687results about How to "Reduced footprint" patented technology

The present invention discloses a mechanical tensioning gravity energy storage power generation device based on a rail train and a power generation track line thereof, including a power station under the track, two rows of drive plates are arranged at the bottom of the train, the power station includes a box buried under the track, a power generation assembly is arranged in the box, the power generation assembly is arranged in the middle of the track, and the power generation assembly is connected to a tensioning rope assembly, the tensioning rope assembly includes a tensioning steel wire rope, one end of the tensioning steel wire rope is connected to the power generation assembly and arranged in the box, and the other end is connected to a mechanical tensioning adjustment assembly, the mechanical tensioning adjustment assembly is arranged outside the track, and the mechanical tensioning adjustment assembly drives the power generation assembly by adjusting the tensioning force of the tensioning steel wire rope, and is pressed toward the drive plate on the train. The present invention adopts a mechanical tensioning rope design to realize the pressing of the power generation assembly and the train drive plate, avoids the power station pressing being affected by the ambient temperature, improves the applicability of the power station, and is also more convenient for maintenance and adjustment.

The invention provides a scattered wastewater centralized treatment method, and belongs to the technical field of sewage treatment.The treatment method comprises the following steps that S1, wastewater from various sources is classified and stored; s2, mixing in a reaction tank in proportion according to the type of the wastewater, then carrying out aeration stirring, and adjusting the pH to be acidic to obtain mixed wastewater; s3, carrying out iron-carbon micro-electrolysis treatment on the mixed wastewater to obtain treated wastewater, and enabling the treated wastewater to automatically flow into a sedimentation tank; s4, adjusting the pH value of the treated wastewater to be alkaline, then carrying out delayed aeration treatment, then carrying out coagulating sedimentation, and separating mud from water after the sedimentation is finished; s5, carrying out aeration stirring on the clear liquid, then introducing primary SAO3 ozone for catalytic oxidation, carrying out biochemical treatment by using activated sludge to obtain second treated wastewater, and carrying out sludge-water separation; s6, aerating and stirring the supernate, introducing secondary SAO3 for catalytic ozonation, and discharging into a buffer water tank; s7, the wastewater is cached in a discharge water tank, and sludge is packaged and subjected to outsourcing treatment after being subjected to gravity concentration; the method can be used for simultaneously treating various kinds of wastewater, and energy consumption and cost are remarkably reduced.

The present invention relates to the technical field of welding equipment, specifically to a welding device for processing a sleeve condenser, including an intermediate connecting frame, the top and bottom of the intermediate connecting frame are fixedly installed with end frames, a movable lifting frame is driven down by a driving motor, two buffer pads apply pressure to the sleeve condenser to fix the sleeve condenser, when multiple welding heads are installed, multiple welding heads weld the positions between the upper and lower pipes of the sleeve condenser, when one welding head is installed, the welding head welds the positions between the upper and lower pipes of the sleeve condenser, the welding head is moved up and down to weld different positions between the upper and lower pipes of the condenser, and one-time welding can reduce the number of welding processes, thereby improving production efficiency. Compared with multiple welding, one-time welding can save a lot of time and labor costs. In large-scale production, this advantage is particularly obvious. One-time welding can also reduce the generation of welding defects and improve product quality and reliability.

The invention provides a process for preparing cyclohexane-1, 2-dioctyl phthalate, which adopts a loop reaction process to perform hydrogenation reaction of dioctyl phthalate, and comprises the following steps: under the condition of excessive hydrogen atmosphere, firstly putting a catalyst, a solvent and a target product into a reaction tank to form a circulating material; when reaction liquid passes through the Venturi ejector, hydrogenation reaction can be carried out, the Venturi reactor can provide a high gas-liquid mixing ratio, the reaction rate is high, and the production efficiency is high. The catalyst and the reaction mixed liquid are separated by combining a membrane separation process, so that the catalyst is recycled, and the cost is reduced. The target product is added into the system to maintain material balance in the system, so that stable production is ensured. Compared with the traditional technical process, the method has the advantages that the reaction time is shortened, the energy consumption of the device and the investment cost are reduced, the high conversion rate of reactants and the high selectivity of target products can be kept, the operation period of the device is long, and continuous and stable production is realized.

