219results about How to "Precise flow control" patented technology

The invention relates to the technical field of flood storage digital analysis, in particular to a flood diversion gate regulation and control management method and system for digital flood storage analysis. The method comprises the following steps: constructing a flood storage area terrain model; acquiring historical flood storage hydrological data of the flood storage area; according to the flood storage area terrain model, carrying out flood storage mode space hydrological characteristic coupling analysis on the historical flood storage hydrological data, and generating flood storage mode space hydrological characteristic data; constructing a flood storage water power generalization model based on the flood storage area terrain model and the flood storage mode space hydrological characteristic data; performing flood characteristic simulation analysis in the flood storage polder based on the flood storage water power generalization model to generate flood characteristic simulation data in the flood storage polder; analyzing simulated land planning data of an internal region based on the internal flood characteristic simulation data of the flood storage polder; and designing an intelligent regulation and control decision of the flood-dividing sluice based on the simulated land planning data of the internal region and the flood characteristic simulation data of the flood storage internal region. According to the method, accurate flood characteristic analysis in the flood storage polder is realized.

The invention belongs to the field of wastewater treatment, and provides a tunnel construction wastewater treatment method, which uses a system, the system comprises a secondary sedimentation tank, a tertiary sedimentation tank, an integrated device, three on-line sensors for wastewater pH value monitoring and two on-line sensors for wastewater SS value monitoring, the system further comprises a pH first-stage adding device, a pH second-stage adding device, a coagulant adding device and a flocculant adding device, and the online sensor and the adding devices are electrically connected with the controller. According to the treatment method provided by the invention, the dosage of chemicals can be accurately metered according to the change of the concentration and the water quantity of the tunnel construction wastewater, the concentration of the chemical liquid is automatically configured, the flow of the chemical liquid is accurately controlled, and real-time adjustment can be realized according to the change of the water quality and the water quantity of the wastewater. According to the treatment method, a dead-corner-preventing wastewater treatment device is used, so that the problems of sludge deposition and hardening at the bottoms of tank bodies of the coagulation tank and the flocculation tank, especially at the four corners of the tank bodies can be effectively solved.

The invention relates to the technical field of water distributors, in particular to an anti-blocking water distributor for oil field exploitation. The problem that impurities in flowing liquid block a water distributor is solved. The invention relates to an anti-blocking water distributor for oil field exploitation, which comprises the following components: a housing which is provided with a plurality of liquid outlets; the upper joint is mounted on the shell in a threaded manner; the first sleeve is arranged in the shell in a sliding mode and provided with a plurality of liquid guide holes, and the liquid guide holes are formed in an inclined mode; the second sleeve is arranged in the shell in a sliding mode, and the two ends of the second sleeve make contact with the first sleeve and the upper connector respectively; the adjusting mechanism is arranged in the shell and used for adjusting the opening size of the liquid guide hole in the first sleeve through pressure. Liquid is guided to rotate through the liquid guide hole, the phenomenon that impurities in the liquid are attached to the position near the liquid outlet for a long time to cause blockage is reduced, and therefore it is ensured that the device continuously and effectively works.

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 invention discloses a real-time pressure maintaining device of a new energy automobile tire and a control method. The real-time pressure maintaining device comprises a hub motor arranged in a hub, a tire pressure sensor arranged on the inner side of the tire and an inflating valve arranged on the inner side of the tire. A rotating shaft is arranged in the hub and connected with the rotating end of the hub motor. An air pump machine is arranged on the side wall of the rotating shaft, the output end of the air pump machine is connected with an electromagnetic regulating valve, and the electromagnetic regulating valve is connected with an inflating valve of a tire through a pipeline; one end of the rotating shaft is provided with a conductive slip ring, the conductive slip ring comprises a rotor arranged in the rotating shaft, one end of the rotor is electrically connected with the air pump machine, the other end of the rotor is sleeved with a rotor bearing, the outer end of the rotor bearing is provided with a stator end cover, the other end of the stator end cover is provided with a stator, and the stator is provided with a stator interface connected with a vehicle body power supply and a signal end. Real-time pressure maintaining of the tire can be achieved, the service life of the tire is prolonged, and the reliability of the tire is improved.

