52results about How to "Flow is easy to control" patented technology

The invention discloses an aluminum oxide separation type impurity removal device with double iron removers, and particularly relates to the technical field of iron removal and impurity removal, the aluminum oxide separation type impurity removal device comprises a supporting frame, a material guiding and impurity removal assembly is arranged on the supporting frame, the material guiding and impurity removal assembly comprises an impurity removal bin arranged at the top of the supporting frame, and a top plate is clamped to the top of the impurity removal bin. Aluminum oxide in the aluminum oxide storage bin falls into the impurity removal bin and is borne by the reinforced impurity removal supporting rod, the conveying flow of the aluminum oxide is easy to control, the situation that the aluminum oxide is stacked together and consequently the impurity removal effect is poor is also avoided, impurities falling from the aluminum oxide can be extracted into the dust collection box to be stored, and the service life of the aluminum oxide is prolonged. A vibration motor is started to vibrate an extension plate and a supporting rod, then a spring is stressed, the amplitude is amplified, stubborn impurities on the aluminum oxide are shaken off, a discharging frame and a reinforced transfer box are blocked through displacement of a partition plate, and therefore the aluminum oxide is blocked, quantitative conveying is easy after impurity removal of the aluminum oxide is completed, and the practicability is high. And subsequent packaging and transportation are facilitated.

The invention belongs to the technical field of automatic sorting, and particularly relates to building waste reclaimed material automatic sorting equipment and method.The equipment comprises a vibrating feeder, a plurality of funnel-shaped material distribution grooves are formed below an ultrasonic atomization spraying device side by side, a belt conveyor is used for conveying building waste crushed materials, and the vibrating feeder is used for feeding the building waste crushed materials; a fluorescence detection box is arranged above the belt conveyor, connecting columns in one-to-one correspondence with the funnel-shaped material distribution grooves are arranged in the fluorescence detection box, ultraviolet lamps are arranged on the connecting columns, and photosensitive sensors are arranged on the rear sides of the ultraviolet lamps. According to the invention, through cooperation of fluorescence recognition feedback and high-pressure gas, building waste crushed materials are automatically sorted, building waste materials of different substances with similar density, size, color, shape and the like can be finely sorted, and the device has the characteristics of sensitive reaction, accurate distinguishing, high precision and the like.

The utility model discloses a balloon dilatation catheter with a double-cannula structure, relates to the technical field of medical instruments, and solves the technical problem that far-end myocardium or tissue ischemia of a patient is easily caused when a balloon of the balloon dilatation catheter is kept in a dilatation state for a long time. Comprising an outer tube, an inner tube penetrating through the outer tube and a balloon arranged on the outer tube in a sleeving mode, the outer tube is composed of a first outer tube body and a second outer tube body, the inner tube is composed of a first inner tube body and a second inner tube body, a transition part of an annular structure is installed between the first outer tube body and the second outer tube body, and a blood channel is formed in the transition part in the axial direction in a penetrating mode. The blood channel is communicated between the first inner tube and the second inner tube, and a guide wire is arranged in the blood channel, the first inner tube and the second inner tube in a penetrating mode. When the balloon is kept in an expansion state for a long time, blood of a patient can still penetrate through the balloon to supply blood to far-end myocardium or tissue, so that body injury caused by lack of normal blood supply to the patient is avoided.

A steel pipe threaded end prefabrication, thermal shrinkage and diameter expansion integrated process method relates to the technical field of steel pipe machining and comprises the following steps: firstly, performing thermal treatment on a to-be-machined part at one end of a steel pipe to reach a certain temperature, then fixing the steel pipe, and pushing an outer mold mounted on a mold towards the steel pipe to perform diameter shrinkage on the to-be-machined part of the steel pipe; and after hole shrinkage is completed, the die is removed, an inner die is installed on the die and pushed towards the steel pipe so that the to-be-machined part of the steel pipe can be expanded, after hole expansion is completed, the die is removed, and the steel pipe is cooled so that machining can be completed. By expanding the diameter of the to-be-machined part at one end of the steel pipe, internal threads can be machined, then the to-be-machined part can be in direct threaded connection with the end, provided with external threads, of the steel pipe, and compared with a traditional steel pipe connected through connecting pieces such as a hoop or a flange plate, the sealing performance, the connecting strength and the mounting efficiency can be improved; and is more suitable for deep wells, oil wells and other occasions.

