61results about How to "Achieve dust reduction" patented technology

The invention provides an energy-saving and environmentally-friendly drying method of coal slime and lignite, and comprises the steps that: air is heated by a heating furnace and is introduced to a drum dryer; the coal slime and lignite are discharged after performing heat transferring drying; high-temperature low-humidity hot gas is changed into medium-high-temperature high-humidity hot gas after being heat exchanged in a drying drum and is exhausted from the drum dryer, a large amount of dust coal in the hot gas is removed through a cyclone dust remover, the hot gas enters a first heat exchanger to cool, and is changed into medium-temperature high-humidity hot gas; the hot gas enters a heat pump unit after being cooled by the first heat exchanger, and is changed into low-temperature low-humidity hot gas after being cooled and removed dust; the hot gas is output from an outlet of the heat pump unit, and is changed into medium-temperature low-humidity hot gas through absorbing heat energy; and the hot gas is heated by a second heat exchanger and is changed into medium-high temperature low-humidity hot gas; and the hot gas is induced to the heating furnace for heating and is changed into high-temperature low-humidity hot gas. The device comprises a heating furnace, a drum dryer, a cyclone dust remover, a first heat exchanger, a heat pump unit including a dust removing cover anda second heat exchanger. The method and device provided by the invention have the advantages of efficiency, environment friendliness and good reliability.

The invention provides an efficient blasting relieved drainage method for a covered roadway on a low-permeability high-gas coal bed. The method is characterized in that a parallel floor roadway is built below a covered roadway coal bed; gas pumping holes are formed in the floor roadway by covering the covered roadway coal bed upwards for pumping; 2 to 3 blasting holes are formed between adjacent groups of pumping holes; after the blasting holes are filled with an explosive, water is injected for explosion; the quantity of the blasting holes which explode at one time is not less than 6. Stress waves are formed in coal rock through high-pressure shock waves generated by water coupled charge explosion under the resonance action of the plurality of blasting holes in simultaneous blasting in order to crack the coal rock, gas in the coal bed is replaced with a large amount of CO2 an N2 generated by explosion of the explosive, and a water injection pipe and a gas pumping pipeline are connected for pumping 0.5 hour after explosion. By adopting the method, an efficient blasting permeability-improving pumping technology of the covered roadway on the low-permeability high-gas coal bed is implemented, and operation becomes easy, convenient and feasible.

The invention discloses a mining bubble atomization water mist dust settling device. On the basis of traditional water mist dust settling of a mine, the mine atomizing dust settling device which is good in atomizing effect, high in dust settling rate, low in water consumption and air consumption, not prone to nozzle blockage, convenient to install, capable of saving energy and environmentally friendly is designed according to the bubble atomization principle. The mining bubble atomization water mist dust settling device is mainly characterized in that by means of an existing underground dustproof pipeline and a compressed air pipeline, a water source and an air source do not need to be pressurized, and no strict requirement for the size relationship of water pressure and air pressure exits; on the basis of not conducting any changing or adding auxiliary devices, water mist good in atomizing effect is produced, dust settling effect is greatly improved, and remarkable effect can be achieved for preventing and treating respirable dust; meanwhile, plenty of water sources is saved, and underground working conditions are effectively improved; when dust settling is conducted in places such as coal faces and driving faces with large gas gushing amount, part of air carried in the water mist can have an effect on diluting gas and preventing local gas from exceeding the limit to a certain extent.

The invention discloses a mine dust grading combined dust fall device. A primary dust fall system is formed by an inner spraying device and an outer spraying device which are arranged in a coal cutter or a heading machine. The mine dust grading combined dust fall device comprises a secondary haze transform system formed by an ultrasonic wave dry haze generator and a tertiary drizzle wall haze fall system formed by a drizzle generating device. By means of the mine dust grading combined dust fall method and device, conventional instantaneous point dust fall is changed into segmental process dust fall, mine dust different size fraction can be inhibited and reduced by forming water mist particles or gas water mist particles different in particle diameter, and particle diameter grading, segmental inhibition and reduction and process transformation of mine dust in wind current of mining ports are achieved. The mine dust grading combined dust fall device can move along with pushing of the mining points and has functions of automatic control and rain stopping when people go out, dust fall efficiency is high, and dust inhibition, dust fall, explosion protection, fire protection, temperature reduction and drag reduction of return current are achieved by humidifying dirty wind. Compared with the conventional dust fall method, dust fall effect is obvious.

