86results about How to "Precise flow control" patented technology

The invention relates to the technical field of sewage treatment, in particular to a CCRO high-efficiency water treatment system and a working method thereof. Comprising a sewage tank, a water supply pump, a scale inhibitor injection module, a sodium hydrogen sulfite injection module, a bactericide injection module, a security filter, a static mixer, a high-pressure pump, a reverse osmosis membrane assembly, a reaction tank, a circulating pump, a cleaning pump, a water production tank and a concentration device which are connected through pipelines, the sewage tank, the water supply pump, the security filter, the static mixer, the high-pressure pump, the reverse osmosis membrane assembly, the reaction tank, the circulating pump, the cleaning pump and the water production tank are all provided with an outlet and an inlet, and the reverse osmosis membrane assembly is also provided with a drain outlet; the sewage pool, the water supply pump, the static mixer, the security filter, the high-pressure pump, the reverse osmosis membrane assembly and the water producing pool are sequentially connected through the outlet and the inlet through pipelines; the problem that an existing CCRO water treatment system is insufficient in automation degree can be effectively solved, the sewage treatment efficiency and quality are improved, the operation and maintenance cost is reduced, and wide application prospects are achieved.

The utility model discloses an automatic vibration feeding and conveying system for a lithium iron phosphate production line, which comprises a discharge storage device and a conveying mechanism, a flow-aiding stirring device is arranged at the top of the discharge storage device, and a flow-aiding stirring device is arranged at the bottom of the discharge storage device. A first weighing sensor used for weighing materials is arranged in the discharging storage device, and a plurality of conveying mechanisms used for conveying the materials are arranged at the top of the discharging storage device. The conveying mechanism comprises a vibrating feeder, a first switch valve, an adjusting valve, a rotary valve, a second switch valve, a powder storage device, a second weighing sensor, a first ventilation device and a stirring device, the second switch valve is arranged at the bottom of the powder storage device, and the material flow can be accurately controlled; according to the vibrating feeder, it is ensured that the materials are conveyed at the stable and uniform speed, the risks of material accumulation and blockage are reduced, and damage to the materials is small in the conveying process of the vibrating feeder.

The present invention relates to the technical field of water distributors, and in particular to an anti-blocking water distributor for oil field development. The problem that impurities in the flowing liquid may block the water distributor is addressed. An anti-blocking water distributor for oil field development comprises: a shell, which is provided with a plurality of drainage ports; an upper joint, which is threadedly mounted on the shell; a first sleeve, which is slidably arranged in the shell and is provided with a plurality of liquid guide holes, and the liquid guide holes are arranged at an angle; a second sleeve, which is slidably arranged in the shell, and the two ends of the second sleeve are respectively in contact with the first sleeve and the upper joint; an adjustment mechanism, which is arranged in the shell and is used to adjust the opening size of the liquid guide holes on the first sleeve by pressure. The present invention guides the liquid to rotate through the liquid guide holes, reduces the phenomenon that impurities in the liquid adhere to the vicinity of the drainage port for a long time and cause blockage, thereby ensuring that the device continues to work effectively.

The present invention relates to the technical field of condensers, and discloses an integrated temperature control optimized condenser system, comprising an outer tube, a bracket arranged at the bottom of the outer tube, covers arranged at both ends of the outer side of the outer tube, a refrigerant joint arranged at the outer side of the outer tube, a cooling medium joint arranged at the outer side of one end cover, a mounting plate arranged inside the outer tube, a heat exchange tube arranged in the mounting plate, and also comprises an adjustment component arranged on the surface of the mounting plate, and a control component arranged on the surface of the adjustment component. The integrated temperature control optimized condenser system, by setting the adjustment component, controls the movement of a corresponding number of adjustment strips when the temperature needs to be adjusted, so that a certain proportion of the connecting holes are docked with the docking port, and only needs to replace this part of the heat exchange tubes during maintenance, thereby extending the service life of the entire equipment, and thus ensuring the flow rate of the cooling medium in the heat exchange tubes, avoiding the accumulation of impurities in the cooling medium, and ensuring the heat exchange efficiency of the heat exchange tubes.

