104results about How to "Rainproof" patented technology

The invention provides a full-automatic library service station and an operation method thereof. The service station comprises a computer, a displayer, a printer, a keyboard, a library card reader, an identification card scanner, a library card transaction unit and a mechanical conveying device, wherein the computer serves as a main control unit; the displayer and the printer serve as information output units; the keyboard serves as an information input unit; the library card reader and the identification card scanner serve as information input equipment; the library card transaction unit is connected with the computer; the mechanical conveying device is controlled by the computer; the service station main body is a sealed cabinet body which comprises an operation platform and book shelves; the displayer, the keyboard, the printer, the library card reader, the identification card scanner and the library card transaction unit are positioned on the operation platform which is also provided with a book inlet and a book outlet; book separation columns are formed on the book shelves by clapboards; each book separation column corresponds to a piece of position information; under the control of the computer, the conveying device conveys books between the book inlet, the book outlet and the shelves by manipulators arranged per se.

The invention relates to a distribution box with the high dissipation performance and rainproof performance. The distribution box comprises a body, a heat dissipation chamber, a top face heat dissipation mechanism and a side face heat dissipation mechanism. The top face heat dissipation mechanism comprises a first motor, a worm, a worm wheel, a first rotating shaft, a first bearing and a baffle. The side face heat dissipation mechanism comprises an air cylinder, a rack and a side face heat dissipation unit. The side face heat dissipation unit comprises a plurality of side face heat dissipation assemblies. According to the distribution box with the high dissipation performance and rainproof performance, a top face heat dissipation hole and side face heat dissipation openings are formed, when it is fine, the heat dissipation hole is completely opened through the top face heat dissipation mechanism, and the heat dissipation openings are opened to the largest extent through the side face heat dissipation mechanism, so that heat is emitted out through the multiple large heat dissipation openings, and the high heat dissipation performance is achieved; when it rains, the top face heat dissipation hole is closed so as to prevent water leakage; meanwhile, an adjusting plate is rotated to a certain angle, the heat dissipation openings are opened to a small extent, raindrops are shielded while heat dissipation is performed, and the rainproof performance is achieved.

The invention discloses a silk-coating method for PVC / PU coating polyester industrial yarns and a device thereof. The method comprises the following steps: using polyester industrial yarns as raw materials and a core layer structure; adopting a PVC-coating adhesive as a surface structure; dipping the polyester industrial yarns in the PVC-coating adhesive so that the adhesive is stuck to the silk;extruding the silk; scraping the adhesive; then, winding the silk in a spiral shape and baking; and drying, cooling the dried silk by cold air and coiling so that the coating adhesive is deeply permeated and coated on the core layer structure to form the silk of the coating polyester industrial yarns. The composite silk material has the advantages of high strength, good toughness, corrosion resistance, aging resistance, and the like. A melting point of PVC, PU or PE coating adhesive on the surface is lower than that of core-layer polyester yarns, woven fabrics in a stretching state are baked at high temperature or thermally rolled, shaped and processed, and warp yarns and weft yarns are melted and fused by the coating adhesive so that mesh fabrics are integrally smooth and stiff and meshesare uniform and stable.

The invention provides an intelligent automatic switching sliding window. The structure of the intelligent automatic switching sliding window is composed of a window frame, window sashes and a screenwindow, wherein, the edge of a fixed window sash positioned at the outside of the window frame is fixed with the window frame through pins; the edge of the screen window positioned at one indoor sideis fixed with the window frame through pins; the window sash between the fixed window sash and the screen window is a movable window sash; a rack is arranged on a glazing bead on the inner side of themovable window sash; the two ends of the rack are provided with a limit switch; a window sash switching controller and a gear motor are arranged at the lower corner of the screen window in the middleof the window frame; and the axle part of the gear motor is provided with a gear which passes through the screen window and is meshed with the rack on the glazing bead fixed at the inner side of themovable window sash. Compared with the prior art, the intelligent automatic switching sliding window has the characteristics of reasonable design, simple structure, small volume, safety, reliability,convenient installation and usage, easy maintenance and the like, thus having good promotion and use values.