The invention relates to a method for preventing gas from being accumulated at corners on coal faces. A process tunnel is added on the basis of an original 'U'-shaped mining gateway, and is placed at the top of a coal seam, and is close to the inner side of a return airway and parallel to the return airway and an intake airway, and the intake airway is respectively communicated with the return airway and the process tunnel via working surfaces so as to form two 'U'-shaped ventilating channels; and the process tunnel not only can realize total negative-pressure ventilation, but also realizes local fan ventilation. A drill site is further arranged in the process tunnel, gas is extracted, and water or stopping liquid is injected into the coal seam. The process tunnel is added on the basis of the original 'U'-shaped mining gateway to form the double 'U'-shaped ventilating channels, return air of the original return airway is divided, and accumulation of gas at corners on a return air area is avoided; and the drill site further can be arranged in the process tunnel to extract gas of the coal seam, an adjacent layer and a worked-out section, or the water or stopping liquid is injected into the coal seam, the purposes of dust fall and fire prevention are achieved, and production is not affected.

The invention relates to a dust fall device, in particular to an energy-saving water sprinkling and dust fall device for tunnel construction. The energy-saving water sprinkling and dust fall device for the tunnel construction can carry out dust fall from a high place and can improve the dust fall range. The energy-saving water sprinkling and dust fall device for the tunnel construction comprises abottom plate, wheels, pushing hands, a water tank, a connecting plate, first belt wheels, a first bearing seat, a first rotating shaft and the like. The wheels are rotatably connected to the bottom of the bottom plate, the pushing hands are connected to the right side of the top of the bottom plate, the water tank is connected to the right side of the top of the bottom plate on the left side of the pushing hands, the connecting plate is connected below the left side face of the water tank, and the first bearing seat is installed on the left side of the connecting plate. According to the energy-saving water sprinkling and dust fall device, the pushing hands are pushed by people to drive the wheels to move, the first rotating shaft is driven to rotate under matching of the first belt wheelsand a second belt wheel, then a disk is rotated and a piston is driven to move up and down through up-down moving of a first connecting rod and a second connecting rod, so that water in the water tank enters a compression cylinder and is sprinkled out to carry out dust fall.

The invention discloses a wet-type concrete spraying process and belongs to concrete spraying processes. According to the wet-type concrete spraying process, cement and gravel are conveyed to a spray gun respectively in two branches; after the gravel and a powdery accelerating agent are proportionally mixed and stirred through a stirring mechanism, one branch enters a conveying mechanism, and the gravel is conveyed to the spray gun; after the cement and water are proportionally mixed and stirred through a mixing and stirring mechanism, the other branch is conveyed to the spray gun through a grout conveying pump; after being mixed in the spray gun, the two branches are sprayed to a spray-receiving face through the spray gun. According to the technical scheme, the process can achieve the purposes of falling dust and being slight in springback, change the status quo that a liquid accelerating agent must be used in a traditional wet spraying process, reduce additive cost in wet spraying construction, and guarantee material conveying distances. The process can be widely applied to grout spraying construction in the various industries of coal mine, water and electricity, tunnels, municipal engineering and the like.

The invention discloses a grinding machine convenient to use. The grinding machine comprises a grinding machine body; grinding wheels are mounted at the two ends of the grinding machine body; a protection cover fixed to the grinding machine body is arranged outside the grinding wheels; first sleeves are fixed to the two sides of the lower end of the grinding machine body; vertical rods are inserted into the lower ends of the first sleeves; a cabinet body is fixed to the lower end of each vertical rod; cushioning springs arranged on the vertical rods in a sleeving mode are arranged between thefirst sleeves and the cabinet bodies; a vertical plate fixed to the cabinet bodies is arranged between the two vertical rods; a first gear is rotationally connected to the front surface of the vertical plate; a hand wheel is fixed to the front surface of the first gear; a connecting plate fixed to the vertical plate is arranged on one side of the first gear; a bolt penetrates through the connecting plate and is in threaded connection with the connecting plate; a rack is fixed to the side end of one of the first sleeves; the first gear meshes with the rack; the end, opposite to the first gear,of the bolt is in a conical shape, and the diameter of the end is smaller than the tooth pitch of the first gear; a transverse shaft is fixed to the side end of the protection cover; and the transverse shaft is sleeved with a second sleeve. The grinding machine is safe, labor-saving and convenient to use.

