61results about How to "Improve reflux efficiency" patented technology

The invention relates to a flat-panel vapor chamber which belongs to a heat radiating device of a micro electronic device and is used for heat diffusion of a power module and solving the surface deformation problem of the traditional flat-panel vapor chamber and a heat source contact surface so as to further reduce the deformation with the contact surface of a heat source part. The flat-panel vapor chamber comprises heat radiating fins and a metal cavity, wherein the metal cavity consists of a box body and a cover plate; the metal cavity is internally pumped with vacuum and filled with liquid working medium; the box body and the heat radiating fins are tightly contacted or connected into a whole; the inner wall surface of the box body is provided with capillary cores, and supporting bodies are arranged between the box body and the cover plate; the central part of the inner wall surface of the cover plate is provided with a boss, and the thickness of the boss is 0.2-2.0mm; the cross section area of the boss is larger than or equal to the contact area of the heat source; and the inner wall surface of the cover plate including the boss is provided with capillary cores. The flat-panel vapor chamber has the advantages of simple structure and convenience for manufacturing and processing, can be used for effectively reducing the surface deformation and the contact heat resistance, and has high working medium refluxing efficiency and higher working efficiency.

The invention discloses a multi-channel parallel heat pipe radiator. The radiator comprises a substrate and a radiator box, wherein an evaporation cavity is formed inside the substrate, the radiator box comprises multi-channel parallel heat pipes and radiating fins arranged outside the multi-channel parallel heat pipes, the multi-channel parallel heat pipe comprises a hollow pipe body, a division plate is arranged inside the pipe body to divide the inner space of the pipe body into more than two phase change channels, the phase change channels are communicated with the evaporation cavity, the phase change channels and the evaporation cavity jointly form a sealed phase change heat exchange cavity, grooves are formed on the inner wall of the pipe body, and capillary channels are formed on the inner wall of the evaporation cavity. The multi-channel parallel heat pipe radiator furthest exerts the effect of a capillary structure, is compact in structure, small in floor area and high in heat transfer efficiency, solves the problems that the traditional water-cooled heat exchange system is huge and the like, and meets the high-power radiation requirement of a limited space.

The invention discloses a sewage biological denitrifying device and process. The device includes a monitoring device as well as a homogeneous adjusting tank, a denitrifying system, a nitrifying pool and a secondary sedimentation tank all connected with one another in sequence through pipelines; the homogeneous adjusting tank is connected with an acid-base adding system; the denitrifying system includes a first-level denitrifying pool and a second-level denitrifying pool, both of which are connected in sequence through pipelines; the second-level denitrifying pool is connected with a silicon source adding system; the monitoring device includes a PLC and a display. The sewage biological denitrifying process includes the following steps: the sewage is mixed with a return fluid after the pH value of the sewage is adjusted, and denitrifying bacteria denitrify the nitrate nitrogen in the return fluid by utilizing organic carbon sources in the sewage; organic carbon sources are added to the mixed liquor, and the denitrifying bacteria use the additionally added organic carbon sources to completely remove the nitrate nitrogen in the mixed liquor; the nitrifying bacteria oxidize the ammonia nitrogen in the mixed liquor into nitrate nitrogen; the mixed liquor partially flows back to be subjected to denitrification treatment; the sludge and water in the mixed liquor are separated through precipitation, and then the clean water is discharged. According to the invention, the silicon sources that are required to be additionally added are not needed, and the economic cost is reduced.

The invention belongs to the technical field of computer radiation and particularly relates to a CPU (central processing unit) integrated heating pipe radiator structure. A rectangular cross-section condensation heating pipe is arranged above a flat plate evaporation heating pipe; the downside of the flat plate evaporation heating pipe is in direct contact with a heat source; fiber liquid absorbing core structures which are laminated are arranged in the flat plate evaporation heating pipe; a through hole supporting frame is arranged in the rectangular cross-section condensation heating pipe; radiating fins are arranged outside the rectangular cross-section condensation heating pipe and combine the flat plate evaporation heating pipe and the rectangular cross-section condensation heating pipe into a whole and communicate the flat plate evaporation heating pipe with the rectangular cross-section condensation heating pipe to form an inner passage type structure; the fiber liquid absorbing core structures are formed by arranging three cylindrical metal wires of which the circles are tangential to one another; a flowing passage is arranged between every two metal wires. The CPU integrated heating pipe radiator structure has the beneficial effects that due to the fact that the flat plate evaporation heating pipe is in direct contact with the heat source, the contact heat resistance is reduced, and the heat transfer power is high; a larger condensation area is obtained on the basis that steam is enabled to fully flow by the rectangular cross-section condensation heating pipe, and the heat transfer performance is high.

