34results about How to "Safe and comfortable working environment" patented technology

The invention relates to coal mine underwater treatment technology, in particular to a stope face roof water pre-drainage construction method, which solves the technical problem of treatment of a water-bearing bed on a coal seam of a stope face. As the process of stoping on the stope face includes down stoping firstly and up stoping secondly, stope face roof water is drained in advance through roadways beside the stope face before stoping, a drill site chamber and a water bin are constructed at the lowest position of each of the roadways, two drainage pipelines are paved on each of the roadways, an independent drainage system is utilized, drainage holes are drilled in the drill site chamber towards the stope face roof, and water for drilling is led into the water bin through hoses directly and is drained by the drainage system of the roadways. Since roof water is drained in advance, water inflow during the stoping process is reduced effectively, troubles to production of coal mines due to the roof water are eliminated, affection of flood disaster to production is avoided, a safe and comfortable working environment is provided for the stoping operation, and conditions for stability and high yield of the stope face are created.

The invention provides a wet-type dust-capturing wind current cooling device mounted at a head-on rear position of a mining working face mining machine, connected with an outlet end of a polluted wind pumping canister and comprising a cover shell, and a spray dedusting device, a cyclone centrifugal dedusting device, a dust screen filtering device, an air cooling type heat exchanger and a baffle plate demister which are connected in order inside the cover shell; positions of the cover shell walls below the cyclone centrifugal dedusting device and the baffle plate demister are respectively provided with drainage pipe ports. Fully-mechanized excavating working face dust capturing and wind current cooling works are combined together, with a treatment mode of firstly dust capturing and then wind current cooling, polluted wind is firstly subjected to multi-stage dust capturing treatment and then is demisted and cooled, the working face wind current temperature is controlled in a suitable temperature, a safe and comfortable working environment of the down-hole working face is ensured, and the problems of high temperature and high dust of the mine mining working face are better solved.

The invention discloses an automatic flow line device of hot galvanizing. The automatic flow line device of hot galvanizing comprises an overturning lifting machine (1), a double-station intelligent circulatory feeding and discharging device, a double-station eight-claw type multifunctional mechanical arm and a tunnel type heating device (31). The overturning lifting device (1) is connected with the double-station intelligent circulatory feeding and discharging device through a roller bed machine frame (7) provided with an upper roller bed (8) and a lower roller bed (9). The tunnel type heating device (31) is installed on the upper roller bed (8). The double-station eight-claw type multifunctional mechanical arm comprises two mechanical arm bodies installed on a steel plate structure frame (53). Each mechanical arm body comprises a lifting assembly, a grabbing assembly, a vibrating assembly and a power assembly. A zinc pot (54) is arranged below the grabbing assemblies. The automatic flow line device of hot galvanizing has the beneficial effects of achieving automatic production, being high in efficiency, reducing material consumption, saving cost and reducing environmental pollution.

The invention discloses a continuous acidolysis method for preparing titanium white with a sulfuric acid process. The method comprises the following steps of: starting a tail gas treating system, and uniformly mixing concentrated sulfuric acid with titanium ore powder in the mass ratio of (1.3-1.7):1 between pure sulfuric acid in the concentrated sulfuric acid and the titanium ore powder at the mixing temperature of lower than 35 DEG C to obtain an acid ore mixed solution; injecting the acid ore mixed solution and reaction starting water into a reaction container, controlling the injection speed of the acid ore mixed solution at 3-6 m<3> / h, and adjusting the injection speed of the reaction starting water at the temperature of 140-170 DEG C in a reactor to obtain a particulate solid phase substance; and adding the particulate solid phase substance and water or waste acid into a dissolving tank for dissolving, and ensuring that the F value of a titanium oxysulfate titanium solution is 1.75-1.85 and the titanium solution stability is over 500ml by adjusting the flow of dissolved water to obtain a titanium oxysulfate titanium solution. By controlling the mixture ratio of the concentrated sulfuric acid and the titanium ore powder in an acidolysis main reaction and the state and the temperature of the main reaction, a reaction process is very stable, the acidolysis quality is enhanced, solid-phase substance particles obtained after acidolysis are uniform and fine, and dissolving is quicker and more complete, so that the yield and output of acidolysis are increased.