The invention discloses multiple damping protection type medium adsorption type decoration engineering material crushing equipment. The equipment comprises a top anti-ejection type crushing assembly, an embedded damping shock absorption screening assembly, an impact type medium adsorption type dust suppression and collection assembly and a lifting and conveying assembly. The invention belongs to the technical field of building material decoration, and particularly relates to multiple damping protection type medium adsorption type decoration engineering material crushing equipment which is high in reliability, environmentally friendly and wide in application range. The buffering and damping effects of the buffering movable plate are improved through repulsive force between the first permanent magnet and the second permanent magnet, flexible blocking of splashing fragments is achieved in the brittle decoration material crushing process under the condition that no driving unit or sensor exists, the materials are rapidly crushed, meanwhile, the splashing fragments are prevented from damaging equipment, and the service life of the equipment is prolonged. And workers are accidentally injured.

The invention discloses a disinfection and fire protection integrated system. A remote control module, a disinfection box and a fire extinguishing box are included. A 1# control system, an ultrasonicatomizer, a disinfectant storage tank, a 1# electromagnetic valve, a mist storage bin and a pressurizing conveying bin are arranged in the disinfection box. A 1# liquid level sensor is arranged in thedisinfectant storage tank. A 1# liquid level scale strip is arranged on the side edge of the disinfectant storage tank. An outer panel of the disinfection box is provided with a disinfection one-keystart button and a disinfection emergency stop button. A 2# control system, a water pump, a fire extinguishing agent storage tank and a 2# electromagnetic valve are arranged in the fire extinguishingbox. A 2# liquid level sensor is arranged in the fire extinguishing agent storage tank, and the side edge of the fire extinguishing agent storage tank is provided with a 2# liquid level scale strip. The disinfection and fire protection integrated system is convenient to install and simple in operation, disinfection, epidemic prevention, fire disaster extinguishing, dust fall, cleaning and the likecan be comprehensively conducted on a public transport cabin, operation is simple, and practicability is very high.

The invention discloses a dust settling device for building construction of houses. The device comprises a water tank and a water injection pipe installed on the side wall of the water tank, wherein a moving part is installed at the bottom of the water tank, a rotating disc is rotationally connected to the top of the water tank, symmetrically-arranged supporting frames are installed at the top of the rotating disc, and the same gun barrel is arranged between and rotationally connected the two supporting frames. The device is simple in structure; a water pump pumps water from the water tank to spray water from a water outlet pipe, the water is atomized under the action of an atomizing nozzle, and at the moment, the wind power of a draught fan blows atomized water vapor to a farther position and the water vapor is combined with dust in air, so the dust falls down and dust settling is achieved; a servo motor drives a driving disc to rotate, an eccentric shaft moves in a concentric-square-shaped frame, and reciprocating movement of a rack is achieved, so the rotating disc is driven to do reciprocating rotation and the spraying range of the gun barrel is expanded; and a driving air bag and a driven air bag are matched with each other, so the inclination angle of the gun barrel is driven to change, the spraying range of the gun barrel is further expanded, and therefore, dust settling efficiency is improved.

The invention discloses a special environment-friendly slag and ash removal agent for a biomass boiler. The special environment-friendly slag and ash removal agent for the biomass boiler is characterized by being formed by emulsification dispersion of components in percentage by weight as follows: 20-30% of citric acid, 20-35% of aluminium nitrate, 2-3% of basic nickel carbonate, 5-10% of rare earth chloride, 1-2% of dolomite powder, 10-15% of positive bentonite, 8-10% of fluorite powder, 0.5-2% of a modulating agent, 5-7% of an emulsifying agent and the balance of water. The agent can reduce the adhesive capacity of acidic slag and enables the acidic slag to be hardened and embrittled to fall off under the scouring action of flue gas; the positive bentonite is added to raw materials, can adsorb a large quantity of potassium and sodium metal ions produced during combustion and can reduce the content of alkali metal in the flue gas; the aluminium nitrate and the dolomite powder can have chemical reactions with fly ash under the systematic catalytic action of the rare earth chloride, double salt slag capable with the high ash-melting point is produced through combination, the concentration of the fly ash in the flue gas can be greatly reduced, and the deposited ash is reduced.