The invention relates to the technical field of recycling of cutting fluid in the silicon wafer cutting industry, in particular to a large circulation process method based on back-end automatic allocation, the amount of pure water used in the process allocation method is approximately equal to the amount of water lost by filter pressing, and the loss of pure water can be greatly reduced; and when the COD value is kept unchanged, the addition amount of the cutting fluid is far smaller than the filter pressing loss amount, so that the waste of the cutting fluid is reduced, and the finished product water is supplied to the slicing end more quickly.

The utility model relates to the technical field of high-temperature heat storage and exchange systems, and discloses a molten salt spherical tank heat storage and exchange gas pressure conveying device which comprises a low-temperature molten salt spherical tank and a high-temperature molten salt spherical tank, and gas supply pipeline systems and electric heating boilers are arranged at the tops of the low-temperature molten salt spherical tank and the high-temperature molten salt spherical tank. The electric boiler is arranged on the right side of the low-temperature molten salt ball valve and used for improving the heat storage efficiency at the off-peak electricity price. Continuous or intermittent fused salt conveying is achieved through gas pressure balance and a pressure regulating valve set, low-temperature fused salt liquid obtained after fused salt in the high-temperature fused salt spherical tank is subjected to heat exchange through a gas pressure conveying fused salt heat exchanger is conveyed to the low-temperature fused salt spherical tank to be stored, and the fused salt liquid in the low-temperature fused salt spherical tank is conveyed to the fused salt heater through gas pressure to be heated and then conveyed to the high-temperature fused salt spherical tank. The effects of avoiding the risk of sealing leakage caused by the high temperature of the molten salt pump, being simple in structure, stable in operation, suitable for large and medium-sized molten salt heat storage and exchange systems, capable of accurately controlling the flow, stable in top pressure and rapid in response are achieved.

The utility model relates to the technical field of vehicle-mounted electric control cover plate die-casting, and discloses a new energy vehicle-mounted electric control cover plate die-casting device which comprises a die-casting device body, a baffle is fixedly connected to the left side of the top of the die-casting device body, a die-casting mechanism is arranged at the top of the die-casting device body, and a base is fixedly connected to the bottom of the die-casting device body. A collecting mechanism is arranged at the bottom of the die-casting device body, the die-casting mechanism comprises a die-casting assembly and a stirring assembly, the die-casting assembly is arranged at the top of the die-casting device body, and during use, through the arranged die-casting mechanism, when a vehicle-mounted electric control cover plate needs to be subjected to die-casting work, a first servo motor drives a first threaded rod to rotate; the hydraulic cylinder pushes the push plate, raw materials in the conveying pipe stably and accurately enter the first die, the right side of the second die makes close contact with the left side of the first die, and the sealing performance of the dies in the die casting process is guaranteed.

The utility model relates to the technical field of water purifier descaling, and discloses an efficient descaling water purifier which comprises a water purifier shell, filter bottles, a threaded cover, a threaded groove and filter elements, the inner wall of the water purifier shell is fixedly connected with five groups of filter bottles, the tops of the five groups of filter bottles penetrate through the top of the water purifier shell, and the inner walls of the five groups of filter bottles are provided with the filter elements. Threaded grooves are formed in the outer sides of the tops of the five sets of filter bottles, threaded covers are in threaded connection with the outer sides of the threaded grooves, when a traditional water purifier needs to be used for descaling, a user often needs to search and carry a descaling agent by himself, time and labor are consumed, and the descaling effect is possibly affected due to the fact that the variety or the dosage of the descaling agent is improper. And according to the design, the storage structure is integrated at the top of the threaded cover and specially used for storing the descaling agent, so that the descaling agent can be taken at any time, and the preparation work before descaling is greatly simplified.

