487 results about "Bag filter" patented technology

The utility model discloses a storage device for improving the stability of carbon black, which comprises a stock bin, a stirring mechanism and a ventilation mechanism are arranged in the stock bin, the stirring mechanism comprises a stirring shaft arranged in the stock bin and stirring blades arranged on the stirring shaft, the stirring blades are arranged in a multi-layer and multi-angle mode, the stock bin is communicated with a nitrogen storage tank, and the nitrogen storage tank is communicated with the ventilation mechanism. A first electric valve is arranged on a connecting pipeline of the stock bin and the nitrogen storage tank, an oxygen concentration sensor and a humidity sensor are arranged in the stock bin, and the oxygen concentration sensor is interlocked with the first electric valve; the ventilation mechanism comprises an annular ventilation pipeline arranged on the lower portion of the stock bin, a plurality of ventilation holes facing the stirring shaft are formed in the annular ventilation pipeline, and the annular ventilation pipeline communicates with an air blower. The humidity sensor is interlocked with the blower; an air outlet is formed in the top of the stock bin and sequentially communicated with the cyclone separator, the bag-type dust collector and the induced draft fan. The device can effectively prevent the carbon black from absorbing moisture, oxidizing and caking, so that the storage stability of the carbon black is improved, and the dust raising phenomenon can be effectively avoided.

Disclosed in the present invention are a refining device for medicinal ethyl oleate and a use method therefor. The refining device comprises a preset negative pressure vacuum batching apparatus, a vacuum pump, a dynamically adjustable memory reaction kettle, a discharge three-way pipe, a plate-frame circulating filtration assembly, a bag-type filter, a preset negative pressure vacuum finished product storage tank, a second centrifugal pump, and a barrel-type cartridge filter. The preset negative pressure vacuum batching apparatus is in communication with the dynamically adjustable memory reaction kettle; the discharge three-way pipe is disposed at a lower end of the dynamically adjustable memory reaction kettle; an input end of the plate-frame circulating filtration assembly and an input end of the bag-type filter are respectively in communication with and arranged at the other two ends of the discharge three-way pipe; the preset negative pressure vacuum finished product storage tank is in communication with and arranged at an output end of the bag-type filter. The present invention pertains to the field of ethyl oleate production, and specifically provides a refining device for medicinal ethyl oleate and a use method therefor, which overcomes the inability of existing ethyl oleate refining devices to control the peroxide value physicochemical index of the product, and facilitates more uniform and thorough stirring and mixing of materials.

The invention relates to the technical field of asphalt concrete production, in particular to a bag-type dust remover for stone dust recycling, which comprises a dust removal bin, a pattern plate is fixedly mounted on the upper side in the dust removal bin, a plurality of mounting holes are formed in the pattern plate, dust removal bags and a bag cage are mounted in the mounting holes, and an air outlet cylinder is rotatably mounted in the bag cage. A plurality of expansion units which are uniformly arranged up and down are mounted on the outer side of the air outlet cylinder, expansion rings are mounted on the expansion units, and the expansion rings are fixedly connected with the cloth bag cage; through radial expansion and retraction of the expansion ring, a hardened layer on the surface of the filter bag can be effectively broken, meanwhile, the subsequent pulse back-blowing dust removal effect is improved, and the dust recovery efficiency is ensured; when the dust collection bag is locally damaged, the dust collection bag can prevent dust-containing air flow from flowing out through the air outlet cylinder, so that the dust collection bag can still maintain a normal filtering function in other areas except the damaged position, thereby reducing environmental pollution and ensuring the dust collection efficiency.

