1762results about "Portable frames" patented technology

The invention provides a coal mine underground roadway surrounding rock reinforcement grouting system, and relates to the technical field of coal mining. Comprising a stirring barrel, a grouting pump, a moving frame, a grouting pipe mechanism, a steering mechanism, a grouting pipe length adjusting mechanism, a plugging mechanism and a power mechanism, and an input opening of the grouting pump communicates with the stirring barrel; the grouting pump and the stirring barrel are both arranged on the moving frame; the grouting pipe mechanism communicates with an output port of the grouting pump, and the grouting pipe mechanism is used for grouting the drill hole; the steering mechanism is connected with the grouting pipe mechanism and used for adjusting the angle of the grouting pipe mechanism so that the grouting pipe mechanism can be aligned with the drilled hole. The grouting pipe length adjusting mechanism is connected with the steering mechanism and the grouting pipe mechanism, and the grouting pipe length adjusting mechanism is used for adjusting the length of the grouting pipe mechanism; the periphery of the grouting pipe mechanism is sleeved with the plugging mechanism, and the plugging mechanism is used for plugging a drill hole when grouting is conducted on the interior of the drill hole through the grouting pipe mechanism; and the power mechanism is connected with the grouting pipe length adjusting mechanism.

A pipeline inspection robot disclosed by the present invention comprises a mobile chassis, a lifting frame and a detector, the detector is installed at the upper end of the mobile chassis through the lifting frame, the lifting frame is used for vertically adjusting the height of the detector, and the mobile chassis is provided with a controller and an aviation plug. The movable chassis, the lifting frame, the detector and the aviation plug are all electrically connected with the controller, the aviation plug is used for being detachably connected with a cable, the detector is installed at the upper end of the movable chassis through the lifting frame, and the detector, the lifting frame and the movable chassis are all electrically connected with the controller on the movable chassis. In this way, the operation states of the movable chassis, the lifting frame and the detector are all controlled by the controller, the aviation plug connector is electrically connected with external power supply equipment and a control terminal through cables, and therefore the pipeline inspection robot is powered and controlled by the outside world.

The utility model relates to the technical field of rose essential oil preparation, in particular to a distiller for rose essential oil preparation, which improves the distillation efficiency, can clean the inside, ensures normal use, is convenient to move integrally and is beneficial to wide popularization. Comprising a distillation cylinder, a heating sleeve and a condensation mechanism, the outer wall of the distillation cylinder is sleeved with the heating sleeve, and the input end of the condensation mechanism is connected with the top output end of the distillation cylinder; the bottom end of the distillation cylinder is installed at the top end of the base, the base is installed at the top end of the moving mechanism, the water tank is installed at the left end of the top of the moving mechanism, the water tank is provided with the water adding opening and communicated with the distillation cylinder, and a supporting assembly is installed on the lower portion of the moving mechanism. The stirring mechanism is mounted in the distillation cylinder, a feeding hole is formed in the right end of the top of the distillation cylinder, and the feeding mechanism is mounted at the feeding hole.

The utility model provides a self-unloading generator set, and belongs to the technical field of generator sets. The self-unloading generator set comprises a generator set body and a loading and unloading moving mechanism, a controller is installed on the left side of the front side of the generator set body, a chassis is installed at the bottom of the generator set body, moving cavities are formed in the four corners of the bottom of the chassis, moving columns are movably connected into the moving cavities, and moving wheels are fixedly connected to the bottoms of the moving columns. Through the arrangement of the loading and unloading moving mechanism, when the chassis is matched with the generator set body for use, a user can conveniently load, unload and move the position of the generator set body through the chassis according to the actual situation, the generator set body can be better loaded and unloaded, and the practicability of the generator set body is improved. And the situation that the generator set body is difficult to move and assemble in the assembling and disassembling process is avoided, so that the assembling and disassembling convenience and flexibility of the generator set body are improved.