A sealed tank comprises a tank body and a tank cover arranged on an opening of the tank body, a first sealing element is arranged between the tank body and the tank cover, at least one side or one corner of the opening edge of the tank body is formed with an inclined portion which is inclined downward from top to bottom, the tank cover is formed with an inclined area corresponding to the inclined portion, a slanting downward discharge port which communicates with the inside of the tank body is arranged in the inclined area, the tank cover is provided with a sealing cover which can open and close the discharge port, and a second sealing element is arranged between the sealing cover and the discharge port. By arranging the inclined portion on the opening edge of the tank body, arranging the corresponding inclined area and the slanting downward discharge port on the tank cover, and arranging the sealing cover with the second sealing element, the discharge port has a flow guide angle due to the inclined design of the inclined portion and the inclined area, so that the pouring flow can be accurately controlled, the spilling and leakage can be reduced, the container inclination angle can be reduced to improve the operation convenience, and the discharge port can be opened and closed separately by the sealing cover, so that the tank cover is not opened frequently, the sealed environment in the tank is maintained, and the diversified use requirements are met.

The utility model belongs to the field of coating production equipment, and particularly relates to a water-based coating performance improving tool which comprises a stirring barrel, and a stirring assembly is arranged in the stirring barrel. The stirring assembly comprises a protection box. According to the utility model, the stirring assembly is arranged, and the turbine blade, the spiral blade and the scraping plate work cooperatively. The turbine blades rotate at the top of the stirring barrel, so that agglomerates above the coating can be effectively scattered, and primary mixing of components is promoted; the spiral blade is arranged in the middle of the transmission rod II, rotates along with the transmission rod, and can drive the coating to circularly flow up and down in the stirring barrel, so that various components are fully mixed in the vertical direction; the scraping plate at the bottom is in sliding fit with the inner wall of the bottom of the stirring barrel, so that pigments, fillers and the like attached to the bottom of the stirring barrel can be cleaned in time and prevented from being accumulated, and uniform mixing of the paint is further ensured, so that the appearance color and physical properties such as hardness and wear resistance of a coating are improved, and the product quality is improved.

The utility model discloses a kind of toilet excrement field returning equipment, it is related to environmental protection and agricultural resource utilization technical field, including storage sewage bin, stirring device, conveying pipeline and distributor, the top end lateral wall of storage sewage bin is equipped with feed inlet, the feed inlet is closed by sealing cover, the inside of storage sewage bin is provided with stirring device, the stirring device includes driving motor, transmission shaft and stirring vane, the driving motor is fixed at the top outside of storage sewage bin, the output shaft of driving motor is connected by shaft coupling with one end of transmission shaft, the other end is penetrated the top of storage sewage bin and extends to storage sewage bin inside, the outer wall of transmission shaft is welded with multiple groups of stirring vane, each group of stirring vane is distributed in spiral shape, the bottom of storage sewage bin is provided with discharge port.The utility model discloses a kind of toilet excrement field returning equipment, by storage sewage bin, the centralized collection of excrement is realized, replace traditional dispersed manual collection mode, reduce labor intensity and improve efficiency.

The application is suitable for the technical field of valve control, and provides a swing valve with controllable flow, which comprises a valve body, a power generation assembly, a swing shaft, an orifice plate flowmeter, a valve clack and a storage battery, an annular insert block is installed in the valve body, a rotating support is fixedly connected to the lower part of the annular insert block, the rotating support is hingedly connected with the swing shaft through a rotating arm, the swing shaft is connected with a first electric rotary cylinder, and the swing shaft is detachably installed with the valve clack. The valve clack comprises a middle body, a left clack, a right clack, a second electric rotary cylinder and a stud, the bottom of the middle body is provided with a wedge-shaped buckle, an electric telescopic cylinder is installed in the valve body, and the telescopic buckle of the electric telescopic cylinder can be matched with the wedge-shaped buckle; the left clack and the right clack are rotated under the driving of the respective second electric rotary cylinder, and the stud clamps or loosens the left clack and the right clack when rotating. The application can switch the flow by controlling the number and angle of the opening of each part, the flow switching has five modes, and the flow of liquid medium can be accurately controlled.