The invention belongs to the technical field of building equipment, and aims to solve the problems that time and labor are wasted and the dust falling efficiency and the dust falling effect are very poor due to the fact that water spraying equipment needs to be manually carried to spray water on a construction site at present to achieve the dust falling effect, and particularly relates to environment-friendly building construction dust falling equipment which comprises a dust falling equipment box. A dust removal box is installed on the top of the dust falling equipment box, an efficient dust suction assembly is installed on the dust removal box, and a secondary dust removal assembly is installed in the dust falling equipment box. Solar energy is converted into electric energy through the solar power generation panel, the storage battery stores the electric energy and supplies the electric energy to equipment, the energy-saving and environment-friendly effects are achieved, multi-direction dust collection, dust gas conveying, secondary dust removal and watering dust falling are achieved through a single-motor regulation and control mode, the effects of saving energy and reducing the equipment cost and the operation cost are achieved, and the energy-saving and environment-friendly effects are achieved. And in addition, it is guaranteed that all dust falling operations are conducted synchronously, and the dust falling effect and the dust falling efficiency are remarkably improved.

The invention provides a ventilation system for a coal mine and a control method thereof, and relates to the technical field of mine ventilation. The ventilation system comprises a main fan device, a storage device, an auxiliary fan device and a detection terminal, wherein the main fan device is used for purifying air, conveying the purified air into the mine and carrying out gas recovery treatment at the same time; the storage device is used for storing liquefied carbon dioxide and converting the liquefied carbon dioxide into carbon dioxide gas for fire extinguishing; the auxiliary fan device is used for conveying the purified air into each branch mine and detecting the air speed and the air volume of ventilation in the mine; and the detection terminal is used for detecting the temperature, the fire disaster and the gas concentration in each branch mine. According to the ventilation system for the coal mine and the control method thereof, air purification, dust falling and cooling can be realized through an air purification device, a negative ion generator and an atomizer, independent environment detection of each mine can be realized through an air speed sensor, an air volume sensor, a temperature sensor and a gas concentration sensor, fire extinguishing can be realized through a photoelectric smoke sensor and a carbon dioxide liquefaction storage tank, and gas recovery can be realized through a gas recovery device.

The invention discloses a sweeping roller structure for road maintenance and a sweeper. The sweeping roller structure comprises a cleaning roller body with a plurality of arc-shaped grooves formed inthe circumferential surface at equal intervals. The cleaning roller body is fixedly installed on a transmission roller. The transmission roller is in the shape of a stepped hollow shaft; the cleaningroller body is mounted at the maximum diameter of the transmission roller; a plurality of drainage holes pointing to the interior of the transmission roller are formed in the circumferential portion,except for the arc-shaped grooves, of the cleaning roller body, brush installation plates are movably installed in the arc-shaped grooves of the cleaning roller body through screws, and a plurality ofbrushes are installed on the brush installation plates. According to the sweeping roller, the brushes can be replaced at will, and the situation that after the brushes make contact with the ground for a long time, the brushes fall excessively, and consequently sweeping quality is reduced is prevented.

The invention discloses a solar street lamp with a deinsectization function for gardens, and belongs to the technical field of solar street lamps. The solar street lamp comprises a lamp post, a positioning mechanism is arranged in the lamp post, lamp poles are fixedly connected to the left and right side surfaces of the lamp post, one end of each lamp pole is fixedly connected with one end of thepositioning mechanism, and the other end of each lamp pole is fixedly connected with a fixing rod. According to the invention, an insect trapping lamp is arranged and can trap winged insects to enablethe winged insects to get close to an insect sticking mechanism, the insect sticking mechanism and a scraping rod are arranged, an insect sticking film is coated with a large amount of mucilage glue,the mucilage glue can effectively stick the winged insects, and if a large amount of winged insects stick to the insect sticking film and the insect sticking film cannot continue to stick, a motor iscontrolled to work to drive a first gear to rotate, the first gear drives a second gear to rotate, a sponge mat adsorbs the glue solution and overflows, the glue solution can be evenly smeared on theouter side of the insect sticking film, at the moment, the insect sticking film is updated, winged insects can continue to be stuck, treatment on the winged insects cannot be affected, and the influence of the winged insects on the street lamp is reduced.

