107results about How to "Improve automation control" patented technology

The invention discloses a control method for quickly and accurately positioning a steel coil dolly. The method comprises the following steps of: computing position setting values of a moving direction and a lifting direction of the steel coil dolly according to known equipment parameters and relevant parameters detected by a position sensor, designing a running speed slope curve of the steel coil dolly according to the position setting values and the production actual requirement, defining the proportional relation between the position and the speed, building a position closed-loop control system, eliminating the influence of the inertia of the steel coil dolly on the positioning precision by an inertia compensation method, guaranteeing the rapidity of a positioning process by a method for setting minimum speed, and finally carrying out PLC (programmable logic controller) programming design. The control method is high in control precision, quick in positioning process, smooth in speed change, and convenient for engineering application and equipment maintenance.

This invention relates to a method for producing construction gypsum powder from ardealite. The method comprises: (1) prehomogenizing ardealite waste residue, placing in a continuous high-efficiency calcining kiln, and calcining; (2) taking out and aging naturally for 7-15 d; (3) milling into 100-200 mesh powder. This invention uses a unique calcination technique to produce high performance construction gypsum from ardealite waste residue, and has such advantages as no secondary pollution and saved water resource.

This invention relates to garbage collection stop with remote control and diagnose device, which comprises the following: multiple garbage compression stops; garbage process and control device, remote diagnose servo, remote management and control end and inter processor. The said control device is located on the compression stop and is connected to the hydraulic pressure and electron device in the compression stop. The said garbage control device is used as remote control terminal and is connected to the remote management control terminal through wire or wireless diagnose servo.

The invention discloses a real-time monitoring method for the three-dimensional space operating posture position of a scraper conveyer. The real-time monitoring method comprises the steps that under the condition of the complex working condition that bottom plates of coal mine down-hole fully mechanized mining faces are not flat, pitch angles and course angles of all middle grooves of the scraperconveyer are accurately detected through a morphological calculation method; and through the coal mining machine body pitch angles and course angles and coal mining machine position information whichare obtained during operating of a coal mining machine on the scraper conveyer through calculation, a mathematical model is calculated through the built three-dimensional morphology, the actual morphology of the scraper conveyer conduct fully mechanized mining on the horizontal working face and the vertical working face is obtained in a calculating system, and thus the three-dimensional space actual operating posture position of the scraper conveyer is displayed in a monitoring system. According to the real-time monitoring method, the dynamic fluctuant change of the scraper conveyer on the vertical working face and the horizontal working face can be monitored in real time, a large quantity of sensors do not need to be mounted, thus the situation that the scraper conveyer is damaged due tothe large bent angle can be avoided, normal work of the scraper conveyer is ensured, the information is provided for height adjusting of a lower roller of the coal mining machine and pushing of a hydraulic support, and operating reliability of the scraper conveyer for the fully mechanized mining faces is ensured.

The invention relates to a material testing equipment, in particular, it relates to a hydrogen storage alloy testing equipment. It is formed from reaction chamber, hydrogen gas circulation system and liquor circulation system, in which between reaction chamber and hydrogen gas circulation system a quick joint is used to implement closed connection, the hydrogen gas circulation system can make the hydrogen gas be continuously circulated between the reaction chamber and hydrogen gas circulation system, and said liquid circulation system can make the constant temperature liquids with different temperatures be alternatively circulated between the opened container and oil bath so as to make the hydrogen storage alloy implement alternative circulation of absorbing and releasing hydrogen. In the course of hydrogen gas and liquid circulation the control and data acquisition system can be used for acquiring and processing data, and outputting signal to control system to make test.

The invention relates to the heating field, in particular to a multi-functional water heating machine and a work method thereof. The multi-functional water heating machine comprises a water storage tank, a water pump, a heater, a first water pipe, a heat radiator, a second water pipe, a third water pipe, a mattress, a fourth water pipe and a circuit board, wherein a water filling port is formed at the top of the water storage tank; the water pump and the heater are respectively connected with the circuit board; the third water pipe is arranged in the mattress; the water storage tank and the heater are respectively connected with the water pump; the heater is connected with the heat radiator; and the heat radiator and the third water pipe are respectively connected with the second water pipe. The work method comprises the following steps: in heating, radiating heat by the heat radiator so as to heat a room; heating the room through the heat radiation of the third water pipe; and delivering water evaporating in the water storage tank to the room through the water filling port so as to increase the humidity of the room. The multi-functional water heating machine provided by the invention has multiple functions, and can be used for indoor heating, bedding heating as well as room humidity maintaining.