The invention discloses a steel structure rust removal device for a construction site. The steel structure rust removal device comprises a walking plate trailer, a stirring box, a water storage box, a material storage box, a high-pressure pump, a liquid conveying pipe and an air compressor. The stirring box is fixed on the top surface of the walking plate trailer; a liquid outlet is formed in the bottom of one side wall of the stirring box; a water outlet communicated with the inner cavity of the stirring box is formed in the bottom wall of the water storage box; grinding materials are contained in the storage box, and a discharging gate is hinged to the bottom end of the storage box so that the grinding materials can be put into the stirring box and stirred and mixed with water to form grinding liquid; the high-pressure pump is fixed on the outer wall of the stirring box; an inlet of the high-pressure pump communicates with the liquid outlet; one end of the liquid conveying pipe is detachably connected with an outlet of the high-pressure pump, and a high-pressure nozzle is fixed at the other end; the air compressor is fixed to the top face of the walking plate trailer to provide high-pressure air, and an air outlet of the air compressor communicates with the liquid conveying pipe through an air pipe. Water and grinding materials are stirred to form mixed grinding liquid, the mixed grinding liquid is sprayed to the surface of the steel structure through high pressure for rust removal operation, and secondary pollution to the environment is avoided.

The utility model discloses a natural gas pipeline distribution realization device, which relates to the field of natural gas pipelines and comprises a main conveying pipe, a three-way connecting pipe arranged at one end of the main conveying pipe, a noise reduction mechanism arranged at one end of the three-way connecting pipe, and a first distribution mechanism arranged on one side of one end of the noise reduction mechanism. A second distribution mechanism is arranged on the other side of one end of the noise reduction mechanism, and the first distribution mechanism and the second distribution mechanism are the same in structure. The device is reasonable and reliable in structure, distribution and control of natural gas can be effectively achieved, noise generated by gas flowing is reduced through the noise reduction mechanism, the environmental friendliness of the device is improved, the first distributing and conveying mechanism and the second distributing and conveying mechanism are provided with valve assemblies, the natural gas flow can be accurately controlled, and safety and stability of system operation are guaranteed; the energy distribution efficiency is optimized, the safety and reliability of pipeline transportation are enhanced, and a powerful guarantee is provided for stable supply of natural gas.

The invention relates to the technical field of pancake machines, and provides a sauce fluid material adding device for a pancake machine, which comprises a fixed plate, two peristaltic pumps are symmetrically and fixedly mounted on one side surface of the fixed plate, two clamping blocks are symmetrically mounted on each peristaltic pump, peristaltic hoses are clamped in the clamping blocks, and the peristaltic hoses are fixedly connected with the fixed plate. Two through holes are formed in the fixing plate and located below the two peristaltic pumps in a penetrating mode. The peristaltic pump extrudes the peristaltic hose, so that the sauce is conveyed through the butt joint pipe and the connecting pipe and is finally discharged through the discharging pipe to be added, the effect of automatically adding the sauce is achieved, the conditions that the adding labor amount of workers is high and the efficiency is low are avoided, the flow of liquid can be accurately controlled, and the practicability is high. Meanwhile, the peristaltic pump conveys the sauce by extruding the peristaltic hose, so that the risk that the sauce is polluted is conveniently prevented, the food safety of pancakes is guaranteed, and the working efficiency, effect and convenience of pancake making are effectively improved.

The utility model discloses a kind of dry-process acetylene carbide slag pneumatic conveying systems, including carbide slag storage bin, sludge conveyor, carbide slag buffer tank, pneumatic conveying pipeline and reaction kettle, the lower outlet of the carbide slag storage bin is connected with electric plug-in valve one, electric plug-in valve lower portion is connected with feeder, the lower portion of the feeder is connected with sludge conveyor, the end of the sludge conveyor is connected with sludge drop pipe, the sludge drop pipe outlet is connected with electric plug-in valve two, the lower portion of the electric plug-in valve two is connected with carbide slag buffer tank, the lower outlet of the carbide slag buffer tank is connected with control valve, the lower portion of the control valve is connected with the pneumatic conveying pipeline, the lower portion of the control valve is also connected with nitrogen pipeline, and reaction kettle is connected at the end of pneumatic conveying pipeline.The utility model can stably, efficiently convey original carbide slag to subsequent deep processing reaction kettle, reduce enterprise production cost, improve on-site cleanliness.