The invention discloses a protective cover based on double-sided explosive welding and a charging structure. The protective cover can be repeatedly used and mainly comprises an outer shell, a buffer layer and a constraint net. The protective cover provides a closed environment for explosive welding, can effectively prevent an upper-layer composite plate and fragments from flying apart, reduces noise pollution and dust pollution and provides a safe and comfortable working environment for explosive machining. The charging structure comprises a constraint box, supporting shells and an explosive. The supporting shells are columnar shells shaped like the Arabic number '8' and evenly distributed along the inner surface of the constraint box, achieve a supporting effect, and enhance detonation at the boundary, thereby reducing the boundary effect. The upper surface and the lower surface of the charging structure are in fit with the upper-layer composite plate and a lower-layer composite plate, and the explosive is in a constraint state in any direction. Accordingly, the explosive detonation critical thickness is reduced, and the energy utilization rate is improved.

A circular saw includes a base plate defining a base plane, a bevel bracket which supports a circular saw blade and is pivotally mounted on the base plate for tilting the blade, the bevel bracket having a pivoting axis which is parallel to the base plane and the blade and perpendicular to a rotational axis of the blade, and the blade partly extending through an opening forming in the base plate, and an anti-splinter device for preventing cutting chips from splintering. The anti-splinter device comprises a pair of slides mounted in the opening and forming a gap between their opposing ends, an outcoming section of the blade passing through the gap, and slide driving means associated with the bevel bracket and driving the slides to move in conformity with the tilting of the blade to allow the gap to accommodate the positional change of the outcoming section of the blade.

The invention discloses an automation assembly line device for updated version hot-dip galvanizing. The device comprises a device framework (1), a roller way (12), a workpiece cleaning device (3), a workpiece zinc plating device, a frame moving device, a cooling device and a finished product discharging device (4), wherein the workpiece cleaning device (3), the workpiece zinc plating device, the frame moving device, the cooling device and the finished product discharging device (4) are sequentially arranged on the roller way (12); the roller way (12) is an annular closed track; the cooling device comprises a second mechanical arm (6), a turnover robot device (5), a servo motor (30) and an ammonium chloride liquid tank (31); the finished product discharging device (4) comprises a discharging turnover rack (21), a discharging turnover table (22) and a conveyor belt (20); a workpiece frame induction device, a hook (19) and a hook control air cylinder are arranged on the discharging turnover table (22); and the discharging turnover table (22) is connected to a rotary hydraulic oil cylinder (23) through a rotary bearing. The device has the beneficial effects that the cost is saved, thepollution is reduced, the production efficiency, and the quality are improved.

The invention discloses hot galvanizing automatic assembly line equipment. The equipment consists of a turnover elevator, a double-station intelligent circulating feeding and discharging device, a double-station eight-claw multi-functional manipulator and a tunnel type heating device. The turnover elevator is connected to the double-station intelligent circulating feeding and discharging device through a rolling path rack equipped with an upper rolling path and a lower rolling path, the double-station eight-claw multi-functional manipulator consists of a rack and an electric control cabinet and an operation box that are disposed on the rack, the rack is equipped with a No.1 station port and a No.2 station port, a workpiece lifting platform is disposed above each station port, the rack in front of the station ports is equipped with a mobile support with a built-in guide rail, the guide rail is connected to a mobile pedestal above water tanks through a mobile gear, a mobile platform is connected above the mobile pedestal through a pedestal servo motor, and the double-station eight-claw multi-functional manipulator includes two sets of mechanical arms installed on a steel plate structural frame. The hot galvanizing automatic assembly line equipment provided by the invention greatly liberates manpower and has high production efficiency.

The invention discloses an ultraviolet LED aging table suitable for surface mounting. The ultraviolet LED aging table comprises an LED electrode clamp, a spring, fixed bolts, hollow screws, positive and negative electrode conductive wires, an operation panel, and an adjustable track. Two hollow screws goes through the operation panel, the top ends of the hollow screws are equipped with the LED electrode clamp and a handle, and the tail ends are equipped with the spring and the fixed bolts which are fixed at the tail ends of the hollow screws. The other end of the spring is blocked by the operation panel, wherein one hollow screw is fixed to the operation panel, and the other hollow screw is installed in the adjustable track. The hollow screw is also internally provided with the positive and negative electrode conductive wires, and one end of each of the positive and negative electrode conductive wires is connected to the LED electrode clamp. Two sides of the adjustable track is provided with a partition board, the other side of the partition board is provided with an observation window, and a group of reflection lenses is arranged under the operation panel. According to the ultraviolet LED aging table suitable, the optical imaging confusion can be prevented, a comfortable and safe working environment is provided, the operation is convenient, the accuracy is high, and the production efficiency is improved.