The utility model discloses an automotive adjustable damping shock absorption electromagnetic valve which comprises a shell, a valve sleeve assembly matched with one end of the shell, an electromagnetic coil located in the shell and a push rod assembly at least partially surrounded by the electromagnetic coil. The valve sleeve assembly comprises a valve sleeve provided with a main valve element cavity and a pilot valve element cavity, a main valve element arranged in the main valve element cavity, a valve seat arranged at one end of the main valve element cavity and at least partially shielding the main valve element, and a pilot valve element at least partially axially arranged in the pilot valve element cavity and driven by the push rod assembly. The utility model has the advantages that the internal structure is optimized, the number of parts is reduced, the use of a flow guide channel reed for control is avoided, and the hardness of the shock absorber is adjusted according to the flow required by the cavity of the shock absorption cylinder.

The present invention relates to a high-temperature molten salt pump, and in particular to a heat pipe-assisted heat dissipation system for cooling the bearings on a high-temperature molten salt pump. It includes a bearing box, a heat exchange system and an air cooling system. The heat exchange system is composed of main heat dissipation ribs, U-shaped heat pipes, and umbrella-shaped heat dissipation ribs by welding; the air cooling system includes an upper wind wheel, a lower wind wheel, a cover tube, a spiral guide vane, and a continuous spiral groove. The bearing box is equipped with a bearing, and the outer wall of the bearing box is provided with a main heat dissipation rib. The main heat dissipation ribs are vertically opened to install a pair of U-shaped heat pipes, and umbrella-shaped heat dissipation ribs are evenly arranged around the condensation end; an upper wind wheel is arranged at the upper end of the pump shaft, and a lower wind wheel is arranged at the lower end; a spiral guide vane is arranged on the inner wall of the cover tube to form a continuous spiral groove; an air hole is opened on the motor seat, and the air flow can be discharged from it, and further discharged from the system through the lower wind wheel. The present invention utilizes heat pipes to assist the fins in heat dissipation, and adds spiral guide vanes to cooperate with the cover tube to form a controllable air duct, so that the heat inside the system is discharged, thereby ensuring the service life of the bearing.

A heat pump system for a vehicle includes: an air conditioning unit including a compressor, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger connected by a refrigerant line to circulate refrigerant through the refrigerant line; and a cooler connected to the refrigerant line through a second connection line and configured to perform heat exchange between the refrigerant supplied from the air conditioning unit and the coolant to adjust a temperature of the coolant, in which the air conditioning unit further includes: a first control device provided in the refrigerant line downstream of the compressor; the first heat exchanger is connected to the first control device through a first connecting pipeline; a second control device provided upstream of the cooler and the fourth heat exchanger at a position where the refrigerant line is connected to the second connection line; a third control device provided in the refrigerant line between the fourth heat exchanger and the compressor; the third connecting pipeline comprises a first end and a second end; and a fourth control device.

The utility model relates to the technical field of building water supply and drainage, and discloses a building water supply and drainage structure capable of switching water supply pipeline paths, which comprises a lower shell, the top of the lower shell is fixedly connected with an upper shell, the interior of the lower shell is fixedly connected with a main flow pipeline, one end of the main flow pipeline is fixedly connected with a branch flow pipeline, and the branch flow pipeline is fixedly connected with a water supply pipeline. And switching devices are fixedly connected to the two ends of the shunting pipeline. The device is fixedly installed by arranging the lower shell and the upper shell, the main flow pipeline is a main pipeline in a water supply system and is used for conveying water from a water source, the switching device is installed on the main flow pipeline and can control the communication state of at least one of the first branch pipeline and the second branch pipeline, and the rotating valve adjusts opening and closing. The first branch pipeline and the two pipelines are connected to the main pipeline in parallel and connected with the main pipeline respectively, and the first branch pipeline and the two pipelines can convey water to different areas or places with different purposes.

