1530results about How to "Reasonable structure" patented technology

The invention discloses an intelligent centrifugal pump cavitation fault detector, which is characterized by comprising a signal acquisition system, a signal processing system, a detection system and a display control system, wherein the signal acquisition system is a pressure transmitter arranged at the inlet of a centrifugal pump; the signal processing system comprises a singlechip, a latch, a program memory, decoder, an analog-to-digital converter, a D trigger, a NOT gate and an NOR gate; the detection system is used for analyzing wavelet multi-dimensional statistical characteristic quantity, performing characteristic extraction on signals, classifying and identifying the extracted characteristic parameters by using a support vector machine to differentiate different cavitation states of the centrifugal pump at a normal running state, a primary cavitation stage, a light cavitation stage and a serious cavitation stage and transmitting the final detection result to the display control system; and the display control system comprises a liquid crystal display module, a loudspeaker (LS) and waved switches S3-S6. The detector has the advantages of reasonable structure, reliable performance, quick and accurate detection, low expense, capability of fully meeting the cavitation fault diagnosis requirement of the centrifugal pump and the like.

The invention relates to automatic or semi-automatic cooking equipment and a batch charging mechanism thereof; the cooking equipment comprises a machine rack, a pot body, a batch charging mechanism, aheating device and a controller; the batch charging mechanism comprises a bracket and a locating mechanism, the locating mechanism is arranged on the bracket for installing a material case; furthermore, a translation mechanism and a turnover mechanism are arranged on the bracket, the translation mechanism carries out moving action of the locating mechanism, and the turnover mechanism carried outrotating and batch charging actions of the material case. The invention has the beneficial effects that: the structure is rational, various materials needed by one dish can be combined together according to the batch charging requirements, and charging is carried out sequentially according to cooing techniques, so as to easily realize intelligent automation or partial automatic charging of the materials for cooking and greatly improve the charging time, position and parts of the materials accurately; the labor intensity is reduced, the efficiency is improved and the quality of dishes can be effectively ensured.

The invention provides an underwater topography measurement system as well as a manufacturing method and a measurement method. The underwater topography measurement boat is composed of at least one measurement boat, a standard station, main manipulation equipment and remote control equipment, wherein the standard station, the main manipulation equipment and the remote control equipment are implemented and manipulated on the bank; a plurality of measurement boats can be simultaneously manipulated by the standard station, the main manipulation equipment and the remote control equipment; each measurement boat is composed of a boat body, a control system, a navigation direction control system, a positioning system, a measurement system and a communication system; the whole boat body of each measurement boat is independently composed of a boat head and a boat body by sections; the lower end part of an equipment mounting column is fixedly provided with a probe of a depth sounder; a bearing cabin of the boat body is internally provided with a data communication radio station, a GPS (Global Positioning System) radio station, the depth sounder, a storage battery pack, a power supply module and an industrial control computer; an engine is provided with a starting engine; and the starting engine is composed of an igniting device, a shutdown device and a starting and shutdown detection circuit. The underwater topography measurement boat disclosed by the invention has the advantages of scientific design, reasonable structure, simplicity in operation, convenience and flexibility, convenience for installation and detachment and convenience for transportation and transferring, so that the underwater topography measurement boat is adapted to underwater measurement of various different water areas and the automation of the underwater measurement is realized.

The invention discloses an intelligent lock-control system for electric power safety, which has the advantages of reasonable structure, safety, reliability, and high work efficiency. The system comprises an administrator workstation, a master control machine communicated with the administrator workstation through a local communication network, an intelligent key and locksets arranged on terminal places, wherein unlocking scope data of different rank personnel is stored in the master control machine, the unlocking scope data comprises the scope of opening locksets and RFID (Radio Frequency Identification Device) code value corresponding to an RFID code piece in each lockset; and before the unlocking personnel takes away the intelligent key, the personnel needs to affirm identity on the master control machine, then the master control machine transfers the set unlocking scope data to the intelligent key, at last, the intelligent key judges whether to unlock through distinguishing the RFID code value in the lockset. The system can provide an effective technical method for strengthening personnel access management and equipment using management of a transformer station and a power station, improving work efficiency, and ensuring safe production.

