216results 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 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 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 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 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 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 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 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 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.

The invention discloses a waste incineration power station waste heat utilization system integrating biomass gasification, and relates to the field of biomass resource utilization and energy conservation and emission reduction, and the waste incineration power station waste heat utilization system integrating biomass gasification comprises a waste incineration boiler, a steam circulation generator set, a flue gas purification system and a biomass gasification and waste heat recovery coupling system. Exhaust gas of the turbine is conveyed to a condenser through a pipeline and condensed into water through the condenser, and the condenser is connected with a condensate pump through a pipeline. The flue gas purification tower receives flue gas discharged by the waste incineration boiler through a pipeline and purifies the flue gas, and the treated flue gas is connected with the bag-type dust collector through another pipeline for retreatment; the waste incineration boiler conveys gas to the biomass gasification furnace through a pipeline, and the biomass gasification furnace generates straw fuel gas and conveys the straw fuel gas to the cyclone separator through a pipeline. Compared with the prior art, the system has the advantages that the energy utilization efficiency is improved; the investment cost is reduced; the smoke exhaust loss is reduced; the economic benefit is improved.

The application provides an automobile engine compartment drainage air intake system and a vehicle, and belongs to the technical field of automobile parts, wherein the automobile engine compartment drainage air intake system comprises a ventilation cover plate, an air chamber, a left drainage groove structure and a right drainage groove structure; the middle part of the top plate of the air chamber is concave downward, and an accommodation space extending along the length direction of the air chamber is formed between the top plate and the ventilation cover plate; the left drainage groove structure is arranged below the ventilation cover plate; the right drainage groove structure comprises a drainage groove body, the drainage groove body is arranged in the accommodation space, and the opening of the drainage groove body is communicated with the water inlet. The automobile engine compartment drainage air intake system provided by the application correspondingly sets the drainage groove structure as the left drainage groove structure and the right drainage groove structure; two drainage groove structures are used for drainage respectively, so that the drainage groove structure does not span the width direction of the vehicle body, the space occupation area of the drainage groove is smaller, the size of the engine compartment is reduced, the layout in the engine compartment is optimized, and the engine compartment maintenance is facilitated.

This invention proposes an active energy storage type multi-winding transformer-type adjustable reactor and its control method, belonging to the technical field of power electronics and flexible AC transmission and distribution systems. It includes a multi-winding transformer, whose primary winding is electrically connected to the AC power grid; at least one set of thyristor hierarchical switching circuits, which are connected in series with the corresponding thyristor-switching windings on the secondary side of the multi-winding transformer; the AC side of a PWM inverter control circuit is electrically connected to one of the active control windings on the secondary side of the multi-winding transformer; an energy storage module is connected in parallel on the DC side of the PWM inverter control circuit to inject a compensation current containing reactive and active components into the active control winding, thereby achieving continuous fine-tuning of the equivalent reactance value and active power exchange with the AC power grid. This invention can be applied as a multifunctional power electronic device in fields such as smart grids, new energy transmission and distribution, and comprehensive power quality management.

This utility model discloses a lifting AGV transport vehicle, including a chassis with steering wheels mounted around the bottom of the chassis; a four-gantry synchronous lifting system mounted on both sides of the chassis, comprising four sets of vertically synchronously moving sliding frames; a roller conveyor fixedly mounted on the four sets of sliding frames; a cover fixed on both sides of the chassis; a control box fixedly mounted on one side of the cover; and a laser radar fixedly mounted on the center of the four sides of the chassis, communicating with the control box. In this utility model, a large-stroke vertical adjustment is achieved through a hydraulic system, enabling precise docking with roller conveyors of different heights without the need for additional transfer stations or external lifting equipment. This achieves automatic cross-layer transport, improving the flexibility of the logistics system. Furthermore, the four-gantry synchronous lifting system is equipped with a synchronous chain and sprocket transmission mechanism, converting the linear motion of the hydraulic cylinder into the synchronous lifting of the sliding frames, effectively avoiding platform tilting caused by hydraulic fluctuations or mechanical deviations.

This invention belongs to the field of conveying equipment technology, specifically disclosing a conveying device and method for egg supply, including a conveyor belt machine, a chamber, and a blower. The conveyor belt machine's external belt consists of three sets of circular tracks that wrap around the conveyor belt machine. The circular tracks have notches spaced evenly along their circular paths. The chamber is fixedly installed above the conveyor belt machine and near its center. A ventilation component is installed above the chamber. A U-shaped frame is fixedly mounted above the conveyor belt machine and below the ventilation component. A crack visual detection marking component is installed above the U-shaped frame and corresponding to each circular track. This invention integrates wiping, flipping, drying, visual detection, and marking functions, enabling online identification and marking of cracked eggs produced after cleaning. This effectively prevents cracked eggs from being mixed with qualified products, significantly improving the overall quality and automation level of egg supply.