The utility model relates to the technical field of earring production molds, and discloses a special flow line texture earring production mold which comprises a mold body, a flow channel is formed in the surface of the mold body, a top edge sprue is arranged at the tail end of the flow channel and located on the surface of the mold body, and the flow channel is designed to be in an irregular streamline shape. A first mold cavity is formed in the position, located on the surface of the mold body, of one end of the runner, and a small lug ring is arranged in the first mold cavity. According to the special flow line texture earring production mold, through the designed irregular streamline flow channel and the first mold cavity and the second mold cavity which are specific in shape, the flow discrimination of materials can be effectively reduced, the pressure can be effectively kept, and therefore the forming precision is improved, stress concentration points are reduced, and the overall quality of finished products is improved; and meanwhile, the material at the pouring gate is convenient to cool and remove, the post-treatment workload is reduced, and the appearance quality of a product is improved.

This invention relates to the field of bulldozer technology and provides a hydraulic control system and method for bulldozers. It recovers the energy generated by the descent of the bulldozer's working device through an accumulator. When the working device is lifted or other mechanisms require hydraulic pressure, a solenoid valve is opened. A solenoid proportional valve opens its valve core according to the compensation flow required by the second inlet valve. The oil in the accumulator provides a corresponding flow rate according to the opening degree of the solenoid proportional valve. The solenoid proportional valve sends the hydraulic oil from the accumulator through a first check valve to the inlet of the second inlet valve. The solenoid valve receives a compensation signal and opens the oil outlet passage of the accumulator. The hydraulic energy stored in the accumulator, after being regulated by the control terminal of the solenoid proportional valve, is then delivered through the first check valve to the inlet of the second inlet valve and subsequently enters the lifting chamber of the lifting cylinder. This compensates for the lifting of the blade, achieving stable and controllable oil flow and ensuring smooth movement of the working device or other actuators.

The application provides a traditional Chinese medicine purification device, which comprises a first medicine liquid alcohol precipitation tank and a second medicine liquid alcohol precipitation tank, the first medicine liquid alcohol precipitation tank is connected with a first liquid storage tank, the second medicine liquid alcohol precipitation tank is connected with a second liquid storage tank, the first liquid storage tank and the second liquid storage tank are connected with a third liquid storage tank, a central transmission shaft is arranged in the first medicine liquid alcohol precipitation tank and the second medicine liquid alcohol precipitation tank, a spraying stirring structure and a medicine liquid extraction structure are arranged on the central transmission shaft, and a heating system is arranged on the spraying stirring structure. The use method of the traditional Chinese medicine purification device is characterized in that the spraying stirring structure uniformly sprays alcohol liquid in the medicine liquid alcohol precipitation tank and stirs the alcohol liquid at the same time, so that the alcohol liquid and the medicine liquid fully act on each other, the alcohol liquid is injected into the alcohol precipitation tank through the hole and is stirred at the same time, and the mixed liquid is sucked into the liquid storage tank through the hole, so that the structure is simple, the stirring is sufficient, the flow is controllable, and the filtration is sufficient.

The invention discloses a lubricating system for a hybrid gearbox of an agricultural machine. The lubricating system realizes comprehensive oil lubrication management of lubrication of the whole gearbox, and realizes fixed-point, quantitative and flow-controllable precise lubrication. Aiming at the characteristics that the special hybrid gearbox for the agricultural machine is large and long, the difference of internal parts is large, and the working conditions are changeable and complex, the arrangement of main and auxiliary oil ways is utilized, so that the internal oil management and fixed-point distribution are more accurate, reasonable and controllable. Aiming at real-time working conditions and lubrication requirements, high-low pressure conversion loop lubrication flow compensation is utilized, real-time controllable lubrication flow, low cost, high efficiency and good lubrication effect are achieved, and the comprehensive performance, safety and reliability of a transmission system are improved; in addition, the lubricating system of the agricultural machine hybrid gearbox has a constant temperature control function, a main oil way and an auxiliary oil way share a temperature control loop, the temperature of the gearbox is controlled within a required temperature interval according to the use requirement of the agricultural machine hybrid gearbox, the efficiency and reliability of the whole machine are further improved, and the lubricating system is suitable for industrial large-scale use and popularization.