The utility model discloses a drilling sampling device for road detection, which comprises a main body, an air cylinder arranged at the upper end of one side of the main body, a motor box arranged at the output end of the air cylinder, a sampling barrel arranged right below the motor box, and a dust collection cavity arranged inside the main body, fixing cylinders are welded to the two sides, the front end and the rear end of the motor box, the fixing cylinders are of hollow structures and communicate with one another through connecting pipes, a dustproof net is arranged on the upper side of one side in the dust collecting cavity, and the dust collecting cavity is connected with one of the fixing cylinders through a conveying pipe; and the storage cavity is formed in the upper end of the main body, and a partition plate is arranged in the storage cavity. According to the drilling sampling device for road detection, dust can be accumulated in the dust collection cavity to be collected, and dust diffusion is avoided. And moreover, an additional storage device is not needed for storage, so that the use is convenient and quick, and the practicability is good.

The present invention discloses a Beidou positioning self-loading and unloading lifting walking platform high-efficiency diesel generator set, which relates to the field of generator technology, including a bottom plate and a top plate, a lifting adjustment mechanism is provided between the bottom plate and the top plate, the lifting adjustment mechanism is used to adjust the height of the top plate, and a diesel engine and a generator are installed on the top of the top plate. The present invention sets the diesel storage tank on the bottom plate, which greatly reduces the overall center of gravity of the equipment compared to placing all diesel on the top plate, reduces the diesel load on the top plate, reduces the workload of the lifting adjustment mechanism, and improves the operating efficiency of the equipment; a transfer storage tank is installed on the top plate, which maintains the same height as the diesel engine. The diesel storage tank first temporarily supplies diesel to the transfer storage tank, and then the transfer storage tank supplies oil to the diesel engine, ensuring a stable supply of diesel, thereby ensuring continuous and stable power generation of the generator, and avoiding the problem of unstable power supply due to changes in oil supply pressure.

The invention discloses a gas pipeline leakage detection vehicle structure carrying laser detection and a method. The structure comprises a detection vehicle body, a meteorological detection structure and a gas detection structure, the meteorological detection structure is arranged at the top of the detection vehicle body; the gas detection structure is arranged in the detection vehicle body; the fuel gas detection structure comprises a detection gas inlet, a detection gas connecting pipeline, a fuel gas detector, a detection gas diffusing pipeline, a vehicle-mounted stabilizing device and a computer control system; the meteorological detection structure comprises an anemograph, a meteorological data detector and a positioning system; and the anemograph is arranged in front of the meteorological data detector and the positioning system. The detection gas inlet is formed in the front end of the detection vehicle body and is connected with the vehicle-mounted stabilizing device through the detection gas connecting pipeline; the other end of the vehicle-mounted stabilizing device is connected with a detection gas diffusion pipeline; and the fuel gas detector is arranged above the vehicle-mounted stabilizing device and is connected with the computer control system. According to the invention, the detection precision and the detection efficiency are improved.

The invention discloses a combined high-precision peristaltic pump which comprises a driver, a pump head, a combined fixing mechanism and a grip, the pump head is arranged at one end of the driver, the combined fixing mechanism is installed at the bottom of the driver, and the grip is fixedly connected to the top of the driver. The pump head comprises a wheel seat, a wheel block group, a hose, a connecting wire pipe, a transmission rod, a connecting rod, a fixing pipe, a fixing bolt, a rubber pad, a rotary clamping rod and a clamping hole, the rotary clamping rod is fixedly connected to one end of the driver, the wheel block group is arranged at one end of the wheel seat, the hose is arranged in the wheel block group, and the connecting wire pipe is arranged in the clamping hole. The connecting wire pipe is fixedly connected to the top of the wheel block set, and the transmission rod is arranged on the front face of the wheel block set. According to the peristaltic pump, the connecting rod is adopted to be matched with the fixing pipe, the peristaltic pump can be installed on a combined fixing mechanism, the multiple pump heads can enable the driver to drive the multiple hoses to conduct metering work of infusion, and high-precision infusion measurement of the peristaltic pump is guaranteed.