The invention relates to a lightweight compounded outer wallboard and the manufacturing method thereof. And it is compounded of fiber or wire fabric reinforced cement slab and bearing layer, where the bearing layer is made of reinforcing fabric reinforced light aggregate concrete, one or two sides of the bearing layer are combined with cement slabs and a cavity in the bearing layer is enveloped by light aggregate concrete and full of heat insulator. And its manufacturing method comprises a process as follows: A. placing cement slabs on one or two sides in a die space; B. placing reinforcing fabric provided with heat insulator in the middle by the cement slabs in the die space; C. pouring light aggregate concrete in the die space to bury the reinforcing fabric; and D. staying, curing and hardening and then demoulding to make it. And the method is simple, practical, high-efficiency and it has advantages of lightweight, high intensity, strong bearing capacity, good heat insulating property, seismic resistance, seepage prevention, etc.

The invention discloses a thermal runaway test analysis system for a lithium ion battery. The thermal runaway test analysis system comprises an experimental device, a testing device and a data collection and treatment system, wherein the experimental device comprises a heat-conducting pipe and a thermal insulation system; a resistance wire is wound on the outer wall of the heat-conducting pipe; the heat-conducting pipe is embedded into the thermal insulation system; a lithium ion battery mounting hole is formed in an inner cavity of the heat-conducting pipe and is used for mounting a to-be-tested lithium ion battery; a temperature sensor mounting hole is formed in the top end of the heat-conducting pipe and is used for mounting a temperature sensor; and the thermal insulation system is composed of a container and a heat-resisting insulating layer in the container. The thermal runaway test analysis system for the lithium ion battery, which is disclosed by the invention, is reasonable in structure, convenient to operate and diverse in function; thermal runaway of the lithium ion battery can be tested by the factors such as environment temperature, high-temperature environment, charge-discharge multiplying power and cooling condition by using the system; the collection accuracy of experimental data is relatively high; a data collection and analysis system is convenient to use; and the test accuracy can be ensured.

The invention relates to an intelligent individualized travel route designing system which comprises a user login system, a database system, a travel information analysis system, a travel route designing system and a traffic route designing system, wherein the user login system is connected with the database system, the database system is connected with the travel information analysis system, the travel information analysis system is connected with the travel route designing system, and the travel route designing system is connected with the traffic route designing system. The user login system comprises at least one terminal device. Therefore, the invention has the advantages that: 1, the structure is reasonable, the function is complete, the processing speed is high, different design services can be provided according to different user requirements; 2, the terminal device form is varied, the operation use is convenient and the flexibility is strong; 3, the information data volume is large, the great information requirement during the travel motion is met, and the reference is very strong; 4, convenient use is provided for tourists with different nationalities and different languages; 5, the design flexibility of the travel route is strong, and the individualized service with people first is obtained; and 6, the operation procedure is simple, which is suitable for various culture levels of people.

The invention discloses a board splicing machine. The board splicing machine comprises a machine frame and a board conveying device installed on the machine frame, wherein the board conveying device comprises a bottom board conveying belt for conveying bottom boards forwards, and a side board conveying groove formed in one side of the bottom board conveying belt, and one side, close to the bottom board conveying belt, of the front end of the side board conveying groove is provided with a side board outlet; a gluing device is arranged beside the inlet end of the bottom board conveying belt; an aligning device corresponding to the side board outlet is arranged in front of the side board outlet, and an induction device corresponding to the aligning device and inducting the positions of the bottom boards is further installed on the portion, beside the bottom board conveying belt, of the machine frame; a nail gun is arranged between the side board outlet and the aligning device; the board conveying device, the aligning device and the nail gun are further connected with a control device, and the input end of the control device is connected with the induction device; a pressing and connecting device for pressing and airing the bottom boards and side boards is arranged in front of the outlet end of the bottom board conveying belt. The board splicing machine is reasonable in structure and convenient to use, the machining efficiency can be substantially improved, consumption of wood can be reduced, and cost can be saved.