The invention relates to the technical field of cloth bag dust removal equipment, in particular to a self-cleaning industrial cloth bag dust remover which comprises a dust hopper, a box body is mounted at the upper end of the dust hopper, a cover plate is mounted at the upper end of the box body, a pore plate is mounted in the box body, a dust removal assembly is arranged in the pore plate, and a plurality of rotating rings are rotationally connected into the pore plate. The cloth bag filter element and the frame are both installed in the rotating ring, the frame is located in the cloth bag filter element, the cleaning assembly is installed at the lower end of the pore plate, the multiple sets of guide frames are all installed at the lower end of the pore plate, the lifting shells are all slidably connected to the circumferential faces of the guide frames, the lifting shells are connected through the connecting rods, and the multiple rotating rods are all rotatably connected into the lifting shells. According to the dust removal device, through the effects of the dust removal assembly and the cleaning assembly, the surface of the cloth bag filter element is made to make uniform contact with dust in air, meanwhile, it is avoided that too much dust is accumulated at the lower end of the cloth bag filter element firstly, and the effect that the whole cloth bag filter element absorbs dust uniformly is achieved.

The invention relates to the technical field of ammonium dihydrogen phosphate preparation, and discloses a high-purity ammonium dihydrogen phosphate crystallization device and a method thereof.The high-purity ammonium dihydrogen phosphate crystallization device comprises a first-stage crystallization system, a first-stage centrifugal separation system, a second-stage crystallization system and a second-stage centrifugal separation system which are connected in series. The primary crystallization system comprises a crystal elimination heater, a crystal elimination mixer, a bag filter and a DTB flash cooling crystallizer which are connected in sequence, and is used for primarily purifying a concentrated solution; the primary centrifugal separation system is used for separating primary crystals; the second-stage crystallization system comprises a crystal dissolving tank, an OSLO cooling crystallizer and the like, and deep crystallization is carried out after the first-stage crystal is dissolved; the secondary centrifugal separation system is used for separating secondary crystals; through two-stage crystallization coupling, mother liquor graded circulation, a unique gradient washing process and active impurity control, efficient and continuous production of battery-grade ammonium dihydrogen phosphate with wet-process phosphoric acid as a raw material is realized, the product purity is high, the process flow is simplified, the cost is low, and the system operation is stable.

The utility model discloses a double bag-type dust collector for treating high-chlorine-content flue gas, which comprises a first bag-type dust collector, one side of the first bag-type dust collector is connected with a first dry-type reactor, and the other side of the first bag-type dust collector is connected with a second dry-type reactor. The first dry-type reactor is connected with a first bag-type dust collector communicated with the first dry-type reactor, the second dry-type reactor is connected with a second bag-type dust collector communicated with the second dry-type reactor, the lower end of the first dry-type reactor is provided with a flue gas inlet, one side of the second bag-type dust collector is provided with a flue gas outlet, and the flue gas outlet is connected with a flue gas treatment reactor. The first bag-type dust collector and the second bag-type dust collector are used for deacidifying and dedusting the high-chlorine-content flue gas at the same time. According to the utility model, the reaction time of the chlorine-containing flue gas and the medicament in the bag-type dust collector is effectively prolonged, so that the reaction efficiency is improved.

The application discloses a container type lithium battery energy storage group and relates to the technical field of lithium batteries. The technical key points of the application include a battery box shell, a fixed frame fixed equidistantly in the inside of the battery box shell, lithium battery groups arranged between the fixed frames, a door cover arranged on the front face of the battery box shell, a rain blocking block fixed on the back face of the upper end of the battery box shell, a limiting shaft sleeved in the inside of the rain blocking block, and through hole blocks fixed respectively on the upper and lower ends of the side face of the limiting shaft. The technical effect is that the heat dissipation fan is started to guide the cold air outside into the inside of the battery box shell through the filter screen block, the filter screen block and the drying agent bag filter and dehumidify the gas respectively, the position of the two through hole blocks is adjusted by rotating the limiting shaft, the device can filter and prevent moisture for the lithium battery group, the position of the two through hole blocks is adjusted by rotating the limiting shaft, the drying agent bag is dried, and the air permeable block is back flushed to clean dust.