The utility model is suitable for the technical field of temperature detection, and provides an asphalt pavement temperature detection device, which comprises a protection box, an infrared thermal imager is arranged in the protection box in a sliding manner, and the bottom of the protection box is provided with a through hole for the infrared thermal imager to move; the banister brush is mounted in the protection box in a sliding manner; the installation box is fixedly installed on one side of the protection box, a rack is installed on the installation box in a sliding mode, one end of the rack is connected with the banister brush, a driving gear is rotatably installed in the installation box, the driving gear is meshed with the rack, a driving motor is fixedly installed on one side of the installation box, and the driving motor is fixedly installed on the other side of the installation box. And an output shaft of the driving motor is connected with the driving gear. According to the asphalt pavement temperature detection device, the infrared imaging technology is adopted, the temperature distribution condition of the whole pavement can be reflected, the lens of the thermal infrared imager can be cleaned, and the imaging effect is guaranteed.

The utility model relates to the technical field of power equipment, in particular to a movable charging pile which comprises a base, an air pump and a charging pile body, a damping mechanism is arranged at the lower end of the base and connected with a sliding mechanism, the air pump is arranged at the upper end of the base and connected with a supporting mechanism, and the charging pile body is connected with the air pump. The charging pile comprises a base, a take-up mechanism is arranged at the upper end of the base, a charging pile body is arranged at the upper end of the base, a cooling mechanism is arranged on the side edge of the charging pile body, a rain shielding mechanism is arranged at the upper end of the charging pile body, rain shielding is conducted through the rain shielding mechanism in the using process, and the device is prevented from being corroded by rain in the long-term using process; and an arranged cooling mechanism can cool the charging pile body when the device is heated in the using process, and the situation that the service life of the battery is shortened due to the fact that the battery is kept in an overheat state for a long time is avoided.

The utility model discloses a movable air supply machine, which aims at continuously supplying air to stage equipment and adjusting the position at any time, and adopts the technical scheme that the movable air supply machine comprises a movable machine base, an air inlet and an air outlet are formed in the machine base, an air inlet module and an air storage tank are arranged in the machine base, and the air inlet module is connected with the air storage tank. The air inlet module comprises a filter and an air compressor, the filter is connected with the input end of the air compressor, the air compressor inputs airflow into the air storage tank, and the output end of the air storage tank is connected with the air outlet.

The invention discloses a bridge crack detection device, and belongs to the technical field of bridge crack detection by adopting an optical means, the bridge crack detection device comprises a support carrier, a mobile driving assembly and a detection assembly, the mobile driving assembly and the detection assembly are mounted at the bottom of the support carrier, and the mobile driving assembly comprises a universal support wheel and two groups of rollers; the universal supporting wheel is located on the same central axis connecting the center of the supporting carrier and the center of the detection assembly, the two rolling wheels are symmetrically installed on the two sides of the rolling wheels, and the two sets of rolling wheels are connected with first motors respectively; a cavity is formed in the inner side of the supporting carrier, a sliding groove extending in the vertical direction is formed in the bottom of the supporting carrier, the detection assembly comprises a detection plate, a second motor, a cam disc, a push rod, a detection support and an optical sensor, the detection plate is installed in the sliding groove, the second motor is fixed to the top of the supporting carrier, and the output end of the second motor is connected to the cam disc. The cam disc is provided with a cam groove which is closed in the circumferential direction. According to the device, the bridge crack detection efficiency can be improved, and the labor intensity of workers is reduced.

The invention discloses a high-pressure oil supply system for hydraulic riveting. The system comprises an electric control system and a hydraulic power system. The electric control system and the hydraulic power system are arranged on the moving device; the hydraulic power system comprises two motors and two hydraulic pump sets coaxially driven by the two motors respectively. Each hydraulic pump set comprises a low-pressure large-flow pump and two high-pressure small-flow pumps; the low-pressure large-flow pumps in each set suck hydraulic oil through the oil tank and supply the hydraulic oil to the two high-pressure small-flow pumps in the same set, and the two high-pressure small-flow pumps in the two sets respectively provide power hydraulic oil for the hydraulic control oil way and power hydraulic oil for the riveting tool after being connected in parallel. According to the system, two motors are adopted to drive two sets of three coaxial hydraulic pumps, two-stage pump station pressurization large-flow oil supply is achieved, and the rated pressure of 150 MPa can be provided; the system is compact in structure, safe and reliable, the requirement of a hydraulic riveting tool for an ultrahigh-pressure hydraulic riveting system in the prior art can be met, and a foundation can be laid for light weight of an existing hydraulic riveting tool.