The invention relates to the technical field of hydrogen storage devices, in particular to a hydrogen storage tank with a stirring function and a hydrogen storage device. The two gas guide pipes are used in the hydrogen storage tank, and overall stirring of hydrogen storage alloy particles is achieved. Through threaded connection between the threaded rod and the fixed partition plate, the hydrogen storage alloy particles in the threaded rod are stirred up and down by the gas guide pipe and the stirring blade, and stirring plates do not need to be mounted on different layers, so that the space can be saved, the design of the hydrogen storage tank is more compact, and the complexity of the internal structure is reduced; meanwhile, maintenance and replacement are easier, the number of stirring plates needing to be maintained is reduced, and the maintenance cost and complexity are reduced. And through cooperative use of a driving bevel gear and a driven bevel gear, a gas guide pipe and a stirring blade rotate and stir while moving up and down along with a threaded rod, so that the stirring effect is further improved, the hydrogen can fully react with the hydrogen storage alloy particles, and the storage amount of the hydrogen is increased.

The utility model discloses a high-rigidity half-moon groove tool rest unit of a combined lathe and the combined lathe, belongs to the technical field of numerical control combined lathes, and solves the problems that a traditional linear guide rail feeding structure is large in occupied space, poor in rigidity and unstable in machining quality. The tool rest unit comprises a tool rest body, and a guide groove is formed in the circumferential face of the tool rest body and axially penetrates through the tool rest body. A sliding groove plate matched with the guide groove is arranged in the guide groove. The sliding groove plate is shorter than the guide groove and used for bearing a cutter. And the section of the guide groove is half-moon-shaped. Limiting plates are installed on the portions, on the two sides of a groove opening of the guide groove, of the tool rest body respectively, and the limiting plates are pressed on the sliding groove plates so as to limit movement of the sliding groove plates in the radial direction. Due to the fact that the sliding groove and the sliding groove plate are arranged on the peripheral face of the tool rest body, occupied space is reduced, and rigidity and transmission efficiency of the whole structure are improved. The tool rest unit is matched with a narrow space scene of a multi-spindle lathe, and the machining requirements of high precision and high efficiency are met.

The present application belongs to the technical field of water treatment, and discloses a water treatment method and system adopting unidirectional pulse high-voltage electric field discharge oxidation, alternating current electric field fixed spiral wing fin static disturbance electric field microflocculation, conventional magnetic field separation, and anaerobic reduction reaction. A pressurizing water pump is installed in series at the outlet of a water source, and the treated water enters the unidirectional pulse high-voltage electric field discharge oxidation device, the alternating current electric field fixed spiral wing fin static disturbance microflocculation device, and the magnetic separation device in sequence through pressurization, and then enters the conical bottom anaerobic reduction reaction water tank, and is supplied to the user after pressurization by the outlet pressurizing pump; when the magnetic separation device is saturated, the backwashing process is started, the backwashing adopts steam-water backwashing, the backwashing sewage enters the conical bottom anaerobic reduction reaction water tank, a backflow submersible metering pump is arranged at the upper half of the water tank, the outlet of the metering pump is connected to the water inlet of the unidirectional pulse high-voltage electric field discharge oxidation device and is provided with an electromagnetic valve, and is used for strengthening the oxidation microflocculation again, thereby saving the cost of the traditional process by 50-80%.

The utility model provides a kind of installation device for wall pre-buried repeated grounding, and the grounding busbar and connecting body are connected in accommodating cavity by setting installation frame, installation frame is composed of two side plates and transverse plate and open-close mechanism that can be opened and closed, open-close mechanism opens, grounding busbar and connecting body are placed in installation frame, then open-close mechanism is closed, grounding busbar and connecting body are sleeved, open-close mechanism is in the back inner wall side of accommodating cavity;Using tool abutting clamping mechanism's resistance rod, so that grounding busbar and connecting body are tightly connected.The above technical scheme is adopted, the setting of open-close mechanism, when using, open-close mechanism can be directly entered from the opening side of accommodating cavity, and grounding busbar and connecting body are placed in installation frame, reduce the space occupation area when sleeving grounding busbar and connecting body;Resistance rod is provided with insertion hole, can be connected with the tool of screwing, compared with fixed rotating screw rod, it can extend outside accommodating cavity when screwing, and it is easier to exert force.