The invention relates to the technical field of air doors, in particular to a fan air door for controlling air flow and a using method thereof. Comprising a fan body and an air door shell, two symmetrical air door regulation and control assemblies are arranged in the air door shell, a pulling and connecting assembly is arranged between the air door regulation and control assemblies and the inner wall of the air door shell, and one ends of the two air door regulation and control assemblies slide on the top of an inner cavity of the air door shell; the other end generates resilience force to be attached to the side wall of the inner cavity of the air door shell. When air flow is controlled, the blocking range of airflow flowing is reduced, the flowing smoothness is improved, in addition, a triangle shape is formed between the pulling connecting assembly and the air door regulation and control assembly to assist in bearing airflow impact, the service life is prolonged, and meanwhile rapid dust removal is conducted on the surface of the air door regulation and control assembly.

The three-way valve comprises a valve body and a movable mechanism, the valve body is provided with a first inner cavity, the side wall of the valve body is connected with a water inlet pipe and a first water outlet pipe, the water inlet pipe and the first water outlet pipe are arranged in the axial direction of the valve body, and the water inlet pipe and the first water outlet pipe are both communicated with the first inner cavity; the movable mechanism comprises a valve element, a piston rod and a first spring, the valve element is slidably connected to the valve body and provided with a second inner cavity and a second water outlet pipe, the second water outlet pipe communicates with the second inner cavity, the piston rod penetrates through the valve element, the piston rod is fixedly connected to the bottom wall of the first inner cavity, and a sealing block is arranged on the piston rod in a protruding mode in the radial direction. The sealing block can be in sealing connection with the valve element so that the first inner cavity and the second inner cavity can be separated or communicate, and the two ends of the first spring abut against the valve body and the valve element correspondingly so as to drive the valve element to move in the direction away from the valve body. The water flow can be conveniently controlled, the structure is simple and compact, and the reliability is improved.

The utility model provides a combined boring cutter bar with a water outlet function for a high-pressure oil rail oil supply pipe. The combined boring cutter bar with the water outlet function for the high-pressure oil rail oil supply pipe comprises a cutter bar and cutter sleeve shell, wherein a mounting hole is formed in the cutter bar and cutter sleeve shell; the boring cutter rod is arranged in the mounting hole, and one end of the boring cutter rod extends out of one side of the mounting hole. According to the combined boring cutter bar with the water outlet function for the high-pressure oil rail oil supply pipe, the high-pressure oil pipe, the second through hole in the right-angle pipe connector, the locking nut, the first through hole in the connecting rod and the O-shaped ring are matched to directly lead to the cutter bar water outlet hole in the boring cutter bar, and finally high-pressure oil is directly sprayed out from the head of the boring cutter bar, so that the stability is high, and the service life is long. The lubricating and cooling performance is greatly improved, the lubricating and cooling performance is not blocked by a product, the flow speed of high-pressure oil can be controlled through the flow meter, and the flow of sprayed high-pressure oil can be conveniently controlled.

The utility model relates to the technical field of baby products, in particular to a portable easy-to-suck anti-choking and anti-leakage nipple bottle which comprises a bottle body, a bottle cap is installed at the upper end of the bottle body, a rotating groove is formed in the bottle cap, a rotating disc is installed in the rotating groove, a flow guide groove is formed in the rotating disc, and communicating grooves are formed in the upper face and the lower face of the inner wall of the rotating groove. The inner wall of the rotating groove is provided with a plurality of moving grooves, the outer wall of the bottle cap is provided with annular grooves, the annular grooves are communicated through the moving grooves, the outer wall of the rotating disc is fixedly connected with a plurality of moving blocks, and the moving blocks are located in the moving grooves respectively. A rotating ring is installed in the circular ring groove, and the inner wall of the rotating ring is fixedly connected with the other ends of the multiple moving blocks. According to the anti-choking milk bottle, through the simple structure, the anti-choking milk bottle has the anti-choking and anti-milk-leakage functions of the milk bottle at the same time, and operation is easy.

The utility model relates to food additive production technical field, and disclose a kind of food additive mixing device, including mixing device ontology, the mixing device ontology top is provided with mixing mechanism, the mixing mechanism bottom is provided with discharging mechanism, the mixing mechanism includes mixing subassembly and ration component, the mixing subassembly is set to mixing device ontology top, the ration component is set to mixing subassembly top, when using, by the mixing mechanism being set, when needing to carry out mixing work in the process of food additive production, under the action of threaded rod and mounting frame, sealing cap can be driven to move to the top of mixing box, not only can play the sealing effect, simultaneously convenient to the cleaning of mixing box inside after mixing is completed, by the second cylinder and promote baffle sliding, the dosing amount of each additive can be accurately controlled, and two groups of storage tank are symmetrically distributed, can conveniently simultaneously quantitatively put two different additives.