The present invention provides a hydraulic oil pipe power tong for oil fields, and relates to the field of hydraulic power tongs. The hydraulic oil pipe power tong for oil fields comprises a base plate, and the front and rear parts of the top of the base plate are fixedly connected with uniformly distributed hydraulic cylinders, the tops of the hydraulic cylinders are fixedly connected to the bottom of the mounting plate, the mounting plate and the limit rods are slidably connected, and the tops of the limit rods are fixedly connected to the four corners of the bottom of the fixed frame. The oil pipe tool and the lower part of the drill tool can be clamped by the second clamping jaw, and the hydraulic motor can drive the turntable to rotate by using the reduction gear box, so that when the oil pipe tool and the upper part of the drill tool are clamped by the pair of clamping jaws, the clamped oil pipe tool and the drill tool can be driven to rotate, so as to facilitate the separation of the pipe and the drill, and the mounting plate can be driven to move up and down by the hydraulic cylinder fixed on the base plate, and the mounting plate can be guided and limited by the limit rod when the mounting plate moves, so that it can be suitable for different scenes when used.

The utility model relates to the technical field of steel belt armoring machines, discloses a steel belt armoring machine with a built-in synchronous pulley, and solves the problems that the steel belt armoring machine is inconvenient to move in the use process, and is inconvenient to fix after being moved, so that the operation of people is influenced, and better practicability is inconvenient to achieve. The steel belt armoring machine comprises a steel belt armoring machine body, an adjusting moving positioning assembly is fixedly installed at the bottom of the steel belt armoring machine body, the adjusting moving positioning assembly comprises a supporting plate, the supporting plate is fixedly installed at the bottom of the steel belt armoring machine body, a movable bottom plate is arranged under the supporting plate, and fixing installation holes are formed in the four corners of the movable bottom plate in a penetrating mode. Four through holes are symmetrically formed in the movable bottom plate in a penetrating manner; according to the steel belt armoring machine disclosed by the utility model, the steel belt armoring machine is convenient to move in the use process, and is convenient to fix after being moved, so that people can better operate the steel belt armoring machine, and better practicability can be conveniently achieved.

The present invention relates to a durable ceramic pump, which includes a main shaft, a pump body and a bracket, the main shaft is rotatably connected with the bracket through a bearing, a mechanical seal is arranged on the main shaft between the bracket and the pump body, the pump body includes a pump casing and a main impeller and an auxiliary impeller arranged inside the pump casing, the main impeller is arranged at the shaft end of the main shaft, the auxiliary impeller is arranged on the main shaft between the mechanical seal and the main impeller, and the front and rear of the main impeller are respectively provided with a front guard plate and a rear guard plate, an inner hole is arranged on the rear guard plate, and the inner hole is sleeved on the main shaft, and there is a second gap with the main shaft, and the second gap is 5-300mm. The present invention realizes zero leakage of the ceramic pump during operation through mechanical sealing, improves the on-site environment, and at the same time, by increasing the inner hole diameter of the rear guard plate, the slag slurry can flow out from the inner hole of the rear guard plate when the pump is stopped, reducing the deposition of slurry in the pressure reducing cover and the rear guard plate, and adopts a mechanical seal to improve the sealing performance, ensure that the slag slurry has no leakage, reliable operation, and ensure the working efficiency of the ceramic pump.

The invention discloses a rapidly-spliced foldable display screen and a display screen all-in-one machine, and belongs to the technical field of LED display screens. The number of the display screen units is two, the display screen units are arranged in the vertical direction, and the two display screen units are arranged in a hinged mode through a hinge folding mechanism; the bolt assembly is arranged between the two display screen units and is used for reinforcing and connecting the two display screen units when the two display screen units are unfolded to be in a plane state; according to the rapidly-spliced foldable display screen and the display screen all-in-one machine, the stability, strength, precision and flatness of the whole display screen before and after folding are guaranteed through the cross beams, the stand columns, the cross rods, the positioning aluminum blocks and the plug pins, and meanwhile the multiple adjacent display screens can be connected through the deflection locks and the positioning aluminum blocks; the display screen all-in-one machine is formed to enlarge the application range of the display screen.