The invention relates to a multi-angle drilling device. The multi-angle drilling device comprises a fixing frame provided with a base. The fixing frame is provided with a sliding rail and an electric drill fixing platform which moves up and down along the sliding rail. The electric drill fixing platform is transversely arranged, the left end and the right end of the electric drill fixing platform are of a shaft structure, and shaft parts of the two ends are coaxial and are connected to sliding bases of the sliding rail through bearings. The electric drill fixing platform is provided with a tray for fixing an electric drill and a feeding unit used for driving the tray to move front and back on the electric drill fixing platform. The device is adjusted to a proper height through ascent and descent, the angle of the fixing frame in the horizontal direction is adjusted, the electric drill fixing platform is rotated to adjust the angle in the vertical direction, and thus through the adjustment in the three aspects, an electric drill bit can rapidly arrive at an accurate position of a hole to be drilled, then the electric drill is started, and the feeding unit is used for performing drilling operation. The angle adjusting structure is simple, moving and angle adjusting operation is rapid, and the drilling efficiency is high.

Disclosed are a depleted oil-gas reservoir underground gas storage injection-production string and an operating method thereof. In order to construct an underground gas storage by a depleted oil-gas reservoir, a safety valve (1), a telescopic pipe (5), a circulating sliding sleeve (6), a packer (8) and a locating pup joint (9) of the injection-production string are sequentially connected from top to bottom through a tubing (7), and a perforating gun (10) is mounted at the lower end of the tubing (7) and positioned in a gas reservoir (11). By the aid of injection-production well completion interaction process technology, the bottom end of a well completion string is connected to a perforating string and goes down to a well, the perforating string is thrown into a well bottom by a releaser after perforating, test and production can be performed, pollution of a perforated oil-gas layer caused by well control fluids in double trip of the strings is avoided, and operating steps are simplified. The injection-production string has the advantages the structure is reasonable, process perforating, testing, well completion and gas injection and production are completed once, the reservoir is effectively protected, and late well control and repair are omitted.

The invention relates to a pair of high-endurance enterprise-class intelligent collaboration glasses based on the augmented reality technology. The pair of glasses comprises a glasses frame, a first glasses leg, a second glasses leg and lenses. A shielding frame is arranged on the lenses, and a control switch used for controlling a control system to be switched on and off, a power module and an intelligent control module are arranged on the joint of the second glasses leg and the glasses frame; a display screen is arranged in the shielding frame; the intelligent control module comprises a microcontroller, a communication module and a plurality of physical keys; the power module comprises a lithium battery, a data transmission interface charging and discharging circuit, an elastic piece type battery connector and a battery clamping device. The high-endurance enterprise-class intelligent collaboration glasses based on the augmented reality technology are reasonable in structure, have the advantages of being simple in structure, convenient to use, popular in shape, high in endurance, low in weight, free of compressive feeling, high in intelligence degree and the like, and effectively solve the problem that an existing AR device needs to be connected with various cables to work.

The invention relates to an automatic loading machine for pipes. The machine comprises an automatic feeding system and a material receiving system, wherein the automatic feeding system is provided with a steel structure bottom frame which is arranged on one side of a material inlet end of a pipe cutting machine; the bottom frame is coaxially connected with a swing frame through a bolt component; an adjustable bracket is provided with a screw and a nut and is connected with the swing frame through the screw and the nut; a blocking roller is a rotatable roller with four baffle plates; a synchronous execution mechanism consists of an electric push rod serving as a power source, the blocking roller and a steel wire rope; the material receiving system is divided into two parts, one part is that material receiving frames are arranged on trolleys of the pipe cutting machine, and the other part is that a group of material receiving trolleys is arranged at one end of a material inlet of the pipe cutting machine to be combined with the material receiving frames; the material receiving trolleys and the trolleys of the pipe cutting machine run along the same track and are respectively arranged at the two ends of a pipe to be processed; and adjusting discs capable of adjusting the height of the material receiving frames are arranged below the material receiving frames on two trolleys. The automatic loading machine for the pipes has the advantages of simple structure, reliable performance, simple and convenient operation and obvious effect.