The utility model discloses a dust removal device of a mining unloading station, which relates to the technical field of mining equipment and comprises an unloading station body and a dust removal box, one side of the unloading station body is provided with the dust removal box, the top end of the dust removal box is fixedly provided with a fan box, one side of the dust removal box is connected with a dust-gas pipeline in a circulating manner, and the dust-gas pipeline is provided with a fan. And an air volume adjusting valve is fixedly mounted in the middle of the dust-gas pipeline. The fan box of the dust removal device of the mining unloading station extracts dust-containing gas generated by the unloading station body through the dust-gas pipeline and the dust hood, the air volume adjusting valve on the dust-gas pipeline can adjust the air volume, the dust-containing gas enters the dust removal box to be treated, dust is discharged from the bottom dust discharge port, and purified gas is discharged from the purified gas outlet. The water pump above the water tank conveys water to the water supply pipe annularly distributed on the outer side of the dust suction hood through the connecting water pipe and the water supply pipe, then the water is sprayed out through the multiple mist spray heads on the inner side to spray and reduce dust in the dust suction hood, the fixing frame is used for stabilizing the water supply pipe, efficient dust removal is achieved, and the unloading station environment is improved.

The utility model discloses a kind of chromatography devices of flow rate and time controllable, belong to medical instrument technical field, including liquid storage bottle, the upper end of liquid storage bottle is provided with inlet, the lower end of liquid storage bottle is provided with pipeline one, the lower end of pipeline one is provided with microfluid pump, the lower end of microfluid pump is provided with chromatography column, the lower end of chromatography column is provided with pipeline two, the lower end of pipeline two is provided with detector, the utility model is by being provided with the structure that liquid flow rate and reaction time can be controlled, the accurate control of liquid flow is realized, controller can automatically adjust the speed of microfluid pump and electromagnetic valve start-stop time according to preset experimental parameter, ensure that liquid flows at the speed set, and complete reaction within predetermined time, this design improves the accuracy and repeatability of experiment, especially suitable for the chromatography experiment that needs accurate control flow rate and time, can effectively improve experimental efficiency and the reliability of data.

The water-saving type fire sprinkler comprises a transfer pipe and an assembly part, an assembly hole is formed in the middle of the transfer pipe perpendicular to the axis direction; the two ends of the transfer pipe are connected to the nozzle and the water supply pipe correspondingly. The assembly part is slidably arranged in the assembly hole and attached to the side wall of the assembly hole. A plurality of water-saving valves with different hole diameters are further arranged on the assembly part, and when the assembly part slides along the assembly hole, the different water-saving valves are correspondingly communicated with the pipe openings of the transfer pipe respectively. The problems that a traditional fire sprinkler is low in adjusting efficiency and insufficient in flexibility are solved.

The application relates to a multi-stage combustor and belongs to the technical field of combustors.The multi-stage combustor comprises a multi-stage combustor body, a central combustion zone, a peripheral combustion zone and a cross-section adjustable air supply system; the multi-stage combustor body has an inner-outer nested structure; the central combustion zone comprises an array type combustor arranged in the central region of the multi-stage combustor body; the peripheral combustion zone comprises an annular hole combustor coaxially arranged outside the array type combustor; and the cross-section adjustable air supply system comprises an air channel adjusting mechanism arranged outside the array type combustor; the application provides a multi-stage combustor, air flow and flow speed are dynamically regulated through the air channel adjusting mechanism, and combustion stability is improved; independent adjusting devices are arranged at the central and peripheral fuel outlets, fuel flow is finely controlled, and flame form is optimized; partition combustion reduces NOx generation, carbon smoke particles are completely oxidized in the peripheral zone, low emission is realized, modular design facilitates installation and maintenance, and operation is simple, flexible and convenient.

This invention discloses a water quality monitoring stratified sampling device, comprising a sampling bucket, a support rod at the top of the sampling bucket, an air rod inserted through the middle of the support rod, the air rod penetrating the sampling bucket, a piston plate at the bottom of the air rod, an exhaust channel on one side of the piston plate, and an opening and closing part within the exhaust channel; a locking rod on one side of the support rod, the outer end of the locking rod locking into a lock hole on the top side of the sampling bucket, a rope on the outer side of the locking rod, and a float at the other end of the rope; a main water inlet at the center of the bottom of the sampling bucket, with a valve on the main water inlet; several water outlets on one side of the sampling bucket, with water outlet pipes connected to the water outlets; several rotating parts inside the sampling bucket, dividing the interior of the sampling bucket into several sampling chambers, with an auxiliary drive part at one end of each rotating part, which is installed on the outer wall of the sampling bucket, to achieve independent segmentation of water samples at different depths, effectively avoiding cross-contamination between water samples and improving the accuracy of monitoring data.