The invention relates to drainage equipment, in particular to building engineering bridge tunnel interior accumulated water pump drainage equipment. According to the building engineering bridge tunnelinterior accumulated water pump drainage equipment, the dust content in a building site is effectively decreased, and pumped accumulated water can be reasonably utilized. The building engineering bridge tunnel interior accumulated water pump drainage equipment comprises a mounting frame, a mounting plate, a first cylinder body, a first piston, a first guiding sleeve, a first connecting rod and the like. The mounting plate is arranged on the lower portion of the inner side of the right wall of the mounting frame, the first cylinder body is arranged on the left side of the top of the mounting plate, and the first piston is slidably connected into the first cylinder body. According to the building engineering bridge tunnel interior accumulated water pump drainage equipment, through an atomizing spray nozzle, the accumulated water is decomposed into small water drops physically, in the process of floating in air, the water drops can absob a large amount of dust generated in the building construction process, the PM2.5 content in the air is effectively decreased, and a safe and comfortable work environment is built for building workers.

The invention relates to a cycle device, in particular to an air rapid cycle device within a plant for metallurgical steelmaking. The air rapid cycle device within the plant for the metallurgical steelmaking can quickly adjust an air convection cycle speed, reasonably adjust the use range of the device, and increase the air humidity. The air rapid cycle device within the plant for the metallurgical steelmaking comprises a first mounting plate, a sliding rail, sliding blocks, a second mounting plate and so on; and the sliding rail is embedded into the left side of the top of the first mountingplate, the top of the sliding rail is symmetrically connected with sliding blocks in a left-right and sliding mode, the top of the sliding blocks at the left and right sides is provided with the second mounting plate, and the top of the second mounting plate is provided with an air cycle device. According to the air rapid cycle device within the plant for the metallurgical steelmaking, first vanesat the left and right sides rotate at a high speed, the air convection cycle speed is accelerated to facilitate a quick exchange of air in the plant and outside air, and a comfortable and safe working environment for workers is created.

The invention discloses a self-adaptive intelligent control system of a ventilator and belongs to an intelligent speed regulation system of a motor of a mine ventilator. The self-adaptive intelligent control system comprises a mine environment parameter monitoring unit, a signal transmission network and a motor control unit, wherein the mine environment parameter monitoring unit comprises a gas dynamic monitoring sensor, a gas concentration sensor, a wind speed sensor, a carbon monoxide sensor, an oxygen sensor and an environment temperature sensor; the signal transmission network comprises a CAN bus, a wireless communication network or an optical fiber industrial Ethernet; the motor control unit mainly comprises a frequency adjustment controller; the mine environment parameter monitoring unit is used for transmitting mine gas dynamic change, gas concentration, wind speed, carbon monoxide, oxygen and the mine environment information provided by the environment temperature sensor to the ventilator motor control unit via the communication network; the motor control unit is used for adjusting the frequency according to the mine environment parameters, controlling the rotation speed of the ventilator motor, providing reasonable wind flow, ensuring the safety of mine operation environment and simultaneously achieving the energy conservation effect of the motor.

A computed desk-chair assembly able to synchronously turn the computer holding plate and the back rest of chair is composed of the computer holding the plate, chair with movable back rest and its drive axle, the turning arm for said computer holding plate, the axle of said turning arm, and a turning driver structure.

The invention discloses a horizontal type numerically-controlled machine tool for cutting. The horizontal type numerically-controlled machine tool for cutting comprises a lathe bed (1), a headstock (2), a saddle (3), a centralized lubrication device (4), a protective cover (5), a protective sliding door (6), an operating table (7), a cooling water tank (8) and a main motor (9). The horizontal type numerically-controlled machine tool for cutting is characterized in that the main motor (1) is arranged on the left side of the interior of the protective cover (5) of the lathe bed (1), the headstock (2) is installed in the middle of the interior of the protective cover (5), the saddle (3) is installed on the right side of the interior of the protective cover (5), the centralized lubrication device (4) is installed at the tail end of the right side of the interior of the protective cover (5), a tool rest slide (15) is installed on a small pushing disc (16) through a double-line rail (19), the small pushing disc (16) is installed on a sliding saddle (17), and the sliding saddle (17) is installed on a big pushing disc (18) through the double-line rail (19). According to the horizontal type numerically-controlled machine tool for cutting, a rotary oil cylinder can rotate at a high speed and is prevented from being stuck, clamping force can be adjusted when the horizontal type numerically-controlled machine tool is used in cooperation with a pump station so that deformation, caused during machining, of solid workpieces and thin-walled workpeices can be effectively controlled, and the requirements of different technologies can be met.