The utility model relates to the technical field of rubber stripping devices, in particular to a portable hydraulic rubber tube rubber stripping machine which comprises a rubber stripping mechanism and further comprises a base, a rubber tube and a rubber tube, the moving mechanism is arranged on the base, the moving mechanism comprises a fixed cover, a storage groove, a motor, two openings and a plurality of pulleys, the fixed cover is fixedly connected to the base, the storage groove is formed in the base, the motor is installed on the base, and through cooperation of the base and the pulleys, position adjustment or transportation of the whole device is facilitated; through cooperation of a telescopic pull rod, a groove, a moving block and the like, assistance is conveniently provided for people, the people can further conveniently move or transport the whole device, convenience is improved, through cooperation of a motor, a gear, a toothed plate, a sliding plate and the like, a pressing plate, a top plate and the like can be conveniently driven to conduct height adjustment, and the top plate can conveniently abut against the ground in a large area; and the stability of the whole device during use is improved.

The utility model relates to the technical field of building construction dust fall, and discloses an on-site dust fall device for engineering building construction, which comprises a box body, four corners of the bottom of the box body are fixedly connected with supporting columns, the left side and the right side of the bottom of the box body are fixedly connected with L-shaped fixing plates, the inner sides of the two L-shaped fixing plates are fixedly connected with convex blocks, and the convex blocks are fixedly connected with the bottom of the box body. Pressing plate bases are slidably connected to the adjacent sides of the two L-shaped fixing plates correspondingly, first grooves are formed in the left side and the right side of each pressing plate base correspondingly, wheels are installed at the four corners of the bottom of each pressing plate base correspondingly, the tops of the L-shaped fixing plates are rotationally connected with two-way screw rods, and the left ends and the right ends of the outer walls of the two-way screw rods are rotationally connected with guide blocks correspondingly; according to the utility model, the wheels are driven to move up and down through the movement of the two-way screw rod, the guide block and the connecting plate, and dust particles suspended in the air can be effectively captured through the filter plates mounted on the two sides of the fan, so that the air pollution is reduced.

The invention discloses a sampling device for construction engineering detection and a using method thereof, and relates to the technical field of construction engineering.The sampling device for construction engineering detection comprises a movable frame, and a supporting frame is fixed to the top of the movable frame. According to the sampling device for construction engineering detection and the use method thereof, after sampling of the sampling barrel is completed, soil in the sampling barrel can be pushed out by a push plate by pushing a push rod, and the problem that the soil is adhered to the interior of the sampling barrel and is inconvenient to discharge is solved; when a push plate moves downwards, a spiral groove in a connecting rod moves on a convex ball, the connecting rod rotates, an inner gear ring, an L-shaped connecting block and a gear are matched to drive a pointed cone to rotate, and when the push plate downwards extrudes and discharges the soil, the pointed cone is firstly in contact with the soil in the sampling barrel, so that the problem that the soil in the sampling barrel is in contact with the soil in the sampling barrel is solved; the soil at the top can be firstly crushed and scattered, so that the problem that the soil is accumulated together in the sampling barrel and is inconvenient to discharge from the sampling barrel is solved.

The invention discloses photocatalyst coating producing and processing equipment with a rotating speed adjusting function, and belongs to the technical field of photocatalyst coating production.The photocatalyst coating producing and processing equipment comprises a stirring barrel, supports are arranged on the two sides of the lower end of the stirring barrel, a discharging pipe is arranged on the lower side of one end of the stirring barrel, and an air blower is arranged on one side of the upper end of the stirring barrel; an air blower is arranged on one side of the upper end of the stirring barrel, an air conveying pipe is arranged between the air blower and the stirring barrel, a feeding bin is arranged on the other side of the upper end of the stirring barrel, and a buffering assembly is arranged on the lower side of the support. The main shaft drives the auxiliary shaft to rotate anticlockwise through the main gear and the auxiliary gear, the main shaft and the auxiliary shaft rotate to mix and stir coating raw materials in the stirring barrel through the multiple stirring rods, the rotating speed of the stirring rods can be adjusted by adjusting the rotating speed of the first motor, and the mixing and stirring effect on the coating raw materials in the stirring barrel is better by arranging the stirring assembly.