The utility model discloses a conveying mechanism of an automatic paper diaper packaging machine, and relates to the technical field of conveying of the automatic paper diaper packaging machine, the conveying mechanism comprises an automatic paper diaper packaging machine body, and the top of a first connecting seat is fixedly provided with two protective baffles which are symmetrically distributed; two supporting plates which are vertically distributed are fixedly installed at the inner end of the protective baffle, rotating grooves are fixedly formed in the supporting plates, rotating shafts matched with the rotating grooves are rotatably connected to the inner walls of the rotating grooves, a current limiting baffle is fixedly installed between the rotating shafts, and servo motors are fixedly installed at the top ends of the rotating shafts. According to the conveying mechanism of the automatic paper diaper packaging machine, a rotating shaft is fixed through a supporting plate, a servo motor drives the rotating shaft to rotate, the rotating shaft drives a flow limiting baffle to control opening and closing, congestion is prevented, a driving motor drives a transmission tooth roller to rotate, and the transmission tooth roller drives a conveying belt to roll, so that paper diapers are conveniently driven to be fed and discharged; and the packaging and conveying efficiency is improved conveniently.

The utility model relates to the technical field of experiment table filling devices, in particular to an experiment table filling device for detecting an oil soluble demulsifier, which comprises a filling tank, a plurality of vertically arranged transparent filling pipes are fixedly communicated with the bottom of the filling tank, and valves are fixedly mounted at the bottoms of the plurality of transparent filling pipes. The filling tank is provided with a plurality of flow control mechanisms which are matched with the transparent filling pipes correspondingly and can ascend and descend, each flow control mechanism comprises a sealing circular plate which can be in sealing sliding fit with the inner walls of the transparent filling pipes and can ascend and descend, and a liquid passing hole is formed in each sealing circular plate. According to the liquid filling device, multiple strands of filling solutions can be prepared at a time before detection, it is avoided that in the detection process, adjustment is conducted many times, so that observation of detection test reaction changes is affected, filling can be conveniently conducted in time, and the detection efficiency is further improved.

The utility model relates to the technical field of rubber cup mat production, and discloses a rubber cup mat processing die which comprises a base, a lower die is arranged at the top end of the base, and an upper die is arranged at the top end of the lower die. According to the machining mold for the rubber cup mat, the electric push rod, the mold cavity, the connecting push rod, the spring, the damper and the push plate are arranged, the electric push rod drives the mounting plate to ascend and descend, the connecting push rod can drive the push plate to ascend and descend in the mold cavity, and the depth in the mold cavity can be conveniently controlled by adjusting the position of the push plate; when the rubber cup mat is formed, the electric push rod is started again, the electric push rod drives the mounting plate to ascend, the push plate ejects the formed rubber cup mat out, the spring can prevent the mounting plate from descending quickly when the electric push rod is damaged, and the problems that the rubber cup mat is inconvenient to demould, the production efficiency is high and the like are solved. And the depth of the mold cavity is inconvenient to adjust according to the requirements of a user, and the flexibility is poor.

The utility model relates to the field of kilometer deep well wall concrete pouring, in particular to a kilometer deep well pouring system which comprises at least one pouring set, and each pouring set comprises an ash storage barrel, a flow control device, an ash sliding pipe, a speed reduction device, a secondary stirring funnel and an ash distributor. The ash storage barrel, the flow control device, the ash sliding pipe, the speed reducer, the secondary stirring funnel and the ash separator are sequentially arranged from top to bottom and are communicated with one another. The utility model has the beneficial effects that the concrete is conveyed by adopting the pipeline, and meanwhile, the main and auxiliary lifting winches can be used for deslagging and discharging muck in a well, so that the construction process is optimized, the operation cost is reduced, the construction efficiency is improved, and the investment and management cost of equipment are reduced. And the concrete flow and flow velocity are controlled through the flow control device and the speed reducer, so that the construction is smoother.

