474 results about "Baghouse" patented technology

The invention discloses an environment-friendly low-pressure pulse bag type dust collector, and relates to the technical field of bag type dust collectors. Comprising a dust remover and a dust collecting hopper, a filter bag frame is installed in the dust remover, multiple sets of filter openings are formed in the outer wall of the filter bag frame, filter bags are fixed to the bottoms of the filter openings, bag cages are installed on the inner walls of the filter bags, dust removing assemblies are arranged on the inner walls of the bag cages, threaded rods are rotatably installed at the bottom of the filter bag frame, moving seats are installed on the outer walls of the threaded rods, and cleaning assemblies are arranged on the outer walls of the moving seats. Electric push rods are symmetrically mounted on the two sides of the inner wall of the dust remover, push blocks are fixed to the extending ends of the electric push rods, gravity sensors for controlling the extending lengths of the electric push rods are mounted on the two sides of the top of the filter bag frame, a limiting plate is fixed to the inner wall of the dust collecting hopper, a dustproof baffle is slidably mounted in an inner cavity of the limiting plate, and a vibration assembly is arranged on the outer wall of the dustproof baffle. By arranging the ash removal assembly, the utilization rate of pulse airflow is increased, and the cleaning effect of the bottom of the filter bag is further enhanced.

Systems and methods for recovering emissions from industrial facilities are disclosed herein. The systems can include an emissions recovery system for use in an industrial facility comprising ducting, a first vent, and a second vent at an opening. The ducting can have a first end region fluidically coupled to a baghouse, and a second end region, opposite the first. The ducting can be configured to operate under a vacuum. The first vent and the second vent can each be fluidically coupled to the second end region of the ducting. The first vent can be positionable at a first distance from the opening, and the second vent can also be positionable at a second distance from the opening. Each of the first and the second vents can be configured to collect emissions particles released from at least the opening.

The utility model relates to the technical field of bag-type dust collectors, and discloses a low-emission environment-friendly pulse-jet bag-type dust collector, which comprises a dust collector body, and an ash bucket is fixedly mounted at the bottom of the dust collector body. According to the low-emission environment-friendly pulse-jet cloth bag type dust collector, the filter bag in the dust collector body is in a state that no airflow passes through, then the pulse device is started to carry out pulse-jet dust removal by using compressed air, and the closing time of the exhaust pipe is enough to ensure that dust stripped from the filter bag settles to the dust hopper after the dust is jetted; the phenomenon that dust is attached to the surface of an adjacent filter bag along with airflow after being separated from the surface of the filter bag is avoided, dust cleaning of the filter bag is thorough, the dust is cleaned by arranging a driving device, a first rotating shaft and a cleaning plate, the dust can continuously reach a collecting box, the dust is prevented from being attached to the inner wall of a dust hopper, accumulation is avoided, and the service life of the filter bag is prolonged. Furthermore, the dust emission concentration can be obviously reduced, and the pollution to the environment is reduced.

The invention relates to the technical field of bag type dust collector filter bag abrasion detection, in particular to a filter bag damage non-contact detection method and system based on acoustic array positioning. The method comprises the following steps: arranging an acoustic sensor array in an air purification chamber of the dust remover, and collecting acoustic signals in real time; after band-pass filtering is carried out on the signals, feature vectors of the signals are extracted and matched with a pre-established acoustic fingerprint database, so that a filter bag damage event is recognized; after identification, based on the time difference of arrival of the signal to at least three sensors in the array, combining the coordinates of the sensors and the sound velocity, and utilizing a TDOA positioning algorithm to calculate the space coordinates of the damaged sound source; and finally, matching the coordinates with a pre-stored filter bag coordinate mapping table, determining the number of a specific damaged filter bag, and performing visual highlight marking on a pattern board plane layout of an application layer terminal. The online, real-time, automatic and accurate positioning of the damaged filter bag is realized, the problem that the prior art can only give an alarm but cannot position is solved, and the operation and maintenance efficiency and safety are improved.