The invention provides a heat tube which comprises a metal tube, wherein the metal tube is sealed in two ends and is hollow; a work fluid is filled in the metal tube; a plurality of grooves extending along the length direction of the metal tube are formed in the inner wall of the metal tube; a metal net formed by mutually intersecting and knitting a plurality of metal bundles is sleeved in the metal tube; the metal net is formed by arranging a plurality of metal wires in parallel; and an elastic part is sleeved in the mesh net and applies an outward elastic force to the metal net, so that the mesh net is tightly attached to the inner wall of the metal tube. According to the heat tube disclosed by the invention, each metal bundle of the metal net is formed by arranging a plurality of metal wires in parallel; a plurality of fine groove grains formed by treating are formed on all or part of metal wires of each metal bundle; and the fine groove grains extend along the length direction of the metal wires. Each metal bundle contains a plurality of metal wires, so that reflowing channels of the metal bundle are increased; and particularly, the fine groove grains are formed on the metal wires, so strong hydrophilicity and water retention property can be realized, and the dry combustion can be avoided.

The invention discloses a flat type radiating pipe and a manufacturing method thereof. The flat type radiating pipe comprises a tube cavity with two closed ends and a tube wall axially surrounding the tube cavity; the tube cavity and the tube wall are axially provided with an evaporation section, a heat insulation section and a condensation section sequentially; the tube cavity is internally provided with a main capillary structure and an auxiliary capillary structure, wherein the main capillary structure contacts with the tube wall of the evaporation section and extends to the heat insulation section of the tube cavity; the auxiliary capillary structure contacts with the tube walls of the heat insulation section and condensation section; in the heat insulation section of the tube cavity,the auxiliary capillary structure is partially covered by the main capillary structure; and a working medium is filled in the tube cavity enclosed by the main capillary structure and the auxiliary capillary structure. The flat type radiator can be used for solving the ponding problem occurring after the radiating pipe is beaten to be very thin; the capillary force of the flat type radiator is improved, the working medium conveying ability is enhanced, and the backflow efficiency of the working medium is improved; and moreover, the composite capillary structure ensures that the heat transfer performance of the radiating pipe is greatly improved, thus the heat transfer efficiency of the flat type radiating pipe is enhanced.

The invention relates to a moving bed biofilm reactor deposition integrated denitrification reaction tower. The moving bed biofilm reactor deposition integrated denitrification reaction tower comprises a moving bed biofilm reactor and a deposition pool arranged at the periphery of the side wall of the moving bed biofilm reactor, the moving bed biofilm reactor is loaded with suspended filler, an aeration device is arranged at the edge of the bottom, a jet flow water distributor is further arranged in the center of the bottom, a water inlet is formed, a deposition pool inlet is further formed inthe side wall, a sludge reflowing opening is formed below the deposition pool, sludge flowing out of the sludge reflowing opening is mixed with inlet water, is afterwards jetted out of the edge of the bottom of the moving bed biofilm reactor through the jet flow water distributor and is then in contact with the suspended filler to form mixed liquid, and then through upward lifting of the aerationdevice, a hydraulic circulation denitrification environment of aerobic and anoxic alternating is formed. The deposition function is integrated while efficient denitrification is achieved, the technical problems that the suspended filler in the tower-type denitrification reactor is easily lost and running and flowing are not uniform are solved, the structure is compact, the occupied area is small,running is simple, timely power-free sludge reflowing is achieved, and energy is obviously saved.