The utility model discloses an in-cabin heat dissipation device suitable for a hydrogen fuel cell stack engine system. The in-cabin heat dissipation device comprises a shell, an environmental chamber is arranged in the shell, a heat exchange air duct is arranged above the environmental chamber, an outlet of the heat exchange air duct faces downwards, and the heat exchange air duct is provided with a plurality of fans which blow air downwards; a hydrogen fuel cell stack engine system and an ethylene glycol cooling system connected with the hydrogen fuel cell stack engine system are arranged in the environmental chamber, and the ethylene glycol cooling system comprises an air-cooled condenser; and two ports of the air-cooled condenser are respectively connected with an ethylene glycol liquid outlet and an ethylene glycol liquid inlet of the hydrogen fuel cell stack engine system through an ethylene glycol outlet pipe and an ethylene glycol inlet pipe. According to the device disclosed by the utility model, the heat dissipation effect of a hydrogen fuel cell stack engine system can be greatly improved by utilizing the cooperation of the environmental cabin and the ethylene glycol cooling system, heat dissipation in all thermal power cabins can be realized, the temperature, pressure and flow of an ethylene glycol solution can be controlled, and the application prospect is good.

The utility model relates to the technical field of medical equipment for children, in particular to a portable medicine feeding device which comprises a top plate, a connecting column is fixedly connected to the lower portion of the top plate, and a sealing piece is fixedly connected to the bottom end of the connecting column. The outer wall of the sealing piece is sleeved with a shell. The metering assembly comprises a square groove formed in the outer wall of the shell, an observation piece is installed in the square groove, a dial gauge is arranged on the side wall of the square groove, a connecting piece is fixedly connected to the bottom end of the top plate, and a pointer is fixedly connected to the side wall of the connecting piece. According to the utility model, the metering assembly is arranged, so that the state of liquid medicine and the output amount of the liquid medicine can be more intuitively observed in the use process of the device, and a user can more accurately control the output amount of the liquid medicine, so that a child patient does not take in the liquid medicine too much or too little, and the treatment effect is ensured.

The utility model relates to the technical field of sewage treatment, in particular to an integrated sewage lifting pump which comprises a box body, a sewage inlet pipeline is arranged on one side of the box body, a first filter screen, a second filter screen and an inclined flow plate are arranged in the box body, the first filter screen is arranged on the upper middle portion of the box body, and the second filter screen is arranged on the lower middle portion of the box body. The inclined flow plate is arranged at the bottom of the box body; the water pumping pipeline is partially arranged in the box body and comprises a first water pumping pipeline, a second water pumping pipeline and a main water pumping pipeline, and the first water pumping pipeline and the second water pumping pipeline are arranged in an unclosed space formed by the water separation baffle and the side, away from the sewage inlet pipeline, of the box body; the pump body is connected with the box body through the main water pumping pipeline, and ball valves are arranged at the connecting positions of the main water pumping pipeline and the first water pumping pipeline and the second water pumping pipeline. According to the utility model, the sewage filtering device is arranged in the horizontal direction relative to the box body and has an angle, so that the sewage filtering effect is optimized.

The utility model discloses a kind of glue filling machine of facilitating colloid individual storage mixing, including storage mixing main part, first support seat, fixed support base, second support seat, rotating gear disc, first motor, second motor and second support seat, the first support seat and the second support seat are fixedly installed on the fixed support base, the rotating gear disc symmetrical rotation meshing connection is arranged in the upper end inside of the first support seat.This utility model two colloid independent storage anti-deterioration system independent sealing storage, by separately arranged first storage barrel and second storage barrel respectively store A / B colloid, sealing cover is combined bolted, completely isolate two-component colloid contact, solve the problem of performance decline caused by mixed glue solution due to chemical reaction, dynamic anti-solidification design, first motor drive meshing rotating gear disc, drive glue storage barrel periodic swing, effectively prevent colloid standing sedimentation or local solidification, significantly extend storage stability.

A heat pump system for a vehicle includes: an air conditioning unit including a compressor, a first heat exchanger, a second heat exchanger, a first expansion valve, and a third heat exchanger connected through a refrigerant line to circulate refrigerant through the refrigerant line; and a cooler connected to the refrigerant line through a first connection line and adjusting a temperature of the coolant by heat exchanging the refrigerant supplied from the air conditioning unit with the coolant, in which the air conditioning unit further includes: a first valve provided in the refrigerant line between the first heat exchanger and the second heat exchanger; a second valve provided in the refrigerant line between the third heat exchanger and the compressor; a second expansion valve provided in the first connection line; the first end of the second connecting pipeline is connected to the refrigerant pipeline between the first heat exchanger and the second heat exchanger, and the second end of the second connecting pipeline is connected to the refrigerant pipeline between the second heat exchanger and the third heat exchanger; and a third expansion valve.

