in the desorption cooling section; and the desorption cooling section is hermetically connected with the heating desorption section through a high-temperature gas blower. According to the utility model, gases with different properties generated by desorption are classified and treated, and the heat of the desorbed gases is recycled, so that certain energy waste and subsequent production cost can be reduced, and good energy-saving and environment-friendly effects are achieved.

A gas sensor includes a sensor element for the detection of a gas, an encapsulation, which surrounds the sensor element and has an opening for a gas to be detected to pass through to the sensor element, and a flame arrester, which is arranged in the opening of the encapsulation.

The double-wall battery charging cabinet may include: an outer cabinet wall; an inner cabinet wall spaced apart from the outer cabinet wall to form a thermally insulated air gap between the inner cabinet wall and the outer cabinet wall, the inner cabinet wall defining an interior volume; and an air convection port disposed through the outer cabinet wall and the inner cabinet wall. The cabinet may also include: a flame arrester disposed inside or near the air convection port; a damper located near the air convection port; a fuse link for holding the damper in the open position, the fuse link having a predetermined melting point at which the damper is released to slide horizontally from the open position to the closed position; and a power outlet disposed within the interior volume.

The utility model relates to the field of flash evaporation liquid separation tanks, in particular to a double-cylinder flash evaporation liquid separation tank integrated with a dehydration device. The double-barrel flash evaporation liquid separation tank integrated with the dehydration device comprises a first liquid separation tank, a second liquid separation tank, a condensate water collecting box, a moving ring, a driving mechanism and a rotating mechanism, the first liquid separation tank and the second liquid separation tank are connected through a conveying pipe, and a flame arrester, an air inlet valve and a liquid inlet are arranged at one end of the first liquid separation tank; the condensate water collecting box is installed on one side of the first liquid separation tank and communicated with a condensing device of the first liquid separation tank, and the top end of the first liquid separation tank is fixedly connected with a spraying box. Through regular and thorough cleaning, the equipment can keep the outer wall of the tank body in a clean state, and the influence of dirt and residues on the heat dissipation performance of the equipment is avoided, so that the risk of overheating of the equipment is reduced, and the safety of the equipment is improved. Meanwhile, corrosion and abrasion can be reduced through the clean outer wall of the tank body, and the service life of equipment is prolonged.

The invention provides a hydrogen pipeline flame arrester operation state detection method and system, and the key point of the technical scheme comprises the steps: obtaining historical normal data, and setting a threshold parameter corresponding to each detection information; acquiring detection information of each sensor in real time and preprocessing the detection information; performing time-frequency domain analysis processing on the preprocessed vibration information to obtain a plurality of IMF components and residual errors, and extracting vibration features to perform preliminary vibration abnormality judgment; in response to the vibration characteristic abnormity, calculating a dynamic vibration threshold value corresponding to the current sampling moment; performing abnormity judgment on the running state of the flame arrester at the current sampling moment; according to the invention, abnormal information of the flame arrester can be monitored in real time, the current state of the flame arrester can be accurately judged, potential safety hazards caused by failure of the flame arrester can be avoided, tedious operation of manual detection can be reduced, and omission of manual detection can be avoided.

The invention discloses a waste lye desulfurization tail gas treatment system and method.The waste lye desulfurization tail gas treatment system comprises a desulfurization unit, a tail gas pretreatment unit and a tail gas co-treatment unit; the input end of the desulfurization unit is connected with a waste alkali liquid discharging device, the liquid output end of the desulfurization unit is connected with a waste alkali liquid resource utilization device, and the tail gas co-processing unit comprises a first heat exchanger, a flame arrester, a combined heat and power generation boiler and a flue gas treatment device; the cold side input end of the first heat exchanger is connected with the output end of the tail gas pretreatment unit, the hot side input end of the first heat exchanger is connected with the first output end of the combined heat and power generation boiler, and the cold side output end of the first heat exchanger is connected with the input end of the flame arrester. And finally, up-to-standard emission is realized, the treatment energy consumption is effectively reduced, meanwhile, the construction, operation and maintenance cost of a tail gas incinerator is saved, and the requirements of energy conservation and emission reduction are met.