The invention belongs to the technical field of machining, and discloses a columnar workpiece inner hole quenching device and equipment. The columnar workpiece inner hole quenching device comprises afixing frame, a workpiece bearing part, a workpiece heating part, a workpiece cooling part and a displacement control part, wherein the workpiece carrying part is arranged on the fixing frame, a columnar workpiece is positioned on the workpiece bearing part, and the workpiece heating part can extend into a columnar workpiece inner hole to be heated under the driving of the displacement control part. According to the columnar workpiece inner hole quenching device, local quenching can be carried out according to requirements, and the technical requirements of a workpiece can be met, and meanwhile, the energy consumption is reduced, and the working environment is safer and more comfortable; the workpiece is driven by rolling wheels to rotate while the workpiece is quenched, so that the heating and cooling of the workpiece can be guaranteed; and an angle adjusting mechanism is properly adjusted, so that the workpiece, an induction heating coil and an auxiliary cold water ring can be positioned at the angle that the spraying direction and the flow direction of cooling liquid is the most beneficial to the quenching effect of the workpiece, an operator can conveniently and flexibly control the quenching structure and the quenching uniformity of the workpiece, and the product quality is ensured.

The invention discloses a non-dusting cement feed hopper and a feeding method thereof, and relates to the field of buildings. The non-dusting cement feed hopper comprises a shell component, a feed hopper component and a transmission component, the shell component comprises a shell which is a hollow cylinder, sector-shaped openings are formed in the left side face and the right side face, the feedhopper component comprises four feed hoppers, a rotating shaft and a feed pipe, the feed hoppers are rotationally arranged in the shell through the rotating shaft, a feed pipe is arranged in the center of the shell, one end of the feed pipe is sleeved with the rotating shaft, the other end of the feed pipe is arranged on the outer side of the shell, the four feed hoppers are uniformly arranged onthe rotating shaft and provided with feed inlets, each feed hopper is internally provided with a metal filter screen, and telescopic rods connected with the bottom faces of the metal filter screens are arranged on the portions, at the bottoms of the metal filter screens, of the inner walls of the feed hoppers. According to the non-dusting cement feed hopper, when construction is conducted on the construction site, the phenomenon that in the cement and sand feeding process, a large amount of dust is raised is prevented, the construction environment of a construction site is effectively improved, and workers can have a comfortable and safe working environment.

The invention discloses an unattended vacuum stability experiment testing device, system and method. The testing device comprises a temperature control box, a housing disposed on the temperature control box, a heating part disposed in the housing and a soaking block disposed in the heating part, and at least one accommodation cavity is disposed on the soaking block. A heat preservation cover body assembly covers the top of the accommodation cavity, a temperature sensor, a gas pressure sensor and a test tube sleeve are located in the accommodation cavity, a through hole for containing a reaction test tube is formed in the middle of the test tube sleeve, the gas pressure sensor is connected with the reaction test tube through a three-way pipe fitting, and the other end of the three-way pipe fitting is connected with a negative pressure pipeline. The temperature control box is electrically connected with the heating part. The testing system comprises a vacuum pump, a tester, an upper computer and the testing device. According to the device, a stability experiment becomes simple and convenient, the safety risk is greatly reduced, and human resources are saved.

The invention provides a well wall pouring device and a raise boring well wall supporting construction method. The well wall pouring device is structurally characterized in that a material guide table is welded to the edge of the upper end of a rotating template; a baffle is welded to the edge of the top end of the guide table. A flattening mechanism is connected to the periphery of the top of the rotary template or the periphery of the material guide table; a rotating shaft is arranged in the well wall irrigator; the rotating shaft is connected with the rotating template, the material guiding table and the baffle through spokes, and a connecting part is arranged at the top end. The construction method comprises the steps of manufacturing the well wall pouring device, excavating the vertical shaft, manufacturing the vertical shaft wall base, installing the well wall pouring device through a drill rod, placing the drill rod into the bottom of the vertical shaft, pouring concrete, rotating and slowly lifting the well wall pouring device, completing well wall pouring, and standing the well wall for curing. Compared with the prior art, in the well wall supporting construction period, personnel do not enter a well, the construction procedure is simplified, equipment and material input is reduced, a safe and comfortable working environment is created, and the engineering cost is reduced.