An automatic tracing type solar generator belongs to the technical field of solar electric power generation, which comprises a chassis, a supporting structure with a rotating shaft, a light concentrating thermal-collecting device, an accumulator, a driving device and an automatic tracing controlling device, wherein the supporting structure is connected on the chassis through a first driving device, the light concentrating heat-collecting device is mounted on the rotating shaft of the supporting structure and is connected with the supporting structure through a second driving device, the driving motor and the automatic tracing type controlling device of the two driving devices are electrically connected, and the light concentrating heat-collecting device is electrically connected with the accumulator. The invention has good property and long service life. The automatic tracing type lighting system combines input ends of four sensing devices to judge the position, which increases judging accuracy. The circuit is simple and reliable, power consumption is low, and cost is greatly reduced compared with a single-chip processer tracker. The invention effectively utilizes solar, which is nonpolluting, no discharging, saves energy and protects environment. A light collecting cover can automatically turnover upwards, has the function of snow resistance, rain resistance and automatic protection, and effectively protects the damage of a motor.

The invention discloses an intelligent clothes airing device. The intelligent clothes airing device comprises a stand column, a cross bar, a clothes airing rack and a control system. A first electrical machine is arranged on the stand column, a first pulley and a second pulley are arranged above the cross bar, and a steel wire rope is arranged between the first electrical machine and the clothes airing rack. A wire wheel is arranged at an output shaft of the first electrical machine, and one end of the steel wire rope is wound on the wire wheel. The other end of the steel wire rope winds though the first pulley, the clothes airing rack and the second pulley in sequence to be fixed on the wire wheel. The clothes airing rack comprises a cylindrical rack body and an annular clothes rack which is arranged on the cylindrical rack body, the annular clothes rack is arranged on the cylindrical rack body through a connecting shaft, and the upper end of the cylindrical rack body is connected with a second electrical machine. The control system comprises a tension sensor, a temperature sensor, a light sensor, a position sensor and a controller. The intelligent clothes airing device has a rain-proof function and a sun-proof function, the intelligent clothes airing device can further achieve automatic rotation when clothes are aired and automatic taking back after the clothes are dry, and the problem that damage of the clothes caused by the clothes not taken back for a long time is effectively avoided.

The invention relates to anti- virus flame-retardant electromagnetic shielding composite material, a preparation method and a product. The anti- virus flame-retardant electromagnetic shielding composite material is sequentially prepared from a low-frequency shielding layer, a barrier layer and a low-high-frequency shielding layer from outside to inside, wherein all layers are sequentially connected together through adhesives; the low-frequency shielding layer is prepared from flame-retardant metal fiber blended fabric; the barrier layer is prepared from at least one of PA (Polyamide), PET (Polyethylene Terephthalate) or EVOH (Ethylene-Vinyl Alcohol Copolymer); the low-high-frequency shielding layer is prepared from copper-nickel coating fabric. According to the anti-gas flame-retardant electromagnetic shielding composite material disclosed by the invention, the gram weight per square meter is 100 to 700 g / m<2>, the protection time on mustard gas is up to 72 hours or more, the electromagnetic shielding performance within a frequency band of 200 MHz to 40 GHz can be up to 70 dB or more, the shielding performance of the low-frequency within a frequency band of 100 KHz to 20 MHz can be up to 20 dB or more, the afterflame time is less than or equal to 10 seconds, and the smoldering time is less than or equal to 10 seconds. The product which is prepared by adopting the anti-gas flame-retardant electromagnetic shielding composite material integrates biochemical protection, electromagnetic shielding and flame retardancy into a whole, and can more meet cutting-edge requirements in military and the like.

