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37results about How to "Avoid dust pollution" patented technology

Coal mine wet method guniting process

InactiveCN103244148AContinuously adjustable particle size distributionRegular shapeUnderground chambersTunnel liningFiberDry mixing
The invention provides a coal mine wet method guniting process and belongs to the technical field of coal mine wet method guniting. The coal mine wet method guniting process comprises the following steps of 1.1 manufacturing mixed dry materials, namely performing dry mixing of a sand and stone mixed material, cement, coal ash, a water reducing agent, fiber and an accelerator to form the mixed dry materials; 1.2 performing dry material transportation, namely transporting the mixed dry materials to a guniting working face under a coal mine; 1.3 manufacturing wet slurry, namely pouring the mixed dry materials into a stirring, conveying and guniting integrated machine and simultaneously adding water to perform stirring to form evenly-mixed wet slurry; 1.4 performing guniting operation, namely utilizing a plunger type wet spraying machine (11) to perform continuous and quick guniting operation to the working face needing guniting; and 1.5 cleaning a pipeline, namely cleaning the guniting pipeline of the plunger type wet spraying machine (11), keeping the pipeline to be clean and preventing blockage. By means of the coal mine wet method guniting process, dry mixing, conveying, stirring, guniting and other processes are tightly combined integrally, the processes are compact, manpower is saved, the efficiency is improved, guniting materials are even and consistent in proportion, and the guniting effect is remarkable.
Owner:ZIBO MINING GRP

Softening device for treating high-hardness, low-alkalinity salt-containing wastewater

The invention relates to a softening device for treating high-hardness, low-alkalinity salt-containing wastewater and belongs to the field of water treatment in environmental protection. A settling tank and a water-production tank are arranged on a tank body pedestal of the softening device, an inverted stirrer is arranged in the settling tank, a water outlet weir is arranged above the settling tank, a mixing reaction zone and a settling zone are sequentially arranged at the upper part and a lower part of the settling tank, microporous aeration pipes are arranged at the upper part of the settling zone and are communicated by virtue of gas inlet pipes; and water distributors are arranged in the middle of the settling zone and are communicated with water inlet pipes, pipeline mixers are arranged on the water inlet pipes, and chemical agent adding pipes are arranged on the pipeline mixers. According to the softening device, by adding carbon dioxide and caustic soda into the wastewater, chemical agent addition, gas distribution, stirring and reaction are performed in the softening device so that carbon dioxide and caustic soda and calcium and magnesium ions in water are reacted to achieve the removal of water hardness, the utilization efficiency is increased, the dust pollution is avoided, the energy consumption is decreased, the chemical agent cost is saved, the removal rate of the hardness is very high and the reaction is completely performed.
Owner:INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH

Intelligent, green and environmental-friendly integrated building structure

The invention discloses an intelligent, green and environmental-friendly integrated building structure. The intelligent, green and environmental-friendly integrated building structure comprises two partition wall plates, wherein a same first clamping plate is arranged on the two partition wall plates through clamping, a plurality of mobile grooves are formed in one side of the first clamping plateat an equal distance, a mobile plate is connected with inner walls of the mobile grooves in a sliding way, one side of the mobile plate extends to an outer side of the first clamping plate and is arranged between the two partition wall plates, a screw rod is in threaded connection with one side of the mobile plate, a same second clamping plate is arranged at the other sides of the two partition wall plates in a clamping way, and a plurality of installation holes are formed in the second clamping plate at an equal distance. The intelligent, green and environmental-friendly integrated buildingstructure is simple to operate, the screw rod and a nut are connected, thus, the two partition wall plates can be spliced by the first clamping plate and the second clamping plate, a traditional brickwall body can be substituted, and the problem of dust pollution is prevented; and meanwhile, building waste can be effectively reduced, the intelligent, green and environmental-friendly integrated building structure is convenient to disassemble and recycle, and the manufacturing cost is effectively reduced.
Owner:ARCHITECTURAL DESIGN & RES INST OF TSINGHUA UNIV +2