The invention provides a PLC-controlled external bile regurgitation apparatus comprising a housing, a bile storage bag inside the housing, an inlet guide tube and an outlet guide tube. The inlet guide tube and the outlet guide tube are connected with the bile storage bag and disposed on the housing. A peristaltic pump, a motor connected with the peristaltic pump, a PLC (programmable logic controller) for controlling the motor and a detection sensor for detecting bile storage in the bile storage bag are disposed inside the housing. The detection sensor is connected with the PLC. The peristaltic pump is disposed at the outlet end of the bile storage bag. The detection sensor is disposed at the inlet end of the bile storage bag. The outlet guide tube is connected with the bile storage bag through the peristaltic pump. The PLC-controlled external bile regurgitation apparatus is simple in structure and convenient to use; the detection sensor allows the apparatus to detect stored quantity of bile in the bile storage bag in real time; the PLC allows the apparatus to automatically control stored quantity of bile; external bile regurgitation can be achieved timely and effectively; compared with the prior art, the PLC-controlled external bile regurgitation apparatus is high in regurgitation efficiency, accuracy and practicality.

The invention discloses a thread end knotting device, a thread winding system and a thread end knotting method. The thread end knotting device fixes a full thread wheel and drives the full thread wheel to rotate by arranging a driving shaft and a driven shaft, and knotting operation of a thread end of the full thread wheel is achieved through cooperation of an automatic clamping jaw capable of revolving around the driven shaft and a thread end grasping device. The full thread wheel can be taken down from the winding machine for off-thread knotting, while knotting is carried out, an empty thread wheel can be placed on the winding machine again for winding, the utilization rate of the winding machine can be improved, and the machining efficiency is improved.

The invention relates to a heat pipe which comprises a pipe body, wherein the pipe body comprises an evaporating part and a condensing part which are positioned at the two ends of the pipe body; the pipe body in the evaporating part region is provided with a smooth inner wall, and the smooth inner wall is covered with a master capillary structure; and the inner wall of the pipe body in the condensing part region forms an auxiliary capillary structure, and the capillary force of the auxiliary capillary structure is less than the capillary force of the master capillary structure. The method for manufacturing the heat pipe comprises the following steps of: providing the pipe body, wherein the pipe body comprises the inner wall with the auxiliary capillary structure; eliminating the auxiliary capillary structure at one end of the pipe body, and forming the smooth inner wall; providing a steel bar, and plugging one end of the steel bar with the auxiliary capillary structure into the pipe body to fill the pipe body with the auxiliary capillary structure; filling powder into the pipe body with the smooth inner wall; sintering the pipe body filled with the powder to form the master capillary structure; and extracting the steel bar.

The invention belongs to the technical field of a biogas preparation method, and provides a technology method for high-efficiency anaerobic fermentation production of biogas by lignocellulose-rich materials. The technology method comprises the following steps of material pulping, biological treatment, facultative hydrolyzing and acid production, anaerobic fermenting, solid and liquid separating, refluxing and the like. The technology method solves the problems of low pretreatment efficiency of the lignocellulose-rich materials, overhigh concentration of reflux biogas, and low biogas productionefficiency in the prior art.

The invention provides a horizontal suspension sludge air-lift backflow method. The method mainly comprises the following steps: sludge is sucked completely and in equilibrium and lifted to a biochemical reaction tank for recycling by arranging a horizontal plane-type air-lift micro-power backflow device in a suspension thick activated sludge layer and utilizing sludge suction pipes of the backflow device, which are horizontally arranged in the vertical and horizontal directions, and a compressed air control device outside the tank adjusts the air volume to control the quantity of backflow. Compared with the conventional sludge backflow method, the horizontal suspension sludge air-lift backflow method provided in the invention has a high backflow efficiency, there is no dead area or dead angle of sludge return in the large-area suspension sludge layer, and the backflow is in equilibrium; and besides, the activated sludge floc structure is not damaged, the control of backflow quantity is flexible, rapid and visual, no moving part or electrical equipment is used under water, and the backflow reliability is extremely high. Furthermore, an aeration blower of a sewage treatment plant is adopted for air supply, the corrected energy consumption for air-lift backflow is extremely low, and the energy-saving effect is obvious.