The invention discloses an electric control system for oil-gas lubrication, comprising a PLC (programmable logic controller) main control cabinet of a lubricating main station, a lubricating oil monitoring sensor, a lubricating pump oiling device and an electromagnetic valve, wherein the PLC main control cabinet is provided with a PLC; the lubricating oil monitoring sensor is connected with the PLC main control cabinet and transmits acquired signal data to the PLC controller; and the PLC controls the lubricating pump oiling device and the opening and closing of the electromagnetic valve according to the acquired signal data. After the technical scheme is adopted, the electric control system has the advantages of high automation degree, simplicity and easiness in operation, convenience in maintenance and installation, low energy consumption and perfect alarming.

The invention discloses a method for treating waste water from copper smelting by using modified ardealite, which comprises the following steps: (1) preparing modified ardealite: adding modifiers into the ardealite and mixing uniformly, wherein the modified ardealite comprises 55 to 65 percent of ardealite, 25 to 45 percent of fly ash and 5 to 10 percent of quick lime; (2) absorption: adding the modified ardealite into the waste water from copper smelting according to a ratio of 10Kg / m<3>, mixing, stirring, contacting for one hour, filtering, and detecting the content of copper ions, zinc ions, cadmium ions and other ions of the treated filtrate; and (3) absorbent treatment: settling, dehydrating and drying the absorbent so that the absorbent can be used as a building material.

A method is disclosed in which data is exchanged via a bus coupler (500) between a network (410) designed for transmitting Ethernet telegrams and a lower-level bus system (420), wherein the bus coupler (500) is connected via a first interface (520) to the network (410) and via a second interface (530) to the lower-level bus system (420), and wherein process data is read in and / or output through at least one bus node (610, 620, 630) of the lower-level bus system (420).Furthermore, a bus coupler (500), a bus node (610, 620, 630), and a control system (10) that are designed for execution of the method are disclosed.

The invention relates to a method in the process of manufacturing and / or finishing a fibre web, in which method said continuous and moving web, and / or a moving means related to the processing of the web, is monitored by at least one optical spectrum separating measurement device to determine at least one quality variable of said object for the purpose of controlling the quality or condition. According to the invention, spectral data is collected in synchronization with the movement from the object which is being examined and is in a progressive and / or rotating movement, by measuring electromagnetic radiation, which has been transmitted, reflected, or otherwise emitted by the object, in a temporally and spatially resolved manner. On the basis of this spectral data, a two-dimensional quality variable chart is formed, which is substantially continuous in the direction of movement of the object and presents at least one quality variable of the object, and in order to determine the characteristics of the object and / or to detect defects in the object from said continuous quality variable chart, local deviations and / or discontinuities are detected in said continuous quality variable chart, especially in the direction of movement. The cause of these deviations and / or discontinuities is identified on the basis of the periodicity of said phenomena in the direction of movement.

The present invention is a detection method and detecting system for the rodent sports ability, which is characterized in that the detecting system comprises an experimental box made by a metal grid bottom plate and an organic glass plate, a video camera, a computer, a computer system and detecting software. Through the video camera arranged outside the experimental box, the rodent is placed in the experimental box and the rodent is able to walk on the metal grid bottom plate. Number that the rodent fall from the metal grid bottom plate of the experimental box is counted. Therefore damage degree of the rodent sports ability is reflected. Image data of the rodent walking process is input into the computer through the video camera. The detecting software of the computer can perform the automatic identification, detection, analysis and record. The present invention improves experimental condition and provides an urgently required detection method and detecting system in the field for a long period. The present invention possesses advantages of high degree in automatic control and detection, accurate record, reliable detecting data.