The utility model provides a VIGA dust remover energy-saving deashing device based on differential pressure-temperature double control, the deashing device is arranged in a bag-type dust remover, an inlet of the bag-type dust remover is communicated with a discharge port of a VIGA, the lower end of the bag-type dust remover is provided with a collecting mechanism used for collecting filtered dust, and the collecting mechanism is provided with an air inlet and an air outlet. The collecting mechanism comprises a guiding assembly arranged at the lower end of the bag-type dust collector, a collecting box is arranged on the lower portion of the guiding assembly, and the guiding assembly is used for guiding dust at the lower end of the bag-type dust collector into the collecting box. And the dust is prevented from remaining at the lower part of the bag-type dust collector, raising along with the dust cleaning operation of the dust cleaning mechanism, and adhering to the outer side of a cloth bag again after dust cleaning is completed, so that the subsequent cleaning efficiency of the bag-type dust collector is influenced, the cleaning frequency is increased, the energy consumption is increased, and the service life of the bag-type dust collector is also shortened.

The present application relates to waste incineration technical field, specifically to a kind of waste incineration flue gas low temperature corrosive test platform and working method.The platform includes the first pipeline connected with the flue gas outlet of bag filter and the second pipeline connected with the flue gas outlet of flue gas cooler, the outlet of the first pipeline and the outlet of the second pipeline are connected with first flue gas main pipe;The first flue gas main pipe is connected with multiple parallel heat exchange branch lines;Each heat exchange branch line is provided with heat exchanger, the heat exchange branch line is provided with flowmeter, flue gas volume regulating valve, temperature measuring point and induced draft fan;The outlet of the heat exchange branch line is connected with second flue gas main pipe, and the outlet of the second flue gas main pipe is connected with chimney and communicates;The cooling water outlet of all heat exchangers is connected with the first cooling water main pipe of cooling tower;The cooling water inlet of all heat exchangers is connected with the second cooling water main pipe of cooling tower.The test platform can be used for the corrosion resistance test and evaluation of various materials.

The utility model provides a waste cracking tail gas treatment device. The waste cracking tail gas treatment device comprises a bag-type dust collector, a washing tower, a desulfurizing tower, a dry filter and an activated carbon device, the waste cracking tail gas enters the bag-type dust collector from a gas inlet of the bag-type dust collector, a gas outlet of the bag-type dust collector is communicated with a gas inlet of the washing tower, a gas outlet of the washing tower is communicated with a gas inlet of the desulfurizing tower, a gas outlet of the desulfurizing tower is communicated with a gas inlet of the dry filter, and a gas outlet of the dry filter is communicated with a gas inlet of the activated carbon device. Heavy metal substances such as mercury in the tail gas are removed through the washing tower and the activated carbon device, so that the problem that the mercury content of the tail gas discharged into the atmosphere exceeds the standard is solved; intercepting particulate matters in the tail gas through filtering equipment such as a bag-type dust collector and a dry filter; pollutants such as acidic substances, nitrogen oxides and carbon monoxide in the tail gas are removed through the desulfurization tower, the carbon monoxide removal device and the oxynitride treatment device, and finally the tail gas reaches the standard and is discharged.

A modular water filter system has an enclosure defining an enclosed space. The enclosure includes a base, a plurality of walls, and a roof surrounding the enclosed space. A water filter system is positioned within the enclosed space. The water filter system includes an inlet configured to receive raw water. A bag filter is coupled to the inlet. A first hose has a first end coupled to the filter and a second end coupled to a first Per- and Polyfluoroalkyl Substances (PFAS) or other treatment vessel. A second hose has a first end coupled to the first treatment vessel and a second end coupled to a second treatment vessel. A third hose has a first end coupled to the second treatment vessel and a second end coupled to a resin trap. An outlet is coupled to the resin trap and is configured to discharge filtered water.