The invention relates to a bicycle rent and return system and method based on a smart lock and a smart battery, which belongs to the technical field of bicycles and electric bicycles. The system provided by the invention comprises a server, the smart lock, a smart battery mechanism and a smart battery sale terminal. The server is connected with the smart lock. The server is provided with a bicycle rent and smart lock management platform. The smart battery mechanism is connected with the smart lock. The smart battery sale terminal is connected with the terminal. The smart battery mechanism comprises a smart battery body, a power indicator, a notch slot, a charging port and a USB interface. The smart battery body is provided with a power indicator, a notch slot, a charging port and a USB interface. The bicycle rent and return system provided by the invention has the advantages of reasonable structure, low cost and easy operation, is safe and reliable, and is free of fixed site and pier. A bicycle is provided with the smart lock, and is rented and returned through the smart battery.

The invention discloses an anti-blocking mixing unloading device used for animal husbandry feed production and processing. The device comprises a mixing box; the interior of the upper end of the mixing box is equipped with a mixing shaft; mixing blades are uniformly arranged outside the mixing shaft; the right end of the mixing shaft is connected to a mixing motor; the upper side of the center of the mixing box is equipped with an upper feed baffle; the lower side of the center of the mixing box is equipped with an lower feed baffle; discharge tubes are mounted between the upper feed baffle and the lower feed baffle; a movable plate is arranged at the center of the discharge tube; discharging apertures and solid plates are alternately and uniformly arranged at the center of the movable plate; the left end of the movable plate is connected to a left guiding rod; the center of the left guiding rod is equipped with a left stop block; the right end of the movable plate is connected to a right guiding rod; the center of the right guiding rod is equipped with a right stop block; the lower end of the interior of the mixing box is equipped with a rotating shaft; and the upper end of the rotating shaft is equipped with an unloading swing plate. The device has two discharge tubes for discharging so as to avoid blocking in discharge tubes. Meanwhile, the device utilizes the gravity effect of feed unloading so as to enable the unloading swing plate to swing from side to side and realize uniform feed unloading.

The invention is a high-power light-emitting diode (LED), at least including a LED chip, optical refection metallic electrodes on the outer surface of the p-n junction are directly mounted on a metallic base through high thermal conductivity material or diamond whose thermal conductivity is thrice higher than that of Cu, where the high thermal conductivity material can be small-Ag/Au pearl mixed soldering tin, diamond thermal conducting glue or Ag pearl/powder mixed thermal conducting glue; the electrodes are led out from the conductive layer or circuit board of a diamond basal plate, and the metallic base has at least one screw or screw hole used in connection with cooler; the chip and metallic base have transmitting mediums and lenses, and lighting material also, and the chip can be used for making LED lamps, solar energy LED lamps, LCD back lighting, information display, etc.

The invention relates to contaminated soil treatment equipment through leaching. The contaminated soil treatment equipment comprises a crawler-type road roller, a screening and crushing system, a pulping system, a soil treating system and a medicament feed system; the screening and crushing system is used for breaking hard soil blocks in contaminated soil and screening impurities such as rocks and plastic in the contaminated soil; the pulping system is used for further removing large-particle substances in the contaminated soil, so that the treatment amount of the contaminated soil is reduced, and the treatment cost is reduced; through the adoption of the soil treating system, quick remediation of the contaminated soil through leaching is realized; through the adoption of the medicament feed system, the feed of medicaments and reutilization of a leacheate is realized. All materials and devices are mounted on the crawler-type road roller, so that the transportation and the construction are convenient. The contaminated soil treatment equipment integrates functions of soil excavation, soil screening, medicament adding, soil leaching, leacheate reutilization and automatic control, is compact in structure, convenient to operate and high in suitability and efficiency, is suitable for application of large-scale engineering, and can realize efficient and quick remediation of various contaminated sites.