The invention belongs to the technical field of chicken farm environment monitoring and disease forecasting systems and control methods, in particular to the chicken farm environment monitoring and disease forecasting system and the control method thereof. The chicken farm environment monitoring and disease forecasting system and the control method thereof mainly solve the problems that the chicken farm is low in automatic control efficiency and does not have a disease forecasting function. The chicken farm environment monitoring and disease forecasting system is composed of a control host, a human-computer interface, a short message sender, a short message receiving terminal, a temperature and humidity sensing transmitter, an ammonia concentration sensing transmitter, a ventilator, a water curtain machine, an ammonia eliminating machine and a heating boiler, the signal output ends of the temperature and humidity sensing transmitter and the ammonia concentration sensing transmitter are connected with the input end of the control host, the control host is connected with the human-computer interface and the short message sender through communication cables, the short message sender is connected with the short message receiving terminal, and the output end of the control host is further connected with controllers of the ventilator, the water curtain machine, the ammonia eliminating machine and the heating boiler to control the work of the ventilator, the water curtain machine, the ammonia eliminating machine and the heating boiler.

The invention relates to the field of hydraulic pressure and the field of automatic electric control, and in particular to a control system of a vehicle-mounted hydraulic support leg and a control method. The control system comprises a support leg oil cylinder; the control system comprises a hydraulic pump, a motor, a controller and a sensor; the hydraulic pump is connected with the controller andthe motor; the controller provides driving energy through an energy storage power supply; an oil inlet of the hydraulic pump is connected with a hydraulic oil tank capable of providing oil; an oil outlet of the hydraulic pump is respectively connected with a one-way valve and a safety valve; the safety valve is connected with the hydraulic oil tank through a hydraulic oil pipe; the one-way valveis connected with a reversing valve; an oil access port of the support leg oil cylinder is connected with the reversing valve through a balance valve mechanism; and the controller is connected with the sensor. Compared with the prior art, continuous and efficient current output is provided; through a control policy of reducing the rotating speed, reliability and safety are improved, and the automatic control capacity is improved; and through high cooperation of the sensors, multifunctional protecting policies are achieved, and the work under various working conditions is realized.

The invention relates to a quantitative grease injection device for an automobile sunvisor rotating mechanism. The device comprises a grease barrel (1), a grease pump (2), a bracket (3), a quantitative valve (6) and a control switch (8) which are fixed on the bracket (3), and an injection head (7) which is connected with the outlet of the quantitative valve (6), wherein the inlet of the grease pump (2) is communicated with the grease barrel (1), and the outlet of the grease pump (2) is communicated with the inlet of the quantitative valve (6); and the quantitative valve (6) is connected with the control switch (8). Compared with the prior art, the device has the advantages that: the device can quantitatively and uniformly inject grease at a fixed position, so that uniform grease is left between a rotating shaft and the inner wall of a fixing clip, a sunvisor is flexible, stable and noiseless and has high rotating durability during operation, yield is improved, the labor intensity of workers is reduced, and production cost is reduced.

The invention relates to the technical field of cable assembly and provides a quick wiring device for a multi-core cable and an operation method, and aims to solve the problems that the quality of cable wiring does not reach the standard and threatens the operation safety of the whole system, and the quick wiring device comprises a workbench and a plurality of supporting legs installed on the edgeof the lower end of the workbench; the upper end of the workbench is provided with an inverted U-shaped frame; the inner top wall of the frame is provided with a wiring mechanism, and the upper end of the workbench is provided with an alignment mechanism used for butt joint of multiple strands of wire cores in the two cables; the alignment mechanism comprises two sliding seats which are symmetrically installed at the upper end of the workbench in a sliding mode, alignment seats are horizontally installed at the upper ends of the sliding seats, and wire grooves used for containing cables are formed in the upper ends of the sides, opposite to each other, of the two alignment seats. The quick wiring device is especially suitable for rapid wiring of the multi-core cable, and has high social use value and application prospect.

The invention relates to a forest automatic fire prevention system. The system comprises tracks, the multiple tracks divide a forest circle into different areas, multiple smoke detection units are distributed in each area, each smoke detection unit comprises a signal projector, and each track is provided with a fireproof trolley; the front end of each fireproof trolley is provided with rotary cutting blades, one side of each fireproof trolley is provided with mud loosening planers, and the other side of the each fireproof trolley is provided with sprinklers; a ditch is arranged along each track, a water inlet pipe port of each sprinkler is located in the corresponding ditch; each fireproof trolley is internally provided with a diesel engine, each diesel engine provides power for the corresponding cutting blades, the mud loosening planers, the sprinklers and the fireproof trolley, each fireproof trolley is internally provided with a control panel, the top of each fireproof trolley is provided with a solar panel and a signal receiver, starting switches of each signal receiver and diesel engine are both electrically connected with the corresponding control panel, and each solar panelsupplies energy for a circuit in the corresponding control panel. The forest automatic fire prevention system has the advantages that the automation degree is high, and the fireproof effect is good.