The utility model relates to a multifunctional air conditioner for an industrial building. A rack forms a closed structure through a plurality of side plates arranged around the rack; outdoor fresh air can enter the machine frame through the outdoor air inlet, is filtered through the bag type filter, is preheated or precooled through the energy recovery heat exchanger, and is blown out from the indoor air outlet under the action of the first fan. Indoor air can enter the rack through the indoor air inlet and is exhausted through the outdoor air outlet, so that indoor contaminated air is exhausted outwards; indoor air can also enter the rack from the indoor air inlet, the air return valve is opened, the indoor air is blown out from the indoor air outlet after passing through the energy recovery heat exchanger and the first fan, and indoor air circulation is achieved. Outdoor fresh air introduction, indoor vitiated air discharge and indoor air circulation are integrated in the rack, different functions are achieved according to requirements, the equipment integration degree is high, space utilization is reasonable, and operation and maintenance are convenient.

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 discloses a kind of metal particulate matter control system, including buffer tank, buffer tank is connected with first bag filter, first bag filter is connected with several groups total filter components, total filter components have circulating filter piece, total filter components include finished product storage tank, finished product storage tank is connected with magnetic filter, magnetic filter is connected with first filter, first filter is connected with second filter, second filter is connected with packing machine;NMP in finished product storage tank is extracted by circulating pump and is sent into second bag filter, third filter, finished product storage tank, realizes the circulating filtration of NMP, can more stably filter NMP, there are less particulate matter in NMP, the multi-pass process grading filtration of NMP is realized by first bag filter, magnetic filter, first filter, second filter, avoid relying on some filter centralized to NMP, reduce the degree of jam, can improve the flow efficiency of NMP, filtering effect is good, and filtering efficiency is high.

The present invention relates to a non-woven filter media (100, 200) comprising: - a first melt-blown layer (102, 202) comprising fibers made from a polymer material, wherein the polymer material comprises a thermoplastic resin and at least one of a charge adjuvant and a nucleating agent; - a second layer (104, 204); and - a third layer (106, 206) arranged between the first layer and the second layer, the third layer being made of electrospun nanofibers. The present invention also relates to a filter element comprising this filter media and to a bag filter for a heating, ventilation and air conditioning system, where the bag filter comprises the filter media or the filter element.

The utility model discloses a 1,4-butynediol rectification tower system, the crude butynediol storage tank's discharge gate is linked with crude butynediol delivery pump feed port, and crude butynediol delivery pump discharge gate is connected with the feed port of 1,4-butynediol stripping tower in proper order through bag filter no.

The utility model provides a system for increasing the temperature of a dry quenching calcium-based dry desulfurization agent, which belongs to the technical field of dry quenching desulfurization and comprises a dust removal system, a desulfurization system, an electric tracing band, a heat exchanger and a compressed air pipeline, the dust removal system comprises a dust removal cover, a low-temperature dust removal pipeline, a high-temperature dust removal pipeline, a heat storage cooler, a bag type dust collector, a dust removal fan and an exhaust funnel, the dust removal cover is arranged at the discharge port of the dry quenching body, and the dust removal cover, the low-temperature dust removal pipeline, the heat storage cooler, the bag type dust collector, dust removal air and the exhaust funnel are sequentially connected; the two ends of the high-temperature dust removal pipeline are respectively connected with the dry quenching body and the heat storage cooler; according to the system, when the calcium-based dry desulfurization system is under the working condition in winter, the purposes of enhancing the desulfurization effect, reducing the content of a desulfurizing agent and reducing the operation and maintenance cost are achieved.