A threshold-free civil defense door of a doorway comprises door leaves, a doorframe, a lock and a hinge. A sealing beam and a sealing beam lifting mechanism are arranged under each door leaf, and each sealing beam is a turning type sealing beam and comprises a hinge base fixedly connected onto the back surface of the corresponding door leaf, a rocker hinged to the hinge base, a turning beam fixedly connected onto the rocker, a ground sealing member fixed on the turning beam and matched with the ground and a door leaf sealing member fixed on the turning beam and matched with the corresponding door leaf. Each sealing beam lifting mechanism comprises a reversed-L-shaped vertical connection rod, a crank, a shaft base, a bearing, a sealing beam lifting mechanism transmission shaft, a reversing speed changer and a sealing beam lifting handle. The threshold-free civil defense door of the doorway facilitates passing in ordinary time due to the fact that no above-ground threshold is arranged, can be closed in place fast in war so as to achieve functions of protection and closeness, is suitable for protection and closeness of the doorway of civil defense staff and vehicles and has the advantages of being reasonable in structure, convenient to use, easy to operate, flexible to open and close, economic and practical and convenient to maintain.

The invention relates to a method for restoring ground surface by using the natural breeding of culture got from microbiological crust in desert soil. The invention simulates the natural rule of microbiological crust in soil to make the forming time of high cover rate of crust in desert soil be shortened, which can not only treat sand running in desert fast but also make the development between creatures and environment and creatures in treating area be harmonic in the long run. The invention is of great importance in increasing crust cover rate in desert area, increasing stability of sand surface and reducing surface corrosion.

The invention relates to the technical field of shell-cracking devices for nut plant seed shells, in particular to a walnut splitting type shell-cracking kernel-taking machine which comprises a stand, feeding tanks, a material receiving tank, a transmission device, a delivery device, a feeding guide device and a splitting device. The feeding tanks are respectively fixed on the right side and the left side of the upper front part of the stand, the material receiving tank is fixed on the lower rear part of the stand, and the middle part of the stand is provided with the delivery device which can intermittently move. A walnut holding fixture which can fix each walnut and maintain the seam line to be vertical is installed on the delivery device. The invention has reasonable and compact structure, is convenient to use, can accurately position the walnut through the feeding guide device and the holding fixture on the delivery device, and crack the shell in the position perpendicular to the seam line of the walnut through the splitting device; and the mechanical shell cracking of a near-spherical walnut with a projecting seam line can be realized. The invention has the characteristics of high kernel integrity rate, high rate of shell cracking in one step, simple structure, convenient operation and high shell cracking efficiency.

The present invention relates to a visual remote photographing device, which comprises a tripod head device and a remote controller. The tripod head device is communicated with the remote controller through radio. The tripod head device comprises a camera, a frame, a battery, a servo motor system, a video signal sending system and a shutter signal receiving system. The servo motor system comprises a first servo motor system, a second servo motor system and a third servo motor system which respectively control the rotation of the camera in the horizontal direction and the vertical direction and the adjustment of the zooming of the camera. The remote controller comprises an electrical source, a video signal receiving system, a video display system, a servo motor control signal sending system and a shutter signal sending system. The servo motor control signal sending system comprises a first servo motor control signal sending system, a second servo motor control signal sending system and a third servo motor control signal sending system which respectively control the rotation and stop of the first servo motor system, second servo motor system and the third servo motor system on the tripod head device. The visual remote photographing device is more reasonable in structure, and is provided with visual remote adjustment in direction, angle and zooming for a camera in the air so that the aerial photography is more convenient and the photography performance is greatly improved.