A landfill method for strengthening ventilation and reducing the drainage of methane by taking advantage of wind power relates to a quasi-aerobic garbage landfill process. The landfill method is characterized in that a wind housing (1) is mounted at the tail end of a percolating liquid collecting main pipe (4), wherein, the ratio of an inlet diameter and an outlet diameter equal of the wind housing (1) ranges from to 8:1 to 4:1; a wind cap (2) is mounted at the top end of a vertical air duct (3) and rotates under double drive of external natural wind and difference between internal temperature and external temperature of a landfill body, so as to generate negative pressure and centrifugal force, continuously draw out landfill air in the air duct (3), drive the wind cap (2) at the tail end of the percolating liquid collecting main pipe (4) to continuously suck outside air into a garbage body, thereby forming a sustaining and efficient ventilating system, promoting aerobic decomposition and stability of garbage, and greatly reducing methane discharge. The method consumes no power, thereby greatly reducing the discharge of the quasi-aerobic garbage landfill methane and achieving the energy conservation and the drainage reduction. The invention has the advantages of simple process, convenient disassembly and assembly, low cost, and can be widely applied to domestic garbage landfill yards.

The invention discloses a method for producing a waterproof moisture permeable fabric with functions of moisture permeating and water proofing, which comprises the following steps: firstly, soaking a fabric into a soaking groove filled with Teflon waterproof agent for 1 to 2 minutes, and then drying and baking the soaked fabric; next, calendering the fabric, and then coating bottom adhesive on the calendered fabric surface; and finally, coating surface adhesive on the surface of the surface of the fabric bottom adhesive, wherein the bottom adhesive consists of 100 portions of polyfluortetraethylene, 10 to 15 portions of toluene, 10 portions of polyacrylate, 3 to 5 portions of cross-linking agent, and 1 to 2 portions of accelerating agent in portion by weight; and the surface adhesive consists of 100 portions of polyfluortetraethylene, 10 to 15 portions of toluene, 10 portions of polyacrylate, and 2 portions of smooth anti-sticking agent in portion by weight.

The invention discloses a magnetic coding lock cylinder and magnetic coding padlock capable of bearing severe environment, aiming at providing a magnetic coding lock cylinder and magnetic coding padlock which have good weathering resistance and high controllability and can bear severe environment. The magnetic coding lock cylinder of the invention comprises a lock cylinder shell (1), an upper cover (2), a bottom cover (3), a latching column (4), a sealing shrapnel (5), a plurality of latching blocks (6) and a plurality of permeable monopoles; wherein the permeable monopoles are arranged in thegap between the latching column (4) and the latching blocks (6), an unlocking position is arranged in the gap while the rest is locked position; the latching column (4) and the latching block (6) rotate relatively when the permeable monopoles is in the unlocking position; and the permeable monopoles (7) block the relative rotating of the latching column (4) and the latching block (6) when the permeable monopoles (7) is in the locked position. The invention is widely applied to the magnetic coding lockset field.

The invention relates to an air inlet / exhaust combined air port, and particularly discloses an energy-saving air inlet / exhaust combined air port. The combined air port comprises an air inlet entrance pipeline, an air inlet pipeline and an air exhaust pipeline, wherein the air inlet pipeline is located in the air exhaust pipeline; a connection groove is arranged at the end part of the entrance endof the air inlet pipeline; the bottom end of the air inlet entrance pipeline is arranged in the connection groove; a rotary blade is fixed on the air inlet entrance pipeline; and the orientation of the rotary blade is opposite to that of the entrance of the air inlet entrance pipeline. Due to the unique design of the air inlet / exhaust combined air port, the air inlet entrance always faces to the coming flow, and the air exhaust waste heat can be utilized to save energy; and moreover, the combined air port also adopts an unpowered air cap to perform air exhaust so that the air exhaust is smoother and energy loss is reduced.

The invention discloses a conductive rail type mobile monitoring robot, a monitoring system thereof and a method thereof. The monitoring robot comprises a robot vehicle body. An image pick-up device is fixed on the vehicle body. The robot vehicle body is installed on a walking track, and is limited in the up-down and left-right manner. The walking track is in the horizontal state and penetrates through the robot vehicle body. A walking wheel is rotatably supported in the robot vehicle body. The walking wheel is in contact with the upper end face of the walking track. The walking wheel is fixedly connected with a driving motor. The driving motor is used for driving the walking wheel to rotate, so that the vehicle body can walk and move along the walking track. The driving motor and the image pick-up device are electrically connected with a control system. A conductive rail is fixed on the walking track. A carbon brush is fixed on the vehicle body. The carbon brush is in sliding contactwith the conductive rail on the walking track to be in electric connection with the conductive rail. The carbon brush is electrically connected with the driving motor, the image pick-up device and thecontrol system. In this way, an external power supply electrically connected with the conductive rail supplies power to the monitoring robot. The full-visual-angle monitoring can be achieved, and clear video images are provided. Meanwhile, the target point video information is accurately acquired, and an alarm is automatically given.