This utility model discloses a mechanical cold-press sludge treatment device, including a sludge mechanical cold-press deep dewatering system, a dried sludge incineration waste heat recovery system, and a flue gas purification system; it includes a wet sludge storage silo, a primary sludge conveying pump, a sludge conditioning machine, a secondary sludge conveying pump, a sludge distributor, a sludge cold press, a sludge feeder, a dry sludge storage silo, a sludge feeder, a sludge incinerator system, a waste heat boiler system, an SNCR in-furnace denitrification system, an electrostatic precipitator, a dry deacidification tower, an activated carbon injection system, a bag filter, a lime-gypsum wet deacidification tower, a low-temperature SCR denitrification system, an induced draft fan, and a chimney; this utility model achieves sludge dewatering and drying at room temperature through mechanical cold-pressing technology to reach the conditions for self-sustaining combustion, and then incinerates the dried sludge through a bubbling circulating fluidized bed incineration, fully recovering the heat released from sludge incineration for power generation or heating, thereby realizing the resource utilization of sludge.

The application discloses a kind of respiratory dust separation devices based on electrocoagulation, including horizontal pipeline and detection pipeline, detection pipeline is installed in horizontal pipeline right end pipe orifice position, electrocoagulation flow guide separation structure is installed in horizontal pipeline, detection pipeline is installed with detection separation circulation structure, the dust leakage opening of the lower wall surface of the connection of horizontal pipeline and detection pipeline is opened, bag filter structure is installed below dust leakage opening;The application relates to the field of respiratory dust separation technology, solves the accumulation of the existing respiratory dust separation equipment with the increase of working time, needs to be cleaned frequently, the persistence is poor, needs to be maintained by staff to its separation structure, the efficiency is lower, and operation is more complicated.

This utility model discloses a bag filter dust collector, designed with two air inlet pipes, one for primary use and one for backup, facilitating the addition of additional equipment to be processed. The technical solution is as follows: A bag filter dust collector includes a housing and a hopper. The hopper is located at the bottom of the housing and communicates with it. Multiple dust bags are housed inside the housing. A pulse backflushing device and an air outlet are located at the top of the housing. A discharge device is located at the bottom of the hopper. A first air inlet pipe and a second air inlet pipe are located at the end of the hopper facing away from the air outlet. The inner diameter of the first air inlet pipe is larger than that of the second air inlet pipe. This invention belongs to the field of dust removal technology.

This invention discloses a dust removal device for rice noodle processing, relating to the field of dust removal technology. It includes a support frame, a dust collection box, a top plate, a discharge port, an air inlet pipe, an exhaust pipe, an air blower, a flexible hose, a partition, dust collection bags, a cleaning mechanism, and an installation mechanism. The invention utilizes a cleaning mechanism where the dust collection bags filter airborne dust. When excessive dust accumulates on the dust collection bags, the discharge port is opened and the exhaust pipe is closed to prevent air leakage during subsequent backflushing cleaning, which could affect the cleaning effect. Simultaneously, the dust collection bags are automatically vibrated to dislodge some of the dust. Then, the air blower is activated to backflush the dust collection bags, blowing off any remaining dust. This facilitates the cleaning of dust generated during rice noodle processing through the dust collection bags. Furthermore, the vibration and backflushing processes prevent excessive dust accumulation on the dust collection bags from negatively impacting the dust removal efficiency.

The utility model discloses a polyester needled felt cloth bag which comprises a fixing ring, a through opening is formed in the top of the fixing ring, an installation opening is formed in the bottom of the fixing ring, the bottom of the fixing ring is movably connected with a bag body through the installation opening, the top of the bag body is fixedly connected with a bag ring, and the outer side of the bag body is movably connected with a fixing sleeve. The bottom of the fixing ring is in threaded connection with an adjusting rod, the bottom end of the adjusting rod is movably connected with a telescopic rod, the bottom end of the telescopic rod is in threaded connection with a ground ring, and the interior of the telescopic rod is movably connected with a telescopic spring. When the polyester needled felt cloth bag is installed, the telescopic spring can stretch out, the adjusting rod and the telescopic rod can stretch out, the adjusting rod and the telescopic rod can reach the length of the composite bag body, the polyester needled felt cloth bag can be fully unfolded when installed, the framework can be matched within a certain length according to the length of the cloth bag, and therefore the filtering effect of the polyester needled felt cloth bag is improved.

