351 results about "Baghouse" patented technology

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 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 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 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.

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 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 invention discloses a high-temperature metal bag type dust collector with a state self-sensing function, and relates to the technical field of bag type dust collectors, the high-temperature metal bag type dust collector with the state self-sensing function comprises a support, a dust collection bin is mounted on the support, a flow equalizing bin is mounted below the dust collection bin, and a mounting plate is mounted in the dust collection bin; a plurality of mounting holes are formed in the mounting plate, filter bags are mounted on the mounting holes, an air inlet is formed in one side of the flow equalizing bin, an air inlet pipe is mounted on the air inlet, a pulse piece is mounted on the air collecting bin, an adjusting assembly is arranged at each mounting hole, the pulse pieces are adjusted in real time by detecting working conditions, and a flow dividing assembly is arranged on the flow equalizing bin. The high-temperature flue gas uniformly flows to each filter bag, and the adjusting assembly can monitor the air pressure difference in the dust removal bin in the filter bag in real time so as to judge whether a hot spot or a cold area appears on the filter bag or not, control the pulse dust removal strength according to the detection result, weaken the influence of the hot spot or the cold area, and improve the filtering efficiency and the filtering quality of the filter bag.

The utility model discloses a kind of baghouse structure of large cloth bag dust collector of submerged arc furnace negative pressure, including support, baghouse and cloth bag group, baghouse is installed on support, baghouse is equipped with cloth bag group inside, the inside of the baghouse is separated into multiple independent chambers by installing partition, every independent chamber is provided with dust discharge hopper, air inlet pipeline, exhaust pipeline and blowback mouth, blowback mouth is communicated with each blowback mouth by blowback pipeline.The baghouse structure of large cloth bag dust collector of submerged arc furnace negative pressure, through the working mode of multiple-chamber independent dust filtering, can realize on-line blowback dust cleaning and bag replacement maintenance, realize separate dust removal operation control.

The utility model provides a pulse type bag-type dust collector for a rice production line, which relates to the field of pulse type bag-type dust collectors, and comprises a device shell, the lower end of the device shell is connected with an ash hopper, the lower end of the ash hopper is connected with an ash discharge port, the outer wall of the device shell is provided with an air storage tank, and an air outlet of the air storage tank is connected with an air ejector pipe. An air spraying pipe is arranged in the device shell and inserted into the device shell, meanwhile, the lower end of the air spraying pipe is connected with a Venturi pipe, an electromagnetic pulse valve is connected into a pipeline of the Venturi pipe, the lower end of the Venturi pipe is connected with a filter bag, the upper side of the filter bag is connected with an auxiliary suction mechanism, and a cleaning mechanism is arranged in the device shell. And the cleaning mechanism is arranged on the outer side of the filter bag. The pulse bag type dust collector for rice processing solves the problems that in the prior art, a pulse bag type dust collector for rice processing has dust collection efficiency deviation, and accumulated dust on the inner wall of a device shell cannot be cleaned.

The utility model provides a bag type dust collector, which relates to the field of dust collectors and comprises a bag type dust collector body and a dust hopper, the bag type dust collector body is positioned above the dust hopper; an inner cavity of the bag type dust collector body is communicated with the dust hopper; the ash hopper is provided with a feeding hole; a discharge hole is formed in the top of the bag type dust collector body; the filter assembly in the inner cavity comprises a tubesheet, a bag cage and a filter bag; the bag cage is fixedly connected with the vent holes in the tubesheet; the bag cage is sleeved in the filter bag; the bag cage comprises longitudinal ribs, supporting rings and annular scrapers; the supporting rings are fixed with the longitudinal bars; each annular scraping plate is positioned between two adjacent supporting rings; an iron sheet is arranged in the annular scraping plate; an electromagnet and a first driving mechanism are arranged in the inner cavity; the first driving mechanism drives the electromagnet to move in the vertical direction, and the annular scraper moves along with the electromagnet. According to the utility model, the problem that the filtering efficiency is reduced due to the fact that part of the filter bags cannot be contacted with gas immediately when the filter bags are separated by the moving plate when the moving plate is adopted to control the bristles to clean the filter bags in the prior art can be solved.