The invention discloses an electronic equipment chassis and a radiating method thereof. By carrying out a splitting design to the installation of the electronic equipment chassis and a radiating part of a fan, the electronic equipment is arranged in a sealed area; a heat and good conductor material is adopted to tightly connect the sealed area and a radiating area in a back-to-back mode; the heat generated by the electronic equipment in the sealed area is taken away by the fan in the radiating area, thus reducing the temperature of the working area of the electronic equipment, namely, the sealed area, and realizing the purpose of radiating heat with high efficiency. The electronic equipment chassis can lead the electronic equipment to have the characteristics of dust prevention, rainproof performance and good electromagnetic compatibility.

The invention provides an intelligent double-layer garage. The intelligent double-layer garage structurally comprises a garage base system, a garage main body and a garage moving power system, wherein the garage base system is fixedly arranged on a hard ground with the slope being smaller than 7 degrees, is used as a foundation of the garage main body and is used for being matched with the moving power system to move the garage main body in a fixed direction; the garage main body is used for storing a square-shaped frame structure of a vehicle and is movably arranged on the garage base system; a vehicle support convenient for up-down movement is arranged in the garage main body by a lifting power system of the support, and divides the internal space of the square-shaped frame structure into an upper layer and a lower layer which can be adjusted; the top part of the garage moving power system is fixedly arranged on the garage main body, the lower part of the garage moving power system is movably connected with the garage base system, and the garage main body utilizes the garage moving power system to move in a fixed direction on the garage base system. The intelligent double-layer garage with the up-down three-dimensional effect is an effective method for solving the shortage of the garages in a most direct, most practical and farthest manner for the space situation of city construction, community setting and the two sides of roads formed in a long time.

The invention discloses an anti-infrared-monitoring waterproof and flame-retardant polyamide fiber fabric preparation process. The anti-infrared-monitoring waterproof and flame-retardant polyamide fiber fabric preparation process solves a problem that the prior art can not find a good flame-retardant dyeing and finishing mode for synthetic fiber fabrics such as polyamide fibers. The anti-infrared-monitoring waterproof and flame-retardant polyamide fiber fabric preparation process comprises the steps that (1) grey fabric is turned, cold-rolled, scoured, shaped, dyed and printed; (2) drying is conducted after printing; and then baking is conducted at a temperature of 160 DEG C and a vehicle speed of 50m / min; then steaming is conducted in the speed of 15 to 18m / min, temperature of 101 to 103DEG C; and then drying operation is conducted after steaming; (3) soaping is conducted, and then fixation treatment is conducted; (4) a finished product is prepared after reverse gluing is conducted,processes of the reverse gluing stentering are: using a coating squeegee to perform a gluing operation. An adhesive adopts fire-retardant adhesive TF-680B, and the flame-retardant adhesive TF-680B isalso provided with a paint yellow G-24, paint blue G-31, paint black G-51, smooth resin TF-399, cross-linking agent TF-694B, and thickener DM-5299. The anti-infrared-monitoring waterproof and flame-retardant polyamide fiber fabric preparation process has the advantages of high strength, good waterproof and flame retardant effects and the like.

The invention relates to a vehicular mobile power supply system for a communication base station. The vehicular mobile power supply system is characterized by at least comprising a main controller, a vehicular power supply transformation unit, a single battery detection unit, a single battery repairing unit, a solar power supply unit, a vehicular environmental detection unit, a vehicular power detection unit, a vehicular positioning unit, a vehicle wireless communication unit and a vehicular power unit. The vehicular mobile power supply system disclosed by the invention has the characteristics of being convenient to use, energy-saving, environment-friendly and complete in function; the vehicular mobile power supply system can be used as an emergency standby power supply when the power supply system of the base station is failed; and particularly, the vehicular mobile power supply system can be used for maintaining the power supply system of the base station.