The invention relates to the technical field of electronics, in particular to an automatic control system of an intelligent stage lighting show and a control method of the automatic control system. The automatic control system comprises an intelligent stage control equipment body, a partition plate, a control box, a damping layer, a lifting column, a supporting table, a base, a display screen, a motor, a fixing rod, a cover plate and a storage cabinet. The partition plate is arranged in the intelligent stage control equipment body, the control box is arranged below the partition plate, the lifting column is arranged above the partition plate, and the supporting table is arranged above the lifting column. By adopting the technical scheme, the automatic control system has the advantages thatchoreography, lighting, scene matching and the like of the stage can be integrally controlled, the stage effect can be enhanced, automatic control over the lighting can be improved, unified and coordinated work of the stage and the lighting can be achieved, intelligence is higher, the occupied space of the control equipment is small, moving is convenient, and the automatic control system can adapt to various stage environments and is not prone to errors.

The invention provides tire bead production equipment. The tire bead production equipment comprises a rubber bar extrusion device for extruding out triangular rubbers of tire parts, a precutting device connected with the rubber bar extrusion device through a conveying module for conveying the extruded triangular rubbers to the precutting device for cutting, a bonding drum, an absorbing module arranged on the bonding drum and used for absorbing the triangular rubbers on the outer peripheral surface of the bonding drum, and a steel ring supply device for bearing steel rings and driving the steelrings to move in a direction near the bonding drum to bond the triangular rubbers with the steel rings, wherein a cutting conveying belt is arranged on the precutting device; a conveying surface of the cutting conveying belt corresponds to the bonding drum; and the cutting conveying belt is arranged in a lifting mode to drive the triangular rubbers to bond with the outer peripheral surface of thebonding drum. The tire bead production equipment solves the problem of low production efficiency of tire beads in the prior art.

The invention discloses a photoelectric equipment defense planning method and device, equipment and a storage medium, and the method comprises the steps: training a BP neural network through employing the existing trajectory data, and obtaining a trajectory model; designing a defense model of the photoelectric defense equipment according to the characteristics of the photoelectric defense equipment; establishing a weapon target confrontation situation map by using the trajectory model and the photoelectric defense equipment defense model; predicting the weapon target confrontation situation map by using a Monte Carlo tree search algorithm and a deep learning neural network algorithm, and training a deep neural network; predicting the trajectory parameters of the incoming missile at any time according to the input attributes of the incoming missile through the trained BP neural network; and solving an optimal defense strategy through the trained deep neural network according to incoming missile trajectory parameters and photoelectric defense equipment parameters. Therefore, the timeliness and complexity of photoelectric defense are effectively dealt with, incoming attack threats can be automatically dealt with, human-in-the-loop is reduced, and the automatic control of the photoelectric defense system is enhanced.

The invention relates to a circulating cooling water system and an operation method thereof. The circulating cooling water system provided by the invention is characterized in that a supplemented water quantity detection device is arranged between a water supplementing device and a cooling water circulator. By measuring the supplemented water quantity of the system, the addition quantity of a water treatment agent for maintaining the concentration of the water treatment agent in the system can be calculated. By using the circulating cooling water system and operation method provided by the invention, the difference between the actual concentration and set concentration of the water treatment agent in the circulating cooling water in the circulating cooling water system can be further reduced, thereby being beneficial to the stable and safe operation of the circulating cooling water system.

The invention discloses a horizontal cement slurry stirring system. The horizontal cement slurry stirring system comprises a horizontal ash tank, an upper stirring barrel, a lower stirring barrel, an operating chamber and a water tank. The water tank, and the upper stirring barrel and the lower stirring barrel are separately arranged on two sides of the operating chamber, and the tops of the operating room, the upper stirring barrel and the lower stirring barrel form a fixed plane; the ash tank is fixedly mounted on the plane through a plurality of supporting legs, a plurality of compartments are arranged in the ash tank, at least one ash outlet and an ash inlet are formed in the bottom of each of the compartments, the ash outlet is slope-shaped, and a weighing sensor is mounted at the bottom of each of the supporting legs. The system disclosed by the invention has the beneficial effects that the field occupied area is minimum, the height is reduced, the internal structure of a spiral conveyor is compact, and flying dust is reduced; and in addition, much automatic control is further increased, so that unmanned operations are truly realized.