The utility model belongs to the technical field of coal mining equipment, and particularly relates to a coal mining machine supporting device for a coal mine, which comprises a supporting piece, a supporting table, foldable guide wheel components and a buffer supporting component, the foldable guide wheel components are mounted at four corners of the bottom surface of the supporting table, and the supporting piece comprises sleepers and guide rails. The buffering supporting assemblies are installed on the left side and the right side of the supporting table and perpendicularly above the guide rails and comprise pressing plates, the pressing plates are installed at the bottom ends of oil buffers, the oil buffers are installed on the bottom face of the supporting table, and rubber pads are arranged on the bottom faces of the pressing plates. The foldable guide wheel assembly can reduce the height to roll on the supporting piece so that the supporting table and the coal mining machine on the supporting table can move smoothly, the foldable guide wheel assembly can also be folded and retracted so that the buffering supporting assembly can make contact with the supporting piece, damping supporting is provided for the coal mining machine, and the pressing plate and the rubber pad can be tightly pressed on the guide rail so that the supporting area and friction force can be effectively improved. And the position stability of coal mining machine operation is ensured.

The invention discloses dust fall equipment for a building construction site, and relates to the technical field of dust fall, and the dust fall equipment comprises a dust fall device. According to the dust falling equipment for the building construction site, the dust falling device is designed and makes contact with the ground through the stabilizing mechanism, so that the contact area between the dust falling equipment and the ground is increased, the friction force of components to the ground is improved, dust in the building construction site is absorbed through wind power generated by the pneumatic mechanism, the dust falling effect is achieved, human health is protected, and the disease risk is reduced; dust is guided through the guide plate, the flowing speed in the dust equipment is increased, dust residues in the equipment are reduced, liquid is sprayed into a site through the spraying device, so that the dust falling effect is achieved, the airflow flowing direction is changed through the pneumatic mechanism, the pneumatic mechanism is matched with the spraying device, and the dust falling effect is improved. In the process that the spraying device sprays the site liquid for dust falling, the liquid spraying range is enlarged through wind power, so that the site dust falling efficiency is improved, and the equipment spraying range is enlarged.

The utility model relates to the field of three-coordinate measuring machines, and provides a base for a three-coordinate measuring machine, which comprises the three-coordinate measuring machine, a plurality of bases are fixedly arranged at the bottom of the three-coordinate measuring machine, the bases are fixedly arranged at the bottom of the three-coordinate measuring machine in a bolt connection mode, moving wheels are fixedly arranged on the outer sides of the bases, and each base comprises a fixed plate. The bottom of the three-coordinate measuring machine is provided with a plurality of bases, the upper portion of each base is provided with a rubber pad and a spring, the upper portion of each base is provided with a fixing plate, the middle portion of each fixing plate is provided with a movable column through a first nut, the lower portion of the circumference of each movable column is provided with a rubber pad and a spring, the bottom of each movable column is fixedly provided with a base plate, and the lower portion of each base plate is provided with a supporting seat. And in cooperation with the damping effect of the rubber pad, energy absorption and shock absorption can be achieved when the three-coordinate measuring machine works, and a good working environment is provided for working of the three-coordinate measuring machine.

A geological exploration equipment support belongs to the technical field of geological exploration equipment and comprises a base, a plurality of brake wheels movably mounted at the bottom end of the base, a lifting assembly mounted on the top surface of the base in a matched manner, a moving plate mounted at the top end of the lifting assembly, an angle adjusting assembly mounted on the top surface of the moving plate, and a placing plate movably mounted at the top end of the angle adjusting assembly. Tilt angle sensors are fixedly mounted at four corners of the top surface of the placement plate, a placement box with an opening in the top surface is fixedly mounted on the top surface of the placement plate, and the placement plate is adjusted to be in a horizontal state, so that geological exploration equipment above is in a horizontal state, and data errors caused by inclination during exploration are avoided; in addition, the tripod does not need to be adjusted after each supporting leg is opened like a tripod in the prior art, and the tripod is more convenient to move compared with the tripod.