The utility model relates to the technical field of microcomputer type ferromagnetic resonance eliminating devices, in particular to a microcomputer type ferromagnetic resonance eliminating device which comprises a shell, a supporting seat, a circuit board, a first positioning groove, a first positioning block, a second positioning groove, a second positioning block, a synchronous moving mechanism and a clamping mechanism. The circuit board is arranged on one side of the supporting seat, the two first positioning grooves are symmetrically formed in the supporting seat, a first positioning block is arranged in each first positioning groove in a sliding mode, the two second positioning grooves are symmetrically formed in the supporting seat, and a second positioning block is arranged in each second positioning groove in a sliding mode. According to the technical scheme, the problem that in the prior art, in the using process of a microcomputer type ferromagnetic resonance eliminating device, the circuit board mounting and dismounting efficiency is low is solved.

The invention provides an energy storage cabinet battery thermal runaway gas diffusion and explosion simulation test device and method.The device comprises an energy storage cabinet model, a gas distribution system, an ignition system, an explosion venting device, a data acquisition system and a control system.The energy storage cabinet model comprises a cabinet body model, a battery module model and an electrical module model; the battery module model is provided with a gas discharge port, and the cabinet body model is provided with an explosion venting port; the gas distribution system comprises a gas storage bottle, a premixer, a first pipeline and a second pipeline, the gas storage bottle is connected with the premixer through the first pipeline, and the premixer is connected with the gas exhaust port through the second pipeline. The explosion venting device comprises a plurality of explosion venting panels with adjustable parameters, and the explosion venting panels are connected with the explosion venting opening. The simulation of the diffusion behavior of the thermal runaway gas in the energy storage cabinet under the variable, controllable and adjustable conditions of parameters such as the thermal runaway gas proportion, the spraying position, the spraying pressure and the flow can be realized, and the simulation of explosion and explosion venting in a non-uniform concentration environment formed by gas diffusion can be realized.

The invention provides a high-conductivity acetylene carbon black aggregation state structure regulation and control method which is characterized in that a gas-solid mixture of acetylene and carbon black seed crystals is used as a raw material, and the method comprises the following steps: step 1, heating the raw material to a preset temperature to pre-activate acetylene; 2, dividing an acetylene cracking reaction area into a nucleation area, a cross-linking area and a shaping area, setting different temperatures in the three areas, and enabling acetylene to sequentially flow through the nucleation area, the cross-linking area and the shaping area for reaction to generate acetylene carbon black; and 3, quantitatively conveying a cooling medium to cool the acetylene carbon black, so that the cooling rate of the acetylene carbon black is stable. The invention discloses a reaction tower for preparing a high-conductivity acetylene carbon black aggregation structure. The reaction tower comprises a mixing section, a preheating section, a nucleation section, a crosslinking section, a shaping section and a cooling section from top to bottom, a heat insulation layer is arranged between every two adjacent sections of the nucleating section, the cross-linking section, the shaping section and the cooling section.

This utility model relates to the field of machining technology and discloses an improved expansion rolling wheel, including a wheel body. The rolling surface of the wheel body has a trapezoidal groove in the middle, and the inner wall of the trapezoidal groove is symmetrically provided with isosceles surfaces. The cross-section of the trapezoidal groove is an isosceles trapezoid. This utility model effectively solves the problem of incomplete expansion caused by traditional flat rolling wheels by setting a trapezoidal groove in the middle of the rolling surface of the wheel body. The groove has an upper opening of 20mm, a lower opening of 13mm, and a depth of 1.5mm. It promotes the uniform expansion of metal material to the outer diameter, avoids the outer diameter depression or incomplete forming caused by traditional flat wheels, and significantly improves the outer diameter forming quality. It has the advantages of simple structure, low modification cost, and strong adaptability. It makes metal flow more controllable, eliminates surface wrinkles, cracks and other defects caused by material accumulation or missing material during the expansion process, and improves the surface smoothness of the product.