The invention discloses a radial dual-layer flexible grid structure which comprises more than two loop chain-shaped shear mechanisms and more than two radial dual-layer chain-shaped shear mechanisms, wherein the loop chain-shaped shear mechanisms are concentrically distributed; the radial dual-layer chain-shaped shear mechanisms are distributed along the radial direction of the loop formed by the loop chain-shaped shear mechanism; each loop chain-shaped shear mechanism is formed by a plurality of loop symmetric scissor-like units which are connected end to end to form a loop; each radial dual-layer chain-shaped shear mechanism comprises upper and lower horizontal shear mechanisms which are aligned, and each shear mechanism layer is formed by a plurality of radial symmetric scissor-like units end to end to form a line; and upper and lower radial chain-shaped shear mechanism layers are respectively connected with the loop chain-shaped shear mechanisms through a second connecting rod end part of the radial symmetric scissor-like units and a first connecting rod end part of the loop symmetric scissor-like units. The grid structure can be expanded and contracted freely, has a high rate of expansion and contraction, has a reasonable structure and simple design and construction, and is especially suitable for buildings with medium and small spans.

The invention comprises a core tube, an insulating layer and an outer protecting jacket. There is the insulating layer outside the core and the outer protecting jacket outside the insulating layer. There are more than one hard thermal insulation supporting rings between the core tube and the outer protecting jacket. Because of having the expansion self-compensating effect when used at high temp., the structure of the invention can't be destroyed, so as to make it have a good thermal insulation effect.

The invention relates to the technical field of delivering and packing devices in the packing process of a sectional material, and provides an automatic delivering and packing device for the sectional material. The automatic delivering and packing device comprises a stacking platform which can ascend and descend, a carriage-clamped transverse delivery device, a limiting longitudinal delivery table which can ascend and descend and an automatic packing machine. The limiting longitudinal delivery table is arranged on the right side of the stacking platform. The carriage-clamped transverse delivery device is arranged between the stacking platform and the limiting longitudinal delivery table. The automatic packing machine is arranged behind the limiting longitudinal delivery table. The automatic delivering and packing device for the sectional material is reasonable and compact in structure and convenient to use; electric control and mechanical transmission are used for replacing manual operation, as a result, the whole process that from the step that the sectional material is stacked to the step that the sectional material is additionally provided with a packing belt is completed automatically, manpower input is reduced, physical labor is mitigated, work efficiency and packing quality are improved, collisions in the packing process of the sectional material are avoided effectively, and therefore product quality is improved.

The invention relates to a copper coated aluminum-magnesium conductor line and a manufacture method thereof. The copper coated aluminum-magnesium conductor line for symmetrical cables comprises an aluminum-magnesium core rod and a copper layer, wherein the copper layer is uniformly and concentrically coated on the surface of the aluminum-magnesium core rod. The manufacture method of the copper coated aluminum-magnesium conductor line for symmetrical cables comprises the following steps: 1. smelting; 2. coating and welding; and 3. wire drawing and annealing. The copper coated aluminum-magnesiumconductor line for symmetrical cables has reasonable structure and can meet the technical standard of a symmetrical cable conductor wire in electrical and mechanical performance, and the transmissionperformance of a signal, an image and data can completely conform to the high-frequency transmission line skin effect; copper sources are saved by replacing copper with aluminum, and the manufactureand application costs of raw materials can be greatly reduced; and the cost of the raw materials is relatively lower.

The invention discloses an air purifier facilitating dust removal. The air purifier comprises an air purifier body and a bottom box. An air inlet channel is formed in one side face of the air purifierbody. An air inlet fan is fixedly arranged on one side of the air inlet channel. An air quality detection chamber is arranged on one side of the air inlet fan. A particle detector is fixedly arrangedon the top of the air quality detection chamber. The bottom of the air quality detection chamber is fixedly provided with an air component detector and a temperature and humidity sensor. An automaticvalve is arranged on one side face of the air quality detection chamber. The air purifier has the beneficial effects that pollutants adsorbed and intercepted by filter nets can effectively vibrate down, a cleaning rod can brush down thick dust and particles on a primary effect filter net, and falling dust or pollutants are sucked in through a dust suction hood; a dust removing machine is used forcleaning, the structure is reasonable, and dust removal can be effectively conducted; and meanwhile, filter net damage is avoided, the service life of the filter nets is prolonged, and the air purifier purification effect is improved.