The invention relates to a horizontal integrated hairpin type feed water heater for a power plant. The horizontal integrated hairpin type feed water heater comprises a left pipe box, a right pipe box, two pipe plates, a group of feed water inlet and outlet pipes, a U-shaped pipe bundle, two straight-section shells, a hairpin bend connected with the two straight-section shells, a steam inlet, a drain outlet and other parts. The device is particularly suitable for heaters with small pipe side feed water flow and higher temperature rise; the high-temperature feed water and the low-temperature feed water are distributed in the two relatively independent tube boxes, so that the temperature difference stress of a tube plate and a tube box sealing head is avoided; the overheating section, the condensation section and the subcooling section are integrated in one device, so that the occupied area of the device and the number of connecting pipelines can be reduced; deformation stress caused by thermal displacement difference of two sections of barrel bodies of the equipment can be greatly reduced through four-support configuration; the overall height of the equipment can be reduced through horizontal arrangement, and overhaul and maintenance are facilitated.

The invention discloses a landfill leachate low-carbon intelligent treatment and recycling method based on'end-edge-cloud 'cooperative control. The method comprises the following steps: the terminal layer obtains real-time monitoring data of each sensor and sends the data to the edge layer, the edge layer adopts a machine learning algorithm to perform multi-target prediction on an effluent quality index, system comprehensive energy consumption and an anaerobic hydrogen production rate, and then a target function is constructed to obtain an operating parameter ideal value of each module; according to the ideal value and the real-time monitoring data of the terminal layer sensor, the key process operation condition of the system is adjusted, so that the optimal result of the effluent quality index, the anaerobic hydrogen production rate and the comprehensive energy consumption of the system is obtained. According to the invention, the operation parameters of the biochemical system are optimized and controlled through the'end-edge-cloud 'Internet of Things sensing network, so that the intelligent management and control of the landfill leachate treatment and resource / energy conversion overall process flow are realized, and the dynamic adjustment of key influence factors in the landfill leachate treatment and resource conversion process is realized.

The invention discloses automatic grinding production equipment for polyester resin for powder coating, and belongs to the technical field of powder coating production. The equipment comprises a grinding and screening barrel, a screening net, a grinding plate, a suction cavity and a feeding pipe, a screening groove is formed in the grinding and screening barrel, the screening net is installed in the screening groove, the grinding plate is configured to be driven to rotate in the grinding and screening barrel, and a gap is formed between the side wall of the grinding plate and the inner wall of the grinding and screening barrel; the side wall of the grinding plate and the inner wall of the grinding and screening barrel are combined to grind polyester resin in the gap, a push-pull piston is arranged in the suction cavity in a sliding mode, a suction pipe is connected to the suction cavity, the feeding pipe penetrates through one side wall of the grinding and screening barrel to extend into the grinding and screening barrel, and the push-pull piston is used for assisting the feeding pipe in feeding when sucking air flow. The invention particularly provides the automatic grinding production equipment for the polyester resin for the powder coating, which can reduce the size of the equipment, clean a screening net and assist feeding and discharging.

The invention discloses a product full life cycle carbon emission tracking method, which is embedded in a product carbon footprint management service platform, and specifically comprises the following steps: S1, formulating a product definition boundary and a truncation standard based on a carbon emission calculation formula; s2, data acquisition and accounting are completed according to local conditions, and real-time monitoring and data acquisition are carried out on all links in the product production process. According to the method, the total emission amount of greenhouse gases directly or indirectly generated by a product in the whole life cycle of the product is calculated, including the emission in the extraction, production, transportation, use and waste processes of raw materials, so that the calculation and result traceability of the carbon footprint in the whole life cycle of the product are realized. Accurate carbon emission data are provided for enterprises, the green level of the production process and technical equipment is improved, and the transformation of the enterprises and the society to low-carbon economy is promoted.

The invention relates to an antenna device and equipment. The antenna device comprises a dielectric body, a first conductive pattern layer and a second conductive pattern layer. The first conductive pattern layer comprises a first antenna structure, and the first antenna structure is provided with a first radiation branch knot. The second conductive pattern layer and the first conductive pattern layer are located on two different layers of the dielectric body in the thickness direction of the dielectric body respectively, the second conductive pattern layer comprises a first suspension line, and the first suspension line and the first radiation branch knot are at least partially overlapped in the thickness direction to achieve mutual coupling. According to the antenna device, the first suspension line of the second conductive pattern layer and the first radiation branch knot are at least partially overlapped in the thickness direction and are mutually coupled, so that the gain performance of the first working frequency band corresponding to the first radiation branch knot can be improved; in addition, the structure is attractive, the overall layout is compact, a large area is provided for arrangement of the demisting heating unit on the medium body, and the demisting performance can be improved due to the fact that the area of the demisting heating unit is increased.