The invention relates to a concrete plant spraying and dust falling system which comprises a water conveying pipe.The water conveying pipe is communicated with a water guide pipe, the side wall of the water guide pipe is provided with a plurality of water guide holes, the water guide holes are distributed in the axial direction of the water guide pipe, each water guide hole is communicated with a spraying pipe, the spraying pipe is communicated with a plurality of spraying heads, a water retaining sleeve is arranged in the water guide pipe in the axial direction of the water guide pipe in a sliding mode, the water retaining sleeve is communicated with the water conveying pipe, a water through hole used for being communicated with the water guide hole is formed in the side wall of the water retaining sleeve, and a first driving piece used for driving the water retaining sleeve to slide is arranged on the water guide pipe. The system has the effect of independently spraying a certain area.

The invention discloses a spray type dust fall device. The spray type dust fall device comprises a water storage device, a water pump, a rotary device and a spraying device. A water outlet of the water storage device is connected with a water inlet of the water pump. A water outlet of the water pump is connected with a water inlet of the spraying device. The water pressure at the water outlet of the water pump ranges from 4MPa to 15MPa. The spraying device comprises a spray head body, a short-range spray nozzle and a remote spray nozzle. The short-range spray nozzle and the remote spray nozzleare fixed to the front end of the spray head body from top to bottom in sequence. The rotary device is in rigid connection with the spray head body and is used to enable the front end of the spray head body to horizontally rotate clockwise or anticlockwise. According to the spray type dust fall device, because the water storage device, the water pump, an action mechanism and the spraying device are used in cooperation, sprayed water mist is uniform in mist droplets, large in density and broad in coverage area; and the spray type dust fall device is especially suitable for water mist spray ofa wide range.

The invention discloses a negative pressure dust fall fresh air system for a hatchling room. The negative pressure dust fall fresh air system for the hatchling room comprises a dust fall system for atomizing and spraying the interior of the hatchling room and an air exhaust system for adjusting the pressure intensity in the hatchling room, wherein the air exhaust system comprises an air exhaust fan for driving one or more hatchling machines installed in the hatchling room to update air and maintain the pressure intensity in the hatchling room, and a controller for driving and adjusting the rotating speed of the air exhaust fan; and the controller is connected with a PLC logic editor used for editing and setting control logic of the controller, and a pressure sensor arranged in the hatchling room and used for collecting air pressure intensity in the hatchling room and transmitting the air pressure intensity to the controller. According to the negative pressure dust fall fresh air systemfor the hatchling room, the negative pressure value can be set according to the batch of hatching eggs in the hatchling room and the actual requirement, accurate control is realized, and the adjustment of the negative pressure value in the hatchling room can be realized according to the hatching of a plurality of hatchling machines and different batches.

The invention provides a novel building dump truck hopper capable of reducing dust. The novel building dump truck hopper comprises an L-shaped truck frame and a truck hopper body arranged on the truckframe, a fixing mechanism used for fixing the truck hopper body is arranged on the truck frame, a sliding groove is formed in the side face of the horizontal portion of the truck frame, the two sidesof the truck hopper body are each fixedly connected with two connecting sliding blocks, the connecting sliding blocks are slidably connected into the sliding groove, a water storage piston barrel located between the two connecting sliding blocks is fixed into the sliding groove, a water inlet pipe and a water outlet pipe are connected with the water storage piston barrel, a valve is arranged on the water outlet pipe, a piston rod is arranged at the end, close to the front side, of the water storage piston barrel, the connecting sliding block on the front side is connected with a first spring,and the other end of the first spring is connected with the piston rod. Spraying can be carried out while discharging is carried out, so that striking and flying of dust are effectively reduced, dustgenerated by discharging is effectively controlled, and the effects of dust reducing and environmental protection are achieved.

The invention discloses a recycling system and recycling method of renewable resources. The recycling system of the renewable resources comprises an intelligent remote centralized control system, wherein a database for monitoring various modules is arranged in the intelligent remote centralized control system, and the intelligent remote centralized control system realizes bidirectional connectionwith a rubber particle powder manufacturing module, an automatic conveying and metering pretreatment module, a normal pressure continuous regeneration module, an efficient multi-screw post-processingmodule, a rubber filter forming and automatic stacking module and a tail gas treatment module correspondingly; and the output end of the rubber particle powder manufacturing module is electrically connected with the input end of the automatic conveying and metering pretreatment module. The invention relates to the technical field of the renewable resources. According to the recycling system and recycling method of the renewable resources, no waste water and waste gas discharge in the whole line is realized by adopting a novel environment-friendly formula system and combining closed continuousproduction equipment through a normal pressure medium temperature production process, so that the environmental protection of a production device is improved.