The invention discloses an intelligent linkage control system and control method of a pulse bag type dust collector, and belongs to the technical field of industrial dust collection automation control. According to the system, a multi-parameter monitoring module, an intelligent control module and an execution device are integrated, a'monitoring-analysis-regulation 'closed-loop control system is constructed, and dynamic cooperative regulation of a pulse dust cleaning device and an induced draft fan is achieved. The system can respond to inlet dust concentration fluctuation, filter bag resistance change and flue gas amount fluctuation in real time, and automatically adjust the blowing frequency, the fan rotating speed and the ash removal mode, so that the problems of unstable emission, high energy consumption and short filter bag service life of a traditional control system are solved.

The invention belongs to the technical field of bag type dust collection, and discloses an ore processing pulse bag type dust collector for a mine field, the ore processing pulse bag type dust collector comprises a support, a cleaning bin and a dust hopper, the left bottom and the right top of the cleaning bin are sequentially provided with an air inlet pipe and an exhaust pipe, and the inner wall of the cleaning bin is provided with a partition plate; a plurality of groups of filter bags which are distributed in a matrix are fixedly mounted at the top of the partition plate, a transfer bin is fixedly mounted at the bottom of the inner wall of the cleaning bin, and an air inlet which communicates with and coincides with the air inlet pipe is formed in the left side of the transfer bin. According to the device, high-pressure dust-containing air flow from the air inlet pipe is converged through the inner cavity of the transfer bin and finally is obliquely and upwards sprayed out through the air outlet pipe, spiral ascending air flow from bottom to top is formed in the inner cavity of the cleaning bin, and the tip movement direction of the dust-containing air flow is spirally changed, so that any part of the outer surface of the filter bag can be uniformly covered; therefore, the uniformity of the filter bag during filtering is ensured, and the maintenance period of the device is effectively prolonged.

The present invention provides an industrial smoke monitoring method and system with the ability to predict the life of filter bags. The method sets sensors at the air inlet and air outlet of a bag dust collector, and the sensors are used to collect the smoke temperature, smoke humidity, smoke concentration, air intake volume at the air inlet, and smoke concentration at the air outlet in real time; based on the collected data, the real-time filtration efficiency and resistance of the filter bag are calculated, and a mathematical model between the filter bag resistance and the filter bag life is established; according to the mathematical model, the life of the filter bag is predicted by monitoring the resistance change of the filter bag, and the replacement time of the filter bag is determined; the method can accurately calculate the real-time filtration efficiency and resistance of the filter bag, and achieve accurate prediction of the filter bag life.

The utility model discloses a pocket type dust collector for discharging a calcium carbide furnace, which comprises a dust collection box body, a bag mounting frame is arranged in the dust collection box body, a counterbore is arranged on the bag mounting frame, a dust collection bag is arranged in the counterbore, a framework is arranged in the dust collection bag, and an elastic ring is arranged on the framework; a cover ring is rotatably arranged above the dust removal bag, and the dust removal bag is detachably installed in the counterbore through a plug pin by means of the cover ring. According to the dust collection bag, the dust collection bag is detachably installed in the counterbore through the elastic ring, the cover ring and the plug pin, and the dust collection bag can be replaced by pulling out the plug pin and rotating the cover ring during replacement; and meanwhile, the dust removal bag is fastened in the countersunk head groove through the cover ring and the elastic ring, so that the dust removal bag is not easy to fall off.

The utility model relates to the technical field of dust collection equipment, in particular to a pulse bag type dust collector with a dust collection mechanism, which comprises a dust collector box body, a hollow plate, a dust collection cloth bag and a framework, a hollowed-out plate is connected to the inner wall of the dust collector box body, and a dust collecting bag is mounted in the hollowed-out plate in a penetrating manner. According to the pulse bag type dust collector with the dust collecting mechanism, a driving motor is started to drive a spiral plate to clean the inner wall of the dust collector box body, accumulated dust is stirred and discharged into a cart, a rotary spray head sprays water mist to fall dust, and the dust is collected in the cart, so that the pulse bag type dust collector collects the dust; the weight of the dust collecting bags is detected through the resistance type film pressure sensor, the controller is operated to start the Y motor to adjust the spraying pipe to move front and back, the X motor is started to adjust the spraying pipe to move on the two sides, the dust collecting bags are cleaned one by one, and when the dust collecting bags are replaced, the blowing pipe does not need to be disassembled, so that the dust collecting bags of the pulse bag type dust collector are convenient to replace.