Drilling device for sand cleaning and sand cleaning method

The invention provides a novel sand removing method and device. The device comprises a drilling device for sand cleaning and a dust collecting system based on the rotating cutting and crushing principle and the Bernoulli principle. The drilling device mainly comprises a drill bit, a rotating rod and a three-way communicating pipe, wherein the drill bit is connected with the rotating rod, and the rotating rod is used for exerting rotating cutting force on the drill bit to which the drill bit belongs; and the rotating rod connected with the drill bit sleeves the dust suction end of the three-waycommunicating pipe, and the rotating rod is provided with a gap in the dust collecting end of the three-way communicating pipe, so that dust can be prevented from passing through the dust collectingend; the rotating rod is connected with a power source, and the rotating power is provided; and the end a in the other two ends of the three-way communicating pipe is an air inlet end, and the end b is an air outlet end; and a negative pressure is formed at the dust suction end of the three-way communicating pipe when the gas flows from the air inlet end to the air outlet end at a high speed, andthe dust generated by rotary cutting of the dust suction end drill bit is sucked into and enters the dust collecting system from the air outlet end in the flowing direction of the gas. The method aimsto solve the problem of difficulty in sand cleaning in the existing casting production post-treatment process, dust pollution, high noise pollution and the like are solved; and a new method is provided for solving the problems of large dust pollution, large noise pollution and the like.
Owner:SHANGHAI SPACE PRECISION MACHINERY RES INST

Handheld dust-free drilling device for plate processing

The invention relates to the technical field of plate processing, and discloses a handheld dust-free drilling device for plate processing. The device comprises a device body, a main handle, a switch,a metal nose, and a drilling rod. Three groups of connecting grooves are equidistantly and inwardly formed in the edge of the left side wall of the metal nose; a group of dust absorption sleeves whcihare of a columnar structure are installed jointly on the left sides of connecting columns; through holes are formed in the left side central positions of the dust absorption sleeves and are used forthe drilling rod to penetrate; a circle of driving teeth is fixedly installed on the right part of the outer side surface of the curved surface of a transmission shaft; two groups of horizontal movingrods are rotatably connected with the upper parts and the lower parts of the right side walls inside the dust absorption sleeves; driven teeth which are engaged with the driving teeth are fixedly arranged on a transmission rod positioned at the same vertical positions as the driving teeth; fans are fixedly installed at the left end of the transmission rods; three groups of pump bodies are equidistantly and fixedly installed on the outer side surface of a rotating shaft positioned on the left sides of the driving teeth; and inclined atomization nozzles communicate with the tail ends of the pump bodies. The device has the advantages of dust-free drilling, safety and reliability, and convenient disassembly.
Owner:陈二凤

Chemical pretreatment method and device thereof for treating high-salinity wastewater

The invention discloses a chemical pretreatment method and a device thereof for treating high-salinity wastewater and belongs to water treatment technologies. The device comprises an adjusting tank, a pipeline mixer, a sedimentation tank, a V-shaped filter tank and ion exchange resin. The method comprises the following steps: adjusting the high-salinity wastewater in the adjusting tank; mixing the wastewater with sodium hydroxide and carbon dioxide in the pipeline mixer, and then putting the mixture into the sedimentation tank; after reacting for a certain period of time, removing solid suspended matters, hard substances and part of COD (chemical oxygen demand) pollutants from water by virtue of high-efficiency flocculation and sedimentation, and leading a supernatant into the V-shaped filter tank; and putting the high-salinity wastewater obtained after filtration in the V-shaped filter tank into an ion exchange resin softening system, and performing further softening treatment on the high-salinity wastewater. According to the technology, the combination of carbon dioxide and sodium hydroxide is adopted to ensure a good hardness removal effect, reduces the surrounding dust pollution to the utmost extent, and greatly reduces the cost of chemicals.
Owner:INNER MONGOLIA JIUKE KANGRUI ENVIRONMENTAL TECH