The utility model provides a kind of filter bag filter core interface ring with general adaptive structure, it includes bearing inner ring, bearing outer ring and radial washer, the filter bag filter core interface ring is switched quickly by bearing inner ring and bearing outer ring combination structure to realize filter core and filter bag, without replacing interface structure can be adapted to different filtering needs, significantly improve production flexibility, reduce equipment modification cost, radial washer is formed double-lip structure by V-shaped notch design, lip adapts to shrink or swell when being pressed, enhance radial dynamic sealing effect, the axial washer of mating end ring further prevents medium leakage, double sealing design is applicable to high pressure or high-precision filtering scene, compatibility, sealing and maintenance efficiency are all superior to traditional fixed interface.

The invention relates to an activated carbon washing wastewater zero discharge device and a discharge process thereof. The device comprises a carbon deposition tank, a resin tank, an impurity-removed storage tank, membrane equipment, a concentrated water storage tank, low-temperature evaporation equipment, an aeration stirring barrel, a cloth bag filter, a transfer barrel and an automatic fine filter which are sequentially connected through pipelines. The process comprises the following steps: (1) precipitating activated carbon washing wastewater through a carbon precipitation tank, and removing suspended carbon particles to obtain pretreated wastewater; (2) pumping the pretreated wastewater in the step (1) into a resin tank filled with modified cation exchange resin, and removing cation impurities to obtain an impurity-removed liquid; (3) concentrating and separating the impurity-removed liquid in the step (2) through membrane equipment to obtain concentrated water and fresh water, and recycling the fresh water; (4) concentrating the concentrated water obtained in the step (3) through low-temperature evaporation equipment until the concentration of phosphoric acid is 60% or above to obtain a concentrated solution, and recycling condensed water; and (4) decoloring and filtering the concentrated solution in the step (4) to obtain regenerated pure phosphoric acid, and recycling the regenerated pure phosphoric acid.

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.

This utility model relates to the technical field of dust removal devices, and discloses a pulse dust removal mechanism for a bag filter dust collector. It includes a fixed pipe, an air inlet pipe fixedly connected inside the fixed pipe, a fixed assembly installed on the outside of the air inlet pipe, a beater plate installed at the bottom of the fixed assembly, a second spring rotatably connected to the bottom of the beater plate, and an air jet assembly installed at the bottom of the second spring. The fixed assembly includes a fixed frame, which is slidably connected to the outside of the fixed pipe. In this utility model, the fixed frame is first fixed inside the dust collector. Then, the air inlet pipe carrying the bottom air jet assembly passes through the middle of the fixed frame from the bottom of the equipment. The clamping head, due to the spring extension, engages with the slider, achieving quick fixation of the air jet assembly. When replacement is needed, simply push the air pipe upwards; the slider engages with the clamping head in the clamping slot, and then lower the air inlet pipe to remove the bottom air jet assembly, achieving quick disassembly.

The present application belongs to the technical field of energy saving and consumption reduction of titanium dioxide production, and particularly relates to a method for energy saving and pollution reduction in the calcination process of sulfuric acid method titanium dioxide. The present application realizes the cascade utilization of high-temperature to medium-low-temperature waste heat through the integrated scheme of "preheating and quality improvement + oxygen-rich calcination + tail gas synergistic desulfurization and denitrification + resource utilization of by-products", that is, the calcination tail gas (1000-1100℃) is first used to generate steam for production through a waste heat boiler, and then is used for preheating and drying metatitanic acid after being cooled, thereby realizing the cascade utilization of high-temperature to medium-low-temperature waste heat, and simultaneously, the oxygen-rich combustion improves the fuel efficiency, the natural gas combustion is more sufficient, the energy consumption per unit product is reduced by 30-40%, and the ammonia method is used to simultaneously remove SO2 and NO x in a single reactor, the desulfurization efficiency is greater than or equal to 95%, the denitrification efficiency is greater than or equal to 85%, the concentration of dust in the tail gas after being removed by a bag filter is less than or equal to 10 mg / Nm3 for emission, the unity of environmental benefits and economic benefits is realized, and a new path is provided for the green upgrading of the sulfuric acid method titanium dioxide industry.