A pulse bag type dust collector comprises a shell, a filtering mechanism and a dust collecting hopper, the filtering mechanism and the dust collecting hopper are vertically arranged in the shell, an air inlet pipe is arranged on one side of the dust collecting hopper, an exhaust port communicated with the air inlet pipe is formed in the upper portion of the filtering mechanism, and a wind blocking mechanism is arranged in the dust collecting hopper and comprises a wind blocking plate and a flow guiding piece arranged on one side of the lower portion of the wind blocking plate. The upper part is positioned above the air inlet pipe, and the lower part is vertically arranged on one side of a pipe orifice of the air inlet pipe; the flow guide piece is detachably arranged on the face, opposite to the pipe opening, of the lower portion of the wind shield and is of a conical structure. According to the utility model, dust-containing gas entering from the gas inlet pipe can be primarily guided through the wind shield, the dust-containing gas is dispersed to the inner periphery of the dust collecting hopper along the conical surface through the guide piece, and then the dust-containing gas flows upwards, is filtered by the filter bag of the filter mechanism, and is discharged from the exhaust port; the wind shield and the flow guide piece can reduce the flow speed of dust-containing gas, reduce impact on the filter bag, prolong the service life of the filter bag and improve the filtering effect of the filter bag.

The utility model discloses a bag type dust collector for gas treatment, which relates to the technical field of gas treatment and comprises a dust collection box, a dust collection groove is arranged inside the dust collection box, and an exhaust groove is arranged inside the dust collection box and at the top of the dust collection groove. The bag type dust collector for gas treatment has the beneficial effects that the dust removal filter bags can be stacked for a certain length on the positioning frame through the sleeving connection of the positioning frame and the dust removal filter bags, and the dust removal filter bags are limited and protected by the limiting cover, so that the stacked parts are not in contact with the outside, and the dust removal effect of the dust removal filter bags is improved while the filter bags are used for filtering and removing dust of gas. Under the action that the reel fixes the other ends of the multiple filter bags, the filter bags can be wound through rotation of the reel, the used parts of the filter bags are wound on the outer side of the reel, and the stacked parts of the filter bags between the positioning frame and the limiting cover are pulled to be unfolded by the corresponding length for dust removal work, so that manual automatic replacement is replaced, and the dust removal efficiency is improved. The dust removal efficiency is favorably improved.

The invention discloses a large bag type dust collector used under a high pressure working condition, the large bag type dust collector comprises an air inlet pipe, a shell and a top cover, the left side of the shell is provided with the air inlet pipe communicated with the shell, the inner top surface of the shell is provided with a mounting plate, and the bottom of a metal filter bag is connected with the top surface of a mounting frame through a first spring; the peripheral surface of the mounting frame is connected with the inner wall of the shell through a second spring, and a rapping hammer is mounted between the left side of the mounting frame and the inner wall of the shell and is made of a magnet material; the invention provides a large bag type dust collector used under a high-pressure working condition, and solves the problems that an existing bag type dust collector cannot meet two conditions of online dust removal and positive-pressure operation above 0.6 Mpa at the same time, the online dust removal generally adopts a pulse-jet dust removal process, and compressed gas below 0.6 Mpa is adopted to perform reverse blowing on a metal filter bag to realize dust removal; and after the pressure is increased to 0.6 Mpa or above, the pulse-jet ash removal process cannot be applied to the traditional bag type dust collector.