The invention discloses a prefabricated type foundation pit support structure for an environment-friendly underground garage. The prefabricated type foundation pit support structure is characterized in that the prefabricated type foundation pit support structure comprises prefabricated supporting piles, prefabricated profile steel annular supports and a prefabricated profile steel coping annular beam, the prefabricated profile steel annular supports are arranged on the inner walls of the prefabricated supporting piles, and the prefabricated profile steel coping annular beam is arranged at thetop ends of the prefabricated supporting piles. Environment-friendly underground garage supporting is conducted by adopting the prefabricated elements, after the underground garage is completed, the prefabricated elements can be recycled and reutilized, and therefore the prefabricated type foundation pit support structure has the characteristics of being economical and environmentally friendly; the installing mechanical degree of the prefabricated elements is high, and the operation environment is safe and comfortable; and the prefabricated elements do not need to be maintained after being installed, the next process can be conducted, and the construction period can be greatly shortened.

The application relates to a dust isolation device for indoor decoration, and relates to the field of isolation equipment. It includes a chassis, the top of the chassis is provided with an air inlet, and one side of the bottom is provided with an air outlet. The chassis is provided with a suction fan at the air inlet. The top of the cabinet is also rotated with a suction pipe, the bottom of the suction pipe communicates with the air inlet of the cabinet, the four corners of the bottom of the cabinet are provided with wheels, and the cabinet is detachably installed at the air outlet. A filter screen assembly is blocked, and a through hole is opened on the side of the bottom of the chassis away from the air outlet, and a bottom dust suction assembly is provided at the through hole. This application solves the dust generated by interior decoration, and reduces the harm to construction personnel and users.

The invention relates to a novel tractor capable of traveling in two directions. The tractor comprises a machine frame, a traveling system, a power device, a steering system and a manipulating system, wherein the machine frame is provided with a cab capable of being sealed, the cab is provided with a rear face plate and a pneumatic spring rear window, the manipulating system is composed of a front manipulating system body, a rear manipulating system body, an instrument table and a rotary seat, the front manipulating system body and the rear manipulating system body are arranged on a bottom plate of the machine frame, the steering system is composed of a steering gear pump, an oil tank, an electromagnetic reversing valve, a front steering gear box, a rear steering gear box and a steering hydraulic cylinder, and all components of the steering system are connected through high-pressure hoses to form a circulating hydraulic return circuit. According to the novel tractor, the design of the steering system is improved, only one electromagnetic reversing valve is used, the front full-hydraulic steering gear box and the rear full-hydraulic steering gear box are in parallel connection with a hydraulic system, namely, the two full-hydraulic steering gear boxes share one gear pump and one steering oil cylinder, the hydraulic return circuit system is simple, safe and reliable, and cost is saved.

The invention relates to coal mine underwater treatment technology, in particular to a stope face roof water pre-drainage construction method, which solves the technical problem of treatment of a water-bearing bed on a coal seam of a stope face. As the process of stoping on the stope face includes down stoping firstly and up stoping secondly, stope face roof water is drained in advance through roadways beside the stope face before stoping, a drill site chamber and a water bin are constructed at the lowest position of each of the roadways, two drainage pipelines are paved on each of the roadways, an independent drainage system is utilized, drainage holes are drilled in the drill site chamber towards the stope face roof, and water for drilling is led into the water bin through hoses directly and is drained by the drainage system of the roadways. Since roof water is drained in advance, water inflow during the stoping process is reduced effectively, troubles to production of coal mines due to the roof water are eliminated, affection of flood disaster to production is avoided, a safe and comfortable working environment is provided for the stoping operation, and conditions for stability and high yield of the stope face are created.

The invention discloses an ultraviolet LED aging table suitable for surface mounting. The ultraviolet LED aging table comprises an LED electrode clamp, a spring, fixed bolts, hollow screws, positive and negative electrode conductive wires, an operation panel, and an adjustable track. Two hollow screws goes through the operation panel, the top ends of the hollow screws are equipped with the LED electrode clamp and a handle, and the tail ends are equipped with the spring and the fixed bolts which are fixed at the tail ends of the hollow screws. The other end of the spring is blocked by the operation panel, wherein one hollow screw is fixed to the operation panel, and the other hollow screw is installed in the adjustable track. The hollow screw is also internally provided with the positive and negative electrode conductive wires, and one end of each of the positive and negative electrode conductive wires is connected to the LED electrode clamp. Two sides of the adjustable track is provided with a partition board, the other side of the partition board is provided with an observation window, and a group of reflection lenses is arranged under the operation panel. According to the ultraviolet LED aging table suitable, the optical imaging confusion can be prevented, a comfortable and safe working environment is provided, the operation is convenient, the accuracy is high, and the production efficiency is improved.