The invention discloses a fish-passing device for a water conservancy and hydropower dam. The fish-passing device for the water conservancy and hydropower dam structurally comprises a plate weir, a flow-stabilizing chamber, a fish-passing fishway, a diversion canal, a buffer box and a communicating water pipe. The plate weir is arranged above the side of the flow-stabilizing chamber, the flow-stabilizing chamber is arranged above the fish-passing fishway, the fish-passing fishway is connected with the diversion canal, and the buffer box is arranged above the diversion canal and is connected with the diversion canal through bolts in a strengthening mode. The end at the top of the communicating water pipe is connected with the buffer box, the end on the lower portion of the commutating waterpipe is connected with the lower part of the fish-passing fishway, the position of the buffer box is higher than that of the fish-passing fishway, the fish-passing fishway is provided with a fishwaywater inlet and a controllable fish luring device, and the fishway water inlet is connected with the fish-passing fishway. The fish-passing device for the water conservancy and hydropower dam is provided with the controllable fish luring device to improve the probability of shoal of fish entering the fishway and greatly increase the efficiency of backflow of shoal of fish, the controllable fish luring device is easier to operate and can be placed in water for a long time, and the trouble of repeated lifting to start and stop is reduced.

The invention relates to the technical field of radiators, and especially relates to an integrated radiator. The integrated radiator comprises an evaporation chamber and a condenser communicated with the evaporation chamber, and the evaporation chamber is provided with a liquid inlet. The condenser comprises a plurality of heat dissipation fins arranged at intervals, a plurality of connecting channels located between the adjacent heat dissipation fins and communicated with the evaporation chamber, and a collection channel fixedly connected to the ends, away from the evaporation chamber, of the heat dissipation fins, and the collection channel is communicated with the connecting channels. The condenser is directly communicated with the evaporation chamber, so that gasified steam can immediately enter the connecting channels, the heat dissipation fins can quickly cool the steam, the heat flux density is high, and the heat dissipation effect is improved.

The invention relates to a wastewater treatment method and discloses a process control method of a modified sequencing batch reactor (MSBR) system. The process control method includes that sequencing batch reactor (SBR) reaction tanks are operated alternately and intermittently and correspondingly regulate the process control method according to ambient temperatures or inflow water quality conditions. The process control method of the MSBR system has the advantages of being concise in operation modes, sufficient in aeration time and pre-setting time and capable of facilitating sediment and reducing suspended substance (SS) in discharged water, and the whole system performs continuous water inflow and continuous backflow to guarantee full mixing of backflow sludge and inflow water, so that automatic control and daily production management are facilitated; and the process control method is capable of achieving the best treatment effect under conditions of different temperatures and different inflow water qualities.

The invention discloses groove sintering type porous layer composite liquid absorbing core heat column. The groove sintering type porous layer composite liquid absorbing core heat column comprises a pipe body and a multi-groove flowing channel, wherein grooves in the multi-groove flowing channel extend from one end of the pipe body to the other end of the pipe body; two elastic separating plates are arranged in an inner empty cavity of the pipe body and divide the inner empty cavity of the pipe body into two side chambers and an intermediate chamber in the width direction; the intermediate chamber is positioned between the two side chambers; a flexible metal inner tank is stored in each of the side chambers and the intermediate chamber; the pipe body comprises a first pipe body and a second pipe body which are oppositely closed to each other; an elastic supporting part which can be contracted into the pipe body is connected between the first pipe body and the second pipe body; and thefirst pipe body and the second pipe body can be stretched to form an opening through the elastic supporting part. The groove sintering type porous layer composite liquid absorbing core heat column hasthe advantages that the capillary pressure is high; the reflowing resistance is small; the opening is conveniently formed, so that elements in the pipe body can be conveniently detected, repaired andreplaced.

The invention provides an ammonium metavanadate dewatering system and an ammonia-rich dewatering method of ammonium metavanadate, and belongs to the technical field of metallurgy. The ammonium metavanadate dewatering system comprises an arch furnace body, a water tank and a condenser. The dewatering method comprises the following steps of making industrial ammonium metavanadate into the shape of round flat cakes or granules; performing sealed heating in the dewatering furnace under ammonia-enriched environment, wherein the drying temperature is controlled to the 120-160 DEG C; collecting ammonia and vapor generated in the dewatering furnace, separating the ammonia from the vapor in a condensing manner, and anew transporting the separated ammonia back to the dewatering furnace; and performing continuous dewatering until dewatering requirements are met, stopping heating the dewatering furnace, and continuing performing reflux of the ammonia until the temperature in the dewatering furnaceis reduced to 50-80 DEG C, so that dewatering is completed. The ammonium metavanadate dewatering system and the ammonia-rich dewatering method of ammonium metavanadate disclosed by the invention havethe advantages of reducing ammonia treatment difficulty, improving dewatering efficiency and the like.