The invention belongs to the technical field of transformer stacked iron core manufacturing, and particularly provides a double-station iron core automatic stacking production line and method. Comprising a yoke column double-feeding device, a yoke column grabbing device, a yoke column double-pre-positioning device, a yoke column lamination device, a top frame, a three-column double-pre-positioning device, a three-column lamination device, a three-column grabbing device, a three-column double-feeding device, a double-station finished product output device and a bottom frame. The problems that in the feeding process of an existing stacking production line, the feeding efficiency is low due to the fact that the direction of iron core sheets needs to be changed by means of an external rotary conveying device, the stacking production line is linearly distributed, the occupied space is large, and the stacking quality consistency is difficult to guarantee are solved. Efficient grabbing and stacking of double-station iron cores are achieved, the overall stacking efficiency and precision of the iron cores are greatly improved, stacking of the iron cores in different feeding directions is met, the structure is exquisite, the appearance is attractive, and the occupied area and the operation space are reduced.

An automatic bus duct riveting system, comprising a clamping structure, a feeding position for placing the bus duct to the clamping structure, a riveting structure and a feeding structure for conveying the riveted bus duct; the clamping structure comprises a clamping support, a rotary frame body rotatably connected with the clamping support, a plurality of rotatable bases on the rotary frame body and a clamping device on the base; the rotary frame body rotates to realize the circulation of the bus duct between the feeding position and the riveting structure, and the rotatable base rotates to adjust the riveting direction of the bus duct; the riveting structure comprises a mechanical arm, a riveting device detachably connected with the end of the mechanical arm and a grabbing device; the mechanical arm switches the working end through a quick-change device, and after riveting, the grabbing device is replaced to move the bus duct to the feeding structure. The present application solves the problems of manual handling for work position switching and secondary clamping for riveting surface switching through the clamping structure; solves the problems of riveting and sequence splitting and equipment redundancy through the riveting structure, reduces the dependence on manual operation, and improves the production efficiency and processing precision.

The invention discloses energy-saving type drying equipment for jujubes, and relates to the technical field of jujube drying, the energy-saving type drying equipment for jujubes comprises a shell, a spiral tower type conveyor and an air heater, the shell is provided with a feeding port and a discharging port, the spiral tower type conveyor is installed in the shell, the spiral tower type conveyor is provided with a conveying belt, and the conveying belt is installed in the shell. The uppermost end of the conveying belt is located below the feeding port, the lowermost end of the conveying belt is located at the discharging port, the conveying belt is in a net shape, the inner side and the outer side of the conveying belt are each provided with a protection plate, the conveying belt moves from the low position to the high position, and the air heater is located in the shell. And an air outlet of the air heater is positioned below the conveying belt. The equipment has the effects of reducing the energy consumption required by the whole equipment and reducing the occupied area of the equipment.

This invention belongs to the field of oil and gas field wastewater treatment technology, and discloses a treatment system and method for oil and gas field fracturing flowback fluid. The system comprises a de-gelling and flocculation system, a microbubble ozone system, a reverse osmosis interception system, and a bio-enhanced degradation system connected in sequence. The de-gelling and flocculation system receives the raw water to be treated and, through the synergistic effect of chemical de-gelling and physical swirling fields, separates and removes oily substances and suspended solids from the raw water, forming de-gelling permeate. The microbubble ozone system is used to deeply oxidize the de-gelling permeate, forming oxidation permeate. The reverse osmosis interception system is used to desalinate and deeply purify the oxidation permeate, forming reverse osmosis permeate. The bio-enhanced degradation system is used to degrade biodegradable pollutants in the reverse osmosis permeate to obtain system effluent. This invention achieves the comprehensive goal of a compact process and stable effluent that meets standards for reuse or discharge through a closed-loop treatment path of progressive pollutant reduction and differentiated purification.

The invention discloses a texturing device for preparing a back contact battery. The texturing device comprises a texturing groove; the bearing and conveying assembly comprises a bearing and conveying unit, and the bearing and conveying unit comprises a bearing and conveying disc; the driving assembly comprises a driving unit and a transmission unit, the transmission unit comprises a transmission shaft, the transmission shaft is connected with transmission discs, the adjacent transmission discs are connected through connecting rods, and the driving unit is in transmission connection with the transmission discs; the turbulent flow assembly comprises a turbulent flow unit, and the turbulent flow unit comprises a turbulent flow plate. According to the texturing device for preparing the back contact battery, the bearing transmission disc is driven to rotate through the driving assembly, the contact surface is reduced, silicon wafer transmission is achieved, meanwhile, the contact position of a silicon wafer and the bearing transmission disc is changed, and therefore imprint on the back face of the silicon wafer can be reduced; when the driving assembly operates, the spoiler is driven to rotate to promote the flowing of the reaction liquid and the contact reaction with the silicon wafer, so that the texturing quality is improved on the basis of reducing driving sources, simplifying the structure and reducing the energy consumption.