The invention belongs to the technical field of paint spraying waste gas treatment equipment, and particularly relates to a polishing primer chamber paint mist treatment system capable of improving fine paint mist trapping efficiency, which comprises a box type glass fiber filter, a bag type dust collector, an activated carbon adsorption assembly and a desorption catalytic oxidation unit. Paint spraying waste gas is firstly subjected to inertia retardation of a glass fiber structure and fiber trapping to achieve paint mist pre-filtration, and then enters a bag type dust collector to be subjected to deep fine filtration; the follow-up VOC airflow is guided into the activated carbon adsorption unit to be concentrated and adsorbed. An adsorption air path provided with an air inlet valve and a desorption air path provided with an air outlet valve are interlocked and switched, VOC in activated carbon is desorbed and transferred to a desorption pipeline in a hot air desorption mode, waste gas subjected to cold supplementing and air mixing adjustment finally enters a catalytic bed, catalytic oxidation is completed at the low temperature, reaction conditions are maintained through a combustor, and purified gas is discharged after reaching the standard through a chimney. The device has the advantages of high paint mist trapping efficiency, high activated carbon adsorption utilization rate, low catalytic oxidation energy consumption and the like.

The invention relates to the technical field of bag-type dust removers, in particular to a dirt cleaning device for a bag-type dust remover, which comprises a venturi tube, a filter bag and support frames, the filter bag is arranged on the venturi tube, the filter bag is arranged outside the support frames, the support frames are arranged at the bottom of the venturi tube, and the middle parts of a plurality of groups of support frames are close to each other; the cleaning part comprises a fixed frame, a movable block, an adjusting piece and a hoop; through mutual cooperation of the hoop, the support frame and the filter bag, the filter bag is changed into a cylindrical shape from an initial elliptic cylindrical shape and is loosened when high-pressure airflow is used for blowing and cleaning the filter bag, so that the filter bag is fully expanded under the action of pulse airflow and has relatively large elastic deformation, attached dust is more effectively shaken off, and the dust removal efficiency is improved. According to the design, the problem of poor ash removal effect of a traditional ash removal mode is solved, so that on the premise that the safety of the filter bag is ensured, airflow can be in full contact with a filter medium when penetrating through a gap of the filter bag, and the filter efficiency is improved.

To provide a multi-stage two-stream separator for mining, which is used in the process of obtaining raw materials from ore required for refining or other industries. The system includes a feed assembly (1), a screening assembly (2), a dust removal assembly (3), and a frame (4). The feed assembly is mounted on the top of the frame, and the screening assembly is mounted inside the frame. The screening assembly includes a stepped, multi-stage screening bed with at least two stages. The device provides a heavy component collection port on the lower side of the screening bed, allowing the heavy components to be continuously or intermittently discharged through the discharge assembly, reducing the amount of heavy components entering the next stage and fully utilizing the screening capacity of the screening bed. The screening assembly can be a continuous discharge assembly, an intermittent discharge assembly, or a gravity discharge assembly. Clean air treated by the dust removal assembly is drawn into the frame via an external air supply pipe, an air intake frame, and a blower for recycling. It is then recirculated by the screening assembly, and the contaminated air flow is sent back into the bag-type dust remover. This prevents the escape of coal powder and provides a rational overall design, pollution-free operation, and high screening efficiency.

The embodiment of the invention provides a bag type dust collector with a preliminary filtering and collecting structure, which comprises a main body with a filtering cavity, a collecting hopper upwards arranged in the filtering cavity along the flow direction of boiler flue gas in the main body, and a filtering bag assembly arranged in the filtering cavity opposite to the collecting hopper and arranged at the downstream of the collecting hopper, the primary filtering mechanism is arranged between the collecting hopper and the filtering bag assembly; and the preliminary filtering mechanism is configured to preliminarily filter the boiler flue gas collected by the collecting hopper. According to the boiler flue gas filtering device, the preliminary filtering mechanism is used in cooperation with the filtering bag assembly and the collecting hopper, so that solid particles in the boiler flue gas are removed through the preliminary filtering mechanism before the boiler flue gas is filtered, and the situation that the filtering bag assembly is blocked can be remarkably reduced.