The invention discloses an early-warning device for road traffic conflicts, which comprises a passing vehicle detector, a staying vehicle detector, a pedestrian detector, a data receiving module, a main control module, a forward alarm, a backward alarm, a driving module, a data communications interface, a voice communications and broadcast module, and a power source. An LED array is installed inside the backward alarm, and a light source and a light-gathering part are installed inside the forward alarm. Output terminals of the passing vehicle detector, the staying vehicle detector and the pedestrian detector connect to the data receiving module; the output terminal of the data receiving module connects to the main control module; the main control module connects to the data communications interface; the other end of the data communication interface connects to the voice communications and broadcast module; and the output terminal of the main control module, via the driving circuit, connects to the forward alarm and backward alarm. The invention provides the multiple early-warning information preventing conflicts to the traffic participants in the region of low visibility and traffic blind spot with the advantages of a good effect in warning and a wide application.

The invention discloses full-automatic double ultrasonic U-shaped upstops of a nylon zip fastener, comprising a stand, a plastic flat wire cutting and bending forming mechanism, a chaining-passing positioning mechanism, a pull head signal inducing mechanism, an elastic zip fastener mechanism, a chain-dividing mechanism and a welding and melding mechanism. The invention utilizes the ultrasonic melding technology, uses one welding head to simultaneously meld the U-shaped plastic flat wire upstops at the left and the right of the nylon zip fastener by a full-automatic production mode, and has the advantages of reasonable structure, reliable performance, high production efficiency, stable product quality, and the like.

The invention provides an energy-saving and emission-reducing device for coke dry quenching and an energy-saving and emission-reducing coking process using same, which can realize energy saving and emission reduction with high efficiency and low cost. The invention has the advantages that the emission of carbon dioxides in flue gas is reduced in the coke quenching process, valuable carbon monoxide is generated, and low-cost feed gas is provided for downstream products to synthesize ammonia, methanol and the like while coke quenching, thereby being a new method for realizing energy saving and emission reduction in the coke production and having excellent industry prospects and wide social benefits.

The invention discloses a double-mould turnover casting machine for casting a piston, and the machine comprises a rack and a workbench, wherein a through hole is arranged at the centre of the workbench, the workbench is arranged on the central support of the rack via a rotary shaft, and a turnover oil cylinder is arranged below one end of the workbench; an external mould mechanism is arranged on the workbench, a central core mechanism is arranged below the workbench, and a top mould mechanism is arranged above the workbench; and a manipulator and an electric control device are further arranged on the rack. The double-mould turnover casting machine disclosed by the invention is reasonable in structure, small in floor area, low in cost, simple and convenient in operation, fast in replacement for fixtures and moulds, stable in running, convenient in maintenance, low in fault rate, and high in the yield of the cast piston; and the double-mould turnover casting machine has the advantages of being small in floor area, high in production efficiency, stable in process parameter, stable in product quality and the like compared with a single-working-position casting machine.

The invention discloses a polishing device for dustless building grounds. The polishing device comprises an extension column; the upper end of the extension column is connected with limiting bars; the upper end of the limiting bar on the left side is connected with a driven walking wheel; the middle part of the driven walking wheel is connected with a driven shaft; the upper end of the limiting bar on the right side is connected with a driving walking wheel; the middle part of the driving walking wheel is connected with a driving shaft; limiting frames are connected to two ends of the driving shaft; the upper ends of the limiting frames are connected with a mounting plate; the upper end of the mounting plate is connected with a walking motor; the left end of the walking motor is connected with a driving belt wheel; the lower end of the driving belt wheel is connected with a driven belt wheel through a belt; a walking frame is connected between the driven shaft and the limiting frame on the left side; the middle part of the walking frame is connected with a driving box; the lower end of the driving box is connected with a dust sucking cover; and the lower end of the extension column is connected with a fixed base. The polishing device satisfies the polishing demands on the building grounds, prevents workers from being supported by a polishing machine to polish, reduces the labor intensity of construction workers, meanwhile, improves the polishing efficiency of the building grounds, and is high in practicability.