Centralized optical fiber end grinding and cleaning device

The invention relates to a centralized optical fiber end grinding and cleaning device which comprises a circulating water tank and a grinding chamber. The circulating water tank is communicated with the grinding chamber through a circulating pump, the grinding chamber comprises a grinding groove, an optical fiber positioning frame, a driving water wheel, at least one grinding roller and a driving device, wherein the cross section of the grinding groove is in a shape of a Chinese character 'ao', the driving water wheel is located at the bottom of the grinding groove, the grinding roller is located in the grinding groove and located under the circulating water level, the optical fiber positioning frame is embedded into the upper end face of the grinding groove, at least four optical fiber positioning holes are distributed in the optical fiber positioning frame in a rectangular array mode, optical fiber positioning clamps are additionally arranged at the positions of the optical fiber positioning holes, and the driving device is located outside the grinding grooves and is connected with the driving water wheel and the grinding rollers respectively. In addition, the centralized optical fiber end grinding and cleaning device has grinding and cleaning functions, the surface cleanness and finish degree of optical fiber ends can be greatly improved, noise and dust pollution easily caused in the optical fiber end grinding process is effectively avoided, and optical fiber machining operation environment is greatly improved.
Owner:南通鸿图健康科技有限公司

Special Y-cone granulating machine for ceramic/metal powder

The invention discloses a special Y-cone granulating machine for ceramic/metal powder. The upper end part of a stander is provided with a gear box body, a double-cone cavity body, a heating charging barrel and a pelletizing assembly; the front end part of the heating charging barrel is provided with an extrusion head; the double-cone cavity body comprises a double-cone groove body and a groove body supporting seat, a double-cone extrusion feeding chamber is formed in the double-cone groove body, the upper end part of the double-cone groove body is provided with a feeding hopper, the upper endpart of the groove body supporting seat is fixed with the lower end part of the double-cone cavity body by thread mounting, and a melt glue extrusion chamber is arranged inside the heating charging barrel; a main screw rod driven by a main motor and an auxiliary screw rod driven by the a gear box are arranged in the double-cone chamber, and the main screw rod and the auxiliary screw rod forms an angle to form a double-cone extrusion feeding structure; and a main screw rod extension part is embedded into the heating charging barrel. By adopting the structure design, the special Y-cone granulating machine has the advantages of novel design, high automation degree and high working efficiency, and can effectively relieve the dust pollution in the working environment.
Owner:DONGGUAN CITY CHANGFENG MECHANICAL TECH CO LTD

Coal cinder treatment equipment for cement preparation and cement preparation method

The invention relates to the technical field of coal cinder treatment devices, and discloses coal cinder treatment equipment for cement preparation and a cement preparation method, driven gears are driven to rotate through a driving gear, so that the two meshed driven gears drive a crushing roller to rotate, and coal cinder is fully crushed through the arrangement of a plurality of meshed crushing teeth and interaction teeth; by arranging a dust collection motor, a dust collection fan rotates, dust generated by the coal cinder is sucked into a dust collection pipe through dust collection holes and the like, and the dust is conveyed into a water tank for liquid filtration treatment, so that the dust generated when the coal cinder is crushed can be effectively treated; according to the coal cinder crushing device, dust raising pollution caused by a traditional mode is avoided, through arrangement of an electric sliding block and the like, crushed coal cinder in the flattening box is further ground and refined, discharging is completed through a plurality of discharging holes till the requirement for the caliber of the discharging holes is met, the coal cinder crushing effect is further improved, and the fineness of raw materials needed for mixed cement manufacturing is guaranteed.
Owner:周洪住

Nozzle structure for spraying concrete

The invention discloses a nozzle structure for spraying concrete and belongs to the technical field of nozzles. The nozzle structure is characterized by comprising a first mixing pipe, a second mixingpipe and a spraying pipe which are sequentially connected with a concrete conveying pipe, wherein a plurality of first through holes for introducing an accelerator and air into the pipe are formed ina lateral wall of the first mixing pipe, a drainage plate corresponding to the plurality of first through holes is arranged in the first mixing pipe, a through hole unit which is circumferentially distributed is arranged on the drainage plate, the through hole unit comprises a second through hole extending from the outer side of the upper surface of the drainage plate to the inner side of the lower surface of the drainage plate and a third through hole extending from the inner side of the upper surface of the drainage plate to the outer side of the lower surface of the drainage plate, and thesecond through hole and the third through hole are distributed in a cross mode and are respectively and independently arranged. The nozzle structure disclosed by the invention has the characteristicsthat an inner layer and an outer layer of concrete in the pipe can both contact the accelerant and water, the concrete can be mixed more fully and evenly, and a resilience value of spraying concreteis reduced.
Owner:衡阳泰源商砼有限公司