The present invention discloses an asphalt mixture stirring and dust removal system and process, including a powder-coated oil dust removal device which is composed of a powder-coated oil device and a first bag filter. The air inlet end of the powder-coated oil device is used to receive the dust generated by batching. The powder-coated oil device includes a fourth dust suction main pipe, a powder spraying pipe, a blower and a powder spraying tank. A vortex pipe section is arranged on the fourth dust suction main pipe, and a feed branch pipe located on the feed side of the vortex pipe section is arranged on the side wall of the fourth dust suction main pipe. The discharging direction of the feed branch pipe is parallel to the air outlet direction of the fourth dust suction main pipe. The bottom discharging ports of the powder spraying tank are respectively connected to the powder inlet of the powder spraying pipe and the air outlet of the blower. The discharging port of the powder spraying pipe is connected to the side wall of the fourth dust suction main pipe, and the discharging port direction of the powder spraying pipe is parallel to the air outlet direction of the fourth dust suction main pipe. The whole system is reasonably designed, the process is simple and ingenious, the dust and flue gas removal efficiency is high, the treatment effect is good, and the purpose of green environmental protection is achieved.

The utility model relates to the technical field of dust removers, in particular to a novel air box pulse bag type dust remover, which comprises an air box pulse bag type dust removal device main body, a purification component is fixedly arranged in the air box pulse bag type dust removal device main body, and an adjusting component is arranged at the front end of the air box pulse bag type dust removal device main body. When impurities are discharged through the cleaning pipeline, the impurities are intercepted by the filter screen and adsorbed to the position above the filter screen, meanwhile, the motor is started to enable the induced draft fan to rotate to blow dust, the filter screen adsorbs the dust, and the impurities fall onto the dust storage plate. Meanwhile, a water pipe of the dust falling box body sprays a water source above the filter screen to degrade dust, the dust is prevented from being guided out, meanwhile, a glass plate structure is arranged at the front end of the device, a pipeline can be arranged in the device, and when much sundries and dust are accumulated, cleaning is facilitated.

The utility model relates to industrial production technical field, concretely is a kind of bag dust collection's unloading device, including star unloader and the hopper of installation in the top of star unloader, it is characterized by: the impeller middle section of star unloader is evenly distributed with multiple radial extension's flower board along the circumference.The bag dust collection's unloading device, by the pushing effect of flower board to ejector rod when star unloader impeller rotates, makes ejector rod to drive cross rod periodically to the material in hopper to carry out agitation and knock, effectively prevents material accumulation blockage, the setting of elastic reset component makes ejector rod can be automatically reset, need not additional power source, simple structure, energy consumption is low, the cooperation of petal-shaped flower board and inclined guide hole, makes ejector rod not only can move up and down in movement process, can also produce horizontal direction's swing, enhances the disturbance effect to material, further improves anti-blocking efficiency, improves the overall reliability of device, reduces maintenance cost and downtime.

The utility model belongs to the technical field of injection pipes, and particularly relates to a circulating water cooling injection pipe structure which comprises a bag type dust collector, a plurality of injection openings are formed in the top of the right side of the bag type dust collector, and the injection openings are fixedly communicated with injection pipes. According to the circulating water cooling assembly, the injection pipe is sleeved with the water cooling sleeve, the water cooling cavity is formed in the water cooling sleeve, the water outlet and the water inlet are formed in the water cooling cavity, low-temperature water is supplemented through the water inlet, cooling water can be heated through heat on the wall of the injection pipe, and hot water is taken out through the water outlet; and a plurality of second heat exchange fins are fixedly connected to the inner wall of the water cooling cavity, and a plurality of first heat exchange fins are fixedly connected to the outer surface of the water cooling sleeve, so that heat exchange between the injection pipe wall and the outside is accelerated, and the situation that the heat of the injection pipe wall is transferred to the pulse valve, and consequently the pulse valve is damaged is avoided.

The utility model relates to the technical field of bag-type dust collectors, in particular to a bag-type dust collector convenient to maintain, which comprises a bag-type dust collector body, and a traveling mechanism and a vibration separator are arranged on the bag-type dust collector body. The vibration separator with the electromagnet is utilized, when a cloth bag is replaced and maintained, the vibration separator is moved to a tubesheet or a tubesheet hole through the walking mechanism, the vibration separator is put down through the winding device, the electromagnet is opened, and then the vibration separator can be fixed to a cage skeleton in the tubesheet or the cloth bag; and accumulated dust and adhesion are effectively treated. An operator does not need to repeatedly lift and place the cloth bag, so that the labor cost is greatly saved.