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 invention belongs to the technical field of fine chemical synthesis, and discloses a continuous micro-channel chloroethylene carbonate synthesis method, which comprises: 1, introducing a gas-state reactant into a first pipe through a gas inlet, and introducing a liquid-state reactant into the first pipe through a liquid inlet; 2, the gaseous reactant pushes the liquid reactant to enter the reaction tube of the reactor from the first tube, and a reaction is carried out under the condition that the ultraviolet lamp tube emits ultraviolet light and irradiates the reaction tube, and a gas-liquid mixture containing a target product is obtained; and 3, enabling the gas-liquid mixture to flow through a gas-liquid confluence inlet and a gas-liquid confluence outlet of a confluence device, and finally introducing the gas-liquid mixture into a gas-liquid separator for gas-liquid separation to obtain a target product. The method is simple to operate, safe and efficient, an amplification effect does not exist, and the prepared chloroethylene carbonate product is stable in quality, relatively high in yield and easy for industrial large-scale continuous production.

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 aluminum alloy low-pressure pouring degassing device comprises a quantitative furnace, a gas guide pipe is arranged in the quantitative furnace and is longitudinally arranged, a fireproof layer is arranged on the peripheral face of the gas guide pipe, a gas guide hole is formed in the bottom of the gas guide pipe, and the gas guide hole is close to the inner bottom of the quantitative furnace; the upper part of the gas guide pipe penetrates out of the quantitative furnace and is communicated with one end of a heat-resistant gas pipe through a flange; the other end of the heat-resistant gas pipe is communicated with an argon bottle. According to the method, after the aluminum alloy melt enters the quantitative furnace, the argon bottle is opened, argon enters the gas guide pipe through the heat-resistant gas pipe, the connector and the connecting pipe in sequence, then is discharged through the gas guide hole and enters the aluminum alloy melt, the argon forms bubbles and rises after entering the melt, and hydrogen is gradually separated out of the melt and attached to the surfaces of the argon bubbles; along with the rising of argon bubbles, molten aluminum alloy is brought out, and the hydrogen content is reduced.

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 lithium battery manufacturing, and discloses an interface structure of a pipeline and a ton bag, which comprises a material bin suitable for accommodating materials; the upper end of the discharging pipeline is arranged below the material bin in a communicating manner; the annular protruding part extends outwards from the outer surface of the discharging pipeline, the upper end of the annular protruding part communicates with the lower end of the discharging pipeline, and a discharging opening is formed in the lower end of the annular protruding part; and the ton bag wraps the annular protruding part and extends to the position above the annular protruding part so as to be connected with the discharging pipeline, and the discharging port communicates with the interior of the ton bag. According to the utility model, the annular protruding part is arranged at the lower end of the blanking pipeline, and the ton bag wraps the annular protruding part and is connected with the blanking pipeline, so that the ton bag is not easy to slip off and break away from the blanking pipeline, the connection tightness of the blanking pipeline and the ton bag is enhanced, and the production efficiency is improved.

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 invention relates to the technical field of pump bodies, in particular to a smooth pulsation device of a reciprocating pump, which comprises pump bodies, a plurality of groups of material output ports are arranged on one side of each pump body, a pump main shaft is rotatably connected in each pump body, the smooth pulsation device comprises an automatic control module, and the automatic control module is used for comparing the phase difference of the two pump bodies. The rotating speed is adjusted to enable the output of one set of pump bodies to be always kept at a peak value corresponding to the output peak valley of the other set of pump bodies, vibration of a pipeline system is reduced, the states of the pump bodies are adjusted according to conveying requirements, low-pressure small-flow liquid conveying is facilitated, high-pressure large-flow liquid conveying can be achieved, the phase difference of the two pump bodies can be compared, and the working efficiency is improved. Signals are fed back to the synchronous control cabinet to adjust the rotating speed, vibration of a pipeline system is reduced, and pulsation tends to be stable.

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 utility model relates to the technical field of sticker cutting, in particular to sticker cutting equipment which comprises a supporting seat, a pressing mechanism, two cutting mechanisms, a detection mechanism and a conveying mechanism, guide channels are arranged at two ends of the supporting seat, and a first warping plate and a second warping plate are mounted on the supporting seat and located between the two guide channels. The first seesaw and the second seesaw are arranged on the supporting base and tilt in opposite directions, tilting mechanisms are installed on the supporting base and located below the first seesaw and the second seesaw, and cutting grooves matched with the cutting mechanisms are formed between the first seesaw and the second seesaw and in the second seesaw. The two ends of the first warping plate are each provided with a downward pressing groove matched with a downward pressing mechanism, by arranging the first warping plate and the second warping plate, cut stickers can be effectively guided to the guide channels on the two sides, and therefore more accurate flow control is achieved, the stickers can be effectively classified, the stickers can smoothly flow to the needed positions, and therefore the stickers can be conveniently and rapidly cut. Therefore, production efficiency is improved and waste is reduced.