The application relates to the field of hydrogen fuel cells, in particular to a tail gas treatment device for a hydrogen fuel cell. The device comprises a tail gas discharge pipeline, a self-starting air supplementing mechanism, a plurality of groups of one-way valves which are uniformly distributed along the tail gas discharge pipeline in the axial direction, wherein the one-way valves are composed of elastic valve sheets, the tail gas discharge pipeline is provided with air holes corresponding to the positions of the elastic valve sheets, the exhaust end of the tail gas discharge pipeline is provided with a flame arrester, and the connection part of the flame arrester and the tail gas discharge pipeline is provided with a honeycomb-shaped catalytic structure. The self-starting air supplementing mechanism automatically introduces air under the effect of high-speed airflow entrainment, and the spiral flow guide ribs of the inner tube form strong spiral flow, so that the air inhaled through the air holes and the hydrogen-containing tail gas generate strong turbulent spiral flow in the mixing cavity, and the hydrogen is efficiently and uniformly diluted.

The application relates to the adsorption and desorption technical field and discloses an adsorption and desorption device and a treatment method for treating light hydrocarbon VOCs waste gas, which comprises an inlet flame arrester, one end of the inlet flame arrester is fixed with a light hydrocarbon VOCs waste gas inlet, the other end of the inlet flame arrester is fixed with a plurality of air draft fans through Y-shaped pipelines, the air draft fans are fixed with adsorption and desorption devices through pipelines, a plurality of functional layers are arranged in the adsorption and desorption devices, the functional layers comprise adsorption and desorption layers, heat preservation and cold preservation layers and condensation and heat exchange layers, oil-water separators are fixed in the condensation and heat exchange layers of the adsorption and desorption devices through pipelines. Through the unique adsorption and desorption device structure design, the pipeline arrangement is greatly simplified, the device land occupation area is effectively reduced, the investment cost is reduced, the temperature control is guaranteed, the safety hidden danger caused by high temperature is avoided, and the problems of space and high investment cost are solved.

The invention discloses a bag type dust collector with pre-dust-removing and fire-retarding functions. Comprising an air inlet flue (1), a flame arrester (2), a flame arrester ash hopper (3), a top air inlet flue (4), a connecting pipe (5), a top vertical air inlet bag type dust collector (6) and an air outlet flue (7), the flame arrester (2) comprises a flame arrester shell (21); a baffling impact plate (22) and a suspension device (23) are arranged in the flame arrester shell (21); the suspension device (23) is fixedly connected with a wall plate of the flame arrester shell (21), and the baffling impact plate (22) is fixedly connected with the suspension device (23); and a vertical air inlet pipe (62) and a contracted shutter deflector (63) are coaxially arranged in the vertical direction of the top plane position of the top vertical air inlet bag type dust collector (6). The spark trapping capacity and effect of the bag type dust collector are remarkably improved, the risk that the filter bag is burnt by the sparks is effectively avoided, and the operation safety of the filter bag and the dust collector is guaranteed.

The utility model discloses a drawer type explosion-proof flame arrester in the field of flame arresters, which comprises a main body, a plurality of beads and a gland, the beads are filled in the main body, the gland is mounted at an opening of the main body in a matched manner, and vent holes are formed in the gland and the opposite surface of the opening of the main body; the main body is arranged between the flame arrester pressing plate and the tail gas treatment box, the flame arrester pressing plate is connected with the tail gas treatment box through a connecting piece, and gas in the tail gas treatment box enters the main body through a vent hole in the main body and then enters an exhaust channel in the flame arrester pressing plate through a vent hole in the gland. And finally exhausting from an exhaust channel outlet. The main body of the flame arrester is arranged between the tail gas treatment box and the flame arrester pressing plate, when beads in the main body need to be cleaned, only the flame arrester pressing plate needs to be loosened, the main body is pulled out, the overall structure is simple, and disassembly and assembly are convenient.