The invention provides a bag-type dust remover for zinc smoke collection and treatment, and belongs to the technical field of smoke dust removal equipment. Comprising a sealing base clamped at a top tubesheet hole of a dust remover main body, an insertion cylinder is inserted into the inner wall of the sealing base, a cloth bag sleeves the outer wall of the insertion cylinder, a plurality of first clamping pieces are fixedly connected to the outer wall of the insertion cylinder, and a plurality of third avoiding grooves are formed in the inner wall of the sealing base; two clamping grooves matched with an elastic expansion ring of a cloth bag are formed in the inner wall of the sealing base, a clamping plate is fixedly connected to the outer wall of the bottom of the sealing base, and a plurality of segmented grooves are formed in the outer wall of the clamping plate; the auxiliary mounting assembly can facilitate the disassembly and assembly of the cloth bag, and is connected with the insertion cylinder. By arranging the auxiliary mounting assembly, the cloth bag can be quickly dismounted and mounted, a worker can conveniently maintain and replace the cloth bag, and the sealing performance between the cloth bag and a pattern plate hole can be improved.

This utility model relates to a cleanroom air conditioning and dust removal system, belonging to the field of cleanroom technology in the pharmaceutical industry. The system includes a combined cleanroom air conditioning unit, a bag filter, an air supply duct network, a high-efficiency filter air outlet, a return air duct network, a dust removal exhaust hood, a dust removal static pressure box, a dust concentration sensor, and a controller. The bag filter is rigidly connected to the air conditioning unit side-by-side and fixed to the floor of the equipment room, eliminating interference from the equipment to the cleanroom. The outlet of the bag filter is directly connected to the mixing section of the air conditioning unit through the return air duct network, forcibly reusing the dust-removed air as return air. The dust concentration sensor is embedded in the inner wall of the dust removal static pressure box, directly exposed to the dust-laden airflow channel. This application significantly reduces the air conditioning cooling and heating load by physically reducing the demand for fresh air; the centralized layout of the equipment room frees up space in the cleanroom, improving the convenience of operation and maintenance; and the closed-loop dust collection and multi-stage filtration ensure the stability of cleanliness levels D and above.

The invention discloses a waste incineration flue gas treatment method through cooperation of dry-process deacidification and an SCR catalytic filter bag. The technological process comprises the steps of denitration in an SNCR furnace, baking soda dry-process deacidification, activated carbon injection, SCR denitration bag type dust removal and waste heat utilization. Denitration is carried out in the SNCR furnace to remove part of NOx; the baking soda dry-process deacidification tower sprays baking soda powder to efficiently remove acid gas; the activated carbon adsorbs dioxin and heavy metal; the SCR denitration bag type dust collector integrates dust collection and denitration, the outer layer of a filter bag is an expanded polytetrafluoroethylene covering film, and the inner layer of the filter bag is a catalytic felt. And a waste heat utilization device can be selected to recover flue gas heat. According to the method, the flue gas temperature is fully utilized, additional heating is not needed, and operation energy consumption is remarkably reduced. And the device is convenient to transform, and is suitable for flue gas treatment of waste incineration projects after flue gas upgrading.

This invention relates to the field of baghouse dust collection technology and discloses a baghouse dust collection process for zinc oxide preparation. Addressing the problems of difficult dynamic coupling of multiple parameters, control lag, and insufficient system stability in traditional processes, this solution achieves optimization through the following steps: real-time acquisition of baghouse status, gas status, environmental parameters, and system data, namely pressure difference and filtration velocity; construction of baghouse status evaluation models, gas status evaluation models, and environmental status evaluation models; and construction of a system pressure difference-filtration velocity matching model. An exponential function is used to dynamically correct the deviation between pressure difference and velocity, and a hyperbolic tangent function is used to smoothly adjust the target air intake to avoid airflow impact. This achieves real-time response of multi-parameter coupling, reduces pressure difference fluctuations, extends bag life, and significantly improves the system robustness in zinc oxide production.