The closed fluorine-lined sampling valve comprises a valve body provided with a sample inlet and a sample outlet, a sampling opening communicated with an inner cavity of the valve body is formed in the bottom end of the valve body, a valve seat is arranged in the sampling opening, and an upper valve cover screwed with a valve rod is arranged at the top end of the valve body. One end of the valve rod stretches into the valve body and gets close to or deviates from the sampling opening through spiral movement so as to control on-off of the sampling opening, the other end of the valve rod stretches out of the upper valve cover and is connected with the six-clack hand wheel so as to drive the valve rod to rotate, and fluorine lining layers are arranged on the inner walls of the valve body, the upper valve cover and the valve seat and the outer wall of the valve rod. The bottom end of the valve body is further provided with a sealed sampling bottle with a sealed rubber seal at a bottle opening, the valve seat is communicated with a sampling needle, the sampling needle penetrates through the sealed rubber seal and extends into the sealed sampling bottle, the valve seat is provided with an exhaust port, and an exhaust needle communicated with the exhaust port and the sealed sampling bottle penetrates through the sealed rubber seal. The sampling valve has the advantages that the overall leakproofness and corrosion resistance of the sampling valve are improved, the sampling efficiency and quality of a sampling medium are guaranteed, and meanwhile the sampling cost is reduced.

This utility model relates to the field of feeding equipment technology, specifically a device for rapid feeding of glass fiber products. It includes a storage bin with legs fixedly mounted on its surface. A rotary motor, a uniform feeding rod, an electric telescopic rod, a spring, and an anti-blocking scraper are incorporated. The rotary motor drives the uniform feeding rod to rotate, stirring and dispersing the glass fiber in the storage bin, ensuring uniform and loose material distribution for smooth feeding. The electric telescopic rod precisely adjusts the position of the anti-blocking scraper according to the condition of the inner wall of the discharge hopper, ensuring close contact with the inner wall. Combined with the elasticity of the spring, the anti-blocking scraper adaptively scrapes away residual material from the inner wall of the discharge hopper, preventing blockage. These structures work together to form a work chain from material pretreatment to anti-blockage, effectively avoiding downtime caused by material agglomeration and blockage, and ensuring efficient and continuous feeding of glass fiber products.

The utility model relates to the technical field of pipeline valves, in particular to a lubricating oil pipeline valve with a bypass function, which comprises a valve body, the inner wall of the valve body close to the front is fixedly connected with the outer wall of a filter part, the inner wall of the valve body is fixedly connected with the outer wall of an oil path channel part close to one side, and the valve is in a completely closed state in a default state. The control rod is driven to rotate by rotating the control ring, the first blocking column cannot rotate to do vertical linear motion under the action of the sliding block, the first blocking column, the second blocking column and the third blocking column all move upwards, a gap is formed between the second blocking column and the main channel after the first blocking column, the second blocking column and the third blocking column move by a certain distance, and lubricating oil flows out through the main channel. After the control ring continues to be rotated, the third blocking column closes the main channel, at the moment, a gap is formed between the first blocking column and the bypass channel, lubricating oil enters the bypass channel through the flow dividing channel, when the main channel is blocked, oil can be guided to the bypass channel by rotating the control ring, and therefore the system is protected against damage.

The utility model discloses a liquid mixing device, relates to the technical field of medicine processing devices, and solves the problems that the mixing effect is poor, the activity of added components is damaged due to mechanical stirring and the like. Comprising a mixing pipeline, the mixing pipeline conveys at least two kinds of liquid, the mixing pipeline is connected with a mixer, the mixer comprises an outer pipe and a central shaft, the central shaft is arranged in the outer pipe, and the outer pipe is connected with the mixing pipeline to form communication; a plurality of stirring and mixing blocks are fixedly arranged on the central shaft in the axial direction of the central shaft, the stirring and mixing blocks protrude outwards in the radial direction of the central shaft, a preset distance is formed between every two adjacent stirring and mixing blocks, and a preset included angle is formed in the mounting direction of every two adjacent stirring and mixing blocks. By means of the uniform mixer, especially the stirring and mixing blocks which are arranged in a staggered mode, a strong turbulent flow effect can be generated when liquid flows through the uniform mixer, the liquid can be promoted to form complex vortexes and folds, collision and diffusion among liquid molecules are greatly improved, and therefore the mixing efficiency is improved.