The utility model discloses a child scooter capable of reducing impact. The child scooter comprises a main frame, a left support in damping connection with the inner side of the left end of the main frame, a right support fixedly connected with the outer side of the right end of the main frame, hubs and tires, wherein the hubs and the tires are arranged in the left support and the right support. Tensioning structures used for hubs are arranged in the left support and the right support, a supporting anti-falling structure is arranged on the rear side of the left end of the right support, a locked direction adjusting handrail is installed on the inner side of the upper end of the left support in a nested mode, and rubber sleeves fixedly pasted to the direction adjusting handrail are arranged on the outer sides of the front end and the rear end of the direction adjusting handrail in a nested mode. A locked bearing rod is arranged on the inner side of the upper right end of the main frame in a nested mode, and a cushion is fixedly installed on the bearing rod. According to the child scooter capable of reducing the impact, the hub can be conveniently tensioned, the impact of the child scooter is reduced, damping can be conveniently conducted on the buttocks of a child in the using process, the comfort degree of the child is high, the child scooter can be conveniently supported and prevented from falling down, and collision damage and the occupied area are reduced.

The utility model provides a kind of integrated double independent air duct refrigeration system, including box, evaporator, condenser;The evaporator and condenser are respectively installed in the two sides of box, the box on the outside of evaporator is opened outdoor air inlet, outside air enters the air duct where evaporator by outdoor air inlet, air duct is equipped with air supply fan, air supply fan pushes air to flow through evaporator;Air is sent into refrigeration area after heat exchange with evaporator;Another side of box is equipped with corresponding outdoor air inlet close to condenser, indoor air outlet is equipped opposite outdoor air inlet, outdoor air enters the air duct where condenser by outdoor air inlet, air duct is configured and installs exhaust fan, exhaust fan will wind flow flow through condenser, condenser releases heat, exhaust fan will absorb heat after hot air discharge outdoor.This new double independent air duct design avoids hot and cold air mixing, evaporator and condenser can efficiently carry out heat exchange in relatively independent airflow environment.

The invention relates to an electronic-grade acetic ether production method and device based on reactive distillation-dividing wall tower distillation reinforcement. The device is composed of a reactive distillation system, an alcohol ester recovery tower system, an acetic ether concentration system and an acetic ether refining dividing wall tower system. An esterification reactor of the reactive distillation system adopts strong acid ion exchange resin as a catalyst; the contents of acetic acid and ethanol in the acetic ether reaction liquid are controlled by feeding fresh ethanol and acetic acid in a reactive distillation system; and crude ethyl acetate from which water and ethanol are removed by the ethyl acetate concentration tower is subjected to light component removal and heavy component removal by an ethyl acetate refining dividing wall tower to obtain an electronic-grade ethyl acetate product. The product purity is extremely high and stable, the whole set of process is designed for obtaining electronic-grade products, the final product purity stably reaches 99.99% or above, and the requirements of the high-end electronic chemical market are met. A dividing wall tower technology is adopted, light component removal and heavy component removal processes are integrated in a single tower, the number of devices and the occupied area are reduced, and energy is saved by 20%-30% compared with a traditional process.

The utility model discloses an automatic feeding and discharging ceramic roller forming device which comprises a workbench, a feeding mechanism and a discharging mechanism. A conveyor is installed on the top of the workbench. The rolling assembly is arranged at the top of the workbench, the rolling assembly comprises a turnover arm capable of turning over, and the end of the turnover arm is rotationally connected with a rolling head; the automatic feeding and discharging device has the advantages that by the adoption of the circulating rotation machining station and the matched feeding and discharging assembly, automation of the machining process is achieved, manual intervention is reduced, and production efficiency is improved; the machining function and the feeding and discharging function are integrated, the occupied area and the number of equipment are reduced, and the space and the cost of a production line are saved; continuous production can be achieved through the circular rotating machining station, the material changing time and the waiting time are saved, and the production efficiency and the productivity are improved; the camera can monitor the appearance of the product in real time, discover and process product defects in time, and ensure the quality stability of the product.

The invention provides a circulating system equipped with a submersible type cylindrical linear induction electromagnetic pump, which is characterized in that the electromagnetic pump is arranged in a container filled with liquid metal along the longitudinal direction, an inert gas tank is arranged for sealing, and a radiating fin structure is arranged on the outer side of an external stator of the electromagnetic pump. According to the submersible electromagnetic pump circulation system, the occupied area and weight of the liquid metal circulation loop are remarkably reduced, the service life of the liquid metal circulation loop under different working condition requirements is greatly prolonged, and the requirements of deep sea, deep space and other extreme environments for robustness and light weight of equipment can be effectively met.