The invention relates to a multifunctional gas bead gel coat, which comprises sleeves(10), a collar(20) and a body(30) and is made of airtight fabric(1) and a plurality of air sacs(2) made of the same material as the airtight fabric and arranged at the lower side of the airtight fabric(1) and combined with airtight fabric(1) as a whole body, wherein, the airtight fabric(1) and the air sacs(2) are made of flame retardant adhesive film. The invention is characterized by the anti-wind, anti-rain, anti-snow, anti-hail, anti-stumbling, anti-drowning functions , and especially being suitable for being used as winter clothing, raincoats, learning swimsuits, lifejackets, and ski-wear of children. If a metal film is added at the side next to the human body, an effect of insulation is increased; by using double-sided glue paper, the cutting method of the invention includes: at first, the fabric is fixed on a cutting bed; then the double-sided glue paper is stuck between the upper layer of the fabric and the lower layer of the fabric to form a multilayer; at last, a cutting paperboard sample is stuck at the top layer of the fabric and the fabric is cut according to the sample; tablet fabrics which are cut are blended and welded into the coat by a welding machine. The method has the advantages of simple operation and low cost.

The present invention discloses an antenna. The antenna comprises an antenna body and support arms configured to connect with two ends of the antenna body. Wind screen panels with arc-shaped surfacesand guidance top ends configured to guide a wind direction are arranged at the external portion of the antenna body, a cylindrical cavity body is encircled by the wind screen panels and the guidance top ends, the antenna body is located in the cavity body, connection pieces are arranged between the cavity body and the antenna body or the support arms and are configured to perform connection between the cavity body and the antenna body or the support arms, and the cavity body is vertically arranged and perform fixed-axis rotation motion around an axis itself. The antenna is simple in structureand convenient to install and regulate, greatly reduces a wind resistance coefficient, reduces stress in the antenna, facilitates protection of the structure of the antenna, and is long in service life; and the antenna has rain-proof, dustproof, thermal-insulation and heat-retaining performances, can perform normal working in a rugged environment, and has a wide application range. A single antennais small in stress, a communication base station employing the antenna can arrange a plurality of antennas, and therefore, radiation range and precision of the communication base station is enhanced.

The invention discloses a pest killing device convenient to clean. The pest killing device comprises a conical solar power generation board, a storage battery, a first fixing plate, a lamp tube, a second fixing plate arranged under the first fixing plate in the vertical direction, a power grid composed of N iron wires, a base connected with the second fixing plate, a pest collecting bag connected with the base, and M cleaning sleeves which are cylindrical. The base is provided with a through hole, a sucker is connected to the left side of the base in the horizontal direction, and the M cleaning sleeves are arranged on the outer surfaces of the iron wires in a sleeved mode and connected with an insulation rod. The pest killing device has the technical advantages of being convenient to clean, capable of effectively preventing rain, long in service life, and convenient to use.

The invention discloses an outdoor waterproof weather-proof wave-absorbing material and a preparation method thereof. The outdoor waterproof weather-proof wave-absorbing material is prepared by using a porous polyurethane sponge wave-absorbing material as a matrix, and coating a layer of completely closed flame-retardant rainproof coating on the outer surface of the matrix, wherein the flame-retardant rainproof coating is prepared from the following components in parts by weight: film forming matter: 28-30 parts of fluorocarbon emulsion and 26-32 parts of pure acrylic emulsion, pigment packing: 4-6 parts of titanium dioxide, fire retardants: 8-10 parts of aluminum hydroxide, and 5-8 parts of ammonium polyphosphate, 0.4-0.5 parts of a dispersing agent, 0.4-0.5 parts of a defoaming agent, and 15-27 parts of deionized water. The outdoor waterproof weather-proof wave-absorbing material has the characteristics of flame retardance, rainwater prevention and weather resistance.