The invention discloses a sprinkling system. By making full use of the structural features of near-edge protective railings on the both sides of a temporary road on a construction site and around a building, horizontal poles of the near-edge protective railings are used as water pipes for supplying water to sprinkling heads and atomizing nozzles at the tops of all sprinkling branch pipes, as the horizontal poles of the near-edge protective railings are also used as the water pipes, comprehensive dust falling for the entire construction site can be achieved, raise dust on the construction sitecan be reduced and controlled within the very short time, valuable water resources can be obviously saved, labor force is saved, and the good economic and social benefits are achieved.

The invention discloses a foundation punching device for a construction site. The foundation punching device comprises a first servo motor, a frame body and a rotating rod. One end of the frame body is movably connected with the rotating rod. The bottom end of a second servo motor is fixedly connected with a drill bit. The other end of the frame body is provided with a dust reduction mechanism. The dust reduction mechanism comprises a nozzle, a pipeline, a water pump, a water tank and a water inlet. One side of the pipeline extends to one side of the frame body. Stabilizing structures are arranged on both sides of the dust reduction mechanism. According to the foundation punching device for the construction site, due to the arrangement of the dust reduction mechanism, water in the water tank can be pumped out by starting the water pump and is then sprayed to punched positions through the pipeline and the nozzle so as to reduce dust generated during punching, the environment is effectively protected, pollution is reduced, and meanwhile, the sprayed water can diminish heat generated by long-time operation of a drill bit, and the service life of the drill bit is effectively prolonged.

The invention relates to the technical field of sand production, in particular to a dust suppression system and a dust suppression method. The dust suppression system comprises an encapsulation device, a water pump, spraying pipes, a water supply pipe, control valves and spray nozzles, wherein the encapsulation device is used for encapsulating a plurality of production devices on a sand productionline to form corresponding encapsulation units; the spray nozzles are arranged on each spraying pipe and are used for spraying dust produced by the sand production process; each spraying pipe is arranged on the corresponding encapsulation unit; one end of the water supply pipe is connected with the water pump; the other end of the water supply pipe is communicated with the spraying pipes on the encapsulation units; the control valves are arranged on the water supply pipe and are used for adjusting water spraying amounts of the spray nozzles. According to the dust suppression system disclosedby the invention, by encapsulating processing equipment and arranging the spraying pipes, dust and noises of the sand production line are controlled, and the influence on surrounding environment is reduced. The invention also provides the dust suppression method. By use of the dust suppression method, the effects of saving water, suppressing dust and reducing noise are realized.

The invention provides a municipal road traffic control device with an air purification function, relates to the technical field of traffic auxiliary devices, and solves the problem that air suction purification cannot be realized while traffic control is realized through structural improvement. Through structural improvement, the purpose of traffic control is achieved, and meanwhile spraying anddust falling are achieved in a linkage mode; and the problem that the limiting rod is easily broken due to over-high vehicles is solved. The municipal road traffic control device with an air purification function comprises a shock absorption seat structure. The damping seat structure is fixed on the ground; the filtering seat is also fixed on the ground, a purifying structure is mounted in the filtering seat, and a water squeezing structure is mounted on the purifying structure. Due to the fact that a piece of filter cotton adheres to the position of the vent hole in the water storage box andmakes contact with the scraping block, the right end face of the scraping block is of an inclined structure, water squeezing of the filter cotton can be achieved when the scraping block moves leftwards, and the scraping block with the right end face of the inclined structure is smoother when the filter cotton is squeezed to drain water.

The invention discloses a construction waste transportation system attached to a building body, and relates to the technical field of construction waste transportation equipment. The construction waste transportation system attached to the building body comprises a construction wall body and a waste passage; a plurality of feeding ports are formed between the waste passage and the construction wall body; sealing plates are fixedly mounted on the two sides of the waste passage; buffering plates are symmetrically arranged on the two sides of the waste passage; the buffering plates are fixedly connected with rubber plates; damping pieces are arranged between the buffering plates and the sealing plates; a slag outlet is formed in the garbage passage and the bottom of the building wall; and a water tank is arranged on the side wall of the building wall. When the rubber plates and the buffering plates on the left and right sides are subject to an outside acting force, the buffering plate pushes limiting seats to move up and down in buffering grooves in the vertical direction through a buffering column, vibration reduction pieces and buffering seats; the limiting seats extrude buffer springs to stretch and contract, telescopic springs convert external acting force into elastic force, and therefore, the vibration reduction effect is achieved, and noise is reduced; as spray heads spraywater into the slag outlet, dust falling of garbage is achieved.