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 utility model relates to a virus inactivation tank, which belongs to the technical field of biological medicine equipment and comprises an inactivation tank body, a temperature control component, a control unit and a power supply unit for supplying power to the whole inactivation tank, the inactivation tank body comprises an inner tank, an outer tank is arranged on the outer side of the inner tank, a partition plate is arranged between the inner tank and the outer tank, and a heat insulation layer is arranged between the outer tank and the partition plate. The temperature control assembly comprises a temperature control medium source, an upper medium coil pipe and a lower medium coil pipe, the lower medium coil pipe is coiled at the bottom of the outer wall of the inner tank, the upper medium coil pipe is coiled on the outer wall of the inner tank above the lower medium coil pipe, and the two ends of the upper medium coil pipe and the two ends of the lower medium coil pipe are connected to the medium source; the upper medium coil pipe and the lower medium coil pipe are arranged on the upper portion and the lower portion of the outer wall of the inner tank respectively, two temperature control loops are formed, and accurate control over the temperatures of different parts of the inner tank can be achieved. The layout ensures that the temperature distribution in the inner tank is more uniform, so that the inactivation efficiency of viruses and bacteria is improved.

The invention relates to the technical field of perovskite solar cell film preparation, in particular to a formamidino halide material cold deposition coating device and method.The formamidino halide material cold deposition coating device comprises a shell, an evaporation source and a substrate support, the evaporation source and a substrate are both located in the shell, a heating belt is embedded in the shell, the evaporation source is arranged in the center of the shell, and the substrate support is arranged on the substrate support; the heating belt and the evaporation source are subjected to temperature control in an independent electric heating mode; the substrate support is arranged around the evaporation source according to the design position of the cavity; a cooling structure is arranged in the substrate support, substrate clamps are arranged on the two faces of the substrate support, a substrate is fixed to the substrate clamps, and a rotating structure is arranged at the bottom of the substrate support. The interior of the shell further communicates with a vacuum pump. During use, the temperature of the shell is higher than that of the substrate support. According to the method, the formamidino halide material in a dispersed state is most easily deposited in a low-temperature region, and the preferential deposition and accurate control of the formamidino halide material can be realized by designing a variable-temperature and rotatable substrate device.

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 novel steam energy-saving system which comprises a heat exchange device, and a flash tank used for gas-liquid separation and an adjustable injection pump used for increasing steam pressure are connected between a heat exchange medium outlet and a heat exchange medium inlet of the heat exchange device through pipelines. A material inlet of the flash tank is connected to a heat exchange medium outlet of the heat exchange equipment through a pipeline, a condensate pump is arranged on a pipeline connected with a liquid outlet in the bottom of the flash tank, and a steam outlet in the top of the flash tank is connected to a low-pressure steam inlet of the adjustable injection pump through a pipeline. A high-pressure steam inlet of the adjustable injection pump is connected to the steam thermodynamic system through a pipeline, and a steam outlet of the adjustable injection pump is connected to a heat exchange medium inlet of the heat exchange equipment through a pipeline. The utility model improves the heat exchange efficiency, reduces the harm of steam condensed water, improves the energy conservation of a steam thermodynamic system, and is mainly used for heat exchange equipment using steam as a heat source and a jacket type heating process.

The utility model discloses a hydrogen subsystem of a fuel cell test system, which comprises a hydrogen supply assembly, a hydrogen circulation assembly and a gas discharge assembly, the hydrogen supply assembly comprises a hydrogen supply pipeline, and a first flowmeter, an ejector, a humidifier and a heater which are sequentially arranged on the hydrogen supply pipeline; the hydrogen supply pipeline is connected with an anode inlet of the fuel cell; the gas discharge assembly comprises a gas discharge pipeline, and the gas discharge pipeline is connected with an anode outlet of the fuel cell; the hydrogen circulation assembly comprises a hydrogen circulation pipeline and a gas-liquid separator installed on the hydrogen circulation pipeline, the two ends of the hydrogen circulation pipeline are connected with the ejector and the gas exhaust pipeline respectively, and the hydrogen circulation pipeline is externally connected with a heating and heat preservation device. The device has the beneficial effects that the hydrogen consumption of the test system is reduced, the nitrogen concentration in the hydrogen entering the reactor is reduced, and the test system is simplified.