The invention relates to the technical field of green fuel preparation, and discloses a method for preparing green fuel by coupling biomass gasification and combustion, which comprises the following steps: (1) separating N2 from air, taking a part of residual gas as a gasification agent, and taking the other part as combustion gas; (2) carrying out chemical chain gasification on the biomass through steam under the condition of a gasifying agent to obtain H2 and CO2; (3) carrying out chemical looping combustion on the biomass under the conditions of an oxygen carrier and combustion gas to obtain CO2; (4) electrolyzing a part of obtained CO2 by using electric energy obtained by biomass chemical looping combustion to obtain CO; (5) synthesizing N2 and H2 to prepare a green NH3 product; and synthesizing H2, CO2 and CO to prepare a green methanol product. According to the method, a biomass fuel chemical looping power generation and biomass chemical looping gasification coupling technology is applied, a carbon source in biomass is fully utilized, meanwhile, green NH3 and methanol products are prepared, and efficient utilization of resources is achieved.

The invention discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.

The invention discloses a mini air pump for tire inflation, and relates to the technical field of inflation pumps, the mini air pump comprises a front cover, a rear cover and a box body enclosed by the front cover and the rear cover, and further comprises a locking assembly arranged on one side of the front cover and used for fixing an accessory box and an air pressure piston assembly arranged in the front cover and the rear cover, the air pressure piston assembly is arranged in the box body, an air inlet of the air pressure piston assembly is connected to an air inlet groove in the box body, the storage battery and the motor core are arranged in the box body in parallel, the space occupied area of the storage battery and the space occupied area of the motor core are optimized and reduced, the specification of the whole air pump can reach 90 mm * 90 mm * 37 mm, and the size of the whole air pump can reach 90 mm * 90 mm * 37 mm. And meanwhile, through the arranged air tap connector, an air pipe is not needed, an air pump can be directly connected to a tire of an automobile or a bicycle for inflating, and the tire inflating efficiency of people is improved.

The invention relates to the field of detection machines, in particular to a touch key full-size automatic optical detection machine which comprises a feeding module, a first appearance defect detection module and a second appearance defect detection module. The first appearance defect detection module comprises two appearance detection modules; each appearance detection module comprises a turntable, a plurality of bearing seats and a plurality of detection camera devices which are arranged on one sides of the bearing seats and are used for detecting different visual angles of products; all the bearing seats are borne by the rotary table, all the bearing seats are arranged in a circle around the edge of the rotary table, a plurality of clamps used for clamping products are arranged on each bearing seat, and each clamp is arranged on the corresponding bearing seat; the first outer pipe defect detection module, the second outer pipe defect detection module, the double-rotation moving mechanism, the CCT detection module, the PPU moving station, the automatic overturning moving device and the second manipulator are used for moving overturned products to the sorting tray to realize sorting and discharging. The overall integration degree is high, the detection visual angle is comprehensive, the equipment flexibility is good, and whole-course automatic detection can be achieved.

The continuous flow sludge rapid granulation system based on particle size separation comprises a micro-aerobic tank, an aerobic tank, a precipitation device and a particle size separation device, the micro-aerobic tank is communicated with the aerobic tank, the precipitation device and the particle size separation device are both installed on the upper portion of the aerobic tank, the bottoms of the precipitation device and the particle size separation device are both communicated with the aerobic tank, the micro-aerobic tank is communicated with the precipitation device, and the particle size separation device is communicated with the precipitation device. And the precipitation device is communicated with the particle size separation device. Wherein the particle size separation device realizes screening and enrichment of granular sludge, and a continuous flow aerobic granular sludge system with a high granulation ratio is rapidly formed; the precipitation device can accelerate the formation of the granular sludge, and long-term stable operation of the granular sludge is ensured by coexistence of the precipitation device and the granular sludge; the outer-layer aerobic and inner-layer anoxic / anaerobic microenvironment can be used for synchronously removing phosphorus by nitrification and denitrification. The continuous flow aerobic granular sludge which operates stably for a long time and has good carbon, nitrogen and phosphorus removal performance can be rapidly cultured, in addition, investment is small, compatibility is easy, the occupied area and operation energy consumption are saved, and the method has good application prospects.