The invention relates to a reaction kettle for synthesizing scale and corrosion inhibitors from allantoin production waste liquid, which is characterized in that it includes a reaction kettle body, an inner jacket, an outer jacket, a condenser, a cooling liquid storage tank, Cooling liquid replenishment tank, gas absorption tank and controller, the reactor body is provided with an inner jacket and an outer jacket, the top of the reactor body is provided with a feeding port, and the top of the reactor body is connected to a condensing The top of the condenser is connected to the gas absorption tank through a pipeline, and the cooling liquid storage tank is connected to the cooling liquid replenishment tank through a circulation pipeline. The reaction kettle has precise temperature control and high reflux efficiency. Absorption, high synthesis efficiency, clean and environmentally friendly synthesis process, can meet production needs.

The invention discloses an automatic threading device, a winding system and an automatic threading method. The automatic threading device comprises a bearing piece and a moving mechanism driving the bearing piece to move, wherein a first threading clamping jaw and a second threading clamping jaw which are located on the outer side of the bearing piece are arranged on the bearing piece; the included angle between extension lines of the first threading clamping jaw and the second threading clamping jaw in the length direction is an acute angle, the front ends of clamping heads of the first threading clamping jaw and the second threading clamping jaw face outwards, the opening and closing directions of the clamping heads are parallel; and a gap between the two first clamping heads of the first threading clamping jaw and a gap between the two second clamping heads of the second threading clamping jaw can be opposite in position and equal in height. According to the automatic threading device, the two threading clamping jaws are adopted, and a thread end can be inserted into a threading hole in a segmented mode; on one hand, the length of a silk thread penetrating into the threading hole can be effectively increased, and the problem that the thread end retreats from the threading hole in the winding process is avoided; and on the other hand, the several-times threading of two sections of relatively short silk threads is easier to realize compared with the threading of one section of relatively long silk thread, and the threading stability is higher.

The invention discloses an ejector for air circulation of a fuel cell. The ejector is used in air path circulation of a fuel cell system, and comprises an ejector body; the input end and the output end of the ejector body are respectively provided with a galvanic pile inlet valve and an ejector outlet, and the ejector outlet is used for communicating with a galvanic pile air inlet; a backflow inlet is formed in the inner wall of the ejector body and is communicated with the galvanic pile outlet; and secondary fluid at the galvanic pile outlet is ejected into the ejector body by the backflow inlet, and is fully converged with primary fluid introduced by the electric pile inlet valve. According to the ejector, the structural diameter size of the inlet and the outlet is increased, and the diameter size of the backflow inlet is reduced, so that the ejector is suitable for an air path of a fuel cell system, the ejection requirement of the air path is met, and the liquid ejection function of the ejector is improved. The ejector realizes the circulation of air in the air path, improves the flow of the air in the air path, and increases the humidity of the air in the air path, thereby improving the performance of the fuel cell.

The invention relates to the technical field of sewage treatment equipment, and particularly relates to an efficient sludge reflux device. The efficient sludge reflux device comprises a main device body, a sewage lift pump and a regulating reservoir, wherein the main device body is divided into an anaerobic zone, a primary aerobic tank, a secondary aerobic tank, a settling pond and a clean-water reservoir; the regulating reservoir is arranged at the right side of the main device body; the sewage lift pump is arranged at the bottom of the regulating reservoir and is connected with the main device body through a transmission pipeline; an effluent discharge outlet is formed in the left side of the main device body; a gas-water mixer is arranged at the top end of the anaerobic zone, and is communicated with the earth's surface through an air inlet pipe; and a sludge suction trumpet opening is formed in the bottom of a settling zone, and is connected with the gas-water mixer through the transmission pipeline. The improved efficient sludge reflux device is simple in structure, and stable and reliable to work; automatic siphon reflux is achieved by virtue of the gas-water mixer; a reflux pipe is effectively prevented from being blocked; and the sludge reflux efficiency is effectively improved.