The invention discloses a movable and modularized grain post-harvest processing device, and mainly solves the problems that grain processing and storing equipment is not perfected and the storing quality of grains is not good in the prior art. The movable and modularized grain post-harvest processing device comprises a first module, a module group, a second module and a fifth module, wherein the top of the first module is detachably connected with the bottom of the module group; the top of the module group is detachably connected with the bottom of the fifth module; the top of the module group is detachably connected with the bottom of the third module; the first module is used for storing grains, discharging grains and ventilating; the third module is used for sealing the stored grains and ventilating; the fifth module is used for removing impurities in the grains; the module group is composed of a plurality of module units which are detachably connected in sequence; the module units are formed by detachably connecting a plurality of second modules in sequence. By the scheme, the movable and modularized grain post-harvest processing device disclosed by the invention achieves the aims of processing and storing grains perfectly and good grain storing quality.

The invention provides a closed storage warehouse. The closed storage warehouse is provided with a closed warehouse shell and is a single-span warehouse or a multi-span warehouse which is formed by connecting a plurality of single-span warehouses, and each single-span warehouse comprises a material field positioned in the warehouse shell, a retaining wall, a material input system and a material output system, wherein the retaining wall, the material input system and the material output system are arranged in the material field, the retaining wall is erected on the ground of the material field,and the material input system is arranged at the top of the retaining wall and comprises a warehouse entering belt conveyor, a discharging trolley advancing track and a discharging trolley which is arranged on the discharging trolley advancing track and connected with the warehouse entering belt conveyor; and at least one side of each retaining wall is provided with the corresponding material output system, and each material output system is separated from the retaining wall and comprises a reclaimer advancing track arranged on the ground of the corresponding material field, a scraper reclaimer arranged on the reclaimer advancing track and an ex-warehouse belt conveyor arranged on the ground of the material field and connected with the scraper reclaimer. According to the closed storage warehouse, the requirement of the scraper reclaimers for the deformation of the retaining wall can be eliminated, the retaining wall structure is simplified, and the construction cost is reduced.

The invention relates to a spray covering process of solid pollution sources. The solid pollution sources include refuse landfills, sludge stockpiling sites, industrial waste stacking sites, mineral tailings ponds or solid pollution sources formed by contaminated sites. The spray covering process includes the steps that a curing base material, a curing agent and a solvent are mixed to form a highviscosity paste composite material, and the surfaces of the solid pollution sources are covered by uniform spraying of spraying equipment. According to the spray covering process, diversion of rain and sewage from solid pollution source piles or sites is realized, sewage generation caused by rainwater mixing is reduced remarkably, and safety of soil and groundwater in stacking sites is ensured; meanwhile according to stink source piles, the odor isolation (deodorization) effect is good, and friendly environment is achieved; and furthermore, the functions of fire prevention, dust prevention andseepage prevention are achieved, application is wide, and practicability is high.

The invention relates to the field of transport vehicles, in particular to a refrigerated container. The refrigerated container comprises a container frame as well as left front, left rear, right front and right rear wing plates, front and rear container doors, container foots, a hydraulic system and a generator set which are mounted on the container frame, wherein the container frame adopts a container type structure, the wings plates are hinged on left and right sides of the container frame through wing plate hinges, the front and rear container doors are hinged on front and back surfaces of the container frame through container door hinges, and the container feet are mounted below the container frame. The hydraulic system controls and drives the left front, left rear, right front and right rear wing plates to unfold upwards and fold downwards, the front and rear container doors are opened downwards and closed upwards, and the container feet extend and is lifted. The refrigerated container is convenient to operate, labor-saving and quick, cargo loading and unloading can be performed simultaneously in multiple directions, cargos in all positions of the container can be directly unloaded without cargo exchange, the cargo loading and unloading efficiency is improved, the labor intensity of operators is reduced, the utilization rate of the inner space of the container is increased, and the generator set is arranged and can directly drive refrigeration equipment to work.

The invention discloses a large-span strut-free energy-saving sunlight greenhouse which comprises a roof frame formed by connecting a plurality of arc-shaped arched beams through a plurality of transverse pull rods, wherein a heat preservation film-coated felt with an upward rough surface is arranged at the upper part of the roof frame; a wrapping film-coated felt is arranged on the heat preservation film-coated felt in a manner that the rough surface of the wrapping film-coated felt is downward; a forwards unfolded front slope heat preservation quilt and a backwards unfolded rear slope heat preservation quilt are arranged on the wrapping film-coated felt; greenhouse films are mounted on two sides of the heat preservation film-coated felt at the upper part of the roof frame through transverse clamping slots and longitudinal film clamping slots; and insect-proof nets and air discharging films are arranged at the front and rear lower parts of the roof frame. The large-span strut-free energy-saving sunlight greenhouse is reasonable in structure, high in heat preservation property and high in ventilating speed, and the heat preservation quilt is difficult to weather and long in service life.