The invention relates to the technical field of bag type dust collectors, in particular to a method for predicting the residual life of a filter bag of a bag type dust collector based on multiple pressure sensors. The multiple pressure sensors are evenly distributed in the bag type dust collector, the sound sensor collects air pressure signals generated in the running process of the filter bag in real time, the cumulative load and the blocking condition of the filter bag are determined by analyzing the local air pressure gradient value of the time domain air pressure signals, and therefore the health state of the filter bag can be judged; the data of the pressure sensors at different positions are fused through the fusion model, so that the accuracy of the monitoring data can be greatly improved, the influence of interference factors can be reduced, the residual life of the filter bag can be intuitively reflected, and the situation that a technician cannot replace the filter bag in time due to early warning information lag is avoided.

The invention discloses a flue gas desulfurization device, and relates to the related technical field of flue gas desulfurization, the flue gas desulfurization device comprises a reaction bin, the top end of the reaction bin is communicated with a smoke exhaust pipe and is communicated with an external bag type dust collector through the smoke exhaust pipe, one side of the reaction bin is provided with a material bin, and a material guide plate is fixedly mounted in the material bin; a grinding and feeding assembly is arranged below the guide plate; the reaction bin is communicated with a smoke inlet pipe, a slag outlet is formed in the bottom of the reaction bin, a discharging hopper is fixedly mounted at the slag outlet, and an annular splitter plate is fixedly mounted at the upper part of the reaction bin; the desulfurizing agent spraying device can grind and crush some agglomerated large-particle desulfurizing agents in desulfurizing agents, prevents the agglomerated desulfurizing agents from blocking nozzles in the spraying process, ensures the uniformity of the desulfurizing agents in the spraying process by fully grinding and crushing the desulfurizing agents, can enable the desulfurizing agents to be in full contact with sulfur dioxide in flue gas, and improves the spraying efficiency of the desulfurizing agents. The desulfurization effect is improved.

This invention relates to the field of dust removal equipment, specifically a baghouse dust collector, including a dust collection tower. The dust collection tower contains several conventional filter cartridges arranged in an array. Inside each conventional filter cartridge, a fine filter cartridge is installed via a connecting assembly to replace the dust cake layer. The dust collector also includes a valve assembly for controlling the airflow. This invention uses fine filter cartridges to replace the dust cake layer outside the conventional filter cartridges, thereby enabling the fine filter cartridges to filter submicron-sized dust. This prevents a large amount of fine dust from penetrating the filter cartridges before the dust cake layer rebuilds after cleaning, thus preventing emission peaks and ensuring the stability of emission concentrations. This invention uses a valve frame to seal and protect the fine filter cartridges, and allows pulsed airflow to enter the interior of the conventional filter cartridges for pulse cleaning. Finally, the outlet airflow of the fine filter cartridges is opened, allowing the airflow to pass sequentially through the conventional filter cartridges and the fine filter cartridges, thereby enabling the fine filter cartridges to replace the dust cake layer for filtration.

The utility model discloses a powder collecting device for cement production, and relates to the field of dust collecting devices. The bag type dust collector comprises a main frame body, an upper box body and a lower box body, a crawling ladder is arranged on the outer surface of the main frame body, a lifting mechanism is arranged on the crawling ladder, and due to the arrangement of the lifting mechanism, due to the fact that a worker needs to climb at high altitude in a traditional overhauling mode, the risk is high, and physical exhaustion is large; the lifting mechanism enables a worker to stably stand on the single pedal for lifting operation without climbing, so that the safety accident risk is greatly reduced, the physical burden is relieved, meanwhile, the worker can quickly and accurately reach the maintenance position through the stable lifting of the lifting mechanism and the accurate positioning capability of the single pedal, and the maintenance efficiency is improved. And the maintenance efficiency and accuracy are improved.

This utility model discloses a dust collector for flue gas and dust, relating to the field of waste gas treatment. The key technical features are: a housing and several filter bags; the top of each filter bag is snapped onto the top surface of the housing; a fixing ring is fixedly connected to the bottom surface of each filter bag; several fixing plates are detachably connected to the inner wall of the housing; the fixing rings are detachably connected to the fixing plates; and a through groove is provided on the top surface of each fixing plate. When the fixing plate is connected to the fixing ring, the filter bag is taut, thus keeping it in an extended state, avoiding the need for a frame and ensuring the effective filtration area of ​​the filter bag surface. The PTFE material has good tensile strength, thereby ensuring the service life of the filter bag in a stretched state. The through groove penetrates the fixing plate, ensuring that the flue gas passes smoothly through it.