The utility model relates to the technical field of acid regeneration desiliconization, in particular to a waste acid desiliconization system which comprises a heat exchanger, a dissolving tank, a cooler, a reaction tank, a surface filter and a purified waste acid collecting tank which are connected in sequence, the surface filter is connected with a mixing tank, the top of the mixing tank is connected with a flocculant storage tank through a metering pump, and the bottom of the mixing tank is connected with a sludge collecting tank. According to the utility model, the reaction tank and the surface filter are alternately circulated for desiliconization, so that the desiliconization efficiency is high; the surface filter is high in filtering precision, adjustable, small in equipment size and free of site limitation, multi-stage filtering can be flexibly set according to conditions, and the requirements for iron oxide powder of different quality grades are better met; a sedimentation tank does not need to be built, and the occupied area and economic investment are reduced; a flocculating agent can be proportionally added into the mixing tank according to the sludge amount, so that the use amount of the flocculating agent is greatly reduced, and the device has a wide application prospect.

The device comprises a [-shaped operation frame, the [-shaped operation frame comprises an upper cross beam, a lower cross beam and a longitudinal beam, and the upper cross beam and the lower cross beam are vertically welded to the two ends of the longitudinal beam respectively. The U-shaped operation frame is lifted to the limit position by pushing the ram, the limiting insertion rod is matched with the driving mechanism to enable the U-shaped operation frame to rotate by 90 degrees, the lifting hook and the balance hook are located at the top, the portal frame is adopted as a crane, the lifting hook and the balance hook are connected through at least two steel wire traction ropes, and the U-shaped operation frame can be pulled and hoisted. The whole [-shaped operation frame is erected in a stable and vertical posture, operators and auxiliary personnel can conveniently and safely follow up, the operation frame is hoisted to the cardan shaft, the operation frame is clamped and limited through the hoop limiting part, after the cardan shaft is tightly held, the operators disassemble the cardan shaft, then the cardan shaft is hoisted out, and replacement is achieved. The hidden danger that in the prior art, a cardan shaft is prone to slipping is avoided, and safety and working efficiency are remarkably improved.

The utility model provides a mold locking mechanism for large-area oil cylinder core pulling, and belongs to the technical field of injection mold back-off treatment. The mold locking mechanism comprises a drawing stroke oil cylinder, an inner drawing guide rail, a forming inner drawing mold core, an oil cylinder for mold locking and a mold locking block. According to the utility model, the side mold locking structure is additionally arranged, so that the mold locking pressure required by large-area core pulling is dispersed to the core pulling oil cylinder and the side mold locking structure to be respectively borne, the oil cylinder pressure required by driving an inner pulling structure is obviously reduced, and the oil cylinder specification and the occupied area required by the inner pulling mechanism at the back-off part of a product are reduced; the boundary dimension and height of the mold are reduced, and the mold and injection molding cost is reduced.

The invention relates to the field of high-value utilization of organic solid wastes, in particular to a biomass pyrolysis poly-generation device with a baking pretreatment system, which comprises a pretreatment furnace, a low-temperature pyrolysis furnace and a high-temperature carbonization furnace. Besides, the invention also provides a pyrolysis poly-generation method, raw materials pass through the pretreatment furnace and then enter the low-temperature pyrolysis furnace to be pyrolyzed, pyrolysis gas and pyrolysis carbon are generated, the pyrolysis gas is collected through a channel and discharged, and gas and liquid products with high combustion performance are obtained through subsequent separation and condensation treatment. Pyrolytic carbon enters a high-temperature carbonization furnace to be further carbonized into activated carbon, and waste heat is recycled for the pretreatment process. According to the invention, pretreatment, low-temperature pyrolysis and high-temperature carbonization are coupled in one system, water vapor generated by pretreatment is used for providing an activator for the carbonization process, waste heat generated by the high-temperature carbonization process is used for providing heat required by pretreatment, efficient pyrolysis and carbonization co-production is realized, and the system has the advantages of efficient energy utilization, energy conservation and environmental protection.