The invention relates to a cycle device, in particular to an air rapid cycle device within a plant for metallurgical steelmaking. The air rapid cycle device within the plant for the metallurgical steelmaking can quickly adjust an air convection cycle speed, reasonably adjust the use range of the device, and increase the air humidity. The air rapid cycle device within the plant for the metallurgical steelmaking comprises a first mounting plate, a sliding rail, sliding blocks, a second mounting plate and so on; and the sliding rail is embedded into the left side of the top of the first mountingplate, the top of the sliding rail is symmetrically connected with sliding blocks in a left-right and sliding mode, the top of the sliding blocks at the left and right sides is provided with the second mounting plate, and the top of the second mounting plate is provided with an air cycle device. According to the air rapid cycle device within the plant for the metallurgical steelmaking, first vanesat the left and right sides rotate at a high speed, the air convection cycle speed is accelerated to facilitate a quick exchange of air in the plant and outside air, and a comfortable and safe working environment for workers is created.

The invention discloses a road cone capable of repelling mosquitos by igniting mosquito-repellent incense. The road cone comprises a road cone body and a base, wherein a mosquito-repellent incense drawer box is arranged inside the base; the mosquito-repellent incense drawer box can be pulled out from one side surface of the base; a horizontally-arranged latticed pad frame is arranged on the mosquito-repellent incense drawer box; the outer side end of the latticed pad frame is embedded in the wall of the mosquito-repellent incense drawer box; an open hole is formed in the center of the base at the upper end of the mosquito-repellent incense drawer box; the road cone boy is a cavity structure; the two ends of the road cone body are communicated with each other; the bottom of the road cone body covers the open hole and is fixed on the base; the annular side of the middle end of the sidewall of the road cone body is provided with mosquito-repellent incense diffusing and air transmitting holes which are uniformly distributed. Through the way, the road cone disclosed by the invention can be used for repelling mosquitos by igniting the mosquito-repellent incense in the road cone when setting a road cone isolation road segment so as to prevent constructors from being bitten by the mosquitos and providing a safe and comfortable working environment.

The invention provides a wet-type dust-capturing wind current cooling device mounted at a head-on rear position of a mining working face mining machine, connected with an outlet end of a polluted wind pumping canister and comprising a cover shell, and a spray dedusting device, a cyclone centrifugal dedusting device, a dust screen filtering device, an air cooling type heat exchanger and a baffle plate demister which are connected in order inside the cover shell; positions of the cover shell walls below the cyclone centrifugal dedusting device and the baffle plate demister are respectively provided with drainage pipe ports. Fully-mechanized excavating working face dust capturing and wind current cooling works are combined together, with a treatment mode of firstly dust capturing and then wind current cooling, polluted wind is firstly subjected to multi-stage dust capturing treatment and then is demisted and cooled, the working face wind current temperature is controlled in a suitable temperature, a safe and comfortable working environment of the down-hole working face is ensured, and the problems of high temperature and high dust of the mine mining working face are better solved.

The invention discloses a dust removal device for furniture polishing, and the dust removal device comprises a polishing platform, a cavity, an exhaust fan, a water-whirling apparatus, an air suction pore plate and a filter layer, wherein the cavity is arranged above the polishing platform and provided with an upper processing cavity separated from the outside, and the top of the cavity is provided with an exhaust pipe communicated with the upper processing cavity; the exhaust fan is connected with the exhaust pipe; the polishing platform is provided with a lower processing cavity communicated with the upper processing cavity; the polishing platform is also provided with a water tank which is spaced out, arranged above the lower processing cavity and exposed to the outside; the air suction pore plate is respectively arranged on the cavity and the polishing platform and covers the water tank; the water-whirling apparatus is arranged on the polishing platform, the bottom end of the water-whirling apparatus stretches into the lower processing cavity, and the top of the water-whirling apparatus stretches into the water tank; and the filter layer is arranged in the upper processing cavity and located below the exhaust pipe. After being sequentially sucked into the air suction pore plate and the water tank, dust (generated by polishing) is processed in the water-whirling apparatus; after passing through the lower processing cavity and the filter later in the upper processing cavity, the processed gas is discharged to the outside by virtue of the exhaust pipe. The dust removal device disclosed by the invention has the advantages of good dust removal effect, simple structure and low cost.