The invention discloses a multi-stage dust removal system for earth pressure / open dual-mode shield construction, and the problem of much dust in a 6m class earth pressure / open dual-mode shield or a hard rock TBM tunnel in the prior art is solved. The multi-stage dust removal system for the earth pressure / open dual-mode shield construction includes a spray dust removal system at a front dust risingplace, a dust dispersing route dust falling system and a duct dust collection system at a rear dust rising place which are successively arranged in a shield tunneling machine; the spray dust removalsystem at the front dust raising place includes a first spray dust removal device arranged on a soil bin partition plate; the dust dispersing route dust falling system includes a dust removal and cooling device and a second spray dust removal device, the dust removal and cooling device is arranged at the portion of a center hob, and the second spray dust removal device is arranged at a slag discharge opening of a drive box; and a dust collection position of the duct dust collection system at the rear dust rising place corresponds to a main machine belt conveyor According to the multi-stage dust removal system for the earth pressure / open dual-mode shield construction, the dust amount is reduced from the dust rising places, dust transmission in the dust transmission process is prevented andreduced, suspended dust is sucked from a dust outlet, multi-stage blocking and dust reduction are achieved, dust removal efficiency is improved, and dust content in a tunnel is lowered.

The invention discloses an agricultural equipment dustproof device, and particularly relates to the field of agricultural equipment foundation. The agricultural equipment dustproof device comprises a dust falling pipe, one side of the interior of the dust falling pipe is fixedly connected to a second filter screen, one side of the second filter screen is fixedly connected to a motor, one end of the motor extends to be provided with a first rotating shaft, a fan is fixedly connected to the cylindrical outer surface of the first rotating shaft, a first gear is fixedly connected to one end of the first rotating shaft, a second gear meshes with one side of the first gear, a second rotating shaft is fixedly connected to the interior of the second gear, a second connecting rod is rotatably connected to one end of the second gear, the second connecting rod is rotationally connected to the second rotating shaft, and a cleaning wheel is fixedly connected to one side of the second rotating shaft, so that the second gear rotates around the first gear while rotating through the meshing effect of the gear, and the second gear drives the second rotating shaft to drive the cleaning wheel to rotate to clean the inner wall of the dust falling pipe.

The invention relates to the technical field of glass fiber production, in particular to an environment-friendly glass fiber production line. The production line comprises a spiral discharging machine, a scraping mechanism is arranged on the inner wall of a screening box, two recovering frames are symmetrically and fixedly installed on the inner walls of the two sides of the screening box, two recovering pipes are symmetrically installed on the outer wall of the screening box, a screen is jointly and fixedly installed between the two recovering frames, an auxiliary screening mechanism is arranged in the screening box, a reciprocating lead screw is rotationally installed in the screening box, two dust removing pipes are connected between a crushing box and the screening box, and a one-way dust conveying mechanism is arranged among the dust removing pipes and a first motor. A grinding roller is additionally arranged to grind raw materials, so that the crushing degree is improved; the adhering raw materials are scraped away through a scraping plate, and meanwhile, the screen is additionally arranged to filter out large particles, so that the production efficiency and quality are improved; flying dust in the crushing box is conveyed into the screening box through the dust removing pipes, dust falling is achieved, and the utilization rate of the raw materials is also increased.

The invention provides a nozzle capable of intelligently improving suction force in an ascending pipe. The nozzle is connected to one end of a bridge pipe through threads, the outlet pressure P2 of the nozzle is obtained through a specific formula by measuring the inlet pressure P1 of ammonia water entering the bridge pipe and the throat diameter d2 of the nozzle, and according to the requirementfor the pressure value needed by customers, based on the condition that the unit volume flow, the fluid medium density and the inlet diameter are not changed, the requirements of customers for the pressure value of the outlet end of the nozzle are met by measuring and adjusting the technological parameters of the inlet pressure value and the throat diameter of the nozzle. Meanwhile, the inventionfurther provides a specific structure of the nozzle. The nozzle can enable a gas collecting pipe to fully suck raw gas by utilizing negative pressure when coal is charged into a carbonization chamberafter the negative pressure in the ascending pipe reaches the negative pressure required by the process, so that the dissipation of the raw gas is reduced, and the effects of dust reduction and dust removal are achieved.