The invention discloses a high-efficiency multifunctional rotor speed reducer assembling device and method. A rack comprises a rack body, a press-fitting platform and a press-fitting area, wherein the press-fitting platform and the press-fitting area are arranged on the rack body; the tray conveying mechanism is arranged on the press-fitting platform, a rotor press-fitting seat and a speed reducer press-fitting seat are arranged on the tray, and the tray conveying mechanism is used for conveying the rotor press-fitting seat and the speed reducer press-fitting seat to a press-fitting area; the back plate is arranged on the frame body through the back plate transplanting mechanism, and the back plate transplanting mechanism is used for driving the back plate to transversely slide relative to the frame body; the grabbing mechanism is arranged on the back plate, and the grabbing mechanism is used for grabbing the rotor; the pressing mechanism is arranged on the back plate and is used for pressing a main shaft bearing on the rotor; the tightening mechanism is arranged on the back plate and used for tightening a bearing end cover on the speed reducer; the rotating mechanism is located behind the grabbing mechanism, connected with the grabbing mechanism and used for rotating the rotor. All the mechanisms are accurate in positioning and coordinated in action, accurate matching of the rotor and the speed reducer is ensured, and assembly errors are reduced.

The invention relates to an integrated device and method for in-situ mineralization of rainwater through a bioretention facility. The integrated device comprises a bioretention device body, and the bioretention device body is composed of a super high-rise building, a water storage layer, a covering layer, a filler layer and a drainage layer from top to bottom. The invention further provides a method for in-situ mineralization of rainwater through the integrated device, and the method comprises the steps that the rainwater flows into the super high-rise building through the road surface confluence and flows into the water storage layer from the super high-rise building, and the rainwater passing through the water storage layer infiltrates into the covering layer; the rainwater infiltrated through the covering layer enters the filler layer; rainwater mineralized by the filler layer infiltrates into the drainage layer, the water volume in the drainage layer is gradually increased and the water storage liquid level is gradually increased along with the convergence of the rainwater, and when the water storage liquid level of the drainage layer exceeds the height of the upper edge of the perforated drainage pipe, the rainwater flows into the perforated drainage pipe through the nylon net, so that in-situ mineralization and collection of the rainwater are realized. According to the invention, the problems of scattered layout, large occupied space, complex operation and the like of the existing sectional mineralization treatment technology are solved.

The invention discloses an electrochemical system and method for treating nitrogen-containing organic wastewater based on a double-sided cathode. The electrochemical system comprises a reactor, an aeration device, a power supply, an anode and the double-sided cathode, and the double-sided cathode is prepared by loading a functional catalyst through a double-sided rolling coating process. Under the condition of not adding exogenous iron ions and H2O2, the side, with the electro-catalytic degradation function, in the double-sided cathode generates. OH in situ through the oxygen reduction reaction of two electrons and the electro-Fenton process, so that efficient degradation of organic pollutants is realized; meanwhile, NO3 <-> can be converted into N2 to be discharged under the synergistic effect of the sides, with the denitrification function, of the DSA and the double-sided cathode, organic pollutants and total nitrogen are synchronously removed, the denitrification function and the electrocatalytic degradation function are integrated in the single cathode, the device is more compact and efficient, the current efficiency and the mass transfer efficiency are improved, and the device is suitable for large-scale popularization and application. The complexity and the occupied area of the system are reduced, and the energy consumption and the operation cost are reduced.

The invention relates to the technical field of energy management, and discloses a green energy utilization system and method for environment-friendly mixture production. Comprising a renewable energy supply module, an energy storage module, an energy allocation and optimization module, a waste heat recovery module, a carbon capture and conversion module, a fuel characteristic monitoring and optimization module, a waste treatment and regeneration module and a full-process intelligent management module. The renewable energy source supply module is used for obtaining energy from renewable energy sources such as solar energy, wind energy and geothermal energy; and the energy storage module is used for storing redundant renewable energy sources and releasing energy in peak hours. Waste heat is effectively recycled through the high-low temperature waste heat recycling module, and energy consumption is reduced; the carbon capture and conversion module dynamically captures carbon dioxide and converts the carbon dioxide into renewable fuel or industrial raw materials, closed-loop utilization of carbon resources and synergistic effect of waste heat and carbon capture technologies are achieved, energy and carbon resources are recycled to the maximum extent, carbon emission is reduced, meanwhile, recyclable resources are provided, and environmental protection benefits are remarkably improved.