The invention discloses a smart earth resistor on-line monitor system which comprises a data acquisition module for data acquisition, a microprocessor which processes the data of the data acquisition module and is connected with a monitoring unit, a first temperature sensor for acquiring temperature data of a microprocessor electric control plate, a second temperature sensor for acquiring the external temperature data of the monitor, a GPS positioning module for positioning the system electric control plate, and a ground voltage acquisition module and a ground current acquisition module for acquiring thunder electric signal data. The system has the advantages of on-line test, non-contact measurement, ground wire crossing a core, requiring on self monitoring, real-time monitoring, data transmission through wired or wireless communication and remote on-line monitoring. The system also has rainproof, dustproof, high and low temperature resistant, anticorrosion and flame retardation properties, and ensures high precision, high stability and high reliability of outdoor and indoor long-time on-line monitoring and long-time on-line monitoring under a mine.

The invention discloses a cover belt type conveyor. A tail turnabout drum and a tailstock are fixed through bolts, a head transmission drum and a headstock are fixed through bolts, an H-type supporting leg is fixedly provided with an intermediate frame, two side sealing covers and cover belt supporting plates, access doors are installed on the two side sealing covers, the cover belt supporting plates on two sides of the conveyor are covered by adhesive tape in a flatly laid mode, a throw-off carriage is installed on the conveyor, and tracks for moving of the throw-off carriage are arranged on two sides of the conveyor. The cover belt type conveyor can form a sealed space, materials can be conveyed in the sealed space, the throw-off carriage is installed on the cover belt type conveyor and moves and discharges along the tracks on the two sides of the conveyor, and the cover belt type conveyor has the advantages of preventing dust from overflowing, reducing environment pollution, and preventing rain, snow and wind.

The invention discloses an intelligent pressure relief device. The intelligent pressure relief device comprises a base, a positive-pressure valve cover, a negative-pressure valve cover and a spring, wherein the positive-pressure valve cover is rotationally connected with one side of the base; when the positive-pressure valve cover is closed, the positive-pressure valve cover and the base are in sealing fit; the negative-pressure valve cover is positioned at the inner side of the positive-pressure valve cover, and is smaller than the positive-pressure valve cover; the negative-pressure valve cover is connected with the positive-pressure valve cover through the spring; a hole is formed in the positive-pressure valve cover; and when the negative-pressure valve cover is closed under the effect of spring force, the hole is covered. The intelligent pressure relief device can realize two-way pressure relief thereof through the fit between the positive-pressure valve cover and the negative-pressure valve cover through the spring and the like, and further comprises a control system to realize such functions as remote control, ventilation and pressure re-relief.

The invention provides a fire extinguishing plug for cable trench internal fire early warning and automatic alarm. The fire extinguishing plug is characterized by comprising a data display and acquisition module, an alarm module, a sensor group, an aerosol fire extinguishing module, a communication module and a fire extinguishing plug body. The extinguishing plug body provided by the invention hasthe functions of rain prevention, dust prevention and lightning protection. The upper part of the fire extinguishing plug body are provided with display and alarm devices, and a side face of the fireextinguishing plug is provided with a maintenance door to facilitate the maintenance and repair of the fire extinguishing plug. The front side of the fire extinguishing plug is provided with a switchbutton for controlling the display parameters of the display device to be switched between gas concentration and temperature, a seam of the maintenance door is subjected to special processing so as to ensure the waterproof and dustproof performance of the seam. With the consideration of high temperature in summer and low temperature in winter, different alarm and fire extinguishing data combinations are set for the temperature and mixed gas concentration, and false alarm and missed alarm are effectively avoided. Through setting the system power supply, the high reliability and high stabilityof a power supply system of the fire extinguishing plug are ensured.