The invention discloses a geothermal tail water recharge system. The geothermal tail water recharge system comprises a recharge pipe and a fixed box, wherein the fixed box is fixedly arranged on the ground, and the recharge pipe penetrates through the outer side wall of the fixed box and goes deep into the ground; a transmission box is fixedly connected to the inner side wall of the recharge pipe, and a driving mechanism is rotationally connected to the inner side wall of the transmission box; a defoaming box is fixedly connected to the inner side wall of the recharge pipe, and a defoaming mechanism is rotationally connected to the inner side wall of the defoaming box; a filter screen is fixedly connected to the inner side wall of the recharge pipe, and a mounting chamber is formed in the recharge pipe; and a through groove is formed in the outer side wall of the recharge pipe. A connecting rod drives conical teeth to rotate rapidly, and the conical teeth arranged on the outer side wall of an defoaming impeller can crush residual bubbles in water flow, so that the defoaming effect is achieved, and the situation that the bubbles are gathered underground and block injected water flow is avoided. Further, the frequency of regular back raising is reduced, and the recharging efficiency of geothermal tail water is improved.

The invention discloses an oil return structure for a cooling fan. The oil return structure for the cooling fan comprises a base frame, a bearing, a stator, fan blades and a rotor, wherein the bearing, the stator, the fan blades and the rotor are installed on the base frame, an upwards protruding and hollow central pillar is formed in the middle of the base frame, the bearing is installed in the central pillar, a rotation shaft is matched with the bearing so that the fan blades can be arranged on the base frame, an oil return frame and an insulating annular piece are installed on the central pillar of the base frame, a first interval is formed between the central pillar of the base frame and the bearing, a second interval is formed between the bearing and the rotation shaft, the parts, making contact with the fan blades, of the oil return frame, the insulating annular piece and the rotation shaft passing through the first interval and the second interval form a plurality of circulating oil-return flowing passages in a matched and blocking mode, and grease thrown out from the fan blades flows back to the bearing through the oil-return flowing passages. The oil return structure for the cooling fan can basically recycle all the thrown-out lubricating grease through the oil-return flowing passages, enables the lubricating grease to be recycled continuously, is high in backflow efficiency of the lubricating grease, and can effectively reduce noise and frictional force for a long time.

The invention discloses a heat pipe soaking plate and a manufacturing method thereof. The heat pipe soaking plate includes an upper cover and a bottom box forming a sealed packaging cavity, and a porous capillary core assembly, which is located in the middle of the packaging cavity and is respectively It is connected with the lower surface of the upper cover and the upper surface of the bottom box. The lower surface of the upper cover and the upper surface of the bottom box are respectively provided with a first channel and a second channel distributed on the left and right sides of the porous capillary core assembly. It is vacuumed and injected with working fluid; the manufacturing method of the heat pipe vapor chamber includes the steps of making an upper cover and a bottom box, making and fixing a porous capillary core component, cleaning and cavity sealing welding, liquid injection and sealing, and the like. The heat pipe vapor chamber provided by the present invention, through the special design of the liquid-absorbing core, accelerates the return flow of the working fluid, effectively improves the working efficiency, and has good heat transfer performance and heat dissipation capacity; the manufacturing method of the heat pipe vapor chamber provided by the present invention is simple Easy to operate.

The invention provides a horizontal suspension sludge air-lift backflow method. The method mainly comprises the following steps: sludge is sucked completely and in equilibrium and lifted to a biochemical reaction tank for recycling by arranging a horizontal plane-type air-lift micro-power backflow device in a suspension thick activated sludge layer and utilizing sludge suction pipes of the backflow device, which are horizontally arranged in the vertical and horizontal directions, and a compressed air control device outside the tank adjusts the air volume to control the quantity of backflow. Compared with the conventional sludge backflow method, the horizontal suspension sludge air-lift backflow method provided in the invention has a high backflow efficiency, there is no dead area or dead angle of sludge return in the large-area suspension sludge layer, and the backflow is in equilibrium; and besides, the activated sludge floc structure is not damaged, the control of backflow quantity is flexible, rapid and visual, no moving part or electrical equipment is used under water, and the backflow reliability is extremely high. Furthermore, an aeration blower of a sewage treatment plant is adopted for air supply, the corrected energy consumption for air-lift backflow is extremely low, and the energy-saving effect is obvious.