The invention relates to a three-phase-to-single-phase alternating-current transformer, a transformation device and a railway power transmission system. A first primary winding in the transformer comprises an A-phase primary winding, a B-phase primary winding and a C-phase primary winding, the first end of each phase of primary winding is correspondingly connected with single-phase alternating current, and the first ends of the phase of primary windings are mutually connected to form a neutral point; the first secondary winding comprises an A-phase secondary winding, a B-phase secondary winding and a C-phase secondary winding, the A-phase secondary winding is connected with the second primary winding, the first end of the B-phase secondary winding is connected with the first end of the C-phase secondary winding to form a neutral point, and the second end of the B-phase secondary winding and the second end of the C-phase secondary winding are jointly connected to the third primary winding; the first end of each phase of secondary winding and the first end of the corresponding phase of primary winding are dotted terminals; the second secondary winding is coupled with the second primary winding and the third primary winding. By adopting the transformer, the conversion from three-phase alternating current to single-phase alternating current can be efficiently realized.

The utility model provides a multi-color sugar bar extruding mechanism which is more compact in structure and smaller in occupied space, and relates to the technical field of sugar making. The multi-color sugar bar extruding mechanism comprises a rack, and at least two raw material cavities, an extruding block and an extruding nozzle which are mounted on the rack; the extrusion block is internally provided with at least one extrusion cavity, the extrusion cavity is divided into a plurality of single-color extrusion cavities by partition plates, the number of the single-color extrusion cavities is consistent with that of the raw material cavities, and the single-color extrusion cavities are sequentially arranged along a straight line and are sealed, and the extrusion cavity is internally provided with a driving extrusion shaft and a driven extrusion shaft which penetrate through the single-color extrusion cavities; the driven extrusion shaft and the driving extrusion shaft are arranged side by side in a spaced mode, a driving gear and a driven gear which are meshed with each other and form a gear pump structure are arranged in the single-color extrusion cavity, the driving gear is installed on the driving extrusion shaft, the driven gear is installed on the driven extrusion shaft, a feeding hole is formed in one side of the single-color extrusion cavity, and a discharging hole is formed in the other side of the single-color extrusion cavity. And a discharge hole is formed in the other side.

A tension roller set intelligently driven by a permanent magnet motor is used for providing tension for a metal plate strip in the metallurgical industry. The double permanent magnet motor sets are connected with the tension rollers through couplings, the first tension roller and the second tension roller are installed on the left side and the right side of the upper portion of the roller set rack and arranged in a high-low staggered mode in the vertical direction, and the third tension roller and the fourth tension roller are installed on the left side and the right side of the lower portion of the roller set rack and arranged in a high-low staggered mode in the height direction. One side of the mandrel is connected with the first hub through a flat key, the other side of the mandrel is connected with the second hub, the two ends of the first radial plate are welded to the first hub and the roller respectively, the first radial plate and the first hub are in reinforced connection through the first rib plate, the two ends of the second radial plate are welded to the second hub and the roller respectively, the second radial plate and the second hub are in reinforced connection through the second rib plate, the surface of the roller is coated with the glue layer, and the supporting plate is welded to the middle of the roller. The tension control device has the advantages of high response speed, high control precision, large rotating thrust, easiness in controlling the rotating speed and the like, and the tension of the tension roller can reach dozens of tons and even more than one hundred tons.

The invention discloses an automatic covering fire extinguishing device arranged at an automobile parking space, and relates to an automobile fire extinguishing device which is mounted in an underground groove at the parking space and does not affect ground parking. The device comprises two sets of rotating frames, a fire blanket folding mechanism is installed on the two sets of rotating frames, the fire blanket folding mechanism is composed of a plurality of connecting rods, and the connecting rods can be moved from a folded state to an unfolded state through a driving device; the fire blanket is fixedly connected with the plurality of connecting rods; the one-way spring door is automatically closed when being not stressed, and the one-way spring door is opened by the connecting rod when the fire blanket folding mechanism is operated; and the driving device, the smoke sensor and the infrared temperature identification instrument are electrically connected with the control device. Accurate fire extinguishing work of an automobile is achieved through the folding fire extinguishing blanket device, the fire extinguishing blanket is conveniently unfolded and accurately and completely covers the on-fire automobile, fire extinguishing automation is achieved, and the fire extinguishing effect is ensured.