The utility model discloses a micro-nano bubble generator capable of controlling the temperature of micro-nano bubble water, which comprises a micro-nano bubble generator main body, the input end of the micro-nano bubble generator main body is provided with an input pipe fitting I, and the output end of the micro-nano bubble generator main body is connected with a temperature control assembly through an input pipe fitting II; the temperature control assembly comprises a mounting support, a cooling fan and a cooler, the cooler is mounted at the bottom of the mounting support, the cooling fan is fixed to the top of the mounting support, and a second pipeline and a first pipeline are fixed to one side of the cooler. According to the micro-nano bubble generator, the generated micro-nano bubble generator body can be effectively cooled through cooling liquid, the temperature of the cooling liquid is monitored in real time through the temperature sensor, backflow and re-cooling of the cooling liquid which does not reach the standard are achieved in cooperation with the first three-way electromagnetic valve, the second three-way electromagnetic valve and the backflow pipe, and it is ensured that the temperature of the output cooling liquid is within the set range; and the accurate requirements of different application scenes on the temperature are met.

The utility model relates to the technical field of distillation gas condensation, in particular to an efficient condensing device for a perfluoropolyether distillation process. Comprising a condensation box body, a gas inlet pipe is installed at one end of the condensation box body, a liquid outlet pipe is installed at the other end of the condensation box body, and a gas return assembly used for recycling uncondensed gas is installed on the liquid outlet pipe; due to the arrangement of the gas return assembly, when distillation steam is not completely condensed in the condensation assembly, uncondensed gas can flow back to the gas inlet pipe from the liquid outlet pipe through the gas return pipe, and recycling of the uncondensed gas is achieved. Raw material loss caused by direct emission of uncondensed gas is avoided, and the production cost is effectively reduced; meanwhile, pollution possibly caused by emission of uncondensed gas to the environment is reduced, and the environmental protection requirement is met.

The embodiment of the present application provides a hydrogen flame chromatograph valve island type gas path constant temperature control device and a control method, and belongs to the technical field of hydrogen flame chromatographs. The hydrogen flame chromatograph valve island type gas path constant temperature control device is characterized in that the device comprises: a plurality of gas path units arranged on a device main body; each gas path unit comprises a plurality of gas path outlets / inlets arranged on the surface of the device main body; an electromagnetic unit is used for adjusting the gas path direction of gas in each gas path pipeline; a constant temperature unit is arranged in the device main body and is used for adjusting the temperature of required gas for FID analysis in each gas path pipeline; the electromagnetic unit and the constant temperature unit are both connected to a control unit, and the control unit is used for executing the control of the electromagnetic unit and the constant temperature unit based on the current required parameters of FID analysis. The present application solves the problem that the existing hydrogen flame chromatograph cannot guarantee that the gas supply state meets the best working state of the chromatograph during the test process, thereby improving the detection result accuracy.

The invention relates to a flow expansion coefficient feedback control system and method applied to the field of control, the system firstly uses a physical state monitoring module to detect physical state parameters of fluid in real time, and an adaptive coefficient calculation formula is called out from an expansion coefficient model library, so that a relative flow expansion coefficient is calculated; according to the flow expansion coefficient, the opening degree of the valve is accurately controlled according to the flow expansion coefficient, the flow control precision is effectively improved, in the process, the flow expansion coefficient is visually displayed through the control parameter adjusting module, then the valve is controlled in a light measurement mode, and therefore accurate control over the flow can be achieved according to feedback of the flow expansion coefficient. Moreover, the visual display of the flow expansion coefficient also facilitates the self-fault diagnosis of the valve, and also facilitates the manual precise control of a worker when a fault occurs.