The invention relates to the technical field of data processing and sharing of enterprises, institutions and government departments, in particular to a system and a method for system and method for information data return based on data lineage. The system includes a data acquisition unit to collect the information data of the data source side; a data processing unit which cleans, extracts and integrates the collected information data, and establishes a shared platform database; a data application unit which applies the integrated information data in real time on demand. The data reflux unit reflux feeds back the modified information data in real time. The system and the method provided by the invention can quickly trace the data source according to the data lineage information, thereby effectively improving the efficiency of the data return and saving the workload. It can automatically record the source information of data, reduce the error rate of manual intervention, realize the highaccuracy of data return, and avoid the loss caused by data asymmetry. The effective supplement to the data traceability management method in data management can ensure the standardization and consistency of data traceability.

The invention relates to the technical field of organic-solvent recovery and particularly discloses an energy-saving rectifying system for recovering an organic solvent. The energy-saving rectifying system comprises a low-pressure tower, a medium-pressure tower and a high-pressure tower, wherein the high-pressure tower comprises a stripping section and a rectifying section; tower-top steam of thelow-pressure tower exchanges heat with tower-bottom liquid of the stripping section by a first condenser; the tower-bottom liquid of the low-pressure tower exchanges heat with tower-top steam of the rectifying section by a reboiler; tower-bottom liquid of the medium-pressure tower exchanges heat with tower-top steam of the medium-pressure tower by a second condenser, a second throttling valve anda second heat pump; the stripping section and the rectifying section of the high-pressure tower realize heat exchange in the high-pressure tower by a first heat pump and a first throttling valve. Theenergy-saving rectifying system for recovering the organic solvent disclosed by the invention has the advantages of low energy consumption, good energy-saving effect and low operation cost.

The invention discloses a gasoline metering and backflow device with a gasoline blocking mechanism. The gasoline metering and backflow device with the gasoline blocking mechanism comprises a metering mechanism and a backflow mechanism; the metering mechanism comprises a liquid inlet communicating with a gasoline tank, a liquid outlet communicating with an engine, a liquid conveying pipeline, and a flowmeter arranged in the liquid conveying pipeline; a gasoline return opening is formed in the engine; the backflow mechanism comprises a first cavity, a liquid return opening formed in the first cavity and communicating with the gasoline return opening, a through hole formed in the lower portion of the first cavity and communicating with the liquid conveying pipeline, a gas outlet formed in the upper portion of the first cavity, the gasoline blocking mechanism arranged in the first cavity and located below the liquid return opening, and a control mechanism arranged inside the first cavity; the control mechanism comprises a rotary shaft rotationally arranged in the first cavity, a floater arranged at one end of the rotary shaft and located in the first cavity, and a plug ball arranged at the other end of the rotary shaft and located in the liquid conveying pipeline; and the gasoline blocking mechanism is located above the floater. The gasoline blocking mechanism is arranged above the floater so as to buffer high-pressure gasoline flowing into the first cavity, and the backflow efficiency is high.

The invention discloses a distillation reflux instrument for detecting volatile matters in food and a sample pretreatment method, and the distillation reflux instrument comprises: a distillation unit which is used for distilling a to-be-treated sample; a heating unit used for providing water vapor for the distillation unit so as to heat the to-be-treated sample; an end point quantification unit for monitoring the amount of fraction produced by the distillation unit; and a control unit used for controlling the on-off of circuits of the distillation unit and the heating unit according to a signal output by the end point quantification unit. The instrument has the advantages of water resource saving, is simple and reliable in test operation, high in automation degree and good in man-machine interaction, can effectively improve the detection efficiency and the detection precision, is suitable for determination of the contents of nitrosamine, cyanide, volatile phenol and the like in organic matters, and has the advantages of novel idea, good safety, sample pollution prevention and high reflux efficiency.

The invention provides a coking wastewater coupling treatment system and method. The system comprises a multi-stage biochemical unit, a contact reaction unit, a coagulation unit and a precipitation separation unit which sequentially communicate with one another in the coking wastewater circulation direction, and the contact reaction unit is connected with the multi-stage biochemical unit through a medium backflow pipeline. The precipitation separation unit is connected with the coagulation unit through a sludge return pipeline. Two-stage backflow is arranged, the sludge / medium backflow efficiency is improved, the technological process is simple, the complicated traditional treatment technological process is shortened while toxic and harmful substances in the coking wastewater are efficiently removed, the technological construction cost and energy medium consumption are reduced, and the treatment efficiency is high.