An integrated cleaning and liquid supply device and online cleaning method for polyurethane polishing pads are disclosed. The device includes a base, a rotating seat, a swing arm, an independent liquid supply pipeline system and cleaning pipeline, a high-pressure nozzle array, and a positioning sensor assembly. During the polishing stage, polishing liquid is dripped through the liquid supply outlet. During the cleaning stage, the swing arm moves centripetally to a preset position aligned with the center of the polishing pad. The positioning sensor triggers a high-pressure pump, causing pure water to be sprayed as an atomized jet along the diameter of the pad surface through the high-pressure nozzle array. Simultaneously, the polishing pad rotates at a low speed, utilizing the synergistic effect of centrifugal force and high-pressure water flow to thoroughly remove residual contaminants within the micropores of the polyurethane. This invention integrates liquid supply and deep cleaning functions into the same motion mechanism, eliminating the need for machine shutdown or manual intervention. It offers advantages such as non-contact, non-destructive, thorough cleaning, and high automation, extending the life of the polishing pad and improving the stability of the CMP process.

An integrated desulfurization and decarbonization blast furnace gas treatment system comprises an adsorption device, a post-adsorption cyclone separator and a screening device or a two-stage desorption device. The adsorption device comprises a first adsorption material inlet, a second adsorption material inlet and a blast furnace gas inlet which are formed in the lower part or the bottom, and an outlet formed in the upper part or the top. And the post-adsorption cyclone separator is provided with an inlet, a gas outlet and a solid outlet. And an outlet of the adsorption device is connected with an inlet of the post-adsorption cyclone separator. And a solid outlet of the post-adsorption cyclone separator is connected to the screening device or the two-stage desorption device. Two adsorption materials are conveyed into the adsorption device at the same time to achieve synchronous removal of sulfur and carbon, separation of the two adsorption materials is achieved through the screening device, and then separation of two desorption gases is achieved, or separation of the two desorption gases is achieved through the two-stage desorption device, so that the separation difficulty of the desorption gases H2S and CO2 is greatly reduced, and the separation efficiency of the desorption gases H2S and CO2 is improved. And the treatment process of pollution reduction and carbon reduction of the blast furnace gas is effectively simplified.

The cutting machine comprises a machine table, a cutting mechanism is arranged above the machine table, a containing groove is formed in one side of the top of the machine table, a supporting mechanism is arranged on one side of the top in the containing groove in a suspended mode, and a cutting opening is formed between one end of the supporting mechanism and the corresponding side wall of the containing groove. The cutting mechanism is located over the cutting opening, a rack for fixing a hydraulic rod I is arranged on the rear side of the top of the machine table, the hydraulic rod I is connected with the cutting mechanism, extrusion mechanisms are arranged on the two sides of the cutting mechanism, an extension plate is arranged on the top of one side of the machine table, and the cutting opening is located between the extension plate and the supporting mechanism. And a mounting mechanism is further arranged at the bottom of the extension plate. The size of the equipment can be increased or decreased according to the machining requirements, so that the machining requirements of products with different lengths are met, and meanwhile, the equipment can be conveniently stored or moved and transported.

The invention discloses a double-half-bridge direct-current converter integrated structure. Comprising an input direct-current power supply Vin, a first switch tube S1, a second switch tube S2, a third switch tube S3, a fourth switch tube S4, a first resonance unit circuit, a second resonance unit circuit, a transformer T, a first synchronous rectifier tube SR1, a second synchronous rectifier tube SR2, a third synchronous rectifier tube SR3, a fourth synchronous rectifier tube SR4, a first output filter capacitor Co1 and a second output filter capacitor Co2, the transformer T comprises a first primary winding PT1, a second primary winding PT2, a first secondary winding ST1, a second secondary winding ST2, a third secondary winding ST3 and a fourth secondary winding ST4. Full-period work of the transformer winding is achieved, the winding utilization rate is high, the shortest alternating current path, high efficiency and high power density of the winding are achieved, winding loss and the occupied area are effectively reduced, control is easy, reliability is high, and implementation is easy.