The utility model relates to the technical field of long bag type dust collector components, and discloses a filter bag protection structure of a long bag type dust collector, which comprises a fixed frame and a movable frame, the fixed frame is in sliding connection with the movable frame, and an adjusting mechanism is arranged between the fixed frame and the movable frame. The fixing frame comprises a plurality of first circular frames arranged at equal intervals from top to bottom, and two sets of first fixing rods are symmetrically and fixedly connected between every two vertically-adjacent first circular frames. According to the utility model, the overall length-adjustable frame protection structure design is adopted, the frame protection structure comprises the fixed frame and the movable frame, the fixed frame and the movable frame are adjusted through the adjusting mechanism, the adjusting mechanism comprises the adjusting handle, the adjusting handle rotates to drive the screw rod connected with the adjusting handle to rotate, and the screw rod can drive the movable frame to rotate. The length of the protective frame of the whole frame protective structure is adjusted, so that the filter bags with different lengths can be conveniently assembled and protected, and the operation is relatively convenient.

The application provides a tobacco stem pretreatment system and method, and belongs to the technical field of tobacco processing. The system comprises a cloth bag dust collector, a feeding conveyor belt, a light weight removing device, a throwing device, a pneumatic conveying device, a buffer cabinet, a stem crook removing machine, a feeding conveyor belt and a quantitative feeding device. The light weight removing device is arranged below the throwing device. The light weight removing device comprises a removing mechanism, a supporting seat, an inclination adjusting mechanism and a feeding mechanism. The removing mechanism comprises two side plates, and three first synchronous shafts arranged in a triangular shape are arranged between the two side plates. After a first driving motor is started, the first synchronous shaft can drive a transmission assembly, and the transmission assembly can drive the nylon cloth belt to rotate continuously. The rubber roller is in a static state, the nylon cloth belt is rubbed with the rubber roller and generates static electricity, so that the second type of light weight impurities can be attracted, thereby helping to remove the second type of light weight impurities mixed in the tobacco stem.

The invention discloses a blast furnace gas dry method bag type dust collector front temperature adjusting system and method, and the system comprises a gravity dust collector which is connected with a blast furnace through a blast furnace raw gas pipeline, and a gas outlet pipeline of the gravity dust collector is provided with a first four-way assembly and a second four-way assembly; a first air outlet of the first four-way assembly is connected with the cooling heat exchanger through a cooling heat exchanger air inlet pipeline, a second air outlet of the first four-way assembly is connected with the heating heat exchanger through a heating heat exchanger air inlet pipeline, and a third air outlet of the first four-way assembly is connected with a first air inlet of the second four-way assembly through a medium-temperature pipeline. A second air inlet of the second four-way assembly is connected with a cooling heat exchanger air outlet pipeline, a third air inlet of the second four-way assembly is connected with a heating heat exchanger air outlet pipeline, and an air outlet of the second four-way assembly is connected with a dry bag type dust collector air inlet pipeline; a first thermodetector is arranged on the blast furnace raw gas pipeline, and a second thermodetector is arranged on a gas outlet pipeline of the gravity dust collector; and a first regulating valve, a second regulating valve and a third regulating valve are respectively arranged on the cooling heat exchanger air inlet pipeline, the medium-temperature pipeline and the heating heat exchanger air inlet pipeline.

The invention discloses a multi-process treatment system for lead smelting smoke dust, and belongs to the field of lead smelting. The device comprises a winding cooling pipe arranged in a guide plate fixedly arranged in the bag type dust collector, the overall temperature of the cooling pipe is guaranteed through flowing of cooling liquid in the cooling pipe, then the overall temperature of the guide plate is guaranteed, temperature exchange with smoke introduced into the bag type dust collector is carried out through the guide plate, and the cooling effect is improved. Meanwhile, the surface of the bag type dust collector is provided with a circulating port, and the temperature of the smoke dust in contact with the filter bag is reduced through the water pumping port, the water pump, the water inlet pipe, the cooling pipe, the overflow pipe and the circulating port, so that the temperature of the smoke dust in contact with the filter bag is further reduced, and the influence of the smoke dust on the service life of the filter bag is reduced; cooling liquid can circulate in the bag type dust collector and the guide plate, after the cooling liquid flows into the bag type dust collector, the heat dissipation area is increased, rapid cooling can be achieved, and the cooling liquid enters the guide plate subsequently, so that the heat exchange effect can be guaranteed.