The utility model relates to movable dust removal equipment for steel ladle hot repair, and belongs to the field of steelmaking continuous casting dust removal. The two guide rails and the two supporting bridges are fixedly arranged on the ground; the multiple hubs are arranged on the supporting bridge frame and connected to the guide rails in a rolling mode. The dust hood is mounted on the supporting bridge frame, and a bag type dust collector and a fan are mounted at the top of the dust hood; an air inlet pipe is fixedly arranged at an inlet of the bag type dust collector and is communicated to a dust collection cover opening of the dust collection cover; an outlet of the bag type dust collector is fixedly provided with an air outlet pipe, the air outlet pipe is communicated to a draught fan, the device travels to the position above a steel ladle to be subjected to hot repair, the dust removal mode is started before the steel ladle is subjected to hot repair, and by means of the sealing characteristic of the dust removal device, excessive wild wind suction is avoided, and dust overflow is avoided. When the steel ladle is subjected to hot repair, the fan is started; and when no task exists, the fan operates at low frequency or stops, so that the operation cost can be greatly saved, and considerable social benefits are achieved.

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 present invention provides a self-adjusting dust reduction device for municipal construction, which relates to the field of bag filters. The self-adjusting dust reduction device for municipal construction includes a filtering component, an elastic member, and a pulse nozzle. The filtering component includes an outer filtering module and an inner filtering module. The outer filtering module includes a first support frame and an outer filter bag. A first air outlet is provided at the top of the first support frame, and the bottom of the first support frame is closed. The outer filter bag is sleeved on the outer periphery of the first support frame. The inner filtering module is disposed inside the first support frame and can slide up and down relative to the outer filtering module. The inner filtering module includes a second support frame and an inner filter bag. A first air inlet is provided at the bottom of the second support frame, and the inner filter bag is sleeved on the outer periphery of the second support frame. The elastic member is connected between the first support frame and the second support frame. The present invention can increase the filtering area of the filtering component without increasing the volume.

The utility model discloses a filter bag fixing device for pulse bag type dust collector, including dust remover body and tab, the tab fixed connection is in the both sides of dust remover body bottom, the tab top side away from the fixed connection of dust remover body has the clamping block, the top of tab is provided with the casing, the inner chamber of casing is opened and has the movable slot, the inner chamber of movable slot is provided with fixed mechanism, the rear side of movable slot inner chamber is provided with the spacing mechanism of cooperation with fixed mechanism uses. The utility model discloses through setting movable slot, fixed mechanism and spacing mechanism's cooperation use, pull limit rod, and limit the plate extrusion spring's while, drive the triangular block to draw out from the inner chamber of card slot, rotate control rod, and control rod drive gear rotation, and the gear is moved to the clamping block through the tooth groove and goes up, has solved the problem that the existing pulse dust collector is mostly through the rope and is tied the filter bag at the dust removal mouth department, and the surface is relatively smooth at the dust removal mouth department, and the filter bag is easy to lead to the problem of falling off.

The utility model discloses a bag type dust collector for resin production, which relates to the technical field of bag type dust collectors and comprises a bag type dust collector consisting of a dust collection box, a partition plate, an air inlet, a suction fan and a pulse cleaning mechanism, and a keel bracket assembly, the keel support assembly comprises a spiral supporting rod, a vertical rod, a top clamping bent part, a bottom clamping bent part, a top fixing unit and a bottom fixing unit. The keel supporting assembly is arranged, the inner wall of the filter bag is supported through the multiple spiral supporting rods distributed in the circumferential direction, the spiral structure of each spiral supporting rod has high deformation resistance, the good supporting effect can be achieved, in addition, the spiral supporting rods are of an integrated structure, and the supporting effect is good. The upper end and the lower end of the spiral supporting rod are fixed to the top fixing unit and the bottom fixing unit through the clamping structures, no welding point exists, and compared with a traditional welding structure, the phenomenon that loosening is caused by unsoldering due to infirm welding or a filter bag is scratched by burrs can be effectively avoided.