Anti-jamming anhydrous soil removing machine for lumps

PendingCN112676225ATo accommodatePlay a twistCleaning using toolsSoil scienceAgricultural engineering
The invention discloses an anti-jamming anhydrous soil removing machine for lumps. The anti-jamming anhydrous soil removing machine comprises a soil removing tank arranged on a rack, wherein a row of soil scraping rollers are uniformly arranged in the soil removing tank at intervals; the axes of the soil scraping rollers are located on the same plane, the plane is obliquely arranged in a front-low and back-high mode, and a separation strip is arranged between every two adjacent soil scraping rollers; a power device for soil scraping is arranged on the rack, the power device for soil scraping drives the soil scraping rollers to rotate through a transmission mechanism for soil scraping, and the rack or the soil removing tank is connected with a material driving mechanism; and a plurality of closed-loop corrugated grooves are uniformly formed in the circumferential faces of the soil scraping rollers in the axial direction of the soil scraping rollers at intervals. According to the anti-jamming anhydrous soil removing machine for the lumps, blocky materials do not need to be dried, washed with water and transported out of a mine field, so that the separation efficiency is improved, the energy consumption and the separation cost are reduced, and the negative influence of separation on environmental protection is greatly reduced; and jamming does not occur in work, so that the effects of reducing the cost and increasing the efficiency are achieved for enterprises, and the anti-jamming anhydrous soil removing machine has positive environmental protection significance for preventing soil depletion of the mine field, protecting the environment and the like.
Owner:ZHENGZHOU GOYOD RESOURCES NEW TECH CO LTD

Carving machine with scrap collection device

The invention discloses a carving machine with a scrap collection device. The carving machine comprises a body seat. A sealing door is rotationally connected to the front surface of the body seat through hinges. A fixed plate is welded to the top of the body seat. Two symmetric vertical rods are in sliding connection between the two side walls, in the length direction, of the fixed plate, and a cross beam is welded between the two vertical rods. A limiting rod is welded to the front surface of the cross beam. A fixed seat is in sliding connection to the limiting rod. A carving machine head isfixed to the fixed seat through a bolt. An internal thread sleeve pipe is welded to the position, located above the carving machine head, of the fixed seat. A lead screw is arranged in the internal thread sleeve pipe in a penetrating manner. In the carving machine, a dust collection hood is embedded din the fixed plate and is connected with a dust collection box through a guide pipe, an air suction fan is fixed in the guide pipe, scraps generated by carving of the carving machine head can be sucked by a dust suction hood through suction force generated by the air suction fan to be collected and stored in the dust collection box, and therefore the environment is effectively protected, and dust pollution is avoided.
Owner:CHENGDU YANXINGGUO TECH CO LTD

Marble slab continuous and uniform grinding equipment and method

The invention discloses marble slab continuous and uniform grinding equipment which comprises an operation rack. A fixed rack is installed at the top of the operation rack; a cooling water spray headis installed on the fixed rack; a cooling water storage tank is installed on one side of the operation rack; the interior of the cooling water storage tank is connected with a driving water pump through a water guide pipe; a main water supply pipe is installed at one end of the driving water pump; sliding blocks are installed on the surface of a lead screw body; a fixed rack is installed between sliding blocks; a control box is installed on the fixed rack; a movable gear is installed in the control box; a fixed hanging bracket is installed at the bottom of the control box; a driving motor is installed on the fixed hanging bracket; and the lower end of the driving motor is rotatably connected with a grinding machine head through a rotating shaft. According to the marble slab continuous anduniform grinding equipment provided by the invention, two sets of motors cooperate with each other to conduct comprehensive covering type grinding on the surface of a marble slab, meanwhile, a coolingwater spraying device is used for cooling the grinding machine head, and dust particles generated by grinding are subjected to sedimentation treatment.
Owner:南阳英良石业有限公司
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