The bag filter external frame comprises a filter frame body, a rotary sealing ring is rotationally installed on the edge of one end of an installation ring groove, connecting hinges are installed on the edge of one end of a primary return air inlet and the edge of one end of a fresh air inlet, and an air inlet guide groove is formed in the other side of each connecting hinge in an overturning mode. A jet head is installed at the communicating position of the primary return air inlet and the filter frame body, a reset rotating shaft is installed on the edge of the upper end of the inner wall of the filter bag, and a sealing plate is installed on the other side of the reset rotating shaft. The bag filter external frame for the air inlet can drive the filter bag to perform one-way communication through the closing plate and the reset rotating shaft, filter material backflow is avoided, the filtering effect is good, double closing can be performed through the air inlet guide groove and the rotary closing ring, loosening is avoided, matrix ventilation can be performed through the air jet head at the primary air return inlet, and the air inlet is more uniform. The air mixing effect is good, the cover plate can be conveniently and rapidly opened and closed through the locking buckle block and the locking buckle groove, and maintenance and use are convenient.

The invention relates to the technical field of carbon black production, in particular to a carbon black drying system. In order to solve the technical problem that flue gas generated by a carbon black drying system in the prior art needs to be desulfurized and denitrated, the invention provides a novel carbon black drying system which comprises a cyclone separator, tail gas separated by the cyclone separator and powdery carbon black are cooled by cooling water of a Venturi tube and then enter a main bag filter, and the tail gas and the powdery carbon black enter the main bag filter. Powdery carbon black treated by the main bag filter enters from a pipeline in front of an inlet of a cyclone separator after passing through an air blower and a granulator, and enters the cyclone separator after being subjected to contact heat exchange with a high-temperature gas-solid mixture; high-temperature dry granular carbon black discharged from the lower part of equipment of the cyclone separator is subjected to heat exchange by an air separator, and is screened into residual powdery carbon black and low-temperature dry granular carbon black, the low-temperature dry granular carbon black is conveyed to a carbon black storage system, and the residual powdery carbon black passes through an air blower and then enters a granulator for re-granulation. By means of the drying system, the initial investment cost of carbon black production design is reduced.

The utility model discloses a bag type dust collector for steelmaking converter gas. The middle box body is welded to the supporting column, the air inlet pipe is welded to the side face of the lower portion of the middle box body, the four-way air distributor is welded to the end of the air inlet pipe, the four-way air distributor is arranged in the center of the middle box body, and the four-way air distributor comprises a four-way connector, a left air outlet pipe, a right air outlet pipe and a conical air diffuser. The air inlet pipe is horizontally welded to the air inlet end of the four-way connector, the left air outlet pipe and the right air outlet pipe are symmetrically welded to the left air outlet end and the right air outlet end respectively, and the conical air diffuser is welded to the lower portion; the middle box body is cylindrical, the side wall of the middle box body is an arch-shaped arc-string channel, the left side and the right side of the corresponding pattern plate are arch-shaped arc-string areas, the middle of the corresponding pattern plate is a filtering area, pattern plate holes are formed in the filtering area, and filtering elements are installed on the pattern plate holes. According to the device, the contact probability of coal gas and flue gas can be obviously reduced, the explosion-proof capability of equipment is improved, the airflow rising speed is reduced, dust settling is facilitated, the running resistance and energy consumption are reduced, and efficient, safe and energy-saving running of the converter coal gas bag type dust collector is realized.