The invention relates to an aquaculture oxygen adding pump monitoring system and a control method thereof, which are designed for solving the problem of poor design of an oxygen adding monitoring structure of an existing like product. The monitoring system comprises a strong current detection protection system, a signal control and alarm system and a remote communication prompting system, and is characterized in that an aquaculture oxygen adding pump control circuit of the strong current detection protection system comprises a time control main circuit part and a protection and alarm branch circuit part; oxygen adding equipment is provided with the protection and alarm branch circuit part independently; the strong current detection protection system and the signal control and alarm system are connected together through a fault alarm signal of an oxygen adding circuit; an alarm signal of the protection and alarm branch circuit part in the strong current detection protection system is transmitted to the signal control and alarm system in a wireless or wired manner; an oxygen adding alarm host of the signal control and alarm system transmits an audible and visible alarm signal; and a voice burglarproof host transmits a wireless alarm signal in the form of a call and a short message. The aquaculture oxygen adding pump monitoring system and the control method thereof are suitable for monitoring of the aquaculture oxygen adding equipment.

The invention discloses a powder feeding device of electrical automation equipment, and relates to the technical field of electrical automation equipment. The device comprises a storage barrel, and ischaracterized in that a feeding mechanism is arranged on one side of the storage barrel, a conveying mechanism is mounted below the storage barrel, a fixing base is mounted at the bottom end of the conveying mechanism, an electric telescopic rod is mounted at the joint of the conveying mechanism and the fixing base, and the conveying mechanism is fixedly connected with the fixing base through theelectric telescopic rod. The powder feeding device is scientific and reasonable in structure and convenient to operate, the feeding mechanism is arranged to realize automatic feeding of materials, the defect of manual feeding of traditional equipment is overcome, manpower is effectively saved, the working efficiency is improved, timing feeding can be achieved through the arranged storage barrel,the automation control of electrical equipment is improved, the practicability is improved, the automatic conveying of materials can be achieved through the arranged conveying mechanism, the automaticconveying function of the equipment is achieved, and the automation degree of the equipment is improved.

The invention discloses a controllable heat-dissipation thermal-insulation oblique arched seedling raising greenhouse. The seedling raising greenhouse comprises a greenhouse frame and an outer protective enclosure, the outer periphery of the greenhouse frame is provided with the outer protective enclosure, the outer side of the outer protective enclosure is provided with an external thermal insulation system, and a water supply system and a power distribution system are arranged in the greenhouse frame; a parabolically oblique arched support is adopted at the upper part of the greenhouse frame, and the upper part of the greenhouse frame is provided with a side skylight system installed at the side edge of the parabolically oblique arched support; an outer sun-shading system is arranged atthe upper part of the greenhouse frame; and switching of thermal insulation and ventilation is performed by the external thermal insulation system and the side skylight system by adopting an electricfilm rolling form. According to the invention, the seedling raising greenhouse is stable and firm in structure, large in space span and easy to operate, the lighting performance is good, the ventilation performance is good, the thermal insulation performance is high, the seedling raising environment microclimate is conveniently controlled, the seedling growth is effectively accelerated, the seedling quality is improved, the seedling raising period is shortened, the worker labor efficiency is improved, and the problems that a seedling raising greenhouse is hot and humid in the summer and the temperature is too low in the winter are effectively solved.

The embodiment of the invention discloses a sample detection method and device, a sample analyzer and a storage medium. The method comprises: in the process of sequentially testing the current samples, determining the current samples corresponding to the faulted test items as retest samples; scheduling the retest sample to a temporary storage area; and after the failed component is successfully repaired, re-detecting the failed test item by using the re-test sample in the temporary storage area. Through the above technical scheme, the current sample with the fault is transmitted to the temporary storage area to be cached, when it is determined that the component with the fault is successfully repaired, the retest sample is controlled to be scheduled to the sampling position to be detectedagain, automatic control over sample retest when the fault occurs is improved, and time waste and personnel consumption caused by transmission of the retest sample to the recovery area and manual retest are avoided.