The utility model relates to a hydrogenation kettle, in particular to a hydrogenation kettle continuous discharging liquid level control device which comprises a bottom plate and a hydrogenation kettle installed at the upper end of the bottom plate, a discharging box located on one side of the hydrogenation kettle is installed on the upper end face of the bottom plate, and the inner center of the discharging box is fixedly connected with a vertically-arranged sliding rod. A suspension plate is slidably connected to the lower portion of the outer wall of the sliding rod, a pressing ring slidably connected to the outer wall of the sliding rod is fixedly connected to the upper portion of the suspension plate through a plurality of connecting rods, a sliding block is slidably connected to the upper portion of the outer wall of the sliding rod, and a pressure sensor is installed on the lower end face of the sliding block; and an infrared distance measuring sensor is arranged in the mounting cavity. The device is simple in structure, the automation degree is improved, discharging is thorough every time, raw material residues are avoided, and practicability is improved; the discharging amount can be adjusted according to needs, and use is convenient.

The utility model discloses a ventilation device for mine safety production, which relates to the technical field of mine safety and comprises a base, supports are fixedly connected to the front and rear positions of the top end of the base, a cylinder is fixedly connected to the top ends of the two supports, and screens are fixedly connected to the front and rear sides of the cylinder. A first motor is fixedly mounted in the middle of the top end of the base, a rectangular box is fixedly connected to the middle of an inner cavity of the cylinder, and the output end of the first motor extends into the rectangular box. According to the ventilation device for mine safety production, dust, mineral powder and other particulate matter in air are filtered out through the filter plate in the ventilation process under the action of the filter structure, the particulate matter is prevented from polluting outside air, the brush is tightly attached to the surface of the filter plate and cleans the filter plate while rotating along with the first rectangular rod, and the ventilation effect is good. And the cleaned sundries fall into the collecting frame, and then the sundries can be further treated by drawing out the drawing box.

The utility model discloses an indoor environmental pollutant concentration detection device which comprises a box body, a detector body fixedly arranged in the box body, a display fixedly arranged on the front surface of the box body, an air storage tank fixedly arranged on the bottom surface in the box body, a bearing plate fixedly arranged in the box body, and a multi-section telescopic rod fixedly arranged on the upper end surface of the bearing plate, the gas storage tank is provided with a plurality of sections of telescopic rods, the upper end part of each section of the telescopic rods is fixedly provided with a gas collection box, the upper end of the gas storage tank is communicated with a gas pump, and the gas inlet end of the gas pump is communicated with an inner cavity of the telescopic rods through a hose. The air collection box is arranged in the air storage tank, and air enters the air collection box from the periphery at the same time, so that air at different heights and in different directions can be sucked into the air storage tank at the same time, the air from different positions is uniformly mixed in the air storage tank and then detected, and the indoor environment quality can be accurately reflected.

A watering and dust falling device for a construction site comprises a watering device, a dust suction device and a bearing device. The bearing device comprises a base and a dust suction device, the dust suction device comprises a box fixedly connected with the base, a dust collection box is fixedly connected into the box, a dust suction opening is fixedly connected to one side of the box, a connecting opening is formed between the dust suction opening and the dust collection box, dust enters the dust collection box through the connecting opening, and a filter plate is clamped between a top plate and a bottom plate of the dust collection box. Gas entering the dust collection box is filtered; the watering device comprises a water tank fixedly connected to the end, away from the box body, of the top of the base, a water pump is fixedly connected to the top of the water tank, and a hose is connected between the water pump and a fog gun barrel arranged at the top of the box body; and the filter plate is connected with an oscillator. The dust falling device has a dust collection function, effectively avoids mud mixing, is provided with the fog gun capable of freely turning and adjusting the height, and can realize large-range and multi-area dust falling operation.