The present invention discloses an electrical pressure actuating support method and an electrical precision support cylinder. Wherein, the support cylinder is a hollow structure. The hollow structure is divided into an upper section and a lower section and provided with a vertically moving support rod and an electrical elevator assembly. A traveling clearance is arranged between the support rod and the electrical elevator. Both ends of the clearance, viz. bottom of the support rod and top of the electrical elevator are respectively arranged with a switch contact to form a control circuit switch for the electrical elevator. The clearance is changed based on relative displacement between the support rod and the electrical elevator until they contact each other to switch on the control circuit of the electrical elevator, stop the elevator assembly and realize support. The present invention rejects complex oil pressure control system, has the advantages of no pollution, small size, simple structure, lower cost, high efficiency, accurate and reliable control and flexible support. The pressure actuating mechanism of the same size can get electrical pressure 200% to 300% higher than oil pressure.

The invention relates to a sewage treatment device. The sewage treatment device comprises a sewage storage tank, a whitewash storage tank, a microorganism storage tank, a stirring device and a fermentation device, wherein valves are arranged below the sewage storage tank, the whitewash storage tank and the microorganism storage tank respectively, the valves are communicated with the stirring device by virtue of a first delivery pipe, the stirring device is communicated with the fermentation device by virtue of a second delivery pipe arranged at the bottom of the stirring device, and the fermentation device is provided with a gas outlet and a solid-liquid outlet. The sewage treatment device provided by the invention is simple in sewage treatment technology and easy to operate; and equipmentis not complex, automation control is high, and domestic sewage treatment efficiency is high.

The invention relates to a preparation method and application of an adsorbent for treating lead-containing waste water, and belongs to the technical field of heavy metal wastewater treatment. The preparation method comprises the following steps: performing pretreatment on phosphogypsum, modifying phosphogypsum by adopting a sodium dodecyl benzene sulfonate modification technology, and performing ultrasonic treatment. The adsorbent prepared by the method can realize chemical complexation reaction with heavy metal lead ions in waste water, so as to remove the heavy metal lead ions. Phosphogypsum has a large specific surface area, and the treated phosphogypsum subjected to further improvement of the method has a relatively high adsorption capacity, so that the adsorbent becomes an excellent adsorbing material for removing lead ions. The adsorbent prepared by the invention is good in stability and high in adsorption capacity, and treated lead-containing waste water can reach discharge requirements on lead of national Integrated Wastewater Discharge Standard (GB8978-1996).

The invention provides a glass forming method. The method uses a glass forming device; and the glass forming device comprises a machine frame, a rotating driving assembly, a heating assembly, a forming assembly, a cutting assembly, a shifting assembly, finished-product tanks and controllers, the upper surface of the machine frame is provided with an opening, the rotating driving assembly, the heating assembly and the shifting assembly are installed in the machine frame, the forming assembly is installed at both sides of the middle parts of left and right directions and on the middle part of the machine frame, the cutting assembly is installed at the right upper part of the middle of the machine frame, and the finished-product tanks are installed at the right end surface; and the rotating driving assembly comprises inner-side friction wheels, outer-side friction wheels, first rotating shafts, a first linking wheel, a first chain and a first driving electrical machine. The device disclosed by the invention has the beneficial effects that the device is easy to control, the longitudinal section shapes of glasses can be changed by changing first molds and second molds, two glasses are formed at one time, and the automation control degree is high.

The present invention discloses a filler dust eliminating apparatus used in a baking tunnel during a baking process of a graphite manufacturing process, and relates to the field of graphite manufacturing. The apparatus comprises a rectangular base frame and a hopper frame installed on the base frame. Both axial sides of the base frame are provided with axial slide rails. The bottom of the hopper frame contacts the axial slide rails by slide apparatuses. The middle parts between the hopper frame and the two axial ends of the base frame are respectively provided with a rectangular sealing cover. Both axial ends of the sealing covers are respectively fixed on the two edges of the hopper frame, wherein the two edges of the hopper frame are relative to the base frame. According to the scheme of the present invention, the hopper can freely move above the baking tunnel by the base frame, it is ensured that the filler formed by mixing metallurgical coke and quartz sand, or river sand and the like can be uniformly filled in any positions in the baking tunnel; the dust generated during the filler pouring process is prevented from diffusion into the air by the sealing cover on the base frame; with the sealing cover, the sealing of the tunnel mouth can be remained during the hopper frame moving process so as to prevent the diffusion of the dust to the maximal degree; with the dust discharge mouth on the base frame, the dust dissipation time in the tunnel can be shortened.